Display panel, driving method thereof and display device

Abstract

The application discloses a display panel, a driving method thereof and a display device, and relates to the technical field of display. The display panel comprises a color film substrate and an array substrate which are arranged in a cell, a liquid crystal light adjusting layer, a first electrode layer and a second electrode layer. The liquid crystal light adjusting layer is arranged between the color film substrate and the array substrate. The liquid crystal light adjusting layer comprises a plurality of ultraviolet light absorbing structures and first liquid crystal molecules filled between the plurality of ultraviolet light absorbing structures. The plurality of ultraviolet light absorbing structures are arranged in an array. The ultraviolet light absorbing structure is filled with second liquid crystal molecules and dichroic dye molecules. The first electrode layer is arranged on the side of the color film substrate close to the array substrate. The second electrode layer is arranged on the side of the array substrate close to the color film substrate. The display panel of the application blocks ultraviolet light in the light alignment process and ultraviolet light used for a long time, and prevents the ultraviolet light from directly irradiating the dichroic dye molecules and the second liquid crystal molecules.

Description

Technical Field

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

[0002] VA (Vertical Alignment) display mode has become the mainstream choice for high-end LCD products due to its advantages such as high contrast and wide viewing angle. Photoalignment, as the core alignment process of VA display mode, achieves precise vertical alignment of liquid crystal molecules through ultraviolet irradiation, significantly improving the uniformity of the display. However, in the photoalignment process of VA display devices, ultraviolet light in the 313nm to 405nm wavelength band is required. This ultraviolet light directly irradiates the dichroic dye molecules and liquid crystal molecules in the liquid crystal cell, causing the dichroic dye molecules to fade and the liquid crystal to photopolymerize, thus leading to contrast degradation and increased color shift, affecting the display effect. Therefore, it is urgent to design a display panel that prevents ultraviolet light from affecting the dichroic dye molecules and liquid crystal molecules. Summary of the Invention

[0003] The purpose of this application is to provide a display panel, its driving method, and a display device, which, by setting an ultraviolet light-absorbing structure, blocks the ultraviolet light during the photoalignment process and the ultraviolet light used over a long period of time, preventing ultraviolet light from directly irradiating dichroic dye molecules and the second liquid crystal molecules.

[0004] This application discloses a display panel, including a color filter substrate and an array substrate disposed opposite each other. The display panel further includes a liquid crystal dimming layer, a first electrode layer, and a second electrode layer. The liquid crystal dimming layer is disposed between the color filter substrate and the array substrate. The liquid crystal dimming layer includes a plurality of ultraviolet light-absorbing structures and first liquid crystal molecules filled between the plurality of ultraviolet light-absorbing structures. The plurality of ultraviolet light-absorbing structures are arranged in an array. The ultraviolet light-absorbing structures are filled with second liquid crystal molecules and dichroic dye molecules. The first electrode layer is disposed on the side of the color filter substrate near the array substrate. The second electrode layer is disposed on the side of the array substrate near the color filter substrate. The liquid crystal dimming layer includes a first state and a second state, and the first electrode layer and the second electrode layer control the liquid crystal dimming layer to switch between the first state and the second state.

[0005] Optionally, the ultraviolet light-absorbing structure is a capsule structure, which includes a polymer capsule wall that encapsulates a second liquid crystal molecule and a dichroic dye molecule. The ultraviolet light-absorbing structure accounts for 45% to 60% of the mass fraction of the liquid crystal dimming layer.

[0006] Optionally, the second liquid crystal molecule is vertically oriented, the pretilt angle of the second liquid crystal molecule is 87° to 90°, and the viscosity is less than or equal to 20 mPa·s.

[0007] Optionally, the dichroic dye molecule is selected from anthraquinone or azo dye molecules with high extinction coefficients.

[0008] Optionally, the thickness of the polymer capsule wall is between 150 nanometers and 300 nanometers, and the polymer capsule wall is made of one of polysiloxane, polyimide, or PMMA composite polymer with added ZnO-TiO2 composite nanoparticles.

[0009] Optionally, the ultraviolet light-absorbing structure is circular, and the particle size of the ultraviolet light-absorbing structure is between 2.5 micrometers and 5 micrometers.

[0010] Optionally, in the first state, the long axis of the second liquid crystal molecule and the absorption axis of the dichroic dye molecule are perpendicular to the light-emitting surface of the display panel; in the second state, the long axis of the second liquid crystal molecule and the absorption axis of the dichroic dye molecule are parallel to the light-emitting surface of the display panel.

[0011] Optionally, the display panel further includes a first polarizer layer, a first alignment layer, a second polarizer layer, and a second alignment layer. The first polarizer layer is disposed on the side of the array substrate away from the color filter substrate; the first alignment layer is disposed on the side of the array substrate close to the color filter substrate; the second polarizer layer is disposed on the side of the color filter substrate away from the array substrate; and the second alignment layer is disposed on the side of the color filter substrate close to the array substrate.

[0012] This application also discloses a driving method for a display panel, applied to the display panel described in any of the above claims, the driving method for the display panel comprising the steps of: Determine whether the displayed image is dark or bright; When displaying a dark screen, the liquid crystal composite layer is controlled to be in the first state; when displaying a bright screen, the liquid crystal composite layer is controlled to be in the second state. The first electrode layer and the second electrode layer control the switching of the liquid crystal dimming layer between the first state and the second state.

[0013] This application also discloses a display device, including a driving circuit and a display panel as described in any of the above claims, wherein the driving circuit drives the display panel.

[0014] The display panel of this application incorporates a liquid crystal dimming layer. Within this layer, an ultraviolet light-absorbing structure is incorporated to encapsulate dichroic dye molecules. This ultraviolet light-absorbing structure blocks ultraviolet light from the photoalignment process and long-term use, preventing direct ultraviolet light from irradiating the dichroic dye molecules and the second liquid crystal molecules. This prevents the dichroic dye molecules from fading and the second liquid crystal molecules from photopolymerizing, which would lead to contrast degradation and increased color shift. This ensures the stability of the performance of the dichroic dye molecules and the second liquid crystal molecules. Furthermore, the dichroic dye molecules absorb light when the display panel is in a dark state, preventing light leakage and resulting in a better dark display effect. This also improves the contrast of the display panel to a certain extent. Attached Figure Description

[0015] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of the liquid crystal dimming layer of a display panel in the first state according to the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of the liquid crystal dimming layer of a display panel in the second state according to the first embodiment of this application; Figure 3 This is a schematic diagram of the specific structure of a display panel according to the first embodiment of this application; Figure 4 This is a schematic diagram of the structure of a color filter substrate in a display panel according to the first embodiment of this application; Figure 5 This is a schematic diagram of the structure of an array substrate in a display panel according to the first embodiment of this application; Figure 6 This is a flowchart of the steps of a driving method for a display panel according to a second embodiment of this application; Figure 7 This is a schematic diagram of the structure of a display device according to the third embodiment of this application.

[0016] Among them, 100 is a display panel; 110 is a color filter substrate; 120 is an array substrate; 130 is a liquid crystal dimming layer; 131 is an ultraviolet light absorption structure; 132 is a first liquid crystal molecule; 133 is a second liquid crystal molecule; 134 is a dichroic dye molecule; 140 is a first electrode layer; 150 is a second electrode layer; 160 is a first polarizer layer; 170 is a first alignment layer; 180 is a second polarizer layer; 190 is a second alignment layer; 200 is a driving circuit; and 300 is a display device. Detailed Implementation

[0017] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0018] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0019] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] like Figure 1 As shown, as a first embodiment of this application, a display panel 100 is disclosed. The display panel 100 includes a color filter substrate 110 and an array substrate 120 disposed opposite each other. The display panel 100 also includes a liquid crystal dimming layer 130, a first electrode layer 140, and a second electrode layer 150. The liquid crystal dimming layer 130 is disposed between the color filter substrate 110 and the array substrate 120. The liquid crystal dimming layer 130 includes a plurality of ultraviolet light-absorbing structures 131 and first liquid crystal molecules 132 filled between the plurality of ultraviolet light-absorbing structures 131. The plurality of ultraviolet light-absorbing structures 131 are arranged in an array, and the ultraviolet light-absorbing structures 131 are filled with second liquid crystal molecules. The array substrate 120 contains dichroic dye molecules 133 and 134. The first electrode layer 140 is disposed on the side of the array substrate 120 near the color filter substrate 110, and the second electrode layer 150 is disposed on the side of the color filter substrate 110 near the array substrate 120. The liquid crystal dimming layer 130 includes a first state and a second state. The first electrode layer 140 and the second electrode layer 150 control the liquid crystal dimming layer 130 to switch between the first state and the second state. In this embodiment, the absorption axis of the dichroic dye molecule 134 is parallel to the long axis of the second liquid crystal molecule 133, and the display panel 100 is a VA (Vertical Alignment) display panel 100.

[0023] The liquid crystal dimming layer 130 of this application contains an ultraviolet light-absorbing structure 131 and a first liquid crystal molecule 132 located between the ultraviolet light-absorbing structure 131. The display panel 100 controls the liquid crystal dimming layer 130 to switch between a first state and a second state through a first electrode layer 140 and a second electrode layer 150, so as to realize the switching between bright display and dark display of the display panel 100. When the first electrode layer 140 and the second electrode layer 150 control the liquid crystal dimming layer 130 to be in the first state, the dichroic dye molecules 134 in the ultraviolet light-absorbing structure 131 absorb light to form a dark display image. When the first electrode layer 140 and the second electrode layer 150 control the liquid crystal dimming layer 130 to be in the second state, light can pass through the dichroic dye molecules 134 in the ultraviolet light-absorbing structure 131. To achieve a bright-state display, the display panel 100 of this application incorporates an ultraviolet light-absorbing structure 131 and a first electrode layer 140 and a second electrode layer 150 for controlling the liquid crystal dimming layer 130. The first electrode layer 140 and the second electrode layer 150 control the liquid crystal dimming layer 130 to switch between bright and dark states. Furthermore, the dichroic dye molecules 134 absorb light during dark state display, preventing light leakage and improving the dark state display effect. This enhances the contrast of the display panel 100 to some extent. The ultraviolet light-absorbing structure 131 also blocks ultraviolet light from the photoalignment process and long-term use, preventing direct ultraviolet light from irradiating the dichroic dye molecules 134 and the second liquid crystal molecules 133. The ultraviolet light-absorbing structure 131 and the first liquid crystal molecules 132 are both located within the display area of ​​the display panel 100.

[0024] Specifically, such as Figure 1 As shown, in the first state, the long axis of the second liquid crystal molecule 133 and the absorption axis of the dichroic dye molecule 134 are perpendicular to the light-emitting surface of the display panel 100. At this time, the display panel 100 is in a dark state, and light is absorbed by the dichroic dye molecule 134 to avoid light leakage. Figure 2As shown, in the second state, the long axis of the second liquid crystal molecule 133 and the absorption axis of the dichroic dye molecule 134 are parallel to the light-emitting surface of the display panel 100, allowing light to pass through the dichroic dye molecule 134 for bright-state display. The display panel 100 of this application, by providing an ultraviolet light-absorbing structure 131, and containing the second liquid crystal molecule 133 and the dichroic dye molecule 134, can block the ultraviolet light from the photoalignment process and the ultraviolet light used over a long period, preventing direct ultraviolet light from irradiating the dichroic dye molecule 134 and the second liquid crystal molecule 133, thus preventing fading of the dichroic dye molecule 134 and photopolymerization of the second liquid crystal molecule 133, resulting in contrast attenuation and increased color shift. This ensures the stable performance of the dichroic dye molecule 134 and the second liquid crystal molecule 133. The second liquid crystal molecule 133 is a negative liquid crystal molecule, and the first liquid crystal molecule 132 is a negative liquid crystal molecule.

[0025] In this embodiment, the ultraviolet light-absorbing structure 131 is a capsule structure, which includes a polymer capsule wall. The polymer capsule wall encapsulates the second liquid crystal molecule 133 and the dichroic dye molecule 134 to form the capsule structure. The capsule structure is circular or elliptical. The circular or elliptical capsule structure can restrict the disordered movement of the second liquid crystal molecule 133 disposed inside it, and improve the uniformity of vertical orientation. The first electrode layer 140 and the second electrode layer 150 can better control the switching of the liquid crystal dimming layer 130 between the first state and the second state. The polymer capsule wall can be made of one of polysiloxane, polyimide, or PMMA composite polymer with added ZnO-TiO2 composite nanoparticles.

[0026] Furthermore, the thickness of the polymer capsule wall is between 150 nm and 300 nm. When the thickness of the polymer capsule wall is less than 150 nm, the nanoparticles in the polymer capsule wall cannot form a continuous ultraviolet absorption barrier, and the ultraviolet absorption rate in the target wavelength band will be less than 99%. The second liquid crystal molecule 133 and the dichroic dye molecule 134 coated by the polymer capsule wall are easily degraded by ultraviolet light, which cannot meet the requirements of FSA process compatibility and long-term stability. In addition, the polymer capsule wall is prone to defects such as pinholes and cracks, which lead to leakage of the second liquid crystal molecule 133 and the dichroic dye molecule 134. When the thickness of the polymer capsule wall is greater than 300 nm, since the polymer capsule wall is an insulating medium, Excessive thickness increases the resistance to electric field penetration. The electric field formed by the first electrode layer 140 and the second electrode layer 150 needs to penetrate a thicker insulating layer to act on the second liquid crystal molecule 133 in the ultraviolet light-absorbing structure 131. This leads to an increase in the response time of the second liquid crystal molecule 133, and the display panel 100 is prone to ghosting when performing dynamic display, affecting the display effect. In summary, the thickness of the polymer capsule wall is between 150nm and 300nm, which can ensure an absorption rate of ≥99% for ultraviolet light in the 313nm to 405nm band and a visible light transmittance of ≥90%. This not only blocks the degradation of dichroic dye molecules 134 by light outside the photo-alignment process, but also ensures the display effect of the display panel 100. In this embodiment, when the ultraviolet light-absorbing structure 131 is a circular structure, the particle size of the ultraviolet light-absorbing structure 131 is between 2.5 μm (micrometer) and 5 μm (micrometer). The mass fraction of the ultraviolet light-absorbing structure 131 in the liquid crystal dimming layer 130 is 45% to 60%. The remaining space in the liquid crystal dimming layer 130 is filled by the first liquid crystal molecules 132 to balance the orientation space and the light modulation efficiency.

[0027] The dichroic dye molecule 134 is selected from anthraquinone or azo dye molecules with high extinction coefficients, which achieves efficient light absorption when the display panel 100 is in a dark state, thus preventing light leakage. In addition, the second liquid crystal molecule 133 disposed in the ultraviolet light-absorbing structure 131 is vertically oriented. The second liquid crystal molecule 133 is a nematic liquid crystal with a pretilt angle of 87° to 90° and a viscosity of less than or equal to 20 mPa·s, which ensures the stability of the vertical orientation and the electric field response speed of the second liquid crystal molecule 133. The second liquid crystal molecule 133 is aligned by applying voltage through the first electrode layer 140 and the second electrode layer 150 to achieve the initial state of vertical orientation (i.e., when the liquid crystal dimming layer 130 is in the first state).

[0028] like Figure 3As shown, the display panel 100 further includes a first polarizer layer 160, a first alignment layer 170, a second polarizer layer 180, and a second alignment layer 190. The first polarizer layer 160 is disposed on the side of the array substrate 120 away from the color filter substrate 110. The first alignment layer 170 is disposed on the side of the array substrate 120 close to the color filter substrate 110. The second polarizer layer 180 is disposed on the side of the color filter substrate 110 away from the array substrate 120. The second alignment layer 190 is disposed on the side of the color filter substrate 110 close to the array substrate 120. On one side of the array substrate 120, the first polarizer layer 160 and the second polarizer layer 180 are orthogonally arranged in their polarization directions. The first alignment layer 170 and the second alignment layer 190 ensure the alignment of the first liquid crystal molecules 132 filled between the ultraviolet light-absorbing structures 131. The first liquid crystal molecules 132 are also vertically oriented to ensure that the vertical electric field formed by the first electrode layer 140 and the second electrode layer 150 effectively drives the second liquid crystal molecules 133 in the ultraviolet light-absorbing structure 131 and the first liquid crystal molecules 132 between the ultraviolet light-absorbing structures 131.

[0029] Specifically, such as Figure 4 and Figure 5 As shown, the array substrate 120 includes a first glass substrate 121. On the side of the first glass substrate 121 facing the color filter substrate 110, a first metal layer 122, a first metal insulating layer 123, an active layer 124, an ohmic contact layer 125, a second metal layer 126, a second metal insulating layer 127, and a first electrode layer 140 are stacked sequentially from bottom to top. The color filter substrate 110 includes a second glass substrate 111. On the side of the second glass substrate 111 near the array substrate 120, a black matrix layer 112, a color resist layer 113, a second electrode layer 150, and a PS layer 114 are stacked sequentially. In this embodiment, the ultraviolet light-absorbing structure 131 and the first liquid crystal molecule 132 are both disposed between the PS layer 114.

[0030] The display panel 100 of this application includes a liquid crystal dimming layer 130. An ultraviolet light-absorbing structure 131 is provided within the liquid crystal dimming layer 130 to encapsulate dichroic dye molecules 134. The ultraviolet light-absorbing structure 131 can block ultraviolet light from the photoalignment process and long-term use, preventing direct ultraviolet light from irradiating the dichroic dye molecules 134 and the second liquid crystal molecules 133. This prevents the dichroic dye molecules 134 from fading and the second liquid crystal molecules 133 from photopolymerizing, resulting in contrast attenuation and increased color shift. This ensures the stable performance of the dichroic dye molecules 134 and the second liquid crystal molecules 133. Furthermore, the dichroic dye molecules 134 absorb light when the display panel 100 is in a dark state, preventing light leakage and improving the dark state display effect, thus enhancing the contrast of the display panel 100 to a certain extent.

[0031] like Figure 6 As shown, as a second embodiment of this application, a driving method for a display panel is disclosed, applied to the display panel described in the above embodiment. The driving method for the display panel includes the following steps: Determine whether the display panel is in a dark or bright state; Specifically, by analyzing the display data of the display panel, the grayscale value in the display data corresponding to the current display screen is determined to indicate whether the display panel is in a dark or bright state. When displaying a dark screen, the liquid crystal composite layer is controlled to be in the first state; when displaying a bright screen, the liquid crystal composite layer is controlled to be in the second state. Specifically, when the display panel displays a dark image, the liquid crystal composite layer needs to be in the first state, where the dichroic dye molecules in the liquid crystal composite layer absorb light to form a dark image. When the display panel displays a bright image, the liquid crystal composite layer needs to be in the second state, where light can pass through the dichroic dye molecules for display. The first and second electrode layers control the switching of the liquid crystal dimming layer between a first state and a second state. Specifically, when the liquid crystal dimming layer needs to be in the first state, the first and second electrode layers are energized to control the deflection of the second liquid crystal molecules in the ultraviolet light-absorbing structure. The deflection of the second liquid crystal molecules drives the dichroic dye molecules to rotate, so that the absorption axis of the dichroic dye molecules is perpendicular to the light-emitting surface of the display panel. The dichroic dye molecules absorb the light incident into the liquid crystal dimming layer, so that the display panel forms a dark display image. When the liquid crystal dimming layer needs to be in the second state, the first and second electrode layers are energized to control the deflection of the second liquid crystal molecules in the ultraviolet light-absorbing structure. The deflection of the second liquid crystal molecules drives the dichroic dye molecules to rotate, so that the absorption axis of the dichroic dye molecules is parallel to the light-emitting surface of the display panel. The light incident into the liquid crystal dimming layer can pass through the dichroic dye molecules, so that the display panel forms a bright display image.

[0032] The driving method of the display panel in this embodiment determines whether the display panel is in a dark or bright state, and uses the first electrode layer and the second electrode layer to generate an electric field to control the liquid crystal dimming layer to switch between the first state and the second state, so as to conform to the dark or bright display scenario. When the display is in a dark state, the dichroic dye molecules in the liquid crystal dimming layer absorb the light, avoiding light leakage of the display panel when it is in a dark state, resulting in a better dark state display effect and improving the contrast of the display panel to a certain extent.

[0033] like Figure 7As shown, as a third embodiment of this application, a display device 300 is disclosed. The display device 300 includes a driving circuit 200 and a display panel 100 as described in the above embodiment. The driving circuit 200 drives the display panel 100.

[0034] The display device of this application, by setting a liquid crystal dimming layer, encapsulates dichroic dye molecules within the liquid crystal dimming layer using an ultraviolet light-absorbing structure. The ultraviolet light-absorbing structure can block the ultraviolet light during the photoalignment process and the ultraviolet light used over a long period of time, preventing ultraviolet light from directly irradiating the dichroic dye molecules and the second liquid crystal molecules, thus preventing the dichroic dye molecules from fading and the second liquid crystal molecules from photopolymerizing, resulting in contrast attenuation and color deviation. This ensures the stability of the performance of the dichroic dye molecules and the second liquid crystal molecules. Furthermore, the dichroic dye molecules absorb light when the display panel is in a dark state, avoiding light leakage when the display panel is in a dark state, resulting in a better dark state display effect and improving the contrast of the display device to a certain extent.

[0035] It should be noted that the limitations on each step involved in this solution are not considered as limiting the order of steps, provided that they do not affect the implementation of the specific solution. The steps listed first can be executed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the scope of protection of this application.

[0036] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0037] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A display panel comprising a color filter substrate and an array substrate disposed opposite each other, characterized in that, The display panel also includes: A liquid crystal dimming layer is disposed between the color filter substrate and the array substrate. The liquid crystal dimming layer includes a plurality of ultraviolet light-absorbing structures and a first liquid crystal molecule filled between the plurality of ultraviolet light-absorbing structures. The plurality of ultraviolet light-absorbing structures are arranged in an array. The ultraviolet light-absorbing structures are filled with a second liquid crystal molecule and a dichroic dye molecule. A first electrode layer is disposed on the side of the color filter substrate near the array substrate; and The second electrode layer is disposed on the side of the array substrate close to the color filter substrate; The liquid crystal dimming layer includes a first state and a second state, and the first electrode layer and the second electrode layer control the switching of the liquid crystal dimming layer between the first state and the second state.

2. The display panel according to claim 1, characterized in that, The ultraviolet light-absorbing structure is a capsule structure, which includes a polymer capsule wall that encapsulates a second liquid crystal molecule and a dichroic dye molecule. The ultraviolet light-absorbing structure accounts for 45% to 60% of the mass fraction of the liquid crystal dimming layer.

3. The display panel according to claim 1, characterized in that, The second liquid crystal molecule is vertically oriented, the pretilt angle of the second liquid crystal molecule is 87° to 90°, and the viscosity is less than or equal to 20 mPa·s.

4. The display panel according to claim 1, characterized in that, The dichroic dye molecules are selected from anthraquinone or azo dye molecules with high extinction coefficients.

5. The display panel according to claim 2, characterized in that, The thickness of the polymer capsule wall is between 150 nanometers and 300 nanometers, and the polymer capsule wall is made of one of polysiloxane, polyimide, or PMMA composite polymer with added ZnO-TiO2 composite nanoparticles.

6. The display panel according to claim 1, characterized in that, The ultraviolet light-absorbing structure is circular, and the particle size of the ultraviolet light-absorbing structure is between 2.5 micrometers and 5 micrometers.

7. The display panel according to claim 1, characterized in that, In the first state, the long axis of the second liquid crystal molecule and the absorption axis of the dichroic dye molecule are perpendicular to the light-emitting surface of the display panel. In the second state, the long axis of the second liquid crystal molecule and the absorption axis of the dichroic dye molecule are parallel to the light-emitting surface of the display panel.

8. The display panel according to claim 1, characterized in that, The display panel also includes: The first polarizer layer is disposed on the side of the array substrate away from the color filter substrate; A first alignment layer is disposed on the side of the array substrate close to the color filter substrate; A second polarizer layer is disposed on the side of the color filter substrate away from the array substrate; and The second alignment layer is disposed on the side of the color filter substrate close to the array substrate.

9. A driving method for a display panel, applied to the display panel as described in any one of claims 1 to 8, characterized in that, Including the following steps: Determine whether the displayed image is dark or bright; When displaying a dark screen, the liquid crystal composite layer is controlled to be in the first state; when displaying a bright screen, the liquid crystal composite layer is controlled to be in the second state. The first electrode layer and the second electrode layer control the switching of the liquid crystal dimming layer between the first state and the second state.

10. A display device, characterized in that, It includes a driving circuit and a display panel as described in any one of claims 1 to 8, wherein the driving circuit drives the display panel.

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