CN102243400A

CN102243400A - Liquid crystal display

Info

Publication number: CN102243400A
Application number: CN2011101934823A
Authority: CN
Inventors: 焦峰
Original assignee: Nanjing CEC Panda LCD Technology Co Ltd
Current assignee: Nanjing CEC Panda LCD Technology Co Ltd
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2011-11-16

Abstract

The invention discloses a liquid crystal display comprising a color film substrate, an array substrate, a liquid crystal layer, a columnar upholder and a graphic pillowing object, wherein the array substrate is arranged opposite to the color film substrate, and a gap between the array substrate and the color film substrate is named as the thickness of a liquid crystal box; the liquid crystal layer is distributed between the color film substrate and the array substrate; the columnar upholder is arranged on the color film substrate; and the graphic pillowing object is arranged on an insulation layer of the array substrate at a place corresponding to the columnar upholder so that a step is formed at a corresponding position on the surface of the array substrate, and the step is in contact with the upper bottom of the columnar upholder. According to the invention, by means of the pillowing object arranged at a graphic array substrate side for supporting the columnar upholder at a color film substrate side, the friction force between the columnar upholder and the pillowing object is enhanced, the columnar upholder and the pillowing object are prevented from displacement, so that the thickness of the liquid crystal box is prevented from unevenness, and unfavorable phenomena such as extrusion, light leakage and the like are reduced.

Description

LCD

Technical field

The invention belongs to the display technology field, particularly a kind of LCD.

Background technology

Traditional CRT monitor relies on the phosphor powder on the cathode-ray tube (CRT) emitting electrons bump screen to come display image, but the principle of liquid crystal display is then different fully.Usually, liquid crystal display (LCD) device has upper substrate and infrabasal plate, have each other certain intervals and mutually over against.Be formed on two substrates a plurality of electrodes mutually over against.Liquid crystal is clipped between upper substrate and the infrabasal plate.Voltage is applied on the liquid crystal by the electrode on the substrate, thus then according to the voltage that acted on change the arrangement display image of liquid crystal molecule, because liquid crystal indicator is not launched light as mentioned above, it needs light source to come display image.Therefore, liquid crystal indicator has the backlight that is positioned at the liquid crystal panel back.Thereby the arrangement according to liquid crystal molecule is controlled from backlight quantity of incident light display image.As shown in Figure 1, accompany color membrane substrates 104, common electrode 105, liquid crystal layer 106 and array base palte 107 between upper strata polaroid 101 and the lower floor's polaroid 109, liquid crystal molecule is the material with refractive index and dielectric constant anisotropy.On array base palte 107, form pixel electrode 108, thin film transistor (TFT) (TFT) 114, array sub-pixel 111, sweep trace 110, signal wire 112 etc.Signal wire 112 is connected to the drain electrode of TFT, and pixel electrode 108 is connected to source class, and sweep trace 110 is connected to grid.The light process that backlight 113 sends is polaroid 109 down, becomes the polarized light with certain polarization direction.Institute's making alive between the thin film transistor (TFT) 114 control pixel electrodes 108, and this voltage acts on the polarization direction that liquid crystal is controlled polarized light, polarized light sees through corresponding color film 102 backs and forms monochromatic polarized light, if polarized light can penetrate upper strata polaroid 101, then demonstrates corresponding color; Electric field intensity difference, the deflection angle of liquid crystal molecule are also different, and the light intensity that sees through is different, and the brightness of demonstration is also different.The combination of the different light intensity by three kinds of colors of RGB shows motley image.

In the above-mentioned display device, the interval (liquid crystal cell is thick) that color membrane substrates 104 and array base palte are 107 is to keep by spherical or bar-shaped stilt plastics or glass.Usually, the stilt before baseplate-laminating scatters in the engineering, scatters on the substrate of a side.Afterwards, the both sides baseplate-laminating is exerted pressure by the outside at two substrates, and the thick value of liquid crystal cell is set in about the diameter of stilt.

But, the stilt that in pixel, scatters, it is bad and cause light leak to be easy to generate LCD alignment.Therefore the contrast of display device can descend, and causes display quality to descend.In addition, uneven if stilt scatters, the box in the substrate is thick also can be uneven, thereby produce luminance nonuniformity, influences quality.Be accompanied by diminishing of Pixel Dimensions in addition, the area of a pixel has diminished, and the area of stilt is bigger than change with respect to the area of pixel, and the influence to display quality becomes significantly from stilt.

Along with the maximization of substrate size and diminishing of Pixel Dimensions, the column support of bringing into use the photoresist material to make replaces spherical stilt or bar-shaped stilt now.Column support mainly is made on the color membrane substrates 104, makes by photosensitive resin coating, exposure, development.It can be configured on the light shield layer 103 (BM:Black Matrix) of color membrane substrates 104 according to density arbitrarily, because light shield layer 103 is lighttight materials, so avoided the light leak that causes because orientation is bad bad.And the very homogeneous that can do of the thickness of column support (highly), make the thick homogeneity of liquid crystal cell in the substrate can do finely, avoided the luminance nonuniformity that produces because of box thickness ununiformity.Than spherical stilt, the display characteristic of the display device of column support is better.

Fig. 2 is the pixel sectional schematic diagram of the viewing area of liquid crystal cell, is followed successively by from top to bottom: color film side glass substrate 115, light shield layer 103, chromatograph 116, color film side indium tin oxide (ITO) layer 117, column support 118, liquid crystal layer 106, insulation course 119, the bolster thing 120 of array base palte side, array side glass substrate 121.

Fig. 3 is the floor map of the viewing area of color membrane substrates, 3 blue, green, red sub-pixels are in the unit, disposed a column support 118, the density of each column support 118 configurations is certain in whole, their size and highly general also be consistent.

As shown in Figure 4, the column support 118 on the color membrane substrates is bench-type bodies of the truncated cone-shaped that is made of round upper bottom surface 122 and bottom surface 123, and the diameter of going to the bottom is greater than the upper base diameter.

At present, the interval between color membrane substrates and array base palte (liquid crystal cell is thick) kept afterwards by column support and bolster thing mutual extrusion.In the manufacturing and use of actual product, can take place because external force extruding display screen, cause substrate to produce distortion, if the friction force between stilt and bolster thing is less, can make column support and bolster thing be shifted, if irreclaimable words, the box that will change this place's liquid crystal cell is thick, and cause bad phenomenon such as light leak, the bad extruding light leak that is commonly called of this kind.

Summary of the invention

Goal of the invention:, the purpose of this invention is to provide a kind of LCD that reduces the extruding light leak at the problem and shortage of above-mentioned existing existence.

Technical scheme: for achieving the above object, the technical solution used in the present invention is a kind of LCD, comprising:

One color membrane substrates;

Array basal plate is oppositely arranged with described color membrane substrates, and it is thick that the interval of this array base palte and color membrane substrates is called liquid crystal cell;

One liquid crystal layer is arranged between described color membrane substrates and the described array base palte;

Column support is located on the described color membrane substrates;

Place at the corresponding column support of the insulation course of described array base palte is provided with graphical bolster thing, makes the correspondence position on array base palte surface produce step, and this step contacts with the upper base of described column support.

The graphics area of described graphical bolster thing can be greater than the upper base area of described column support.

Described graphical bolster thing can be by the made of data line, and the figure of described graphical bolster thing can be reticulate texture figure or list structure figure.Described graphical bolster thing also can be by the made of sweep trace, and the figure of described graphical bolster thing can be reticulate texture figure or list structure figure.

The material of described graphical bolster thing (being the material of data line or sweep trace) but can be film forming metals such as aluminium, chromium, copper, thickness at 1000 dusts to 10000 dusts.The bolster thing is carried out patterned method, can be methods such as mask (exposure), printing, ink-jet.

Beneficial effect: the present invention is used for supporting the bolster thing of color membrane substrates lateral column shape stilt by graphical array base palte side, strengthen column support and and the bolster thing between friction force, stop column support and bolster thing to be shifted, avoid causing the liquid crystal cell box thickness ununiformity, reduce bad generations such as extruding light leak.

Description of drawings

Fig. 1 is the arraying bread board synoptic diagram of traditional active matrix liquid crystal display apparatus;

Fig. 2 is the pixel directions X sectional schematic diagram of the viewing area of liquid crystal cell;

Fig. 3 is the floor map of the viewing area of color membrane substrates;

Fig. 4 is the profile synoptic diagram of column support;

Fig. 5 is the pixel Y direction sectional drawing of the viewing area of embodiment 1 liquid crystal cell;

Fig. 6 is the planimetric map at graphical bolster thing place among the embodiment 1;

Fig. 7 is the pixel Y direction sectional drawing of the viewing area of embodiment 2 liquid crystal cells;

Fig. 8 is the planimetric map at graphical bolster thing place among the embodiment 2.

Embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.

Embodiment 1:

As shown in Figure 5, be followed successively by from top to bottom: color film side glass substrate 115, black light shield layer 103, chromatograph 116, color film side indium tin oxide (ITO) common electrode 117, column support 118, liquid crystal layer 106, insulation course 119, the first graphical bolster thing 122 of array base palte side, array side glass substrate 121.The first graphical bolster thing 122 of column support 118 and array base palte side supports mutually, makes liquid crystal cell keep certain one-tenth-value thickness 1/10.

As shown in Figure 6, the figure of the first graphical bolster thing 122 can be reticulate texture or list structure figure, and the area of the first graphical bolster thing 122 is greater than the upper base area of column support 118.

Embodiment 2:

As shown in Figure 7, be followed successively by from top to bottom: color film side glass substrate 115, black light shield layer 103, chromatograph 116, color film side indium tin oxide (ITO) common electrode 117, column support 118, liquid crystal layer 106, insulation course 119, the second graphical bolster thing 123 of array base palte side, the sweep trace layer 124 of array base palte side, array side glass substrate 121.The second graphical bolster thing 123 of column support 118 and array base palte side supports mutually, makes liquid crystal cell keep certain one-tenth-value thickness 1/10.

As shown in Figure 8, the figure of second graphical bolster thing 123 can be reticulate texture or list structure figure, and the area of second graphical bolster thing 123 is greater than the upper base area of column support 118.

Claims

1. LCD comprises:

One color membrane substrates;

Column support is located on the described color membrane substrates;

2. according to the described LCD of claim 1, it is characterized in that: the graphics area of described graphical bolster thing is greater than the upper base area of described column support.

3. according to claim 1 or 2 described LCD, it is characterized in that: described graphical bolster thing is by the made of data line, and the figure of described graphical bolster thing is reticulate texture figure or list structure figure.

4. according to claim 1 or 2 described LCD, it is characterized in that: described graphical bolster thing is by the made of sweep trace, and the figure of described graphical bolster thing is reticulate texture figure or list structure figure.

5. according to claim 1 or 2 described LCD, it is characterized in that: the thickness of described graphical bolster thing is that 1000 dusts are to 10000 dusts.

6. according to claim 1 or 2 described LCD, it is characterized in that: the manufacture method of described graphical bolster thing is for to carry out mask or printing or ink-jet to the bolster thing.