CN103278984A - Thin film transistor array substrate, display panel and liquid crystal display - Google Patents
Thin film transistor array substrate, display panel and liquid crystal display Download PDFInfo
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- CN103278984A CN103278984A CN201210581250XA CN201210581250A CN103278984A CN 103278984 A CN103278984 A CN 103278984A CN 201210581250X A CN201210581250X A CN 201210581250XA CN 201210581250 A CN201210581250 A CN 201210581250A CN 103278984 A CN103278984 A CN 103278984A
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- 239000010409 thin film Substances 0.000 title claims abstract description 25
- 239000000758 substrate Substances 0.000 title claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 13
- 229920001621 AMOLED Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention discloses a thin film transistor array substrate, a display panel and a liquid crystal display, which are used for reducing the repairing difficulty of the display when line defects occur and improving the yield of products. The thin film transistor array substrate comprises a plurality of pixel units arranged in an array and power lines used for providing working power for the pixel units, and each pixel unit is at least electrically connected with two power lines. According to the invention, at least two power lines are connected to each pixel unit and simultaneously supplied with power, so that when any one power line has a line defect, the other power line or power lines can still ensure the normal work of the pixel unit after being manually removed.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly a kind of thin-film transistor array base-plate, display panel and LCD.
Background technology
Traditional LCD has higher line to lack the generation ratio, much be by analysis because row to pixel power lead and horizontal scan line short circuit or power lead rupture.
With traditional source matrix/organic light emitting diode (AMOLED) panel (Active Matrix/Organic Light Emitting Diode, AMOLED) display is example, luminescent device power lead cabling distributes to adopt usually and is illustrated in fig. 1 shown below, vertical data line 1 is paliform with horizontal sweep trace 2, every capable pixel has one or more sweep trace 2, but wherein only give the luminescent device power supply of each pixel cell 3 with a power lead 4, and existing this display all can cause the generation of line defect under multiple situation, for example:
A. when being short-circuited, the power lead of luminescent device and horizontal scan line will produce line defect;
B. when power lead appearance broken string, its voltage away from the power lead of an end of main power line descends can be more serious, can produce the phenomenon of weak line;
C. broken string occurs when a plurality of positions with the root power lead, also can produce line defect.
The power lead that line defect takes place is to be difficult to repair, and adopt existing this traditional design, only adopt a power lead for powering to each luminescent device, in case above-mentioned these three kinds of situations take place, produce the phenomenon of line defect or weak line, can directly influence yield of products.
Summary of the invention
The embodiment of the invention provides a kind of thin-film transistor array base-plate, display panel and LCD, and the reparation difficulty when reducing display generation line defect improves yield of products.
A kind of thin-film transistor array base-plate that the embodiment of the invention provides comprises a plurality of pixel cells of array setting and is used to described pixel cell that the power lead of working power is provided that each described pixel cell is electrically connected with two power leads at least.
A kind of display panels that the embodiment of the invention provides, described display panels comprises above-mentioned thin-film transistor array base-plate.
A kind of LCD that the embodiment of the invention provides comprises above-mentioned display panels.
The embodiment of the invention, by for each pixel cell connects at least two power leads, be its power supply simultaneously, thereby when having realized therein any power lead generation line defect, behind the artificial removal, one or a few power lead still can guarantee the operate as normal of this pixel cell in addition.
Description of drawings
Fig. 1 arranges synoptic diagram for the existing AMOLED display base plate power lead that the embodiment of the invention provides;
Fig. 2 arranges synoptic diagram for a kind of thin-film transistor array base-plate power lead that the embodiment of the invention provides;
Fig. 3 arranges synoptic diagram for the another kind of thin-film transistor array base-plate power lead that the embodiment of the invention provides.
Embodiment
Existing LCD is very difficult to repair when the line defect situation takes place, and has directly caused the reduction of yields.
In order to solve the problems referred to above of prior art, the embodiment of the invention provides a kind of thin-film transistor array base-plate, display panel and LCD, and the reparation difficulty when reducing display generation line defect improves yield of products.
At first, the embodiment of the invention provides a kind of thin-film transistor array base-plate, comprises a plurality of pixel cells of array setting and is used to described pixel cell that the power lead of working power is provided, and each described pixel cell is electrically connected with two power leads at least.
In embodiments of the present invention, above-mentioned thin-film transistor array base-plate connects two power leads at least with each pixel cell, two power leads all are connected with main power line, so just provide at least two power leads in order to power supply for each luminescent device, like this since wherein a power lead break down when causing line defect, repair simply, the power lead that excision is broken down continues to be got final product for this pixel cell power supply by remaining power lead.
And, because there is impedance in power lead self, be that a pixel cell has connected many power leads, for the pixel cell behind this electric power connection line, equal its equiva lent impedance and carried out parallel connection, overall equiva lent impedance reduces, the voltage that pixel cell is got increases, improved the display brightness of this pixel cell, further improved display effect, alleviated because the problem of the demonstration obfuscation that causes falls in the single supply line pressure.
It should be noted that, because described power lead just provides constant supply voltage for described pixel cell, so the concrete power lead number that connects of each pixel cell can be inconsistent, the concrete quantity of the power lead that arranges between the adjacent columns pixel cell also can be inconsistent, for example between certain adjacent columns pixel cell, be provided with three power leads with thinking this two row pixel cell power supply, be provided with two power leads in addition between certain adjacent columns pixel cell with thinking this two row pixel cell power supply.
In addition, an above-mentioned arbitrary power lead can be any one pixel cell power supply, and annexation is not limited to be located at the pixel cell in the row pixel cell that only is adjacent.For example, the partial pixel unit in a certain row pixel cell can be connected with a power lead, and another part can be connected with another root power lead.
On the basis of above-described embodiment, because as long as guaranteeing each pixel cell links to each other with at least two power leads, that does not limit described power lead specifically arranges the position, thus below introduce the preferred embodiment of several thin-film transistor array base-plates of the present invention:
Embodiment one
At least be provided with two power leads between per two row adjacent pixel unit, described pixel cell is connected with a power lead in described two power leads at least at least.
In present embodiment one, between per two row adjacent pixel unit, power lead is set, and the power lead data between the different lines can conversion, each pixel cell can be selected to be connected with the power lead that is positioned at left side or right side as required.
On the basis of above-described embodiment one, can further be optimized for embodiment two and embodiment three.
Embodiment two
The left side of every row pixel cell or right side are equipped with at least two power leads, and these two described power leads all are connected with each pixel cell of same row pixel cell.
In present embodiment one, each pixel cell in every row pixel cell is connected with many power leads that are positioned at the same side setting, the power lead of a plurality of power supply usefulness is provided for each pixel cell like this, in these power leads any one when breaking down like this, only need artificial excision or rejecting, remaining power lead still can guarantee the operate as normal of pixel cell.
Embodiment three
Be provided with two power leads between the per two adjacent row pixel cells, described two power leads are connected respectively with each pixel cell of the row pixel cell that closes on separately respectively.
In the present embodiment, as shown in Figure 2, two power leads 4 are set between every row pixel cell, be respectively pixel cell 3 power supplies that close on, for each pixel cell provides " dual fail-safe " in the power supply, any one when breaking down of two power leads only need artificial excision or reject, and another root power lead still can guarantee the operate as normal of pixel cell.
Because every power lead can only not link to each other with a row pixel cell, can link to each other with the multiple row pixel cell simultaneously, as a kind of preferred embodiment, the adjacent columns pixel cell can share a power lead.Further, can be preferred embodiment four.
Embodiment four
Be provided with a power lead between the per two adjacent row pixel cells, this power lead is connected respectively with each pixel cell of the row pixel cell of both sides.
In the present embodiment, as shown in Figure 3, arrange the same with traditional power lead, a power lead 4 only is set between two adjacent columns pixel cells, but this power lead is connected with each pixel cell 3 of the row pixel cell of both sides, for their power supply, so also can reach embodiment one described " dual fail-safe " purpose simultaneously.
Described substrate is provided with the data line that be arranged in parallel with described power lead, and described data line and the projection of described power lead on substrate are not overlapping.Power lead is under the situation that guarantees above-mentioned prerequisite, and operated by rotary motion gets final product between the adjacent columns pixel cell, preferably takes setting placed in the middle.The mode of taking power lead is set between two parties can not influence aperture ratio of pixels to greatest extent.
Because described power lead is used to described pixel cell power supply, described power lead is connected with the luminescent device of described pixel cell.
Further, in order to prevent two power lead phase mutual interference for same pixel cell power supply, described different electrical power line connects with the different nodes of the luminescent device of same pixel cell, and should not contact mutually between the described power lead.
If the different electrical power line is connected at same node with the luminescent device of same pixel cell, be equivalent to produce between these power leads and conduct, when a power lead breaks down, even after the excision, still can produce harmful effect to other power leads like this.
Power lead is the single or multiple lift metal, and metal adopts normal some materials that use in this area to get final product, and is generally molybdenum or copper.Adopt multiple layer metal can reach the purpose that reduces common electrode layer resistance.
The embodiment of the invention provides a kind of display panels, and described display panels comprises arbitrary described thin-film transistor array base-plate in the technique scheme.
Described display panels comprises thin-film transistor array base-plate, sequential driver, gate drivers and data driver, color membrane substrates, wherein:
Described gate drivers is connected with sweep trace on the described thin-film transistor array base-plate, and described data driver is connected with data line on the described thin-film transistor array base-plate;
Described sequential driver is arranged on the printing board PCB plate, for described gate drivers and data driver provide the driving signal;
Described thin-film transistor array base-plate and described pcb board link together by gate drivers and data driver;
Described color membrane substrates and described array base palte are oppositely arranged, and are connected with described thin-film transistor array base-plate conduction by conducting resinl;
Described color membrane substrates, thin-film transistor array base-plate and the liquid crystal of filling have between the two formed described display panels.
On the basis of above-described embodiment, the present invention also provides a kind of LCD, comprises the display panels described in the technique scheme.
In general, described LCD is mainly by display panels and provide the back light unit of light source to constitute.The described LCD of the embodiment of the invention is higher than traditional LCD yields, and its process reform is little, is suitable for being directly used in commercial production.
Thin-film transistor array base-plate of the present invention not only can be used for common LCD, can also be used for OLED, QLED or the AMOLED display of LTPS backboard or oxide semiconductor backboard.
In sum, the embodiment of the invention is by connecting two power leads at least for each pixel cell, be its power supply simultaneously, thereby when having realized therein any power lead generation line defect, behind the artificial removal, remaining power lead still can guarantee the operate as normal of this pixel cell.From technological angle, the manufacturing process of thin-film transistor array base-plate of the present invention changes little, can directly apply to commercial production, the commercial value height.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. a thin-film transistor array base-plate comprises a plurality of pixel cells of array setting and is used to described pixel cell that the power lead of working power is provided, and it is characterized in that each described pixel cell is electrically connected with two power leads at least.
2. substrate as claimed in claim 1 is characterized in that, is provided with two power leads at least between per two row adjacent pixel unit, and described pixel cell is connected with a power lead in described two power leads at least at least.
3. substrate as claimed in claim 1 is characterized in that, the adjacent columns pixel cell shares a power lead.
4. as each described substrate of claim 1-3, it is characterized in that described substrate is provided with the data line that be arranged in parallel with described power lead, and described data line and the projection of described power lead on substrate are not overlapping.
5. substrate as claimed in claim 4 is characterized in that, described power lead is connected with the luminescent device of described pixel cell.
6. substrate as claimed in claim 1 is characterized in that, described power lead is the single or multiple lift metal.
7. substrate as claimed in claim 6 is characterized in that, described metal is molybdenum or copper.
8. a display panels is characterized in that, described display panels comprises each described thin-film transistor array base-plate of claim 1-7.
9. a LCD is characterized in that, comprises the described display panels of claim 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210581250XA CN103278984A (en) | 2012-12-27 | 2012-12-27 | Thin film transistor array substrate, display panel and liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210581250XA CN103278984A (en) | 2012-12-27 | 2012-12-27 | Thin film transistor array substrate, display panel and liquid crystal display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331295A (en) * | 2016-04-29 | 2017-11-07 | 群创光电股份有限公司 | Display panel |
| CN107799067A (en) * | 2017-11-24 | 2018-03-13 | 武汉华星光电半导体显示技术有限公司 | AMOLED display panels and display device |
| CN110473883A (en) * | 2019-08-21 | 2019-11-19 | 深圳市华星光电技术有限公司 | Array substrate and OLED display |
| CN110503918A (en) * | 2018-05-16 | 2019-11-26 | 乐金显示有限公司 | Electroluminescent display |
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| JPH06160893A (en) * | 1992-03-27 | 1994-06-07 | Semiconductor Energy Lab Co Ltd | Active matrix and its driving method |
| CN101246667A (en) * | 2006-11-17 | 2008-08-20 | 索尼株式会社 | Pixel circuit, display device, and method of manufacturing pixel circuit |
| JP2009210674A (en) * | 2008-03-03 | 2009-09-17 | Epson Imaging Devices Corp | Electrooptical device and electronic apparatus |
| CN101903934A (en) * | 2008-02-08 | 2010-12-01 | 夏普株式会社 | Pixel circuit and display device |
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- 2012-12-27 CN CN201210581250XA patent/CN103278984A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06160893A (en) * | 1992-03-27 | 1994-06-07 | Semiconductor Energy Lab Co Ltd | Active matrix and its driving method |
| CN101246667A (en) * | 2006-11-17 | 2008-08-20 | 索尼株式会社 | Pixel circuit, display device, and method of manufacturing pixel circuit |
| CN101903934A (en) * | 2008-02-08 | 2010-12-01 | 夏普株式会社 | Pixel circuit and display device |
| JP2009210674A (en) * | 2008-03-03 | 2009-09-17 | Epson Imaging Devices Corp | Electrooptical device and electronic apparatus |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331295A (en) * | 2016-04-29 | 2017-11-07 | 群创光电股份有限公司 | Display panel |
| CN107799067A (en) * | 2017-11-24 | 2018-03-13 | 武汉华星光电半导体显示技术有限公司 | AMOLED display panels and display device |
| WO2019100434A1 (en) * | 2017-11-24 | 2019-05-31 | 武汉华星光电半导体显示技术有限公司 | Amoled display panel and display device |
| US10692955B2 (en) | 2017-11-24 | 2020-06-23 | Wuhan China Star Optoelectronics Semiconductors Display Technology Co., Ltd. | Amoled display panel and display device |
| CN110503918A (en) * | 2018-05-16 | 2019-11-26 | 乐金显示有限公司 | Electroluminescent display |
| CN110473883A (en) * | 2019-08-21 | 2019-11-19 | 深圳市华星光电技术有限公司 | Array substrate and OLED display |
| US11152448B2 (en) | 2019-08-21 | 2021-10-19 | Tcl China Star Optoelectronics Technology Co., Ltd. | Array substrate and OLED display device |
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Application publication date: 20130904 |