Display panel and display apparatus

Abstract

A display panel (30) and a display apparatus (10). The display panel (30) comprises a color filter substrate (100), an electronic-paper layer (400) and an array substrate (500), wherein the array substrate (500), the electronic-paper layer (400) and the color filter substrate (100) are sequentially arranged. The color filter substrate (100) comprises a color filter base (110) and a color resist layer (200), wherein the color resist layer (200) is arranged on the color filter base (110), the color resist layer (200) comprises a plurality of color resists (210), the plurality of color resists (210) are spaced apart, a blank area (280) is arranged between two adjacent color resists (210), at least one optical channel (270) is arranged in each color resist (210), the optical channels (270) penetrate the color resist (210), and a portion of light passes through the optical channels (270) to irradiate the electronic-paper layer (400). By means of the design of the optical channels (270) of the color resist layer (200), the overall brightness of the display panel (30) is improved, and contrast ratio degradation and the occurrence of color shift of the display panel (30) are avoided.

Description

Display panel and display device Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] With the development of digital technology, more and more display devices are entering people's lives, such as electronic paper (EP). Because electronic paper display panels can maintain display for a long time when the power is off, and have advantages such as being light, thin, low power consumption, and simple manufacturing process, they are becoming increasingly popular.

[0003] With the urgent need for color electronic paper display panels, adding a color resist layer to existing electronic paper display panels is an important way to achieve color electronic paper displays. However, the overall brightness of electronic paper panels with color resist layers is low due to the filtering effect of the color resist layers, especially in low ambient light conditions. The usual approach is to increase the area of ​​the blank area between two adjacent color resist layers, but this will also lead to a decrease in the contrast and color shift of the electronic paper display panel. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and display device that improves the overall brightness of the display panel and avoids a decrease in the contrast and color shift of the display panel.

[0005] This application discloses a display panel, which includes a color filter substrate, an electronic paper layer, and an array substrate. The array substrate, the electronic paper layer, and the color filter substrate are arranged sequentially. The color filter substrate includes a color filter substrate and a color resist layer. The color resist layer is disposed on the color filter substrate and includes multiple color resists. The multiple color resists are arranged at intervals, and a blank area is provided between two adjacent color resists. Each color resist has at least one light channel that penetrates the color resist, and some light passes through the light channel to illuminate the electronic paper layer.

[0006] This application also discloses a display device, which includes a driving circuit and a display panel, wherein the driving circuit drives the display panel to display an image.

[0007] Compared to the current approach of increasing the gap between different color resists to improve the brightness of the display panel, this embodiment sets a light channel within the color resist. This light channel penetrates the color resist, allowing external light to pass through it when it shines on the color resist of the display panel. The light then shines on the microcapsules of the underlying electronic paper layer, where it is reflected and passes through the color resist from the side closest to the electronic paper layer, exiting the display panel to display the image. Because more light can reach the electronic paper layer for reflection, the overall brightness of the display panel is improved. Furthermore, since it is not necessary to increase the width of the white space, the problems of decreased contrast and color shift caused by increasing the width of the white space are avoided. Attached Figure Description

[0008] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0009] Figure 1 is a schematic diagram of a display device according to an embodiment of this application;

[0010] Figure 2 is a cross-sectional schematic diagram of a display panel according to the first embodiment of this application;

[0011] Figure 3A is a schematic diagram of a longitudinal arrangement of an optical channel according to the first embodiment of this application;

[0012] Figure 3B is a schematic diagram of a horizontally arranged optical channel according to the first embodiment of this application;

[0013] Figure 4 is a schematic diagram of a first embodiment of this application in which two optical channels are provided in each color resist;

[0014] Figure 5A is a schematic diagram of the first optical channel longitudinal arrangement with added white color resist according to the first embodiment of this application;

[0015] Figure 5B is a schematic diagram of the first embodiment of this application with a first type of horizontal optical channel arrangement and the addition of white color resist;

[0016] Figure 5C is a schematic diagram of the first type of white color resist in a grid pattern according to the first embodiment of this application;

[0017] Figure 6 is a schematic diagram of the first type of blue color resist according to the first embodiment of this application;

[0018] Figure 7 is a schematic diagram of the second type of blue color resist according to the first embodiment of this application;

[0019] Figure 8 is a schematic diagram of a convex color resist according to the first embodiment of this application;

[0020] Figure 9 is a schematic diagram of an adjacent color resist with inconsistent optical channel length directions according to the first embodiment of this application;

[0021] Figure 10 is a schematic diagram of a strip-shaped groove according to the first embodiment of this application;

[0022] Figure 11 is a schematic diagram of a pixel electrode according to the first embodiment of this application;

[0023] Figure 12 is a plan view of a display panel according to the first embodiment of this application;

[0024] Figure 13 is a schematic diagram of an optical channel according to a second embodiment of this application;

[0025] Figure 14 is a schematic diagram of an optical channel according to a third embodiment of this application;

[0026] Figure 15 is a schematic diagram of an optical channel according to the fourth embodiment of this application. Detailed Implementation

[0027] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0028] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0029] Figure 1 is a schematic diagram of a display device according to an embodiment of this application. As shown in Figure 1, this application discloses a display device 10, which includes a driving circuit 20 and a display panel 30. The driving circuit 20 drives the display panel 30 to display an image.

[0030] The display panel 30 is an electronic paper display panel 30, which includes an electronic paper layer 400. The electronic paper layer 400 can be composed of microcapsules 410 or microcup structures. This application uses the electronic paper layer 400 including microcapsules 410 as an example for explanation. The particles in the microcapsules 410 can include black and white particles or colored particles. When the particles in the microcapsules 410 include colored particles, the color of the colored particles needs to be the same as the color resist 210 above.

[0031] This application also discloses a display panel 30, which can be used in the display device 10 described above. Regarding the display panel 30, this application provides the following design, which is specifically described through several embodiments:

[0032] Example 1:

[0033] Figure 2 is a cross-sectional schematic diagram of a display panel according to the first embodiment of this application. As shown in Figure 2, the direction indicated by the arrow in Figure 2 is the propagation direction of some light. This application discloses a display panel 30, which includes a color filter substrate 100, an electronic paper layer 400 and an array substrate 500. The array substrate 500, the electronic paper layer 400 and the color filter substrate 100 are arranged sequentially.

[0034] The color filter substrate 100 includes a color filter substrate 110 and a color resist layer 200. The color resist layer 200 is disposed on the color filter substrate 110 and includes a plurality of color resists 210. The plurality of color resists 210 are spaced apart, and a blank area 280 is provided between two adjacent color resists 210. Each color resist 210 is provided with at least one light channel 270. The light channel 270 penetrates the color resist 210, and some light passes through the light channel 270 to illuminate the electronic paper layer 400.

[0035] Compared to the current solution of increasing the gap between different color resists 210 to improve the brightness of the display panel 30, this embodiment sets a light channel 270 within the color resist 210. The light channel 270 penetrates the color resist 210, so that when external light shines on the color resist 210 of the display panel 30, it can pass through the color resist 210 through the light channel 270, and then shine on the microcapsules 410 of the electronic paper layer 400 below. The light is reflected and passes through the color resist 210 from the side of the color resist 210 closest to the electronic paper layer 400, and is reflected out of the display panel 30 to display the image. Since more light can shine on the electronic paper layer 400 for reflection, the overall brightness of the display panel 30 can be improved. Moreover, since it is not necessary to increase the width of the blank area 280, the problems of decreased contrast and color shift of the display panel 30 caused by increasing the width of the blank area 280 can be avoided.

[0036] Figure 3A is a schematic diagram of a longitudinal arrangement of an optical channel according to the first embodiment of this application, and Figure 3B is a schematic diagram of a transverse arrangement of an optical channel according to the first embodiment of this application. As shown in Figures 3A and 3B, the optical channel 270 is strip-shaped, and the optical channel 270 divides the color resist 210 into a first sub-color resist 211 and a second sub-color resist 212. The width between the first sub-color resist 211 and the second sub-color resist 212 is smaller than the width of the blank area 280.

[0037] The length direction of the light channel 270 can be arranged vertically or horizontally. The strip-shaped light channel 270 is equivalent to increasing the area of ​​the light channel 270, which can further improve the brightness of the display panel 30. Moreover, the strip-shaped light channel 270 is easier to prepare when making the mask compared to other irregularly shaped light channels 270.

[0038] Furthermore, the shape of the light channel 270 can be set to be rectangular. For example, the cross-sectional shape of the light channel 270 in the plane direction of the color resist layer 200 is rectangular, and the area of ​​the first sub-color resist 211 is equal to the area of ​​the second sub-color resist 212.

[0039] The rectangular light channel 270 makes it easier to calculate its area, simplifying the design process. Furthermore, by maintaining the equal areas of the first sub-color resist 211 and the second sub-color resist 212 after the division, the rectangular light channel 270 is effectively positioned in the middle of the color resist 210. This ensures that the brightness of the first sub-color resist 211 and the second sub-color resist 212 is nearly identical. Additionally, after reflection by the microcapsule 410, most of the light passing through the light channel 270 through the color resist 210 propagates through either the first sub-color resist 211 or the second sub-color resist 212, rather than through other color resists of different colors, further reducing color shift issues in the display panel 30.

[0040] Figure 4 is a schematic diagram of a first embodiment of this application in which each color resist contains two optical channels. As shown in Figure 4, the color resist 210 includes a red color resist 230, a green color resist 240 and a blue color resist 250. The red color resist 230 contains two optical channels 270, namely a first sub-optical channel 270 and a second sub-optical channel 270. The first sub-optical channel 270 and the second sub-optical channel 270 are arranged in a crisscross pattern, dividing the red color resist 230 into four red sub-color resists 231. The four red sub-color resists 231 are arranged in a grid pattern.

[0041] The green color resist 240 is provided with two optical channels 270, namely a first sub-optical channel 270 and a second sub-optical channel 270. The first sub-optical channel 270 and the second sub-optical channel 270 are arranged in a crisscross pattern, dividing the green color resist 240 into four green sub-color resists 241. The four green sub-color resists 241 are arranged in a grid pattern.

[0042] The blue color resist 250 is provided with two optical channels 270, namely a first sub-optical channel 270 and a second sub-optical channel 270. The first sub-optical channel 270 and the second sub-optical channel 270 are arranged in a crisscross pattern, dividing the blue color resist 250 into four blue sub-color resists 251. The four blue sub-color resists 251 are arranged in a grid pattern.

[0043] This is equivalent to increasing the area of ​​the light channel 270, which can improve the brightness of the display panel 30. Moreover, the scheme of setting two horizontally and vertically overlapping light channels 270 in each of the red color resist 230, green color resist 240 and blue color resist 250, since there is a partial overlap between the two horizontally and vertically overlapping light channels 270, and the overlapping area is located in the middle of the entire color resist 210, so that there is no color resist 210 blocking the light in the middle of the entire color resist 210.

[0044] For example, when light passing through the four red sub-color resists 231 shines on the microcapsule 410 and is reflected off the middle position of the red color resist 230, it is not blocked by the color resist 210, which can reduce losses and further improve the brightness of the red color resist 230; when light passing through the four green sub-color resists 241 shines on the microcapsule 410 and is reflected off the middle position of the green color resist 240, it is not blocked by the color resist 210, which can reduce losses and further improve the brightness of the green color resist 240; when light passing through the four blue sub-color resists 251 shines on the microcapsule 410 and is reflected off the middle position of the blue color resist 250, it is not blocked by the color resist 210, which can reduce losses and further improve the brightness of the blue sub-color resist 251, thereby improving the brightness of the display panel 30.

[0045] Furthermore, the light entering the area below the entire color resist 210 from the overlapping area of ​​the two horizontally and vertically overlapping light channels 270 can be evenly reflected outwards in the direction of the four sub-color resists 210 arranged in a grid pattern, making the brightness of the color resists 210 after being divided by the light channels 270 more uniform.

[0046] Figure 5A is a schematic diagram of the first optical channel with a vertical arrangement and an added white color resist according to the first embodiment of this application. Figure 5B is a schematic diagram of the first optical channel with a horizontal arrangement and an added white color resist according to the first embodiment of this application. Figure 5C is a schematic diagram of the first white color resist in a grid pattern according to the first embodiment of this application. As shown in Figures 5A-5C, the color resist 210 may further include a white color resist 260. The red color resist 230, green color resist 240, blue color resist 250 and the white color resist 260 are arranged in sequence. A white space area 280 is provided between the red color resist 230 and the green color resist 240, between the green color resist 240 and the blue color resist 250, and between the blue color resist 250 and the white color resist 260.

[0047] By increasing the white color resist 260, the overall display brightness of the display panel 30 can be improved because the white color resist 260 has low light loss.

[0048] Figure 6 is a schematic diagram of the first type of blue color resist according to the first embodiment of this application. As shown in Figure 6, in order to further improve the color vividness of the display panel 30, the area of ​​the light channel 270 corresponding to the blue color resist 250 is set to be larger.

[0049] That is, the color resist 210 includes a red color resist 230, a green color resist 240 and a blue color resist 250. The area of ​​the light channel 270 disposed in the blue color resist 250 is larger than the area of ​​the light channel 270 disposed in the red color resist 230, and the area of ​​the light channel 270 disposed in the blue color resist 250 is larger than the area of ​​the light channel 270 disposed in the green color resist 240.

[0050] Because blue light has a short wavelength, its penetrating power is weak. Therefore, this application sets the area of ​​the light channel 270 in the blue color resist 250 to be larger than the area of ​​the light channel 270 in the red color resist 230 and the green color resist 240, so as to make up for the problem of insufficient blue in the display panel 30 and thus improve the color vividness.

[0051] For example, one light channel 270 can be provided in the red color resist 230, one light channel 270 can be provided in the green color resist 240, and two light channels 270 can be provided in the blue color resist 250, with each light channel 270 having the same area.

[0052] The light channel 270 has a rectangular cross-sectional shape in the plane direction of the color resist layer 200, and each light channel 270 is strip-shaped. The light channel 270 in the red color resist 230 divides the red color resist 230 into a first red sub-color resist 232 and a second red sub-color resist 233. The area of ​​the first red sub-color resist 232 and the area of ​​the second red sub-color resist 233 are equal.

[0053] The light channel 270 within the green color resist 240 divides the green color resist 240 into a first green sub-color resist 242 and a second green sub-color resist 243, wherein the areas of the first green sub-color resist 242 and the second green sub-color resist 243 are equal.

[0054] The optical channel 270 within the blue color resist 250 divides the blue color resist 250 into a first blue sub-color resist 252, a second blue sub-color resist 253, and a third blue sub-color resist 254. The areas of the first blue sub-color resist 252, the second blue sub-color resist 253, and the third blue sub-color resist 254 are all equal. This results in the area of ​​the optical channel 270 within the blue color resist 250 being larger than the area of ​​the optical channel 270 within the green color resist 240.

[0055] Taking the first blue sub-color resist 252, the second blue sub-color resist 253, and the third blue sub-color resist 254 arranged from left to right as an example, the light entering through the optical channel 270 between the first blue sub-color resist 252 and the second blue sub-color resist 253 is partially reflected out by the first blue sub-color resist 252 and partially reflected out by the second blue sub-color resist 253. Similarly, the light entering through the optical channel 270 between the second blue sub-color resist 253 and the third blue sub-color resist 254 is partially reflected out by the second blue sub-color resist 253 and partially reflected out by the third blue sub-color resist 254. This results in more light being reflected out by the second blue sub-color resist 253, thereby further increasing the brightness of the middle position of the blue color resist 250 and avoiding the problem of color mixing between two adjacent color resists 210 of different colors.

[0056] Of course, the blue color resist 250 can also be divided into four. Figure 7 is a schematic diagram of the second type of blue color resist according to the first embodiment of this application. As shown in Figure 7, the red color resist 230 is provided with one light channel 270, the green color resist 240 is provided with one light channel 270, and the blue color resist 250 is provided with two light channels 270. The two light channels 270 in the blue color resist 250 are arranged to overlap horizontally and vertically, and the area of ​​each light channel 270 is the same.

[0057] The light channel 270 has a rectangular cross-sectional shape in the plane direction of the color resist layer 200, and each light channel 270 is strip-shaped. The light channel 270 in the red color resist 230 divides the red color resist 230 into a first red sub-color resist 232 and a second red sub-color resist 233. The area of ​​the first red sub-color resist 232 and the area of ​​the second red sub-color resist 233 are equal.

[0058] The light channel 270 within the green color resist 240 divides the green color resist 240 into a first green sub-color resist 242 and a second green sub-color resist 243, wherein the areas of the first green sub-color resist 242 and the second green sub-color resist 243 are equal.

[0059] The optical channel 270 within the blue color resist 250 divides the blue color resist 250 into a fourth blue sub-color resist 255, a fifth blue sub-color resist 256, a sixth blue sub-color resist 257, and a seventh blue sub-color resist 258. The areas of the fourth blue sub-color resist 255, the fifth blue sub-color resist 256, the sixth blue sub-color resist 257, and the seventh blue sub-color resist 258 are all equal.

[0060] Compared to the scheme of setting two parallel optical channels 270 within the blue color filter 250, the scheme of setting two horizontally and vertically overlapping optical channels 270 within the blue color filter 250 has a partial overlap area, and the overlap area is located in the middle of the entire blue color filter 250. This ensures that the middle position of the blue color filter 250 is not blocked by the blue color filter 250. When the blue light filtered by the fourth blue sub-color filter 255, the fifth blue sub-color filter 256, the sixth blue sub-color filter 257, and the seventh blue sub-color filter 258 is reflected from the middle position of the blue color filter 250, it will not be blocked by the color filter 210, thus reducing the loss of blue light.

[0061] Furthermore, the light entering the area below the blue color filter 250 from the overlapping area of ​​the two horizontally and vertically overlapping light channels 270 can be evenly reflected out in the direction of the fourth blue sub-color filter 255, the fifth blue sub-color filter 256, the sixth blue sub-color filter 257, and the seventh blue sub-color filter 258, making the brightness of the fourth blue sub-color filter 255, the fifth blue sub-color filter 256, the sixth blue sub-color filter 257, and the seventh blue sub-color filter 258 more uniform.

[0062] Figure 8 is a schematic diagram of a convex color filter according to the first embodiment of this application. As shown in Figure 8, the direction indicated by the arrow in Figure 8 is the propagation direction of part of the light. The direction along the center of the color filter 210 to the edge of the color filter 210 is the first direction, which can be understood as the direction of diffusion outward from the center of the color filter 210. The thickness of the color filter 210 gradually decreases along the first direction. The color filter substrate 100 also includes a color filter protective layer 310 and a transparent insulating layer 320. The color filter protective layer 310 is disposed on the color filter layer 200 and is located on the side of the color filter layer 200 away from the color filter substrate 110. The transparent insulating layer 320 is disposed on the side of the color filter protective layer 310 away from the color filter layer 200. The refractive index of the color filter protective layer 310 is greater than the refractive index of the color filter 210 in the color filter layer 200.

[0063] In this way, after light passes through the edge of the color resist 210, it is refracted downwards towards the center of the color resist 210 and illuminates the microcapsule 410 below the center of the color resist 210. When the color resist 210 displays a high grayscale, the light is reflected towards the center of the color resist 210 and propagates out along the center of the color resist 210, as well as through the light channel 270. This results in high brightness at the center of the color resist 210 and low brightness at the edge, avoiding color mixing problems. Moreover, when the color resist 210 displays a low grayscale or zero grayscale, the light is absorbed by the microcapsule 410 below the center of the color resist 210 and does not emit, avoiding color shift problems caused by large-angle reflected light. Of course, the refractive index of the transparent insulating layer 320 can also be greater than that of the color resist protective layer 310 to cause secondary refraction of light, making the light more focused on the microcapsule 410 below the center of the color resist 210.

[0064] Figure 9 is a schematic diagram of an adjacent color resist with inconsistent optical channel length directions according to the first embodiment of this application. As shown in Figure 9, the color resist 210 includes a red color resist 230, a green color resist 240 and a blue color resist 250, which are arranged in sequence.

[0065] The optical channel 270 within the red color resist 230 divides the red color resist 230 into two red sub-color resists 231; the optical channel 270 within the green color resist 240 divides the green color resist 240 into two green sub-color resists 241; and the optical channel 270 within the blue color resist 250 divides the blue color resist 250 into two blue sub-color resists 251.

[0066] With the length direction of the light channel 270 in the red color resist 230 as the horizontal direction, the length direction of the light channel 270 in the green color resist 240 as the vertical direction, and the length direction of the light channel 270 in the blue color resist 250 as the horizontal direction, simply put, the length direction of the light channel 270 between two adjacent color resists 210 is set perpendicularly.

[0067] It should be noted that in the vertical direction, if the length direction of the optical channel 270 in the red color resist 230 of the first row is horizontal, then the length direction of the optical channel 270 in the red color resist 230 of the second row is vertical; if the length direction of the optical channel 270 in the green color resist 240 of the first row is vertical, then the length direction of the optical channel 270 in the green color resist 240 of the second row is horizontal; if the length direction of the optical channel 270 in the blue color resist 250 of the first row is horizontal, then the length direction of the optical channel 270 in the blue color resist 250 of the second row is vertical.

[0068] Because the width of the light channel 270 is small, the length direction of the light channel 270 between two adjacent color resists 210 is not connected, which can avoid the formation of regular long strip slits on the color resist layer 200, thereby avoiding the problem of light diffraction and improving the display effect of the display panel 30.

[0069] Figure 10 is a schematic diagram of a strip-shaped groove according to the first embodiment of this application. As shown in Figure 10, the light channel 270 divides the color resist 210 into a first sub-color resist 211 and a second sub-color resist 212. The color filter substrate 100 further includes a color resist protective layer 310, which is disposed on the color resist layer 200 and located on the side of the color resist layer 200 away from the color filter substrate 110. A strip-shaped groove 111 is provided on the side of the color filter substrate 110 facing the color resist layer 200, and the strip-shaped groove 111 is correspondingly disposed with the blank area 280. In simple terms, The orthographic projection of the strip groove 111 covers the orthographic projection of the blank area 280. The inner surface of the strip groove 111 is an arc surface, and the width direction of the blank area 280 is the second direction. The cross section of the strip groove 111 in the second direction is arc-shaped. The refractive index of the color filter substrate 110 is less than the refractive index of the color resist protective layer 310. The strip groove 111 is located between two adjacent color resists 210 and corresponds to the blank area 280. It can refract light passing through the blank area 280 towards the color resist 210 and project orthographically onto the surface of the electronic paper layer 400.

[0070] This allows light illuminating the left half of the strip groove 111 to be refracted and illuminate the electronic paper layer 400 directly below the corresponding color resist 210 on the left, and light illuminating the right half of the strip groove 111 to be refracted and illuminate the electronic paper layer 400 directly below the corresponding color resist 210 on the right, thereby increasing the brightness of the color resists 210 on both sides of the strip groove 111.

[0071] Furthermore, a strip groove 111 can be provided at the position corresponding to the optical channel 270. For example, the color filter substrate 110 is also provided with the strip groove 111 at the position corresponding to the optical channel 270, and the orthographic projection of the strip groove 111 also covers the optical channel 270. The inner surface of the strip groove 111 is an arc surface, and the width direction of the blank area 280 is the second direction. The cross section of the strip groove 111 in the second direction is arc-shaped.

[0072] By setting a strip groove 111 at the position of the light channel 270, the strip groove 111 can guide the light passing through the light channel 270 to the microcapsule 410 below the first sub-color resist 211 and the second sub-color resist 212, and then propagate out from the corresponding first sub-color resist 211 and the second sub-color resist 212 through the reflection of the microcapsule 410, thereby reducing the probability that the light illuminating the light channel 270 will be reflected out again along the position of the light channel 270, and improving the color vividness and contrast of the display panel 30.

[0073] Figure 11 is a schematic diagram of a pixel electrode according to the first embodiment of this application, and Figure 12 is a planar schematic diagram of a display panel according to the first embodiment of this application. As shown in Figures 11-12, the array substrate 500 includes an array substrate 510, an active switching layer 520 and a pixel electrode layer. The active switching layer 520 is disposed on the array substrate 510, and the pixel electrode layer is disposed on the active switching layer 520. The active switching layer 520 includes a plurality of active switches 521.

[0074] The pixel electrode layer includes a plurality of pixel electrodes 531 spaced apart, each pixel electrode 531 being connected to an active switch 521 in a one-to-one correspondence. A common electrode 330 is provided on the side of the electronic paper layer 400 facing away from the array substrate 510. The pixel electrodes 531 and the common electrode 330 drive the movement of particles within the electronic paper layer 400 to display an image.

[0075] Two adjacent pixel electrodes 531, either horizontally or vertically, are respectively a first pixel electrode 541 and a second pixel electrode 542, and an electrode gap is provided between the first pixel electrode 541 and the second pixel electrode 542.

[0076] The color resist 210 corresponding to the first pixel electrode 541 is the first color resist 221, and the color resist 210 corresponding to the second pixel electrode 542 is the second color resist 222. The first color resist 221 and the second color resist 222 have different colors. Simply put, the first pixel electrode 541 controls the movement of particles below the first color resist 221, and the second pixel electrode 542 controls the movement of particles below the second color resist 222. The first color resist 221 and the second color resist 222 have different colors.

[0077] The projection of the first pixel electrode 541 on the array substrate 510 covers the orthogonal projection of the first color resist 221 on the array substrate 510, and the projection of the second pixel electrode 542 on the array substrate 510 covers the orthogonal projection of the second color resist 222 on the array substrate 510.

[0078] The electronic paper layer 400 includes a plurality of microcapsules 410, wherein the microcapsules 410 include a first microcapsule 411, a second microcapsule 412, and a third microcapsule 413. The orthographic projections of the first color resist 221 and the second color resist 222 onto the array substrate 510 coincide with the orthographic projection of the first microcapsule 411 onto the array substrate 510; simply put, the microcapsule 410 below the first color resist 221 and the second color resist 222 is the first microcapsule 411.

[0079] The orthographic projection of the first pixel electrode 541 on the array substrate 510 covers the orthographic projection of the second microcapsule 412 on the array substrate 510, and the orthographic projection of the first color resist 221 on the array substrate 510 does not overlap with the orthographic projection of the second microcapsule 412 on the array substrate 510. In simple terms, there is a first microcapsule 411 and a second microcapsule 412 above the first pixel electrode 541, only the first microcapsule 411 is disposed below the first color resist 221, and the second microcapsule 412 is not below the first color resist 221.

[0080] The orthographic projection of the second pixel electrode 542 on the array substrate 510 covers the orthographic projection of the third microcapsule 413 on the array substrate 510, and the orthographic projection of the second color resist 222 on the array substrate 510 does not overlap with the orthographic projection of the third microcapsule 413 on the array substrate 510. In simple terms, there are a first microcapsule 411 and a third microcapsule 413 above the second pixel electrode 542, only the first microcapsule 411 is disposed below the second color resist 222, and the third microcapsule 413 is not below the second color resist 222.

[0081] The width of the electrode gap is less than the width of the blank area 280, and the width of the strip groove 111 is equal to the blank area 280 between the first color resist 221 and the second color resist 222; the length of the strip groove 111 in the same direction is equal to the length of the first color resist 221 or the length of the second color resist 222.

[0082] The second microcapsule 412 and the third microcapsule 413 are located directly below the blank area 280, and the second microcapsule 412 and the third microcapsule 413 correspond to the left and right sides of the strip groove 111, respectively.

[0083] For example, when the area corresponding to the first pixel electrode 541 needs to display a high grayscale, and the area corresponding to the second pixel electrode 542 needs to display a low grayscale.

[0084] White particles in the first microcapsule 411 and the second microcapsule 412 above the first pixel electrode 541 move upwards, while black particles move downwards. At this time, the first microcapsule 411 and the second microcapsule 412 above the first pixel electrode 541 are in a reflective state, meaning they can reflect light. This allows some of the light illuminating the left half of the strip groove 111 to be refracted and illuminating the first microcapsule 411 directly below the corresponding first color resist 221 on the left, and then reflected and propagated outwards from the first color resist 221. Some of the light illuminating the left half of the strip groove 111 is insufficient to refract and illuminate the first microcapsule 411 directly below the corresponding first color resist 221 on the left, but it will still illuminate the second microcapsule 412 and be reflected, thus propagating outwards from the first color resist 221. This results in the first pixel electrode 541 displaying a high grayscale corresponding to the image. This further improves the contrast and color vibrancy of the display panel 30.

[0085] White particles in the first microcapsule 411 and third microcapsule 413 above the second pixel electrode 542 move downwards, while black particles move upwards. This causes the first and third microcapsules 411 and 413 above the second pixel electrode 542 to be in a reverse absorption state, absorbing light. This allows some light incident on the left half of the groove 111 to be refracted and absorbed by the first microcapsule 411 directly below the corresponding first color resist 221. Light incident on the left half of the groove 111 that is insufficient to refract and reach the first microcapsule 411 directly below the corresponding first color resist 221 will also be absorbed by the second microcapsule 412. This results in the second pixel electrode 542 displaying a low grayscale, further improving the contrast and color vibrancy of the display panel 30.

[0086] Example 2:

[0087] Figure 13 is a schematic diagram of an optical channel according to a second embodiment of this application. As shown in Figure 13, unlike the first embodiment, the optical channel 270 in this embodiment is wider in the middle and narrower at the edges. That is, the direction from the center of the color resist 210 to the edge of the color resist 210 is the first direction, and the width of the optical channel 270 gradually decreases along the first direction. For example, the cross-sectional shape of the optical channel 270 in the plane direction of the color resist layer 200 is a four-pointed star.

[0088] Compared to the solution in the first embodiment, the light channel 270 in this embodiment is formed in the shape of a four-pointed star. When light passes through the light channel 270 and shines on the microcapsule 410 below the color resist 210, most of the light reflected in the horizontal or vertical direction can be transmitted out of the color resist 210, avoiding excessive reflection of light from being transmitted out of other blank positions in the light channel 270, thereby improving the vividness of the display panel 30.

[0089] Example 3:

[0090] Figure 14 is a schematic diagram of an optical channel according to a third embodiment of this application. As shown in Figure 14, unlike the first embodiment, the optical channel 270 in this embodiment is S-shaped. Specifically, the cross-sectional shape of the optical channel 270 in the plane direction of the color resist layer 200 is S-shaped. The optical channel 270 divides the color resist 210 into a first sub-color resist 211 and a second sub-color resist 212. The width of the optical channel 270 is smaller than the width of the blank area 280, and the area of ​​the first sub-color resist 211 is equal to the area of ​​the second sub-color resist 212.

[0091] Compared to the solution in the first embodiment, the light channel 270 in this embodiment is formed in an S-shape. External light enters the display panel 30 from a certain point in the S-shaped light channel 270. After being reflected by the microcapsule 410, the light is not likely to propagate out again from other positions in the S-shaped light channel 270. Instead, it is easier to propagate out through the color filter 210, reducing the probability of light that propagates directly out of the display panel 30 without being filtered by the color filter 210, thereby improving the vividness of the display panel 30.

[0092] Example 4:

[0093] Figure 15 is a schematic diagram of an optical channel according to the fourth embodiment of this application. As shown in Figure 15, unlike the first embodiment, the color resist 210 in this embodiment is provided with a plurality of optical channels 270. For example, each color resist 210 is provided with a plurality of optical channels 270, and the cross-sectional area of ​​the plurality of optical channels 270 is different. The cross-sectional shape of the optical channel 270 in the plane direction of the color resist layer 200 is circular, and the diameter of each optical channel 270 is different.

[0094] Compared to the solution in the first embodiment, since each color resist 210 is provided with multiple light channels 270, and since the diameter of each light channel 270 is different, an irregular shape is formed, which avoids the problem of light diffraction and improves the display effect of the display panel 30.

[0095] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A display panel, the display panel comprising a color filter substrate, an electronic paper layer, and an array substrate, wherein the array substrate, the electronic paper layer, and the color filter substrate are disposed sequentially, wherein, The color filter substrate includes a color filter substrate and a color resist layer. The color resist layer is disposed on the color filter substrate and includes multiple color resists. The multiple color resists are spaced apart and a blank area is provided between two adjacent color resists. Each color resist has at least one light channel. The light channel passes through the color resist and some light passes through the light channel to illuminate the electronic paper layer.

2. The display panel according to claim 1, wherein, The light channel is strip-shaped, and it divides the color resist into a first sub-color resist and a second sub-color resist. The width between the first sub-color resist and the second sub-color resist is smaller than the width of the white space area.

3. The display panel according to claim 2, wherein, The cross-sectional shape of the light channel in the plane direction of the color resist layer is rectangular, and the area of ​​the first sub-color resist is equal to the area of ​​the second sub-color resist.

4. The display panel according to claim 3, wherein, The optical channel can be set vertically or horizontally.

5. The display panel according to claim 1, wherein, The plurality of color resists include a red color resist, a green color resist, and a blue color resist. The red color resist has two optical channels, namely a first sub-optical channel and a second sub-optical channel. The first sub-optical channel and the second sub-optical channel are arranged in a crisscross pattern, dividing the red color resist into four red sub-color resists. The four red sub-color resists are arranged in a grid pattern. The green color resist is provided with two optical channels, namely a first sub-optical channel and a second sub-optical channel. The first sub-optical channel and the second sub-optical channel are arranged in a crisscross pattern, dividing the green color resist into four green sub-color resists. The four green sub-color resists are arranged in a grid pattern. The blue color resist contains two optical channels, namely a first sub-optical channel and a second sub-optical channel. The first sub-optical channel and the second sub-optical channel are arranged in a crisscross pattern, dividing the blue color resist into four blue sub-color resists. The four blue sub-color resists are arranged in a grid pattern.

6. The display panel according to claim 1, wherein, The plurality of color resists include a red color resist, a green color resist, and a blue color resist. The area of ​​the light channel disposed within the blue color resist is larger than the area of ​​the light channel disposed within the red color resist, and the area of ​​the light channel disposed within the blue color resist is larger than the area of ​​the light channel disposed within the green color resist.

7. The display panel according to claim 6, wherein, The red color resist contains one optical channel, the green color resist contains one optical channel, and the blue color resist contains two optical channels, each optical channel having the same area. The cross-sectional shape of the light channel in the plane direction of the color resist layer is rectangular, and the shape of each light channel is strip-shaped. The light channel in the red color resist divides the red color resist into a first red sub-color resist and a second red sub-color resist. The area of ​​the first red sub-color resist and the area of ​​the second red sub-color resist are equal. The light channel within the green color resist divides the green color resist into a first green sub-color resist and a second green sub-color resist, the areas of the first green sub-color resist and the second green sub-color resist being equal; The optical channel within the blue color resist divides the blue color resist into a first blue sub-color resist, a second blue sub-color resist, and a third blue sub-color resist, with the areas of the first blue sub-color resist, the second blue sub-color resist, and the third blue sub-color resist all being equal.

8. The display panel according to claim 6, wherein, The red color resist contains one optical channel, the green color resist contains one optical channel, and the blue color resist contains two optical channels. The two optical channels in the blue color resist are arranged to overlap horizontally and vertically, and each optical channel has the same area.

9. The display panel according to claim 8, wherein, The optical channel within the red color resist divides the red color resist into a first red sub-color resist and a second red sub-color resist, and the areas of the first red sub-color resist and the second red sub-color resist are equal. The light channel within the green color resist divides the green color resist into a first green sub-color resist and a second green sub-color resist, the areas of the first green sub-color resist and the second green sub-color resist being equal; The optical channel within the blue color resist divides the blue color resist into a fourth blue sub-color resist, a fifth blue sub-color resist, a sixth blue sub-color resist, and a seventh blue sub-color resist. The areas of the fourth blue sub-color resist, the fifth blue sub-color resist, the sixth blue sub-color resist, and the seventh blue sub-color resist are all equal.

10. The display panel according to claim 2, wherein, The cross-sectional shape of the light channel in the plane direction of the color resist layer is S-shaped, the width of the light channel is smaller than the width of the blank area, and the area of ​​the first sub-color resist is equal to the area of ​​the second sub-color resist.

11. The display panel according to claim 2, wherein, The direction from the center of the color resist to the edge of the color resist is the first direction, and the width of the light channel gradually decreases along the first direction.

12. The display panel according to claim 1, wherein, Each of the color resists is provided with multiple light channels, and the cross-sectional areas of the multiple light channels are different.

13. The display panel according to claim 1, wherein, The direction from the center of the color resist to the edge of the color resist is the first direction. The thickness of the color resist gradually decreases along the first direction. The color filter substrate also includes a color resist protective layer. The color resist protective layer is disposed on the color resist layer and is located on the side of the color resist layer away from the color filter substrate. The refractive index of the color resist protective layer is greater than the refractive index of the color resist in the color resist layer.

14. The display panel according to claim 1, wherein, The plurality of color resists include a red color resist, a green color resist, a blue color resist, and a white color resist, which are arranged sequentially, with a white space between the red and green color resists, a white space between the green and blue color resists, and a white space between the blue and white color resists.

15. The display panel according to claim 1, wherein, The plurality of color resists include red color resist, green color resist and blue color resist, and the red color resist, the green color resist and the blue color resist are arranged in sequence; The optical channel within the red color resist divides the red color resist into two red sub-color resists; the optical channel within the green color resist divides the green color resist into two green sub-color resists; and the optical channel within the blue color resist divides the blue color resist into two blue sub-color resists.

16. The display panel according to claim 15, wherein, The length direction of the optical channel within the red color resist is taken as the transverse direction, the length direction of the optical channel within the green color resist is taken as the longitudinal direction, and the length direction of the optical channel within the blue color resist is taken as the transverse direction.

17. The display panel according to claim 16, wherein, In the vertical direction, if the length direction of the optical channel in the red color resist in the first row is horizontal, then the length direction of the optical channel in the red color resist in the second row is vertical; if the length direction of the optical channel in the green color resist in the first row is vertical, then the length direction of the optical channel in the green color resist in the second row is horizontal; if the length direction of the optical channel in the blue color resist in the first row is horizontal, then the length direction of the optical channel in the blue color resist in the second row is vertical.

18. The display panel according to claim 1, wherein, The color filter substrate further includes a color resist protective layer, which is disposed on the color resist layer and located on the side of the color resist layer away from the color filter substrate. The color filter substrate has a striped groove on the side facing the color resist layer. The orthographic projection of the striped groove covers the orthographic projection of the blank area. The inner surface of the striped groove is an arc surface. The width direction of the blank area is a second direction. The cross-section of the striped groove in the second direction is arc-shaped. The refractive index of the color filter substrate is less than that of the color resist protective layer, so that the light passing through the blank area is refracted towards the orthographic projection of the color resist onto the surface of the electronic paper layer.

19. The display panel according to claim 1, wherein, The light channel divides the color resist into a first sub-color resist and a second sub-color resist. The color filter substrate has a strip-shaped groove at the position corresponding to the light channel, and the orthographic projection of the strip-shaped groove covers the light channel. The inner surface of the strip-shaped groove is an arc surface, and the width direction of the blank area is the second direction. The cross-section of the strip-shaped groove in the second direction is arc-shaped.

20. A display device, wherein, The display device includes a driving circuit and a display panel as described in any one of claims 1-19, wherein the driving circuit drives the display panel to display an image.

Images