CN106444997B - Sensor components, cover components and mobile terminals - Google Patents

Abstract

The invention provides a sensor assembly, a cover plate assembly and a mobile terminal. The sensor assembly comprises a first light emitter and a first light receiver, wherein the first light emitter is used for emitting first light rays with a first polarization direction, and the first light rays form first reflected light rays after being reflected by a blocking object; the first light receiver is used for receiving the first reflected light and filtering out light rays with polarization directions different from the first polarization direction. Because the first light and the first reflected light are linearly polarized light in the first polarization direction, the first light receiver can only receive the light in the first polarization direction, the interference of the light emitted by other light emitters to the first light receiver can be avoided, and the detection sensitivity and accuracy are improved.

Description

Sensor components, cover components and mobile terminals

Technical field

The present invention relates to the field of communications, and in particular to a sensor assembly, a cover assembly and a mobile terminal.

Background technique

With the rapid development of terminal technology, smart terminals have become more and more popular and become an indispensable device in people's lives. People can learn, entertain, etc. through smart terminals.

In the prior art, mobile terminals have proximity sensors. The proximity sensor is placed under the glass cover. The proximity sensor is used to determine whether the mobile terminal is close to or far away from an external object. Proximity sensors include infrared transmitters and infrared receivers. The infrared transmitter emits infrared rays outward, and the infrared rays are reflected by external objects to form reflected light. The infrared ray receiver receives the reflected light, and then determines whether the mobile terminal and the external object are close or far away based on the intensity of the received reflected light. state.

In practical applications, since the light signal received by the proximity sensor is not necessarily the reflected light formed by the light emitted by the corresponding transmitter of the mobile terminal when it encounters an obstacle, the reflected light may be emitted by other external devices, or may be emitted by other external devices. It may be emitted by other transmitters inside the terminal, which may interfere with the proximity detection of the proximity sensor and affect the sensitivity and accuracy of the proximity sensor.

Contents of the invention

Embodiments of the present invention provide a sensor assembly, a cover assembly and a mobile terminal, which can improve the sensitivity and accuracy of the sensor assembly.

An embodiment of the present invention provides a sensor assembly, including a first light emitter and a first light receiver,

The first light emitter is used to emit a first light with a polarization direction of a first polarization direction, and the first light is reflected by the barrier to form a first reflected light;

The first light receiver is used to receive the first reflected light and filter out the light whose polarization direction is not the first polarization direction.

An embodiment of the present invention also provides a cover plate assembly, which includes a cover plate and a sensor assembly. The sensor assembly is arranged at intervals on one side of the cover plate. The sensor assembly is any one of the sensors described above. components.

An embodiment of the present invention also provides a mobile terminal, including a housing and a cover assembly. The cover assembly is disposed on the housing. The cover assembly is the cover assembly described in any one of the above.

An embodiment of the present invention also provides a mobile terminal, including a housing and a sensor component. The sensor component is disposed in the housing. The sensor component is the sensor component described in any one of the above.

It can be seen from the above that in the sensor assembly provided by this embodiment, since the first light and the first reflected light are linearly polarized light in the first polarization direction, the first light receiver can only receive light in the first polarization direction. , can avoid the interference of light emitted by other light emitters on the first light receiver, which is beneficial to improving the sensitivity and accuracy of detection.

Description of the drawings

Figure 1 is a schematic structural diagram of a mobile terminal in a preferred embodiment of the present invention.

Figure 2 is a schematic structural diagram of the cover assembly in a preferred embodiment of the present invention.

Figure 3 is another structural schematic diagram of the cover assembly in a preferred embodiment of the present invention.

Figure 4 is a schematic structural diagram of the first light emitter in a preferred embodiment of the present invention.

Figure 5 is a schematic structural diagram of a first optical receiver in a preferred embodiment of the present invention.

Figure 6 is a schematic structural diagram of the cover plate in a preferred embodiment of the present invention.

Figure 7 is another structural schematic diagram of the cover assembly in a preferred embodiment of the present invention.

Figure 8 is another structural schematic diagram of the cover assembly in a preferred embodiment of the present invention.

Figure 9 is a schematic structural diagram of a second light emitter in a preferred embodiment of the present invention.

Figure 10 is a schematic structural diagram of a second optical receiver in a preferred embodiment of the present invention.

Detailed ways

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

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

In the description of the present invention, it should be noted that, unless otherwise clearly stated 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 detachable connection. Connection, or integral connection; it can be mechanical connection, electrical connection or mutual communication; it can be direct connection, or indirect connection through an intermediary, it can be internal connection of two elements or interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly provided and limited, the term "above" or "below" a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

The following disclosure provides many different embodiments or examples of various structures for implementing the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numbers and/or reference letters in different examples, such repetition being for purposes of simplicity and clarity and does not itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to Figure 1, which is a structural diagram of a mobile terminal 1 in a preferred embodiment of the present invention. The mobile terminal 1 can be an electronic device such as a mobile phone or an IPAD. The mobile terminal 1 includes a housing 10 , a panel 20 and a cover assembly 30 .

The housing 10 is used to form the outer contour of the mobile terminal 1 and to install other components inside the housing 10 .

The panel 20 can be a display panel, a touch display panel, etc. The panel 20 is installed on the housing 10 .

Please refer to Figure 2 and Figure 3 at the same time. The cover assembly 30 includes a sensor assembly 31 and a cover 32. The sensor assembly 31 is disposed in the housing 10. The panel 20 is disposed on the housing 10 and connected with the housing 10. The cover 32 covers the panel 20 to protect the panel 20 . The cover 32 has a non-display area 30a and a display area opposite 30b. The non-display area 30a is generally white or other light-colored, and can transmit part of invisible light and visible light. The display area 30b is transparent, so that the mobile terminal 1 can present the image on the panel 20 to the user through the display area 30b.

In some embodiments, the mobile terminal 1 further includes a receiver assembly, and correspondingly, the cover 32 is provided with a corresponding receiver hole 300 .

In some embodiments, the mobile terminal 1 further includes a fingerprint module 40 for the user to input the user's fingerprint information.

The sensor assembly 31 includes a first light emitter 311 , a first light receiver 312 , an ambient light sensor 313 and a circuit board 314 . The first light emitter 311 , the first light receiver 312 , and the ambient light sensor 313 are all disposed on the circuit board 314 and are electrically connected to the circuit board 314 .

The first light emitter 311, the first light receiver 312, and the ambient light sensor 313 are arranged on the circuit board 314 along a straight line. Their order is not limited, as long as the first light emitter 311 and the first light sensor are satisfied. The distance between the receivers 312 can be kept at a predetermined value.

For example, in the embodiment shown in FIG. 2 , the ambient light sensor 313 and the first light emitter 311 are packaged to form a first package A, and the first package A is spaced apart from the first light receiver 312 .

For example, in the embodiment shown in FIG. 3 , the ambient light sensor 313 and the first light receiver 312 are packaged to form a second package B, and the second package B is spaced apart from the first light emitter 311 .

The first light emitter 311 is used to emit invisible light with a wavelength greater than 850 nm as the first light, such as infrared light, and the first light emitted by the first light emitter 311 is polarized light. The first light ray is reflected by the barrier 70 to form a first reflected light ray with the same polarization direction.

Referring to FIG. 4 , the first light emitter 311 includes a first light emitter body 3111 and a first polarizer 3112 disposed on the light exit surface of the first light emitter body 3111 . Of course, it is understood that the first polarizer 3112 can also be disposed at other positions on the light emitting path of the first light emitting body 3111. The first light emitter body 3111 is used to emit invisible light with a wavelength greater than 850 nm, such as infrared light. The first polarizer 3112 is used to convert the light emitted by the first light emitter body 3111 into linearly polarized light, and its polarization direction is the first polarization direction.

Please refer to FIG. 5 , where the first optical receiver 313 is used to receive the first optical signal in the first polarization direction and filter out the optical signals in other polarization directions. The first light receiver 313 includes a first light receiver body 3131 and a second polarizer 3132 disposed on the light incident surface of the first light receiver body 3131 . The second polarizer 3132 is used to filter out optical signals whose polarization direction is not the first polarization direction. Of course, it is understood that the second polarizer 3132 can also be disposed at other positions on the light receiving path of the first light receiver 3131.

Please continue to refer to FIGS. 2 and 3 . The cover 32 includes a cover body 321 , a first adhesion layer 322 and a second adhesion layer 323 . The non-display area 30a of the cover 32 covers the non-display part of the panel 20, and the display area 30b of the cover 32 covers the display part of the panel 20. The first adhesion layer 322 is disposed on a side of the cover body 321 facing the sensor component 31 and located in the non-display area 30 a , and the second adhesion layer 323 is disposed on the first adhesion layer 322 .

The cover body 321 is made of transparent material. For example, the cover body 321 is a glass cover. The cover body 321 may also be a glass cover made of material such as sapphire. The first adhesion layer 322 completely covers the second adhesion layer 323 . The first adhesion layer 322 and the second adhesion layer 323 are provided to achieve the effect of hiding the internal structural components of the mobile terminal 1 and the second adhesion layer 323 . Even if the user observes from the outside of the cover body 321, he can only see the first adhesion layer 322 but not the second adhesion layer 323, that is, the outside surface of the cover 32 is displayed as the first adhesion layer 322. , while hiding the second adhesion layer 323.

The transmittance of the first adhesion layer 322 is greater than the transmittance of the second adhesion layer 323 .

For example, the transmittance of the first adhesion layer 322 may be 80% or more, and the transmittance of the second adhesion layer 323 may be 10% or less. In practical applications, the first adhesion layer 322 may be called a transmission layer and is used to transmit most signals. The second adhesion layer 323 may be called a blocking layer and is used to block most signals.

In practical applications, the second adhesion layer 323 is used to hide the internal structure of the mobile terminal 1 so that the internal structure of the mobile terminal 1 cannot be seen from outside the cover body 321 to achieve an overall aesthetic effect of the mobile terminal 1 .

The first adhesion layer 322 may be a white ink layer, and the second adhesion layer 323 may be a black ink layer. Of course, the white ink layer and the black ink layer are only examples. The first adhesion layer 322 and the second adhesion layer 323 can also be designed in other colors according to different aesthetic requirements, as long as the transmittance of the first adhesion layer 322 is greater than the third adhesion layer 322 . The transmittance of the second adhesion layer 323 is sufficient. Among them, the white ink layer, black ink layer or other color ink layers can be produced by spraying or printing process.

The first adhesion layer 322 is multi-layer, and the second adhesion layer 323 is a single layer or multi-layer. For example, the first adhesion layer 322 includes three sub-layers 3221, and the three sub-layers 3221 overlap in sequence.

Alternatively, for example, as shown in FIG. 6 , the first adhesion layer 322 may be a single layer, and the second adhesion layer 323 may be a single layer.

Please continue to refer to FIG. 2 and FIG. 3 , the second adhesion layer 323 may include a first area 323A and a second area 323B. The first area 323A can be understood as the portion where the second adhesion layer 323 and the first adhesion layer 322 overlap each other, and the second area 323B can be understood as the portion where the second adhesion layer 323 and the first adhesion layer 321 do not overlap. part. The transmittance of the first region 323A is greater than the transmittance of the second region 323B, so that the signal can pass through the first region 323A, the first adhesion layer 322, and the cover body 321 in sequence, and be reflected by the external barrier 70 and then transmit in sequence. The cover body 321, the first adhesion layer 322 and the first region 323A.

The first adhesion layer 32 covers the first area 323A of the second adhesion layer 323 so that the first area 323A cannot be seen from outside the mobile terminal 1 .

In some embodiments, when the second adhesion layer 323 is a black ink layer, the black ink in the first region 323A may be processed so that the transmittance of this region is greater than the transmittance of the second region 323B.

In some embodiments, the first area 323A may be a through hole defined by the boundary of the second area 323B, when the transmittance of this area is 100%, and the first adhesion layer 322 covers the through hole. In some embodiments, the through hole in the first region 323A may be filled with a signal-transmissible material.

In some embodiments, the first area 323A includes a first sub-area 3231A and a second sub-area 3232A.

For example, in FIG. 2 , the first sub-area 3231A is opposite to the first light emitter 311 and the ambient light sensor 313 , and the second sub-area 3232A is opposite to the first light receiver 312 . The first sub-region 3231A and the second sub-region 3232A are respectively through holes defined by the boundaries of the second region 323B.

For example, in FIG. 3 , the first sub-area 3231A is opposite to the first light emitter 311 , and the second sub-area 3232A is opposite to the first light receiver 312 and the ambient light sensor 313 . The first sub-region 3231A and the second sub-region 3232A are respectively through holes defined by the boundaries of the second region 323B.

During operation, the circuit board 314 controls the first light emitter 311 to emit a first light as a detection signal. The first light is linearly polarized light in the first polarization direction. The first light is reflected by the barrier 70 to form a first reflected light. , when the first light receiver 312 receives the first reflected light, it filters out light in other polarization directions and converts the first reflected light into a first photoelectric conversion value. The circuit board 314 performs the conversion according to the first photoelectric conversion value. Determine whether the mobile terminal 1 and the obstacle 70 are close or far away, thereby realizing the judgment of the close or far away state. Since the first light and the first reflected light are both linearly polarized light in the first polarization direction, and the first The light receiver can only receive light in the first polarization direction, which can avoid interference with the first light receiver by light emitted by other light emitters, which is beneficial to improving the sensitivity and accuracy of detection.

In other embodiments, the sensor component 31 can also be in other forms. Please refer to Figures 7 and 8. The sensor component 31 includes a first light emitter 311, a first light receiver 312, an ambient light sensor 313, Circuit board 314, second light emitter 315 and second light receiver 316. The first light emitter 311 , the first light receiver 312 , the ambient light sensor 313 , the second light emitter 315 and the second light receiver 316 are all disposed on the circuit board 314 and are electrically connected to the circuit board 314 . The first light emitter 311, the first light receiver 312, the ambient light sensor 313, the second light emitter 315 and the second light receiver 316 may be arranged along a predetermined straight line.

The distance between the first light emitter 311 and the first light receiver 312 is smaller than the distance between the second light emitter 315 and the second light receiver 316 .

For example, in FIG. 7 , the first light emitter 311 , the first light receiver 312 and the second light emitter 315 are packaged to form a third package C. The second light receiver 316 and the ambient light sensor 313 is packaged to form a fourth package D. It can be understood that the ambient light sensor 316 can also be directly packaged into the third package C.

For example, in FIG. 8 , the first light emitter 311 , the first light receiver 312 and the second light receiver 316 are packaged to form a fifth package E, and the fifth package E and the The second light emitters 315 are arranged at intervals. Further, the second light emitter 315 and the ambient light sensor 313 may be packaged to form a sixth package F. It can be understood that the ambient light sensor 313 can also be directly packaged into the fifth package E.

Among them, the first optical transmitter 311 and the first optical receiver 312 have the same structures and functions as those in the above embodiments, and therefore will not be described again.

The second light emitter 315 is used to emit invisible light with a wavelength greater than 850 nm as a second light, such as infrared light. The second light is reflected by the barrier 70 to form a second reflected light. Furthermore, the second light emitted by the second light emitter 315 is linearly polarized light whose polarization direction is the second polarization direction.

Referring to FIG. 9 , the second light emitter 315 includes a second light emitter body 3151 and a third polarizer 3152 disposed on the light exit surface of the first light emitter body 3151 . The second light emitter body 3151 is used to emit invisible light with a wavelength greater than 850 nm, such as infrared light. The third polarizer 3152 is used to convert the light emitted by the second light emitter body 3151 into linearly polarized light, and its polarization direction is the second polarization direction. It can be understood that the third polarizer 3152 can also be disposed at other positions on the light emission path of the second light emitter body 3151.

Please refer to FIG. 10 , where the second light receiver 316 receives the second reflected light whose polarization direction is the second polarization direction, and filters out the light of other polarization directions. The second light receiver 316 includes a second light receiver body 3161 and a fourth polarizer 3162 disposed on the light incident surface of the second light receiver body 3161 . The fourth polarizer 3162 is used to filter out optical signals whose polarization direction is not the second polarization direction. It is understood that the fourth polarizer 3162 can also be disposed at other positions on the light receiving path of the second light receiver body 3161.

Please continue to refer to FIGS. 7 and 8 . The cover 32 includes a cover body 321 , a first adhesion layer 322 and a second adhesion layer 323 . The non-display area 30a of the cover 32 covers the non-display part of the panel 20, and the display area 30b of the cover 32 covers the display part of the panel 20. The first adhesion layer 322 is disposed on a side of the cover body 321 facing the sensor component 31 and located in the non-display area 30 a , and the second adhesion layer 323 is disposed on the first adhesion layer 322 .

The cover body 321 is made of transparent material. For example, the cover body 321 is a glass cover. The cover body 321 may also be a glass cover made of material such as sapphire. The first adhesion layer 322 completely covers the second adhesion layer 323 . The first adhesion layer 322 and the second adhesion layer 323 are provided to achieve the effect of hiding the internal structural components of the mobile terminal 1 and the second adhesion layer 323 . That is, when the user observes from the outside of the cover body 321, he can only see the first adhesion layer 322 but not the second adhesion layer 323.

The transmittance of the first adhesion layer 322 is greater than the transmittance of the second adhesion layer 323 .

For example, the transmittance of the first adhesion layer 322 may be 80% or more, and the transmittance of the second adhesion layer 323 may be 10% or less. In practical applications, the first adhesion layer 322 may be called a transmission layer and is used to transmit most signals. The second adhesion layer 323 may be called a blocking layer and is used to block most signals.

In practical applications, the second adhesion layer 323 is used to hide the internal structure of the mobile terminal 1 so that the internal structure of the mobile terminal 1 cannot be seen from outside the cover body 321 to achieve an overall aesthetic effect of the mobile terminal 1 .

The first adhesion layer 322 may be a white ink layer, and the second adhesion layer 323 may be a black ink layer. Of course, the white ink layer and the black ink layer are only examples. The first adhesion layer 322 and the second adhesion layer 323 can also be designed in other colors according to different aesthetic requirements, as long as the transmittance of the first adhesion layer 322 is greater than the third adhesion layer 322 . The transmittance of the second adhesion layer 323 is sufficient. Among them, the white ink layer, black ink layer or other color ink layers can be produced by spraying or printing process.

The first adhesion layer 322 is multi-layer, and the second adhesion layer 323 is a single layer or multi-layer. For example, the first adhesion layer 322 includes three sub-layers 3221, and the three sub-layers 3221 overlap in sequence.

Alternatively, for example, as shown in FIG. 6 , the first adhesion layer 322 may be a single layer, and the second adhesion layer 323 may be a single layer.

Please continue to refer to FIG. 2 and FIG. 3 , the second adhesion layer 323 may include a first area 323A and a second area 323B. The first area 323A can be understood as the portion where the second adhesion layer 323 and the first adhesion layer 322 overlap each other, and the second area 323B can be understood as the portion where the second adhesion layer 323 and the first adhesion layer 321 do not overlap. part. The transmittance of the first region 323A is greater than the transmittance of the second region 323B, so that the signal can pass through the first region 323A, the first adhesion layer 322, and the cover body 321 in sequence, and be reflected by the external barrier 70 and then transmit in sequence. The cover body 321, the first adhesion layer 322 and the first area 323A.

The first adhesion layer 32 covers the first area 323A of the second adhesion layer 323 so that the first area 323A cannot be seen from outside the mobile terminal 1 .

In some embodiments, when the second adhesion layer 323 is a black ink layer, the black ink in the first region 323A may be processed so that the transmittance of this region is greater than the transmittance of the second region 323B.

In some embodiments, the first area 323A may be a through hole defined by the boundary of the second area 323B, when the transmittance of this area is 100%, and the first adhesion layer 322 covers the through hole. In some embodiments, the through hole in the first region 323A may be filled with a signal-transmissive material.

In some embodiments, the first area 323A includes a first sub-area 3231A and a second sub-area 3232A.

For example, in FIG. 7 , the first sub-region 3231A is opposite to the first light emitter 311 , the first light receiving area 312 and the second light emitter 315 , and the second sub-region 3232A is opposite to the second light receiver 316 and the ambient light sensor 316 opposite. The first sub-region 3231A and the second sub-region 3232A are respectively through holes defined by the boundaries of the second region 323B.

For example, in FIG. 8 , the first sub-region 3231A is opposite to the first light emitter 311 , the first light-receiving area 312 and the second light-receiving area 316 , and the second sub-area 3232A is opposite to the second light-emitting area. The sensor 316 and the ambient light sensor 313 are opposite. The first sub-region 3231A and the second sub-region 3232A are respectively through holes defined by the boundaries of the second region 323B.

During operation, the circuit board 314 controls the first light emitter 311 to emit a first light, and the polarization direction of the first light is the first polarization direction; the circuit board 314 controls the second light emitter 315 to emit a second light, and the second light The polarization direction is the second polarization direction; the circuit board 314 obtains the first photoelectric conversion value of the first reflected light received by the first light receiver 312, and the first reflected light passes through the obstruction from the first light. Formed by reflection; the circuit board 314 obtains the second photoelectric conversion value of the second reflected light received by the second light receiver, and the second reflected light is formed by the second light reflected by the barrier 70; the circuit board 314 The relative position of the current mobile terminal 1 relative to the barrier 70 is determined according to the first photoelectric conversion value and the first photoelectric conversion value; when the first photoelectric conversion value is located in the first proximity interval or the second photoelectric conversion value is located in the first When the second approach interval is reached, it is determined that the current mobile terminal 1 is close to the obstacle; when the first photoelectric conversion value is located in the first away interval, and the second photoelectric conversion value is located in the second away interval, it is determined that the current mobile terminal 1 is far away from the obstacle 70 . This enables detection of close or far away states, avoids interference from other light, and has the beneficial effect of improving detection sensitivity and accuracy.

In addition, the circuit board 314 can also control the panel 20 of the mobile terminal 1 such as the touch screen to turn on or off the screen according to the detected approaching or far away state. For example, when it is detected that the mobile terminal is approaching the barrier 70, The panel 20 is controlled to turn off the screen, and when it is detected that the mobile terminal 1 is away from the barrier 70 , the panel 20 is controlled to turn on the screen.

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

In summary, although the present invention has been disclosed above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims (18)

1. The cover plate assembly is characterized by comprising a sensor assembly and a cover plate, wherein the sensor assembly is arranged on one side of the cover plate at intervals; the sensor assembly comprises a first light emitter and a first light receiver, wherein the first light emitter is used for emitting first light rays with a first polarization direction, and the first light rays form first reflected light rays after being reflected by the blocking object; the first light receiver is used for receiving the first reflected light and filtering out light rays with a direction different from the first polarization direction;

the cover plate comprises a cover plate body, a first adhesion layer and a second adhesion layer, wherein the transmissivity of the first adhesion layer is larger than that of the second adhesion layer, the transmissivity of the first adhesion layer is 80% or more, the first adhesion layer is arranged on one surface of the cover plate body, facing the sensor assembly, and the second adhesion layer is arranged on the first adhesion layer;

the second adhesive layer has a first region having a transmittance greater than that of the second region, and a second region, the first adhesive layer covering the first region of the second adhesive layer, the first region being opposite to the sensor assembly such that an outer side surface of the cover plate is displayed as the first adhesive layer while hiding the second adhesive layer.

2. The cover plate assembly of claim 1, further comprising a second optical transmitter and a second optical receiver;

the second light emitter is used for emitting second light rays with a second polarization direction, and the second light rays are reflected by the blocking object to form second reflected light rays;

the second light receiver is used for receiving the second reflected light and filtering out light rays different from the second polarization direction.

3. The cover plate assembly of claim 2, wherein a distance between the first light emitter and the first light receiver is less than a distance between the second light emitter and the second light receiver.

4. The cover plate assembly of claim 2 or 3, wherein the first optical transmitter, the first optical receiver, and the second optical transmitter are packaged to form a third package, the third package being spaced apart from the second optical receiver.

5. The cover plate assembly of claim 4, further comprising an ambient light sensor, wherein the ambient light sensor and the second light receiver package form a fourth package, wherein the fourth package is spaced apart from the third package.

6. The cover assembly of claim 4, further comprising an ambient light sensor, the ambient light sensor being encapsulated in the third encapsulation.

7. The cover plate assembly of claim 2 or 3, wherein the first optical transmitter, the first optical receiver, and the second optical receiver are packaged to form a fifth package, the fifth package being spaced apart from the second optical transmitter.

8. The cover plate assembly of claim 7, further comprising an ambient light sensor, the ambient light sensor and the second light emitter package forming a sixth package.

9. The cover assembly of claim 7, further comprising an ambient light sensor, the ambient light sensor being encapsulated in the fifth encapsulant.

10. The cover plate assembly of claim 1, further comprising an ambient light sensor, the ambient light sensor and the first light emitter package forming a first package, the first package being spaced apart from the first light receiver.

11. The cover plate assembly of claim 1 further comprising an ambient light sensor, the ambient light sensor and the first light receiver package forming a second package, the second package being spaced apart from the first light emitter.

12. The cover plate assembly of claim 1, wherein the first light emitter comprises a first light emitter body and a first polarizer disposed on a light emission path of the first light emitter body, the first light receiver comprises a first light receiver body and a third polarizer disposed on a light emission path of the first light receiver body, and polarization directions of the first polarizer and the third polarizer are both first polarization directions.

13. The cover plate assembly of claim 2, wherein the second light emitter comprises a second light emitter body and a second polarizer disposed on a light emission path of the second light emitter body, the second light receiver comprises a second light receiver body and a fourth polarizer disposed on a light emission path of the second light receiver body, and polarization directions of the second polarizer and the fourth polarizer are both second polarization directions.

14. The cover plate assembly of claim 2, further comprising a circuit board, wherein the first optical transmitter, the second optical transmitter, the first optical receiver, and the second optical receiver are disposed on and electrically connected to the circuit board.

15. The cover plate assembly of claim 1, wherein the first region is a through-hole defined by a boundary of the second region.

16. The cover assembly of claim 1, wherein the first and second attachment layers are each an ink layer.

17. The cover assembly of claim 16, wherein the first adhesion layer is a white ink layer and the second adhesion layer is a black ink layer.

18. A mobile terminal, comprising a housing and a cover assembly, wherein the cover assembly is disposed on the housing, and the cover assembly is the cover assembly of any one of claims 1-17.