CN103488005B

CN103488005B - A kind of liquid crystal panel

Info

Publication number: CN103488005B
Application number: CN201310453518.6A
Authority: CN
Inventors: 吴剑龙; 焦峰; 王海宏
Original assignee: Nanjing CEC Panda LCD Technology Co Ltd
Current assignee: Nanjing CEC Panda LCD Technology Co Ltd
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2016-05-25
Anticipated expiration: 2033-09-29
Also published as: CN103488005A

Abstract

A kind of liquid crystal panel, the pixel electrode of employing and black matrix" are not common regular rectangles, but a kind of stairstepping. This liquid crystal panel can not increase any cost, and does not change under the situation of aperture opening ratio, improves the viewing angle compensation effect of oblique viewing angle.

Description

A kind of liquid crystal panel

Technical field

The present invention relates to manufacturing field of flat panel, concrete is a kind of liquid crystal panel with non-linear pixel electrode.

Background technology

Light process of alignment is to adopt the mask plate with shading strip to carry out orientation to alignment film, as shown in Figure 1, so the orientation region forming in the process of orientation is to exist in strip mode. General sub-pixel forms 4Domain or 8Domain, and in Domain, the pre-dumping direction of liquid crystal requires consistent. If inconsistent, can between inconsistent region, form black line. Black line can take part opening, therefore considers from aperture opening ratio angle, pixel electrode can be arranged in fewer orientation region as far as possible. In order to coordinate the shape in orientation region, ensure that liquid crystal is toppled over unanimously in pixel electrode, generally pixel electrode can be done orthogonal, particularly on the border, left and right of pixel electrode. As depicted in figs. 1 and 2, border, the left and right spacing of pixel electrode is generally less, taking existing company product as example, has the product of JAS to accomplish the distance of 6um.

UV²A technology is the state-of-the-art panel technology of current VA type, is having very large advantage aspect aperture opening ratio, contrast, visual angle. This kind of technology adopts more advanced light orientation, in specific region, adopts the polarization laser tilting to irradiate, and can form the tilt angle with specific direction. Various tilt angle direction, can be formed on the gray scale compensation under the situation of angle of squint, increases visible angle.

UV²A profile plate forms 4Domain or 8Domain, forms the compensation of oblique viewing angle between each Domain. Generally, in order to ensure the even of visual angle, generally 4Domain or 8Domain can be designed to decile. The open region of pixel is generally to be defined by black matrix" BM, and BM is defined the control of liquid crystal by pixel electrode. In pixel openings region, between each Domain, also have black line with the marginal position of pixel electrode. These black lines can affect opening. The black line that particularly pixel electrode marginal position forms, this black line not only affects opening, also can form impact to glazed area between each Domain. Data show, at least ensure that maximum and minimum area is more or less the same in 15% between each Domain. As shown in Figure 3, this kind of product is the design of decile 8Domain. But because the acting in conjunction meeting of light orientation and pixel edge electric field forms the black line as Swastika font in pixel. The existence of black line can cover part opening, and causes the inequality of glazed area between each Domain. This sub-pixel size is 510.75um*170.25um, can find out more significantly varying in size of black line shading light part between each Domain, i.e. light transmission part difference. Can find out difference although this, not differ so large more serious stage to 15%. If design in less pixel, as 32 cun of 4K2K products, now sub-pixel size is 181.5um*60.5um, and the area of so black line shading is larger, rough estimate, and black line can account for about 20% opening. Now between each Domain, glazed area difference has been exactly the amount that can not ignore. That is to say that under the angle of squint that between Domain and Domain, light transmission part forms, gray scale compensation can variation. Fig. 4 has provided the design of 4Domain, forms the black line as Swastika font in pixel.

Summary of the invention

The object of the invention is the present situation for the GTG weak effect that between the each Domain of available liquid crystal panel pixel, glazed area inequality causes, adjust by the pixel electrode to liquid crystal panel and black matrix" shape, provide the glazed area in a kind of each Domain to be tending towards on average, thering is the liquid crystal panel of the gray scale compensation of better oblique viewing angle.

Technical scheme:

A kind of liquid crystal panel, this liquid crystal panel comprises array base palte and the color membrane substrates placed up and down, and the liquid crystal layer clamping between two substrates;

On the glass plate of array base palte, to being provided with successively the first metal layer, the first insulating barrier, semiconductor active layer, the second metal level, passivation layer, pixel electrode layer, light alignment film between liquid crystal layer, wherein on passivation layer, be formed with contact hole; Pixel electrode layer comprises pixel electrode,

On the glass plate of color membrane substrates, to being provided with successively black-matrix layer, RGB color blocking layer, ITO layer, light alignment film between liquid crystal layer, wherein black-matrix layer comprises black matrix", and black matrix" is horizontal and vertical shading strip in liquid crystal panel viewing area; The sub-pixel that RGB color blocking layer comprises multiple adjacent arrangements, each sub-pixel forms 4Domain or 8Domain, and sub-pixel is between each Domain and the marginal position Cun Swastika font black line corresponding with pixel electrode.

The described shape that is positioned at the pixel electrode on array base palte, its border, left and right is non-linear type, this border comprises the first longitudinal edge, the second longitudinal edge and linkage section, described the first longitudinal edge is straightway and parallel with the second longitudinal edge, and described linkage section is any line segment including broken line, straightway, curved section;

The described black matrix" being positioned on color membrane substrates, the shape of its longitudinal shading strip is consistent with the shape of described pixel electrode, and described RGB sub-pixel is under the driving and black matrix" shading of described pixel electrode, and the glazed area of each Domain equates.

As the preferred technical scheme of one, the linkage section on the border, pixel electrode left and right on described array base palte is straightway.

Further, the length of first longitudinal edge on the border, pixel electrode left and right on described array base palte is corresponding with the longitudinal axis first half that sub-pixel forms the black line of Swastika font at this Domain, the length of the second longitudinal edge is corresponding with the longitudinal axis Lower Half that sub-pixel forms the black line of Swastika font at this Domain, and the position of linkage section is corresponding with the axis that sub-pixel forms the black line of Swastika font at this Domain.

Further, first longitudinal edge on border, pixel electrode left and right on described array base palte and the horizontal range of the second longitudinal edge are between 0.1 ~ 20um.

Beneficial effect of the present invention:

Liquid crystal panel is taked after the shape of such pixel electrode and black matrix", and under the prerequisite that does not increase cost, the glazed area in each Domain of pixel is tending towards on average, has reached the gray scale compensation effect under better oblique viewing angle.

Brief description of the drawings

Fig. 1 is that UVMask shading strip carries out light orientation schematic diagram.

Fig. 2 is the partial enlarged view of a-quadrant shown in Fig. 1, is pixel electrode schematic diagram.

Fig. 3 is BM structure and the black print image of prior art 8Domain sub-pixel design.

Fig. 4 is BM structure and the black print image of prior art 4Domain sub-pixel design.

Fig. 5 is the schematic diagram that border, pixel electrode of the present invention left and right linkage section is curved section.

Fig. 6 is the schematic diagram that border, pixel electrode of the present invention left and right linkage section is straightway.

Fig. 7 is BM structure and the black print image of 8Domain sub-pixel design of the present invention.

Fig. 8 is BM structure and the black print image of 4Domain sub-pixel design of the present invention.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is further illustrated.

Embodiment 1: as shown in Figure 1 and Figure 5, Fig. 1 is a certain pixel, and its sub-pixel size is 510.75um*170.25um, in the prior art, its border, sub-pixel left and right is straight vertical line style, spacing is 6um. But under this kind of situation, not etc., maximum does not differ approximately 6% to the glazed area of each Domain in pixel. The present embodiment redesigns the sub-pixel of pixel shown in Fig. 1, and as shown in Figure 5, its border, left and right is non-linear type, and this border comprises the first longitudinal edge, the second longitudinal edge and linkage section, and the first longitudinal edge is straightway and parallel with the second longitudinal edge;

The length of first longitudinal edge on the border, pixel electrode left and right on array base palte is corresponding with the longitudinal axis first half that sub-pixel forms the black line of Swastika font at this Domain, the length of the second longitudinal edge is corresponding with the longitudinal axis Lower Half that sub-pixel forms the black line of Swastika font at this Domain, and the position of linkage section is corresponding with the axis that sub-pixel forms the black line of Swastika font at this Domain. The horizontal range of the first longitudinal edge and the second longitudinal edge is 3um, and linkage section is curved section.

On color membrane substrates, the shape of longitudinal shading strip of black matrix" and the shape of described pixel electrode are consistent.

By to pixel electrode with the redesign of the BM answering in contrast, between each Domain, glazed area is more even, and it is only 0.4% that maximum differs. Compared with 6% former design, uniformity is significantly improved.

Embodiment 2: as shown in Fig. 1 and Fig. 6, Fig. 1 is a certain pixel, and its sub-pixel size is 510.75um*170.25um, in the prior art, its border, sub-pixel left and right is straight vertical line style, spacing is 6um. But under this kind of situation, not etc., maximum does not differ approximately 6% to the glazed area of each Domain in pixel. The present embodiment is substantially the same manner as Example 1, is designed to straightway, as shown in Figure 6 on the linkage section of the first longitudinal edge and the second longitudinal edge. Under this kind of situation, can reach the display effect identical with embodiment 1.

The pixel electrode of any shape in embodiment 1 or embodiment 2 and black matrix" are applied in the liquid crystal panel of sub-pixel formation 8Domain, as shown in Figure 7, glazed area in each Domain of pixel is tending towards on average, has reached the gray scale compensation effect under better oblique viewing angle.

The pixel electrode of any shape in embodiment 1 or embodiment 2 and black matrix" are applied in the liquid crystal panel of sub-pixel formation 4Domain, as shown in Figure 8, glazed area in each Domain of pixel is tending towards on average, has reached the gray scale compensation effect under better oblique viewing angle.

The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.

Claims

1. a liquid crystal panel, this liquid crystal panel comprises array base palte and the color membrane substrates placed up and down, and the liquid crystal layer clamping between two substrates;

On the glass plate of color membrane substrates, to being provided with successively black-matrix layer, RGB color blocking layer, ITO layer, light alignment film between liquid crystal layer, wherein black-matrix layer comprises black matrix", and black matrix" is horizontal and vertical shading strip in liquid crystal panel viewing area; The sub-pixel that RGB color blocking layer comprises multiple adjacent arrangements, each sub-pixel forms 4Domain or 8Domain, sub-pixel between each Domain and the marginal position Cun Swastika font black line corresponding with pixel electrode,

It is characterized in that

The described shape that is positioned at the pixel electrode on array base palte, its border, left and right is non-linear type, and this border comprises the first longitudinal edge, the second longitudinal edge and linkage section, and described the first longitudinal edge is straightway and parallel with the second longitudinal edge; First longitudinal edge on border, pixel electrode left and right and the horizontal range of the second longitudinal edge on described array base palte are between 0.1～20um;

The described black matrix" being positioned on color membrane substrates, the shape of its longitudinal shading strip is consistent with the shape of described pixel electrode;

In described sub-pixel, the glazed area of each Domain equates.

2. a kind of liquid crystal panel according to claim 1, is characterized in that the linkage section on the border, pixel electrode left and right on described array base palte is straightway.

3. a kind of liquid crystal panel according to claim 1, it is characterized in that the longitudinal axis first half that length and the sub-pixel of first longitudinal edge on the border, pixel electrode left and right on described array base palte form the black line of Swastika font at this Domain is corresponding, the length of the second longitudinal edge is corresponding with the longitudinal axis Lower Half that sub-pixel forms the black line of Swastika font at this Domain, and the position of linkage section is corresponding with the axis that sub-pixel forms the black line of Swastika font at this Domain.