CN118550132A - Display panel and display device - Google Patents

Abstract

The display panel comprises a first substrate, a second substrate, an electronic paper film and an antenna structure for receiving and transmitting signals; the second substrate is arranged opposite to the first substrate, and the electronic paper film is positioned between the first substrate and the second substrate; the display panel comprises a display area and a frame area surrounding the display area, and the display panel comprises a plurality of pixels positioned in the display area; and the antenna structure is positioned on at least one of the first substrate, the second substrate and the electronic paper film.

Description

Display panel and display device

Technical Field

The present disclosure relates to the field of display technology, and in particular to a display panel and a display device.

Background Art

In the related art, the antenna module of the electronic paper display device is generally integrated on the PCB board, which is easily disturbed and damaged by the external environment. At the same time, in order to ensure reliable transmission and reception capabilities, the antenna module is usually designed into a certain shape, which will occupy a part of the space, which is not conducive to the miniaturization and portability of the electronic paper display device.

The above information disclosed in this section is only for understanding the background of the inventive concept of the present disclosure and therefore the above information may contain information that does not constitute the prior art.

Summary of the invention

In one aspect, a display panel is provided, comprising a first substrate, a second substrate, an electronic paper film and an antenna structure for transmitting and receiving signals; the second substrate is arranged opposite to the first substrate; the electronic paper film is located between the first substrate and the second substrate; wherein the display panel comprises a display area and a frame area surrounding the display area, the display panel comprises a plurality of pixels located in the display area; and the antenna structure is located on at least one of the first substrate, the second substrate and the electronic paper film.

According to some exemplary embodiments, the antenna structure is located on the first substrate.

According to some exemplary embodiments, the first substrate includes a first substrate and a common electrode layer located on a side of the first substrate facing the second substrate; and the common electrode layer includes a first electrode and a second electrode insulated from each other, and the first electrode is reused as the antenna structure.

According to some exemplary embodiments, the first substrate includes a first substrate; and the antenna structure is embedded in a side of the first substrate close to the second substrate, or the antenna structure is embedded in a side of the first substrate far from the second substrate.

According to some exemplary embodiments, the first substrate includes a first substrate and a common electrode layer located on a side of the first substrate facing the second substrate; and the antenna structure is located between the first substrate and the common electrode layer.

According to some exemplary embodiments, the first substrate includes a first substrate and a functional film layer located on a side of the first substrate facing away from the second substrate; and the antenna structure is located between the first substrate and the functional film layer.

According to some exemplary embodiments, the first substrate includes a first substrate and a functional film layer located on the side of the first substrate facing away from the second substrate; and the antenna structure is embedded in the functional film layer on a side close to the first substrate, or the antenna structure is embedded in the functional film layer on a side away from the first substrate.

According to some exemplary embodiments, a first flexible circuit board is disposed on the first substrate, and the antenna structure is electrically connected to the first flexible circuit board.

According to some exemplary embodiments, a common electrode layer is disposed on a surface of the electronic paper film facing the first substrate; and the common electrode layer includes a first electrode and a second electrode insulated from each other, and the first electrode is reused as the antenna structure.

According to some exemplary embodiments, the second substrate includes a pixel electrode layer, the pixel electrode layer includes a plurality of pixel electrodes; and orthographic projections of the first electrode and the second electrode on the second substrate respectively cover an integer number of the pixel electrodes.

According to some exemplary embodiments, the display panel has a display switching state and a signal transceiving state, and the display panel is configured as follows: in response to the display panel being in the display switching state, the first electrode and the second electrode are connected to the same common voltage; in response to the display panel being in the signal transceiving state, the first electrode is connected to a working voltage corresponding to the antenna structure, and the second electrode is connected to the common voltage.

According to some exemplary embodiments, a second flexible circuit board is disposed on the second substrate; and the first electrode is electrically connected to the second flexible circuit board via a first conductive structure, and the second electrode is electrically connected to the second flexible circuit board via a second conductive structure.

According to some exemplary embodiments, the antenna structure is located in the border region of the second substrate.

According to some exemplary embodiments, the electronic paper film includes an electrophoretic display layer or a plasma display layer.

In yet another aspect, a display device is provided, comprising the display panel as described above.

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects and advantages of the present disclosure will be apparent from the following description of the present disclosure with reference to the accompanying drawings, and will help to have a comprehensive understanding of the present disclosure.

FIG. 1 schematically shows a cross-sectional view of a display panel according to some embodiments of the present disclosure.

FIG. 2 schematically shows a plan view of a common electrode layer according to some embodiments of the present disclosure.

FIG. 3 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG. 4 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG. 5 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG. 6 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG. 7 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG8 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

9A-9C schematically illustrate plan views of antenna structures according to some embodiments of the present disclosure.

FIG. 10 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

FIG. 11 schematically shows a cross-sectional view of a display panel according to some other embodiments of the present disclosure.

It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the sizes of layers, structures or regions may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

DETAILED DESCRIPTION

In the following description, for the purpose of explanation, many specific details are set forth to provide a comprehensive understanding of various exemplary embodiments. However, it is apparent that various exemplary embodiments may be implemented without these specific details or with one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, the specific shapes, configurations, and characteristics of an exemplary embodiment may be used or implemented in another exemplary embodiment without departing from the inventive concept.

In the accompanying drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and/or description. Thus, the size and relative size of the individual elements are not necessarily limited to the size and relative size shown in the drawings. When the exemplary embodiments may be implemented differently, the specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

When an element is described as being "on" another element, "connected to" another element, or "coupled to" another element, the element may be directly on, directly connected to, or directly coupled to the other element, or there may be intermediate elements. However, when an element is described as being "directly on" another element, "directly connected to" another element, or "directly coupled to" another element, there are no intermediate elements. Other terms and/or expressions used to describe the relationship between elements should be interpreted in a similar manner, for example, "between" versus "directly between", "adjacent" versus "directly adjacent", or "on" versus "directly on", etc. In addition, the term "connected" may refer to a physical connection, an electrical connection, a communication connection, and/or a fluid connection.

It should be noted that, in this article, "the same layer" refers to a layer structure formed by patterning a film layer of a specific pattern using the same film-forming process and then patterning the film layer using the same mask through a single composition process. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. That is, multiple elements, components, structures and/or parts located in the "same layer" are made of the same material and are formed through the same composition process. Generally, multiple elements, components, structures and/or parts located in the "same layer" have approximately the same thickness.

It should be understood that, although the terms first, second, etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the exemplary embodiment, a first element may be named a second element, and similarly, a second element may be named a first element.

Electronic paper, also known as digital paper, is a display technology based on electronic ink technology. Electronic ink is composed of charged nanoparticles suspended in liquid. By controlling the movement of charged nanoparticles in the liquid, various images required for display are formed. The main features of electronic paper include no light emission, relying on natural light reflection for imaging, no need for electricity to maintain static images, high contrast and low power consumption.

For example, the working principle of electronic paper is that when an electric field is applied, the charged nanoparticles move and change their arrangement to produce visible images or text. This technology enables electronic paper to display images without backlight while providing a good reading experience and visual comfort.

An electronic paper display device generally includes: a display panel and a PCB board electrically connected to the display panel. The display panel can display images under the drive of the PCB board. When the electronic paper display device displays a static image, its drive does not consume power; when the displayed image needs to be switched, a certain driving voltage needs to be applied to the display panel.

In the related art, the antenna module of the electronic paper display device is generally integrated on the PCB board, which is easily disturbed and damaged by the external environment. At the same time, in order to ensure reliable transmission and reception capabilities, the antenna module is usually designed into a certain shape, which will occupy a part of the space, which is not conducive to the miniaturization and portability of the electronic paper display device. Therefore, in order to solve the above technical problems, the embodiments of the present disclosure provide a display panel and a display device, which are conducive to the thinness of the electronic paper display device.

In some embodiments of the present disclosure, a display panel is provided, which includes a first substrate, a second substrate, an electronic paper film and an antenna structure for sending and receiving signals; the second substrate is arranged opposite to the first substrate; the electronic paper film is located between the first substrate and the second substrate; wherein the display panel includes a display area and a frame area surrounding the display area, the display panel includes a plurality of pixels located in the display area; and the antenna structure is located on at least one of the first substrate, the second substrate and the electronic paper film.

It can be understood that the embodiment of the present disclosure integrates the antenna structure into the display panel, which does not occupy the space of the electronic paper display device separately, which is conducive to making the electronic paper display device thinner and lighter, and the antenna structure is not easily disturbed and damaged by the external environment.

It should be noted that the second substrate may be an array substrate, and the first substrate is an opposite substrate of the array substrate. The second substrate includes a pixel electrode layer, and the pixel electrode layer includes a plurality of pixel electrodes. In the top view direction of the display panel, the area where one pixel electrode is located corresponds to one pixel.

It should be noted that in the embodiments of the present disclosure, the electronic paper film includes an electrophoretic display layer or a plasma display layer. Specifically, the electrophoretic display layer controls the electric field to move charged particles in the liquid to form changes in the brightness and darkness of the pixels. For example, charged white titanium oxide particles and black carbon powder particles are encapsulated in microcapsules, and the characteristics of charged particles moving toward electrodes with opposite electrical properties under the action of the electric field are used to display black and white images. The plasma display layer uses ultraviolet rays generated by gas discharge to excite fluorescent substances to emit light and form pixels. For example, thousands of sealed small low-pressure gas chambers are arranged on a glass substrate, and voltage is applied to ionize the mixed inert gas in the small low-pressure gas chamber into a plasma state. At the same time, plasma discharge occurs. The gas plasma discharge produces ultraviolet rays that are invisible to the naked eye, and then the ultraviolet rays excite the fluorescent substances to emit visible light that can be seen by the naked eye, thereby forming an image. The following is an example of an electronic paper film including an electrophoretic display layer.

It should be noted that the antenna structure of the embodiment of the present disclosure is a conductive film. The conductive film can be a metal film layer, such as a metal film layer composed of one or more metals such as Al, Mo, etc.; the conductive film can also be a transparent conductive oxide film layer, such as ITO; the conductive film can also be a transparent conductive polymer film layer. The antenna structure can specifically be composed of one or more of a patch antenna structure, an inverted F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, and a planar inverted F antenna structure, and can be adjusted according to actual needs, and the embodiments of the present disclosure are not limited thereto.

It should be noted that the antenna structure being located at least one of the first substrate, the second substrate and the electronic paper film means: the antenna structure is located on the first substrate, or the antenna structure is located on the second substrate, or the antenna structure is located on the electronic paper film, or the antenna structure is located on the first substrate and the second substrate, or the antenna structure is located on the first substrate and the electronic paper film, or the antenna structure is located on the second substrate and the electronic paper film, or the antenna structure is located on the first substrate, the second substrate and the electronic paper film.

The technical solution of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings.

1 is a schematic cross-sectional view of a display panel according to some embodiments of the present disclosure, and FIG. 2 is a schematic plan view of a common electrode layer according to some embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG. 1 and FIG. 2 , the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the first substrate 10 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101 and a common electrode layer 102 located on the side of the first substrate 101 facing the second substrate 20; and the common electrode layer 102 includes a first electrode 1021 and a second electrode 1022 that are insulated from each other, and the first electrode 1021 is reused as the antenna structure 40. Exemplarily, the first substrate 101 is a transparent substrate, such as a glass substrate or a PET film, and the electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that, in this embodiment, the second substrate 20 is an array substrate, and the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously connecting voltages to the pixel electrode layer 201 and the common electrode layer 102, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display.

It can be understood that, in this embodiment, by dividing the common electrode layer 102 into a first electrode 1021 and a second electrode 1022 that are insulated from each other, the first electrode 1021 is reused as the antenna structure 40, which can save the process of preparing the antenna separately and will not affect the thickness of the display panel. Specifically, the material of the first electrode 1021 is the same as that of the second electrode 1022, and the first electrode 1021 and the second electrode 1022 are located in the same layer, so they can be prepared in the same patterning process, thereby saving the process of preparing the antenna separately.

It is understandable that in this embodiment, since a portion of the common electrode layer 102 is reused as the antenna structure 40, that is, the antenna structure 40 is located in the display area A1 of the display panel, the antenna structure 40 can be made of a transparent conductive material to avoid interfering with the display of the pixels. Of course, it can also be made of a finer metal grid, so as not to interfere with the display of the pixels. The antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, and a planar inverted F antenna structure, and can be adjusted according to actual needs. The embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, referring to FIG. 2 , the orthographic projections of the first electrode 1021 and the second electrode 1022 on the second substrate 20 respectively cover an integer number of pixel electrodes 2011 .

It should be noted that a square dotted box in Figure 2 represents a pixel electrode 2011, the left oblique line area represents the positive projection area of the first electrode 1021 on the second substrate 20, and the small dot area represents the positive projection area of the second electrode 1022 on the second substrate 20. The first electrode 1021 and the second electrode 1022 are insulated from each other.

It can be understood that, since in the top view direction of the display panel, the area where one pixel electrode 2011 is located corresponds to one pixel, in order to avoid affecting the vertical electric field corresponding to a single pixel, the orthographic projection of one pixel electrode 2011 on the first substrate 10 falls into the area where the first electrode 1021 or the second electrode 1022 is located. In this embodiment, by making the orthographic projections of the first electrode 1021 and the second electrode 1022 on the second substrate 20 cover an integer number of pixel electrodes 2011 respectively, it is possible to avoid the situation where a single pixel electrode 2011 corresponds to both the first electrode 1021 and the second electrode 1022, thereby avoiding affecting the vertical electric field corresponding to a single pixel.

In some embodiments of the present disclosure, the display panel has a display switching state and a signal transceiving state, and the display panel is configured as follows: in response to the display panel being in the display switching state, the first electrode 1021 and the second electrode 1022 are connected to the same common voltage; in response to the display panel being in the signal transceiving state, the first electrode 1021 is connected to the working voltage corresponding to the antenna structure 40, and the second electrode 1022 is connected to the common voltage.

It can be understood that when the picture displayed by the display panel does not change, that is, when the display panel is in a static display state, it is not necessary to connect the pixel electrode layer 201 and the common electrode layer 102 to a voltage, which can save power; when the picture displayed by the display panel needs to be switched, that is, when the display panel is in a display switching state, it is necessary to connect the pixel electrode layer 201 and the common electrode layer 102 to a voltage, so that an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102, thereby controlling the movement of charged particles in the electronic paper film 30, thereby completing the display switching. Specifically, at this time, the first electrode 1021 and the second electrode 1022 are both connected to the same common voltage, which is the common voltage provided by the common electrode line on the second substrate 20 side. When the display panel needs to send and receive signals, that is, when the display panel is in a signal sending and receiving state, it is necessary to connect the first electrode 1021 to the working voltage corresponding to the antenna structure 40 separately. Since the signal sending and receiving state of the antenna structure 40 lasts for a very short time, it will not affect the display of the display panel.

1 , a second flexible circuit board 51 is disposed on the second substrate 20 . The first electrode 1021 is electrically connected to the second flexible circuit board 51 through the first conductive structure 61 , and the second electrode 1022 is electrically connected to the second flexible circuit board 51 through the second conductive structure 62 .

It is understandable that in this embodiment, since when the display panel is in the state of transmitting and receiving signals, the first electrode 1021 needs to be connected to the working voltage corresponding to the antenna structure 40 separately, and therefore, different conductive structures need to be used to respectively power the first electrode 1021 and the second electrode 1022. In this embodiment, the voltage signals of the first electrode 1021 and the second electrode 1022 are both provided by the second flexible circuit board 51 on the side of the second substrate 20, so there is no need to add an additional flexible circuit board on the side of the first substrate 10.

It should be noted that, in this embodiment, the first conductive structure 61 and the second conductive structure 62 are both arranged on the outside of the electronic paper film 30 to avoid affecting the function of the electronic paper film 30. The first conductive structure 61 and the second conductive structure 62 can be silver glue, gold balls or other conductive materials.

It should be noted that the number of the first conductive structures 61 is determined according to the number of antenna signals required by the antenna structure 40. For example, if the antenna structure 40 needs to access two antenna signals, two first conductive structures 61 are provided for transmitting the antenna signals. The number of the second conductive structures 62 is, for example, one, for transmitting a common voltage signal to the second electrode 1022.

In some embodiments of the present disclosure, the first substrate 10 also includes a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20. The functional film layer 103 can be one or more of an AG film, an HC film, and a PS film, which is used to improve the display effect of the display panel. Specifically, the AG film is an anti-glare film. By performing special treatment on the surface of the film, the surface of the film is made "coarser and hairier" and becomes an uneven matte non-reflective surface. Compared with ordinary films, the AG film has a lower specular reflectance ratio, which can reduce the amount of specular reflected light entering the human eye. While reducing the interference of ambient light, it also improves the contrast and viewing angle of the screen image, and also protects the eyes. The HC film is a hardened protective film, which uses a high-transmittance hardened PET material, has the advantages of high transmittance, wear resistance, and scratch resistance, and is used for surface protection. The PS film, i.e., a polystyrene film, is a hard transparent film with high tensile strength, which is also used to protect the display panel.

In some embodiments of the present disclosure, a driving chip 70 is further disposed on the second substrate 20 , and the driving chip 70 is used to drive pixels for display.

FIG. 3 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure, and FIG. 4 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

3 and 4 , in some embodiments of the present disclosure, the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the first substrate 10 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101; and the antenna structure 40 is embedded in the first substrate 101 on a side close to the second substrate 20 (as shown in FIG. 3), or the antenna structure 40 is embedded in the first substrate 101 on a side away from the second substrate 20 (as shown in FIG. 4). Exemplarily, the electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that in this embodiment, the second substrate 20 is an array substrate, the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously connecting the pixel electrode layer 201 and the common electrode layer 102 to voltage, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Exemplarily, the voltage of the common electrode layer 102 is provided by the second flexible circuit board 51 on the side of the second substrate 20. Specifically, the common electrode layer 102 is electrically connected to the second flexible circuit board 51 on the side of the second substrate 20 through the second conductive structure 62. It should be noted that only the number of the second conductive structure 62 is 2 as an example in FIG. 3 and FIG. 4. In other embodiments, the number of the second conductive structure 62 may also be 1.

It is understandable that when the first substrate 101 is made of organic materials such as PET, the antenna structure 40 can be embedded, and by embedding the antenna structure 40 in the first substrate 101, it will not affect other film structures of the display panel. In addition, by arranging the antenna structure 40 on the side of the common electrode layer 102 away from the pixel electrode layer 201, interference with the electric field of the pixel can be avoided.

In this embodiment, the antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and can be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, the first substrate 10 further includes a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20. The functional film layer 103 may be one or more of an AG film, an HC film, and a PS film, and is used to improve the display effect of the display panel. A driving chip 70 is also provided on the second substrate 20, and the driving chip 70 is used to drive the pixels for display.

FIG. 5 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG5 , the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the first substrate 10 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101 and a common electrode layer 102 located on the side of the first substrate 101 facing the second substrate 20; and the antenna structure 40 is located between the first substrate 101 and the common electrode layer 102. The antenna structure 40 is separated from the common electrode layer 102 by an insulating layer 104, and the insulating layer 104 can be an organic or inorganic film layer, the inorganic film layer can be silicon nitride, and the organic film layer can be a transparent insulating glue or a transparent resin layer. Exemplarily, the first substrate 101 is a transparent substrate, such as a glass substrate or a PET film, and the electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that in this embodiment, the second substrate 20 is an array substrate, the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously connecting the pixel electrode layer 201 and the common electrode layer 102 to voltage, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Exemplarily, the voltage of the common electrode layer 102 is provided by the second flexible circuit board 51 on the side of the second substrate 20. Specifically, the common electrode layer 102 is electrically connected to the second flexible circuit board 51 on the side of the second substrate 20 through the second conductive structure 62. It should be noted that FIG. 5 only illustrates the example of the number of the second conductive structure 62 being 2. In other embodiments, the number of the second conductive structure 62 may also be 1.

It is understandable that when the first substrate 101 is a glass substrate, the antenna structure 40 can be disposed between the first substrate 101 and the common electrode layer 102, and the antenna structure 40 and the common electrode layer 102 are separated by an insulating layer 104. By disposing the antenna structure 40 on a side of the common electrode layer 102 away from the pixel electrode layer 201, interference with the electric field of the pixel can be avoided.

In this embodiment, the antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and can be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, the first substrate 10 further includes a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20. The functional film layer 103 may be one or more of an AG film, an HC film, and a PS film, and is used to improve the display effect of the display panel. A driving chip 70 is also provided on the second substrate 20, and the driving chip 70 is used to drive the pixels for display.

FIG. 6 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG6 , the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the first substrate 10 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101 and a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20; and the antenna structure 40 is located between the first substrate 101 and the functional film layer 103. Among them, the gap of the antenna structure 40 is filled with an insulating material, and the insulating material can be an organic or inorganic film layer, the inorganic film layer can be silicon nitride, and the organic film layer can be a transparent insulating glue or a transparent resin layer. Exemplarily, the first substrate 101 is a transparent substrate, such as a glass substrate or a PET film. The functional film layer 103 can be one or more of an AG film, an HC film, and a PS film. The electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that in this embodiment, the second substrate 20 is an array substrate, the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously connecting voltages to the pixel electrode layer 201 and the common electrode layer 102, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Exemplarily, the voltage of the common electrode layer 102 is provided by the second flexible circuit board 51 on the side of the second substrate 20. Specifically, the common electrode layer 102 is electrically connected to the second flexible circuit board 51 on the side of the second substrate 20 through the second conductive structure 62. It should be noted that FIG. 6 only illustrates the example of the number of the second conductive structures 62 being 2. In other embodiments, the number of the second conductive structures 62 may also be 1.

It can be understood that by arranging the antenna structure 40 on a side of the common electrode layer 102 away from the pixel electrode layer 201 , interference with the electric field of the pixel can be avoided.

In this embodiment, the antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and can be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, a driving chip 70 is further disposed on the second substrate 20 , and the driving chip 70 is used to drive pixels for display.

FIG. 7 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure, and FIG. 8 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG7 and FIG8 , the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the first substrate 10 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101 and a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20; and the antenna structure 40 is embedded in the functional film layer 103 on the side close to the first substrate 101 (as shown in FIG. 7), or the antenna structure 40 is embedded in the functional film layer 103 on the side away from the first substrate 101 (as shown in FIG. 8). Exemplarily, the first substrate 101 is a transparent substrate, such as a glass substrate or a PET film, and the electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that in this embodiment, the second substrate 20 is an array substrate, the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously applying voltage to the pixel electrode layer 201 and the common electrode layer 102, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Exemplarily, the voltage of the common electrode layer 102 is provided by the second flexible circuit board 51 on the side of the second substrate 20. Specifically, the common electrode layer 102 is electrically connected to the second flexible circuit board 51 on the side of the second substrate 20 through the second conductive structure 62. It should be noted that FIG. 7 and FIG. 8 only illustrate the number of the second conductive structure 62 as 2 as an example. In other embodiments, the number of the second conductive structure 62 may also be 1.

It is understandable that, since the functional film layer 103 is one or more of an AG film, an HC film, and a PS film, the antenna structure 40 can be embedded therein, and by embedding the antenna structure 40 in the functional film layer 103, it will not affect other film layer structures of the display panel. In addition, in this embodiment, by arranging the antenna structure 40 on a side of the common electrode layer 102 away from the pixel electrode layer 201, interference with the electric field of the pixel can be avoided.

In this embodiment, the antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and can be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, a driving chip 70 is further disposed on the second substrate 20 , and the driving chip 70 is used to drive pixels for display.

9A-9C are plan view schematic diagrams of antenna structures according to some embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIGS. 9A to 9C , a first flexible circuit board 52 is disposed on the first substrate 10. The antenna structure 40 in the first substrate 10 is electrically connected to the first flexible circuit board 52. In other words, a first flexible circuit board 52 can be added on the side of the first substrate 10 to provide an operating voltage to the antenna structure 40 in the first substrate 10.

Further, when the common electrode layer 102 in the first substrate 10 is not reused as the antenna structure 40, that is, in the embodiments provided in Figures 3 to 8, a first flexible circuit board 52 can be provided on the first substrate 10 to provide an operating voltage to the antenna structure 40. In the multiple embodiments of Figures 3 to 8, the antenna structure 40 can be provided in the frame area A2 (as shown in Figure 9A) or in the display area A1 (as shown in Figures 9B and 9C). When the antenna structure 40 is provided in the frame area A2, it can be directly electrically connected to the first flexible circuit board 52. The antenna structure 40 can be made of a metal film layer, such as a metal film layer composed of one or more metals such as Al, Mo, etc. When the antenna structure 40 is provided in the display area A1, it can be electrically connected to the first flexible circuit board 52 through a metal trace. The antenna structure 40 can be made of a transparent conductive material, such as ITO or a transparent conductive polymer material.

It should be noted that Figures 9A to 9C only show the trajectory of one type of antenna structure 40, and the trajectory of the antenna structure 40 is not necessarily the shape shown in Figures 9A to 9C. In other embodiments, the antenna structure 40 may also be composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a ring antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and may be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

FIG. 10 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG. 10 and FIG. 2 , the display panel includes a first substrate 10, a second substrate 20, an electronic paper film 30, and an antenna structure 40 for transmitting and receiving signals. A common electrode layer 102 is provided on a surface of the electronic paper film 30 facing the first substrate 10; and the common electrode layer 102 includes a first electrode 1021 and a second electrode 1022 insulated from each other, and the first electrode 1021 is reused as the antenna structure 40.

Specifically, in this embodiment, the common electrode layer 102 is located on the electronic paper film 30. In this embodiment, the second substrate 20 is an array substrate, and the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The common electrode layer 102 is located on the upper surface of the electronic paper film 30. By simultaneously applying voltage to the pixel electrode layer 201 and the common electrode layer 102, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Among them, the first substrate 10 includes a first substrate 101, and the first substrate 101 is, for example, a PET film.

10, the electronic paper film 30 is bonded to the second substrate 20 by a first optical adhesive 81, the common electrode layer 102 is prepared on the upper surface of the electronic paper film 30, the first substrate 101 is prepared on the upper surface of the common electrode layer 102, and the functional film layer 103 is bonded to the first substrate 101 by a second optical adhesive 82. The first substrate 101, the common electrode layer 102 and the electronic paper film 30 are combined into an electronic ink film (FPL), and the functional film layer 103 can be one or more of an AG film, an HC film, and a PS film, which is used to improve the display effect of the display panel.

It can be understood that by dividing the common electrode layer 102 into a first electrode 1021 and a second electrode 1022 that are insulated from each other, and reusing the first electrode 1021 as the antenna structure 40, it is possible to save the process of preparing the antenna separately and not affect the thickness of the display panel. Specifically, the material of the first electrode 1021 is the same as that of the second electrode 1022, and the first electrode 1021 and the second electrode 1022 are located in the same layer, so they can be prepared in the same patterning process, thereby saving the process of preparing the antenna separately.

It is understandable that in this embodiment, since a portion of the common electrode layer 102 is reused as the antenna structure 40, that is, the antenna structure 40 is located in the display area A1 of the display panel, the antenna structure 40 can be made of a transparent conductive material to avoid interfering with the display of the pixels. Of course, it can also be made of a finer metal grid, so as not to interfere with the display of the pixels. The antenna structure 40 can be specifically composed of one or more of a patch antenna structure 4, an inverted F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, and a planar inverted F antenna structure, and can be adjusted according to actual needs. The embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, referring to FIG. 2 , the orthographic projections of the first electrode 1021 and the second electrode 1022 on the second substrate 20 respectively cover an integer number of pixel electrodes 2011 .

It should be noted that a square dotted box in Figure 2 represents a pixel electrode 2011, the left oblique line area represents the positive projection area of the first electrode 1021 on the second substrate 20, and the small dot area represents the positive projection area of the second electrode 1022 on the second substrate 20. The first electrode 1021 and the second electrode 1022 are insulated from each other.

It can be understood that, since in the top view direction of the display panel, the area where one pixel electrode 2011 is located corresponds to one pixel, in order to avoid affecting the vertical electric field corresponding to a single pixel, the orthographic projection of one pixel electrode 2011 on the first substrate 10 should fall into the area where the first electrode 1021 or the second electrode 1022 is located. In this embodiment, by making the orthographic projections of the first electrode 1021 and the second electrode 1022 on the second substrate 20 cover an integer number of pixel electrodes 2011 respectively, it is possible to avoid the situation where a single pixel electrode 2011 corresponds to both the first electrode 1021 and the second electrode 1022, thereby avoiding affecting the vertical electric field corresponding to a single pixel.

In some embodiments of the present disclosure, the display panel has a display switching state and a signal transceiving state, and the display panel is configured as follows: in response to the display panel being in the display switching state, the first electrode 1021 and the second electrode 1022 are connected to the same common voltage; in response to the display panel being in the signal transceiving state, the first electrode 1021 is connected to the working voltage corresponding to the antenna structure 40, and the second electrode 1022 is connected to the common voltage.

It can be understood that when the picture displayed by the display panel does not change, that is, when the display panel is in a static display state, it is not necessary to connect the pixel electrode layer 201 and the common electrode layer 102 to a voltage, which can save power; when the picture displayed by the display panel needs to be switched, that is, when the display panel is in a display switching state, it is necessary to connect the pixel electrode layer 201 and the common electrode layer 102 to a voltage, so that an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102, thereby controlling the movement of charged particles in the electronic paper film 30, thereby completing the display switching. Specifically, at this time, the first electrode 1021 and the second electrode 1022 are both connected to the same common voltage, which is the common voltage provided by the common electrode line on the second substrate 20 side. When the display panel needs to send and receive signals, that is, when the display panel is in a signal sending and receiving state, it is necessary to connect the first electrode 1021 to the working voltage corresponding to the antenna structure 40 separately. Since the signal sending and receiving state of the antenna structure 40 lasts for a very short time, it will not affect the display of the display panel.

10 , a second flexible circuit board 51 is disposed on the second substrate 20 . The first electrode 1021 is electrically connected to the second flexible circuit board 51 through the first conductive structure 61 , and the second electrode 1022 is electrically connected to the second flexible circuit board 51 through the second conductive structure 62 .

It is understandable that in this embodiment, since when the display panel is in the state of transmitting and receiving signals, the first electrode 1021 needs to be connected to the working voltage corresponding to the antenna structure 40 separately, and therefore, different conductive structures need to be used to respectively power the first electrode 1021 and the second electrode 1022. In this embodiment, the voltage signals of the first electrode 1021 and the second electrode 1022 are both provided by the second flexible circuit board 51 on the side of the second substrate 20, so there is no need to add an additional flexible circuit board on the side of the first substrate 10.

It should be noted that, in this embodiment, the first conductive structure 61 and the second conductive structure 62 are both arranged in the connection hole of the electronic paper film 30. The first conductive structure 61 and the second conductive structure 62 are arranged by digging holes in the electronic paper film 30 to reduce the width of the frame area A2 and realize narrow frame display. The first conductive structure 61 and the second conductive structure 62 can be silver glue, gold balls or other conductive materials.

It should be noted that the number of the first conductive structures 61 is determined according to the number of antenna signals required by the antenna structure 40. For example, if the antenna structure 40 needs to access two antenna signals, two first conductive structures 61 are provided for transmitting the antenna signals. The number of the second conductive structures 62 is, for example, one, for transmitting a common voltage signal to the second electrode 1022.

In some embodiments of the present disclosure, EC glue 90, ie, epoxy resin-type heat-curing glue, is further disposed on the outer side of the electronic paper film 30 to prevent water vapor from penetrating into the electronic ink film (FPL) from all sides.

It should be noted that the water content of the electronic ink film (FPL) needs to be kept stable, and changes in the water content will directly affect the display effect of the electronic paper. Therefore, in the production process of the electronic paper display panel, a material is required to seal the electronic ink film on all sides to prevent the water vapor in the microcapsule 301 from entering or escaping. EC glue 90 is a two-component epoxy resin glue with good adhesion, weather resistance and heat resistance. Using EC glue 90 as the packaging material of the electronic ink film (FPL) can effectively prevent the entry or loss of water vapor.

In some embodiments of the present disclosure, a driving chip 70 is further disposed on the second substrate 20 , and the driving chip 70 is used to drive pixels for display.

FIG. 11 is a schematic cross-sectional view of a display panel according to some other embodiments of the present disclosure.

In some embodiments of the present disclosure, referring to FIG. 11 , the display panel includes a first substrate 10 , a second substrate 20 , an electronic paper film 30 , and an antenna structure 40 for transmitting and receiving signals. The antenna structure 40 is located in the frame area A2 of the second substrate 20 .

Specifically, in this embodiment, the first substrate 10 includes a first substrate 101 and a functional film layer 103 located on the side of the first substrate 101 facing away from the second substrate 20. Exemplarily, the first substrate 101 is a transparent substrate, such as a glass substrate or a PET film. The functional film layer 103 can be one or more of an AG film, an HC film, and a PS film. The electronic paper film 30 includes a plurality of microcapsules 301.

It can be understood that in this embodiment, the second substrate 20 is an array substrate, the second substrate 20 includes a pixel electrode layer 201, and the pixel electrode layer 201 includes a plurality of pixel electrodes 2011. The first substrate 10 is a substrate opposite to the second substrate 20, and the first substrate 10 includes a common electrode layer 102. By simultaneously connecting the pixel electrode layer 201 and the common electrode layer 102 to voltage, an electric field is generated between the pixel electrode layer 201 and the common electrode layer 102 to control the movement of charged particles in the electronic paper film 30, thereby completing the corresponding image display. Exemplarily, the voltage of the common electrode layer 102 is provided by the second flexible circuit board 51 on the side of the second substrate 20. Specifically, the common electrode layer 102 is electrically connected to the second flexible circuit board 51 on the side of the second substrate 20 through the second conductive structure 62. It should be noted that FIG. 11 only illustrates the example of the number of the second conductive structure 62 being 2. In other embodiments, the number of the second conductive structure 62 may also be 1.

It can be understood that, in this embodiment, by disposing the antenna structure 40 in the frame area A2 of the second substrate 20 , interference with the electric field of the pixel can be avoided.

In this embodiment, the antenna structure 40 can be specifically composed of one or more of a patch antenna structure, an inverted-F antenna structure, a closed and open slot antenna structure, a loop antenna structure, a monopole, a multi-stage, or a planar inverted-F antenna structure, and can be adjusted according to actual needs, but the embodiments of the present disclosure are not limited thereto.

In some embodiments of the present disclosure, a driving chip 70 is further disposed on the second substrate 20 , and the driving chip 70 is used to drive pixels for display.

The present disclosure also provides a display device, including the above display panel. The specific structure of the display panel is shown in Figures 1 to 11 and related descriptions, which will not be repeated here. It can be understood that the antenna structure 40 of the present disclosure can be integrated in one or more positions of the first substrate 10, the electronic paper film 30, and the second substrate 20, and is not easily disturbed and damaged by the external environment, does not occupy the space of the display device alone, and is conducive to realizing the thinness of the display device.

It will be appreciated by those skilled in the art that the features described in the various embodiments and/or claims of the present disclosure may be combined and/or combined in a variety of ways, even if such combinations and/or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and/or claims of the present disclosure may be combined and/or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and/or combinations fall within the scope of the present disclosure.

Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims (15)

1. A display panel, comprising: a first substrate; a second substrate, the second substrate being arranged opposite to the first substrate; an electronic paper film, the electronic paper film being located between the first substrate and the second substrate; and Antenna structure for transmitting and receiving signals; Wherein, the display panel comprises a display area and a frame area surrounding the display area, and the display panel comprises a plurality of pixels located in the display area; and The antenna structure is located on at least one of the first substrate, the second substrate, and the electronic paper film. 2 . The display panel according to claim 1 , wherein the antenna structure is located on the first substrate. 3. The display panel according to claim 2, wherein the first substrate comprises a first substrate and a common electrode layer located on a side of the first substrate facing the second substrate; and The common electrode layer includes a first electrode and a second electrode insulated from each other, and the first electrode is multiplexed as the antenna structure. 4. The display panel according to claim 2, wherein the first substrate comprises a first underlay; and The antenna structure is embedded in a side of the first substrate close to the second substrate, or the antenna structure is embedded in a side of the first substrate far from the second substrate. 5. The display panel according to claim 2, wherein the first substrate comprises a first substrate and a common electrode layer located on a side of the first substrate facing the second substrate; and The antenna structure is located between the first substrate and the common electrode layer. 6. The display panel according to claim 2, wherein the first substrate comprises a first substrate and a functional film layer located on a side of the first substrate facing away from the second substrate; and The antenna structure is located between the first substrate and the functional film layer. 7. The display panel according to claim 2, wherein the first substrate comprises a first substrate and a functional film layer located on a side of the first substrate facing away from the second substrate; and The antenna structure is embedded in a side of the functional film layer close to the first substrate, or the antenna structure is embedded in a side of the functional film layer far from the first substrate. 8 . The display panel according to claim 4 , wherein a first flexible circuit board is disposed on the first substrate, and the antenna structure is electrically connected to the first flexible circuit board. 9. The display panel according to claim 1, characterized in that a common electrode layer is provided on a surface of the electronic paper film facing the first substrate; and The common electrode layer includes a first electrode and a second electrode insulated from each other, and the first electrode is multiplexed as the antenna structure. 10. The display panel according to claim 3 or 9, wherein the second substrate comprises a pixel electrode layer, and the pixel electrode layer comprises a plurality of pixel electrodes; and The orthographic projections of the first electrode and the second electrode on the second substrate respectively cover an integer number of the pixel electrodes. 11. The display panel according to claim 3 or 9 is characterized in that the display panel has a display switching state and a signal transmitting and receiving state, and the display panel is configured as follows: in response to the display panel being in the display switching state, the first electrode and the second electrode are connected to the same common voltage; in response to the display panel being in the signal transmitting and receiving state, the first electrode is connected to the working voltage corresponding to the antenna structure, and the second electrode is connected to the common voltage. 12. The display panel according to claim 11, wherein a second flexible circuit board is disposed on the second substrate; and The first electrode is electrically connected to the second flexible circuit board via a first conductive structure, and the second electrode is electrically connected to the second flexible circuit board via a second conductive structure. 13 . The display panel according to claim 1 , wherein the antenna structure is located in the frame area of the second substrate. 14 . The display panel according to claim 1 , wherein the electronic paper film comprises an electrophoretic display layer or a plasma display layer. 15. A display device, comprising the display panel according to any one of claims 1-14.