CN210376949U - Display panel and display device - Google Patents
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- CN210376949U CN210376949U CN201921787667.5U CN201921787667U CN210376949U CN 210376949 U CN210376949 U CN 210376949U CN 201921787667 U CN201921787667 U CN 201921787667U CN 210376949 U CN210376949 U CN 210376949U
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Abstract
A display panel and a display device are provided. The display panel includes a display liquid crystal panel and a light control panel which are laminated; the display liquid crystal panel comprises a plurality of grid lines, wherein the grid lines comprise a plurality of first grid lines extending along a first direction and a plurality of second grid lines extending along a second direction so as to define a plurality of color sub-pixel units arranged in an array; the first direction and the second direction are mutually crossed; the light control panel is configured to allow a backlight to be incident to the display liquid crystal panel therethrough and includes a plurality of signal lines; the plurality of signal lines comprise a plurality of first signal lines extending along a first direction and a plurality of second signal lines extending along a second direction so as to define a plurality of light control units arranged in an array; n color sub-pixel units continuously arranged along a first direction form a pixel unit, wherein N is a positive integer; the N color sub-pixel units respectively display different colors; in the first direction, the maximum length of one light control unit is m times of the maximum length of one pixel unit, and m is a non-integer.
Description
Technical Field
At least one embodiment of the present disclosure relates to a display panel and a display device.
Background
In the display panel, a rainbow pattern phenomenon easily occurs, that is, human eyes see color stripes, for example, magenta, yellow and cyan mixed color stripes, which affects visual experience. The rainbow texture phenomenon is improved, and the rainbow texture phenomenon has great significance for improving the display quality of the display panel.
SUMMERY OF THE UTILITY MODEL
At least one embodiment of the present disclosure provides a display panel including a display liquid crystal panel and a light control panel stacked; the display liquid crystal panel comprises a plurality of grid lines, wherein the grid lines comprise 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 are mutually crossed, and the first grid lines and the second grid lines define a plurality of color sub-pixel units which are arranged in an array; the light control panel is configured to allow a backlight to be incident to the display liquid crystal panel therethrough, and includes a plurality of signal lines; the plurality of signal lines comprise 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 continuously arranged along the first direction form a pixel unit, wherein N is a positive integer; the N color sub-pixel units respectively display different colors; in 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, and m is a non-integer.
For example, an embodiment of the present disclosure provides a display panel in which 2.00129< m < 2.00157.
For example, an embodiment of the present disclosure provides a display panel, where m is 2.00143.
For example, an embodiment of the present disclosure provides a display panel, wherein the size of the display panel is 65 inches, the resolution of the display panel is 4K, and the maximum length of one of the light control units in the first direction is 744.0 μm to 744.7 μm.
For example, an embodiment of the present disclosure provides a display panel in which the maximum length of one of the light control cells in the first direction is 744.55 μm.
For example, an embodiment of the present disclosure provides a display panel, wherein the size of the display panel is 75 inches, the resolution of the display panel is 4K, and the maximum length of one of the light control units in the first direction is 859.5 μm to 856.0 μm.
For example, an embodiment of the present disclosure provides a display panel in which the maximum length of one of the light control cells in the first direction is 859.85 μm.
For example, an embodiment of the present disclosure provides a display panel, in the second direction, a maximum width of one of the light control units is n times larger than a maximum width of one of the pixel units; n is a positive integer.
For example, an embodiment of the present disclosure provides a display panel, where the display liquid crystal panel includes: a first substrate base plate and a second substrate base plate; the second substrate base plate is opposite to the first substrate base plate and is positioned on one side of the first substrate base plate, which is far away from the light control panel; the light control panel comprises a third substrate base plate and a fourth substrate base plate; the fourth substrate base plate is positioned on one side of the third substrate base plate, which is far away from the light control panel; the distance between the first surface of the first substrate base plate far away from the light control panel and the first surface of the third substrate base plate far away from the display liquid crystal panel is smaller than or equal to 1.7 mm.
For example, in the display panel provided by an embodiment of the present disclosure, the first substrate and the third 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.
For example, an embodiment of the present disclosure provides a display panel further including an adhesive layer and a first polarizer. An adhesive layer is located between the first substrate base plate and the third substrate base plate to bond the first substrate base plate and the third substrate base plate and to make an air layer not exist between the first substrate base plate and the third substrate base plate; the first polarizer is positioned on the first surface of the third substrate base plate far away from the display liquid crystal panel or the first surface of the first substrate base plate far away from the light control panel; the distance between the first surface of the first base substrate and the first surface of the third base substrate is equal to the sum of the thickness of the first base substrate in the direction perpendicular to the first surface thereof, the thickness of the third base substrate in the direction perpendicular to the first surface of the first base substrate, and the thickness of the adhesive layer in the direction perpendicular to the first surface of the first base substrate.
For example, in the display panel provided by an embodiment of the present disclosure, the refractive index of the bonding layer is greater than the refractive index of the first substrate base plate and greater than the refractive index of the third substrate base plate.
For example, in the display panel provided by an embodiment of the present disclosure, a difference between a refractive index of the adhesive layer and a refractive index of the first substrate is less than 0.3, and a difference between a refractive index of the adhesive layer and a refractive index of the third substrate is less than 0.3.
For example, an embodiment of the present disclosure provides a display panel, in which 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 is equal to or less than 30 μm.
For example, in a 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.
For example, in a display panel provided in an embodiment of the present disclosure, the light control panel is a light control liquid crystal panel; the first signal line is a first grid line, and the second signal line is a first data line; the first gate line and the first data line are configured to provide a first gate signal and a first data signal for driving rotation of liquid crystal molecules in a light control cell of the light control liquid crystal panel, respectively; the first grid lines are second grid lines, and the second grid lines are second data lines; the second gate lines and the second data lines are configured to respectively supply a second gate signal and a second data signal for driving rotation of liquid crystal molecules in color sub-pixel units of the display liquid crystal panel, or the first and second grid lines are configured as a second black matrix.
For example, an embodiment of the present disclosure provides a display panel further including an Isotropic Diffusion Film (IDF), where the isotropic diffusion film is configured to make the light adjusted by the light control panel enter the display liquid crystal panel after being isotropically diffused by the isotropic diffusion film.
For example, the display panel provided by an embodiment of the present disclosure further includes a second polarizer and a third polarizer. The second polaroid is positioned on the second substrate base plate; the third polaroid is positioned on the fourth substrate base plate; at least one of the first polarizer and the second polarizer has a haze of 0% to 55%.
For example, in the display panel provided by an embodiment of the present disclosure, at least one of the first polarizer and the second polarizer has a haze of 25% to 55%.
For example, an embodiment of the present disclosure provides a display panel, in which at least a portion of the first signal lines is a polygonal line and at least a portion of the second signal lines is a polygonal line; or at least part of the plurality of first signal lines is a broken line, and the plurality of second signal lines are all straight lines.
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 positioned on one side of the light control panel far away from the display liquid crystal panel.
The display panel and the display device provided by the embodiment of the disclosure can achieve the effect of improving the rainbow texture phenomenon of the display panel.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.
Fig. 1A and 1B show schematic diagrams of local dimming;
fig. 2A is a schematic cross-sectional view of a display panel according to an embodiment of the disclosure;
fig. 2B is a schematic cross-sectional view of another display panel provided in an embodiment of the disclosure;
fig. 2C is a schematic cross-sectional view of another display panel according to an embodiment of the disclosure;
fig. 2D is a schematic cross-sectional view of another display panel according to an embodiment of the disclosure;
FIG. 3A is a schematic plan view of a display LCD panel of the display panel of FIG. 2A;
FIG. 3B is a first schematic plan view of the light control panel of the display panel of FIG. 2A;
fig. 3C is a first schematic plan view of a display panel according to an embodiment of the disclosure;
FIG. 3D is an enlarged partial schematic view of FIG. 3C;
fig. 4 is a second schematic plan view of a display panel according to an embodiment of the present disclosure;
FIG. 5A is a second schematic plan view of the light control panel of the display panel of FIG. 2A;
fig. 5B is a schematic plan view of a display panel according to an embodiment of the disclosure;
fig. 6 is a schematic diagram of a display device provided in an embodiment of the present disclosure;
fig. 7 is a schematic cross-sectional view of a display device according to an embodiment of the disclosure.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "inner", "outer", "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The drawings in the present disclosure are not strictly drawn to scale, the number of pixel units and the number of light control units in the display panel are not limited to the numbers shown in the drawings, and the specific size and number of each structure can be determined according to actual needs. The drawings described in this disclosure are merely schematic structural illustrations.
The display liquid crystal panel includes a liquid crystal panel and a backlight unit. In general, a liquid crystal panel includes an array substrate and an opposite substrate (e.g., a color filter substrate) disposed opposite to each other to form a liquid crystal cell in which a liquid crystal layer is filled between the array substrate and the opposite substrate; the array substrate is provided with a first polaroid, the opposite substrate is provided with a second polaroid, and the polarization directions of the first polaroid and the second polaroid are perpendicular to each other. The backlight unit is disposed on a non-display side of the liquid crystal panel for providing a planar light source for the liquid crystal panel. Liquid crystal molecules of the liquid crystal layer are twisted under the action of a driving electric field formed between a pixel electrode arranged on the array substrate and a common electrode arranged on the array substrate or a common electrode arranged on the opposite substrate to control the polarization direction of light, and the transmittance of the light is controlled under the coordination of the first polarizer and the second polarizer, so that gray scale display is realized. The backlight unit may be a direct type backlight unit or a side type backlight unit. A direct-type backlight unit comprises multiple point light sources (such as LEDs) arranged in parallel and a diffusion plate, wherein the light emitted by the point light sources is homogenized by the diffusion plate and then enters a liquid crystal panel for display.
For example, for a display liquid crystal panel, the direct type backlight unit may be controlled by combining Local Dimming (LD) technology, so as to improve the display image quality of the display panel. The local dimming technology can not only reduce the power consumption of the display panel, but also realize the dynamic dimming of the backlight area, thereby greatly improving the contrast of the display image and improving the display image quality of the display panel.
The local dimming technique may divide the entire backlight unit into a plurality of individually drivable backlight partitions (blocks), each including one or more LEDs. The driving current of the LED of the backlight subareas corresponding to different parts of the display picture is automatically adjusted according to the gray scale required to be displayed by the different parts, so that the brightness of each subarea in the backlight unit is independently adjusted, and the contrast of the display picture can be improved. For example, in an exemplary direct type backlight unit, a schematic diagram of area division of LED light sources in the entire back plate is shown in fig. 1A, where a small square indicates one LED unit, and a plurality of areas separated by dotted lines indicate a plurality of backlight areas. Each backlight zone comprises one or more LED units and can be controlled independently of the other backlight zones. For example, the LEDs in each backlight sub-section are ganged, i.e., the LEDs in the same backlight sub-section pass the same current.
The local dimming technique can adjust the brightness of the corresponding backlight partition according to the gray scale of the picture content displayed by the display liquid crystal panel. Fig. 1B is a schematic diagram illustrating the display luminance of the display screen and its corresponding backlight partition after the local dimming processing. As shown in fig. 1B, the backlight unit includes a plurality of rectangular backlight areas arranged in an array, and the local dimming technique can adjust the brightness of the corresponding backlight partition according to the gray scale of the image content displayed by the liquid crystal display panel, and for the portion with higher image brightness (gray scale), the brightness of the corresponding backlight partition is also high, and for the portion with lower image brightness, the brightness of the corresponding backlight partition is also low, thereby achieving the purposes of reducing backlight power consumption, improving the contrast of the displayed image, and enhancing the display image quality.
However, the above-described local dimming technique is applicable to a direct type backlight unit, and LEDs as light sources are uniformly distributed throughout the back plate, for example. In order to use the local dimming technology in, for example, a side-in type backlight unit, it is necessary to add a light control panel between a display liquid crystal panel and the side-in type backlight unit, where the light control panel can control light transmittance in a predetermined area, and for a portion with higher screen brightness (gray scale), the light transmittance of a corresponding area of the light control panel is also high, allowing more light from the backlight unit to pass through, and for a portion with lower screen brightness, the light transmittance of a corresponding area of the light control panel is also low, allowing less light from the backlight unit to pass through, thereby achieving the purposes of improving contrast of a display screen and enhancing display image quality. In addition, in the case where the direct type backlight unit is directly formed on the direct type backlight, it is difficult to achieve high density (the number of backlight units per unit area) and high precision in dividing the backlight unit. When the requirements on the division density and the precision of the light control unit are high, the light control panel can meet the requirements, and the manufacturing process of the light control panel is easy to achieve.
For example, each sub-pixel unit includes color films of different colors, and light from the backlight enters the display liquid crystal panel through the light control panel and is emitted out after passing through the color films, so that color display is realized. Since the backlight passes through a plurality of film layers (such as a substrate, an adhesive layer for adhering a display liquid crystal panel and a light control panel, and the like) to be refracted in the process of being conducted from the light incident side to the light exit side, the light exit position of the light is changed, and the light emitted through color films of different colors is not uniform in the whole display area; in addition, because the human eyes are fixed in actual observation, the positions of the display panel close to the human eyes and the positions of the display panel far away from the human eyes have different viewing angles, so that color mixing unevenness, namely rainbow stripes, occurs in different areas of the display panel. For example, the colors of the rainbow patterns show three color mixing stripes of magenta, yellow and cyan.
At least one embodiment of the present disclosure provides a display panel including a display liquid crystal panel and a light control panel stacked; the display liquid crystal panel comprises a plurality of grid lines, wherein the grid lines comprise 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 are mutually crossed, and the first grid lines and the second grid lines define a plurality of color sub-pixel units which are arranged in an array; the light control panel is configured to allow a backlight to be incident to the display liquid crystal panel therethrough, and includes a plurality of signal lines; the plurality of signal lines comprise 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 continuously arranged along the first direction form a pixel unit, wherein N is a positive integer; the N color sub-pixel units respectively display different colors; in 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, and m is a non-integer.
Exemplarily, fig. 3A is a schematic plan view of a liquid crystal display panel of the display panel in fig. 2A, fig. 3B is a schematic plan view of a light control panel of the display panel in fig. 2A, fig. 3C is a schematic plan view of a display panel according to an embodiment of the present disclosure, and fig. 2A is a cross-sectional view along line I-I' in fig. 3C. As shown in fig. 2A, 3A to 3C, the display panel 10 includes a display liquid crystal panel 1 and a light control panel 2 which are laminated. The light control panel 2 is configured to allow backlight to be incident to the display liquid crystal panel 1 therethrough. The backlight refers to light from a backlight source. The display liquid crystal panel 1 is used to realize a display function, and the light control panel 2 is used to control the direction or intensity of backlight incident to the display liquid crystal panel 1 according to requirements, for example, requirements for realizing switching between a narrow viewing angle and a wide viewing angle, requirements for controlling different luminous intensities at various positions of the display panel, and the like. For example, the backlight may be from a direct backlight or a side-lit backlight.
Referring to fig. 3A and 3C, the display liquid crystal panel 1 includes a plurality of grid lines 3, and the plurality of grid lines 3 include a plurality of first grid lines 31 extending in a first direction and a plurality of second grid lines 32 extending in a second direction, the first direction and the second direction crossing 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 consecutively in the first direction constitute one pixel unit 6, N being a positive integer. For example, as shown in fig. 3A, N is 3, and three sub-pixel units in one 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, N sub-pixel units in one pixel unit 6 emit different color lights, i.e., display different colors, respectively, 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 emit red light, green light, and blue light, respectively. In another embodiment, 4 sub-pixel units arranged in series along the first direction may form one pixel unit, for example, the 4 color sub-pixel units emit red light, green light, blue light and white light respectively. Of course, without being limited to the above list, the sub-pixel unit included in one pixel unit 6 may be designed as needed.
Referring to fig. 3B and 3C, the light control panel 2 includes a plurality of signal lines 4, and the plurality of signal lines 4 include a plurality of first signal lines extending in a first directionA signal line 41 and a plurality of second signal lines 42 extending in the second direction, the plurality of first signal lines 41 and the plurality of second signal lines 42 defining a plurality of light control cells 7 arranged in an array. For example, the plurality of grid lines 3 of the display liquid crystal panel 1 are straight lines extending in the first direction and the second direction intersecting each other, and for example, the planar shapes of the plurality of sub-pixel units defined by the grid lines 3 intersecting each other are all rectangular. At least part of the plurality of signal lines 4 are routed in a zigzag manner, so that the planar shape of the light control unit 7 is different from that of the sub-pixel units, and the arrangement rule is different, for example, the planar shape of the light control unit 7 is not a rectangle, such as an irregular pattern shown in fig. 3B; for example, in the first direction or the second direction, the orthogonal projection of the signal lines 4 on the display liquid crystal panel 1 (which means the orthogonal projection on the surface of the display liquid crystal panel 1 facing the light control panel 2) intersects with the grid lines 3, and the signal lines 4 do not have the same or similar pattern as the grid lines 3, so that the human eyes do not feel moire, and the effect of eliminating or improving moire is achieved. As shown in fig. 3C, in the display panel 10 provided in the embodiment of the present application, the plurality of pixel units 6 and the plurality of light control units 7 are respectively arranged in an array, the size and the shape of the plurality of pixel units 6 are the same, and the size and the shape of the plurality of light control units 7 are the same. For example, the maximum length L of one light control unit 7 in the first direction1Is m times of the maximum length of one pixel unit 6, wherein m is a non-integer, so as to achieve the effect of improving the rainbow texture phenomenon of the display panel.
Fig. 3D is a partially enlarged schematic view of fig. 3C. For example, as shown in fig. 3D, the plan view of one light control unit 7 is an irregular view. As shown in fig. 3D, at point a1、A2、M、C、F、D、N、B2The pattern of vertices constitutes a planar pattern of light control cells 7. It should be noted that, in the present disclosure, the maximum length of one light control unit in the first direction refers to: the maximum of all length values of one light control unit 7 in the first direction. In this embodiment, the lengths of the one light control unit 7 in the first direction are different along the second direction, and the maximum length of the lengths is the maximum length L of the one light control unit 7 in the first direction1。
For example, in the embodiment shown in fig. 3C, 2.00129< m <2.00157, which can achieve better effect of improving rainbow texture. For example, m is 2.00143. Experiments prove that in the range of 2.00129< m <2.00157, when m is 2.00143, the effect of improving rainbow patterns is best.
For example, in one embodiment, the display panel 10 has a size of 65 inches, that is, the planar 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. The resolution of the display panel 10 is 4K, and the number of pixels is 4096 × 2160, 4096 × 3112, 3840 × 2160, or the like. In the first direction, the maximum length L of one light control unit 71Is 744.15-744.7 μm, and can achieve better effect of improving rainbow texture phenomenon. For example, the maximum length L of one light control unit 7 in the first direction1Is 744.55 μm, and the test proves that the maximum length L is in the range of 744.15 μm-744.7 μm1When the thickness is 744.55 μm, the effect of improving rainbow patterns is the best. Table 1 shows that1In the data table of the single comparison test result under different conditions, the gray-white lines in table 1 are the results after the rainbow lines presented by the display panel are converted into gray images, and the more obvious the gray-white lines are, the more obvious the rainbow lines are. Referring to table 1 below, the maximum length L at one light control unit 71When the average molecular weight of the compound (D) is in the range of 744.15 μm to 744.7 μm, the effect of improving rainbow patterns is good. Also, as can be seen from Table 1, when L is1When the thickness is 744.55 mu m, the effect of improving rainbow patterns is best.
TABLE 1 maximum Length L of a light control Unit1Data sheet for influence on rainbow pattern
For example, in another embodiment, the display panel 10 has a dimension of 75 inches, that is, the planar 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. And, the display panelThe resolution of 10 is 4K, the number of pixel units is 4096 × 2160, 4096 × 3112, 3840 × 2160, and the like, and the pixel unit is composed of a plurality of color sub-pixel units. In the first direction, the maximum length L of one light control unit 71Is 859.5-856.0 μm, and can achieve better effect of improving rainbow texture phenomenon. For example, the maximum length L of one light control unit 7 in the first direction1Is 859.85 μm, and the test proves that the maximum length L is in the range of 859.5 μm-856.0 μm1When the thickness is 859.85 μm, the effect of improving rainbow patterns is the best.
For example, the maximum width L of one light control unit 7 in the second direction2Is n times the maximum width of a pixel unit, and n is a positive integer. I.e. the maximum width L of one light control unit 7 in the second direction2Equal to the sum of the maximum widths of the n pixel units 6 which are continuously arranged, so that the rainbow patterns are better improved, and the arrangement rule of the plurality of light control units 7 is convenient to manufacture.
For example, in the display panel 10 shown in fig. 3C, n is 4. For another example, fig. 4 is a schematic plan view of a display panel according to an embodiment of the present disclosure, where in the display panel 10 shown in fig. 4, n is 7.
For example, in the present embodiment, the shape of the light control unit 7 is an irregular figure, and in other embodiments, the shape of the light control unit 7 may also be a regular figure, such as a rectangle.
It should be noted that, the maximum width in the present disclosure means: the distance between a first end of one of the light management units and a second end of the light management unit that is farthest from the first end, on an axis along the second direction (Y-axis in fig. 3C). For example, in fig. 3C, the maximum width of one light control unit 7 in the second direction is: on the axis in the second direction (Y axis in the figure), the first end a of the light control unit 71A distance A from the first end A to the light control unit1The distance between the most distal second ends C.
For example, as shown in fig. 2A, 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 one 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. The light control panel 2 is, for example, a liquid crystal light control panel including a third substrate 23, a fourth substrate 24, and a light control liquid crystal layer 25. A fourth substrate 24 is positioned on the side of the third substrate 23 remote from the light control panel 2, and a light control liquid crystal layer 25 is positioned between the third substrate 23 and the fourth substrate 24. The distance d between the first surface 111 of the first substrate 11 remote from the light control panel 2 and the first surface 231 of the third substrate 23 remote from the display liquid crystal panel 1 is 1.7mm or less. Predicted by analysis and demonstrated by experiment: the rainbow streak can be weakened by reducing the distance. Table 2 is a data table of single comparison test results under different conditions d, and the gray-white lines in table 2 are results obtained after the rainbow lines presented by the display panel are converted into gray images, and the more obvious the gray-white lines are, the more obvious the rainbow lines are. Referring to the following table 2, the effect of improving the rainbow patterns gradually becomes better as the distance d decreases; and under the condition that d is less than or equal to 1.7mm, the rainbow texture improving effect is better.
TABLE 2 data sheet of the influence of distance d on rainbow patterns
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 base plate 11 and the third substrate base plate 23 to bond the first substrate base plate 11 and the third substrate base plate 23 and to make an air layer not exist between the first substrate base plate 11 and the third substrate base plate 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 base 11 and the first surface 231 of the third substrate base 23 is equal to the sum of the thickness of the first substrate base 11 in the direction perpendicular to the first surface 111 thereof, the thickness of the third substrate base 23 in the direction perpendicular to the first surface 111 of the first substrate base 11, and the thickness of the adhesive layer 12 in the direction perpendicular to the first surface 111 of the first substrate base 11. In the present embodiment, since the first polarizer 12 is located on the first surface 111 of the first substrate base 11, the distance d can be reduced, thereby better improving the rainbow texture phenomenon. For example, the thickness of the first substrate base 11 in the direction perpendicular to the first surface 111 thereof is 0.5mm, the thickness of the third substrate base 23 in the direction perpendicular to the first surface 111 of the first substrate base 11 is 0.5mm, and the thickness of the adhesive layer 12 in the direction perpendicular to the first surface 111 of the first substrate base 11 is 0.5 mm. For example, the first substrate 11 and the third substrate 23 may be ultra-thin substrates.
For example, fig. 2B is a schematic cross-sectional view of another display panel provided in an embodiment of the disclosure. The difference between the display panel 10 shown in fig. 2B and the display panel 10 shown in fig. 2A is that the first polarizer 101 is located on the first surface 111 of the first substrate 11 away from the light control panel 2, and the present embodiment can also achieve the technical effect of reducing the distance d, so as to better improve the rainbow effect. Other structures not mentioned of the display panel shown in fig. 2B are the same as those shown in fig. 2A, and are not repeated here.
For example, fig. 2C is a schematic cross-sectional view of another display panel provided in an embodiment of the disclosure. The display panel 10 shown in fig. 2C is different from the display panel 10 shown in fig. 2A in that the first substrate 11 and the third substrate 23 are an integral structure constituting the 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 substrate board 11 and the third substrate board 23 are integrated into one board, i.e., the common board 110. Thus, the display panel 10 includes three substrate substrates, and the distance d can be reduced to achieve a better effect of improving the rainbow patterns. Other structures not mentioned of the display panel shown in fig. 2C are the same as those shown in fig. 2A, and are not repeated here.
In at least one implementation, for example, as shown in fig. 2A, the light conditioned by the light control panel 2 (light ray 1 and light ray 2 in fig. 2A) passes through the third substrate 23, the adhesive layer 12, and the first substrate 11 in sequence, first refracted at the interface of the third substrate 23 and the adhesive layer 12, and then refracted at the interface of the adhesive layer 12 and the third substrate 23 a second time. In this process, if the light is greatly shifted in the horizontal direction (indicated by the double-headed arrow in fig. 2A), the rainbow effect is serious, and the user experience is affected. For example, the refractive index of the adhesive layer 12 is greater than the refractive index of the first substrate 11 and greater than the refractive index of the third substrate 23, so that, under the condition that the thickness of the first substrate 11 in the direction perpendicular to the first surface 111 thereof, the thickness of the third substrate 23 in the direction perpendicular to the first surface 111 thereof, and the thickness of the adhesive layer 12 in the direction perpendicular to the first surface 111 thereof are constant, the deviation of the light adjusted by the light control panel 2 in the direction of the normal line (broken line in the optical path diagram) during the propagation path is reduced to compensate for the deviation of the light exit position in the horizontal direction during the propagation path. So that the degree of deviation and unevenness of light emitted from sub-pixel units of different colors can be reduced to weaken rainbow fringes.
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 substrate 11 and the third substrate 23 are glass substrates, the refractive index is 1.4-1.5, and the refractive index of the bonding 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 them as needed. Tests prove that the difference is too large or too small, which is not beneficial to improving the rainbow patterns, and the rainbow patterns can be improved well within the range of the difference. Table 3 is a data table of a single comparison test result under the conditions that the refractive indexes of the first substrate base plate 11 and the third substrate base plate 23 are both 1.5, and the refractive index N of the adhesive layer 12 is different, and the gray-white lines in table 3 are results after the rainbow lines presented by the display panel are converted into gray images, and the more obvious the gray-white lines are, the more obvious the rainbow lines are. Referring to the following table 3, the effect of improving rainbow patterns is better in the case where N >1.5 than in the case where N <1.5, that is, the effect of improving moire is better when 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; when N >1.8, the rainbow-grain improvement effect starts to decrease, and therefore, in the case where 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, the effect of improving rainbow-grains is more desirable.
TABLE 3 data sheet of the effect of the refractive index N of the adhesive layer on the rainbow texture
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 30 μm or less. Experiments show that the smaller the line widths of the first signal line and the second signal line are, the weaker the rainbow patterns are. 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 30 μm or less, the rainbow-streak phenomenon of the display panel 10 is significantly improved.
In at least one embodiment, for example, as shown in fig. 2C, the light control panel 10 further 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 a first surface 1101 of the common substrate 110 away from the display liquid crystal panel 1, that is, an orthographic projection of the plurality of first signal lines 41 and the plurality of second signal lines 42 on the first surface 1101 is located within an orthographic projection of the first black matrix 91 on the first surface 1101. For example, the line width of the first black matrix 91 is 30 μm or less to achieve the effect of improving the rainbow streak phenomenon. For example, the first black matrix 91 has the same pattern and the same line width as the first and second signal lines 41 and 42, thereby improving the rainbow patterns and increasing the transmittance of the display panel 10.
TABLE 4 line widths D of the first and second signal lines1(or the line width of the black matrix) under different conditions, the gray-white lines in table 4 are the results after the rainbow lines presented by the display panel are converted into gray images, and the more obvious the gray-white lines are, the more obvious the rainbow lines are. Referring to the following table 4, the line widths (or the line widths of the black matrix) D of the first signal line and the second signal line1The line widths D of the first and second signal lines (or the line width of the black matrix) are good for improving rainbow unevenness at 30 μm or less1The rainbow effect is improved in the case of more than 30D, and thus, the line widths (or the line width of the black matrix) D of the first signal line and the second signal line2Under the condition of less than or equal to 30 mu m, the effect of improving rainbow patterns is better. In addition, the display liquid crystal panel and the light-operated liquid crystal panel respectively comprise a PS column for maintaining the thickness of a liquid crystal box, and the line widths (or the line widths of the black matrixes) D of the first signal line and the second signal line at the position corresponding to the PS column2Greater than or equal to D1. According to Table 4, at D1D is 30 μm or less2Also less than or equal to 30 μm, and the effect of improving rainbow patterns is better.
TABLE 4 data sheet of the effect of the refractive index N of the adhesive layer on the rainbow texture
For example, the first signal line 41 is a first gate line, the second signal line 42 is a first data line, the first signal line 41 is insulated from the second signal line 42, and an insulating layer for insulating the first signal line 41 from the second signal line is provided between the two lines. The first gate lines and the first data lines are configured to distribute a second gate signal and a second data signal that provide for driving rotation of liquid crystal molecules (not shown) in the light control cells 7 of the light control panel 2 to enable adjustment of the exit angle or intensity of the backlight by the light control panel 2. 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 of the light control units 7 includes a thin film transistor (as a switching element), a pixel electrode, a common electrode; a gate electrode of the thin film transistor is connected to the first gate line to receive a gate signal, a first electrode (e.g., a source electrode) of the thin film transistor is connected to the first data line to receive a data signal, and a first electrode (e.g., a drain electrode) of the thin film transistor is connected to the pixel electrode to charge the pixel electrode when the thin film transistor is in an on state; the common electrode and the pixel electrode form a liquid crystal capacitance 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 rotation of liquid crystal molecules in the liquid crystal layer. According to the light control panel being of a vertical electric field type or a horizontal electric field type, the common electrode and the pixel electrode may be located on the same substrate and disposed adjacent to each other, or located on different substrates and facing each other.
In one embodiment, the grid lines 3 may include a second grid line and a second data line, for example, the first grid line 31 is the second grid line, the second grid line 32 is the second grid 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 supply a second gate signal and a second data signal for driving rotation of liquid crystal molecules (not shown) in a sub-pixel unit of the display liquid crystal panel 1, respectively. Alternatively, in another embodiment, the grid lines 3 may further 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 substrate 12 and defining a plurality of color sub-pixel units. The second black matrix includes first black matrix stripes extending in a first direction and second black matrix stripes extending in a second direction. For example, the first and second grid lines 31 and 32 are configured as first and second black matrix bars, respectively; the first grid lines 31 are in a direction perpendicular to the display surface of the display panel, the first black matrix stripes cover first signal lines (e.g., first gate lines) extending in the first direction, e.g., have the same profile as the first signal lines, and the second black matrix stripes cover second signal lines (e.g., first data lines) extending in the second direction, i.e., an orthographic projection of the first signal lines on the surface of the display liquid crystal panel 1 facing the light control panel 2 is located within an orthographic projection of the first black matrix stripes on the surface of the display liquid crystal panel 1 facing the light control panel 2. For example, the first black matrix stripes have the same profile as the second signal lines, i.e., the orthographic projection of the first signal lines on the face of the display liquid crystal panel 1 facing the light control panel 2 coincides with the orthographic projection of the first black matrix stripes on the face 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, a common electrode; a gate electrode of the thin film transistor is connected to the second gate line to receive a gate signal, a first electrode (e.g., a source electrode) of the thin film transistor is connected to the second data line to receive a data signal, and a first electrode (e.g., a drain electrode) of the thin film transistor is connected to the pixel electrode to charge the pixel electrode when the thin film transistor is in an on state; the common electrode and the pixel electrode form a liquid crystal capacitance 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 rotation of liquid crystal molecules in the liquid crystal layer. According to the display liquid crystal panel being a vertical electric field type or a horizontal electric field type, the common electrode and the pixel electrode may be disposed adjacent to each other on the same substrate or on different substrates facing each other. The display liquid crystal panel further comprises a color film for color display.
It should be noted that the drawings of the embodiments of the present disclosure only show the structures directly related to the core idea of the present invention, and other structures of the display liquid crystal panel 1, such as the display driving circuit, the color film, and the interlayer insulating layer, and other structures of the light control panel 2, such as the light control driving circuit, etc., and those skilled in the art can refer to the conventional techniques.
For example, in some embodiments, at least a portion of the first plurality of signal lines is a meander line and at least a portion of the second plurality of signal lines is a meander line. Note that the at least part of the plurality of first signal lines being the broken line includes a case where the entire first signal lines are the broken line for at least part of the first signal lines, and also includes a case where a part of one signal line is the broken line. The same is true for the explanation that at least part of the plurality of second signal lines is a broken line.
For example, in the embodiment shown in fig. 3A-3C, the first signal lines 41 are all meander lines, and the second signal lines 42 are all meander lines. The plurality of pixel units 6 and the plurality of light control units 7 are respectively arranged in an array having an arrangement period in the first direction and the second direction, respectively. For example, the first signal line 41 is a zigzag line and includes a plurality of first zigzag units 5 arranged in a continuous cycle, and one first zigzag unit 5 corresponds to one light control unit 7, that is, the first zigzag unit 5 crosses over one light control unit 7 in the first direction. And each of the first folding units 5 includes a first portion 51 and a second portion 52 sequentially arranged in the first direction, the first portion 51 including a first end a1 connected to the second portion 52, and the second portion 52 including a first end B1 connected to the first portion 51. That is, the first end a1 of the first portion 51 and the first end B1 of the second portion 52 are connected, the connection point of the first portion 51 and the second portion 52 is a1(B1), and points a1 and B1 coincide. It should be noted that the above-mentioned continuous periodic arrangement means that the pattern of each first folding unit 5 is the same, and two adjacent first folding units 5 are connected and continuously distributed, and the second end a2 of the first portion 51 of one first folding unit 5 is connected with the second end B2 of the second portion 52 of the adjacent first folding unit 5, for example, two adjacent first folding units 5 are connected to the point a2 and the point B2. The pattern of the first signal line 41 can achieve better effect of eliminating or improving moire fringes, and the pattern is in periodic arrangement, simple in structure and convenient to manufacture.
For example, as shown in fig. 3D, since m is a non-integer, an intersection (e.g., point a) of at least a part of the first signal line 41 and at least a part of the second signal line 422Point B2) The orthographic projection of the second grid lines 32 on the surface of the display liquid crystal panel 1 facing the light control panel 2 and the orthographic projection of the second grid lines 32 on the surface of the display liquid crystal panel 1 facing the light control panel 2 do not overlap; a first end A of a first part 51 of a first folding unit 5 of at least part of the plurality of first folding units 51And a first end B of the second portion 521Connection point A of1(B1) The orthographic projection of one second grid line 32 on the face of the display liquid crystal panel 1 facing the light control panel 2 does not overlap with the orthographic projection of the other second grid line 32 on the face of the display liquid crystal panel 1 facing the light control panel 2.
For example, as shown in fig. 3B, the first portion 51 and the second portion 52 of the first folding unit 5 may be straight line segments such as the bent portion of the first folding unit including corners; alternatively, in other embodiments, the first portion 51 and the second portion 52 of the first folding unit 5 may also be curved segments, for example, the bending portion of the first folding unit does not include a corner and is curved (for example, arc-shaped).
For example, as shown in fig. 3B and 3C, the first portion 51 of the first folding unit 5 has a first angle α with the first direction (i.e., X-axis), the second portion 52 of the first folding unit 5 has a second angle β with the first direction, and both the first angle α and the second angle β are 37 to 70 °, for example, the first angle α is equal to or not equal to the second angle β.
For example, as shown in fig. 3B and 3C, the second signal line 42 is a zigzag line and includes a plurality of second folding units 8 arranged in a cycle, and one second folding unit 8 may correspond to one light control unit 7. A second folding unit 8 includes a first portion 81 and a second portion 82 sequentially arranged in the second direction, the first portion 81 including a first end connected to the second portion 82, and the second portion 82 including a first end connected to the first portion 81. That is, the first end of the first portion 81 of the second folding unit 8 and the first end of the second portion 82 of the second folding unit are connected, and the connection point thereof is a point M. Thus, the second signal lines 42 and the first signal lines 41 are both wired in a zigzag manner, so that the rainbow pattern phenomenon is improved, and the effect of eliminating moire is further improved.
For example, as shown in fig. 3C and 3D, the first portion 81 of the second folding unit 8 has a third angle θ with the second direction, the second portion 82 of the second folding unit 8 has a fourth angle γ with the second direction, and both the third angle θ and the fourth angle γ are smaller than 7 °. The irregular degree of the pattern of the signal line 4 is obviously increased when the third included angle theta and the fourth included angle gamma are too large, the irregular degree of the pattern of the signal line 4 is not beneficial to eliminating moire fringes, and the problem can be prevented when the third included angle theta and the fourth included angle gamma are both smaller than 7 degrees. For example, third included angle θ is equal to or not equal to fourth included angle γ.
In some embodiments, at least a portion of the first signal lines are broken lines, and the second signal lines are all straight lines. Fig. 5A is a second schematic plan view of the light control panel of the display panel in fig. 2A, and fig. 5B is a third schematic plan view of the display panel according to an embodiment of the present disclosure. For example, as shown in fig. 5A to 5B, the plurality of first signal lines 41 are all broken lines, and the plurality of second signal lines 42 are all straight lines. This solution also allows to reduce the moire while improving the rainbow effect.
Fig. 2D is a schematic cross-sectional view of another display panel according to an embodiment of the disclosure. As shown in fig. 2D, 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 to make the light adjusted by the light control panel 2 enter the isotropic diffusion film 15 and enter the display liquid crystal panel 1 after being isotropically diffused. 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 a 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 cells, and thus, a better light control effect can be achieved by disposing the isotropic diffusion film 15 on the side of the first black matrix 91 close to the common substrate 110. 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 remote from the light control panel 2. Alternatively, in the case where the display panel 10 includes four substrate boards as shown in fig. 2A, the isotropic diffusion film 15 may be positioned between the first substrate board 11 and the third substrate board 23. The specific position of the isotropic diffusion film 15 is not particularly limited as long as the light adjusted by the light control panel 2 enters the isotropic diffusion film 15, is isotropically diffused, and is incident into the display liquid crystal panel 1. In the embodiment of the present disclosure, the isotropic diffusion film 15 may diffuse the light adjusted by the light control panel 2 in a smaller angle range, so that the light emitted from each color sub-pixel unit is relatively uniform, thereby further improving the rainbow texture, and at the same time, the light direction emitted from the light control panel 1 is not greatly affected. Other non-mentioned features of the display panel 10 shown in fig. 2D are the same as those shown in fig. 2C.
For example, as shown in fig. 2A, the display panel 10 further includes a second polarizer 102 and a third polarizer 103, the second polarizer 102 is located on the second substrate 12; the third polarizer 103 is located on the fourth substrate 24, and at least one of the first polarizer 101 and the second polarizer 102 has a haze of 0% to 55%. This also achieves the effect of improving the rainbow patterns. For example, at least one of the first polarizer 101 and the second polarizer 102 has a haze of 25% to 55%, and in this range, the effect of improving rainbow patterns is good.
At least one embodiment of the present disclosure provides a display device including any one of the display panels provided in the embodiments of the present disclosure.
For example, fig. 6 is a schematic diagram of a display device provided in an embodiment of the present disclosure, and as shown in fig. 6, the display device 100 includes any one of the display panels 10 provided in the embodiment of the present disclosure. The display device 100 is a liquid crystal display device. For example, the display device may be implemented as a product of: any product or component with a display function, such as a mobile phone, a tablet computer, a display, a notebook computer, an ATM machine and the like. The display device 10 can control the direction or intensity of the backlight incident to the display liquid crystal panel 1, and can achieve the effect of eliminating or improving rainbow lines.
For example, fig. 7 is a schematic cross-sectional view of a display device according to an embodiment of the disclosure. The display device 100 also includes a backlight unit (backlight) 16. The backlight unit 16 is located on a side of the light control panel 2 away from the liquid crystal display panel 1, so that the backlight from the backlight unit 9 enters the light control panel 2 first, and the exit angle or intensity of the backlight is adjusted by the light control panel 2 according to the requirement and then enters the liquid crystal display panel 1, for example, the requirement of switching between a narrow viewing angle and a wide viewing angle is met, and the requirement of controlling different light intensities at various positions of the display panel is met. The backlight unit 16 may be a direct type backlight unit or a side type backlight unit, and the embodiment of the present disclosure is not limited thereto.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (15)
1. A display panel comprising a display liquid crystal panel and a light control panel which are laminated,
the display liquid crystal panel comprises a plurality of grid lines, wherein the grid lines comprise 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 are mutually crossed, and the first grid lines and the second grid lines define a plurality of color sub-pixel units which are arranged in an array;
the light control panel is configured to allow a backlight to be incident to the display liquid crystal panel therethrough, and includes a plurality of signal lines; the plurality of signal lines comprise 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 continuously arranged along the first direction form a pixel unit, wherein N is a positive integer; the N color sub-pixel units respectively display different colors;
in 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, and m is a non-integer.
2. The display panel of claim 1 wherein 2.00129< m < 2.00157.
3. The display panel according to claim 2, wherein m is 2.00143.
4. A display panel as claimed in any one of claims 1 to 3, characterized in that the size of the display panel is 65 inches, the resolution of the display panel is 4K, and the maximum length of one of the light control units in the first direction is 744.0 μm-744.7 μm.
5. The display panel of claim 4 wherein the maximum length of one of the light control cells in the first direction is 744.55 μm.
6. A display panel as claimed in any one of claims 1 to 3, characterized in that the size of the display panel is 75 inches, the resolution of the display panel is 4K, and the maximum length of one of the light control units in the first direction is 859.5 μm-856.0 μm.
7. The display panel of claim 6 wherein the maximum length of one of the light control cells in the first direction is 859.85 μm.
8. A display panel as claimed in any one of claims 1 to 3 wherein the maximum width of one of the light control cells is n times the maximum width of one of the pixel cells in the second direction; n is a positive integer.
9. The display panel according to claim 1, wherein the display liquid crystal panel comprises:
a first substrate base plate; and
the second substrate base plate is opposite to the first substrate base plate and is positioned on one side of the first substrate base plate, which is far away from the light control panel;
the light control panel includes:
a third substrate base plate; and
the fourth substrate base plate is positioned on one side, far away from the light control panel, of the third substrate base plate;
the distance between the first surface of the first substrate base plate far away from the light control panel and the first surface of the third substrate base plate far away from the display liquid crystal panel is smaller than or equal to 1.7 mm.
10. The display panel of claim 9, wherein the first substrate base plate and the third substrate base plate are a unitary structure, the unitary structure forming a common base plate, the common base plate being shared by the display liquid crystal panel and the light control panel.
11. The display panel according to claim 9, characterized in that the display panel further comprises:
an adhesive layer located between the first substrate base plate and the third substrate base plate to bond the first substrate base plate and the third substrate base plate and to make an air layer not exist between the first substrate base plate and the third substrate base plate; and
the first polarizer is positioned on the first surface, far away from the display liquid crystal panel, of the third substrate base plate or on the first surface, far away from the light control panel, of the first substrate base plate;
the distance between the first surface of the first base substrate and the first surface of the third base substrate is equal to the sum of the thickness of the first base substrate in the direction perpendicular to the first surface thereof, the thickness of the third base substrate in the direction perpendicular to the first surface of the first base substrate, and the thickness of the adhesive layer in the direction perpendicular to the first surface of the first base substrate.
12. The display panel according to claim 11, wherein a refractive index of the adhesive layer is larger than a refractive index of the first substrate base plate and larger than a refractive index of the third substrate base plate.
13. The display panel according to claim 12, wherein a difference between a refractive index of the adhesive layer and a refractive index of the first substrate base plate is less than 0.3, and a difference between a refractive index of the adhesive layer and a refractive index of the third substrate base plate is less than 0.3.
14. 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 is 30 μm or less.
15. The display panel according to claim 1, wherein the light control panel further comprises 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 30 μm or less.
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