Display panel and display device

Abstract

A display panel and a display device. The display panel includes a stacked display liquid crystal panel and a light control panel; the display liquid crystal panel includes a plurality of grid lines, the plurality of grid lines include a plurality of first grid lines extending along a first direction and a plurality of second grid lines extending along a second direction to define a plurality of color sub-pixel units arranged in an array; the first direction and the second direction intersect each other; the light control panel is configured to allow backlight to be incident on the display liquid crystal panel through it and includes a plurality of signal lines; the plurality of signal lines include a plurality of first signal lines extending along a first direction and a plurality of second signal lines extending along a second direction to define a plurality of light control units arranged in an array; N color sub-pixel units arranged continuously along the first direction constitute a pixel unit, N is a positive integer; the N color sub-pixel units respectively display different colors; along the first direction, the maximum length of a light control unit is m times the maximum length of a pixel unit, m is a non-integer.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to a display panel and a display device. Background Art

[0002] In display panels, rainbow stripes are prone to occur, that is, human eyes see color stripes, such as magenta, yellow, and cyan mixed color stripes, which affects the visual experience. Improving the rainbow stripe phenomenon is of great significance to improving the display quality of display panels. Summary of the invention

[0003] At least one embodiment of the present disclosure provides a display panel, which includes a stacked display liquid crystal panel and a light control panel; the display liquid crystal panel includes a plurality of grid lines, the plurality of grid lines include a plurality of first grid lines extending along a first direction and a plurality of second grid lines extending along a second direction, the first direction and the second direction intersect each other, the plurality of first grid lines and the plurality of second grid lines define a plurality of color sub-pixel units arranged in an array; the light control panel is configured to allow backlight to be incident on the display liquid crystal panel through it, and includes a plurality of signal lines; the plurality of signal lines include a plurality of first signal lines extending along the first direction and a plurality of second signal lines extending along the second direction, the plurality of first signal lines and the plurality of second signal lines define a plurality of light control units arranged in an array; N of the color sub-pixel units arranged continuously along the first direction constitute a pixel unit, N is a positive integer; the N color sub-pixel units respectively display different colors; along the first direction, the maximum length of one of the light control units is m times the maximum length of one of the pixel units, m is a non-integer.

[0004] For example, in a display panel provided in an embodiment of the present disclosure, 2.00129 <m<2.00157。

[0005] For example, in a display panel provided by an embodiment of the present disclosure, m=2.00143.

[0006] For example, in the display panel provided in an embodiment of the present disclosure, the size of the display panel is 65 inches, the resolution of the display panel is 4K, and along the first direction, the maximum length of one light control unit is 744.0 μm-744.7 μm.

[0007] For example, in the display panel provided by an embodiment of the present disclosure, along the first direction, the maximum length of one light control unit is 744.55 μm.

[0008] For example, in the display panel provided in an embodiment of the present disclosure, the size of the display panel is 75 inches, the resolution of the display panel is 4K, and along the first direction, the maximum length of one light control unit is 859.5 μm-856.0 μm.

[0009] For example, in the display panel provided by an embodiment of the present disclosure, along the first direction, the maximum length of one light control unit is 859.85 μm.

[0010] For example, in the display panel provided by an embodiment of the present disclosure, along the second direction, the maximum width of one of the light control units is n times the maximum width of one of the pixel units; n is a positive integer.

[0011] For example, in a display panel provided by an embodiment of the present disclosure, the display liquid crystal panel includes: a first substrate and a second substrate; the second substrate is opposite to the first substrate, and is located on a side of the first substrate away from the light control panel; the light control panel includes a third substrate and a fourth substrate; the fourth substrate is located on a side of the third substrate away from the light control panel; the distance between the first surface of the first substrate away from the light control panel and the first surface of the third substrate away from the display liquid crystal panel is less than or equal to 1.7 mm.

[0012] For example, in the display panel provided by an embodiment of the present disclosure, the first base substrate and the third base substrate are an integrated structure, the integrated structure constitutes a common substrate, and the display liquid crystal panel and the light control panel share the common substrate.

[0013] For example, the display panel provided in one embodiment of the present disclosure further includes an adhesive layer and a first polarizer. The adhesive layer is located between the first substrate and the third substrate to bond the first substrate and the third substrate and to prevent an air layer from existing between the first substrate and the third substrate; the first polarizer is located on the first surface of the third substrate away from the display liquid crystal panel, or on the first surface of the first substrate away from the light control panel; the distance between the first surface of the first substrate and the first surface of the third substrate is equal to the sum of the thickness of the first substrate in a direction perpendicular to its first surface, the thickness of the third substrate in a direction perpendicular to the first surface of the first substrate, and the thickness of the adhesive layer in a direction perpendicular to the first surface of the first substrate.

[0014] For example, in a display panel provided in an embodiment of the present disclosure, the refractive index of the adhesive layer is greater than the refractive index of the first base substrate and greater than the refractive index of the third base substrate.

[0015] For example, in a display panel provided in an embodiment of the present disclosure, the difference between the refractive index of the adhesive layer and the refractive index of the first base substrate is less than 0.3, and the difference between the refractive index of the adhesive layer and the refractive index of the third base substrate is less than 0.3.

[0016] For example, in the display panel provided by an embodiment of the present disclosure, the line width of each of the plurality of first signal lines and the line width of each of the plurality of second signal lines are less than or equal to 30 μm.

[0017] For example, in the display panel provided by an embodiment of the present disclosure, the light control panel further includes a first black matrix covering the plurality of first signal lines and the plurality of second signal lines, and a line width of the first black matrix is ​​less than or equal to 30 μm.

[0018] For example, in the display panel provided by an embodiment of the present disclosure, the light control panel is a light control liquid crystal panel; the first signal line is a first gate line, and the second signal line is a first data line; the first gate line and the first data line are configured to respectively provide a first gate signal and a first data signal for driving the rotation of liquid crystal molecules in a light control unit of the light control liquid crystal panel; the first grid line is a second gate line, and the second grid line is a second data line; the second gate line and the second data line are configured to respectively provide a second gate signal and a second data signal for driving the rotation of liquid crystal molecules in a color sub-pixel unit of the display liquid crystal panel, or the first grid line and the second grid line are constructed as a second black matrix.

[0019] For example, the display panel provided by one embodiment of the present disclosure also includes an isotropic diffusion film (IDF), wherein the isotropic diffusion film is configured so that light adjusted by the light control panel enters the isotropic diffusion film and is isotropically diffused before being incident on the display liquid crystal panel.

[0020] For example, the display panel provided in an embodiment of the present disclosure further includes a second polarizer and a third polarizer. The second polarizer is located on the second substrate; the third polarizer is located on the fourth substrate; and the haze of at least one of the first polarizer and the second polarizer is 0% to 55%.

[0021] For example, in a display panel provided by an embodiment of the present disclosure, the haze of at least one of the first polarizer and the second polarizer is 25% to 55%.

[0022] For example, in a display panel provided by an embodiment of the present disclosure, at least part of the plurality of first signal lines are zigzag lines and at least part of the plurality of second signal lines are zigzag lines; or, at least part of the plurality of first signal lines are zigzag lines and the plurality of second signal lines are all straight lines.

[0023] At least one embodiment of the present disclosure further provides a display device, which includes any one of the display panels provided in the embodiments of the present disclosure, and a backlight unit; the backlight unit is located on a side of the light control panel away from the display liquid crystal panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0025] Figure 1A and Figure 1B A schematic diagram of local dimming is shown;

[0026] Figure 2A A schematic cross-sectional view of a display panel provided in one embodiment of the present disclosure;

[0027] Figure 2B A schematic cross-sectional view of another display panel provided by an embodiment of the present disclosure;

[0028] Figure 2C A schematic cross-sectional view of another display panel provided in an embodiment of the present disclosure;

[0029] Figure 2D A cross-sectional schematic diagram of another display panel provided by an embodiment of the present disclosure;

[0030] Figure 3A for Figure 2A A schematic plan view of a liquid crystal panel of the display panel;

[0031] Figure 3B for Figure 2A A plan view schematic diagram of a light control panel of a display panel in FIG. 1;

[0032] Figure 3C A first plan view schematic diagram of a display panel provided in an embodiment of the present disclosure;

[0033] Figure 3D for Figure 3C A partial enlarged schematic diagram of

[0034] Figure 4 A second schematic plan view of a display panel provided in accordance with an embodiment of the present disclosure;

[0035] Figure 5A for Figure 2A A second plan view of the light control panel of the display panel;

[0036] Figure 5B A third schematic plan view of a display panel provided in accordance with an embodiment of the present disclosure;

[0037] Figure 6 A schematic diagram of a display device provided in an embodiment of the present disclosure;

[0038] Figure 7 A cross-sectional schematic diagram of a display device provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The drawings in this disclosure are not drawn strictly according to the actual scale, and the number of pixel units and light control units in the display panel is not limited to the number shown in the drawings. The specific size and number of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams of the structures.

[0042] The display liquid crystal panel includes a liquid crystal panel and a backlight unit. Generally, the liquid crystal panel includes an array substrate and an opposing substrate (such as a color film substrate) arranged opposite to each other to form a liquid crystal box, and a liquid crystal layer is filled between the array substrate and the opposing substrate in the liquid crystal box; a first polarizer is arranged on the array substrate, and a second polarizer is arranged on the opposing substrate, and the polarization directions of the first polarizer and the second polarizer are perpendicular to each other. The backlight unit is arranged on the non-display side of the liquid crystal panel and is used to provide a planar light source for the liquid crystal panel. The liquid crystal molecules of the liquid crystal layer are twisted under the action of the driving electric field formed between the pixel electrode arranged on the array substrate and the common electrode arranged on the array substrate or the common electrode arranged on the opposing substrate to control the polarization direction of the light, and the transmittance of the light is controlled in cooperation with the first polarizer and the second polarizer, so as to realize grayscale display. The backlight unit can be a direct-type backlight unit or an edge-entry backlight unit. A direct-type backlight unit includes a plurality of point light sources (such as LEDs) arranged in parallel and a diffusion plate, and the light emitted by these point light sources is uniformized by the diffusion plate and then incident on the liquid crystal panel for display.

[0043] For example, for display LCD panels, the direct backlight unit can be controlled by combining local dimming technology (LD), thereby improving the display quality of the display panel. Local dimming technology can not only reduce the power consumption of the display panel, but also realize dynamic dimming of the backlight area, greatly improving the contrast of the displayed image and improving the display quality of the display panel.

[0044] The local dimming technology can divide the entire backlight unit into multiple independently drivable backlight blocks, each of which includes one or more LEDs. The driving current of the LEDs in the backlight blocks corresponding to the different parts of the display screen is automatically adjusted according to the grayscale that needs to be displayed in different parts of the display screen, so as to achieve independent adjustment of the brightness of each block in the backlight unit, thereby improving the contrast of the display screen. For example, in an exemplary direct-type backlight unit, the regional division diagram of the LED light source in the entire backplane is as follows: Figure 1A As shown in the figure, the small square represents an LED unit, and the multiple areas separated by dotted lines represent multiple backlight areas. Each backlight area includes one or more LED units and can be controlled independently of other backlight areas. For example, the LEDs in each backlight area are linked, that is, the current passing through the LEDs in the same backlight area is consistent.

[0045] Local dimming technology can adjust the brightness of the corresponding backlight partition according to the grayscale of the picture content displayed by the LCD panel. Figure 1B FIG. 1 is a schematic diagram showing a display image after local dimming processing and the display brightness of the corresponding backlight partition. Figure 1BAs shown, the backlight unit includes a plurality of rectangular backlight areas arranged in an array. The local dimming technology can adjust the brightness of the corresponding backlight partition according to the grayscale of the picture content displayed by the liquid crystal panel. For the part with higher picture brightness (grayscale), the brightness of the corresponding backlight partition is also high, and for the part with lower picture brightness, the brightness of the corresponding backlight partition is also low, thereby achieving the purpose of reducing backlight power consumption, improving the contrast of the display picture, and enhancing the display quality.

[0046] However, the above-mentioned local dimming technology is applicable to a direct-type backlight unit, and the LED as a light source is, for example, evenly distributed over the entire backplane. In order to use the local dimming technology in, for example, an edge-type backlight unit, it is necessary to add a light control panel between the display liquid crystal panel and the edge-type backlight unit. The light control panel can control the transmittance in a predetermined area. For a portion with higher brightness (grayscale) of the picture, the transmittance of the corresponding area of ​​the light control panel is also high, allowing more light from the backlight unit to pass through. For a portion with lower brightness of the picture, the transmittance of the corresponding area of ​​the light control panel is also low, allowing less light from the backlight unit to pass through, thereby achieving the purpose of improving the contrast of the displayed picture and enhancing the display quality. In addition, when a direct-type backlight unit is formed directly on a direct-type backlight source, it is difficult to achieve a higher density (the number of backlight units per unit area) and precision in the division of the backlight unit. When the division density and precision of the light control unit are required to be high, this requirement can be achieved by using the light control panel, and the manufacturing process of the light control panel is easy to implement.

[0047] For example, each sub-pixel unit includes a color film of a different color, and the light from the backlight source enters the display liquid crystal panel through the light control panel, and is emitted after passing through the color film to achieve color display. Since the backlight passes through multiple film layers (such as the substrate, the bonding layer for bonding the display liquid crystal panel and the light control panel, etc.) in the process of being transmitted from the light input side to the light output side, it will be refracted, thereby changing the light output position. In the entire display area, the light emitted through the color films of different colors is not uniform; and, since the human eye is a fixed point in actual observation, the position of the display panel closer to the human eye and the position farther from the human eye have a viewing angle difference, so that different areas of the display panel have uneven color mixing, that is, rainbow patterns appear. For example, the colors of the rainbow pattern present three mixed color stripes of magenta, yellow, and cyan.

[0048] At least one embodiment of the present disclosure provides a display panel, which includes a stacked display liquid crystal panel and a light control panel; the display liquid crystal panel includes a plurality of grid lines, the plurality of grid lines include a plurality of first grid lines extending along a first direction and a plurality of second grid lines extending along a second direction, the first direction and the second direction intersect each other, the plurality of first grid lines and the plurality of second grid lines define a plurality of color sub-pixel units arranged in an array; the light control panel is configured to allow backlight to be incident on the display liquid crystal panel through it, and includes a plurality of signal lines; the plurality of signal lines include a plurality of first signal lines extending along the first direction and a plurality of second signal lines extending along the second direction, the plurality of first signal lines and the plurality of second signal lines define a plurality of light control units arranged in an array; N of the color sub-pixel units arranged continuously along the first direction constitute a pixel unit, N is a positive integer; the N color sub-pixel units respectively display different colors; along the first direction, the maximum length of one of the light control units is m times the maximum length of one of the pixel units, m is a non-integer.

[0049] For example, Figure 3A for Figure 2A A schematic plan view of a liquid crystal panel of a display panel in FIG. Figure 3B for Figure 2A A plan view of a light control panel of a display panel, Figure 3C A first plan view of a display panel provided in accordance with an embodiment of the present disclosure is shown. Figure 2A For along Figure 3C The cross-sectional view of the I-I' line in FIG. Figure 2A , Figures 3A-3C As shown, the display panel 10 includes a stacked display liquid crystal panel 1 and a light control panel 2. The light control panel 2 is configured to allow backlight to be incident on the display liquid crystal panel 1 through it. The backlight refers to the light from the backlight source. The display liquid crystal panel 1 is used to realize the display function, and the light control panel 2 is used to control the direction or strength of the backlight incident on the display liquid crystal panel 1 according to the needs, for example, to realize the needs of switching between narrow viewing angle and wide viewing angle, to control the different luminous intensity of each position of the display panel, etc. For example, the backlight can come from a direct backlight source or an edge backlight source.

[0050] refer to Figure 3A and Figure 3C, the display liquid crystal panel 1 includes a plurality of grid lines 3, the plurality of grid lines 3 include a plurality of first grid lines 31 extending along a first direction and a plurality of second grid lines 32 extending along a second direction, and the first direction and the second direction intersect each other. For example, the first direction is perpendicular to the second direction. The plurality of first grid lines 31 and the plurality of second grid lines 32 define a plurality of color sub-pixel units arranged in an array. For example, the plurality of first grid lines 31 and the plurality of second grid lines 32 are all straight lines. N color sub-pixel units arranged continuously along the first direction constitute a pixel unit 6, where N is a positive integer. For example, as Figure 3A As shown, N=3, and the three sub-pixel units in a pixel unit 6 are, for example, a first sub-pixel unit 61, a second sub-pixel unit 62, and a third sub-pixel unit 63. For example, the N sub-pixel units in a pixel unit 6 respectively emit different colored lights, that is, they respectively display different colors, thereby realizing color display. For example, the first sub-pixel unit 61, the second sub-pixel unit 62, and the third sub-pixel unit 63 respectively emit red light, green light, and blue light. In another embodiment, four sub-pixel units arranged continuously along the first direction may constitute a pixel unit, for example, the four color sub-pixel units respectively emit red light, green light, blue light, and white light. Of course, the sub-pixel units included in a pixel unit 6 are not limited to the above-mentioned cases, and the sub-pixel units included in a pixel unit 6 can be designed as needed.

[0051] refer to Figure 3B and Figure 3C , the light control panel 2 includes a plurality of signal lines 4, the plurality of signal lines 4 include a plurality of first signal lines 41 extending along a first direction and a plurality of second signal lines 42 extending along a second direction, the plurality of first signal lines 41 and the plurality of second signal lines 42 define a plurality of light control units 7 arranged in an array. For example, the plurality of grid lines 3 of the display liquid crystal panel 1 are straight lines extending along the first direction and the second direction intersecting each other, for example, the planar shapes of the plurality of sub-pixel units defined by these mutually intersecting grid lines 3 are all rectangular. At least part of the plurality of signal lines 4 are zigzag lines, so that the planar shape of the light control unit 7 is different from the planar shape of the sub-pixel unit, and the arrangement pattern is different. For example, the planar shape of the light control unit 7 is not a rectangle, for example Figure 3B and, for example, the orthographic projection of the signal line 4 on the display liquid crystal panel 1 (referring to the orthographic projection on the surface of the display liquid crystal panel 1 facing the light control panel 2) in the first direction or the second direction intersects with the grid line 3, and the signal line 4 does not have the same or similar pattern as the grid line 3, so that the human eye cannot feel the moiré pattern, thereby achieving the effect of eliminating or improving the moiré pattern. Figure 3CAs shown, in the display panel 10 provided in the embodiment of the present application, a plurality of pixel units 6 and a plurality of light control units 7 are respectively arranged in an array. The sizes and shapes of the plurality of pixel units 6 are the same, and the sizes and shapes of the plurality of light control units 7 are the same. For example, along the first direction, the maximum length L1 of one light control unit 7 is m times the maximum length of one pixel unit 6, where m is a non-integer, so as to achieve the effect of improving the rainbow pattern phenomenon of the display panel.

[0052] Figure 3D is Figure 3C a partial enlarged schematic diagram. For example, as Figure 3D shown, the planar graph of one light control unit 7 is an irregular graph. As Figure 3D shown, the graph with vertices A1, A2, M, C, F, D, N, and B2 constitutes the planar graph of one light control unit 7. It should be noted that in the present disclosure, the maximum length of one light control unit along the first direction means: the maximum value among all the length values of one light control unit 7 in the first direction. In this embodiment, along the second direction, the length values of one light control unit 7 in the first direction are different, and the maximum value among these length values is the above-mentioned maximum length L1 of one light control unit 7 along the first direction.

[0053] For example, in the Figure 3C embodiment shown, 2.00129 < m < 2.00157. At this time, a better effect of improving the rainbow pattern phenomenon can be achieved. For example, m = 2.00143. It has been experimentally proven that within the range of 2.00129 < m < 2.00157, when m = 2.00143, the effect of improving the rainbow pattern is the best.

[0054] For example, in one embodiment, the size of the display panel 10 is 65 inches, that is, the plane figure of the display panel 10 is a rectangle, and the length of the diagonal of the rectangle is 65 inches. For example, the length of the display panel 10 along the first direction is 190.5 cm. In addition, the resolution of the display panel 10 is 4K, and the number of pixels is 4096×2160 or 4096×3112 or 3840×2160, etc. Along the first direction, the maximum length L1 of a light control unit 7 is 744.15μm-744.7μm. At this time, a better effect of improving the rainbow pattern phenomenon can be achieved. For example, along the first direction, the maximum length L1 of a light control unit 7 is 744.55μm. Experiments have shown that within the range of 744.15μm-744.7μm, when the maximum length L1 is 744.55μm, the effect of improving the rainbow pattern is best. Table 1 is a single comparative test result data table under different conditions of L1. The gray and white lines in Table 1 are the results of converting the rainbow lines presented by the display panel into grayscale images. The more obvious the gray and white lines are, the more obvious the rainbow lines are. Referring to Table 1 below, when the maximum length L1 of a light control unit 7 is in the range of 744.15μm-744.7μm, the effect of improving the rainbow lines is better. And, as can be seen from Table 1, when L1=744.55μm, the effect of improving the rainbow lines is the best.

[0055] Table 1 Data table of the influence of the maximum length L1 of a light control unit on the rainbow pattern

[0056]

[0057] For example, in another embodiment, the size of the display panel 10 is 75 inches, that is, the plane figure of the display panel 10 is a rectangle, and the length of the diagonal of the rectangle is 75 inches. For example, the length of the display panel 10 along the first direction is 190.5 cm. In addition, the resolution of the display panel 10 is 4K, and the number of pixel units is 4096×2160 or 4096×3112 or 3840×2160, etc. The pixel unit is composed of a plurality of color sub-pixel units. Along the first direction, the maximum length L1 of a light control unit 7 is 859.5μm-856.0μm. At this time, a better effect of improving the rainbow pattern phenomenon can be achieved. For example, along the first direction, the maximum length L1 of a light control unit 7 is 859.85μm. It has been proved by experiments that within the range of 859.5μm-856.0μm, when the maximum length L1 is 859.85μm, the effect of improving the rainbow pattern is best.

[0058] For example, along the second direction, the maximum width L2 of a light control unit 7 is n times the maximum width of a pixel unit, where n is a positive integer. That is, the maximum width L2 of a light control unit 7 in the second direction is equal to the sum of the maximum widths of n consecutively arranged pixel units 6, so that the rainbow pattern can be improved while the arrangement of multiple light control units 7 is regular and easy to manufacture.

[0059] For example, in Figure 3C In the display panel 10 shown, n=4. For another example, Figure 4 A second schematic plan view of a display panel provided in accordance with an embodiment of the present disclosure, in Figure 4 In the display panel 10 shown, n=7.

[0060] For example, in this embodiment, the shape of the light control unit 7 is an irregular shape. In other embodiments, the shape of the light control unit 7 may also be a regular shape, such as a rectangle.

[0061] It should be noted that the maximum width in the present disclosure refers to: the maximum width along the axis of the second direction ( Figure 3C The distance between a first end of a light control unit and a second end of the light control unit that is farthest from the first end on the Y axis. Figure 3C In the figure, the maximum width of a light control unit 7 in the second direction is: on the axis of the second direction (the Y axis in the figure), the distance between the first end A1 of the light control unit 7 and the second end C of the light control unit farthest from the first end A1.

[0062] For example, Figure 2AAs shown, the display liquid crystal panel 1 includes a first substrate 11, a second substrate 12 and a display liquid crystal layer 13. The second substrate 12 is opposite to the first substrate 11 and is located on the side of the first substrate 11 away from the light control panel 2; the display liquid crystal layer 13 is located between the first substrate 11 and the second substrate 12. For example, the light control panel 2 is a liquid crystal light control panel, which includes a third substrate 23, a fourth substrate 24 and a light control liquid crystal layer 25. The fourth substrate 24 is located on the side of the third substrate 23 away from the light control panel 2, and the light control liquid crystal layer 25 is located between the third substrate 23 and the fourth substrate 24. The distance d between the first surface 111 of the first substrate 11 away from the light control panel 2 and the first surface 231 of the third substrate 23 away from the display liquid crystal panel 1 is less than or equal to 1.7 mm. It is predicted by analysis and proved by experiments that the rainbow pattern can be weakened by reducing the distance. Table 2 is a single comparison test result data table under different conditions of d. The gray and white lines in Table 2 are the results of converting the rainbow lines presented by the display panel into grayscale images. The more obvious the gray and white lines are, the more obvious the rainbow lines are. Referring to Table 2 below, as the distance d decreases, the effect of improving the rainbow lines gradually becomes better; when d is less than or equal to 1.7 mm, the rainbow line improvement effect is better.

[0063] Table 2 Data table of the influence of distance d on rainbow pattern

[0064]

[0065] For example, the display panel 10 further includes an adhesive layer 12 and a first polarizer 101. The adhesive layer 12 is located between the first substrate 11 and the third substrate 23 to bond the first substrate 11 and the third substrate 23 and to prevent an air layer from existing between the first substrate 11 and the third substrate 23; the first polarizer 101 is located on the first surface 231 of the third substrate 23 away from the display liquid crystal panel 1. At this time, the distance d between the first surface 111 of the first substrate 11 and the first surface 231 of the third substrate 23 is equal to the sum of the thickness of the first substrate 11 in a direction perpendicular to its first surface 111, the thickness of the third substrate 23 in a direction perpendicular to the first surface 111 of the first substrate 11, and the thickness of the adhesive layer 12 in a direction perpendicular to the first surface 111 of the first substrate 11. In this embodiment, since the first polarizer 12 is located on the first surface 111 of the first substrate 11, the above distance d can be reduced, thereby better improving the rainbow phenomenon. For example, the first base substrate 11 has a thickness of 0.5 mm in a direction perpendicular to the first surface 111 thereof, the third base substrate 23 has a thickness of 0.5 mm in a direction perpendicular to the first surface 111 of the first base substrate 11, and the adhesive layer 12 has a thickness of 0.5 mm in a direction perpendicular to the first surface 111 of the first base substrate 11. For example, the first base substrate 11 and the third base substrate 23 may be ultra-thin substrates.

[0066] For example, Figure 2B A cross-sectional schematic diagram of another display panel provided by an embodiment of the present disclosure. Figure 2B The display panel 10 shown is Figure 2A The difference of the display panel 10 shown is that the first polarizer 101 is located on the first surface 111 of the first base substrate 11 away from the light control panel 2. This embodiment can also achieve the technical effect of reducing the above distance d, thereby better improving the rainbow pattern phenomenon. Figure 2B The other structures of the display panel shown in FIG. Figure 2A The same as shown will not be repeated here.

[0067] For example, Figure 2C A cross-sectional schematic diagram of another display panel provided by an embodiment of the present disclosure. Figure 2C The display panel 10 shown is Figure 2AThe difference of the display panel 10 shown is that the first base substrate 11 and the third base substrate 23 are an integrated structure, and the integrated structure constitutes a common substrate 110, and the display liquid crystal panel 1 and the light control panel 2 share the common substrate 110. The integrated structure means that the first base substrate 11 and the third base substrate 23 are integrated into one substrate, that is, the common substrate 110. In this way, the display panel 10 includes three base substrates, which can reduce the above distance d to achieve a better effect of improving the rainbow pattern. Figure 2C The other structures of the display panel shown in FIG. Figure 2A The same as shown will not be repeated here.

[0068] In at least one implementation, for example, Figure 2A As shown, the light ( Figure 2A The light 1 and light 2 in the figure pass through the third base substrate 23, the adhesive layer 12 and the first base substrate 11 in sequence, and are first refracted at the interface between the third base substrate 23 and the adhesive layer 12, and then refracted for the second time at the interface between the adhesive layer 12 and the third base substrate 23. In this process, if the above light is in the horizontal direction ( Figure 2A ) is large, the rainbow pattern phenomenon is more serious, affecting the user experience. For example, the refractive index of the adhesive layer 12 is greater than the refractive index of the first base substrate 11 and greater than the refractive index of the third base substrate 23. Therefore, under the condition that the thickness of the first base substrate 11 in the direction perpendicular to its first surface 111, the thickness of the third base substrate 23 in the direction perpendicular to its first surface 111, and the thickness of the adhesive layer 12 in the direction perpendicular to its first surface 111 are constant, the light adjusted by the light control panel 2 is reduced in the normal direction (dashed line in the light path diagram) during the above propagation path to compensate for the horizontal displacement of the light emission position during the above propagation path. Thereby, the degree of displacement and unevenness of the light emitted from the sub-pixel units of different colors can be reduced to weaken the rainbow pattern.

[0069] For example, the difference between the refractive index of the adhesive layer 12 and the refractive index of the first base substrate 11 is less than 0.3, and the difference between the refractive index of the adhesive layer 12 and the refractive index of the third base substrate 23 is less than 0.3. For example, the first base substrate 11 and the third base substrate 23 are both glass substrates with a refractive index of 1.4 to 1.5, and the refractive index of the adhesive layer 12 is less than 1.8. The material of the adhesive layer 12 includes organic materials, such as resins, and those skilled in the art can select as needed. It has been verified by experiments that the difference is too large or too small, which is not conducive to improving the rainbow pattern. Within the above difference range, a better effect of improving the rainbow pattern can be obtained. Table 3 is a single comparative test result data table under the condition that the refractive index N of the first base substrate 11 and the third base substrate 23 are both 1.5 and the refractive index N of the adhesive layer 12 is different. The gray and white lines in Table 3 are the results of the rainbow pattern presented by the display panel after being converted into a grayscale image. The more obvious the gray and white lines are, the more obvious the rainbow pattern is. Referring to the following Table 3, the effect of improving the rainbow pattern when N>1.5 is better than that when N<1.5, that is, when the refractive index of the bonding layer 12 is greater than the refractive index of the first base substrate 11 and greater than the refractive index of the third base substrate 23, the effect of improving the moiré pattern is better; when N>1.8, the effect of improving the rainbow pattern begins to decline. Therefore, when the difference between the refractive index of the bonding layer 12 and the refractive index of the first base substrate 11 is less than 0.3 and the difference between the refractive index of the bonding layer 12 and the refractive index of the third base substrate 23 is less than 0.3, the effect of improving the rainbow pattern is more ideal.

[0070] Table 3 Data table of the effect of the refractive index N of the adhesive layer on the rainbow pattern

[0071]

[0072] For example, the line width of each of the plurality of first signal lines 41 and the line width of each of the plurality of second signal lines 42 is less than or equal to 30 μm. Experiments show that within a certain range, the smaller the line width of the first signal line and the second signal line, the weaker the rainbow pattern. When the line width of each of the plurality of first signal lines 41 and the line width of each of the plurality of second signal lines 42 is less than or equal to 30 μm, the rainbow pattern phenomenon of the display panel 10 is significantly improved.

[0073] In at least one embodiment, for example, Figure 2CAs shown, the light control panel 10 also includes a first black matrix 91 covering the plurality of first signal lines 41 and the plurality of second signal lines 42. For example, the first black matrix 91 is located on the first surface 1101 of the common substrate 110 away from the display liquid crystal panel 1, that is, the orthographic projections of the plurality of first signal lines 41 and the plurality of second signal lines 42 on the first surface 1101 are located within the orthographic projections of the first black matrix 91 on the first surface 1101. For example, the line width of the first black matrix 91 is less than or equal to 30 μm to achieve the effect of improving the rainbow pattern phenomenon. For example, the pattern of the first black matrix 91 is the same as the pattern of the plurality of first signal lines 41 and the plurality of second signal lines 42, and the line width is the same, so as to improve the light transmittance of the display panel 10 while improving the rainbow pattern.

[0074] Table 4 is a single comparison test result data table under different conditions of the line width D1 of the first signal line and the second signal line (or the line width of the black matrix). The gray and white lines in Table 4 are the results of the rainbow lines presented by the display panel after being converted into a grayscale image. The more obvious the gray and white lines are, the more obvious the rainbow lines are. Referring to the following Table 4, the effect of improving the rainbow lines is good when the line width D1 of the first signal line and the second signal line (or the line width of the black matrix) is less than or equal to 30μm. The effect of improving the rainbow lines is better when the line width D1 of the first signal line and the second signal line (or the line width of the black matrix) is greater than 30μm. Therefore, when the line width D2 of the first signal line and the second signal line (or the line width of the black matrix) is less than or equal to 30μm, the effect of improving the rainbow lines is better. In addition, the display liquid crystal panel and the light-controlled liquid crystal panel also include PS columns for maintaining the thickness of the liquid crystal box, and the line width D2 of the first signal line and the second signal line (or the line width of the black matrix) corresponding to the position of the PS column is greater than or equal to D1. According to Table 4, when D1 is less than or equal to 30 μm, D2 is also less than or equal to 30 μm, and the effect of improving rainbow patterns is better.

[0075] Table 4 Data table of the effect of the refractive index N of the adhesive layer on the rainbow pattern

[0076]

[0077] For example, the first signal line 41 is a first gate line, the second signal line 42 is a first data line, and the first signal line 41 is insulated from the second signal line 42, for example, an insulating layer is provided between the first signal line 41 and the second signal line to insulate the two. The first gate line and the first data line are configured to distribute and provide a second gate signal and a second data signal for driving the rotation of liquid crystal molecules (not shown) in the light control unit 7 of the light control panel 2, so as to achieve the adjustment of the light control panel 2 to the exit angle or intensity of the backlight. For another example, in another embodiment of the present disclosure, the first signal line 41 is a first data line, and the second signal line 42 is a first gate line. More specifically, each light control unit 7 includes a thin film transistor (as a switching element), a pixel electrode, and a common electrode; the gate of the thin film transistor is connected to the first gate line to receive a gate signal, the first electrode (e.g., source) of the thin film transistor is connected to the first data line to receive a data signal, and the first electrode (e.g., drain) of the thin film transistor is connected to the pixel electrode to charge the pixel electrode when it is in the on state; the common electrode and the pixel electrode form a liquid crystal capacitor together with the liquid crystal layer, and when the pixel electrode is charged, an electric field is formed between the common electrode and the pixel electrode to control the rotation of the liquid crystal molecules in the liquid crystal layer. Depending on whether the light control panel is a vertical electric field type or a horizontal electric field type, the common electrode and the pixel electrode can be located on the same substrate and arranged adjacent to each other, or located on different substrates and facing each other.

[0078] In one embodiment, the grid lines 3 may include a second gate line and a second data line, for example, the first grid line 31 is a second gate line, the second grid line 32 is a second gate line, and the first grid line 31 is insulated from the second grid line 32. The second gate line and the second data line are configured to respectively provide a second gate signal and a second data signal for driving the rotation of liquid crystal molecules (not shown) in a sub-pixel unit of the display liquid crystal panel 1. Alternatively, in another embodiment, the grid lines 3 may also include a second black matrix for preventing crosstalk between color lights of adjacent sub-pixel units, the second black matrix being located on the second base substrate 12 and defining a plurality of color sub-pixel units. The second black matrix includes a first black matrix strip extending along a first direction and a second black matrix strip extending along a second direction. For example, the first grid lines 31 and the second grid lines 32 are respectively constructed as first black matrix strips and second black matrix strips; the first grid lines 31 are in a direction perpendicular to the display surface of the display panel, the first black matrix strips cover the first signal lines (e.g., first gate lines) extending along the first direction, and for example, have the same profile as the first signal lines, and the second black matrix strips cover the second signal lines (e.g., first data lines) extending along the second direction, that is, the orthographic projection of the first signal line on the surface of the display liquid crystal panel 1 facing the light control panel 2 is located within the orthographic projection of the first black matrix strip on the surface of the display liquid crystal panel 1 facing the light control panel 2. For example, the first black matrix strip has the same profile as the second signal line, that is, the orthographic projection of the first signal line on the surface of the display liquid crystal panel 1 facing the light control panel 2 coincides with the orthographic projection of the first black matrix strip on the surface of the display liquid crystal panel 1 facing the light control panel 2. More specifically, each pixel unit 7 includes a thin film transistor (as a switching element), a pixel electrode, and a common electrode; the gate of the thin film transistor is connected to the second gate line to receive a gate signal, the first electrode (e.g., source) of the thin film transistor is connected to the second data line to receive a data signal, and the first electrode (e.g., drain) of the thin film transistor is connected to the pixel electrode to charge the pixel electrode when it is in the on state; the common electrode and the pixel electrode form a liquid crystal capacitor together with the liquid crystal layer, and when the pixel electrode is charged, an electric field is formed between the common electrode and the pixel electrode to control the rotation of the liquid crystal molecules in the liquid crystal layer. Depending on whether the display liquid crystal panel is a vertical electric field type or a horizontal electric field type, the common electrode and the pixel electrode can be located on the same substrate and arranged adjacent to each other, or located on different substrates and facing each other. The display liquid crystal panel also includes a color filter for color display.

[0079] It should be noted that the drawings of the embodiments of the present disclosure only show structures directly related to the core idea of ​​the present invention. As for other structures of the display liquid crystal panel 1, such as a display driving circuit, a color film, and an interlayer insulating layer, and other structures of the light control panel 2, such as a light control driving circuit, those skilled in the art may refer to conventional technologies.

[0080] For example, in some embodiments, at least part of the plurality of first signal lines is a zigzag line, and at least part of the plurality of second signal lines is a zigzag line. It should be noted that at least part of the plurality of first signal lines is a zigzag line, including the case where at least part of the first signal lines is a zigzag line, and also including the case where part of a signal line is a zigzag line. The same is true for the explanation that at least part of the plurality of second signal lines is a zigzag line.

[0081] For example, in Figures 3A-3C In the illustrated embodiment, the plurality of first signal lines 41 are all zigzag lines, and the plurality of second signal lines 42 are all zigzag lines. The plurality of pixel units 6 and the plurality of light control units 7 are arranged in arrays, respectively, and have respective arrangement periods in the first direction and the second direction. For example, the first signal line 41 is a zigzag line and includes a plurality of first zigzag units 5 arranged in a continuous period, and one first zigzag unit 5 corresponds to one light control unit 7, that is, the first zigzag unit 5 crosses one light control unit 7 in the first direction. And each first zigzag unit 5 includes a first part 51 and a second part 52 arranged in sequence along the first direction, the first part 51 includes a first end A1 connected to the second part 52, and the second part 52 includes a first end B1 connected to the first part 51. That is, the first end A1 of the first part 51 is connected to the first end B1 of the second part 52, and the connection point of the first part 51 and the second part 52 is A1 (B1), and points A1 and B1 coincide. It should be noted that the above continuous periodic arrangement means that the pattern of each first fold line unit 5 is the same, and two adjacent first fold line units 5 are connected to each other and continuously distributed, and the second end A2 of the first part 51 of a first fold line unit 5 is connected to the second end B2 of the second part 52 of the adjacent first fold line unit 5, for example, two adjacent first fold line units 5 are connected at point A2 and point B2. This fold line routing pattern of the first signal line 41 can achieve a better effect of eliminating or improving moiré patterns, and the periodic arrangement structure is simple and easy to manufacture.

[0082] For example, Figure 3D As shown, because the above m is a non-integer, the orthographic projection of the intersection points of at least part of the first signal line 41 and at least part of the second signal line 42 (for example, point A2, point B2) on the surface of the display liquid crystal panel 1 facing the light control panel 2 does not overlap with the orthographic projection of the second grid line 32 on the surface of the display liquid crystal panel 1 facing the light control panel 2; the orthographic projection of the connection point A1 (B1) of the first end A1 of the first part 51 of at least part of the first fold line units 5 and the first end B1 of the second part 52 on the surface of the display liquid crystal panel 1 facing the light control panel 2 does not overlap with the orthographic projection of a second grid line 32 on the surface of the display liquid crystal panel 1 facing the light control panel 2.

[0083] For example, Figure 3BAs shown, the first part 51 and the second part 52 of the first fold line unit 5 can be straight line segments, for example, the bending part of the first fold line unit includes a corner; or, in other embodiments, the first part 51 and the second part 52 of the first fold line unit 5 can also be curved segments, for example, the bending part of the first fold line unit does not include a corner but is curved (for example, an arc).

[0084] For example, Figure 3B and Figure 3C As shown, the first part 51 of the first fold line unit 5 has a first angle α with the first direction (i.e., the X-axis), and the second part 52 of the first fold line unit 5 has a second angle β with the first direction, and the first angle α and the second angle β are both 37 to 70°, for example, the first angle α is equal to or not equal to the second angle β.

[0085] For example, Figure 3B and Figure 3C As shown, the second signal line 42 is a zigzag line and includes a plurality of second zigzag units 8 arranged in a periodic manner, and one second zigzag unit 8 can correspond to one of the light control units 7. One second zigzag unit 8 includes a first portion 81 and a second portion 82 arranged in sequence along the second direction, the first portion 81 includes a first end connected to the second portion 82, and the second portion 82 includes a first end connected to the first portion 81. That is, the first end of the first portion 81 of the second zigzag unit 8 is connected to the first end of the second portion 82 of the second zigzag unit, and the connection point is point M. In this way, the second signal line 42 and the first signal line 41 are both zigzag lines, so as to further improve the effect of eliminating moiré while improving the above-mentioned rainbow pattern phenomenon.

[0086] For example, Figure 3C and Figure 3D As shown, the first portion 81 of the second fold line unit 8 has a third angle θ with the second direction, and the second portion 82 of the second fold line unit 8 has a fourth angle γ with the second direction, and the third angle θ and the fourth angle γ are both less than 7°. If the third angle θ and the fourth angle γ are too large, the irregularity of the pattern of the signal line 4 will be significantly increased. If the irregularity of the pattern of the signal line 4 is too large, it is not conducive to eliminating moiré. The third angle θ and the fourth angle γ are both less than 7° to prevent this problem. For example, the third angle θ is equal to or not equal to the fourth angle γ.

[0087] In some embodiments, at least part of the plurality of first signal lines are zigzag lines, and the plurality of second signal lines are straight lines. Figure 5A for Figure 2A Schematic diagram of the light control panel of the display panel 2. Figure 5B FIG3 is a schematic plan view of a display panel provided by an embodiment of the present disclosure. Figure 5A-5BAs shown, the plurality of first signal lines 41 are all folded lines, and the plurality of second signal lines 42 are all straight lines. This solution can also reduce the moiré pattern while improving the rainbow pattern phenomenon.

[0088] Figure 2D FIG. 1 is a cross-sectional schematic diagram of another display panel provided by an embodiment of the present disclosure. Figure 2D As shown, for example, in at least one embodiment of the present disclosure, the display panel 10 further includes an isotropic diffusion film (IDF) 15, and the isotropic diffusion film 15 is configured so that the light adjusted by the light control panel 2 enters the isotropic diffusion film 15 and is isotropically diffused before being incident on the display liquid crystal panel 1. For example, the isotropic diffusion film 15 is located on the first surface 1101 of the common substrate 110 away from the display liquid crystal panel 1, and is located on the side of the first black matrix 91 close to the common substrate 110. The first black matrix 91 can prevent crosstalk between adjacent light control units, so that the isotropic diffusion film 15 is arranged on the side of the first black matrix 91 close to the common substrate 110 to achieve a better light control effect. For example, the isotropic diffusion film 15 is attached to the first surface 1101 of the common substrate 110 away from the display liquid crystal panel 1 through an adhesive layer, and has at least the same profile as the display liquid crystal panel 1. Alternatively, in other embodiments, the isotropic diffusion film 15 may also be located on the second surface 1102 of the common substrate 110 away from the light control panel 2. Alternatively, when the display panel 10 includes Figure 2A In the case of four base substrates shown, the isotropic diffusion film 15 can be located between the first base substrate 11 and the third base substrate 23. The specific position of the isotropic diffusion film 15 is not specifically limited, as long as the light adjusted by the light control panel 2 can enter the isotropic diffusion film 15 and be isotropically diffused before being incident on the display liquid crystal panel 1. In the embodiment of the present disclosure, the isotropic diffusion film 15 can diffuse the light adjusted by the light control panel 2 within a smaller angle range, so that the light emitted from each color sub-pixel unit is relatively uniform, thereby further improving the rainbow pattern, and at the same time, it will not have a significant impact on the direction of the light emitted by the light control panel 1. Figure 2D Other features of the display panel 10 shown but not mentioned are similar to those Figure 2C Same as shown.

[0089] For example, Figure 2AAs shown, the display panel 10 further includes a second polarizer 102 and a third polarizer 103, the second polarizer 102 is located on the second base substrate 12; the third polarizer 103 is located on the fourth base substrate 24, and the haze of at least one of the first polarizer 101 and the second polarizer 102 is 0% to 55%. This can also achieve the effect of improving rainbow patterns. For example, the haze of at least one of the first polarizer 101 and the second polarizer 102 is 25% to 55%, and within this range, the effect of improving rainbow patterns is better.

[0090] At least one embodiment of the present disclosure provides a display device, which includes any display panel provided by the embodiments of the present disclosure.

[0091] For example, Figure 6 A schematic diagram of a display device provided in an embodiment of the present disclosure, such as Figure 6 As shown, the display device 100 includes any display panel 10 provided in the embodiment of the present disclosure. The display device 100 is a liquid crystal display device. For example, the display device can be implemented as the following products: any product or component with a display function, such as a mobile phone, a tablet computer, a display, a laptop computer, an ATM machine, etc. The display device 10 can control the direction or intensity of the backlight incident on the display liquid crystal panel 1, and can achieve the effect of eliminating or improving rainbow lines.

[0092] For example, Figure 7 A cross-sectional schematic diagram of a display device provided in one embodiment of the present disclosure. The display device 100 also includes a backlight unit (backlight source) 16. The backlight unit 16 is located on a side of the light control panel 2 away from the display liquid crystal panel 1, so that the backlight from the backlight unit 9 first enters the light control panel 2, and the light control panel 2 adjusts the exit angle or intensity of the backlight as needed before it enters the display liquid crystal panel 1, for example, to achieve the need for conversion between narrow viewing angle and wide viewing angle, to control the different luminous intensity of each position of the display panel, etc. The backlight unit 16 can be a direct-type backlight unit or an edge-type backlight unit, and the embodiments of the present disclosure are not limited to this.

[0093] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A display panel, comprising a stacked display liquid crystal panel and a light control panel, wherein: The display liquid crystal panel includes a plurality of grid lines, the plurality of grid lines include a plurality of first grid lines extending along a first direction and a plurality of second grid lines extending along a second direction, the first direction and the second direction intersect each other, the plurality of first grid lines and the plurality of second grid lines define a plurality of color sub-pixel units arranged in an array; the plurality of grid lines also include a second black matrix, the second black matrix defines a plurality of color sub-pixel units arranged in an array; The light control panel is configured to allow backlight to be incident on the display liquid crystal panel through the light control panel, and includes a plurality of signal lines; the plurality of signal lines include a plurality of first signal lines extending along the first direction and a plurality of second signal lines extending along the second direction, and the plurality of first signal lines and the plurality of second signal lines define a plurality of light control units arranged in an array; N color sub-pixel units arranged continuously along the first direction constitute a pixel unit, where N is a positive integer; the N color sub-pixel units display different colors respectively; Along the first direction, the maximum length of one of the light control units is m times the maximum length of one of the pixel units, where m is a non-integer; 2.00129<m<2.00157。 2. The display panel according to claim 1, wherein: m＝2.00143。 3. The display panel according to claim 1 or 2, wherein: The size of the display panel is 65 inches, the resolution of the display panel is 4K, and along the first direction, the maximum length of one light control unit is 744.0 μm-744.7 μm.

4. The display panel according to claim 3, wherein: Along the first direction, the maximum length of one of the light control units is 744.55 μm.

5. The display panel according to claim 1 or 2, wherein: The size of the display panel is 75 inches, the resolution of the display panel is 4K, and along the first direction, the maximum length of one light control unit is 859.5 μm-856.0 μm.

6. The display panel according to claim 5, wherein: Along the first direction, the maximum length of one of the light control units is 859.85 μm.

7. The display panel according to claim 1 or 2, wherein: Along the second direction, the maximum width of one of the light control units is n times the maximum width of one of the pixel units; n is a positive integer.

8. The display panel according to claim 1, wherein: The display liquid crystal panel comprises: a first substrate; and a second base substrate, opposite to the first base substrate and located at a side of the first base substrate away from the light control panel; The light control panel comprises: a third substrate base plate; and a fourth substrate, located on a side of the third substrate away from the light control panel; A distance between a first surface of the first base substrate away from the light control panel and a first surface of the third base substrate away from the display liquid crystal panel is less than or equal to 1.7 mm.

9. The display panel according to claim 8, wherein: The first base substrate and the third base substrate are an integrated structure, and the integrated structure constitutes a common substrate. The display liquid crystal panel and the light control panel share the common substrate.

10. The display panel according to claim 8, further comprising: an adhesive layer, located between the first substrate and the third substrate to bond the first substrate and the third substrate and to prevent an air layer from existing between the first substrate and the third substrate; as well as The first polarizer is located on the first surface of the third substrate away from the display liquid crystal panel, or is located on the first surface of the first substrate away from the light control panel; wherein, The distance between the first surface of the first substrate and the first surface of the third substrate is equal to the sum of the thickness of the first substrate in a direction perpendicular to its first surface, the thickness of the third substrate in a direction perpendicular to the first surface of the first substrate, and the thickness of the adhesive layer in a direction perpendicular to the first surface of the first substrate.

11. The display panel according to claim 10, wherein: The adhesive layer has a refractive index greater than a refractive index of the first base substrate and greater than a refractive index of the third base substrate.

12. The display panel according to claim 11, wherein: The difference between the refractive index of the adhesive layer and the refractive index of the first base substrate is less than 0.3, and the difference between the refractive index of the adhesive layer and the refractive index of the third base substrate is less than 0.

3.

13. The display panel according to claim 1, wherein: A line width of each of the plurality of first signal lines and a line width of each of the plurality of second signal lines are less than or equal to 30 μm.

14. The display panel according to claim 1, wherein: The light control panel further includes a first black matrix covering the plurality of first signal lines and the plurality of second signal lines, and a line width of the first black matrix is ​​less than or equal to 30 μm.

Images