CN2862083Y

CN2862083Y - Substrate

Info

Publication number: CN2862083Y
Application number: CN 200520067931
Authority: CN
Inventors: 陈弘育
Original assignee: Innolux Shenzhen Co Ltd; Innolux Display Corp
Current assignee: Innolux Shenzhen Co Ltd; Innolux Corp
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2007-01-24
Anticipated expiration: 2015-11-18

Abstract

The utility model discloses a base board, which comprises a plurality of gate lines and data lines. The adjacent two gate lines and the adjacent two data lines form a pixel region. The pixel region includes pixel electrodes and common electrodes, wherein part of the common electrodes in the vicinity of the data lines are provided with at least one electronic connector crossing with the data lines. The LCD device that adopts the base board has improved display quality.

Description

Substrate

[technical field]

The utility model relates to a kind of substrate.

[background technology]

Liquid crystal indicator is a kind of in the flat display apparatus, and it not only is used widely in the notebook field through in decades development, also occupies increasing share in monitor, TV and desktop PC field.

In order to overcome in the prior art the little defective in visual angle in the liquid crystal indicator, many companies all develop relevant wide viewing angle technology, and plane inner switching type liquid crystal displaying apparatus is wherein have much advantage a kind of.

The common planar switching in image type LCD device comprises the two upper and lower substrates that are provided with relatively, is clipped in liquid crystal layer and a plurality of pixel electrodes and the public electrode that are arranged on the infrabasal plate between two substrates.Because pixel electrode and public electrode are arranged on the same substrate, it utilizes the transverse electric field that is parallel to substrate that produces between pixel electrode and public electrode to impel liquid crystal molecule to rotate in same plane, has the advantage of wide viewing angle, high-luminous-efficiency and high-contrast.

Seeing also Fig. 1, is a kind of prior art plane inner switching type liquid crystal displaying apparatus infrabasal plate one pixel region structural representation.This pixel region 10 is surrounded by two adjacent gate lines 11 and two adjacent data lines 12, this pixel region 10 also comprises a public electrode 13, a pixel electrode 14 and a thin film transistor (TFT) 15, drive signal voltage transmission in the gate line 11 to the grid 16 of thin film transistor (TFT) 15 to control this thin film transistor (TFT) 15 switches, when thin film transistor (TFT) 15 conductings, signal voltage in the data line 12 transfers to the source electrode 17 of thin film transistor (TFT) 15, and the drain electrode 18 by thin film transistor (TFT) 15 transfers to pixel electrode 14 with signal voltage again.This public electrode 13 has a horizontal stripe 13a and many

vertical bar

13b, 13c, 13d that are parallel to data line 12 that are parallel to gate line 11, this pixel electrode 14 comprises that also one is parallel to horizontal stripe 14a and many vertical bar 14b, 14c that are parallel to data line 12 of gate line 11, and vertical bar 14b, the 14c of vertical bar 13b, the 13c of public electrode 13,13d and pixel electrode 14 are arranged in a crossed manner mutually.

Because during these pixel region 10 work, all has magnitude of voltage among vertical bar 14b, the 14c of data line 12 and pixel electrode 14, and this magnitude of voltage does not stop to change in the course of the work, therefore form stray capacitance between vertical bar 14b, the 14c of data line 12 and pixel electrode 14, voltage among vertical bar 14b, the 14c of data line 12 and pixel electrode 14 interacts, cause crosstalk phenomenon, influence the display quality of this liquid crystal indicator greatly.

Seeing also Fig. 2, is the infrabasal plate one pixel region structural representation of another kind of plane inner switching type liquid crystal displaying apparatus.This pixel region 20 all is arranged on vertical bar 23b, the 23c of public electrode 23 on the data line 22, because the voltage in the public electrode 23 generally should be a fixed value, therefore 22 of public electrode 23 and data lines form an electric field shielding, then reduce the stray capacitance size between vertical bar 24b, the 24c of data line 22 and pixel electrode 24 effectively, reduce crosstalk phenomenon, improve the display quality of liquid crystal indicator.

But, because vertical bar 23b, the 23c of whole public electrode 23 are arranged on the data line 22, it utilizes insulating material that

vertical bar

23b, 23c and the data line 22 of public electrode 23 are separated, because public electrode 23 covers on the

data line

22,22 of public electrode 23 and data lines easily form electric leakage, and because the area on the public electrode 23 cover data lines 22 is bigger, therefore the stray capacitance of

public electrode

23 and 22 formation of data line is bigger, cause data line 22 signal voltage delay phenomenons, thereby influence display quality.

[utility model content]

For overcoming the relatively poor defective of prior art display quality, be necessary to provide the substrate of the preferable liquid crystal indicator of a kind of display quality.

A kind of substrate, it comprises many gate lines and data line, two adjacent gate lines and two adjacent data lines surround a pixel region, this pixel region comprises pixel electrode and public electrode, wherein, between the part public electrode of data line vicinity, has the thing that is electrically connected that at least one and data line intersect.

Compared with prior art, owing to have the thing that is electrically connected that at least one and data line intersect between the part public electrode of data line vicinity, then form an electric field shielding between public electrode and data line, can effectively reduce the stray capacitance between data line and pixel electrode, reduce crosstalk phenomenon.And because lap only is electrically connected thing for what intersect with data line between public electrode and data line, be that its overlapping area is less, therefore can reduce the leaky between public electrode and data line, and the parasitic capacitance value that produces between public electrode and data line is less, can improve data line signal voltage delay phenomenon.

[description of drawings]

Fig. 1 is a kind of prior art liquid crystal indicator one pixel region synoptic diagram.

Fig. 2 is another kind of prior art liquid crystal indicator one pixel region structural representation.

Fig. 3 is the utility model first embodiment liquid crystal indicator structural representation.

Fig. 4 is liquid crystal indicator one a pixel region structural representation shown in Figure 3.

Fig. 5 is the part-structure schematic perspective view of a pixel region of liquid crystal indicator shown in Figure 3.

Fig. 6 is the liquid crystal indicator one pixel region structural representation of the utility model second embodiment.

Fig. 7 is the part-structure schematic perspective view of a pixel region of the liquid crystal indicator of the utility model the 3rd embodiment.

Fig. 8 is the liquid crystal indicator one pixel region structural representation of the utility model the 4th embodiment.

Fig. 9 is the liquid crystal indicator one pixel region structural representation of the utility model the 5th embodiment.

[embodiment]

See also Fig. 3, be that the utility model first embodiment provides a kind of liquid crystal indicator 100, it comprises: a upper substrate 110, one infrabasal plate 120 that is oppositely arranged with upper substrate 110, one liquid crystal layer 130, it is arranged between the two substrates, many gate lines 140 and data line 150 are set on this infrabasal plate 120, wherein, two adjacent gate lines 140 and two adjacent data lines 150 surround a pixel region, 150 of this gate line 140 and data lines utilize insulating material as passivation layer 160 its electricity to be isolated, and cover the orientation of a both alignment layers 170 with liquid crystal molecule in the control liquid crystal layer 130 on data line 150.

Seeing also Fig. 4, is the structural representation of a pixel region 180 of this liquid crystal indicator 100.This pixel region 180 is surrounded by two adjacent gate lines 140 and two adjacent data lines 150, this pixel region also comprises a public electrode 181, one pixel electrode 182 and a thin film transistor (TFT) 190, the grid 191 of this thin film transistor (TFT) 190 is connected to gate line 140, control the electric switch of this thin film transistor (TFT) 190 by the drive voltage signal in the gate line 140, the source electrode 192 of this thin film transistor (TFT) 190 is connected to data line 150, drain electrode 193 is connected to pixel electrode 182, when thin film transistor (TFT) 190 conductings, the signal voltage in the data line 150 transfers to pixel electrode 182 by thin film transistor (TFT) 190.This public electrode 181 has a horizontal stripe 1810 and many vertical bars 1811 that are parallel to data line 150 that are parallel to

gate line

140,1812,1813,1814,1815, this pixel electrode 182 also has a horizontal stripe 1820 and many vertical bars 1821 that are parallel to data line 150 that are parallel to

gate line

140,1822, the

vertical bar

1811 and 1812 of this public electrode 181 is arranged near the data line 150, and vertical bar 1811 is connected with the horizontal stripe 1816 that 1812 utilizations and data line 150 intersect, equally,

vertical bar

1814 and 1815 is arranged near another data line 150, and utilizes horizontal stripe 1817 with its electrical connection therebetween.

Seeing also Fig. 5, is the part-structure schematic perspective view of a pixel region 180 of liquid crystal indicator as shown in Figure 3.The

vertical bar

1811 and 1812 of this public electrode 181 all is positioned near the data line 150, data line 150 is arranged on the

public electrode

181, and 150 of public electrode 181 and data lines utilize insulation course (figure do not show) that its electricity is isolated, this public electrode 181 have one with the overlapping horizontal stripe 1816 of data line part.

Because the vertical bar 1811 of

public electrode

181 and 1812 utilizes the horizontal stripe 1816 that is positioned on the data line 150 with its electrical connection, therefore, the vertical bar 1811 of

public electrode

181 and 1812 and 150 of data lines form an electric field shielding, can reduce the stray capacitance of 1821 of the vertical bars of data line 150 and pixel electrode 182 effectively, prove by experiment, this kind structure can reduce

data line

150 and 182 parasitic capacitance values of pixel electrode reach 80%, and the crosstalk phenomenon that can effectively reduce by 182 of data line 150 and pixel electrodes takes place.And because public electrode 181 only has a horizontal stripe 1816 with data line 150 overlapped zones, therefore 150 of public electrode 181 and data lines produce the probability reduction of electric leakage, the parasitic capacitance value of

public electrode

181 and 150 generations of data line reduces, and can greatly improve signal delay phenomenon in the data line 150.And experimental results show that, this kind liquid crystal indicator 100 its upper substrates 110 can reduce with its electric field difference of infrabasal plate 120 positions, liquid crystal layer from top to bottom its electric field intensity standard deviation compared with prior art can reduce by 70%, improves the display quality of entire liquid crystal display device 100.

Seeing also Fig. 6, is liquid crystal indicator one pixel region 280 structural representations that the utility model second embodiment provides.Compare with the liquid crystal indicator pixel region 180 that first embodiment provides, the public electrode 281 of this pixel region 280 has many vertical bars 2811 and 2812 of horizontal stripe 2813,2814,2815 and 2816 to be electrically connected public electrode 281 that intersect with data line 250.In like manner, 281 of data line 250 and public electrodes form an electric field shielding, stray capacitance with 2821 of the vertical bars that reduce data line 250 and pixel electrode 282, can effectively reduce crosstalk phenomenon and take place, 250 leakies generations of reduction public electrode 281 and data line and the signal voltage that improves on the data line 250 postpone.This horizontal stripe 2813,2814,2815 and 2816 quantity can be regulated according to panel size size and data line signal load capacity.Correspondingly between near the public electrode another data line be provided with many and be electrically connected things.

Seeing also Fig. 7, is the liquid crystal indicator one pixel region part-structure exploded perspective view of the utility model the 3rd embodiment.This pixel region is on the basis of pixel region shown in Figure 5, on public electrode 381 and data line 350, cover one deck public electrode 382 again, this public electrode 382 can be identical with public electrode 381 structures, also can adopt different structures, and 350 of 350 of public electrode 382 and data lines and public electrode 381 and data lines all have a layer insulating (figure does not show), public electrode 381 and 382 of public electrodes utilize a contact hole 320 that connects each layer that it is electrically connected, so that public electrode 381 is identical with current potential on the public electrode 382.Its effect of electric field shielding that this structure forms is better.And public electrode 382 can adopt the electrically conducting transparent material, as tin oxide, zinc paste material, then this public electrode 382 can be in the liquid crystal indicator processing procedure, its light shield etching oxidation tin, zinc paste material are with as in the pixel electrode step, make public electrode 382 simultaneously, and do not need extra light shield etching step, thereby increase the step of processing procedure.

Seeing also Fig. 8, is the liquid crystal indicator one pixel region part-structure schematic perspective view of the utility model the 4th embodiment.Compare with liquid crystal indicator one pixel region 180 of first embodiment, the vertical bar 4811 of liquid crystal indicator one pixel region 480 its public electrodes of this embodiment adopts the bending structure, data line 450 adopts the bending structure accordingly, and its pixel electrode also adopts the bending structure accordingly.

Seeing also Fig. 9, is the liquid crystal indicator one pixel region part-structure schematic perspective view of the utility model the 5th embodiment.Compare with liquid crystal indicator one pixel region 180 of first embodiment, the vertical bar 5811 of liquid crystal indicator one pixel region 580 its public electrodes of this embodiment adopts the curve-like structure, data line 550 adopts the curve-like structure accordingly, and its pixel electrode also adopts the curve-like structure accordingly.

Claims

1. substrate, it comprises many gate lines and data line, two adjacent gate lines and two adjacent data lines surround a pixel region, this pixel region comprises pixel electrode and public electrode, it is characterized in that: have the thing that is electrically connected that at least one and data line intersect between the part public electrode of data line vicinity.

2. substrate as claimed in claim 1 is characterized in that: this electrical connection thing is a horizontal stripe that intersects with data line.

3. substrate as claimed in claim 2 is characterized in that: an insulation course is set between this public electrode and data line.

4. substrate as claimed in claim 1 is characterized in that: this pixel region further comprises another public electrode, and it has with data line intersects and is electrically connected thing.

5. substrate as claimed in claim 4 is characterized in that: this public electrode and former public electrode that further is provided with lays respectively at the data line both sides.

6. substrate as claimed in claim 4 is characterized in that: utilize contact hole to be electrically connected between this public electrode that further is provided with and former public electrode.

7. substrate as claimed in claim 1 is characterized in that: this public electrode has a horizontal stripe and many vertical bars that are parallel to data line that are parallel to gate line.

8. substrate as claimed in claim 7 is characterized in that: the vertical bar of this public electrode partly becomes vertical bar shape or bending or curve-like.

9. as claim 7 or 8 described substrates, it is characterized in that: this electrical connection thing connects the two adjacent vertical bars that are positioned at the data line vicinity.

10. substrate as claimed in claim 1 is characterized in that: this pixel electrode has a horizontal stripe and many vertical bars that are parallel to data line that are parallel to gate line.