Display panel, control method of display panel, and display device

Abstract

This application discloses a display panel, a control method for the display panel, and a display device, mainly relating to the field of display technology. A privacy pixel unit is located between two display pixel units; a controllable vertical reflection module is disposed on a substrate, and the controllable vertical reflection module includes multiple vertical reflection sub-modules, which together form a parabolic surface on the side facing away from the substrate; the parabolic surface of the vertical reflection sub-module can switch between a reflective state and a non-reflective state; a light-emitting module is disposed on the side of the controllable vertical reflection module facing away from the substrate, a semi-cylindrical reflective surface is disposed on the side of the light-emitting module facing away from the parabolic surface, and a refractive concave surface is disposed on the side of the semi-cylindrical reflective surface facing away from the light-emitting module; and the light-emitting module is located at the focal point of the parabolic surface and also at the center of the semi-cylindrical reflective surface. Through the above design, the display panel can switch between a privacy mode and a sharing mode.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a control method for the display panel, and a display device. Background Technology

[0002] The privacy protection feature can prevent others from peeping at the content being read or sensitive notifications. For example, when an e-paper display device is used in a public place, the e-paper display device can switch to privacy protection mode with one click, limiting the viewing angle to within ±30°, protecting user privacy and preventing third-party peeping.

[0003] However, the privacy angle of traditional display devices is fixed and cannot be adjusted. Therefore, how to make the privacy angle adjustable has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this application is to provide a display panel, a control method for the display panel, and a display device, thereby enabling the display panel to switch between privacy mode and sharing mode.

[0005] This application discloses a display panel, which includes a substrate, a plurality of display pixel units and a plurality of privacy pixel units, wherein the display pixel units and the privacy pixel units are both disposed on the substrate, and the privacy pixel units are located between two of the display pixel units; The privacy pixel unit includes a light-emitting module, a semi-cylindrical reflective surface, a controllable vertical reflective module, and a refractive concave surface. The controllable vertical reflective module is disposed on the substrate and includes multiple vertical reflective sub-modules. The multiple vertical reflective sub-modules together form a parabolic surface on the side away from the substrate. The parabolic surface of the vertical reflective sub-module can switch between a reflective state and a non-reflective state. The light-emitting module is disposed on the side of the controllable vertical reflection module away from the substrate, the semi-cylindrical reflective surface is disposed on the side of the light-emitting module away from the parabolic surface, and the refractive concave surface is disposed on the side of the semi-cylindrical reflective surface away from the light-emitting module; and the light-emitting module is located at the focal point of the parabolic surface and also at the center of the semi-cylindrical reflective surface.

[0006] Optionally, the vertical reflective submodule includes a control electrode, a particle-containing cavity, and light-reflecting particles. The control electrode and the particle-containing cavity are both disposed on the substrate. The light-reflecting particles fill the particle-containing cavity. The control electrode is used to control the movement of the light-reflecting particles within the particle-containing cavity. The sides of the multiple particle-containing cavities facing away from the substrate together form the parabolic surface.

[0007] Optionally, the vertical reflective submodule includes a control electrode and an electrochromic layer, both of which are disposed on the substrate. The control electrode controls the electrochromic layer to reflect or absorb light, and the multiple electrochromic layers on the side away from the substrate together form the parabolic surface.

[0008] Optionally, the privacy pixel unit further includes a longitudinal barrier group located between the semi-cylindrical reflective surface and the refractive concave surface, and the longitudinal barrier group includes multiple barriers.

[0009] Optionally, the plurality of display pixel units are defined as a first display pixel unit, a second display pixel unit, and a third display pixel unit, respectively. The first display pixel unit is used to display red, the second display pixel unit is used to display blue, and the third display pixel unit is used to display green. The privacy pixel unit is provided between each pair of the first display pixel unit, the second display pixel unit, and the third display pixel unit.

[0010] Optionally, the display pixel unit includes a display control electrode layer, a light control layer, and a color resist layer, wherein the display control electrode layer, the light control layer, and the color resist layer are sequentially disposed on the substrate; The side of the refractive concave surface facing away from the substrate is flush with the side of the color resist layer facing away from the substrate.

[0011] Optionally, the direction along the middle of the controllable vertical reflection module toward the display pixel units on both sides is defined as the first direction; The privacy pixel unit includes a large-angle region, a medium-angle region, and a low-angle region, and the low-angle region, the medium-angle region, and the large-angle region are arranged along the first direction; The concave surface in the large angle region is defined to refract light into a first ray, the concave surface in the medium angle region is defined to refract light into a second ray, and the concave surface in the low angle region is defined to refract light into a third ray. The angles between the first ray, the second ray, and the third ray and the light-emitting surface of the display panel decrease sequentially. The distance between two adjacent retaining walls in the large angle region is greater than the distance between two adjacent retaining walls in the medium angle region, and the distance between two adjacent retaining walls in the medium angle region is greater than the distance between two adjacent retaining walls in the low angle region.

[0012] This application also discloses a method for controlling a display panel, the method comprising the steps of: When switching to sharing mode, control the light-emitting module to not emit light and / or control all the vertical reflection submodules to switch to a non-reflective state; When switched to privacy mode, the vertical reflective submodule is controlled to reflect light, and the light-emitting module is controlled to emit light.

[0013] Optionally, the steps of controlling the vertical reflective submodule to a reflective state and controlling the light-emitting module to emit light when switching to privacy mode include: Obtain the viewing angle range that needs to be protected from peeping, and define it as the viewing angle range that needs to be protected from peeping; Control the vertical reflection submodule within the required privacy viewing angle range to be in a reflection state; Control the light-emitting module to emit light.

[0014] This application also discloses a display device, which includes a driving circuit and a display panel, wherein the driving circuit is connected to the display panel.

[0015] Compared to existing display panels, the display panel of this application emits light upwards through the light-emitting module. After the light shines on the inner wall of the semi-cylindrical reflective surface, it is reflected onto the parabolic surface formed by multiple vertical reflective sub-modules. When the parabolic surface of a specific vertical reflective sub-module is in a reflective state, the light shining on that position will be reflected vertically upwards. After being refracted by the refractive concave surface, it forms light rays at a specific angle to the light-emitting surface of the display panel, thereby interfering with the user viewing at a specific angle and achieving a privacy protection effect. This allows the display panel to switch between privacy protection mode and sharing mode. Moreover, by selecting and controlling the parabolic surface corresponding to a specific vertical reflective sub-module to switch to a reflective state, privacy protection can be achieved at a specific viewing angle. Furthermore, it eliminates the need for two light-emitting modules on the left and right sides, reducing manufacturing costs. Attached Figure Description

[0016] 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: Figure 1 This is a schematic diagram of a display device according to an embodiment of this application; Figure 2 This is a schematic diagram of a display panel according to the first embodiment of this application; Figure 3 This is an enlarged schematic diagram of a privacy pixel unit according to the first embodiment of this application; Figure 4 This is a schematic diagram of a refractive concave surface according to the first embodiment of this application; Figure 5 This is a schematic diagram of a control electrode according to the first embodiment of this application; Figure 6 This is a planar schematic diagram of a control electrode according to the first embodiment of this application; Figure 7 This is a schematic diagram of a longitudinal retaining wall assembly according to the first embodiment of this application; Figure 8 This is an enlarged schematic diagram of a longitudinal retaining wall assembly according to the first embodiment of this application; Figure 9 This is a schematic diagram of a display panel according to a second embodiment of this application; Figure 10 This is a schematic diagram of a privacy pixel unit according to a second embodiment of this application; Figure 11 This is a schematic diagram of a control method for a display panel according to an embodiment of this application; Figure 12 This is a schematic diagram of a vertical reflective submodule according to an embodiment of this application; Figure 13a This is a partial schematic diagram of a method for manufacturing a display panel according to an embodiment of this application; Figure 13b This is a schematic diagram of other parts of a method for manufacturing a display panel according to an embodiment of this application. Figure 13c This is a schematic diagram of the remaining part of a method for manufacturing a display panel according to an embodiment of this application.

[0017] Among them, 10 is a display device; 20 is a driving circuit; 30 is a display panel; 100 is a substrate; 200 is a display pixel unit; 211 is a first display pixel unit; 212 is a second display pixel unit; 213 is a third display pixel unit; 220 is a display control electrode layer; 221 is a common electrode layer; 230 is a light control layer; 231 is a microcup; 232 is white electrophoretic particles; 233 is black electrophoretic particles; 240 is a color resist layer; 300 is a privacy pixel unit; 310 is a light-emitting module; 320 is a semi-cylindrical reflective surface; 400 is a controllable vertical reflection module; 410 is a vertical reflection sub-module; 411 is a first vertical reflection sub-module; 412 is a second vertical reflection sub-module. Block; 413, Third vertical reflective submodule; 414, Fourth vertical reflective submodule; 415, Fifth vertical reflective submodule; 416, Sixth vertical reflective submodule; 420, Parabolic surface; 430, Control electrode; 431, Anode; 432, Cathode; 440, Particle-containing cavity; 451, Light-reflecting particle; 452, Light-absorbing particle; 460, Electrochromic layer; 500, Vertical barrier group; 510, Barrier; 600, Refractive concave surface; 810, Large angle region; 820, Medium angle region; 830, Low angle region; 900, Opposite substrate; 910, Privacy-proof active switch layer; 920, Filling layer; 930, Step layer; 940, Semi-cylindrical concave surface. Detailed Implementation

[0018] 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.

[0019] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0020] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0023] Figure 1 This is a schematic diagram of a display device according to an embodiment of this application, as shown below. Figure 1 As shown, this application discloses a display device 10, which includes a driving circuit 20 and a display panel 30, wherein the driving circuit 20 is connected to the display panel 30.

[0024] The driving circuit 20 controls the display panel 30 to display images, and the control circuit controls the switching between the privacy mode and the sharing mode of the display panel 30.

[0025] 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: Example 1: Figure 2 This is a schematic diagram of a display panel according to the first embodiment of this application. Figure 3 This is an enlarged schematic diagram of a privacy pixel unit according to the first embodiment of this application, as shown below. Figures 2-3 As shown, this application discloses a display panel 30, which includes a substrate 100, a plurality of display pixel units 200 and a plurality of privacy pixel units 300. The display pixel units 200 and the privacy pixel units 300 are both disposed on the substrate 100, and the privacy pixel units 300 are located between two of the display pixel units 200.

[0026] The privacy pixel unit 300 includes a light-emitting module 310, a semi-cylindrical reflective surface 320, a controllable vertical reflective module 400, and a refractive concave surface 600. The controllable vertical reflective module 400 is disposed on the substrate 100 and includes multiple vertical reflective sub-modules 410. The multiple vertical reflective sub-modules 410 together form a parabolic surface 420 on the side away from the substrate 100. The parabolic surface 420 of the vertical reflective sub-module 410 can switch between a reflective state and a non-reflective state.

[0027] The non-reflective state includes a state that absorbs light and a state in which light can pass through the parabolic surface 420 without being reflected. It can be understood that at the position of the parabolic surface 420, each of the vertical reflective sub-modules 410 can switch between the reflective state and the non-reflective state.

[0028] The light-emitting module 310 is disposed on the side of the controllable vertical reflection module 400 away from the substrate 100, the semi-cylindrical reflective surface 320 is disposed on the side of the light-emitting module 310 away from the parabolic surface 420, and the refractive concave surface 600 is disposed on the side of the semi-cylindrical reflective surface 320 away from the light-emitting module 310; and the light-emitting module 310 is located at the focal point of the parabolic surface 420 and also at the center of the semi-cylindrical reflective surface 320.

[0029] For example, the display pixel units 200 may be arranged in a matrix, and the privacy pixel units 300 are located between two adjacent columns of display pixel units 200 in the vertical direction, and the number of privacy pixel units 300 arranged between two adjacent columns of display pixel units 200 in the vertical direction is unlimited.

[0030] For example, the display pixel units 200 may be arranged in a matrix, and the privacy pixel units 300 are located between two adjacent rows of display pixel units 200 in the horizontal direction, and the number of privacy pixel units 300 arranged between two adjacent rows of display pixel units 200 in the vertical direction is unlimited.

[0031] For ease of explanation, this application takes the display panel 30 as a micro-cup shaped electronic paper display panel 30 as an example. The display pixel unit 200 includes a display control electrode layer 220, a light control layer 230 and a color resist layer 240. The display control electrode layer 220, the light control layer 230 and the color resist layer 240 are sequentially disposed on the substrate 100.

[0032] The light control layer 230 includes a microcup 231, white electrophoretic particles 232, and black electrophoretic particles 233. The white electrophoretic particles 232 and black electrophoretic particles 233 are located inside the microcup 231. The display control electrode layer 220 is used to control the up and down movement of the white electrophoretic particles 232 and the black electrophoretic particles 233. The white electrophoretic particles 232 and the black electrophoretic particles 233 are used to reflect and absorb light to achieve the display of the image.

[0033] For example, the display control electrode layer 220 includes pixel electrodes and a common electrode layer 221. For example, an electric field is formed between the pixel electrodes and the common electrode layer 221 to drive the movement of electrophoretic particles within the light control layer 230.

[0034] For example, the display panel 30 further includes an opposing substrate 900 and a privacy active switch layer 910. The privacy active switch layer 910 is disposed on the opposing substrate 900 and is connected to the light-emitting module 310 for controlling the operation of the light-emitting module 310. The privacy active switch layer 910 is also connected to the vertical reflection submodule 410 for controlling the vertical reflection submodule 410 to switch between a reflection state and a non-reflection state.

[0035] For example, the privacy protection active switch layer 910 and the refractive concave surface 600 are sequentially disposed on the opposing substrate 900.

[0036] It is understood that the light-emitting module 310 emits light upwards. After the light shines on the inner wall of the semi-cylindrical reflective surface 320, it will be reflected onto the parabolic surface 420 formed by multiple vertical reflective sub-modules 410. For example, when the parabolic surface 420 of some vertical reflective sub-modules 410 is in a reflective state, the light shining on that position will be reflected vertically upwards, so that after being refracted by the refractive concave surface 600, light is formed at a specific angle, thereby interfering with the user viewing from a specific angle and achieving the effect of preventing peeping.

[0037] Compared to existing display panels, the display panel 30 of this application emits light upwards through the light-emitting module 310. After the light shines on the inner wall of the semi-cylindrical reflective surface 320, it is reflected onto the parabolic surface 420 formed by multiple vertical reflective sub-modules 410. When the parabolic surface 420 of a specific vertical reflective sub-module 410 is in a reflective state, the light shines on that position and is reflected vertically upwards. Then, after being refracted by the refractive concave surface 600, light rays are formed at a specific angle to the light-emitting surface of the display panel 30, thereby interfering with the user viewing at a specific angle and achieving the effect of privacy protection. This enables switching between privacy protection mode and sharing mode.

[0038] Furthermore, by selecting and controlling the parabolic surface 420 corresponding to a specific vertical reflective submodule 410 to switch to a reflective state, privacy protection can be achieved under a specific viewing angle, and there is no need to set up two light-emitting modules 310 on the left and right, thus reducing manufacturing costs.

[0039] The plurality of display pixel units 200 are respectively defined as a first display pixel unit 211, a second display pixel unit 212 and a third display pixel unit 213. The first display pixel unit 211 is used to display red, the second display pixel unit 212 is used to display blue and the third display pixel unit 213 is used to display green. The privacy pixel unit 300 is provided between each pair of the first display pixel unit 211, the second display pixel unit 212 and the third display pixel unit 213.

[0040] This means that in the privacy mode, the light emitted by each display pixel unit 200 will be interfered with by the privacy pixel unit 300, thus indicating the privacy effect in the privacy mode.

[0041] Figure 4 This is a schematic diagram of a refractive concave surface according to the first embodiment of this application, combined with... Figure 3 and Figure 4 As shown, the display pixel unit 200 includes a display control electrode layer 220, a light control layer 230, and a color resist layer 240, which are sequentially disposed on the substrate 100.

[0042] The side of the refractive concave surface 600 facing away from the substrate 100 is flush with the side of the color resist layer 240 facing away from the substrate 100.

[0043] In this way, the light passing through the refracting concave surface 600 will first pass through the corresponding color resist. The resulting interference light is no longer simple white light, but light such as red, green and blue light. In this way, the interference effect on the display pixel unit 200 is better in privacy mode, and the corresponding privacy protection effect is also better.

[0044] Figure 5 This is a schematic diagram of a control electrode according to the first embodiment of this application. Figure 6 This is a planar schematic diagram of a control electrode according to the first embodiment of this application, combined with... Figure 5 and Figure 6 As shown, in this embodiment, the vertical reflection submodule 410 includes a control electrode 430, a particle-containing cavity 440, and light-reflecting particles 451. The control electrode 430 and the particle-containing cavity 440 are both disposed on the substrate 100. The light-reflecting particles 451 fill the particle-containing cavity 440. The control electrode 430 is used to control the light-reflecting particles 451 to move up and down in the particle-containing cavity 440. The side of the multiple particle-containing cavities 440 facing away from the substrate 100 together forms the parabolic surface 420.

[0045] For example, the control electrode 430 includes an anode 431 and a cathode 432, which are respectively disposed at both ends of the particle receiving cavity 440; of course, the control electrode 430 may also include only an anode 431. When only an anode 431 is included, the anode 431 may be disposed at the top of the particle receiving cavity 440 or at the bottom of the particle receiving cavity 440.

[0046] It is understandable that when the control electrode 430 is placed on top of the particle-containing cavity 440, a transparent electrode material should be used for fabrication, and the control electrodes 430 of all corresponding vertical reflective sub-modules 410 on the same column of privacy pixel units 300 can be directly connected together.

[0047] When the control electrode 430 controls the light reflecting particle 451 to move upward, the vertical reflective submodule 410 is positioned at the parabolic surface 420. This allows the light emitted from the light-emitting module 310 and reflected by the semi-cylindrical reflective surface 320 to be reflected vertically upward. The light is then refracted by the refractive concave surface 600 to form light at a specific angle.

[0048] Of course, light-absorbing particles 452 can also be added inside the particle-containing cavity 440. In this way, by controlling the rise of light-reflecting particles 451 or controlling the rise of light-absorbing particles 452, the reflective and non-reflective states of the parabolic surface 420 can be achieved. Moreover, the light-absorbing particles 452 can be selected from nano-quantum dot particles.

[0049] Figure 7 This is a schematic diagram of a longitudinal retaining wall assembly according to the first embodiment of this application. Figure 8 This is an enlarged schematic diagram of a longitudinal retaining wall assembly according to the first embodiment of this application, combined with... Figure 7 and Figure 8 As shown, when light passes through the refractive concave surface 600, refraction and reflection occur. In order to avoid the reflected light interfering with the privacy protection at a specific viewing angle, this application also provides a longitudinal barrier group 500. Specifically, the privacy pixel unit 300 also includes a longitudinal barrier group 500, which is located between the semi-cylindrical reflective surface 320 and the refractive concave surface 600. The longitudinal barrier group 500 includes multiple barriers 510.

[0050] In this way, the light reflected back by the refracting concave surface 600 will be blocked by the barrier 510, and the light entering the privacy pixel unit 300 at a large angle will also be blocked by the barrier 510, thereby avoiding interference from light on privacy at a specific viewing angle.

[0051] For example, the barrier 510 is made of a black light-absorbing material, such as BM material. Alternatively, nano-quantum dot particles can be used, which, when excited by light, generate near-infrared light with a wavelength of 1000nm. This wavelength of infrared light can activate mitochondria to generate ATP energy while inhibiting tyrosinase activity, thus blocking melanin production at its source. Its energy is a superimposed pulsed strobe effect, not a single-point effect, which can efficiently promote collagen regeneration and metabolic circulation. It has effects such as brightening skin tone, anti-aging and firming, and refining skin texture, providing excellent health benefits.

[0052] For example, multiple retaining walls 510 may be arranged at equal intervals.

[0053] Because the light reflected from the semi-cylindrical reflective surface 320 is unevenly distributed, the light intensity is insufficient at the position of the parabolic surface 420 near the display pixel unit 200, that is, the light intensity is insufficient on both sides of the parabolic surface 420, while the light intensity is greater in the area of ​​the parabolic surface 420 away from the display pixel unit 200, that is, the light intensity is greater in the middle of the parabolic surface 420.

[0054] Therefore, the direction along the middle of the controllable vertical reflection module 400 toward the display pixel units 200 on both sides is defined as the first direction; the privacy pixel unit 300 includes a large angle region 810, a medium angle region 820 and a low angle region 830, and the low angle region 830, the medium angle region 820 and the large angle region 810 are arranged along the first direction.

[0055] The refractive concave surface 600 within the large angle region 810 refracts light into a first ray, the refractive concave surface 600 within the medium angle region 820 refracts light into a second ray, and the refractive concave surface 600 within the low angle region 830 refracts light into a third ray. The angles between the first ray, the second ray, and the third ray and the light-emitting surface of the display panel 30 decrease sequentially.

[0056] For example, the light rays from the low-angle region 830 will form an angle of approximately 70°-90° with the light-emitting surface after passing through the refractive concave surface 600, the light rays from the medium-angle region 820 will form an angle of approximately 20-70° with the light-emitting surface after passing through the refractive concave surface 600, and the light rays from the large-angle region 810 will form an angle of approximately 0-20° with the light-emitting surface after passing through the refractive concave surface 600.

[0057] The distance between two adjacent retaining walls 510 in the large angle region 810 is greater than the distance between two adjacent retaining walls 510 in the medium angle region 820, and the distance between two adjacent retaining walls 510 in the medium angle region 820 is greater than the distance between two adjacent retaining walls 510 in the low angle region 830.

[0058] This ensures that the light reflected upward from the parabolic surface 420 in the large-angle area 810 and the medium-angle area 820 is not blocked by the barrier 510 as much as possible, thereby improving the privacy protection effect. It also blocks the light reflected upward from the parabolic surface 420 in the low-angle area 830 as much as possible, thereby preventing the grayscale of the display panel 30 from decreasing.

[0059] For example, during fabrication, the display control electrode layer 220, the light control layer 230, and the controllable vertical reflection module 400 of the privacy pixel unit 300 can be fabricated on the substrate 100 first. Then, the refractive concave surface 600, the longitudinal barrier group 500, the semi-cylindrical reflective surface 320, the light-emitting module 310, and the color resist of the display pixel unit 200 of the privacy pixel unit 300 can be fabricated on another opposing substrate 100, and then they are assembled.

[0060] During fabrication, negative refractive index materials can be used to fill the spaces between the controllable vertical reflection module 400 and the light-emitting module 310, between the light-emitting module 310 and the semi-cylindrical reflective surface 320, between the semi-cylindrical reflective surface 320 and the longitudinal baffle group 500, and between the longitudinal baffle group 500 and the refractive concave surface 600. For example, the refractive index of the negative refractive index material is between -4 and -0.3. The material of the refractive concave surface 600 includes resin material, and the refractive index of the refractive concave surface 600 is approximately 1.49.

[0061] Example 2: Figure 9 This is a schematic diagram of a display panel according to a second embodiment of this application. Figure 10 This is a schematic diagram of a privacy pixel unit according to a second embodiment of this application, as shown below. Figures 9-10 As shown, unlike the first embodiment, this embodiment controls the reflection or absorption of light by the electrochromic layer 460 to allow the parabolic surface 420 of the vertical reflective submodule 410 to switch between a reflective and non-reflective state. Specifically: The vertical reflective submodule 410 includes a control electrode 430 and an electrochromic layer 460. Both the control electrode 430 and the electrochromic layer 460 are disposed on the substrate 100. The control electrode 430 controls the electrochromic layer 460 to reflect or absorb light. The side of the multiple electrochromic layers 460 facing away from the substrate 100 together forms the parabolic surface 420.

[0062] Compared to the solution in the first embodiment, the solution in this embodiment uses an electrochromic layer 460 instead of light-reflecting particles 451, making the preparation method simpler.

[0063] It should be noted that in this embodiment, an insulating layer is provided between two adjacent vertical reflective submodules 410 to separate two adjacent electrochromic layers 460 and avoid mutual interference.

[0064] Figure 11 This is a schematic diagram of a control method for a display panel according to an embodiment of this application. Figure 12This is a schematic diagram of a vertical reflective submodule according to an embodiment of this application, as shown below. Figures 11-12 As shown, this application also discloses a control method for a display panel 30, which is used to control the display panel 30. The control method for the display panel 30 includes the following steps: Sa1: When switching to sharing mode, control the light-emitting module to not emit light and / or control all the vertical reflection submodules to switch to a non-reflective state; In simple terms, when switching to sharing mode, the light-emitting module 310 can be controlled to not emit light; all the vertical reflective sub-modules 410 can be controlled to switch to a non-reflective state; or the light-emitting module 310 can be controlled to switch all the vertical reflective sub-modules 410 to a non-reflective state without controlling the light-emitting module 310.

[0065] Sa2: When switched to privacy mode, the vertical reflective submodule is controlled to reflect, and the light-emitting module is controlled to emit light.

[0066] By setting the light-emitting module 310 to emit light upwards, the light shines on the inner wall of the semi-cylindrical reflective surface 320 and is reflected onto the parabolic surface 420 formed by multiple vertical reflective sub-modules 410. When the parabolic surface 420 of a specific vertical reflective sub-module 410 is in a reflective state, the light shining on that position will be reflected vertically, and then refracted by the refractive concave surface 600 to form light at a specific angle, thereby interfering with the user viewing at a specific angle and achieving the effect of privacy protection. This enables the switching between privacy protection mode and sharing mode.

[0067] Sa2: When switching to privacy mode, the steps of controlling the vertical reflective submodule to reflective state and controlling the light-emitting module to emit light include: Sa21: Obtain the viewing angle range that needs to be protected from peeping, and define it as the viewing angle range that needs to be protected from peeping; Exemplary privacy viewing angles include unidirectional privacy with left-side privacy and right-side privacy, privacy with the same bidirectional viewing angle range of left-side first-viewing-angle range and right-side first-viewing-angle range, and privacy with different bidirectional viewing angle ranges of left-side first-viewing-angle range and right-side second-viewing-angle range.

[0068] Sa22: Control the vertical reflection submodule within the required privacy viewing angle range to be in reflection state; Sa23: Controls the light-emitting module to emit light.

[0069] The light-emitting module 310 emits light upwards. After the light shines on the inner wall of the semi-cylindrical reflective surface 320, it is reflected onto the parabolic surface 420 formed by multiple vertical reflective sub-modules 410. When the parabolic surface 420 of a specific vertical reflective sub-module 410 is in a reflective state, the light shining on that position will be reflected vertically. Moreover, the reflective state can be switched on the parabolic surface 420 formed by a specific vertical reflective sub-module 410 by selecting and controlling it, thereby achieving privacy protection under a specific viewing angle. Furthermore, it eliminates the need to set up two light-emitting modules 310 on the left and right, reducing manufacturing costs.

[0070] For example, multiple vertical reflective submodules 410 are defined as first vertical reflective submodule 411, second vertical reflective submodule 412, third vertical reflective submodule 413, fourth vertical reflective submodule 414, fifth vertical reflective submodule 415, and sixth vertical reflective submodule 416, and the light-emitting module 310 is located between the third vertical reflective submodule 413 and the fourth vertical reflective submodule 414.

[0071] The third vertical reflection submodule 413 and the fourth vertical reflection submodule 414 are used for privacy protection in the first viewing angle range; the second vertical reflection submodule 412 and the fifth vertical reflection submodule 415 are used for privacy protection in the second viewing angle range; and the first vertical reflection submodule 411 and the sixth vertical reflection submodule 416 are used for privacy protection in the third viewing angle range.

[0072] The angles between the light rays emitted from the first, second, and third viewing angles and the light-emitting surface of the display panel 30 gradually decrease, and the corresponding privacy viewing angles gradually increase.

[0073] For example, the viewing angle range that needs to be protected from peeping is obtained. When the viewing angle range that needs to be protected from peeping is the third viewing angle range, the first vertical reflection submodule 411 and the sixth vertical reflection submodule 416 are controlled to be in a reflection state; then the light-emitting module 310 is controlled to emit light.

[0074] For example, the viewing angle range that needs to be protected from peeping is obtained. When the viewing angle range that needs to be protected from peeping is the third viewing angle range on the left, the first vertical reflection submodule 411 is controlled to be in a reflection state; then the light-emitting module 310 is controlled to emit light.

[0075] For example, the viewing angle range that needs to be protected from peeping is obtained. When the viewing angle range that needs to be protected from peeping is the third viewing angle range on the right, the sixth vertical reflection submodule 416 is controlled to be in a reflection state; then the light-emitting module 310 is controlled to emit light.

[0076] Figure 13a This is a partial schematic diagram of a method for manufacturing a display panel according to an embodiment of this application. Figure 13bThis is a schematic diagram of other parts of a method for manufacturing a display panel according to an embodiment of this application. Figure 13c This is a schematic diagram of the remaining part of a method for manufacturing a display panel according to an embodiment of this application, as shown below. Figures 13a-13c As shown: For example, this application also discloses a method for manufacturing a display panel, the method being used to manufacture a display panel 30, the method comprising the steps of: Sb11: Forming a display control electrode layer on the substrate; The display control electrode layer 220 is used to control the light control layer 230 to reflect or absorb light.

[0077] Sb12: Multiple vertical reflective sub-modules are formed on the display control electrode layer to form a controllable vertical reflective module. The multiple vertical reflective sub-modules on the side away from the substrate together form a parabolic surface. The parabolic surface of the vertical reflective sub-module can switch between a reflective state and a non-reflective state. Sb13: A light control layer is formed on the display control electrode layer to obtain a first substrate; Sb21: A filling layer is formed on the opposing substrate, and a refractive concave surface is formed on the filling layer; For example, the filler layer 920 can be made of PMMA (polymethyl methacrylate). For example, the refractive concave surface 600 can be formed by die-printing, and the die can be removed after curing. For example, the refractive concave surface 600 is elongated.

[0078] Sb22: A color resist layer and a common electrode layer are formed on the filler layer; For example, the common electrode layer 221 is located on the color resist layer 240, and it is understood that the color resist layer 240 is located outside the refractive concave surface 600.

[0079] Sb23: A stepped layer is formed on the filler layer, and a semi-cylindrical reflective surface is formed on the stepped layer; The stepped layer 930 is filled with a negative refractive index material, for example, the refractive index of the negative refractive index material is between -4 and -0.3.

[0080] The semi-cylindrical reflective surface 320 can be formed by first imprinting a semi-cylindrical concave surface 940 on the stepped layer 930, and then setting a light-reflecting material on the semi-cylindrical concave surface 940; after forming the semi-cylindrical reflective surface 320, a negative refractive index material can be filled to make the surface of the stepped layer 930 flat. For example, the semi-cylindrical concave surface 940 is elongated.

[0081] Sb24: A light-emitting module is formed on the top of the semi-cylindrical reflective surface, and the light-emitting module is located at the focal point of the parabolic surface and also at the center of the semi-cylindrical reflective surface, thus obtaining a second substrate; Sb25: The first substrate and the second substrate are joined together to form a display panel.

[0082] The privacy pixel unit 300 is formed by the light-emitting module 310, the semi-cylindrical reflective surface 320, the controllable vertical reflective module 400, and the refractive concave surface 600; the display control electrode layer 220, the light control layer 230, and the color resist layer 240 form the display pixel unit 200; and the privacy pixel unit 300 is located between two display pixel units 200.

[0083] The technical solution of this application can be widely used in various display panels 30, such as TN (Twisted Nematic) display panels 30, IPS (In-Plane Switching) display panels 30, VA (Vertical Alignment) display panels 30, MVA (Multi-Domain Vertical Alignment) display panels 30, and of course, other types of display panels 30, such as OLED (Organic Light-Emitting Diode) display panels 30, are all applicable to the above solution.

[0084] It should be noted that the limitations on each step involved in this solution are not considered as limiting the order of steps, provided that they do not affect the implementation of the specific solution. The steps listed first can be executed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the scope of protection of this application.

[0085] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0086] 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, characterized in that, The display panel includes a substrate, a plurality of display pixel units and a plurality of privacy pixel units, wherein the display pixel units and the privacy pixel units are both disposed on the substrate, and the privacy pixel units are located between two of the display pixel units; The privacy pixel unit includes a light-emitting module, a semi-cylindrical reflective surface, a controllable vertical reflective module, and a refractive concave surface. The controllable vertical reflective module is disposed on the substrate and includes multiple vertical reflective sub-modules. The multiple vertical reflective sub-modules together form a parabolic surface on the side away from the substrate. The parabolic surface of the vertical reflective sub-module can switch between a reflective state and a non-reflective state. The light-emitting module is disposed on the side of the controllable vertical reflection module away from the substrate, the semi-cylindrical reflective surface is disposed on the side of the light-emitting module away from the parabolic surface, and the refractive concave surface is disposed on the side of the semi-cylindrical reflective surface away from the light-emitting module; and the light-emitting module is located at the focal point of the parabolic surface and also at the center of the semi-cylindrical reflective surface.

2. The display panel according to claim 1, characterized in that, The vertical reflective submodule includes a control electrode, a particle-containing cavity, and light-reflecting particles. The control electrode and the particle-containing cavity are both disposed on the substrate. The light-reflecting particles fill the particle-containing cavity. The control electrode is used to control the movement of the light-reflecting particles within the particle-containing cavity. The side of the multiple particle-containing cavities facing away from the substrate together forms the parabolic surface.

3. The display panel according to claim 1, characterized in that, The vertical reflective submodule includes a control electrode and an electrochromic layer, both of which are disposed on the substrate. The control electrode controls the electrochromic layer to reflect or absorb light, and the side of the multiple electrochromic layers facing away from the substrate together forms the parabolic surface.

4. The display panel according to claim 2 or 3, characterized in that, The privacy pixel unit also includes a longitudinal barrier group, which is located between the semi-cylindrical reflective surface and the refractive concave surface, and the longitudinal barrier group includes multiple barriers.

5. The display panel according to claim 1, characterized in that, The plurality of display pixel units are respectively defined as a first display pixel unit, a second display pixel unit and a third display pixel unit. The first display pixel unit is used to display red, the second display pixel unit is used to display blue and the third display pixel unit is used to display green. The privacy pixel unit is provided between each pair of the first display pixel unit, the second display pixel unit and the third display pixel unit.

6. The display panel according to claim 1, characterized in that, The display pixel unit includes a display control electrode layer, a light control layer, and a color resist layer, wherein the display control electrode layer, the light control layer, and the color resist layer are sequentially disposed on the substrate; The side of the refractive concave surface facing away from the substrate is flush with the side of the color resist layer facing away from the substrate.

7. The display panel according to claim 4, characterized in that, The direction along the middle of the controllable vertical reflection module toward the display pixel units on both sides is defined as the first direction; The privacy pixel unit includes a large-angle region, a medium-angle region, and a low-angle region, and the low-angle region, the medium-angle region, and the large-angle region are arranged along the first direction; The concave surface in the large angle region is defined to refract light into a first ray, the concave surface in the medium angle region is defined to refract light into a second ray, and the concave surface in the low angle region is defined to refract light into a third ray. The angles between the first ray, the second ray, and the third ray and the light-emitting surface of the display panel decrease sequentially. The distance between two adjacent retaining walls in the large angle region is greater than the distance between two adjacent retaining walls in the medium angle region, and the distance between two adjacent retaining walls in the medium angle region is greater than the distance between two adjacent retaining walls in the low angle region.

8. A method for controlling a display panel, characterized in that, The control method for the display panel is used to control the display panel as described in any one of claims 1-7, and the control method for the display panel includes the following steps: When switching to sharing mode, control the light-emitting module to not emit light and / or control all the vertical reflection submodules to switch to a non-reflective state; When switched to privacy mode, the vertical reflective submodule is controlled to reflect light, and the light-emitting module is controlled to emit light.

9. The control method according to claim 8, characterized in that, The steps of controlling the vertical reflective submodule to reflect light and controlling the light-emitting module to emit light when switching to privacy mode include: Obtain the viewing angle range that needs to be protected from peeping, and define it as the viewing angle range that needs to be protected from peeping; Control the vertical reflection submodule within the required privacy viewing angle range to be in a reflection state; Control the light-emitting module to emit light.

10. A display device, the display device comprising a driving circuit and a display panel as described in any one of claims 1-7, the driving circuit being connected to the display panel.

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