CN209570914U - Photosensitive module, display module and electronic equipment - Google Patents

Abstract

The utility model discloses a kind of photosensitive mould group, display module and electronic equipment.The photosensitive mould group includes: photosensitive device, including a photosensitive panel, and for sensing optical signal, the photosensitive panel is equipped with the multiple third transmission regions passed through for optical signal and non-transparent region, and photosensitive unit is equipped in the non-transparent region；With anti-aliasing image-forming component, above the photosensitive panel, for preventing the optical signal received between the adjacent photosensitive unit from generating aliasing, the anti-aliasing image-forming component is equipped with multiple first transmission regions and multiple second transmission regions passed through for optical signal, second transmission region is correspondingly arranged with the third transmission region, and the optical signal across first transmission region is received by the photosensitive unit on photosensitive panel.The display module and electronic equipment include the photosensitive mould group.

Description

Photosensitive module, display module and electronic equipment

technical field

The utility model relates to a photosensitive module group, a display module group and electronic equipment for sensing biological characteristic information.

Background technique

At present, biometric information sensors, especially fingerprint recognition sensors, have gradually become standard components of electronic products such as mobile terminals. Since the optical fingerprint recognition sensor has a stronger penetration capability than the capacitive fingerprint recognition sensor, an optical fingerprint recognition module applied to a mobile terminal has been proposed. As shown in FIG. 1 , the optical fingerprint identification module includes an optical fingerprint sensor 400 and a light source 402 . Wherein, the optical fingerprint sensor 400 is disposed under the protective cover 401 of the mobile terminal. The light source 402 is disposed adjacent to one side of the optical fingerprint identification sensor 400 . When the user's finger F touches the protective cover 401, the light signal emitted by the light source 402 passes through the protective cover 401 and reaches the finger F. After being reflected by the valleys and ridges of the finger F, it is received by the optical fingerprint recognition sensor 400, and A fingerprint image of the finger F is formed.

However, the above-mentioned optical fingerprint identification module can only be limited to a predetermined area of the mobile terminal, for example, in the non-display area of the mobile terminal, and the fingerprint identification can only be performed by touching the predetermined area, so the use is still limited. Therefore, it is necessary to propose a structure that can be arranged in the display area and realize fingerprint recognition in any area in the display area.

Utility model content

The embodiments of the utility model aim at at least solving one of the technical problems existing in the prior art. Therefore, the embodiment of the utility model needs to provide a photosensitive module, a display module and an electronic device.

A photosensitive module according to an embodiment of the utility model includes:

The photosensitive device includes a photosensitive panel for sensing light signals, the photosensitive panel is provided with a plurality of third light-transmitting areas and non-light-transmitting areas for light signals to pass through, and the non-light-transmitting areas are provided with photosensitive unit; and

An anti-aliasing imaging element, located above the photosensitive panel, is used to prevent aliasing of light signals received between adjacent photosensitive units, and the anti-aliasing imaging element is provided with multiple channels for light signals to pass through a first light-transmitting area and a plurality of second light-transmitting areas, the second light-transmitting area is set corresponding to the third light-transmitting area, and the optical signal passing through the first light-transmitting area is detected by the light-sensitive panel on the photosensitive panel Photosensitive unit receives.

Due to differences in the reflection of light signals from different parts of the target object, the light signals sensed by adjacent photosensitive units in the photosensitive panel will be aliased, resulting in blurred biometric information. Anti-aliasing imaging elements are set on the panel, which improves the sensing accuracy of the photosensitive module.

In addition, the photosensitive module proposed by the utility model not only realizes the sensing of the biometric information of the target object in the display area, but also realizes the sensing of the biometric information of the target object at any position in the display area.

In some embodiments, the photosensitive unit is disposed opposite to the first light-transmitting region. In this way, it can be ensured that all light signals passing through the first light-transmitting region are received by the photosensitive unit, thereby improving the sensing accuracy of the photosensitive module.

In some embodiments, the first light-transmitting region allows light signals approximately perpendicular to the photosensitive panel to pass through.

In some embodiments, the optical signals approximately perpendicular to the photosensitive panel include optical signals perpendicular to the photosensitive panel, and optical signals offset within a predetermined angle range relative to the vertical direction of the photosensitive panel.

In some embodiments, the anti-aliasing imaging element further includes a light-absorbing wall, and the light-absorbing wall encloses the first light-transmitting region and the second light-transmitting region.

In some embodiments, the light-absorbing wall includes a plurality of alternately stacked light-absorbing blocks and raising blocks. The light-absorbing wall is formed by stacking the riser block and the light-absorbing block, which speeds up the manufacturing process of the anti-aliasing imaging element and ensures the anti-aliasing effect of the anti-aliasing imaging element.

In some embodiments, the raised block is made of transparent material.

In some embodiments, the first light-transmitting region and the second light-transmitting region are filled with a transparent material. Filling the first light-transmitting region and the second light-transmitting region with a transparent material not only increases the strength of the anti-aliasing imaging element, but also prevents impurities from entering the first light-transmitting region and affecting the light-transmitting effect.

In some embodiments, the anti-aliasing imaging element includes multiple layers of light-absorbing layers and transparent support layers alternately stacked; the light-absorbing layer includes a plurality of light-absorbing blocks arranged at intervals, and the intervals include a first interval and a second interval. Two intervals; the transparent supporting layer is filled with transparent material, and fills the first interval and the second interval together; wherein, the area corresponding to the first interval is the first light-transmitting area, and the second interval The area corresponding to the two intervals is the second transparent area.

By alternately stacking the light-absorbing layer and the transparent support layer, the preparation of the anti-aliasing imaging element is simplified, and the anti-aliasing effect of the anti-aliasing imaging element is guaranteed.

In some embodiments, the thickness of each transparent supporting layer is not equal.

In some embodiments, the thickness of the transparent support layer increases layer by layer.

By setting the thickness of the transparent support layer, it is prevented that the optical signal that deviates outside the preset angle range relative to the vertical direction of the transparent substrate passes through the anti-aliasing imaging element, thereby improving the anti-aliasing effect of the anti-aliasing imaging element.

In some embodiments, the anti-aliasing imaging element is directly formed on the photosensitive panel, or the anti-aliasing imaging element is independently fabricated and then disposed on the photosensitive panel.

In some embodiments, each of the photosensitive units corresponds to one or more of the first light-transmitting regions. The photosensitive unit corresponds to a plurality of first light-transmitting regions, which effectively improves the anti-aliasing effect of the anti-aliasing imaging element.

In some embodiments, the photosensitive module further includes a filter film, and the filter film is arranged between the anti-aliasing imaging element and the photosensitive panel, or the anti-aliasing imaging element is arranged Between the filter film and the photosensitive panel, wherein the filter film is used to filter light signals other than preset wavelength bands.

In some embodiments, the preset wavelength band is a wavelength band corresponding to blue or green light signals.

In the implementation mode of the utility model, by setting a filter film, the interference of ambient light is eliminated, and the image sensing accuracy of the photosensitive panel is improved.

In some embodiments, the photosensitive unit includes at least one photosensitive device, and the photosensitive device is selected from a photosensitive device with high photosensitive sensitivity to blue light signals or green light signals. Through the selection of the photosensitive device, the photosensitive device is more sensitive to the blue light signal and the green light signal, so the interference caused by the red light signal in the ambient light is avoided to a certain extent, thereby improving the sensing accuracy of the photosensitive module .

In some embodiments, the photosensitive panel further includes a transparent substrate, and the plurality of photosensitive units are distributed in an array on the transparent substrate.

In some embodiments, the transparent substrate is also provided with a scanning line group and a data line group electrically connected to the photosensitive unit, and the photosensitive device further includes a driving circuit connected to the scanning line group and a data line group. A signal processing circuit connected in groups, the driving circuit is used to provide scanning driving signals to the photosensitive unit through the scanning line group, so as to drive the photosensitive unit to perform light sensing; the signal processing circuit is used to sense the photosensitive unit The received signal is read out, and the predetermined biometric information of the target object touching or approaching the photosensitive panel is acquired according to the read out signal.

In some embodiments, the driving circuit is arranged on the photosensitive panel, or connected to the photosensitive panel through a connecting piece, and the signal processing circuit is connected to the photosensitive panel through a connecting piece.

In some embodiments, the photosensitive module is used for sensing fingerprint information.

In some embodiments, the photosensitive device is further configured to convert the sensed light signal into an electrical signal, and obtain predetermined biometric information of a target object touching or approaching the photosensitive panel according to the converted electrical signal.

The embodiment of the utility model provides a display module, including:

a display device, including a display panel, for performing image display; and

The photosensitive module is arranged above the display panel, and is used to sense light signals to obtain predetermined biometric information of a target object that touches or approaches the display module; the photosensitive module is any one of the above-mentioned embodiments. Photosensitive module.

In the embodiment of the present utility model, since the display module includes the photosensitive module in any one of the above embodiments, the display module has all the technical effects of the photosensitive module. In addition, the photosensitive module uses the light signal sent by the display device to sense the biometric information of the target object, thereby saving light sources and reducing the cost of the display module.

In some embodiments, the display panel, the photosensitive panel, and the anti-aliasing imaging element are stacked.

In some embodiments, the display panel has a display area; the photosensitive panel is used to perform biometric information sensing of a target object at any position within the display area of the display panel; or, the photosensitive panel has a sensor area, and the shape of the sensing area is consistent with the shape of the display area, and the size of the sensing area is smaller than or equal to the size of the display area. In this way, the photosensitive module realizes the sensing of the biometric information of the target object at any position in the display area.

In some implementations, the display panel includes a plurality of display pixels, and the display device further includes a display driving circuit for driving the plurality of display pixels to emit light, so as to be used as a sensor when the photosensitive module performs light sensing. light source.

In some implementations, the display device is further configured to perform touch sensing. When the display device detects a touch or approach of a target object, the display driving circuit drives display pixels corresponding to the touched area to emit light.

An embodiment of the present utility model provides an electronic device, which includes the photosensitive module of any one of the above embodiments, or includes the display module of any one of the above embodiments. Since the electronic device has the photosensitive module or the display module with any of the above-mentioned structures, it has all the above-mentioned beneficial effects of the photosensitive module and the display module.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention.

Description of drawings

The above and/or additional aspects and advantages of the embodiments of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 is a schematic diagram of an optical sensing structure applied to electronic equipment in the prior art;

2 is a schematic diagram of a partial structure of a photosensitive panel according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of light signals that can pass through the anti-aliasing imaging element in the photosensitive module shown in Fig. 2;

4 is a schematic diagram of a partial structure of an anti-aliasing imaging element according to an embodiment of the present invention;

5 is a schematic diagram of a local structure of an anti-aliasing imaging element according to another embodiment of the present invention;

Fig. 6 is a formation process of an anti-aliasing imaging element according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of a partial structure of an anti-aliasing imaging element according to another embodiment of the present invention;

8 is a schematic diagram of a partial structure of a photosensitive module according to another embodiment of the present invention;

9 is a structural block diagram of a photosensitive device according to an embodiment of the present invention;

Fig. 10 is a schematic structural view of an embodiment of the photosensitive unit shown in Fig. 9;

Fig. 11 is a schematic structural view of another embodiment of the photosensitive unit shown in Fig. 9;

Fig. 12 is a schematic diagram of a partial structure of a display module according to an embodiment of the present invention;

13 is a schematic diagram of the corresponding relationship between the display area of the display panel and the sensing area of the photosensitive panel according to an embodiment of the present invention;

Fig. 14 is a schematic diagram of a partial structure of a display module according to another embodiment of the present invention;

Fig. 15 is a schematic diagram of the front structure of a display module applied to an electronic device according to an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional structure diagram of the electronic device in FIG. 15 along line I-I, in which only part of the structure of the electronic device is shown.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the number of indicated technical features . Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined. "Contact" or "touching" includes direct contact or indirect contact. For example, the photosensitive module and the display module disclosed below are disposed inside the electronic device, such as under the protective cover, and the user's fingers indirectly touch the photosensitive module and the display module through the protective cover.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection, electrical connection or mutual communication; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the mutual communication of two components role relationship. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The disclosure below provides many different implementations or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. Furthermore, the present invention may repeat reference numerals and/or reference letters in different instances, such repetition is for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Furthermore, the described features and structures may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art should appreciate that the technical solutions of the present invention can also be practiced without one or more of the specific details, or with other structures, components, and the like. In other instances, well-known structures or operations are not shown or described in detail to avoid obscuring the invention.

In some embodiments, please refer to FIG. 2 , which shows a partial structure of a photosensitive module according to an embodiment of the present invention. The photosensitive module 2 includes a photosensitive device 20 (see FIG. 9 ) and an anti-aliasing imaging element 28 . Wherein, the photosensitive device 20 further includes a photosensitive panel 200, the photosensitive panel 200 includes a plurality of third light-transmitting areas P1 and a non-light-transmitting area P2 through which the light signal passes, and a light-sensing unit 22 is arranged in the non-light-transmitting area P2 . The photosensitive unit 22 is used for sensing light signals and converting the sensed light signals into corresponding electrical signals. The photosensitive device 20 is further configured to convert the sensed light signal into an electrical signal, and obtain predetermined biometric information of a target object touching or approaching the photosensitive panel 200 according to the converted electrical signal. The anti-aliasing imaging element 28 is disposed above the photosensitive panel 200 for preventing aliasing of light signals received between adjacent photosensitive units 22 . Further, the anti-aliasing imaging element 28 includes a plurality of first light-transmitting regions 282 and second light-transmitting regions 285 through which light signals pass, and the second light-transmitting regions 285 are set corresponding to the third light-transmitting regions P1. The photosensitive unit 22 is disposed corresponding to the first light-transmitting region 282 for receiving light signals passing through the first light-transmitting region 282 .

The biometric information of the target object includes, but is not limited to, skin texture information such as fingerprints, palm prints, ear prints, and soles, and other biometric information such as heart rate, blood oxygen concentration, and veins. The target object is, for example, but not limited to a human body, and may also be other suitable types of objects.

In the photosensitive module 2 of the embodiment of the present invention, an anti-aliasing imaging element 28 is provided on the photosensitive panel 200, so that the photosensitive unit 22 can obtain accurate biometric information after performing light sensing, thereby improving the sensing performance of the photosensitive device 20. precision.

In some embodiments, the photosensitive unit 22 is arranged opposite to the first light-transmitting region 282, which can ensure that all light signals passing through the first light-transmitting region 282 are received by the photosensitive unit 22, thereby improving the sensing performance of the photosensitive device 20. precision.

In some embodiments, the anti-aliasing imaging element 28 has light-absorbing properties, and among the light signals irradiated on the anti-aliasing imaging element 28, only the light signals approximately perpendicular to the photosensitive panel 200 can be transmitted from the anti-aliasing imaging element The first light-transmitting region 282 and the second light-transmitting region 285 of 28 pass through, and the remaining optical signals are absorbed by the anti-aliasing imaging element 28, and the photosensitive unit 22 is set corresponding to the first light-transmitting region 282, so only The light signal passing through the light-transmitting area 282 is received by the light-sensing unit 22 . In this way, aliasing of optical signals received between adjacent photosensitive units 22 can be prevented. It should be noted that the optical signals approximately perpendicular to the photosensitive panel 200 include optical signals perpendicular to the photosensitive panel 200 and optical signals offset within a preset angle range relative to the vertical direction of the photosensitive panel 200 . The preset angle range is within ±20°.

In certain embodiments, referring to FIGS. 2 and 3 in conjunction, FIG. 3 illustrates the range of light signals passing through the anti-aliasing imaging element 28 . Due to the light absorption characteristic of the anti-aliasing imaging element 28, only the light signal between the light signal L1 and the light signal L2 can reach the photosensitive unit 22 through the first light-transmitting region 282, and the rest of the light signals are all absorbed by the anti-aliasing imaging element 28. Wall 281 absorbs. Optionally, the first light-transmitting region 282 takes a circular hole as an example. It can be seen from FIG. 3 that the smaller the aperture of the first light-transmitting region 282 is, the smaller the range of the angle α of the optical signal passing through the first light-transmitting region 282 is. , so the anti-aliasing effect of the anti-aliasing imaging element 28 is better. In this way, the anti-aliasing effect of the anti-aliasing imaging element 28 can be improved through the first light-transmitting region 282 with a smaller aperture provided by the anti-aliasing imaging element 28 . In addition, since the aperture of the first light-transmitting region 282 of the anti-aliasing imaging element 28 is relatively small, each light-sensing unit 22 will correspond to a plurality of first light-transmitting regions 282, so that the light-sensing unit 22 can sense enough light signal, improving the sensing accuracy of the photosensitive module 2 .

In some embodiments, please continue to refer to FIG. 2 , the anti-aliasing imaging device 28 includes a light-absorbing wall 281 , and the plurality of first light-transmitting regions 282 and second light-transmitting regions 285 are surrounded by the light-absorbing wall 282 . The light absorbing wall 281 is formed of light absorbing material. The light-absorbing material includes metal oxide, carbon black paint, black ink and the like. Among them, the metal in the metal oxide is, for example but not limited to, one of chromium (Cr), nickel (Ni), iron (Fe), tantalum (Ta), tungsten (W), titanium (Ti), molybdenum (Mo) or Several kinds. The axial extension direction of the first light-transmitting region 282 and the second light-transmitting region 285 is a direction perpendicular to the photosensitive panel 200, so that the optical signal irradiated to the anti-aliasing imaging element 28 is approximately perpendicular to the photosensitive panel 200. The light signal on the light can pass through the first light-transmitting region 282 and the second light-transmitting region 285 , and the remaining light signals are absorbed by the light-absorbing wall 281 .

Further, please refer to FIG. 4 , which shows the structure of an anti-aliasing imaging element 28 according to an embodiment of the present invention. The light-absorbing wall 281 has a multi-layer structure, and the light-absorbing wall includes alternately stacked light-absorbing blocks 281 a and raising blocks 281 b. In one embodiment, the light-absorbing block 281a is formed of a light-absorbing material. The light-absorbing material is for example but not limited to metal oxide, carbon black paint, black ink and the like. Among them, the metal in the metal oxide is, for example but not limited to, one of chromium (Cr), nickel (Ni), iron (Fe), tantalum (Ta), tungsten (W), titanium (Ti), molybdenum (Mo) or Several kinds. The stand-up block 281b is, for example but not limited to, a transparent layer formed of a transparent material, such as a translucent material, a light-absorbing material, and the like.

In some embodiments, a plurality of light-absorbing blocks 281a on the same layer are arranged at intervals, and the area corresponding to the first interval 281c between the light-absorbing blocks 281a in the same layer is the first light-transmitting area 282, and the light-absorbing blocks 281a The area corresponding to the second space 281 d therebetween is the second transparent area 285 . Further, multiple light-absorbing blocks 281a and multiple raising blocks 281b of the same layer can be manufactured at one time. Specifically, by providing a mask, the mask is an integrally formed diaphragm, and the diaphragm forms an opening corresponding to the position of the light absorbing block 281a, and the shape and size of the opening are consistent with the shape and size of the light absorbing block 283 , and the spacing of the holes includes a first spacing 281c and a second spacing 281d. Similarly, a plurality of spacers 281b on the same layer can also be formed by the mask evaporation method. In this way, light-absorbing blocks 281 a and stand-up blocks 281 b are alternately stacked by vapor deposition on a carrier in sequence through the mask, so as to form the anti-aliasing imaging element 28 .

The embodiment of the present invention not only speeds up the manufacturing process of the anti-aliasing imaging element 28 through the setting of the raising block 281b, but also ensures the anti-aliasing effect of the anti-aliasing imaging element 28 through setting the height of the raising block 281b. For example, setting the heights of the pads 281b of different layers can prevent light signals that are offset by ±20° relative to the vertical direction of the photosensitive panel 200 from passing through the pads 281b, thereby improving the sensing accuracy of the photosensitive module 2 .

In some embodiments, both the above-mentioned first light-transmitting region 282 and the second light-transmitting region 285 can be filled with transparent materials to increase the strength of the anti-aliasing imaging element 28 and prevent impurities from entering the first light-transmitting region 282 In the second light-transmitting region 285, the light-transmitting effect is affected. In order to ensure the light transmission effect of the first light transmission area 282 and the second light transmission area 285, the transparent material can be selected from a material with high light transmission rate, such as glass, PMMA (acrylic), PC (polycarbonate) and so on.

In some embodiments, please refer to FIG. 5 , which shows the structure of an anti-aliasing imaging device according to another embodiment of the present invention. The anti-aliasing imaging element 28 has a multilayer structure, and the anti-aliasing imaging element 28 includes alternately stacked light-absorbing layers 283 and transparent support layers 284; the light-absorbing layer 283 includes a plurality of light-absorbing blocks 283a arranged at intervals. Moreover, a first interval 283b and a second interval 283c are formed between the plurality of light-absorbing blocks 283a. The transparent supporting layer 284 is filled with a transparent material, and also fills the first space 283b and the second space 283c between the light absorbing blocks 283a. Wherein, the area corresponding to the first interval 283 b is the first light-transmitting area 282 , and the area corresponding to the second interval 283 c is the second light-transmitting area 285 .

Further, please refer to FIG. 6 , which shows a preparation process of an anti-aliasing imaging element according to an embodiment of the present invention. Specifically, when preparing the anti-aliasing imaging element 28, a layer of light-absorbing material is first coated on a carrier, and the corresponding parts of the first light-transmitting region 282 and the second light-transmitting region 285 are engraved on the light-absorbing material layer. After being etched away, the unetched part forms a plurality of light-absorbing blocks 283a. The etching techniques are such as but not limited to photolithography, X-ray etching, electron beam etching and ion beam etching. And the etching type may include dry etching and wet etching. Then, a layer of transparent material is coated on the etched light-absorbing block 283, and the transparent material not only covers the multiple light-absorbing blocks 283a, but also fills the first space 283b and the second space 283c between the multiple light-absorbing blocks 283a. , thereby forming a transparent support layer 284 . Then, a plurality of light-absorbing blocks 283a are formed on the transparent support layer 284 according to the formation method of the light-absorbing layer 283 , and in turn, multiple layers of light-absorbing layers 283 and transparent support layers 284 are alternately stacked, thereby forming the anti-aliasing imaging element 28 .

Further, in order to ensure the light-transmitting effect of the first light-transmitting region 282 and the second light-transmitting region 285, the transparent material forming the transparent support layer 284 can be selected from a material with higher light transmittance, such as glass, PMMA (acrylic), PC (polycarbonate), epoxy resin, etc.

In some embodiments, please refer to FIG. 7 , which shows the structure of an anti-aliasing imaging device according to another embodiment of the present invention. The anti-aliasing imaging element 28 includes light-absorbing layers 283 and transparent support layers 284 alternately stacked, and the thicknesses of the transparent support layers 284 of different layers are not equal. That is, the values of the thicknesses h1, h2 and h3 in FIG. 7 are not equal. Optionally, the thickness of the transparent support layer 284 increases layer by layer, ie h1<h2<h3. In this way, it is possible to prevent light signals that deviate by more than ±20° relative to the vertical direction of the photosensitive panel from passing through the transparent support layer 284 between the light absorbing blocks 283a, thereby improving the sensing accuracy of the photosensitive module 2 . It should be noted that the thickness parameters of each transparent support layer 284 and the width and height parameters of the light absorbing block 283a can be set differently and combined in multiple ways to improve the sensing accuracy of the photosensitive module 2 .

In some embodiments, the anti-aliasing imaging element 28 is directly formed on the photosensitive panel 200 , that is, the carrier when the anti-aliasing imaging element 28 is formed is the photosensitive panel 200 provided with the photosensitive unit 22 . However, alternatively, for example, the anti-aliasing imaging element 28 is manufactured independently and then disposed on the photosensitive panel 200 provided with the photosensitive unit 22 , thereby speeding up the manufacturing process of the photosensitive module 2 .

In some embodiments, taking the target object as a biological body such as a finger as an example, when the finger touches or approaches the photosensitive module 2, if there is ambient light shining on the finger, the finger has many tissue structures, such as epidermis, bone, Therefore, part of the light signal in the ambient light will penetrate the finger, and part of the light signal will be absorbed by the finger. The light signal that penetrates the finger will reach the photosensitive unit 22. At this time, the photosensitive unit 22 not only senses the light signal reflected by the target object, but also senses the light signal of the ambient light penetrating the finger, so it cannot be accurately sensed. . Therefore, in order to prevent ambient light from affecting the sensing of the target object by the photosensitive unit 22 , please refer to FIG. 8 , which shows the structure of a photosensitive module according to another embodiment of the present invention. The photosensitive module 2 further includes a filter film 29 disposed between the anti-aliasing imaging element 28 and the photosensitive panel 200 and corresponding to the photosensitive unit 22 . The filter film is used to filter the optical signals outside the preset wavelength band. However, alternatively, the anti-aliasing imaging element 28 is arranged between the filter film 29 and the photosensitive panel 200, for example, the filter film 29 is arranged on the side of the anti-aliasing imaging element 28 away from the photosensitive panel 200 .

In the embodiment of the present invention, the light signal outside the preset wavelength band is filtered out of the reflected light signal through the filter film 29 , thereby improving the sensing accuracy of the photosensitive module 2 .

In some embodiments, the predetermined wavelength band is a wavelength band corresponding to the blue light signal, that is, the filter film 29 filters out light signals other than the blue light signal.

In some embodiments, the preset wavelength band is a wavelength band corresponding to the green light signal, that is, the filter film 29 filters out light signals other than the green light signal.

Among the red light signal, blue light signal and green light signal of ambient light, the target object F such as a finger has the weakest absorption of the red light signal, followed by the green light signal, and the strongest absorption of the blue light signal. That is, when the ambient light is irradiated on the finger, a large amount of blue light signal is absorbed by the finger, and only a small amount or even no blue light signal penetrates the finger. Therefore, selecting optical signals in wavelength bands other than the blue light signal or the green light signal for filtering can greatly eliminate the interference of ambient light and improve the sensing accuracy of the photosensitive module 2 .

Please continue to refer to FIG. 2 , the photosensitive panel 200 includes a transparent substrate 26 and a plurality of photosensitive units 22 formed on the transparent substrate 26 . The transparent substrate 26 is for example but not limited to a glass substrate, a plastic substrate, crystal, sapphire, etc. In addition, the transparent substrate 26 can be made of a rigid material or a flexible material, such as a flexible film. If the transparent substrate 26 is made of a flexible material, the photosensitive module 2 is not only thinner, but also applicable to electronic devices with curved display screens.

In some embodiments, please refer to FIG. 9 , which shows the structure of a photosensitive device according to an embodiment of the present invention. The photosensitive device 20 includes a photosensitive panel 200, a plurality of photosensitive units 22 are distributed in an array on a transparent substrate 26, and on the transparent substrate 26, for example, a scanning line group and a data line group electrically connected to the photosensitive units 22 are formed. The group is used to transmit the scan driving signal to the photosensitive unit 22 to activate the photosensitive unit 22 to perform light sensing, and the data line group is used to output the electrical signal generated by the photosensitive unit to perform light sensing. The transparent substrate 26 is for example but not limited to a silicon substrate, a metal substrate, a printed circuit board and the like.

Specifically, the photosensitive units 22 are distributed in an array, such as a matrix. Of course, other regular or irregular distributions are also possible. The scan line group includes a plurality of scan lines 201 , the data line group includes a plurality of data lines 202 , and the plurality of scan lines 201 and the plurality of data lines 202 are intersected and arranged between adjacent photosensitive units 22 . For example, a plurality of scan lines G1 , G2 . . . Gm are arranged at intervals along the Y direction, and a plurality of data lines S1 , S2 . . . Sn are arranged at intervals along the X direction. However, alternatively, the plurality of scanning lines 201 and the plurality of data lines 202 are not limited to the vertical arrangement shown in FIG. 9 , and may also be arranged at a certain angle, such as 30°, 60°, and so on. In addition, due to the conductivity of the scan line 201 and the data line 202, the scan line 201 and the data line 202 at the crossing position are isolated by an insulating material.

It should be noted that the arrangement of the distribution and quantity of the scanning lines 201 and the data lines 202 is not limited to the above exemplary embodiments, and corresponding scanning line groups and data lines can be set according to the structure of the photosensitive unit 22 Group.

Furthermore, a plurality of scanning lines 201 are connected to a photosensitive driving circuit 23 , and a plurality of data lines 202 are connected to a signal processing circuit 25 . The photosensitive driving circuit 23 is used to provide a corresponding scanning driving signal, and transmit it to a corresponding photosensitive unit 22 through a corresponding scanning line 201 , so as to activate the photosensitive unit 22 to perform light sensing. The photosensitive driving circuit 23 is formed on the transparent substrate 26 , and of course, can also be electrically connected to the photosensitive unit 22 through a connector (eg, a flexible circuit board), that is, connected to a plurality of scanning lines 201 . The signal processing circuit 25 receives the electrical signal generated by the photosensitive unit 22 through the data line 202 and obtains the biometric information of the target object according to the electrical signal.

In some embodiments, the photosensitive device 20 including the photosensitive panel 200 includes a controller 27 in addition to the above-mentioned signal processing circuit 25 and photosensitive driving circuit 23, and the controller 27 is used to control the driving circuit to output a corresponding The scanning driving signal, for example but not limited to, activates the photosensitive unit 22 to perform light sensing row by row. The controller 27 is also used to control the signal processing circuit 25 to receive the electrical signals output by the photosensitive units 22, and after receiving the electrical signals output by all the photosensitive units 22 performing light sensing, generate the biometric information of the target object according to the electrical signals .

Further, the above-mentioned signal processing circuit 25 and the controller 27 are electrically connected to the photosensitive unit 22 through, for example, a connecting piece (eg, a flexible circuit board).

In some embodiments, please refer to FIG. 10 , which shows the connection structure of the photosensitive unit 22 , the scan line 201 and the data line 202 in one embodiment. The photosensitive unit 22 includes at least one photosensitive device 220 and a switch device 222 . The switch device 222 has a control terminal C and two signal terminals, such as a first signal terminal Sn1 and a second signal terminal Sn2 . Wherein, the control terminal C of the switch device 222 is connected to the scan line 201 , the first signal terminal Sn1 of the switch device 222 is connected to a reference signal L through the photosensitive device 220 , and the second signal terminal Sn2 of the switch device 222 is connected to the data line 202 . It should be noted that the photosensitive unit 22 shown in FIG. 10 is only for illustration, and is not limited to other compositional structures of the photosensitive unit 22 .

Specifically, the aforementioned photosensitive device 220 is, for example but not limited to, any one or several of a photodiode, a phototransistor, a photodiode, a photoresistor, and a thin film transistor. Taking the photodiode as an example, by applying a negative voltage at both ends of the photodiode, at this time, if the photodiode receives an optical signal, it will generate a photocurrent proportional to the optical signal, and the stronger the intensity of the received optical signal The larger the photoelectric current is, the faster the voltage on the negative electrode of the photodiode will drop. Therefore, by collecting the voltage signal on the negative electrode of the photodiode, the intensity of the light signal reflected by different parts of the target object can be obtained, and then the target can be obtained. The biometric information of the object. It can be understood that if the light-sensing effect of the photo-sensing device 220 is to be increased, multiple photo-sensing devices 220 are provided.

Further, the switching device 222 is, for example, but not limited to any one or several of triodes, MOS transistors, and thin film transistors. Certainly, the switch device 222 may also include other types of devices, and the number may also be 2, 3, and so on.

In some implementations, in order to further improve the sensing accuracy of the photosensitive module 2 , a photosensitive device 220 with high photosensitivity to blue or green light signals may also be selected. By selecting a photosensitive device 220 with high photosensitive sensitivity to blue light signals or green light signals to perform light sensing, the photosensitive device 220 is more sensitive to photosensitivity to blue light signals or green light signals, thus avoiding ambient light to a certain extent. The interference caused by the mid-red light signal improves the sensing accuracy of the photosensitive module 2 .

Taking the photosensitive unit 22 structure shown in FIG. 10 as an example, the gate of the thin film transistor TFT serves as the control terminal C of the switching device 222, and the source and drain of the thin film transistor TFT correspond to the first signal terminal Sn1 and the first signal terminal Sn1 of the switching device 222. The second signal terminal Sn2. The gate of the thin film transistor TFT is connected to the scan line 201 , the source of the thin film transistor TFT is connected to the cathode of the photodiode D1 , and the drain of the thin film transistor TFT is connected to the data line 202 . The anode of the photodiode D1 is connected to a reference signal L, such as a ground signal or a negative voltage signal.

When the photosensitive unit 22 performs light sensing, a driving signal is applied to the gate of the thin film transistor TFT through the scan line 201 to drive the thin film transistor TFT to be turned on. At this time, the data line 202 is connected to a positive voltage signal. When the thin film transistor TFT is turned on, the positive voltage signal on the data line 202 is applied to the negative electrode of the photodiode D1 through the thin film transistor TFT. Since the positive electrode of the photodiode D1 is grounded, the photoelectric A reverse voltage is applied to both ends of the diode D1, so that the photodiode D1 is in reverse bias, that is, in an operating state. At this time, when a light signal irradiates the photodiode D1 , the reverse current of the photodiode D1 increases rapidly, thereby causing a change in the current on the photodiode D1 , and the changed current can be obtained from the data line 202 . Since the greater the intensity of the optical signal, the greater the reverse current will be. Therefore, according to the current signal obtained on the data line 202, the intensity of the optical signal can be obtained, and then the image information of the target object can be obtained.

In some implementation manners, the above-mentioned reference signal L may be a positive voltage signal, a negative voltage signal, a ground signal, or the like. As long as the electrical signal provided on the data line 202 and the reference signal L are applied to both ends of the photodiode D1 so that a reverse voltage is formed at both ends of the photodiode D1 to perform light sensing, it is within the protection scope of the present invention.

It can be understood that, the connection manner of the thin film transistor TFT and the photodiode D1 in the photosensitive unit 22 is not limited to the connection manner shown in FIG. 10 , and other connection manners are also possible. For example, as shown in FIG. 11 , it shows the connection structure of the photosensitive unit 22 , the scanning line 201 and the data line 202 in another embodiment of the present invention. The gate G of the thin film transistor TFT is connected to the scan line 201 , the drain D of the thin film transistor TFT is connected to the anode of the photodiode D1 , and the source S of the thin film transistor TFT is connected to the data line 202 . The cathode of the photodiode D1 is connected to a positive voltage signal.

In some implementations, the switching device 222 may be disposed below the photosensitive device 220 , or the switching device 222 and the photosensitive device 220 may be partially overlapped. The scan lines 201 and the data lines 202 can also be disposed under the switch device 222 . In this way, the arrangement of the photosensitive unit 22 , the scanning line 201 and the data line 202 can be more compact, and the photosensitive area of the photosensitive device 220 can be increased in the case of a limited arrangement area, thereby enhancing the sensing effect of the photosensitive panel 200 .

Specifically, in some embodiments, the semiconductor layer and the upper electrode of the photosensitive device 220 may also extend above the switching device 222 to increase the sensing area. Taking the photosensitive device 220 as a photodiode as an example, the anode and semiconductor layer of the photodiode extend above the switching device 222 to cover the switching device 222, and a light-shielding layer is further provided above the area where the anode corresponds to the switching device 222 to prevent light from shining on the switching device 222 . The cathode of the photodiode is connected to the switching device 222 . The cathode is a lower electrode, for example, made of a non-transparent conductive material, such as a metal material.

Please refer to FIG. 12 , which shows a partial structure of the display module 1 according to an embodiment of the present invention. The display module 1 includes a display device (not shown in the figure) and a photosensitive module 2 . The display device further includes a display panel 100 for performing image display. The photosensitive module 2 is the photosensitive module 2 of any of the above-mentioned embodiments, and the photosensitive module 2 is arranged above the display panel 100 for sensing light signals to obtain the information of the target object that touches or approaches the display module 1. Order biometric information.

Specifically, the display panel 100 includes a plurality of display pixels 12 , and there is an interval H between adjacent display pixels 12 . The photosensitive module 2 includes a photosensitive panel 200 . Since the photosensitive panel 200 in the photosensitive module 2 is located above the display panel 100, in order not to affect the display of the display panel 100, the photosensitive panel 200 in the photosensitive module 2 is provided with a third light-transmitting region P1. P1 is set corresponding to the display pixel 12 for the light signal emitted by the display panel 100 to pass through. In some embodiments, in order to improve the display effect of the display panel, the area of the third light-transmitting region P1 is slightly larger than the area of the display pixel 12 .

In addition, due to the opaque characteristics of the scanning lines 201, data lines 202, and photosensitive devices 220 on the substrate 26, and in order to prevent the performance of the switching devices 222 from being irradiated by optical signals to the switching devices 222, the scanning lines 201 are formed on the substrate 26. , the data line 202 , the photosensitive device 220 , and the switching device 222 become the non-light-transmitting region of the photosensitive panel 200 . The non-transparent region is located above the interval H of the display panel 100 . Correspondingly, the switching device 222 and the photosensitive device 220 are located in the non-transmissive area. It can be understood that, if the components provided on the photosensitive panel 200 can achieve light transmission or omit some light-impermeable components, the non-light-transmitting area can also become the third light-transmitting area P1. For example, in some implementations, the scan lines 201 and the data lines 202 may also be made of transparent conductive materials and located in the third light-transmitting region P1. Therefore, in the embodiment of the present utility model, the positions and sizes of the third light-transmitting region P1 and the non-light-transmitting region are not strictly limited, and can be flexibly adjusted according to actual conditions.

In some embodiments, referring to FIG. 12 , the anti-aliasing imaging element 28 in the photosensitive module 2 is stacked with the photosensitive panel 200 and the display panel 100, that is, the photosensitive panel 200 is located between the anti-aliasing imaging element 28 and the display panel. Between 100.

In some embodiments, the side where the photosensitive panel 200 and the display panel 100 are attached to each other share the same substrate, for example, the side where the display panel 100 and the photosensitive panel 100 are attached is a protective substrate, then the photosensitive panel 200 The unit 22 is directly disposed on the protective substrate. The photosensitive panel 200 and the display panel 100 share the same substrate, that is, the substrate 26 is saved, thereby reducing the thickness of the display module.

When the display module 1 is working, the display panel 100 sends out light signals to achieve corresponding display effects. At this time, if a target object touches or touches the display module 1, the light signal sent by the display panel 100 will be reflected after reaching the target object, and the reflected light signal will be received by the photosensitive panel 200, and the photosensitive panel 200 will receive the light signal Convert to an electrical signal corresponding to the optical signal. The signal processing circuit 25 (please refer to FIG. 9 ) in the photosensitive module 2 obtains predetermined biometric information of the target object according to the electrical signal generated by the photosensitive panel 200 .

In some implementations, the photosensitive panel 200 is used to perform biometric information sensing on a target object anywhere within the display area of the display panel 100 . Specifically, for example, please refer to FIG. 12 and FIG. 13 in combination, the display panel 100 has a display area 101 and a non-display area 102, the display area 101 is defined by the light-emitting areas of all display pixels 12 of the display panel 100, and the areas outside the display area 101 The area is a non-display area 102, which is used to set up circuits such as a display driving circuit for driving the display pixels 12 or to set up a wiring bonding area for connecting a flexible circuit board. The photosensitive panel 200 has a sensing area 203 and a non-sensing area 204, the sensing area 203 is defined by the sensing areas of all the photosensitive units 22 of the photosensitive panel 200, and the area outside the sensing area 203 is the non-sensing area 204, The non-sensing area 204 is used to set circuits such as the light-sensing drive circuit 23 for driving the light-sensing unit 22 to perform light-sensing, or a wiring bonding area for connecting the flexible circuit board. The shape of the sensing area 203 is consistent with the shape of the display area 101, and the size of the sensing area 203 is greater than or equal to the size of the display area 101, so that the photosensitive panel 200 can detect any position of the display area 101 that is in contact with or close to the display panel 100. Sensing of predetermined biometric information of a target object. Furthermore, the area of the photosensitive panel 200 is smaller than or equal to the area of the display panel 100 , and the shape of the photosensitive panel 100 is consistent with that of the display panel 100 , which facilitates the assembly of the photosensitive panel 200 and the display panel 100 . However, alternatively, in some implementations, the area of the photosensitive panel 200 may also be larger than the area of the display panel 100 .

In some implementations, the sensing area 203 of the photosensitive panel 200 may also be smaller than the display area 101 of the display panel 100, so as to realize the sensing of the predetermined biometric information of the target object in the partial display area 101 of the display panel 100. .

Furthermore, the display device further includes a display driving circuit (not shown in the figure), which is used to drive the plurality of display pixels to emit light, so as to be used as a light source when the photosensitive module performs light sensing. The display driving circuit can be disposed on the display panel 100 , and can also be connected to the display pixels 12 through a flexible circuit board.

Furthermore, the display device is further configured to perform touch sensing, and when the display device detects the touch or approach of the target object, the display driving circuit drives the display pixels corresponding to the touched area to emit light.

In some embodiments, please refer to FIG. 14 , which shows a partial structure of a display module in another embodiment of the present invention. The display pixel 12 includes three display pixels of red pixel R, green pixel G and blue pixel B, and other pixel structures of the display pixel 12 are not limited. For example, the display pixels can also be black and white pixels, or red pixels, green pixels and blue pixels; or red pixels, green pixels, blue pixels, white pixels; or red pixels, green pixels, blue pixels and white pixels. The above photosensitive device 220 is disposed in the non-transmissive area P2. In order to enhance the photosensitive effect of the photosensitive device 220 , the photosensitive device 220 is made as large as possible, that is, the non-light-transmitting region P2 except the switch device 222 , the scan line 201 and the data line 202 is used to form the photosensitive device 220 .

Further, referring to FIG. 15 and FIG. 16, FIG. 15 shows the structure of an electronic device according to an embodiment of the present invention, and FIG. 16 shows a cross-sectional structure of the electronic device shown in FIG. 15 along the I-I line, and FIG. A partial structure of an electronic device is shown. The electronic device is provided with a display module of any one of the above-mentioned implementation structures, which is used not only for image display of the electronic device, but also for sensing biometric information of a target object that touches or approaches the electronic device.

Electronic devices are, for example but not limited to, suitable types of electronic products such as consumer electronic products, household electronic products, vehicle-mounted electronic products, and financial terminal products. Among them, consumer electronic products such as mobile phones, tablet computers, notebook computers, desktop monitors, all-in-one computers, etc. Household electronic products such as smart door locks, TVs, refrigerators, wearable devices, etc. Car-mounted electronic products such as car navigator, car DVD and so on. Financial terminal products such as ATM machines, terminals for self-service business, etc. The electronic device shown in FIG. 15 takes a mobile terminal such as a mobile phone as an example, but the above display module can also be applied to other suitable electronic products, and is not limited to a mobile terminal such as a mobile phone.

Specifically, a display panel 100 is provided on the front of the mobile terminal 3 , and a protective cover 300 is provided above the display panel 100 . Optionally, the screen-to-body ratio of the display panel 100 is relatively high, such as more than 80%. The screen-to-body ratio refers to the ratio of the display area 101 of the display panel 100 to the front area of the mobile terminal 3 . The photosensitive panel 200 is correspondingly disposed above the display panel 100 and below the protective cover 300 . The photosensitive panel 200 is used for sensing predetermined biometric information of a target object touching or approaching any position of the display area 101 of the display panel 100 .

When the mobile terminal 3 is in a bright screen state and in a biometric information sensing mode, the display panel 100 sends out a light signal. When an object touches or approaches the display area, the photosensitive panel 200 receives the light signal reflected back by the object, converts the received light signal into a corresponding electrical signal, and obtains predetermined biometric information of the object according to the electrical signal , for example, fingerprint image information. Therefore, the photosensitive panel 200 can realize the sensing of a target object touching or approaching any position of the display area 101 .

In the electronic equipment of the embodiment of the utility model, it has the following advantages:

First, the photosensitive panel is bonded to the display panel, and the light signal sent by the display panel is used to realize the biometric information sensing of the target object without additional light source, which not only saves the cost of electronic equipment, but also realizes the contact A target object at any position in the display area of the display panel performs biometric information sensing. Moreover, the photosensitive module can be manufactured independently and then assembled with the display device, thereby speeding up the manufacture of electronic equipment.

Second, due to differences in the reflection of light signals from different parts of the target object, the light signals sensed by adjacent light-sensing units will be aliased, resulting in blurred sensing information. The anti-aliasing imaging element is provided to prevent aliasing of optical signals received by adjacent photosensitive units and improve the sensing accuracy of the photosensitive module.

Third, the photosensitive panel is placed above the display panel, so the light signal reflected by the target object directly reaches the photosensitive panel, thereby avoiding the interference of other substances during the transmission of the light signal, and improving the sensing accuracy of the photosensitive module.

Further, the electronic device further includes a touch sensor (not shown in the figure), the touch sensor is used to determine the touch area of the target object when a target object touches the protective cover, for electronic The device performs biometric information sensing within the touch area.

In some implementations, the touch sensor is either integrated with the protective cover 300 , or integrated with the photosensitive panel 200 , or integrated with the display panel 100 . Through the integrated touch sensor, not only the touch detection of the target object is realized, but also the thickness of the electronic device is reduced, which is conducive to the development of the electronic device towards thinner and lighter.

In the description of this specification, descriptions referring to the terms "one embodiment", "certain embodiments", "exemplary embodiments", "example", "specific examples", or "some examples" are meant to be combined with The specific features, structures, materials or features described in the above embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (26)

1. A photosensitive module, comprising: The photosensitive device includes a photosensitive panel for sensing light signals, the photosensitive panel is provided with a plurality of third light-transmitting areas and non-light-transmitting areas for light signals to pass through, and the non-light-transmitting areas are provided with photosensitive unit; and An anti-aliasing imaging element, located above the photosensitive panel, is used to prevent aliasing of light signals received between adjacent photosensitive units, and the anti-aliasing imaging element is provided with multiple channels for light signals to pass through a first light-transmitting area and a plurality of second light-transmitting areas, the first light-transmitting area is for the light signal approximately perpendicular to the photosensitive panel to pass through, and the second light-transmitting area corresponds to the third light-transmitting area It is set that the light signal passing through the first light-transmitting area is received by the light-sensing unit on the light-sensing panel. 2. The photosensitive module according to claim 1, wherein the photosensitive unit is disposed opposite to the first light-transmitting area. 3. The photosensitive module according to claim 1, wherein the optical signal approximately perpendicular to the photosensitive panel includes an optical signal perpendicular to the photosensitive panel, and a predetermined offset relative to the vertical direction of the photosensitive panel Set the optical signal in the range of angles. 4 . The photosensitive module according to claim 1 , wherein the anti-aliasing imaging element further comprises a light-absorbing wall, and the light-absorbing wall encloses the first light-transmitting area and the second light-transmitting area. 5 . The photosensitive module according to claim 4 , wherein the light-absorbing wall comprises a plurality of light-absorbing blocks and raising blocks alternately stacked. 6 . The photosensitive module according to claim 5 , wherein the riser is made of transparent material. 7 . 7. The photosensitive module according to claim 4, characterized in that: the first light-transmitting region and the second light-transmitting region are filled with transparent materials. 8. The photosensitive module according to claim 1, wherein the anti-aliasing imaging element comprises a plurality of alternately stacked light-absorbing layers and transparent support layers; the light-absorbing layer comprises a plurality of light-absorbing blocks arranged at intervals , the interval includes a first interval and a second interval; the transparent supporting layer is formed by filling with a transparent material, and fills the first interval and the second interval together; wherein, the area corresponding to the first interval is the The first light-transmitting region, the region corresponding to the second interval is the second light-transmitting region. 9. The photosensitive module according to claim 8, wherein the thickness of each transparent support layer is unequal. 10. The photosensitive module according to claim 8, wherein the thickness of the transparent support layer increases layer by layer. 11. The photosensitive module according to claim 1, wherein the anti-aliasing imaging element is directly formed on the photosensitive panel, or, after the anti-aliasing imaging element is manufactured independently, it is then placed on the on the photosensitive panel. 12. The photosensitive module according to claim 1, wherein each of the photosensitive units corresponds to one or more of the first light-transmitting regions. 13. The photosensitive module according to claim 1, wherein the photosensitive module further comprises a filter film, the filter film is arranged between the anti-aliasing imaging element and the photosensitive panel, Alternatively, the anti-aliasing imaging element is disposed between the filter film and the photosensitive panel, wherein the filter film is used to filter optical signals outside a predetermined wavelength band. 14. The photosensitive module according to claim 13, wherein the preset wavelength band is a wavelength band corresponding to blue or green light signals. 15 . The photosensitive module according to claim 1 , wherein the photosensitive unit includes at least one photosensitive device, and the photosensitive device selects a photosensitive device with high photosensitivity to blue light signals or green light signals. 16. The photosensitive module according to claim 1, wherein the photosensitive panel further comprises a transparent substrate, and the plurality of photosensitive units are distributed in an array on the transparent substrate. 17. The photosensitive module according to claim 16, wherein a scanning line group and a data line group electrically connected to the photosensitive unit are further provided on the transparent substrate, and the photosensitive device further includes a scanning line group and a scanning line group. A driving circuit connected to the line group and a signal processing circuit connected to the data line group, the driving circuit is used to provide a scanning drive signal to the photosensitive unit through the scanning line group, so as to drive the photosensitive unit to perform light sensing; the signal processing The circuit is used to read out the signal sensed by the photosensitive unit, and obtain the predetermined biometric information of the target object touching or approaching the photosensitive panel according to the read out signal. 18. The photosensitive module according to claim 17, wherein the driving circuit is arranged on the photosensitive panel, or is connected to the photosensitive panel through a connector, and the signal processing circuit is connected to the photosensitive panel through a connector. The above photosensitive panel connection. 19. The photosensitive module according to claim 1, wherein the photosensitive module is used for sensing fingerprint information. 20. The photosensitive module according to claim 1, characterized in that: the photosensitive device is further used to convert the sensed light signal into an electrical signal, and obtain contact or approach the photosensitive panel according to the converted electrical signal The predetermined biometric information of the target object. 21. A display module, comprising: a display device, including a display panel, for performing image display; and The photosensitive module is arranged above the display panel, and is used to sense light signals to obtain predetermined biometric information of a target object that touches or approaches the display module; the photosensitive module is the above-mentioned claim 1-20 The photosensitive module described in any one. 22. The display module according to claim 21, wherein the display panel, the photosensitive panel, and the anti-aliasing imaging element are arranged in layers. 23. The display module according to claim 21, wherein: the display panel has a display area; the photosensitive panel is used to perform biometric information sensing of a target object at any position within the display area of the display panel or, the photosensitive panel has a sensing area, and the shape of the sensing area is consistent with the shape of the display area, and the size of the sensing area is greater than or equal to the size of the display area. 24. The display module according to claim 22, wherein the display panel includes a plurality of display pixels, and the display device further includes a display driving circuit for driving the plurality of display pixels to emit light for use as A light source for the photosensitive module to perform light sensing. 25. The display module according to claim 24, wherein the display device is further used for performing touch sensing, and when the display device detects the touch or approach of the target object, the display driving circuit drives The display pixels corresponding to the touch area emit light. 26. An electronic device, characterized by comprising the photosensitive module according to any one of claims 1-20, or comprising the display module according to any one of claims 21-25.