CN116909065A - Display panel and display device - Google Patents
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- CN116909065A CN116909065A CN202310942785.3A CN202310942785A CN116909065A CN 116909065 A CN116909065 A CN 116909065A CN 202310942785 A CN202310942785 A CN 202310942785A CN 116909065 A CN116909065 A CN 116909065A
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- 239000000758 substrate Substances 0.000 claims description 69
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- 239000002184 metal Substances 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
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- 241001270131 Agaricus moelleri Species 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
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Abstract
The embodiment of the application discloses a display panel and a display device, wherein a shading structure is arranged in a sub-pixel unit, and the shading structure is overlapped with at least partial area with the liquid crystal azimuth angle larger than 45 degrees in a liquid crystal layer, namely the embodiment of the application utilizes the optimized design that the shading structure shields the area with the liquid crystal azimuth angle larger than 45 degrees, so that Gamma curve shift in a side view angle is reduced, the color cast problem is optimized and improved, and the application can effectively improve UV (ultraviolet) 2 The viewing angle color cast of the a-mode display panel is different.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of display technology, flat panel display devices such as liquid crystal displays (Liquid Crystal Display, LCDs) have been widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers due to their high image quality, power saving, thin body, and wide application range. Most of the liquid crystal display devices in the existing market are backlight type color film substrates, which comprise a liquid crystal display panel and a backlight module. Generally, a Liquid Crystal display panel includes a Color Filter (CF) substrate, a thin film transistor (Thin Film Transistor, TFT) substrate (also called an array substrate), and a Liquid Crystal (LC) sandwiched between the Color Filter substrate and the array substrate. The working principle of the liquid crystal display panel is that liquid crystal molecules are placed between a color film substrate and an array substrate which are parallel, a plurality of vertical and horizontal data lines and scanning lines are arranged in the middle, and the direction of the liquid crystal molecules is changed by controlling whether the data lines and the scanning lines are electrified or not, so that light rays of a backlight module are refracted out to generate pictures.
UV 2 A (Ultra Violet Vertical Alignment) is a vertical alignment (Vertical Alignment, VA) panel technology that adopts ultraviolet light to align liquid crystals. By using UV 2 The a technology can omit slits and protrusions for aligning liquid crystal molecules currently provided in VA mode liquid crystal display panels. Thus utilizing UV 2 The aperture ratio, contrast ratio and response speed of the liquid crystal display panel prepared by the technology A can be improved, and the production procedure can be greatly reduced.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which are used for solving the problem that a picture displayed by the display panel has color cast.
The display panel comprises an array substrate, an opposite substrate and a liquid crystal layer, wherein the array substrate and the opposite substrate are oppositely arranged, the liquid crystal layer is arranged between the array substrate and the opposite substrate, an alignment layer is arranged on one side, facing the liquid crystal layer, of at least one of the array substrate and the opposite substrate, and a preset alignment angle of the liquid crystal layer comprises an angle of 45 degrees with the horizontal direction;
the array substrate comprises a plurality of sub-pixel units which are arranged in an array manner, the sub-pixel units comprise a shading structure, and the shading structure is overlapped with at least part of areas with the liquid crystal azimuth angle larger than 45 degrees in the direction perpendicular to the array substrate.
Optionally, in the display panel provided by the embodiment of the present application, the light shielding structure coincides with all areas with an azimuth angle of greater than 45 ° of the liquid crystal.
Optionally, in the display panel provided by the embodiment of the application, 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 areas corresponding to the electrode blocks one by one, and at least part of the alignment areas have an area with a liquid crystal azimuth angle greater than 45 °.
Optionally, in the display panel provided by the embodiment of the present application, the pixel electrodes are divided into a first group and a second group disposed at intervals, and each of the first group and the second group includes four electrode blocks electrically connected; and a plurality of slits are formed on each electrode block, the extending directions of the slits on the same electrode block are the same, and the extending directions of the slits on two adjacent electrode blocks are different.
Optionally, in the display panel provided by the embodiment of the present application, a preset alignment angle of the liquid crystal layer in each alignment area corresponding to the first set of electrode blocks and the second set of electrode blocks is 45 °, and at least a part of edge areas of each alignment area corresponding to the first set of electrode blocks and the second set of electrode blocks has an area with a liquid crystal azimuth angle greater than 45 °.
Optionally, in the display panel provided by the embodiment of the present application, a plurality of first slits are formed on each electrode block of the first group, and a plurality of second slits are formed on each electrode block of the second group;
the included angles between the first slits on each electrode block of the first group and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, the first slits on two adjacent electrode blocks in the first group are mutually perpendicular, the included angles between the second slits on each electrode block of the second group and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, and the second slits on two adjacent electrode blocks in the second group are mutually perpendicular;
the light shielding structure comprises 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, wherein the shape of the first light shielding structure is thatThe shape of the second shading structure is +.>Type (2).
Optionally, in the display panel provided by the embodiment of the present application, a preset alignment angle of the liquid crystal layer in each alignment area corresponding to the first group of electrode blocks is smaller than 45 °, and a liquid crystal azimuth angle in each alignment area corresponding to the first group of electrode blocks is smaller than 45 °;
the preset alignment angle of the liquid crystal layer in each alignment area corresponding to the second group of electrode blocks is 45 degrees, and at least part of edge areas of each alignment area corresponding to the second group of electrode blocks are provided with areas with liquid crystal azimuth angles larger than 45 degrees.
Optionally, in the display panel provided by the embodiment of the present application, a plurality of first slits are formed on each electrode block of the first group, and a plurality of second slits are formed on each electrode block of the second group;
the included angles between the first slits on the electrode blocks of the first group and the horizontal direction are respectively 30 degrees, -150 degrees and-150 degrees, the included angles between the second slits on the electrode blocks of the second group and the horizontal direction are respectively 45 degrees, -135 degrees and-135 degrees, and the second slits on two adjacent electrode blocks in the second group are mutually perpendicular;
orthographic projection of the shading structure on the array substrate is not overlapped with orthographic projection of the first group of electrode blocks on the array substrate;
the orthographic projection of the shading structure on the array substrate overlaps with the orthographic projection of the second group of electrode blocks on the array substrate, and the shading structure is in the shape ofType (2).
Optionally, in the display panel provided by the embodiment of the application, a material of the light shielding structure includes metal.
Optionally, in the display panel provided by the embodiment of the present application, the display panel further includes a plurality of gate lines and a plurality of data lines disposed in an insulating and crossing manner, where the plurality of gate lines and the plurality of data lines define the plurality of sub-pixel units; wherein,,
the shading structure and the grid line are arranged on the same layer.
Optionally, in the display panel provided by the embodiment of the present application, the display panel further includes a plurality of gate lines and a plurality of data lines disposed in an insulating and crossing manner, where the plurality of gate lines and the plurality of data lines define the plurality of sub-pixel units; wherein,,
the shading structure and the data line are arranged on the same layer.
Optionally, in the display panel provided by the embodiment of the present application, the display panel further includes: the first polaroid is positioned at one side of the array substrate, which is away from the opposite substrate, and the second polaroid is positioned at one side of the opposite substrate, which is away from the array substrate; the absorption axis of the first polaroid and the absorption axis of the second polaroid are mutually perpendicular.
Correspondingly, the embodiment of the application also provides a display device which comprises the display panel provided by the embodiment of the application.
The embodiment of the application has the following beneficial effects:
according to the display panel and the display device provided by the embodiment of the application, the shading structure is arranged in the sub-pixel unit, and the shading structure is overlapped with at least part of the area with the liquid crystal azimuth angle larger than 45 degrees in the liquid crystal layer, namely the embodiment of the application utilizes the optimized design that the shading structure shields the area with the liquid crystal azimuth angle larger than 45 degrees, so that Gamma curve shift is reduced, the color cast problem is optimized and improved, and therefore, the application can effectively improve UV (ultraviolet) 2 Color shift difference of viewing angle of the A-mode display panel.
Drawings
FIG. 1 is a schematic view of an alignment angle of a pixel electrode in the prior art;
FIG. 2 is a graph showing contrast of brightness differences between alignment areas when the azimuth angles are respectively 30 DEG, 45 DEG, 60 DEG, respectively corresponding to the polarization of the 0 DEG/90 DEG polarizer and the 30 DEG/120 DEG polarizer;
FIG. 3 is a shift diagram of a Gamma curve of a liquid crystal display panel with different gray scales;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a sub-pixel unit in a display panel according to an embodiment of the present application;
FIG. 6 is a schematic diagram of another structure of a sub-pixel unit in a display panel according to an embodiment of the application;
FIG. 7 is a shift diagram of another Gamma curve of the LCD panel with different gray levels.
Detailed Description
In order to make the technical solution and advantages of the present application more clear, a specific implementation of a display panel and a display device provided by embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the following description of the preferred embodiments is provided for the purpose of illustrating and explaining the application, and is not intended to limit the application. And embodiments of the application and features of the embodiments may be combined with each other without conflict.
The thickness, size and shape of the films in the drawings do not reflect the actual scale of the display panel, and are intended to illustrate the present application.
For using UV 2 For the liquid crystal display panel prepared by the technology a, at least four alignment areas (for example, four alignment areas) are formed in the pixel electrode area of each sub-pixel unit correspondingly. As shown in fig. 1, if the pixel electrode is divided into four regions, the alignment angle of the first region A1 located at the upper right corner forms an angle of 135 ° with the horizontal direction, the alignment angle of the second region A2 located at the upper left corner forms an angle of 45 ° with the horizontal direction, the alignment angle of the third region A3 located at the lower left corner forms an angle of-45 ° with the horizontal direction, and the alignment angle of the fourth region A4 located at the lower right corner forms an angle of-135 ° with the horizontal direction.
When the display panel displays a picture, the pixel electrode and the common electrode of each sub-pixel unit form an electric field, and an electric field force is applied to the liquid crystal molecules positioned above the pixel electrode. The initial alignment angle of the liquid crystal molecules in the same alignment region is the same before the electric field force is applied. After the electric field force is applied, the liquid crystal molecules can tilt along the alignment angle of the corresponding area, so that the display panel can display the corresponding image.
In an ideal case, the azimuth angle of the liquid crystal is 45 degrees, but is limited by factors such as materials, manufacturing process, and influence of alignment angles in different directions at the junction of the alignment areas, and the same alignment area may have liquid crystal molecules with the azimuth angles smaller than 45 degrees and larger than 45 degrees at the same time, so that the inventor finds that the brightness and darkness of display pictures corresponding to different azimuth angles are different. For example, the transmittance of the liquid crystal display panel conforms to the formula Assuming that the phase difference delta is equal to pi, the liquid crystal azimuth angle +.>When the polarization is 30 degrees, 45 degrees and 60 degrees, when the traditional 0 degree/90 degree polaroid (an included angle between the absorption axes of the upper polaroid and the lower polaroid and the horizontal direction) is polarized, the brightness of adjacent domains (alignment areas) is not obviously different; when using 30 °/120 ° polarizer polarization, adjacent domains at 30 ° and 60 ° azimuth angle differ significantly in brightness; as shown in fig. 2, the first azimuth angle of action in fig. 2 is a schematic view of brightness difference of each alignment region when the first azimuth angle of action is 30 ° corresponding to the 0 °/90 ° polarizer and the 30 °/120 ° polarizer respectively, the second azimuth angle of action in fig. 2 is a schematic view of brightness difference of each alignment region when the second azimuth angle of action is 45 ° corresponding to the 0 °/90 ° polarizer and the 30 °/120 ° polarizer respectively, and the third azimuth angle of action in fig. 2 is a schematic view of brightness difference of each alignment region when the third azimuth angle of action is 60 ° corresponding to the 0 °/90 ° polarizer and the 30 °/120 ° polarizer respectively, it can be seen that quadrant (1) (3) is brighter than quadrant (2) (4) when the azimuth angle is 30 °; when the azimuth angle is 60 DEG, the (1) (3) quadrant is darker than the (2) (4) quadrant, so that in four alignment areas above and below the last column in FIG. 2, the (1) (3) quadrant is relatively darkIs a region with an azimuth angle greater than 45 degrees, and the relatively bright region in the (2) (4) quadrant is a region with an azimuth angle greater than 45 degrees. Through the above experimental verification, the positions where the azimuth angle of each alignment region is greater than or less than 45 ° in the liquid crystal display panel having the ideal azimuth angle of 45 ° (the last column illustrates the positions where the azimuth angle is greater than 45 ° and less than 45 ° in each alignment region) are determined.
According to the research, when the azimuth angle is 60 °, obvious shift occurs in the Gamma curve of the liquid crystal display panel, as shown in fig. 3, fig. 3 is a shift schematic diagram of the Gamma curve of the liquid crystal display panel under different gray scales, wherein the curve E is a standard Gamma curve of the positive viewing angle, and the curve F is a Gamma curve of the side view angle of 60 ° in the prior art, and it can be seen that the Gamma curve of the side view angle of 60 ° is obvious compared with the standard Gamma curve shift, so that the color cast phenomenon of the picture displayed by the liquid crystal display panel occurs.
In order to solve the problem that when the azimuth angle is 60 ° (greater than 45 °), shift occurs in Gamma voltage of the liquid crystal display panel, so that color cast phenomenon occurs in a picture displayed by the liquid crystal display panel, as shown in fig. 4, the embodiment of the application provides a display panel, which comprises an array substrate 1 and a counter substrate 2 which are oppositely arranged, and a liquid crystal layer 3 arranged between the array substrate 1 and the counter substrate 2, wherein an alignment layer is arranged on one side of at least one of the array substrate 1 and the counter substrate 2 facing the liquid crystal layer 3 (in the embodiment of the application, a first alignment layer 4 is arranged on one side of the array substrate 1 facing the liquid crystal layer 3, and a second alignment layer 5 is arranged on one side of the counter substrate 2 facing the liquid crystal layer 3), and the preset alignment angle of the liquid crystal layer 3 comprises an angle of 45 ° with the horizontal direction;
the array substrate 1 includes a plurality of sub-pixel units arranged in an array, as shown in fig. 5 and 6, fig. 5 and 6 illustrate a schematic structural diagram of only one sub-pixel unit, and the sub-pixel unit includes a light shielding structure 6, where the light shielding structure 6 coincides with at least a partial area having an azimuth angle of greater than 45 ° of the liquid crystal in a direction perpendicular to the array substrate 1.
According to the display panel provided by the embodiment of the application, the shading structure is arranged in the sub-pixel unit, and the shading structure is heavy to at least part of the area with the liquid crystal azimuth angle larger than 45 degrees in the liquid crystal layerIn addition, the embodiment of the application utilizes the optimal design that the shading structure shields the area with the azimuth angle of liquid crystal larger than 45 degrees, so that Gamma curve shift is reduced, the color cast problem is optimally improved, and the UV (ultraviolet) light-shielding device can be effectively improved 2 Color shift difference of viewing angle of the A-mode display panel.
Specifically, the liquid crystal azimuth refers to the direction angle of the projection of the liquid crystal molecular directors on the (X, Y) plane and the X axis.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 5 and fig. 6, the light shielding structure 6 coincides with all areas where the azimuth angle of the liquid crystal is greater than 45 °. Therefore, the Gamma curve shift can be reduced to the minimum, and the color cast problem can be further optimized and improved.
In particular, in the display panel provided by the embodiment of the present application, as shown in fig. 4 to 6, the sub-pixel unit includes a pixel electrode, in the vertical alignment mode liquid crystal display panel, a multi-domain pixel structure is often adopted to improve the color cast problem, in this case, referring to fig. 5, i.e., the pixel electrode includes a plurality of electrode blocks, for example, the pixel electrode includes two groups (a first group B1 and a second group B2), each group includes 4 electrode blocks, where 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, 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, and the alignment layers (4 and 5) include a plurality of alignment areas (i.e., 8 alignment areas) corresponding to the electrode blocks one by one, and at least a portion of the alignment areas has an area with a liquid crystal azimuth angle greater than 45 °. According to the embodiment of the application, the area with the liquid crystal azimuth angle larger than 45 degrees is shielded by adopting the shading structure 6, so that Gamma curve shift in the side view angle can be reduced, and the color cast problem of the display picture of the liquid crystal display panel is improved.
It should be noted that, in the embodiment of the present application, the first alignment layer 4 is disposed on the side of the array substrate 1 facing the liquid crystal layer 3, and the second alignment layer 5 is disposed on the side of the opposite substrate 2 facing the liquid crystal layer 3, and of course, the first alignment layer 4 may be disposed only on the side of the array substrate 1 facing the liquid crystal layer 3, or the second alignment layer 5 may be disposed only on the side of the opposite substrate 2 facing the liquid crystal layer 3The alignment of the liquid crystal molecules of the liquid crystal layer 3 can be achieved. In particular, the alignment layer may achieve vertical alignment of the liquid crystal molecules by ultraviolet irradiation, i.e., by UV 2 The technology A is used for aligning liquid crystal molecules in the area where the pixel electrode is located, so that the liquid crystal molecules incline according to a preset direction, and under the action of a driving electric field of the pixel electrode, the liquid crystal molecules incline and deflect according to the preset direction.
In particular implementation, in the display panel provided in the embodiment of the present application, as shown in fig. 5 and 6, the pixel electrodes are divided into a first group B1 and a second group B2 that are disposed at intervals, where the first group B1 and the second group B2 each include four electrode blocks that are electrically connected, 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 that are electrically connected, and 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 that are electrically connected; each electrode block is formed with a plurality of slits (L1 and L2), and the extending directions of the slits on the same electrode block are the same, for example, the extending directions of the slits (L1) on the first electrode block 71 are the same, the extending directions of the slits (L1) on the second electrode block 72 are the same, and so on; the extending directions of the slits on the adjacent two electrode blocks are different, for example, in the first group B1, the extending directions of the slits (L1) on the first electrode block 71 and the slits (L1) on the second electrode block 72 are different, the extending directions of the slits (L1) on the first electrode block 71 and the slits (L1) on the third electrode block 73 are different, the extending directions of the slits (L1) on the third electrode block 73 and the slits (L1) on the fourth electrode block 74 are different, the extending directions of the slits (L1) on the second electrode block 72 and the slits (L1) on the fourth electrode block 74 are different, and the adjacent electrode blocks are electrically connected by branch electrodes along the row direction or the column direction, for example, the first electrode block and the second electrode block are electrically connected by branch electrodes extending along the column direction, that is, the branch electrodes are disposed 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 by a branch electrode extending in the row direction, i.e. the branch electrode is arranged in a region intermediate the first electrode block and the third electrode block. Since the slit extending directions of different electrode blocks in the same sub-pixel unit are different, the directions of the generated driving electric fields to the liquid crystal molecules are also different. In the working state, each electrode block and the common electrode form a driving electric field respectively, and the driving electric fields generated by the electrode blocks under the same potential are different due to the fact that the extending directions of the slits in each electrode block are different, and the deflection directions of liquid crystals under the action of different driving electric fields are different, so that the display color cast phenomenon of the sub-pixel units can be effectively improved.
As shown in fig. 5 and fig. 6, the plurality of electrode blocks in each sub-pixel unit are arranged in four rows and two columns, the area where each electrode block is located is taken as a domain, the pixel electrodes in each sub-pixel unit are divided into a first group B1 and a second group B2 which are arranged at intervals, each group can be driven by a thin film transistor respectively, each group comprises four electrode blocks, namely four alignment areas, the alignment directions of the four alignment areas are different, and a display mode of 8-domain display is realized.
Specifically, 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 caused to present a brightness difference through charge sharing or capacitance discharging and other modes, so that the 8-domain effect of the 4-domain pixel can be realized, and the display color cast is improved.
In particular, in the display panel provided by the embodiment of the application, as shown in fig. 5, the preset alignment angles of the liquid crystal layers in the alignment areas corresponding to the first group B1 of electrode blocks and the second group B2 of electrode blocks are 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 °, the angle between the slit (L2) on the fifth electrode block 75 and the horizontal direction is 45 °, the angle between the slit (L2) on the sixth electrode block 76 and the horizontal direction is-45 °, the angle between the slit (L2) on the eighth electrode block 78 and the horizontal direction is-135 °, and the angle between the slit (L2) on the first group B1 of electrode block and the second electrode block of the second electrode block of the liquid crystal layer is at least a partial area corresponding to the liquid crystal layer of the edge area. In this way, the light shielding structure 6 is used to shield the area with the liquid crystal azimuth angle larger than 45 degrees in each alignment area, so that the Gamma curve shift in the side view angle can be reduced, and the color shift of the display surface can be improved.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 5, a plurality of first slits L1 are formed on each electrode block of the first group B1, and a plurality of second slits L2 are formed on each electrode block of the second group B2;
the included angles between the first slits L1 on each electrode block of the first group B1 and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, the first slits L1 on two adjacent electrode blocks in the first group B1 are mutually perpendicular, the included angles between the second slits L2 on each electrode block of the second group B2 and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, and the second slits L2 on two adjacent electrode blocks in the second group B2 are mutually perpendicular;
according to the positions of the orientation angles greater than 45 ° and less than 45 ° in each alignment region illustrated in the last column of fig. 2, the light shielding structure 6 may be arranged to include a first light shielding structure 61 corresponding to the first group B1 of electrode blocks and a second light shielding structure 62 corresponding to the second group B2 of electrode blocks, and the shape of the first light shielding structure 61 may beIs (1)>Referring to fig. 5, the first light shielding structure 61 of the first group B1 includes a structure disposed on a 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, a structure disposed on an intermediate region of 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, a structure disposed on a 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 a side of the fourth electrode block 74 away from the third electrode block 73 and extending along the column direction, and the first light shielding structure 61 may be an integral moldingThe method comprises the steps of carrying out a first treatment on the surface of the The shape of the second light shielding structure 62 may be +.>Is (1)>Referring to fig. 5, the second light shielding structure 62 of the second group B2 includes a structure disposed on a side of the seventh electrode block 77 and the eighth electrode block 78 away from the sixth electrode block 76 and extending in the row direction, a structure disposed on an intermediate region of the fifth electrode block 75 and the sixth electrode block 76 with the seventh electrode block 77 and the eighth electrode block 78 and extending in the row direction, a structure disposed on a side of the fifth electrode block 75 away from the sixth electrode block 76 and extending in the column direction, and a structure disposed on a side of the eighth electrode block 78 away from the seventh electrode block 77 and extending in the column direction, and the second light shielding structure 62 may be integrally formed. Thus, the first light shielding structure 61 and the second light shielding structure 62 are utilized to shield the area with the liquid crystal azimuth angle larger than 45 degrees in each alignment area, so that Gamma curve shift in the side view angle can be reduced, and the color cast of the display image surface can be improved.
In particular, 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 group and the second group of electrode blocks in the same sub-pixel unit may be different, for example, in the display panel provided by the embodiment of the present application, as shown in fig. 6, the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first group B1 of electrode blocks is smaller than 45 °, for example, the included angle between the slit (L1) on the first electrode block 71 and the horizontal direction is 30 °, the included angle between the slit (L1) on the second electrode block 72 and the horizontal direction is 150 °, the included angle between the slit (L1) on the third electrode block 73 and the horizontal direction is-30 °, and the included angle between the slit (L1) on the fourth electrode block 74 and the horizontal direction is-150 °, and the liquid crystal azimuth angle in each alignment region corresponding to the first group B1 of electrode blocks is smaller than 45 °; thus, according to the analysis in FIG. 2, the liquid crystal azimuth angle is less than 45℃without shielding;
the preset alignment angle of the liquid crystal layer in each alignment region corresponding to the second group B2 of electrode blocks is 45 °, for example, the angle between the slit (L2) on the fifth electrode block 75 and the horizontal direction is 45 °, the angle between the slit (L2) on the sixth electrode block 76 and the horizontal direction is 135 °, the angle between the slit (L2) on the seventh electrode block 77 and the horizontal direction is-45 °, the angle between the slit (L2) on the eighth electrode block 78 and the horizontal direction is-135 °, and at least part of the edge regions of each alignment region corresponding to the second group B2 of electrode blocks have regions with liquid crystal azimuth angles greater than 45 °. Therefore, the Gamma curve shift can be reduced by shielding the region with the liquid crystal azimuth angle larger than 45 degrees of each alignment region corresponding to the second group B2 electrode block by using the shielding structure 6, so that the color cast of the display image is improved.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 5, a plurality of first slits L1 are formed on each electrode block of the first group B1, and a plurality of second slits L2 are formed on each electrode block of the second group B2;
the included angle between the first slit L1 on each electrode block of the first group B1 and the horizontal direction is 30 degrees, the included angle between the second slit L2 on each electrode block of the second group B2 and the horizontal direction is 45 degrees, and the second slits L2 on two adjacent electrode blocks in the second group B2 are mutually perpendicular;
according to the analysis in fig. 2, the liquid crystal azimuth angles of the alignment areas corresponding to the first group of B1 electrode blocks are all smaller than 45 °, so that the alignment areas corresponding to the first group of B1 electrode blocks do not need to be shielded, and therefore the front projection of the light shielding structure 6 on the array substrate does not overlap with the front projection of the first group of B1 electrode blocks on the array substrate;
according to the positions of the orientation angles greater than 45 ° and less than 45 ° in each alignment region illustrated in the last column of fig. 2, the front projection of the light shielding structure 6 on the array substrate 1 may be arranged to overlap with the front projection of the second group B2 of electrode blocks on the array substrate 1, the shape of the light shielding structure 6 beingIs (1)>Covering ofReferring to fig. 6, the light shielding structure 6 includes structures disposed on a 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, structures disposed in intermediate regions of 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, structures disposed on a side of the fifth electrode block 75 away from the sixth electrode block 76 and extending along the column direction, and structures disposed on a side of the eighth electrode block 78 away from the seventh electrode block 77 and extending along the column direction, and the light shielding structure 6 may be integrally formed. In this way, the light shielding structure 6 is used to shield the region with the liquid crystal azimuth angle larger than 45 ° in each alignment region of the second group B2, so that the Gamma curve shift in the side view angle can be reduced, and the color shift of the display surface can be improved.
As shown in fig. 7, fig. 7 is a shift schematic diagram of Gamma curves of a liquid crystal display panel under different gray scales, wherein a curve E is a standard Gamma curve of a positive viewing angle, a curve F is a Gamma curve corresponding to a side view angle of 60 ° in the prior art, a curve G is a Gamma curve corresponding to a pixel electrode only being set as a slit electrode in the embodiment of the present application, and a curve H is a Gamma curve corresponding to a pixel electrode being set as a slit electrode and an area with an azimuth angle larger than 45 ° being shielded by a light shielding structure 6 in the embodiment of the present application, so that it can be seen that the curves G and F are smaller relative to the standard Gamma curve shift.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 5 and 6, the material of the light shielding structure 6 includes metal. Alternatively, the light shielding structure 6 may be provided on the array substrate 1, or may be provided on the opposite substrate 2.
In a specific implementation, the display panel provided by the embodiment of the application further includes a plurality of gate lines and a plurality of data lines, which are arranged in an insulating and crossing manner, and the plurality of gate lines and the plurality of data lines define a plurality of sub-pixel units; wherein,,
the shading structure 6 can be arranged on the same layer as the grid line, so that the original composition graph is changed when the grid line is formed, the graph of the shading structure 6 and the grid line can be formed through one-time composition process, the process of independently preparing the shading structure 6 is not needed to be added, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Of course, the shading structure 6 can be arranged on the same layer as the data line, so that the original composition graph is changed when the data line is formed, the graph of the shading structure 6 and the data line can be formed through one-time composition process, the process of independently preparing the shading structure 6 is not needed to be added, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 4, the display panel further includes: a first polaroid 8 positioned on one side of the array substrate 1 away from the opposite substrate 2, and a second polaroid 9 positioned on one side of the opposite substrate 2 away from the array substrate 1; the absorption axis of the first polarizer 8 and the absorption axis of the second polarizer 9 are perpendicular to each other. The working principle of the first polarizer 8 and the second polarizer 9 is the same as that of the prior art, and is not described in detail herein.
In a specific implementation, in the display panel provided by the embodiment of the present application, as shown in fig. 4, the display panel further includes a backlight module 10 located on a side of the first polarizer 8 facing away from the opposite substrate 2, where the backlight module 10 is used for providing backlight. The specific structure of the backlight module 10 is the same as that of the prior art, and will not be described in detail herein.
Based on the same inventive concept, the embodiment of the application also provides a display device, which comprises the display panel provided by the embodiment of the application. The display device may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be referred to the embodiment of the display panel, and the repetition is not repeated.
The embodiment of the application provides a display panel and a display device, wherein a shading structure is arranged in a sub-pixel unit, and the azimuth angle of liquid crystal in the shading structure and a liquid crystal layer is larger than 45 DEGAt least partial areas of the liquid crystal display are overlapped, namely the embodiment of the application utilizes the optimal design that the shading structure shields the area with the liquid crystal azimuth angle larger than 45 DEG, so that Gamma curve shift in a side view angle can be reduced, and the color cast problem is optimally improved, therefore, the application can effectively improve UV 2 Color shift difference of viewing angle of the A-mode display panel.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (13)
1. The display panel is characterized by comprising an array substrate, a counter substrate and a liquid crystal layer, wherein the array substrate and the counter substrate are oppositely arranged, the liquid crystal layer is arranged between the array substrate and the counter substrate, an alignment layer is arranged on one side of at least one of the array substrate and the counter substrate, which faces the liquid crystal layer, and a preset alignment angle of the liquid crystal layer comprises an angle of 45 degrees with the horizontal direction;
the array substrate comprises a plurality of sub-pixel units which are arranged in an array manner, the sub-pixel units comprise a shading structure, and the shading structure is overlapped with at least part of areas with the liquid crystal azimuth angle larger than 45 degrees in the direction perpendicular to the array substrate.
2. The display panel of claim 1, wherein the light shielding structure coincides with an entire area having an azimuthal angle of liquid crystal greater than 45 °.
3. The display panel according to claim 2, wherein the sub-pixel unit includes a pixel electrode including a plurality of electrode blocks, the alignment layer includes a plurality of alignment regions corresponding to the electrode blocks one by one, and at least a part of the alignment regions have a region having a liquid crystal azimuth angle greater than 45 °.
4. A display panel according to claim 3, wherein the pixel electrodes are divided into a first group and a second group arranged at intervals, each of the first group and the second group comprising four electrode blocks electrically connected; and a plurality of slits are formed on each electrode block, the extending directions of the slits on the same electrode block are the same, and the extending directions of the slits on two adjacent electrode blocks are different.
5. The display panel according to claim 4, wherein a preset alignment angle of the liquid crystal layer in each of the alignment regions corresponding to the first and second sets of electrode blocks is 45 °, and at least a part of edge regions of each of the alignment regions corresponding to the first and second sets of electrode blocks has a region having a liquid crystal azimuth angle greater than 45 °.
6. The display panel of claim 5, wherein each of the electrode blocks of the first set has a plurality of first slits formed thereon, and each of the electrode blocks of the second set has a plurality of second slits formed thereon;
the included angles between the first slits on each electrode block of the first group and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, the first slits on two adjacent electrode blocks in the first group are mutually perpendicular, the included angles between the second slits on each electrode block of the second group and the horizontal direction are respectively 45 degrees, -45 degrees, 135 degrees and-135 degrees, and the second slits on two adjacent electrode blocks in the second group are mutually perpendicular;
the light shielding structure comprises 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, wherein the shape of the first light shielding structure is thatThe second shading structure has the shape ofType (2).
7. The display panel of claim 4, wherein a preset alignment angle of the liquid crystal layer in each alignment region corresponding to the first set of electrode blocks is less than 45 °, and a liquid crystal azimuth angle in each alignment region corresponding to the first set of electrode blocks is less than 45 °;
the preset alignment angle of the liquid crystal layer in each alignment area corresponding to the second group of electrode blocks is 45 degrees, and at least part of edge areas of each alignment area corresponding to the second group of electrode blocks are provided with areas with liquid crystal azimuth angles larger than 45 degrees.
8. The display panel of claim 7, wherein each of the electrode blocks of the first set has a plurality of first slits formed thereon, and each of the electrode blocks of the second set has a plurality of second slits formed thereon;
the included angles between the first slits on the electrode blocks of the first group and the horizontal direction are respectively 30 degrees, -150 degrees and-150 degrees, the included angles between the second slits on the electrode blocks of the second group and the horizontal direction are respectively 45 degrees, -135 degrees and-135 degrees, and the second slits on two adjacent electrode blocks in the second group are mutually perpendicular;
orthographic projection of the shading structure on the array substrate is not overlapped with orthographic projection of the first group of electrode blocks on the array substrate;
the orthographic projection of the shading structure on the array substrate overlaps with the orthographic projection of the second group of electrode blocks on the array substrate, and the shading structure is in the shape ofType (2).
9. The display panel according to any one of claims 1 to 8, wherein the material of the light shielding structure comprises a metal.
10. The display panel of claim 9, further comprising a plurality of gate lines and a plurality of data lines disposed in insulated intersections, the plurality of gate lines and the plurality of data lines defining the plurality of sub-pixel cells; wherein,,
the shading structure and the grid line are arranged on the same layer.
11. The display panel of claim 9, further comprising a plurality of gate lines and a plurality of data lines disposed in insulated intersections, the plurality of gate lines and the plurality of data lines defining the plurality of sub-pixel cells; wherein,,
the shading structure and the data line are arranged on the same layer.
12. The display panel according to any one of claims 1 to 8, further comprising: the first polaroid is positioned at one side of the array substrate, which is away from the opposite substrate, and the second polaroid is positioned at one side of the opposite substrate, which is away from the array substrate; the absorption axis of the first polaroid and the absorption axis of the second polaroid are mutually perpendicular.
13. A display device comprising the display panel of any one of claims 1-12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310942785.3A CN116909065A (en) | 2023-07-28 | 2023-07-28 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310942785.3A CN116909065A (en) | 2023-07-28 | 2023-07-28 | Display panel and display device |
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| CN116909065A true CN116909065A (en) | 2023-10-20 |
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| CN202310942785.3A Pending CN116909065A (en) | 2023-07-28 | 2023-07-28 | Display panel and display device |
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