CN102437112B - Method for repairing pixel circuit of active matrix organic light emitting display substrate - Google Patents
Method for repairing pixel circuit of active matrix organic light emitting display substrate Download PDFInfo
- Publication number
- CN102437112B CN102437112B CN 201110419035 CN201110419035A CN102437112B CN 102437112 B CN102437112 B CN 102437112B CN 201110419035 CN201110419035 CN 201110419035 CN 201110419035 A CN201110419035 A CN 201110419035A CN 102437112 B CN102437112 B CN 102437112B
- Authority
- CN
- China
- Prior art keywords
- light emitting
- organic light
- pixel
- film transistor
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a method for repairing a pixel circuit of an active matrix organic light emitting display substrate. The pixel circuit comprises a plurality of scanning lines and data lines which are intercrossed in an insulation manner, and a plurality of virtual device driver (VDD) lines and a plurality of visual source safe (VSS) lines, wherein pixel electrodes are formed in a region for separating the scanning lines and the data lines; a switching thin film transistor (TFT), a driving TFT and an organic light emitting diode are arranged on the intercrossed part of the scanning lines and the data lines; the VSS lines are connected with the negative electrode of the organic light emitting diode; and the positive electrode of the organic light emitting diode is connected with the source of the driving TFT. By the method for repairing the pixel circuit of the active matrix organic light emitting display substrate, the driving TFT of an unqualified pixel fails and the pixel electrode is connected with the VSS lines in the row where the pixel is placed, so that the organic light emitting diode of the pixel is cut off to be changed into a dark point; therefore, abnormal bright points are repaired into the dark points, and the yield of the product is increased; furthermore, the method is easy to operate and implement.
Description
Technical field
The present invention relates to a kind of method for repairing and mending of image element circuit, relate in particular to a kind of method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit.
Background technology
Organic light emitting display (OLED) is the active illuminating device.Compare present main flow flat panel display Thin Film Transistor-LCD (TFT-LCD), OLED has high-contrast, wide viewing angle, low-power consumption, the advantages such as volume is thinner, being expected to become the flat panel display of future generation after LCD, is one of the maximum technology that receives publicity in the present flat panel display.
In the AMOLED preparation process, bad and the holding wire of the pixel of AMOLED display broken string is bad to be the inevitable two class major defects that occur among the preparation technology, and this two classes defective major part concentrates on after the array processes end, above-mentioned when bad when detecting, just need to repair accordingly.Bad for the pixel that occurs after the encapsulation, prior art does not provide realistic plan.Therefore, be necessary to provide the method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit, improve product yield, and simple to operate, easy to implement.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit, unusual bright spot can be accomplished dim spot, improves product yield, and simple to operate, easy to implement.
The present invention solves the problems of the technologies described above the method for repairing and mending that the technical scheme that adopts provides a kind of active matrix/organic light emitting display substrate pixel circuit, described substrate pixel circuit comprises scan line and the data wire that many bar insulations intersect, be formed with pixel electrode in described scan line and the data wire separated region, described scan line and data wire infall are provided with switching thin-film transistor and drive thin-film transistor; Many vdd lines extend along described data wire direction, and described vdd line links to each other with the drain electrode that drives thin-film transistor, and link to each other with the grid that drives thin-film transistor by storage capacitance; Many VSS lines extend along described scan-line direction, and the negative electrode of described VSS line and Organic Light Emitting Diode links to each other, and the anode of described Organic Light Emitting Diode links to each other with the source electrode that drives thin-film transistor; Described method for repairing and mending comprises the steps: a) to confirm bad pixel point position corresponding to unusual bright spot; B) adopt laser cutting method from the grid disconnection with the driving thin-film transistor of described bad pixel point of a side of display array substrate, make the driving film crystal tube failure of described bad pixel point; The VSS line of c) pixel electrode and this pixel of this bad pixel point being expert at is connected together, and becomes dim spot so that the Organic Light Emitting Diode of this pixel turn-offs.
The method for repairing and mending of above-mentioned active matrix/organic light emitting display substrate pixel circuit, wherein, described step c) the VSS line that adopts the laser welding method that this pixel electrode and this pixel are expert at is welded together.
The present invention contrasts prior art following beneficial effect: the method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit provided by the invention, by first the drive TFT of bad pixel being lost efficacy, the VSS line of then its pixel electrode and this pixel being expert at is connected together, and becomes dim spot so that the Organic Light Emitting Diode of this pixel turn-offs.
Description of drawings
Fig. 1 is a kind of dot structure schematic diagram of active matrix/organic light emitting display;
Fig. 2 is a kind of dot structure equivalent circuit diagram of active matrix/organic light emitting display;
Fig. 3 is the dot structure schematic diagram of active matrix/organic light emitting display of the present invention;
Fig. 4 is the flow chart of the method for embodiment of the invention inpainted pixels;
Fig. 5 is the schematic diagram that makes the drive TFT inefficacy of bad point in the embodiment of the invention;
Fig. 6 is that welding anode of the present invention and VSS line make unusual bright spot accomplish the schematic diagram of dim spot.
Among the figure:
1 data wire, 2 scan lines, 3 storage capacitances
7 pixel electrode 8VSS lines, 9 cut points
10 pads.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 3 is the dot structure schematic diagram of active matrix/organic light emitting display of the present invention.
See also Fig. 3, the image element circuit of active matrix/organic light emitting display provided by the invention comprises: scan line 2 and data wire 1 that many bar insulations intersect, be formed with pixel electrode 7 in scan line 2 and data wire 1 separated region, scan line 2 and data wire 1 infall are provided with switching thin-film transistor 5 and drive thin-film transistor 6; Many vdd lines 4 extend along data wire 1 direction, and vdd line 4 links to each other with the drain electrode that drives thin-film transistor 6, and link to each other with the grid that drives thin-film transistor 6 by storage capacitance 3; Many VSS lines 8 extend along scan line 2 directions, and the negative electrode of VSS line 8 and Organic Light Emitting Diode links to each other, and the anode of Organic Light Emitting Diode links to each other with the source electrode that drives thin-film transistor 6.
The equivalence image element circuit is referring to Fig. 2, and described vdd line 4 links to each other with the drain electrode that drives thin-film transistor T2, and links to each other with the grid that drives thin-film transistor T2 by storage capacitance Cs; Many VSS lines 8, extend along described scan-line direction, described VSS line 8 links to each other with the negative electrode of Organic Light Emitting Diode (OLED), the anode of described Organic Light Emitting Diode links to each other with the source electrode that drives thin-film transistor T2, the grid of switching thin-film transistor T1 links to each other with scan line 2 and receives line scan signals Vscan, the source electrode reception of data signal Vdata that links to each other with data wire 1.
Fig. 4 is the flow chart of the method for embodiment of the invention inpainted pixels.
See also Fig. 4, the method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit provided by the invention comprises the steps:
Step S401: confirm unusual bright spot location of pixels;
Step S402: adopt laser cutting method that described pixel driver TFT was lost efficacy;
Step S403: the VSS line that pixel electrode and this pixel of this bad pixel point are expert at is connected together;
Step S404: become dim spot so that the Organic Light Emitting Diode of this pixel turn-offs, finish the reparation of unusual bright spot pixel.
The method for repairing and mending of above-mentioned active matrix/organic light emitting display substrate pixel circuit lost efficacy described pixel driver TFT and can adopt laser cutting method, described pixel drive TFT grid was disconnected at cut point 9 from a side of array pole plate, as shown in Figure 5.The VSS line that the pixel electrode of preferred this bad pixel point of employing laser welding method and this pixel are expert at is connected together, and the Organic Light Emitting Diode of this pixel that breaks down turn-offs and becomes dim spot, pad 10 as shown in Figure 6 like this.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (2)
1. the method for repairing and mending of an active matrix/organic light emitting display substrate pixel circuit, described substrate pixel circuit comprises:
Scan line (2) and data wire (1) that many bar insulations intersect, be formed with pixel electrode (7) in described scan line (2) and data wire (1) separated region, described scan line (2) and data wire (1) infall are provided with switching thin-film transistor (5) and drive thin-film transistor (6);
Many vdd lines (4) extend along described data wire direction, and described vdd line (4) links to each other with the drain electrode that drives thin-film transistor (6), and link to each other with the grid that drives thin-film transistor (6) by storage capacitance (3);
Many VSS lines (8) extend along described scan-line direction, and the negative electrode of described VSS line (8) and Organic Light Emitting Diode links to each other, and the anode of described Organic Light Emitting Diode links to each other with the source electrode that drives thin-film transistor (6);
It is characterized in that described method for repairing and mending comprises the steps:
A) confirm bad pixel point position corresponding to unusual bright spot;
B) adopt laser cutting method to disconnect from a side of the display array substrate grid with the driving thin-film transistor (6) of described bad pixel point, make driving thin-film transistor (6) inefficacy of described bad pixel point;
The VSS line of c) pixel electrode and this pixel of this bad pixel point being expert at is connected together, and becomes dim spot so that the Organic Light Emitting Diode of this pixel turn-offs.
2. the method for repairing and mending of active matrix/organic light emitting display substrate pixel circuit as claimed in claim 1 is characterized in that, described step c) the VSS line that adopts the laser welding method that this pixel electrode and this pixel are expert at is welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419035 CN102437112B (en) | 2011-12-15 | 2011-12-15 | Method for repairing pixel circuit of active matrix organic light emitting display substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419035 CN102437112B (en) | 2011-12-15 | 2011-12-15 | Method for repairing pixel circuit of active matrix organic light emitting display substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102437112A CN102437112A (en) | 2012-05-02 |
| CN102437112B true CN102437112B (en) | 2013-04-03 |
Family
ID=45985101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110419035 Active CN102437112B (en) | 2011-12-15 | 2011-12-15 | Method for repairing pixel circuit of active matrix organic light emitting display substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102437112B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035204B (en) * | 2012-12-27 | 2015-05-27 | 昆山工研院新型平板显示技术中心有限公司 | Repairing method of active matrix organic light-emitting diode (LED) display |
| US9911799B2 (en) | 2013-05-22 | 2018-03-06 | Samsung Display Co., Ltd. | Organic light-emitting display apparatus and method of repairing the same |
| CN104793366B (en) * | 2015-04-23 | 2018-01-16 | 深圳市华星光电技术有限公司 | Liquid crystal panel and its bright spot restorative procedure after bright spot is repaired |
| CN105845085A (en) * | 2016-05-27 | 2016-08-10 | 京东方科技集团股份有限公司 | Pixel circuit, method for repairing pixel bright spot and display device |
| CN105892186A (en) * | 2016-06-13 | 2016-08-24 | 深圳市华星光电技术有限公司 | Array substrate structure and data wire breakage repairing method thereof as well as display device |
| CN108258007B (en) * | 2016-12-28 | 2019-12-03 | 京东方科技集团股份有限公司 | OLED array substrate, display device and dark spot repair method thereof |
| CN106941135B (en) * | 2017-04-11 | 2018-10-19 | 武汉华星光电技术有限公司 | A kind of method for repairing and mending and organic light emitting display panel of organic light emitting display panel |
| CN107248391A (en) * | 2017-06-27 | 2017-10-13 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof, method for maintaining and display device |
| CN107255872B (en) * | 2017-07-19 | 2020-04-10 | 深圳市华星光电半导体显示技术有限公司 | Method for desalting line defect of display device |
| CN107221287B (en) * | 2017-07-31 | 2019-09-06 | 京东方科技集团股份有限公司 | Display panel and its pixel repairing device, pixel repairing method and display |
| CN110459578B (en) * | 2019-08-21 | 2022-06-10 | 合肥鑫晟光电科技有限公司 | Display substrate, preparation method and repair method thereof and display device |
| WO2021109008A1 (en) * | 2019-12-03 | 2021-06-10 | 重庆康佳光电技术研究院有限公司 | Light emitting diode display module, repairing method therefor, and display device |
| CN114333695A (en) * | 2021-12-27 | 2022-04-12 | 武汉天马微电子有限公司 | Display panel, repairing method and display device |
| CN114420882B (en) * | 2022-01-12 | 2023-09-05 | 深圳市华星光电半导体显示技术有限公司 | Display panel, repairing method thereof and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285977A (en) * | 2008-05-30 | 2008-10-15 | 昆山龙腾光电有限公司 | Liquid crystal display device and array substrate thereof |
| US7755712B2 (en) * | 2006-09-11 | 2010-07-13 | Au Optronics Corp. | Array substrate, and method for repairing thereof, and display panel and display apparatus comprising the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI363241B (en) * | 2007-07-16 | 2012-05-01 | Au Optronics Corp | Lower substrate for an fpd |
-
2011
- 2011-12-15 CN CN 201110419035 patent/CN102437112B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7755712B2 (en) * | 2006-09-11 | 2010-07-13 | Au Optronics Corp. | Array substrate, and method for repairing thereof, and display panel and display apparatus comprising the same |
| CN101285977A (en) * | 2008-05-30 | 2008-10-15 | 昆山龙腾光电有限公司 | Liquid crystal display device and array substrate thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102437112A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102437112B (en) | Method for repairing pixel circuit of active matrix organic light emitting display substrate | |
| CN102402943A (en) | Pixel circuit of active-matrix organic light emitting display and method for repairing same | |
| USRE49484E1 (en) | Organic light-emitting display apparatus and method of repairing the same | |
| US9852686B2 (en) | Display device including repaired defective pixels | |
| US11210975B2 (en) | Transparent display device and transparent display panel | |
| CN104637442B (en) | Oganic light-emitting display device, its restorative procedure and its driving method | |
| US9590023B2 (en) | Organic light-emitting display apparatus and method of repairing the same | |
| CN104659058B (en) | Organic light-emitting display device and method for repairing organic light-emitting display device | |
| US10867542B2 (en) | Electroluminescence display | |
| CN102437113B (en) | Repairing method of signal disconnection of active matrix organic light-emitting display array substrate | |
| KR102195180B1 (en) | Display device with redundancy transistor structure | |
| US20200135815A1 (en) | Array test apparatus and method | |
| KR20080100533A (en) | Organic light emitting display panel and manufacturing method thereof | |
| US10090369B2 (en) | Organic light emitting diode display | |
| KR20170049283A (en) | Organic light emitting diode display device including pixel repair structure and pixel repair method thereof | |
| KR102717810B1 (en) | Organic Light Emitting Display Panel and Organic Light Emitting Display having the Same | |
| US20230200169A1 (en) | Electroluminescence Display | |
| KR20160082768A (en) | Organic light emitting display device having repair structure | |
| CN102509720B (en) | Repair method for data wires of array substrate of active matrix organic light emitting display | |
| CN102983283B (en) | Repairable AMOLED device, display screen and method for repairing and mending thereof | |
| US11929027B2 (en) | Display device | |
| US20130307760A1 (en) | Organic light emitting display | |
| CN103035204B (en) | Repairing method of active matrix organic light-emitting diode (LED) display | |
| JP2007140315A (en) | Light emitting device | |
| CN114141843B (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KUNSHAN GUOXIAN OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: KUNSHAN INDUSTRY RESEARCH ACADEMY NOVEL FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD. Effective date: 20150320 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150320 Address after: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, 4 Patentee after: Kunshan Guo Xian Photoelectric Co., Ltd. Address before: 215300, 188, Feng Feng Road, hi tech Zone, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Industry Research Academy Novel Flat Panel Display Technology Center Co., Ltd. |