Electronic paper display panel and display device

Abstract

Embodiments of the present application disclose an electronic paper display panel and a display device. The electronic paper display panel comprises a plurality of scanning lines, a plurality of data lines, a plurality of pixel units defined by the intersection of the scanning lines and the data lines, and any one of the pixel units comprises a first sub-pixel and a second sub-pixel. The first sub-pixel and the second sub-pixel are respectively driven by different scanning lines and different data lines. A first pixel electrode of the first sub-pixel is connected with a second pixel electrode of the second sub-pixel, and a first common electrode of the first sub-pixel and a second common electrode of the second sub-pixel are not connected. Embodiments of the present application can improve the influence of voltage switching on the transparent electrode on the pixel electrode, improve the coupling effect of the electrode, reduce the voltage drop of the pixel voltage, and thus improve the display effect of the electronic paper display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to an electronic paper display panel and display device. Background Technology

[0002] Each pixel on an electronic paper display panel is driven by a transistor integrated behind it, enabling high-speed, high-brightness, and high-contrast display.

[0003] The existing electronic paper display panel includes data lines, scan lines and pixel electrodes. Thin-film transistors are formed at the intersection of the data lines and scan lines. The control terminal of the thin-film transistor is connected to the scan line, the source of the thin-film transistor is connected to the data line, and the drain of the thin-film transistor is connected to the pixel electrode.

[0004] Existing electronic paper display panels suffer from voltage drops in the pixels due to voltage changes on the transparent electrodes coupled to the pixel electrodes via parasitic capacitance. This voltage drop negatively impacts particle propulsion in the electronic paper ink, thus reducing the display performance of the electronic paper display panel. Summary of the Invention

[0005] The present invention provides an electronic paper display panel and a display device that can improve the impact of voltage switching on the transparent electrode on the pixel electrode, improve the coupling effect of the electrode, reduce the voltage drop of the pixel voltage, and thus improve the display effect of the electronic paper display panel.

[0006] In a first aspect, embodiments of the present invention provide an electronic paper display panel, comprising: multiple scan lines; multiple data lines; and multiple pixel units defined by the intersection of the scan lines and the data lines, wherein any one of the pixel units comprises: a first sub-pixel and a second sub-pixel; wherein the first sub-pixel and the second sub-pixel are driven by different scan lines and different data lines, a first pixel electrode of the first sub-pixel is connected to a second pixel electrode of the second sub-pixel, and a first common electrode of the first sub-pixel and a second common electrode of the second sub-pixel are not connected.

[0007] Optionally, each row of pixel units is connected to two scan lines on either side of it and is driven by the two scan lines located on either side of it.

[0008] Optionally, each column of pixel units is connected to two data lines on both sides and is driven by the two data lines located on both sides.

[0009] Optionally, a data line is provided between two adjacent columns of pixel units, and the two adjacent columns of pixel units share the data line; along the extension direction of the scan line, the two sub-pixels in two adjacent pixel units that are connected by the shared data line are driven by different scan lines, and the sub-pixel is either the first sub-pixel or the second sub-pixel.

[0010] Optionally, the first sub-pixel includes a first switching module and a first pixel electrode; the second sub-pixel includes a second switching module and a second pixel electrode; both the first and second switching modules include a first end, a second end, and a control end; the first end of the first switching module is connected to a first data line, the second end of the first switching module is connected to the first pixel electrode, the first end of the second switching module is connected to a second data line, the second end of the second switching module is connected to the second pixel electrode, and the first pixel electrode is connected to the second pixel electrode; the control end of the first and second switching modules are connected to different scan lines, and the first and second switching modules are used to turn on or off in response to the scan signal on the corresponding scan line.

[0011] Optionally, the first switching module includes a first transistor, and the second switching module includes a second transistor. The gate of the first transistor is the control terminal of the first switching module, the first electrode of the first transistor is the first terminal of the first switching module, and the second electrode of the first transistor is the second terminal of the first switching module. The gate of the second transistor is the control terminal of the second switching module, the first electrode of the second transistor is the first terminal of the second switching module, and the second electrode of the second transistor is the second terminal of the second switching module.

[0012] Optionally, the first sub-pixel further includes a first storage capacitor, and the second sub-pixel further includes a second storage capacitor; the first end of the first storage capacitor is connected to the second electrode of the first transistor, and the second end of the first storage capacitor is connected to the first common electrode; the first end of the second storage capacitor is connected to the second electrode of the second transistor, and the second end of the second storage capacitor is connected to the second common electrode; wherein, both the first common electrode and the second common electrode are connected to a DC voltage.

[0013] Optionally, the electronic paper display panel also includes transparent electrodes connected to an AC voltage.

[0014] Optionally, a parasitic capacitance is formed between the transparent electrode and the second pixel electrode.

[0015] In a second aspect, embodiments of the present invention provide a display device, including the electronic paper display panel provided in the first aspect.

[0016] The electronic paper display panel provided in this invention divides a pixel unit into a first sub-pixel and a second sub-pixel. The first common electrode of the first sub-pixel and the second common electrode of the second sub-pixel are not connected. This allows for independent control of the first and second sub-pixels, enabling the input of different data signals to produce different display brightness and colors. This facilitates the achievement of diverse, multi-color, and multi-grayscale display requirements for electronic paper display panels and prepares for subsequent multi-color module driving. When the driving voltage on the transparent electrode changes and affects the voltage of the second pixel electrode, the connection between the first pixel electrode of the first sub-pixel and the second pixel electrode of the second sub-pixel allows the charge stored in the storage capacitor of the first sub-pixel to replenish the voltage of the second pixel electrode of the second sub-pixel through the first pixel electrode. This solves the coupling effect problem of the driving voltage change on the transparent electrode affecting the voltage of the second pixel electrode, thus compensating for voltage drops in the second pixel electrode and improving the display effect of the electronic paper display panel.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of an electronic paper display panel provided by existing technology;

[0020] Figure 2 This is a schematic diagram of the structure of an electronic paper display panel provided in an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 A schematic diagram showing the connection of several pixel units;

[0022] Figure 4 This is a schematic diagram of the structure of another electronic paper display panel provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of another electronic paper display panel provided in an embodiment of the present invention;

[0024] Figure 6This is a cross-sectional structural diagram of an electronic paper display panel provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0028] As described in the background section, in the prior art, when the voltage on the common electrode switches, the voltage of the pixel electrode is coupled through parasitic capacitance; this causes a voltage drop in the pixel voltage, which has an adverse effect on the particle propulsion in the electronic paper ink, thereby reducing the display effect of the electronic paper display panel. Figure 1 This is a schematic diagram of the structure of an electronic paper display panel provided by existing technology, wherein... Figure 1 The image only schematically illustrates a portion of the structure of the electronic paper display panel; see reference. Figure 1 The electronic paper display panel includes scan lines (gate) and data lines (data). A storage capacitor (Cst) is formed between the pixel electrode and the common electrode connected to the thin-film transistor (M1). There is also a parasitic capacitance (Clc). The common electrode is connected to a DC voltage (DC). To meet the requirements of multi-color display, the current electronic paper display panel uses an AC voltage driving method to increase the voltage difference between the common electrode and the pixel electrode of the transparent electrode, so as to achieve the purpose of fast screen refresh and display. Since there is a parasitic capacitance (Clc) between the transparent electrode and the pixel electrode, the voltage of the pixel electrode will be coupled through the parasitic capacitance (Clc) when driven by AC voltage, which will lead to a voltage drop of the pixel electrode voltage. This has an adverse effect on the particle propulsion in the electronic paper ink, so the AC voltage driving method cannot achieve the expected display effect.

[0029] To address the aforementioned issues, this invention provides an electronic paper display panel that compensates for the voltage of the second pixel electrode, thereby improving the display effect of the electronic paper display panel. Figure 2 This is a schematic diagram of the structure of an electronic paper display panel provided in an embodiment of the present invention. Figure 3 yes Figure 2 A schematic diagram showing the connection of several pixel units.

[0030] Combination Figure 2 and Figure 3 The electronic paper display panel includes: multiple scan lines 100; multiple data lines 200; and multiple pixel units 30 defined by the intersection of the scan lines 10 and the data lines 20, wherein any pixel unit 30 includes: a first sub-pixel 301 and a second sub-pixel 302; wherein the first sub-pixel 301 and the second sub-pixel 302 are driven by different scan lines 10 and different data lines 20 respectively, the first pixel electrode of the first sub-pixel 301 is connected to the second pixel electrode of the second sub-pixel 302, and the first common electrode of the first sub-pixel 301 and the second common electrode of the second sub-pixel 302 are not connected.

[0031] In one embodiment, scan line 10 is connected to a scan driver, which can be located on at least one of the left and right bezel areas of the electronic paper display panel. The scan driver typically consists of multiple cascaded shift registers connected to clock signal lines, high-level signal lines, and low-level signal lines located in the bezel areas. The cascaded shift registers generate scan signals and output them to the scan line based on the signals on the clock signal lines, high-level signal lines, and low-level signal lines. The cascaded shift registers sequentially provide scan signals with conduction level pulses to scan line 10. Data line 20 can be connected to a data driver, which is located in the lower bezel area or on a flexible circuit board bonded to the lower bezel area. The data driver can be a display driver IC (DDIC), which provides data voltage to data line 20. In another embodiment, both scan line 10 and data line 20 are connected to a data driver, which provides scan signals to scan line 10 and data voltage to data line 20. Figure 3 The illustration schematically shows a configuration where the scan driver is located in the left bezel area of ​​the electronic paper display panel, and the data driver is located in the bottom bezel area of ​​the electronic paper display panel.

[0032] Specifically, Figure 2The diagram schematically illustrates the scenario where the first sub-pixel 301 is driven by the first scan line Gate1 and the first data line Data1, and the second sub-pixel 302 is driven by the second scan line Gate2 and the second data line Data2. The first scan line Gate1 transmits scan signals to the first sub-pixel 301, and the first data line Data1 transmits data signals to the first sub-pixel 301. The second scan line Gate2 transmits scan signals to the second sub-pixel 302, and the second data line Data2 transmits data signals to the second sub-pixel 302. The scan signals transmitted on the first scan line Gate1 can control the on / off state of the switching module in the first sub-pixel 301. The scan signals transmitted on the second scan line Gate2 can control the on / off state of the switching module in the second sub-pixel 302. In other words, the first scan line Gate1 controls the display of the image in the area of ​​the first sub-pixel 301, and the second scan line Gate2 controls the display of the image in the area of ​​the second sub-pixel 302.

[0033] The first scan signal transmitted on the first scan line Gate1 and the second scan signal transmitted on the second scan line Gate2 can operate independently or simultaneously, requiring driver modifications based on actual display requirements. For example, when the first scan signal on the first scan line Gate1 and the second scan signal on the second scan line Gate2 operate simultaneously, the first scan signal on the first scan line Gate1 controls the switching module in the first sub-pixel 301 to be turned on, while the second scan signal on the second scan line Gate2 controls the switching module in the second sub-pixel 302 to be turned on. The first data voltage on the first data line Data1 is transmitted to the first pixel electrode via the turned-on switching module, and the second data voltage on the second data line Data2 is transmitted to the second pixel electrode via the turned-on switching module. In other words, the first sub-pixel 301 and the second sub-pixel 302 simultaneously display the image. Furthermore, by dividing a pixel unit into a first sub-pixel and a second sub-pixel, and setting the first common electrode of the first sub-pixel and the second common electrode of the second sub-pixel to be unconnected, the first sub-pixel 301 and the second sub-pixel 302 can be controlled independently, enabling the first sub-pixel 301 and the second sub-pixel 302 to display different colors; thus achieving direct control over the grayscale requirements of the final display of the pixel unit 30. In other words, when the first sub-pixel 301 charges the first pixel electrode (i.e., transmits a first data voltage to the first pixel electrode), a second data voltage can be transmitted to the second pixel electrode of the second sub-pixel 302. The first data voltage and the second data voltage are not equal. For example, when the first sub-pixel 301 displays black and the second sub-pixel 302 displays white, the pixel unit 30 ultimately displays gray; when the first sub-pixel 301 displays red and the second sub-pixel 302 displays black, the pixel unit 30 ultimately displays brown; when the first sub-pixel 301 displays red and the second sub-pixel 302 displays white, the pixel unit 30 ultimately displays light pink; and when the first sub-pixel 301 displays dark yellow and the second sub-pixel 302 displays white, the pixel unit 30 ultimately displays light yellow.The scanning signal on the first row of scan lines 10 controls the sub-pixels of the first row to display the image. At this time, the first sub-pixel in the first row will not perform charge compensation for the second sub-pixel. When the scanning signals on other rows of scan lines 10 control the sub-pixels of other rows to display the image, since a fixed voltage difference must be formed between the second pixel electrode and the transparent electrode, when the scanning signals on other rows of scan lines 10 control the sub-pixels of the second row to display the image, that is, when the data voltage on the data line 20 is switched, the AC signal connected to the transparent electrode will also be switched. Since the AC signal connected to the transparent electrode is a common signal, the AC signal connected to the transparent electrode at this time will couple the voltage of the second sub-pixel in the first row. The charge stored in the storage capacitor of the first sub-pixel will replenish the voltage of the second pixel electrode of the second sub-pixel through the first pixel electrode. This can solve the problem of the coupling effect of the driving voltage change on the voltage of the second pixel electrode when the transparent electrode changes. That is, when there is a voltage drop in the voltage of the second pixel electrode, the voltage of the second pixel electrode is compensated in time, thereby improving the display effect of the electronic paper display panel.

[0034] Continue to refer to Figure 2 and Figure 3 The electronic paper display panel operates as follows: the scanning signal on the first scan line 10 controls the sub-pixels of the first row to display the image, while the sub-pixels of other rows do not display the image; the scanning signal on the second scan line 10 controls the sub-pixels of the second row to display the image, while the sub-pixels of other rows do not display the image; ...; the scanning signal on the kth scan line 100 controls the sub-pixels of the kth row to display the image, while the sub-pixels of other rows do not display the image; the sub-pixels of other rows do not display the image. Here, the sub-pixel is either the first sub-pixel 301 or the second sub-pixel 302.

[0035] Figure 4 This is a schematic diagram of the structure of another electronic paper display panel provided in an embodiment of the present invention, as shown below. Figure 4 As shown, optionally, each row of pixel units 30 is connected to two scan lines 10 on both sides and is driven by the two scan lines 10 located on both sides.

[0036] Optionally, each column of pixel units 30 is connected to two data lines 20 on both sides and driven by the two data lines 20 on both sides. Further, a data line 20 is provided between two adjacent columns of pixel units 30, and the two adjacent columns of pixel units 30 share this data line 20; along the extension direction of the scan line 10, the two sub-pixels in two adjacent pixel units 30 connected by the shared data line 20 are driven by different scan lines 10, and the sub-pixels are a first sub-pixel 301 or a second sub-pixel 302.

[0037] The first sub-pixel 301 includes a first switch module 310 and a first pixel electrode; the second sub-pixel 302 includes a second switch module 320 and a second pixel electrode; both the first switch module 310 and the second switch module 320 include a first end, a second end, and a control end; the first end of the first switch module 310 is connected to a first data line Data1, the second end of the first switch module 310 is connected to the first pixel electrode, the first end of the second switch module 320 is connected to a second data line data2, the second end of the second switch module 320 is connected to the second pixel electrode, the control end of the first switch module 310 and the control end of the second switch module 320 are connected to different scan lines 10, and the first switch module 310 and the second switch module 320 are used to turn on or off in response to the scan signal on the corresponding scan line.

[0038] The first sub-pixel 301 further includes a first storage capacitor Cst1, and the second sub-pixel 302 further includes a second storage capacitor Cst2; the first end of the first storage capacitor Cst1 is connected to the second end of the first switch module 310, and the second end of the first storage capacitor Cst1 is connected to the first common electrode com1; the first end of the second storage capacitor Cst2 is connected to the second end of the second switch module 320, and the second end of the second storage capacitor Cst2 is connected to the second common electrode com2; wherein, both the first common electrode com1 and the second common electrode com2 are connected to a DC voltage.

[0039] Figure 5 This is a schematic diagram of the structure of another electronic paper display panel provided in an embodiment of the present invention, as shown below. Figure 5 As shown, optionally, the first switching module 310 includes a first transistor TFT1, and the second switching module 320 includes a second transistor TFT2. The gate of the first transistor TFT1 is the control terminal of the first switching module 310, the first electrode of the first transistor TFT1 is the first terminal of the first switching module 310, and the second electrode of the first transistor TFT1 is the second terminal of the first switching module 310. The gate of the second transistor TFT2 is the control terminal of the second switching module 320, the first electrode of the second transistor TFT2 is the first terminal of the second switching module 320, and the second electrode of the second transistor TFT1 is the second terminal of the second switching module 320.

[0040] It should be noted that the above-mentioned transistor can be an N-type transistor or a P-type transistor; the first electrode of the above-mentioned transistor can be the source electrode and the second electrode can be the drain electrode, or the first electrode of the above-mentioned thin film transistor can be the drain electrode and the second electrode can be the source electrode. This invention does not limit this.

[0041] The first sub-pixel 301 further includes a first storage capacitor Cst1, and the second sub-pixel 302 further includes a second storage capacitor Cst2; the first terminal of the first storage capacitor Cst1 is connected to the second electrode of the first transistor TFT1, and the second terminal of the first storage capacitor Cst1 is connected to the first common electrode com1; the first terminal of the second storage capacitor Cst2 is connected to the second electrode of the second transistor TFT2, and the second terminal of the second storage capacitor Cst2 is connected to the second common electrode com2; wherein, both the first common electrode com1 and the second common electrode com2 are connected to a DC voltage.

[0042] Specifically, the first data voltage supplied to the first pixel electrode is stored in the first storage capacitor Cst1, and the second data voltage supplied to the second pixel electrode is stored in the second storage capacitor Cst2. The first data voltage is used to control the light emission brightness of the first sub-pixel 301, and the second data voltage is used to control the light emission brightness of the second sub-pixel 302, thereby controlling the display screen of the electronic paper display panel.

[0043] Figure 6 This is a cross-sectional structural diagram of an electronic paper display panel provided in an embodiment of the present invention, as shown below. Figure 6 As shown, the pixel area of ​​the electronic paper display panel includes a TFT array substrate 40, which includes a glass substrate 41 and a storage capacitor array. Each storage capacitor in the storage capacitor array includes a common electrode 42 located inside the glass substrate 41, a transparent capacitor dielectric layer 43 located on the common electrode 42, and a pixel electrode 44 located on the transparent capacitor dielectric layer 43. The materials of the common electrode 42 and the pixel electrode 44 are both transparent conductive materials. The electronic paper display panel also includes multiple electronic paper capsules 51 located on the TFT array substrate 40, transparent electrodes 52 located on the electronic paper capsules 51, the transparent electrodes 52 being connected to an AC voltage, and a display substrate 53 located on the transparent electrodes 52. The electronic paper capsules contain charged particles of different colors, and the transparent electrodes 52 are made of nano-indium tin oxide (ITO).

[0044] In this embodiment, the display principle of the electronic paper display panel is as follows: an AC voltage is applied to the transparent electrode 52, and a corresponding pixel voltage is applied to the corresponding pixel electrode on the pixel electrode 44 through the data line. The potential difference between the pixel electrode 44 and the transparent electrode 52 is the pixel potential difference. By controlling this potential difference, the movement direction of charged particles in the pixel region is controlled. The particles reflect light, thereby achieving color display.

[0045] In this embodiment, pixel electrode 44 includes the first pixel electrode and the second pixel electrode of the above embodiments, transparent capacitor dielectric layer 43 includes the first storage capacitor Cst1 and the second storage capacitor Cst2 of the above embodiments, and common electrode includes the first common electrode com1 and the second common electrode com2 of the above embodiments. First sub-pixel 301 includes: first transistor TFT1 and first pixel electrode; second sub-pixel 302 includes: second transistor TFT2 and second pixel electrode.

[0046] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 7 As shown, the display device includes any of the electronic paper display panels provided in the above embodiments. Therefore, this display device also has the beneficial effects of the display panels in the above embodiments. The similarities can be understood with reference to the explanation of the display panels above, and will not be repeated below.

[0047] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An electronic paper display panel, characterized in that, include: Multiple scan lines; Multiple data cables; A plurality of pixel units defined by the intersection of the scan lines and the data lines, wherein any one of the pixel units includes: a first sub-pixel and a second sub-pixel; In this configuration, the first sub-pixel and the second sub-pixel are driven by different scan lines and different data lines, the first pixel electrode of the first sub-pixel is connected to the second pixel electrode of the second sub-pixel, and the first common electrode of the first sub-pixel and the second common electrode of the second sub-pixel are not connected. The electronic paper display panel further includes transparent electrodes, which are connected to an AC voltage. Parasitic capacitance is formed between the transparent electrode and the second pixel electrode; When the AC voltage on the transparent electrode changes and affects the voltage of the second pixel electrode, the first pixel electrode of the first sub-pixel is connected to the second pixel electrode of the second sub-pixel. The charge stored in the storage capacitor of the first sub-pixel will replenish the voltage of the second pixel electrode of the second sub-pixel through the first pixel electrode, thereby improving the display effect of the electronic paper display panel.

2. The electronic paper display panel according to claim 1, characterized in that, Each row of pixel units is connected to and driven by the two scan lines on either side of it.

3. The electronic paper display panel according to claim 1, characterized in that, Each column of pixel units is connected to and driven by the two data lines on its two sides.

4. The electronic paper display panel according to claim 3, characterized in that, A data line is provided between two adjacent columns of pixel units, and the two adjacent columns of pixel units share the data line; along the extension direction of the scan line, the two sub-pixels in two adjacent pixel units that share the data line are driven by different scan lines, and the sub-pixels are the first sub-pixel or the second sub-pixel.

5. The electronic paper display panel according to claim 1, characterized in that, The first sub-pixel includes: a first switching module and a first pixel electrode; the second sub-pixel includes: a second switching module and a second pixel electrode; Both the first switch module and the second switch module include a first terminal, a second terminal, and a control terminal. The first terminal of the first switch module is connected to a first data line, and the second terminal of the first switch module is connected to the first pixel electrode. The first terminal of the second switch module is connected to a second data line, and the second terminal of the second switch module is connected to the second pixel electrode. The control terminals of the first switch module and the second switch module are connected to different scan lines. The first switch module and the second switch module are used to turn on or off in response to the scan signal on the corresponding scan line.

6. The electronic paper display panel according to claim 5, characterized in that, The first switching module includes a first transistor, and the second switching module includes a second transistor. The gate of the first transistor is the control terminal of the first switching module, the first electrode of the first transistor is the first terminal of the first switching module, and the second electrode of the first transistor is the second terminal of the first switching module. The gate of the second transistor is the control terminal of the second switching module, the first electrode of the second transistor is the first terminal of the second switching module, and the second electrode of the second transistor is the second terminal of the second switching module.

7. The electronic paper display panel according to claim 6, characterized in that, The first sub-pixel further includes a first storage capacitor, and the second sub-pixel further includes a second storage capacitor; The first end of the first storage capacitor is connected to the second electrode of the first transistor, and the second end of the first storage capacitor is connected to the first common electrode; the first end of the second storage capacitor is connected to the second electrode of the second transistor, and the second end of the second storage capacitor is connected to the second common electrode; wherein, both the first common electrode and the second common electrode are connected to a DC voltage.

8. A display device, characterized in that, Includes the electronic paper display panel as described in any one of claims 1-7.

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