Electrophoresis device, display panel and display device

Abstract

The invention discloses an electrophoresis device, a display panel and a display device, and the electrophoresis device is used for the display panel and comprises an electrophoresis box, a first reflection structure and a second reflection structure. The electrophoresis box comprises a box body and an electrophoresis particle layer, the electrophoresis particle layer is arranged in the box body, the box body comprises a first surface and a second surface which are opposite to each other, and the box body is of a transparent structure; the first reflection structure is arranged on the first surface, the first reflection structure comprises a first reflection surface, and the first reflection surface faces the electrophoresis box; the second reflection structure is arranged on the second surface and comprises a second reflection surface, and the second reflection surface faces the electrophoresis box; the electrophoretic particle layer is used for moving between the first surface and the second surface under the action of an electric field; when the electrophoresis device is in a power-on state, the electrophoresis particles are used for reflecting light. After the electrophoresis device is used for the display panel, peep prevention can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to an electrophoretic device, a display panel and a display apparatus. Background Art

[0002] Organic light-emitting diode (OLED) is an emerging display technology in display panels. It has the advantages of self-luminescence, high contrast, and fast response, and is widely used in various display devices. However, OLED also has some problems, such as high ambient light reflection and easy peeping. Summary of the invention

[0003] The purpose of the present application is to provide an electrophoretic device, a display panel and a display apparatus to solve the problem that the display panel is easy to peek into.

[0004] To achieve the purpose of this application, this application provides the following technical solutions:

[0005] In a first aspect, the present invention provides an electrophoretic device for a display panel, comprising:

[0006] An electrophoresis box, comprising a box body and an electrophoresis particle layer, wherein the electrophoresis particle layer is arranged in the box body, the box body comprises a first surface and a second surface opposite to each other, and the box body is a transparent structure;

[0007] A first reflective structure, disposed on the first surface, the first reflective structure comprising a first reflective surface, the first reflective surface facing the electrophoresis box;

[0008] A second reflective structure, disposed on the second surface, the second reflective structure comprising a second reflective surface, and the second reflective surface faces the electrophoresis box;

[0009] The electrophoretic particle layer is used to move between the first surface and the second surface under the action of an electric field; when the electrophoretic device is powered on, the electrophoretic particle layer is used to reflect light.

[0010] In one embodiment, the first reflecting surface is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface; the second reflecting surface is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface.

[0011] In one embodiment, the first reflective structure includes a first packaging layer and a first reflective layer, the first reflective layer has the first reflective surface, the first reflective layer is accommodated in the first packaging layer, and the first packaging layer is a transparent structure.

[0012] In one embodiment, the cross-sectional shape of the electrophoresis box is an isosceles trapezoid, the first surface is the lower base of the isosceles trapezoid, and the second surface is the upper base of the isosceles trapezoid.

[0013] In one embodiment, the electrophoresis device further includes a first light shielding layer, and the first light shielding layer is disposed on a side of the second reflective structure facing away from the electrophoresis box.

[0014] In one embodiment, the first light-shielding layer is an electrochromic layer.

[0015] In one embodiment, the electrophoresis device further includes a second light-shielding layer, and the second light-shielding layer is disposed on a side of the first reflective structure facing away from the electrophoresis box.

[0016] In one embodiment, the electrophoresis device further includes a mounting seat, and the mounting seat is disposed on a side of the second light-shielding layer facing away from the first reflective structure, and the mounting seat is a light-shielding structure.

[0017] In a second aspect, the present invention provides a display panel comprising a plurality of pixels, a driving circuit layer and an electrophoretic device as described in any one of the various embodiments of the first aspect, wherein the plurality of pixels are arranged at intervals on the driving circuit layer, the electrophoretic device is arranged between two adjacent pixels, and the pixels and the electrophoretic device are electrically connected to the driving circuit layer.

[0018] In a third aspect, the present invention provides a display device, comprising a housing and a display panel as described in any one of the various embodiments of the second aspect, wherein the display panel is accommodated in the housing.

[0019] The electrophoretic device of the present invention is provided with a first reflective structure, an electrophoretic box and a second reflective structure which are stacked in sequence. When the electrophoretic device is not powered on, the electrophoretic particle layer in the electrophoretic box appears black and is located at the bottom of the electrophoretic box. At this time, the electrophoretic particle layer is a light-shielding material, and the electrophoretic box plays a light-shielding role to prevent color mixing. When the electrophoretic device is powered on, that is, the electrophoretic device is in an anti-peeping mode, the electrophoretic particle layer in the electrophoretic box cooperates with the first reflective surface and the second reflective surface to reflect light, so that color mixing occurs in part of the viewing angle, so that color mixing occurs in the peeping viewing angle, that is, the picture in the anti-peeping viewing angle is not the original picture, so that the electrophoretic device has an anti-peeping effect. According to the size of the electric field, the electrophoretic particle layer is located at different positions in the electrophoretic box, thereby realizing that the anti-peeping viewing angle of the anti-peeping device is adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a side view of an electrophoretic device of an embodiment in one state;

[0022] Figure 2 is a side view of an electrophoresis device in another embodiment in another state;

[0023] Figure 3 is a cross-sectional view of a display panel of an embodiment;

[0024] Figure 4 is a cross-sectional view of a display panel according to another embodiment;

[0025] Figure 5 is a schematic diagram of a display device according to an embodiment.

[0026] Description of reference numerals:

[0027] 100-display panel, 10-electrophoretic device, 11-electrophoretic box, 111-box body, 112-electrophoretic particle layer, 113-electrophoretic particles, 114-first surface, 115-second surface, 12-first reflection structure, 121-first packaging layer, 122-first reflection layer, 123-first reflection surface, 13-second reflection structure, 131-second packaging layer, 132-second reflection layer, 133-second reflection surface, 14-first shading layer, 15-second shading layer, 16-mounting seat, 20-pixel, 30-driving circuit layer, 40-anode layer, 50-cathode layer, 61-first inorganic packaging layer, 62-organic packaging layer, 63-second inorganic packaging layer, 70-backing substrate, 80-light-emitting layer, 200-housing. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0031] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] In order to solve the problems of high ambient light reflection and easy peeping in the display panel, in the existing technology, a layer of polarizer or black matrix (BM) is usually added to the OLED display to solve the problems of ambient light reflection and peeping. The polarizer can reduce the reflection of ambient light and improve the display effect, but it will reduce the brightness of the screen. The black matrix can prevent color mixing and improve the display quality, but it will increase the thickness and weight of the display, and these methods also have certain limitations in anti-peeping viewing angle adjustment.

[0033] Figure 1 The electrophoretic device 10 is in a normal mode, i.e., a non-powered mode. Figure 2 The electrophoretic device 10 is in a powered-on state.

[0034] For reference Figure 1 and Figure 2 The present invention provides an electrophoretic device 10, which is used for a display panel 100 and includes an electrophoretic box 11, a first reflective structure 12 and a second reflective structure 13; the electrophoretic box 11 includes a box body 111 and an electrophoretic particle layer 112, the electrophoretic particle layer 112 is arranged in the box body 111, the box body 111 includes a first surface 114 and a second surface 115 opposite to each other, and the box body 111 is a transparent structure; the first reflective structure 12 is arranged on the first surface 114, the first reflective structure 12 includes a first reflective surface 123, and the first reflective surface 123 faces the electrophoretic box 11; the second reflective structure 13 is arranged on the second surface 115, the second reflective structure 13 includes a second reflective surface 133, and the second reflective surface 133 faces the electrophoretic box 11; the electrophoretic particle layer 112 is used to move between the first surface 114 and the second surface 115 under the action of an electric field; when the electrophoretic device 10 is powered on, the electrophoretic particle layer 112 is used to reflect light.

[0035] The box body 111 is made of a transparent conductive material, which may be indium tin oxide (ITO), a conductive polymer (such as PEDOT), a metal film, etc. The metal film may be a silver film, a copper film, an aluminum film, etc., without limitation.

[0036] The electrophoretic particle layer 112 is composed of a plurality of electrophoretic particles 113. The electrophoretic particles 113 are charged particles or microparticles that can move under the action of an electric field during the electrophoresis process. The electrophoretic particles 113 can be divided into organic nanoparticles and inorganic nanoparticles according to their chemical composition; can be divided into light absorbing particles, light scattering particles, fluorescent particles, electrochromic particles, photochromic particles and photonic crystals according to their optical properties; and can be divided into single-phase particles and composite particles (such as coated modified particles, grafted modified particles, doped particles, adsorbed modified particles, etc.) according to their structure.

[0037] Optionally, the first surface 114 and the second surface 115 are planes. When the first surface 114 and / or the second surface 115 are curved surfaces, an additional packaging structure needs to be provided to make the end surface of the electrophoresis box 11 in the stacking direction flat, so as to facilitate the assembly of the electrophoresis device 10.

[0038] Optionally, the box body 111 is filled with a supporting medium to facilitate the movement of the electrophoretic particles 113. Depending on the supporting medium, the electrophoresis box 11 can be divided into filter paper electrophoresis, cellulose acetate membrane electrophoresis, thin layer electrophoresis, gel electrophoresis, etc. In addition, depending on the device form of the supporting medium, the electrophoresis box 11 can be divided into horizontal plate electrophoresis, vertical plate electrophoresis, vertical disk electrophoresis, capillary electrophoresis, bridge electrophoresis, and continuous flow electrophoresis.

[0039] The electrophoretic device 10 of the present invention is provided with a first reflective structure 12, an electrophoretic box 11 and a second reflective structure 13 which are stacked in sequence. When the electrophoretic device 10 is not powered on, the electrophoretic particle layer 112 in the electrophoretic box 11 appears black and is located at the bottom of the electrophoretic box 11. At this time, the electrophoretic particle layer 112 is a light-shielding material, and the electrophoretic box 11 plays a light-shielding role to prevent color mixing. When the electrophoretic device 10 is powered on, that is, the electrophoretic device 10 is in an anti-peeping mode, the electrophoretic particle layer 112 in the electrophoretic box 11 cooperates with the first reflective surface 123 and the second reflective surface 133 to reflect light, so that color mixing occurs in part of the viewing angle, so that color mixing occurs in the peeping viewing angle, that is, the picture in the anti-peeping viewing angle is not the original picture, so that the electrophoretic device 10 has an anti-peeping effect. According to the size of the electric field, the electrophoretic particle layer 112 is located at different positions in the electrophoretic box 11, so as to realize that the anti-peeping viewing angle of the anti-peeping device is adjustable.

[0040] In addition, since there is no need to set a light shielding layer near the light-emitting side of the display panel 100 to prevent color mixing, the viewing angle of the display panel 100 is improved. The electrophoretic particles 113 of the electrophoretic box 11 have a bistable characteristic. When reaching the required anti-peeping position, the power-on characteristic can still be maintained after a certain period of power failure, which can reduce the anti-peeping power consumption to a certain extent. Since natural light and pixel 20 light are used at the same time, the light efficiency utilization rate is improved, and the pixel opening, that is, the portion of the pixel 20 that can transmit light, is increased. The proportion of the entire pixel 20.

[0041] In one embodiment, the first reflecting surface 123 is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface; the second reflecting surface 133 is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface.

[0042] Optionally, the first reflecting surface 123 and / or the second reflecting surface 133 are composed of planes and planes to form a sawtooth reflecting surface, and the sawtooth shape can be formed by a plurality of triangles and / or rectangles. The arc surface can be either a superior arc or an inferior arc, without limitation.

[0043] Optionally, the first reflective surface 123 mainly cooperates with the electrophoretic particle layer 112 to reflect ambient light, and the second reflective surface 133 mainly cooperates with the electrophoretic particle layer 112 to reflect pixel light.

[0044] Defining the shapes of the first reflection surface 123 and the second reflection surface 133 helps to enhance the reflection effect between the first reflection surface 123 and the second reflection surface 133 and the electrophoretic particle layer 112 , thereby improving the utilization of ambient light and pixel light.

[0045] For reference Figure 1 and Figure 2 In one embodiment, the first reflective structure 12 includes a first packaging layer 121 and a first reflective layer 122. The first reflective layer 122 has a first reflective surface 123. The first reflective layer 122 is accommodated in the first packaging layer 121. The first packaging layer 121 is a transparent structure.

[0046] The material of the first encapsulation layer 121 can be UV curing glue, epoxy thermosetting glue, polyimide (PI), polyester (PET), etc., without limitation.

[0047] Similarly, the second reflective structure 13 includes a second packaging layer 131 and a second reflective layer 132 . The second reflective layer 132 has a second reflective surface 133 . The second reflective layer 132 is accommodated in the second packaging layer 131 . The second packaging layer 131 is a transparent structure.

[0048] Optionally, the first reflective layer 122 and the second reflective layer 132 may be made of materials that can efficiently reflect light. These materials may include metal films, high reflectivity polymers, and multilayer film structures. The metal film may be an aluminum film, and the multilayer film structure may be a structure that utilizes the difference in refractive index of different materials and forms a Bragg reflector (DBR) through multilayer stacking to achieve efficient reflection of light of a specific wavelength.

[0049] The first packaging layer 121 can enhance the connection strength between the first reflective structure 12 and the electrophoretic box 11 , thereby preventing the connection between the first packaging structure and the electrophoretic box 11 from being unstable due to the irregular structure of the first reflective surface 123 .

[0050] In one embodiment, the cross-sectional shape of the electrophoresis box 11 is an isosceles trapezoid, the first surface 114 is the lower base of the isosceles trapezoid, and the second surface 115 is the upper base of the isosceles trapezoid.

[0051] Optionally, the smaller the base angle of the isosceles trapezoid is, the greater the size difference between the first reflecting surface 123 and the second reflecting surface 133 is.

[0052] The cross-sectional shape of the electrophoresis box 11 is an isosceles trapezoid, so that the electrophoresis device 10 has the same reflection effect on the pixel light and the ambient light on both sides. The isosceles trapezoidal design helps to better control the propagation and reflection of light in the pixel 20, reduce light scattering and light leakage, improve display contrast and color accuracy, and can also improve the display effect of the display panel 100 at different viewing angles, reducing color shift and brightness changes.

[0053] The isosceles trapezoidal electrophoretic box 11 also cooperates with the rest of the structure of the electrophoretic device 10 to define the boundary and shape of the pixel 20. The isosceles trapezoidal electrophoretic box 11 is also the main component of the electrophoretic device 10, so that the cross-sectional shape of the electrophoretic device 10 is close to an isosceles trapezoid, which is conducive to the production and manufacturing of the electrophoretic device 10. The production and manufacturing processes of the electrophoretic device 10 and the display panel 100 are generally coating, inkjet printing, etching, etc. When using inkjet printing technology to manufacture the organic material film layer, the trapezoidal design helps to reduce the climbing phenomenon of the solution on the side surface of the electrophoretic device 10, which can improve the film formation uniformity of the solution in the pixel 20 area, thereby improving the display effect. By precisely controlling the shape and size of the electrophoretic box 11 and the electrophoretic device 10, the short circuit between the anode layer 40 and the cathode layer 50 and the open circuit phenomenon of the cathode layer 50 can be avoided, and the yield and reliability of the display panel 100 can be improved.

[0054] For reference Figure 1 In one embodiment, the electrophoresis device 10 further includes a first light shielding layer 14 , and the first light shielding layer 14 is disposed on a side of the second reflective structure 13 facing away from the electrophoresis box 11 .

[0055] The first light shielding layer 14 may shield light all the time, or may shield light only when the electrophoretic device 10 is under the action of an electric field, without limitation.

[0056] The first light-shielding layer 14 is mainly used to shield light when the electrophoretic device 10 is in an electric field, that is, when the electrophoretic particle layer 112 is non-black. The first light-shielding layer 14 is used to enhance the display effect of the display panel 100. The first light-shielding layer 14 can effectively prevent ambient light from being reflected on the surface of the display panel 100, thereby reducing glare. The first light-shielding layer 14 can also improve color accuracy, ensuring that the display panel 100 works under a standard light source, avoiding interference from ambient light, thereby improving color accuracy and restoration.

[0057] For reference Figure 1 and Figure 2 In one embodiment, the first light-shielding layer 14 is an electroblackening layer.

[0058] Optionally, the material of the first light shielding layer 14 may also be any one of magnesium oxide, aluminum oxide, silver oxide, and a black matrix material.

[0059] Optionally, the black matrix material, ie, the BM material, may be chromium (Cr) and its oxide (CrOx), black resin (Black Res in), etc., without limitation.

[0060] Optionally, the material of the electroblackening layer is an electroblackening material, and the electroblackening material may be a transition metal oxide and its derivatives, such as tungsten trioxide (WO3), nickel oxide (NiO), etc., without limitation. When the electrophoretic device 10 is not powered on, and the electroblackening material is the first light shielding layer 14, the first light shielding layer 14 is transparent, and the electrophoretic particles 113 in the electrophoretic box 11 are black. The electrophoretic box 11 plays a light shielding role and prevents color mixing. When the electrophoretic device 10 is powered on, and the electroblackening material is the first light shielding layer 14, the first light shielding layer 14 changes from transparent to black, playing a light shielding role.

[0061] When the first light shielding layer 14 is made of magnesium oxide, aluminum oxide, silver oxide, black matrix material, etc., the first light shielding layer 14 always plays a light shielding role in the electrophoretic device 10. When the first light shielding layer 14 is an electro-blackening layer, the first light shielding layer 14 can be light-colored or colorless when no power is supplied, and the first light shielding layer 14 is black under the action of an electric field, and the first light shielding layer 14 plays a light shielding role.

[0062] For reference Figure 1 In one embodiment, the electrophoresis device 10 further includes a second light shielding layer 15 , and the second light shielding layer 15 is disposed on a side of the first reflective structure 12 facing away from the electrophoresis box 11 .

[0063] With reference to the first light shielding layer 14 , the material of the second light shielding layer 15 may be any one of magnesium oxide, aluminum oxide, silver oxide, a black matrix material, and an electro-blackening material, without limitation.

[0064] Optionally, the second light shielding layer 15 is disposed corresponding to the first surface 114 of the electrophoresis box 11 .

[0065] The second light shielding layer 15 may be used to shield a portion of the reflected light of the first reflective structure 12 and the electrophoretic particle layer 112 . The second light shielding layer 15 may further improve the display effect and color accuracy of the display panel 100 .

[0066] For reference Figure 3 In one embodiment, the electrophoretic device 10 further includes a mounting seat 16 , which is disposed on a side of the second light-shielding layer 15 facing away from the first reflective structure 12 , and the mounting seat 16 is a light-shielding structure.

[0067] The material of the mounting base 16 can be metal, specifically aluminum or silver, without limitation. Optionally, the mounting base 16 also includes a protective layer, which can be made of materials such as aluminum oxide (Al2O3), silicon dioxide (SiO2) or silicon nitride (SiN), and the protective layer is used to improve the stability of the mounting base 16.

[0068] The mounting base 16 serves as a pixel definition layer, separating two adjacent pixels 20 and defining the boundary and shape of the pixel 20. The mounting base 16 is used to raise the second light shielding layer 15 so that the second light shielding layer 15 and the first reflective structure 12 protrude from the surface of the anode layer 40 of the display panel 100 facing away from the driving circuit layer 30 to avoid color mixing.

[0069] Specifically, in the first embodiment, the electrophoretic device 10 includes a first light shielding layer 14, a first reflective structure 12, a second reflective structure 13 and an electrophoretic box 11, and the first light shielding layer 14 is an electro-blackening layer; in normal mode, that is, when the electrophoretic device 10 is not powered, the first light shielding layer 14 is transparent, and the electrophoretic particle layer 112 plays a light shielding role to prevent color mixing. When the electrophoretic device 10 is powered, that is, when the electrophoretic device 10 is in an anti-peeping mode, the first light shielding layer 14 is black and plays a role as a light shielding layer.

[0070] In the second embodiment, the electrophoretic device 10 includes a first light shielding layer 14, a first reflective structure 12, a second reflective structure 13 and an electrophoretic box 11, and the first light shielding layer 14 is a non-color-changing material; in normal mode, the first light shielding layer 14 is opaque, and the first light shielding layer 14 and the electrophoretic particle layer 112 jointly shield light to prevent color mixing. When the electrophoretic device 10 is in anti-peep mode, the first light shielding layer 14 still acts as a light shielding layer.

[0071] In the third embodiment, the electrophoretic device 10 includes a first light-shielding layer 14, a first reflective structure 12, a second reflective structure 13, an electrophoretic box 11, and a second light-shielding layer 15, and the first light-shielding layer 14 and the second light-shielding layer 15 are both electro-blackening layers; in normal mode, the first light-shielding layer 14 and the second light-shielding layer 15 are transparent, and the black electrophoretic particle layer 112 acts as a light-shielding layer to prevent color mixing, while absorbing the pixel light reflected by the first reflective layer 122 and the second reflective layer 132 and natural light, and does not form a peek-proof function. When the electrophoretic device 10 is in the peek-proof mode, the first light-shielding layer 14 and the second light-shielding layer 15 change from transparent to black to achieve their peek-proof function, and the electrophoretic particle layer 112 moves a corresponding distance from the first surface 114 to the second surface 115 according to the magnitude of the electric field strength in the electrophoretic device 10. At this time, the electrophoretic particle layer 112 is reflective and can cooperate with the first reflective layer 122 and the second reflective layer 132 to reflect the pixel light and ambient light out of the display device to achieve peek-proof.

[0072] For reference Figure 3 and Figure 4 The present invention provides a display panel 100, comprising a plurality of pixels 20, a driving circuit layer 30 and an electrophoretic device 10 as described in any one of the aforementioned various embodiments, wherein the plurality of pixels 20 are arranged at intervals on the driving circuit layer 30, the electrophoretic device 10 is arranged between two adjacent pixels 20, and the pixels 20 and the electrophoretic device 10 are electrically connected to the driving circuit layer 30.

[0073] The pixel 20 includes a light-emitting layer 80, which includes a plurality of sub-pixels. The sub-pixels may be red sub-pixels, green sub-pixels, blue sub-pixels, etc., without limitation. By adjusting the brightness and color of the sub-pixels, a colorful image may be presented.

[0074] The material of the red sub-pixel may be a phosphorescent material, specifically rubrene, PTPP, DCJTB, Tz-G l, etc., without limitation. The high luminous efficiency of the phosphorescent material provides good performance for the red sub-pixel, ensuring the vividness and saturation of the red display. The material of the green sub-pixel may be a phosphorescent material, specifically Al aq3, TDETE, Coumar in, NpG l, etc., without limitation. The efficient luminous properties of the phosphorescent material enable the green sub-pixel to have a stable green display effect in the display panel 100. The material of the blue sub-pixel may be a fluorescent material, a phosphorescent material, etc., without limitation.

[0075] The pixel 20 further includes an anode layer 40, which is disposed on the driving circuit layer 30, and the light-emitting layer 80 is correspondingly disposed on the anode layer 40. The anode layer 40 can be ITO (indium tin oxide), AZO (aluminum-doped zinc oxide), GZO (gallium-doped zinc oxide), silver (Ag), a polymer conductive film, etc., without limitation.

[0076] The pixel 20 further includes a cathode layer 50, which is disposed on the side of the electrophoretic device 10 and the light-emitting layer 80 facing away from the driving circuit layer 30. Multiple pixels 20 share the same cathode layer 50. The cathode layer 50 may be a single-layer metal cathode, an alloy cathode, a layered cathode, etc., without limitation; the material of the metal cathode may be silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), calcium (Ca), indium (In), etc.; the composition of the alloy cathode may be Mg:Ag (10:1), Li:Al (0.6% Li), etc.; the layered cathode includes a metal cathode and a barrier layer, the barrier layer is disposed between the metal cathode and the pixel 20, and the material of the metal cathode may be LiF, CsF, RbF, etc., without limitation.

[0077] In addition to realizing the anti-peeping function of the display panel 100 , the electrophoretic device 10 also replaces the pixel definition layer. The electrophoretic device 10 exposes the opening of the anode layer 40 or other electrodes, separates two adjacent pixels 20 , and defines the boundary and shape of the pixel 20 .

[0078] Optionally, the display panel 100 further includes an encapsulation portion, which includes a first inorganic encapsulation layer 61 , an organic encapsulation layer 62 , and a second inorganic encapsulation layer 63 stacked in sequence, and the first inorganic encapsulation layer 61 is closer to the cathode layer 50 than the organic encapsulation layer 62 .

[0079] The material of the organic encapsulation layer 62 may be epoxy resin, polyimide (PI), polycarbonate, polyphenylene sulfide, etc., without limitation.

[0080] The materials of the first inorganic encapsulation layer 61 and the second inorganic encapsulation layer 63 may be oxides, nitrides, metals and compounds thereof, and specifically may be aluminum oxide, silicon nitride, etc., without limitation.

[0081] The organic encapsulation layer 62 has good flexibility and buffering performance, can absorb external impact and stress to a certain extent, and protect the display elements inside the display panel 100 from damage; the organic encapsulation layer 62 also has a certain ability to block external harmful substances such as water and oxygen; the organic encapsulation layer 62 has a high light transmittance, which helps to maintain the clarity and brightness of the display panel 100. The organic encapsulation layer 62 can be prepared by a variety of methods, such as inkjet printing, spin coating, blade coating, etc., to accurately control the coating thickness and uniformity of the organic material, so as to meet the requirements of the encapsulation structure.

[0082] The first inorganic encapsulation layer 61 and the second inorganic encapsulation layer 63 have excellent sealing performance, which can effectively block the corrosion of external harmful substances such as water and oxygen on the display elements, and improve the reliability and service life of the display panel 100. The first inorganic encapsulation layer 61 and the second inorganic encapsulation layer 63 also have high hardness and wear resistance, which can protect the display panel 100 from scratches and wear. The first inorganic encapsulation layer 61 and the second inorganic encapsulation layer 63 also need to have good optical transmittance to ensure that the display effect of the display panel 100 is not affected. The first inorganic encapsulation layer 61 and the second inorganic encapsulation layer 63 can be prepared by vapor deposition (such as chemical vapor deposition CVD, physical vapor deposition PVD, etc.), atomic layer deposition (ALD), etc., to form a uniform and dense inorganic thin film layer, thereby improving the performance of the encapsulation structure.

[0083] Optionally, the display panel 100 further includes a liner substrate 70, which is disposed on the side of the driving circuit layer 30 facing away from the electrophoretic device 10. The liner substrate 70 is a basic supporting structure of the display panel 100, and common materials of the liner substrate 70 include glass, plastic (such as polyimide), metal, and some special ceramics or composite materials.

[0084] In the display panel 100 of the present invention, the structure of the first inorganic encapsulation layer 61, the organic encapsulation layer 62 and the second inorganic encapsulation layer 63 stacked in sequence can not only utilize the flexibility and buffering performance of the organic encapsulation layer 62, but also give full play to the high sealing and wear resistance of the inorganic encapsulation layer, thereby achieving comprehensive protection of the display element.

[0085] The display panel 100 of the present invention utilizes ambient light and the light emitted by the pixels 20 to realize the anti-peeping function, thereby enhancing the anti-peeping effect of the display panel 100. The electrophoretic particle layer 112 in the electrophoretic box 11 changes the position of the electrophoretic particles 113 in the electrophoretic box 11 according to the current size when powered on, thereby realizing the adjustable anti-peeping viewing angle and increasing the pixel opening of the display panel 100. At the same time, since there is no need to set a light shielding layer near the light-emitting side of the display panel 100 to prevent color mixing, the viewing angle of the display panel 100 is improved. Due to the bistable characteristics of the electrophoretic particles 113, their power-on characteristics can still be maintained for a period of time after power failure, which can reduce the anti-peeping power consumption of the display panel 100 to a certain extent.

[0086] For reference Figure 5 The present invention provides a display device, including a housing 200 and the display panel 100 described in any one of the aforementioned embodiments, wherein the display panel 100 is accommodated in the housing 200 .

[0087] The display device may be a television, electronic device, monitor, etc., and the electronic device may be a mobile phone, computer, smart wearable, etc., without limitation.

[0088] Optionally, the display device also includes a driving circuit, a control board, an interface, a power supply, other components, etc.

[0089] The driving circuit is suitable for providing correct voltages and signals to the display panel 100 to control the brightness and color of the light-emitting layer. The driving circuit can include a source driver and a gate driver, which are responsible for providing signals to the rows and columns of the display panel 100 respectively.

[0090] The control board is suitable for receiving signals (such as video signals) from external devices and converting them into signals that can be understood by the driving circuit. The control board can also be used for image processing to optimize the display effect of the image.

[0091] The interface may be HDMI, DisplayPort, USB-C, etc., without limitation, so that the display device can be connected to an external device (such as a computer, a game console, a media player, etc.).

[0092] Housing 200 is adapted to provide physical protection and support for the display device while protecting internal components from dust, moisture, and other external elements.

[0093] The power source is suitable for providing the required power to the display device, and the power source may be a built-in power adapter or a battery.

[0094] Other components may be touch screens, speakers, cameras, sensors, etc.

[0095] The display device of the present invention has high light efficiency utilization rate, and increases the pixel opening of the display device.

[0096] The display device of the present invention can use ambient light and the light emitted by the pixel 20 to jointly realize the anti-peeping function, thereby enhancing the anti-peeping effect of the display device. The electrophoretic particle layer 112 in the electrophoretic box 11 changes the position of the electrophoretic particles 113 in the electrophoretic box 11 according to the current size when the power is turned on, thereby realizing the adjustable anti-peeping viewing angle. At the same time, since there is no need to set a light shielding layer near the light-emitting side of the display panel 100 to prevent color mixing, the viewing angle of the display device is improved. Due to the bistable characteristics of the electrophoretic particles 113, their power-on characteristics can still be maintained for a period of time after power failure, which can reduce the anti-peeping power consumption of the display device to a certain extent.

[0097] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0098] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An electrophoresis device, characterized in that: For display panels, including: An electrophoresis box, comprising a box body and an electrophoresis particle layer, wherein the electrophoresis particle layer is arranged in the box body, the box body comprises a first surface and a second surface opposite to each other, and the box body is a transparent structure; A first reflective structure, disposed on the first surface, the first reflective structure comprising a first reflective surface, the first reflective surface facing the electrophoresis box; A second reflective structure, disposed on the second surface, the second reflective structure comprising a second reflective surface, and the second reflective surface faces the electrophoresis box; The electrophoretic particle layer is used to move between the first surface and the second surface under the action of an electric field; when the electrophoretic device is powered on, the electrophoretic particle layer is used to reflect light.

2. The electrophoresis device according to claim 1, characterized in that: The first reflecting surface is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface; the second reflecting surface is any one of a curved surface, a combination of a plane and a plane, a combination of a plane and a curved surface, and a combination of a curved surface and a curved surface.

3. The electrophoresis device according to claim 1, characterized in that: The first reflective structure includes a first packaging layer and a first reflective layer. The first reflective layer has the first reflective surface. The first reflective layer is accommodated in the first packaging layer. The first packaging layer is a transparent structure.

4. The electrophoresis device according to claim 1, characterized in that: The cross-sectional shape of the electrophoresis box is an isosceles trapezoid, the first surface is the lower base of the isosceles trapezoid, and the second surface is the upper base of the isosceles trapezoid.

5. The electrophoresis device according to any one of claims 1 to 4, characterized in that: The electrophoresis device further includes a first light shielding layer, which is arranged on a side of the second reflective structure facing away from the electrophoresis box.

6. The electrophoresis device according to claim 5, characterized in that: The first light-shielding layer is an electrochromic layer.

7. The electrophoresis device according to claim 5, characterized in that: The electrophoresis device further includes a second light shielding layer, which is arranged on a side of the first reflective structure facing away from the electrophoresis box.

8. The electrophoresis device according to claim 7, characterized in that: The electrophoresis device further includes a mounting seat, which is disposed on a side of the second light-shielding layer facing away from the first reflective structure, and is a light-shielding structure.

9. A display panel, characterized in that: It comprises a plurality of pixels, a driving circuit layer and an electrophoretic device as claimed in any one of claims 1 to 7, wherein the plurality of pixels are arranged on the driving circuit layer at intervals, the electrophoretic device is arranged between two adjacent pixels, and the pixels and the electrophoretic device are electrically connected to the driving circuit layer.

10. A display device, characterized in that: The invention comprises a housing and the display panel as claimed in claim 9, wherein the display panel is accommodated in the housing.

Images