Electronic paper display and driving method

Abstract

The invention discloses an electronic paper display and a driving method, the electronic paper display comprises an array substrate, an opposed substrate and an ink capsule, a first electrode layer is arranged on one side, facing the ink capsule, of the opposed substrate, and the first electrode layer comprises a plurality of rectangular electrode blocks distributed in an array; the plurality of rectangular electrode blocks comprise first rectangular electrode blocks and second rectangular electrode blocks, the opposed substrate is provided with a plurality of first touch wires and a plurality of second touch wires, each first touch wire is formed by mutually connecting the plurality of first rectangular electrode blocks, and each second touch wire is formed by mutually connecting the plurality of second rectangular electrode blocks. Common voltage signals are applied to all rectangular electrode blocks in a first electrode layer in a display time period, so that the first electrode layer is used as a common electrode; in the touch control time period, one of the first touch control wire and the second touch control wire applies a touch control driving signal, and the other one applies a touch control sensing signal, so that the first electrode layer is used as a touch control electrode.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to an electronic paper display and its driving method. Background Technology

[0002] Display panels offer advantages such as thinness, durability, and low power consumption, which are energy-efficient and environmentally friendly. However, they require a backlight, resulting in a thicker module and higher cost. Electronic paper displays (reflective displays) have emerged as a solution to meet the needs of the general public. Unlike LCD displays, which require a backlight, electronic paper displays can use external light sources to display images. Therefore, even in strong sunlight, the information on the electronic paper remains clearly visible without viewing angle issues. Furthermore, due to their energy efficiency, high reflectivity, and high contrast ratio, electronic paper displays are now widely used in e-readers (such as e-books and e-newspapers) and other electronic components (such as price tags).

[0003] Existing electronic paper displays typically employ technologies such as E-Ink microcapsule technology (microcapsule electronic ink technology), SiPix microcup technology (microcup electrophoretic display technology), Bridgestone electronic liquid powder technology, Cholesteric Liquid Crystal Display (CLCD) technology, microelectromechanical systems (MEMS) technology, or electrowetting technology. However, existing electronic paper display technologies are less mature than liquid crystal display technologies, resulting in lower mass production efficiency and higher manufacturing costs. Furthermore, because existing electronic paper displays control the image by creating a vertical electric field between pixel electrodes and a common electrode, they typically cannot implement in-cell touch functionality to avoid affecting normal image display. This means that touch electrodes cannot be placed within the electronic paper display itself. If the touch electrodes were placed within the electronic paper display, they would interfere with the pixel electrodes and the common electrode, either resulting in a lack of touch functionality or poor image quality. Therefore, existing electronic paper displays typically use an on-cell touch method. This on-cell touch method has a complex process, high cost, and thicker casing, which is not conducive to the development of thinner and lighter designs. In addition, it will lose 5% of the light transmittance, reducing the display brightness of the electronic paper display. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the present invention aims to provide an electronic paper display and driving method to solve the problems of high cost and low light transmittance in the existing electronic paper display using an embedded touch method.

[0005] The objective of this invention is achieved through the following technical solution: This invention provides an electronic paper display, comprising an array substrate, a counter substrate disposed opposite to the array substrate, and ink capsules located between the array substrate and the counter substrate. All ink capsules contain black and white particles of opposite polarity. The array substrate has a plurality of pixel electrodes arranged in an array. The counter substrate has a first electrode layer on the side facing the ink capsules. The first electrode layer includes a plurality of rectangular electrode blocks arranged in an array, among which there are first rectangular electrode blocks and second rectangular electrode blocks. The counter substrate has a plurality of first touch traces and a plurality of second touch traces. Each first touch trace is formed by interconnecting a plurality of first rectangular electrode blocks, and each second touch trace is formed by interconnecting a plurality of second rectangular electrode blocks. The extension directions of the first and second touch traces intersect each other. One of the first and second touch traces is a touch driving electrode, and the other is a touch sensing electrode. During the display period, a common voltage signal is applied to all the rectangular electrode blocks in the first electrode layer; during the touch period, a touch driving signal is applied to one of the first touch trace and the second touch trace, and a touch sensing signal is applied to the other.

[0006] Furthermore, any two adjacent first rectangular electrode blocks are spaced apart by a second rectangular electrode block, and any two adjacent second rectangular electrode blocks are spaced apart by a first rectangular electrode block.

[0007] Furthermore, the rectangular electrode blocks in odd-numbered rows and odd-numbered columns are all the first rectangular electrode blocks, and the rectangular electrode blocks in odd-numbered rows and even-numbered columns are all the second rectangular electrode blocks; The rectangular electrode blocks in even-numbered rows and odd-numbered columns are all the second rectangular electrode blocks, and the rectangular electrode blocks in even-numbered rows and even-numbered columns are all the first rectangular electrode blocks.

[0008] Furthermore, the opposing substrate is provided with a second electrode layer located on a different layer than the first electrode layer. The second electrode layer includes a plurality of bridging electrodes, and the first electrode layer includes a plurality of connecting electrodes. The plurality of first rectangular electrode blocks in each first touch trace are connected together by the connecting electrode, and the plurality of second rectangular electrode blocks in each second touch trace are connected together by the bridging electrode; or, the plurality of first rectangular electrode blocks in each first touch trace are connected together by the bridging electrode, and the plurality of second rectangular electrode blocks in each second touch trace are connected together by the connecting electrode.

[0009] Furthermore, the array substrate is provided with multiple scan lines, multiple data lines and multiple thin-film transistors. The multiple scan lines and multiple data lines are mutually insulated and cross each other to form multiple pixel units. Each pixel unit is provided with a thin-film transistor and a pixel electrode. The pixel electrode is electrically connected to the corresponding scan line and the data line through the thin-film transistor. The gaps between the rectangular electrode blocks correspond to the scan lines and the data lines.

[0010] Furthermore, each of the rectangular electrode blocks corresponds to a plurality of the pixel units.

[0011] Furthermore, the electronic paper display has a display area and a non-display area located around the periphery of the display area. A first bonding area and a second bonding area are provided on the same side of the non-display area. The edge of the opposing substrate is provided with a first protrusion and a first notch. The first bonding area is located at the first protrusion. The edge of the array substrate is provided with a second protrusion and a second notch. The second bonding area is located at the second protrusion. The second protrusion corresponds to the first notch, and the first protrusion corresponds to the second notch. The projections of the first protrusion and the second protrusion on the electronic paper display are completely offset.

[0012] Furthermore, the first protrusion is located between the two first notches, and the second notch is located between the two second protrusions; or, the first protrusion and the first notch are distributed left and right on the edge of the opposing substrate, and the second notch and the second protrusion are distributed left and right on the edge of the array substrate.

[0013] Furthermore, the opposing substrate is provided with a color resist layer and a black matrix that separates the multiple color resist layers from each other. The black matrix and the color resist layer are located on the side of the first electrode layer facing the ink capsule, or the black matrix and the color resist layer are located on the side of the first electrode layer facing the opposing substrate.

[0014] This application also provides a driving method for an electronic paper display, used to drive the electronic paper display as described above, the driving method comprising: During the display period, a common voltage signal is applied to all the rectangular electrode blocks in the first electrode layer to form a storage capacitor with the pixel electrode; During the touch control period, a touch driving signal is applied to one of the first touch trace and the second touch trace, and a touch sensing signal is applied to the other, so as to form a touch capacitance between the first touch trace and the second touch trace.

[0015] The beneficial effects of this invention are as follows: By providing a first electrode layer on the side of the opposing substrate facing the ink capsule, the first electrode layer includes multiple rectangular electrode blocks arranged in an array, among which are first rectangular electrode blocks and second rectangular electrode blocks. The opposing substrate has multiple first touch traces and multiple second touch traces. Each first touch trace is formed by interconnecting multiple first rectangular electrode blocks, and each second touch trace is formed by interconnecting multiple second rectangular electrode blocks. Furthermore, during the display period, all rectangular electrode blocks in the first electrode layer are subjected to a common voltage signal, making the first electrode layer function as a common electrode. During the touch period, one of the first touch traces and the second touch traces is subjected to a touch driving signal, and the other is subjected to a touch sensing signal, making the first electrode layer function as a touch electrode. Therefore, the first electrode layer in this application can be used as both a common electrode and a touch electrode, which not only reduces manufacturing costs but also improves light transmittance. Moreover, the first electrode layer is located on the side of the opposing substrate facing the ink capsule, realizing an in-cell touch mode without affecting the normal display of the screen. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electronic paper display in its initial state according to Embodiment 1 of the present invention.

[0017] Figure 2 This is a schematic diagram of the pixel circuit on the array substrate in Embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the planar structure of the color resist arrangement on the opposing substrate in Embodiment 1 of the present invention.

[0019] Figure 4 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 1 of the present invention.

[0020] Figure 5 This is a schematic diagram of the planar structure of the first touch trace on the opposing substrate in Embodiment 1 of the present invention.

[0021] Figure 6 This is a schematic diagram of the planar structure of the second touch trace on the opposing substrate in Embodiment 1 of the present invention.

[0022] Figure 7 This is a schematic diagram of the planar structure of the opposing substrate in Embodiment 1 of the present invention.

[0023] Figure 8 This is a schematic diagram of the planar structure of the array substrate in Embodiment 1 of the present invention.

[0024] Figure 9 This is a schematic diagram of the planar structure of the electronic paper display in Embodiment 1 of the present invention.

[0025] Figure 10 This is a schematic diagram of the electronic paper display structure in Embodiment 1 of the present invention.

[0026] Figure 11 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 2 of the present invention.

[0027] Figure 12 This is a schematic diagram of the planar structure of the opposing substrate in Embodiment 2 of the present invention.

[0028] Figure 13 This is a schematic diagram of the planar structure of the array substrate in Embodiment 2 of the present invention.

[0029] Figure 14 This is a schematic diagram of the planar structure of the electronic paper display in Embodiment 2 of the present invention.

[0030] Figure 15 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 3 of the present invention.

[0031] Figure 16 This is a schematic diagram of the planar structure of the first touch trace on the opposing substrate in Embodiment 3 of the present invention.

[0032] Figure 17 This is a schematic diagram of the planar structure of the second touch trace on the opposing substrate in Embodiment 3 of the present invention.

[0033] Figure 18 This is a schematic diagram of the electronic paper display in its initial state in Embodiment 4 of the present invention. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed explanation of the specific implementation methods, structures, features, and effects of the electronic paper display and driving method proposed according to the present invention: [Example 1] Figure 1 This is a schematic diagram of the electronic paper display in its initial state according to Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the pixel circuit on the array substrate in Embodiment 1 of the present invention. Figure 3 This is a schematic diagram of the planar structure of the color resist arrangement on the opposing substrate in Embodiment 1 of the present invention. Figure 4 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 1 of the present invention. Figure 5 This is a schematic diagram of the planar structure of the first touch trace on the opposing substrate in Embodiment 1 of the present invention. Figure 6 This is a schematic diagram of the planar structure of the second touch trace on the opposing substrate in Embodiment 1 of the present invention.

[0035] like Figures 1 to 6 As shown in Embodiment 1 of the present invention, an electronic paper display includes an array substrate 20, a counter substrate 10 disposed opposite to the array substrate 20, and ink capsules 30 located between the array substrate 20 and the counter substrate 10. All ink capsules 30 contain black particles 31 and white particles 32 of opposite polarities. The counter substrate 10 is located on the side of the electronic paper display closer to the external environment (i.e., the side touched by the user's finger when using the electronic paper display), and the array substrate 20 is located on the side of the electronic paper display farther from the external environment. By providing electric fields of different directions to the ink capsules 30, the black particles 31 and white particles 32 can move in corresponding directions. For example, black particles 31 are negatively charged, and white particles 32 are positively charged, causing white particles 32 to move in the direction of the electric field, and black particles 31 to move in the opposite direction of the electric field. If an upward electric field is provided, white particles 32 move upward, and black particles 31 move downward; if a downward electric field is provided, white particles 32 move downward, and black particles 31 move upward. Of course, it is also possible that the black particle 31 is positively charged and the white particle 32 is negatively charged, so that the black particle 31 moves in the direction of the electric field and the white particle 32 moves in the opposite direction of the electric field.

[0036] like Figure 2 As shown, the array substrate 20 has multiple scan lines 1, multiple data lines 2, and multiple thin-film transistors 3. The scan lines 1 and data lines 2 are mutually insulated and intersecting to form multiple pixel units P arranged in an array. Each pixel unit P has a thin-film transistor 3 and a pixel electrode 21. The pixel electrode 21 is electrically connected to the corresponding scan line 1 and data line 2 through the thin-film transistor 3. The thin-film transistor 3 includes a gate, an active layer, a source, and a drain. The gate is located on the same layer as the scan line 1 and is electrically connected. The gate is isolated from the active layer by a gate insulating layer. The source is located on the same layer as the data line 2 and is electrically connected. The drain is electrically connected to the pixel electrode 21 through a contact hole.

[0037] A first electrode layer 13 is provided on the side of the opposing substrate 10 facing the ink capsule 30. For example... Figures 4 to 6As shown, the first electrode layer 13 includes a plurality of rectangular electrode blocks arranged in an array. These rectangular electrode blocks can be square or rectangular. Among the rectangular electrode blocks are first rectangular electrode blocks 131 and second rectangular electrode blocks 132. The opposing substrate 10 has a plurality of first touch traces X1 and a plurality of second touch traces X2. Each first touch trace X1 is formed by interconnecting a plurality of first rectangular electrode blocks 131, and each second touch trace X2 is formed by interconnecting a plurality of second rectangular electrode blocks 132. The extension directions of the first touch traces X1 and second touch traces X2 intersect each other. One of the first touch traces X1 and the second touch trace X2 is a touch driving electrode (TX), and the other is a touch sensing electrode (RX). For example, the first touch trace X1 can be a touch driving electrode, and the second touch trace X2 can be a touch sensing electrode; alternatively, the first touch trace X1 can be a touch sensing electrode, and the second touch trace X2 can be a touch driving electrode. During the display period, a common voltage signal is applied to all rectangular electrode blocks in the first electrode layer 13, so that a storage capacitor is formed between the pixel electrode 21 and the first electrode layer 13 when the screen is displayed; during the touch period, a touch driving signal is applied to one of the first touch trace X1 and the second touch trace X2, and a touch sensing signal is applied to the other, so that a touch capacitor is formed between the first touch trace X1 and the second touch trace X2 during the touch period.

[0038] During the display period, the direction of the electric field between the pixel electrode 21 and the first electrode layer 13 is controlled by controlling the voltage polarity on the pixel electrode 21, thereby controlling the ink capsule 30 to switch between a black state (light-absorbing state) and a white state (reflective state). For example, if a 0V common voltage is applied to the first electrode layer 13, and a positive voltage is applied to the pixel electrode 21, the direction of the electric field between the pixel electrode 21 and the first electrode layer 13 is towards the first electrode layer 13; if a negative voltage is applied to the pixel electrode 21, the direction of the electric field between the pixel electrode 21 and the first electrode layer 13 is towards the pixel electrode 21. Optionally, the pixel electrode 21 can be a reflective electrode with a reflective effect. For example, the pixel electrode 21 can be made of a metal with high reflectivity, such as aluminum or silver, thereby increasing the reflectivity of the electronic paper display.

[0039] Furthermore, a second rectangular electrode block 132 is spaced between any two adjacent first rectangular electrode blocks 131, and a first rectangular electrode block 131 is spaced between any two adjacent second rectangular electrode blocks 132, i.e., the first rectangular electrode blocks 131 and the second rectangular electrode blocks 132 are arranged in a mosaic pattern. In this embodiment, the rectangular electrode blocks in odd-numbered rows and odd-numbered columns are all first rectangular electrode blocks 131, and the rectangular electrode blocks in odd-numbered rows and even-numbered columns are all second rectangular electrode blocks 132; the rectangular electrode blocks in even-numbered rows and odd-numbered columns are all second rectangular electrode blocks 132, and the rectangular electrode blocks in even-numbered rows and even-numbered columns are all first rectangular electrode blocks 131. Of course, in another embodiment, the rectangular electrode blocks in odd-numbered rows and odd-numbered columns can also be all second rectangular electrode blocks 132, and the rectangular electrode blocks in odd-numbered rows and even-numbered columns can all be first rectangular electrode blocks 131; the rectangular electrode blocks in even-numbered rows and odd-numbered columns can all be first rectangular electrode blocks 131, and the rectangular electrode blocks in even-numbered rows and even-numbered columns can all be second rectangular electrode blocks 132.

[0040] In this embodiment, the first touch trace X1 has a broken line structure and extends along the row direction, while the second touch trace X2 has a broken line structure and extends along the column direction. Of course, in other embodiments, the first touch trace X1 can also have a broken line structure and extend along the column direction, while the second touch trace X2 can have a broken line structure and extend along the row direction.

[0041] Since both the first touch trace X1 and the second touch trace X2 are formed by interconnecting rectangular electrode blocks of the first electrode layer 13, and insulation is required between the first touch trace X1 and the second touch trace X2, a second electrode layer 14 is also provided on the opposing substrate 10, located on a different layer than the first electrode layer 13. Both the first electrode layer 13 and the second electrode layer 14 are located on the side of the opposing substrate 10 facing the ink capsule 30, and are separated from each other by an insulating layer. The second electrode layer 14 includes multiple bridging electrodes 141, and the first electrode layer 13 includes multiple connecting electrodes 133. In this embodiment, as... Figure 5 and Figure 6 As shown, multiple first rectangular electrode blocks 131 in each first touch line X1 are connected together by connecting electrodes 133, and multiple second rectangular electrode blocks 132 in each second touch line X2 are connected together by bridging electrodes 141. The insulating layer has contact holes at the bridging electrodes 141, and the second rectangular electrode blocks 132 are connected to the bridging electrodes 141 through the contact holes.

[0042] Optionally, the first electrode layer 13 is located on the side of the second electrode layer 14 facing the ink capsule 30, so that the first electrode layer 13 can be closer to the ink capsule 30, which facilitates the formation of a vertical electric field between it and the pixel electrode 21. Of course, in other embodiments, the first electrode layer 13 may also be located on the side of the second electrode layer 14 away from the ink capsule 30.

[0043] In this embodiment, each rectangular electrode block corresponds to multiple pixel units P, meaning that the projection of each rectangular electrode block onto the array substrate 20 covers multiple complete pixel electrodes 21. A gap exists between any two adjacent rectangular electrode blocks, corresponding to scan lines 1 and data lines 2. This means the gap between two rectangular electrode blocks is positioned at scan lines 1 and 2, preventing pixel electrodes 21 from corresponding to the gap. This ensures a relatively uniform vertical electric field is formed between the pixel electrodes 21 and the rectangular electrode blocks, improving the display effect. If a pixel electrode 21 corresponds to a gap, a vertical electric field will not be formed between the pixel electrode 21 in the gap area and the rectangular electrode block, affecting the movement of black particles 31 and white particles 32 in the ink capsule 30 in the gap area, leading to uneven display. Optionally, the width of the gap between two rectangular electrode blocks is smaller than the line width of scan line 1 and smaller than the line width of data line 2. The size of the rectangular electrode blocks is 4mm-5mm, and the gap between the rectangular electrode blocks is 3um-8um. For example, the size of the pixel unit P is 150um*150um, and the size of the rectangular electrode block is 4050um*4050um. Each rectangular electrode block can correspond to 27*27 pixel units P, and the gap between the rectangular electrode blocks can correspond to the scan line 1 and data line 2 between the pixel units P.

[0044] like Figure 3 As shown, the opposing substrate 10 is a color filter substrate, and a color resist layer 12 and a black matrix 11 spacing the multiple color resist layers 12 are provided on the opposing substrate 10. The multiple pixel units P include red pixel units, green pixel units, and blue pixel units. The color resist layer 12 includes a red color resist layer 12r, a green color resist layer 12g, and a blue color resist layer 12b. The red color resist layer 12r corresponds to the red pixel unit, the green color resist layer 12g corresponds to the green pixel unit, and the blue color resist layer 12b corresponds to the blue pixel unit. This allows the electronic paper display to achieve the display of various colors based on the color mixing principle of red / green / blue light. Specifically, a column of green pixel units, a column of blue pixel units, and a column of red pixel units are arranged alternately along the row direction. The peak transmittance of the red color resist layer 12r is around 650nm; the peak transmittance of the green color resist layer 12g is around 550nm, and the transmittance is above 20% in the wavelength range of 450nm to 620nm; the peak transmittance of the blue color resist layer 12b is around 460nm.

[0045] In this embodiment, the black matrix 11 and the color resist layer 12 are located on the side of the first electrode layer 13 facing the ink capsule 30, thereby bringing the first electrode layer 13 closer to the external environment to increase touch sensitivity. That is, on the side of the opposing substrate 10 facing the ink capsule 30, the second electrode layer 14 is fabricated first, then the first electrode layer 13 is fabricated, and finally the black matrix 11 and the color resist layer 12 are fabricated.

[0046] Figure 7 This is a schematic diagram of the planar structure of the opposing substrate in Embodiment 1 of the present invention. Figure 8 This is a schematic diagram of the planar structure of the array substrate in Embodiment 1 of the present invention. Figure 9 This is a schematic diagram of the planar structure of the electronic paper display in Embodiment 1 of the present invention. Figures 7 to 9 As shown, the electronic paper display has a display area 110 and a non-display area 120 located around the periphery of the display area 110. A first bonding area 130 and a second bonding area 140 are provided on the same side of the non-display area 120. The edge of the opposing substrate 10 is provided with a first protrusion 101 and a first notch 102. The first bonding area 130 is located at the first protrusion 101. The edge of the array substrate 20 is provided with a second protrusion 201 and a second notch 202. The second bonding area 140 is located at the second protrusion 201. The second protrusion 201 corresponds to the first notch 102, and the first protrusion 101 corresponds to the second notch 202. The projections of the first protrusion 101 and the second protrusion 201 on the electronic paper display are completely offset, thereby facilitating the bonding of the first bonding area 130 and the second bonding area 140. The first bonding area 130 is used to connect with the first touch line X1 and the second touch line X2 on the opposing substrate 10, so as to facilitate the connection of the first touch line X1 and the second touch line X2 with the external processing chip; the second bonding area 140 is used to connect with the gate driving circuit and the source driving circuit of the array substrate 20, so as to facilitate the connection of the gate driving circuit and the source driving circuit with the external processing chip.

[0047] In this embodiment, the first protrusion 101 is located between two first notches 102, and the second notch 202 is located between two second protrusions 201. That is, the array substrate 20 is bonded with two FPCs, and the opposing substrate 10 is bonded with one FPC.

[0048] The opposing substrate 10 and the array substrate 20 can be made of transparent substrates such as glass, acrylic, and polycarbonate. The first electrode layer 13, the second electrode layer 14, and the pixel electrode 21 can be made of transparent electrodes such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0049] This application also provides a control method for an electronic paper display, used to control the electronic paper display as described above. The control method includes: During the display period, a common voltage signal is applied to all rectangular electrode blocks in the first electrode layer 13 to form a storage capacitor with the pixel electrode 21. During the touch period, a touch driving signal is applied to one of the first touch trace X1 and the second touch trace X2, and a touch sensing signal is applied to the other, so that a touch capacitor is formed between the first touch trace X1 and the second touch trace X2.

[0050] Each frame of the screen refresh includes a display period and a touch period, which alternate to ensure that the electronic paper display has a good touch effect.

[0051] Figure 10 This is a schematic diagram of the electronic paper display structure in Embodiment 1 of the present invention. The explanation uses the example of black ink particles 31 being negatively charged and white ink particles 32 being positively charged. Figure 10 As shown, during the display period, for the bright pixel unit P, a common voltage of 0V is applied to all rectangular electrode blocks in the first electrode layer 13, and a positive voltage (e.g., +10V) is applied to the pixel electrode 21. The electric field direction between the pixel electrode 21 and the first electrode layer 13 is upward, so the black ink particles 31 move downward and the white ink particles 32 move upward and concentrate on the side close to the first electrode layer 13. The light incident on the electronic ink screen 10 is reflected back by the white ink particles 32, thereby making the corresponding pixel unit P appear bright. For a dark pixel unit P, a common voltage of 0V is applied to all rectangular electrode blocks in the first electrode layer 13, and a negative voltage (e.g., -10V) is applied to the pixel electrode 21. The electric field between the pixel electrode 21 and the first electrode layer 13 then points downwards. Consequently, white ink particles 32 move downwards, and black ink particles 31 move upwards and concentrate near the first electrode layer 13. Light incident on the electronic ink screen 10 is absorbed by the black ink particles 31, making the corresponding pixel unit P appear black. Furthermore, by combining bright and dark pixel units P, the corresponding pattern can be displayed using ambient light.

[0052] [Example 2] Figure 11 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 2 of the present invention. Figure 12 This is a schematic diagram of the planar structure of the opposing substrate in Embodiment 2 of the present invention. Figure 13 This is a schematic diagram of the planar structure of the array substrate in Embodiment 2 of the present invention. Figure 14 This is a schematic diagram of the planar structure of the electronic paper display in Embodiment 2 of the present invention. Figures 11 to 14 As shown, the electronic paper display and driving method provided in Embodiment 2 of the present invention are the same as those in Embodiment 1. Figures 1 to 10 The electronic paper display and driving method are basically the same as those in other electronic paper displays, with the following differences: In this embodiment, the first protrusion 101 and the first notch 102 are distributed left and right on the edge of the opposing substrate 10, and the second notch 202 and the second protrusion 201 are distributed left and right on the edge of the array substrate 20. That is, in this embodiment, the array substrate 20 and the opposing substrate 10 are both bonded by an FPC.

[0053] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0054] [Example 3] Figure 15 This is a schematic diagram of the planar structure of the touch traces on the opposing substrate in Embodiment 3 of the present invention. Figure 16 This is a schematic diagram of the planar structure of the first touch trace on the opposing substrate in Embodiment 3 of the present invention. Figure 17 This is a schematic diagram of the planar structure of the second touch trace on the opposing substrate in Embodiment 3 of the present invention. Figures 15 to 17 As shown, the electronic paper display and driving method provided in Embodiment 3 of the present invention are the same as those in Embodiment 1. Figures 1 to 10 Example 2 Figures 11 to 14 The electronic paper display and driving method are basically the same as those in other electronic paper displays, with the following differences: In this embodiment, a second electrode layer 14, located on a different layer than the first electrode layer 13, is also provided on the opposing substrate 10. Both the first electrode layer 13 and the second electrode layer 14 are located on the side of the opposing substrate 10 facing the ink capsule 30, and are separated from each other by an insulating layer. The second electrode layer 14 includes a plurality of bridging electrodes 141, and the first electrode layer 13 includes a plurality of connecting electrodes 133. The plurality of first rectangular electrode blocks 131 in each first touch line X1 are connected together by the bridging electrodes 141, and the plurality of second rectangular electrode blocks 132 in each second touch line X2 are connected together by the connecting electrodes 133. The insulating layer has contact holes at the bridging electrodes 141, and the first rectangular electrode blocks 131 are connected to the bridging electrodes 141 through the contact holes.

[0055] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1 and Embodiment 2, and will not be repeated here.

[0056] [Example 4] Figure 18 This is a schematic diagram of the electronic paper display in its initial state according to Embodiment 4 of the present invention. Figure 18 As shown, the electronic paper display and driving method provided in Embodiment 4 of the present invention are the same as those in Embodiment 1. Figures 1 to 10Example 2 Figures 11 to 14 Example 3 Figures 15 to 17 The electronic paper display and driving method are basically the same as those in other electronic paper displays, with the following differences: In this embodiment, the black matrix 11 and the color resist layer 12 can also be located on the side of the first electrode layer 13 facing the opposing substrate 10, that is, on the side of the opposing substrate 10 facing the ink capsule 30. The black matrix 11 and the color resist layer 12 are fabricated first, then the second electrode layer 14 is fabricated, and finally the first electrode layer 13 is fabricated. This makes the black matrix 11 and the color resist layer 12 closer to the external environment, thereby increasing the color saturation of the reflective display.

[0057] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, Embodiment 2, and Embodiment 3, and will not be repeated here.

[0058] In this document, the directional terms such as up, down, left, right, front, and back are defined according to the position of the structures in the accompanying drawings and the relative positions of the structures, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein are only used for distinction in name and are not used to limit the number or order.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present invention, which are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. An electronic paper display, characterized in that, The system includes an array substrate (20), a counter substrate (10) disposed opposite to the array substrate (20), and ink capsules (30) located between the array substrate (20) and the counter substrate (10). All ink capsules (30) contain black particles (31) and white particles (32) of opposite polarities. The array substrate (20) has a plurality of pixel electrodes (21) arranged in an array. The counter substrate (10) has a first electrode layer (13) on the side facing the ink capsules (30). The first electrode layer (13) includes a plurality of rectangular electrode blocks arranged in an array, and each of the rectangular electrode blocks has a first rectangular... The opposing substrate (10) has multiple first touch lines (X1) and multiple second touch lines (X2), each first touch line (X1) is formed by connecting multiple first rectangular electrode blocks (131) to each other, and each second touch line (X2) is formed by connecting multiple second rectangular electrode blocks (132) to each other. The extension directions of the first touch lines (X1) and the second touch lines (X2) intersect each other. One of the first touch lines (X1) and the second touch lines (X2) is a touch driving electrode, and the other is a touch sensing electrode. During the display period, a common voltage signal is applied to all the rectangular electrode blocks in the first electrode layer (13); during the touch period, a touch driving signal is applied to one of the first touch trace (X1) and the second touch trace (X2), and a touch sensing signal is applied to the other.

2. The electronic paper display according to claim 1, characterized in that, A second rectangular electrode block (132) is spaced between any two adjacent first rectangular electrode blocks (131), and a first rectangular electrode block (131) is spaced between any two adjacent second rectangular electrode blocks (132).

3. The electronic paper display according to claim 2, characterized in that, The rectangular electrode blocks in odd-numbered rows and odd-numbered columns are all the first rectangular electrode blocks (131), and the rectangular electrode blocks in odd-numbered rows and even-numbered columns are all the second rectangular electrode blocks (132). The rectangular electrode blocks in even-numbered rows and odd-numbered columns are all the second rectangular electrode blocks (132), and the rectangular electrode blocks in even-numbered rows and even-numbered columns are all the first rectangular electrode blocks (131).

4. The electronic paper display according to claim 1, characterized in that, The opposing substrate (10) is provided with a second electrode layer (14) located on a different layer from the first electrode layer (13). The second electrode layer (14) includes a plurality of bridging electrodes (141), and the first electrode layer (13) includes a plurality of connecting electrodes (133). The plurality of first rectangular electrode blocks (131) in each first touch line (X1) are connected together by the connecting electrode (133), and the plurality of second rectangular electrode blocks (132) in each second touch line (X2) are connected together by the bridging electrode (141); or, the plurality of first rectangular electrode blocks (131) in each first touch line (X1) are connected together by the bridging electrode (141), and the plurality of second rectangular electrode blocks (132) in each second touch line (X2) are connected together by the connecting electrode (133).

5. The electronic paper display according to claim 1, characterized in that, The array substrate (20) is provided with multiple scan lines (1), multiple data lines (2) and multiple thin film transistors (3). The multiple scan lines (1) and multiple data lines (2) are mutually insulated and cross each other to form multiple pixel units (P). Each pixel unit (P) is provided with the thin film transistor (3) and the pixel electrode (21). The pixel electrode (21) is electrically connected to the corresponding scan line (1) and the data line (2) through the thin film transistor (3). The gap between the rectangular electrode blocks corresponds to the scan line (1) and the data line (2).

6. The electronic paper display according to claim 5, characterized in that, Each of the rectangular electrode blocks corresponds to a plurality of the pixel units (P).

7. The electronic paper display according to any one of claims 1-6, characterized in that, The electronic paper display has a display area (110) and a non-display area (120) located around the periphery of the display area (110). A first bonding area (130) and a second bonding area (140) are provided on the same side of the non-display area (120). A first protrusion (101) and a first notch (102) are provided on the edge of the opposing substrate (10). The first bonding area (130) is located at the first protrusion (101). A second protrusion (201) and a second notch (202) are provided on the edge of the array substrate (20). The second bonding area (140) is located at the second protrusion (201). The second protrusion (201) corresponds to the first notch (102). The first protrusion (101) corresponds to the second notch (202). The projections of the first protrusion (101) and the second protrusion (201) on the electronic paper display are completely offset.

8. The electronic paper display according to claim 7, characterized in that, The first protrusion (101) is located between the two first notches (102), and the second notch (202) is located between the two second protrusions (201); or, the first protrusion (101) and the first notch (102) are distributed left and right on the edge of the opposing substrate (10), and the second notch (202) and the second protrusion (201) are distributed left and right on the edge of the array substrate (20).

9. The electronic paper display according to any one of claims 1-6, characterized in that, The opposing substrate (10) is provided with a color resist layer (12) and a black matrix (11) that separates multiple color resist layers (12) from each other; The black matrix (11) and the color resist layer (12) are located on the side of the first electrode layer (13) facing the ink capsule (30), or the black matrix (11) and the color resist layer (12) are located on the side of the first electrode layer (13) facing the opposing substrate (10).

10. A driving method for an electronic paper display, characterized in that, The driving method for driving an electronic paper display as described in any one of claims 1-9 includes: During the display period, a common voltage signal is applied to all the rectangular electrode blocks in the first electrode layer (13) to form a storage capacitor with the pixel electrode (21); During the touch period, a touch driving signal is applied to one of the first touch trace (X1) and the second touch trace (X2), and a touch sensing signal is applied to the other, so as to form a touch capacitance between the first touch trace (X1) and the second touch trace (X2).

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