Display panel and display device

Abstract

The utility model provides a display panel and a display device. The display panel is provided with a plurality of display areas and a plurality of spacing structures arranged among the display areas. The display panel comprises a substrate, a driving substrate, a pixel layer and a shading layer. Wherein the pixel layer comprises a light-emitting layer and a reflecting layer; wherein the light-emitting layer is arranged in the display area; the light-emitting layer can emit light with a preset color under the irradiation of external light; wherein the preset color is one of red, green and blue; the reflecting layer is arranged between the light-emitting layer and the driving substrate and used for reflecting light emitted by the light-emitting layer. The shading layer is arranged on the pixel layer; the light shielding layer is provided with a plurality of containing cavities, and each containing cavity is internally provided with a light shielding liquid drop capable of absorbing light. The shading liquid drops are at least partially arranged in the spacing structures. Wherein the shading liquid drops are configured to be capable of diffusing to the display area under the control of applied voltage and covering at least part of the light-emitting layer. The display panel can realize multi-gray-scale color picture display.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the progress of technology, the forms of display devices are also changing with each passing day. Among them, the reflective display device is a display technology that uses external ambient light as a light source to illuminate the screen. This display method is opposite to the traditional transmissive display (such as LCD, OLED, etc., which rely on built-in backlights to illuminate the screen). It mainly relies on the reflection of ambient light rather than generating light by itself; it has the advantages of low power consumption, visual comfort, wide viewing angle, etc., and is widely used in fields such as e-readers and outdoor display devices.

[0003] However, currently, the mainstream reflective display devices can only display black and white images, and it is difficult to achieve color display. Summary of the Utility Model

[0004] A display panel and a display device provided by this application aim to solve the problem that it is difficult to achieve color display in existing reflective display devices.

[0005] To solve the above technical problems, a technical solution adopted by this application is: to provide a display panel, which has a plurality of display areas and a plurality of spacer structures arranged between the display areas; including:

[0006] A substrate;

[0007] A driving substrate, arranged on one side surface of the substrate;

[0008] A pixel layer, arranged on the driving substrate; the pixel layer includes:

[0009] A light-emitting layer, arranged in the display area; the light-emitting layer can emit light of a preset color under the irradiation of external light; the preset color is one of red, green, and blue;

[0010] A reflective layer, arranged between the light-emitting layer and the driving substrate, for reflecting the light emitted by the light-emitting layer;

[0011] A light-shielding layer, arranged on the pixel layer; the light-shielding layer has a plurality of accommodation cavities, and each accommodation cavity is provided with a light-shielding droplet capable of absorbing light; at least part of the light-shielding droplets are arranged in the spacer structure;

[0012] Among them, the light-shielding droplets are configured to be able to diffuse to the display area and cover at least part of the light-emitting layer under the control of an applied voltage.

[0013] In a specific embodiment, the pixel layer further includes:

[0014] A hydrophobic layer is disposed on the light-emitting layer and is electrically connected to the driving substrate; the surface of the hydrophobic layer is configured to be able to change its hydrophilic property under voltage control;

[0015] A hydrophilic layer is disposed within the spacer structure, and the surface of the hydrophilic layer on the side away from the driving substrate is flush with the surface of the hydrophobic layer on the side away from the driving substrate;

[0016] Wherein, the light-shielding droplets cover the surface of the hydrophilic layer and at least partially cover the surface of the hydrophobic layer.

[0017] In a specific embodiment, the surface of the hydrophobic layer is configured to be able to change from a hydrophobic property to a hydrophilic property under an applied voltage; and the higher the applied voltage, the stronger the hydrophilic property of the surface;

[0018] The light-shielding droplets are configured to be able to diffuse from the surface of the hydrophilic layer to the surface of the hydrophobic layer after a voltage is applied to the hydrophobic layer; and as the applied voltage increases, the projected area of the light-shielding droplets on the light-emitting layer in the stacking direction of the display panel gradually increases.

[0019] In a specific embodiment, the light-emitting layer includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer; the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer are arranged in a two-dimensional array within the pixel layer;

[0020] Wherein, the light emitted by the first light-emitting layer is red light; the light emitted by the second light-emitting layer is green light; and the light emitted by the third light-emitting layer is blue light.

[0021] In a specific embodiment, the light-shielding layer further includes:

[0022] A plurality of black matrices are disposed within the spacer structure and are abutted against the side of the light-shielding droplets away from the light-emitting layer in a first direction; an accommodation cavity is formed by enclosing two adjacent black matrices; wherein, the first direction is perpendicular to the stacking direction.

[0023] In a specific embodiment, it further includes:

[0024] A cover plate is disposed on the light-shielding layer; and along the stacking direction, one end of the black matrix abuts against the pixel layer, and the other end abuts against the cover plate; the cover plate, the pixel layer, and the plurality of black matrices enclose to form a plurality of accommodation cavities.

[0025] In a specific embodiment, the pixel layer further includes:

[0026] A pixel definition layer is disposed between two adjacent light-emitting layers to space the pixel layer to form a plurality of sub-pixels; and each sub-pixel includes the light-emitting layer, the reflective layer, and the hydrophobic layer.

[0027] The hydrophilic layer and the black matrix of the light-shielding layer are disposed on the pixel definition layer; and the pixel definition layer separates the hydrophilic layer from the hydrophobic layer.

[0028] In a specific embodiment, the pixel layer further includes:

[0029] A plurality of diffusion particles are disposed on the light-emitting path of the light-emitting layer; the diffusion particles are used to diffuse the light emitted by the light-emitting layer.

[0030] In a specific embodiment, the light-emitting layer is a quantum dot light-emitting layer.

[0031] To solve the above technical problems, another technical solution adopted by this application is: to provide a display device including a display panel as described in any one of the above.

[0032] The beneficial effects of the embodiments of this application: Different from the prior art, the embodiments of this application provide a display panel having a plurality of display areas and a plurality of spacer structures disposed between the display areas; the display panel includes a substrate, a driving substrate, a pixel layer, and a light-shielding layer. Among them, the driving substrate is disposed on one side surface of the substrate; the pixel layer is disposed on the driving substrate, and the pixel layer includes a light-emitting layer and a reflective layer; wherein, the light-emitting layer is disposed in the display area; the light-emitting layer can emit light of a preset color under the irradiation of external light; wherein, the preset color is one of red, green, and blue; the reflective layer is disposed between the light-emitting layer and the driving substrate and is used to reflect the light emitted by the light-emitting layer. The light-shielding layer is disposed on the pixel layer; the light-shielding layer has a plurality of receiving cavities, and a light-shielding droplet capable of absorbing light is disposed in each receiving cavity; at least part of the light-shielding droplet is disposed in the spacer structure. Among them, the light-shielding droplet is configured to be able to diffuse to the display area and cover at least part of the light-emitting layer under voltage control. By providing a light-emitting layer with photoluminescence characteristics, the display panel can emit colored light under the irradiation of external light; and a reflective layer is disposed below the light-emitting layer to reflect the colored light emitted by the light-emitting layer from the light-emitting side to the outside. In addition, by providing light-shielding droplets on the pixel layer to absorb external light and reduce the light-emitting brightness of the light-emitting layer; and by controlling the area of the light-shielding droplet covering the light-emitting layer through voltage, the light-emitting brightness of each light-emitting layer is controlled, realizing multi-gray-scale color picture display. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of this application;

[0034] Figure 2For Figure 1 The structural schematic diagram of the display panel shown in a working state;

[0035] Figure 3 The structural schematic diagram of the display panel provided by the second embodiment of the present application;

[0036] Figure 4 The process schematic diagram of the manufacturing method of the display panel provided by an embodiment of the present application;

[0037] Figure 5 For Figure 4 The structural schematic diagram of step S1 shown;

[0038] Figure 6 For Figure 4 The structural schematic diagram of step S2 shown;

[0039] Figure 7 For Figure 4 The structural schematic diagram of step S3 shown;

[0040] Figure 8 The structural schematic diagram of step S31;

[0041] Figure 9 The structural schematic diagram of step S32;

[0042] Figure 10 The structural schematic diagram of the display device provided by an embodiment of the present application.

[0043] Explanation of the reference numerals in the drawings:

[0044] 100 - Display panel; 110 - Display area; 120 - Spacing structure; 1 - Substrate; 2 - Driving substrate; 3 - Pixel layer; 4 - Light-shielding layer; 5 - Cover plate; 30 - Sub-pixel; 31 - Light-emitting layer; 32 - Reflective layer; 33 - Hydrophobic layer; 34 - Hydrophilic layer; 35 - Pixel definition layer; 36 - Diffusion particles; 40 - Accommodating cavity; 41 - Light-shielding droplets; 42 - Black matrix; 311 - First light-emitting layer; 312 - Second light-emitting layer; 313 - Third light-emitting layer. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0046] The terms "first", "second", and "third" in this application are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0047] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] The following provides a detailed description of this application in conjunction with the drawings and embodiments.

[0049] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of a display panel provided by an embodiment of this application; this application provides a display panel, and this display panel can be applied to a reflective display device. The display panel has a plurality of display areas 110 and a plurality of spacer structures 120 disposed between the display areas 110; wherein, the display areas 110 are used to arrange sub-pixels 30, and the spacer structures 120 are used to separate sub-pixels 30 of different colors to avoid the problem of pixel crosstalk. Specifically, the display panel may include a substrate 1, a driving substrate 2, a pixel layer 3, and a light-shielding layer 4.

[0050] Among them, the substrate 1 is used to carry other structural components of the display panel; specifically, the substrate 1 may be a glass substrate 1. The driving substrate 2 is disposed on one side surface of the substrate 1, and the pixel layer 3 is disposed on the side surface of the driving substrate 2 away from the substrate 1; the driving substrate 2 may include a driving circuit layer for providing electrical connection for the pixel layer 3.

[0051] The pixel layer 3 may include a light-emitting layer 31 and a reflective layer 32 which are stacked. Among them, the light-emitting layer 31 is disposed on the part of the pixel layer 3 within the display area 110 and is used to emit light of different colors to form a display image. Specifically, the light-emitting layer 31 has a photoluminescence property and can emit light of a preset color under the irradiation of external light; among them, the preset color can be one of red, green, and blue. The pixel layer 3 has a plurality of light-emitting layers 31, and the plurality of light-emitting layers 31 are arranged in a two-dimensional array on a plane perpendicular to the stacking direction Z. The reflective layer 32 is disposed between the light-emitting layer 31 and the driving substrate 2 and is used to reflect the light emitted by the light-emitting layer 31 to enhance the light-emitting intensity on the light-emitting side. In addition, the reflective layer 32 can also reflect the external light transmitted through the light-emitting layer 31 back to the light-emitting layer 31 again, thereby further enhancing the light-emitting brightness of the light-emitting layer 31.

[0052] The light-shielding layer 4 is disposed on the pixel layer 3, and the light-shielding layer 4 has a plurality of accommodation cavities 40, and the plurality of accommodation cavities 40 correspond to the plurality of light-emitting layers 31 one by one; specifically, each display area 110, an adjacent spacer structure 120, and an accommodation cavity 40 are correspondingly arranged, and the pixel layer 3 forms the bottom wall of the accommodation cavity 40. A light-shielding droplet 41 capable of absorbing light is disposed in each accommodation cavity 40; specifically, the light-shielding droplet 41 is at least partially disposed in the spacer structure 120 and covers the surface of the pixel layer 3 located in the spacer structure 120, and the remaining part of the light-shielding droplet 41 contacts the surface of the pixel layer 3 located in the display area 110. Among them, the light-shielding droplet 41 can be a black electrolyte solution.

[0053] Among them, the light-shielding droplet 41 is configured to be able to diffuse to the display area 110 and cover at least part of the light-emitting layer 31 under voltage control to absorb the external light irradiated onto the light-shielding droplet 41 and reduce the external light that can irradiate the light-emitting layer 31; thereby reducing the light-emitting brightness of the light-emitting layer 31. Specifically, the diffusion degree of the light-shielding droplet 41 in the display area 110 changes with the applied voltage; that is, the coverage area of the light-shielding droplet 41 on the light-emitting layer 31 increases or decreases with the change of the applied voltage.

[0054] By providing the light-emitting layer 31 with a photoluminescence property, the display panel can emit colored light under the irradiation of external light; and a reflective layer 32 is provided below the light-emitting layer 31 to reflect the colored light emitted by the light-emitting layer 31 from the light-emitting side to the outside. In addition, by providing the light-shielding droplet 41 on the pixel layer 3 to absorb external light and reduce the light-emitting brightness of the light-emitting layer 31; and by controlling the area of the light-shielding droplet 41 covering the light-emitting layer 31 through voltage, the light-emitting brightness of each light-emitting layer 31 is controlled, and a multi-gray-scale color display image is realized.

[0055] Such as Figure 1As shown, in a specific embodiment, the pixel layer 3 may further include a hydrophobic layer 33 and a hydrophilic layer 34. Among them, the hydrophilic layer 34 is disposed within the spacer structure 120, and the surface of the hydrophilic layer 34 away from the driving substrate 2 is exposed in the accommodating cavity 40, and the light-shielding droplets 41 are disposed on the surface of the hydrophilic layer 34.

[0056] The hydrophobic layer 33 is disposed on the light-emitting layer 31 and is electrically connected to the driving substrate 2; that is to say, the hydrophobic layer 33 is disposed within the display area 110. The surface of the hydrophobic layer 33 away from the light-emitting layer 31 is exposed in the accommodating cavity 40, and the light-shielding droplets 41 can contact the surface of the hydrophobic layer 33; the surface of the hydrophobic layer 33 is configured to be able to change its hydrophilic property under voltage control, so that the light-shielding droplets 41 can spread on the surface of the hydrophobic layer 33. Specifically, the hydrophobic layer 33 is disposed on the surface of the light-emitting layer 31 away from the reflective layer 32 and completely covers the surface of the light-emitting layer 31 to prevent liquid or water vapor from entering the light-emitting layer 31, causing corrosion or failure of the light-emitting layer 31.

[0057] Among them, the surface of the hydrophilic layer 34 away from the driving substrate 2 is flush with the surface of the hydrophobic layer 33 away from the driving substrate 2, so that the light-shielding droplets 41 can spread from the surface of the hydrophilic layer 34 to the surface of the hydrophobic layer 33. The light-shielding droplets 41 cover the surface of the hydrophilic layer 34 and cover at least part of the surface of the hydrophobic layer 33, so that the light-shielding droplets 41 can be electrically connected to the driving circuit board through the hydrophobic layer 33. It should be noted that in the initial state without voltage applied, only a small part of the liquid near the edge of the light-shielding droplets 41 contacts the surface of the hydrophobic layer 33; in this case, the absorption of the light-shielding droplets 41 to the external light irradiating the display area 110 can be ignored, and the light-shielding droplets 41 can be approximately regarded as only aggregating on the surface of the hydrophilic layer 34.

[0058] Specifically, the surface of the hydrophobic layer 33 is configured to be able to change from hydrophobic property to hydrophilic property under applied voltage, so that the light-shielding droplets 41 can spread on the surface of the hydrophobic layer 33 under applied voltage. Further, the higher the voltage value applied by the driving circuit board to the hydrophobic layer 33, the stronger the hydrophilic property of the surface of the hydrophobic layer 33, and the greater the degree of spread of the light-shielding droplets 41 on the surface of the hydrophobic layer 33.

[0059] Those skilled in the art can understand that when the driving circuit board does not apply voltage to the hydrophobic layer 33, the light-shielding droplets 41 can aggregate on the surface of the hydrophilic layer 34 located within the spacer structure 120. When the driving circuit board applies voltage to the hydrophobic layer 33, the electric field will attract the charged ions inside the light-shielding droplets 41, causing the charge distribution near the surface of the droplets to change, thereby affecting the interaction force between the light-shielding droplets 41 and the surface of the pixel layer 3 and changing the contact angle between the light-shielding droplets 41 and the surface of the hydrophobic layer 33. That is, by changing the wettability of the light-shielding droplets 41 on the surface of the hydrophobic layer 33, the coverage area of the light-shielding droplets 41 on the surface of the hydrophobic layer 33 is changed.

[0060] Refer to Figure 2 , Figure 2 is Figure 1 a schematic structural diagram of the display panel in a working state. In a specific embodiment, the light-shielding droplets 41 are configured to be able to diffuse from the surface of the hydrophilic layer 34 to the surface of the hydrophobic layer 33 after a voltage is applied to the hydrophobic layer 33; and as the applied voltage increases, the projected area of the light-shielding droplets 41 on the light-emitting layer 31 in the stacking direction of the display panel gradually increases. That is to say, the stronger the applied voltage, the larger the coverage area of the light-shielding droplets 41 on the hydrophobic layer 33.

[0061] In this way, by controlling the coverage area of the light-shielding droplets 41 on the hydrophobic layer 33, the amount of external light that can successfully irradiate the light-emitting layer 31 is controlled, thereby controlling the brightness of the self-luminescence of the light-emitting layer 31 and realizing the multi-gray-scale display of the light-emitting layer 31. In addition, this control method also has the characteristic of fast response speed.

[0062] Specifically, as Figure 2 shown, when the driving circuit layer applies a voltage to the hydrophobic layer 33, the light-shielding droplets 41 gather on the hydrophilic layer 34 within the spacer structure 120 under the action of the liquid surface tension, so as to expose the light-emitting layer 31 in the display area 110 to the irradiation of external light, making the light-emitting brightness of the light-emitting layer 31 reach the highest.

[0063] When the driving circuit layer applies a low voltage to the hydrophobic layer 33, the light-shielding droplets 41 diffuse from the surface of the hydrophilic layer 34 to the surface of the hydrophobic layer 33 to cover and only cover a part of the surface of the hydrophobic layer 33 close to the hydrophilic layer 34, so that the external light originally irradiating the covered part of the light-emitting layer 31 is absorbed by the light-shielding droplets 41; and the remaining uncovered part of the light-emitting layer 31 is exposed to the irradiation of external light, making the light-emitting brightness of the light-emitting layer 31 decrease. And as the applied voltage increases, the diffusion degree of the light-shielding droplets 41 increases, the coverage area of the light-shielding droplets 41 on the hydrophobic layer 33 increases, and the external light irradiating the light-emitting layer 31 decreases, making the light-emitting brightness of the light-emitting layer 31 decrease.

[0064] When the voltage applied by the driving circuit layer to the hydrophobic layer 33 increases to a preset value, the light-shielding droplets 41 diffuse to completely cover the surface of the hydrophobic layer 33, and the external light irradiating the light-emitting layer 31 is completely absorbed by the light-shielding droplets 41, making the light-emitting brightness of the light-emitting layer 31 the lowest or not emitting light.

[0065] Such as Figure 2 shown, the pixel layer 3 may further include a pixel definition layer 35, which is disposed between two adjacent light-emitting layers 31 to space the pixel layer 3 to form a plurality of sub-pixels 30, avoiding the problem of pixel crosstalk between different-color light-emitting layers 31 during the process of evaporating and depositing the light-emitting layer 31 material.

[0066] Specifically, in the display panel, the part corresponding to the pixel definition layer 35 is the spacer structure 120, and the part corresponding to the light-emitting layer 31 is the display area 110. The hydrophilic layer 34 is disposed on the pixel definition layer 35 and is spaced apart from the hydrophobic layer 33; the pixel definition layer 35 separates the hydrophilic layer 34 from the hydrophobic layer 33 to insulate the hydrophilic layer 34 from the hydrophobic layer 33, so as to avoid adverse effects on the hydrophilic property of the surface of the hydrophilic layer 34 when a voltage is applied to the hydrophobic layer 33 by the driving circuit layer.

[0067] In a specific embodiment, each sub-pixel 30 may include a light-emitting layer 31, a reflective layer 32, and a hydrophobic layer 33. Among them, the light-emitting layer 31 may be a quantum dot light-emitting layer 31; when the quantum dot material in the light-emitting layer 31 is excited by light, the internal electrons thereof transition from the valence band to the conduction band, and the electrons on the conduction band then de-excite back to the valence band, and specific wavelength light is emitted during this process, that is, different colors of light are emitted. Among them, different colors of light can be emitted from the light-emitting layer 31 by precisely controlling the size of the quantum dot material. In addition, the quantum dot light-emitting layer 31 also has the characteristics of high brightness and high color gamut.

[0068] Specifically, the light-emitting layer 31 may include a first light-emitting layer 311, a second light-emitting layer 312, and a third light-emitting layer 313; among them, the light emitted by the first light-emitting layer 311 may be red light; the light emitted by the second light-emitting layer 312 may be green light; the light emitted by the third light-emitting layer 313 may be blue light.

[0069] The first light-emitting layer 311, the second light-emitting layer 312, and the third light-emitting layer 313 are arranged in a two-dimensional array in the pixel layer 3, and the light-emitting layers 31 of different colors are spaced apart from each other, and the adjacent first light-emitting layer 311, second light-emitting layer 312, and third light-emitting layer 313 form a pixel unit. It can be understood that by respectively controlling the coverage areas of the plurality of light-shielding droplets 41 in each pixel unit on the first light-emitting layer 311, the second light-emitting layer 312, and the third light-emitting layer 313, different brightnesses of light are emitted from the first light-emitting layer 311, the second light-emitting layer 312, and the third light-emitting layer 313, so that the different brightnesses of red light, green light, and blue light emitted by each pixel unit are mixed to form light of a preset color, so that a plurality of pixel units form a preset display screen.

[0070] Continue to refer to Figure 1, the light-shielding layer 4 may further include a plurality of black matrices 42 disposed within the spacer structure 120, which are configured to absorb part of the light emitted by the light-emitting layer 31, prevent light leakage between adjacent sub-pixels 30, and thus improve color purity and contrast. Specifically, the black matrices 42 are disposed on a partial surface of the pixel defining layer 35 that is not covered by the hydrophilic layer 34; and along a first direction X perpendicular to the stacking direction Z, two adjacent black matrices 42 enclose a receiving cavity 40 to receive the light-shielding droplets 41 and define the diffusion range of the light-shielding droplets 41. Wherein, along the first direction X, one side of the black matrix 42 abuts against one side of the light-shielding droplet 41 away from the light-emitting layer 31, and the other side abuts against the edge of the adjacent sub-pixel 30.

[0071] In a specific embodiment, the display panel may further include a cover plate 5 for protecting other film layers of the display panel and preventing the internal structure of the display panel from being corroded or mechanically damaged by the external environment. Specifically, the cover plate 5 is disposed on a side of the light-shielding layer 4 away from the pixel layer 3; and along the stacking direction Z, one end of the black matrix 42 abuts against the pixel layer 3, and the other end abuts against the cover plate 5, so that the cover plate 5, the pixel layer 3 and the plurality of black matrices 42 enclose a plurality of receiving cavities 40 to prevent the light-shielding droplets 41 in each receiving cavity 40 from leaking into other receiving cavities 40 and affecting the control of the light-emitting brightness of the corresponding sub-pixels 30.

[0072] Refer to Figure 3 , Figure 3 is a schematic structural diagram of the display panel provided by the second embodiment of the present application. The structure of the display panel provided by the second embodiment of the present application is similar to the structure of the display panel provided by the first embodiment of the present application. The difference is that, in the second embodiment, the pixel layer 3 may further include a plurality of diffusion particles 36 disposed on the light-emitting path of the light-emitting layer 31, which are configured to diffuse the light emitted by the light-emitting layer 31, so as to make the display screen more uniform and the viewing angle wider.

[0073] Specifically, the diffusion particles 36 may be disposed within the pixel layer 3. For example, the diffusion particles 36 may be uniformly dispersed in the hydrophobic layer 33; the diffusion particles 36 may be transparent spherical particles, so that the diffusion effect of the diffusion particles 36 on light is more uniform. Of course, in some embodiments, the diffusion particles 36 may also be uniformly dispersed in the light-emitting layer 31.

[0074] In some other embodiments, a diffusion layer having diffusion particles 36 may be separately provided in the display panel, as long as it is ensured that the diffusion particles 36 are located on the light-emitting path of the light-emitting layer 31.

[0075] An embodiment of the present application provides a display panel, which has a plurality of display areas 110 and a plurality of spacer structures 120 disposed between the display areas 110; the display panel includes a substrate 1, a driving substrate 2, a pixel layer 3, and a light-shielding layer 4. Among them, the driving substrate 2 is disposed on one side surface of the substrate 1; the pixel layer 3 is disposed on the driving substrate 2, and the pixel layer 3 includes a light-emitting layer 31 and a reflective layer 32; among them, the light-emitting layer 31 is disposed within the display area 110; the light-emitting layer 31 can emit light of a preset color under the irradiation of external light; among them, the preset color is one of red, green, and blue; the reflective layer 32 is disposed between the light-emitting layer 31 and the driving substrate 2 for reflecting the light emitted by the light-emitting layer 31. The light-shielding layer 4 is disposed on the pixel layer 3; the light-shielding layer 4 has a plurality of receiving cavities 40, and a light-shielding droplet 41 capable of absorbing light is disposed in each receiving cavity 40; at least a part of the light-shielding droplet 41 is disposed within the spacer structure 120. Among them, the light-shielding droplet 41 is configured to be able to diffuse into the display area 110 and cover at least a part of the light-emitting layer 31 under voltage control. By providing the light-emitting layer 31 with photoluminescent properties, the display panel can emit colored light under the irradiation of external light; and a reflective layer 32 is disposed below the light-emitting layer 31 to reflect the colored light emitted by the light-emitting layer 31 from the light-emitting side to the outside. In addition, by disposing the light-shielding droplet 41 on the pixel layer 3 to absorb external light and reduce the light-emitting brightness of the light-emitting layer 31; and by controlling the area of the light-shielding droplet 41 covering the light-emitting layer 31 through voltage, the light-emitting brightness of each light-emitting layer 31 is controlled, thereby realizing a multi-gray-scale color display screen.

[0076] Refer to Figures 4 - 9 , Figure 4 is a schematic flowchart of a method for manufacturing a display panel provided by an embodiment of the present application; Figure 5 is Figure 4 a schematic structural diagram of step S1 shown; Figure 6 is Figure 4 a schematic structural diagram of step S2 shown; Figure 7 is Figure 4 a schematic structural diagram of step S3 shown; Figure 8 is a schematic structural diagram of step S31; Figure 9 is a schematic structural diagram of step S32. As Figure 4 shown, the present application also provides a method for manufacturing a display panel for the display panel involved in any of the above embodiments; the manufacturing method specifically includes:

[0077] S1: Provide a substrate and a driving substrate.

[0078] Specifically, as Figure 5 shown, the substrate 1 can adopt a glass substrate, and the driving substrate 2 is disposed on one side surface of the substrate 1. Among them, the driving substrate 2 includes a driving circuit layer for providing electrical connection.

[0079] S2: Form a pixel layer on the driving substrate.

[0080] In a specific implementation process, step S2 may specifically include:

[0081] S21: Form a pixel definition layer on the driving substrate.

[0082] Specifically, as Figure 6 shown, deposit an insulating material on the surface of the driving substrate 2 away from the substrate 1 and pattern it to form a pixel definition layer 35. Among them, the area corresponding to the pixel definition layer 35 is a spacer structure 120; the pixel definition layer 35 defines and forms a pixel region, and the area corresponding to the pixel region is a display area 110.

[0083] S22: Sequentially deposit and form a reflective layer, a light-emitting layer, and a hydrophobic layer within the pixel region.

[0084] Specifically, first deposit a metal material with a high reflectivity by evaporation on the surface of the driving substrate 2 located within the display area 110 to form a reflective layer 32; then deposit a quantum dot material by evaporation on the surface of the reflective layer 32 away from the driving substrate 2 to form a light-emitting layer 31; finally, form a hydrophobic layer 33 on the surface of the light-emitting layer 31 away from the driving substrate 2, and electrically connect the hydrophobic layer 33 to the driving substrate 2. Among them, the sizes of the quantum dots in adjacent light-emitting layers 31 are different to emit light of different colors.

[0085] S23: Form a hydrophilic layer on the pixel definition layer 35.

[0086] Specifically, etch a part of the pixel definition layer 35 close to the hydrophobic layer 33 and then deposit and form a hydrophilic layer 34, and separate the hydrophilic layer 34 and the hydrophobic layer 33 with the pixel definition layer 35.

[0087] S3: Set a light-shielding layer on the pixel layer.

[0088] In a specific implementation process, step S3 specifically includes:

[0089] S31: Set a black matrix on the pixel definition layer 35.

[0090] Specifically, as Figure 8 shown, set a black matrix 42 on the surface of the pixel definition layer 35 along the first direction X away from the hydrophobic layer 33 and not covered by the hydrophilic layer 34, and make adjacent black matrices 42 enclose to form a receiving cavity 40. Among them, the edge of the projection of the black matrix 42 on the pixel layer 3 along the stacking direction Z is connected to the edge of the hydrophilic layer 34.

[0091] S32: Set light-shielding droplets on the hydrophilic layer.

[0092] Specifically, as Figure 9As shown, an electrolyte solution is disposed on the surface of the hydrophilic layer 34 to form a light-shielding droplet 41, and one side of the light-shielding droplet 41 along the first direction X abuts against the black matrix 42, and the edge portion of the other side covers a part of the hydrophobic layer 33.

[0093] S33: A cover plate is disposed on the light-shielding layer.

[0094] Specifically, as Figure 7 shown, a cover plate 5 is disposed on the side of the light-shielding layer 4 away from the pixel layer 3, and one end of the black matrix 42 along the stacking direction Z close to the driving substrate 2 abuts against the pixel defining layer 35, and the end away from the driving substrate 2 abuts against the cover plate 5, so that the cover plate 5, the black matrix 42 and the pixel layer 3 cooperate to enclose and form a receiving cavity 40.

[0095] Referring to Figure 10 , Figure 10 is a structural schematic diagram of a display device provided by an embodiment of the present application; an embodiment of the present application further provides a display device, which may be a reflective display device and can be applied to an e-reader or an outdoor display device. The display device includes the display panel 100 involved in any of the above embodiments, and the display device can realize multi-gray-scale color picture display.

[0096] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A display panel having a plurality of display regions and a plurality of spacer structures disposed between the display regions; characterized in that, Comprising: A substrate; A driving substrate disposed on one side surface of the substrate; A pixel layer disposed on the driving substrate; The pixel layer includes: A light-emitting layer disposed in the display area; the light-emitting layer is capable of emitting light of a preset color under the irradiation of external light; the preset color is one of red, green, and blue; A reflective layer disposed between the light-emitting layer and the driving substrate for reflecting the light emitted by the light-emitting layer; A light-shielding layer disposed on the pixel layer; the light-shielding layer has a plurality of receiving cavities, and a light-shielding droplet capable of absorbing light is disposed in each receiving cavity; at least part of the light-shielding droplet is disposed in the spacer structure; Wherein, the light-shielding droplet is configured to be able to diffuse to the display area and cover at least part of the light-emitting layer under the control of an applied voltage.

2. The display panel according to claim 1, wherein The pixel layer further includes: A hydrophobic layer disposed on the light-emitting layer and electrically connected to the driving substrate; the surface of the hydrophobic layer is configured to be able to change its hydrophilic property under voltage control; A hydrophilic layer disposed in the spacer structure, and the surface of the hydrophilic layer away from the driving substrate is flush with the surface of the hydrophobic layer away from the driving substrate; Wherein, the light-shielding droplet covers the surface of the hydrophilic layer and covers at least part of the surface of the hydrophobic layer.

3. The display panel according to claim 2, wherein The surface of the hydrophobic layer is configured to be able to change from a hydrophobic property to a hydrophilic property under an applied voltage; and the higher the applied voltage, the stronger the hydrophilic property of the surface; The light-shielding droplet is configured to be able to diffuse from the surface of the hydrophilic layer to the surface of the hydrophobic layer after applying a voltage to the hydrophobic layer; and as the applied voltage increases, the projected area of the light-shielding droplet on the light-emitting layer in the stacking direction of the display panel gradually increases.

4. The display panel according to claim 1, wherein The light-emitting layer includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer; the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer are arranged in a two-dimensional array in the pixel layer; Wherein, the light emitted by the first light-emitting layer is red light; the light emitted by the second light-emitting layer is green light; the light emitted by the third light-emitting layer is blue light.

5. The display panel according to claim 4, wherein The light-shielding layer further includes: A plurality of black matrices disposed in the spacer structure and abutting against one side of the light-shielding droplet away from the light-emitting layer in a first direction; an accommodating cavity is formed by enclosing two adjacent black matrices; wherein, the first direction is perpendicular to the stacking direction.

6. The display panel according to claim 5, wherein Further comprising: A cover plate disposed on the light-shielding layer; and along the stacking direction, one end of the black matrix abuts against the pixel layer, and the other end abuts against the cover plate; The cover plate, the pixel layer, and the plurality of black matrices enclose a plurality of accommodating cavities.

7. The display panel according to claim 2, wherein, The pixel layer further includes: A pixel definition layer disposed between two adjacent light-emitting layers to space the pixel layer into a plurality of sub-pixels; and each sub-pixel includes the light-emitting layer, the reflective layer, and the hydrophobic layer; The hydrophilic layer and the black matrix of the light-shielding layer are disposed on the pixel definition layer; and the pixel definition layer separates the hydrophilic layer from the hydrophobic layer.

8. The display panel according to claim 1, wherein The pixel layer further includes: A plurality of diffusing particles are disposed on the light-emitting path of the light-emitting layer; the diffusing particles are used for diffusing the light emitted by the light-emitting layer.

9. The display panel according to claim 1, wherein The light-emitting layer is a quantum dot light-emitting layer.

10. A display device, characterized in that, It includes a display panel according to any one of claims 1-9.

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