Display panel, manufacturing method thereof and display device

Abstract

This application belongs to the field of display technology, specifically relating to a display panel and its manufacturing method, and a display device. The display panel includes a first substrate, a liquid crystal layer, and a second substrate. The liquid crystal layer includes nematic liquid crystal and dye microcapsules. Each dye microcapsule includes a capsule shell and a dye disposed within the capsule shell. The capsule shell is light-transmitting and can be magnetically attracted. The first substrate includes a first sub-substrate and a plurality of electromagnets spaced apart. The electromagnets are disposed on the side of the first sub-substrate closer to the second substrate. The first substrate includes a pixel aperture region and a non-aperture region, with the electromagnets disposed in the non-aperture region. When the display panel is in a bright state, the electromagnets are controlled to attract the dye microcapsules to the non-aperture region, and the brightness of the display panel in the bright state is not affected by the dye. When the display panel is in a dark state, the electromagnets are controlled to stop attracting the dye microcapsules, and the brightness of the display panel in the dark state is reduced. This achieves a balance between brightness in both dark and bright states, improving the display effect of the display panel.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a display panel, its manufacturing method, and a display device. Background Technology

[0002] Liquid crystal display (LCD) panels can be mainly classified into twisted nematic (TN) liquid crystals, in-plane switching (IPS) liquid crystals, and vertical alignment (VA) liquid crystals, based on the initial orientation arrangement of liquid crystal molecules and the deflection motion mode driven by an electric field.

[0003] Adding dyes to liquid crystal materials allows the dyes to absorb light, reducing the brightness in the dark states of the display panel and improving its contrast, thus enhancing the display effect. However, adding dyes not only reduces the brightness in the dark states but also affects the brightness in the bright states, making it impossible to achieve a balance between both. Summary of the Invention

[0004] The purpose of this application is to provide a display panel and its manufacturing method and display device, which reduces the dark state brightness of the display panel without affecting the bright state brightness of the display panel.

[0005] To achieve the above objectives, this application provides a display panel, including a first substrate and a second substrate disposed opposite each other, wherein one of the first substrate and the second substrate is an array substrate and the other is an opposing substrate. The display panel further includes a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes nematic liquid crystal and dye microcapsules. The dye microcapsules include a capsule shell and a dye disposed in the capsule shell. The capsule shell is light-transmitting and can be magnetically attracted.

[0006] The first substrate includes a first substrate and a plurality of electromagnets spaced apart. The electromagnets are disposed on the side of the first substrate close to the second substrate. The first substrate includes a pixel aperture region and a non-aperture region, and the electromagnets are disposed in the non-aperture region.

[0007] Optionally, the first substrate is an array substrate, and the first substrate further includes a driving circuit layer and a plurality of pixel electrodes spaced apart. The driving circuit layer is disposed on the side of the first substrate close to the second substrate, and the pixel electrodes and the electromagnet are both disposed on the side of the driving circuit layer away from the first substrate. The pixel electrodes are disposed in the pixel opening area, and the pixel electrodes are connected to the electromagnet.

[0008] Optionally, the electromagnet includes a spiral coil and a magnetic electrode. The spiral coil is disposed on the side of the driving circuit layer away from the first substrate, and a first end of the spiral coil is connected to the pixel electrode. The first substrate further includes a light-transmitting insulating layer disposed on the side of the driving circuit layer away from the first substrate. The light-transmitting insulating layer covers the spiral coil and the pixel electrode. The magnetic electrode is disposed on the side of the light-transmitting insulating layer away from the first substrate, and the magnetic electrode passes through the light-transmitting insulating layer and is connected to a second end of the spiral coil.

[0009] Optionally, the electromagnet includes a spiral coil and a magnetic electrode. The spiral coil is disposed on the side of the driving circuit layer away from the first substrate. The first end of the spiral coil is connected to the magnetic electrode, which is the common electrode of the driving circuit layer. The first substrate further includes a light-transmitting insulating layer disposed on the side of the driving circuit layer away from the first substrate. The light-transmitting insulating layer covers the spiral coil. The pixel electrode is disposed on the side of the light-transmitting insulating layer away from the first substrate. The pixel electrode passes through the light-transmitting insulating layer and is connected to the second end of the spiral coil. The magnetic electrode, the spiral coil, and the pixel electrode are all made of a light-transmitting conductive material.

[0010] Optionally, the electromagnet is arranged in a one-to-one correspondence with the pixel electrode, the orthographic projection of the spiral coil on the first substrate is located in the center region of the orthographic projection of the pixel electrode on the first substrate, and when both the spiral coil and the pixel electrode are located between the driving circuit layer and the light-transmitting insulating layer, the pixel electrode includes a central hole, and the spiral coil is located in the central hole of the pixel electrode.

[0011] Optionally, the capsule shell includes a transparent substrate and a soft magnetic powder uniformly distributed in the transparent substrate, the soft magnetic powder including iron(III) oxide, and the transparent substrate including polyimide or polysiloxane.

[0012] Optionally, the liquid crystal layer further includes a polymer network formed on the first substrate and the second substrate, the polymer network comprising reactive mesocrystalline material.

[0013] This application also provides a method for manufacturing a display panel, the method being used to manufacture the aforementioned display panel, the method comprising: Fabricate the first substrate and the second substrate; Liquid crystal material is drop-coated in the display area of ​​the first substrate or the second substrate, the liquid crystal material including at least the nematic liquid crystal and the dye microcapsules, and a frame adhesive surrounding the display area is coated in the non-display area of ​​the first substrate or the second substrate. The first substrate and the second substrate are bonded together, and the frame adhesive is cured by ultraviolet light irradiation and / or heating.

[0014] Optionally, the liquid crystal material further includes reactive mesole, and the method for manufacturing the display panel further includes: After the first substrate and the second substrate are bonded together, the electromagnet is first controlled to attract the dye microcapsules, causing the dye microcapsules to polymerize into the non-opening area. Then, ultraviolet light is used to irradiate the display area from one side of the array substrate, causing the reactive mesomorphic material to polymerize onto the first substrate and the second substrate to form a polymer network. Finally, the frame adhesive is cured.

[0015] This application also provides a display device, including: Backlight module; The display panel is located on the light-emitting side of the backlight module.

[0016] The display panel, its manufacturing method, and the display device disclosed in this application have the following beneficial effects: In this application, the display panel includes a first substrate and a second substrate disposed opposite each other. The display panel also includes a liquid crystal layer disposed between the first and second substrates. The liquid crystal layer includes nematic liquid crystal and dye microcapsules. Each dye microcapsule includes a capsule shell and a dye disposed within the capsule shell. The capsule shell is light-transmitting and magnetically adsorbable. The first substrate includes a first sub-substrate and a plurality of spaced-apart electromagnets. The electromagnets are disposed on the side of the first sub-substrate closer to the second substrate. The first substrate includes a pixel aperture region and a non-aperture region, with the electromagnets disposed in the non-aperture region. When the display panel is in a bright state, the electromagnets are controlled to adsorb the dye microcapsules into the non-aperture region, and the brightness of the display panel in the bright state is not affected by the dye. When the display panel is in a dark state, the electromagnets are controlled to stop adsorbing the dye microcapsules, and the brightness of the display panel in the dark state is reduced. This achieves a balance between brightness in both dark and bright states, improving the display effect of the display panel.

[0017] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part by practice of this application.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that 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 inventive effort.

[0020] Figure 1 This is a schematic diagram of the structure of the first substrate in Embodiment 1 of this application.

[0021] Figure 2 yes Figure 1 A top-view diagram of the aperture area of ​​the middle pixel.

[0022] Figure 3 This is a schematic diagram of the display panel structure in Embodiment 1 of this application.

[0023] Figure 4 This is a schematic diagram of the structure of the first substrate in Embodiment 2 of this application.

[0024] Figure 5 This is a flowchart illustrating the manufacturing method of the display panel in Embodiment 3 of this application.

[0025] Figure 6 This is a schematic diagram of the liquid crystal ultraviolet light alignment process in Embodiment 3 of this application.

[0026] Figure 7 This is a schematic diagram of the structure of the display device in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures: 100, First substrate; 110, First substrate; 120, Electromagnet; 121, Helical coil; 122, Magnetic electrode; 130, Driving circuit layer; 140, Pixel electrode; 150, Light-transmitting insulating layer; 200, Second substrate; 210, Second substrate; 220, Color resist layer; 221, Black matrix; 300. Liquid crystal layer; 310. Nematic liquid crystal; 320. Dye microcapsule; 321. Capsule shell; 322. Dye; 330. Reactive mesocrystalline material; 10. Display panel; 20. Backlight module. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0031] Example 1 See Figures 1 to 3 As shown, in this embodiment, the display panel 10 includes a first substrate 100 and a second substrate 200 disposed opposite each other. One of the first substrate 100 and the second substrate 200 is an array substrate and the other is an opposing substrate. For example, the first substrate 100 is an array substrate and the second substrate 200 is an opposing substrate.

[0032] The display panel 10 also includes a liquid crystal layer 300 disposed between the first substrate 100 and the second substrate 200. The liquid crystal layer 300 includes nematic liquid crystal 310 and dye microcapsules 320. The dye microcapsules 320 include a capsule shell 321 and a dye 322 disposed in the capsule shell 321. The capsule shell 321 is light-transmitting and can be magnetically attracted. It should be noted that the capsule shells 321 are not magnetized, and the capsule shells 321 do not magnetically attract each other. The display panel 10 also includes a frame adhesive surrounding the liquid crystal layer 300 of the display area.

[0033] The first substrate 100 includes a first substrate 110 and a plurality of electromagnets 120 spaced apart, with the electromagnets 120 disposed on the side of the first substrate 110 near the second substrate 200. The first substrate 100 includes a pixel aperture region and a non-aperture region, the non-aperture region being opaque, and the electromagnets 120 being disposed in the non-aperture region.

[0034] In related technical solutions, dye 322 is added to the liquid crystal material. Dye 322 can absorb light, reducing the dark-state brightness of the display panel 10, improving the contrast of the display panel 10, and thus improving the display effect of the display panel 10. However, adding dye 322 not only reduces the dark-state brightness of the display panel 10, but also affects the bright-state brightness of the display panel 10, making it impossible to achieve a balance between dark-state and bright-state brightness.

[0035] In this embodiment, the display panel 10 includes a first substrate 100 and a second substrate 200 disposed opposite each other. The display panel 10 also includes a liquid crystal layer 300 disposed between the first substrate 100 and the second substrate 200. The liquid crystal layer 300 includes a nematic liquid crystal 310 and dye microcapsules 320. The dye microcapsules 320 include a capsule shell 321 and a dye 322 disposed in the capsule shell 321. The capsule shell 321 is light-transmitting and can be magnetically attracted. The first substrate 100 includes a first substrate 110 and a plurality of electromagnets 120 disposed at intervals. The electromagnets 120 are disposed on the side of the first substrate 110 close to the second substrate 200. The first substrate 100 includes a pixel aperture area and a non-aperture area. The electromagnets 120 are disposed in the non-aperture area. When the display panel 10 is in a bright state, the control electromagnet 120 adsorbs the dye microcapsules 320 into the non-opening area, so the brightness of the display panel 10 in the bright state is not affected by the dye 322. When the display panel 10 is in a dark state, the control electromagnet 120 stops adsorbing the dye microcapsules 320, so the brightness of the display panel 10 in the dark state is reduced. This achieves a balance between brightness in the dark state and brightness in the bright state, thus improving the display effect of the display panel 10.

[0036] In some embodiments, the first substrate 100 is an array substrate, and the first substrate 100 further includes a driving circuit layer 130 and a plurality of spaced pixel electrodes 140. The driving circuit layer 130 is disposed on the side of the first substrate 110 near the second substrate 200, and the pixel electrodes 140 and the electromagnet 120 are both disposed on the side of the driving circuit layer 130 away from the first substrate 110. The pixel electrode 140 is disposed in the pixel opening region, and the pixel electrode 140 is connected to the electromagnet 120, and the pixel electrode 140 supplies power to the electromagnet 120.

[0037] Electromagnet 120 is disposed on the array substrate. The pixel electrode 140 of the array substrate supplies power to the electromagnet 120. When the display panel 10 is in a dark state, the voltage on the pixel electrode 140 (relative to the common electrode) is 0 or approximately 0, and the electromagnet 120 stops adsorbing the dye microcapsules 320. When the display panel 10 is in a bright state, the voltage on the pixel electrode 140 (relative to the common electrode) is 0 or approximately 0, and the electromagnet 120 stops adsorbing the dye microcapsules 320. The voltage on the pixel electrode 140 drives the electromagnet 120 to work, adsorbing the dye microcapsules 320 to the non-opening area, so the brightness of the display panel 10 in the bright state is not affected by the dye 322.

[0038] In some embodiments, the electromagnet 120 includes a spiral coil 121 and a magnetic electrode 122. The spiral coil 121 is disposed on the side of the driving circuit layer 130 away from the first substrate 110. The first end of the spiral coil 121 is connected to the pixel electrode 140, and the first end of the spiral coil 121 can be the outer end of the spiral coil 121. When fabricating the spiral coil 121, a titanium metal layer and a copper metal layer can be deposited first. The titanium metal layer is used to increase the adhesion of the copper metal layer, and the copper metal layer mainly serves as a conductive layer. Then, the titanium metal layer and the copper metal layer are etched to form the spiral coil 121.

[0039] The first substrate 100 further includes a light-transmitting insulating layer 150, which is disposed on the side of the driving circuit layer 130 away from the first substrate 110. The light-transmitting insulating layer 150 covers the spiral coil 121 and the pixel electrode 140. A magnetic electrode 122 is disposed on the side of the light-transmitting insulating layer 150 away from the first substrate 110. The magnetic electrode 122 passes through the light-transmitting insulating layer 150 and is connected to the second end of the spiral coil 121. The first end of the spiral coil 121 can be the inner end of the spiral coil 121. The magnetic electrodes 122 of multiple electromagnets 120 can be connected to each other, and the voltage of the magnetic electrodes 122 of multiple electromagnets 120 is equal.

[0040] The first end of the spiral coil 121 is connected to the pixel electrode 140, and the second end of the spiral coil 121 is connected to the magnet electrode 122. By applying a voltage with or without a voltage difference through the pixel electrode 140 and the magnet electrode 122, the operation of the electromagnet 120 can be controlled.

[0041] It should be noted that the electromagnet 120 can be powered by the pixel electrode 140 of the first substrate 100, but it is not limited to this. It can also be powered by a separate conductive line on the side of the spiral coil 121 away from the first substrate 110, depending on the situation.

[0042] In some embodiments, the electromagnet 120 and the pixel electrode 140 are arranged in a one-to-one correspondence. The orthographic projection of the spiral coil 121 on the first substrate 110 is located in the central region of the orthographic projection of the pixel electrode 140 on the first substrate 110. Since both the spiral coil 121 and the pixel electrode 140 are located on the side of the driving circuit layer 130 away from the first substrate 110, the pixel electrode 140 is rectangular or rounded rectangular in shape, and the pixel electrode 140 may have a central hole, in which the spiral coil 121 is located. Each pixel electrode 140 corresponds to one sub-pixel, and each sub-pixel can be divided into two sub-regions in the row direction or column direction.

[0043] It should be noted that the pixel electrode 140 may have a central hole, and the spiral coil 121 is located in the central hole of the pixel electrode 140. However, it is not limited to this. A groove may also be provided on one side of the pixel electrode 140, and the spiral coil 121 is located in the groove of the pixel electrode 140. The specific arrangement depends on the situation.

[0044] The orthographic projection of the spiral coil 121 on the first substrate 110 is located in the center area of ​​the orthographic projection of the pixel electrode 140 on the first substrate 110. With this design, each electromagnet 120 adsorbs the dye microcapsule 320 of its sub-pixel to the central non-opening area without affecting other sub-pixels. When the brightness of adjacent sub-pixels is different, the display effect of the display panel 10 is better.

[0045] In some embodiments, the capsule shell 321 includes a transparent substrate and a soft magnetic powder uniformly distributed in the transparent substrate. The soft magnetic powder includes iron(II,III) oxide, and the transparent substrate includes polyimide or polysiloxane. The soft magnetic powder can be made of a light-transmitting material or an opaque material. Because the soft magnetic powder particles are small and do not fill the entire transparent substrate, the capsule shell 321 can still transmit light.

[0046] The capsule shell 321 includes a transparent substrate and a soft magnetic powder uniformly distributed in the transparent substrate. The soft magnetic powder is easy to demagnetize and retains almost no residual magnetism after the external magnetic field disappears, which can prevent the dye microcapsules 320 from being magnetically attracted to each other and affecting the display effect of the display panel 10.

[0047] In some embodiments, the liquid crystal layer 300 further includes a polymer network formed on the first substrate 100 and the second substrate 200, the polymer network including reactive mesomorphs 330. It should be understood that alignment films are also disposed on the first substrate 100 and the second substrate 200, and the reactive mesomorphs 330 polymerize on the alignment films to form the polymer network. That is, the display panel 10 can be a polymer stabilized vertically aligned liquid crystal (PSVA) display panel 10.

[0048] Polymer-stabilized vertically aligned liquid crystals (PSVA) are a type of vertically aligned liquid crystal. They achieve stable anchoring of liquid crystal molecules by adding a small amount of reactive mesoderm 330 (RM) to the liquid crystal and then polymerizing it under ultraviolet (UV) light to form a polymer network. PSVA offers advantages such as fast response time, high contrast, and high transmittance, making it widely applicable to mid-to-high-end display applications such as large-screen TVs, gaming monitors, and automotive displays.

[0049] In some embodiments, the second substrate 200 includes a second substrate 210 and a color resist layer 220. The color resist layer 220 includes red, green and blue color resists arranged at intervals, and a black matrix 221 disposed around the red, green and blue color resists. The black matrix 221 is used to block non-opening areas.

[0050] The black matrix 221 blocks the non-opening area, which can prevent the metal material in the non-opening area from reflecting light and affecting the display effect of the display panel 10.

[0051] Example 2 The difference between Example 2 and Example 1 is that the electromagnet 120 has a different structure.

[0052] See Figure 4 As shown, the electromagnet 120 includes a spiral coil 121 and a magnetic electrode 122. The spiral coil 121 is disposed on the side of the drive circuit layer 130 away from the first substrate 110. The first end of the spiral coil 121 is connected to the magnetic electrode 122. The first end of the spiral coil 121 can be the outer end of the spiral coil 121. The magnetic electrode 122 is the common electrode of the drive circuit layer 130.

[0053] The first substrate 100 further includes a light-transmitting insulating layer 150, which is disposed on the side of the driving circuit layer 130 away from the first substrate 110 and covers the spiral coil 121. A pixel electrode 140 is disposed on the side of the light-transmitting insulating layer 150 away from the first substrate 110. The pixel electrode 140 passes through the light-transmitting insulating layer 150 and connects to the second end of the spiral coil 121, where the second end of the spiral coil 121 can be the inner end. A via connecting the pixel electrode 140 and the spiral coil 121 can be disposed at the intersection of the ribs of the pixel electrode 140. The magnet electrode 122, the spiral coil 121, and the pixel electrode 140 are all made of a light-transmitting conductive material, including indium tin oxide (ITO).

[0054] The spiral coil 121 is disposed on the side of the driving circuit layer 130 away from the first substrate 110, and the pixel electrode 140 is disposed on the side of the spiral coil 121 away from the first substrate 110. Both the spiral coil 121 and the pixel electrode 140 are made of light-transmitting and conductive materials, and the spiral coil 121 does not occupy the design space of the pixel electrode 140. In addition, the voltage difference between the pixel electrode 140 and the common electrode drives the liquid crystal deflection. The magnet electrode 122 is the common electrode of the driving circuit layer 130, and the spiral coil 121 connects the pixel electrode 140 and the common electrode, so there is no need to set a separate common electrode for the spiral coil 121.

[0055] It should be noted that the magnetic electrode 122 is the common electrode of the driving circuit layer 130. The spiral coil 121 can connect the pixel electrode 140 and the common electrode, but it is not limited to this. The magnetic electrode 122 can also be set on the same layer as the common electrode but not connected to the common electrode. The voltage of the magnetic electrode 122 and the common electrode are equal, depending on the specific situation.

[0056] In some embodiments, the electromagnet 120 and the pixel electrode 140 are arranged in a one-to-one correspondence, and the orthographic projection of the spiral coil 121 on the first substrate 110 is located in the center region of the orthographic projection of the pixel electrode 140 on the first substrate 110.

[0057] The orthographic projection of the spiral coil 121 on the first substrate 110 is located in the center area of ​​the orthographic projection of the pixel electrode 140 on the first substrate 110. With this design, each electromagnet 120 adsorbs the dye microcapsule 320 of its sub-pixel to the central non-opening area without affecting other sub-pixels. When the brightness of adjacent sub-pixels is different, the display effect of the display panel 10 is better.

[0058] Example 3 This application also provides a method for manufacturing a display panel, which is used to manufacture the display panel 10 disclosed in Embodiment 1 or Embodiment 2. See also Figures 1 to 5 As shown, the method for manufacturing the display panel includes: S100: Fabrication of the first substrate 100 and the second substrate 200; S200: Liquid crystal material is drop-coated in the display area of ​​the first substrate 100 or the second substrate 200. The liquid crystal material includes at least nematic liquid crystal 310 and dye microcapsules 320. Frame adhesive surrounding the display area is coated in the non-display area of ​​the first substrate 100 or the second substrate 200. S300: The first substrate 100 and the second substrate 200 are bonded together and the frame adhesive is cured by ultraviolet light irradiation and / or heating.

[0059] Liquid crystal material can be drop-coated onto the first substrate 100 or the second substrate 200. The liquid crystal material can be drop-coated onto the substrate with a flatter display area, either the first substrate 100 or the second substrate 200. The liquid crystal material can be drop-coated between or after the application of the frame adhesive.

[0060] The method for manufacturing the display panel is used to manufacture the display panel 10 disclosed in Embodiment 1 or Embodiment 2, and therefore has all the beneficial effects of the display panel 10 disclosed in Embodiment 1 or Embodiment 2, which will not be repeated here.

[0061] In this embodiment, the display panel 10 includes a first substrate 100 and a second substrate 200 disposed opposite each other. The display panel 10 also includes a liquid crystal layer 300 disposed between the first substrate 100 and the second substrate 200. The liquid crystal layer 300 includes a nematic liquid crystal 310 and dye microcapsules 320. The dye microcapsules 320 include a capsule shell 321 and a dye 322 disposed in the capsule shell 321. The capsule shell 321 is light-transmitting and can be magnetically attracted. The first substrate 100 includes a first substrate 110 and a plurality of electromagnets 120 disposed at intervals. The electromagnets 120 are disposed on the side of the first substrate 110 close to the second substrate 200. The first substrate 100 includes a pixel aperture area and a non-aperture area. The electromagnets 120 are disposed in the non-aperture area. When the display panel 10 is in a bright state, the control electromagnet 120 adsorbs the dye microcapsules 320 into the non-opening area, so the brightness of the display panel 10 in the bright state is not affected by the dye 322. When the display panel 10 is in a dark state, the control electromagnet 120 stops adsorbing the dye microcapsules 320, so the brightness of the display panel 10 in the dark state is reduced. This achieves a balance between brightness in the dark state and brightness in the bright state, thus improving the display effect of the display panel 10.

[0062] In some embodiments, see Figure 6 As shown, the liquid crystal material also includes reactive mesocrystalline material 330, and the method for manufacturing the display panel further includes: After the first substrate 100 and the second substrate 200 are bonded together, the electromagnet 120 is first controlled to adsorb the dye microcapsules 320, so that the dye microcapsules 320 are polymerized into the non-opening area. Then, ultraviolet light is used to irradiate the display area from one side of the array substrate, so that the reactive mesomorphs 330 are polymerized onto the first substrate 100 and the second substrate 200 to form a polymer network, and then the frame adhesive is cured.

[0063] Adding dye 322 to polymer-stabilized vertically aligned liquid crystals can reduce dark-state brightness, thereby improving the contrast of the display panel 10. However, dye 322 is highly sensitive to ultraviolet light, and it is easily decomposed during the ultraviolet alignment process of polymer-stabilized vertically aligned liquid crystals, resulting in a decrease in the contrast of the display panel 10.

[0064] In this embodiment, during the ultraviolet alignment of the liquid crystal, the electromagnet 120 is first controlled to adsorb the dye microcapsules 320, causing the dye microcapsules 320 to aggregate into the non-opening area. This prevents the dye 322 from being decomposed by ultraviolet light during the ultraviolet alignment process, thus improving the contrast of the display panel 10. The dye microcapsules 320, adsorbed by the electromagnet 120, are then uniformly diffused into the liquid crystal layer 300.

[0065] Furthermore, the opposing substrate may include a color resist layer 220, which blocks some ultraviolet light, adversely affecting the ultraviolet alignment process of the liquid crystal. By having ultraviolet light irradiate the display area from one side of the array substrate, the color resist layer 220 can be prevented from blocking the ultraviolet light.

[0066] It should be noted that the color resist layer 220 can be disposed on the opposing substrate, but is not limited to this. The color resist layer 220 can also be disposed on the array substrate, i.e., using a COA (Color Filter on Array) structure, depending on the specific situation. The COA structure liquid crystal display panel 10 does not have the alignment problem between the opposing substrate and the array substrate, thus reducing the difficulty of the cell alignment process during the manufacturing of the display panel 10 and avoiding errors during cell alignment. The black matrix in the COA structure can be designed with a narrow linewidth, improving the aperture ratio. When the color resist layer 220 is disposed on the array substrate, ultraviolet light irradiates the display area from the opposing substrate side, completing the ultraviolet light alignment of the liquid crystal.

[0067] Example 4 See Figure 7 As shown, the display device in this embodiment includes a backlight module 20 and a display panel 10 disclosed in Embodiments 1 and 2. The display panel 10 is disposed on the light-emitting side of the backlight module 20.

[0068] In this embodiment, the display device includes a display panel 10, which includes a first substrate 100 and a second substrate 200 disposed opposite each other. The display panel 10 also includes a liquid crystal layer 300, which includes a nematic liquid crystal 310 and dye microcapsules 320. The dye microcapsules 320 include a capsule shell 321 and a dye 322 disposed in the capsule shell 321. The capsule shell 321 is light-transmitting and can be magnetically attracted. The first substrate 100 includes a first substrate 110 and a plurality of electromagnets 120 disposed at intervals. The electromagnets 120 are disposed on the side of the first substrate 110 near the second substrate 200. The first substrate 100 includes a pixel aperture area and a non-aperture area, and the electromagnets 120 are disposed in the non-aperture area. When the display panel 10 is in a bright state, the control electromagnet 120 adsorbs the dye microcapsules 320 into the non-opening area, so the brightness of the display panel 10 in the bright state is not affected by the dye 322. When the display panel 10 is in a dark state, the control electromagnet 120 stops adsorbing the dye microcapsules 320, so the brightness of the display panel 10 in the dark state is reduced. This achieves a balance between brightness in the dark state and brightness in the bright state, thus improving the display effect of the display panel 10.

[0069] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A display panel, comprising a first substrate and a second substrate disposed opposite each other, wherein one of the first substrate and the second substrate is an array substrate and the other is an opposing substrate, characterized in that, The display panel further includes a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes nematic liquid crystal and dye microcapsules. The dye microcapsules include a capsule shell and a dye disposed in the capsule shell. The capsule shell is light-transmitting and can be magnetically attracted. The first substrate includes a first substrate and a plurality of electromagnets spaced apart. The electromagnets are disposed on the side of the first substrate close to the second substrate. The first substrate includes a pixel aperture region and a non-aperture region, and the electromagnets are disposed in the non-aperture region.

2. The display panel according to claim 1, characterized in that, The first substrate is an array substrate. The first substrate further includes a driving circuit layer and a plurality of pixel electrodes spaced apart. The driving circuit layer is disposed on the side of the first substrate close to the second substrate. The pixel electrodes and the electromagnet are both disposed on the side of the driving circuit layer away from the first substrate. The pixel electrodes are disposed in the pixel opening area and are connected to the electromagnet.

3. The display panel according to claim 2, characterized in that, The electromagnet includes a spiral coil and a magnetic electrode. The spiral coil is disposed on the side of the driving circuit layer away from the first substrate, and a first end of the spiral coil is connected to the pixel electrode. The first substrate also includes a light-transmitting insulating layer, which is disposed on the side of the driving circuit layer away from the first substrate. The light-transmitting insulating layer covers the spiral coil and the pixel electrode. The magnetic electrode is disposed on the side of the light-transmitting insulating layer away from the first substrate, and the magnetic electrode passes through the light-transmitting insulating layer and is connected to a second end of the spiral coil.

4. The display panel according to claim 2, characterized in that, The electromagnet includes a spiral coil and a magnetic electrode. The spiral coil is disposed on the side of the driving circuit layer away from the first substrate. The first end of the spiral coil is connected to the magnetic electrode, which is the common electrode of the driving circuit layer. The first substrate also includes a light-transmitting insulating layer disposed on the side of the driving circuit layer away from the first substrate. The light-transmitting insulating layer covers the spiral coil. The pixel electrode is disposed on the side of the light-transmitting insulating layer away from the first substrate. The pixel electrode passes through the light-transmitting insulating layer and is connected to the second end of the spiral coil. The magnetic electrode, the spiral coil, and the pixel electrode are all made of light-transmitting conductive material.

5. The display panel according to claim 3 or 4, characterized in that, The electromagnets are arranged in a one-to-one correspondence with the pixel electrodes. When the orthographic projection of the spiral coil on the first substrate is located in the center region of the orthographic projection of the pixel electrode on the first substrate, and both the spiral coil and the pixel electrode are located between the driving circuit layer and the light-transmitting insulating layer, the pixel electrode includes a central hole, and the spiral coil is located in the central hole of the pixel electrode.

6. The display panel according to claim 1, characterized in that, The capsule shell comprises a transparent substrate and a soft magnetic powder uniformly distributed in the transparent substrate, wherein the soft magnetic powder comprises iron(II,III) oxide and the transparent substrate comprises polyimide or polysiloxane.

7. The display panel according to claim 1, characterized in that, The liquid crystal layer further includes a polymer network formed on the first substrate and the second substrate, the polymer network comprising reactive mesocrystalline material.

8. A method for manufacturing a display panel, characterized in that, The method for manufacturing the display panel is used to manufacture the display panel as described in any one of claims 1 to 7, wherein the method for manufacturing the display panel includes: Fabricate the first substrate and the second substrate; Liquid crystal material is drop-coated in the display area of ​​the first substrate or the second substrate, the liquid crystal material including at least the nematic liquid crystal and the dye microcapsules, and a frame adhesive surrounding the display area is coated in the non-display area of ​​the first substrate or the second substrate. The first substrate and the second substrate are bonded together, and the frame adhesive is cured by ultraviolet light irradiation and / or heating.

9. The method for manufacturing a display panel according to claim 8, characterized in that, The liquid crystal material further includes reactive mesole, and the method for manufacturing the display panel further includes: After the first substrate and the second substrate are bonded together, the electromagnet is first controlled to attract the dye microcapsules, causing the dye microcapsules to polymerize into the non-opening area. Then, ultraviolet light is used to irradiate the display area from one side of the array substrate, causing the reactive mesomorphic material to polymerize onto the first substrate and the second substrate to form a polymer network. Finally, the frame adhesive is cured.

10. A display device, characterized in that, include: Backlight module; The display panel as described in any one of claims 1 to 7 is disposed on the light-emitting side of the backlight module.

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