CN115561937A

CN115561937A - Array substrate, display panel and display device

Info

Publication number: CN115561937A
Application number: CN202211199494.1A
Authority: CN
Inventors: 郭远辉; 张维; 陈创
Original assignee: BOE Technology Group Co Ltd; Wuhan BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Wuhan BOE Optoelectronics Technology Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-03

Abstract

The embodiment of the invention discloses an array substrate, a display panel and a display device. In a specific embodiment, the array substrate includes a first substrate and a pixel electrode layer disposed on the first substrate, the pixel electrode layer includes a plurality of pixel electrodes arranged in an array, each pixel electrode includes a plurality of domains arranged along a direction, and the plurality of domains includes at least one pair of adjacent domains disposed in the following manner: the adjacent domains comprise a first domain and a second domain, a first intra-domain slit extending along the same direction is arranged in the first domain, a part of the second domain, which is close to the first domain, is provided with a second intra-domain slit extending along the same direction, and the other parts are provided with a third intra-domain slit extending along the same direction, and the part of the second domain can be called a transition region, wherein the included angle between the second intra-domain slit and the first intra-domain slit is larger than that between the third intra-domain slit and the first intra-domain slit. In addition, the array substrate may also include at least one pair of adjacent domains each provided with the transition region.

Description

Array substrate, display panel and display device

Technical Field

The invention relates to the technical field of display. And more particularly, to an array substrate, a display panel and a display device.

Background

In a currently commonly used domain distribution manner such as a "grid" shape, an exposure manner of an upgraded SUVA (ultra fine light Alignment) process of an UV2A (ultra violet-induced multi-domain Vertical Alignment, abbreviated as UltraViolet light Alignment) is adopted, so that although a display dark fringe can be reduced to improve light transmittance of the liquid crystal display panel and the liquid crystal display panel has better response time performance and color shift characteristics, for adjacent domains with different directions of extension of slits in the domains (for example, in the adjacent domains, a slit in a domain extending along an X direction is provided in one domain, a slit in a domain extending along a Y direction is provided in the other domain), a display dark fringe is formed at a boundary of the adjacent domains, thereby affecting the light transmittance of the liquid crystal display panel.

Disclosure of Invention

The present invention is directed to an array substrate, a display panel and a display device, which solve at least one of the problems of the related art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the first aspect of the present invention provides an array substrate, which includes a first substrate and a pixel electrode layer disposed on the first substrate, where the pixel electrode layer includes a plurality of pixel electrodes arranged in an array, each pixel electrode includes a plurality of domains arranged along a first direction, and the plurality of domains includes at least one pair of adjacent domains disposed in at least one of the following two ways:

the adjacent domains comprise a first domain and a second domain, wherein first intra-domain slits extending along the same direction are arranged in the first domain, second intra-domain slits extending along the same direction are arranged in a part of the second domain close to the first domain, and third intra-domain slits extending along the same direction are arranged in the other regions, wherein the included angle between the second intra-domain slits and the first intra-domain slits is larger than that between the third intra-domain slits and the first intra-domain slits;

and in the second mode, the adjacent domains comprise a third domain and a fourth domain, a part of the third domain, which is close to the fourth domain, is provided with a fourth intra-domain slit extending along the same direction, and the rest of the third domain is provided with a fifth intra-domain slit extending along the same direction, a part of the fourth domain, which is close to the third domain, is provided with a sixth intra-domain slit extending along the same direction, and the rest of the fourth domain is provided with a seventh intra-domain slit extending along the same direction, wherein an included angle between the fourth intra-domain slit and the seventh intra-domain slit is larger than an included angle between the fifth intra-domain slit and the seventh intra-domain slit, and an included angle between the sixth intra-domain slit and the fifth intra-domain slit is larger than an included angle between the seventh intra-domain slit and the fifth intra-domain slit.

Optionally, an area of a partial region of the second domain region close to the first domain region accounts for 5% to 50% of an area of the second domain region, a partial region of the third domain region close to the fourth domain region accounts for 5% to 50% of an area of the third domain region, and a partial region of the fourth domain region close to the third domain region accounts for 5% to 50% of an area of the fourth domain region.

Optionally, a difference between an included angle between the slit in the second domain and the slit in the first domain and an included angle between the slit in the second domain and the slit in the third domain is smaller than a preset threshold, and a difference between an included angle between the slit in the fourth domain and the slit in the fifth domain, an included angle between the slit in the fourth domain and the slit in the sixth domain, and an included angle between the slit in the sixth domain and the slit in the seventh domain is smaller than a preset threshold.

Optionally, the width of the intra-domain slits provided in each of the plurality of domains is the same.

Optionally, the pitch of the slits in adjacent domains is the same in each of the plurality of domains.

Optionally, the third intra-domain slit and an extension line thereof extending to a boundary between the first domain and the second domain are mirror-symmetric to the first intra-domain slit along the boundary between the first domain and the second domain, the fourth intra-domain slit and the sixth intra-domain slit are mirror-symmetric to each other along the boundary between the third domain and the fourth domain, and the fifth intra-domain slit and the seventh intra-domain slit are mirror-symmetric to each other along the boundary between the third domain and the fourth domain.

Optionally, an angle between an extension line of the slit in the first domain extending to a boundary line between the first domain and the second domain and a boundary line between the first domain and the second domain is 30 ° to 60 °, and an angle between an extension line of the slit in the fifth domain extending to a boundary line between the third domain and the fourth domain and a boundary line between the third domain and the fourth domain is 30 ° to 60 °.

A second aspect of the present invention provides a display panel comprising:

the array substrate provided by the first aspect of the invention further comprises a first alignment layer arranged on one side of the pixel electrode layer far away from the first substrate;

the color film substrate is arranged opposite to the array substrate and comprises a second substrate, a common electrode arranged on the second substrate and a second alignment layer arranged on one side, far away from the second substrate, of the common electrode;

the liquid crystal layer is positioned between the array substrate and the color film substrate;

the first alignment layer and/or the second alignment layer enable liquid crystal molecules in the liquid crystal layer to have a set pretilt angle due to light irradiation treatment.

Optionally, the first alignment layer and/or the second alignment layer may provide a pre-tilt angle for liquid crystal molecules in the liquid crystal layer due to SUVA process illumination.

A third aspect of the invention provides a display device comprising the display panel of the second aspect of the invention.

The invention has the following beneficial effects:

according to the technical scheme, through the optimization design of the inclination angle of the slit in the domain, the partial area of at least one domain area in the adjacent domain areas, which is close to the other domain area, is set as the transition area in which the inclination angle of the slit is transited between the adjacent domain areas, so that dark stripes at the boundary of the adjacent domain areas can be improved, the width of the dark stripes is reduced, and the light transmittance of the display panel is improved.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 shows a schematic diagram of a pixel electrode in the prior art.

Fig. 2 shows a schematic diagram of a pixel electrode in the prior art.

Fig. 3 is a schematic diagram of a liquid crystal display panel in the liquid crystal display device according to the embodiment of the present invention.

Fig. 4 shows a schematic diagram of a pixel electrode in an embodiment of the invention.

Fig. 5 shows another schematic diagram of a pixel electrode in an embodiment of the invention.

Fig. 6 is a schematic diagram showing comparison between the pixel light effect simulation results of the pixel electrode shown in fig. 2 and the pixel electrode shown in fig. 5.

Fig. 7 shows another schematic diagram of a pixel electrode in an embodiment of the invention.

Fig. 8 shows another schematic diagram of a pixel electrode in an embodiment of the invention.

Detailed Description

In order to more clearly illustrate the present invention, the present invention will be further described with reference to the following examples and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

Currently, liquid crystal display panels can be classified into a Vertical Alignment (VA) type, a Twisted Nematic (TN) or Super Twisted Nematic (STN) type, an In-Plane Switching (IPS) type, and a Fringe Field Switching (FFS) type. In the manufacturing process of the liquid crystal display panel, alignment of the alignment layer is an important process, and the alignment process is used for realizing the arrangement of liquid crystal molecules according to a specific direction and an angle. The conventional alignment process adopts a Rubbing (Rubbing) method, can align in only one horizontal direction, and is widely adopted by TN-type and IPS-type liquid crystal display panels. The mainstream of the optical alignment of the VA-type liquid crystal display panel is to apply an electric field to the liquid crystal display panel while employing ultraviolet curing (UVcuring) to tilt the liquid crystal molecules in a desired direction. However, in the VA-type liquid crystal display panel, since it is necessary to widen the viewing angle and to divide the sub-pixels into a plurality of regions, the alignment direction is different in each region, and therefore, the rubbing method is not generally used, but the photo-alignment method is used.

The main stream of optical alignment of the VA-type liquid crystal display panel is to apply an electric field to the liquid crystal display panel while employing ultraviolet curing (UV curing) to cause the liquid crystal to tilt in a desired direction. And the UV2A adopts the polarized UV light to irradiate the alignment layer, so that liquid crystal molecules tilt in the expected direction, the electrification process is omitted, the pixel electrode patterning is not needed, the alignment step and the design scheme can be further simplified, and the alignment precision is higher.

The UV2A (UV VA) technology is a VA (Vertical Alignment) panel technology that performs liquid crystal Alignment using Ultraviolet (UV) light, the name of which comes from multiplication of UV light and the VA mode of a liquid crystal panel, and the key is to control the tilt of liquid crystal molecules along the UV light direction with high precision in picometers by using a special polymer material as an Alignment layer. By using the UV2A technology, the slits and protrusions currently used for controlling the alignment of liquid crystal molecules in the VA mode liquid crystal panel can be omitted, so that the aperture ratio, contrast, and reaction speed of the liquid crystal panel can be improved, and the production process can be greatly reduced.

The UV2A technology can realize a state in which all liquid crystal molecules are tilted in a designed direction by the alignment film, so that the liquid crystal molecules are simultaneously tilted in the same direction when an electric field is applied. Since the panel can be divided into a plurality of regions without using the projections and slits, the aperture ratio is improved by 20% or more compared to the conventional panel divided into a plurality of regions by the projections. The brightness of the backlight lamp is very low, the same brightness as the original brightness can be obtained, the power consumption is reduced, and the reduction of the number of backlight light sources is beneficial to energy conservation and cost saving.

Compared with the UV2A technology, the exposure mode of the SUVA (ultra-fine photo alignment) process of the upgraded version can further improve the light transmittance of the liquid crystal display panel and has better response time performance and color cast characteristic. When the SUVA technology is adopted, for a commonly used domain distribution manner such as a "mu" shape, the slits in the domains extend in different directions in adjacent domains (for example, in adjacent domains, a slit in a domain extending in the X direction is provided in one domain, and a slit in a domain extending in the Y direction is provided in the other domain), display dark fringes are formed at the boundary of the adjacent domains due to instability of liquid crystal molecule orientation, thereby affecting the light transmittance of the liquid crystal display panel. For example, the pixel electrode 10 shown in fig. 1 includes four domains, namely a domain 11, a domain 12, a domain 13, and a domain 14, arranged in a first direction (vertical direction in fig. 1), in-domain slits 110 extending in the same direction are provided in the domain 11, in-domain slits 120 extending in the same direction are provided in the domain 12, in-domain slits 130 extending in the same direction are provided in the domain 13, and in-domain slits 140 extending in the same direction are provided in the domain 14, wherein a display dark fringe is formed at a boundary between the domain 11 and the domain 12, a boundary between the domain 12 and the domain 13, and a boundary between the domain 13 and the domain 14, respectively. For another example, the pixel electrode 20 shown in fig. 2 includes four domains, namely a domain 21, a domain 22, a domain 23, and a domain 24, arranged in the first direction (vertical direction in fig. 2), wherein a dark stripe is formed at a boundary between the domain 21 and the domain 22 and a boundary between the domain 23 and the domain 24.

In a liquid crystal display panel, each pixel electrode usually includes a plurality of domains, and in a domain arrangement method commonly used at present, such as a "mu" shape,

in view of the above, an embodiment of the present invention provides a liquid crystal display device, which includes a liquid crystal display panel and a backlight module, as shown in fig. 3, the liquid crystal display panel 300 includes:

an array substrate 310, including a first substrate 311, a pixel electrode layer 312 disposed on the first substrate 311, and a first alignment layer 313 disposed on a side of the pixel electrode layer 312 far from the first substrate 311, and further including a driving circuit layer (alternatively referred to as a thin film transistor layer, TFT layer) 314;

the color filter substrate 320 is arranged opposite to the array substrate 310, and includes a second substrate 321, a common electrode 322 arranged on the second substrate 321, and a second alignment layer 323 arranged on one side of the common electrode 322 far from the second substrate 321, and in addition, the color filter substrate further includes a color filter layer 324;

the liquid crystal layer 330 is positioned between the array substrate and the color film substrate;

in one possible implementation, the first alignment layer 313 and/or the second alignment layer 323 cause the liquid crystal molecules in the liquid crystal layer 330 to have a predetermined pretilt angle due to the light irradiation treatment, and further, the first alignment layer 313 and/or the second alignment layer 323 cause the liquid crystal molecules in the liquid crystal layer 330 to have a predetermined pretilt angle due to the SUVA process light irradiation treatment.

In this embodiment, the Backlight module (BLU) may be an edge-type Backlight module or a direct-type Backlight module, and the edge-type Backlight module is always in a normally bright state, so that the Backlight power consumption is greatly improved, and the contrast of the image is reduced. The direct type backlight module realizes a Local Dimming technology (Local Dimming), and the Local Dimming technology can change the backlight brightness of different display areas in real time according to the content of a display image, so that the aims of saving the backlight power consumption, improving the contrast of the display image and the like are fulfilled.

As shown in fig. 3, the pixel electrode layer 312 includes a plurality of pixel electrodes 3120 arranged in an array, each pixel electrode 3120 includes a plurality of domains arranged along the first direction, and the plurality of domains includes at least one pair of adjacent domains configured in at least one of the following two ways:

Therefore, according to the liquid crystal display device provided by the embodiment, through the optimized design of the in-domain slit inclination angle arranged in the domain of the pixel electrode, the partial area of at least one domain of the adjacent domains, which is close to the other domain, is set as the transition area where the slit inclination angle is transited between the adjacent domains, so that dark fringes at the boundary of the adjacent domains can be improved, the dark fringe width is reduced, and the light transmittance of the display panel is improved.

In a specific example, as shown in fig. 4, for example, the pixel electrode 3120 in this embodiment is optimized by using a first method for designing adjacent domains with different tilt angles, specifically:

the pixel electrode 3120 includes four domains, a domain 41, a domain 42, a domain 43, and a domain 44, arranged in a first direction (vertical direction in fig. 4).

Optimization is performed between the domains 41 and 42 by the first method: the slits 410 in the first domain extending in the same direction are disposed in the domains 41, the domains 42 are divided into the transition region 421 and the design region 422, the transition region 421 is a partial region of the domains 42 close to the domains 41, the design region 422 is a region of the domains 42 other than the transition region 421, the second slits 4210 in the domains extending in the same direction are disposed in the transition region 421, and the third slits 4220 in the domains extending in the same direction are disposed in the design region 422, wherein as shown in fig. 4, an angle between the slits 4210 in the second domain and the slits 410 in the first domain is larger than an angle between the slits 4220 in the third domain and the slits 410 in the first domain, it is understood that as shown in fig. 4, an extension line of a boundary between a slit 4220 in the third domain and a domain 42 does not intersect with the slit 410 in the first domain, it is understood that an angle between an extension line of a slit 4220 in the third domain and a boundary between a domain 41 and a domain 42 in the first domain may be provided as an extension line between a slit 4220 in the third domain and a boundary between a slit 410 in the first domain, and a boundary between a slit in the adjacent domain may be provided as a case that an extension line between a transition region and a boundary between a slit in the adjacent domain may be provided.

Similar to the optimization between the

domains

41 and 42 in the first mode, as shown in fig. 4, the optimization between the

domains

42 and 43 and between the

domains

43 and 44 is also performed in the first mode, respectively.

In another specific example, as shown in fig. 5, for example, the pixel electrode 3120 in this embodiment optimizes adjacent domains with different slit design tilt angles in the domain by using a second method, specifically:

the pixel electrode 3120 includes four domains, a domain 51, a domain 52, a domain 53, and a domain 54, arranged in the first direction (vertical direction in fig. 5).

The domains 51 and 52 are optimized by a second method: the domain 51 is divided into a transition area 511 and a design area 512, the transition area 511 is a partial area of the domain 51 close to the domain 52, the design area 512 is the other area of the domain 51 except the transition area 511, a fourth intra-domain slit 5110 extending along the same direction is arranged in the transition area 511, and a fifth intra-domain slit 5120 extending along the same direction is arranged in the design area 512; the domains 52 are divided into transition regions 521 and design regions 522, the transition regions 521 are partial regions of the domains 52 close to the domains 51, the design regions 522 are other regions of the domains 52 except the transition regions 521, sixth intra-domain slits 5210 extending in the same direction are arranged in the transition regions 521, and seventh intra-domain slits 5220 extending in the same direction are arranged in the design regions 522; as shown in fig. 5, an angle between the fourth domain slit 5110 and the seventh domain slit 5220 is larger than an angle between the fifth domain slit 5120 and the seventh domain slit 5220, and an angle between the sixth domain slit 5210 and the fifth domain slit 5120 is larger than an angle between the seventh domain slit 5220 and the fifth domain slit 5120.

Similar to the optimization between

domains

51 and 52 using the second method, as shown in fig. 5, the optimization between domains 53 and 54 using the second method is also performed.

As shown in fig. 6, 6-a is a pixel light effect simulation result corresponding to the pixel electrode 20 with the structure shown in fig. 2, and 6-a is a pixel light effect simulation result corresponding to the pixel electrode 3120 with the structure shown in fig. 5, through a comparison experiment, the optimized design of the slit inclination angle in the domain adopted in this example can effectively improve the dark fringe at the boundary between adjacent domains, effectively reduce the dark fringe width, and improve the light transmittance of the liquid crystal display panel by more than 4%.

In addition, in fig. 5, domain 52 and domain 53 are not optimized, but it is understood that domain 52 and domain 53 may be optimized by a second method, if so, domain 52 includes two transition regions close to domain 51 and domain 53 and a design region between the two transition regions, and the second method is defined in such a way that an angle between an intra-domain slit provided in the transition region close to domain 51 of domain 52 and an intra-domain slit provided in the design region of domain 51 is larger than an angle between an intra-domain slit provided in the design region of domain 52 and an intra-domain slit provided in the design region of domain 51, and an angle between an intra-domain slit provided in the transition region close to domain 53 of domain 52 and an intra-domain slit provided in the design region of domain 53 is larger than an angle between an intra-domain slit provided in the design region of domain 52 and an intra-domain slit provided in the design region of domain 53. Similar to domains 52, domains 53 include two transitions and a design region between the two transitions near domains 52 and domains 54, respectively.

On one hand, for the pixel electrode 3120 including a plurality of pairs of adjacent domains with different slit design inclination angles in the domain, the first method and/or the second method may be used to optimize only the adjacent domains with different slit design inclination angles in a partial domain, or the first method may be used to optimize the adjacent domains with different slit design inclination angles in a partial domain, and the second method may be used to optimize the adjacent domains with different slit design inclination angles in another partial domain.

In another specific example, as shown in fig. 7, for example, the pixel electrode 3120 in this embodiment optimizes adjacent domains with different slit design tilt angles in the domain by a first method, specifically:

the pixel electrode 3120 includes four domains, a domain 71, a domain 72, a domain 73, and a domain 74, arranged in the first direction (vertical direction in fig. 7).

The

domains

71 and 72 are optimized by the first method: the first in-domain slits 710 extending in the same direction are provided in the domain 71, the domain 72 is divided into a transition region 721 and a design region 722, the transition region 721 is a partial region of the domain 72 close to the domain 71, the design region 722 is a region of the domain 72 other than the transition region 721, second in-domain slits 7210 extending in the same direction are provided in the transition region 721, and third in-domain slits 7220 extending in the same direction are provided in the design region 722, wherein, as shown in fig. 7, an angle between the second in-domain slits 7210 and the first in-domain slits 710 is larger than an angle between the third in-domain slits 7220 and the first in-domain slits 710.

Similar to the optimization between the

domains

71 and 72, the optimization between the

domains

72 and 73 is also performed in the first way, as shown in fig. 7. Note that, since the domain 72 and the domain 73 are designed to have the same direction of slit extension in the domain, it is not necessary to adopt the slit inclination angle transition design provided in the first or second mode, and the domain 72 and the domain 73 are designed to have the same direction of slit extension in the domain, and as shown in fig. 7, the end point of the third in-domain slit 7220 closest to the domain 73 and the end point of the in-domain slit closest to the domain 72 extending in the same direction in the domain 73 are located on the boundary line between the domain 72 and the domain 73, respectively, thereby ensuring the display effect.

In another specific example, as shown in fig. 8, for example, the pixel electrode 3120 in this embodiment optimizes adjacent domains with different slit design tilt angles in the domain by using a second method, specifically:

the pixel electrode 3120 includes four domains,

domains

81, 82, domains 83, and domains 84, arranged in a first direction (vertical direction in fig. 8).

Optimization is performed between the domains 81 and 82 by a second method: the domains 81 are divided into a transition region 811 and a design region 812, the transition region 811 is a partial region of the domains 81 close to the domains 82, the design region 812 is another region of the domains 81 except the transition region 811, fourth intra-domain slits 8110 extending in the same direction are provided in the transition region 811, and fifth intra-domain slits 8120 extending in the same direction are provided in the design region 812; the domain 82 is divided into a transition area 821 and a design area 822, the transition area 821 is a partial area of the domain 82 close to the domain 81, the design area 822 is other areas of the domain 82 except the transition area 821, a sixth intra-domain slit 8210 extending along the same direction is arranged in the transition area 821, and a seventh intra-domain slit 8220 extending along the same direction is arranged in the design area 822; as shown in fig. 8, an included angle between the fourth intra-domain slit 8110 and the seventh intra-domain slit 8220 is larger than an included angle between the fifth intra-domain slit 8120 and the seventh intra-domain slit 8220, and an included angle between the sixth intra-domain slit 8210 and the fifth intra-domain slit 8120 is larger than an included angle between the seventh intra-domain slit 8220 and the fifth intra-domain slit 8120.

Similar to the optimization between the

domains

81 and 82 using the second method, as shown in fig. 8, the optimization between the

domains

83 and 84 using the second method is also performed.

In one possible implementation, an area of a partial region of the second domain that is close to the first domain occupies 5% to 50% of an area of the second domain, for example, as shown in fig. 4 and 7, an area of a partial region of the second domain that is close to the first domain occupies about 30% of an area of the second domain, for example, an area of the transition region 421 in fig. 4 occupies about 30% of an area of the domain 42. A partial region of the third domain adjacent to the fourth domain occupies 5% to 50% of the area of the third domain, a partial region of the fourth domain adjacent to the third domain occupies 5% to 50% of the area of the fourth domain, for example, as shown in fig. 5 and 8, a partial region of the third domain adjacent to the fourth domain occupies about 30% of the area of the third domain, a partial region of the fourth domain adjacent to the third domain occupies about 30% of the area of the fourth domain, for example, an area of a transition region 511 in fig. 5 occupies about 30% of the area of a domain 51, and an area of a transition region 521 occupies about 30% of the area of a domain 52.

In a possible implementation manner, a difference between an angle between the slit in the second domain and the slit in the first domain and an angle between the slit in the second domain and the slit in the third domain is smaller than a preset threshold, for example, as shown in fig. 4 and 7, an angle between the slit 4210 in the second domain and the slit 410 in the first domain in fig. 4 is substantially equal to an angle between the slit 4210 in the second domain and the slit 4220 in the third domain, for example, the preset threshold is 5 ° to 10 °, and thus it is ensured that an angle change is smoother by providing a transition region. A difference between an angle between the fourth intra-domain slit and the fifth intra-domain slit, an angle between the fourth intra-domain slit and the sixth intra-domain slit, and an angle between the sixth intra-domain slit and the seventh intra-domain slit is smaller than a predetermined threshold, for example, as shown in fig. 5 and 8, an angle between the fourth intra-domain slit 5110 and the fifth intra-domain slit 5120, an angle between the fourth intra-domain slit 5110 and the sixth intra-domain slit 5210, and an angle between the sixth intra-domain slit 5210 and the seventh intra-domain slit 5220 in fig. 5 are substantially equal.

In one possible implementation, the width of the intra-domain slits provided in each of the plurality of domains is the same. For example, as shown in fig. 4, 5, 7, and 8, for example, the widths of the slits 410 in the first domain, the slits 4210 in the second domain, and the slits 4220 in the third domain in fig. 4 are the same.

In one possible implementation, the pitch of the slits in adjacent domains is the same in each of the plurality of domains. For example, as shown in fig. 4, 5, 7 and 8, for example, the slits 410 in the adjacent first domains have the same pitch, the slits 4210 in the adjacent second domains have the same pitch, and the slits 4220 in the adjacent third domains have the same pitch in fig. 4.

In one possible implementation, the third intra-domain slit and its extension line extending to the boundary line between the first domain and the second domain are mirror-symmetric to the first intra-domain slit along the boundary line between the first domain and the second domain, as shown in fig. 4 and 7, for example, the third intra-domain slit 4220 and its extension line extending to the boundary line between the domain 41 and the domain 42 in fig. 4 are mirror-symmetric to the first intra-domain slit 410 along the boundary line between the domain 41 and the domain 42. The fourth intra-domain slit and the sixth intra-domain slit are in mirror symmetry along a boundary line between the third domain and the fourth domain, and the fifth intra-domain slit and the seventh intra-domain slit are in mirror symmetry along a boundary line between the third domain and the fourth domain. For example, as shown in fig. 5 and 8, for example, the fourth in-domain slit 5110 and the sixth in-domain slit 5210 in fig. 5 are mirror-symmetrical along the boundary line between the domain 51 and the domain 52, and the fifth in-domain slit 5120 and the seventh in-domain slit 5220 are mirror-symmetrical along the boundary line between the domain 51 and the domain 52.

In one possible implementation, an extension line of the slit in the first domain extending to the boundary line between the first domain and the second domain and the boundary line between the first domain and the second domain are at an angle of 30 ° to 60 °, for example, as shown in fig. 4 and 7, an extension line of the slit 410 in the first domain extending to the boundary line between the domain 41 and the domain 42 and an angle of 45 ° as shown in fig. 4 and 42, for example. An extension line of the slit in the fifth domain extending to a boundary line between the third domain and the fourth domain makes an angle of 30 ° to 60 ° with respect to a boundary line between the third domain and the fourth domain, as shown in fig. 5 and 8, for example, an extension line of the slit 5120 in the fifth domain extending to a boundary line between the domain 51 and the domain 52 and a boundary line between the domain 51 and the domain 52 are made an angle of 45 ° as shown in fig. 5 and 8, for example.

It should be noted that in the embodiment of the present invention, the slits in the same domain have marks corresponding to the embodiment in the drawings in different embodiments, for example, in fig. 4 and 5, the marks of the slits in each domain are: a first intra-domain slit 410, a second intra-domain slit 4210, a third intra-domain slit 4220, a fourth intra-domain slit 5110, a fifth intra-domain slit 5120, a sixth intra-domain slit 5210, and a seventh intra-domain slit 5220. In fig. 7 and 8, the designation of the slits within each domain is: the first intra-domain slit 710, the second intra-domain slit 7210, the third intra-domain slit 7220, the fourth intra-domain slit 8110, the fifth intra-domain slit 8120, the sixth intra-domain slit 8210, and the seventh intra-domain slit 8220 are merely examples, and do not affect the specific aspect of the embodiments of the present invention.

The display device provided by the embodiment of the invention can be any product or component with a 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, and the embodiment of the invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is further noted that, in the description of the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention and are not intended to limit the embodiments of the present invention, and that various other modifications and variations can be made by one skilled in the art in light of the above description.

Claims

1. An array substrate, comprising a first substrate and a pixel electrode layer disposed on the first substrate, wherein the pixel electrode layer includes a plurality of pixel electrodes arranged in an array, each pixel electrode includes a plurality of domains arranged along a first direction, and the plurality of domains includes at least one pair of adjacent domains disposed in at least one of the following two ways:

2. The array substrate of claim 1, wherein a portion of the second domain area adjacent to the first domain area has an area of 5% -50% of an area of the second domain area, a portion of the third domain area adjacent to the fourth domain area has an area of 5% -50% of an area of the third domain area, and a portion of the fourth domain area adjacent to the third domain area has an area of 5% -50% of an area of the fourth domain area.

3. The array substrate of claim 1 or 2, wherein a difference between an angle between the slit in the second domain and the slit in the first domain and an angle between the slit in the second domain and the slit in the third domain is smaller than a preset threshold, and a difference between an angle between the slit in the fourth domain and the slit in the fifth domain, an angle between the slit in the fourth domain and the slit in the sixth domain, and an angle between the slit in the sixth domain and the slit in the seventh domain is smaller than a preset threshold.

4. The array substrate of claim 1, wherein the intra-domain slits provided in each of the plurality of domains have the same width.

5. The array substrate of claim 4, wherein the slits in adjacent domains are equally spaced within each of the plurality of domains.

6. The array substrate of claim 1, wherein the third intra-domain slit and an extension line thereof extending to a boundary between the first domain and the second domain are mirror-symmetric to the first intra-domain slit along the boundary between the first domain and the second domain, the fourth intra-domain slit and the sixth intra-domain slit are mirror-symmetric along the boundary between the third domain and the fourth domain, and the fifth intra-domain slit and the seventh intra-domain slit are mirror-symmetric along the boundary between the third domain and the fourth domain.

7. The array substrate of claim 6, wherein an extension line of the slit in the first domain extending to a boundary line between the first domain and the second domain forms an angle of 30 ° to 60 ° with respect to the boundary line between the first domain and the second domain, and wherein an extension line of the slit in the fifth domain extending to a boundary line between the third domain and the fourth domain forms an angle of 30 ° to 60 ° with respect to the boundary line between the third domain and the fourth domain.

8. A display panel, comprising:

the array substrate of any one of claims 1-7, further comprising a first alignment layer disposed on a side of the pixel electrode layer distal from the first substrate;

9. The display panel of claim 8, wherein the first alignment layer and/or the second alignment layer provides a pre-tilt angle to liquid crystal molecules in the liquid crystal layer due to SUVA process illumination.

10. A display device characterized by comprising the display panel according to claim 8 or 9.