Array substrate, flexible color electronic paper display panel and control method

Abstract

The invention discloses an array substrate, a flexible color electronic paper display panel and a control method, and mainly relates to the technical field of display, a pixel electrode layer comprises a plurality of pixel electrodes, the pixel electrodes and pixel unit areas are in one-to-one correspondence, a first sub-pixel electrode is located in a first sub-pixel unit area, and a second sub-pixel electrode is located in a second sub-pixel unit area. The second sub-pixel electrode is located in the second sub-pixel unit area, and the second sub-pixel electrode is located on the periphery of the first sub-pixel electrode; when the flexible color electronic paper display panel is in a bending state, the second sub-pixel electrode can be used for controlling the electrophoretic reflection layer in the second sub-pixel unit area to absorb light; when the flexible color electronic paper display panel is in an unbent state, the voltage of the first sub-pixel electrode and the voltage of the second sub-pixel electrode are the same, and the electric fields in the first sub-pixel unit area and the second sub-pixel unit area are the same. Through the design, the problems of color cast and color mixing of the flexible color electronic paper display panel in a bending state can be avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an array substrate, a flexible color electronic paper display panel and a control method. Background Art

[0002] Electronic paper is an ultra-thin, ultra-light display that is similar to natural paper. It has high resolution and wide viewing angle and is usually used in electronic display devices. With the advancement of technology, the technology of flexible color electronic paper display panels has made breakthroughs and will be widely used in more fields in the future.

[0003] However, when the existing flexible color electronic paper display panel is in a bent state, problems such as display color deviation and color mixing may occur due to misalignment of the upper and lower substrates. Summary of the invention

[0004] The purpose of the present application is to provide an array substrate, a flexible color electronic paper display panel and a control method, which can avoid the problems of color deviation and color mixing in the flexible color electronic paper display panel when it is in a bent state.

[0005] The present application discloses an array substrate for use in a flexible color electronic paper display panel, wherein the flexible color electronic paper display panel comprises an electrophoretic reflective layer, the array substrate comprises an array substrate, and an active switch layer and a pixel electrode layer sequentially arranged on the array substrate, and the array substrate further comprises a plurality of pixel unit regions; The pixel electrode layer includes a plurality of pixel electrodes, the pixel electrodes correspond to the pixel unit regions one by one, the pixel electrodes include a first sub-pixel electrode and a second sub-pixel electrode, the pixel unit region includes a first sub-pixel unit region and a second sub-pixel unit region, the first sub-pixel electrode is located in the first sub-pixel unit region, the second sub-pixel electrode is located in the second sub-pixel unit region, and the second sub-pixel electrode is located at the periphery of the first sub-pixel electrode; When the flexible color electronic paper display panel is in a bent state, the second sub-pixel electrode can be used to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light; when the flexible color electronic paper display panel is in an unbent state, the voltages of the first sub-pixel electrode and the second sub-pixel electrode are the same, and the electric fields in the first sub-pixel unit area and the second sub-pixel unit area are the same.

[0006] Optionally, the array substrate includes a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area includes a first area and a second area, and the first area and the second area are respectively located on both sides of a center line; In the pixel unit area in the first area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode close to the second area, and in the pixel unit area in the second area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode close to the first area.

[0007] Optionally, the array substrate includes a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area includes a first area and a second area, and the first area and the second area are respectively located on both sides of a center line; In the pixel unit area in the first area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode away from the second area, and in the pixel unit area in the second area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode away from the first area.

[0008] Optionally, the array substrate includes a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area includes a first area and a second area, and the first area and the second area are respectively located on both sides of a center line; The number of second sub-pixel electrodes in each pixel unit area includes two, and the two second sub-pixel electrodes in each pixel unit area are connected. In the pixel unit area in the first area, the two second sub-pixel electrodes are respectively located on both sides of the first sub-pixel electrode close to and away from the second area, and in the pixel unit area in the second area, the two second sub-pixel electrodes are respectively located on both sides of the first sub-pixel electrode close to and away from the first area.

[0009] Optionally, a direction extending along the center line toward the first region is defined as a first direction, and a direction extending along the center line toward the second region is defined as a second direction; In the pixel unit area in the first area, along the first direction, the width of the second sub-pixel electrode gradually increases, and in the pixel unit area in the second area, along the second direction, the width of the second sub-pixel electrode gradually increases.

[0010] Optionally, the active switch layer includes a first active switch, a second active switch, a first data line, a second data line and a scan line, the first active switch, the second active switch, the first data line, the second data line and the scan line are all arranged on the array substrate, the first data line and the scan line are arranged in a crisscross pattern, and define the pixel unit area; The first active switch connects the first data line and the first sub-pixel electrode, the second active switch connects the second data line and the second sub-pixel electrode, and the scan line controls the opening of the first active switch and the second active switch simultaneously.

[0011] Optionally, the active switch layer includes a first active switch, a second active switch, a first data line, a second data line, a first scan line, and a second scan line, the first active switch, the second active switch, the first data line, the second data line, the first scan line, and the second scan line are all arranged on the array substrate, the first data line and the first scan line are arranged in a crisscross pattern, and define the pixel unit area; The first active switch connects the first data line and the first sub-pixel electrode, the second active switch connects the second data line and the second sub-pixel electrode, the first scan line controls the opening of the first active switch, and the second scan line controls the opening of the second active switch.

[0012] The present application also discloses a flexible color electronic paper display panel, which includes a color filter substrate, an electrophoretic reflective layer and an array substrate, wherein the electrophoretic reflective layer is arranged between the color filter substrate and the array substrate.

[0013] The present application also discloses a control method for a flexible color electronic paper display panel, which is used in a flexible color electronic paper display panel. The control method for the flexible color electronic paper display panel includes the following steps: Detect whether the flexible color electronic paper display panel is in a bent state; When the flexible color electronic paper display panel is in a bent state, controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light; When the flexible color electronic paper display panel is not in a bent state, the electric fields in the first sub-pixel unit and the second sub-pixel unit are controlled to be the same.

[0014] Optionally, when the flexible color electronic paper display panel is in a bent state, the step of controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light further includes: When the flexible color electronic paper display panel is in a bent state, positive electricity is input to the second sub-pixel electrode to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light.

[0015] Compared with the existing flexible color electronic paper display panel solution, the present application divides the pixel electrode into a first sub-pixel electrode and a second sub-pixel electrode, and the second sub-pixel electrode is located at the periphery of the first sub-pixel electrode. In this way, when the flexible color electronic paper display panel is in a bent state, although the color resistance on the color filter substrate and the pixel electrode on the array substrate are offset, the offset color resistance will fall on the second sub-pixel electrode in the adjacent pixel unit area. At this time, the second sub-pixel electrode is used to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light, which can avoid the problem of color deviation and color mixing in the flexible color electronic paper display panel; and when the flexible color electronic paper display panel is in an unbent state, the voltages of the first sub-pixel electrode and the second sub-pixel electrode are the same, and the electric fields in the first sub-pixel unit area and the second sub-pixel unit area are the same, which will not cause the color electronic paper display panel to have a reduced brightness when it is not bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic diagram of a first flexible color electronic paper display panel according to an embodiment of the present application; Figure 2 is a schematic diagram of a second flexible color electronic paper display panel according to an embodiment of the present application; Figure 3 This is a schematic diagram of an array substrate in an unbent state according to the first embodiment of the present application; Figure 4 This is a schematic diagram of an array substrate in a bent state according to the first embodiment of the present application; Figure 5 is a schematic diagram of an existing flexible color electronic paper display panel; Figure 6 is a schematic diagram of a bending state of an existing flexible color electronic paper display panel; Figure 7 is a plan view of an array substrate according to the first embodiment of the present application; Figure 8 is a schematic diagram of a first array substrate according to a first embodiment of the present application, including a first area and a second area; Fig. 9This is a schematic diagram of pixel electrodes in a first area of ​​a first array substrate in a bent state according to a first embodiment of the present application; Fig.10 is a schematic diagram of pixel electrodes in the second area of ​​the first array substrate in a bent state according to the first embodiment of the present application; Fig.11 is a schematic diagram of pixel electrodes in the first area of ​​the second array substrate of the first embodiment of the present application; Fig.12 is a schematic diagram of pixel electrodes in the second area of ​​the second array substrate of the first embodiment of the present application; Fig.13 is a schematic diagram of pixel electrodes of a third array substrate of the first embodiment of the present application; Fig.14 is a schematic diagram of a control method of a flexible color electronic paper display panel according to an embodiment of the present application; Fig.15 It is a schematic diagram of an array substrate according to the second embodiment of the present application.

[0017] Among them, 10, flexible color electronic paper display panel; 100, color film substrate; 110, color film substrate; 120, color filter layer; 121, color resistance; 200, common electrode; 210, protective layer; 300, electrophoretic reflective layer; 310, microcapsule; 311, electrophoretic particles; 312, colloidal suspension; 313, electrophoretic ink; 314, base layer; 315, microcup; 316, retaining wall; 400, array substrate; 410, center line; 421, first direction; 422, second direction; 430, display area; 431, first area; 432, Middle area; 433, second area; 440, non-display area; 450, pixel unit area; 451, first sub-pixel unit area; 452, second sub-pixel unit area; 610, array substrate; 620, active switch layer; 621, first active switch; 622, second active switch; 631, first data line; 632, second data line; 640, scan line; 641, first scan line; 642, second scan line; 700, pixel electrode layer; 710, pixel electrode; 711, first sub-pixel electrode; 712, second sub-pixel electrode. DETAILED DESCRIPTION

[0018] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0019] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0020] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0021] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0023] Figure 1 is a schematic diagram of a first flexible color electronic paper display panel according to an embodiment of the present application, Figure 2 is a schematic diagram of a second flexible color electronic paper display panel according to an embodiment of the present application, combined with Figure 1 and Figure 2 As shown, the present application discloses a flexible color electronic paper display panel 10, which includes a color filter substrate 100, an electrophoretic reflective layer 300 and an array substrate 400, wherein the electrophoretic reflective layer 300 is arranged between the color filter substrate 100 and the array substrate 400.

[0024] The color filter substrate 100 includes a color filter substrate 110 and a color filter layer 120, and the color filter layer 120 is arranged on the color filter substrate 110. The color filter layer 120 includes a plurality of color resists 121, each of the color resists 121 corresponds to the pixel unit area 450 one by one, and the orthographic projection of the color resist 121 coincides with the orthographic projection of the pixel electrode 710, exemplarily including a red color resist 121, a green color resist 121 and a blue color resist 121.

[0025] The flexible color electronic paper display panel 10 also includes a common electrode 200 and a protective layer 210. The protective layer 210 is located on the side of the color filter layer 120 away from the color filter substrate 110. The common electrode 200 is located between the color filter substrate 100 and the electrophoretic reflective layer 300. The pixel electrode 710 on the array substrate 400 and the common electrode 200 drive the electrophoretic reflective layer 300 to absorb or reflect light.

[0026] The electrophoretic reflective layer 300 may be a microcapsule 310 type electrophoretic reflective layer 300 or a microcup type electrophoretic reflective layer 300 .

[0027] See also Figure 1 Exemplarily, when the electrophoretic reflective layer 300 is a microcapsule type electrophoretic reflective layer 300, the electrophoretic reflective layer 300 includes a plurality of microcapsules 310, each of the microcapsules 310 is filled with electrophoretic particles 311 and a colloidal suspension 312, the electrophoretic particles 311 include black electrophoretic particles 311 and white electrophoretic particles 311, the white electrophoretic particles 311 are negatively charged, the black electrophoretic particles 311 are positively charged, and the colloidal suspension 312 is electrically neutral. When negative electricity is applied to the pixel electrode 710, the black electrophoretic particles 311 move downward and the white electrophoretic particles 311 move upward under the action of the electric field force, thereby displaying a white state when viewed from above. When positive electricity is applied to the pixel electrode 710, the black electrophoretic particles 311 move upward and the white electrophoretic particles 311 move downward under the action of the electric field force, thereby displaying a black state when viewed from above. Of course, the microcapsule 310 may also be filled with colored electrophoretic particles 311 , such as red electrophoretic particles 311 , green electrophoretic particles 311 , and blue electrophoretic particles 311 .

[0028] See also Figure 2 Exemplarily, when the electrophoretic reflective layer 300 is a microcup type electrophoretic reflective layer 300, the electrophoretic reflective layer 300 includes a base layer 314, a plurality of microcups 315 are arranged on the base layer 314, the microcups 315 correspond to the pixel unit areas 450 one by one, the microcups 315 are filled with electrophoretic particles 311 and colloidal suspension 312, or the microcups 315 are filled with electrophoretic ink 313 and colloidal suspension 312.

[0029] It should be noted that when the electrophoretic reflective layer 300 is a microcup type electrophoretic reflective layer 300, a retaining wall 316 is provided between the first sub-pixel unit area 451 and the second sub-pixel unit area 452. The retaining wall 316 divides the microcup 315 into two independent sub-microcups 315, so as to avoid interference of the first sub-pixel unit area 451 with the control of the second sub-pixel unit area 452.

[0030] The present application also discloses an array substrate 400, which can be used in the flexible color electronic paper display panel 10 described above. For the array substrate 400, the present application provides the following design, which is specifically introduced through several embodiments: Embodiment 1: Figure 3 is a schematic diagram of an array substrate in an unbent state according to the first embodiment of the present application, Figure 4 is a schematic diagram of an array substrate in a bent state according to the first embodiment of the present application, such as Figure 3-Figure 4 As shown, the present application discloses an array substrate 400 for use in a flexible color electronic paper display panel 10, wherein the flexible color electronic paper display panel 10 includes an electrophoretic reflective layer 300, the array substrate 400 includes an array substrate 610, and an active switching layer 620 and a pixel electrode layer 700 sequentially arranged on the array substrate 610, and the array substrate 400 also includes a plurality of pixel unit areas 450.

[0031] The pixel electrode layer 700 includes a plurality of pixel electrodes 710, and the pixel electrodes 710 correspond one to one with the pixel unit area 450. The pixel electrode 710 includes a first sub-pixel electrode 711 and a second sub-pixel electrode 712. The pixel unit area 450 includes a first sub-pixel unit area 451 and a second sub-pixel unit area 452. The first sub-pixel electrode 711 is located in the first sub-pixel unit area 451, and the second sub-pixel electrode 712 is located in the second sub-pixel unit area 452. The second sub-pixel electrode 712 is located at the periphery of the first sub-pixel electrode 711.

[0032] When the flexible color electronic paper display panel 10 is in a bent state, the second sub-pixel electrode 712 can be used to control the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 to absorb light; when the flexible color electronic paper display panel 10 is in an unbent state, the voltages of the first sub-pixel electrode 711 and the second sub-pixel electrode 712 are the same, and the electric fields in the first sub-pixel unit area 451 and the second sub-pixel unit area 452 are the same.

[0033] In simple terms, when the flexible color electronic paper display panel 10 is in a bent state, the second sub-pixel electrode 712 can be used to control the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 to absorb light, and when the flexible color electronic paper display panel 10 is in an unbent state, the first sub-pixel electrode 711 and the second sub-pixel electrode 712 jointly participate in the display of the picture.

[0034] Figure 5 is a schematic diagram of an existing flexible color electronic paper display panel. Figure 6 is a schematic diagram of a bending state of an existing flexible color electronic paper display panel, combined with Figure 5-Figure 6 As shown, taking the flexible color electronic paper display panel 10 with both sides upward and the middle bent downward as an example, at this time, the color film substrate 100 will generate stress to slide left and right on the left and right sides relative to the array substrate 400 with the center as the base point, resulting in the flexible color electronic paper display panel 10 having a deviation between the color resist 121 on the color film substrate 100 and the pixel electrode 710 on the array substrate 400 at a position away from the center line 410, resulting in the color resist 121 in one pixel unit area 450 shifting to another pixel unit area 450, thereby causing color deviation and color mixing problems.

[0035] Compared with the existing flexible color electronic paper display panel solution, the present application divides the pixel electrode 710 into a first sub-pixel electrode 711 and a second sub-pixel electrode 712, and the second sub-pixel electrode 712 is located at the periphery of the first sub-pixel electrode 711. In this way, when the flexible color electronic paper display panel 10 is in a bent state, although the color resist 121 on the color filter substrate 100 is offset from the pixel electrode 710 on the array substrate 400, the offset color resist 121 will fall on the second sub-pixel electrode 712 of the adjacent pixel unit area 450. At this time, the second sub-pixel electrode 712 can be used to control the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 to absorb light, thereby avoiding the problems of color deviation and color mixing in the flexible color electronic paper display panel 10.

[0036] Moreover, when the flexible color electronic paper display panel 10 is in an unbent state, the voltages of the first sub-pixel electrode 711 and the second sub-pixel electrode 712 are the same, and the electric fields in the first sub-pixel unit area 451 and the second sub-pixel unit area 452 are the same. In simple terms, when the flexible color electronic paper display panel 10 is not bent, the second sub-pixel electrode 712 and the first sub-pixel electrode 711 are displayed together, which will not cause the problem of reduced brightness of the flexible color electronic paper display panel 10 when it is not bent.

[0037] The width of the second sub-pixel electrode 712 is greater than or equal to the offset of the color resist 121 when the flexible color electronic paper display panel 10 is in a bent state, and the area of ​​the first sub-pixel electrode 711 is greater than the area of ​​the second sub-pixel electrode 712. This can avoid the problem of too low brightness of the flexible color electronic paper display panel 10 due to the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 being controlled to absorb light when the flexible color electronic paper display panel 10 is in a bent state.

[0038] Figure 7 is a plan view of an array substrate according to the first embodiment of the present application, Figure 7 As shown, the first sub-pixel electrode 711 and the second sub-pixel electrode 712 in each pixel unit area of ​​the present embodiment are controlled by a scan line 640. Specifically, the active switch layer 620 includes a first active switch 621, a second active switch 622, a first data line 631, a second data line 632 and a scan line 640. The first active switch 621, the second active switch 622, the first data line 631, the second data line 632 and the scan line 640 are all arranged on the array substrate 610. The first data line 631 and the scan line 640 are arranged in a criss-cross pattern and define the pixel unit area 450.

[0039] The first active switch 621 connects the first data line 631 and the first sub-pixel electrode 711 , the second active switch 622 connects the second data line 632 and the second sub-pixel electrode 712 , and the scan line 640 controls the opening of the first active switch 621 and the second active switch 622 at the same time.

[0040] The first active switch 621 and the second active switch 622 may be single-gate type active switches or dual-gate type active switches.

[0041] In this embodiment, by simultaneously opening the first active switch 621 and the second active switch 622 on the scan line 640, the first sub-pixel electrode 711 and the second sub-pixel electrode 712 can be input with the same voltage or with different voltages, thereby reducing the number of metal wires on the array substrate 400, reducing the design difficulty of the array substrate 400, and reducing the degree of mutual interference between different metal wires.

[0042] Figure 8 is a schematic diagram of a first array substrate according to a first embodiment of the present application, including a first area and a second area, Fig. 9 is a schematic diagram of a pixel electrode in a first area of ​​a first array substrate in a bent state according to a first embodiment of the present application, Fig.10is a schematic diagram of the pixel electrode in the second area of ​​the first array substrate in the first embodiment of the present application in a bent state, such as Figure 8-Figure 10 As shown, when the flexible color electronic paper display panel 10 is bent upward on both sides and downward in the middle, the color resistance 121 in the pixel unit area 450 on the left side of the flexible color electronic paper display panel 10 will be offset to the left, and the color resistance 121 in the pixel unit area 450 on the right side of the flexible color electronic paper display panel 10 will be offset to the right. Therefore, the present application is specifically designed for the flexible color electronic paper display panel 10 that is bent upward on both sides and downward in the middle.

[0043] Specifically, the array substrate 400 includes a display area 430 and a non-display area 440, the non-display area 440 surrounds the display area 430, and the pixel unit area 450 is located in the display area 430; the display area 430 includes a first area 431 and a second area 433, and the first area 431 and the second area 433 are respectively located on both sides of the center line 410.

[0044] In the pixel unit area 450 in the first area 431, the second sub-pixel electrode 712 is located on a side of the first sub-pixel electrode 711 close to the second area 433, and in the pixel unit area 450 in the second area 433, the second sub-pixel electrode 712 is located on a side of the first sub-pixel electrode 711 close to the first area 431.

[0045] It is defined that when both sides of the flexible color electronic paper display panel 10 are bent toward the middle, the middle position is the center line 410 .

[0046] While solving the color deviation and color mixing problems of the flexible color electronic paper display panel 10 , there is no need to provide the second sub-pixel electrode 712 on both sides of the first sub-pixel electrode 711 , and there is no need to design connecting lines, which can simplify the structure of the array substrate 400 .

[0047] In addition, the display area 430 also includes a middle area 432, which is located between the first area 431 and the second area 433. In the pixel unit area 450 in the middle area 432, since the color resistance 121 of the middle area 432 has a small offset, the second sub-pixel electrode 712 may not be set in the middle area 432.

[0048] Of course, considering the display uniformity of the entire flexible color electronic paper display panel 10, a second sub-pixel electrode 712 can also be set in the middle area 432, and the second sub-pixel electrode 712 can be located on the left side of the first sub-pixel electrode 711, or on the right side of the first sub-pixel electrode 711. Of course, the second sub-pixel electrode 712 can also be set on both the left and right sides of the first sub-pixel electrode 711.

[0049] A direction extending from the center line 410 toward the first region 431 is defined as a first direction 421 , and a direction extending from the center line 410 toward the second region 433 is defined as a second direction 422 .

[0050] Since the offset of the color resist 121 is greater as the position is further away from the center line 410, in the present application, in the pixel unit area 450 in the first area 431, along the first direction 421, the width of the second sub-pixel electrode 712 gradually increases, and in the pixel unit area 450 in the second area 433, along the second direction 422, the width of the second sub-pixel electrode 712 gradually increases.

[0051] In this way, the problem of brightness loss in the pixel unit area 450 can be avoided because the offset of the color resist 121 in the pixel unit area 450 close to the center line 410 is smaller than the offset of the color resist 121 in the pixel unit area 450 far from the center line 410. If the maximum offset of the color resist 121 is used as the width of the second sub-pixel electrode 712 close to the center line 410, it will cause the brightness loss in the pixel unit area 450.

[0052] It can also avoid the problem of color shift or color mixing that occurs when a second sub-pixel electrode 712 with the same width as the second sub-pixel electrode 712 in the pixel unit area 450 close to the center line 410 is used, which results in the color resist 121 offset exceeding the area of ​​the second sub-pixel electrode 712, due to the color resist 121 offset in the pixel unit area 450 far from the center line 410 being greater than the color resist 121 offset in the pixel unit area 450 close to the center line 410.

[0053] Fig.11 is a schematic diagram of pixel electrodes in the first area of ​​the second array substrate of the first embodiment of the present application, Fig.12 is a schematic diagram of pixel electrodes in the second area of ​​the second array substrate of the first embodiment of the present application, such as Figure 11-Figure 12As shown, if the flexible color electronic paper display panel 10 is only bent downward on both sides and upward in the middle, the color resist 121 in the pixel unit area 450 on the left side of the flexible color electronic paper display panel 10 will shift to the right, and the color resist 121 in the pixel unit area 450 on the right side of the flexible color electronic paper display panel 10 will shift to the left. Therefore, the present application is specifically designed for the flexible color electronic paper display panel 10 that is bent downward on both sides and upward in the middle.

[0054] Specifically, the array substrate 400 includes a display area 430 and a non-display area 440, the non-display area 440 surrounds the display area 430, and the pixel unit area 450 is located in the display area 430; the display area 430 includes a first area 431 and a second area 433, and the first area 431 and the second area 433 are respectively located on both sides of the center line 410.

[0055] In the pixel unit area 450 in the first area 431, the second sub-pixel electrode 712 is located on a side of the first sub-pixel electrode 711 away from the second area 433, and in the pixel unit area 450 in the second area 433, the second sub-pixel electrode 712 is located on a side of the first sub-pixel electrode 711 away from the first area 431.

[0056] While solving the color deviation and color mixing problems of the flexible color electronic paper display panel 10 , there is no need to provide the second sub-pixel electrode 712 on both sides of the first sub-pixel electrode 711 , and there is no need to design connecting lines, which can simplify the structure of the array substrate 400 .

[0057] Fig.13 is a schematic diagram of pixel electrodes of the third array substrate of the first embodiment of the present application, such as Fig.13 As shown, the array substrate 400 includes a display area 430 and a non-display area 440, the non-display area 440 surrounds the display area 430, and the pixel unit area 450 is located in the display area 430; the display area 430 includes a first area 431 and a second area 433, and the first area 431 and the second area 433 are respectively located on both sides of the center line 410.

[0058] The number of second sub-pixel electrodes 712 in each pixel unit area 450 includes two, and the two second sub-pixel electrodes 712 in each pixel unit area 450 are connected. In the pixel unit area 450 in the first area 431, the two second sub-pixel electrodes 712 are respectively located on both sides of the first sub-pixel electrode 711 close to and away from the second area 433; in the pixel unit area 450 in the second area 433, the two second sub-pixel electrodes 712 are respectively located on both sides of the first sub-pixel electrode 711 close to and away from the first area 431.

[0059] In simple terms, no matter in the pixel unit region 450 in the first region 431 or in the pixel unit region 450 in the second region 433 , the number of the second sub-pixel electrodes 712 is two.

[0060] Exemplarily, in the pixel unit area 450 in the first area 431, one second sub-pixel electrode 712 is located on the side of the first sub-pixel electrode 711 close to the second area 433, and the other second sub-pixel electrode 712 is located on the side of the first sub-pixel electrode 711 away from the second area 433. In this way, no matter whether the flexible color electronic paper display panel 10 is bent forward or backward, the second sub-pixel electrode 712 can cover the offset color resist 121, thereby avoiding the problems of color mixing and color deviation.

[0061] The two second sub-pixel electrodes 712 are directly connected, and may be connected through via holes and connecting lines, so there is no need to provide an additional active switch and data line.

[0062] Fig.14 is a schematic diagram of a control method of a flexible color electronic paper display panel according to an embodiment of the present application, such as Fig.14 As shown, the present application also discloses a control method of a flexible color electronic paper display panel 10, the control method of the flexible color electronic paper display panel 10 is used for the above-mentioned flexible color electronic paper display panel 10, and the steps of the control method of the flexible color electronic paper display panel 10 include: S1: Detect whether the flexible color electronic paper display panel is in a bent state; S2: when the flexible color electronic paper display panel is in a bent state, controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light; S3: when the flexible color electronic paper display panel is not in a bent state, controlling the electric fields in the first sub-pixel unit and the second sub-pixel unit to be the same.

[0063] Among them, detecting whether the flexible color electronic paper display panel 10 is in a bent state can be done by setting a touch electrode in the flexible color electronic paper display panel 10. When the flexible color electronic paper display panel 10 is bent, the dielectric constant of the medium will change, thereby causing a change in the capacitance value. The touch sensing capacitance value of the touch electrode will change. Therefore, it is possible to determine whether the panel is bent by detecting the change in the touch sensing capacitance value.

[0064] Specifically, the first self-capacitance sensing method can be used: in self-capacitance sensing, each touch electrode works independently, and the bending state is determined by measuring the capacitance between the touch electrode and the power ground. When the touch screen is bent, the capacitance value between the touch electrode and the power ground in the bent area will change. By detecting the change in the capacitance value, the degree of bending and the position of the bending can be determined.

[0065] The second mutual capacitance sensing method: Mutual capacitance sensing uses a combination of transmitting electrodes and receiving electrodes to work. When the touch screen is bent, the mutual capacitance between the transmitting electrode and the receiving electrode in the bent area will change. By measuring the amount of charge received on the receiving electrode (proportional to the mutual capacitance), the bending state can be determined.

[0066] By dividing the pixel electrode 710 into a first sub-pixel electrode 711 and a second sub-pixel electrode 712, and the second sub-pixel electrode 712 is located at the periphery of the first sub-pixel electrode 711, when the flexible color electronic paper display panel 10 is in a bent state, although the color resist 121 on the color film substrate 100 is offset from the pixel electrode 710 on the array substrate 400, the offset color resist 121 will fall on the second sub-pixel electrode 712 of the adjacent pixel unit area 450. At this time, the second sub-pixel electrode 712 is used to control the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 to absorb light, thereby avoiding the problem of color deviation and color mixing in the flexible color electronic paper display panel 10.

[0067] Moreover, when the flexible color electronic paper display panel 10 is in an unbent state, the voltages of the first sub-pixel electrode 711 and the second sub-pixel electrode 712 are the same, and the electric fields in the first sub-pixel unit area 451 and the second sub-pixel unit area 452 are the same. In simple terms, when the flexible color electronic paper display panel 10 is not bent, the second sub-pixel electrode 712 is displayed, which will not cause the problem of reduced brightness of the color electronic paper display panel when it is not bent.

[0068] Wherein, S2: when the flexible color electronic paper display panel is in a bent state, the step of controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light further includes: S21: When the flexible color electronic paper display panel is in a bent state, a positive charge is input to the second sub-pixel electrode to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light.

[0069] By inputting positive electricity into the second sub-pixel electrode 712 , the black electrophoretic particles 311 of the electrophoretic reflective layer 300 in the first sub-pixel unit area 451 will move upward, so that the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 absorbs light.

[0070] Since the scan line 640 of this embodiment controls the first active switch 621 and the second active switch 622 at the same time, the first active switch 621 will also be turned on when the positive electricity is input to the second sub-pixel electrode 712. Therefore, it is necessary to input the display voltage to the first sub-pixel electrode 711 while inputting the positive electricity to the second sub-pixel electrode 712, as follows: S21: When the flexible color electronic paper display panel is in a bent state, the step of inputting positive electricity to the second sub-pixel electrode to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light also includes: S211: When the flexible color electronic paper display panel is in a bent state, a positive charge is input to the second sub-pixel electrode, and a display voltage is input to the first sub-pixel electrode, so as to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light.

[0071] In this way, when positive electricity is input to the second sub-pixel electrode 712, it will not cause leakage of the first sub-pixel electrode 711, thereby avoiding the problem of affecting the image display.

[0072] When the flexible color electronic paper display panel 10 is in a bent state, since the second sub-pixel electrode 712 controls the electrophoretic reflective layer 300 in the second pixel unit area 450 to absorb light, the screen brightness of the flexible color electronic paper display panel 10 will be reduced. Therefore, the present application also inputs a display voltage greater than or less than the initial display voltage to the first sub-pixel electrode 711 while inputting positive electricity to the second sub-pixel electrode 712, as follows.

[0073] When the initial display voltage of the first sub-pixel electrode 711 is a positive voltage, the display voltage is less than the initial display voltage; when the initial display voltage of the first sub-pixel electrode 711 is a negative voltage, the display voltage is greater than the initial display voltage.

[0074] Exemplarily, when the flexible color electronic paper display panel 10 is not in a bent state, the voltages of the first sub-pixel electrode 711 and the second sub-display electrode in the current pixel unit area 450 are both initial display voltages, such as +10V.

[0075] When the flexible color electronic paper display panel 10 is in a bent state, a voltage of +15V is input to the voltage of the second sub-display electrode in the current pixel unit area 450, so that the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 absorbs light and displays black, and a display voltage, such as a voltage of +8, is input to the first sub-pixel electrode 711 to increase the brightness of the first sub-pixel unit area 451, thereby balancing the problem of decreased brightness and contrast of the flexible color electronic paper display panel 10 caused by the blackening of the second sub-pixel unit area 452.

[0076] Exemplarily, when the flexible color electronic paper display panel 10 is not in a bent state, the voltages of the first sub-pixel electrode 711 and the second sub-display electrode in the current pixel unit area 450 are both initial display voltages, such as -10V.

[0077] When the flexible color electronic paper display panel 10 is in a bent state, a voltage of +15V is input to the voltage of the second sub-display electrode in the current pixel unit area 450, so that the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 absorbs light and displays black, and a display voltage, such as a voltage of -15V, is input to the first sub-pixel electrode 711 to increase the brightness of the first sub-pixel unit area 451, thereby balancing the problem of decreased brightness and contrast of the flexible color electronic paper display panel 10 caused by the blackening of the second sub-pixel unit area 452.

[0078] Moreover, since the offset of the color resist 121 is greater as the position is further away from the center line 410, in the pixel unit area 450 in the first area 431 of the present application, along the first direction 421, the width of the second sub-pixel electrode 712 gradually increases, and in the pixel unit area 450 in the second area 433, along the second direction 422, the width of the second sub-pixel electrode 712 gradually increases.

[0079] Therefore, when compensating the first sub-pixel electrode 711, when the initial display voltage of the first sub-pixel electrode 711 is a positive voltage, the display voltage is less than the initial display voltage, and along the first direction 421, the difference between the display voltage and the initial display voltage gradually increases.

[0080] When the initial display voltage of the first sub-pixel electrode 711 is a negative voltage, the display voltage is greater than the initial display voltage, and along the first direction 421 , the difference between the display voltage and the initial display voltage gradually increases.

[0081] This avoids the problem that the first sub-pixel electrode 711 in the pixel unit area 450 at any position uses the same compensation voltage difference, resulting in the flexible color electronic paper display panel 10 having a darker brightness as it approaches the two sides, thereby improving the uniformity of the flexible color electronic paper display panel 10.

[0082] Embodiment 2: Fig.15 is a schematic diagram of an array substrate according to a second embodiment of the present application, Fig.15 As shown, different from the first embodiment, this embodiment is provided with two scan lines 640, namely a first scan line 641 and a second scan line 642, the first scan line 641 controls the opening of the first active switch 621, and the second scan line 642 controls the opening of the second active switch 622, as follows: The active switch layer 620 includes a first active switch 621, a second active switch 622, a first data line 631, a second data line 632, a first scan line 641, and a second scan line 642. The first active switch 621, the second active switch 622, the first data line 631, the second data line 632, the first scan line 641, and the second scan line 642 are all arranged on the array substrate 610. The first data line 631 and the first scan line 641 are arranged in a criss-cross pattern and define the pixel unit area 450.

[0083] The first active switch 621 connects the first data line 631 and the first sub-pixel electrode 711, the second active switch 622 connects the second data line 632 and the second sub-pixel electrode 712, the first scan line 641 controls the opening of the first active switch 621, and the second scan line 642 controls the opening of the second active switch 622.

[0084] Compared with the solution of the first embodiment, this embodiment sets two scanning lines 640 so that the second sub-pixel electrode 712 can be controlled separately. When the flexible color electronic paper display panel 10 is in a bent state, positive electricity can be input to the second sub-pixel electrode 712 separately, and there is no need to input a display voltage to the first sub-pixel electrode 711, so as to achieve the control of the electrophoretic reflective layer 300 in the second sub-pixel unit area 452 to absorb light without causing the display of the picture.

[0085] It should be noted that the limitations on the various steps involved in this solution, without affecting the implementation of the specific solution, are not deemed to limit the order of the steps. The steps written in front can be executed first, or later, or even simultaneously. As long as this solution can be implemented, it should be deemed to fall within the scope of protection of this application.

[0086] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0087] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. An array substrate for use in a flexible color electronic paper display panel, wherein the flexible color electronic paper display panel comprises an electrophoretic reflective layer, characterized in that: The array substrate comprises an array substrate, and an active switch layer and a pixel electrode layer sequentially arranged on the array substrate, and the array substrate further comprises a plurality of pixel unit areas; The pixel electrode layer includes a plurality of pixel electrodes, the pixel electrodes correspond to the pixel unit regions one by one, the pixel electrodes include a first sub-pixel electrode and a second sub-pixel electrode, the pixel unit region includes a first sub-pixel unit region and a second sub-pixel unit region, the first sub-pixel electrode is located in the first sub-pixel unit region, the second sub-pixel electrode is located in the second sub-pixel unit region, and the second sub-pixel electrode is located at the periphery of the first sub-pixel electrode; When the flexible color electronic paper display panel is in a bent state, the second sub-pixel electrode can be used to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light; when the flexible color electronic paper display panel is in an unbent state, the voltages of the first sub-pixel electrode and the second sub-pixel electrode are the same, and the electric fields in the first sub-pixel unit area and the second sub-pixel unit area are the same.

2. The array substrate according to claim 1, characterized in that: The array substrate comprises a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area comprises a first area and a second area, the first area and the second area are respectively located on both sides of a center line; In the pixel unit area in the first area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode close to the second area, and in the pixel unit area in the second area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode close to the first area.

3. The array substrate according to claim 1, characterized in that: The array substrate comprises a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area comprises a first area and a second area, the first area and the second area are respectively located on both sides of a center line; In the pixel unit area in the first area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode away from the second area, and in the pixel unit area in the second area, the second sub-pixel electrode is located on a side of the first sub-pixel electrode away from the first area.

4. The array substrate according to claim 1, characterized in that: The array substrate comprises a display area and a non-display area, the non-display area surrounds the display area, and the pixel unit area is located in the display area; the display area comprises a first area and a second area, the first area and the second area are respectively located on both sides of a center line; The number of second sub-pixel electrodes in each pixel unit area includes two, and the two second sub-pixel electrodes in each pixel unit area are connected. In the pixel unit area in the first area, the two second sub-pixel electrodes are respectively located on both sides of the first sub-pixel electrode close to and away from the second area, and in the pixel unit area in the second area, the two second sub-pixel electrodes are respectively located on both sides of the first sub-pixel electrode close to and away from the first area.

5. The array substrate according to any one of claims 2 to 4, characterized in that: A direction extending from the center line toward the first region is defined as a first direction, and a direction extending from the center line toward the second region is defined as a second direction; In the pixel unit area in the first area, along the first direction, the width of the second sub-pixel electrode gradually increases, and in the pixel unit area in the second area, along the second direction, the width of the second sub-pixel electrode gradually increases.

6. The array substrate according to claim 1, characterized in that: The active switch layer includes a first active switch, a second active switch, a first data line, a second data line and a scan line, wherein the first active switch, the second active switch, the first data line, the second data line and the scan line are all arranged on the array substrate, and the first data line and the scan line are arranged in a crisscross pattern to define the pixel unit area; The first active switch connects the first data line and the first sub-pixel electrode, the second active switch connects the second data line and the second sub-pixel electrode, and the scan line controls the opening of the first active switch and the second active switch simultaneously.

7. The array substrate according to claim 1, characterized in that: The active switch layer includes a first active switch, a second active switch, a first data line, a second data line, a first scan line, and a second scan line. The first active switch, the second active switch, the first data line, the second data line, the first scan line, and the second scan line are all arranged on the array substrate. The first data line and the first scan line are arranged in a crisscross pattern and define the pixel unit area. The first active switch connects the first data line and the first sub-pixel electrode, the second active switch connects the second data line and the second sub-pixel electrode, the first scan line controls the opening of the first active switch, and the second scan line controls the opening of the second active switch.

8. A flexible color electronic paper display panel, characterized in that: The flexible color electronic paper display panel comprises a color filter substrate, an electrophoretic reflective layer and an array substrate according to any one of claims 1 to 7, wherein the electrophoretic reflective layer is arranged between the color filter substrate and the array substrate.

9. A control method for a flexible color electronic paper display panel, characterized in that: The control method of the flexible color electronic paper display panel is used in the flexible color electronic paper display panel according to claim 8, and the steps of the control method of the flexible color electronic paper display panel include: Detect whether the flexible color electronic paper display panel is in a bent state; When the flexible color electronic paper display panel is in a bent state, controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light; When the flexible color electronic paper display panel is not in a bent state, the electric fields in the first sub-pixel unit and the second sub-pixel unit are controlled to be the same.

10. The control method of the flexible color electronic paper display panel according to claim 9, characterized in that: When the flexible color electronic paper display panel is in a bent state, the step of controlling the electrophoretic reflective layer in the second sub-pixel unit area to absorb light further includes: When the flexible color electronic paper display panel is in a bent state, positive electricity is input to the second sub-pixel electrode to control the electrophoretic reflective layer in the second sub-pixel unit area to absorb light.

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