CN101241281B - Active element array substrate - Google Patents
Active element array substrate Download PDFInfo
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- CN101241281B CN101241281B CN2007100051520A CN200710005152A CN101241281B CN 101241281 B CN101241281 B CN 101241281B CN 2007100051520 A CN2007100051520 A CN 2007100051520A CN 200710005152 A CN200710005152 A CN 200710005152A CN 101241281 B CN101241281 B CN 101241281B
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- array base
- detection line
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Abstract
The invention discloses an activating element array substrate, adapted for a LCD panel. The activating element array substrate comprises a substrate, an activating element array, a detecting circuit, a plurality of connection pads and a plurality of single-way switch elements. The activating array and the detecting circuit are disposed on the substrate. A plurality of connection pads are connected electrically to the activating element array respectively. A plurality of single-way switch elements are connected respectively between the connection pads and the detecting circuit, and each single-way element has an input end connecting electrically with one of the connection pads and an output end connecting electrically with the detecting circuit. The single-way switch elements can decrease drain current and increase display quality.
Description
Technical field
The invention relates to a kind of component array baseplate, and particularly relevant for a kind of active component array base board that is applicable to display panels.
Background technology
Along with scientific-technical progress, LCD (liquid crystal display, LCD) and plasma display (plasma display panel, the appearance of flat-panel screens (flat panel display) such as PDP), gradually, (cathode ray tube CRT) becomes the main flow of display commodity to replace early stage cathode-ray tube display.Wherein, flat-panel screens commodity now are mostly based on LCD.At present LCD with Thin Film Transistor-LCD (thin film transistor liquid crystal display, TFT-LCD) general.The display panels of Thin Film Transistor-LCD is made of thin-film transistor array base-plate, colored optical filtering substrates and liquid crystal layer.
Fig. 1 is the circuit diagram of the thin-film transistor array base-plate of existing Thin Film Transistor-LCD.See also Fig. 1, thin-film transistor array base-plate 100 comprises substrate 110, detection line 120, thin film transistor (TFT) array 130 and a plurality of connection pad (Pad) 140.Wherein, detection line 120, thin film transistor (TFT) array 130 and connection pad 140 are configured on the substrate 110, and connection pad 140 is electrically connected between thin film transistor (TFT) array 130 and the detection line 120.In addition, thin film transistor (TFT) array 130 comprises multi-strip scanning line (Scan Line), many data lines (Data Line) and a plurality of pixel (Pixel) structure, wherein dot structure comprise thin film transistor (TFT), memory capacitance (Storage Capacitor, Cst) and pixel electrode (Pixel Electrode) etc.
When scanning-line signal and data line signal desire input thin film transistor (TFT) array 130, can apply voltage earlier on switching circuit 128, to close thin film transistor (TFT) 122.By this, stop scanning-line signal and data line signal via detection line 120 mutual interference mutually.In theory, the thin film transistor (TFT) 122 after cutting out can stop scanning-line signal and data line signal to enter p-wire 126 fully.Yet the influence owing to element characteristic even thin film transistor (TFT) 122 cuts out, still has small electric current and flows to p-wire 126 by thin film transistor (TFT) 122, and then forms leakage current (leak current).Leakage current can cause signal to disturb, and increases the load of thin film transistor (TFT) array 130 simultaneously and cause the more consume of multiple current.
Summary of the invention
The purpose of this invention is to provide a kind of active component array base board, to reduce leakage current.
For reaching above-mentioned or other purposes, the present invention proposes a kind of active component array base board, is applicable in the display panels.This active component array base board comprises a substrate, an active cell array, a detection line, a plurality of connection pad and a plurality of unidirectional switch elements.Active cell array and detection line are disposed on the substrate.A plurality of connection pads are electrically connected to active cell array respectively.A plurality of unidirectional switch elements electrically connect respectively between these connection pads and the detection line, and each unidirectional switch elements has an output terminal and an input end.Wherein, output terminal and one of them electric connection of these connection pads, input end then electrically connects with detection line.
In an embodiment of the present invention, unidirectional switch elements comprises a grid, one source pole and a drain electrode.Wherein, grid and source electrode electrically connect, and grid is input end with source electrode, and drain electrode is an output terminal.
In an embodiment of the present invention, connection pad can be sweep trace connection pad or data line connection pad.
In an embodiment of the present invention, detection line comprises many p-wires and a plurality of on-off element.Wherein, these on-off elements are electrically series connection, and are electrically connected at respectively between these p-wires and the unidirectional switch elements.
Based on above-mentioned, active component array base board of the present invention adopts a plurality of unidirectional switch elements with the reduction leakage current, and then promotes display quality.Simultaneously, reduce the load of active cell array to reach the minimizing current loss.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is the circuit diagram of the thin-film transistor array base-plate of existing Thin Film Transistor-LCD.
Fig. 2 is the circuit diagram of the active component array base board of one embodiment of the invention.
Fig. 3 is the connection pad of Fig. 2 and the top view of unidirectional switch elements.
Embodiment
Fig. 2 is the circuit diagram of the active component array base board of one embodiment of the invention.See also Fig. 2, active component array base board 200 is applicable in the display panels, and comprises a substrate 210, an active cell array 220, a detection line 230, a plurality of connection pad 240 and a plurality of unidirectional switch elements 250.Wherein, active cell array 220 all is disposed on the substrate 210 with detection line 230.Active cell array 220 comprises multi-strip scanning line, many data lines and a plurality of dot structure, and wherein dot structure comprises thin film transistor (TFT), memory capacitance and pixel electrode.These connection pads 240 are electrically connected to active cell array 220 respectively, and these connection pads 240 for example are sweep trace connection pad or data line connection pad.In addition, these unidirectional switch elements 250 are electrically connected at respectively between these connection pads 240 and the detection line 230.Each unidirectional switch elements 250 has an output terminal 2510 and an input end 2520.Wherein, one of them electric connection of each output terminal 2510 and these connection pads 240, and these input ends 2520 electrically connect with detection line 230 respectively.
In the present embodiment, detection line 230 comprises many p-wires 232 and a plurality of on-off element 234.These on-off elements 234 are electrically connected at respectively between many p-wires 232 and the unidirectional switch elements 250, and these on-off elements 234 are electrically series connection.On-off element 234 for example is a thin film transistor (TFT), and each on-off element 234 has a drain electrode 2342, one source pole 2344 and a grid 2346.Wherein, each drain electrode 2342 and one of them electric connections of these unidirectional switch elements 250, and each source electrode 2344 be electrically connected to respectively these p-wires 232 one of them.In addition, detection line 230 also comprises a switching circuit 236, and it electrically connects the grid 2346 of each on-off element 234, to be suitable for unlatching and off switch element 234.Kenel that it should be noted that the detection line 230 that present embodiment discloses is only for illustrating, yet the inspection of other difference in functionalitys or kenel also can be applicable in the present embodiment.
Please continue to consult Fig. 2, in the present embodiment, unidirectional switch elements 250 has an input end 2520 and an output terminal 2510, and wherein input end 2520 electrically connects with detection line 230, and output terminal 2510 electrically connects with connection pad 240.When electric current flowed to output terminal 2510 by input end 2520, unidirectional switch elements 250 can be considered a path.Yet when electric current flowed to input end 2520 by output terminal 2510, unidirectional switch elements 250 was considered as a resistance.Therefore, this unidirectional switch elements 250 can reduce leakage current.
Fig. 3 is the connection pad of Fig. 2 and the top view of unidirectional switch elements.Please consult Fig. 2 and Fig. 3 simultaneously, in the present embodiment, each unidirectional switch elements 250 is a kind of thin film transistor (TFT), however the also electronic component of diode (Diode) or other unidirectional conductings of unidirectional switch elements 250.For example, in the present embodiment, unidirectional switch elements 250 comprises a drain electrode 2512, one source pole 2522 and a grid 2524.Wherein, source electrode 2522 electrically connects with grid 2524, and source electrode 2522 and grid 2524 be as input end 2520, and output terminal 2510 then is drain electrode 2512.In addition, the ratio of the channel width W of preferable unidirectional switch elements 250 and passage length L is 60/5.
More specifically, source electrode 2522 need electrically connect with grid 2524, could make thin film transistor (TFT) become unidirectional switch elements 250.With regard to present embodiment, after drain electrode, source electrode 2522 are finished with grid 2524, can be radiated at the surperficial X of source electrode 2522, so that source electrode 2522 combines together with grid 2524 with high energy laser.So, source electrode 2522 electrically connects with grid 2524.Yet the above-mentioned method of utilizing high energy laser only is a kind of embodiment wherein, emphasizes not limit the present invention at this.For example, utilize contact hole (contacthole) to connect the method that source electrode 2522 and grid 2524 or other can electrically connect source electrode 2522 and grid 2524.
In addition, the unidirectional switch elements 250 of present embodiment is to adopt five road photomask processing procedures to form.Yet the thin film transistor (TFT) processing procedure of other three roads, four road photomasks or photomask numeral system journey also can be used for present embodiment.
In sum, active component array base board of the present invention adopts a plurality of unidirectional switch elements with the reduction leakage current, and then reduces the probability that the signal interference takes place.Thus, the display quality of LCD can promote, and reduce the load of active cell array simultaneously and reduce current loss.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, 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 when with being as the criterion that claim was defined.
Claims (5)
1. active component array base board is applicable to that in the display panels, this active component array base board comprises:
One substrate;
One active cell array is disposed on this substrate;
One detection line is disposed on this substrate;
A plurality of connection pads are electrically connected to this active cell array respectively; And
A plurality of unidirectional switch elements, electrically connect respectively between those connection pads and this detection line, and respectively this unidirectional switch elements has an output terminal and an input end, wherein this output terminal and one of them electric connection of those connection pads, and this input end and this detection line electrically connect.
2. active component array base board as claimed in claim 1, it is characterized in that respectively this unidirectional switch elements comprises a grid, one source pole and a drain electrode, wherein this grid and this source electrode electrically connect, and this grid and this source electrode are this input end, and this drains and is this output terminal.
3. active component array base board as claimed in claim 1 is characterized in that, those connection pads comprise sweep trace connection pad or data line connection pad.
4. active component array base board as claimed in claim 1 is characterized in that, this detection line comprises:
Many p-wires; And
A plurality of on-off elements electrically connect respectively between those p-wires and those unidirectional switch elements, and those on-off elements are electrically series connection.
5. active component array base board as claimed in claim 4 is characterized in that respectively this on-off element has a grid, and this detection line also comprises a switching circuit, and it electrically connects those grids of those on-off elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100051520A CN101241281B (en) | 2007-02-07 | 2007-02-07 | Active element array substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100051520A CN101241281B (en) | 2007-02-07 | 2007-02-07 | Active element array substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101241281A CN101241281A (en) | 2008-08-13 |
| CN101241281B true CN101241281B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100051520A Expired - Fee Related CN101241281B (en) | 2007-02-07 | 2007-02-07 | Active element array substrate |
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621057B (en) * | 2009-05-05 | 2011-03-09 | 华映光电股份有限公司 | Active assembly array base plate |
| CN101572045B (en) * | 2009-06-01 | 2011-01-05 | 深圳华映显示科技有限公司 | Flat display and measurement method thereof |
| CN102621721B (en) * | 2012-04-10 | 2015-04-15 | 深圳市华星光电技术有限公司 | Liquid crystal panel, liquid crystal module and method for clarifying reasons resulting in poor screen images thereof |
| CN102692774A (en) * | 2012-05-23 | 2012-09-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel |
| CN102681279B (en) * | 2012-05-30 | 2015-06-10 | 深圳市华星光电技术有限公司 | Substrate for manufacturing procedure of array of panel display device, manufacturing method and corresponding liquid crystal display panel |
| TWI435093B (en) * | 2012-08-23 | 2014-04-21 | Au Optronics Corp | Detection circuit of display panel |
| CN104062784B (en) | 2014-06-25 | 2017-06-30 | 深圳市华星光电技术有限公司 | A kind of panel detection circuit and display panel |
| CN104280914A (en) | 2014-10-16 | 2015-01-14 | 深圳市华星光电技术有限公司 | Wiring structure and displace panel with same |
| CN104280908A (en) * | 2014-10-21 | 2015-01-14 | 深圳市华星光电技术有限公司 | Detection circuit, liquid crystal display panel and manufacturing method of liquid crystal display panel |
| CN104932165B (en) * | 2015-07-20 | 2018-05-25 | 深圳市华星光电技术有限公司 | A kind of liquid crystal panel and voltage adjusting method |
| CN105096785B (en) * | 2015-08-14 | 2020-02-21 | 京东方科技集团股份有限公司 | Array substrate mother board and manufacturing method thereof, display panel and mother board |
| CN105182640B (en) * | 2015-09-06 | 2019-06-07 | 京东方科技集团股份有限公司 | Array substrate and display device |
| CN105489613A (en) * | 2016-01-04 | 2016-04-13 | 京东方科技集团股份有限公司 | Array substrate and fabrication method thereof, detection method and display device |
| CN105759472A (en) * | 2016-05-06 | 2016-07-13 | 深圳市华星光电技术有限公司 | Panel detecting unit, array basal plate and liquid crystal display device |
| CN106128344A (en) * | 2016-08-17 | 2016-11-16 | 深圳晶华显示器材有限公司 | A kind of generic disk being applied to LCD product test |
| WO2019085196A1 (en) * | 2017-11-03 | 2019-05-09 | 惠科股份有限公司 | Wiring structure of display substrate |
| CN110246444B (en) * | 2019-06-19 | 2023-05-30 | 京东方科技集团股份有限公司 | Pixel circuit, testing method thereof and display device |
| WO2021103005A1 (en) * | 2019-11-29 | 2021-06-03 | 京东方科技集团股份有限公司 | Array substrate, and display panel and driving method thereof |
| CN115394262B (en) | 2022-08-26 | 2023-11-24 | 惠科股份有限公司 | Pixel driving circuit and display panel |
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| US5377030A (en) * | 1992-03-30 | 1994-12-27 | Sony Corporation | Method for testing active matrix liquid crystal by measuring voltage due to charge in a supplemental capacitor |
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| CN101241281A (en) | 2008-08-13 |
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