CN101728400B

CN101728400B - Pixel structure

Info

Publication number: CN101728400B
Application number: CN2008102012135A
Authority: CN
Inventors: 何宣仪; 何建国
Original assignee: CPT Video Wujiang Co Ltd; Chunghwa Picture Tubes Ltd
Current assignee: Wujiang Fenhu Technology Entrepreneurship Service Co ltd
Priority date: 2008-10-15
Filing date: 2008-10-15
Publication date: 2011-12-21
Anticipated expiration: 2028-10-15
Also published as: CN101728400A

Abstract

The invention relates to a pixel structure, which comprises a substrate, a scanning line, a patterned shared wiring, an active component, a data wire, a protective layer and a pixel electrode. The scanning line, the patterned shared wiring and the active component are arranged on the substrate; and the active component is provided with an insulating layer extending outwards to cover the scanning line and the patterned shared wiring. In addition, the patterned shared wiring is at least provided with a first side edge and a second side edge, and the extending direction of the first side edge forms a first angle with that of the second side edge. Moreover, the data wire is arranged on the insulating layer, and the active component is electrically connected with the scanning line and the data wire. In the pixel structure, the protective layer covers the active component; and the pixel electrode is arranged on the protective layer and electrically connected with the active component.

Description

Dot structure

Technical field

The invention relates to a kind of dot structure, and particularly relevant for the design of shared wiring in a kind of dot structure.

Background technology

Social now multimedia technology is quite flourishing, is indebted to the progress of semiconductor subassembly and display unit mostly.With regard to display, have that high image quality, space utilization efficient are good, (Thin film transistor liquid crystal display TFT-LCD) becomes the main flow in market to the Thin Film Transistor-LCD of low consumpting power, advantageous characteristic such as radiationless gradually.Generally speaking, Thin Film Transistor-LCD is made of an active assembly array base plate, a colored optical filtering substrates and the liquid crystal layer that is sandwiched between the two.Wherein, active assembly array base plate can have a plurality of dot structures.

Fig. 1 is the top view of known pixel structure.Please refer to Fig. 1, known pixel structure 100 comprises a substrate 110, one scan line 120, a data wire 130, one shared distribution 140, a thin-film transistor 150 and a pixel electrode 160.Wherein, the thin-film transistor 150 that is positioned on the substrate 110 can electrically connect with scan line 120 and data wire 130.On the practice, the switch signal can see through the transmission of scan line 120 and thin-film transistor 150 is opened.After thin-film transistor 150 was opened, display signal can see through data wire 130 and be passed in the pixel electrode 160 that electrically connects with thin-film transistor 150.

It should be noted that being positioned at the other regional A of shared wiring 140 is easy to that (Rubbing) is bad a light leakage phenomena because of grinding.In detail, shared wiring 140 can make the rete that is covered in its top comparatively protrude, and the grinding direction R of the bearing of trend of shared wiring 140 and alignment manufacture process has suitable difference.Thus, the bristle of using when orientation (not illustrating) is when grinding direction R and grind, and the bristle that orientation is used also is difficult for effectively regional A being ground, and therefore regional A is easy to grind bad problem.This can cause known dot structure 100 can produce the problem of light leak and contrast reduction, and improved necessity is arranged in fact.

Summary of the invention

In view of this, the invention provides a kind of dot structure, it can effectively improve the light leak problem and can have good contrast.

The present invention proposes a kind of dot structure, and it comprises a substrate, one scan line, a patterned shared wiring, a driving component, a data wire, a protective layer and a pixel electrode.Scan line, patterned shared wiring and driving component all are disposed on the substrate.Wherein, driving component has an insulating layer extending outwards, to cover scan line and patterned shared wiring.In addition, patterned shared wiring has a first side and a second side at least.The bearing of trend of first side and the bearing of trend of second side press from both sides one first angle.In addition, data wire is disposed on the insulating barrier, and driving component electrically connects scan line and data wire.Protective layer of the present invention covers driving component.Above-mentioned pixel electrode is disposed on the protective layer, and electrically connects with driving component.

In one embodiment of this invention, the first above-mentioned angle is between 15 degree～60 degree.

In one embodiment of this invention, above-mentioned patterned shared wiring more comprises two branches, is connected to the two ends of patterned shared wiring, to present H shape.

In one embodiment of this invention, above-mentioned patterned shared wiring more comprises a branch, and an end of this branch is connected to an end of patterned shared wiring, and is anti-L shaped to present.

In one embodiment of this invention, above-mentioned scan line has one the 3rd side and a four side, and the bearing of trend of the 3rd side and the bearing of trend of four side press from both sides one second angle.

In one embodiment of this invention, above-mentioned dot structure, wherein second angle is between degree 15～60 degree.

The first side of patterned shared wiring of the present invention and the bearing of trend of second side can press from both sides one first angle.By changing formed first angle, excessive with bearing of trend and grinding (Rubbing) the direction difference of avoiding patterned shared wiring, and then can improve the bad problem of orientation.In addition, the 3rd side and the four side of scan line also can form one second angle, with the further bad problem of orientation of improving.Therefore, dot structure of the present invention can effectively improve the light leakage phenomena that produces because of orientation is bad, and then good contrast can be arranged.

Description of drawings

Fig. 1 is the top view of known pixel structure;

Fig. 2 A is the dot structure schematic diagram of first embodiment of the invention;

Fig. 2 B is along the generalized section of I-I ' hatching among Fig. 2 A;

Fig. 3 is the dot structure schematic diagram of second embodiment of the invention;

Fig. 4 is the dot structure schematic diagram of second embodiment of the invention.

For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.

Embodiment

First embodiment

Fig. 2 A is the dot structure schematic diagram of first embodiment of the invention, and Fig. 2 B is along the generalized section of I-I ' hatching among Fig. 2 A.For graphic simple and clear, omitted illustrating of protective layer and insulating barrier among Fig. 2 A, and protective layer and insulating barrier can be known and see among Fig. 2 B.Please also refer to Fig. 2 A and Fig. 2 B, dot structure 200 of the present invention comprises a substrate 210, one scan line 220, a data wire 230, a patterned shared wiring 240, a driving component 250, a protective layer 260 and a pixel electrode 270.In detail, the driving component shown in Fig. 2 B 250 can comprise a grid 250g, an insulating barrier 252, a channel layer 250c, an ohmic contact layer 250m, one source pole 250s and a drain electrode 250d.Grid 250g is disposed on the substrate 210, and this grid 250g can be the part of scan line 220 among Fig. 2 A.Certainly, have in the affiliated technical field and know that usually the knowledgeable should know that grid 250g also can be that the parts that scan line 220 outwards protrudes form, and does not only illustrate at this and painstakingly limits to.

In addition, insulating barrier 252 can cover the scan line 220 and patterned shared wiring 240 that is disposed among this grid 250g and Fig. 2 A on the substrate 210.In order to reduce the contact impedance between metal material and the semi-conducting material, ohmic contact layer 250m can be disposed between source electrode 250s and the channel layer 250c, and between drain electrode 250d and the channel layer 250c.Here be noted that the driving component 250 shown in Fig. 2 B is the thin-film transistor of bottom-gate (Bottom gate) structure, certainly driving component 250 also can be that two-carrier transistor or other have the driving component 250 of three terminals, in this painstakingly restriction.

In addition, protective layer 260 can cover this driving component 250.Wherein, protective layer 260 has a contact window (Contact window) C.The pixel electrode 270 that is positioned on the protective layer 260 can see through contact window C, and electrically connects with the drain electrode 250d of driving component 250.The rete of it should be noted that patterned shared wiring 240, pixel electrode 270 and being sandwiched between the two can constitute a storage capacitors Cst.On the practice, the switch signal can see through the transmission of scan line 220 and driving component 250 is opened.After driving component 250 was opened, display signal can see through data wire 230 in regular turn, source electrode 250s is passed in the pixel electrode 270 with drain electrode 250d.In addition, dot structure 200 can pass through the auxiliary of its storage capacitors Cst, and keeps normal Presentation Function.

Specifically, the patterned shared wiring shown in Fig. 2 A 240 has a first side 240a and a second side 240b at least.The bearing of trend of the bearing of trend of first side 240a and second side 240b can press from both sides one first angle θ 1.In one embodiment, the first above-mentioned angle θ 1 can be between 15 degree～60 degree.Thus, the present invention can just can effectively dwindle the bearing of trend and the difference of grinding direction R of second side 240b, so that orientation bristle (not illustrating) can carry out orientation to area B effectively by changing the first angle θ 1.Therefore, patterned shared wiring 240 other area B just do not have the light leakage phenomena that produces because of orientation is bad, and then can make dot structure 200 that good contrast can be arranged.In one embodiment, the bearing of trend of second side 240b also can be by adjusting the first angle θ 1, and with to grind direction R in full accord.In order further to improve the bad problem of orientation, scan line 220 of the present invention has one the 3rd a side 220a and a four side 220b.The bearing of trend of the 3rd side 220a and the bearing of trend of four side 220b press from both sides one second angle θ 2.In one embodiment, this second angle θ 2 can be between 15 degree～60 degree.

What deserves to be mentioned is, under the constant situation of aperture opening ratio (Aperture ratio), the area of patterned shared wiring 240 can suitably increase by increasing by the first angle θ 1 between first side 240a and the second side 240b, and the area of scan line 220 can reduce relatively.Thus, just the storage capacitors value shown in Fig. 2 B can effectively promote, and then improve the display quality of dot structure 200 of the present invention.

Second embodiment

Second embodiment and first embodiment are similar, and something in common repeats no more.Both are the main difference part: the layout of patterned shared wiring (Layout).Fig. 3 is the dot structure schematic diagram of second embodiment of the invention.Please refer to Fig. 3, patterned shared wiring 240 more comprises two branches 242,244 in the dot structure 300 of present embodiment.The two ends that branch 242,244 can be connected to patterned shared wiring 240 to be presenting H shape, and then can effectively improve the storage capacitors of dot structure 300.

The 3rd embodiment

Fig. 4 is the dot structure schematic diagram of second embodiment of the invention.Please refer to Fig. 4, the dot structure 400 of present embodiment comprises a substrate 410, one scan line 420, a data wire 430, a patterned shared wiring 440, a driving component 450 and a pixel electrode 470 at least.Wherein, scan line 420 can electrically connect with the driving component 450 that is positioned on the substrate 410 with data wire 430, and driving component 450 can electrically connect through contact window C ' and with pixel electrode 270.

Specifically, the layout of patterned shared wiring 440 also can be as shown in Figure 4.Patterned shared wiring 440 has a first side 440a and a second side 440b at least, and the bearing of trend of the bearing of trend of first side 440a and second side 440b can press from both sides one first angle θ 1.In one embodiment, the first above-mentioned angle θ 1 can be between 15 degree～60 degree.Thus, by changing the first angle θ 1, just can effectively dwindle the bearing of trend and the difference of grinding direction R of second side 440b, and then effectively improve the bad problem of orientation.In addition, patterned shared wiring 440 more can comprise a branch 446.One end of this branch 446 is connected in an end of patterned shared wiring 440, and is anti-L shaped to present.This can improve the storage capacitors of dot structure 400 equally.

In sum, the bearing of trend of the first side of patterned shared wiring of the present invention and second side can press from both sides first angle.By changing formed first angle, excessive with the bearing of trend of avoiding patterned shared wiring with the direction difference of grinding processing procedure, and then improve the bad problem of orientation.In addition, the 3rd side and the four side of scan line also can form second angle, with the further bad problem of orientation of improving.Dot structure of the present invention can effectively improve the light leakage phenomena that produces because of orientation is bad, and then good contrast can be arranged.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.

Claims

1. dot structure comprises:

One substrate;

The one scan line is disposed on this substrate;

One patterned shared wiring is disposed on this substrate, and wherein this patterned shared wiring has a first side and a second side at least, and the bearing of trend of this first side and the bearing of trend of this second side press from both sides one first angle; Wherein this first angle is between 15 degree～60 degree;

One driving component is disposed on this substrate, and this driving component has an insulating layer extending outwards, to cover this scan line and this patterned shared wiring;

One data wire is disposed on this insulating barrier, and wherein this driving component electrically connects this scan line and this data wire;

One protective layer covers this driving component; And

One pixel electrode is disposed on this protective layer, and electrically connects with this driving component.

2. dot structure as claimed in claim 1, wherein this patterned shared wiring more comprises two branches, is connected to the two ends of this patterned shared wiring, to present H shape.

3. dot structure as claimed in claim 1, wherein this patterned shared wiring more comprises a branch, an end of this branch is connected to an end of this patterned shared wiring, and is anti-L shaped to present.

4. dot structure as claimed in claim 1, wherein this scan line has one the 3rd side and a four side, and the bearing of trend of the 3rd side and the bearing of trend of this four side press from both sides one second angle.

5. dot structure as claimed in claim 4, wherein this second angle is between 15 degree～60 degree.