Electronic paper display device
By dividing the entire surface driving unit of the electronic paper display device into a plurality of first and second display driving units and driving them alternately through the driving modules, the power consumption and duration extension of the oversized electronic paper display device when achieving picture uniformity are solved. problem and achieve efficient screen display.
Patent Information
- Application Number
- CN202421040309.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When achieving screen uniformity, the ultra-large-sized electronic paper display device needs to increase the driving voltage or driving time, resulting in an increase in power consumption and an extension of the screen switching time.
The entire surface driving unit of the electronic paper display device is divided into a plurality of first display driving units and a plurality of second display driving units, and the driving modules are used to alternately drive the electronic paper display panel to achieve multi-segment display driving.
Without increasing the driving voltage and driving time, normal display of an oversized electronic paper display device is achieved, and blank areas on the screen are avoided.
Smart Images
Figure CN222379971U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electronic paper, and in particular to an electronic paper display device. Background Art
[0002] Electronic paper display devices are generally used in small and medium sizes. Because of their unique driving method, their development size is limited. When it is necessary to drive an extra-large electronic paper, a large-sized display driver module is required, and it is also necessary to consider increasing the driving voltage or increasing the driving time to achieve the uniformity of the screen of the extra-large electronic paper display. Large-sized display driver modules are difficult to manufacture and expensive, and when driven, they will also increase the power consumption of the entire display device and the time it takes to switch screens. Therefore, the above problems need to be solved urgently for the display of extra-large electronic paper display devices.
[0003] Currently, electronic paper display devices are mainly composed of an electronic paper display layer and driving electrodes located on the upper and lower sides of the electronic paper display layer. The driving electrodes form a driving electric field to drive the microcapsules in the electronic paper display layer to display images and texts. It is precisely because of this driving method that the size development of electronic paper display devices is limited, so they are usually suitable for small and medium-sized displays.
[0004] In the process of implementing this application, the applicant found that when the current electronic paper display device is used in an ultra-large-size display, it is necessary to increase the driving voltage of the driving electrode or increase the driving time of the driving electrode to achieve the uniformity of the display screen of the ultra-large-size display, but this will increase the power consumption of the entire electronic paper display device and the screen switching time. Therefore, it is urgent to solve this problem for the display of ultra-large-size electronic paper display devices. Utility Model Content
[0005] The embodiment of the present application provides an electronic paper display device, which solves the problem of increasing power consumption and the duration of switching screens in order to ensure uniformity of display screens of an ultra-large-sized electronic paper display device.
[0006] In order to solve the above technical problems, this application is implemented as follows:
[0007] In a first aspect, an electronic paper display device is provided, which includes an electronic paper display panel and a display driver module. The display driver module has a plurality of first display driver units and a plurality of second display driver units, and the plurality of first display driver units and the plurality of second display driver units are arranged at intervals from each other. The plurality of first display driver units are driven to be attached to a first display area of the electronic paper display panel, and the electronic paper display panel presents a first picture, and the plurality of second display driver units are driven to be attached to a second display area of the electronic paper display panel, and the electronic paper display panel presents a second picture, and there are partial areas of overlap between adjacent first display areas and second display areas.
[0008] In one embodiment, it further includes a driving module, which is connected to drive multiple first display driving units and multiple second display driving units, wherein when the driving module drives the multiple first display driving units to adhere to the electronic paper display panel, the multiple second display driving units are away from the electronic paper display panel; or when the driving module drives the multiple second display driving units to adhere to the electronic paper display panel, the multiple first display driving units are away from the electronic paper display panel.
[0009] In one embodiment, the driving module further includes a plurality of driving rods and a driving member, wherein the plurality of driving rods are arranged at intervals between the driving member and the electronic paper display panel, each driving rod has a first end and a second end, the first end of each driving rod is connected to the driving member, and the second end of each driving rod is connected to the electronic paper display panel, a plurality of first display driving units and a plurality of second display driving units are movably disposed on the plurality of driving rods, and the driving member drives the plurality of first display driving units and the plurality of second display driving units to move along the driving rods.
[0010] In one embodiment, the spacing distance between the first ends of two adjacent driving rods is greater than or equal to the sum of half the width of the first display driving unit and half the width of the second display driving unit.
[0011] In one embodiment, the spacing distance between the second ends of two adjacent driving rods is smaller than the sum of half the width of the first display driving unit and half the width of the second display driving unit.
[0012] In one embodiment, the display driving module has a plurality of third display driving units, and the first display driving unit, the second display driving unit and the third display driving unit are arranged in sequence.
[0013] In one embodiment, it further includes a driving module, which is connected to drive multiple first display driving units, multiple second display driving units and multiple third display driving units, wherein when the driving module drives the multiple first display driving units to adhere to the electronic paper display panel, the multiple second display driving units and the multiple third display driving units are away from the electronic paper display panel; or when the driving module drives the multiple second display driving units to adhere to the electronic paper display panel, the multiple first display driving units and the multiple third display driving units are away from the electronic paper display panel; or when the driving module drives the multiple third display driving units to adhere to the electronic paper display panel, the multiple first display driving units and the multiple second display driving units are away from the electronic paper display panel.
[0014] In one embodiment, the electronic paper display panel includes a first electrode layer and an electronic paper display module, the first electrode layer is arranged on one side of the electronic paper display module, multiple first display driving units and multiple second display driving units have a second electrode layer, wherein the second electrode layers of the multiple first display driving units are attached to the side of the electronic paper display panel away from the first electrode layer, and the area of the electronic paper display module corresponding to the second electrode layer of the first display driving unit forms a first screen, and the second electrode layers of the multiple second display driving units are attached to the side of the electronic paper display panel away from the first electrode layer, and the area of the electronic paper display module corresponding to the second electrode layer of the second display driving unit forms a second screen.
[0015] In one embodiment, it further includes a signal module, which is electrically connected to multiple first display driving units and multiple second display driving units, wherein the signal module sends a first signal to the multiple first display driving units, the first signal changes the electric field of the second electrode layer of the multiple first display driving units, and the signal module sends a second signal to the multiple second display driving units, the second signal changes the electric field of the second electrode layer of the multiple second display driving units.
[0016] In one embodiment, the electronic paper display panel also includes a first display protective layer, a second display protective layer and a waterproof component. The first display protective layer has a first annular groove on its circumferential side, and the second display protective layer has a second annular groove on its circumferential side. The first annular groove and the second annular groove correspond to each other. The waterproof component is arranged in the first annular groove and the second annular groove. The first display protective layer, the second display protective layer and the waterproof component form an accommodating space. The first electrode layer and the electronic paper display module are configured in the accommodating space.
[0017] In the embodiment of the present application, the entire driving unit of the current electronic paper display device is divided into a plurality of first display driving units and a plurality of second display driving units, and the plurality of first display driving units drive the electronic paper display panel to present the first picture, and the plurality of second display driving units drive the electronic paper display panel to present the second picture, so that the multi-segment display driving unit drives the electronic paper display panel to present the picture. This driving method can make the driving signal of the electronic paper display device realize the normal display of the electronic paper display device of super large size without increasing the driving voltage and driving time. In addition, the adjacent first display area and the second display area of the present application have some areas overlapping each other, so that the blank area of the electronic paper display panel display picture can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0019] Figure 1 is a schematic diagram of the use of the electronic paper display device of the first embodiment of the present application;
[0020] Figure 2 is another schematic diagram of the use of the electronic paper display device according to the first embodiment of the present application;
[0021] Figure 3 is a schematic diagram of an electronic paper display device according to a first embodiment of the present application;
[0022] Figure 4 is a schematic diagram of the electronic paper display panel of the present application;
[0023] Figure 5 It is a schematic diagram of an electronic paper display device according to a second embodiment of the present application.
[0024] The following is a description of the electronic paper display device in conjunction with the accompanying drawings: 1: electronic paper display device; 2: electronic paper display panel; 201: first display area; 202: second display area; 203: third display area; 21: first electrode layer; 22: electronic paper display module; 23: waterproof component; 24: first display protection layer; 241: first annular groove; 25: second display protection layer; 251: second annular groove; 26: accommodating space; 3: display driving module; 31: first display driving unit; 311: second electrode layer; 32: second display driving unit; 33: third display driving unit; 4: driving module; 41: driving rod; 42: driving component; 5: signal module. DETAILED DESCRIPTION
[0025] 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 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.
[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0027] In addition, the terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit this application. They are merely used to distinguish components or operations described with the same technical terms.
[0028] See also Figures 1 to 3 , Figure 1 is a schematic diagram of the use of the electronic paper display device of the first embodiment of the present application, Figure 2 Another schematic diagram is used with Figure 3 is a schematic diagram of an electronic paper display device. As shown in the figure, the electronic paper display device 1 of this embodiment is suitable for outdoor super-large-sized electronic paper advertising billboards. In this embodiment, the electronic paper display device 1 includes an electronic paper display panel 2 and a display driver module 3. The display driver module 3 has a plurality of first display driver units 31 and a plurality of second display driver units 32. The plurality of first display driver units 31 and the plurality of second display driver units 32 are arranged at intervals from each other. In other words, there is a second display driver unit 32 between two adjacent first display driver units 31, and there is a first display driver unit 31 between two adjacent second display driver units 32. The plurality of first display driver units 31 are driven to fit the first display area 201 of the electronic paper display panel 2, and the electronic paper display panel 2 presents a first picture. The plurality of second display driver units 32 are driven to fit the second display area 202 of the electronic paper display panel 2, and the electronic paper display panel 2 presents a second picture, and some areas between the adjacent first display areas 201 and the second display areas 202 overlap each other.
[0029] The electronic paper display device 1 of this embodiment divides the current entire surface driving unit into multiple first display driving units 31 and multiple second display driving units 32, and allows the multiple first display driving units 31 to drive the electronic paper display panel 2 to present a first picture, and the multiple second display driving units 32 to drive the electronic paper display panel 2 to present a second picture, so that two sections (multiple first display driving units 31 and multiple second display driving units 32) drive the electronic paper display panel 2 to present a picture. This driving method allows the driving signal of the electronic paper display device 1 to achieve a picture display of an ultra-large size electronic paper display device 1 without increasing the driving voltage and driving time. The adjacent first display area 201 and second display area 202 of the electronic paper display panel 2 of the present embodiment partially overlap each other, so as to avoid the problem that the first display driving unit 31 and the second display driving unit 32 are arranged side by side in a normal driving picture, and there may be a large gap between the first display driving unit 31 and the second display driving unit 32 due to insufficient arrangement density, or the voltage of the display driving unit close to the side is not enough to drive the picture display, resulting in a blank area between the first display driving unit 31 and the second display driving unit 32 that has not been driven.
[0030] See also Figure 1As shown, in this embodiment, the electronic paper display device 1 further includes a driving module 4. The driving module 4 is connected to drive multiple first display driving units 31 and multiple second display driving units 32. When the driving module 4 drives multiple first display driving units 31 to fit the electronic paper display panel 2, the multiple second display driving units 32 are away from the electronic paper display panel 2. At this time, the multiple first display driving units 31 drive the electronic paper display panel 2 to present the first picture, and the multiple second display driving units 32 stop driving the electronic paper display panel 2. Or when the driving module 4 drives multiple second display driving units 32 to fit the electronic paper display panel 2, the multiple first display driving units 31 are away from the electronic paper display panel 2. At this time, the multiple second display driving units 32 drive the electronic paper display panel 2 to present the second picture, and the multiple first display driving units 31 stop driving the electronic paper display panel 2. In this way, the multiple first display driving units 31 and the multiple second display driving units 32 are respectively driven to individually drive the electronic paper display panel 2 to present the picture, so as to realize the segmented driving of the electronic paper display panel 2.
[0031] As mentioned above, the driving module 4 further includes a plurality of driving rods 41 and a driving member 42. The plurality of driving rods 41 are arranged at intervals between the driving member 42 and the electronic paper display panel 2. Each driving rod 41 has a first end and a second end. The first end of each driving rod 41 is connected to the driving member 42. The second end of each driving rod 41 is connected to the electronic paper display panel 2. The second end of each driving rod 41 is closer to the center position of the electronic paper display panel 2 than the first end. In other words, each driving rod 41 is tilted toward the center position of the electronic paper display panel 2. A plurality of first display driving units 31 and a plurality of second display driving units 32 are movably arranged on the plurality of driving rods 41, respectively. The driving member 42 drives the plurality of first display driving units 31 and the plurality of second display driving units 32 to move along the driving rod 41.
[0032] In this embodiment, the driving rod 41 may use a roller screw, and the driving member 42 may use a driving motor. The driving rod 41 is located at the center of the corresponding first display driving unit 31 or the second display driving unit 32. The spacing distance between the first ends of two adjacent driving rods 41 is greater than or equal to the sum of half the width of the first display driving unit 31 and half the width of the second display driving unit 32. When the first display driving unit 31 alternates with the second display driving unit 32 to drive the display in conjunction with the electronic paper display panel 2, the adjacent first display driving unit 31 and the second display driving unit 32 can pass smoothly when they move alternately on the driving rod 41, thereby avoiding collision / interference between the first display driving unit 31 and the second display driving unit 32 when they move along the driving rod 41. The spacing distance between the second ends of two adjacent driving rods 41 is less than the sum of half the width of the first display driving unit 31 and half the width of the second display driving unit 32, thereby avoiding the appearance of a blank area that has not been driven when the second display driving unit 32 and the first display driving unit 31 drive the electronic paper display panel 2 to present a picture.
[0033] Please also see Figure 4 , which is a schematic diagram of the electronic paper display panel of the present application. As shown in the figure, in this embodiment, the electronic paper display panel 2 includes a first electrode layer 21 and an electronic paper display module 22. The first electrode layer 21 is arranged on one side of the electronic paper display module 22. Multiple first display driving units 31 and multiple second display driving units 32 have a second electrode layer 311. Among them, the second electrode layer 311 of multiple first display driving units 31 is attached to the side of the electronic paper display panel 2 away from the first electrode layer 21. At this time, the second electrode layer 311 of multiple first display driving units 31 and the first electrode layer 21 are respectively attached to both sides of the electronic paper display panel 2, and an electric field is formed between the second electrode layer 311 of multiple first display driving units 31 and the first electrode layer 21. The electric field drives the microcapsules in the corresponding area of the electronic paper display module 22 to move, so that the area of the electronic paper display module 22 corresponding to the second electrode layer 311 of the first display driving unit 31 forms a first picture. The second electrode layer 311 of the multiple second display driving units 32 is adhered to the side of the electronic paper display panel 2 away from the first electrode layer 21. At this time, the second electrode layer 311 of the multiple second display driving units 32 and the first electrode layer 21 are respectively adhered to the two sides of the electronic paper display panel 2, and another electric field is formed between the second electrode layer 311 of the multiple second display driving units 32 and the first electrode layer 21. The electric field drives the microcapsules in the corresponding area of the electronic paper display module 22 to move, so that the area of the electronic paper display module 22 corresponding to the second electrode layer 311 of the second display driving unit 32 forms a second picture.
[0034] As mentioned above, the electronic paper display device 1 further includes a signal module 5. The signal module 5 is electrically connected to the plurality of first display driving units 31 and the plurality of second display driving units 32. The signal module 5 sends a first signal to the plurality of first display driving units 31, and the first signal changes the electric field of the second electrode layer 311 of the plurality of first display driving units 31. The signal module 5 sends a second signal to the plurality of second display driving units 32, and the second signal changes the electric field of the second electrode layer 311 of the plurality of second display driving units 32.
[0035] Please also read Figure 4 The electronic paper display panel 2 of this embodiment further includes a waterproof member 23, a first display protection layer 24 and a second display protection layer 25. The first display protection layer 24 has a first annular groove 241 on its circumference. The second display protection layer 25 has a second annular groove 251 on its circumference. The first annular groove 241 and the second annular groove 251 correspond to each other. The waterproof member 23 is disposed in the first annular groove 241 and the second annular groove 251. The first annular groove 241 and the second annular groove 251 are chamfered structures, and the waterproof member 23 is located in the chamfered structure. The first display protection layer 24, the second display protection layer 25 and the waterproof member 23 form a housing space 26, and the first electrode layer 21 and the electronic paper display module 22 are disposed in the housing space 26. In this embodiment, by adding the first annular groove 241 and the second annular groove 251 to the first display protection layer 24 and the second display protection layer 25, it is beneficial for the waterproof member 23 to be fixed between the first display protection layer 24 and the second display protection layer 25, thereby improving the bonding strength and waterproof effect of the waterproof member 23.
[0036] See also Figure 5 , which is a schematic diagram of an electronic paper display device of the second embodiment of the present application; as shown in the figure, the difference between this embodiment and the first embodiment lies in the structure of the display driving module 3. The display driving module 3 of this embodiment also has a plurality of third display driving units 33. In this embodiment, the first display driving unit 31, the second display driving unit 32 and the third display driving unit 33 are arranged in sequence. That is to say, the electronic paper display device 1 of this embodiment further divides the current whole-surface driving unit into a plurality of first display driving units 31, a plurality of second display driving units 32 and a plurality of third display driving units 33, and allows the plurality of first display driving units 31 to drive the first display area 201 of the electronic paper display panel 2 to present the first picture, the plurality of second display driving units 32 to drive the second display area 202 of the electronic paper display panel 2 to present the second picture, and the plurality of third display driving units 33 to drive the third display area 203 of the electronic paper display panel 2 to present the third picture, so as to realize the multi-segment driving of the electronic paper display panel 2 to present the picture.
[0037] Furthermore, the driving module 4 of this embodiment is connected to drive multiple first display driving units 31, multiple second display driving units 32 and multiple third display driving units 33. When the driving module 4 drives multiple first display driving units 31 to fit the electronic paper display panel 2, multiple second display driving units 32 and multiple third display driving units 33 are away from the electronic paper display panel 2. At this time, multiple first display driving units 31 drive the electronic paper display panel 2 to present a first picture, and multiple second display driving units 32 and multiple third display driving units 33 stop driving the electronic paper display panel 2. Or when the driving module 4 drives multiple second display driving units 32 to fit the electronic paper display panel 2, multiple first display driving units 31 and multiple third display driving units 33 are away from the electronic paper display panel 2. At this time, multiple second display driving units 32 drive the electronic paper display panel 2 to present a second picture, and multiple first display driving units 31 and multiple third display driving units 33 stop driving the electronic paper display panel 2. Or when the driving module 4 drives the plurality of third display driving units 33 to be attached to the electronic paper display panel 2, the plurality of first display driving units 31 and the plurality of second display driving units 32 are away from the electronic paper display panel 2. At this time, the plurality of third display driving units 33 drive the electronic paper display panel 2 to present the third picture, and the plurality of first display driving units 31 and the plurality of second display driving units 32 stop driving the electronic paper display panel 2. In this embodiment, the first display area 201 and the second display area 202 adjacent to both sides of the third display area 203 partially overlap each other, so that blank areas can be avoided in the display picture of the electronic paper display panel 2.
[0038] In summary, the present application provides an electronic paper display device, which divides the entire driving unit of the current electronic paper display device into multiple first display driving units and multiple second display driving units, and allows multiple first display driving units to drive the electronic paper display panel to present a first picture, and multiple second display driving units to drive the electronic paper display panel to present a second picture, so that multiple display driving units drive the electronic paper display panel to present a picture. This driving method can make the driving signal of the electronic paper display device realize the normal display of the super-large-sized electronic paper display device without increasing the driving voltage and driving time. In addition, the adjacent first display area and the second display area of the present application have some areas overlapping each other, so that blank areas in the display screen of the electronic paper display panel can be avoided.
[0039] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.
[0040] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. An electronic paper display device, characterized in that: include: Electronic paper display panels; A display driving module comprises a plurality of first display driving units and a plurality of second display driving units, wherein the plurality of first display driving units and the plurality of second display driving units are arranged at intervals from each other; Among them, multiple first display driving units are driven to adhere to the first display area of the electronic paper display panel, and the electronic paper display panel presents a first picture. Multiple second display driving units are driven to adhere to the second display area of the electronic paper display panel, and the electronic paper display panel presents a second picture. There are partial areas of overlap between adjacent first display areas and second display areas.
2. The electronic paper display device according to claim 1, characterized in that: It further includes a driving module, which is connected to drive multiple first display driving units and multiple second display driving units, wherein when the driving module drives multiple first display driving units to adhere to the electronic paper display panel, multiple second display driving units are away from the electronic paper display panel; or when the driving module drives multiple second display driving units to adhere to the electronic paper display panel, multiple first display driving units are away from the electronic paper display panel.
3. The electronic paper display device according to claim 2, characterized in that: The driving module further includes a plurality of driving rods and a driving member, wherein the plurality of driving rods are arranged at intervals between the driving member and the electronic paper display panel, each of the driving rods has a first end and a second end, the first end of each driving rod is connected to the driving member, and the second end of each driving rod is connected to the electronic paper display panel, a plurality of the first display driving units and a plurality of the second display driving units are movably disposed on the plurality of driving rods, and the driving member drives the plurality of the first display driving units and the plurality of the second display driving units to move along the driving rods.
4. The electronic paper display device according to claim 3, characterized in that: The spacing distance between the first ends of two adjacent driving rods is greater than or equal to the sum of half the width of the first display driving unit and half the width of the second display driving unit.
5. The electronic paper display device according to claim 3, characterized in that: The spacing distance between the second ends of two adjacent driving rods is smaller than the sum of half the width of the first display driving unit and half the width of the second display driving unit.
6. The electronic paper display device according to claim 1, characterized in that: The display driving module has a plurality of third display driving units, and the first display driving unit, the second display driving unit and the third display driving unit are arranged in sequence.
7. The electronic paper display device according to claim 6, characterized in that: It further includes a driving module, which is connected to drive multiple first display driving units, multiple second display driving units and multiple third display driving units, wherein when the driving module drives multiple first display driving units to adhere to the electronic paper display panel, multiple second display driving units and multiple third display driving units are away from the electronic paper display panel; or when the driving module drives multiple second display driving units to adhere to the electronic paper display panel, multiple first display driving units and multiple third display driving units are away from the electronic paper display panel; or when the driving module drives multiple third display driving units to adhere to the electronic paper display panel, multiple first display driving units and multiple second display driving units are away from the electronic paper display panel.
8. The electronic paper display device according to claim 1, characterized in that: The electronic paper display panel includes a first electrode layer and an electronic paper display module, wherein the first electrode layer is arranged on one side of the electronic paper display module, and multiple first display driving units and multiple second display driving units have a second electrode layer, wherein the second electrode layer of multiple first display driving units is attached to a side of the electronic paper display panel away from the first electrode layer, and an area of the electronic paper display module corresponding to the second electrode layer of the first display driving unit forms the first screen, and the second electrode layer of multiple second display driving units is attached to a side of the electronic paper display panel away from the first electrode layer, and an area of the electronic paper display module corresponding to the second electrode layer of the second display driving unit forms the second screen.
9. The electronic paper display device according to claim 8, characterized in that: It further includes a signal module, which is electrically connected to multiple first display driving units and multiple second display driving units, wherein the signal module sends a first signal to multiple first display driving units, and the first signal changes the electric field of the second electrode layer of the multiple first display driving units; the signal module sends a second signal to multiple second display driving units, and the second signal changes the electric field of the second electrode layer of the multiple second display driving units.
10. The electronic paper display device according to claim 8, characterized in that: The electronic paper display panel also includes a first display protection layer, a second display protection layer and a waterproof component. The first display protection layer has a first annular groove on its circumferential side, and the second display protection layer has a second annular groove on its circumferential side. The first annular groove and the second annular groove correspond to each other. The waterproof component is arranged in the first annular groove and the second annular groove. The first display protection layer, the second display protection layer and the waterproof component form a accommodating space. The first electrode layer and the electronic paper display module are configured in the accommodating space.