Display panel and display device thereof

Abstract

The present application provides a display panel and a display device thereof, wherein the display panel is divided into a normal display area and an anti-peeping area, wherein the anti-peeping area is located between adjacent normal display areas, wherein the anti-peeping area is provided with a plurality of anti-peeping units, each of which includes a microfluidic unit, a first reflective unit and a shading unit, specifically, the anti-peeping unit can interfere with a picture viewed at an oblique viewing angle of the display panel, thereby realizing the anti-peeping function of the online panel.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a display panel and a display device thereof. Background Art

[0002] At present, mobile phones and other display products have become indispensable tools in the information society. As display products become more and more diversified, OLED display panels are increasingly used in mobile phones, smart wearable devices, notebooks and other electronic devices. OLED display panels have the advantages of active luminescence, low power consumption, fast response speed, wide viewing angle, etc., which can provide users with a better viewing experience. However, some users now pay more attention to privacy, and companies also pay more attention to commercial secrets. Therefore, display products with anti-peeping functions are more popular.

[0003] In some cases, users hope to reduce the viewing angle of the OLED display panel to achieve an anti-peeping function. Summary of the invention

[0004] In order to solve the above problems, the present application provides a display panel and a display device thereof, wherein the display panel can realize an anti-peeping function.

[0005] In order to solve the above problems, the first technical solution provided by the present application is: providing a display panel, comprising a substrate, a driving circuit layer, an anode layer, a pixel definition layer, a common electrode layer and a packaging layer stacked in sequence, the display panel is divided into a normal display area and an anti-peeping area, the anti-peeping area is located between adjacent normal display areas, and the display panel also includes:

[0006] a light-emitting layer, located in the pixel definition layer and comprising a plurality of sub-pixels arranged in the normal display area;

[0007] A plurality of anti-peeping units are arranged corresponding to the anti-peeping areas, each of the anti-peeping units includes a microfluidic unit, a first light reflecting unit and a light shielding unit;

[0008] In which, the microfluidic unit includes a droplet, and the droplet contains a charged substance. When a voltage is applied to the microfluidic unit, the charged substance can move in the droplet according to the dielectrophoretic force, and can reflect and / or scatter the light entering the droplet to form a first output light; the first reflecting unit is used to guide the light emitted by the sub-pixel to the microfluidic unit, or to guide the first output light to the light output side of the display panel; the shading unit is used to block part of the first output light that is emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0009] In one embodiment, in each of the privacy protection units, the first light reflecting unit is located on a side of the microfluidic unit facing away from the substrate, the light shielding unit is located on a side of the first light reflecting unit facing away from the microfluidic unit, and the projection of the microfluidic unit in the normal viewing direction of the display panel is completely within the projection of the light shielding unit in the normal viewing direction of the display panel;

[0010] Among them, the first reflecting unit is used to guide the light emitted by the sub-pixel to the microfluidic unit, and under the condition of applying voltage to the microfluidic unit, the microfluidic unit is used to convert the light transmitted to the microfluidic unit by the first reflecting unit into the first output light, and the shading unit is used to block part of the first output light emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0011] In one embodiment, in each of the anti-peeping units, the microfluidic unit is arranged in the pixel definition layer, the first reflecting unit is arranged on the surface of the packaging layer away from the common electrode layer, and the shading unit is arranged on the surface of the first reflecting unit away from the packaging layer.

[0012] In one embodiment, in each of the privacy protection units, the microfluidic unit is located on a side of the first light reflecting unit away from the substrate, the light shielding unit is located on a side of the microfluidic unit away from the first light reflecting unit, and a projection of the first light reflecting unit in the normal viewing direction of the display panel is completely within a projection of the light shielding unit in the normal viewing direction of the display panel;

[0013] Wherein, under the condition of applying voltage to the microfluidic unit, the microfluidic unit is used to convert the light transmitted from the sub-pixel to the microfluidic unit into the first output light; the first reflecting unit is used to guide the first output light to the light output side of the display panel; the shading unit is used to block part of the first output light emitted in the normal viewing direction of the display panel, and the output direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0014] In one embodiment, in each of the anti-peeping units, the first reflective unit is arranged in the pixel definition layer, the microfluidic unit is arranged on the surface of the packaging layer away from the common electrode layer, and the shading unit is arranged on the surface of the microfluidic unit away from the packaging layer.

[0015] In one embodiment, the display panel has a first side and a second side opposite to each other; and the display panel has an anti-peeping mode and a sharing mode;

[0016] Among them, the anti-peeping mode includes a first-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side of the display panel, a second-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the second side of the display panel, and a double-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side and the second side of the display panel.

[0017] In one embodiment, each of the microfluidic units is located between sub-pixels of different colors, and the charged substance in the microfluidic unit close to the first side of the sub-pixel includes colored particles of the same color as the sub-pixel;

[0018] Wherein, under the condition of applying voltage to the microfluidic unit, the first outgoing light formed by the microfluidic unit is emitted in the oblique viewing direction toward the first side to interfere with the picture viewed at the oblique viewing direction of the first side of the display panel to form the first side anti-peeping mode.

[0019] In one embodiment, each of the microfluidic units is located between sub-pixels of different colors, and the charged substance in the microfluidic unit close to the second side of the sub-pixel includes colored particles of the same color as the sub-pixel;

[0020] Wherein, under the condition of applying voltage to the microfluidic unit, the first output light formed by the microfluidic unit is emitted in the oblique viewing direction toward the second side to interfere with the picture viewed at the oblique viewing direction of the second side of the display panel to form the second side anti-peep mode.

[0021] In one embodiment, the plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel located at a first side of the first color sub-pixel, and a third color sub-pixel located at a second side of the first color sub-pixel, and a first microfluidic unit and a first light shielding unit are provided between the first color sub-pixel and the second color sub-pixel, the charged substance in the first microfluidic unit includes color particles of the second color, a second microfluidic unit and a second light shielding unit are provided between the first color sub-pixel and the third color sub-pixel, and the charged substance in the second microfluidic unit includes color particles of the third color;

[0022] Wherein, under the condition of applying voltage to the first microfluidic unit and the second microfluidic unit, the first microfluidic unit forms the first output light with a second color emitted in an oblique viewing direction toward the second side to interfere with the picture viewed at the oblique viewing direction of the first side of the display panel; and the second microfluidic unit forms the first output light with a third color emitted in an oblique viewing direction toward the first side to interfere with the picture viewed at the oblique viewing direction of the second side of the display panel to form the double-sided anti-peep mode.

[0023] In one embodiment, the anti-peeping unit further includes:

[0024] A second light-reflecting unit is arranged on the side of the liquid droplet away from the first light-reflecting unit, and the second light-reflecting unit is used to guide the light transmitted through the liquid droplet to the light-emitting side of the display panel to form a second emitted light; the light-shielding unit is used to shield part of the second emitted light emitted in the normal viewing direction of the display panel, and the emission direction of another part of the second emitted light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0025] In one embodiment, the microfluidic unit comprises:

[0026] A first electrode and a second electrode are arranged opposite to each other along a direction from the substrate toward the encapsulation layer;

[0027] The hydrophobic layer comprises a receiving cavity, and a side of the receiving cavity close to the first light reflecting unit has an opening;

[0028] A transparent encapsulation layer, sealing the opening;

[0029] The droplets are water-in-oil droplets or scattering particle droplets, and under the condition that there is a voltage difference between the first electrode and the second electrode, at least part of the charged material in the droplets moves from the side close to the bottom of the accommodating cavity toward the side of the transparent encapsulation layer, so that the display panel is switched from the sharing mode to the anti-peeping mode.

[0030] In one embodiment, when no voltage is applied to the first electrode and the second electrode, the charged substance in the droplet is located at the bottom of the accommodating cavity, and the color of the droplet and the color of the charged substance interfere with each other to make the whole droplet appear black.

[0031] In order to solve the above problem, the second technical solution provided by the present application is: to provide a display device, comprising:

[0032] A shell having a receiving cavity;

[0033] The display panel is disposed in the receiving cavity, and the display panel is any one of the display panels described above.

[0034] The beneficial effect of the present application is that, different from the prior art, the display panel provided by the present application is divided into a normal display area and an anti-peeping area, the anti-peeping area is located between adjacent normal display areas, and the anti-peeping area is provided with a plurality of anti-peeping units, each of which includes a microfluidic unit, a first light reflecting unit and a light shielding unit; wherein the microfluidic unit includes a droplet, and the droplet contains a charged substance, and when a voltage is applied to the microfluidic unit, the charged substance can move in the droplet according to the dielectrophoretic force, and can reflect and / or scatter the light entering the droplet to form a first output light; the first light reflecting unit is used to guide the light emitted by the sub-pixel to the microfluidic unit, or to guide the first output light to the light output side of the display panel; the light shielding unit is used to shield part of the first output light emitted in the normal viewing direction of the display panel, and the output direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel, thereby realizing the anti-peeping function of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0036] Figure 1 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state I provided in the first embodiment of the present application;

[0037] Figure 2 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state II provided in the first embodiment of the present application;

[0038] Figure 3 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the third state provided in the first embodiment of the present application;

[0039] Figure 4 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the first state provided in the second embodiment of the present application;

[0040] Figure 5 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state II provided in the second embodiment of the present application;

[0041] Figure 6A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the third state provided in the second embodiment of the present application;

[0042] Figure 7 A schematic diagram of the structure of a microfluidic unit for charged substances in a droplet provided in the present application in the first state;

[0043] Figure 8 A schematic diagram of the structure of a microfluidic unit for charged substances in a droplet provided in the present application in the second state;

[0044] Fig. 9 The simulated electric field distribution diagram of the droplets provided in this application;

[0045] Fig.10 A schematic diagram of the structure of a microfluidic unit in which charged substances in a droplet are in the third state provided in the present application;

[0046] Fig.11 A schematic diagram of light rays of a display panel in a first side anti-peeping mode provided by the first embodiment of the present application;

[0047] Fig.12 A schematic diagram of light rays of the display panel in the second side anti-peeping mode provided by the first embodiment of the present application;

[0048] Fig.13 A schematic diagram of light rays of a display panel in a double-sided privacy protection mode provided in the first embodiment of the present application;

[0049] Fig.14 A schematic diagram of light rays of a display panel in a first side anti-peeping mode provided by a second embodiment of the present application;

[0050] Fig.15 A schematic diagram of light rays of a display panel in a second side anti-peeping mode provided by a second embodiment of the present application;

[0051] Fig.16 A schematic diagram of light rays of a display panel in a double-sided anti-peeping mode provided in the second embodiment of the present application;

[0052] Fig.17 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0053] Description of labels:

[0054] Substrate-10; driving circuit layer-20; anode layer-30; pixel definition layer-40; common electrode layer-50; encapsulation layer-60; light-emitting layer-70; sub-pixel-P; anti-peeping unit-80; droplet-811; charged substance-812; first electrode-813; second electrode-814; hydrophobic layer-815; transparent encapsulation layer-816; microfluidic unit-81; first light reflecting unit-82; light shielding unit-83; second light reflecting unit-84;

[0055] Display device-1000; display panel-100; housing-200;

[0056] Normal display area-A1; anti-peeping area-A2; first emitted light-B1; second emitted light-B2. DETAILED DESCRIPTION

[0057] 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.

[0058] The terms "first", "second", "third", etc. in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", "third" may explicitly or implicitly include at least one of the features.

[0059] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0060] OLED display panels have a wide viewing angle performance, and the picture will not be distorted in a large viewing angle range, and its vertical and horizontal viewing angle can reach about 170 degrees. However, in some occasions, it is hoped to reduce the viewing angle of the OLED display panel to achieve an anti-peeping function.

[0061] To solve the above problems, this proposal provides a display panel that can utilize the principle of an electro-microfluidic unit to enable the display panel to switch between a shared mode and an anti-peeping mode without adding anti-peeping pixels, thereby effectively saving power consumption.

[0062] The display panel includes an organic light-emitting diode (OLED) display panel or a micro light-emitting diode (Micro LED) display panel. This application takes the display panel including the OLED display panel as an example.

[0063] See also Figure 1-Figure 10 , Figure 1 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state I provided in the first embodiment of the present application; Figure 2 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state II provided in the first embodiment of the present application; Figure 3 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the third state provided in the first embodiment of the present application; Figure 4 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the first state provided in the second embodiment of the present application; Figure 5 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in state II provided in the second embodiment of the present application; Figure 6 A schematic diagram of light rays of charged substances in a droplet in a partial structure of a display panel in the third state provided in the second embodiment of the present application; Figure 7 A schematic diagram of the structure of a microfluidic unit for charged substances in a droplet provided in the present application in the first state; Figure 8 A schematic diagram of the structure of a microfluidic unit for charged substances in a droplet provided in the present application in the second state; Fig. 9 The simulated electric field distribution diagram of the droplets provided in this application; Fig.10 This is a schematic diagram of the structure of the microfluidic unit in the third state of the charged substance in the droplet provided in the present application.

[0064] Specifically, the display panel includes a substrate 10, a driving circuit layer 20, an anode layer 30, a pixel definition layer 40, a common electrode layer 50 and a packaging layer 60 which are stacked in sequence, and the display panel is divided into a normal display area A1 and an anti-peeping area A2, and the anti-peeping area A2 is located between adjacent normal display areas A1.

[0065] Among them, in this application, the relevant components in the normal display area A1 can display normal images under the working conditions of the display panel, while the relevant components in the anti-peeping area A2 can interfere with the wide viewing angle of the normal display area A1 under working conditions, so that the user can only watch the image displayed by the display panel under a specific viewing angle (such as a normal viewing angle), thereby realizing the anti-peeping function of the display panel. In addition, in this application, when the relevant components in the anti-peeping area A2 are not working, the image displayed in the normal display area A1 still has the characteristics of a wide viewing angle, thereby realizing the display panel switching between the sharing mode and the anti-peeping mode.

[0066] Furthermore, the display panel also includes a light-emitting layer 70 and a plurality of anti-peeping units 80, wherein the light-emitting layer 70 is located in the pixel definition layer 40 and includes a plurality of sub-pixels P arranged in the normal display area A1, and the plurality of sub-pixels P are used to emit light under working conditions so that the display panel displays a corresponding picture; the plurality of anti-peeping units 80 are arranged corresponding to the anti-peeping area A2, and each anti-peeping unit 80 includes a microfluidic unit 81, a first reflecting unit 82 and a shading unit 83.

[0067] The microfluidic unit 81 includes a droplet 811, and the droplet 811 has a charged substance 812. Specifically, the principle of the microfluidic unit 81 in the present application is: when a voltage is applied to the microfluidic unit 81 (i.e., anti-peeping mode), the charged substance 812 can move in the droplet 811 according to the dielectrophoretic force, and can reflect and / or scatter the light entering the droplet 811 to form a first outgoing light B1. The first outgoing light B1 is used to interfere with the wide viewing angle characteristics of the display screen of the normal display area A1 under working conditions. And the microfluidic unit 81 provided in the present application, when no voltage is applied to the microfluidic unit 81 (i.e., sharing mode), because the charged substance 812 in the droplet 811 is in the initial state, and the characteristics of the droplet 811 are set, the light entering the droplet 811 will not be reflected and / or scattered, so it will not affect the wide viewing angle characteristics of the display screen of the normal display area A1 under working conditions.

[0068] The first light reflecting unit 82 is used to guide the light emitted by the sub-pixel P to the microfluidic unit 81, and then the light entering the microfluidic unit 81 is reflected and / or scattered by the microfluidic unit 81 to form the first output light B1. Alternatively, the first light reflecting unit 82 is used to guide the first output light B1 formed by reflection and / or scattering of the microfluidic unit 81 to the light output side of the display panel.

[0069] Among them, the shading unit 83 is used to block part of the first emitted light B1 emitted in the normal viewing angle direction of the display panel, so as to prevent the first emitted light B1 from affecting the viewing experience of the picture displayed in the normal display area A1 at the normal viewing angle; in addition, the emission direction of part of the first emitted light B1 corresponds to the oblique viewing angle direction of the display panel, so as to interfere with the picture viewed at the oblique viewing angle direction of the display panel, thereby reducing the viewing angle of the display panel, thereby realizing the anti-peeping function and meeting some requirements for privacy and security.

[0070] In addition, the display panel provided in the present application does not require the addition of anti-peeping pixels, and can effectively save power consumption.

[0071] See also Figure 1 and Figure 3 In the first embodiment of the present application, in each anti-peep unit 80, the first reflecting unit 82 is located on the side of the microfluidic unit 81 away from the substrate 10, the shading unit 83 is located on the side of the first reflecting unit 82 away from the microfluidic unit 81, and the projection of the microfluidic unit 81 in the positive viewing direction of the display panel is completely located within the projection of the shading unit 83 in the positive viewing direction of the display panel. For example, the microfluidic unit 81 may be located in the pixel definition layer 40 and on the surface of the anode layer 30 facing away from the substrate 10, the first light reflecting unit 82 is located on the surface of the encapsulation layer 60 facing away from the substrate 10, and the shading unit 83 is located on the surface of the first light reflecting unit 82 facing away from the encapsulation layer 60; or the microfluidic unit 81 may be located in the pixel definition layer 40 and on the surface of the anode layer 30 facing away from the substrate 10, the first light reflecting unit 82 is located on the surface of the common electrode layer 50 facing away from the substrate 10, and the shading unit 83 is located on the surface of the encapsulation layer 60 facing away from the substrate 10; or the microfluidic unit 81 may be located on the surface of the common electrode layer 50 facing away from the substrate 10, the first light reflecting unit 82 is located on the surface of the encapsulation layer 60 facing away from the substrate 10, and the shading unit 83 is located on the surface of the first light reflecting unit 82 facing away from the encapsulation layer 60, etc., which is not limited here.

[0072] Specifically, in the present embodiment, the first reflective unit 82 is used to guide the light emitted by the sub-pixel P to the microfluidic unit 81, and under the condition of applying voltage to the microfluidic unit 81, the microfluidic unit 81 is used to convert the light transmitted from the first reflective unit 82 to the microfluidic unit 81 into the first output light B1, and the shading unit 83 is used to block part of the first output light B1 emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first output light B1 corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0073] In the first embodiment of the present application, in each anti-peep unit 80, the microfluidic unit 81 is arranged in the pixel definition layer 40 and located on the surface of the anode layer 30 away from the substrate 10, the first light reflecting unit 82 is arranged on the surface of the encapsulation layer 60 away from the common electrode layer 50, and the light shielding unit 83 is arranged on the surface of the first light reflecting unit 82 away from the encapsulation layer 60. The beneficial effect of this design is that the microfluidic unit 81 is arranged between the anode layer 30 and the common electrode layer 50, and the anode layer 30 and the common electrode layer 50 can be used as the upper and lower electrodes of the microfluidic unit, thereby saving device cost and simplifying device structure design.

[0074] It should be noted that in the present application, the anode layer 30 includes a plurality of anodes, each of which corresponds to an opening design of the pixel definition layer 40; the common electrode layer 50 and the encapsulation layer 60 are both transparent film layers, which will not affect the conduction of light. In some embodiments, the encapsulation layer 60 is a multi-layer structure, such as a double-layer structure, a three-layer structure, or a five-layer structure. The present application takes the encapsulation layer 60 as a three-layer structure as an example, and the encapsulation layer 60 includes a first inorganic encapsulation layer 61, an organic encapsulation layer 62, and a second inorganic encapsulation layer 63 stacked to isolate external water vapor from entering the display panel.

[0075] See also Figure 4 and Figure 6 In the second embodiment of the present application, in each anti-peep unit 80, the microfluidic unit 81 is located on the side of the first reflective unit 82 away from the substrate 10, the shading unit 83 is located on the side of the microfluidic unit 81 away from the first reflective unit 82, and the projection of the first reflective unit 82 in the positive viewing direction of the display panel is completely located within the projection of the shading unit 83 in the positive viewing direction of the display panel. For example, the first light reflecting unit 82 is located in the pixel definition layer 40 and on the surface of the anode layer 30 facing away from the substrate 10, the microfluidic unit 81 is located on the surface of the packaging layer 60 facing away from the substrate 10, and the shading unit 83 is located on the surface of the microfluidic unit 81 facing away from the substrate 10; or the first light reflecting unit 82 is located in the pixel definition layer 40 and on the surface of the anode layer 30 facing away from the substrate 10, the microfluidic unit 81 is located on the surface of the common electrode layer 50 facing away from the substrate 10, and the shading unit 83 is located on the surface of the packaging layer 60 facing away from the substrate 10; or the first light reflecting unit 82 is located on the surface of the common electrode layer 50 facing away from the substrate 10, the microfluidic unit 81 is located on the surface of the packaging layer 60 facing away from the substrate 10, and the shading unit 83 is located on the surface of the microfluidic unit 81 facing away from the substrate 10, etc., which is not limited here.

[0076] Among them, under the condition of applying voltage to the microfluidic unit 81, the microfluidic unit 81 is used to convert the light transmitted from the sub-pixel P to the microfluidic unit 81 into the first output light B1; the first reflecting unit 82 is used to guide the first output light B1 to the light output side of the display panel; the shading unit 83 is used to block part of the first output light B1 emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first output light B1 corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0077] In the second embodiment of the present application, in each privacy protection unit 80, the first light reflecting unit 82 is located in the pixel definition layer 40 and on the surface of the anode layer 30 away from the substrate 10, the microfluidic unit 81 is located on the surface of the encapsulation layer 60 away from the substrate 10, and the light shielding unit 83 is located on the surface of the microfluidic unit 81 away from the substrate 10. The beneficial effect of this design is that the distance between the first light reflecting unit 82 and the microfluidic unit 81 is the farthest, so that the first light reflecting unit 82 can have a larger reflection angle for the first emergent light B1, which is conducive to achieving a better privacy protection effect.

[0078] In addition, in the second embodiment of the present application, the pixel definition layer 40 located in the anti-peeping area A2 is filled with a transparent substance to support the film layer thereon.

[0079] In the present application, the display panel has a first side and a second side opposite to each other; wherein the first side and the second side can be understood as the left and right sides of the display panel at a normal viewing angle. The display panel has an anti-peeping mode and a sharing mode. The sharing mode is the state of the display panel when no voltage is applied to the microfluidic unit 81, and the anti-peeping mode is the state of the display panel when a voltage is applied to the microfluidic unit 81.

[0080] Among them, in order to adapt to different usage scenarios and meet different usage requirements, the anti-peeping mode in the present application includes a first-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side of the display panel, a second-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the second side of the display panel, and a double-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side and the second side of the display panel.

[0081] The display panel may include at least one of a first side anti-peeping mode, a second side anti-peeping mode and a double-side anti-peeping mode.

[0082] Among them, see Fig.11 and Fig.14 , Fig.11 A schematic diagram of light rays of a display panel in a first side anti-peeping mode provided by the first embodiment of the present application; Fig.14A schematic diagram of light in the first side anti-peeping mode of the display panel provided in the second embodiment of the present application. In the display panel with the first side anti-peeping mode, each microfluidic unit 81 is located between sub-pixels P of different colors, and the charged substance 812 in the microfluidic unit 81 close to the first side of the sub-pixel P includes colored particles of the same color as the sub-pixel P; wherein, when a voltage is applied to the microfluidic unit 81, the microfluidic unit 81 forms a first emitting light B1 emitted in the oblique viewing direction of the first side to interfere with the picture viewed at the oblique viewing direction of the first side of the display panel, so as to form the first side anti-peeping mode.

[0083] Among them, see Fig.12 and Fig.15 , Fig.12 A schematic diagram of light rays of the display panel in the second side anti-peeping mode provided by the first embodiment of the present application; Fig.15 A schematic diagram of light in the second side anti-peeping mode of the display panel provided in the second embodiment of the present application. In the display panel with the second side anti-peeping mode, each microfluidic unit 81 is located between sub-pixels P of different colors, and the charged substance 812 in the microfluidic unit 81 close to the second side of the sub-pixel P includes colored particles of the same color as the sub-pixel P; wherein, when a voltage is applied to the microfluidic unit 81, the microfluidic unit 81 forms a first emitting light B1 emitted in the oblique viewing direction of the second side to interfere with the picture viewed at the oblique viewing direction of the second side of the display panel, so as to form the second side anti-peeping mode.

[0084] Among them, see Fig.13 and Fig.16 , Fig.13 A schematic diagram of light rays of a display panel in a double-sided anti-peeping mode provided in the first embodiment of the present application; Fig.16A schematic diagram of light rays of a display panel in a double-sided anti-peeping mode provided in the second embodiment of the present application. In a display panel with a double-sided anti-peeping mode, a plurality of sub-pixels P include a first color sub-pixel, a second color sub-pixel located on a first side of the first color sub-pixel, and a third color sub-pixel located on a second side of the first color sub-pixel, and a first microfluidic unit and a first shading unit are provided between the first color sub-pixel and the second color sub-pixel, the charged substance 812 in the first microfluidic unit includes colored particles of a second color, a second microfluidic unit and a second shading unit are provided between the first color sub-pixel and the third color sub-pixel, and the charged substance 812 in the second microfluidic unit includes colored particles of a third color; wherein, under the condition of applying voltage to the first microfluidic unit and the second microfluidic unit, the first microfluidic unit forms a first output light B1 having a second color that is emitted in an oblique viewing direction toward the second side to interfere with a picture viewed at an oblique viewing direction on the first side of the display panel; and the second microfluidic unit forms a first output light B1 having a third color that is emitted in an oblique viewing direction toward the first side to interfere with a picture viewed at an oblique viewing direction on the second side of the display panel to form a double-sided anti-peeping mode.

[0085] The first color sub-pixel, the second color sub-pixel and the third color sub-pixel may be one of a red sub-pixel P, a blue sub-pixel P and a green sub-pixel P respectively, and the colors of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are different.

[0086] In the embodiment of the present application, the microfluidic unit 81 includes a first electrode 813 , a second electrode 814 , a hydrophobic layer 815 , a transparent encapsulation layer 816 and a droplet 811 .

[0087] The first electrode 813 and the second electrode 814 are arranged opposite to each other along the direction from the substrate 10 to the encapsulation layer 60; Figure 1-Figure 3 For the first embodiment of the present application shown in FIG. 1 , the anode and common electrode layer 50 in the display panel are reused as the first electrode 813 and the second electrode 814 of the microfluidic unit 81. Figure 4-Figure 6 In the second embodiment of the present application, the first electrode 813 and the second electrode 814 of the microfluidic unit 81 are separately provided. In addition, for the first and second embodiments, at least the electrode close to one side of the microfluidic unit 81 is a transparent electrode.

[0088] Among them, the hydrophobic layer 815 includes a accommodating cavity, the droplet 811 is arranged in the accommodating cavity (not marked in the figure), and the side of the accommodating cavity close to the first reflective unit 82 has an opening (not marked in the figure); the transparent encapsulation layer 816 blocks the opening, so that the first reflective unit 82 can guide the light of the sub-pixel P into the droplet 811 through the transparent encapsulation layer 816, or the first output light B1 formed by the droplet 811 is transmitted to the first reflective unit 82 through the transparent encapsulation layer 816, wherein the material of the bottom wall of the accommodating cavity is a hydrophobic dielectric material, so that the electrode located on the bottom wall of the accommodating cavity can apply voltage to the droplet 811 through the bottom wall of the accommodating cavity.

[0089] Among them, the droplet 811 can be an oil-in-water droplet or a scattering particle droplet, and under the condition that there is a voltage difference between the first electrode 813 and the second electrode 814, at least part of the charged substance 812 in the droplet 811 moves from the side close to the bottom of the accommodating cavity toward the side of the transparent encapsulation layer 816, so that during the movement, the light entering the droplet 811 can be reflected and / or scattered to form a first output light B1, so that the display panel can be switched from the sharing mode to the anti-peeping mode.

[0090] Among them, under the condition that no voltage is applied to the first electrode 813 and the second electrode 814, the charged substance 812 in the droplet 811 is located at the bottom of the accommodating cavity, and the color of the droplet 811 and the color of the charged substance 812 interfere with each other to make the whole black. The light entering the droplet 811 will not be reflected and / or scattered, so it will not affect the wide viewing angle characteristics of the display screen in the normal display area A1 under working conditions.

[0091] For example, the droplet 811 is a water-in-oil droplet and the charged substance 812 is a colored particle. Figure 8 and Fig.10 If a voltage is applied to the microfluidic unit 81, the colored particles move in the droplet 811 in a direction away from the bottom of the accommodating cavity (the second state or the third state), and gradually approach the top of the droplet 811. The droplet 811 can reflect light of different colors as the colored particles move, and emit light of a wide viewing angle from the pixel gap, thereby interfering with the wide viewing angle light of the front display sub-pixel P, so that the display panel cannot display the picture normally at a wide viewing angle, for example, it can only be displayed at the normal viewing angle of the display panel.

[0092] See also Figure 7, when no driving voltage is applied to the microfluidic unit 81, the colored particles in the oil-in-water droplet are all deposited at the bottom (state I), and the droplet 811 is in a black state as a whole, and will not reflect other colored light, and the large viewing angle light of the front display sub-pixel P will not be disturbed, thereby realizing the sharing function. Specifically, if the colored particles in the oil-in-water droplet are red particles, the droplet 811 is its complementary color cyan. When no voltage is applied to the microfluidic unit 81, when the red particles are deposited near the bottom of the droplet 811 near the accommodating cavity, the cyan color of the droplet 811 and the red color of the particles complement each other and appear black. At this time, the droplet 811 does not have the performance of reflection and scattering, and the display panel is in sharing mode; if a voltage is applied to the microfluidic unit 81, the red particles move to the top of the droplet 811 away from the bottom wall of the accommodating cavity, and finally cover the entire top. At this time, the droplet 811 displays red and has the performance of reflection and scattering, and the display panel is in anti-peeping mode. By analogy, when the colored particles in the water-in-oil droplets are green particles or blue particles, the droplets 811 are their complementary colors purple or yellow, and the switching between black and green or blue particles is also achieved to realize the switching between anti-peeping and sharing modes.

[0093] See also Figure 2 and Figure 5 In the first and second embodiments of the present application, the anti-peeping unit 80 further includes a second reflecting unit 84, wherein the second reflecting unit 84 is arranged on the side of the droplet 811 away from the first reflecting unit 82, and the second reflecting unit 84 is used to guide the light transmitted through the droplet 811 to the light emitting side of the display panel to form a second emitted light B2; the shading unit 83 is used to block part of the second emitted light B2 emitted in the normal viewing direction of the display panel, and the emitting direction of another part of the second emitted light B2 corresponds to the oblique viewing direction of the display panel to interfere with the picture viewed in the oblique viewing direction of the display panel.

[0094] Among them, the second reflecting unit 84 can be located between the droplet 811 and the bottom of the accommodating cavity; or the second reflecting unit 84 can be located between the hydrophobic layer 815 and the anode; or the second reflecting unit 84 can be located between the anode and the driving circuit layer 20, which is not limited here.

[0095] Specifically, when the colored particles move in the oil-in-water droplets, the colored particles are in a ring shape in the middle of the oil-in-water droplets (state II), and the droplets 811 exhibit transmissive properties at this time. The light passes through the dyed water droplets and is reflected by the second reflective unit 84 and emitted from the wide viewing angle direction, thereby interfering with the wide viewing angle light of the front display pixels, so as to speed up the realization of the anti-peeping function. When the voltage is applied, the anti-peeping display function responds quickly to avoid making the switching time of the anti-peeping-sharing mode too long.

[0096] Specifically, the microfluidic unit 81 drives the colored particles in the oil-in-water droplets through an alternating electric field. Combined with the dielectrophoretic force and the force between particles, the colored particles can slide along the liquid-liquid interface of the droplet 811. This can not only control the height position of the colored particles in the droplet 811, but also adjust the structure formed by the assembly of the colored particles, thereby providing more optical control possibilities.

[0097] Combination Figure 8 and Fig. 9 In the embodiment of the microfluidic unit 81 of the present application, the colored particles are colored polystyrene (PS) particles having a lower dielectric constant and conductivity than the aqueous phase. The particles have the characteristics of stable dispersion and non-agglomeration in the droplet 811, and can move better in the oil-in-water droplet. And according to the working principle of the microfluidic device, in the yz plane, E decreases radially from the center to the surface of the droplet 811, inducing the distribution of particles in the low-intensity area near the edge of the droplet 811. Similar E distributions in the xz plane and the yz plane jointly cause the particles to diffuse radially from the center to the edge and move upward along the interface of the droplet 811, thereby obtaining a ring structure, that is, the charged substance 812 is in the second state.

[0098] Furthermore, in the embodiment of the present application, when the colored particles and the oil-in-water droplets are materials of some special properties, after a certain voltage is applied to the microfluidic unit 81 to reach a certain state, the voltage is stopped, and the colored particles and the droplets 811 can maintain the second state or the third state for a certain period of time. During this period of time, the display panel exhibits the anti-peeping mode. After a period of time, the voltage is applied to the microfluidic unit 81 again to continue to maintain the anti-peeping mode. The cycle operation utilizes the bistable display characteristics to effectively save power consumption. Moreover, when a voltage in the opposite direction is applied to the microfluidic unit 81, the electric field in the opposite direction can allow the colored particles to quickly move from the second state or the third state to the first state in the droplet 811, realizing a rapid switch between the anti-peeping and sharing states.

[0099] The above scheme is based on the working principle of microfluidic devices, and bistability is achieved by balancing the density of colored particles and water phase. For example, a density-matched dispersion, PS particles (density, ~1.06 g cm -3 ) suspended in an aqueous solution containing 14.2wt% glucose and 4.35% v / v glycerol, the droplet 811 can still display the corresponding color and reflective properties 30 minutes after power failure. This is because the micron-sized PS particles undergo weak Brownian motion and can maintain their previous state for a long time after power failure. The proposal is not limited to such materials. By optimizing the quality of the materials, the microfluidic unit 81 can even achieve highly bistable properties that last for several days.

[0100] join Figure 7-10When a voltage is applied to the microfluidic unit 81, an electric field in a certain direction is generated, driving the colored particles to move in the water-in-oil droplets. Figure 7 The first state is transformed into Figure 8 The second state or Fig.10 The third state shows the characteristics of transmission or reflection, and see 2 and Figure 3 The light emitted from the sub-pixel P toward the first reflective unit 82 can be reflected by the first reflective unit 82, and then reflected onto the microfluidic unit 81, and reflected from the gap between the sub-pixels P through the microfluidic unit 81 or the second reflective unit 84, thereby interfering with the light of the front sub-pixel P with a large viewing angle, thereby realizing the anti-peeping mode.

[0101] See also Fig.11 When a voltage is applied to the microfluidic unit 81, the light emitted by the blue sub-pixel P is reflected by the first reflective unit 82 to the microfluidic unit 81 with blue particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the blue light to interfere with the large-viewing angle unilateral light emitted by the green sub-pixel P. The light emitted by the green sub-pixel P is reflected by the first reflective unit 82 to the microfluidic unit 81 with green particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the green light to interfere with the unilateral light emitted by the red sub-pixel P, and so on, thereby realizing the left-side anti-peeping function of the display panel.

[0102] See also Fig.12 When a voltage is applied to the microfluidic unit 81, the light emitted by the red sub-pixel P is reflected by the first reflecting unit 82 to the microfluidic unit 81 with red particles, and the microfluidic unit 81 or the second reflecting unit 84 reflects red light to interfere with the large-viewing angle unilateral light emitted by the green sub-pixel P. The light emitted by the green sub-pixel P is reflected by the first reflecting unit 82 to the microfluidic unit 81 with green particles, and the microfluidic unit 81 or the second reflecting unit 84 reflects green light to interfere with the unilateral light emitted by the blue sub-pixel P, and so on, thereby realizing the anti-peeping function on the right side of the display panel.

[0103] See also Fig.13 When a voltage is applied to the microfluidic unit 81, the light emitted by the red sub-pixel P is reflected by the first reflective unit 82 to the microfluidic unit 81 with red particles, and the microfluidic unit 81 or the second reflective unit 84 reflects red light to interfere with the wide-angle right light emitted by the green sub-pixel P. At the same time, the light emitted by the blue sub-pixel P is reflected by the first reflective unit 82 to the microfluidic unit 81 with blue particles, and the microfluidic unit 81 or the second reflective unit 84 reflects blue light to interfere with the wide-angle left light emitted by the green sub-pixel P, thereby realizing the double-sided anti-peeping function of the display panel.

[0104] See also Fig.14When voltage is applied to the microfluidic unit 81, the light emitted by the blue sub-pixel P is transmitted to the microfluidic unit 81 with blue particles, the microfluidic unit 81 or the second reflective unit 84 reflects the blue light, and is further reflected by the second reflective unit 84, interfering with the large-viewing angle unilateral light emitted by the green sub-pixel P, the light emitted by the green sub-pixel P is transmitted to the microfluidic unit 81 with green particles, the microfluidic unit 81 or the second reflective unit 84 reflects the green light, and is further reflected by the second reflective unit 84, interfering with the unilateral light emitted by the red sub-pixel P, and so on, thereby realizing the left-side anti-peeping function of the display panel.

[0105] See also Fig.15 When voltage is applied to the microfluidic unit 81, the light emitted by the red sub-pixel P is transmitted to the microfluidic unit 81 with red particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the red light and is further reflected by the second reflective unit 84, interfering with the large-viewing angle unilateral light emitted by the green sub-pixel P. The light emitted by the green sub-pixel P is transmitted to the microfluidic unit 81 with green particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the green light, interfering with the unilateral light emitted by the blue sub-pixel P, and so on, thereby realizing the anti-peeping function on the right side of the display panel.

[0106] See also Fig.16 When voltage is applied to the microfluidic unit 81, the light emitted by the red sub-pixel P is transmitted to the microfluidic unit 81 with red particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the red light, which is further reflected by the second reflective unit 84, interfering with the wide-angle right light emitted by the green sub-pixel P. At the same time, the light emitted by the blue sub-pixel P is transmitted to the microfluidic unit 81 with blue particles, and the microfluidic unit 81 or the second reflective unit 84 reflects the blue light, which is further reflected by the second reflective unit 84, interfering with the wide-angle left light emitted by the green sub-pixel P, thereby realizing the double-sided anti-peeping function of the display panel.

[0107] When no voltage is applied to the microfluidic unit 81, the colored particles are deposited at the bottom of the droplet 811, and the droplet 811 appears in a black state, and no reflection or transmission characteristics occur, thereby realizing a sharing mode.

[0108] Specifically, the display panel provided by the present application has the following beneficial effects: 1. By setting up an anti-peeping unit 80, the reflection and transmission of light are adjusted, the utilization rate of light is improved, the single-sided / double-sided anti-peeping and sharing functions of the display panel are realized, and the performance of the product is improved; 2. There is no need to increase anti-peeping pixels, which effectively saves product power consumption; 3. The microfluidic unit 81 in the anti-peeping unit 80 can utilize the bistable display characteristics to extend the anti-peeping time after the microfluidic unit 81 is powered off, effectively saving product power consumption; 4. By applying voltages in opposite directions, opposite electric fields are generated to achieve rapid switching between the first state and the second state or the second state, thereby achieving rapid switching of the anti-peeping mode and the sharing mode of the display panel.

[0109] See also Fig.17 , Fig.17 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0110] Specifically, the present application also provides a display device 1000, which can be applied to mobile phones, computers, notebooks, smart wearable devices and the like. Specifically, the display device 1000 includes a display panel 100 and a housing 200, wherein the display panel 100 can be the display panel provided by any of the above embodiments, and the housing 200 has a receiving cavity, and the display panel 100 is disposed in the receiving cavity.

[0111] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, comprising a substrate, a driving circuit layer, an anode layer, a pixel definition layer, a common electrode layer and a packaging layer stacked in sequence, characterized in that: The display panel is divided into a normal display area and an anti-peeping area, wherein the anti-peeping area is located between adjacent normal display areas, and the display panel further includes: a light-emitting layer, located in the pixel definition layer and comprising a plurality of sub-pixels arranged in the normal display area; A plurality of anti-peeping units are arranged corresponding to the anti-peeping areas, each of the anti-peeping units includes a microfluidic unit, a first light reflecting unit and a light shielding unit; Wherein, the microfluidic unit includes a droplet, and the droplet contains a charged substance. When a voltage is applied to the microfluidic unit, the charged substance can move in the droplet according to the dielectrophoretic force, and can reflect and / or scatter the light entering the droplet to form a first outgoing light; the first light reflecting unit is used to guide the light emitted by the sub-pixel to the microfluidic unit, or to guide the first outgoing light to the light-emitting side of the display panel; the shading unit is used to shield part of the first outgoing light emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first outgoing light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel; Wherein, the microfluidic unit further comprises: A first electrode and a second electrode are arranged opposite to each other along a direction from the substrate toward the encapsulation layer; The hydrophobic layer comprises a receiving cavity, and a side of the receiving cavity close to the first light reflecting unit has an opening; A transparent encapsulation layer, sealing the opening; The droplets are water-in-oil droplets or scattering particle droplets, and under the condition that there is a voltage difference between the first electrode and the second electrode, at least part of the charged material in the droplets moves from a side close to the bottom of the accommodating cavity toward a side of the transparent encapsulation layer, so that the display panel is switched from a sharing mode to an anti-peeping mode.

2. The display panel according to claim 1, characterized in that: In each of the privacy protection units, the first light reflecting unit is located on a side of the microfluidic unit away from the substrate, the light shielding unit is located on a side of the first light reflecting unit away from the microfluidic unit, and a projection of the microfluidic unit in the normal viewing direction of the display panel is completely within a projection of the light shielding unit in the normal viewing direction of the display panel; Among them, the first reflecting unit is used to guide the light emitted by the sub-pixel to the microfluidic unit, and under the condition of applying voltage to the microfluidic unit, the microfluidic unit is used to convert the light transmitted to the microfluidic unit by the first reflecting unit into the first output light, and the shading unit is used to block part of the first output light emitted in the normal viewing direction of the display panel, and the emission direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

3. The display panel according to claim 2, characterized in that: In each of the privacy protection units, the microfluidic unit is arranged in the pixel definition layer, the first light reflecting unit is arranged on the surface of the packaging layer away from the common electrode layer, and the light shielding unit is arranged on the surface of the first light reflecting unit away from the packaging layer.

4. The display panel according to claim 1, characterized in that: In each of the privacy protection units, the microfluidic unit is located on a side of the first light reflecting unit away from the substrate, the light shielding unit is located on a side of the microfluidic unit away from the first light reflecting unit, and a projection of the first light reflecting unit in the normal viewing direction of the display panel is completely within a projection of the light shielding unit in the normal viewing direction of the display panel; Wherein, under the condition of applying voltage to the microfluidic unit, the microfluidic unit is used to convert the light transmitted from the sub-pixel to the microfluidic unit into the first output light; the first reflecting unit is used to guide the first output light to the light output side of the display panel; the shading unit is used to block part of the first output light emitted in the normal viewing direction of the display panel, and the output direction of another part of the first output light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

5. The display panel according to claim 4, characterized in that: In each of the privacy protection units, the first reflective unit is arranged in the pixel definition layer, the microfluidic unit is arranged on the surface of the packaging layer away from the common electrode layer, and the shading unit is arranged on the surface of the microfluidic unit away from the packaging layer.

6. The display panel according to any one of claims 2 to 5, characterized in that: The display panel has a first side and a second side opposite to each other; and the display panel has an anti-peeping mode and a sharing mode; Among them, the anti-peeping mode includes a first-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side of the display panel, a second-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the second side of the display panel, and a double-side anti-peeping mode that interferes with the image viewed at an oblique viewing angle on the first side and the second side of the display panel.

7. The display panel according to claim 6, characterized in that: Each of the microfluidic units is located between sub-pixels of different colors, and the charged substance in the microfluidic unit close to the first side of the sub-pixel includes colored particles of the same color as the sub-pixel; Wherein, under the condition of applying voltage to the microfluidic unit, the microfluidic unit forms the first output light that is emitted in the oblique viewing direction toward the first side to interfere with the picture viewed at the oblique viewing direction of the first side of the display panel to form the first side anti-peeping mode.

8. The display panel according to claim 6, characterized in that: Each of the microfluidic units is located between sub-pixels of different colors, and the charged substance in the microfluidic unit close to the second side of the sub-pixel includes colored particles of the same color as the sub-pixel; Wherein, under the condition of applying voltage to the microfluidic unit, the microfluidic unit forms the first output light that is emitted in the oblique viewing direction toward the second side to interfere with the picture viewed at the oblique viewing direction of the second side of the display panel to form the second side anti-peep mode.

9. The display panel according to claim 6, characterized in that: The plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel located at a first side of the first color sub-pixel, and a third color sub-pixel located at a second side of the first color sub-pixel, and a first microfluidic unit and a first light shielding unit are provided between the first color sub-pixel and the second color sub-pixel, the charged substance in the first microfluidic unit includes color particles of a second color, a second microfluidic unit and a second light shielding unit are provided between the first color sub-pixel and the third color sub-pixel, and the charged substance in the second microfluidic unit includes color particles of a third color; Wherein, under the condition of applying voltage to the first microfluidic unit and the second microfluidic unit, the first microfluidic unit forms the first output light having a second color emitted in an oblique viewing direction toward the second side to interfere with the picture viewed at the oblique viewing direction of the first side of the display panel; and the second microfluidic unit forms the first output light having a third color emitted in an oblique viewing direction toward the first side to interfere with the picture viewed at the oblique viewing direction of the second side of the display panel to form the double-sided anti-peep mode.

10. The display panel according to claim 1, characterized in that: The anti-peeping unit also includes: A second light-reflecting unit is arranged on the side of the liquid droplet away from the first light-reflecting unit, and the second light-reflecting unit is used to guide the light transmitted through the liquid droplet to the light-emitting side of the display panel to form a second emitted light; the light-shielding unit is used to shield part of the second emitted light emitted in the normal viewing direction of the display panel, and the emission direction of another part of the second emitted light corresponds to the oblique viewing direction of the display panel, so as to interfere with the picture viewed in the oblique viewing direction of the display panel.

11. The display panel according to claim 1, characterized in that: Under the condition that no voltage is applied to the first electrode and the second electrode, the charged substance in the droplet is located at the bottom of the accommodating cavity, and the color of the droplet and the color of the charged substance interfere with each other to make the whole droplet appear black.

12. A display device, characterized in that: include: A shell having a receiving cavity; A display panel is disposed in the receiving cavity, and the display panel is the display panel according to any one of claims 1-11.

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