Liquid crystal display panel with adjustable visual angle and liquid crystal display device

Abstract

A liquid crystal display panel with an adjustable visual angle comprises a display liquid crystal box and a dimming box which are arranged in a mutually stacked mode. The display liquid crystal box comprises a color film substrate, an array substrate opposite to the color film substrate and a liquid crystal layer located between the color film substrate and the array substrate. The dimming box comprises a first substrate and a second substrate which are oppositely arranged, and the first substrate is close to the display liquid crystal box; one side, close to the second substrate, of the first substrate is provided with an astigmatism and brightness enhancement layer and a dimming liquid crystal layer, the astigmatism and brightness enhancement layer is provided with an uneven surface, dimming liquid crystal molecules are arranged in the dimming liquid crystal layer, and the refractive index no of the dimming liquid crystal molecules perpendicular to the optical axis direction is equal to the refractive index n of the astigmatism and brightness enhancement layer; the refractive index ne of the dimming liquid crystal molecules in the optical axis direction is larger than the refractive index n of the astigmatism brightening layer. According to the liquid crystal display panel with the adjustable visual angle, the visual angle range can be adjusted, and poor Domain can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a liquid crystal display panel and a liquid crystal display device with adjustable viewing angle. Background Art

[0002] Liquid Crystal Display (LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and currently dominates the field of flat panel displays. As electronic products are rapidly developing towards lightness, thinness and miniaturization, almost all portable electronic products use LCD as display terminals, especially in camcorders, laptops, desktop computers, smart TVs, smart phones, personal digital processors and other products.

[0003] The liquid crystal display panel is one of the key components of the liquid crystal display device. The reflective liquid crystal display panel uses the reflection of ambient light to achieve display. It has the advantages of low power consumption, a wide range of display colors, and high resolution, and is increasingly widely used. Because the reflective liquid crystal display has no backlight, in order to improve the reflectivity and viewing angle, the reflected light needs to be scattered.

[0004] Figure 1 is a schematic diagram of the cross-sectional structure of an existing reflective liquid crystal display panel, please refer to Figure 1 The existing reflective liquid crystal display panel includes a lower substrate 1 and an upper substrate 2 facing each other, and a liquid crystal layer 3 sandwiched between the lower substrate 1 and the upper substrate 2. A diffuse reflection layer 4 is provided on the side of the lower substrate 1 close to the upper substrate 2. The diffuse reflection layer 4 has an uneven surface, and a PI alignment layer (not shown) is formed on the surface of the diffuse reflection layer 4. Since the surface of the diffuse reflection layer 4 is uneven, there is a weak friction area when the PI alignment layer is formed by rubbing. The matching ability of the weak friction area is weaker than that of the normal area, resulting in abnormal alignment of liquid crystal molecules in the liquid crystal layer 3, thereby causing light leakage, which is manifested as a localized regional (Domain) defect. Utility Model Content

[0005] The utility model aims to provide a liquid crystal display panel and a liquid crystal display device with adjustable viewing angle, which can adjust the viewing angle range and avoid domain defects.

[0006] The utility model provides a liquid crystal display panel with adjustable viewing angle, comprising a display liquid crystal box and a dimming box stacked on each other; the display liquid crystal box comprises a color filter substrate, an array substrate arranged opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the array substrate; the dimming box comprises a first substrate and a second substrate arranged opposite to each other, the first substrate being close to the display liquid crystal box; a light-scattering brightness enhancement layer and a dimming liquid crystal layer are arranged on a side of the first substrate close to the second substrate, the light-scattering brightness enhancement layer having an uneven surface, and dimming liquid crystal molecules are arranged in the dimming liquid crystal layer, and the refractive index n of the dimming liquid crystal molecules perpendicular to the optical axis direction is o is equal to the refractive index n of the light-scattering brightness enhancement layer, and the refractive index n of the dimming liquid crystal molecules along the optical axis e Greater than the refractive index n of the light-scattering brightening layer.

[0007] Furthermore, the dimming box also includes a dimming electrode layer, the dimming electrode layer includes a first electrode layer and a second electrode layer, the first electrode layer is arranged on a side of the first substrate close to the second substrate, and the second electrode layer is arranged on a side of the second substrate close to the first substrate.

[0008] Furthermore, the first electrode layer includes a plurality of first sub-electrodes arranged at intervals, and the second electrode layer includes a plurality of second sub-electrodes arranged at intervals, and the positions of the plurality of first sub-electrodes and the plurality of second sub-electrodes are arranged in one-to-one correspondence; the plurality of first sub-electrodes and the plurality of second sub-electrodes are divided into group A and group B for applying different voltages.

[0009] The present utility model also provides a liquid crystal display panel with adjustable viewing angle, including a display liquid crystal box; the display liquid crystal box includes a color filter substrate, an array substrate arranged opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the array substrate; the array substrate is also provided with a light-scattering and brightening layer on a side close to the color filter substrate, and the light-scattering and brightening layer has an uneven surface; display liquid crystal molecules and dimming liquid crystal molecules are arranged in the liquid crystal layer, and the refractive index n of the dimming liquid crystal molecules perpendicular to the optical axis direction is o is equal to the refractive index n of the light-scattering brightness enhancement layer, and the refractive index n of the dimming liquid crystal molecules along the optical axis e Greater than the refractive index n of the light-scattering brightening layer.

[0010] Furthermore, a dimming electrode layer is further provided in the display liquid crystal box, and the dimming electrode layer is arranged on a side of the color filter substrate close to the array substrate.

[0011] Furthermore, the array substrate is further provided with a reflective layer on a side facing the liquid crystal layer, and the reflective layer has a flat surface.

[0012] Furthermore, a backlight source is provided on a side of the array substrate away from the color filter substrate.

[0013] Furthermore, it also includes a circular polarizer, which is arranged on the side of the color film substrate away from the array substrate. When the liquid crystal display panel with adjustable viewing angle is provided with the dimming box, the circular polarizer is arranged on the side of the dimming box away from the display liquid crystal box.

[0014] Furthermore, the refractive index n of the dimming liquid crystal molecules perpendicular to the optical axis is o Or the refractive index n of the light-scattering brightening layer is 1.48-1.65, and the refractive index n of the dimming liquid crystal molecules along the optical axis is e Is greater than or equal to 1.8.

[0015] An embodiment of the utility model further provides a liquid crystal display device, comprising the above-mentioned liquid crystal display panel with adjustable viewing angle.

[0016] The liquid crystal display panel with adjustable viewing angle provided by the embodiment of the utility model utilizes the birefringence characteristics of the dimming liquid crystal molecules in combination with the light-scattering brightening layer, and then controls the voltage applied to the first electrode layer and / or the second electrode layer to deflect the dimming liquid crystal molecules, causing the birefringence coefficient of the liquid crystal to change, and can also adjust the viewing angle range of the light-emitting surface of the dimming box. In addition, there is no need to set an uneven reflective layer in the dimming box of the liquid crystal display panel with adjustable viewing angle, which effectively avoids the occurrence of domain defects.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make other purposes, features and advantages of the utility model more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of an existing reflective liquid crystal display panel.

[0019] Figure 2 It is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to the first embodiment of the utility model.

[0020] Figure 3 yes Figure 2 Schematic diagram of the optical path structure of the dimming box.

[0021] Figure 4 It is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to the second embodiment of the utility model.

[0022] Figure 5It is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to the third embodiment of the utility model.

[0023] Figure 6 It is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to the fourth embodiment of the utility model.

[0024] Figures 7a to 7c It is a schematic diagram of the arrangement structure of the first sub-electrode or the second sub-electrode of the liquid crystal display panel with adjustable viewing angle according to the fourth embodiment of the utility model.

[0025] Figure 8 It is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to the fifth embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation method, structure, characteristics and effects of the utility model are described in detail as follows in conjunction with the accompanying drawings and preferred embodiments:

[0027] The above and other technical contents, features and effects of the utility model will be clearly presented in the detailed description of the preferred embodiment with reference to the following figures. Through the description of the specific implementation method, the technical means and effects adopted by the utility model to achieve the predetermined purpose can be more deeply and specifically understood, but the attached figures are only for reference and description, and are not used to limit the utility model.

[0028] [First embodiment]

[0029] Figure 2 FIG. 1 is a schematic cross-sectional view of a liquid crystal display panel with adjustable viewing angle according to a first embodiment of the present invention. Figure 2 As shown, the liquid crystal display panel with adjustable viewing angle provided in the first embodiment of the utility model includes a display liquid crystal box 10 and a dimming box 20 which are stacked on each other.

[0030] The display liquid crystal box 10 includes a color filter substrate 11, an array substrate 12 arranged opposite to the color filter substrate 11, and a liquid crystal layer 13 located between the color filter substrate 11 and the array substrate 12. A color resist layer and a black matrix (BM) separating the color resist layer are provided on the color filter substrate 11 on the side facing the liquid crystal layer 13. The array substrate 12 is formed into a plurality of pixel units by a plurality of scan lines and a plurality of data lines which are insulated and crossed from each other on the side facing the liquid crystal layer 13. The black matrix corresponds to the scan lines and the data lines from top to bottom. A pixel electrode 121 and a thin film transistor 122 are provided in each pixel unit. The pixel electrode 121 is electrically connected through the thin film transistor 122. The thin film transistor 122 includes a gate, an active layer, a drain and a source. The gate is located in the same layer as the scan line and is electrically connected. The gate is separated from the active layer by an insulating layer. The source is electrically connected to the data line. The drain is electrically connected to the pixel electrode 121 through a contact hole.

[0031] In this embodiment, the array substrate 12 is further provided with a reflective layer 14 on the side facing the liquid crystal layer 13. The reflective layer 14 is, for example, provided above the pixel electrode 121, and an insulating layer 15 is further provided between the reflective layer 14 and the pixel electrode 121. Preferably, the reflective layer 14 has a flat surface. The reflective layer 14 is a material having a reflective function, such as aluminum or silver. In other embodiments, the reflective layer 14 may also serve as a pixel electrode, which is not limited here.

[0032] The dimming box 20 includes a first substrate 21 and a second substrate 22 that are arranged opposite to each other. The first substrate 21 is closer to the display liquid crystal box 10 than the second substrate 22 .

[0033] A light scattering brightness enhancement layer 23 and a dimming liquid crystal layer 24 are provided on the side of the first substrate 21 close to the second substrate 22 . The dimming liquid crystal layer 24 is arranged above the light scattering brightness enhancement layer 23 , that is, the light scattering brightness enhancement layer 23 is close to the first substrate 21 , and the dimming liquid crystal layer 24 is close to the second substrate 22 .

[0034] The light diffusion brightening layer 23 has an uneven surface. In this embodiment, the protruding structure 231 on the surface of the light diffusion brightening layer 23 is used to scatter the reflected light and reduce the light loss in the dimming box 20. The light diffusion brightening layer 23 is made of a material with high transmittance. The protruding structure 231 is similar to a convex lens and can increase the viewing angle of light. The shape of the protruding structure 231 can be triangular, circular, square, trapezoidal, etc., which is not limited here. The light diffusion brightening layer 23 can be made by 3D printing using UV glue.

[0035] The dimming liquid crystal layer 24 is provided with dimming liquid crystal molecules 241 whose refractive index matches that of the light-scattering brightening layer 23. The dimming liquid crystal molecules 241 are uniaxial birefringent liquid crystals. The dimming liquid crystal molecules 241 have a refractive index n along the optical axis. e and the refractive index n perpendicular to the optical axis o, wherein the refractive index n of the dimming liquid crystal molecule 241 perpendicular to the optical axis is o = equal to the refractive index n of the light-scattering brightness enhancement layer 23, and the refractive index n of the dimming liquid crystal molecules 241 along the optical axis e is greater than the refractive index n of the light-scattering brightness enhancement layer 23. Preferably, the refractive index n of the dimming liquid crystal molecules 241 perpendicular to the optical axis is o Or the refractive index n of the light-scattering brightness enhancement layer 23 is 1.48-1.65, and the refractive index n of the dimming liquid crystal molecules 241 along the optical axis is e Is greater than or equal to 1.8.

[0036] The dimming box 20 also includes a dimming electrode layer 25 for controlling the deflection of the dimming liquid crystal molecules 241 in the dimming liquid crystal layer 24. In this embodiment, the dimming electrode layer 25 includes a first electrode layer 211 and a second electrode layer 221, wherein the first electrode layer 211 is disposed on the side of the first substrate 21 close to the second substrate 22. In this embodiment, the first electrode layer 211 is located below the light-scattering and brightness-enhancing layer 23, but is not limited thereto; the second electrode layer 221 is disposed on the side of the second substrate 22 close to the first substrate 21. By applying voltage to the first electrode layer 211 and the second electrode layer 221, an electric field is formed in the dimming liquid crystal layer 24, and the deflection angle of the dimming liquid crystal molecules 241 is adjusted, thereby controlling the viewing angle range of the light-emitting surface of the dimming box 20. For example, when the first electrode layer 211 and the second electrode layer 221 are not powered, the dimming liquid crystal molecules 241 lie flat (i.e., the optical axis direction of the dimming liquid crystal molecules 241 is parallel to the dimming box 20), and the refractive index of the dimming liquid crystal molecules 241 is different from the refractive index of the light-scattering brightening layer 23. The dimming box 20 will disperse the light emitted from the display liquid crystal box 10 to form diffuse reflection, and then emit it from the light-emitting surface, showing a wide viewing angle. When the pressure difference between the first electrode layer 211 and the second electrode layer 221 is large, the dimming liquid crystal molecules 241 stand upright (i.e., the optical axis direction of the dimming liquid crystal molecules 241 is perpendicular to the dimming box 20), and the refractive index of the dimming liquid crystal molecules 241 is the same as the refractive index of the light-scattering brightening layer 23. The dimming box 20 will directly emit the light emitted from the display liquid crystal box 10 to form a mirror reflection, and then emit it from the light-emitting surface, showing a narrow viewing angle. To adjust the light output angle, voltage is applied to the first electrode layer 211 and the second electrode layer 221 to form an electric field in the dimming box 20, the dimming liquid crystal molecules 241 are deflected, the light is transformed from diffuse reflection to mirror reflection, and the light output angle is transformed from a wide viewing angle to a narrow viewing angle.

[0037] Furthermore, a circular polarizer 30 is provided on the side of the dimming box 20 away from the display liquid crystal box 10. The circular polarizer 30 is formed by a linear polarizer and a quarter wave plate at an angle of 45 degrees. The circular polarizer 30 is used to convert the circularly polarized light emitted by the dimming box 20 into linearly polarized light.

[0038] Figure 3 yes Figure 2Schematic diagram of the optical path structure of the dimming box in the figure, the left side of the vertical dotted line is the direction of the optical path during mirror reflection (narrow viewing angle), the right side of the vertical dotted line is the direction of the optical path during diffuse reflection (wide viewing angle), and the dotted box is the enlarged structure of the dimming liquid crystal molecule 241, such as Figure 3 As shown, when the optical axis direction of the dimming liquid crystal molecule 241 is perpendicular to the dimming box 20, the light reflected by the reflective layer 14 forms a mirror reflection after passing through the dimming box 20, and when the optical axis direction of the dimming liquid crystal molecule 241 is parallel to the dimming box 20, the light reflected by the reflective layer 14 forms a diffuse reflection after passing through the dimming box 20. By utilizing the birefringence characteristics of the dimming liquid crystal molecule 241 in conjunction with the light-scattering brightening layer 23, and then controlling the voltage applied to the first electrode layer 211 and the second electrode layer 221, the dimming liquid crystal molecule 241 is deflected, resulting in a change in the birefringence coefficient of the liquid crystal, and the viewing angle range of the light-emitting surface of the dimming box 20 can be adjusted. In addition, there is no need to set an uneven reflective layer in the dimming box 20 of the liquid crystal display panel with adjustable viewing angle, which effectively avoids the occurrence of Domain defects.

[0039] [Second embodiment]

[0040] Figure 4 FIG. 2 is a schematic cross-sectional view of a liquid crystal display panel with adjustable viewing angle according to a second embodiment of the present invention. Figure 4 As shown, the difference between the liquid crystal display panel with adjustable viewing angle of this embodiment and the first embodiment is that a backlight source 40 is provided on the side of the display liquid crystal box 10 away from the dimming box 20 (the side of the array substrate 12 away from the color filter substrate 11). The reflective layer 14 and the insulating layer 15 provided on one side of the array substrate 12 are eliminated. By directly providing the backlight source 40, it can be used in the case where ambient light is not available.

[0041] The other structures of the liquid crystal display panel with adjustable viewing angle of this embodiment are the same as those of the first embodiment, and will not be described in detail here.

[0042] [Third embodiment]

[0043] Figure 5 FIG. 4 is a schematic cross-sectional structure diagram of a liquid crystal display panel with adjustable viewing angle according to a third embodiment of the present invention. Figure 5 As shown, the difference between the liquid crystal display panel with adjustable viewing angle of this embodiment and the first embodiment is that the structure in the dimming box is integrated into the display liquid crystal box 10.

[0044] Specifically, the display liquid crystal box 10 includes a color filter substrate 11, an array substrate 12 arranged opposite to the color filter substrate 11, and a liquid crystal layer 13 located between the color filter substrate 11 and the array substrate 12. A color resist layer and a black matrix (BM) separating the color resist layer are provided on the color filter substrate 11 on the side facing the liquid crystal layer 13. The array substrate 12 is formed into a plurality of pixel units by a plurality of scan lines and a plurality of data lines which are insulated and crossed from each other on the side facing the liquid crystal layer 13. The black matrix corresponds to the scan lines and the data lines from top to bottom. A pixel electrode 121 and a thin film transistor 122 are provided in each pixel unit. The pixel electrode 121 is electrically connected through the thin film transistor 122. The thin film transistor 122 includes a gate, an active layer, a drain and a source. The gate is located in the same layer as the scan line and is electrically connected. The gate is separated from the active layer by an insulating layer. The source is electrically connected to the data line. The drain is electrically connected to the pixel electrode 121 through a contact hole.

[0045] The array substrate 12 is further provided with a reflective layer 14 on the side facing the liquid crystal layer 13. The reflective layer 14 is, for example, provided above the pixel electrode 121, and an insulating layer 15 is further provided between the reflective layer 14 and the pixel electrode 121. Preferably, the reflective layer 14 has a flat surface. The reflective layer 14 is made of a material having a reflective function, such as aluminum or silver.

[0046] In this embodiment, a light-scattering brightness enhancement layer 23 is further provided on the side of the array substrate 12 close to the color filter substrate 11, and the light-scattering brightness enhancement layer 23 is, for example, provided above the reflective layer 14. The light-scattering brightness enhancement layer 23 has an uneven surface, and the surface of the light-scattering brightness enhancement layer 23 shown in the figure is a wavy protruding structure 231, but the present invention is not limited thereto.

[0047] The liquid crystal layer 13 is provided with display liquid crystal molecules 131 and dimming liquid crystal molecules 241. The dimming liquid crystal molecules 241 are only used to adjust the viewing angle of the emitted light in cooperation with the light-scattering and brightness-enhancing layer 23, and do not affect the grayscale display of the display liquid crystal molecules 131. The dimming liquid crystal molecules 241 and the display liquid crystal molecules 131 are doped in the liquid crystal layer 13 in proportion.

[0048] The dimming liquid crystal molecule 241 is a uniaxial birefringent liquid crystal. The dimming liquid crystal molecule 241 has a refractive index n along the optical axis. e and the refractive index n perpendicular to the optical axis o , wherein the refractive index n of the dimming liquid crystal molecule 241 perpendicular to the optical axis is o = equal to the refractive index n of the light-scattering brightness enhancement layer 23, and the refractive index n of the dimming liquid crystal molecules 241 along the optical axis e The refractive index n of the light-scattering and brightness-enhancing layer 23 is greater than that of the light-scattering and brightness-enhancing layer 23. Preferably, the refractive index n of the light-scattering and brightness-enhancing layer 23 is 1.48-1.65, and the refractive index n of the dimming liquid crystal molecules 241 along the optical axis is e The refractive index n is 1.8.

[0049] Furthermore, the display liquid crystal box 10 is also provided with a dimming electrode layer 25 for controlling the deflection of the dimming liquid crystal molecules 241. In this example, the dimming electrode layer 25 is only provided on the side of the color filter substrate 11 close to the array substrate 12. By applying voltage to the dimming electrode layer 25 and the pixel electrode 121 of the array substrate 12, an electric field is formed in the liquid crystal layer 13 to adjust the deflection angle of the dimming liquid crystal molecules 241, thereby controlling the viewing angle range of the light-emitting surface of the display liquid crystal box 10. In this embodiment, there is no need to increase the thickness of the display liquid crystal box 10. When the dimming electrode layer 25 is not powered, the dimming liquid crystal molecules 241 lie flat, directly scattering the light in the display liquid crystal box 10, further improving the display effect.

[0050] The structure of this embodiment can also be configured as in the second embodiment to remove the reflective layer 13 and to provide a backlight source on one side of the display liquid crystal box 10 to provide light.

[0051] [Fourth embodiment]

[0052] Figure 6 FIG. 4 is a schematic cross-sectional view of a liquid crystal display panel with adjustable viewing angle according to a fourth embodiment of the present invention. Figure 6 As shown, the difference between the liquid crystal display panel with adjustable viewing angle of this embodiment and the first embodiment is that the first electrode layer 211 includes a plurality of first sub-electrodes 2111 arranged at intervals, and the second electrode layer 221 includes a plurality of second sub-electrodes 2211 arranged at intervals, and the positions of the plurality of first sub-electrodes 2111 and the plurality of second sub-electrodes 2211 are arranged in a one-to-one correspondence. The plurality of first sub-electrodes 2111 and the plurality of second sub-electrodes 2211 are divided into group A and group B for applying different voltages, so as to realize the partition control of the display dimming box 20, that is, to simultaneously present two display effects of mirror reflection or diffuse reflection. The first electrode layer 211 and the second electrode layer 221 can also be patterned into a plurality of sub-electrodes with specific shapes, and the clock and other images can be displayed by the brightness difference between diffuse reflection and mirror reflection.

[0053] Figures 7a to 7c Schematic diagram of the arrangement structure of the first sub-electrode or the second sub-electrode of the liquid crystal display panel with adjustable viewing angle according to the fourth embodiment of the utility model. Figures 7a to 7c As shown, the second sub-electrodes 2211 (first sub-electrodes 2111) of group A (shown as filled areas in the figure) and group B (shown as unfilled areas in the figure) are arranged alternately in one direction, horizontally or vertically, or in both horizontal and vertical directions.

[0054] [Fifth embodiment]

[0055] Figure 8 FIG. 4 is a schematic cross-sectional view of a liquid crystal display panel with adjustable viewing angle according to a fifth embodiment of the present invention. Figure 8As shown, the difference between the liquid crystal display panel with adjustable viewing angle of this embodiment and the first embodiment is that a backlight source 40 is provided on the side of the display liquid crystal box 10 away from the dimming box 20 (the side of the array substrate 12 away from the color filter substrate 11). The reflective layer 14 and the insulating layer 15 provided on one side of the array substrate 12 are eliminated. By directly providing the backlight source 40, it can be used in the case where ambient light is not available.

[0056] The other structures of the liquid crystal display panel with adjustable viewing angle of this embodiment are the same as those of the fourth embodiment, and will not be described in detail herein.

[0057] The dimming liquid crystal molecules 241 shown in the figures are rectangular only for the convenience of distinguishing them from the display liquid crystal molecules 131 , and are not their original shapes.

[0058] The preferred embodiment of the present invention also provides a liquid crystal display device, comprising the above-mentioned liquid crystal display panel with adjustable viewing angle. Other structures of the liquid crystal display device are well known in the art and will not be described in detail here.

[0059] The above specific examples of application illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. For general technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A liquid crystal display panel with adjustable viewing angle, It is characterized in that It comprises a display liquid crystal box (10) and a dimming box (20) which are stacked on each other; The display liquid crystal box (10) comprises a color film substrate (11), an array substrate (12) arranged opposite to the color film substrate (11), and a liquid crystal layer (13) located between the color film substrate (11) and the array substrate (12); The dimming box (20) comprises a first substrate (21) and a second substrate (22) which are arranged opposite to each other, and the first substrate (21) is close to the display liquid crystal box (10); A light-scattering brightness enhancement layer (23) and a dimming liquid crystal layer (24) are provided on a side of the first substrate (21) close to the second substrate (22); the light-scattering brightness enhancement layer (23) has an uneven surface; dimming liquid crystal molecules (241) are provided in the dimming liquid crystal layer (24); and the refractive index n of the dimming liquid crystal molecules (241) perpendicular to the optical axis is o is equal to the refractive index n of the light-scattering brightness enhancement layer (23), and the refractive index n of the dimming liquid crystal molecules (241) along the optical axis direction is e Greater than the refractive index n of the light-scattering brightness enhancing layer (23).

2. The liquid crystal display panel with adjustable viewing angle as claimed in claim 1, It is characterized in that The dimming box (20) further comprises a dimming electrode layer (25), wherein the dimming electrode layer (25) comprises a first electrode layer (211) and a second electrode layer (221), wherein the first electrode layer (211) is arranged on a side of the first substrate (21) close to the second substrate (22), and the second electrode layer (221) is arranged on a side of the second substrate (22) close to the first substrate (21).

3. The liquid crystal display panel with adjustable viewing angle as claimed in claim 2, It is characterized in that The first electrode layer (211) includes a plurality of first sub-electrodes (2111) arranged at intervals, and the second electrode layer (221) includes a plurality of second sub-electrodes (2211) arranged at intervals, and the positions of the plurality of first sub-electrodes (2111) and the plurality of second sub-electrodes (2211) are arranged in a one-to-one correspondence; the plurality of first sub-electrodes (2111) and the plurality of second sub-electrodes (2211) are divided into a group A and a group B for applying different voltages.

4. A liquid crystal display panel with adjustable viewing angle, It is characterized in that Comprising a display liquid crystal box (10); the display liquid crystal box (10) comprises a color film substrate (11), an array substrate (12) arranged opposite to the color film substrate (11), and a liquid crystal layer (13) located between the color film substrate (11) and the array substrate (12); A light-scattering brightness enhancement layer (23) is also provided on a side of the array substrate (12) close to the color film substrate (11), and the light-scattering brightness enhancement layer (23) has an uneven surface; The liquid crystal layer (13) is provided with display liquid crystal molecules (131) and light-adjusting liquid crystal molecules (241), wherein the light-adjusting liquid crystal molecules (241) have a refractive index n perpendicular to the optical axis. o is equal to the refractive index n of the light-scattering brightness enhancement layer (23), and the refractive index n of the dimming liquid crystal molecules (241) along the optical axis direction is e Greater than the refractive index n of the light-scattering brightness enhancing layer (23).

5. The liquid crystal display panel with adjustable viewing angle as claimed in claim 4, It is characterized in that A dimming electrode layer (25) is also provided in the display liquid crystal box (10), and the dimming electrode layer (25) is arranged on a side of the color film substrate (11) close to the array substrate (12).

6. The liquid crystal display panel with adjustable viewing angle according to any one of claims 1 to 5, It is characterized in that The array substrate (12) is further provided with a reflective layer (14) on the side facing the liquid crystal layer (13), and the reflective layer (14) has a flat surface.

7. The liquid crystal display panel with adjustable viewing angle according to any one of claims 1 to 5, It is characterized in that A backlight source (40) is provided on a side of the array substrate (12) away from the color film substrate (11).

8. The liquid crystal display panel with adjustable viewing angle according to any one of claims 1 to 5, It is characterized in that It also comprises a circular polarizer (30), wherein the circular polarizer (30) is arranged on a side of the color film substrate (11) away from the array substrate (12); when the viewing angle-adjustable liquid crystal display panel is provided with the dimming box (20), the circular polarizer (30) is arranged on a side of the dimming box (20) away from the display liquid crystal box (10).

9. The liquid crystal display panel with adjustable viewing angle according to any one of claims 1 to 5, It is characterized in that The refractive index n of the dimming liquid crystal molecule (241) perpendicular to the optical axis direction is o Or the refractive index n of the light-scattering brightness enhancement layer (23) is 1.48-1.65, and the refractive index n of the dimming liquid crystal molecules (241) along the optical axis direction is e Is greater than or equal to 1.

8.

10. A liquid crystal display device, It is characterized in that The invention comprises a liquid crystal display panel with adjustable viewing angle as claimed in any one of claims 1 to 9.

Images