CN202256967U

CN202256967U - Transfer printing board

Info

Publication number: CN202256967U
Application number: CN201120329159XU
Authority: CN
Inventors: 邵勇; 李辉; 赵承潭
Original assignee: Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2012-05-30
Anticipated expiration: 2021-09-02

Abstract

The utility model discloses a transfer printing board. Inner mesh points are distributed inside an area on a basic pad, which corresponds to a liquid crystal display area, outer mesh points are distributed outside an area on a basic pad, which corresponds to the liquid crystal display area, and the thickness of the basic pad of the distribution area of the inner mesh points is smaller than the thickness of the basic pad of the distribution area of the outer mesh points. In this way, the oriented dose adsorbed by the area in which the outer mesh points of the transfer printing board are arranged is relatively smaller than the oriented dose adsorbed by the area in which the inner mesh points are arranged. When an orientation agent is printed onto a glass substrate by the transfer printing board, an oriented film with relatively uniform thickness can be formed, a convex Halo area cannot occur at the oriented film at the position of the outer edge of the liquid crystal display area, and the normal orientation of liquid crystals on an entire panel can be ensured, so that the display quality of a liquid crystal panel is enhanced.

Description

A kind of transfer printing version

Technical field

The utility model relates to the liquid crystal module field, relates in particular to a kind of transfer printing version.

Background technology

In the manufacture craft of TFT liquid crystal panel TFT-LCD; Necessary tin indium oxide (ITO in liquid crystal cell earlier; Indium-Tin Oxide) (for example: polyimide (PI applies one deck alignment agent on the glass substrate; Polyimide)) form uniform alignment films, coating liquid crystal molecule is above that arranged along certain direction, thereby obtain uniform brightness, high contrast and the liquid crystal display of response time fast.

Wherein, The process that on glass substrate, forms the PI alignment films is as shown in Figure 1; At first PI liquid 1 is added drop-wise to the contact position of anilox roller 3 (Anilox Roll) and scraper 4 (Blade Roll) through nozzle 2 (Dispenser); Then 1 coating of the PI liquid on the anilox roller 3 evenly with scraper 4; Anilox roller 3 contacts with the version trunk 6 that hangs with the transfer printing version 5 that is pre-formed figure then, and PI liquid 1 is transferred on the transfer printing version 5, forms the PI alignment films to the surface that PI liquid 1 is printed onto the glass substrate 8 on the base station 7 through transfer printing version 5 at last.Wherein, the structure of transfer printing version 5 is as shown in Figure 2, and the transfer printing version is even with density by the uniform base wad 9 of thickness, the identical a plurality of sites 10 of size are formed, and the amount of the PI liquid 1 of absorption is identical between each site 10.

In actual production operation, because transfer printing impact transfer printing technology, PI liquid 1 is being printed onto 8 last times of glass substrate; PI liquid 1 can toward print direction flow and to around diffusion, be printed to around the viewing area on the glass substrate 8 when making the PI liquid 1 at transfer printing version edge be in hypersaturated state, cause the edge of PI alignment films of formation blocked up; Promptly produce the ring of light (Halo) district; Thereby the PI alignment films that causes forming is in uneven thickness, as shown in Figure 3, and PI alignment films 11 boss on glass substrate 8 are Halo district 12; Fig. 4 is the vertical view with the liquid crystal panel in Halo district 12, and wherein liquid crystal display area is 13.If Halo district 12 in the viewing area of liquid crystal panel, occurs, because can not normal orientation at the liquid crystal in Halo district, can cause the image quality of liquid crystal panel to be affected.In addition; If Halo district 12 appears in outer edge in the viewing area of liquid crystal panel; Because the thickness of the PI alignment films in Halo district is bigger than the thickness of viewing area, adverse consequences such as also can cause that the cel-gap increase causes that foreign matter is sneaked into has a strong impact on the display quality of liquid crystal panel.

The utility model content

The utility model embodiment provides a kind of transfer printing version, causes the problem that alignment films is in uneven thickness, the liquid crystal panel display quality is bad that prints out in order to solve existing transfer printing plate structure.

The utility model embodiment provides a kind of transfer printing version, comprising: base wad and be positioned at site, inside and the outside site on the base wad; Wherein,

Inner site is distributed within the zone corresponding with liquid crystal display area on the base wad, and outside site is distributed in outside the zone corresponding with liquid crystal display area on the base wad;

The base wad thickness of distributed areas, inner site is less than the base wad thickness of distributed areas, outside site.

The beneficial effect of the utility model embodiment comprises:

A kind of transfer printing version that the utility model embodiment provides; Inner site is distributed within the zone corresponding with liquid crystal display area on the base wad; Outside site is distributed in outside the zone corresponding with liquid crystal display area on the base wad, and the base wad thickness of distributed areas, inner site is less than the base wad thickness of distributed areas, outside site, like this; Make the orientation dosage of region, outside site absorption of transfer printing version relatively less than the orientation dosage of region, inner site absorption; When the agent of transfer printing version printing direction-orienting is to glass substrate, can form thickness alignment films relatively uniformly, can not make the Halo district that occurs protrusion in the alignment films of liquid crystal display area outer edge; Guarantee that on whole panel liquid crystal can both normal orientation, thereby improved the display quality of liquid crystal panel.

Description of drawings

Fig. 1 is the synoptic diagram that on glass substrate, forms PI alignment films process in the prior art;

Fig. 2 is the structural representation of prior art transfer forme;

Fig. 3 is the synoptic diagram of the alignment films that on glass substrate, forms in the prior art;

Fig. 4 is the vertical view in the film formed Halo of orientation district in the prior art;

The side view of the transfer printing version that Fig. 5 provides for the utility model embodiment;

The transfer printing version that Fig. 6 provides for the utility model embodiment is adsorbed the synoptic diagram behind the alignment agent;

The synoptic diagram of the alignment films that on glass substrate, forms that Fig. 7 provides for the utility model embodiment;

The vertical view of the alignment films of the formation that Fig. 8 provides for the utility model embodiment;

The upward view of the transfer printing version that Fig. 9 provides for the utility model embodiment;

Figure 10 is the enlarged drawing of Fig. 9 circular dashed line part.

Embodiment

Below in conjunction with accompanying drawing, the embodiment of the transfer printing version that the utility model embodiment is provided is at length explained.

The transfer printing version that the utility model embodiment provides, as shown in Figure 5, specifically comprise: base wad 14, and be positioned at the site, inside 15 and outside site 16 on the base wad 14; Wherein,

Inner site 15 is distributed within the zone corresponding with liquid crystal display area on the base wad 14, and outside site 16 is distributed in outside the zone corresponding with liquid crystal display area on the base wad 14;

The base wad 14 thickness b of 15 distributed areas, inner site are less than the base wad 14 thickness a of 16 distributed areas, outside site.

Preferably, as shown in Figure 5 in the transfer printing version that the utility model embodiment provides, the height of inner site 15 is greater than the height of outside site 16.

Preferably; In the transfer printing version that the utility model embodiment provides; As shown in Figure 5, the base wad 14 thickness b sums of the height of

inner site

15 and 15 distributed areas, inner site equal the height of outside site 16 and the base wad 14 thickness a sums of 16 distributed areas, outside site (being that the whole thickness of transfer printing version is even).

Preferably, as shown in Figure 5 in the transfer printing version that the utility model embodiment provides, inner site 15 and outside site 16 distribution density homogeneous on base wad 14.

As shown in Figure 6, when the transfer printing version of using the utility model embodiment to provide is printed alignment agent, because the base wad 14 thickness a of 16 distributed areas, outside site are greater than the base wad 14 thickness b of 15 distributed areas, inner site; And the thickness of transfer printing version integral body is even; Relatively, externally the orientation dosage of 16 regions, site absorption can be less than the orientation dosage of 15 regions, inner site absorption, like this; When being transferred to alignment agent on the glass substrate; Alignment agent to print direction flow and to around after the diffusion because the orientation dosage that carry outside site 16 is less, can not make alignment films form the Halo district in the liquid crystal display area outer edge; Guarantee that on whole panel liquid crystal can both normal orientation, thereby improved the display quality of liquid crystal panel.

In addition; In the process of the transfer printing version printing direction-orienting agent of using the utility model embodiment to provide; Even after transfer printing version end applies strong coating pressure, as shown in Figure 7, the thickness of the alignment films 17 that prints out on whole glass substrate 14 also all is uniform relatively; The Halo district that can not occur protruding (Fig. 8 is the vertical view of the alignment films of formation, does not form the Halo district of protrusion in liquid crystal display area 13 outer edge).

Fig. 9 is the upward view of the transfer printing version that provides of the utility model embodiment, and wherein, the site in the liquid crystal display area that dashed rectangle marks is inner site 15, and the site between the outer and solid line boxes of dashed rectangle is outside site 16.

Preferably; The base wad thickness of distributed areas, inner site is 0.2mm-0.4mm in the transfer printing version that the utility model embodiment provides; The base wad thickness of distributed areas, outside site is 0.5mm-1.5mm, and the base wad thickness sum of the height of inner site and distributed areas, inner site (being the whole thickness of transfer printing version) is 2.85mm.More preferably, the base wad thickness of distributed areas, inner site is 0.25mm, and the base wad thickness of distributed areas, outside site is 1mm.

The site, inside of the transfer printing version that the utility model embodiment provides is identical with the shape of outside site.

For example shown in Figure 10 (being the enlarged drawing of circular dashed line part among Fig. 9), inner site and outside site are circular shaped lattice point (being that inner site or outside site and glass substrate surface of contact are for circular), and circular diameter D is 42 μ m; Spacing P between two adjacent inner sites is 62 μ m.

Because inner site and outside site distribution density homogeneous, therefore, spacing, the spacing between any two adjacent external sites and the spacing between any two adjacent inner sites between adjacent inner site and the outside site is all identical arbitrarily, is 62 μ m.

The transfer printing version that the utility model embodiment provides is that circle is the example explanation with outside site and inner site and glass substrate surface of contact; In fact; Be not limited to the circle that the utility model embodiment provides; Also can be arbitrary shape well known to those skilled in the art, for example can be square and rhombus.

Preferably; The base wad width of distributed areas, outside site is 1mm-6mm; Can guarantee that like this alignment agent total amount of carrying region, outside site is moderate, neither can make the alignment agent of alignment films edge too much, cause producing the Halo district of protrusion in the alignment films edge that forms; Can not make the alignment agent of alignment films edge very few yet, cause at the alignment films edge that forms thin excessively.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.

Claims

1. a transfer printing version is characterized in that, comprising: base wad and be positioned at site, inside and the outside site on the said base wad; Wherein,

Said inner site is distributed within the zone corresponding with liquid crystal display area on the said base wad, and said outside site is distributed in outside the zone corresponding with liquid crystal display area on the said base wad;

The base wad thickness of distributed areas, said inner site is less than the base wad thickness of distributed areas, said outside site.

2. transfer printing version as claimed in claim 1 is characterized in that the height of said inner site is greater than the height of said outside site.

3. transfer printing version as claimed in claim 1 is characterized in that, the base wad thickness sum of the height of said inner site and distributed areas, said inner site equals the height of said outside site and the base wad thickness sum of distributed areas, said outside site.

4. transfer printing version as claimed in claim 1 is characterized in that, said inner site and the said outside site distribution density homogeneous on said base wad.

5. transfer printing version as claimed in claim 4 is characterized in that, the spacing between adjacent said inner site and/or the said outside site is 62 μ m.

6. transfer printing version as claimed in claim 1 is characterized in that, the span of the base wad thickness of distributed areas, said inner site is 0.2mm-0.4mm, and the span of the base wad thickness of distributed areas, said outside site is 0.5mm-1.5mm.

7. like each described transfer printing version of claim 1-6, it is characterized in that the shape of said inner site and said outside site is identical.

8. transfer printing version as claimed in claim 7 is characterized in that, said inner site and said outside site are circular shaped lattice point.

9. transfer printing version as claimed in claim 8 is characterized in that, the diameter of said inner site and outside site and substrate contacts face all is 42 μ m.

10. like each described transfer printing version of claim 1-6, it is characterized in that the base wad width of distributed areas, said outside site is 1mm-6mm.