CN102629022B - Display device, liquid crystal display panel and manufacturing method of liquid crystal display panel - Google Patents

Abstract

The invention relates to the technical field of displays, in particular to a display device, a liquid crystal display panel and a manufacturing method of the liquid crystal display panel. The liquid crystal display panel comprises a color film substrate, an array substrate, liquid crystals and polarizers; the two polarizers are respectively arranged on the color film substrate and the array substrate; and a phase compensation film is arranged between the two polarizers. According to the liquid crystal display panel and the manufacturing method thereof, which are provided by the invention, due to the adoption of the phase compensation film, the phenomenon of dark state light leakage caused by deflection of the liquid crystals at the positions of a grid electrode and a source and drain electrode layer due to the generation of irregular terminal differences can be effectively avoided; the design of a black matrix in the color film substrate in the prior art can be canceled by the additionally arranged phase compensation film, so that the color film process program is simplified; and the aperture ratio of a pixel electrode and the light energy utilization rate of backlight can be effectively improved, the light energy loss is furthest reduced and the excellent rate of the product is improved.

Description

A kind of display device, liquid crystal panel and preparation method thereof

Technical field

The present invention relates to display technology field, particularly a kind of display device, liquid crystal panel and preparation method thereof.

Background technology

TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Transistor (TFT) liquid crystal display) primary structure is made up of parts such as array base palte, color membrane substrates, polaroid, backlight and liquid crystal.Wherein, substrate forms thin-film transistor structure by deposition of gate, gate insulation layer, active layer, source layer, drain electrode layer, pixel electrode layer; Substrate forms color membrane substrates by depositing black matrix, rgb pixels, pixel protective seam, common electrode layer and chock insulator matter respectively.In vacuum in box technique, liquid crystal is evenly instiled after on array base palte or color membrane substrates, color membrane substrates or array base palte are carried out box with it, adopt sealed plastic box to be filled by four bandings simultaneously.After box is completed, color membrane substrates and array base palte attach upper and lower polaroid respectively, then be combined with backlight and form final modular structure.

The display mode of usual liquid crystal display can be divided into often black (Normal Black) pattern and Chang Bai (Normal White) pattern, for normal white mode, when liquid crystal not applying any operating voltage, rod shaped liquid crystal molecule can be similar to the attitude arrangement lain low, at this moment the degree that light can be maximum, by upper and lower polaroid, is rendered as on state of; When applying a voltage on liquid crystal, liquid crystal along with the difference of voltage, can stand into different angles, voltage is larger, and liquid crystal angle of standing is steeper, and the light penetrating upper and lower polaroid is fewer, until during liquid crystal standing upright, light hardly by, be rendered as dark-state.The displaying principle of liquid crystal display mainly utilizes electric field to carry out tropism control to liquid crystal molecule, and the refractive anisotrop of liquid crystal makes transmitance change, thus carries out image display.

The light that backlight sends is by after lower polaroid, array base palte, liquid crystal layer, color membrane substrates and upper polarizer, and because each several part has absorption, scattering and reflex to light, the transmitance of the light finally sent by display is only 4% ~ 5%.Wherein due to the existence of the black matrix of color membrane substrates, the aperture opening ratio of pixel electrode is reduced, block effect simultaneously due to the black matrix on color membrane substrates, the light that backlight is sent by black matrix, thus cannot reduce the utilization factor of luminous energy.

Summary of the invention

(1) technical matters that will solve

The technical problem to be solved in the present invention is to provide a kind of display device, liquid crystal panel and preparation method thereof, overcomes in existing liquid crystal display color membrane substrates and needs to deposit black matrix to shelter from grid and source electrode, the dark-state light leakage phenomena of drain electrode layer position and the defect such as the complex manufacturing technology caused, the efficiency of light energy utilization be lower.

(2) technical scheme

In order to solve the problem, one aspect of the present invention provides a kind of liquid crystal panel, comprise: color membrane substrates, array base palte, liquid crystal and polaroid, described polaroid is two, described two polaroids are separately positioned on described color membrane substrates and described array base palte, between described two polaroids, be provided with phase compensation film.

Further, described phase compensation film is arranged on described color membrane substrates, and at least relative with the position in light tight region on described array base palte.

Further, described light tight region at least comprises grid, sweep trace, source electrode, drain electrode and data line.

Further, described phase compensation film is biaxial crystal film, and its optical path difference is 250-350nm.

Further, the optical path difference of described phase compensation film is 275nm.

Further, the refraction factor N of described phase compensation film _zvalue be 0.5.

Further, described refraction factor N _zstatement formula be:

$\mathrm{Nz}=\frac{n_x-n_y}{(n_x+n_y)/2-n_z}+0.5;$

Wherein: n _xfor phase compensation film optical index in the X-axis direction; n _yfor phase compensation film optical index in the Y-axis direction; n _zfor phase compensation film optical index in the Z-axis direction.

On the other hand, the present invention also provides a kind of method for making of liquid crystal panel, comprises step:

Step S1, prepare array base palte and color membrane substrates;

Step S2, on described color membrane substrates, prepare phase compensation film;

Step S3, the color membrane substrates of described array base palte and completing steps S2 carried out liquid crystal drip-injection and vacuum to box, and attaching polaroid to the outside of the color membrane substrates after box and array base palte, wherein, described phase compensation film is between described polaroid.

Again on the one hand, the present invention also provides a kind of display device, and it comprises liquid crystal panel.

(3) beneficial effect

Display device provided by the invention, liquid crystal panel and preparation method thereof, adopt phase compensation film can effectively avoid the irregular end official post occurred due to grid and source electrode, drain electrode layer position to obtain liquid crystal to deflect in this position and the dark-state light leakage phenomena that causes, the design of matrix black in color membrane substrates in prior art can replace by the phase compensation film set up, thus simplify color membrane process program, and effectively can improve the aperture opening ratio of pixel electrode and the efficiency of light energy utilization of backlight, farthest reduce luminous energy loss, improve the acceptance rate of product.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention liquid crystal panel color film substrate structure schematic diagram;

Fig. 2 is the process flow diagram of embodiment of the present invention liquid crystal panel method for making.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.

As shown in Figure 1, the liquid crystal panel that the embodiment of the present invention provides comprises: color membrane substrates, array base palte, liquid crystal and polaroid, the quantity of polaroid is two, these two polaroids are separately positioned on color membrane substrates and array base palte, wherein, the setting polaroid be positioned at outside color membrane substrates is upper polaroid, and the polaroid be positioned at outside array base palte is lower polaroid.Phase compensation film 5 is provided with between two polaroids.

The substrate 1 of color membrane substrates have colour element layer 2, protective seam 3, common electrode layer and chock insulator matter 4.This phase compensation film 5 is arranged at the outside of substrate 1 and at least relative with the position in region light tight on array base palte.Wherein, light tight region at least comprises grid, sweep trace, source electrode, drain electrode and data line.Phase compensation film 5 is arranged on backboard 1 and on the position relative with regional location light tight on array base palte, can effectively avoids dark-state light leakage phenomena.

Phase compensation film in the embodiment of the present invention is biaxial crystal film, its optical path difference is 250-350nm, more excellent is 275nm, the numerical value of this optical path difference equals λ/2, and wherein λ is 550nm, is the wavelength of monochromatic light green glow, the green glow of this 550nm is for people's naked eyes, comparatively responsive, can differentiate comparatively intuitively, farthest improve the visual effect of user.

Wherein, the refraction factor N of phase compensation film _zvalue be 0.5.Refraction factor N _zstatement formula be:

$\mathrm{Nz}=\frac{n_x-n_y}{(n_x+n_y)/2-n_z}+0.5;$

Wherein: n _xfor phase compensation film optical index in the X-axis direction; n _yfor phase compensation film optical index in the Y-axis direction; n _zfor phase compensation film optical index in the Z-axis direction.

Because grid and the light tight regional location place such as source electrode, drain electrode layer are deposition convex, it is poor to there is irregular end in its periphery, and therefore, liquid crystal in its vicinity easily deflects and causes light leak.In order to avoid the generation of this dark-state light leak, the phase differential of setting phase compensation film is its optical axis angle is θ.Phase compensation film is attached on the color membrane substrates corresponding with grid and source electrode, drain electrode layer, make the polarization direction of light leak light consistent with the extinction direction of principal axis of upper polarizer, and then light leak light can be sponged, and then effective compensation liquid crystal is at the phase differential of grid and signal wire position, avoids the generation of this position light leakage phenomena.Concrete principle is: the formula of exiting light beam intensity is:

$I=\frac{1}{2}{\sin }^{2}2\mathrm{\ψ}{\sin }^2\frac{\mathrm{\Γ}}{2};$

Wherein, I is exiting light beam intensity; ψ is the deflection angle of liquid crystal in this position, for phase delay, the liquid crystal retardation of this position can be compensated by phase compensation film, make I (Ψ)+I (θ)=0, be i.e. Γ (liquid crystal)+Γ (PR)=0.Wherein, the exiting light beam intensity that I (Ψ) is liquid crystal, the exiting light beam intensity that I (θ) is phase compensation film.

The phase compensation film 5 set up, can the phase differential that produces owing to deflecting at grid and source electrode, drain electrode layer position of effective compensation liquid crystal, and then effectively can avoid light leakage phenomena.Owing to eliminating the design of original black matrix, light normally can penetrate phase compensation film, and the light that polarization occurs will be sponged by upper polaroid, therefore, while avoiding light leak, the efficiency of light energy utilization of backlight farthest can be improved, reduce luminous energy loss, improve the acceptance rate of product.

The present invention also provides a kind of display device, and it comprises the liquid crystal panel in above-described embodiment.

As shown in Figure 2, the method for making of embodiment of the present invention liquid crystal panel has and comprises the steps:

Step S1, prepare array base palte and color membrane substrates.

Be specially: on substrate, deposition of gate, sweep trace, gate insulation layer, active layer, source electrode, drain electrode layer, pixel electrode layer and data line form array base palte; Another substrate deposits colour element layer, protective seam, common electrode layer and chock insulator matter and forms color membrane substrates.

Step S2, on color membrane substrates, prepare phase compensation film.

Phase compensation film is positioned at the outside of color membrane substrates and at least relative with the position in region light tight on array base palte, and this light tight region at least comprises grid, sweep trace, source electrode, drain electrode and data line.

Phase compensation film in the embodiment of the present invention is biaxial crystal film, its optical path difference is 250-350nm, more excellent is 275nm, the numerical value of this optical path difference equals λ/2, and wherein λ is 550nm, is the wavelength of monochromatic light green glow, the green glow of this 550nm is for people's naked eyes, comparatively responsive, can differentiate comparatively intuitively, farthest improve the visual effect of user.

The refraction factor N of phase compensation film _zvalue be 0.5.Wherein, factor N is reflected _zstatement formula be:

$\mathrm{Nz}=\frac{n_x-n_y}{(n_x+n_y)/2-n_z}+0.5;$

Wherein: n _xfor phase compensation film optical index in the X-axis direction; n _yfor phase compensation film optical index in the Y-axis direction; n _zfor phase compensation film optical index in the Z-axis direction.

Step S3, the color membrane substrates of array base palte and completing steps S2 carried out liquid crystal drip-injection and vacuum to box, and polaroid is being attached to the outside of the color membrane substrates after box and array base palte.Wherein, phase compensation film is between these two polaroids.

Display device provided by the invention, liquid crystal panel and preparation method thereof, adopt phase compensation film can effectively avoid the irregular end official post occurred due to grid and source electrode, drain electrode layer position to obtain liquid crystal to deflect in this position and the dark-state light leakage phenomena that causes, the design of matrix black in color membrane substrates in prior art can replace by the phase compensation film set up, thus simplify color membrane process program, and effectively can improve the aperture opening ratio of pixel electrode and the efficiency of light energy utilization of backlight, farthest reduce luminous energy loss, improve the acceptance rate of product.

Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (8)

1. a liquid crystal panel, comprises color membrane substrates, array base palte, liquid crystal and polaroid, and described polaroid is two, and described two polaroids are separately positioned on described color membrane substrates and described array base palte, it is characterized in that,

Between described two polaroids, be provided with phase compensation film, described phase compensation film is arranged at the outside of described color membrane substrates and at least relative with the position in light tight region on described array base palte;

Black matrix is not comprised in described color membrane substrates.

2. liquid crystal panel as claimed in claim 1, it is characterized in that, described light tight region at least comprises grid, sweep trace, source electrode, drain electrode and data line.

3. liquid crystal panel as claimed in claim 1, it is characterized in that, described phase compensation film is biaxial crystal film, and its optical path difference is 250-350nm.

4. liquid crystal panel as claimed in claim 3, it is characterized in that, the optical path difference of described phase compensation film is 275nm.

5. liquid crystal panel as claimed in claim 1, is characterized in that, the refraction factor N of described phase compensation film _zvalue be 0.5.

6. liquid crystal panel as claimed in claim 5, is characterized in that, described refraction factor N _zstatement formula be:

$\mathrm{Nz}=\frac{n_x-n_y}{(n_x+n_y)/2-n_z}+0.5;$

Wherein: n _xfor phase compensation film optical index in the X-axis direction; n _yfor phase compensation film optical index in the Y-axis direction; n _zfor phase compensation film optical index in the Z-axis direction.

7. a method for making for the liquid crystal panel as described in any one of claim 1-6, is characterized in that, comprises step:

Step S1, prepare array base palte and color membrane substrates;

Step S2, on described color membrane substrates, prepare phase compensation film;

Step S3, the color membrane substrates of described array base palte and completing steps S2 carried out liquid crystal drip-injection and vacuum to box, and attaching polaroid to the outside of the color membrane substrates after box and array base palte, wherein, described phase compensation film is between described polaroid.

8. a display device, is characterized in that, comprises the liquid crystal panel as described in any one of claim 1-6.