CN102722058B - Liquid crystal array substrate, manufacturing method and repair method of liquid crystal array substrate - Google Patents
Liquid crystal array substrate, manufacturing method and repair method of liquid crystal array substrate Download PDFInfo
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- CN102722058B CN102722058B CN201210199070.5A CN201210199070A CN102722058B CN 102722058 B CN102722058 B CN 102722058B CN 201210199070 A CN201210199070 A CN 201210199070A CN 102722058 B CN102722058 B CN 102722058B
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- 239000000758 substrate Substances 0.000 title claims abstract description 42
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 37
- 230000008439 repair process Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a liquid crystal array substrate, a manufacturing method and a repair method of the liquid crystal array substrate. The liquid crystal array substrate comprises a plurality of pixel units defined by scanning lines and data lines in a crossed manner, each pixel unit further consists of a common electrode line, a shading line and a thin film transistor connected with the data line and a pixel electrode, each shading line is positioned below the corresponding data line and connected with the corresponding common electrode line, and each pixel electrode covers the corresponding shading line and the corresponding common electrode line. When a certain data line is in short circuit with the corresponding shading line below the data line, the shading line above a short-circuit point cuts off the data line in a vacant area between the shading line and the scanning line of a corresponding upper pixel and also cuts off the data line in a vacant area between the common electrode line below the short-circuit point and the corresponding scanning line, and the cut data lines are repaired by a repairing line. Notches among the pixel electrodes, the shading lines and the common electrode lines are omitted, accordingly, the area of each pixel electrode is enlarged, and the pixels below the short-circuit point can be normally used for displaying while aperture ratios of the pixels are increased.
Description
Technical field
The present invention relates to a kind of lcd technology, particularly relate to a kind of liquid crystal array substrate and manufacture method, restorative procedure.
Background technology
At present, Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal Display, TFT-LCD) has become the main display terminal in display field.The key component of TFT-LCD is the liquid crystal panel of being fitted by array base palte and color membrane substrates.The material cost of liquid crystal panel and qualification rate in process of production directly have influence on the price of TFT-LCD.
Existing array base palte is in structure, directly shading line is placed below data line, be short-circuited if there is data line and shading line, patent CN202196781U discloses display cell structure (as shown in Figure 1) needed for a kind of reparation of array base palte and restorative procedure (as shown in Figure 2) accordingly.
In FIG, the sweep trace 10 be parallel to each other and public electrode wire 12 horizontal distribution, data line 20 vertical distribution, the minimum repetitive that crisscross sweep trace 10, public electrode wire 12 and data line 20 are formed is as a pixel.
The transistor 30 of a connection data line 20 and transparent pixels electrode 40 is also comprised in pixel.At envisaged underneath one section of shading line 11 of data line 20, shading line 11 is connected with public electrode wire 12, between shading line 11, public electrode wire 12 and transparent pixels electrode 40, have breach 60.Between shading line 11 is exactly the transverse direction width in pixel openings district through district, is placed on the transverse direction width that can increase pixel openings district 60 below data line 20 by shading line 11, improves pixel aperture ratio.
As shown in Figure 3, when there is short circuit 70 between the data line 20 of this high aperture ratio pixel and shading line 11, shading line 11 and pixel electrode 40 is utilized not to cut off that to get final product patch cord bad in overlapping 81,82 place.
But existing restorative procedure has following problem:
1, in order to carry out cut-out process in place as shown in Figure 2, just transparent pixels electrode can not be covered shading line and the public electrode wire in this region, need formation one to be used as the light leak region 60 cut off, sacrifice one part of pixel aperture opening ratio.
2, by twice cut-out process of shading line and pixel electrode not overlapping, the current potential of shading line becomes floating potential from original public electrode current potential, and the pixel capacitance effect of both sides is changed, and causes the pixel display effect of both sides not too normal.
If 3 when open circuit 81,82 place's cut, cut to the pixel electrode on limit, cause pixel electrode and the short circuit of shading line or pixel electrode and public electrode wire short circuit, pixel will be caused to show abnormal.
Summary of the invention
The invention provides a kind of liquid crystal array substrate of high aperture and manufacture method thereof and liquid crystal display.
The present invention provides again one to have high aperture, and ensures, when the shading line of data line and below is short-circuited, to repair the restorative procedure that result can not affect the pixel display effect of the left and right sides.
The invention provides a kind of liquid crystal array substrate, comprise and intersect by multiple sweep trace and multiple data line the multiple pixel cells limited, thin film transistor (TFT) and pixel electrode is comprised in each pixel cell, the grid of thin film transistor (TFT) is connected with sweep trace, the source electrode of thin film transistor (TFT) is connected with data line, the drain electrode of thin film transistor (TFT) is connected with pixel electrode, each pixel cell also comprises: between adjacent two sweep traces and the public electrode wire parallel with sweep trace, and to be connected with public electrode wire and shading line between adjacent two sweep traces, described shading line is positioned at the below of described data line, described pixel electrode covers described shading line and public electrode wire.
The present invention provides again the manufacture method of array base palte, it is characterized in that, comprises the steps:
Step 1: form sweep trace, grid, shading line and public electrode wire on the glass substrate, public electrode wire is connected with shading line;
Step 2: on the substrate of forming step 1, forms gate insulator;
Step 3: on the substrate of forming step 2, is formed with active layer;
Step 4: on the substrate of forming step 3, forms the data line and source-drain electrode that are positioned at above shading line;
Step 5: on the substrate of forming step 4, forms protective seam and contact hole;
Step 6: on the substrate of forming step 4, formation is connected with contact hole and covers the pixel electrode of described shading line and public electrode wire.
The present invention provides again a kind of restorative procedure of liquid crystal array substrate, when there is short dot between data line and the shading line of below, it is characterized in that, restorative procedure comprises the steps: that the data line of idle area between shading line above by short dot and the sweep trace of a upper pixel cuts off and cut off by the data line of idle area between the public electrode wire below short dot and sweep trace; By repair line, repair process is carried out to the data line after cut-out.
Liquid crystal array substrate of the present invention by not having unnecessary vacant light leak region between data line and shading line, thus the area of pixel electrode is increased, thus the aperture opening ratio of pixel can be improved, reduce the material cost of backlight, the power consumption of product can be reduced simultaneously.While the aperture opening ratio improving pixel, ensure when the shading line of data line and below is short-circuited, by the two ends up and down of cutting-off of short-circuit point place data line, and repair the data line below short dot by repair line, ensure that the pixel below short dot can normally show.And thought of the present invention is not by the display of liquid crystal display mode, as long as the structure adopting shading line to be placed on below data line can adopt restorative procedure of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the defective liquid crystal display pixel unit of existing tool;
Fig. 2 is the restorative procedure schematic diagram of the defective liquid crystal display pixel unit of tool shown in Fig. 1;
Fig. 3 is the structural representation of liquid crystal array substrate of the present invention;
Fig. 4 is the cut-open view of Fig. 3 in A-A ' direction;
Fig. 5 is the restorative procedure schematic diagram of the defective liquid crystal array substrate of tool shown in Fig. 4;
Fig. 6 is the repair process schematic diagram of restorative procedure shown in Fig. 5.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
The invention provides a kind of liquid crystal array substrate, Fig. 3 is the structural representation of this liquid crystal array substrate, Fig. 4 is the cut-open view of Fig. 3 in A-A ' direction, the manufacture process of this liquid crystal array substrate is as follows: the first step: on glass substrate 1, form sweep trace 10, the grid be connected with sweep trace 10, shading line 11 and public electrode wire 12, public electrode wire 12 is connected with shading line 11 is vertical; Second step: then form gate insulator 13; 3rd step: be formed with active layer 14 on insulation course 13; 4th step: formed data line 20 and source-drain electrode (figure does not show, and label shown in Fig. 3 for " 30 " region be a thin film transistor (TFT)); 5th step: form protective seam 15; 6th step: the contact hole 16 forming contact hole 16(Fig. 4 and Fig. 5 be can't see originally, but in order to contact hole 16 can be shown, therefore contact hole is drawn in the top of pixel electrode 40); 7th step: formation is connected with contact hole 16 and covers the pixel electrode 40 of shading line 11 and public electrode wire 12.
According to the manufacture method of above-mentioned liquid crystal array substrate, the structure of liquid crystal array substrate of the present invention is: it comprises and intersects by multiple sweep trace 10 and multiple data line 20 the multiple pixel cells limited, each pixel cell comprises public electrode wire 11, shading line 12, thin film transistor (TFT) 30 and pixel electrode 40, the grid of thin film transistor (TFT) is connected with sweep trace 10, the source electrode of thin film transistor (TFT) is connected with data line 20, the drain electrode of thin film transistor (TFT) is connected with pixel electrode 40, public electrode wire 11 is parallel with sweep trace 10 between adjacent two sweep traces 10, shading line 12 is connected with public electrode wire 12 is vertical and is positioned at adjacent two sweep traces 10, and described shading line 11 is positioned at the below of described data line 20, and pixel electrode 40, data line 20 and shading line 11 three are positioned at different layers, data line 20 and shading line 11 have insulation course 13.
Shading line 12 stretches out the distance of data line at least 2um in data line 20 both sides, described pixel electrode 40 covers described shading line 11 and public electrode wire 12, and described pixel electrode 40 and shading line 11 have overlapping region in data line 20 both sides, the distance of this overlapping region range data line 20 at least 1um.
Because shading line 11 and public electrode wire 12 cover by pixel electrode 40, therefore this liquid crystal array substrate, thus make between data line 20 and shading line 12, there is no unnecessary vacant light leak region, make the region of two the corner script light leaks in left and right below former pixel electrode 40 effectively can control light, thus the effective vent area of pixel electrode 40 is increased, thus the aperture opening ratio of pixel can be improved, reduce the material cost of backlight, the power consumption of product can be reduced simultaneously.
Liquid crystal array substrate of the present invention, in the manufacture process of liquid crystal panel, due to design or technique, causes data line to be short-circuited or the line defect of open circuit and so on and the display that produces is bad has a lot, has accounted for overall bad very large proportion.In order to improve the yields of production, normally line defect is repaired.
As Fig. 5, when the shading line 11 of data line 20 and below is short-circuited and has short dot 70, due to shading line 11 and between public electrode wire 12 and the sweep trace of both sides, there is idle area, therefore this restorative procedure is as follows: by the data line laser cutting of the shading line 11 above short dot 70 and the idle area between the sweep trace 10 of a upper pixel, and there is the first open circuit 81; By the data line laser cutting of the idle area between the public electrode wire 12 below short dot 70 and sweep trace 10, and there is the second open circuit 82.
Make data line 20 cannot provide normal pixel voltage below the first open circuit 81 by cutting off process, then by repair line, repair process is carried out to the data line cut off below rear second open circuit 82, namely below the first open circuit 81, second open circuit 82, adopt repair line to input normal data voltage V, thus can ensure that the pixel of short dot 70 both sides of data line 20 can show normally as other normal pixel.
In order to ensure that short dot can normally show, adopting the repair line shown in Fig. 6 to carry out broken string repair process to the data line after cut-out, guaranteeing that the pixel below short dot can normally show.There is provided the first voltage L1 by the first open circuit 81 place on the upside of short dot 70, the second open circuit 82 of downside provides the second voltage L2, again the first voltage L1 is connected with the second voltage L2, thus can ensures that the pixel of short dot 70 both sides of data line 20 can show normally as other normal pixel.
Figure 6 shows that the schematic diagram how carrying out reparation two broken data wires, first suppose that 2 data line L1 and L2 have the first trip point 71 and the second trip point 72 respectively in liquid crystal panel, this first trip point 71 is repaired by the first repair line R1, and the second trip point 72 is repaired by the second repair line R2.
Assuming that circuit board PCB has ten chip IC-1 to IC-10, the data line L1 be wherein connected with odd number IC and the shading line of below are short-circuited, and there is the first trip point 71 after the cut-out process shown in Fig. 5, the data line L2 be connected with even chip IC and the shading line of below are short-circuited, and there is the second trip point 72 after the cut-out process shown in Fig. 5, first short trip point 71 is repaired by the first repair line R1, and the second breakpoint 72 is repaired by the second repair line R2.
First repair line R1 and the second repair line R2 on a display screen side is respectively divided into 5 sections, is not connected each other.Data line is controlled by 10 drive IC, and the first repair line R1 is connected with odd number IC, and the second repair line R2 is connected with even number IC.5 sections of first repair line R1 be separated accumulate a first repair line R1 after PCB, and 5 sections of second repair line R2 be separated accumulate a second repair line R2 after PCB.Repair wherein a certain article of broken string and need laser bonding 3 points: the 1st O1 is at the place of reporting to the leadship after accomplishing a task of upside repair line and broken string, and the 2nd O2 locates reporting to the leadship after accomplishing a task of breaking of the reparation line segment of connection IC and horizontal repair line, the 3rd O3 is at the place of reporting to the leadship after accomplishing a task of downside repair line and broken string.The place needing welding is all overlapped by two of different layers sections of metal wires.Fig. 1 is the schematic diagram observing repair line from the glass of TFT side, because broken string reparation carries out laser operations in TFT substrate side.
Liquid crystal array substrate of the present invention, by not having unnecessary vacant light leak region between data line and shading line, can promote the aperture opening ratio of pixel greatly; When the shading line of data line and below is short-circuited, by the two ends up and down of cutting-off of short-circuit point place data line, and repair the data line below short dot by repair line, ensure that the pixel below short dot can normally show, so, thought of the present invention is not by the display of liquid crystal display mode, as long as the structure adopting shading line to be placed on below data line can adopt restorative procedure of the present invention.
Claims (9)
1. a liquid crystal array substrate, comprise and intersect by multiple sweep trace and multiple data line the multiple pixel cells limited, thin film transistor (TFT) and pixel electrode is comprised in each pixel cell, the grid of thin film transistor (TFT) is connected with sweep trace, the source electrode of thin film transistor (TFT) is connected with data line, the drain electrode of thin film transistor (TFT) is connected with pixel electrode, it is characterized in that: each pixel cell also comprises: between adjacent two sweep traces and the public electrode wire parallel with sweep trace, and to be connected with public electrode wire and shading line between adjacent two sweep traces, described shading line is positioned at the below of described data line, described pixel electrode covers described shading line and public electrode wire, when there is short dot between data line and the shading line of below, by the shading line above short dot and between the sweep trace of a upper pixel data line of idle area cut off, and the data line of idle area between the public electrode wire below short dot and sweep trace is cut off, by repair line, repair process is carried out to the data line after cut-out.
2. liquid crystal array substrate according to claim 1, is characterized in that: do not arrange light leak region between data line and shading line.
3. liquid crystal array substrate according to claim 1, is characterized in that: the region that described pixel electrode covers shading line and public electrode wire has: pixel electrode and shading line have overlapping region and pixel electrode and shading line and public electrode wire and have overlapping region in data line both sides.
4. liquid crystal array substrate according to claim 3, is characterized in that: shading line stretches out the distance of data line at least 2um in data line both sides.
5. liquid crystal array substrate according to claim 1, is characterized in that: described sweep trace, public electrode wire and shading line are positioned at the same layer of array base palte.
6. liquid crystal array substrate according to claim 1, is characterized in that: described data line, pixel electrode and shading line three all at different layers, and have insulation course between shading line and data line.
7., according to the manufacture method of the arbitrary described array base palte of claim 1-6, it is characterized in that, comprise the steps:
Step 1: form sweep trace, grid, shading line and public electrode wire on the glass substrate, public electrode wire is connected with shading line;
Step 2: on the substrate of forming step 1, forms gate insulator;
Step 3: on the substrate of forming step 2, is formed with active layer;
Step 4: on the substrate of forming step 3, forms the data line and source-drain electrode that are positioned at above shading line;
Step 5: on the substrate of forming step 4, forms protective seam and forms contact hole;
Step 6: on the substrate of forming step 4, formation is connected with contact hole and covers the pixel electrode of described shading line and public electrode wire.
8. the manufacture method of array base palte according to claim 7, it is characterized in that, in step 6, described pixel electrode and shading line have overlapping region in data line both sides.
9. the restorative procedure of array base palte according to claim 1, is characterized in that: described cut-out laser cutting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210199070.5A CN102722058B (en) | 2012-06-15 | 2012-06-15 | Liquid crystal array substrate, manufacturing method and repair method of liquid crystal array substrate |
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| CN201210199070.5A CN102722058B (en) | 2012-06-15 | 2012-06-15 | Liquid crystal array substrate, manufacturing method and repair method of liquid crystal array substrate |
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| CN102722058A CN102722058A (en) | 2012-10-10 |
| CN102722058B true CN102722058B (en) | 2015-02-04 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345095A (en) * | 2013-07-11 | 2013-10-09 | 深圳市华星光电技术有限公司 | TFT-LCD array substrate and display device |
| CN103680326B (en) * | 2013-12-26 | 2016-10-05 | 南京中电熊猫液晶显示科技有限公司 | A kind of high opening dot structure and restorative procedure thereof |
| CN204462602U (en) * | 2015-03-27 | 2015-07-08 | 京东方科技集团股份有限公司 | Array base palte and display device |
| CN104992948B (en) * | 2015-06-03 | 2018-07-06 | 京东方科技集团股份有限公司 | A kind of thin film transistor (TFT), array substrate and preparation method thereof |
| CN105093754B (en) * | 2015-08-21 | 2019-02-22 | 重庆京东方光电科技有限公司 | A kind of TFT-LCD array substrate and preparation method thereof, display device |
| CN105068301A (en) * | 2015-08-25 | 2015-11-18 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and device |
| CN107797352B (en) * | 2017-11-17 | 2020-06-05 | 深圳市华星光电半导体显示技术有限公司 | Array substrate, display panel, display device and manufacturing method of array substrate |
| TWI669556B (en) * | 2018-06-29 | 2019-08-21 | 友達光電股份有限公司 | Display panel |
| CN111624823A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Pixel structure for TN type display panel, array substrate and TN type display panel |
| CN112748615B (en) * | 2021-01-04 | 2022-11-29 | 成都中电熊猫显示科技有限公司 | Array substrate and repairing method thereof |
| CN115268128B (en) * | 2022-08-04 | 2023-08-22 | 苏州华星光电技术有限公司 | Array substrate, display panel and defect repairing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758120A (en) * | 2004-09-17 | 2006-04-12 | 三星电子株式会社 | LCD and display board thereof |
| CN101989017A (en) * | 2009-07-30 | 2011-03-23 | 瀚宇彩晶股份有限公司 | Array substrate and twisting nematic liquid crystal display panel |
| CN202196781U (en) * | 2011-07-29 | 2012-04-18 | 南京中电熊猫液晶显示科技有限公司 | Array substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100679513B1 (en) * | 2000-05-10 | 2007-02-07 | 엘지.필립스 엘시디 주식회사 | Array substrate of Liquid crystal display |
| TWI409559B (en) * | 2010-08-27 | 2013-09-21 | Chunghwa Picture Tubes Ltd | Liquid crystal display (lcd) panel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758120A (en) * | 2004-09-17 | 2006-04-12 | 三星电子株式会社 | LCD and display board thereof |
| CN101989017A (en) * | 2009-07-30 | 2011-03-23 | 瀚宇彩晶股份有限公司 | Array substrate and twisting nematic liquid crystal display panel |
| CN202196781U (en) * | 2011-07-29 | 2012-04-18 | 南京中电熊猫液晶显示科技有限公司 | Array substrate |
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