Electronic paper and its driving method

Abstract

This application discloses an electronic paper and its driving method, belonging to the field of display technology. The electronic paper includes: a first substrate and a second substrate disposed opposite to each other, and an electrophoresis unit located between the two. When a sub-pixel area in the electronic paper needs to display a color state, after at least two electrode blocks in this sub-pixel area are loaded with different potentials, black particles and white particles in the electrophoresis unit can converge towards the side closer to the first substrate. The converged black particles and white particles can be blocked by a black matrix, allowing the color resist block to emit incident ambient light, and the color of the reflected light is consistent with the color of the color resist block, thereby enabling the electronic paper to perform color display and effectively improving the display effect of the electronic paper.

Description

Technical Field

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

[0002] Electronic paper is a new type of display device, mainly used in devices such as electronic tags, billboards, and e-readers. The display effect of electronic paper is close to that of natural paper, which can reduce eye strain during reading.

[0003] Currently, electronic paper typically includes: a first substrate and a second substrate disposed opposite to each other, and an electrophoresis unit located between the two. The electrophoresis unit has multiple particles (e.g., black particles and white particles), and the first substrate and the second substrate can drive the black particles and white particles in the electrophoresis unit to move in a specified direction so that the electronic paper can display the corresponding image.

[0004] However, electronic paper currently cannot display in color, resulting in poor display quality. Summary of the Invention

[0005] This application provides an electronic paper and its driving method. It can solve the problem of poor display quality of electronic paper in the prior art. The technical solution is as follows:

[0006] On one hand, an electronic paper is provided, comprising: a first substrate and a second substrate disposed opposite to each other, and a plurality of electrophoretic units located between the first substrate and the second substrate, the electrophoretic units having a plurality of particles;

[0007] The first substrate includes: a first substrate, and a plurality of color resist blocks and a plurality of pixel electrodes located on one side of the first substrate. The plurality of pixel electrodes and the plurality of electrophoretic units correspond one-to-one, and also correspond one-to-one with the plurality of color resist blocks. Each pixel electrode, its corresponding electrophoretic unit, and its corresponding color resist block are all located in the same sub-pixel region in the electronic paper. The pixel electrode in each sub-pixel region includes: a plurality of electrode blocks that are separated from each other.

[0008] The second substrate includes: a second substrate, and a common electrode and a black matrix located on one side of the second substrate. The black matrix has a plurality of light-transmitting holes that correspond one-to-one with the plurality of color resist blocks. The orthographic projection of the light-transmitting hole on the first substrate is located within the orthographic projection of the corresponding color resist block on the first substrate, and there is an overlapping area between the orthographic projection of the black matrix on the first substrate and the orthographic projection of the color resist block on the first substrate.

[0009] In this sub-pixel region, at least two electrode blocks are configured to be loaded with different potentials so that the particles in the electrophoretic unit of the sub-pixel region exhibit different aggregation forms.

[0010] Optionally, the orthographic projection of the black matrix onto the first substrate covers the orthographic projection of each corner of the color resist block onto the first substrate.

[0011] Optionally, when the orthographic projection of the sub-pixel region onto the first substrate is rectangular, the orthographic projection of the light-transmitting aperture onto the first substrate is hexagonal or octagonal.

[0012] Optionally, within the sub-pixel region, the plurality of electrode blocks of the pixel electrode are arranged in multiple rows and columns, and the plurality of electrode blocks in the pixel electrode include: a plurality of first electrode blocks and a plurality of second electrode blocks, at least a portion of the orthographic projection of the first electrode block on the first substrate is located within the orthographic projection of the light-transmitting aperture on the first substrate, and at least a portion of the orthographic projection of the second electrode block on the first substrate is located within the orthographic projection of the black matrix on the first substrate.

[0013] Optionally, the sub-pixel region has: a light-transmitting area and a light-shielding area located around the light-transmitting area, at least a portion of the first electrode block is located within the light-transmitting area, and at least a portion of the second electrode block is located within the light-shielding area;

[0014] When the first electrode block and the second electrode block in the sub-pixel region are loaded with different potentials, the particles in the electrophoresis unit converge toward the side closer to the second substrate and accumulate in the light-transmitting area to form at least two layers; or, the particles in the electrophoresis unit converge toward the side closer to the first substrate and are distributed in the light-shielding area.

[0015] Optionally, the plurality of particles includes: a plurality of white particles and a plurality of black particles;

[0016] When the sub-pixel region is in a completely white state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different first potentials so that the white particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers.

[0017] When the sub-pixel region is in a completely black state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different second potentials so that the black particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers.

[0018] When the sub-pixel region is in a colored state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different third potentials, so that the white particles and black particles in the electrophoresis unit converge towards the side closer to the first substrate and are distributed in the light-shielding area.

[0019] Optionally, the light-shielding area includes: a first sub-light-shielding area and a second sub-light-shielding area, and the plurality of second electrode blocks in the pixel electrode are divided into: a first electrode group corresponding to the first sub-light-shielding area and a second electrode group corresponding to the second sub-light-shielding area;

[0020] Wherein, when the sub-pixel region is in color, the polarity of the third potential loaded on each of the second electrode blocks in the first electrode group is opposite to the polarity of the third potential loaded on each of the second electrode blocks in the second electrode group, so that one of the black particles and the white particles are distributed in the first sub-shading area, and the other of the black particles and the white particles are distributed in the second sub-shading area.

[0021] Optionally, the plurality of first electrode blocks in the pixel electrode are divided into at least two third electrode groups, wherein the plurality of first electrode blocks distributed in one third electrode group are arranged in a ring, and each first electrode block in one third electrode group is used to apply the same potential.

[0022] Optionally, the first substrate further includes: a reflective layer located on the side of the color resist block near the first substrate, and a thin-film transistor electrically connected to the electrode block, wherein the orthographic projection of the reflective layer on the first substrate is located within the orthographic projection of the color resist block on the first substrate.

[0023] Optionally, the electronic paper further includes an insulating barrier located between the first substrate and the second substrate, the insulating barrier being used to divide the space between the first substrate and the second substrate into a plurality of sealed chambers, wherein the electrophoresis units are distributed in the sealed chambers.

[0024] On the other hand, a driving method for electronic paper is provided, applied to the aforementioned electronic paper, the method comprising:

[0025] Different potentials are applied to at least two electrode blocks in the sub-pixel region to cause the particles in the electrophoretic unit of the sub-pixel region to exhibit different aggregation forms.

[0026] Optionally, the sub-pixel region has: a light-transmitting area and a light-shielding area located around the light-transmitting area, wherein the light-transmitting area is the area in the sub-pixel region where the light-transmitting holes are distributed, and the light-shielding area is the area in the sub-pixel region where the black matrix is ​​distributed;

[0027] Applying different potentials to at least two electrode blocks in the sub-pixel region to cause particles within the electrophoretic unit of the sub-pixel region to exhibit different aggregation patterns includes:

[0028] Different potentials are applied to at least two electrode blocks in the sub-pixel region so that the particles in the electrophoresis unit converge toward the side closer to the second substrate and accumulate in the light-transmitting area to form at least two layers, or so that the particles in the electrophoresis unit converge toward the side closer to the first substrate and are distributed in the light-shielding area.

[0029] Optionally, the plurality of electrode blocks in the pixel electrode includes: a plurality of first electrode blocks and a plurality of second electrode blocks, wherein at least a portion of the first electrode blocks is located within the light-transmitting area, and at least a portion of the second electrode blocks is located within the light-shielding area; the plurality of particles includes: a plurality of white particles and a plurality of black particles;

[0030] When the sub-pixel region is in a completely white state, applying different potentials to at least two electrode blocks in the sub-pixel region includes:

[0031] Different first potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers.

[0032] When the sub-pixel region is in a completely black state, applying different potentials to at least two electrode blocks in the sub-pixel region includes:

[0033] Different second potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the black particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers.

[0034] When the sub-pixel region is in a colored state, applying different potentials to at least two electrode blocks in the sub-pixel region includes:

[0035] Different third potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles and black particles in the electrophoresis unit converge towards the side closer to the first substrate and are distributed in the light-shielding area.

[0036] The method further includes applying different potentials to at least two electrode blocks in the sub-pixel region while applying a common potential to the common electrode.

[0037] Optionally, the white particles are positively charged particles, and the black particles are negatively charged particles;

[0038] When the sub-pixel region is in a completely white state, the first potential applied to the first electrode block is greater than the first potential applied to the second electrode block, and the first potential is greater than 0;

[0039] When the sub-pixel region is completely black, the absolute value of the second potential applied to the first electrode block is greater than the absolute value of the second potential applied to the second electrode block, and the second potential is less than 0.

[0040] When the sub-pixel region is in color, the absolute value of the third potential applied to the first electrode block is less than the absolute value of the third potential applied to the second electrode block.

[0041] Optionally, the light-shielding area includes: a first sub-light-shielding area and a second sub-light-shielding area, and the plurality of second electrode blocks in the pixel electrode are divided into: a first electrode group corresponding to the first sub-light-shielding area and a second electrode group corresponding to the second sub-light-shielding area;

[0042] When the sub-pixel region is in color, the third potential loaded on each second electrode block in the first electrode group is less than 0, and the third potential loaded on each second electrode block in the second electrode group is greater than 0, so that the converged white particles are distributed in the first sub-shading area, and the converged black particles are distributed in the second sub-shading area.

[0043] The beneficial effects of the technical solutions provided in this application include at least the following:

[0044] An electronic paper includes a first substrate and a second substrate disposed opposite to each other, and an electrophoresis unit located between the two. When a sub-pixel region of the electronic paper needs to display a color state, after at least two electrode blocks in this sub-pixel region are applied with different potentials, black and white particles in the electrophoresis unit can converge towards the side closer to the first substrate. The converged black and white particles can be blocked by a black matrix, allowing the color resist block to emit incident ambient light, and the color of the reflected light matches the color of the color resist block, thus enabling the electronic paper to display in color. Furthermore, since the particles converged near the first substrate can be blocked by the black matrix when the sub-pixel region displays a color state, most of the light incident on the first substrate can be reflected by the color resist block, rather than by the particles. This ensures a better effect when the sub-pixel region displays a color state, thereby effectively improving the display effect of the electronic paper. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the film layer structure of electronic paper provided in an embodiment of this application;

[0047] Figure 2 yes Figure 1 The image shown depicts the effect of a sub-pixel region in the electronic paper being completely white.

[0048] Figure 3 yes Figure 1 The image shown depicts the effect of a sub-pixel region in the electronic paper being completely black.

[0049] Figure 4 yes Figure 1 The image shown depicts the effect of a sub-pixel region in electronic paper displaying a color state.

[0050] Figure 5 This is a top view of another type of electronic paper provided in this application embodiment;

[0051] Figure 6 This is a top view of yet another type of electronic paper provided in the embodiments of this application;

[0052] Figure 7 yes Figure 5 or Figure 6 A schematic diagram of the film structure of electronic paper is shown.

[0053] Figure 8 yes Figure 7 The image shown depicts the effect of a sub-pixel region in electronic paper displaying color.

[0054] Figure 9 yes Figure 7 The image shown depicts the effect of a sub-pixel region in the electronic paper being completely white.

[0055] Figure 10 yes Figure 7 The image shown depicts the effect of a sub-pixel region in the electronic paper being completely black. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0057] Please refer to Figure 1 , Figure 1This is a schematic diagram of the film structure of an electronic paper according to an embodiment of this application. The electronic paper 000 may include: a first substrate 100 and a second substrate 200 disposed opposite to each other, and a plurality of electrophoretic units 300 located between the first substrate 100 and the second substrate 200, wherein the electrophoretic unit 300 has a plurality of particles 301.

[0058] For example, the electronic paper 000 may further include an insulating barrier 400 located between the first substrate 100 and the second substrate 200. The insulating barrier 400 divides the space between the first substrate 100 and the second substrate 200 into multiple sealed chambers 400a, each of which may contain an electrophoresis unit 300. Here, the electrophoresis unit 300 may include an electrophoretic solution 302 located within the sealed chamber 400a, and multiple particles 301 dispersed within the electrophoretic solution 302. It should be noted that the electronic paper 000 may have multiple sub-pixel regions 000a, each of which may correspond one-to-one with a single sealed chamber 400a, and each sealed chamber 400a may be located within its corresponding sub-pixel region 000a.

[0059] In this application, the first substrate 100 in the electronic paper 000 may include: a first substrate 101, and a plurality of color resist blocks 103 and a plurality of pixel electrodes 102 located on one side of the first substrate 101. Here, both the pixel electrodes 102 and the color resist blocks 103 may be located on the side of the first substrate 101 closer to the second substrate 200, and the color resist blocks 103 are closer to the first substrate 101 than the pixel electrodes 102.

[0060] Each pixel electrode 102 can correspond one-to-one with a plurality of electrophoretic units 200 and one-to-one with a plurality of color resist blocks 103. Each pixel electrode 102, its corresponding electrophoretic unit 300, and its corresponding color resist block 103 can all be located within the same sub-pixel region 000a in the electronic paper 000, and each pixel electrode 102 within the sub-pixel region 000a can include a plurality of separately arranged electrode blocks 102a.

[0061] The second substrate 200 in the electronic paper 000 may include a second substrate 201, and a common electrode 202 and a black matrix 203 located on one side of the second substrate 201. Here, both the common electrode 202 and the black matrix 203 may be located on the side of the second substrate 201 closer to the first substrate 100, and the common electrode 202 is closer to the first substrate 101 than the black matrix 203.

[0062] The black matrix 203 can have multiple light-transmitting holes 203a, and each light-transmitting hole 203a can correspond one-to-one with multiple color resist blocks 103. The orthographic projection of each light-transmitting hole 203a on the first substrate 101 can be located within the orthographic projection of the corresponding color resist block 103 on the first substrate 101. Furthermore, the orthographic projection of the black matrix 203 on the first substrate 101 can overlap with the orthographic projection of the color resist block 103 on the first substrate 101. That is, each sub-pixel region 000a within the electronic paper 000 can have one light-transmitting hole 203a distributed within it, and the black matrix 203 can extend into the sub-pixel region 000a.

[0063] In this embodiment of the application, at least two electrode blocks 102a in the sub-pixel region 000a within the electronic paper 000 can be configured to be loaded with different potentials so that the particles 301 in the electrophoretic unit 300 within this sub-pixel region 000a exhibit different aggregation forms.

[0064] For example, the multiple particles 301 in the electrophoresis unit 300 may include multiple white particles 301a and multiple black particles 301b. Suppose a sub-pixel region 000a in the electronic paper 000 needs to appear entirely white, such as... Figure 2 As shown, Figure 2 yes Figure 1 The diagram shows the effect of a sub-pixel region in the electronic paper being completely white. After at least two electrode blocks 102a in this sub-pixel region 000a are applied with different potentials, the white particles 301a in the electrophoresis unit 300 can converge towards the side closer to the second substrate 200, and the converged white particles 301a can be distributed near the light-transmitting aperture 203a. In this way, ambient light incident on this sub-pixel region 000a can be reflected by the white particles 301a converged towards the side closer to the second substrate 200, allowing this sub-pixel region 000a to appear completely white.

[0065] Suppose that a certain sub-pixel region 000a in the electronic paper 000 needs to appear completely black, such as Figure 3 As shown, Figure 3 yes Figure 1 The diagram shows the effect of a sub-pixel region in the electronic paper being completely black. After at least two electrode blocks 102a in this sub-pixel region 000a are applied with different potentials, the black particles 301b in the electrophoresis unit 300 can converge towards the side closer to the second substrate 200, and the converged black particles 301b can be distributed near the light-transmitting aperture 203a. In this way, ambient light incident on this sub-pixel region 000a can be absorbed by the black particles 301b converged towards the side closer to the second substrate 200, allowing this sub-pixel region 000a to appear completely black.

[0066] Suppose that a certain sub-pixel region 000a in the electronic paper 000 needs to display a color state, such as Figure 3 As shown, Figure 4 yes Figure 1 The diagram shows the effect of a sub-pixel region in electronic paper displaying a color state. After at least two electrode blocks 102a in this sub-pixel region 000a are applied with different potentials, the black particles 301b and white particles 301b in the electrophoresis unit 300 can converge towards the side closer to the first substrate 100, and both the converged black particles 301b and white particles 301b can be blocked by the black matrix 203. In this way, ambient light incident on this sub-pixel region 000a, after passing through the light-transmitting aperture 203a and hitting the first substrate 100, can be reflected by the color resist block 103 in the first substrate 100, so that the color of the reflected light is consistent with the color resist block 103, thereby enabling this sub-pixel region 000a to display a color state.

[0067] For example, when the color resist 103 is red, the light reflected by the color resist 103 is red light; when the color resist 103 is green, the light reflected by the color resist 103 is green light; and when the color resist 103 is blue, the light reflected by the color resist 103 is blue light. This ensures that the electronic paper 000 can display in color, thus guaranteeing a good display effect.

[0068] Here, when the sub-pixel region 000a is in a colored state, the particles 301 that converge near the first substrate 100 can be blocked by the black matrix 203. Therefore, most of the light rays incident on the first substrate 100 can be reflected by the color resist block 103 instead of by the particles 301, thereby ensuring a better effect when the sub-pixel region 000a is in a colored state, and thus further improving the display effect of the electronic paper 000.

[0069] In summary, the electronic paper provided in this application includes: a first substrate and a second substrate disposed opposite to each other, and an electrophoresis unit located between the two. When a sub-pixel region in the electronic paper needs to display a color state, after at least two electrode blocks in this sub-pixel region are loaded with different potentials, black particles and white particles in the electrophoresis unit can converge towards the side closer to the first substrate. The converged black and white particles can be blocked by a black matrix, allowing the color resist block to emit ambient light, and the color of the reflected light matches the color of the color resist block, thus enabling the electronic paper to display in color. Furthermore, since the particles converged near the first substrate can be blocked by the black matrix when the sub-pixel region displays a color state, most of the light incident on the first substrate can be reflected by the color resist block, rather than by the particles. This ensures a better effect when the sub-pixel region displays a color state, thereby effectively improving the display effect of the electronic paper.

[0070] In this application, the common electrode 202 in the second substrate 200 is used to apply a common potential, for example, the common potential can be 0 volts. A potential is applied to a certain electrode block 102a in the pixel electrode 102, and this electrode block 102a can form a potential difference with the common electrode 202. Under the action of the potential difference, the particles 301 in the electrophoresis unit 300 can move in the electrophoretic solution 302.

[0071] In the embodiments of this application, such as Figure 5 As shown, Figure 5 This is a top view of another type of electronic paper provided in this application embodiment. The orthographic projection of the black matrix 203 in the second substrate 200 onto the first substrate 101 can cover the orthographic projection of each corner of the color resist block 103 onto the first substrate 101. In this case, the black matrix 203 can extend from the corner of the sub-pixel region 000a into the sub-pixel region 000a to ensure that the area of ​​light transmission in the sub-pixel region 000a is large, thereby ensuring that the actual aperture ratio (i.e., the ratio of the area of ​​light transmission in the sub-pixel region 000a to the area of ​​the sub-pixel region 000a) in each sub-pixel region 000a in the electronic paper 000 is large, thereby ensuring that the sub-pixel region 000a has a higher and better effect when displaying a color state.

[0072] For example, the orthographic projection of each sub-pixel region 000a in the electronic paper 000 onto the substrate 100 can be rectangular. If the shape of each corner covered by the black matrix 203 in the color resist block 103 is triangular, then the shape of the orthographic projection of the light-transmitting aperture 203a of the black matrix 203 onto the first substrate 101 can be varied. This application embodiment will be illustrated using the following two optional implementation methods as examples:

[0073] The first optional implementation method, such as Figure 5 As shown, the shape of the light-transmitting aperture 203a of the black matrix 203 on the first substrate 101 is hexagonal.

[0074] The second optional implementation method, such as Figure 6 As shown, Figure 6 This is a top view of another type of electronic paper provided in this application embodiment. The shape of the light-transmitting aperture 203a of the black matrix 203 projected onto the first substrate 101 is octagonal.

[0075] Here, when the orthographic projection of the light-transmitting aperture 203a of the black matrix 203 onto the first substrate 101 is hexagonal or octagonal, a large actual aperture ratio within the sub-pixel region 000a can be guaranteed. It should be noted that in other possible implementations, the orthographic projection of the light-transmitting aperture 203a onto the first substrate 101 can also be a decagon or dodecagon, etc. This application embodiment does not limit this.

[0076] In the embodiments of this application, such as Figure 5 and Figure 6 As shown, within each sub-pixel region 000a of the electronic paper 000, a plurality of electrode blocks 102a of the pixel electrode 102 can be arrayed in multiple rows and columns, and the plurality of electrode blocks 102a in the pixel electrode 102 may include: a plurality of first electrode blocks 1021 and a plurality of second electrode blocks 1022. Here, at least a portion of the orthographic projection of the first electrode block 1021 on the first substrate 101 may be located within the orthographic projection of the light-transmitting aperture 203a on the first substrate 101, and at least a portion of the orthographic projection of the second electrode block 1022 on the first substrate 101 may be located within the orthographic projection of the black matrix 203 on the first substrate 101.

[0077] In this case, when the electronic paper 000 distributes different potentials to the first electrode block 1021 and the second electrode block 1022, it can be ensured that the particles 301 in the electrophoresis unit 300 exhibit different aggregation forms.

[0078] It should be noted that within the same sub-pixel region 000a, most of the orthographic projections of the first electrode blocks 1021 on the first substrate 101 are located within the orthographic projection of the light-transmitting aperture 203a on the first substrate 101. A small portion of the orthographic projections of the first electrode blocks 1021 on the first substrate 101 are located within both the orthographic projection of the light-transmitting aperture 203a on the first substrate 101 and the orthographic projection of the black matrix 203 on the first substrate 101. However, the overlap area between the orthographic projections of this portion of the first electrode blocks 1021 on the first substrate 101 and the orthographic projection of the light-transmitting aperture 203a on the first substrate 101 is greater than the overlap area between the orthographic projection of the black matrix 203 on the first substrate 101. Similarly, most of the orthographic projections of the second electrode blocks 1022 on the first substrate 101 are located within the orthographic projection of the black matrix 203 on the first substrate 101. A small portion of the orthographic projections of the second electrode blocks 1022 on the first substrate 101 are located within both the orthographic projection of the black matrix 203 on the first substrate 101 and the orthographic projection of the light-transmitting aperture 203a on the first substrate 101. However, the overlap area between the orthographic projections of this portion of the second electrode blocks 1022 on the first substrate 101 and the orthographic projection of the black matrix 203 on the first substrate 101 is greater than the overlap area between this portion of the second electrode blocks 1022 and the orthographic projection of the light-transmitting aperture 203a on the first substrate 101.

[0079] In the embodiments of this application, such as Figure 7 As shown, Figure 7 yes Figure 5 or Figure 6 The diagram shows a schematic of the film structure of electronic paper. Each sub-pixel region 000a in the electronic paper 000 has a light-transmitting region 001 and a light-shielding region 002 located around the light-transmitting region 001. Here, the light-transmitting region 001 of the sub-pixel region 000a refers to the region in the sub-pixel region 000a where light-transmitting holes 203a are distributed, and the light-shielding region 002 of the sub-pixel region 000a refers to the region in the sub-pixel region 000a where black matrices 203 are distributed. At least a portion of the first electrode block 1021 of the pixel electrode 102 can be distributed within the light-transmitting region 001, and at least a portion of the second electrode block 1022 of the pixel electrode 102 can be distributed within the light-shielding region 002.

[0080] In this application, when the first electrode block 1021 and the second electrode block 1022 in the sub-pixel region 000 are loaded with different potentials, the particles 301 in the electrophoretic unit 300 in this sub-pixel region 000 can converge toward the side closer to the second substrate 102, and after the particles 301 converge, they can be deposited in the light-transmitting area 001 of this sub-pixel region 000 to form at least two layers; the particles 301 in the electrophoretic unit 300 in this sub-pixel region 000 can also converge toward the side closer to the first substrate 100, and after the particles 301 converge, they can be distributed in the light-shielding area 002 of this sub-pixel region 000.

[0081] It should be noted that, since the multiple particles 301 within the electrophoresis unit 300 include multiple white particles 301a and multiple black particles 301b, and the potentials applied to the first electrode block 2011 and the second electrode block 2022 are different when the sub-pixel region 000 presents different states, this application embodiment will be described using the following three cases as examples:

[0082] In the first scenario, when a sub-pixel region 000a in the electronic paper 000 is in color, such as... Figure 8 As shown, Figure 8 yes Figure 7 The diagram shows the effect of a sub-pixel region in the electronic paper displaying color. The first electrode block 1021 and the second electrode block 1022 within this sub-pixel region 000a can be configured to apply different third potentials, causing the white particles 301a and black particles 301b in the electrophoresis unit 300 within this sub-pixel region 000a to converge towards the side closer to the first substrate 100 and then distribute within the light-shielding area 002 of this sub-pixel region 000a. In this case, since the white particles 301a and black particles 301b in the electrophoresis unit 300 converge towards the side closer to the first substrate 100 and are mainly distributed within the light-shielding area 002 of this sub-pixel region 000a, both the white particles 301a and black particles 301b in the electrophoresis unit 300 can be blocked by the black matrix 203. In this way, when ambient light is incident on this sub-pixel region 000a, after passing through the light-transmitting aperture 203a and hitting the first substrate 100, some of the light can be reflected by the color resist block 103 instead of being reflected by the particles 301. The color of the light reflected by the color resist block 103 is consistent with the color of the color resist block 103, thus enabling this sub-pixel region 000a to present a better color state.

[0083] In this application, as Figure 5 and Figure 8As shown, the light-shielding area 002 in each sub-pixel region 000a may include: a first sub-light-shielding area 002a and a second sub-light-shielding area 002b. The plurality of second electrode blocks 1022 in the pixel electrode 102 can be divided into: a first electrode group A corresponding to the first sub-light-shielding area 002a, and a second electrode group B corresponding to the second sub-light-shielding area 002b. Here, the number of second electrode blocks 1022 distributed within the first electrode group A can be multiple, and all second electrode blocks 1022 within the first electrode group A can be located within the first sub-light-shielding area 002b; the number of second electrode blocks 1022 distributed within the second electrode group B can also be multiple, and all second electrode blocks 1022 within the first electrode group B can be located within the second sub-light-shielding area 002b. It should be noted that after the plurality of second electrode blocks 1022 in the pixel electrode 102 are grouped, the number of first electrode groups A is two, and the number of second electrode groups B is also two. For example, both first electrode groups A are distributed in... Figure 5 On the left side, both second electrode groups B are distributed in Figure 5 On the right side of the middle.

[0084] When a certain sub-pixel region 000a in the electronic paper 000 is in color, the polarity of the third potential applied to each of the second electrode blocks 1022 in the first electrode group A is opposite to the polarity of the third potential applied to each of the second electrode blocks 1022 in the second electrode group B, so that one of the black particles 302b and white particles 302a can be distributed in the first sub-shading region 002a, and the other of the black particles 302b and white particles 302a can be distributed in the second sub-shading region 002b.

[0085] For example, the white particles 301a in the electrophoresis unit 300 can be positively charged particles, and the black particles 301b can be negatively charged particles. When a certain sub-pixel region 000a in the electronic paper 000 is in a colored state, the third potential applied to each of the second electrode blocks 1022 in the first electrode group A in the sub-pixel region 000a is less than 0, and the third potential applied to each of the second electrode blocks 1022 in the second electrode group B in the sub-pixel region 000a is greater than 0. Thus, the direction of the electric field force generated between each second electrode block 1022 in the first electrode group A and the common electrode 202 is from the second substrate 200 to the first substrate 100. Under the action of this electric field force, black particles 301b can converge towards one side of the first substrate 100 in the electrophoretic solution 302. The direction of the electric field force generated between each second electrode block 1022 in the second electrode group B and the common electrode 202 is from the first substrate 100 to the second substrate 200. Under the action of this electric field force, white particles 301a can converge towards one side of the first substrate 100 in the electrophoretic solution 302. Therefore, both white particles 301a and black particles 301b in the electrophoresis unit 300 can converge toward one side of the first substrate 100. White particles 301a can move towards the first sub-shading area 002a, and black particles 301b can move towards the second sub-shading area 002b. This allows the converged white particles 301a to be distributed within the first sub-shading area 002a, and the converged black particles 301b to be distributed within the second sub-shading area 002b. In this way, it can be ensured that both white particles 301a and black particles 301b in the electrophoresis unit 300 can be blocked by the black matrix 203.

[0086] It should be noted that each of the second electrode blocks 2012 within the first electrode group A can be loaded with the same potential, or two different potentials can be loaded. When each of the second electrode blocks 2012 within the first electrode group A is loaded with two different potentials, the multiple second electrode blocks 2012 within the first electrode group A can be divided into two groups along the direction closest to the light-transmitting area 001. Similarly, the multiple second electrode blocks 2012 within the second electrode group B can also be divided into two groups. For example, in Figure 5 In this process, each electrode block V1 can be divided into one group, and each potential block V2 can be divided into another group, with electrode block V2 being closer to the light-transmitting area 001 than electrode block V1.

[0087] In this scenario, when sub-pixel region 000a is in color, the third potential applied to each of the second electrode blocks 2012 within the first electrode group A is less than 0, and the absolute value of the third potential applied to electrode block V1 of the first electrode group A can be greater than the absolute value of the third potential applied to electrode block V2. Thus, the density of white particles 301a converging near electrode block V1 is greater than the density of white particles 301a converging near electrode block V2. Furthermore, since electrode block V2 is closer to the light-transmitting region 001 than electrode block V1, when the density of white particles 301a converging near electrode block V1 is greater than the density of white particles 301a converging near electrode block V2, it can be ensured that most white particles 301a are within the first light-shielding region 002a. Similarly, the third potential applied to each of the second electrode blocks 2012 within the second electrode group B is greater than 0, and the third potential applied to electrode block V1 of the second electrode group B can be greater than the third potential applied to electrode block V2. Thus, the density of black particles 301b gathered near electrode block V1 is greater than the density of black particles 301b gathered near electrode block V2. Furthermore, since electrode block V2 is closer to the light-transmitting area 001 than electrode block V1, when the density of black particles 301b gathered near electrode block V1 is greater than the density of black particles 301b gathered near electrode block V2, it can be ensured that most of the black particles 301b are within the second light-shielding area 002b.

[0088] In this embodiment, when the sub-pixel region 000a is in color, the absolute value of the third potential applied to the first electrode block 2011 is less than the absolute value of the third potential applied to the second electrode block 2012. Here, the absolute value of the third potential applied to the second electrode block 2012 is larger, resulting in a larger electric field between the second electrode block 2012 and the common electrode 202, causing the particles 301 to converge and mainly distribute within the light-shielding area 002. The absolute value of the third potential applied to the first electrode block 2011 is smaller, resulting in a smaller electric field between the second electrode block 2012 and the common electrode 202, allowing a small portion of the particles 301 to also be distributed within the light-transmitting area 001. Thus, by applying different third potentials to each first electrode block 2011, it is possible to ensure that particles 301 of different densities are distributed within the light-transmitting area 001, enabling the sub-pixel region 000a to exhibit different grayscale states. It should be noted that when the sub-pixel region 000a is in color, the third potential applied to each first electrode block 2011 can be the same.

[0089] The second scenario occurs when a sub-pixel region 000a within the electronic paper 000 is entirely white, such as... Figure 9 As shown, Figure 9 yes Figure 7The diagram shows the effect of a sub-pixel region in the electronic paper being entirely white. The first electrode block 1021 and the second electrode block 1022 within this sub-pixel region 000a can be configured to apply different first potentials, causing the white particles 301a in the electrophoresis unit 300 within this sub-pixel region 000a to converge towards the side closer to the second substrate 200 and then distribute within the light-transmitting area 001 of this sub-pixel region 000a. In this case, since the white particles 301a in the electrophoresis unit 300 converge towards the side closer to the second substrate 200 and are mainly distributed within the light-transmitting area 001 of this sub-pixel region 000a, the thickness of the white particles 301a distributed within the light-transmitting area 001 of this sub-pixel region 000a after convergence is relatively large; for example, the number of layers of white particles 301a distributed within the light-transmitting area 001 after convergence is two or more. That is, when the first electrode block 1021 and the second electrode block 1022 in the sub-pixel region 000a are respectively loaded with different first potentials, the white particles 301a in the electrophoretic unit 300 in this sub-pixel region 000a converge towards the side closer to the second substrate 200 and accumulate into at least two layers in the light-transmitting area 001 of this sub-pixel region 000a. In this way, it can be ensured that the white particles 301a in the light-transmitting area 001 have a high reflectivity to ambient light, making the brightness of this sub-pixel region 000a brighter when it is in a completely white state, thereby improving the contrast of the electronic paper 000 display.

[0090] For example, the white particles 301a in the electrophoresis unit 300 can be positively charged particles, and the black particles 301b can be negatively charged particles. The first potential applied to each first electrode block 1021 in the sub-pixel region 000a can be greater than 0. Thus, after the first potential is applied to each first electrode block 1021 in the sub-pixel region 000a, an electric field force is generated between the first electrode block 1021 and the common electrode 202. The direction of this electric field force is from the first substrate 100 to the second substrate 200. Under the action of this electric field force, the white particles 301a can move in the electrophoretic solution 302 in the direction toward the second substrate 200, and the black particles 301b can move in the electrophoretic solution 302 in the direction toward the first substrate 100, so that the white particles 301a converge towards the side closer to the second substrate 200, while the black particles 301b converge towards the side closer to the first substrate 100. Therefore, only white particles 301a will converge near the second substrate 200 to ensure that ambient light directed toward this sub-pixel region 000a can be reflected by the white particles 301a converging near the second substrate 200, so that this sub-pixel region 000a can appear completely white.

[0091] It should be noted that, in order to ensure that the white particles 301a converge towards the side closer to the second substrate 200 and are concentrated in the light-transmitting area 001 of the sub-pixel area 000a, the potential of the second electrode block 1022 in the sub-pixel area 000a can be left unloaded. In this case, no electric field force will be generated between the second electrode block 1022 and the common electrode 202.

[0092] A smaller first potential can also be applied to the second electrode block 1022 within the sub-pixel region 000a, and the first potential applied to the second electrode block 1022 can also be greater than 0. That is, when the sub-pixel region 000a is in a completely white state, the first potential applied to the first electrode block 1011 is greater than the first potential applied to the second electrode block 1022. In this case, since the first potential applied to the second electrode block 1022 is smaller, while the first potential applied to the first electrode block 1021 is larger, the white particles 301a mainly move under the action of the electric field force generated between the first electrode block 1021 and the common electrode 202, causing the white particles 301a to converge towards the side closer to the second substrate 200 and mainly distribute within the light-transmitting area 001 of the sub-pixel region 000a.

[0093] Optional, such as Figure 5 and Figure 9 As shown, the plurality of first electrode blocks 1021 in the pixel electrode 102 can be divided into at least two third electrode groups C. Each third electrode group C can contain a plurality of first electrode blocks 2011, and the plurality of first electrode blocks 2011 distributed within each third electrode group C are arranged in a ring. Here, the plurality of first electrode blocks 2011 distributed within each third electrode group C can all be distributed along the boundary of the light-transmitting area 001, and each first electrode block 2011 within each third electrode group C is used to apply the same potential.

[0094] For example, in Figure 5 In the process, each electrode block V3 can be divided into a third electrode group C, and each potential block V4 can be divided into another third electrode group C, and the electrode block V3 is closer to the light-shielding area 002 than the potential block V4.

[0095] In this embodiment, when the sub-pixel region 000a is in a completely white state, a gradient potential loading method can be applied to each electrode block 102a within this sub-pixel region 000a. For example, within this sub-pixel region 000a, the first potential loaded on each electrode block V1 is the same, the first potential loaded on each electrode block V2 is the same, the first potential loaded on each electrode block V3 is the same, and the first potential loaded on each electrode block V4 is the same, and each first potential is greater than 0. Here, the first potential loaded on electrode block V1 is less than the first potential loaded on electrode block V2, the first potential loaded on electrode block V2 is less than the first potential loaded on electrode block V3, and the first potential loaded on electrode block V3 is less than the first potential loaded on electrode block V4. Thus, as... Figure 9 As shown, after the black particles 301b converge near the first substrate 100, they are distributed near each electrode block 102a. The density of black particles 301b near electrode block V1 is less than that near electrode block V2; the density of black particles 301b near electrode block V2 is less than that near electrode block V3; and the density of black particles 301b near electrode block V3 is less than that near electrode block V4. Therefore, after the white particles 301a converge near the second substrate 200, they are mainly distributed within the light-transmitting area 001 of the sub-pixel region 000a.

[0096] The third scenario occurs when a sub-pixel region 000a in the electronic paper 000 is completely black, such as... Figure 10 As shown, Figure 10 yes Figure 7The diagram shows the effect of a sub-pixel region in the electronic paper being completely black. The first electrode block 1021 and the second electrode block 1022 within this sub-pixel region 000a can be configured to apply different second potentials, causing the black particles 301b in the electrophoresis unit 300 within this sub-pixel region 000a to converge towards the side closer to the second substrate 200 and then distribute within the light-transmitting area 001 of this sub-pixel region 000a. In this case, since the black particles 301b in the electrophoresis unit 300 converge towards the side closer to the second substrate 200 and are mainly distributed within the light-transmitting area 001 of this sub-pixel region 000a, the thickness of the black particles 301b distributed within the light-transmitting area 001 of this sub-pixel region 000a after convergence is relatively large; for example, the number of layers of black particles 301b distributed within the light-transmitting area 001 after convergence is two or more. That is, when the first electrode block 1021 and the second electrode block 1022 in the sub-pixel region 000a are respectively loaded with different second potentials, the black particles 301b in the electrophoretic unit 300 in this sub-pixel region 000a converge towards the side closer to the second substrate 200 and accumulate into at least two layers in the light-transmitting area 001 of this sub-pixel region 000a. In this way, it can be ensured that the black particles 301b in the light-transmitting area 001 have a large absorption rate of ambient light, making the brightness of this sub-pixel region 000a darker when it is completely black, thereby further improving the contrast of the electronic paper 000 display.

[0097] For example, the white particles 301a in the electrophoresis unit 300 can be positively charged particles, and the black particles 301b can be negatively charged particles. The second potential applied to each of the first electrode blocks 1021 in the sub-pixel region 000a can be less than 0. Thus, after the second potential is applied to each of the first electrode blocks 1021 in the sub-pixel region 000a, an electric field force is generated between the first electrode block 1021 and the common electrode 202. The direction of this electric field force is from the second substrate 200 to the first substrate 100. Under the action of this electric field force, the black particles 301b can move in the electrophoretic solution 302 in the direction toward the second substrate 200, and the white particles 301a can move in the electrophoretic solution 302 in the direction toward the first substrate 100, so that the black particles 301b converge towards the side closer to the second substrate 200, and the white particles 301a converge towards the side closer to the first substrate 100. Therefore, only black particles 301b will converge near the second substrate 200 to ensure that ambient light from the outside is absorbed by the black particles 301b that converge near the second substrate 200, so that the sub-pixel region 000a can appear completely black.

[0098] It should be noted that, in order to ensure that the black particles 301b converge towards the side closer to the second substrate 200 and are concentrated in the light-transmitting area 001 of the sub-pixel area 000a, the potential of the second electrode block 1022 in the sub-pixel area 000a can be left unloaded. In this case, no electric field force will be generated between the second electrode block 1022 and the common electrode 202.

[0099] Alternatively, a second potential with a relatively small absolute value can be applied to the second electrode block 1022 within the sub-pixel region 000a, and the second potential applied to the second electrode block 1022 can also be less than 0. That is, when the sub-pixel region 000a is completely black, the absolute value of the second potential applied to the first electrode block 1011 is greater than the absolute value of the second potential applied to the second electrode block 1022. In this case, since the absolute value of the second potential applied to the second electrode block 1022 is smaller, while the absolute value of the second potential applied to the first electrode block 1021 is larger, the black particles 301b mainly move under the action of the electric field force generated between the first electrode block 1021 and the common electrode 202, causing the black particles 301b to converge towards the side closer to the second substrate 200 and mainly distribute within the light-transmitting area 001 of the sub-pixel region 000a.

[0100] In the embodiments of this application, such as Figure 5 and Figure 10 As shown, when sub-pixel region 000a is completely black, a gradient potential loading method can be applied to each electrode block 102a within this sub-pixel region 000a. For example, within this sub-pixel region 000a, the second potential loaded on each electrode block V1 is the same, the second potential loaded on each electrode block V2 is the same, the second potential loaded on each electrode block V3 is the same, and the second potential loaded on each electrode block V4 is the same, and each second potential is less than 0. Here, the absolute value of the second potential loaded on electrode block V1 is less than the absolute value of the second potential loaded on electrode block V2, the absolute value of the second potential loaded on electrode block V2 is less than the absolute value of the second potential loaded on electrode block V3, and the absolute value of the second potential loaded on electrode block V3 is less than the absolute value of the second potential loaded on electrode block V4. Thus, as... Figure 10As shown, after the white particles 301a converge near the first substrate 100, they are distributed near each electrode block 102a. The density of white particles 301a near electrode block V1 is less than that near electrode block V2; the density of white particles 301a near electrode block V2 is less than that near electrode block V3; and the density of white particles 301a near electrode block V3 is less than that near electrode block V4. Therefore, after the black particles 301b converge near the second substrate 200, they are mainly distributed within the light-transmitting area 001 of the sub-pixel region 000a.

[0101] Optionally, the first substrate 100 may further include a thin-film transistor electrically connected to the electrode block 102a. In this application, the electronic paper 000 can apply a potential to the corresponding electrode block 102a via the thin-film transistor.

[0102] In the embodiments of this application, such as Figure 7 As shown, the first substrate 100 may further include a reflective layer 104 located on the side of the color resist block 103 near the first substrate 101. The orthographic projection of the reflective layer 104 onto the first substrate 101 may lie within the orthographic projection of the color resist block 103 onto the first substrate 101. In this case, when the sub-pixel region 000a is in a colored state, light rays incident on the first substrate 100 can be reflected by the reflective layer 104 after passing through the color resist block 103, ensuring that most of the light rays incident on the first substrate 100 are reflected after passing through the color resist block 103, thereby further improving the effect of the sub-pixel region 000a in a colored state.

[0103] In summary, the electronic paper provided in this application includes: a first substrate and a second substrate disposed opposite to each other, and an electrophoresis unit located between the two. When a sub-pixel region in the electronic paper needs to display a color state, after at least two electrode blocks in this sub-pixel region are loaded with different potentials, black particles and white particles in the electrophoresis unit can converge towards the side closer to the first substrate. The converged black and white particles can be blocked by a black matrix, allowing the color resist block to emit ambient light, and the color of the reflected light matches the color of the color resist block, thus enabling the electronic paper to display in color. Furthermore, since the particles converged near the first substrate can be blocked by the black matrix when the sub-pixel region displays a color state, most of the light incident on the first substrate can be reflected by the color resist block, rather than by the particles. This ensures a better effect when the sub-pixel region displays a color state, thereby effectively improving the display effect of the electronic paper.

[0104] This application also provides a driving method for electronic paper, which can be applied to the electronic paper in the above embodiments. The driving method may include:

[0105] Different potentials are applied to at least two electrode blocks in the sub-pixel region to cause the particles in the electrophoretic unit of the sub-pixel region to exhibit different aggregation patterns.

[0106] Optionally, the sub-pixel region has: a light-transmitting area and a light-blocking area located around the light-transmitting area, wherein the light-transmitting area is the area in the sub-pixel region where light-transmitting holes are distributed, and the light-blocking area is the area in the sub-pixel region where black matrices are distributed.

[0107] Applying different potentials to at least two electrode blocks in a sub-pixel region to cause particles within the electrophoretic unit of the sub-pixel region to exhibit different aggregation patterns, including:

[0108] Different potentials are applied to at least two electrode blocks in the sub-pixel region so that the particles in the electrophoresis unit converge toward the side closer to the second substrate and accumulate in the light-transmitting area to form at least two layers, or so that the particles in the electrophoresis unit converge toward the side closer to the first substrate and are distributed in the light-shielding area.

[0109] Optionally, the multiple electrode blocks in the pixel electrode include: multiple first electrode blocks and multiple second electrode blocks, at least a portion of the first electrode blocks being located in the light-transmitting area, and at least a portion of the second electrode blocks being located in the light-shielding area; the multiple particles include: multiple white particles and multiple black particles.

[0110] Optionally, when the sub-pixel region is in a completely white state, applying different potentials to at least two electrode blocks in the sub-pixel region includes:

[0111] Different first potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles in the electrophoretic unit converge towards the side closer to the second substrate and accumulate into at least two layers in the light-transmitting area.

[0112] Optionally, when the sub-pixel region is in a completely black state, different potentials are applied to at least two electrode blocks in the sub-pixel region, including:

[0113] Different second potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the black particles in the electrophoretic unit converge towards the side closer to the second substrate and accumulate into at least two layers in the light-transmitting area.

[0114] Optionally, when the sub-pixel region is in a colored state, different potentials are applied to at least two electrode blocks in the sub-pixel region, including:

[0115] Different third potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles and black particles in the electrophoresis unit converge towards the side closer to the first substrate and are distributed in the light-shielding area.

[0116] Optionally, the driving method may further include applying a common potential to a common electrode while applying different potentials to at least two electrode blocks in the sub-pixel region.

[0117] Optionally, white particles are positively charged particles, and black particles are negatively charged particles; when the sub-pixel region is in a completely white state, the first potential applied to the first electrode block is greater than the first potential applied to the second electrode block, and the first potential is greater than 0; when the sub-pixel region is in a completely black state, the absolute value of the second potential applied to the first electrode block is greater than the absolute value of the second potential applied to the second electrode block, and the second potential is less than 0; when the sub-pixel region is in a colored state, the absolute value of the third potential applied to the first electrode block is less than the absolute value of the third potential applied to the second electrode block.

[0118] Optionally, the light-shielding area includes: a first sub-light-shielding area and a second sub-light-shielding area. The multiple second electrode blocks in the pixel electrode are divided into: a first electrode group corresponding to the first sub-light-shielding area and a second electrode group corresponding to the second sub-light-shielding area. When the sub-pixel area presents a color state, the third potential loaded on each second electrode block in the first electrode group is less than 0, and the third potential loaded on each second electrode block in the second electrode group is greater than 0, so that the converged white particles are distributed in the first sub-light-shielding area, and the converged black particles are distributed in the second sub-light-shielding area.

[0119] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working principle of the electronic paper driving method described above can be referred to the corresponding part in the aforementioned electronic paper structural embodiment, and will not be repeated here.

[0120] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0121] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0122] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electronic paper, characterized by, include: A first substrate and a second substrate disposed opposite to each other, and a plurality of electrophoretic units located between the first substrate and the second substrate, the electrophoretic units having a plurality of particles; The first substrate includes: a first substrate, and a plurality of color resist blocks and a plurality of pixel electrodes located on one side of the first substrate. The plurality of pixel electrodes and the plurality of electrophoretic units correspond one-to-one, and also correspond one-to-one with the plurality of color resist blocks. Each pixel electrode, its corresponding electrophoretic unit, and its corresponding color resist block are all located in the same sub-pixel region in the electronic paper. The pixel electrode in each sub-pixel region includes: a plurality of electrode blocks that are separated from each other. The second substrate includes: a second substrate, and a common electrode and a black matrix located on one side of the second substrate. The black matrix has a plurality of light-transmitting holes corresponding one-to-one with the plurality of color resist blocks. The orthographic projection of the light-transmitting holes on the first substrate lies within the orthographic projection of the corresponding color resist block on the first substrate, and the orthographic projection of the black matrix on the first substrate overlaps with the orthographic projection of the color resist block on the first substrate. The orthographic projection of the black matrix on the first substrate covers the orthographic projection of each corner of the color resist block on the first substrate. The black matrix extends from the corner of the sub-pixel region into the sub-pixel region. In this sub-pixel region, at least two electrode blocks are configured to be loaded with different potentials so that the particles in the electrophoretic unit of the sub-pixel region exhibit different aggregation forms.

2. The electronic paper of claim 1, wherein, When the shape of the orthographic projection of the sub-pixel region onto the first substrate is rectangular, the shape of the orthographic projection of the light-transmitting aperture onto the first substrate is hexagonal or octagonal.

3. The electronic paper of claim 1, wherein, Within the sub-pixel region, the plurality of electrode blocks of the pixel electrode are arranged in multiple rows and columns, and the plurality of electrode blocks in the pixel electrode include: a plurality of first electrode blocks and a plurality of second electrode blocks, at least a portion of the orthographic projection of the first electrode block on the first substrate is located within the orthographic projection of the light-transmitting aperture on the first substrate, and at least a portion of the orthographic projection of the second electrode block on the first substrate is located within the orthographic projection of the black matrix on the first substrate.

4. The electronic paper of claim 3, wherein, The sub-pixel region has: a light-transmitting area and a light-shielding area located around the light-transmitting area, at least a portion of the first electrode block is located within the light-transmitting area, and at least a portion of the second electrode block is located within the light-shielding area; When the first electrode block and the second electrode block in the sub-pixel region are loaded with different potentials, the particles in the electrophoresis unit converge toward the side closer to the second substrate and accumulate in the light-transmitting area to form at least two layers; or, the particles in the electrophoresis unit converge toward the side closer to the first substrate and are distributed in the light-shielding area.

5. The electronic paper of claim 4, wherein, The plurality of particles includes: a plurality of white particles and a plurality of black particles; When the sub-pixel region is in a completely white state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different first potentials so that the white particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers. When the sub-pixel region is in a completely black state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different second potentials so that the black particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers. When the sub-pixel region is in a colored state, the first electrode block and the second electrode block in the sub-pixel region are configured to be loaded with different third potentials, so that the white particles and black particles in the electrophoresis unit converge towards the side closer to the first substrate and are distributed in the light-shielding area.

6. The electronic paper of claim 5, wherein, The light-shielding area includes: a first sub-light-shielding area and a second sub-light-shielding area. The plurality of second electrode blocks in the pixel electrode are divided into: a first electrode group corresponding to the first sub-light-shielding area and a second electrode group corresponding to the second sub-light-shielding area. Wherein, when the sub-pixel region is in color, the polarity of the third potential loaded on each of the second electrode blocks in the first electrode group is opposite to the polarity of the third potential loaded on each of the second electrode blocks in the second electrode group, so that one of the black particles and the white particles are distributed in the first sub-shading area, and the other of the black particles and the white particles are distributed in the second sub-shading area.

7. The electronic paper of claim 3, wherein, The pixel electrode is divided into at least two third electrode groups, wherein the multiple first electrode blocks distributed in one third electrode group are arranged in a ring, and each first electrode block in one third electrode group is used to apply the same potential.

8. The electronic paper according to any one of claims 1 to 7, wherein, The first substrate further includes: a reflective layer located on the side of the color resist block near the first substrate, and a thin-film transistor electrically connected to the electrode block, wherein the orthogonal projection of the reflective layer on the first substrate is located within the orthogonal projection of the color resist block on the first substrate.

9. The electronic paper according to any one of claims 1 to 7, wherein, The electronic paper further includes an insulating barrier located between the first substrate and the second substrate, the insulating barrier being used to divide the space between the first substrate and the second substrate into a plurality of sealed chambers, wherein the electrophoresis units are distributed in the sealed chambers.

10. A driving method of electronic paper, characterized by, Applied to the electronic paper according to any one of claims 1 to 9, the method comprises: Different potentials are applied to at least two electrode blocks in the sub-pixel region to cause the particles in the electrophoretic unit of the sub-pixel region to exhibit different aggregation forms.

11. The method according to claim 10, characterized in that, The sub-pixel region has: a light-transmitting area and a light-shielding area located around the light-transmitting area, wherein the light-transmitting area is the area in the sub-pixel region where the light-passing holes are distributed, and the light-shielding area is the area in the sub-pixel region where the black matrix is ​​distributed; Applying different potentials to at least two electrode blocks in the sub-pixel region to cause particles within the electrophoretic unit of the sub-pixel region to exhibit different aggregation patterns includes: Different potentials are applied to at least two electrode blocks in the sub-pixel region so that the particles in the electrophoresis unit converge toward the side closer to the second substrate and accumulate in the light-transmitting area to form at least two layers, or so that the particles in the electrophoresis unit converge toward the side closer to the first substrate and are distributed in the light-shielding area.

12. The method according to claim 11, characterized in that, The pixel electrode comprises multiple electrode blocks including multiple first electrode blocks and multiple second electrode blocks, wherein at least a portion of the first electrode blocks is located within the light-transmitting area, and at least a portion of the second electrode blocks is located within the light-shielding area; the multiple particles include multiple white particles and multiple black particles. When the sub-pixel region is in a completely white state, applying different potentials to at least two electrode blocks in the sub-pixel region includes: Different first potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers. When the sub-pixel region is in a completely black state, applying different potentials to at least two electrode blocks in the sub-pixel region includes: Different second potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the black particles in the electrophoresis unit converge towards the side closer to the second substrate and accumulate in the light-transmitting area as at least two layers. When the sub-pixel region is in a colored state, applying different potentials to at least two electrode blocks in the sub-pixel region includes: Different third potentials are applied to the first electrode block and the second electrode block in the sub-pixel region so that the white particles and black particles in the electrophoresis unit converge towards the side closer to the first substrate and are distributed in the light-shielding area. The method further includes applying different potentials to at least two electrode blocks in the sub-pixel region while applying a common potential to the common electrode.

13. The method according to claim 12, characterized in that, The white particles are positively charged particles, and the black particles are negatively charged particles; When the sub-pixel region is in a completely white state, the first potential applied to the first electrode block is greater than the first potential applied to the second electrode block, and the first potential is greater than 0; When the sub-pixel region is completely black, the absolute value of the second potential applied to the first electrode block is greater than the absolute value of the second potential applied to the second electrode block, and the second potential is less than 0. When the sub-pixel region is in color, the absolute value of the third potential applied to the first electrode block is less than the absolute value of the third potential applied to the second electrode block.

14. The method according to claim 13, characterized in that, The light-shielding area includes: a first sub-light-shielding area and a second sub-light-shielding area. The plurality of second electrode blocks in the pixel electrode are divided into: a first electrode group corresponding to the first sub-light-shielding area and a second electrode group corresponding to the second sub-light-shielding area. When the sub-pixel region is in color, the third potential loaded on each second electrode block in the first electrode group is less than 0, and the third potential loaded on each second electrode block in the second electrode group is greater than 0, so that the converged white particles are distributed in the first sub-shading area, and the converged black particles are distributed in the second sub-shading area.

Images