CN100580510C - Method for repairing plane display panel - Google Patents
Method for repairing plane display panel Download PDFInfo
- Publication number
- CN100580510C CN100580510C CN200710123474A CN200710123474A CN100580510C CN 100580510 C CN100580510 C CN 100580510C CN 200710123474 A CN200710123474 A CN 200710123474A CN 200710123474 A CN200710123474 A CN 200710123474A CN 100580510 C CN100580510 C CN 100580510C
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- pixel
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- repair process
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000008439 repair process Effects 0.000 claims abstract description 43
- 230000002950 deficient Effects 0.000 claims description 28
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 6
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/354—Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses an FPD Panel repairing method. A bright pixel generated after the unit repairing is converted into a dark pixel by the laser so as to reduce the deflect rate and improve the utilization rate of products. After the conversion of the bright pixel into the dark pixel, when the light projection is lower than a particular value, a distributor is used to repair a red (R) pixel, a green (G) pixel, a blue (B) pixel and a black (BK) pixel, which are not repaired to be dark pixels, thus optimizing the whole repair. The repairing method includes a repair to an execution unit; determining whether a bright defect occurs after the unit repairing; executing a repair when a bright defect occurs so as to covert the bright pixel into a dark pixel; determining whether the light projection is lower than the particular value; and using the distributor repair the red (R) pixel, the green (G) pixel, the blue (B) pixel and the black (BK) pixel which are not converted into dark pixels, if the light projection is lower than the particular value.
Description
Technical field
The present invention relates to a kind of method of repairing plane display panel, more specifically, relate to a kind of like this method that is used for repairing plane display panel, wherein, use laser to convert the bright pixel that produces after the unit repair process to dark pixel,, the product utilization rate is improved so that reduce the product defects rate.And, in order to improve treatment effeciency, after the processing that converts dark pixel to when light emission (lighttransmission) when being lower than particular value, substitute the processing of using laser bright pixel to be converted to dark pixel, use divider (dispenser) that repair process is applied to also not convert to red (R), green (G) of dark pixel, blue (B) and black (BK) pixel, thereby optimize whole repair process.
Background technology
Usually, display is used as the interface between people and the electronic equipment.This class display converts the electronic information signal from each class of electronic devices output to optical information signal, so that the people is from visually discerning this type of information as device for display of message.In these displays, two-d display panel comprises LCD (LCD), plasma display (PDP), Field Emission Display (FED), Organic Light Emitting Diode (OLED) etc.
Fig. 1 is the cross-sectional view of explanation conventional thin film transistor LCD (TFT-LCD).
As shown in fig. 1, this TFT-LCD is configured to comprise: tft array substrate, polarizer, pixel electrode, accumulation electric capacity, oriented layer (alignment layer), sealant, sept (spacer), TFT, liquid crystal, public electrode (ITO), color filter, black matrix (black matrix) etc.
Liquid crystal (LC) cell processing is included in the entire process of manufacturing as the TFT-LCD of one of two-d display panel.
This lc unit is handled the processing that refers to manufacturer's lc unit, wherein, driving circuit is offered completed TFT substrate and color filter substrate, and making can be by the signal unit of driving lc unit.
Lc unit is handled and is characterised in that: handle with TFT processing or color filter and compare, do not need re-treatment under the normal condition.Whole lc unit is handled and can be divided into roughly: oriented layer forms to be handled, and is used for directed LC molecule; Cell gap forms to be handled; LCD ejection is handled; And polarizing coating adheres to processing.
Each processing has different characteristics, and therefore needs different technology, forms the LCD ejection processing of processing, friction treatment, use vacuum etc. as thin polymer film.
Before liquid crystal cells was handled, lc unit was repaired in the performance element repair process.
Yet, in conventional art, be not used in the method for the bright pixel that reparation produces after the unit repair process.So, need a kind of method that is used to repair bright pixel.And, a kind of repair process that can optimize entire process should be proposed.
Summary of the invention
Therefore, the present invention is directed to the problems referred to above and be suggested, and, an object of the present invention is to provide a kind of method that is used for repairing plane display panel, because use laser to convert the bright pixel that produces after the unit repair process to dark pixel, it can reduce the product defects rate, thereby the product utilization rate is improved.This method also can be optimized whole repair process, this is because launch when being lower than particular value when light converting bright pixel to dark pixel after, use divider that repair process is applied to also not convert to red (R), green (G) of dark pixel, blue (B) and black (BK) pixel, substitute and use laser to convert bright pixel the processing of dark pixel to, thereby improved treatment effeciency.
According to an aspect of the present invention, above-mentioned and other purposes can realize that described method comprises by a kind of method that is used for repairing plane display panel is provided: the performance element repair process; Determine after the unit repair process, whether to have produced bright defective; When producing bright defective, carry out repair process, so that convert bright pixel to dark pixel; Determine whether the light emission is lower than the particular value relevant with the desired efficient of two-d display panel after repair process; And when the light emission was lower than particular value, the use divider was repaired red (R), green (G) that does not also convert dark pixel to, blue (B) and black (BK) pixel.
Preferably, the step that determines whether to produce bright defective determine when since one or more former thereby when producing defective bright defective whether occur, described one or more reasons are: the data line under short circuit between the pixel that particle, open-grid (gate open), pixel and data short-circuit between conductors, the a-Si in the liquid crystal is residual, pixel access (pixel channel) short circuit, TFT characteristic are poor, stride data line, the pixel is residual, do not have contact hole, S/D to open a way and stride short circuit between the pixel of gate line.
Preferably, the step of execution repair process is to use laser to carry out.
Preferably, when the light emission surpasses particular value, carry out the step of repair process and carried out once more.
Description of drawings
According to the detailed description below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention, feature and other advantages will more be expressly understood, in the accompanying drawings:
Fig. 1 is the cross-sectional view of explanation conventional planar display panel;
Fig. 2 describes the process flow diagram that is used for the method for repairing plane display panel according to an embodiment of the invention;
Fig. 3 illustrates the cross-sectional view that produces an example of defective owing to the particle on the two-d display panel, and this defective can solve by the method for Fig. 2;
Fig. 4 is the top view of an example of all kinds of defectives that produce on the illustrated planar display panel, and these defectives can solve by the method for Fig. 2;
Fig. 5 is the cross-sectional view of example of the method that is used for repairing plane display panel of explanation application drawing 2;
Fig. 6 is that explanation uses laser bright pixel to be converted to the synoptic diagram of an exemplary process of dark pixel by the method for Fig. 2; And
Fig. 7 A is the synoptic diagram that explanation converts bright pixel to by the method for Fig. 2 a processing of dark pixel to Fig. 7 D.
Embodiment
Now, the preferred embodiment that is used for the method for repairing plane display panel of the present invention with this type of design will be described in detail with reference to the attached drawings.
Fig. 2 describes the process flow diagram that is used for the method for repairing plane display panel according to an embodiment of the invention;
At first, carry out typical unit repair process (S10).Then, determine whether to produce bright defective (S20).When obtaining sure definite result, when promptly having produced bright defective, carry out repair process, so that convert bright pixel to dark pixel (S30).Then, read the light emission and whether be lower than particular value (S40) so that determine it.When the light emission was lower than described particular value, the use divider was changed red (R), green (G) that does not also convert dark pixel to, blue (B) and black (BK) pixel (S50).
Here, as shown in Fig. 3 and Fig. 4, determine whether to produce bright defective.
Fig. 3 illustrates the cross-sectional view that produces an example of defective owing to the particle on the two-d display panel, and this defective can solve by the method for Fig. 2.Fig. 4 is the top view of an example of all kinds of defectives that produce on the illustrated planar display panel, and these defectives can solve by the method for Fig. 2.
As shown in Fig. 3 and Fig. 4, when because one or more former thereby when producing defective, determine that bright defective occurs, described one or more reasons are: the data line under short circuit between the pixel that particle, open-grid, pixel and data short-circuit between conductors, the a-Si in the liquid crystal is residual, pixel access short circuit, TFT characteristic are poor, stride data line, the pixel is residual, do not have contact hole, S/D to open a way and stride short circuit between the pixel of gate line.
Laser is carried out the processing that bright pixel is converted to dark pixel.
In addition, when the light emission surpasses particular value (this means and also do not reach suitable efficient), repeat the repair process that bright pixel is converted to dark pixel.
The preferred embodiment that is used to repair the method for the two-d display panel with certain structure according to of the present invention will be described in detail with reference to the attached drawings.
When definite detailed description to correlation function and structure can make design of the present invention not know, with detailed.The term that will be explained below is considered function of the present invention and defines that it may be different because user, operator or forefathers' intention is different.Therefore, every term all should be understood based on instructions of the present invention content in the whole text.
At first, the present invention relates to reduce the product defects rate, so that improve the product utilization rate by using laser to convert the bright pixel that produces after the unit repair process to dark pixel.
It is any after the performance element repair process or in the performance element repair process and finish the processing that liquid crystal cells is repaired bright pixel after handling then that conventional art does not provide.
Here, bright pixel is represented: always because forming R, G and certain sub-pixel in the B sub-pixel of a complete pixel on color filter works regardless of the voltage that is applied, so unique color of color filter is displayed on the monitor.Even in black matrix (BK), also may produce bright pixel.
When above-mentioned certain sub-pixel is in on-state continuously (, if its be bright pixel continuously), is on the monitor of monochrome (black or in vain) stationary state and will goes wrong.Therefore, the present invention works in such a manner, so that make above-mentioned certain sub-pixel always be in off state (that is dark pixel).
That is to say that the bright pixel that produces is converted into dark pixel during TFT handles.And the bright pixel that produces during the processing of adhering to at TFT and color filter converts bright defective to dark pixel in cell processing.
This bright defective produces in following situation.That is to say that its generation should be owing to during TFT the handles generation of exterior material; Abnormal operation to TFT; And the short circuit that when the TFT processing is being carried out, is causing owing to the artificial exterior material of introducing.
The situation that produces bright defective can be classified as shown in Fig. 3 and Fig. 4.
1) particle in the liquid crystal
2) open-grid
3) pixel and data short-circuit between conductors
4) a-Si is residual
5) pixel access short circuit
6) the TFT characteristic is poor
7) stride short circuit between the pixel of data line
8) data line under the pixel is residual
9) there is not contact hole
10) S/D open circuit
11) stride short circuit between the pixel of gate line
Then, as shown in Fig. 5 and Fig. 6, carry out the processing of using laser to form black matrix.
Fig. 5 is the cross-sectional view of example of the method that is used for repairing plane display panel of explanation application drawing 2.Fig. 6 is that explanation uses laser bright pixel to be converted to the synoptic diagram of an exemplary process of dark pixel by the method for Fig. 2.
When black matrix formed, the color filter that has wherein produced bright defective was just covered by black matrix.Here, by the intensity of control laser, can adjust penetration depth.
Fig. 7 A is the synoptic diagram that explanation converts bright pixel to by the method for Fig. 2 a processing of dark pixel to Fig. 7 D.Fig. 7 A has illustrated R, G and B sub-pixel, and Fig. 7 B has illustrated a pixel.
As shown in Fig. 7 C, when bright defective produces, in certain sub-pixel, produce bright phenomenon.Then, as shown in Fig. 7 D, use laser to repair described certain sub-pixel, thereby convert thereof into dark pixel.
Like this, the present invention uses laser to convert the bright pixel that produces after the unit repair process to dark pixel, thereby has reduced the product defects rate and improved the product utilization rate.
Yet owing to the time of carrying out the processing needs that use laser bright pixel to be converted to dark pixel is long, treatment effeciency may reduce a little.So the present invention works in such a manner,, thereby obtain suitable efficient so that use laser to convert the bright pixel of certain amount to dark pixel.That is to say that the present invention carries out repair process in such a manner, so that convert bright pixel to R, G, B and BK pixel.
More particularly, the repair process that therein bright pixel is converted to dark pixel has been performed after certain amount, ends to use the repair process of laser, then, reads the light emission, so that efficiency of measurement.That is to say, determine whether the light emission is lower than particular value.When described light emission is lower than particular value, show that counter plate has obtained the efficient of expectation.Otherwise, also do not realize the efficient of expecting.Described particular value depends on the consumer of product.
When the light emission is lower than described particular value, then determine to have obtained efficient as expected.Therefore, no longer carry out the processing of using laser to convert dark pixel to.Replace, consider treatment effeciency, R, G, B and the BK pixel transitions of using divider will also not convert dark pixel to become unique pixel.
If the light emission surpasses described particular value, then definite counter plate is also realized the efficient of expectation.Therefore, repeat the repair process of using laser bright pixel to be converted to dark pixel.
As mentioned above, in the method that is used for repairing plane display panel according to the present invention, use laser to convert the bright pixel that produces after the unit repair process to dark pixel, thereby reduce the product defects rate and improve the product utilization rate.
And, after converting bright pixel to dark pixel, when the light emission is lower than particular value, substitute the processing of using laser bright pixel to be converted to dark pixel, the present invention works in such a manner, so that use divider to repair R, G, B and the BK pixel that does not also convert dark pixel to, thereby optimized whole repair process, and improved treatment effeciency.
As up to the present described, although disclosed the preferred embodiments of the present invention with illustrative purposes, the present invention should not be limited to this, but can obtain various modifications, changes and be equal to.Therefore, the preferred embodiments of the present invention can be applied through suitable variation, and do not depart from of the present invention scope and the essence disclosed as claims.
Claims (4)
1. method that is used for repairing plane display panel comprises:
The performance element repair process;
Determine after the repair process of described unit, whether to have produced bright defective;
When producing described bright defective, carry out repair process, so that convert bright pixel to dark pixel;
Determine whether the light emission is lower than the particular value relevant with the desired efficient of two-d display panel after described repair process; And
When described light emission was lower than described particular value, the use divider was repaired red (R), green (G) that does not also convert described dark pixel to, blue (B) and black (BK) pixel.
2. the method for claim 1, wherein, the step that determines whether to produce described bright defective determine when since one or more former thereby when producing defective bright defective whether occur, described one or more reasons are: the data line under short circuit between the pixel that particle, open-grid, pixel and data short-circuit between conductors, the a-Si in the liquid crystal is residual, pixel access short circuit, TFT characteristic are poor, stride data line, the pixel is residual, do not have contact hole, S/D to open a way and stride short circuit between the pixel of gate line.
3. as claim 1 or the described method of claim 2, wherein, carry out the step of repair process and use laser to carry out.
4. the method for claim 1, wherein when the emission of described light surpasses described particular value, carry out the step of repair process and carried out once more.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060107373 | 2006-11-01 | ||
| KR1020060107373A KR100839031B1 (en) | 2006-11-01 | 2006-11-01 | Method for repair of plat display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101174035A CN101174035A (en) | 2008-05-07 |
| CN100580510C true CN100580510C (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710123474A Expired - Fee Related CN100580510C (en) | 2006-11-01 | 2007-06-25 | Method for repairing plane display panel |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100839031B1 (en) |
| CN (1) | CN100580510C (en) |
| TW (1) | TWI342073B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100985892B1 (en) * | 2008-06-05 | 2010-10-08 | 김주태 | Liquid crystal display device and method for repairing the same |
| KR20200104981A (en) | 2019-02-27 | 2020-09-07 | 삼성디스플레이 주식회사 | Display device and reparing method thereof |
| CN111983860B (en) * | 2020-08-10 | 2022-07-29 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113140684B (en) * | 2021-04-16 | 2022-05-31 | 南京国兆光电科技有限公司 | Micro OLED display screen and bright spot defect laser repairing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3310615B2 (en) | 1998-04-17 | 2002-08-05 | シャープ株式会社 | Active matrix type liquid crystal display device and pixel defect repair method |
| KR100487429B1 (en) * | 2001-11-15 | 2005-05-03 | 엘지.필립스 엘시디 주식회사 | Method For Repairing A Defect Of Liquid Crystal Display Device And Liquid Crystal Display Device |
| JP3580550B1 (en) | 2003-08-20 | 2004-10-27 | レーザーテック株式会社 | Pattern substrate defect correcting method, defect correcting apparatus, and pattern substrate manufacturing method |
| JP4410042B2 (en) * | 2004-06-28 | 2010-02-03 | Ｎｔｎ株式会社 | Fine pattern correction device |
| KR20060093411A (en) * | 2005-02-21 | 2006-08-25 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device and method for repairing bright spot of the same |
-
2006
- 2006-11-01 KR KR1020060107373A patent/KR100839031B1/en not_active IP Right Cessation
-
2007
- 2007-06-23 TW TW096122797A patent/TWI342073B/en not_active IP Right Cessation
- 2007-06-25 CN CN200710123474A patent/CN100580510C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101174035A (en) | 2008-05-07 |
| KR100839031B1 (en) | 2008-06-17 |
| TWI342073B (en) | 2011-05-11 |
| TW200822370A (en) | 2008-05-16 |
| KR20080039707A (en) | 2008-05-07 |
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Granted publication date: 20100113 |