A display panel and display device

Abstract

This invention discloses a display panel and display device. By setting a light-shielding structure within a sub-pixel unit, and having the light-shielding structure overlap with at least a portion of the liquid crystal layer where the liquid crystal azimuth angle is greater than 45°, this invention utilizes an optimized design that uses a light-shielding structure to block the liquid crystal azimuth angle region greater than 45°. This reduces the Gamma curve shift at side viewing angles, thus improving color shift. Therefore, this invention can effectively improve UV protection. 2 The view character bias difference is displayed in Mode A.

Description

Technical Field

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

[0002] With the development of display technology, flat panel displays such as Liquid Crystal Displays (LCDs) have become widely used in various consumer electronics products, including mobile phones, televisions, personal digital assistants, digital cameras, laptops, and desktop computers, due to their advantages such as high image quality, energy saving, thin body, and wide application range. Most LCD devices on the market today are backlit color filter substrates, comprising a liquid crystal display panel and a backlight module. Typically, an LCD panel consists of a color filter (CF) substrate, a thin film transistor (TFT) substrate (also called an array substrate), and liquid crystal (LC) sandwiched between the CF substrate and the array substrate. The working principle of an LCD panel is to place liquid crystal molecules between the parallel CF substrate and the array substrate, with numerous vertical and horizontal data lines and scan lines in between. The orientation of the liquid crystal molecules is controlled by whether or not the data lines and scan lines are energized, thus refracting the light from the backlight module to produce an image.

[0003] UV 2 Ultra Violet Vertical Alignment (VA) technology is a vertical alignment (VA) panel technology that uses ultraviolet light for liquid crystal alignment. By using UV... 2 Technology A eliminates the need for the slits and protrusions currently used in VA mode LCD panels for aligning liquid crystal molecules. Therefore, utilizing UV... 2 Liquid crystal display panels manufactured using technology A can improve aperture ratio, contrast ratio, and response speed, and can significantly reduce production processes. Summary of the Invention

[0004] This invention provides a display panel and a display device to improve the problem of color shift in the displayed image.

[0005] An embodiment of the present invention provides a display panel, including an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer disposed between the array substrate and the counter substrate. An alignment layer is disposed on the side of at least one of the array substrate and the counter substrate facing the liquid crystal layer. The preset alignment angle of the liquid crystal layer includes an angle of 45° with the horizontal direction.

[0006] The array substrate includes a plurality of sub-pixel units arranged in an array. Each sub-pixel unit includes a light-shielding structure, which overlaps with at least a portion of the liquid crystal azimuth angle greater than 45° in a direction perpendicular to the array substrate.

[0007] Optionally, in the display panel provided in the embodiments of the present invention, the light-shielding structure overlaps with all areas of the liquid crystal with an azimuth angle greater than 45°.

[0008] Optionally, in the display panel provided in the embodiments of the present invention, the sub-pixel unit includes a pixel electrode, the pixel electrode includes a plurality of electrode blocks, the alignment layer includes a plurality of alignment regions corresponding one-to-one with the electrode blocks, and at least a portion of the alignment regions have a region with a liquid crystal azimuth angle greater than 45°.

[0009] Optionally, in the display panel provided in the embodiments of the present invention, the pixel electrodes are divided into a first group and a second group that are spaced apart. The first group and the second group each include four electrically connected electrode blocks. Multiple slits are formed on each electrode block. The multiple slits on the same electrode block extend in the same direction, while the slits on two adjacent electrode blocks extend in different directions.

[0010] Optionally, in the display panel provided in the embodiments of the present invention, the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group of electrode blocks and the second group of electrode blocks is 45°, and at least a portion of the edge regions of each alignment region corresponding to the first group of electrode blocks and the second group of electrode blocks have a region with a liquid crystal azimuth angle greater than 45°.

[0011] Optionally, in the display panel provided in the embodiments of the present invention, a plurality of first slits are formed on each of the electrode blocks in the first group, and a plurality of second slits are formed on each of the electrode blocks in the second group;

[0012] The first slits on each of the electrode blocks in the first group form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively, and the first slits on two adjacent electrode blocks in the first group are perpendicular to each other. The second slits on each of the electrode blocks in the second group form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively, and the second slits on two adjacent electrode blocks in the second group are perpendicular to each other.

[0013] The light-shielding structure includes a first light-shielding structure corresponding to the first group of electrode blocks and a second light-shielding structure corresponding to the second group of electrode blocks. The shape of the first light-shielding structure is as follows: The shape of the second light-shielding structure is as follows: type.

[0014] Optionally, in the display panel provided in the embodiments of the present invention, the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group of electrode blocks is less than 45°, and the azimuth angle of the liquid crystal in each alignment region corresponding to the first group of electrode blocks is less than 45°.

[0015] The preset alignment angle of the liquid crystal layer in each alignment region corresponding to the second group of electrode blocks is 45°, and at least a portion of the edge regions of each alignment region corresponding to the second group of electrode blocks have a region with a liquid crystal azimuth angle greater than 45°.

[0016] Optionally, in the display panel provided in the embodiments of the present invention, a plurality of first slits are formed on each of the electrode blocks in the first group, and a plurality of second slits are formed on each of the electrode blocks in the second group;

[0017] The first slits on each of the electrode blocks in the first group form angles of 30°, -30°, 150° and -150° with the horizontal direction, respectively. The second slits on each of the electrode blocks in the second group form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively. The second slits on two adjacent electrode blocks in the second group are perpendicular to each other.

[0018] The orthographic projection of the light-shielding structure on the array substrate does not overlap with the orthographic projection of the first group of electrode blocks on the array substrate;

[0019] The orthographic projection of the light-shielding structure on the array substrate overlaps with the orthographic projection of the second group of electrode blocks on the array substrate. The shape of the light-shielding structure is as follows: type.

[0020] Optionally, in the display panel provided in the embodiments of the present invention, the material of the light-shielding structure includes metal.

[0021] Optionally, the display panel provided in the embodiments of the present invention further includes multiple insulated and intersecting gate lines and multiple data lines, wherein the multiple gate lines and multiple data lines define the multiple sub-pixel units; wherein,

[0022] The light-shielding structure is disposed on the same layer as the grid line.

[0023] Optionally, the display panel provided in the embodiments of the present invention further includes multiple insulated and intersecting gate lines and multiple data lines, wherein the multiple gate lines and multiple data lines define the multiple sub-pixel units; wherein,

[0024] The light-shielding structure is arranged in the same layer as the data cable.

[0025] Optionally, the display panel provided in the embodiments of the present invention further includes: a first polarizer located on the side of the array substrate facing away from the opposing substrate, and a second polarizer located on the side of the opposing substrate facing away from the array substrate; the absorption axis of the first polarizer and the absorption axis of the second polarizer are perpendicular to each other.

[0026] Accordingly, embodiments of the present invention also provide a display device, including the display panel described in any of the above embodiments of the present invention.

[0027] The beneficial effects of the embodiments of the present invention are as follows:

[0028] The present invention provides a display panel and display device that, by setting a light-shielding structure within a sub-pixel unit, and having the light-shielding structure overlap with at least a portion of the liquid crystal layer where the liquid crystal azimuth angle is greater than 45°, utilizes an optimized design in the present invention to block the liquid crystal azimuth angle region greater than 45°. This design reduces the Gamma curve shift and improves color shift issues. Therefore, the present invention can effectively improve UV protection. 2 Color shift difference in viewing angle of the A mode display panel. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the alignment angle of pixel electrodes in the prior art;

[0030] Figure 2 This is a schematic diagram comparing the brightness differences of each alignment region when the polarization angles are 30°, 45°, and 60°, respectively, corresponding to polarization by 0° / 90° and 30° / 120° polarizers.

[0031] Figure 3 A schematic diagram of the shift curve of a liquid crystal display panel under different gray levels;

[0032] Figure 4 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of a sub-pixel unit in a display panel provided by an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram illustrating another structure of a sub-pixel unit in a display panel, provided by an embodiment of the present invention.

[0035] Figure 7 This is a schematic diagram of the shift curve of another type of Gamma curve for liquid crystal display panels at different gray levels. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, a detailed description of a display panel and display device provided by the present invention will be given below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are for illustration and explanation only and are not intended to limit the present invention. Furthermore, the embodiments and features described in this application can be combined with each other unless otherwise specified.

[0037] The thickness, size, and shape of each thin film layer in the attached figures do not reflect the actual proportions of the display panel; they are merely intended to illustrate the content of this invention.

[0038] For the use of UV 2 For liquid crystal display panels fabricated using technology A, each sub-pixel unit's pixel electrode region corresponds to at least four alignment regions (taking four alignment regions as an example). For example... Figure 1 As shown, if the pixel electrode is divided into four regions, the first region A1 located in the upper right corner has an orientation angle of 135° with the horizontal direction, the second region A2 located in the upper left corner has an orientation angle of 45° with the horizontal direction, the third region A3 located in the lower left corner has an orientation angle of -45° with the horizontal direction, and the fourth region A4 located in the lower right corner has an orientation angle of -135° with the horizontal direction.

[0039] When a display panel displays an image, the pixel electrode and common electrode of each sub-pixel unit form an electric field, which applies an electric force to the liquid crystal molecules located above the pixel electrode. Before the electric field is applied, the liquid crystal molecules in the same alignment region have the same initial alignment angle. After the electric field is applied, the liquid crystal molecules can tilt along the alignment angle of the corresponding region, allowing the display panel to display the corresponding image.

[0040] Ideally, the liquid crystal azimuth angle is 45°. However, due to limitations in materials, manufacturing processes, and the influence of different alignment angles at the alignment region boundaries, liquid crystal molecules with azimuth angles less than 45° and greater than 45° may coexist within the same alignment region. The inventors discovered that the brightness of the displayed image varies depending on the azimuth angle. For example, the transmittance of a liquid crystal display panel conforms to the formula... Assuming the phase difference δ equals π, the liquid crystal azimuth angle When polarized at 30°, 45°, and 60° using a traditional 0° / 90° polarizer (the angle between the absorption axes of the upper and lower polarizers and the horizontal direction), there is no significant difference in brightness between adjacent domains (alignment regions); however, when using a 30° / 120° polarizer, the difference in brightness between adjacent domains at 30° and 60° azimuth angles is significant; for example... Figure 2 As shown, Figure 2The first row shows the brightness differences of each alignment region when the azimuth angle is 30°, corresponding to polarization with 0° / 90° and 30° / 120° polarizers, respectively. Figure 2 The second row shows the brightness differences of each alignment region when the azimuth angle is 45°, corresponding to polarization with 0° / 90° and 30° / 120° polarizers, respectively. Figure 2 The third row shows the brightness differences in each alignment region when the polarization angle is 60°, corresponding to 0° / 90° and 30° / 120° polarizers, respectively. It can be seen that when the azimuth angle is 30°, quadrants ① and ③ are brighter than quadrants ② and ④; when the azimuth angle is 60°, quadrants ① and ③ are darker than quadrants ② and ④. Therefore... Figure 2 In the last column, among the four alignment regions at the top and bottom, the relatively dark areas in quadrants ① and ③ are areas with azimuth angles greater than 45°, and the relatively bright areas in quadrants ② and ④ are areas with azimuth angles greater than 45°. This experiment verifies the position of each alignment region in a liquid crystal display panel with an ideal azimuth angle of 45°, indicating whether the azimuth angle is greater than or less than 45° (the last column shows the positions of each alignment region with azimuth angles greater than and less than 45°).

[0041] Research has found that when the azimuth angle is 60°, the Gamma curve of the liquid crystal display panel will experience a significant shift, such as... Figure 3 As shown, Figure 3 This is a schematic diagram of the shift of the Gamma curve of a liquid crystal display panel under different gray levels. Curve E is the standard Gamma curve at the front viewing angle, and curve F is the Gamma curve at a side viewing angle of 60° in the prior art. It can be seen that the Gamma curve at a side viewing angle of 60° shifts more significantly than the standard Gamma curve, which causes color shift in the image displayed by the liquid crystal display panel.

[0042] To address the issue of color shift in the Gamma voltage of a liquid crystal display panel when the azimuth angle is 60° (greater than 45°), this invention provides a display panel, such as... Figure 4 As shown, the system includes an array substrate 1 and a counter substrate 2 disposed opposite to each other, and a liquid crystal layer 3 disposed between the array substrate 1 and the counter substrate 2. An alignment layer is disposed on the side of at least one of the array substrate 1 and the counter substrate 2 facing the liquid crystal layer 3 (in this embodiment of the invention, a first alignment layer 4 is disposed on the side of the array substrate 1 facing the liquid crystal layer 3, and a second alignment layer 5 is disposed on the side of the counter substrate 2 facing the liquid crystal layer 3). The preset alignment angle of the liquid crystal layer 3 includes an angle of 45° with the horizontal direction.

[0043] The array substrate 1 includes multiple sub-pixel units arranged in an array, such as... Figure 5 and Figure 6As shown, Figure 5 and Figure 6 The schematic diagram shows only one sub-pixel unit. The sub-pixel unit includes a light-shielding structure 6. In the direction perpendicular to the array substrate 1, the light-shielding structure 6 coincides with at least a portion of the liquid crystal azimuth angle greater than 45°.

[0044] The display panel provided in this embodiment of the invention, by setting a light-shielding structure within the sub-pixel unit, and having the light-shielding structure overlap with at least a portion of the liquid crystal azimuth angle greater than 45° in the liquid crystal layer, utilizes the optimized design of the light-shielding structure to block the liquid crystal azimuth angle greater than 45°. This design reduces the Gamma curve shift and improves the color shift problem. Therefore, this invention can effectively improve UV protection. 2 Color shift difference in the viewing angle of the A mode display panel.

[0045] Specifically, the liquid crystal azimuth angle refers to the angle between the projection of the liquid crystal molecule's orientation vector onto the (X, Y) plane and the X-axis.

[0046] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the light-shielding structure 6 overlaps with all areas of the liquid crystal with an azimuth angle greater than 45°. This minimizes the Gamma curve shift, thereby further optimizing and improving the color shift problem.

[0047] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figures 4-6 As shown, the sub-pixel unit includes a pixel electrode. In vertical alignment mode liquid crystal display panels, multi-domain pixel structures are often used to improve color shift issues. In this case, reference is made to... Figure 5 The pixel electrode comprises multiple electrode blocks, for example, two groups (Group B1 and Group B2), each group comprising four electrode blocks. Group B1 comprises a first electrode block 71, a second electrode block 72, a third electrode block 73, and a fourth electrode block 74, while Group B2 comprises a fifth electrode block 75, a sixth electrode block 76, a seventh electrode block 77, and an eighth electrode block 78. The alignment layers (4 and 5) comprise multiple alignment regions (i.e., eight alignment regions) corresponding one-to-one with the electrode blocks, with at least some alignment regions having a liquid crystal azimuth angle greater than 45°. In this embodiment of the invention, the region with a liquid crystal azimuth angle greater than 45° is shielded by a light-shielding structure 6, which can reduce the Gamma curve shift at side viewing angles, thereby improving the color shift problem of the liquid crystal display panel.

[0048] It should be noted that, in this embodiment of the invention, a first alignment layer 4 is disposed on the side of the array substrate 1 facing the liquid crystal layer 3, and a second alignment layer 5 is disposed on the side of the opposing substrate 2 facing the liquid crystal layer 3. Of course, the first alignment layer 4 can also be disposed only on the side of the array substrate 1 facing the liquid crystal layer 3, or the second alignment layer 5 can be disposed only on the side of the opposing substrate 2 facing the liquid crystal layer 3; both methods can achieve the alignment of the liquid crystal molecules in the liquid crystal layer 3. Specifically, the alignment layer can achieve the vertical alignment of the liquid crystal molecules through ultraviolet irradiation, i.e., through UV... 2 Technology A aligns the liquid crystal molecules in the region where the pixel electrode is located, causing the liquid crystal molecules to tilt in a preset direction. Under the action of the driving electric field of the pixel electrode, the liquid crystal molecules tilt and deflect in the preset direction.

[0049] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 and Figure 6As shown, the pixel electrodes are divided into a first group B1 and a second group B2 spaced apart. Both groups B1 and B2 include four electrically connected electrode blocks. For example, the first group B1 includes a first electrode block 71, a second electrode block 72, a third electrode block 73, and a fourth electrode block 74, all electrically connected. The second group B2 includes a fifth electrode block 75, a sixth electrode block 76, a seventh electrode block 77, and an eighth electrode block 78, all electrically connected. Multiple slits (L1 and L2) are formed on each electrode block. The slits on the same electrode block extend in the same direction. For example, the slits (L1) on the first electrode block 71 extend in the same direction, as do the slits (L1) on the second electrode block 72, and so on. The slits on adjacent electrode blocks extend in different directions. For example, in the first group B1, the slits (L1) on the first electrode block 71 and... The extension directions of the slits (L1) on the second electrode block 72 are different. The extension directions of the slits (L1) on the first electrode block 71 and the third electrode block 73 are different. The extension directions of the slits (L1) on the third electrode block 73 and the fourth electrode block 74 are different. The extension directions of the slits (L1) on the second electrode block 72 and the fourth electrode block 74 are different. Adjacent electrode blocks are electrically connected through branch electrodes extending along the row or column direction. For example, the first electrode block and the second electrode block are electrically connected through branch electrodes extending along the column direction, i.e., the branch electrodes are located in the region between the first electrode block and the second electrode block; the first electrode block and the third electrode block are electrically connected through branch electrodes extending along the row direction, i.e., the branch electrodes are located in the region between the first electrode block and the third electrode block. Because the slit extension directions of different electrode blocks in the same sub-pixel unit are different, the directions of the driving electric fields on the liquid crystal molecules are also different. In operation, each electrode block forms a driving electric field with the common electrode. Since the extension direction of the slits in each electrode block is different, the driving electric fields generated by each electrode block under the same potential are also different. The deflection direction of the liquid crystal is different under the action of different driving electric fields, which can effectively improve the color shift phenomenon of the sub-pixel unit.

[0050] like Figure 5 and Figure 6 As shown, multiple electrode blocks in each sub-pixel unit are arranged in a four-row, two-column array. The area where each electrode block is located is considered a domain. The pixel electrodes in each sub-pixel unit are divided into a first group B1 and a second group B2 that are spaced apart. Each group can be driven by a thin-film transistor. Each group includes four electrode blocks, which correspond to four alignment regions. The alignment direction of each alignment region is different to achieve an 8-domain display mode.

[0051] Specifically, by means of charge sharing or capacitor discharge, the display effect corresponding to the first group of B1 electrode blocks and the display effect corresponding to the second group of B2 electrode blocks can be made to have a difference in brightness, thereby achieving the effect of octetization of 4-domain pixels and thus improving the display color deviation.

[0052] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 As shown, the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group B1 electrode block and the second group B2 electrode block is 45°. That is, the angle between the slit (L1) on the first electrode block 71 and the horizontal direction is 45°, the angle between the slit (L1) on the second electrode block 72 and the horizontal direction is 135°, the angle between the slit (L1) on the third electrode block 73 and the horizontal direction is -45°, the angle between the slit (L1) on the fourth electrode block 74 and the horizontal direction is -135°, and the angle between the fifth electrode block 75 and the horizontal direction is -135°. The slit (L2) on electrode block 75 forms a 45° angle with the horizontal direction, the slit (L2) on the sixth electrode block 76 forms a 135° angle with the horizontal direction, the slit (L2) on the seventh electrode block 77 forms a -45° angle with the horizontal direction, and the slit (L2) on the eighth electrode block 78 forms a -135° angle with the horizontal direction. At least a portion of the edge regions of each alignment region corresponding to the first group B1 electrode block and the second group B2 electrode block have liquid crystal azimuth angles greater than 45°. By using the light-shielding structure 6 to block the liquid crystal azimuth angles greater than 45° in each alignment region, the Gamma curve shift at the side viewing angle can be reduced, thereby improving the color shift of the displayed image.

[0053] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 As shown, multiple first slits L1 are formed on each electrode block of the first group B1, and multiple second slits L2 are formed on each electrode block of the second group B2.

[0054] The first slits L1 on each electrode block of the first group B1 form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively. The first slits L1 on two adjacent electrode blocks in the first group B1 are perpendicular to each other. The second slits L2 on each electrode block of the second group B2 form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively. The second slits L2 on two adjacent electrode blocks in the second group B2 are perpendicular to each other.

[0055] according to Figure 2 In the last column of the diagram, at positions with azimuth angles greater than 45° and less than 45° in each alignment region, the light-shielding structure 6 can be configured to include a first light-shielding structure 61 corresponding to the first group of B1 electrode blocks and a second light-shielding structure 62 corresponding to the second group of B2 electrode blocks. The shape of the first light-shielding structure 61 can be... type, cover Figure 2 The position corresponding to the B1 electrode block in the first group of the last column is at an azimuth angle greater than 45°. See details. Figure 5 The first light-shielding structure 61 of the first group B1 includes a structure disposed on the side of the first electrode block 71 and the second electrode block 72 away from the third electrode block 73 and extending along the row direction, and a structure disposed in the middle region between the first electrode block 71 and the second electrode block 72 and the third electrode block 73 and the fourth electrode block 74 and extending along the row direction, and a structure disposed on the side of the first electrode block 71 away from the second electrode block 72 and extending along the column direction, and a structure disposed on the side of the fourth electrode block 74 away from the third electrode block 73 and extending along the column direction. Optionally, the first light-shielding structure 61 can be integrally formed; the shape of the second light-shielding structure 62 can be... type, cover Figure 2 The position corresponding to the second group of the last column, B2 electrode block, with an azimuth angle greater than 45°, is detailed in [reference needed]. Figure 5 The second light-shielding structure 62 included in the second group B2 includes a structure disposed on the side of the seventh electrode block 77 and the eighth electrode block 78 away from the sixth electrode block 76 and extending along the row direction, and a structure disposed in the middle region between the fifth electrode block 75 and the sixth electrode block 76 and the seventh electrode block 77 and the eighth electrode block 78 and extending along the row direction, a structure disposed on the side of the fifth electrode block 75 away from the sixth electrode block 76 and extending along the column direction, and a structure disposed on the side of the eighth electrode block 78 away from the seventh electrode block 77 and extending along the column direction. Optionally, the second light-shielding structure 62 can be integrally formed. In this way, by using the first light-shielding structure 61 and the second light-shielding structure 62 to block the liquid crystal azimuth angle of each alignment region greater than 45°, the Gamma curve shift at the side viewing angle can be reduced, thereby improving the color shift of the displayed image.

[0056] In practical implementation, in order to achieve different display effects in the same sub-pixel unit, the preset alignment angles of the liquid crystal layers corresponding to the first and second groups of electrode blocks in the same sub-pixel unit can be different. For example, in the display panel provided in the embodiments of the present invention, such as... Figure 6 As shown, the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group of B1 electrode blocks is less than 45°. For example, the slit (L1) on the first electrode block 71 makes an angle of 30° with the horizontal direction, the slit (L1) on the second electrode block 72 makes an angle of 150° with the horizontal direction, the slit (L1) on the third electrode block 73 makes an angle of -30° with the horizontal direction, and the slit (L1) on the fourth electrode block 74 makes an angle of -150° with the horizontal direction. The azimuth angle of the liquid crystal in each alignment region corresponding to the first group of B1 electrode blocks is less than 45°. Thus, according to... Figure 2According to the analysis, positions with an azimuth angle of less than 45° do not require shielding;

[0057] The preset alignment angle of the liquid crystal layer in each alignment region corresponding to the second group of B2 electrode blocks is 45°. For example, the slit (L2) on the fifth electrode block 75 has an angle of 45° with the horizontal direction, the slit (L2) on the sixth electrode block 76 has an angle of 135° with the horizontal direction, the slit (L2) on the seventh electrode block 77 has an angle of -45° with the horizontal direction, and the slit (L2) on the eighth electrode block 78 has an angle of -135° with the horizontal direction. At least some edge regions of each alignment region corresponding to the second group of B2 electrode blocks have liquid crystal azimuth angles greater than 45°. In this way, by using the light-shielding structure 6 to block the liquid crystal azimuth angles greater than 45° in each alignment region corresponding to the second group of B2 electrode blocks, the Gamma curve shift can be reduced, thereby improving the color shift of the displayed image.

[0058] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 As shown, multiple first slits L1 are formed on each electrode block of the first group B1, and multiple second slits L2 are formed on each electrode block of the second group B2.

[0059] The first slit L1 on each electrode block of the first group B1 forms an angle of 30° with the horizontal direction, and the second slit L2 on each electrode block of the second group B2 forms an angle of 45° with the horizontal direction. The second slit L2 on two adjacent electrode blocks in the second group B2 are perpendicular to each other.

[0060] according to Figure 2 According to the analysis, the liquid crystal azimuth angle of each alignment region corresponding to the first group of B1 electrode blocks is less than 45°. Thus, each alignment region corresponding to the first group of B1 electrode blocks does not need to be blocked. Therefore, the orthographic projection of the light-shielding structure 6 on the array substrate does not overlap with the orthographic projection of the first group of B1 electrode blocks on the array substrate.

[0061] according to Figure 2 The positions in the last column of the diagram, where the azimuth angles are greater than 45° and less than 45° in each alignment region, allow the orthographic projection of the light-shielding structure 6 on the array substrate 1 to overlap with the orthographic projection of the second group of B2 electrode blocks on the array substrate 1. The shape of the light-shielding structure 6 is as follows: type, cover Figure 2 The position corresponding to the second group of the last column, B2 electrode block, with an azimuth angle greater than 45°, is detailed in [reference needed]. Figure 6The light-shielding structure 6 includes a structure disposed on the side of the seventh electrode block 77 and the eighth electrode block 78 away from the sixth electrode block 76 and extending along the row direction, and a structure disposed in the middle region between the fifth electrode block 75 and the sixth electrode block 76 and the seventh electrode block 77 and the eighth electrode block 78 and extending along the row direction, a structure disposed on the side of the fifth electrode block 75 away from the sixth electrode block 76 and extending along the column direction, and a structure disposed on the side of the eighth electrode block 78 away from the seventh electrode block 77 and extending along the column direction. Optionally, the light-shielding structure 6 can be integrally formed. In this way, by using the light-shielding structure 6 to block the liquid crystal azimuth angle of each alignment region of the second group B2 greater than 45°, the Gamma curve shift at the side viewing angle can be reduced, thereby improving the color shift of the displayed image.

[0062] like Figure 7 As shown, Figure 7 This diagram illustrates the shift of the Gamma curves of a liquid crystal display panel at different gray levels. Curve E is the standard Gamma curve at a normal viewing angle, curve F is the Gamma curve corresponding to a side viewing angle of 60° in the prior art, curve G is the Gamma curve corresponding to the embodiment of the present invention when only the pixel electrode is set as a slit electrode, and curve H is the Gamma curve corresponding to the embodiment of the present invention when the pixel electrode is set as a slit electrode and the area with an azimuth angle greater than 45° is blocked by the light-blocking structure 6. It can be seen that curves G and F have a smaller shift compared to the standard Gamma curve, thus the embodiment of the present invention can solve the color shift problem of the liquid crystal display panel.

[0063] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the material of the light-shielding structure 6 includes metal. Optionally, the light-shielding structure 6 can be disposed on the array substrate 1 or on the opposing substrate 2.

[0064] In a specific implementation, the display panel provided in the embodiments of the present invention further includes multiple insulated and intersecting gate lines and multiple data lines, which define multiple sub-pixel units; wherein,

[0065] The light-shielding structure 6 can be set in the same layer as the grid lines. In this way, the original pattern can be changed when forming the grid lines, and the pattern of the light-shielding structure 6 and the grid lines can be formed in one patterning process. There is no need to add a separate process for preparing the light-shielding structure 6, which can simplify the preparation process, save production costs, and improve production efficiency.

[0066] Of course, the light-shielding structure 6 can also be set in the same layer as the data cable. In this way, only the original pattern needs to be changed when forming the data cable. The pattern of the light-shielding structure 6 and the data cable can be formed in one patterning process without adding a separate process for preparing the light-shielding structure 6. This simplifies the manufacturing process, saves production costs, and improves production efficiency.

[0067] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 4 As shown, it also includes: a first polarizer 8 located on the side of the array substrate 1 facing away from the opposing substrate 2, and a second polarizer 9 located on the side of the opposing substrate 2 facing away from the array substrate 1; the absorption axes of the first polarizer 8 and the second polarizer 9 are perpendicular to each other. The working principles of the first polarizer 8 and the second polarizer 9 are the same as in the prior art, and will not be described in detail here.

[0068] In specific implementation, in the display panel provided in the embodiments of the present invention, such as Figure 4 As shown, it also includes a backlight module 10 located on the side of the first polarizer 8 facing away from the opposing substrate 2, and the backlight module 10 is used to provide backlight. The specific structure of the backlight module 10 is the same as that in the prior art, and will not be described in detail here.

[0069] Based on the same inventive concept, embodiments of the present invention also provide a display device, including the display panel described above in the embodiments of the present invention. This display device can be any product or component with display functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Implementation of this display device can refer to the embodiments of the display panel described above; repeated details will not be elaborated further.

[0070] The present invention provides a display panel and display device that, by setting a light-shielding structure within a sub-pixel unit, and having the light-shielding structure overlap with at least a portion of the liquid crystal layer where the liquid crystal azimuth angle is greater than 45°, utilizes an optimized design to block the liquid crystal azimuth angle region greater than 45°. This design reduces the Gamma curve shift at side viewing angles, thus improving color shift. Therefore, the present invention can effectively improve UV protection. 2 Color shift difference in viewing angle of the A mode display panel.

[0071] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A display panel, characterized in that, The display panel is UV. 2 A-mode display panel, the display panel includes an array substrate and a counter substrate disposed opposite to each other and a liquid crystal layer disposed between the array substrate and the counter substrate, an alignment layer is disposed on the side of at least one of the array substrate and the counter substrate facing the liquid crystal layer, and the preset alignment angle of the liquid crystal layer includes an angle of 45° with the horizontal direction. The array substrate includes multiple sub-pixel units arranged in an array. Each sub-pixel unit includes a light-shielding structure. In a direction perpendicular to the array substrate, the light-shielding structure coincides with all areas of the liquid crystal with an azimuth angle greater than 45°. The sub-pixel unit includes a pixel electrode, and the pixel electrode includes multiple electrode blocks; the pixel electrode is divided into a first group of electrode blocks and a second group of electrode blocks arranged at intervals, and both the first group of electrode blocks and the second group of electrode blocks include four electrically connected electrode blocks; multiple slits are formed on each electrode block, the multiple slits on the same electrode block extend in the same direction, and the slits on two adjacent electrode blocks extend in different directions.

2. The display panel according to claim 1, characterized in that, The alignment layer includes a plurality of alignment regions corresponding one-to-one with the electrode blocks, and at least some of the alignment regions have a region with a liquid crystal azimuth angle greater than 45°.

3. The display panel according to claim 2, characterized in that, The preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group of electrode blocks and the second group of electrode blocks is 45°, and at least a portion of the edge regions of each alignment region corresponding to the first group of electrode blocks and the second group of electrode blocks have a region with a liquid crystal azimuth angle greater than 45°.

4. The display panel according to claim 3, characterized in that, The first group of electrode blocks has multiple first slits formed on each of the electrode blocks, and the second group of electrode blocks has multiple second slits formed on each of the electrode blocks. The first slits on each of the first group of electrode blocks form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively, and the first slits on two adjacent electrode blocks in the first group of electrode blocks are perpendicular to each other. The second slits on each of the second group of electrode blocks form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively, and the second slits on two adjacent electrode blocks in the second group of electrode blocks are perpendicular to each other. The light-shielding structure includes a first light-shielding structure corresponding to the first group of electrode blocks and a second light-shielding structure corresponding to the second group of electrode blocks. The shape of the first light-shielding structure is as follows: The shape of the second light-shielding structure is as follows: type.

5. The display panel according to claim 2, characterized in that, The preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group of electrode blocks is less than 45°, and the azimuth angle of the liquid crystal in each alignment region corresponding to the first group of electrode blocks is less than 45°. The preset alignment angle of the liquid crystal layer in each alignment region corresponding to the second group of electrode blocks is 45°, and at least a portion of the edge regions of each alignment region corresponding to the second group of electrode blocks have a region with a liquid crystal azimuth angle greater than 45°.

6. The display panel according to claim 5, characterized in that, The first group of electrode blocks has multiple first slits formed on each of the electrode blocks, and the second group of electrode blocks has multiple second slits formed on each of the electrode blocks. The first slits on each of the first group of electrode blocks form angles of 30°, -30°, 150° and -150° with the horizontal direction, respectively; the second slits on each of the second group of electrode blocks form angles of 45°, -45°, 135° and -135° with the horizontal direction, respectively; and the second slits on two adjacent electrode blocks in the second group of electrode blocks are perpendicular to each other. The orthographic projection of the light-shielding structure on the array substrate does not overlap with the orthographic projection of the first group of electrode blocks on the array substrate; The orthographic projection of the light-shielding structure on the array substrate overlaps with the orthographic projection of the second group of electrode blocks on the array substrate. The shape of the light-shielding structure is as follows: type.

7. The display panel according to any one of claims 1-6, characterized in that, The material of the light-shielding structure includes metal.

8. The display panel according to claim 7, characterized in that, It also includes multiple insulated, intersecting gate lines and multiple data lines, which define the plurality of sub-pixel units; wherein, The light-shielding structure is disposed on the same layer as the grid line.

9. The display panel according to claim 7, characterized in that, It also includes multiple insulated, intersecting gate lines and multiple data lines, which define the plurality of sub-pixel units; wherein, The light-shielding structure is arranged in the same layer as the data cable.

10. The display panel according to any one of claims 1-6, characterized in that, Also includes: A first polarizer located on the side of the array substrate facing away from the opposing substrate, and a second polarizer located on the side of the opposing substrate facing away from the array substrate; The absorption axes of the first polarizer and the second polarizer are perpendicular to each other.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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