Display panel and display device

Abstract

The present disclosure relates to a display panel and a display device. The display panel includes: a display liquid crystal panel, including a plurality of sub-pixels arranged in an array defined by a first grid structure; a dimming liquid crystal panel, located on the light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel includes a plurality of dimming pixels arranged in an array defined by a second grid structure; wherein the second grid structure includes a plurality of shading light lines extending in a waveform along the row direction, the waveform period of the shading light lines includes a first part and a second part, the first part includes a first segment and a second segment connecting adjacent waveform valley points and waveform peak points of the shading light lines, the first segment and the second segment have different projection lengths in the row direction, the second part includes a third segment symmetrical to the second segment in the column direction, and a fourth segment symmetrical to the first segment in the column direction.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Among flat panel display devices, liquid crystal display devices have a dominant position in the product market due to their small size, low power consumption, relatively low manufacturing cost and no radiation. How to improve the display quality of liquid crystal display devices and bring better viewing experience to users has always been the focus of research for those skilled in the art. Summary of the invention

[0003] According to one aspect of an embodiment of the present disclosure, there is provided a display panel, including:

[0004] A display liquid crystal panel, comprising a plurality of sub-pixels arranged in an array and defined by a first grid structure;

[0005] a dimming liquid crystal panel, located at the light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel comprising a plurality of dimming pixels arranged in an array and defined by a second grid structure;

[0006] Among them, the second grid structure includes a plurality of shading line lines extending in a waveform along the row direction, the waveform period of the shading line includes a first part and a second part, the first part includes a first segment and a second segment connecting adjacent waveform valley points and waveform peak points of the shading line, the projection lengths of the first segment and the second segment in the row direction are different, the second part includes a third segment symmetrical with the second segment in the column direction, and a fourth segment symmetrical with the first segment in the column direction.

[0007] In some embodiments, the shading line extends in a curved wave shape or a zigzag wave shape.

[0008] In some embodiments, the shading line extends in a zigzag wave shape; the first segment and the second segment are respectively straight line segments; or, the first segment and the second segment are respectively arc segments; or, the first segment is an arc segment and the second segment is a straight line segment.

[0009] In some embodiments, along a column direction, the first portions and the second portions are arranged alternately.

[0010] In some embodiments, the end of the first segment, the end of the second segment, the end of the third segment, and the end of the fourth segment overlap with the first grid structure in a direction perpendicular to the display liquid crystal panel; or, the end of the first segment, the end of the second segment, the end of the third segment, and the end of the fourth segment overlap with the intersection of the first grid structure in a direction perpendicular to the display liquid crystal panel.

[0011] In some embodiments, each row of the sub-pixels includes multiple pixel units, each of the pixel units includes a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors and arranged in sequence, and the sub-pixels in the same column have the same color; the area of ​​the dimming pixel is not less than the area of ​​the pixel unit.

[0012] In some embodiments, the area of ​​the dimming pixel is approximately 4 times the area of ​​the pixel unit; the orthographic projection of the first segment on the display liquid crystal panel roughly coincides with the diagonal of the area where the 4*2 sub-pixels are located, and the orthographic projection of the second segment on the display liquid crystal panel roughly coincides with the diagonal of the area where the 2*2 sub-pixels are located.

[0013] In some embodiments, the first grid structure includes: a plurality of first gate lines extending in a row direction and a plurality of first data lines extending in a column direction, and a shading matrix located on a side of the first gate lines and the first data lines away from the dimming liquid crystal panel, the line widths of the first gate lines and the first data lines are both smaller than the line width of the shading matrix, and the first gate lines and the first data lines overlap with the shading matrix in a direction perpendicular to the display liquid crystal panel.

[0014] In some embodiments, the second grid structure further includes: a plurality of second gate lines extending in a row direction and a plurality of second data lines extending in a column direction, the second gate lines and the second data lines are located on a side of the shading line away from the display liquid crystal panel, the line width of the second gate line is smaller than the line width of the shading line, and the second gate line overlaps with the shading line in a direction perpendicular to the display liquid crystal panel.

[0015] In some embodiments, the second data line extends in a zigzag wave shape.

[0016] In some embodiments, the dimming liquid crystal panel and the display liquid crystal panel are bonded by transparent optical adhesive; or, the dimming liquid crystal panel and the display liquid crystal panel share the same manufacturing substrate on the adjacent side.

[0017] According to another aspect of the embodiments of the present disclosure, a display device is provided, comprising the display panel of any one of the aforementioned embodiments.

[0018] The display panel of the embodiment of the present disclosure not only improves the moiré pattern of the display screen, but also further improves the rainbow pattern, thus having a better display quality.

[0019] Other features and advantages of the present disclosure will become apparent from the following detailed description of embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of a display panel structure according to an embodiment of the present disclosure;

[0023] Figure 2a Schematic diagram of visual dislocation of display panel when viewed from different viewing angles;

[0024] Figure 2b A comparison diagram of the relevant technical display images in corresponding areas as viewed by human eyes from viewing angles A and B;

[0025] Figure 3 A partial front view of a display panel according to another embodiment of the present disclosure;

[0026] Figure 4 A partial front view of a display panel according to another embodiment of the present disclosure;

[0027] Figure 5 A comparison diagram of color temperature simulation curves of a display panel according to an embodiment of the present disclosure and a display panel according to related art;

[0028] Figure 6a is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure;

[0029] Figure 6b FIG. 4 is a cross-sectional schematic diagram of a display panel according to another embodiment of the present disclosure.

[0030] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0031] Various embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps described in these embodiments should be interpreted as being merely illustrative and not as a limitation.

[0032] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" 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.

[0033] In the present disclosure, when a specific element is described as being between a first element and a second element, an intervening element may or may not exist between the specific element and the first element or the second element.

[0034] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] At present, a common type of display device on the market is a liquid crystal display device. The structure of a conventional liquid crystal display device generally includes a liquid crystal display panel and a backlight module located on the light incident side of the liquid crystal display panel. Among them, the liquid crystal display panel includes: an array substrate and a filter substrate arranged relative to each other to form a liquid crystal box, a liquid crystal located between the array substrate and the filter substrate, a first polarizer located on the side of the array substrate away from the filter substrate, and a second polarizer located on the side of the filter substrate away from the array substrate, wherein the array substrate is closer to the backlight module than the filter substrate, and the polarization directions of the first polarizer and the second polarizer are orthogonal. The liquid crystal display panel includes a plurality of pixel units, and each pixel unit includes a plurality of sub-pixels of different colors. The sub-pixels of the same pixel unit are mixed in a certain proportion, so that the pixel unit can display colors visible to the human eye. Due to its own structural characteristics, this type of conventional liquid crystal display device has technical defects such as poor picture contrast and dark state light leakage.

[0037] In order to improve the above defects, the related art proposes a liquid crystal display device using dual-screen driving technology. The main difference from the above conventional liquid crystal display device is that its display panel includes a dimming liquid crystal panel and a display liquid crystal panel arranged in a stacked manner. Among them, the display liquid crystal panel has a similar structure and working principle to the above liquid crystal display panel. The dimming liquid crystal panel is located on the light incident side of the display liquid crystal panel and on the light exit side of the backlight module, and includes a plurality of dimming pixels arranged in an array. Each dimming pixel serves as a dimming unit, which is used to control the direction and intensity of the backlight incident on the corresponding area of ​​the display liquid crystal panel through the dimming pixel.

[0038] The liquid crystal display device of the related technology can realize dimming of the relatively fine area of ​​the picture. The principle is to adjust the transmittance of the corresponding dimming pixels of the dimming liquid crystal panel (i.e., the direction and / or strength of the backlight allowed to pass through) according to the grayscale of the displayed picture in different areas. For example, for areas with higher picture brightness, the transmittance of the corresponding dimming pixels of the dimming liquid crystal panel is also adjusted to be relatively high; and for areas with lower picture brightness, the transmittance of the corresponding dimming pixels of the dimming liquid crystal panel is also adjusted to be relatively low; for areas where the picture is displayed as black, the transmittance of the corresponding dimming pixels of the dimming liquid crystal panel is adjusted to be basically zero. Compared with the conventional liquid crystal display device mentioned above, this type of liquid crystal display device can overcome the defect of light leakage in the dark state of the picture, and the contrast is significantly improved, thereby bringing a better viewing experience to the user. In particular, when the liquid crystal display device performs HDR (High-Dynamic Range, high dynamic range image) display, regional dimming makes the brightness range of the picture wider, the low grayscale transition more natural, and the display effect better.

[0039] However, since the pixel sizes of the dimming LCD panel and the display LCD panel are at the same order of magnitude and their spatial periods are relatively close, the image after the dimming LCD panel and the display LCD panel are stacked is prone to produce alternating light and dark stripes, namely moiré. Moiré is a manifestation of the beat principle.

[0040] To improve the moiré, another related technology proposes to design the grid lines extending along the row direction of the dimming liquid crystal panel into a zigzag shape, and use a shielding line with the same shape but larger line width to block it from the side close to the display liquid crystal panel. In this related technology, the grid shape of the dimming liquid crystal panel and the display liquid crystal panel is significantly different, and the human eye is not easily aware of the moiré after stacking, thereby achieving the purpose of improving or eliminating the moiré.

[0041] The inventors of the present application discovered during the research and development process of related products that the above-mentioned related technologies capable of improving moiré patterns can result in colored stripes, i.e., rainbow patterns, being visible on the display screen, which still affects the quality of the picture and reduces the viewing experience of users.

[0042] The embodiments of the present disclosure provide a display panel and a display device to improve rainbow patterns on a screen of the display device and enhance the display quality of the display device.

[0043] like Figure 1 As shown, a display panel 100 provided in an embodiment of the present disclosure includes a dimming liquid crystal panel 2 and a display liquid crystal panel 1 which are stacked, wherein:

[0044] The display liquid crystal panel 1 includes a plurality of sub-pixels 12 arranged in an array and defined by a first grid structure 11;

[0045] The dimming liquid crystal panel 2 is located at the light incident side of the display liquid crystal panel 1, and includes a plurality of dimming pixels 22 arranged in an array and defined by a second grid structure 21;

[0046] The second grid structure 21 includes a plurality of shading light lines 211 extending in a wave-like shape along the row direction, and the wave period of the shading light lines 211 includes a first part and a second part, the first part includes a first segment 211a and a second segment 211b connecting adjacent wave valley points and wave peak points of the shading light lines 211, and the projection lengths of the first segment 211a and the second segment 211b in the row direction are not equal, and the second part includes a third segment 211c symmetrical with the second segment 211b in the column direction, and a fourth segment 211d symmetrical with the first segment 211a in the column direction.

[0047] The structure and working principle of the display liquid crystal panel 1 are similar to the conventional technology and related technology mentioned above, and such description will not be repeated. Figure 1 As shown in the enlarged view at Q of FIG. 1 , the first grid structure 11 includes: a plurality of first gate lines 111 extending in the row direction and a plurality of first data lines 112 extending in the column direction, and a shading matrix 113 located on the side of the first gate lines 111 and the first data lines 112 away from the dimming liquid crystal panel 2, the line widths of the first gate lines 111 and the first data lines 112 are both smaller than the line width of the shading matrix 113, and the first gate lines 111 and the first data lines 112 overlap with the shading matrix 113 in a direction perpendicular to the display liquid crystal panel 1. The line width of the gate line is usually larger than the line width of the data line, so the line width of the row-direction extending portion of the shading matrix 113 is generally larger than the line width of the column-direction extending portion.

[0048] It can be understood that, in order to support the grayscale display of the sub-pixel 12, a first thin film transistor (not shown in the figure) is further provided corresponding to each sub-pixel 12, and the first thin film transistor is provided at the intersection of the first gate line 111 and the first data line 112. When observed from the light-emitting side of the display liquid crystal panel 1, the first thin film transistor, the first gate line 111, and the first data line 112 are not visible because they are blocked by the light-shielding matrix 113.

[0049] The dimming liquid crystal panel 2 uses the dimming pixels 22 as control units to achieve regional dimming of the picture. Figure 1 As shown, the dimming pixels 22 of the dimming liquid crystal panel 2 are defined by the second grid structure 21. Figure 1 As shown in the enlarged view at P of the figure, the second grid structure 21, in addition to the above-mentioned shielding line 211, also includes a plurality of second gate lines 212 extending in the row direction and a plurality of second data lines 213 extending in the column direction. The second gate line 212 and the second data line 213 are located on the side of the shielding line 211 away from the display liquid crystal panel 1. The second gate line 212 has a substantially same shape as the shielding line 211, but the line width of the second gate line 212 is less than the line width of the shielding line 211, and the second gate line 212 overlaps the shielding line 211 in a direction perpendicular to the display liquid crystal panel 1. Observed from the light-emitting side of the dimming liquid crystal panel 2, the second gate line 212 is not visible due to being blocked by the shielding line 211. In addition, the line width of the second data line 213 is much smaller than that of the second gate line 212, and basically does not cause light leakage between adjacent dimming pixels, so the second data line 213 does not need to be blocked in the dimming liquid crystal panel 2. The second data line 213 can extend in a straight line shape, or it can extend in a zigzag wave shape as shown in the figure. Designing the second data line 213 to extend in a zigzag wave shape can make the difference between the first grid structure 11 and the second grid structure 21 more obvious, thereby being more conducive to eliminating moiré patterns.

[0050] The main layer structure of the dimming liquid crystal panel 2 includes an array substrate and an opposing substrate that are relatively arranged to form a liquid crystal box, and a liquid crystal located between the array substrate and the opposing substrate, wherein the opposing substrate is closer to the display liquid crystal panel relative to the array substrate. The liquid crystal box structure of the dimming liquid crystal panel 2 is similar to that of the display liquid crystal panel 1, but there is no need to set a filter layer on the dimming liquid crystal panel 2. The above-mentioned second gate line 212 and second data line 213 are arranged on the array substrate. In order to realize the control of the dimming pixel 22, a second thin film transistor (not shown in the figure) is also arranged corresponding to each dimming pixel 22, and the second thin film transistor is arranged at the intersection of the second gate line 212 and the second data line 213. The shading line 211 can be arranged on the opposing substrate.

[0051] The specific shape of the shading line 211 of the dimming liquid crystal panel 2 is not limited. For example, the shading line 211 may extend in a curved wave shape or a broken wave shape as shown in the figure, both of which can achieve a good effect of eliminating moiré.

[0052] According to the principle that the straight line between two points is the shortest, in the present invention Figure 1In the embodiment shown, in order to minimize the overlapping area between the shielding line 211 and the sub-pixel 12, thereby increasing the aperture ratio of the sub-pixel 12, the shielding line 211 is designed to extend in a zigzag wave shape, and the first segment 211a, the second segment 211b, the third segment 211c and the fourth segment 211d are all straight line segments. Of course, the zigzag shape of the shielding line is not limited to Figure 1 As shown, it can also be other styles, for example, Figure 3 As shown, in another embodiment of the present disclosure, the first segment 211a, the second segment 211b, the third segment 211c and the fourth segment 211d may all be arc segments. In yet another embodiment of the present disclosure, the broken line shape of the shading line may also be that the first segment is an arc segment, the second segment is a straight line segment, the third segment is a straight line segment, and the fourth segment is an arc segment. The shapes of the shading line are not listed here one by one.

[0053] In the embodiment of the present disclosure, the projection lengths of the first segment 211a and the second segment 211b in the row direction are not equal. Since the third segment 211c is symmetrical with the second segment 211b in the column direction, and the fourth segment 211d is symmetrical with the first segment 211a in the column direction, the projection lengths of the third segment 211c and the fourth segment 211d in the row direction are also not equal. Figure 1 As shown, in this embodiment, the projected length of the first segment 211a in the row direction is approximately the width of 4 sub-pixels, and the projected length of the second segment 211b in the row direction is approximately the width of 2 sub-pixels. Correspondingly, the projected length of the third segment 211c in the row direction is approximately the width of 2 sub-pixels, and the projected length of the fourth segment 211d in the row direction is approximately the width of 4 sub-pixels.

[0054] In other embodiments of the present disclosure, the projected lengths of the first segment and the second segment in the row direction may also be designed to be other ratios as required, for example, Figure 4 As shown, the projection length of the first segment 211a in the row direction is approximately the width of 5 sub-pixels, the projection length of the second segment 211b in the row direction is approximately the width of 1 sub-pixel, and accordingly, the projection length of the third segment 211c in the row direction is approximately the width of 1 sub-pixel, and the projection length of the fourth segment 211d in the row direction is approximately the width of 5 sub-pixels.

[0055] In some embodiments of the present disclosure, the ends of the first segment 211a, the second segment 211b, the third segment 211c, and the fourth segment 211d of the light shielding line 211 overlap with the first grid structure 11 in a direction perpendicular to the display liquid crystal panel 1. To facilitate the design of the second data line 213 and achieve a better effect of eliminating moiré, the intersection of the ends of the first segment 211a, the second segment 211b, the third segment 211c, and the fourth segment 211d overlap with the first grid structure 11 in a direction perpendicular to the display liquid crystal panel 1.

[0056] like Figure 1 As shown, each row of sub-pixels 12 of the display liquid crystal panel 1 includes a plurality of pixel units 120, and each pixel unit 120 includes a first sub-pixel 121, a second sub-pixel 122, and a third sub-pixel 123 of different colors and arranged in sequence, and the colors of the sub-pixels in the same column are the same. The resolution of the dimming pixel 22 can be designed according to the fineness requirements of the regional dimming. In the embodiment of the present disclosure, the area of ​​the dimming pixel 22 is not less than the area of ​​the pixel unit 120. For example, in some embodiments, the area of ​​the dimming pixel is approximately four times the area of ​​the pixel unit. In other embodiments, the area of ​​the dimming pixel is approximately 16 times the area of ​​the pixel unit. In yet other embodiments, the area of ​​the dimming pixel is approximately 1.5 times the area of ​​the pixel unit. The area ratio of the dimming pixel to the pixel unit can also be designed to other values, which are not listed here one by one. Taking into account the specific structure and manufacturing errors of the first grid structure 11 and the second grid structure 21, in the present disclosure, the term "approximately" should be understood as within a certain error range.

[0057] like Figure 2a As shown, since the human eye is like a light receiver, different areas of the picture are viewed at different viewing angles. When the human eye views the display panel 100, since the dimming liquid crystal panel 1 and the display liquid crystal panel 2 are stacked with a certain thickness, and different materials have different refractive indices, this causes the pixel patterns of the two to be visually misaligned at different viewing angles, and the greater the difference in viewing angles, the more obvious the visual misalignment.

[0058] like Figure 2b As shown, it is a comparison diagram of the display screen of the related technology in the corresponding area viewed by the human eye from the viewing angle A and the viewing angle B. In the related technology, the phases of adjacent shading lines 211' are the same, that is, the crests of adjacent shading lines 211' are located on the same column line, and the troughs are on the same column line. Taking into account the difference in line width between the row-direction extension part and the column-direction extension part of the shading matrix of the display liquid crystal panel, it can be seen from the figure that under the viewing angle A, the shading line 211' perceived by the human eye in the corresponding area has a larger overlap area with the red first sub-pixel 121' and the blue third sub-pixel 123', and a smaller overlap area with the green second sub-pixel 122', so the overall color of this area is green in the human eye. At viewing angle B, due to the existence of visual dislocation, the shielding line 211' perceived by the human eye in the corresponding area deviates to the left by about the width of a sub-pixel, so that the overlapping area of ​​the shielding line 211' perceived by the human eye with the blue third sub-pixel 123' and the green second sub-pixel 122' is larger, and the overlapping area with the red first sub-pixel 121' is smaller, so the overall color of this area is reddish in the human eye. When the human eye looks at the two areas at the same time, the fluctuation of color temperature in the two areas can be clearly felt, and thus the rainbow pattern can be felt.

[0059] In the disclosed embodiment, a waveform cycle of the shading line includes a first part and a second part that are symmetrical in shape relative to the column direction, and the first part and the second part each include two sections with different lengths of upward projection in the row, so that the overlapping area of ​​the first part with the first sub-pixel, the second sub-pixel and the third sub-pixel can be compensated by the overlapping area of ​​the second part with the first sub-pixel, the second sub-pixel and the third sub-pixel, so that the overlapping area of ​​the shading line in a certain area with the sub-pixels of different colors is basically averaged as a whole, and the color temperature of the display panel in different areas is basically consistent. At different viewing angles, although visual dislocation still exists, the human eye will not feel the obvious fluctuation of color temperature, so the rainbow pattern is effectively improved.

[0060] exist Figure 1 In the embodiment shown, along the column direction, the first part (i.e., the first section 211a and the second section 211b) and the second part (i.e., the third section 211c and the fourth section 211d) of the shielding light 211 are arranged alternately, that is, the waveform phase difference of any two adjacent shielding light lines 211 is As shown in the figure, in the A1 region, the overlapping area of ​​the shading line 211 with the second sub-pixel 122 and the third sub-pixel 123 is large, and the overlapping area with the first sub-pixel 121 is small; in the A2 region, the overlapping area of ​​the shading line 211 with the first sub-pixel 121 and the second sub-pixel 122 is large, and the overlapping area with the third sub-pixel 123 is small. In the A3 region, the overlapping area of ​​the shading line 211 with the first sub-pixel 121 and the second sub-pixel 122 is large, and the overlapping area with the third sub-pixel 123 is small; in the A4 region, the overlapping area of ​​the shading line 211 with the second sub-pixel 122 and the third sub-pixel 123 is large, and the overlapping area with the first sub-pixel 121 is small.

[0061] In the A1 region and the A2 region, the areas where the shading line 211 overlaps with the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can compensate for each other. Similarly, in the A3 region and the A4 region, the areas where the shading line 211 overlaps with the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can compensate for each other. In the A1 region and the A3 region, the areas where the shading line 211 overlaps with the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can compensate for each other. In the A2 region and the A4 region, the areas where the shading line 211 overlaps with the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can compensate for each other. For the A1 region, the A2 region, the A3 region, and the A4 region as a whole, the areas where the shading line 211 overlaps with the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 are substantially average, and the improvement effect on the rainbow pattern is better.

[0062] The inventors of this application use Figure 1 and Figure 2b The color temperature of the two 65-inch display panel products was simulated respectively, and the comparison results are as follows: Figure 5 As shown, curve 01 is Figure 2b The color temperature simulation curve of the related art is shown, and curve 02 is the color temperature simulation curve of the present invention. Figure 1 Color temperature simulation curve of the embodiment shown. It can be seen that as the viewing angle of the human eye changes, the color temperature curve of the display panel of the related technology fluctuates significantly, and the color temperature fluctuation amplitude is about 3000k, while the color temperature curve of the display panel of the embodiment of the present disclosure is relatively gentle, and the color temperature fluctuation amplitude is about 800k. The fluctuation of the color temperature of the picture can directly reflect the presentation of the rainbow pattern. Compared with the related technology, the color temperature fluctuation amplitude of the display panel of the embodiment of the present disclosure is smaller, and the human eye basically does not feel the rainbow pattern. Therefore, the display picture quality is significantly improved.

[0063] In one embodiment of the present disclosure, Figure 6a As shown, the dimming liquid crystal panel 2 and the display liquid crystal panel 1 are bonded by transparent optical adhesive 3, and the manufacturing process is relatively simple and easy to repair. Figure 6b As shown, the dimming liquid crystal panel 2 and the display liquid crystal panel 1 may also share the same manufacturing substrate on the adjacent side, thereby facilitating the reduction of the thickness of the display panel and the reduction of the manufacturing cost.

[0064] The embodiments of the present disclosure also provide a display device, including a display panel of any of the above embodiments. The display device can dim the finer areas of the picture, with excellent contrast, and effectively improve the moiré and rainbow patterns of the picture. Therefore, the picture quality is high, thereby significantly improving the user experience. The specific product type of the display device is not limited, for example, it can be a monitor, a tablet computer, a laptop computer, a television, an ATM device, an electronic paper, a display screen, etc.

[0065] Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A display panel, comprising: A display liquid crystal panel, comprising a plurality of sub-pixels arranged in an array and defined by a first grid structure; A dimming liquid crystal panel, located at the light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel comprising a plurality of dimming pixels arranged in an array and defined by a second grid structure; Among them, the second grid structure includes a plurality of shading line lines extending in a waveform along the row direction, the waveform period of the shading line includes a first part and a second part, the first part includes a first segment and a second segment connecting adjacent waveform valley points and waveform peak points of the shading line, the projection lengths of the first segment and the second segment in the row direction are different, the second part includes a third segment symmetrical with the second segment in the column direction, and a fourth segment symmetrical with the first segment in the column direction.

2. The display panel according to claim 1, wherein: The shading line extends in a curved wave shape or a folded wave shape.

3. The display panel according to claim 1, wherein: The shading line extends in a zigzag wave shape; The first segment and the second segment are straight line segments respectively; Alternatively, the first segment and the second segment are arc segments respectively; Alternatively, the first segment is an arc segment, and the second segment is a straight line segment.

4. The display panel according to any one of claims 1 to 3, wherein: Along the column direction, the first parts and the second parts are arranged alternately.

5. The display panel according to claim 4, wherein: An end of the first segment, an end of the second segment, an end of the third segment, and an end of the fourth segment overlap with the first grid structure in a direction perpendicular to the display liquid crystal panel; or The intersection points of the end of the first segment, the end of the second segment, the end of the third segment, and the end of the fourth segment with the first grid structure overlap in a direction perpendicular to the display liquid crystal panel.

6. The display panel according to claim 5, wherein: Each row of sub-pixels includes a plurality of pixel units, each of the pixel units includes a first sub-pixel, a second sub-pixel and a third sub-pixel of different colors and arranged in sequence, and the sub-pixels in the same column have the same color; The area of ​​the dimming pixel is not less than the area of ​​the pixel unit.

7. The display panel according to claim 6, wherein: The area of ​​the dimming pixel is approximately 4 times the area of ​​the pixel unit; The orthographic projection of the first segment on the display liquid crystal panel roughly coincides with the diagonal line of the area where the 4*2 sub-pixels are located, and the orthographic projection of the second segment on the display liquid crystal panel roughly coincides with the diagonal line of the area where the 2*2 sub-pixels are located.

8. The display panel according to claim 1, wherein: The first grid structure includes: a plurality of first gate lines extending in a row direction and a plurality of first data lines extending in a column direction, and a shading matrix located on a side of the first gate lines and the first data lines away from the dimming liquid crystal panel, the line widths of the first gate lines and the first data lines are both smaller than the line width of the shading matrix, and the first gate lines and the first data lines overlap with the shading matrix in a direction perpendicular to the display liquid crystal panel.

9. The display panel according to claim 1, wherein: The second grid structure also includes: a plurality of second gate lines extending in a row direction and a plurality of second data lines extending in a column direction, the second gate lines and the second data lines are located on a side of the shading line away from the display liquid crystal panel, the line width of the second gate line is smaller than the line width of the shading line, and the second gate line overlaps with the shading line in a direction perpendicular to the display liquid crystal panel.

10. The display panel according to claim 9, wherein: The second data line extends in a zigzag wave shape.

11. The display panel according to claim 1, wherein: The dimming liquid crystal panel and the display liquid crystal panel are bonded by transparent optical adhesive; or, the dimming liquid crystal panel and the display liquid crystal panel share the same manufacturing substrate on the adjacent side.

12. A display device comprising the display panel according to any one of claims 1 to 11.

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