Display panel and electronic device

Abstract

The application provides a display panel and an electronic device. The display panel comprises a color film substrate, a color resistance layer, a first electrochromic layer, an electrowetting layer, and an array substrate. When the display panel is in white state display, the first electrochromic layer is in a light transmission state, light rays pass through the electrowetting layer and converge, and then pass through the first electrochromic layer, the color resistance layer, and the color film substrate in sequence; when the display panel is in dark state display, the first electrochromic layer is in a light blocking state, light rays pass through the electrowetting layer and converge, and then strike the first electrochromic layer and are blocked by the first electrochromic layer. By setting the first electrochromic layer and the electrowetting layer to cooperate with each other, the display panel can have greater brightness in white state display and improved side view light leakage, and the display panel can have smaller brightness in dark state display and improved color resistance layer edge light leakage, thereby improving the contrast ratio and the transmittance of the display panel.

Description

Technical Field

[0001] This application belongs to the field of display panel technology, specifically relating to display panels and electronic devices. Background Technology

[0002] The display panels in these related technologies have numerous optical film layers and are quite thick. Furthermore, when displaying black images, some backlight still leaks out, preventing the display of pure black; when displaying white images, the brightness is low, resulting in low contrast of the display panel. Summary of the Invention

[0003] In view of this, the first aspect of this application provides a display panel, including:

[0004] Color film substrate;

[0005] A color resist layer is disposed on one side of the color filter substrate;

[0006] A first electrochromic layer is disposed on the side of the color resist layer away from the color filter substrate and directly opposite the color resist layer. The first electrochromic layer has a light-transmitting state and a light-blocking state.

[0007] An electrowetting layer is disposed on the side of the first electrochromic layer away from the color filter substrate and directly opposite the color resist layer. The electrowetting layer can converge light.

[0008] An array substrate is disposed on the side of the electrowetting layer opposite to the color filter substrate;

[0009] When the display panel is in a white state, the first electrochromic layer is in a light-transmitting state. Light passes through the electrowetting layer and converges, then passes through the first electrochromic layer, the color resist layer, and the color filter substrate in sequence. When the display panel is in a dark state, the first electrochromic layer is in a light-blocking state. Light passes through the electrowetting layer and converges, then strikes the first electrochromic layer and is blocked by it.

[0010] The display panel provided in the first aspect of this application comprises a color filter substrate, a color resist layer, a first electrochromic layer, an electrowetting layer, and an array substrate. The first electrochromic layer has a light-transmitting state that allows light to pass through and a light-blocking state that blocks light. The electrowetting layer can concentrate light.

[0011] When the display panel is in a white state, the first electrochromic layer allows light to pass through. Specifically, light emitted from the backlight travels through the array substrate to the electrowetting layer. After being focused by the electrowetting layer, the light sequentially passes through the first electrochromic layer, the color resist layer, and the color filter substrate. By focusing the light first, more light can be emitted from the color filter substrate, thereby increasing the brightness of the display panel in a white state and improving side-view light leakage.

[0012] When the display panel is in a dark state, the first electrochromic layer can block light. Specifically, light emitted from the backlight passes through the array substrate to the electrowetting layer. After being focused by the electrowetting layer, the light reaches the first electrochromic layer and is blocked by it. By first focusing the light, more light is blocked by the first electrochromic layer, making the display panel darker in a dark state, and also improving light leakage at the edges of the color resist layer of the display panel.

[0013] Therefore, by setting the first electrochromic layer and the electrowetting layer to work together, this application enables the display panel to have greater brightness and improve side light leakage when displayed in a white state, and less brightness and improve light leakage at the edge of the color resist layer when displayed in a dark state, thereby improving the contrast and transmittance of the display panel.

[0014] The display panel further includes:

[0015] A light-shielding layer is disposed on the same side of the color filter substrate as the color resist layer, and the light-shielding layer and the color resist layer are disposed adjacent to each other.

[0016] The second electrochromic layer is disposed on the side of the light-shielding layer away from the color filter substrate and directly opposite the light-shielding layer. The second electrochromic layer has a light-transmitting state and a light-shielding state.

[0017] When the display panel is in a white state, the second electrochromic layer is in a light-transmitting state, and light passes through the second electrochromic layer and shines on the light-shielding layer; when the display panel is in a dark state, the second electrochromic layer is in a light-shielding state, and light shines on the second electrochromic layer and is blocked by it.

[0018] The display panel further includes a first electrode, a second electrode, and a third electrode. The electrowetting layer is electrically connected to the first electrode and the third electrode, and the second electrochromic layer is electrically connected to the first electrode and the second electrode.

[0019] The first electrode is disposed on the side of the array substrate facing the color filter substrate, the second electrochromic layer and the electrowetting layer are disposed on the side of the first electrode facing the color filter substrate, the third electrode is disposed on the side of the electrowetting layer facing the color filter substrate, and the second electrode is disposed on the side of the second electrochromic layer facing the color filter substrate; furthermore, the second electrode is closer to the color filter substrate than the third electrode, and the display panel further includes an insulating layer disposed between the third electrode and the second electrode.

[0020] Wherein, along the arrangement direction perpendicular to the array substrate and the color filter substrate, the display panel satisfies at least one of the following conditions:

[0021] The width of the electrowetting layer is equal to the width of the color resist layer;

[0022] The width of the first electrochromic layer is equal to the width of the color resist layer;

[0023] The width of the second electrochromic layer is equal to the width of the light-shielding layer.

[0024] The display panel further includes a reflective layer disposed on the side of the light-shielding layer away from the color filter substrate. The reflective layer is directly opposite the light-shielding layer and is closer to the light-shielding layer than the second electrochromic layer. The reflective layer is used to reflect light in a direction away from the light-shielding layer.

[0025] The display panel further includes a semi-transparent and semi-reflective layer disposed on the side of the reflective layer away from the color filter substrate. The semi-transparent and semi-reflective layer corresponds to the light-shielding layer, and the semi-transparent and semi-reflective layer and the second electrochromic layer are arranged along a direction perpendicular to the arrangement direction of the array substrate and the color filter substrate. The semi-transparent and semi-reflective layer is used to receive light reflected from the reflective layer and reflect it to the first electrochromic layer.

[0026] In this process, along the arrangement direction of the array substrate and the color filter substrate, the width of the second electrochromic layer gradually decreases and forms an inclined surface, and the semi-transparent and semi-reflective layer is disposed on the inclined surface.

[0027] The angle α between the semi-transparent and semi-reflective layer and the array substrate satisfies the following range: 10°≤α≤40°.

[0028] A second aspect of this application provides an electronic device, the electronic device including a housing and a display panel as provided in the first aspect of this application, the display panel being mounted on the housing.

[0029] The electronic device provided in the second aspect of this application, by adopting the display panel provided in the first aspect of this application, and by setting the first electrochromic layer and the electrowetting layer to cooperate with each other, enables the display panel to have greater brightness and improve side-view light leakage when displaying in a white state, and less brightness and improve light leakage at the edge of the color resist layer when displaying in a dark state, thereby improving the contrast and transmittance of the display panel. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0031] Figure 1 Cross-sectional view of a display panel provided in one embodiment of this application Figure 1 .

[0032] Figure 2for Figure 1 A cross-sectional view of the display panel in white mode.

[0033] Figure 3 for Figure 1 A cross-sectional view of the display panel in a dark state.

[0034] Figure 4 Cross-sectional view of a display panel provided in one embodiment of this application Figure 2 .

[0035] Figure 5 for Figure 4 A cross-sectional view of the display panel in white mode.

[0036] Figure 6 for Figure 4 A cross-sectional view of the display panel in a dark state.

[0037] Figure 7 Cross-sectional view of a display panel provided in one embodiment of this application Figure 3 .

[0038] Figure 8 for Figure 7 A cross-sectional view of the display panel in white mode.

[0039] Figure 9 for Figure 4 A cross-sectional view of the display panel in a dark state.

[0040] Labeling Explanation: Display panel-1, Color filter substrate-11, Color resist layer-111, Light-shielding layer-112, First electrochromic layer-12, Electrowetting layer-13, Array substrate-14, Second electrochromic layer-15, Tilted surface-151, First electrode-161, Second electrode-162, Third electrode-163, Fourth electrode-164, Fifth electrode-165, Insulating layer-17, Reflective layer-18, Semi-transparent and semi-reflective layer-19, Transparent filler layer-191. Detailed Implementation

[0041] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0042] When displaying black, some backlight leaks out, preventing the display from showing a true black. Conversely, when displaying white, the brightness is low, resulting in low contrast. Most display panels address either the darker areas or the brighter areas individually. Currently, two main methods are used to improve contrast: 1. Using stacked screens; 2. Using MiniLED (Mini Light Emitting Diode) backlighting. However, stacked screens suffer from drawbacks such as low transmittance, thicker panels, lower reliability, higher cost, and high requirements for backlight brightness. Furthermore, MiniLEDs are expensive, and without precise zoning of the backlight and display panel, true black cannot be achieved.

[0043] Please refer to this as well. Figures 1-3 , Figure 1 Cross-sectional view of a display panel provided in one embodiment of this application Figure 1 . Figure 2 for Figure 1 A cross-sectional view of the display panel in white mode. Figure 3 for Figure 1 A cross-sectional view of the display panel in a dark state.

[0044] This embodiment provides a display panel 1, which includes a color filter substrate 11, a color resist layer 111, a first electrochromic layer 12, an electrowetting layer 13, and an array substrate 14. The color resist layer 111 is disposed on one side of the color filter substrate 11. The first electrochromic layer 12 is disposed on the side of the color resist layer 111 opposite to the color filter substrate 111 and directly corresponding to the color resist layer 111; the first electrochromic layer 12 has a light-transmitting state and a light-blocking state. The electrowetting layer 13 is disposed on the side of the first electrochromic layer 12 opposite to the color filter substrate 11 and directly corresponding to the color resist layer 111; the electrowetting layer 13 is capable of converging light. The array substrate 14 is disposed on the side of the electrowetting layer 13 opposite to the color filter substrate 11.

[0045] When the display panel 1 is in a white state, the first electrochromic layer 12 is in a light-transmitting state. After light passes through the electrowetting layer 13 and converges, it passes through the first electrochromic layer 12, the color resist layer 111, and the color filter substrate 11 in sequence. When the display panel 1 is in a dark state, the first electrochromic layer 12 is in a light-blocking state. After light passes through the electrowetting layer 13 and converges, it is incident on the first electrochromic layer 12 and blocked by it.

[0046] Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order.

[0047] The display panel 1 can be a liquid crystal display (LCD) panel. The display panel 1 provided in this embodiment includes a color filter substrate 11, a color resist layer 111, and an array substrate 14. The display panel 1 also includes a backlight source disposed on the side of the array substrate 14 facing away from the color filter substrate 11. The backlight source can emit light. The array substrate 14, the color resist layer 111, and the color filter substrate 11 allow light from the backlight source to pass through. For example, the array substrate 14 is glass. The color filter substrate 11 is glass.

[0048] The display panel 1 provided in this embodiment further includes a first electrochromic layer 12. The first electrochromic layer 12 is made of an electrochromic material. By changing the voltage applied to the first electrochromic layer 12, the first electrochromic layer 12 switches between a light-transmitting state and a light-blocking state. When the first electrochromic layer 12 is in the light-transmitting state, light can pass through the first electrochromic layer 12. When the first electrochromic layer 12 is in the light-blocking state, the first electrochromic layer 12 can block light, and light cannot pass through the first electrochromic layer 12. At least a portion of the orthographic projection of the first electrochromic layer 12 on the color filter substrate 11 coincides with the orthographic projection of the color resist layer 111 on the color filter substrate 11. Optionally, the first electrochromic layer 12 is disposed on the side of the color resist layer 111 facing away from the color filter substrate 11. Optionally, the display panel 1 further includes a fifth electrode 165 and a fourth electrode 164 electrically connected to the first electrochromic layer 12. The fifth electrode 165, the first electrochromic layer 12, and the fourth electrode 164 are sequentially disposed on the side of the color resist layer 111 away from the color filter substrate 11.

[0049] The display panel 1 provided in this embodiment also includes an electrowetting layer 13. The electrowetting layer 13 can also be understood as an electrowetting device. By changing the voltage applied to the electrowetting layer 13, the electrowetting layer 13 can switch between a light-focusing state and a light-diffusing state. When the electrowetting layer 13 is in the light-focusing state, it can concentrate the received light. When the electrowetting layer 13 is in the light-diffusing state, it can disperse the received light. At least a portion of the orthographic projection of the electrowetting layer 13 onto the color filter substrate 11 coincides with the orthographic projection of the color resist layer 111 onto the color filter substrate 11. The electrowetting layer 13 corresponds directly to the first electrochromic layer 12. Optionally, the electrowetting layer 13 is disposed on the side of the array substrate 14 facing the color filter substrate 11.

[0050] The electrowetting layer 13 includes multiple spaced-apart barrier walls, with adjacent barrier walls forming a closed cavity. Each closed cavity contains a hydrophobic medium, a polar solution, and a non-polar solution. By controlling the voltage applied to the electrowetting layer 13, the polar and non-polar solutions within each closed cavity are made into either a diffused or focused state, thereby altering the emission direction of light emitted from the light source after passing through the array substrate 14 and reaching the electrowetting device. In the diffused state, the liquid within the closed cavity is in a spread-out wetted state. In the focused state, the liquid within the closed cavity is in a contracted, spherical, non-wetting state.

[0051] When the electrowetting layer 13 is in a diffused state, light passes through the electrowetting layer 13 and is dispersed, striking the color resist layer 111 and the light-shielding layer 112. This arrangement can change the angle of the light, making the range of light distribution larger, thereby ensuring sufficient side lighting for the display panel 1 and achieving a wide field of view.

[0052] When the display panel 1 is in a white state, the first electrochromic layer 12 allows light to pass through. Specifically, light emitted from the backlight passes through the array substrate 14 to the electrowetting layer 13. After being converged by the electrowetting layer 13, the light passes sequentially through the first electrochromic layer 12, the color resist layer 111, and the color filter substrate 11. By first converging the light, more light can be emitted from the color filter substrate 11, thereby increasing the brightness of the display panel 1 in a white state and improving side-view light leakage of the display panel 1.

[0053] When the display panel 1 is in a dark state, the first electrochromic layer 12 can block light. Specifically, light emitted from the backlight passes through the array substrate 14 to the electrowetting layer 13. After being converged by the electrowetting layer 13, the light is then directed to the first electrochromic layer 12 and blocked by it. By first converging the light, more light is blocked by the first electrochromic layer 12, making the display panel 1 darker in a dark state, and also improving light leakage at the edge of the color resist layer 111 of the display panel 1.

[0054] Therefore, by setting the first electrochromic layer 12 and the electrowetting layer to work together, this embodiment can make the display panel 1 brighter and improve side light leakage when displayed in white state, and less bright and improve edge light leakage of the color resist layer 111 when displayed in dark state, thereby improving the contrast and transmittance of the display panel 1.

[0055] Please refer to this as well. Figures 4-6 , Figure 4 Cross-sectional view of a display panel provided in one embodiment of this application Figure 2 . Figure 5 for Figure 4 A cross-sectional view of the display panel in white mode. Figure 6 for Figure 4 A cross-sectional view of the display panel in a dark state.

[0056] In one embodiment, the display panel 1 further includes a light-shielding layer 112 and a second electrochromic layer 15. The light-shielding layer 112 and the color resist layer 111 are disposed on the same side of the color filter substrate 11, and the light-shielding layer 112 and the color resist layer 111 are disposed adjacent to each other. The second electrochromic layer 15 is disposed on the side of the light-shielding layer 112 away from the color filter substrate 11 and directly opposite the light-shielding layer 112, and the second electrochromic layer 15 has a light-transmitting state and a light-shielding state.

[0057] When the display panel 1 is in a white state, the second electrochromic layer 15 is in a light-transmitting state, and light passes through the second electrochromic layer 15 and is emitted to the light-shielding layer 112; when the display panel 1 is in a dark state, the second electrochromic layer 15 is in a light-shielding state, and light is emitted to the second electrochromic layer 15 and blocked by it.

[0058] The display panel 1 provided in this embodiment further includes a light-shielding layer 112 and a second electrochromic layer 15. The light-shielding layer 112 can also be understood as a black matrix. The second electrochromic layer 15 is made of an electrochromic material. By changing the voltage applied to the second electrochromic layer 15, the second electrochromic layer 15 is switched between a light-transmitting state and a light-shielding state. When the second electrochromic layer 15 is in the light-transmitting state, light can pass through the second electrochromic layer 15. When the second electrochromic layer 15 is in the light-shielding state, the second electrochromic layer 15 can block light, and light cannot pass through the second electrochromic layer 15. At least a portion of the orthographic projection of the second electrochromic layer 15 on the color filter substrate 11 coincides with the orthographic projection of the light-shielding layer 112 on the color filter substrate 11. Optionally, the second electrochromic layer 15 is disposed on the side of the array substrate 14 facing the color filter substrate 11 and is disposed adjacent to the electrowetting layer 13.

[0059] When the display panel 1 is in a white state, the light emitted from the backlight passes through the array substrate 14 to the second electrochromic layer 15, passes through the second electrochromic layer 15, and then reaches the light-shielding layer 112. This does not reduce the brightness of the display panel 1 in the white state. When the display panel 1 is in a dark state, the light emitted from the backlight passes through the array substrate 14 to the second electrochromic layer 15, and is blocked by the second electrochromic layer 15. This improves the light leakage at the edge of the light-shielding layer 112 of the display panel 1, making the display panel 1 darker in the dark state and improving the contrast and transmittance of the display panel 1.

[0060] Please refer to Figure 4In one embodiment, the display panel 1 further includes a first electrode 161, a second electrode 162, and a third electrode 163, the electrowetting layer 13 is electrically connected to the first electrode 161 and the third electrode 163, and the second electrochromic layer 15 is electrically connected to the first electrode 161 and the second electrode 162.

[0061] The first electrode 161 is electrically connected to both the electrowetting layer 13 and the second electrochromic layer 15. The first electrode 161 can also be understood as a common electrode for both the electrowetting layer 13 and the second electrochromic layer 15. The first electrode 161, the second electrode 162, and the third electrode 163 all allow light to pass through. This embodiment, by having the electrowetting layer 13 and the second electrochromic layer 15 share the first electrode 161, allows for synchronous control of the voltages of both layers. It also allows for the application of different voltages to the electrowetting layer 13 and the second electrochromic layer 15, and simultaneously changes the voltages of both layers. This not only reduces the operational difficulty of the display panel 1 and minimizes the time difference between the changes in the corresponding states of the electrowetting layer 13 and the second electrochromic layer 15, but also improves the display effect of the display panel 1.

[0062] Please refer to Figure 4 In one embodiment, the first electrode 161 is disposed on the side of the array substrate 14 facing the color filter substrate 11, the second electrochromic layer 15 and the electrowetting layer 13 are disposed on the side of the first electrode 161 facing the color filter substrate 11, the third electrode 163 is disposed on the side of the electrowetting layer 13 facing the color filter substrate 11, and the second electrode 162 is disposed on the side of the second electrochromic layer 15 facing the color filter substrate 11; furthermore, the second electrode 162 is closer to the color filter substrate 11 than the third electrode 163, and the display panel 1 further includes an insulating layer 17 disposed between the third electrode 163 and the second electrode 162. Along the arrangement direction from the color filter substrate 11 to the array substrate 14, the height of the second electrochromic layer 15 is greater than the height of the electrowetting layer 13. Along the arrangement direction from the color filter substrate 11 to the array substrate 14, the second electrode 162, the second electrochromic layer 15, and the first electrode 161 are sequentially disposed on the side of the array substrate 14 facing the color filter substrate 11; and the second electrode 162, the insulating layer 17, the third electrode 163, the electrowetting layer 13, and the first electrode 161 are sequentially disposed on the side of the array substrate 14 facing the color filter substrate 11. For example, the second electrode 162 and the first electrode 161 are both planar structures covering the entire surface.

[0063] This embodiment provides a second electrochromic layer 15 and an electrowetting layer 13 on the array substrate 14. The second electrochromic layer 15 and the electrowetting layer 13 share a common first electrode 161, which, in conjunction with the first electrochromic layer 12, makes the display panel 1 brighter and reduces side light leakage when displayed in a white state, and lower in brightness and reduces light leakage at the edge of the color resist layer 111 when displayed in a dark state, thereby improving the contrast and transmittance of the display panel 1.

[0064] Please refer to this as well. Figures 1-6 In one embodiment, along a direction perpendicular to the arrangement of the array substrate 14 and the color filter substrate 11, the display panel 1 satisfies at least one of the following conditions: the width of the electrowetting layer 13 (e.g., ... Figure 1 H1 in the figure) is equal to the width of the color resist layer 111 (as shown in the figure). Figure 1 (as shown in H2); and / or the width of the first electrochromic layer 12 (as shown in H2); Figure 1 As shown in H3 in the figure, it is equal to the width of the color resist layer 111 (e.g., H3). Figure 1 (as shown in H2); and / or the width of the second electrochromic layer 15 (as shown in H2); Figure 4 H4 in the figure) is equal to the width of the light-shielding layer 112 (as shown in the figure). Figure 4 (as shown in H5).

[0065] The orthographic projection of the electrowetting layer 13 on the color filter substrate 11 completely coincides with the orthographic projection of the color resist layer 111 on the color filter substrate 11. And / or, the orthographic projection of the first electrochromic layer 12 on the color filter substrate 11 completely coincides with the orthographic projection of the color resist layer 111 on the color filter substrate 11. And / or, the orthographic projection of the second electrochromic layer 15 on the color filter substrate 11 completely coincides with the orthographic projection of the light-shielding layer 112 on the color filter substrate 11.

[0066] This embodiment improves the contrast and transmittance of the display panel 1 by limiting the width relationship between the electrowetting layer 13 and the color resist layer 111 to ensure that more light gathered by the electrowetting layer can pass through the color resist layer 111, thus improving side-view light leakage; and / or the width relationship between the first electrochromic layer 12 and the color resist layer 111 to ensure that the first electrochromic layer 12 can block more light from passing through the color resist layer 111, thus improving edge light leakage of the color resist layer 111; and / or the width relationship between the second electrochromic layer 15 and the light-shielding layer 112 to ensure that the second electrochromic layer 15 can block more light from reaching the light-shielding layer 112, thus improving edge light leakage of the light-shielding layer 112.

[0067] Please refer to this as well. Figures 4-6In one embodiment, the display panel 1 further includes a reflective layer 18 disposed on the side of the light-shielding layer 112 away from the color filter substrate 11. The reflective layer 18 is directly opposite the light-shielding layer 112, and the reflective layer 18 is closer to the light-shielding layer 112 than the second electrochromic layer 15. The reflective layer 18 is used to reflect light in a direction away from the light-shielding layer 112.

[0068] A reflective layer 18 is disposed on the side of the light-shielding layer 112 facing away from the color filter substrate 11. At least a portion of the orthographic projection of the reflective layer 18 onto the color filter substrate 11 coincides with the orthographic projection of the light-shielding layer 112 onto the color filter substrate 11. Optionally, along the arrangement direction perpendicular to the array substrate 14 and the color filter substrate 11, the width of the reflective layer 18 is equal to the width of the light-shielding layer 112.

[0069] The reflective layer 18 can reflect light in a direction away from the light-shielding layer 112. Alternatively, it can be understood that the reflective layer 18 can reflect light in a direction closer to the array substrate 14. In this embodiment, by providing a reflective layer 18 on the side of the light-shielding layer 112 away from the color filter substrate 11 to reflect light, the reflective layer 18 is provided to improve side-view light leakage of the display panel 1 when it is in a white state, and to make the display panel 1 darker when it is in a dark state. This improves light leakage at the edge of the color resist layer 111 of the display panel 1, thereby increasing the contrast and transmittance of the display panel 1.

[0070] Please refer to this as well. Figures 7-9 , Figure 7 Cross-sectional view of a display panel provided in one embodiment of this application Figure 3 . Figure 8 for Figure 7 A cross-sectional view of the display panel in white mode. Figure 9 for Figure 4 A cross-sectional view of the display panel in a dark state.

[0071] In one embodiment, the display panel 1 further includes a semi-transparent and semi-reflective layer 19 disposed on the side of the reflective layer 18 away from the color filter substrate 11. The semi-transparent and semi-reflective layer 19 corresponds to the light-shielding layer 112, and the semi-transparent and semi-reflective layer 19 and the second electrochromic layer 15 are arranged along a direction perpendicular to the arrangement direction of the array substrate 14 and the color filter substrate 11. The semi-transparent and semi-reflective layer 19 is used to receive light reflected from the reflective layer 18 and reflect it to the first electrochromic layer 12.

[0072] The display panel 1 provided in this embodiment further includes a semi-transparent and semi-reflective layer 19. Light from the backlight can pass through the semi-transparent and semi-reflective layer 19. Light from the reflective layer 18 cannot pass through the semi-transparent and semi-reflective layer 19 and is reflected by the semi-transparent and semi-reflective layer 19 to the first electrochromic layer 12. Specifically, when the display panel 1 is in a white state, light from the backlight can pass through the semi-transparent and semi-reflective layer 19 and / or the second electrochromic layer 15 and be incident on the reflective layer 18. After being reflected by the reflective layer 18, at least a portion of the light is received by the semi-transparent and semi-reflective layer 19 and reflected to the first electrochromic layer 12. The light then sequentially passes through the first electrochromic layer and the color resist layer 111.

[0073] This embodiment, by setting a semi-transparent and semi-reflective layer 19 in conjunction with a reflective layer 18, reuses the light under the light-shielding layer 112 without blocking the backlight, thereby improving the display brightness and thus increasing the transmittance. At the same time, the increase in brightness of the display panel 1 when it is in white state also increases the contrast of the display panel 1.

[0074] In addition, when the display panel 1 is in a dark state, some of the light that hits the reflective layer 18 can also be reflected by the reflective layer 18 and received by the semi-transparent and semi-reflective layer 19 and reflected to the first electrochromic layer 12, where it is blocked by the first electrochromic layer 12, thereby reducing light leakage at the edges of the light-shielding layer 112 and the color resist layer 111.

[0075] Please refer to Figure 7 In one embodiment, along the arrangement direction of the array substrate 14 and the color filter substrate 11, the width of the second electrochromic layer 15 gradually decreases and forms an inclined surface 151, and the semi-transparent and semi-reflective layer 19 is disposed on the inclined surface 151.

[0076] The second electrochromic layer 15 has at least one inclined surface 151. A semi-transparent and semi-reflective layer 19 is disposed on the inclined surface 151. Optionally, the display panel 1 further includes a transparent filler layer 191 disposed between the semi-transparent and semi-reflective layer 19 and the second electrode 162. The surface of the transparent filler layer 191 facing away from the array substrate 14 is flush with the surface of the second electrochromic layer 15 facing away from the array substrate 14.

[0077] In this embodiment, by tilting the semi-transparent and semi-reflective layer 19, it is beneficial for the semi-transparent and semi-reflective layer 19 to reflect more light to the first electrochromic layer 12, thereby further improving the display brightness and further improving the transmittance. At the same time, the display panel 1 further increases the brightness when displaying in white state, and further increases the contrast of the display panel 1.

[0078] Please refer to Figure 7 In one embodiment, the angle α between the semi-transparent and semi-reflective layer 19 and the array substrate 14 satisfies the following range: 10°≤α≤40°.

[0079] The angle α between the semi-transparent and semi-reflective layer 19 and the array substrate 14 can be 10°, 15°, 20°, 25°, 30°, 35°, or 40°, etc. When the angle α between the semi-transparent and semi-reflective layer 19 and the array substrate 14 is between 10° and 40°, the semi-transparent and semi-reflective layer 19 can ensure that all reflected light can reach the first electrochromic layer 12. If the angle α between the semi-transparent and semi-reflective layer 19 and the array substrate 14 is greater than 40°, light will be reflected by the semi-transparent and semi-reflective layer 19 to the electrowetting layer, interfering with the electrowetting layer; if the angle α between the semi-transparent and semi-reflective layer 19 and the array substrate 14 is less than 10°, light will be reflected again by the semi-transparent and semi-reflective layer 19 to the reflective layer 18, causing light to be reflected multiple times between the reflective layer 18 and the semi-transparent and semi-reflective layer 19, interfering with other components and reducing the light emission effect of the display panel 1.

[0080] In one embodiment, when the display panel 1 is in a dark state, voltages are applied to the first electrode 161 and the second electrode 162 respectively, and the second electrochromic layer 15 is in a light-blocking state. Light emitted from the backlight and propagating directly below the second electrochromic layer 15 is blocked and absorbed by the second electrochromic layer 15 and cannot reach the color filter substrate 11, making the dark state even darker.

[0081] The voltage of the third electrode 163 and the first electrode 161 is controlled to form a voltage difference greater than a preset value. The non-polar solutions in the electrowetting layer are in a focused state (both polar and non-polar solutions are transparent solutions). The light that propagates through the array substrate 14 to the electrowetting layer is refracted by the non-polar solutions in the focused state in the closed cavity and then emitted vertically (so that there is no light convergence at the edge of the light-shielding layer 112, which improves the light leakage in the dark state).

[0082] Simultaneously controlling the fourth electrode 164 and the fifth electrode 165, the first electrochromic layer 12 is in a light-blocking state, blocking and absorbing the light emitted after passing through the electrowetting layer. This design makes the display panel 1 darker when displayed in a dark state, improving the contrast of the display panel 1 and also reducing light leakage.

[0083] In another embodiment, when the display panel 1 is in a white state, neither the first electrochromic layer 12 nor the second electrochromic layer 15 is subjected to voltage. The first electrochromic layer 12 and the second electrochromic layer 15 are in a transparent and light-transmitting state. The light emitted from the backlight to the light-shielding layer 112 is reflected by the reflective layer 18 below it and onto the semi-transparent and semi-reflective layer 19 on the second electrochromic layer 15. This part of the light is reflected by the semi-transparent and semi-reflective layer 19 and emitted from the adjacent color resist layer 111. The light under the light-shielding layer 112 is reused, which improves the display brightness and thus improves the transmittance. At the same time, the increase in white state brightness also increases the contrast of the display panel 1.

[0084] The voltage applied to the third electrode 163 is controlled, and a voltage difference is formed between the third electrode 163 and the first electrode 161. The non-polar solution in the electrowetting layer is in a focused state. Light from all directions passing through the electrowetting layer is refracted by the focused non-polar solution and then emitted from the color resist layer 111 directly above it, thus improving the side-view light leakage of the display panel 1.

[0085] Therefore, this embodiment controls the voltages of the electrochromic layer and the electrowetting layer separately, resulting in lower brightness of the display panel 1 in the black state while improving light leakage at the edge of the light-shielding layer 112; and higher brightness of the display panel 1 in the bright state and during image display, while also improving side-view light leakage. This design improves the contrast of the display panel 1, reduces light leakage, and enhances transmittance.

[0086] Please refer to this as well. Figures 1-9 This application also provides an electronic device, which includes a housing and a display panel 1 as described above, the display panel 1 being mounted on the housing.

[0087] The electronic device provided in this embodiment, by adopting the display panel 1 provided above in this application, and by setting the first electrochromic layer 12 and the electrowetting layer to cooperate with each other, enables the display panel 1 to have greater brightness and improve side-view light leakage when displayed in a white state, and less brightness and improve edge light leakage of the color resist layer 111 when displayed in a dark state, thereby improving the contrast and transmittance of the display panel 1.

[0088] The above provides a detailed description of the embodiments provided in this application. This document elucidates and explains the principles and implementation methods of this application. The above description is only intended to help understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display panel, characterized in that, include: Color film substrate; A color resist layer is disposed on one side of the color filter substrate; A first electrochromic layer is disposed on the side of the color resist layer away from the color filter substrate and directly opposite the color resist layer. The first electrochromic layer has a light-transmitting state and a light-blocking state. An electrowetting layer is disposed on the side of the first electrochromic layer away from the color filter substrate and directly opposite the color resist layer. The electrowetting layer can converge light. An array substrate is disposed on the side of the electrowetting layer opposite to the color filter substrate; When the display panel is in a white state, the first electrochromic layer is in a light-transmitting state. Light passes through the electrowetting layer and converges, then passes through the first electrochromic layer, the color resist layer, and the color filter substrate in sequence. When the display panel is in a dark state, the first electrochromic layer is in a light-blocking state. Light passes through the electrowetting layer and converges, then strikes the first electrochromic layer and is blocked by it. A light-shielding layer is disposed on the same side of the color filter substrate as the color resist layer, and the light-shielding layer and the color resist layer are disposed adjacent to each other. The second electrochromic layer is disposed on the side of the light-shielding layer away from the color filter substrate and directly opposite the light-shielding layer. The second electrochromic layer has a light-transmitting state and a light-shielding state. When the display panel is in a white state, the second electrochromic layer is in a light-transmitting state, and light passes through the second electrochromic layer and shines on the light-shielding layer; when the display panel is in a dark state, the second electrochromic layer is in a light-shielding state, and light shines on the second electrochromic layer and is blocked by it.

2. The display panel as described in claim 1, characterized in that, The display panel further includes a first electrode, a second electrode, and a third electrode. The electrowetting layer is electrically connected to the first electrode and the third electrode, and the second electrochromic layer is electrically connected to the first electrode and the second electrode.

3. The display panel as described in claim 2, characterized in that, The first electrode is disposed on the side of the array substrate facing the color filter substrate, the second electrochromic layer and the electrowetting layer are disposed on the side of the first electrode facing the color filter substrate, the third electrode is disposed on the side of the electrowetting layer facing the color filter substrate, and the second electrode is disposed on the side of the second electrochromic layer facing the color filter substrate; furthermore, the second electrode is closer to the color filter substrate than the third electrode, and the display panel further includes an insulating layer disposed between the third electrode and the second electrode.

4. The display panel as described in claim 1, characterized in that, Along the alignment direction perpendicular to the array substrate and the color filter substrate, the display panel satisfies at least one of the following conditions: The width of the electrowetting layer is equal to the width of the color resist layer; The width of the first electrochromic layer is equal to the width of the color resist layer; The width of the second electrochromic layer is equal to the width of the light-shielding layer.

5. The display panel as described in claim 1, characterized in that, The display panel further includes a reflective layer disposed on the side of the light-shielding layer away from the color filter substrate. The reflective layer is directly opposite the light-shielding layer and is closer to the light-shielding layer than the second electrochromic layer. The reflective layer is used to reflect light in a direction away from the light-shielding layer.

6. The display panel as described in claim 5, characterized in that, The display panel further includes a semi-transparent and semi-reflective layer disposed on the side of the reflective layer away from the color filter substrate. The semi-transparent and semi-reflective layer corresponds to the light-shielding layer, and the semi-transparent and semi-reflective layer and the second electrochromic layer are arranged in a direction perpendicular to the array substrate and the color filter substrate. The semi-transparent and semi-reflective layer is used to receive light reflected from the reflective layer and reflect it to the first electrochromic layer.

7. The display panel as described in claim 6, characterized in that, Along the arrangement direction of the array substrate and the color filter substrate, the width of the second electrochromic layer gradually decreases and forms an inclined surface, and the semi-transparent and semi-reflective layer is disposed on the inclined surface.

8. The display panel as described in claim 7, characterized in that, The angle α between the semi-transparent and semi-reflective layer and the array substrate satisfies the following range: 10°≤α≤40°.

9. An electronic device, characterized in that, The electronic device includes a housing and a display panel as described in any one of claims 1-8, the display panel being mounted on the housing.

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