Array substrate and driving method thereof, electronic paper display panel

Abstract

The present application discloses an array substrate and a driving method thereof, and an electronic paper display panel, which mainly relates to the field of display technology. The array substrate is used in the electronic paper display panel, and the data lines and the scanning lines are arranged on the substrate, and the data lines and the scanning lines are crisscrossed to define a plurality of pixel areas, and the pixel electrodes are arranged on the substrate, and each pixel electrode corresponds to each pixel area one by one; the array substrate also includes a common electrode sheet, which is arranged on the substrate, and each common electrode sheet corresponds to each pixel area one by one, and a common electrode sheet includes a plurality of sub-common electrodes, and the positive projection of the pixel electrode in the same pixel area covers the positive projection of the plurality of sub-common electrodes; the array substrate also includes a control module, and the control module can select the number of sub-common electrodes connected in the same pixel area according to the temperature on the array substrate. Through the above design, the electronic paper display panel can prevent the phenomenon of blurred display at high and low temperatures.

Description

Technical Field

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

[0002] With the development of digital technology, more and more display devices have entered people's lives, such as electronic paper display panels. Electronic paper display panels evenly disperse charged particles into a medium solution with a certain viscosity, and use the electric field between the pixel electrode and the common electrode to make the charged particles move electrophoretically for display.

[0003] The existing electronic paper display panel that realizes display by driving the electrophoretic particles to move through an electric field formed between the pixel electrode and the common electrode may have a blurred display image when it is at high or low temperatures. Summary of the invention

[0004] The purpose of the present application is to provide an array substrate and a driving method thereof, and an electronic paper display panel, so as to prevent the electronic paper display panel from displaying blurry images at high and low temperatures.

[0005] The present application discloses an array substrate, which is used in an electronic paper display panel. The array substrate includes a substrate, data lines, scan lines and pixel electrodes. The data lines and the scan lines are both arranged on the substrate, and the data lines and the scan lines are crisscrossed to define a plurality of pixel regions. The pixel electrodes are arranged on the substrate, and each of the pixel electrodes corresponds to each of the pixel regions one by one.

[0006] The array substrate further comprises a common electrode sheet, which is arranged on the substrate, and each of the common electrode sheets corresponds to each of the pixel regions one by one, one of the common electrode sheets comprises a plurality of sub-common electrodes, and in the same pixel region, the orthographic projection of the pixel electrode covers the orthographic projections of the plurality of sub-common electrodes;

[0007] The array substrate further comprises a control module, and the control module can select the number of the sub-common electrodes connected to the same pixel area according to the temperature on the array substrate.

[0008] Optionally, the number of the sub-common electrodes includes three, which are defined as a first sub-common electrode, a second sub-common electrode and a third sub-common electrode, the area of ​​the first sub-common electrode is larger than the area of ​​the second sub-common electrode, and the area of ​​the second sub-common electrode is larger than the area of ​​the third sub-common electrode.

[0009] Optionally, the array substrate further includes a first common electrode routing, a second common electrode routing and a third common electrode routing, wherein the first common electrode routing, the second common electrode routing and the third common electrode routing are all arranged on the substrate; the first common electrode routing is connected to the first sub-common electrode, the second common electrode routing is connected to the second sub-common electrode, and the third common electrode routing is connected to the third common electrode; the first common electrode routing is used to receive an external common electrode signal, the second common electrode routing is used to receive an external common electrode signal, and the third common electrode routing is used to receive an external common electrode signal;

[0010] The control module includes a sixth control switch group, a seventh control switch group and an eighth control switch group, the sixth control switch group is arranged at the input end of the first common electrode routing, the seventh control switch group is arranged at the input end of the second common electrode routing, and the eighth control switch group is arranged at the input end of the third common electrode routing; the sixth control switch group includes two sub-active switches, the seventh control switch group includes one sub-active switch, and the eighth control switch group includes one sub-active switch;

[0011] The control module further includes a first resistor, a second resistor, a third resistor and a controllable resistor, the first resistor and the second resistor have the same resistance value, the third resistor has a smaller resistance value than the first resistor, the first resistor is arranged on the first common electrode routing and is located on the side of the sixth control switch group away from the first sub-common electrode; the second resistor is arranged on the second common electrode routing and is located on the side of the seventh control switch group away from the second sub-common electrode; the third resistor and the controllable resistor are arranged in series on the third common electrode routing and are located on the side of the eighth control switch group away from the third sub-common electrode; the controllable resistor can make the sum of the resistances of the third resistor and the controllable resistor greater than or equal to the resistance value of the first resistor;

[0012] The control module also includes a first control line and a third control line, the first control line is connected to a sub-active switch in the sixth control switch group, a sub-active switch in the seventh control switch group, and a sub-active switch in the eighth control switch group, and can be used to control the on-off of the first common electrode routing, the second common electrode routing, and the third common electrode routing, and the third control line is only connected to another sub-active switch in the sixth control switch group, and can be used to control the on-off of the first common electrode routing.

[0013] Optionally, the array substrate includes a display area and a non-display area, the display area includes a first temperature area and a second temperature area, a plurality of pixel areas are arranged in the first temperature area, and a plurality of pixel areas are arranged in the second temperature area;

[0014] The number of the sub-common electrodes in a single pixel region in the first temperature region is greater than the number of the sub-common electrodes in a single pixel region in the second temperature region.

[0015] Optionally, the display area also includes a transition zone, which is located between the first temperature zone and the second temperature zone, the number of sub-common electrodes in a single pixel area in the first temperature zone is greater than the number of sub-common electrodes in a single pixel area in the transition zone, and the number of sub-common electrodes in a single pixel area in the transition zone is greater than the number of sub-common electrodes in a single pixel area in the second temperature zone.

[0016] Optionally, the array substrate further includes a driver chip connection end, the driver chip connection end is located in the non-display area, and the second temperature zone is located on a side of the first temperature zone away from the driver chip connection end.

[0017] Optionally, the array substrate further includes a first common electrode routing, a second common electrode routing and a third common electrode routing, wherein the first common electrode routing, the second common electrode routing and the third common electrode routing are all arranged on the substrate; the first common electrode routing is connected to the first sub-common electrode, the second common electrode routing is connected to the second sub-common electrode, and the third common electrode routing is connected to the third common electrode; the first common electrode routing is used to receive an external common electrode signal, the second common electrode routing is used to receive an external common electrode signal, and the third common electrode routing is used to receive an external common electrode signal;

[0018] The control module includes a first control switch group, a second control switch group and a third control switch group, wherein the first control switch group is arranged at the input end of the first common electrode routing, the second control switch group is arranged at the input end of the second common electrode routing, and the third control switch group is arranged at the input end of the third common electrode routing; the first control switch group includes three sub-active switches, which are respectively defined as a first sub-active switch, a second sub-active switch and a third sub-active switch; the second control switch group includes two sub-active switches, which are respectively defined as a fourth sub-active switch and a fifth sub-active switch; the third control switch group includes three sub-active switches, which are defined as a sixth sub-active switch;

[0019] The control module also includes a first control line, a second control line and a third control line. The first control line is simultaneously connected to the first sub-active switch, the fourth sub-active switch and the sixth sub-active switch, and can be used to simultaneously control the on-off of the first common electrode routing, the second common electrode routing and the third common electrode routing; the second control line is simultaneously connected to the third sub-active switch and the fifth sub-active switch, and can be used to simultaneously control the on-off of the first common electrode routing and the second common electrode routing; the third control line is only connected to the second sub-active switch, and can be used to control the on-off of the first common electrode routing.

[0020] The present application also discloses a driving method for an array substrate, the driving method being used for the array substrate described above, and the driving method comprising the steps of:

[0021] Acquiring the temperature on the array substrate;

[0022] When the temperature reaches a preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area to be turned on.

[0023] Optionally, the array substrate includes a display area and a non-display area, the display area includes a first temperature area and a second temperature area, a plurality of pixel areas are arranged in the first temperature area, and a plurality of pixel areas are arranged in the second temperature area; the number of the sub-common electrodes in a single pixel area in the first temperature area is greater than the number of the sub-common electrodes in a single pixel area in the second temperature area;

[0024] The step of obtaining the temperature on the array substrate comprises:

[0025] Obtaining a first average temperature of the first temperature region and obtaining a second average temperature of the second temperature region;

[0026] When the temperature reaches a preset temperature, the step of the control module controlling a preset number of sub-common electrodes in the same pixel area to be turned on comprises:

[0027] When the first average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the first temperature zone to turn on; when the second average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the second temperature zone to turn on.

[0028] The present application also discloses an electronic paper display panel, which includes an electronic paper membrane, a temperature acquisition module and an array substrate. The electronic paper membrane is attached to the array substrate, the array substrate drives the electronic paper membrane to display a picture, and the temperature acquisition module detects the temperature on the array substrate.

[0029] Compared with the existing array substrate solutions, the present application divides the common electrode in a pixel area into multiple sub-common electrodes, and selects the number of sub-common electrodes connected in the same pixel area according to the temperature on the array substrate through a control module, thereby adjusting the actual voltage of the pixel electrode to avoid blurred display of the electronic paper display panel under high or low temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] Figure 1 is a schematic diagram of an electronic paper display panel according to an embodiment of the present application;

[0032] Figure 2 is a cross-sectional schematic diagram of an electronic paper display panel according to an embodiment of the present application;

[0033] Figure 3 is a schematic diagram of an array substrate according to the first embodiment of the present application;

[0034] Figure 4 is a cross-sectional schematic diagram of an array substrate according to the first embodiment of the present application;

[0035] Figure 5 is a schematic diagram of a control module of the first embodiment of the present application;

[0036] Figure 6 is an enlarged schematic diagram of a control module including three control switch groups according to the first embodiment of the present application;

[0037] Figure 7 is a schematic diagram of a display area partitioning method according to the first embodiment of the present application;

[0038] Figure 8 is an enlarged schematic diagram of a control module including five control switch groups according to the first embodiment of the present application;

[0039] Fig. 9 is an enlarged schematic diagram of a control module of the second embodiment of the present application;

[0040] Fig.10 It is a schematic diagram of a driving method of an array substrate according to an embodiment of the present application.

[0041] Among them, 10, electronic paper display panel; 21, electronic paper film; 22, electrophoretic layer; 23, common electrode layer; 24, temperature acquisition module; 100, array substrate; 110, display area; 111, first temperature area; 112, transition area; 113, second temperature area; 120, non-display area; 200, substrate; 210, first metal layer; 220, first insulating layer; 230, second metal layer; 240, second insulating layer; 250, passivation layer; 260, image 261, pixel electrode; 310, data line; 320, scan line; 330, pixel area; 400, common electrode sheet; 410, sub-common electrode; 411, first sub-common electrode; 412, second sub-common electrode; 413, third sub-common electrode; 414, fourth sub-common electrode; 415, fifth sub-common electrode; 511, first common electrode wiring; 512, second common electrode wiring; 513, third common electrode wiring; 514, fourth common electrode wiring; 515, fifth common electrode wiring; Electrode routing; 521, first resistor; 522, second resistor; 523, third resistor; 524, controllable resistor; 600, control module; 611, first control switch group; 612, second control switch group; 613, third control switch group; 614, fourth control switch group; 615, fifth control switch group; 616, sixth control switch group; 617, seventh control switch group; 618, eighth control switch group; 620, sub-active switch; 621, first sub-active switch ; 622, the second sub-active switch; 623, the third sub-active switch; 624, the fourth sub-active switch; 625, the fifth sub-active switch; 626, the sixth sub-active switch; 627, the seventh sub-active switch; 628, the eighth sub-active switch; 629, the ninth sub-active switch; 631, the first control line; 632, the second control line; 633, the third control line; 634, the fourth control line; 635, the fifth control line; 710, the input end; 720, the driver chip connection end. DETAILED DESCRIPTION

[0042] 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.

[0043] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0044] Figure 1 is a schematic diagram of an electronic paper display panel according to an embodiment of the present application, Figure 2 is a cross-sectional schematic diagram of an electronic paper display panel according to an embodiment of the present application. Figure 1-Figure 2As shown, the present application discloses an electronic paper display panel 10, which includes an electronic paper film 21, a temperature acquisition module 24 and the array substrate 100, wherein the electronic paper film 21 is attached to the array substrate 100, the array substrate 100 drives the electronic paper film 21 to display a picture, and the temperature acquisition module 24 detects the temperature on the array substrate 100.

[0045] The temperature acquisition module 24 may be disposed inside the array substrate 100 or outside the array substrate 100, which is not limited herein.

[0046] The electronic paper film 21 includes an electrophoretic layer 22 and a common electrode layer 23 . The common electrode layer 23 is disposed on a side of the electrophoretic layer 22 away from the array substrate 100 . An electric field is formed between the common electrode layer 23 and the pixel electrode 261 to drive the electrophoretic particles in the electrophoretic layer 22 to move.

[0047] The present application also discloses an array substrate 100, which can be used in the electronic paper display panel 10 described above. For the array substrate 100, the present application provides the following design, which is specifically introduced through several embodiments:

[0048] Embodiment 1:

[0049] Figure 3 is a schematic diagram of an array substrate according to the first embodiment of the present application. Figure 4 is a cross-sectional schematic diagram of an array substrate of the first embodiment of the present application, such as Figure 3-Figure 4 As shown, the present application discloses an array substrate 100 , and the array substrate 100 is used in an electronic paper display panel 10 .

[0050] The array substrate 100 includes a substrate 200, a data line 310, a scan line 320 and a pixel electrode 261. The data line 310 and the scan line 320 are both arranged on the substrate 200, and the data line 310 and the scan line 320 are crisscrossed to define a plurality of pixel areas 330. The pixel electrode 261 is arranged on the substrate 200, and each pixel electrode 261 corresponds to each pixel area 330 one by one; in simple terms, a pixel electrode 261 is arranged in each pixel area 330.

[0051] The array substrate 100 also includes a common electrode sheet 400, which is arranged on the substrate 200, and each of the common electrode sheets 400 corresponds one-to-one to each of the pixel areas 330. One common electrode sheet 400 includes multiple sub-common electrodes 410, and in the same pixel area 330, the orthographic projection of the pixel electrode 261 covers the orthographic projections of multiple sub-common electrodes 410; in simple terms, multiple sub-common electrodes 410 are arranged in one pixel area 330.

[0052] The array substrate 100 further includes a control module 600 , which is disposed on the substrate 200 . The control module 600 can select the number of the sub-common electrodes 410 connected to the same pixel region 330 according to the temperature on the array substrate 100 .

[0053] Since the electronic paper display panel 10 drives the electrophoretic particles in the electrophoretic layer 22 to move through the electric field formed between the pixel electrode 261 and the common electrode layer 23, and the activity of the electrophoretic particles will have different movement performances under extreme temperatures, that is, the activity of the electrophoretic particles is higher in a high temperature environment and lower in a low temperature environment, the electronic paper display panel 10 will have a blurred image at high or low temperatures.

[0054] The pixel electrode 261 is connected to the data line 310 through an active switch. When the data line 310 charges the pixel electrode 261 with the same voltage, the charging capacity of the active switch is constant. Therefore, when the number of connected sub-common electrodes 410 in the pixel area 330 is greater, the actual voltage of the pixel electrode 261 will be smaller. When the number of connected sub-common electrodes 410 in the pixel area 330 is smaller, the actual voltage of the pixel electrode 261 will be larger. Therefore, the actual voltage value of the pixel electrode 261 can be adjusted by changing the number of connected sub-common electrodes 410 in a single pixel area 330.

[0055] The present application divides a common electrode in a pixel area 330 into a plurality of sub-common electrodes 410, and selects the number of the sub-common electrodes 410 connected in the same pixel area 330 according to the temperature on the array substrate 100 through the control module 600, thereby adjusting the actual voltage of the pixel electrode 261 to avoid the problem of blurred display in the electronic paper display panel 10 under high or low temperature conditions.

[0056] Exemplarily, when the array substrate 100 is at a high temperature, more sub-common electrodes 410 in the same pixel area 330 are controlled to be connected, thereby reducing the actual voltage of the pixel electrode 261 in the pixel area 330, which can prevent the displacement of electrophoretic particles in the electronic paper display panel 10 from being affected by the electric field in the adjacent pixel area 330 under high temperature conditions; when the array substrate 100 is at a low temperature, fewer sub-common electrodes 410 in the same pixel area 330 are controlled to be connected, thereby increasing the actual voltage of the pixel electrode 261 in the pixel area 330, which can prevent the displacement of electrophoretic particles in the electronic paper display panel 10 from being unable to reach the target position under low temperature conditions, thereby preventing the electronic paper display panel 10 from displaying blurred images at high and low temperatures.

[0057] Compared with the method of adjusting the output voltage of the data line 310 , the solution of the present application does not require improvement of the driver chip. The control module 600 is directly disposed on the substrate 200 , which can reduce the cost of the driver chip and thus improve product competitiveness.

[0058] Exemplarily, the case where the number of the sub-common electrodes 410 in each of the pixel areas 330 on the array substrate 100 is three is used for explanation. Since the number of the sub-common electrodes 410 is set to three, a temperature greater than 40°C can be set as a high temperature, a temperature less than 0°C as a low temperature, and a temperature between 0°C and 40°C as a normal temperature.

[0059] Specifically, the number of the sub-common electrodes 410 includes three, which are defined as the first sub-common electrode 411, the second sub-common electrode 412 and the third sub-common electrode 413 respectively. Then, when the temperature of the array substrate 100 is greater than 40°C, the first sub-common electrode 411, the second sub-common electrode 412 and the third sub-common electrode 413 in the same pixel area 330 are controlled to be connected at the same time, and the actual voltage of the pixel electrode 261 will decrease, thereby balancing the distance moved by highly active particles in a high temperature environment; when the temperature of the array substrate 100 is 0-40°C, the first sub-common electrode 411 and the second sub-common electrode 412 in the same pixel area 330 are controlled to be connected at the same time; when the temperature of the array substrate 100 is less than 0°C, the first sub-common electrode 411 in the same pixel area 330 is controlled to be connected, and at this time, the actual voltage of the pixel electrode 261 will increase, thereby balancing the distance moved by low-activity particles in a low temperature environment.

[0060] Furthermore, the area of ​​the first sub-common electrode 411 can be set larger than the area of ​​the second sub-common electrode 412, and the area of ​​the second sub-common electrode 412 can be set larger than the area of ​​the third sub-common electrode 413. In this way, in a low temperature environment, the area of ​​the first sub-common electrode 411 is large enough to ensure that the particles can move to the target position.

[0061] like Figure 4 As shown, the array substrate 100 further includes a first metal layer 210 , a first insulating layer 220 , a second metal layer 230 , a second insulating layer 240 , a passivation layer 250 and a pixel electrode layer 260 which are sequentially formed on the substrate 200 .

[0062] This application takes the example that the scan line 320 is located in the first metal layer 210 and the data line 310 is located in the second metal layer 230. The pixel electrode 261 is located in the pixel electrode layer 260, and the sub-common electrode 410 can be located in the first metal layer 210 or in the second metal layer 230, which is not limited here.

[0063] Figure 5 is a schematic diagram of a control module of the first embodiment of the present application, Figure 6 is an enlarged schematic diagram of a control module of the first embodiment of the present application including three control switch groups, such as Figure 5-Figure 6 As shown, this embodiment controls the connectivity of the three sub-common electrodes 410 in each pixel area 330 by setting a first control switch group 611, a second control switch group 612 and a third control switch group 613 and a first control line 631, a second control line 632 and a third control line 633.

[0064] That is, the array substrate 100 also includes a first common electrode line 511, a second common electrode line 512 and a third common electrode line 513, and the first common electrode line 511, the second common electrode line 512 and the third common electrode line 513 are all arranged on the substrate 200; the first common electrode line 511 is connected to the first sub-common electrode 411, the second common electrode line 512 is connected to the second sub-common electrode 412, and the third common electrode line 513 is connected to the third common electrode; the first common electrode line 511 is used to receive an external common electrode signal, the second common electrode line 512 is used to receive an external common electrode signal, and the third common electrode line 513 is used to receive an external common electrode signal, and the common electrode signal enters along the input end 710 of the control module 600.

[0065] Exemplarily, the sub-common electrode 410 is located in the first metal layer 210 , the first common electrode trace 511 is located in the second metal layer 230 , and the second common electrode trace 512 and the third common electrode trace 513 are located in the first metal layer 210 .

[0066] The control module 600 includes a first control switch group 611, a second control switch group 612 and a third control switch group 613. The first control switch group 611 is arranged at the input end of the first common electrode wiring 511, that is, connected to the end of the first common electrode wiring 511 away from the first sub-common electrode 411; the second control switch group 612 is arranged at the input end of the second common electrode wiring 512, that is, connected to the end of the second common electrode wiring 512 away from the second sub-common electrode 412; the third control switch group 613 is arranged at the input end of the third common electrode wiring 513, that is, connected to the end of the third common electrode wiring 513 away from the third sub-common electrode 413.

[0067] The first control switch group 611 includes three sub-active switches 620 arranged in parallel, which are respectively defined as a first sub-active switch 621, a second sub-active switch 622 and a third sub-active switch 623; the second control switch group 612 includes two sub-active switches 620 arranged in parallel, which are respectively defined as a fourth sub-active switch 624 and a fifth sub-active switch 625; the third control switch group 613 includes three sub-active switches 620 arranged in parallel, which are defined as a sixth sub-active switch 626.

[0068] The control module 600 also includes a first control line 631, a second control line 632 and a third control line 633. The first control line 631 is simultaneously connected to the first sub-active switch 621, the fourth sub-active switch 624 and the sixth sub-active switch 626, and can be used to simultaneously control the on and off of the first common electrode wiring 511, the second common electrode wiring 512 and the third common electrode wiring 513.

[0069] In simple terms, the first control line 631 is connected to the gates of the first sub-active switch 621, the fourth sub-active switch 624 and the sixth sub-active switch 626. The first sub-active switch 621, the fourth sub-active switch 624 and the sixth sub-active switch 626 can be turned on and off by outputting a switching signal through the first control line 631, so that the external common signal can be output to the first sub-common electrode 411, the second sub-common electrode 412 and the third sub-common electrode 413 along the first common electrode wiring 511, the second common electrode wiring 512 and the third common electrode wiring 513.

[0070] The second control line 632 is connected to the third sub-active switch 623 and the fifth sub-active switch 620 at the same time, and can be used to control the on and off of the first common electrode wiring 511 and the second common electrode wiring 512 at the same time.

[0071] In simple terms, the second control line 632 is connected to the gates of the third sub-active switch 623 and the fifth sub-active switch 620. The third sub-active switch 623 and the fifth sub-active switch 620 can be turned on and off by outputting a switching signal through the second control line 632, so that the external common signal can be output to the first sub-common electrode 411 and the second sub-common electrode 412 along the first common electrode wiring 511 and the second common electrode wiring 512.

[0072] The third control line 633 is connected only to the second sub-active switch 622 , and can be used to control the on and off of the first common electrode wiring 511 .

[0073] In simple terms, the third control line 633 is only connected to the gate of the second sub-active switch 622 , and the second sub-active switch 622 can be turned on and off by outputting a switching signal through the third control line 633 , so that the external common signal can be output to the first sub-common electrode 411 along the first common electrode wiring 511 .

[0074] Of course, the number of sub-common electrodes 410 can be set to more, and the temperature can be further divided. For example, if the number of sub-common electrodes 410 is 6, then less than 0°C can be set as the first temperature interval, 0-10°C as the second temperature interval, 10-20°C as the third temperature interval, 20-30°C as the fourth temperature interval, 30-40°C as the fifth temperature interval, and greater than 40°C as the sixth temperature interval.

[0075] At this time, it can be selected that when the array substrate 100 is in the first temperature range, only one of the sub-common electrodes 410 is connected; when the array substrate 100 is in the second temperature range, only two of the sub-common electrodes 410 are connected; when the array substrate 100 is in the third temperature range, only three of the sub-common electrodes 410 are connected; when the array substrate 100 is in the fourth temperature range, only four of the sub-common electrodes 410 are connected; when the array substrate 100 is in the fifth temperature range, only five of the sub-common electrodes 410 are connected; when the array substrate 100 is in the sixth temperature range, only six of the sub-common electrodes 410 are connected.

[0076] Of course, the temperature range and the number of sub-common electrodes 410 can be further divided, and the division method should belong to the protection scope of this application and will not be elaborated again.

[0077] Since the temperatures at different positions of the array substrate 100 are different, and this phenomenon is more obvious in particular in a large-sized electronic paper display panel 10 , the present application also makes different designs for the sub-common electrodes 410 in different areas.

[0078] Figure 7is a schematic diagram of a display area partitioning according to the first embodiment of the present application, Figure 8 is an enlarged schematic diagram of a control module of the first embodiment of the present application including five control switch groups, such as Figure 7-Figure 8 As shown, the different numbers of sub-common electrodes 410 in the pixel areas 330 in different areas on the array substrate 100 are taken as an example.

[0079] The array substrate 100 includes a display area 110 and a non-display area 120 . The display area 110 can be divided into two areas, that is, the display area 110 includes a first temperature area 111 and a second temperature area 113 . A plurality of pixel areas 330 are arranged in the first temperature area 111 , and a plurality of pixel areas 330 are arranged in the second temperature area 113 .

[0080] The number of the sub-common electrodes 410 in a single pixel region 330 in the first temperature region 111 is greater than the number of the sub-common electrodes 410 in a single pixel region 330 in the second temperature region 113. The area of ​​each sub-common electrode 410 may be equal.

[0081] For example, when the driving chip of the electronic paper display panel 10 is disposed on the driving chip connection terminal 720 of the non-display area 120 on the array substrate 100, the temperature of the display area 110 near the driving chip will be higher than that far from the driving chip.

[0082] That is, the array substrate 100 further includes a driver chip connection terminal 720 , the driver chip connection terminal 720 is located in the non-display area 120 , and the second temperature zone 113 is located on a side of the first temperature zone 111 away from the driver chip connection terminal 720 .

[0083] In this way, when the control module 600 is performing control, the number of connected sub-common electrodes 410 in the same pixel area 330 in the first temperature zone 111 can be controlled to be greater than the number of connected sub-common electrodes 410 in the same pixel area 330 in the second temperature zone 113, thereby achieving precise control in different areas of the array substrate 100.

[0084] Furthermore, the display area 110 also includes a transition area 112, which is located between the first temperature area 111 and the second temperature area 113, and the number of the sub-common electrodes 410 in a single pixel area 330 in the first temperature area 111 is greater than the number of the sub-common electrodes 410 in a single pixel area 330 in the transition area 112, and the number of the sub-common electrodes 410 in a single pixel area 330 in the transition area 112 is greater than the number of the sub-common electrodes 410 in a single pixel area 330 in the second temperature area 113.

[0085] Exemplarily, the number of sub-common electrodes 410 in a single pixel area 330 within the first temperature zone 111 is 5, namely, the first sub-common electrode 411, the second sub-common electrode 412, the third sub-common electrode 413, the fourth sub-common electrode 414 and the fifth sub-common electrode 415; the number of sub-common electrodes 410 in a single pixel area 330 within the transition zone 112 is 4, namely, the first sub-common electrode 411, the second sub-common electrode 412, the third sub-common electrode 413 and the fourth sub-common electrode 414; the number of sub-common electrodes 410 in a single pixel area 330 within the second temperature zone 113 is 3, namely, the first sub-common electrode 411, the second sub-common electrode 412 and the third sub-common electrode 413.

[0086] The fourth sub-common electrode 414 and the fifth sub-common electrode 415 can be understood as spare sub-common electrodes 410 , which are controlled only when the temperature difference between the first temperature region 111 , the transition region 112 and the second temperature region 113 is large.

[0087] Therefore, the present application only needs to add a fourth control switch group 614, a fifth control switch group 615, a fourth control line 634, a fifth control line 635, a fourth common electrode wiring 514, and a fifth common electrode wiring 515 on the original basis.

[0088] The fourth control switch group 614 is arranged at the input end of the fourth common electrode wiring 514, the fifth control switch group 615 is arranged at the input end of the fifth common electrode wiring 515, the fourth control switch group 614 includes a seventh sub-active switch 627 and an eighth sub-active switch 628 connected in parallel, and the fifth control switch group 615 includes a ninth sub-active switch 629.

[0089] The fourth control line 634 is connected to the seventh sub-active switch 627 and the ninth sub-active switch 629 at the same time, and can be used to simultaneously control the on and off of the fourth common electrode wiring 514 and the fifth common electrode wiring 515. The fifth control line 635 is connected to the eighth sub-active switch 628, and can be used to control the on and off of the fourth common electrode wiring 515.

[0090] Simply put, when only the fourth control line 634 is used to open the seventh sub-active switch 627 and the ninth sub-active switch 629, the fourth sub-common electrode 414 and the fifth sub-common electrode 415 in the first temperature zone 111, and the fourth sub-common electrode 414 in the transition zone 112 will all be connected at the same time; when only the fifth control line 635 is used to open the eighth sub-active switch 628, the fourth sub-common electrode 414 in the first temperature zone 111, and the fourth sub-common electrode 414 in the transition zone 112 will all be connected at the same time.

[0091] Thereby, when the temperature difference between the first temperature zone 111, the transition zone 112 and the second temperature zone 113 is large, additional control is performed on the first temperature zone 111 and the transition zone 112, thereby achieving a more accurate temperature supplementation method.

[0092] Embodiment 2:

[0093] Fig. 9 is an enlarged schematic diagram of a control module of the second embodiment of the present application, such as Fig. 9 As shown, different from the first embodiment, this embodiment further includes a controllable resistor 524 , and only two control lines, a first control line 631 and a third control line 633 , are provided in this embodiment.

[0094] Specifically, the array substrate 100 also includes a first common electrode line 511, a second common electrode line 512 and a third common electrode line 513, and the first common electrode line 511, the second common electrode line 512 and the third common electrode line 513 are all arranged on the substrate 200; the first common electrode line 511 is connected to the first sub-common electrode 411, the second common electrode line 512 is connected to the second sub-common electrode 412, and the third common electrode line 513 is connected to the third common electrode; the first common electrode line 511 is used to receive an external common electrode signal, the second common electrode line 512 is used to receive an external common electrode signal, and the third common electrode line 513 is used to receive an external common electrode signal.

[0095] The control module 600 includes a sixth control switch group 616, a seventh control switch group 617 and an eighth control switch group 618, the sixth control switch group 616 is arranged at the input end of the first common electrode wiring 511, the seventh control switch group 617 is arranged at the input end of the second common electrode wiring 512, and the eighth control switch group 618 is arranged at the input end of the third common electrode wiring 513; the sixth control switch group 616 includes two sub-active switches 620 arranged in parallel, the seventh control switch group 617 includes one sub-active switch 620, and the eighth control switch group 618 includes one sub-active switch 620.

[0096] The control module 600 further includes a first resistor 521 , a second resistor 522 , a third resistor 523 and a controllable resistor 524 . The first resistor 521 and the second resistor 522 have the same resistance value, and the third resistor 523 has a smaller resistance value than the first resistor 521 .

[0097] The first resistor 521 is arranged on the first common electrode routing 511 and is located on the side of the sixth control switch group 616 away from the first sub-common electrode 411; the second resistor 522 is arranged on the second common electrode routing 512 and is located on the side of the seventh control switch group 617 away from the second sub-common electrode 412; the third resistor 523 and the controllable resistor 524 are arranged in series on the third common electrode routing 513 and are located on the side of the eighth control switch group 618 away from the third sub-common electrode 413; the controllable resistor 524 can make the sum of the resistances of the third resistor 523 and the controllable resistor 524 greater than or equal to the resistance value of the first resistor 521.

[0098] The controllable resistor 524 includes an NTC photoresistor, and the sum of the resistance of the controllable resistor 524 and the resistance of the third resistor 523 can be greater than or equal to the first resistor 521. Of course, the controllable resistor 524 can also use a MOS transistor, and the on-resistance of the MOS transistor is controlled by the input signal of the control terminal to change to realize the function of the controllable resistor 524 variable resistance.

[0099] The control module 600 also includes a first control line 631 and a third control line 633. The first control line 631 is connected to a sub-active switch 620 in the sixth control switch group 616, a sub-active switch 620 in the seventh control switch group 617, and a sub-active switch 620 in the eighth control switch group 618, and can be used to control the on-off of the first common electrode routing 511, the second common electrode routing 512, and the third common electrode routing 513. The third control line 633 is only connected to another sub-active switch 620 in the sixth control switch group 616, and can be used to control the on-off of the first common electrode routing 511.

[0100] Exemplarily, the case where the number of the sub-common electrodes 410 in each of the pixel areas 330 on the array substrate 100 is three is used for explanation. Since the number of the sub-common electrodes 410 is set to three, a temperature greater than 40°C can be set as a high temperature, a temperature less than 0°C as a low temperature, and a temperature between 0°C and 40°C as a normal temperature.

[0101] Specifically, the number of the sub-common electrodes 410 includes three, which are respectively defined as a first sub-common electrode 411 , a second sub-common electrode 412 , and a third sub-common electrode 413 .

[0102] Then when the temperature of the array substrate 100 is greater than 40°C, the sum of the resistance of the controllable resistor 524 and the resistance of the third resistor 523 is equal to the first resistor 521, the first control line 631 controls a sub-active switch 620 in the sixth control switch group 616, the sub-active switch 620 in the seventh control switch group 617, and the sub-active switch 620 in the eighth control switch group 618 to turn on, the first common electrode wiring 511, the second common electrode wiring 512 and the third common electrode wiring 513 are turned on at the same time, the first sub-common electrode 411, the second sub-common electrode 412 and the third sub-common electrode 413 in the same pixel area 330 are connected at the same time, and the actual voltage of the pixel electrode 261 will decrease, thereby balancing the distance moved by the highly active particles in a high temperature environment.

[0103] When the temperature of the array substrate 100 is between 0 and 40°C, the sum of the resistance of the controllable resistor 524 and the resistance of the third resistor 523 is greater than the first resistor 521. Although the first control line 631 turns on a sub-active switch 620 in the sixth control switch group 616, a sub-active switch 620 in the seventh control switch group 617, and a sub-active switch 620 in the eighth control switch group 618, only the first common electrode wiring 511 and the second common electrode wiring 512 are turned on at the same time, and the first sub-common electrode 411 and the second sub-common electrode 412 in the same pixel area 330 are connected at the same time.

[0104] When the temperature of the array substrate 100 is less than 0°C, at this time, the third control line 633 controls another sub-active switch 620 in the sixth control switch group 616 to open, the first common electrode wiring 511 is turned on, and the first sub-common electrode 411 in the same pixel area 330 is connected, and the actual voltage of the pixel electrode 261 will increase, thereby balancing the distance moved by the low-activity particles in a low-temperature environment.

[0105] Fig.10 is a schematic diagram of a driving method of an array substrate according to an embodiment of the present application, such as Fig.10 As shown, the present application also discloses a driving method of an array substrate, the driving method is used for the array substrate 100 described above, and the driving method comprises the steps of:

[0106] S1: Acquire the temperature on the array substrate;

[0107] S2: When the temperature reaches a preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area to be turned on.

[0108] The device for acquiring the temperature on the array substrate 100 includes, for example, a temperature sensor, etc. The temperature acquisition module 24 may be disposed on the array substrate 100 or outside the array substrate 100 .

[0109] The temperature data acquired by the temperature sensor is transmitted to the control module 600, and the control module 600 selects the number of the sub-common electrodes 410 connected to the same pixel area 330 according to the temperature on the array substrate 100, so as to avoid the problem of blurred display of the electronic paper display panel 10 under high or low temperature conditions.

[0110] Exemplarily, when the array substrate 100 is at a high temperature, more sub-common electrodes 410 in the same pixel area 330 are controlled to be connected, thereby reducing the actual voltage of the pixel electrode 261 in the pixel area 330, which can prevent the electronic paper display panel 10 from having a blurred display problem under high temperature conditions; when the array substrate 100 is at a low temperature, fewer sub-common electrodes 410 in the same pixel area 330 are controlled to be connected, thereby reducing the actual voltage of the pixel electrode 261 in the pixel area 330, which can prevent the electronic paper display panel 10 from having a blurred display problem under low temperature conditions.

[0111] Further, in accordance with the present application, the array substrate 100 is divided into a plurality of temperature zones, that is, the array substrate 100 includes a display area 110 and a non-display area 120, the display area 110 includes a first temperature zone 111 and a second temperature zone 113, a plurality of pixel areas 330 are arranged in the first temperature zone 111, and a plurality of pixel areas 330 are arranged in the second temperature zone 113; the number of the sub-common electrodes 410 in a single pixel area 330 in the first temperature zone 111 is greater than the number of the sub-common electrodes 410 in a single pixel area 330 in the second temperature zone 113.

[0112] S1: The step of obtaining the temperature on the array substrate comprises:

[0113] S11: obtaining a first average temperature of a first temperature region and obtaining a second average temperature of a second temperature region;

[0114] S2: When the temperature reaches a preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area to be turned on, comprising:

[0115] S21: When the first average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the first temperature area to be turned on; when the second average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the second temperature area to be turned on.

[0116] When the display area 110 also includes a transition zone 112, the transition zone 112 is located between the first temperature zone 111 and the second temperature zone 113, the number of the sub-common electrodes 410 in a single pixel area 330 in the first temperature zone 111 is greater than the number of the sub-common electrodes 410 in a single pixel area 330 in the transition zone 112, and the number of the sub-common electrodes 410 in a single pixel area 330 in the transition zone 112 is greater than the number of the sub-common electrodes 410 in a single pixel area 330 in the second temperature zone 113.

[0117] S1: The step of obtaining the temperature on the array substrate comprises:

[0118] S12: obtaining a first average temperature of the first temperature region, obtaining a second average temperature of the second temperature region, and obtaining a third average temperature of the transition region;

[0119] S2: When the temperature reaches a preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area to be turned on, comprising:

[0120] S22: When the first average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the first temperature area to be turned on; when the second average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the second temperature area to be turned on; when the third average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the transition area to be turned on.

[0121] Through the above control method, an accurate compensation design can be made for the electronic paper display panel 10 when different temperatures appear at different positions. This method makes up for the defect that the temperature of the pixel area 330 at different positions in the length direction of the data line 310 cannot be changed by changing the data voltage, and the difference is large and it is impossible to use voltage supplement in a targeted manner.

[0122] 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.

[0123] 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.

[0124] 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, characterized in that: The array substrate is used in an electrophoretic electronic paper display panel, and comprises a substrate, data lines, scan lines and pixel electrodes. The data lines and the scan lines are both arranged on the substrate, and the data lines and the scan lines are crisscrossed to define a plurality of pixel regions. The pixel electrodes are arranged on the substrate, and each of the pixel electrodes corresponds to each of the pixel regions one by one. The array substrate further comprises a common electrode sheet, which is arranged on the substrate, and each of the common electrode sheets corresponds to each of the pixel regions one by one, one of the common electrode sheets comprises a plurality of sub-common electrodes, and in the same pixel region, the orthographic projection of the pixel electrode covers the orthographic projections of the plurality of sub-common electrodes; The array substrate further comprises a control module, and the control module can select the number of connected sub-common electrodes in the same pixel area according to the temperature on the array substrate; When the array substrate is at a first temperature, a first number of sub-common electrodes in the same pixel area are controlled to be connected, thereby reducing the actual voltage of the pixel electrode in the pixel area; when the array substrate is at a second temperature, a second number of sub-common electrodes in the same pixel area are controlled to be connected, the first temperature is greater than the second temperature, and the second number is less than the first number.

2. The array substrate according to claim 1, characterized in that: The number of the sub-common electrodes includes three, which are respectively defined as a first sub-common electrode, a second sub-common electrode and a third sub-common electrode. The area of ​​the first sub-common electrode is larger than the area of ​​the second sub-common electrode, and the area of ​​the second sub-common electrode is larger than the area of ​​the third sub-common electrode.

3. The array substrate according to claim 2, characterized in that: The array substrate further includes a first common electrode routing, a second common electrode routing and a third common electrode routing, wherein the first common electrode routing, the second common electrode routing and the third common electrode routing are all arranged on the substrate; the first common electrode routing is connected to the first sub-common electrode, the second common electrode routing is connected to the second sub-common electrode, and the third common electrode routing is connected to the third common electrode; the first common electrode routing is used to receive an external common electrode signal, the second common electrode routing is used to receive an external common electrode signal, and the third common electrode routing is used to receive an external common electrode signal; The control module includes a first control switch group, a second control switch group and a third control switch group, wherein the first control switch group is arranged at the input end of the first common electrode routing, the second control switch group is arranged at the input end of the second common electrode routing, and the third control switch group is arranged at the input end of the third common electrode routing; the first control switch group includes three sub-active switches, which are respectively defined as a first sub-active switch, a second sub-active switch and a third sub-active switch; the second control switch group includes two sub-active switches, which are respectively defined as a fourth sub-active switch and a fifth sub-active switch; the third control switch group includes three sub-active switches, which are defined as a sixth sub-active switch; The control module also includes a first control line, a second control line and a third control line. The first control line is simultaneously connected to the first sub-active switch, the fourth sub-active switch and the sixth sub-active switch, and can be used to simultaneously control the on-off of the first common electrode routing, the second common electrode routing and the third common electrode routing; the second control line is simultaneously connected to the third sub-active switch and the fifth sub-active switch, and can be used to simultaneously control the on-off of the first common electrode routing and the second common electrode routing; the third control line is only connected to the second sub-active switch, and can be used to control the on-off of the first common electrode routing.

4. The array substrate according to claim 1, characterized in that: The array substrate comprises a display area and a non-display area, the display area comprises a first temperature area and a second temperature area, a plurality of pixel areas are arranged in the first temperature area, and a plurality of pixel areas are arranged in the second temperature area; The number of the sub-common electrodes in a single pixel region in the first temperature region is greater than the number of the sub-common electrodes in a single pixel region in the second temperature region.

5. The array substrate according to claim 4, characterized in that: The display area also includes a transition zone, which is located between the first temperature zone and the second temperature zone, the number of sub-common electrodes in a single pixel area in the first temperature zone is greater than the number of sub-common electrodes in a single pixel area in the transition zone, and the number of sub-common electrodes in a single pixel area in the transition zone is greater than the number of sub-common electrodes in a single pixel area in the second temperature zone.

6. The array substrate according to claim 5, characterized in that: The array substrate further includes a driver chip connection end, the driver chip connection end is located in the non-display area, and the second temperature zone is located on a side of the first temperature zone away from the driver chip connection end.

7. The array substrate according to claim 2, characterized in that: The array substrate further includes a first common electrode routing, a second common electrode routing and a third common electrode routing, wherein the first common electrode routing, the second common electrode routing and the third common electrode routing are all arranged on the substrate; the first common electrode routing is connected to the first sub-common electrode, the second common electrode routing is connected to the second sub-common electrode, and the third common electrode routing is connected to the third common electrode; the first common electrode routing is used to receive an external common electrode signal, the second common electrode routing is used to receive an external common electrode signal, and the third common electrode routing is used to receive an external common electrode signal; The control module includes a sixth control switch group, a seventh control switch group and an eighth control switch group, the sixth control switch group is arranged at the input end of the first common electrode routing, the seventh control switch group is arranged at the input end of the second common electrode routing, and the eighth control switch group is arranged at the input end of the third common electrode routing; the sixth control switch group includes two sub-active switches, the seventh control switch group includes one sub-active switch, and the eighth control switch group includes one sub-active switch; The control module further includes a first resistor, a second resistor, a third resistor and a controllable resistor, the first resistor and the second resistor have the same resistance value, the third resistor has a smaller resistance value than the first resistor, the first resistor is arranged on the first common electrode routing and is located on the side of the sixth control switch group away from the first sub-common electrode; the second resistor is arranged on the second common electrode routing and is located on the side of the seventh control switch group away from the second sub-common electrode; the third resistor and the controllable resistor are arranged in series on the third common electrode routing and are located on the side of the eighth control switch group away from the third sub-common electrode; the controllable resistor can make the sum of the resistances of the third resistor and the controllable resistor greater than or equal to the resistance value of the first resistor; The control module also includes a first control line and a third control line, the first control line is connected to a sub-active switch in the sixth control switch group, a sub-active switch in the seventh control switch group, and a sub-active switch in the eighth control switch group, and can be used to control the on-off of the first common electrode routing, the second common electrode routing, and the third common electrode routing, and the third control line is only connected to another sub-active switch in the sixth control switch group, and can be used to control the on-off of the first common electrode routing.

8. A method for driving an array substrate, characterized in that: The driving method is used for the array substrate according to any one of claims 1 to 7, and the driving method comprises the steps of: Acquiring the temperature on the array substrate; When the temperature reaches a preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area to be turned on.

9. The driving method of the array substrate according to claim 8, characterized in that: The array substrate comprises a display area and a non-display area, the display area comprises a first temperature area and a second temperature area, a plurality of pixel areas are arranged in the first temperature area, and a plurality of pixel areas are arranged in the second temperature area; the number of the sub-common electrodes in a single pixel area in the first temperature area is greater than the number of the sub-common electrodes in a single pixel area in the second temperature area; The step of obtaining the temperature on the array substrate includes: Obtaining a first average temperature of the first temperature region and obtaining a second average temperature of the second temperature region; When the temperature reaches a preset temperature, the step of the control module controlling a preset number of sub-common electrodes in the same pixel area to be turned on comprises: When the first average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the first temperature zone to turn on; when the second average temperature reaches the preset temperature, the control module controls a preset number of sub-common electrodes in the same pixel area in the second temperature zone to turn on.

10. An electronic paper display panel, characterized in that: The electronic paper display panel includes an electronic paper film, a temperature acquisition module and an array substrate as described in any one of claims 1 to 7, the electronic paper film is attached to the array substrate, the array substrate drives the electronic paper film to display a picture, and the temperature acquisition module detects the temperature on the array substrate.

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