An electronic paper display panel and display device

Abstract

This utility model discloses an electronic paper display panel and a display device. The electronic paper display panel includes a display area and a non-display area surrounding the display area; it also includes: an array substrate with opposing first and second surfaces, each with a driving circuit layer; a first electronic paper film disposed on one side of the first surface; a second electronic paper film disposed on one side of the second surface; a first driving module disposed in the non-display area of ​​the first surface and electrically connected to the driving circuit layer on the first surface, for receiving a first driving signal to control the first electronic paper film to perform display; and a second driving module disposed in the non-display area of ​​the second surface and electrically connected to the driving circuit layer on the second surface, for receiving a second driving signal to control the second electronic paper film to perform display. This utility model embodiment can reduce the thickness of a double-sided electronic paper display device and offers diverse display modes.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to an electronic paper display panel and display device. Background Technology

[0002] As the application of electronic paper display technology becomes increasingly widespread, its use in business activities, beyond price tags, is also growing, such as in billboards and place cards. However, most electronic paper display devices currently on the market only have one surface for display, which significantly inconveniences business training or communication activities. Therefore, existing technologies have proposed double-sided electronic paper display devices. However, current double-sided electronic paper display devices are relatively thick, making them inconvenient to carry, and their display modes when both sides are active are limited. Utility Model Content

[0003] This utility model provides an electronic paper display panel and display device to solve the problems of excessive thickness and limited display modes in double-sided electronic paper display devices.

[0004] According to one aspect of the present invention, an electronic paper display panel is provided, including a display area and a non-display area surrounding the display area;

[0005] The electronic paper display panel also includes:

[0006] An array substrate includes a first surface and a second surface opposite to each other, and a driving circuit layer is disposed on both the first surface and the second surface.

[0007] A first electronic paper film is disposed on one side of the first surface;

[0008] A second electronic paper film is disposed on one side of the second surface;

[0009] A first driving module is disposed in the non-display area of ​​the first surface and electrically connected to the driving circuit layer on the first surface, for receiving a first driving signal to control the first electronic paper film to perform display.

[0010] The second driving module is disposed in the non-display area of ​​the second surface and electrically connected to the driving circuit layer on the second surface, and is used to receive the second driving signal to control the second electronic paper film to perform display.

[0011] Optionally, the driving circuit layer located on the first surface has the same pattern as the driving circuit layer located on the second surface, and they are symmetrical about the plane in which the array substrate is located.

[0012] Optionally, the first driving module includes a first driving chip and a first connection substrate;

[0013] The first connection substrate includes a first end and a second end opposite to each other; the first driver chip is bonded to the drive circuit layer of the first surface, and the first driver chip is bonded to the first end of the first connection substrate; the second end of the first connection substrate is electrically connected to the main controller.

[0014] The first driving chip is used to receive the first driving signal sent by the main controller through the first connection substrate, and drive the first electronic paper film to display.

[0015] Optionally, the second driving module includes a second driving chip and a second connection substrate;

[0016] The second connection substrate includes a third end and a fourth end opposite to each other; the second driver chip is bonded to the drive circuit layer of the second surface, and the second driver chip is bonded to the third end of the second connection substrate; the fourth end of the second connection substrate is electrically connected to the main controller.

[0017] The second driving chip is used to receive the second driving signal sent by the main controller through the second connection substrate, and drive the second electronic paper film to display.

[0018] Optionally, the non-display area includes a first non-display area and a second non-display area located on both sides of the display area;

[0019] The first driving module and the second driving module are disposed in the first non-display area or the second non-display area of ​​the array substrate;

[0020] Alternatively, the first driving module may be disposed in the first non-display area of ​​the array substrate, and the second driving module may be disposed in the second non-display area of ​​the array substrate.

[0021] Optionally, the electronic paper display panel further includes: an electric field shielding layer;

[0022] The electric field shielding layer is disposed between the array substrate and the first electronic paper film, and the orthographic projection of the electric field shielding layer on the array substrate completely covers the array substrate; the first driving module is disposed on the side of the electric field shielding layer away from the first surface;

[0023] Alternatively, the electric field shielding layer is disposed between the array substrate and the second electronic paper film, and the orthographic projection of the electric field shielding layer on the array substrate completely covers the array substrate; the second driving module is disposed on the side of the electric field shielding layer away from the second surface.

[0024] Optionally, the electric field shielding layer includes an indium tin oxide layer.

[0025] Optionally, both the first electronic paper film and the second electronic paper film include an upper electrode layer, a lower electrode layer, and an electronic ink layer disposed between the upper electrode layer and the lower electrode layer.

[0026] Optionally, the electronic paper display panel further includes: a barrier layer;

[0027] The barrier layer is disposed on the side of the first electronic paper film away from the array substrate, and the barrier layer is disposed on the side of the second electronic paper film away from the array substrate;

[0028] The orthographic projection of the barrier layer on the array substrate completely covers the orthographic projection of the first electronic paper film on the array substrate and the orthographic projection of the second electronic paper film on the array substrate.

[0029] According to another aspect of the present invention, a display device is provided, comprising an electronic paper display panel as described in any embodiment of the first aspect.

[0030] In the electronic paper display panel provided in this embodiment, the array substrate includes a first surface and a second surface facing each other, and a driving circuit layer is provided on both the first and second surfaces. A first electronic paper film is provided on the first surface, and a second electronic paper film is provided on the second surface. Compared with the related technology of directly splicing two single-sided electronic paper display modules back to back to achieve double-sided display, the electronic paper display panel provided in this embodiment can reduce the use of one array substrate. Only one array substrate is shared by the electronic paper display modules on both sides, thereby achieving double-sided display of the electronic paper display panel and effectively reducing the thickness of the display panel. In addition, a first driving module is provided on the first surface, and a second driving module is provided on the second surface. Thus, driving modules are provided on both facing surfaces of the array substrate. The first driving module controls the display of the first electronic paper film, and the second driving module controls the display of the second electronic paper film, so that the two display surfaces of the electronic paper display panel can achieve a time-sharing refresh display mode, and the displayed images can be the same or different, thereby making the display mode diverse and applicable to a wider range of scenarios and fields.

[0031] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a top view structural diagram of an electronic paper display panel according to an embodiment of the present utility model;

[0034] Figure 2 This is a schematic cross-sectional view of an electronic paper display panel along the A-A' direction according to an embodiment of the present invention.

[0035] Figure 3 This is a top view structural diagram of another electronic paper display panel according to an embodiment of the present utility model;

[0036] Figure 4 This is a cross-sectional structural diagram of an electronic paper display panel along the A-A' direction according to an embodiment of the present invention;

[0037] Figure 5 This is a cross-sectional structural diagram of an electronic paper display panel along the A-A' direction according to an embodiment of the present invention;

[0038] Figure 6 This is a cross-sectional structural diagram of an electronic paper display module according to an embodiment of the present utility model;

[0039] Figure 7 This is a schematic diagram of a display device provided according to an embodiment of the present utility model. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] This utility model embodiment provides an electronic paper display panel. Figure 1 This is a top view of an electronic paper display panel according to an embodiment of the present invention. The electronic paper display panel includes a display area AA and a non-display area NA surrounding the display area. Figure 2 This is a schematic cross-sectional view of an electronic paper display panel along the A-A' direction, according to an embodiment of this utility model. See also... Figure 1 and Figure 2 The electronic paper display panel 000 also includes: an array substrate 100, a first electronic paper film 110, a second electronic paper film 120, a first driving module 130, and a second driving module 140.

[0043] The array substrate 100 includes a first surface 101 and a second surface 102 opposite to each other, and a driving circuit layer 103 is provided on both the first surface 101 and the second surface 102.

[0044] The first electronic paper film 110 is disposed on one side of the first surface 101.

[0045] The second electronic paper film 120 is disposed on one side of the second surface 102.

[0046] The first driving module 130 is disposed in the non-display area NA of the first surface 101 and is electrically connected to the driving circuit layer 103 on the first surface 101, and is used to receive the first driving signal to control the first electronic paper film 110 to perform display.

[0047] The second driving module 140 is disposed in the non-display area NA of the second surface 102 and is electrically connected to the driving circuit layer 103 on the second surface 102, and is used to receive the second driving signal to control the second electronic paper film 120 to perform display.

[0048] Specifically, the array substrate 100 includes a first surface 101 and a second surface 102 disposed opposite to each other. A first electronic paper film 110 is disposed on the first surface 101, and a second electronic paper film 120 is disposed on the second surface 102. Corresponding driving circuit layers 103 are respectively disposed on the first surface 101 and the second surface 102. In practical applications, the driving circuit layer 103 on the first surface 101 can adjust the electric field strength of the first electronic paper film 110, thereby controlling the first electronic paper film 110 to display a corresponding image; the driving circuit layer 103 on the second surface 102 can adjust the electric field strength of the second electronic paper film 120 to control the second electronic paper film 120 to display a corresponding image, thereby realizing double-sided display of the electronic paper display panel 000. The electronic paper display panel 000 has only one array substrate 100 shared by the electronic paper display modules on both sides, which jointly control the first electronic paper film 110 and the second electronic paper film 120 to display the same or different images according to the corresponding display modes. Compared with the related technology that uses two single-sided electronic paper display modules to be directly spliced ​​back to back to achieve double-sided display, including two array substrates, the electronic paper display panel 000 provided by this utility model embodiment can reduce the use of one array substrate 100, thereby effectively reducing the thickness of the double-sided electronic paper display panel 000, making it more portable in practical applications.

[0049] A first driving module 130 is disposed in the non-display area NA of the first surface 101 of the array substrate 100. After receiving a first driving signal sent by the main controller, the first driving module 130 outputs a corresponding voltage signal to the first electronic paper film 110, thereby regulating the electric field intensity of each corresponding pixel in the first electronic paper film 110, so that the first electronic paper film 110 displays the corresponding image. Similarly, a second driving module 140 is disposed in the non-display area NA of the second surface 102 of the array substrate 100. After receiving a second driving signal sent by the main controller, the second driving module 140 outputs a corresponding voltage signal to the second electronic paper film 120, thereby regulating the electric field intensity of each corresponding pixel in the second electronic paper film 120, so that the second electronic paper film 120 displays the corresponding image. The first and second drive signals sent by the main controller can be time-division refresh signals, controlling the first drive module 130 and the second drive module 140 to drive the first electronic paper film 110 and the second electronic paper film 120 to refresh and display at different times in a time-division refresh display mode, and can display the same or different images. This makes the display mode of the double-sided electronic paper display panel 000 more diverse and applicable to a wider range of scenarios and fields.

[0050] In the electronic paper display panel provided in this embodiment, the array substrate includes a first surface and a second surface facing each other, and a driving circuit layer is provided on both the first and second surfaces. A first electronic paper film is provided on the first surface, and a second electronic paper film is provided on the second surface. Compared with the related technology of directly splicing two single-sided electronic paper display modules back to back to achieve double-sided display, the electronic paper display panel provided in this embodiment can reduce the use of one array substrate. Only one array substrate is shared by the electronic paper display modules on both sides, thereby achieving double-sided display of the electronic paper display panel and effectively reducing the thickness of the display panel. In addition, a first driving module is provided on the first surface, and a second driving module is provided on the second surface. Thus, driving modules are provided on both facing surfaces of the array substrate. The first driving module controls the display of the first electronic paper film, and the second driving module controls the display of the second electronic paper film, so that the two display surfaces of the electronic paper display panel can achieve a time-sharing refresh display mode, and the displayed images can be the same or different, thereby making the display mode diverse and applicable to a wider range of scenarios and fields.

[0051] Based on the above embodiments, see below. Figure 2 Optionally, the driving circuit layer 103 located on the first surface 101 has the same pattern as the driving circuit layer 103 located on the second surface 102, and they are symmetrical about the plane in which the array substrate 100 is located.

[0052] Specifically, since the first electronic paper film 110 and the second electronic paper film 120 disposed on the first surface 101 and the second surface 102 of the array substrate 100 are identical, the wiring pattern of the driving circuit layer 103 that controls the electric field intensity of the first electronic paper film 110 can be set to be the same as the wiring pattern of the driving circuit layer 103 that controls the electric field intensity of the second electronic paper film 120. In this way, the same photomask can be used to fabricate the driving circuit layers 103 on the two opposite surfaces of the array substrate 100. During the fabrication process, the two surfaces of the array substrate 100 are etched and metal deposited sequentially, thereby forming driving circuit layers 103 that are axially or centrally symmetrical about the plane of the array substrate 100. This reduces the use of photomasks and helps to reduce fabrication costs.

[0053] Based on the above embodiments, see below. Figure 2 Optionally, the first driving module 130 includes a first driving chip 131 and a first connecting substrate 132.

[0054] The first connection substrate 132 includes a first end and a second end opposite to each other; the first driver chip 131 is bonded to the driver circuit layer 103 of the first surface 101, and the first driver chip 131 is bonded to the first end of the first connection substrate 132; the second end of the first connection substrate 132 is electrically connected to the main controller.

[0055] The first driving chip 131 is used to receive the first driving signal sent by the main controller through the first connection substrate 132, and drive the first electronic paper film 110 to display.

[0056] Specifically, a first driving chip 131 is disposed in the non-display area NA of the first surface 101 of the array substrate 100 and is bonded and electrically connected to the driving circuit layer 103; the first end of the first connecting substrate 132 is also bonded and electrically connected to the first driving chip 131, thereby enabling the main controller to achieve electrical connection with the first driving chip 131 through the first connecting substrate 132. The main controller sends a first driving signal to the first driving chip 131, so that the first driving chip 131 controls the electric field strength of the first electronic paper film 110 through the driving circuit layer 103 to display the corresponding image. Exemplarily, the first connecting substrate 132 can be a flexible substrate, such as an indium tin oxide substrate.

[0057] Based on the above embodiments, see below. Figure 2 Optionally, the second driving module 140 includes a second driving chip 141 and a second connection substrate 142.

[0058] The second connection substrate 142 includes a third end and a fourth end opposite to each other; the second driver chip 141 is bonded to the driver circuit layer 103 of the second surface 102, and the second driver chip 141 is bonded to the third end of the second connection substrate 142; the fourth end of the second connection substrate 142 is electrically connected to the main controller.

[0059] The second driving chip 141 is used to receive the second driving signal sent by the main controller through the second connection substrate 142, and drive the second electronic paper film 120 to perform display.

[0060] Specifically, a second driving chip 141 is disposed in the non-display area NA of the second surface 102 of the array substrate 100 and is bonded and electrically connected to the driving circuit layer 103; the first end of the second connection substrate 142 is also bonded and electrically connected to the second driving chip 141, thereby enabling the main controller to achieve electrical connection with the second driving chip 141 through the second connection substrate 142. The main controller sends a second driving signal to the second driving chip 141, so that the second driving chip 141 controls the electric field strength of the second electronic paper film 120 through the driving circuit layer 103 to display the corresponding image. Exemplarily, the second connection substrate 142 can be a flexible substrate, such as an indium tin oxide substrate.

[0061] Based on the above embodiments, Figure 3 This is a top view structural diagram of another electronic paper display panel provided in this embodiment of the utility model. Figure 4This is a schematic cross-sectional view of another electronic paper display panel along the A-A' direction provided in this embodiment of the invention. (See also...) Figure 1 , Figure 3 and Figure 4 Optionally, the non-display area NA includes a first non-display area NA1 and a second non-display area NA2 located on both sides of the display area AA.

[0062] The first driving module 130 and the second driving module 140 are disposed in the first non-display area NA1 or the second non-display area NA2 of the array substrate 100; or, the first driving module 130 is disposed in the first non-display area NA1 of the array substrate 100 and the second driving module 140 is disposed in the second non-display area NA2 of the array substrate 100.

[0063] Specifically, the non-display area NA is arranged in a ring around the display area AA. For example, the non-display area located below the display area AA can be designated as the first non-display area NA1, and the non-display area located above the display area AA can be designated as the second non-display area NA2. The first driving module 130 and the second driving module 140, which are respectively arranged on opposite surfaces of the array substrate 100, can both be arranged in the first non-display area NA1 or the second non-display area NA2, that is, the first driving module 130 and the second driving module 140 are arranged in the non-display area on the same side outside the display area AA. Alternatively, for medium to large-sized electronic paper display panels, the first driving module 130 and the second driving module 140 can be respectively disposed in the first non-display area NA1 and the second non-display area NA2, that is, the first driving module 130 and the second driving module 140 are disposed in the non-display areas on opposite sides outside the display area AA; for example, the first driving module 130 can be disposed in the first non-display area NA1 and the second driving module 140 can be disposed in the second non-display area NA2; or, the first driving module 130 can be disposed in the second non-display area NA2 and the second driving module 140 can be disposed in the first non-display area NA1, without limitation.

[0064] The first connecting substrate 132 in the first driving module 130 and the second connecting substrate 142 in the second driving module 140, both at the ends furthest from the driving chip, are electrically connected to the same main controller. The main controller determines whether it needs to control the first electronic paper film 110 or the second electronic paper film 120 for display by sending corresponding driving signals to the first driving module 130 or the second driving module 140. In other words, the main controller performs a "chip selection" process before controlling the electronic paper display panel 000 to display. By sending the first or second driving signal from the main controller, time-division multiplexing of the first electronic paper film 110 and the second electronic paper film 120 is achieved, thereby preventing interference between the two display images and avoiding display abnormalities.

[0065] Based on the above embodiments, Figure 5 This is a schematic cross-sectional view of another electronic paper display panel along the A-A' direction provided in this embodiment of the invention. (See also...) Figure 5 Optionally, the electronic paper display panel 000 further includes an electric field shielding layer 150.

[0066] An electric field shielding layer 150 is disposed between the array substrate 100 and the first electronic paper film 110, and the orthographic projection of the electric field shielding layer 150 on the array substrate 100 completely covers the array substrate 100; a first driving module 130 is disposed on the side of the electric field shielding layer 150 away from the first surface 101; or, the electric field shielding layer 150 is disposed between the array substrate 100 and the second electronic paper film 120, and the orthographic projection of the electric field shielding layer 150 on the array substrate 100 completely covers the array substrate 100; a second driving module 140 is disposed on the side of the electric field shielding layer 150 away from the second surface 102.

[0067] Specifically, an electric field shielding layer 150 may be added to either of the two opposite sides of the array substrate 100. For example, the electric field shielding layer 150 may be provided between the array substrate 100 and the first electronic paper film 110, or between the array substrate 100 and the second electronic paper film 120; this is not limited to this. Figure 5 This illustration shows an electric field shielding layer 150 disposed between the array substrate 100 and the second electronic paper film 120. The electric field shielding layer 150 is a conductive film layer used to shield the electric field generated by one of the display modules, preventing the electric fields generated by the first electronic paper film 110 and the second electronic paper film 120 from radiating into each other due to their close proximity, which could lead to abnormal display images. Exemplarily, the electric field shielding layer 150 includes an indium tin oxide (ITO) layer.

[0068] An electric field shielding layer 150 is disposed on either side of the array substrate 100, and its orthographic projection on the array substrate 100 completely covers the array substrate 100, meaning that the area of ​​the electric field shielding layer 150 is the same as the area of ​​the array substrate 100. This arrangement allows the electric field shielding layer 150 to completely separate the first electronic paper film 110 or the second electronic paper film 120, thereby effectively shielding the radiation between the electric fields generated by the two display modules and ensuring the display effect of the double-sided electronic paper display panel 000.

[0069] By providing an electric field shielding layer 150 on either side of the array substrate 100, the electric field generated by one of the electronic paper display modules can be shielded, thus preventing interference between the display images of the first electronic paper film 110 and the second electronic paper film 120. In this way, the main controller can simultaneously send a first driving signal to the first driving module 130 and a second driving signal to the second driving module 140 to control the first electronic paper film 110 and the second electronic paper film 120 to display the same or different images simultaneously, achieving a dual-sided simultaneous display mode of the electronic paper display panel 000. Alternatively, the main controller can separately send a first driving signal to the first driving module 130 and a second driving signal to the second driving module 140 to control the first electronic paper film 110 and the second electronic paper film 120 to display the same or different images at different times, achieving a dual-sided time-sharing display mode of the electronic paper display panel 000. This enriches the display modes of the dual-sided electronic paper display panel 000 and expands its application areas.

[0070] Based on the above embodiments, Figure 6 This is a cross-sectional structural diagram of an electronic paper display module provided in an embodiment of this utility model. See also: Figure 6 Optionally, both the first electronic paper film 110 and the second electronic paper film 120 include an upper electrode layer 161, a lower electrode layer 162, and an electronic ink layer 163 disposed between the upper electrode layer 161 and the lower electrode layer 162.

[0071] Specifically, the upper electrode layer 161 can be a shared electrode layer, meaning that the upper electrode layer 161 is distributed across the entire surface. The lower electrode layer 162 can be an electrode layer controlling each pixel, and the electronic ink layer 163 can include multiple ink capsules. Each ink capsule can include black ink particles and white ink particles, thereby achieving black and white display under the influence of the electric field between the upper electrode layer 161 and the lower electrode layer 162; alternatively, each ink capsule can also include black ink particles, white ink particles, and colored ink particles, thereby achieving color display under the influence of electric fields of different strengths between the upper electrode layer 161 and the lower electrode layer 162.

[0072] Based on the above embodiments, see below. Figure 5 Optionally, the electronic paper display panel 000 further includes a barrier layer 170.

[0073] The barrier layer 170 is disposed on the side of the first electronic paper film 110 away from the array substrate 100, and the barrier layer 170 is disposed on the side of the second electronic paper film 120 away from the array substrate 100.

[0074] The orthographic projection of the barrier layer 170 on the array substrate 100 completely covers the orthographic projection of the first electronic paper film 110 on the array substrate 100 and the orthographic projection of the second electronic paper film 120 on the array substrate 100.

[0075] Specifically, a barrier layer 170 is provided on the outer side of both the first electronic paper film 110 and the second electronic paper film 120. The barrier layer 170 is mainly used to prevent moisture in the outside air from entering the electronic paper display module, protecting the electronic paper display module from damage. For example, the barrier layer 170 can be a PS (Protection Sheet) film, which is a high-performance anti-glare water vapor barrier film that can effectively protect the electronic paper display module from the influence of moisture and ensure the display effect. The orthogonal projection of the barrier layer 170 on the array substrate 100 completely covers the orthogonal projection of the first electronic paper film 110 and the second electronic paper film 120 on the array substrate 100, while the orthogonal projection of the barrier layer 170 on the array substrate 100 covers part of the array substrate 100. This ensures that the barrier layer 170 completely protects the first electronic paper film 110 and the second electronic paper film 120, guaranteeing the display effect and the service life of the electronic paper display panel 000.

[0076] This utility model embodiment also provides a display device. Figure 7 This is a schematic diagram of a display device provided in an embodiment of the present invention. See also: Figure 7 The display device includes the electronic paper display panel provided in any of the above embodiments. This display device can be an electronic price tag, a business signboard, a business meeting place card, etc., and its technical principles and effects are similar to those of the electronic paper display panel provided in any of the above embodiments, and will not be described in detail here.

[0077] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electronic paper display panel, characterized by, Includes a display area and a non-display area surrounding the display area; The electronic paper display panel also includes: An array substrate includes a first surface and a second surface opposite to each other, and a driving circuit layer is disposed on both the first surface and the second surface. A first electronic paper film is disposed on one side of the first surface; A second electronic paper film is disposed on one side of the second surface; A first driving module is disposed in the non-display area of ​​the first surface and electrically connected to the driving circuit layer on the first surface, for receiving a first driving signal to control the first electronic paper film to perform display. The second driving module is disposed in the non-display area of ​​the second surface and electrically connected to the driving circuit layer on the second surface, and is used to receive the second driving signal to control the second electronic paper film to perform display.

2. The electronic paper display panel of claim 1, wherein, The driving circuit layer located on the first surface has the same pattern as the driving circuit layer located on the second surface, and they are symmetrical about the plane in which the array substrate is located.

3. The electronic paper display panel of claim 1, wherein, The first driving module includes a first driving chip and a first connection substrate; The first connection substrate includes a first end and a second end opposite to each other; the first driver chip is bonded to the drive circuit layer of the first surface, and the first driver chip is bonded to the first end of the first connection substrate; the second end of the first connection substrate is electrically connected to the main controller. The first driving chip is used to receive the first driving signal sent by the main controller through the first connection substrate, and drive the first electronic paper film to display.

4. The electronic paper display panel of claim 3, wherein, The second driving module includes a second driving chip and a second connection substrate; The second connection substrate includes a third end and a fourth end opposite to each other; the second driver chip is bonded to the drive circuit layer of the second surface, and the second driver chip is bonded to the third end of the second connection substrate; The fourth terminal of the second connecting substrate is electrically connected to the main controller; The second driving chip is used to receive the second driving signal sent by the main controller through the second connection substrate, and drive the second electronic paper film to display.

5. The electronic paper display panel of claim 4, wherein, The non-display area includes a first non-display area and a second non-display area located on both sides of the display area; The first driving module and the second driving module are disposed in the first non-display area or the second non-display area of ​​the array substrate; Alternatively, the first driving module may be disposed in the first non-display area of ​​the array substrate, and the second driving module may be disposed in the second non-display area of ​​the array substrate.

6. The electronic paper display panel of claim 1, wherein, Also includes: electric field Shielding layer; The electric field shielding layer is disposed between the array substrate and the first electronic paper film, and the orthographic projection of the electric field shielding layer on the array substrate completely covers the array substrate; the first driving module is disposed on the side of the electric field shielding layer away from the first surface; Alternatively, the electric field shielding layer is disposed between the array substrate and the second electronic paper film, and the orthographic projection of the electric field shielding layer on the array substrate completely covers the array substrate; the second driving module is disposed on the side of the electric field shielding layer away from the second surface.

7. The electronic paper display panel of claim 6, wherein, The electric field shielding layer includes an indium tin oxide layer. 8.The electronic paper display panel of claim 1, wherein, Both the first electronic paper film and the second electronic paper film include an upper electrode layer, a lower electrode layer, and an electronic ink layer disposed between the upper electrode layer and the lower electrode layer. 9.The electronic paper display panel of claim 1, wherein, Also includes: Barrier layer; The barrier layer is disposed on the side of the first electronic paper film away from the array substrate, and the barrier layer is disposed on the side of the second electronic paper film away from the array substrate; The orthographic projection of the barrier layer on the array substrate completely covers the orthographic projection of the first electronic paper film on the array substrate and the orthographic projection of the second electronic paper film on the array substrate.

10. A display device, characterized by comprising: Includes the electronic paper display panel as described in any one of claims 1-9.

Images