CN203084378U

CN203084378U - Passive-type multi-domain VA-type liquid crystal displayer

Info

Publication number: CN203084378U
Application number: CN 201220740100
Authority: CN
Inventors: 陈绍军; 侯英光; 左适之
Original assignee: YASHI PHOTOELECTRIC CO Ltd
Current assignee: YASHI PHOTOELECTRIC CO Ltd
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2013-07-24
Anticipated expiration: 2022-12-28

Abstract

The utility model relates to a passive-type multi-domain VA-type liquid crystal displayer which is characterized in that identical pixels on an upper ITO layer and a lower ITO layer are divided by a plurality of strip-shaped fine seams which are evenly distributed in parallel, the fine seams on the upper ITO layer and the lower ITO layer are distributed in a staggered mode, the friction direction on an upper PI orientation layer and the friction layer on a lower PI orientation layer are opposite, and angles of friction patterns and the fine seams on the corresponding upper ITO layer and the lower ITO layer are 90 degrees +/- 5 degrees. The passive-type multi-domain VA-type liquid crystal displayer has the advantages that a black background, white fonts and characters of no dispersion and no crossed effects of a traditionally passive-type VA-type product are reserved, meanwhile the problem of dark space of a visual angle reverse direction is avoided, and good contrast effects can be achieved when observation in a full view is carried out.

Description

A kind of passive type multidomain VA type LCD

Technical field

The utility model relates to a kind of display, particularly VA type multidomain liquid crystal display.

Background technology

In recent years, LCD has been widely used in the numerous areas of national economy and national defense safety, continuous development along with science and technology and human living standard, tradition passive type TN and STN type are because the restriction on the displaying principle, the problem that on display effect, always has chromatic dispersion, although adopted the mode of compensate film to wish to realize dispersionless display effect, effect is not satisfactory; The passive type VA type product that goes out newly developed has in recent years been avoided chromatic dispersion problem fully on principle, and shows that contrast also can bring up to more than 500, has satisfied a part of client's the demand to high end performance.But a part of client also has higher requirement to the width of display view angle.This is the problem that can't resolve with VA type product in earlier stage.

Summary of the invention

The purpose of this utility model provides a kind of multidomain VA type LCD of super wide visual angle, adopt the way of pixel segmentation, realize display properties such as super wide visual angle, high-contrast demonstration, no chromatic dispersion, production cost is had only slight increase, can produce fully with the existing passive type product line of producing.

For achieving the above object, the utility model is realized by the following technical solutions:

A kind of passive type multidomain VA type LCD, comprise top glass substrate, go up the ITO layer, go up the PI oriented layer, liquid crystal layer, wadding, PI oriented layer, ITO layer, lower glass substrate and be used to seal the frame adhesive of PI oriented layer, liquid crystal layer, following PI oriented layer down down, it is characterized in that, the described same pixel that goes up on ITO layer, the following ITO layer is cut apart by equally distributed a plurality of fine strip shape finedraws, and a plurality of fine strip shape finedraws are parallel evenly distributed, and the finedraw of going up on ITO layer, the following ITO layer is staggered; Describedly go up the PI oriented layer, the frictional direction on the PI oriented layer is opposite down, and with pairingly go up the ITO layer, the finedraw angle that direction is on the ITO layer is 90 ° ± 5 ° down.

Describedly go up the ITO layer, the finedraw width a on the ITO layer is 10-15 μ m down, is 25-45 μ m apart from b between two parallel slits.

The described tilt angle of PI oriented layer, following PI oriented layer of going up is between 85 °-90 °.

Compared with prior art, the beneficial effects of the utility model are:

1) this passive type multidomain VA type LCD has no dark space, and all directions visual angle is wide,

2) this passive type multidomain VA type LCD does not have chromatic dispersion, contrast height (150-1000), and no cross effect or very light cross effect have kept the advantage of passive type VA type LCD in earlier stage.

3) this passive type multidomain VA type LCD can be produced utilizing existing equipment, does not increase cost.

Description of drawings

Fig. 1 is the structural representation of passive type multidomain VA type LCD.

Fig. 2 is the synoptic diagram of the liquid crystal cell of passive type multidomain VA type LCD.

Fig. 3 is a Liquid Crystal Molecules Alignment synoptic diagram relatively in the arrangement of liquid crystal molecule in the passive type multidomain VA type LCD liquid crystal cell and the traditional passive type VA type LCD.

Fig. 4 is counter electrode up and down and the frictional direction synoptic diagram that forms after the passive type multidomain VA type liquid crystal display pixel electrode etching.

In the drawings: 1 - (composite film) Polarizer,, 2 - liquid crystal cell,, 3 - (composite film) Polarizer,, 4 - the upper glass substrate,, 5 - on the ITO layer, 6 - PI alignment layer on,, 7 - liquid crystal layer,, 8 - spacers,, 9 - next PI alignment layer,, 10 - under the ITO layer,, 11 - under glass substrate, 12 - border gum,, 13 - passive multidomain VA in the display when the liquid crystal molecules status,, 14 - passive multidomain VA in the non-display of the liquid crystal molecular state, or the conventional VA type display in the non-display of the liquid crystal molecules status,, 15 - conventional VA type display in the display of the liquid crystal molecules status, , 16 - upper ITO a pixel arrangement direction of the slit and location,, 17 - rubbing direction,, 18 - lower ITO pixel arrangement direction of the slits and locations.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

A kind of passive type multidomain VA type LCD is seen Fig. 1, comprises (composite membrane) polaroid 1, liquid crystal cell 2, (composite membrane) polaroid 3 of being provided with from top to bottom.See Fig. 2, liquid crystal cell comprises from top to bottom the top glass substrate 4, the upper strata ITO layer 5 that are provided with, goes up PI oriented layer 6, liquid crystal layer 7, wadding 8, PI oriented layer 9, ITO layer 10, lower glass substrate 11 down down, also comprise be used to seal frame frame adhesive 12.In the liquid crystal layer 7, wadding 8 is every square millimeter of 60-180 with density range and evenly distributes, filled by liquid crystal 7 on every side; Liquid crystal layer 7 is the homeotropic alignment nematic, and thickness range is 3.0 μ m-6.0 μ m; Top glass substrate 4, last ITO layer 5 and lower glass substrate 11, following ITO layer 10, the thickness of glass substrate scope is 0.55mm-1.1 mm, resistance scope in ITO side's is 7 Ω/-120 Ω/.

Among Fig. 3,

label

13 and 14 is the show state and the non-show state of liquid crystal molecule in the passive type multidomain VA type LCD,

label

14 and 15 is the non-show state and the show state of liquid crystal molecule in traditional VA type LCD, and show state wherein is the state when powering on.Among Fig. 4, label 16 is the direction and the position of finedraw in the last ITO layer, and label 18 is the direction and the position of finedraw in the ITO layer down, wherein up and down the finedraw in the ITO layer for being staggered the non-correspondence up and down in position.Label 17,18 is the friction line direction on upper and lower PI oriented layer, under show state, realize that by control friction line direction liquid crystal molecule tilts to a direction, the change of the direction of an electric field that forms by the stria in the same pixel, realized that the other a part of molecule of control tilts in the opposite direction, therefore the utility model has realized forming the Liquid Crystal Molecules Alignment of two kinds of vergence directions on each pixel, thereby forms multidomain, shown in label among Fig. 3 13.

The composite membrane degree of polarization is composited at the compound compensate film of 0-100nm at the offset of 220-880nm and Rth as substrate and Re offset greater than the high-polarization anti-dazzle polaroid more than 99% (or 99% above high-polarization dazzle polaroid).It all is being that the black matrix look does not have light leak under all angles under the non-show state that effect by composite membrane makes the LCD of the method manufacturing.Under show state, owing to the multidomain of the liquid crystal molecule on each pixel is arranged two kinds of vergence directions that form, avoided the dark space, reached super wide visual angle, no chromatic dispersion, the display effect that contrast is high.

A kind of manufacturing process of passive type multidomain VA type LCD may further comprise the steps:

1) by the needs of client to displaying contents, determine the pattern content of passive type multidomain VA type LCD and pixel what, etching on top glass substrate ITO layer and lower glass substrate ITO layer respectively, form pixel, form the fine strip shape finedraw of pressing certain orientation, position, big minispread on the pixel;

2) be coated with the PI alignment agent in the ITO of top glass substrate and lower glass substrate side, the tilt angle of last PI oriented layer, following PI oriented layer is 85 ° of-90 ° of degree;

3) after the PI alignment agent solidifies, rub on the PI oriented layer with flannelette, the direction of the friction line of formation and finedraw angle that direction is are 90 ° ± 5 °;

4) be the wadding of 3.0 μ m-6.0 μ m at last ITO laminar surface spray diameter range, making wadding be 60 every square millimeter-180 with density range evenly distributes, guarantee that thickness of liquid crystal box is between scope 3.0 μ m-6.0 μ m, be coated with frame adhesive and leave a plurality of perfusing holes, the back of fitting forms liquid crystal cell;

5) in liquid crystal cell, pour into liquid crystal by perfusing hole, liquid crystal in the liquid crystal cell is a negative dielectric anisotropy liquid crystal, under non-show state, liquid crystal molecule is homeotropic alignment in liquid crystal cell, under show state, liquid crystal molecule on each pixel forms passive type multidomain arrangement mode to the both direction oblique arrangement; Need heat maintenance during perfusion, seal and adopt freezing sealing;

6) behind the envelope perfusing hole, the compound polaroid of fitting and to be composited at the compound compensate film of 0-100nm at the offset of 220-880nm and Rth at the liquid crystal cell upper surface by the Re offset.

It is on pattern and two kinds of display graphics of lattice pixels that this method can be applicable to displaying contents.

Among the embodiment, the use that matches with external control chip MCU of passive type multidomain VA type LCD to chip for driving input data, through calculating the screen by programmed control LCD, shows required content by serial line interface (PIN pin) on LCD display

The above only is a preferred embodiment of the present utility model; be not limited to the utility model; for a person skilled in the art; the utility model can have various changes and variation; all within spirit of the present utility model and principle; any modification of being done, be equal to replacement, improvement etc., all should be included in the protection domain of the present utility model.

Claims

1. passive type multidomain VA type LCD, comprise top glass substrate, go up the ITO layer, go up the PI oriented layer, liquid crystal layer, wadding, PI oriented layer, ITO layer, lower glass substrate and be used to seal the frame adhesive of PI oriented layer, liquid crystal layer, following PI oriented layer down down, it is characterized in that, the described same pixel that goes up on ITO layer, the following ITO layer is cut apart by equally distributed a plurality of fine strip shape finedraws, and a plurality of fine strip shape finedraws are parallel evenly distributed, and the finedraw of going up on ITO layer, the following ITO layer is staggered; Describedly go up the PI oriented layer, the frictional direction on the PI oriented layer is opposite down, and with pairingly go up the ITO layer, the finedraw angle that direction is on the ITO layer is 90 ° ± 5 ° down.

2. a kind of passive type multidomain VA type LCD according to claim 1 is characterized in that, describedly goes up the ITO layer, the finedraw width a on the ITO layer is 10-15 μ m down, is 25-45 μ m apart from b between two parallel slits.

3. a kind of passive type multidomain VA type LCD according to claim 1 is characterized in that, the described tilt angle of PI oriented layer, following PI oriented layer of going up is between 85 °-90 °.