Display panel, manufacturing method thereof and display device

Abstract

This application discloses a display panel, its manufacturing process, and a display device, relating to the field of display technology. The display panel includes a color filter substrate and an array substrate disposed opposite each other. The display panel also includes a liquid crystal composite layer, an electrode layer, an upper polarizer, and a lower polarizer. The liquid crystal composite layer is disposed between the color filter substrate and the array substrate. The liquid crystal composite layer includes liquid crystal molecules and dichroic dye molecules, with the absorption axis of the dichroic dye molecules perpendicular to the long axis of the liquid crystal molecules. The electrode layer includes a first electrode and a second electrode disposed on the array substrate. The first and second electrodes drive the liquid crystal composite layer, which includes a first state and a second state. The first and second electrodes control the switching of the liquid crystal composite layer between the first and second states. The display panel of this application achieves bright and dark states by controlling the switching of the liquid crystal composite layer between the first and second states through the electrode layer.

Description

Technical Field

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

[0002] With the rapid development of display technology, consumers have increasingly stringent requirements for the image quality of display panels. In particular, the widespread adoption of HDR (High-Dynamic Range) display specifications has made high contrast ratio one of the core indicators for measuring the performance of display panels. Traditional LCD display panels suffer from problems such as incomplete deflection of liquid crystal molecules and light leakage, resulting in some light transmission even in dark conditions. This makes it difficult to overcome the bottleneck in contrast ratio and meet the needs of high-end display scenarios (such as professional imaging, e-sports, and medical displays).

[0003] Existing technologies for improving LCD contrast primarily include optimizing liquid crystal alignment, increasing the number of polarizer layers, and employing local dimming techniques. However, these solutions suffer from drawbacks such as complex structures, high costs, reduced response speed, or increased energy consumption. Dye-based liquid crystals, as functional materials with light absorption modulation properties, can selectively absorb light through molecular orientation changes under an electric field. However, there is currently no mature technology that effectively combines dye-based liquid crystals with traditional LCD liquid crystals to achieve high-contrast displays through synergistic modulation. Therefore, developing a display panel that combines dye-based liquid crystals and LCD liquid crystals with a rational structure, stable performance, and significantly improved contrast has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] The purpose of this application is to provide a display panel, its manufacturing process, and a display device, which controls the liquid crystal composite layer to switch between a first state and a second state by setting an electrode layer, thereby realizing the bright and dark states of the display panel and improving the contrast of the display panel.

[0005] 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 composite layer, an electrode layer, an upper polarizer, and a lower polarizer. The liquid crystal composite layer is disposed between the color filter substrate and the array substrate, and includes liquid crystal molecules and dichroic dye molecules, with the absorption axis of the dichroic dye molecules perpendicular to the long axis of the liquid crystal molecules. The electrode layer includes a first electrode and a second electrode disposed on the array substrate, and the first electrode and the second electrode drive the liquid crystal composite layer. The upper polarizer is disposed on the side of the color filter substrate away from the array substrate. The lower polarizer is disposed on the side of the array substrate away from the color filter substrate, and the polarization axis of the upper polarizer is orthogonal to the polarization axis of the lower polarizer. The liquid crystal composite layer includes a first state and a second state, and the first electrode and the second electrode control the liquid crystal composite layer to switch between the first state and the second state.

[0006] Optionally, the liquid crystal composite layer may further include nanomagnetic particles.

[0007] Optionally, the mass of the liquid crystal molecule is greater than the mass of the dichroic dye molecule, and the mass of the dichroic dye molecule is greater than the mass of the nanomagnetic particles. The mass of the dichroic dye molecules is between 0.3% and 1%, and the mass of the nanomagnetic particles is between 0.1% and 0.5%.

[0008] Optionally, the surface of the nanomagnetic particles is coated with a liquid crystal compatibility modification layer, and the nanomagnetic particles are uniformly distributed within the liquid crystal composite layer; The liquid crystal compatibility modification layer is made of polyimide.

[0009] Optionally, the particle size of the magnetic nanoparticles is between 50 nanometers and 200 nanometers.

[0010] Optionally, the nanomagnetic particles are ferromagnetic particles, and the dichroic dye molecules are azo dichroic dye molecules.

[0011] Optionally, the liquid crystal molecules are positive liquid crystal molecules.

[0012] This application also discloses a manufacturing process method for a display panel, applied to the display panel described above, the manufacturing process method for the display panel including the following steps: Configure a liquid crystal composite layer; A liquid crystal composite layer is used to assemble the liquid crystal cell; The liquid crystal composite layer undergoes magnetron alignment treatment; and Assemble the display panel.

[0013] Optionally, the step of configuring the liquid crystal composite layer specifically includes: Take 100 portions of nematic liquid crystal; Heat to 80℃; Add 0.3 parts of surface-modified magnetic nanoparticles and 0.5 parts of dichroic dye molecules; Perform ultrasonic dispersion; Vacuum degassing is performed; A liquid crystal composite layer was obtained; The clearing point of the nematic liquid crystal is 75°C, and the viscosity is 15 mPa·s.

[0014] This application also discloses a display device, including a driving circuit and a display panel as described above, wherein the driving circuit drives the display panel.

[0015] The display panel of this application controls the liquid crystal composite layer to switch between a first state and a second state through a first electrode and a second electrode, so that the display panel can switch between a dark state display image and a bright state display image, realizing the working mode of the display panel switching between bright and dark. In addition, combined with dichroic dye molecules, the dichroic dye molecules absorb light to avoid light leakage when displaying in the dark state, making the dark state display image darker, while the bright state display does not affect the display effect, thereby improving the contrast of the display panel. Attached Figure Description

[0016] 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: Figure 1 This is a schematic diagram of the structure of a display panel in a dark state according to the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of a display panel in a lit state according to the first embodiment of this application; Figure 3 This is a flowchart of a manufacturing process for a display panel according to a second embodiment of this application; Figure 4 This is a schematic diagram of the structure of a display device according to the third embodiment of this application.

[0017] Among them, 100 is a display panel; 110 is an array substrate; 120 is a color filter substrate; 130 is an electrode layer; 131 is a first electrode; 132 is a second electrode; 140 is a liquid crystal composite layer; 141 is a liquid crystal molecule; 142 is a dichroic dye molecule; 143 is a nanomagnetic particle; 150 is an upper polarizer; 160 is a lower polarizer; 200 is a driving circuit; and 300 is a display device. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] like Figure 1As shown in the first embodiment of this application, a display panel 100 is disclosed. The display panel 100 includes a color filter substrate 120 and an array substrate 110, which are disposed opposite each other. The display panel 100 also includes a liquid crystal composite layer 140, an electrode layer 130, an upper polarizer 150, and a lower polarizer 160. The liquid crystal composite layer 140 is disposed between the color filter substrate 120 and the array substrate 110, and includes liquid crystal molecules 141 and dichroic molecules. The liquid crystal composite layer 140 includes a dichroic dye molecule 142, the absorption axis of which is perpendicular to the long axis of the liquid crystal molecule 141. The electrode layer 130 includes a first electrode 131 and a second electrode 132 disposed on the array substrate 110. The first electrode 131 and the second electrode 132 drive the liquid crystal composite layer 140. The upper polarizer 150 is disposed on the side of the color filter substrate 120 away from the array substrate 110, and the lower polarizer 160 is disposed on the side of the array substrate 110 away from the color filter substrate. On one side of 120, the polarization axis of the upper polarizer 150 is orthogonal to the polarization axis of the lower polarizer 160. The liquid crystal composite layer 140 includes a first state and a second state. The first electrode 131 and the second electrode 132 control the liquid crystal composite layer 140 to switch between the first state and the second state. When the first electrode 131 and the second electrode 132 are not energized, the liquid crystal composite layer 140 is in the first state, and the display panel 100 displays a dark image. When the first electrode 131 and the second electrode 132 are not energized, the liquid crystal composite layer 140 is in the first state, and the display panel 100 displays a dark image. When electrode 132 is energized, the liquid crystal composite layer 140 is in the second state, and the display panel 100 displays a bright image. In this embodiment, the dichroic dye molecules 142 include a long axis direction and a short axis direction that are perpendicular to each other. The absorption axis of the dichroic dye molecules 142 is the short axis of the dichroic dye molecules 142. The display panel 100 is also provided with a backlight layer (not shown in the figure) on the side of the lower polarizer 160 away from the array substrate 110. The backlight layer is used to provide light for the display panel 100.

[0024] The display panel 100 of this application controls the liquid crystal composite layer 140 to switch between a first state and a second state via a first electrode 131 and a second electrode 132, thereby allowing the display panel 100 to switch between a dark display and a bright display, realizing the bright-dark switching working mode of the display panel 100. In the dark display state, the first electrode 131 and the second electrode 132 are not energized, no electric field is formed between them, and the liquid crystal molecules 141 do not rotate. At this time, the light passing through the lower polarizer 160 does not... The polarization direction of the light is altered by the liquid crystal molecules 141, preventing the light from escaping the upper polarizer 150. Furthermore, the absorption axis of the dichroic dye molecules 142 aligns with the polarization direction of the light, causing them to absorb the light and thus making the dark-state image of the display panel 100 darker, enhancing the dark-state light-blocking effect. During bright-state display, the first electrode 131 and the second electrode 132 are energized to form a horizontal electric field. The liquid crystal molecules 141 rotate parallel to the direction of the electric field. When the liquid crystal molecules 141 rotate 90 degrees, the dichroic dye… Molecules 142 also rotate synchronously. At this time, the light passing through the lower polarizer 160 will have its polarization direction changed by the liquid crystal molecules 141. The light can pass through the liquid crystal composite layer 140 and exit the upper polarizer 150 to form a bright state display. Although the dichroic dye molecules 142 can also absorb the light whose polarization direction has been changed, the absorption of light is limited and does not affect the bright state display of the display panel 100. In general, the display panel 100 of this application avoids light leakage by setting the liquid crystal composite layer 140 and absorbing light through the dichroic dye molecules 142 in the dark state display, making the dark state display image darker, while not affecting the display effect in the bright state display, thereby improving the contrast of the display panel 100. Moreover, the first electrode 131 and the second electrode 132 are both set on the array substrate 110 to ensure that the electric field in the surface of the display panel 100 can drive the liquid crystal composite layer 140. It can be understood that the electrode layer 130 in this embodiment adopts the coplanar electrode setting of the IPS display panel 100, and multiple first electrodes 131 and second electrodes 132 are provided.

[0025] Furthermore, the liquid crystal composite layer 140 also includes nanomagnetic particles 143. The mass of the liquid crystal molecules 141 is greater than the mass of the dichroic dye molecules 142, and the mass of the dichroic dye molecules 142 is greater than the mass of the nanomagnetic particles 143. That is, in the liquid crystal composite layer 140, the proportion of liquid crystal molecules 141 is the largest, the proportion of nanomagnetic particles 143 is the smallest, the proportion of dichroic dye molecules 142 is greater than the proportion of nanomagnetic particles 143, and less than the proportion of liquid crystal molecules 141. The liquid crystal molecules 141, the nanomagnetic particles 143, and the dichroic dye molecules 142 are uniformly mixed. In this embodiment, the mass fraction of the nanomagnetic particles 143 is between 0.1% and 0.5%. Excessive amounts can easily lead to aggregation, while insufficient amounts result in weak magneto-orientation effects. The mass fraction of the dichroic dye molecules 142 is between 0.3% and 1%. Excessive amounts can easily lead to a decrease in light transmittance during bright-state display, while insufficient amounts can affect light leakage absorption. Designers can select and design the mass of the nanomagnetic particles 143 and the dichroic dye molecules 142 according to actual needs. Among them, the nanomagnetic particles 143 are ferromagnetic particles, such as Fe3O4 and CoFe2O4, and the dichroic dye molecules 142 are azo dichroic dye molecules 142.

[0026] In this embodiment, the liquid crystal composite layer 140 of the display panel 100 utilizes nano-magnetic particles 143 to prevent particle aggregation, ensuring that there are no problems such as delamination, aggregation, or phase separation between the liquid crystal molecules 141 and the dichroic dye molecules 142, while maintaining their respective properties. Simultaneously, the magnetic response characteristics of the nano-magnetic particles 143 are used to achieve precise orientation of the liquid crystal molecules 141 and dichroic dye molecules 142 within the liquid crystal composite layer 140, accurately positioning their initial states. In the liquid crystal composite layer of the display panel of this application, the magnetic response characteristics of nano-magnetic particles are used to achieve precise orientation of the liquid crystal molecules and dichroic dye molecules, replacing the original frictional orientation and avoiding frictional... The scratches generated during the wiping process improve the uniformity of orientation and compress the response time to less than 5ms, reducing the dynamic ghosting phenomenon caused by slow response time. At the same time, the liquid crystal composite layer 140 uses the polarization absorption of light by the dichroic dye molecules 142 to enhance the light-shielding effect of the display panel 100 in dark display, avoiding light leakage of the display panel 100 in dark display, which affects the display quality, and does not affect the display effect of the display panel 100 in bright display. Furthermore, under the action of the electric field generated by the first electrode 131 and the second electrode 132, the dichroic dye molecules 142 rotate with the rotation of the liquid crystal molecules 141, realizing the switching of the liquid crystal composite layer 140 between the first state and the second state.

[0027] In the display panel 100 of this application, the liquid crystal composite layer 140 is first adjusted to a first state by magnetron alignment, and then precise alignment of liquid crystal molecules 141 and dichroic dye molecules 142 is achieved using nano-magnetic particles 143, such as... Figure 1 As shown, the liquid crystal molecules 141 are horizontally arranged, and the long axis direction of the dichroic dye molecules 142 is the same as that of the liquid crystal molecules 141. The polarization direction of the light emitted from the lower polarizer 160 is not changed by the liquid crystal molecules 141, and the light is absorbed and blocked by the dichroic dye molecules 142 to avoid light leakage. The light cannot pass through the liquid crystal composite layer 140 and cannot be emitted from the upper polarizer 150. At this time, the display panel 100 displays a dark image. When the display panel 100 needs to display a bright image, the light is emitted through the first electrode 131. The second electrode 132 drives the liquid crystal molecules 141 to rotate (horizontally). The rotation of the liquid crystal molecules 141 causes the dichroic dye molecules 142 to rotate as well. At this time, the liquid crystal molecules 141 rotate 90 degrees relative to the liquid crystal dimming layer in the first state, and the dichroic dye molecules 142 rotate synchronously by 90 degrees. The polarization direction of the light emitted from the lower polarizer 160 is changed by the liquid crystal molecules 141, allowing the light to pass through the liquid crystal composite layer 140 and exit through the upper polarizer 150. The display panel 100 then achieves a bright state display, such as... Figure 2 As shown; in this embodiment, the liquid crystal molecule 141 is a positive liquid crystal molecule 141.

[0028] Specifically, to avoid particle aggregation and ensure that there are no problems such as delamination, aggregation, or phase separation between liquid crystal molecules 141 and dichroic dye molecules 142, the surface of the nanomagnetic particles 143 is coated with a liquid crystal compatibility modification layer, and the nanomagnetic particles are uniformly distributed within the liquid crystal composite layer 140. This allows the liquid crystal molecules 141 and dichroic dye molecules 142 to be aligned parallel to the light-emitting surface of the display panel 100 when the nanomagnetic particles 143 are oriented using a Helmholtz coil. The liquid crystal compatibility modification layer is made of polyimide, and the particle size of the nanomagnetic particles 143 is between 50 nanometers and 200 nanometers to balance the requirements of magnetic responsiveness and dispersibility.

[0029] The liquid crystal composite layer 140 of the display panel 100 utilizes the magnetic response characteristics of the nano-magnetic particles 143. By applying an in-plane magnetic field of 50mT to 100mT using a Helmholtz coil, the nano-magnetic particles 143 in the liquid crystal composite layer 140 are oriented and aligned. The nano-magnetic particles 143 achieve precise orientation of liquid crystal molecules 141 and dichroic dye molecules 142, so that the liquid crystal composite layer 140 is in a first state and the display panel 100 is in a dark display state.

[0030] In this embodiment, the display panel 100, when in a dark state, controls the liquid crystal composite layer 140 to be in a first state, and the nanomagnetic particles 143 can induce the liquid crystal molecules 141 and the dichroic dye molecules 142 to be uniformly oriented. Combined with the polarization absorption characteristics of the dichroic dye molecules 142, light leakage can be reduced, improving the display effect in the dark state. When in a bright state, the liquid crystal composite layer 140 is controlled to be in a second state, and the rotating liquid crystal molecules 141 change the polarization direction of the light emitted from the lower polarizer 160, so that it is emitted from the upper polarizer 150. Although the dichroic dye molecules 142 can also... The absorption of light that changes polarization direction is limited and does not affect the bright state display of the display panel 100, thus ensuring the bright state display of the display panel 100. In general, the display panel 100 of this embodiment controls the rotation of liquid crystal molecules 141 in the liquid crystal composite layer 140 through the electrode layer 130 to achieve the switching of the liquid crystal composite layer 140 between the first state and the second state, so as to achieve the effect of dark state display or bright state display of the display panel 100. Furthermore, the display effect of the display panel 100 in dark state display is enhanced by the dichroic dye molecules 142, thereby improving the contrast of the display panel 100.

[0031] like Figure 3 As shown, as a second embodiment of this application, a manufacturing method for a display panel is disclosed, applied to the display panel described in the above embodiment. The manufacturing method for the display panel includes the following steps: Configure a liquid crystal composite layer; Specifically, surface-modified magnetic nanoparticles, liquid crystal molecules, and dichroic dye molecules are prepared to configure a liquid crystal composite layer; wherein, the magnetic nanoparticles can be Fe3O4 particles, and the dichroic dye molecules can be azo dichroic dye molecules. A liquid crystal composite layer is used to assemble the liquid crystal cell; Specifically, after cleaning and drying the upper and lower substrates (glass substrates), an electrode layer is prepared, a sealant is applied, the prepared liquid crystal composite layer is drop-coated onto the lower substrate, the upper and lower substrates are bonded together, and the sealant is cured with ultraviolet light for 30 seconds to complete the assembly of the liquid crystal cell; wherein, the electrode layer can adopt the coplanar electrode design of an IPS type display panel. The liquid crystal composite layer undergoes magnetron alignment treatment; Specifically, the magnetic response characteristics of nano-magnetic particles are used to perform magnetron alignment treatment on the liquid crystal composite layer inside the liquid crystal cell to induce the alignment of liquid crystal molecules and dichroic dye molecules, so that the liquid crystal composite layer is in the initial state, that is, the liquid crystal composite layer is in the first state. The magnetron alignment treatment can be performed using a Helmholtz coil. The liquid crystal cell is placed in the Helmholtz coil, an in-plane magnetic field of 80mT is applied, and it is kept at 30℃ for 45min. Assemble the display panel; Specifically, the finished liquid crystal cell is attached to the upper and lower polarizers and the backlight layer is assembled to complete the assembly of the display panel.

[0032] The manufacturing process of the display panel in this embodiment controls the liquid crystal composite layer to switch between a first state and a second state, thereby allowing the display panel to switch between a dark display and a bright display, realizing a bright-dark switching working mode for the display panel. Furthermore, the liquid crystal composite layer utilizes nano-magnetic particles to prevent particle aggregation, ensuring that there are no problems such as delamination, aggregation, or phase separation between the liquid crystal molecules and the dichroic dye molecules, while maintaining their respective properties without being damaged. The polarization absorption of light by the dichroic dye molecules is used to enhance the light-shielding effect of the display panel in the dark state, thereby improving the contrast of the display panel.

[0033] Furthermore, the step of configuring the liquid crystal composite layer specifically includes: Take 100 parts of nematic liquid crystal, wherein the clearing point of the nematic liquid crystal is 75°C and the viscosity is 15 mPa·s; 100 parts of nematic liquid crystal were heated to 80°C; Add 0.3 parts of surface-modified Fe3O4 particles and 0.5 parts of azo dichroic dye molecules; The mixture was ultrasonically dispersed for 45 minutes using a 150W ultrasonic machine. The ultrasonically dispersed mixture was then degassed in a vacuum environment at 60°C for 1.5 hours. A liquid crystal composite layer was obtained.

[0034] The preparation process of the liquid crystal composite layer is as follows: First, 100g of nematic liquid crystal material with a clearing point at 75℃ and a viscosity parameter of 15mPa·s is weighed. After heating the material system to 80℃, 0.3g of surface-modified Fe3O4 nanoparticles and 0.5g of azo dichroic dye molecules are added sequentially. The mixture is dispersed for 45 minutes using a 150W ultrasonic processor, followed by vacuum degassing at 60℃ for 1.5 hours to finally obtain the liquid crystal composite layer.

[0035] The surface modification process of Fe3O4 nanoparticles is as follows: 10g of Fe3O4 nanoparticles are dispersed in 50mL of anhydrous ethanol, 2g of silane coupling agent is added, and the reaction is continuously stirred at 70℃ for 3 hours. After the reaction is completed, the product is collected by centrifugation, washed three times with ethanol, and finally dried at 80℃ to obtain surface-modified Fe3O4 nanoparticles.

[0036] like Figure 4As 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.

[0037] The display device in this example controls the liquid crystal composite layer to switch between a first state and a second state, thereby allowing the display panel to switch between a dark display and a bright display, achieving a bright-dark switching working mode for the display panel. The liquid crystal composite layer uses nano-magnetic particles to prevent particle aggregation, ensuring that there are no problems such as delamination, aggregation, or phase separation between liquid crystal molecules and dichroic dye molecules, while maintaining their respective properties. Furthermore, it utilizes the polarization absorption of light by dichroic dye molecules to enhance the light-shielding effect of the display panel in the dark state, thereby improving the contrast of the display panel.

[0038] 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.

[0039] 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.

[0040] 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, Also includes: A liquid crystal composite layer is disposed between the color filter substrate and the array substrate. The liquid crystal composite layer includes liquid crystal molecules and dichroic dye molecules, wherein the absorption axis of the dichroic dye molecules is perpendicular to the long axis of the liquid crystal molecules. An electrode layer includes a first electrode and a second electrode disposed on an array substrate, wherein the first electrode and the second electrode drive the liquid crystal composite layer; An upper polarizer is disposed on the side of the color filter substrate away from the array substrate; as well as The lower polarizer is disposed on the side of the array substrate away from the color filter substrate, and the polarization axis of the upper polarizer is orthogonal to the polarization axis of the lower polarizer. The liquid crystal composite layer includes a first state and a second state, and the first electrode and the second electrode control the liquid crystal composite layer to switch between the first state and the second state.

2. The display panel according to claim 1, characterized in that, The liquid crystal composite layer also includes nanomagnetic particles.

3. The display panel according to claim 2, characterized in that, The mass of the liquid crystal molecule is greater than the mass of the dichroic dye molecule, and the mass of the dichroic dye molecule is greater than the mass of the nanomagnetic particles. The mass of the dichroic dye molecules is between 0.3% and 1%, and the mass of the nanomagnetic particles is between 0.1% and 0.5%.

4. The display panel according to claim 2, characterized in that, The surface of the nanomagnetic particles is coated with a liquid crystal compatibility modification layer, and the nanomagnetic particles are uniformly distributed within the liquid crystal composite layer. The liquid crystal compatibility modification layer is made of polyimide.

5. The display panel according to claim 2, characterized in that, The particle size of the magnetic nanoparticles is between 50 nanometers and 200 nanometers.

6. The display panel according to claim 2, characterized in that, The nanomagnetic particles are ferromagnetic particles, and the dichroic dye molecules are azo dichroic dye molecules.

7. The display panel according to claim 1, characterized in that, The liquid crystal molecules are positive liquid crystal molecules.

8. A manufacturing process method for a display panel, applied to the display panel as described in any one of claims 1 to 7, characterized in that, Including the following steps: Configure a liquid crystal composite layer; A liquid crystal composite layer is used to assemble the liquid crystal cell; The liquid crystal composite layer undergoes magnetron alignment treatment; and Assemble the display panel.

9. The manufacturing process of the display panel according to claim 8, characterized in that, The steps for configuring the liquid crystal composite layer specifically include: Take 100 portions of nematic liquid crystal; Heat to 80℃; Add 0.3 parts of surface-modified magnetic nanoparticles and 0.5 parts of dichroic dye molecules; Perform ultrasonic dispersion; Vacuum degassing is performed; A liquid crystal composite layer was obtained; The clearing point of the nematic liquid crystal is 75°C, and the viscosity is 15 mPa·s.

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 7, wherein the driving circuit drives the display panel.

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