Electronic paper display panel and electronic equipment

Abstract

The present application provides an electronic paper display panel and an electronic device, wherein the electronic paper display panel comprises a first display panel, a second display panel, a substrate and a plurality of reflective members, wherein the first display panel and the second display panel both comprise an electronic paper substrate and a display component, wherein the display components are respectively arranged on both sides of the substrate, wherein the electronic paper substrates are respectively arranged on the side of the display component away from the substrate, wherein the plurality of reflective members are arranged at intervals on the side of the electronic paper substrate away from the substrate, wherein the reflective member is used to reflect the light reflected in the electronic paper substrate toward one side of the display component. By reusing the electronic paper substrate as a light guide plate of the electronic paper display panel, the screen thickness of the electronic paper display panel is effectively reduced, and at the same time, the cost of making a light guide plate separately is reduced; the arrangement of the reflective member improves the utilization rate of light.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an electronic paper display panel and an electronic device. Background Art

[0002] Display technology has always been one of the important research directions in electronic devices. Among them, double-sided electronic paper display screens can be used for display in application scenarios such as billboards and bus stops in daily life. At present, electronic paper display screens are single-sided, and there is a lack of double-sided electronic paper display screens with front lighting. Summary of the invention

[0003] The present application discloses an electronic paper display panel, which can solve the current technical problem of lack of double-sided electronic paper display screens with front lighting while effectively reducing the screen thickness of the electronic paper display panel.

[0004] In a first aspect, the present application provides an electronic paper display panel, which includes a first display panel, a second display panel, a substrate and a plurality of reflective elements, wherein the first display panel and the second display panel each include an electronic paper substrate and a display component, wherein the display components are respectively arranged on both sides of the substrate, and the electronic paper substrates are respectively arranged on a side of the display component away from the substrate, and the plurality of reflective elements are arranged at intervals on a side of the electronic paper substrate away from the substrate, and the reflective elements are used to reflect light reflected in the electronic paper substrate toward a side where the display component is located.

[0005] By reusing the electronic paper substrate as the light guide plate of the electronic paper display panel, the screen thickness of the electronic paper display panel is effectively reduced, and at the same time, the cost of making a light guide plate separately is reduced; the provision of the reflector improves the utilization rate of light.

[0006] Optionally, the electronic paper display panel also includes a package, a driving circuit, a first backlight source and a second backlight source, the electronic paper display panel has a display area and a non-display area, the non-display area is enclosed in the display area, the package is used to encapsulate the non-display area, the driving circuit is encapsulated on one side of the package, and the first backlight source and the second backlight source are encapsulated on the other side of the package, wherein the driving circuit is used to drive the first display panel, the second display panel, the first backlight source and the second backlight source to operate, the first backlight source is used to provide light source to the first display panel, and the second backlight source is used to provide light source to the second display panel.

[0007] Optionally, the electronic paper display panel also includes a package, a first drive circuit, a second drive circuit, a first backlight source and a second backlight source, the electronic paper display panel has a display area and a non-display area, the non-display area is enclosed in the display area, the package is used to encapsulate the non-display area, the first drive circuit and the first backlight source are packaged on one side of the package, and the second drive circuit and the second backlight source are packaged on the other side of the package, wherein the first drive circuit is used to drive the first display panel and the first backlight source to operate, the second drive circuit is used to drive the second display panel and the second backlight source to operate, the first backlight source is used to provide light source to the first display panel, and the second backlight source is used to provide light source to the second display panel.

[0008] Optionally, the first backlight source is arranged on the surface of the electronic paper substrate of the first display panel in a stacking direction perpendicular to the first display panel and the substrate, and the second backlight source is arranged on the surface of the electronic paper substrate of the second display panel in a stacking direction perpendicular to the stacking direction, and the light emitting directions of the first backlight source and the second backlight source are toward the electronic paper substrate.

[0009] Optionally, the first backlight source is arranged on the surface of the electronic paper substrate of the first display panel in a stacking direction perpendicular to the first display panel and the substrate, and the second backlight source is arranged on the surface of the electronic paper substrate of the second display panel in a stacking direction perpendicular to the stacking direction, and the light emitting directions of the first backlight source and the second backlight source are away from the side where the electronic paper substrate is located, and the electronic paper display panel also includes a reflective coating, and the reflective coating is arranged on a side surface of the package adjacent to the first backlight source and / or the second backlight source in the stacking direction perpendicular to the stacking direction.

[0010] Optionally, the reflector is disposed on a side surface of the electronic paper substrate facing away from the substrate, or is disposed on a side surface of the electronic paper substrate adjacent to the substrate.

[0011] Optionally, the electronic paper display panel further includes a protective layer, which is arranged on a side of the reflector away from the electronic paper substrate and is used to protect the reflector.

[0012] Optionally, the material of the electronic paper substrate includes any one or more of glass, polymethyl methacrylate (PMMA), methyl methacrylate styrene copolymer (MS), polystyrene (PS) or polycarbonate (PC).

[0013] Optionally, the electronic paper display panel further includes an anti-reflection layer, and the anti-reflection layer is arranged on a side of the reflective element away from the electronic paper substrate.

[0014] In a second aspect, the present application further provides an electronic device, comprising a housing and the electronic paper display panel as described in the first aspect, wherein the housing is used to carry the electronic paper display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic top view of an electronic paper display panel provided in one embodiment of the present application.

[0017] Figure 2 for Figure 1 Schematic cross-sectional view along line II.

[0018] Figure 3 A schematic flow chart of a method for preparing an electronic paper display panel provided in one embodiment of the present application.

[0019] Figure 4 A schematic diagram of a first intermediate structure provided in one embodiment of the present application.

[0020] Figure 5 A schematic diagram of a second intermediate structure provided in one embodiment of the present application.

[0021] Figure 6 A schematic diagram of the packaging of an electronic paper display panel provided in one embodiment of the present application.

[0022] Figure 7 A schematic diagram of packaging of an electronic paper display panel provided in another embodiment of the present application.

[0023] Figure 8 A schematic diagram of a backlight source package provided in one embodiment of the present application.

[0024] Fig. 9 A schematic diagram of a backlight source package provided in another embodiment of the present application.

[0025] Fig.10 A schematic cross-sectional view of an electronic paper display panel provided in one embodiment of the present application.

[0026] Fig.11 A schematic cross-sectional view of an electronic paper display panel provided in another embodiment of the present application.

[0027] Fig.12A schematic cross-sectional view of an electronic paper display panel provided in yet another embodiment of the present application.

[0028] Fig.13 A schematic top view of an electronic device provided in one embodiment of the present application.

[0029] Explanation of the accompanying drawings: electronic paper display panel-1, first display panel-11, second display panel-12, electronic paper substrate-1a, display component-1b, common electrode layer-1b1, electronic ink layer-1b2, first insulating layer-1b3, pixel electrode layer-1b4, second insulating layer-1b5, packaging layer-1b6, substrate-13, reflector-14, packaging member-15, first receiving space-151, second receiving space-152, driving circuit-16, driving chip-161, power supply-162, circuit board-163, first driving circuit-164, second driving circuit-165, first backlight source-17, second backlight source-18, carrier-19, first intermediate structure-1c, second intermediate structure-1d, display area-1e, non-display area-1f, reflective coating-1g, protective layer-1h, anti-reflection layer-1i, electronic device-2, shell-21. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] This application provides an electronic paper display panel 1, please refer to Figure 1 and Figure 2 , Figure 1 A schematic top view of an electronic paper display panel provided in one embodiment of the present application; Figure 2 for Figure 1 The cross-sectional schematic diagram along line II in FIG. The electronic paper display panel 1 comprises a first display panel 11, a second display panel 12, a substrate 13 and a plurality of reflectors 14, wherein the first display panel 11 and the second display panel 12 both comprise an electronic paper substrate 1a and a display component 1b, wherein the display component 1b is respectively arranged on both sides of the substrate 13, wherein the electronic paper substrate 1a is respectively arranged on a side of the display component 1b away from the substrate 13, wherein the plurality of reflectors 14 are arranged at intervals on a side of the electronic paper substrate 1a away from the substrate 13, wherein the reflectors 14 are used to reflect the light reflected in the electronic paper substrate 1a toward a side where the display component 1b is located.

[0032] It should be noted that if Figure 2 As shown, the display component 1b generally includes a common electrode layer 1b1, an electronic ink layer 1b2, a first insulating layer 1b3, a pixel electrode layer 1b4 and a second insulating layer 1b5, the common electrode layer 1b1 is arranged on the electronic paper substrate 1a, the electronic ink layer 1b2 is arranged on a side surface of the common electrode layer 1b1 away from the electronic paper substrate 1a, the first insulating layer 1b3 is arranged on a side surface of the electronic ink layer 1b2 away from the common electrode layer 1b1, the pixel electrode layer 1b4 is arranged on a side surface of the first insulating layer 1b3 away from the electronic ink layer 1b2, the second insulating layer 1b5 is arranged on a side surface of the pixel electrode layer 1b4 away from the first insulating layer 1b3, and is arranged on the substrate 13, and the hierarchical structure in the first display panel 11 and the hierarchical structure in the second display panel 12 are mirror-symmetrical about the substrate 13. The substrate 13 is made of metal material, or ceramic or glass doped with metal nanowires. Under the control of the electrical signal transmitted in the substrate 13, the pixel electrode layer 1b4 and the common electrode layer 1b1 control the position of the ink particles in the electronic ink layer 1b2, and cooperate with the light reflected by the reflector 14 toward the display component 1b to display different grayscales or colors, thereby realizing the display of the picture. The ink particles in the electronic ink layer 1b2 can be two-color electronic ink capsules such as black and white, red and white, or ink microcups, two-color microcups or multi-color microcups, and the present application does not impose any restrictions on this.

[0033] Specifically, in addition to supporting the display component 1b, the electronic paper substrate 1a is also used to reflect and propagate the light provided by the backlight source inside it, so as to reflect the light provided by the backlight source to the reflector 14, so that the light reflected by the reflector 14 can be reflected toward the side where the display component 1b is located, so as to provide the electronic ink layer 1b2 with the light required for displaying the picture, wherein the propagation direction of the light can refer to Figure 2 That is, in this embodiment, the electronic paper substrate 1a is reused as the light guide plate of the display component 1b, thereby effectively reducing the screen thickness of the electronic paper display panel 1.

[0034] It can be understood that in this embodiment, by reusing the electronic paper substrate 1a as the light guide plate of the electronic paper display panel 1, the screen thickness of the electronic paper display panel 1 is effectively reduced, and at the same time, the cost of making a separate light guide plate is reduced; the setting of the reflector 14 improves the utilization rate of light.

[0035] This application also provides a method for preparing an electronic paper display panel, please refer to Figure 3-Figure 5 , Figure 3A schematic diagram of a process for preparing an electronic paper display panel provided in one embodiment of the present application; Figure 4 A schematic diagram of a first intermediate structure provided in one embodiment of the present application; Figure 5 A second intermediate structure diagram is provided for an embodiment of the present application. The method for preparing the electronic paper display panel comprises steps S301, S302, S303, S304, S305, S306, S307, S308, and S309, wherein steps S301, S302, S303, S304, S305, S306, S307, S308, and S309 are described in detail as follows.

[0036] S301, providing a substrate 13, and coating a second insulating layer 1b5 on one side of the substrate 13;

[0037] S302, forming a pixel electrode layer 1b4 on the second insulating layer 1b5 by sputtering, coating, developing or etching;

[0038] S303, forming a first insulating layer 1b3 on the pixel electrode layer 1b4 by coating, developing or etching;

[0039] S304, repeating the above steps to respectively form the second insulating layer 1b5, the pixel electrode layer 1b4 and the first insulating layer 1b3 on the other side of the substrate 13 to form a first intermediate structure 1c;

[0040] S305, providing an electronic paper substrate 1a, and forming a reflective member 14 on one side of the electronic paper substrate 1a by laser, molding or printing;

[0041] S306, forming a common electrode layer 1b1 on a side of the electronic paper substrate 1a away from the reflector 14 by sputtering;

[0042] S307, forming an electronic ink layer 1b2 on a side of the common electrode layer 1b1 away from the electronic paper substrate 1a by coating;

[0043] S308, forming an encapsulation layer 1b6 on a side of the electronic ink layer 1b2 away from the common electrode layer 1b1 to form a second intermediate structure 1d;

[0044] S309 , removing the encapsulation layers 1 b 6 of the two second intermediate structures 1 d respectively, and compounding them with the two opposite sides of the first intermediate structure 1 c respectively, so as to form an electronic paper display panel 1 .

[0045] In this embodiment, based on steps S301-S304, Figure 4 The first intermediate structure 1c shown in FIG. 1 is formed based on steps S305-S308 as shown in FIG. Figure 5 The second intermediate structure 1d is shown, and finally the first intermediate structure 1c and two second intermediate structures 1d are compounded to form the electronic paper display panel 1. It can be understood that in other possible implementations, the preparation method of the electronic paper display panel can also be different. For example, the second intermediate structure 1d can be prepared first, and then the first intermediate structure 1c can be prepared; the hierarchical structure of the first intermediate structure 1c and the second intermediate structure 1d can also be formed by different preparation processes; the division of the hierarchical structure of the first intermediate structure 1c and the second intermediate structure 1d can also be different from that in the present implementation, and the present application does not limit this.

[0046] In a possible implementation, please refer to Figure 6 , Figure 6 A schematic diagram of the packaging of an electronic paper display panel provided in one embodiment of the present application. The electronic paper display panel 1 also includes a packaging component 15, a driving circuit 16, a first backlight source 17, and a second backlight source 18. The electronic paper display panel 1 has a display area 1e and a non-display area 1f, wherein the non-display area 1f is surrounded by the display area 1e, the packaging component 15 is used to package the non-display area 1f, the driving circuit 16 is packaged on one side of the packaging component 15, and the first backlight source 17 and the second backlight source 18 are packaged on the other side of the packaging component 15, wherein the driving circuit 16 is used to drive the first display panel 11, the second display panel 12, the first backlight source 17, and the second backlight source 18 to work, the first backlight source 17 is used to provide light to the first display panel 11, and the second backlight source 18 is used to provide light to the second display panel 12.

[0047] Specifically, the display area 1e is used to display images, and the non-display area 1f is used to cooperate with the packaging component 15 to package the driving circuit 16, the first backlight source 17 and the second backlight source 18. Figure 6 As shown, the package 15 includes a semi-open first receiving space 151 and a closed second receiving space 152, wherein the first receiving space 151 is used to receive the first backlight source 17, the second backlight source 18 and the driving chip 161 part of the driving circuit 16, and the second receiving space 152 is used to receive the power supply 162 and the circuit board 163 and other parts of the driving circuit 16, and is electrically connected to the driving chip 161 part of the driving circuit 16 through electrical connecting lines, and the first backlight source 17 and the second backlight source 18 are electrically connected through electrical connecting lines buried in the non-display area 1f, thereby providing working voltage and control electrical signals for the driving chip 161 in the driving circuit 16, the first backlight source 17 and the second backlight source 18.

[0048] It is understandable that since the first receiving space 151 is a semi-open receiving space, after the driving chip 161 in the driving circuit 16, the first backlight source 17 and the second backlight source 18 are accommodated in the first receiving space 151, it is usually necessary to set packaging glue to encapsulate the first receiving space 151 with the packaging glue.

[0049] In this embodiment, the electronic paper display panel 1 further includes a carrier 19, and the carrier 19 is used to carry the first backlight source 17 and the second backlight source 18, wherein the light emitting direction of the first backlight source 17 is directly facing the first display panel 11, and the light emitting direction of the second backlight source 18 is directly facing the second display panel 12. It can be understood that the first backlight source 17 and the second backlight source 18 are edge-entry backlight sources, combined with the electronic paper substrate 1a being reused as the light guide plate of the electronic paper display panel 1, so that the packaging component 15 used to package the driving circuit 16, the first backlight source 17 and the second backlight source 18 has a compact structure, and the space occupied is reduced, thereby making the overall structure of the electronic paper display panel 1 thinner and lighter.

[0050] It is understandable that in other possible embodiments, the power supply 162 and the circuit board 163 in the driving circuit 16 are arranged in the second receiving space 152 on one side of the package 15, and the package 15 on the other side only includes the first receiving space 151, thereby further reducing the space occupied by the package 15. The present application does not impose any restrictions on this.

[0051] In a possible implementation, please refer to Figure 7 , Figure 7A schematic diagram of the packaging of an electronic paper display panel provided in another embodiment of the present application. The electronic paper display panel 1 also includes a packaging component 15, a first driving circuit 164, a second driving circuit 165, a first backlight source 17, and a second backlight source 18. The electronic paper display panel 1 has a display area 1e and a non-display area 1f, and the non-display area 1f is surrounded by the display area 1e. The packaging component 15 is used to package the non-display area 1f. The first driving circuit 164 and the first backlight source 17 are packaged on one side of the packaging component 15, and the second driving circuit 165 and the second backlight source 18 are packaged on the other side of the packaging component 15, wherein the first driving circuit 164 is used to drive the first display panel 11 and the first backlight source 17 to work, and the second driving circuit 165 is used to drive the second display panel 12 and the second backlight source 18 to work, and the first backlight source 17 is used to provide a light source to the first display panel 11, and the second backlight source 18 is used to provide a light source to the second display panel 12.

[0052] In this embodiment, the power supply 162 and the circuit board 163 in the first driving circuit 164 and the second driving circuit 165 are respectively arranged in the second receiving space 152 on the opposite sides of the package 15. The first driving circuit 164 and the second driving circuit 165 can also be electrically connected to each other through electrical connection lines buried in the non-display area 1f.

[0053] It can be understood that the difference between this embodiment and the previous embodiment is that the first drive circuit 164 and the second drive circuit 165 independently drive the first display panel 11 and the second display panel 12 respectively, so that the first display panel 11 and the second display panel 12 can be used to display different display screens under the control of the first drive circuit 164 and the second drive circuit 165 respectively, thereby further improving the display diversity of the electronic paper display panel 1.

[0054] In a possible implementation, please refer to Figure 8 , Figure 8 A schematic diagram of a backlight source package provided in one embodiment of the present application. The first backlight source 17 is disposed on the surface of the electronic paper substrate 1a of the first display panel 11 in a direction perpendicular to the stacking direction of the first display panel 11 and the substrate 13, and the second backlight source 18 is disposed on the surface of the electronic paper substrate 1a of the second display panel 12 in a direction perpendicular to the stacking direction, and the light emitting directions of the first backlight source 17 and the second backlight source 18 are toward the electronic paper substrate 1a.

[0055] Specifically, the stacking direction of the first display panel 11 and the substrate 13 and the direction perpendicular to the stacking direction are respectively as follows: Figure 8 It can be understood that, in this embodiment, the first display panel 11 and the second display panel 12 directly serve as the bearing parts of the first backlight source 17 and the second backlight source 18, respectively, which reduces the volume required for the first receiving space 151, that is, reduces the required space of the non-display area 1f of the electronic paper display panel 1, thereby realizing the narrow frame design of the electronic paper display panel 1.

[0056] In a possible implementation, please refer to Fig. 9 , Fig. 9 A schematic diagram of a backlight source package provided for another embodiment of the present application. The first backlight source 17 is disposed on the surface of the electronic paper substrate 1a of the first display panel 11 in a direction perpendicular to the stacking direction of the first display panel 11 and the substrate 13, and the second backlight source 18 is disposed on the surface of the electronic paper substrate 1a of the second display panel 12 in a direction perpendicular to the stacking direction. The light emitting directions of the first backlight source 17 and the second backlight source 18 are away from the side where the electronic paper substrate 1a is located, and the electronic paper display panel 1 further includes a reflective coating 1g, which is disposed on a side surface of the package 15 adjacent to the first backlight source 17 and / or the second backlight source 18 in a direction perpendicular to the stacking direction.

[0057] It can be understood that the difference between this embodiment and the previous embodiment is that the light emitting directions of the first backlight source 17 and the second backlight source 18 are different. In this embodiment, the light emitting directions of the first backlight source 17 and the second backlight source 18 are away from the side where the electronic paper substrate 1a is located, that is, toward the inner side wall of the first receiving space 151 of the package 15. Therefore, it is necessary to set the reflective coating 1g on the surface of one side of the package 15 adjacent to the first backlight source 17 and / or the second backlight source 18 in the vertical direction of the stacking, that is, set the reflective coating 1g on the inner side wall of the first receiving space 151, so that the light emitted by the first backlight source 17 and the second backlight source 18 can enter the electronic paper substrate 1a through reflection.

[0058] It is understandable that the first backlight source 17 and the second backlight source 18 can be a flip-down structure or a front-mounted structure, and the difference lies in the different light emission directions. Therefore, the packaging method of the first backlight source 17 and the second backlight source 18 provided in this embodiment and the previous embodiment can correspond to the packaging structure of the first backlight source 17 and the second backlight source 18, thereby increasing the adaptability of the electronic paper display panel 1 to electronic components with different packaging structures.

[0059] In a possible implementation, please refer to Figure 2 and Fig.10 , Fig.10 The cross-sectional view of the electronic paper display panel provided in one embodiment of the present application is as follows: The reflector 14 is disposed on a surface of the electronic paper substrate 1a facing away from the substrate 13 , or disposed on a surface of the electronic paper substrate 1a adjacent to the substrate 13 .

[0060] It can be understood that in this embodiment, if Figure 2 As shown by the dotted arrow, when the reflector 14 is arranged on the surface of the electronic paper substrate 1a facing away from the substrate 13, most of the light can be incident on the reflector 14 from the side of the reflector 14 close to the electronic paper substrate 1a, so that the reflector 14 can effectively reflect the light toward the side where the display component 1b is located. This arrangement makes the light utilization rate higher; Fig.10 The dotted arrow in the middle shows the direction of light propagation. When the reflector 14 is arranged on a side surface of the electronic paper substrate 1a adjacent to the substrate 13, part of the light will be incident on the reflector 14 from both sides perpendicular to the stacking direction. Correspondingly, the reflector 14 will reflect the part of the light back in the direction perpendicular to the stacking direction, and cannot reflect toward the side where the display component 1b is located. Therefore, this arrangement has a lower light utilization rate than the arrangement in which the reflector 14 is arranged on a side surface of the electronic paper substrate 1a away from the substrate 13. However, since the reflector 14 is arranged on a side surface of the electronic paper substrate 1a adjacent to the substrate 13, that is, arranged inside the electronic paper substrate 1a, the reflector 14 can be effectively protected to prevent the reflector 14 from being worn.

[0061] It is understandable that the reflector 14 can be selectively arranged on a side surface of the electronic paper substrate 1a facing away from the substrate 13, or on a side surface of the electronic paper substrate 1a adjacent to the substrate 13 according to actual conditions, and the present application does not impose any limitation on this.

[0062] In a possible implementation, please refer to Fig.11 , Fig.11 This is a cross-sectional schematic diagram of an electronic paper display panel provided in another embodiment of the present application. The electronic paper display panel 1 further includes a protective layer 1h, which is disposed on a side of the reflector 14 away from the electronic paper substrate 1a, and is used to protect the reflector 14.

[0063] It can be understood that when the reflector 14 is disposed on a surface of the electronic paper substrate 1a facing away from the substrate 13, Fig.11As shown, the reflector 14 may be worn, affecting the reflection effect of light, thereby causing poor display effect of the electronic paper display panel 1. Therefore, in this embodiment, by arranging the protective layer 1h on the side of the reflector 14 away from the electronic paper substrate 1a, the protective layer 1h is coated on the reflector 14, thereby achieving the purpose of protecting the reflector 14, ensuring that the reflector 14 has a good reflection effect of reflecting light toward the side where the display component 1b is located, and improving the display effect of the electronic paper display panel 1.

[0064] In a possible implementation, the material of the electronic paper substrate 1a includes any one or more of glass, polymethyl methacrylate (PMMA), methyl methacrylate styrene copolymer (MS), polystyrene (PS) or polycarbonate (PC).

[0065] It can be understood that the electronic paper substrate 1a serves as a light guide plate for the first display panel 11 and the second display panel 12, and the electronic paper substrate 1a also serves as a carrier plate for the display assembly 1b in the first display panel 11 and the second display panel 12, and it itself needs to have the property of being able to reflect light, and also needs to have a certain supporting strength. Therefore, in this embodiment, the material of the electronic paper substrate 1a includes any one or more of glass, polymethyl methacrylate (PMMA), methyl methacrylate styrene copolymer (MS), polystyrene (PS) or polycarbonate (PC).

[0066] It is understandable that in other possible implementations, the electronic paper substrate 1a may also include other organic transparent materials, which is not limited in the present application.

[0067] In a possible implementation, please refer to Fig.12 , Fig.12 This is a cross-sectional schematic diagram of an electronic paper display panel provided in another embodiment of the present application. The electronic paper display panel 1 further includes an anti-reflection layer 1i, and the anti-reflection layer 1i is disposed on a side of the reflector 14 away from the electronic paper substrate 1a.

[0068] It is understandable that the light emitted by the first backlight source 17 and the second backlight source 18 propagates in the electronic paper substrate 1a, and may not be completely reflected by the reflector 14 toward the side where the display component 1b is located. In this embodiment, in order to improve the utilization rate of light, the anti-reflection layer 1i is arranged on the side of the reflector 14 away from the electronic paper substrate 1a, so that the part of the light that is not reflected to the reflector 14 can be reflected back into the electronic paper substrate 1a for reflection and propagation until it is reflected to the reflector 14 and reflected by the reflector 14 toward the side where the display component 1b is located, thereby improving the utilization rate of light.

[0069] It should be noted that as long as no conflict occurs, the implementation methods provided in this application can be freely combined, and this application will not list them one by one here.

[0070] This application also provides an electronic device 2, please refer to Fig.13 , Fig.13 The electronic device 2 includes a housing 21 and the electronic paper display panel 1 as described above, and the housing 21 is used to carry the electronic paper display panel 1. Specifically, the electronic paper display panel 1 is described above, and this application will not repeat it here.

[0071] It should be noted that the electronic device 2 in the implementation mode of the present application can be an electronic device 2 such as a television, a mobile phone, a smart phone, a tablet computer, an e-reader, a wearable portable device, a laptop computer, etc., which can communicate with a data transfer server through the Internet. The data transfer server can be an instant messaging server, an SNS (Social Networking Services) server, etc., and the implementation mode of the present application does not limit this.

[0072] It can be understood that in this embodiment, by reusing the electronic paper substrate 1a as the light guide plate of the electronic paper display panel 1, the screen thickness of the electronic paper display panel 1 is effectively reduced, and at the same time, the cost of making a separate light guide plate is reduced, thereby reducing the thickness of the electronic device 2 and reducing the cost of the electronic device 2; the setting of the reflector 14 improves the utilization rate of light and improves the display effect of the electronic device 2.

[0073] This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above implementation methods is only used to help understand the core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An electronic paper display panel, characterized in that: The electronic paper display panel comprises a first display panel, a second display panel, a substrate and a plurality of reflective elements. The first display panel and the second display panel both comprise an electronic paper substrate and a display component. The electronic paper substrate and the display component in the first display panel are mirror-symmetrical with the electronic paper substrate and the display component in the second display panel about the substrate. The two display components are respectively arranged on both sides of the substrate. The electronic paper substrates are respectively arranged on the side of the display component away from the substrate. The electronic paper substrate is used to carry the display component and is multiplexed as a light guide plate to reflect received light to the reflective element. The plurality of reflective elements are arranged at intervals on the side of the electronic paper substrate away from the substrate. The reflective element is used to reflect the light reflected in the electronic paper substrate toward the side where the display component is located. Under the control of the electrical signal transmitted in the substrate and in conjunction with the light reflected by the reflective element toward the display component, the display components of the first display panel and the second display panel both display different grayscales or colors. The electronic paper display panel also includes a package, a driving circuit, a first backlight source and a second backlight source, wherein the first backlight source is used to provide light to the first display panel, and the second backlight source is used to provide light to the second display panel, and the package includes a semi-open first receiving space and a closed second receiving space, wherein the first receiving space is used to receive the first backlight source, the second backlight source and the driving chip part in the driving circuit, and the second receiving space is used to receive the power supply and circuit board in the driving circuit, the power supply and the circuit board are electrically connected to the driving chip in the driving circuit, and the first backlight source is electrically connected to the second backlight source.

2. The electronic paper display panel according to claim 1, characterized in that: The electronic paper display panel has a display area and a non-display area, the non-display area is surrounded by the display area, the package is used to encapsulate the non-display area, the driving circuit is encapsulated on one side of the package, and the first backlight source and the second backlight source are encapsulated on the other side of the package, wherein the driving circuit is used to drive the first display panel, the second display panel, the first backlight source and the second backlight source to operate.

3. The electronic paper display panel according to claim 1, wherein: The electronic paper display panel also includes a first driving circuit and a second driving circuit. The electronic paper display panel has a display area and a non-display area. The non-display area is surrounded by the display area. The package is used to encapsulate the non-display area. The first driving circuit and the first backlight source are encapsulated on one side of the package, and the second driving circuit and the second backlight source are encapsulated on the other side of the package. The first driving circuit is used to drive the first display panel and the first backlight source to operate, and the second driving circuit is used to drive the second display panel and the second backlight source to operate.

4. The electronic paper display panel according to claim 2 or 3, characterized in that: The first backlight source is arranged on the surface of the electronic paper substrate of the first display panel in a stacking direction perpendicular to the first display panel and the substrate, and the second backlight source is arranged on the surface of the electronic paper substrate of the second display panel in a stacking direction perpendicular to the stacking direction. The light emitting directions of the first backlight source and the second backlight source are toward the electronic paper substrate.

5. The electronic paper display panel according to claim 2 or 3, characterized in that: The first backlight source is arranged on the surface of the electronic paper substrate of the first display panel in a stacking direction perpendicular to the first display panel and the substrate, and the second backlight source is arranged on the surface of the electronic paper substrate of the second display panel in a stacking direction perpendicular to the first display panel. The light emitting directions of the first backlight source and the second backlight source are away from the side where the electronic paper substrate is located. The electronic paper display panel also includes a reflective coating, and the reflective coating is arranged on a side surface of the package adjacent to the first backlight source and / or the second backlight source in the stacking direction perpendicular to the stacking direction.

6. The electronic paper display panel according to claim 1, wherein: The reflector is arranged on a side surface of the electronic paper substrate facing away from the substrate, or on a side surface of the electronic paper substrate adjacent to the substrate.

7. The electronic paper display panel according to claim 6, characterized in that: The electronic paper display panel further comprises a protective layer, which is arranged on a side of the reflector away from the electronic paper substrate and is used to protect the reflector.

8. The electronic paper display panel according to claim 1, wherein: The material of the electronic paper substrate includes any one or more of glass, polymethyl methacrylate (PMMA), methyl methacrylate styrene copolymer (MS), polystyrene (PS) or polycarbonate (PC).

9. The electronic paper display panel according to claim 1, characterized in that: The electronic paper display panel further includes an anti-reflection layer, and the anti-reflection layer is arranged on a side of the reflector away from the electronic paper substrate.

10. An electronic device, characterized in that: The electronic device comprises a housing and an electronic paper display panel as claimed in any one of claims 1 to 9, wherein the housing is used to carry the electronic paper display panel.

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