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

Abstract

The application discloses a kind of privacy panels, display device and the control method of display device, mainly related to display technical field, first privacy structure is located at the side of first light emitting unit away from privacy substrate, and first privacy structure is used to set corresponding pixel spacing area;First cavity is recessed to form the first arc surface of semicircle near the side of first light emitting unit, and first light emitting unit is located in any one of the two focal points of first arc surface;First dam is set in first cavity, and first cavity is divided into multiple first sub-chambers;Light control unit is set in first sub-chamber, upper control electrode is located in light control unit side close to privacy substrate, lower control electrode is located in light control unit side away from privacy substrate, and upper control electrode and lower control electrode are used to drive light control unit to absorb light or reflect light.Through the above design, it can be switched to different viewing angle range to realize the effect of anti-peeping.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a privacy panel, a display device, and a method for controlling the 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 privacy panel, a display device, and a control method for the display device, so as to achieve the privacy function by switching between different viewing angles.

[0005] This application discloses a privacy panel used in a display panel, the display panel including a plurality of pixel units, with a pixel gap area formed between two adjacent pixel units;

[0006] The privacy panel includes a privacy substrate, a first light-emitting unit, and a first privacy structure. The first light-emitting unit is disposed on the privacy substrate, and the first privacy structure is located on the side of the first light-emitting unit away from the privacy substrate. The first privacy structure is configured to correspond to the pixel spacing area.

[0007] The first privacy structure includes a first chamber, a first barrier wall, and multiple first sub-privacy structures. The first chamber is recessed on the side near the first light-emitting unit to form a semi-elliptical first arc-shaped surface. The first light-emitting unit is located on either of the two foci of the first arc-shaped surface. The first barrier wall is disposed inside the first chamber, dividing the first chamber into multiple first sub-chambers.

[0008] The first sub-spy structure includes an upper control electrode, a light control unit, and a lower control electrode. The light control unit is disposed in the first sub-cavity. The upper control electrode is located on the side of the light control unit closer to the privacy substrate, and the lower control electrode is located on the side of the light control unit away from the privacy substrate. The upper control electrode and the lower control electrode are used to drive the light control unit to absorb or reflect light.

[0009] Optionally, the privacy panel further includes a second light-emitting unit and a second privacy structure. The second light-emitting unit is disposed on the privacy substrate, and the second privacy structure is located on the side of the second light-emitting unit away from the privacy substrate. The second privacy structure is also used to correspond to the pixel spacing area.

[0010] The second privacy structure includes a second chamber, a second barrier wall, and multiple second sub-privacy structures. The second barrier wall is disposed in the second chamber, dividing the second chamber into multiple second sub-chambers. The side of the second chamber closest to the second light-emitting unit is recessed to form a semi-elliptical second arc-shaped surface.

[0011] The first light-emitting unit is located on one of the two focal points of the first arc-shaped surface, and the second light-emitting unit is located on one of the two focal points of the second arc-shaped surface. The first light-emitting unit and the second light-emitting unit are respectively located on two focal points on the first arc-shaped surface and the second arc-shaped surface that are close to or far from each other.

[0012] The second sub-spy structure also includes an upper control electrode, a light control unit, and a lower control electrode. The light control unit is also disposed in the second sub-cavity. The upper control electrode is located on the side of the light control unit closer to the privacy substrate, and the lower control electrode is located on the side of the light control unit away from the privacy substrate. The upper control electrode and the lower control electrode are used to drive the light control unit to absorb or reflect light.

[0013] Optionally, the privacy panel further includes a second light-emitting unit disposed on the privacy substrate, wherein the first light-emitting unit is located on one of the two focal points of the first arcuate surface, and the second light-emitting unit is located on the other of the two focal points of the first arcuate surface.

[0014] Optionally, the light control unit includes light-absorbing particles and light-reflecting particles, which are disposed in the first sub-cavity. The upper control electrode and the lower control electrode are used to drive the light-absorbing particles or light-reflecting particles to move upward to absorb or reflect light.

[0015] Optionally, the first light-emitting unit and the second light-emitting unit are respectively located at two close focal points on the first arc-shaped surface and the second arc-shaped surface;

[0016] The first sub-chamber in the first chamber that is far from the second chamber is defined as the supplementary lighting chamber, and the second sub-chamber in the second chamber that is far from the first chamber is also defined as the supplementary lighting chamber. Only light-absorbing particles are provided in the supplementary lighting chamber.

[0017] Optionally, the pixel unit displaying red is defined as the first pixel unit, the pixel unit displaying green is defined as the second pixel unit, and the pixel unit displaying blue is defined as the third pixel unit;

[0018] Between the second pixel unit and the third pixel unit, the width of the fill light cavity closer to the third pixel unit is greater than the width of the fill light cavity farther away from the third pixel unit;

[0019] Between the first pixel unit and the third pixel unit, the width of the fill light cavity closer to the third pixel unit is greater than the width of the fill light cavity farther away from the third pixel unit.

[0020] Optionally, the upper control electrode of the first sub-spy structure and the upper control electrode of the second sub-spy structure are connected.

[0021] Optionally, the light-absorbing particles are quantum dot particles.

[0022] This application also discloses a display device, which includes a display panel and a privacy panel, wherein the privacy panel is disposed on one side of the display surface of the display panel;

[0023] The display panel includes multiple pixel units, with a pixel gap area formed between two adjacent pixel units, and the first privacy structure is disposed on the pixel gap area.

[0024] This application also discloses a control method for a display device, wherein the control method for the display panel is used to control the display device, and the control method for the display device includes the following steps:

[0025] When switching to sharing mode, the upper and lower control electrodes drive the light control unit to absorb light;

[0026] When switching to privacy mode, confirm the privacy angle range;

[0027] Selecting the upper and lower control electrodes corresponding to the privacy angle controls the light control unit in the corresponding first sub-cavity to reflect light.

[0028] Compared to existing anti-spy schemes that rely on large-angle light interference, this application sets a semi-elliptical first arc surface on the first chamber, sets a first light-emitting unit at one of the focal points of the first arc surface, and sets multiple first sub-anti-spy structures in the first chamber. By controlling the absorption or reflection of light by the first sub-anti-spy structures at different positions, the angle of light emitted from another focal point can be controlled, thereby achieving anti-spy effects that can switch between different viewing angles. Attached Figure Description

[0029] 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:

[0030] Figure 1 This is a schematic diagram of a display device according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of a privacy panel according to the first embodiment of this application, in which the light control unit is a microparticle;

[0032] Figure 3 This is a schematic diagram of a privacy panel according to the first embodiment of this application, in which the light control unit is a photoelectric color-changing layer;

[0033] Figure 4 This is a plan view of the first privacy screen structure according to the first embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the first privacy screen structure according to the first embodiment of this application;

[0035] Figure 6 This is an enlarged schematic diagram of the first privacy screen structure according to the first embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the second privacy screen structure according to the first embodiment of this application;

[0037] Figure 8 This is an enlarged schematic diagram of the second privacy screen structure according to the first embodiment of this application;

[0038] Figure 9 This is a schematic diagram of a supplementary lighting chamber according to the first embodiment of this application;

[0039] Figure 10 This is a schematic diagram of different supplementary lighting chamber widths according to the first embodiment of this application;

[0040] Figure 11 This is a schematic diagram of a privacy panel according to a second embodiment of this application;

[0041] Figure 12 This is a schematic diagram of a control method for a display device according to an embodiment of this application;

[0042] Figure 13 This is a schematic diagram of a light detection unit according to an embodiment of this application.

[0043] Wherein, 10, display device; 20, display panel; 110, first substrate; 120, pixel unit; 121, first pixel unit; 122, second pixel unit; 123, third pixel unit; 131, active switch; 132, pixel electrode; 133, microcup structure; 134, electrophoretic particle; 135, common electrode; 136, color resist; 140, pixel spacing area; 151, microcup barrier; 152, microcup; 200, privacy panel; 210, privacy substrate; 211, first light-emitting unit; 212, second light-emitting unit; 310, first privacy structure; 311, first chamber; 312, first arc-shaped surface; 313, first barrier; 314, first sub-privacy structure; 315, the... 320. Second privacy protection structure; 321. Second chamber; 322. Second arc-shaped surface; 323. Second barrier wall; 324. Second privacy protection structure; 325. Second chamber; 410. Upper control electrode; 420. Light control unit; 421. Light absorbing particles; 422. Light reflecting particles; 423. Photoelectric color-changing layer; 430. Lower control electrode; 440. Focal point; 450. Supplemental lighting chamber; 460. Privacy protection active switch; 511. First left chamber; 512. First neutron chamber; 513. First right chamber; 521. First lower control electrode; 522. Second lower control electrode; 523. Third lower control electrode; 610. Light detection unit; 620. Control unit. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0049] 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 display panel 20 and a privacy panel 200, wherein the privacy panel 200 is disposed on one side of the display surface of the display panel 20.

[0050] The display panel 20 includes a plurality of pixel units 120, and a pixel gap area 140 is formed between two adjacent pixel units 120. The first privacy structure 310 is disposed on the pixel gap area 140.

[0051] The display panel 20 of this application may include various display panels 20, such as TN (Twisted Nematic) display panel 20, IPS (In-Plane Switching) display panel 20, VA (Vertical Alignment) display panel 20, and MVA (Multi-Domain Vertical Alignment) display panel 20.

[0052] Of course, other types of display panels 20 can also be used, such as OLED (Organic Light-Emitting Diode) display panels 20 and electronic paper display panels 20, all of which are applicable to the above solution.

[0053] For ease of explanation, this application uses an electronic paper display panel 20 as an example of the display panel 20.

[0054] The display panel 20 includes a first substrate 110, and the pixel unit 120 is disposed on the first substrate 110. The pixel unit 120 includes an active switch 131, a pixel electrode 132, a microcup structure 133, a common electrode 135, and a color resist 136. The active switch 131 is connected to the pixel electrode 132, the microcup structure 133 is disposed on the pixel electrode 132, the common electrode 135 is disposed on the microcup structure 133, and the color resist 136 is disposed on the common electrode 135.

[0055] The microcup structure 133 includes a microcup barrier 151 and a microcup 152. The microcup barrier 151 corresponds to the pixel spacing region 140, and the microcup 152 is filled with electrophoretic particles 134 or electrophoretic ink.

[0056] For ease of explanation, this application takes the microcup 152 filled with white electrophoretic particles 134 and black electrophoretic particles 134 as an example. The pixel electrode 132 and the common electrode 135 are used to drive the white electrophoretic particles 134 and black electrophoretic particles 134 to move up and down. The color resist 136 is located on the microcup 152. The side of the microcup barrier 151 away from the first substrate 110 is flush with the side of the color resist 136 away from the first substrate 110.

[0057] This application also discloses a privacy panel 200, which can be used in the display device 10 described above. Regarding the privacy panel 200, this application provides the following design, which is specifically described through several embodiments:

[0058] Example 1:

[0059] Figure 2 This is a schematic diagram of a privacy panel according to the first embodiment of this application, in which the light control unit is a microparticle. Figure 3 This is a schematic diagram of a privacy panel according to the first embodiment of this application, in which the light control unit is a photoelectric color-changing layer. Figures 1-3 As shown, this application discloses a privacy panel 200, which is used in a display panel 20. The display panel 20 includes a plurality of pixel units 120, and a pixel gap area 140 is formed between two adjacent pixel units 120.

[0060] The privacy panel 200 includes a privacy substrate 210, a first light-emitting unit 211, and a first privacy structure 310. The first light-emitting unit 211 is disposed on the privacy substrate 210, and the first privacy structure 310 is located on the side of the first light-emitting unit 211 away from the privacy substrate 210. The first privacy structure 310 is configured to correspond to the pixel spacing area 140.

[0061] It is understandable that after the privacy panel 200 is placed on one side of the display surface of the display panel 20, the first privacy structure 310 can be completely located within the pixel spacing area 140; and without affecting the display of the pixel unit 120 of the display panel 20, it can also be partially located within the pixel spacing area 140 and partially located within the area where the pixel unit 120 is located.

[0062] The first privacy structure 310 includes a first chamber 311, a first barrier wall 313, and a plurality of first sub-privacy structures 314. The first chamber 311 is recessed on the side near the first light-emitting unit 211 to form a semi-elliptical first arc surface 312. The first light-emitting unit 211 is located on either of the two focal points 440 of the first arc surface 312. The first barrier wall 313 is disposed in the first chamber 311, dividing the first chamber 311 into a plurality of first sub-chambers 315.

[0063] The first sub-spy structure 314 includes an upper control electrode 410, a light control unit 420, and a lower control electrode 430. The light control unit 420 is disposed in the first sub-chamber 315. The upper control electrode 410 is located on the side of the light control unit 420 close to the privacy substrate 210, and the lower control electrode 430 is located on the side of the light control unit 420 away from the privacy substrate 210. The upper control electrode 410 and the lower control electrode 430 are used to drive the light control unit 420 to absorb or reflect light.

[0064] For example, the material of the first privacy structure 310 may include polymethyl methacrylate material, and after the first arc-shaped surface 312 is formed, a silicone oil material is used to fill it after the upper control electrode 410 can be directly formed on the first arc-shaped surface 312. The refractive index of polymethyl methacrylate and the refractive index of silicone oil are both 1.4.

[0065] It is understandable that, since the first arc surface 312 is semi-elliptical, there are two focal points 440 above the first arc surface 312. The first light-emitting unit 211 is located on either of the two focal points 440 of the first arc surface 312, that is, the light-emitting surface of the first light-emitting unit 211 faces either of the two focal points 440 of the first arc surface 312.

[0066] For example, when the light control unit 420 is in the state of reflecting light, that is, the first arc-shaped surface 312 is in the state of reflecting light, the light emitted by the first light-emitting unit 211 shines on the first arc-shaped surface 312 from one of the focal points 440. The reflected light from the first arc-shaped surface 312 will be emitted at the other focal point 440. Furthermore, the light emitted by the first light-emitting unit 211 shines on different positions of the first arc-shaped surface 312 from one of the focal points 440, so the light emitted at the other focal point 440 will form different angles.

[0067] Moreover, as the light emitted by the first light-emitting unit 211 gradually travels further from one of the focal points 440 to the position of the first arc-shaped surface 312, the angle between the light emitted from the other focal point 440 and the horizontal plane gradually increases.

[0068] The number of the first sub-chambers 315 can include three, four, five, six or even more. The more first sub-chambers 315 there are, the more partitions that can be switched between different viewing angles.

[0069] For ease of explanation, this application takes the example of having three first sub-cavities 315, which are sequentially defined as the first left sub-cavity 511, the first neutron chamber 512, and the first right sub-cavity 513 from the direction closest to the first light-emitting unit 211 to the direction furthest from the first light-emitting unit 211. Each of the first left sub-cavity 511, the first neutron chamber 512, and the first right sub-cavity 513 is provided with a light control unit 420.

[0070] Correspondingly, three independent lower control electrodes 430 are also provided, which are defined as the first lower control electrode 521, the second lower control electrode 522 and the third lower control electrode 523 respectively.

[0071] The first lower control electrode 521 and the upper control electrode 410 control the light control unit 420 in the first left sub-chamber 511 to absorb or reflect light. The second lower control electrode 522 and the upper control electrode 410 control the light control unit 420 in the first neutron chamber 512 to absorb or reflect light. The third lower control electrode 523 and the upper control electrode 410 control the light control unit 420 in the first right sub-chamber 513 to absorb or reflect light.

[0072] By controlling whether the first arc-shaped surface 312 corresponding to the first left sub-chamber 511, the first arc-shaped surface 312 corresponding to the first neutron chamber 512, and the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 are reflecting or absorbing light, it is possible to control privacy from different angles.

[0073] For example, when the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first neutron chamber 512 and the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 can be emitted from another focal point 440, thus achieving a privacy protection state within the first viewing angle range.

[0074] For example, when the first arc-shaped surface 312 corresponding to the first neutron chamber 512 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 and the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first neutron chamber 512 can be emitted from another focal point 440, thus achieving a privacy protection state in the second viewing angle range.

[0075] For example, when the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 and the first arc-shaped surface 312 corresponding to the first neutron chamber 512 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 can be emitted from another focal point 440, thus achieving a privacy protection state in the third-view perspective.

[0076] Compared to existing anti-spy schemes that rely on large-angle light interference, this application provides a semi-elliptical first arc surface 312 on the first chamber 311, a first light-emitting unit 211 on one of the focal points 440 of the first arc surface 312, and multiple first sub-anti-spy structures 314 within the first chamber 311. By controlling the absorption or reflection of light by the first sub-anti-spy structures 314 at different positions, the angle of light emitted from another focal point 440 can be controlled, thereby achieving anti-spy effects that can switch between different viewing angles.

[0077] See Figure 3 As shown, the light control unit 420 can be a photoelectric color-changing layer 423. The upper control electrode 410 and the lower control electrode 430 apply different voltages to the photoelectric color-changing layer 423, which can make the photoelectric color-changing layer 423 reflect light and absorb light, so that the first arc-shaped surface 312 corresponding to different first sub-cavities 315 reflect light and absorb light.

[0078] The light control unit 420 can also be a white electrophoresis unit and a black electrophoresis unit. The white electrophoresis unit is driven to rise by the upper control electrode 410 and the lower control electrode 430, so that the first arc-shaped surface 312 corresponding to the first sub-chamber 315 is in a state of reflecting light. The black electrophoresis unit is driven to rise by the upper control electrode 410 and the lower control electrode 430, so that the first arc-shaped surface 312 corresponding to the first sub-chamber 315 is in a state of absorbing light.

[0079] See Figure 2 As shown, this application uses the light control unit 420, which includes light-absorbing particles 421 and light-reflecting particles 422, as an example for illustration. The light-absorbing particles 421 and the light-reflecting particles 422 are disposed in the first sub-chamber 315. The upper control electrode 410 and the lower control electrode 430 are used to drive the light-absorbing particles 421 or the light-reflecting particles 422 to move upward in order to absorb or reflect light.

[0080] For example, the light-absorbing particle 421 can be a black electrophoretic particle, and the light-reflecting particle 422 can be a white electrophoretic particle.

[0081] The light-absorbing particles 421 are driven to rise by the upper control electrode 410 and the lower control electrode 430, so that the first arc-shaped surface 312 corresponding to the first sub-chamber 315 is in a state of absorbing light. The light-reflecting particles 422 are driven to rise by the upper control electrode 410 and the lower control electrode 430, so that the first arc-shaped surface 312 corresponding to the first sub-chamber 315 is in a state of reflecting light.

[0082] For example, the light-absorbing particles 421 are quantum dot particles. These quantum dot particles are prepared by ball milling barium titanate nanoparticles with a silane coupling agent in ethanol, thereby modifying their surface. The amino groups (-NH2) are exposed on the outer surface, providing active sites for subsequent quantum dot coupling. These particles are then mixed with quantum dots (QDs), where the quantum dots (such as CdSe / ZnS) and the positively charged amino groups are bonded through Coulomb forces, ultimately assembling into positively charged quantum dot particles with a BaTiO3 core and a surface coating of quantum dots.

[0083] For example, 10-nanometer quantum dot particles can excite 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 action, 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.

[0084] Figure 4This is a plan view of the first privacy screen structure according to the first embodiment of this application, combined with Figure 4 As shown, the privacy panel 200 can be disposed separately on a substrate and then assembled; or it can be directly fabricated on the display panel 20.

[0085] For ease of explanation, this application takes the privacy panel 200 disposed on the display panel 20 as an example. Simply put, the display panel 20 serves as the substrate of the privacy display panel 20 of this application. The first privacy structure 310 is disposed in a strip shape in the pixel spacing area 140 between the two columns of pixel units 120, and the lower control electrode 430 is also disposed in a strip shape in the pixel spacing area 140 on the display panel 20.

[0086] The first privacy protection structure 314 also includes a privacy protection active switch 460. A lower control electrode 430 is connected to a privacy protection active switch 460. By opening and closing the privacy protection active switch 460, a voltage is applied to the lower control electrode 430 to control the state of the light control unit 420.

[0087] Moreover, a first privacy structure 310 may be provided with only one first light-emitting unit 211, which is located in the middle of the first privacy structure 310. Of course, multiple first light-emitting units 211 may also be provided at equal intervals.

[0088] Since the first privacy screen structure 310 can only achieve privacy protection on one side when working, a second light-emitting unit 212 and a second privacy screen structure 320 are also provided in this embodiment. Specifically:

[0089] Figure 5 This is a schematic diagram of the first privacy screen structure according to the first embodiment of this application. Figure 6 This is an enlarged schematic diagram of the first privacy screen structure according to the first embodiment of this application. Figure 7 This is a schematic diagram of the second privacy screen structure according to the first embodiment of this application. Figure 8 This is an enlarged schematic diagram of the second privacy screen structure according to the first embodiment of this application, combined with... Figures 5-8 As shown.

[0090] The privacy panel 200 further includes a second light-emitting unit 212 and a second privacy structure 320. The second light-emitting unit 212 is disposed on the privacy substrate 210, and the second privacy structure 320 is located on the side of the second light-emitting unit 212 away from the privacy substrate 210. The second privacy structure 320 is also used to correspond to the pixel spacing area 140.

[0091] It should be understood that the first privacy structure 310 and the second privacy structure 320 can be provided in all pixel interval areas 140.

[0092] Alternatively, a first privacy screen structure 310 can be set in a portion of the pixel spacing area 140, and a second privacy screen structure 320 can be set in a portion of the pixel spacing area 140.

[0093] Alternatively, a first privacy screen 310 and a second privacy screen 320 may be provided in a portion of the pixel interval area 140, or only the first privacy screen 310 or the second privacy screen 320 may be provided in a portion of the pixel interval area 140.

[0094] When the privacy panel 200 is disposed on the display panel 20, the first privacy structure 310 and the second privacy structure 320 are located within the pixel interval area 140 formed between the two columns of pixel units 120. Of course, without affecting the display of the pixel units 120 of the display panel 20, the second privacy structure 320 may also be partially located within the pixel interval area 140 and partially located within the area where the pixel units 120 are located.

[0095] The second privacy structure 320 includes a second chamber 321, a second barrier 323 and a plurality of second sub-privacy structures 324. The second barrier 323 is disposed in the second chamber 321, dividing the second chamber 321 into a plurality of second sub-chambers 325. The side of the second chamber 321 near the second light-emitting unit 212 is recessed to form a semi-elliptical second arc-shaped surface 322.

[0096] The first light-emitting unit 211 is located on one of the two focal points 440 of the first arc surface 312, and the second light-emitting unit 212 is located on one of the two focal points 440 of the second arc surface 322. The first light-emitting unit 211 and the second light-emitting unit 212 are respectively located on two focal points 440 of the first arc surface 312 and the second arc surface 322 that are close to or far from each other.

[0097] The second sub-spy structure 324 also includes an upper control electrode 410, a light control unit 420, and a lower control electrode 430. The light control unit 420 is also disposed in the second sub-chamber 325. The upper control electrode 410 is located on the side of the light control unit 420 close to the privacy substrate 210, and the lower control electrode 430 is located on the side of the light control unit 420 away from the privacy substrate 210. The upper control electrode 410 and the lower control electrode 430 are used to drive the light control unit 420 of the second sub-spy structure 324 to absorb or reflect light.

[0098] The second privacy structure 320 and the first privacy structure 310 have the same structure and the same privacy control principle, so they will not be described in detail here.

[0099] By setting the second privacy structure 320, the privacy angle of both sides of the display panel 20 can be controlled independently. For example, the left side of the display panel 20 can be in a privacy state in the first viewing angle range, and the right side of the display panel 20 can be in a privacy state in the second viewing angle range. Of course, it is also possible to have the left and right sides of the display panel 20 in a privacy state with the same viewing angle range.

[0100] Furthermore, the upper control electrode 410 of the first sub-spy screen structure 314 and the upper control electrode 410 of the second sub-spy screen structure 324 are connected. This is equivalent to connecting all the upper control electrodes 410 of the first sub-spy screen structure 314 and all the upper control electrodes 410 of the second sub-spy screen structure 324 together, thereby simplifying the control process and reducing the manufacturing difficulty.

[0101] Figure 9 This is a schematic diagram of a supplementary lighting chamber according to the first embodiment of this application. Figure 10 This is a schematic diagram of different supplementary lighting chamber widths according to the first embodiment of this application, combined with... Figures 9-10 As shown, the first light-emitting unit 211 and the second light-emitting unit 212 are located on two focal points 440 that are close to each other on the first arc-shaped surface 312 and the second arc-shaped surface 322, respectively.

[0102] The first sub-chamber 315, located away from the second chamber 321 within the first chamber 311, is defined as the supplementary lighting chamber 450. The second sub-chamber 325, located away from the first chamber 311 within the second chamber 321, is also defined as the supplementary lighting chamber 450. The supplementary lighting chamber 450 contains only light-absorbing particles 421.

[0103] The supplementary lighting chamber 450 contains only light-absorbing particles 421. By controlling the lower control electrode 430 under the supplementary lighting chamber 450, the light-absorbing particles 421 are controlled to move downward. Part of the light emitted by the first light-emitting unit 211 and the second light-emitting unit 212 can enter the adjacent pixel unit 120 through the supplementary lighting chamber 450, thereby improving the brightness of the pixel unit 120.

[0104] Alternatively, by controlling the lower control electrode 430 under the supplementary light chamber 450 to control the light-absorbing particles 421 to move upward, the light emitted by the first light-emitting unit 211 and the second light-emitting unit 212 cannot enter the adjacent pixel unit 120 through the supplementary light chamber 450, thereby allowing for fine adjustment of the brightness within the pixel unit 120.

[0105] Furthermore, the pixel unit 120 displaying red is defined as the first pixel unit 121, the pixel unit 120 displaying green is defined as the second pixel unit 122, and the pixel unit 120 displaying blue is defined as the third pixel unit 123.

[0106] The color resist 136 in the first pixel unit 121 is red, the color resist 136 in the second pixel unit 122 is green, and the color resist 136 in the third pixel unit 123 is blue.

[0107] Between the second pixel unit 122 and the third pixel unit 123, the width of the fill light cavity 450 closer to the third pixel unit 123 is greater than the width of the fill light cavity 450 farther away from the third pixel unit 123.

[0108] Between the first pixel unit 121 and the third pixel unit 123, the width of the supplementary light chamber 450 closer to the third pixel unit 123 is greater than the width of the supplementary light chamber 450 farther away from the third pixel unit 123.

[0109] In simple terms, after the privacy panel 200 is installed on the display panel 20, the light coming out of the fill light chamber 450 near the blue pixel unit 120 will enter the blue pixel unit 120, the light coming out of the fill light chamber 450 near the red pixel unit 120 will enter the red pixel unit 120, and the light coming out of the fill light chamber 450 near the green pixel unit 120 will enter the green pixel unit 120.

[0110] By controlling the width of the supplementary light chamber 450 near the blue pixel unit 120 to be greater than the width of the supplementary light chamber 450 near the red pixel unit 120 and the width of the supplementary light chamber 450 near the green pixel unit 120, the blue pixel unit 120 receives more additional light, thereby balancing the issue that the light transmittance of the blue color resist 136 is lower than that of the red color resist 136 and the green color resist 136.

[0111] The first light-emitting unit 211 and the second light-emitting unit 212 on both sides of the third pixel unit 123 are used to emit blue light, the first light-emitting unit 211 and the second light-emitting unit 212 on both sides of the second pixel unit 122 are used to emit green light, and the first light-emitting unit 211 and the second light-emitting unit 212 on both sides of the first pixel unit 121 are used to emit red light.

[0112] Example 2:

[0113] Figure 11 This is a schematic diagram of a privacy panel according to a second embodiment of this application, as shown below. Figure 11As shown, compared to the solution in the first embodiment, the second embodiment differs in that only a first privacy screen structure 310 is provided, and a first light-emitting unit 211 and a second light-emitting unit 212 are respectively provided on the two focal points 440 of the first arc-shaped surface 312. Specifically:

[0114] The privacy panel 200 further includes a second light-emitting unit 212, which is disposed on the privacy substrate 210. The first light-emitting unit 211 is located on one of the two focal points 440 of the first arc-shaped surface 312, and the second light-emitting unit 212 is located on the other of the two focal points 440 of the first arc-shaped surface 312.

[0115] Compared to the solution in the first embodiment, this solution involves only setting a first privacy screen structure 310, and setting a first light-emitting unit 211 and a second light-emitting unit 212 on the two focal points 440 of the first arc-shaped surface 312, respectively.

[0116] For example, the first light-emitting unit 211 is on the left and the second light-emitting unit 212 is on the right. When privacy protection is needed for a large viewing angle on the right, privacy protection for a large viewing angle on the right can be achieved by turning on the first light-emitting unit 211; when privacy protection is needed for a large viewing angle on the left, privacy protection for a large viewing angle on the left can be achieved by turning on the second light-emitting unit 212. This eliminates the need for a second privacy protection structure 320, increases the privacy protection effect, does not cause the width of the pixel spacing area 140 to increase, and does not reduce the resolution of the display panel 20.

[0117] Figure 12 This is a schematic diagram of a control method for a display device according to an embodiment of this application, as shown below. Figure 12 As shown, this application also discloses a control method for a display device 10, wherein the control method for the display panel 20 of the display device 10 includes the following steps:

[0118] S1: When switching to sharing mode, the upper control electrode and the lower control electrode drive the light control unit to absorb light;

[0119] S2: When switching to privacy mode, confirm the privacy angle range;

[0120] For example, confirming the privacy angle range includes requiring privacy in a first viewpoint, a second viewpoint, or a third viewpoint.

[0121] S3: Select the upper and lower control electrodes corresponding to the privacy angle to control the light control unit in the corresponding first sub-cavity to reflect light.

[0122] For example, when the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first neutron chamber 512 and the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 can be emitted from another focal point 440, thus achieving a privacy protection state within the first viewing angle range.

[0123] For example, when the first arc-shaped surface 312 corresponding to the first neutron chamber 512 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 and the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first neutron chamber 512 can be emitted from another focal point 440, thus achieving a privacy protection state in the second viewing angle range.

[0124] For example, when the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 is controlled to reflect light, and the first arc-shaped surface 312 corresponding to the first left sub-chamber 511 and the first arc-shaped surface 312 corresponding to the first neutron chamber 512 are controlled to absorb light, the light that illuminates the first arc-shaped surface 312 corresponding to the first right sub-chamber 513 can be emitted from another focal point 440, thus achieving a privacy protection state in the third-view perspective.

[0125] This application sets a semi-elliptical first arc surface 312 on the first chamber 311, sets a first light-emitting unit 211 on one of the focal points 440 of the first arc surface 312, and sets a plurality of first sub-peeping structures 314 in the first chamber 311. Then, the through hole controls the absorption or reflection of light by the first sub-peeping structures 314 at different positions, thereby controlling the angle of the light emitted from another focal point 440, so as to achieve a peeping effect that can switch different viewing angle ranges.

[0126] S3: Selecting the upper and lower control electrodes corresponding to the privacy angle to control the light control unit in the corresponding first sub-cavity to reflect light also includes:

[0127] S31: Select the upper and lower control electrodes corresponding to the privacy angle to control the light control unit in the corresponding first sub-cavity to reflect light, and control the other upper and lower control electrodes to control the light control unit in the corresponding first sub-cavity to absorb light.

[0128] This allows for privacy protection only within the required viewing angle range, without affecting the viewing experience from other viewing angle ranges.

[0129] Figure 13This is a schematic diagram of a light detection unit according to an embodiment of this application, as shown below. Figure 13 As shown, the display device 10 also includes a light detection unit 610 and a control unit 620. The light detection unit 610 is used to detect the light intensity illuminating different areas on the display panel 20. The light detection unit 610, the control unit 620, the first privacy structure 310, and the second sub-privacy structure 324 are connected.

[0130] For example, the display panel 20 includes a first region, a second region, a third region, and a fourth region. When the light detection unit 610 detects that the light intensity in a certain region is low, the control unit 620 controls the lower control electrode 430 under the supplementary light chamber 450 to control the light-absorbing particles 421 to move downward, and controls the light emitted by the first light-emitting unit 211 and the second light-emitting unit 212 to enter the adjacent pixel unit 120, thereby increasing the brightness of the pixel unit 120; making the display screen of the display device 10 more balanced.

[0131] 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.

[0132] 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.

[0133] 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 privacy panel, characterized by, The privacy panel is used in a display panel, the display panel comprises a plurality of pixel units, and a pixel interval region is formed between two adjacent pixel units; The privacy panel comprises a privacy substrate, a first light emitting unit and a first privacy structure, the first light emitting unit is arranged on the privacy substrate, the first privacy structure is located on a side of the first light emitting unit away from the privacy substrate, and the first privacy structure is arranged corresponding to the pixel interval region; The first privacy structure comprises a first cavity, a first barrier wall and a plurality of first sub-privacy structures, the first cavity is recessed to form a first arc-shaped surface in a semi-elliptical shape on a side close to the first light emitting unit, and the first light emitting unit is located on any one of two focal points of the first arc-shaped surface; the first barrier wall is arranged in the first cavity, and the first cavity is divided into a plurality of first sub-cavities by the first barrier wall; The first sub-privacy structure comprises an upper control electrode, a light control unit and a lower control electrode, the light control unit is arranged in the first sub-cavity, the upper control electrode is located on a side of the light control unit close to the privacy substrate, and the lower control electrode is located on a side of the light control unit away from the privacy substrate; the upper control electrode and the lower control electrode are used to drive the light control unit to absorb or reflect light.

2. The privacy panel of claim 1, wherein, The privacy panel further comprises a second light emitting unit and a second privacy structure, the second light emitting unit is arranged on the privacy substrate, and the second privacy structure is located on a side of the second light emitting unit away from the privacy substrate; the second privacy structure is also arranged corresponding to the pixel interval region; The second privacy structure comprises a second cavity, a second barrier wall and a plurality of second sub-privacy structures, the second barrier wall is arranged in the second cavity, and the second cavity is divided into a plurality of second sub-cavities by the second barrier wall; the second cavity is recessed to form a second arc-shaped surface in a semi-elliptical shape on a side close to the second light emitting unit; The first light emitting unit is located on one of two focal points of the first arc-shaped surface, the second light emitting unit is located on the other of the two focal points of the first arc-shaped surface, and the first light emitting unit and the second light emitting unit are located on the two focal points of the first arc-shaped surface and the second arc-shaped surface respectively, and the two focal points are close to or away from each other; The second sub-privacy structure also comprises an upper control electrode, a light control unit and a lower control electrode, the light control unit is also arranged in the second sub-cavity, the upper control electrode is located on a side of the light control unit close to the privacy substrate, and the lower control electrode is located on a side of the light control unit away from the privacy substrate; the upper control electrode and the lower control electrode are used to drive the light control unit to absorb or reflect light.

3. The privacy panel of claim 1, wherein, The privacy panel further comprises a second light emitting unit, the second light emitting unit is arranged on the privacy substrate, the first light emitting unit is located on one of two focal points of the first arc-shaped surface, and the second light emitting unit is located on the other of the two focal points of the first arc-shaped surface.

4. The privacy panel of claim 1, wherein, The light control unit comprises light-absorbing microparticles and light-reflecting microparticles, which are arranged in the first sub-chamber, and the upper control electrode and the lower control electrode are used to drive the light-absorbing microparticles or the light-reflecting microparticles to move upward to absorb or reflect light.

5. The privacy panel of claim 2, wherein, The first light-emitting unit and the second light-emitting unit are respectively located on two focal points close to each other on the first arc surface and the second arc surface. The first sub-chamber in the first chamber away from the second chamber is defined as a light supplement chamber, and the second sub-chamber in the second chamber away from the first chamber is also defined as a light supplement chamber, and only light-absorbing microparticles are arranged in the light supplement chamber.

6. The privacy panel of claim 5, wherein, The pixel unit displaying red is defined as a first pixel unit, the pixel unit displaying green is defined as a second pixel unit, and the pixel unit displaying blue is defined as a third pixel unit. Between the second pixel unit and the third pixel unit, the width of the light supplement chamber close to the third pixel unit is greater than the width of the light supplement chamber away from the third pixel unit. Between the first pixel unit and the third pixel unit, the width of the light supplement chamber close to the third pixel unit is greater than the width of the light supplement chamber away from the third pixel unit.

7. The privacy panel of claim 2, wherein, The upper control electrode of the first sub-anti-peep structure and the upper control electrode of the second sub-anti-peep structure are connected.

8. The privacy panel of claim 4, wherein, The light-absorbing microparticles are quantum dot microparticles.

9. A display device comprising: The display device comprises a display panel and an anti-peep panel as claimed in any one of claims 1-8, and the anti-peep panel is arranged on one side of the display surface of the display panel. The display panel comprises a plurality of pixel units, and a pixel interval region is formed between two adjacent pixel units, and the first anti-peep structure is arranged on the pixel interval region.

10. A control method of a display device, characterized by, The control method of the display panel is used to control the display device as claimed in claim 9, and the control method of the display device comprises the steps of: When switching to the sharing mode, the upper control electrode and the lower control electrode drive the light control unit to absorb light; When switching to the anti-peep mode, the anti-peep angle range is confirmed; The upper control electrode and the lower control electrode corresponding to the anti-peep angle control the light control unit in the corresponding first sub-chamber to reflect light.

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