CN102629004B - Bright spot maintenance method for liquid crystal display - Google Patents
Bright spot maintenance method for liquid crystal display Download PDFInfo
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- CN102629004B CN102629004B CN201210055602.8A CN201210055602A CN102629004B CN 102629004 B CN102629004 B CN 102629004B CN 201210055602 A CN201210055602 A CN 201210055602A CN 102629004 B CN102629004 B CN 102629004B
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- Prior art keywords
- color film
- carbonization
- aging
- keeped
- gap
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Classifications
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- 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
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
Abstract
The embodiment of the invention provides a bright spot maintenance method for a liquid crystal display and relates to the field of maintenance of thin film transistor liquid crystal display substrates. By the method, the problem of low bright spot can be solved and the maintenance success ratio can be increased. The method comprises the following steps: performing modification treatment on a color film in the maintained subpixel region by using laser and carbonizing the color film in the maintained subpixel region to form a carbonized color film; performing ageing treatment on the carbonized color film and a matrix strip adjacent to the carbonized color film to form the aged color film and the aged matrix strip; forming a gap between the aged color film and a substrate; and performing granulation treatment on the aged matrix strip, wherein black grains fall into the gap, so that the color film in the maintained subpixel region is covered by the black grains. The embodiment of the invention is applied to bright spot maintenance of the liquid crystal display.
Description
Technical field
The present invention relates to the maintenance field of Thin Film Transistor-LCD, relate in particular to a kind of liquid crystal display bright spot method for maintaining.
Background technology
In the manufacture process of TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Transistor-LCD), in order to improve yields and the quality of product, bad maintenance is absolutely necessary.
In actual production process, bad kind is a lot.Wherein, have on the display screen of a kind of bad LCD of showing as and have bright spot, have at present a kind of method for maintaining described bright spot can be keeped in repair into dim spot.This method for maintaining, for when TFT-LCD is normal white mode, adopts the mode of laser bonding to be added in drain electrode the high voltage of grid upper, and the voltage at liquid crystal two ends is remained on+more than 4V, thus make respective pixel be shown as dim spot.
In carrying out the process of above-mentioned maintenance, inventor finds that in prior art, at least there are the following problems: on the one hand, the overtension at liquid crystal two ends will cause rgb pixel to occur the situation of low bright spot; On the other hand, in drain electrode, apply the pixel electrode on voltage turn-on TFT and color film, can cause Particle (foreign particles) badness, repairable rate is low, even causes line bad.
Summary of the invention
Embodiments of the invention provide a kind of bright spot method for maintaining, can solve low bright spot problem, and improve repairable rate.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of liquid crystal display bright spot method for maintaining, for the color membrane substrates of liquid crystal display is keeped in repair, color membrane substrates mainly comprises substrate, is arranged at black matrix and color rete on this substrate, and described black matrix comprises a plurality of matrix bars, utilizes laser to carry out following steps:
Color film to the subpixel area of being keeped in repair carries out modification;
Color film to described subpixel area of being keeped in repair carries out carbonization, forms the color film of carbonization;
The color film of described carbonization and the matrix bar adjacent with the color film of described carbonization are carried out to burin-in process, form aging color film and aging matrix bar;
Between described aging color film and substrate, form gap;
Described aging matrix bar is carried out to grainy treatment, and the black particle of generation falls into described gap, and described black particle is covered on the color film of carbonization of described subpixel area of being keeped in repair.
Concrete, described aging matrix bar is carried out to grainy treatment, the black particle of generation falls into described gap and specifically comprises:
The described described aging matrix bar by maintenance sub-pixel one side is carried out to grainy treatment, and the black particle of generation falls into described gap;
The described described aging matrix bar by maintenance sub-pixel opposite side is carried out to grainy treatment, and the black particle of generation falls into described gap.
Concrete, when black particle in described gap is not enough, continue carrying out grainy treatment with the described described aging matrix bar being contacted by maintenance sub-pixel, the black particle of generation falls into described gap.
Preferably, described method also comprises: utilize laser by the black particle diffusion in described gap evenly.
Preferably, utilizing before laser carries out modification to the color film of the subpixel area of being keeped in repair, also comprise: to the color film of described subpixel area of being keeped in repair and with described, by the adjacent matrix bar of the color film of maintenance subpixel area, carried out burin-in process.
Preferably, when described subpixel area of being keeped in repair is red pixel area, the color film of described carbonization and the matrix bar adjacent with the color film of described carbonization are being carried out to burin-in process, after forming aging color film and aging matrix bar, also comprise: utilize laser action in the edge of described red pixel area.
Concrete, the color film of the subpixel area of being keeped in repair is carried out to carbonization, forming the color film of carbonization sharp light wavelength used is the first wavelength, the span of described the first wavelength is 270nm～480nm; Other steps sharp light wavelength used is second wave length, and the span of described second wave length is 270nm～390nm.
Preferably, described the first wavelength is 466nm; Described second wave length is 349nm.
The liquid crystal display bright spot method for maintaining that the embodiment of the present invention provides; employing is by the chemistry light shading method of color film carbonization; with matrix bar granulating is covered to the bright spot problem existing on the method maintenance fluid crystal display that the physical property light shading method on color film combines; can solve so low bright spot problem, and improve repairable rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the color membrane substrates that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of bright spot method for maintaining that Fig. 2 provides for the embodiment of the present invention;
The first effect schematic diagram of the method that Fig. 3 provides for the embodiment of the present invention;
The second effect schematic diagram of the method that Fig. 4 provides for the embodiment of the present invention;
The third effect schematic diagram of the method that Fig. 5 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of bright spot method for maintaining that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Be illustrated in figure 1 the color membrane substrates of Thin Film Transistor-LCD, described color membrane substrates comprises color rete 2 and the matrix bar 1 adjacent with color rete, the color film 2 that color film shown in Fig. 1 is the subpixel area of being keeped in repair, in this subpixel area, locate to exist bright spot, therefore need to keep in repair the color film place shown in figure.
The embodiment of the present invention provides a kind of bright spot method for maintaining, as shown in Figure 2, when the color film matcoveredn of the subpixel area that needs repairing, said method comprising the steps of:
201, the color film 2 of the subpixel area of being keeped in repair is carried out to modification.
Optionally, utilize wavelength coverage for 270nm～390nm, the laser that laser intensity is 225nJ～375nJ irradiates the color film 2 of the subpixel area of being keeped in repair with speed 40～60 μ m/s, and preferred laser intensity is 300nJ, and speed is 45 μ m/s.This laser can change the molecular bonding structure of the material that forms described color film, thereby changes described material character, improves the thermotolerance of color membrane material, is conducive to like this laser described color film is carried out to carbonization.
202, the color film of described subpixel area of being keeped in repair is carried out to carbonization, form the color film 2-1 of carbonization.
Be illustrated in figure 3 the effect schematic diagram that forms the color film 2-1 of carbonization.Optionally, utilize the laser that wavelength coverage is 270nm～480nm to irradiate the color film 2 of the subpixel area of being keeped in repair with speed 60～75 μ m/s, described color film 2 is carried out to carbonization, make it become the carbon of black resistance light.Preferably, the speed of described laser is 70 μ m/s.So far, form the color film 2-1 of carbonization, completed the shading of chemical property.Preferably, in this step, optical maser wavelength used is 466nm.Color film is being carried out in the process of carbonization, because the color film of each pixel region is different to the transmitance of laser, therefore the energy of the laser utilizing during each pixel region of carbonization is also different, the laser intensity used of carbonization blue pixel area is in the prior art 2250～2650nJ to the maximum, and preferred laser intensity is 2500nJ.Red pixel area and green pixel region laser intensity used is 1750～2250nJ, preferred laser intensity 2000nJ.
203, the color film 2-1 of described carbonization and the periphery matrix bar 1 adjacent with the color film of described carbonization thereof are carried out to burin-in process, form aging color film 2-2 and aging matrix bar 1-1.
Optionally, utilize wavelength coverage for 270nm～390nm, laser intensity is that the laser of 150～225nJ carries out preheating with speed 60～75 μ m/s to the color film of described carbonization and the matrix bar adjacent with the color film of described carbonization, reach aging object, the preferred 175nJ of this laser intensity, laser speed is preferably 70 μ m/s.
204, between described aging color film 2-2 and substrate, form gap 3.
Be illustrated in figure 4 the effect schematic diagram that forms gap 3.Optionally, utilize aging color film 2-2 described in the Ear Mucosa Treated by He Ne Laser Irradiation that wavelength coverage is 270nm～390nm, the material of described aging color film 2-2 is changed, produce small contraction, thereby form gap 3 between described aging color film 2-2 and substrate.Because the color film of three pixel regions of red, green, blue is different to the transmitance of laser, in order to guarantee not occur because laser energy is too low incomplete by the gap that causes forming, or the too high gap of formation that causes again of laser energy is too large, it is also different that available technology adopting acts on the energy of laser of different pixels location, being respectively the laser intensity that acts on blue pixel region place is 900～1350nJ, speed is 60～75 μ m/s, the preferred 1100nJ of this laser intensity, and speed is preferably 70 μ m/s; The laser intensity that acts on green pixel location is 1275～1425nJ, and speed is 60～75 μ m/s, the preferred 1350nJ of this laser intensity, and speed is preferably 70 μ m/s; The laser intensity that acts on red pixel area place is 1725～1875nJ, and speed is 50～65 μ m/s, the preferred 1800nJ of this laser intensity, and speed is preferably 55 μ m/s.
205, described aging matrix bar 1-1 is carried out to grainy treatment, the black particle 1-2 of generation falls into described gap, and described black particle is covered on the color film 2-1 of carbonization of described subpixel area of being keeped in repair.
Be illustrated in figure 5 black particle 1-2 is covered to the effect schematic diagram on described aging color film 2-2.
Optionally, utilize laser action that wavelength coverage is 270nm～390nm in described aging matrix bar 1-1, the molecular link that cuts off described aging matrix bar 1-1, by described aging battle array bar 1-1 granulating.Due to aging matrix bar 1-1 granulating; between the matrix bar black particle 1-2 forming, no longer there is molecular force; therefore the black particle 1-2 generating can fall into the gap 3 that step 204 forms automatically, thereby on the aging color film 2-2 of the carbonization that makes described black particle 1-2 be covered in described subpixel area of being keeped in repair.
What this step was concrete can be: first utilize the laser that wavelength coverage is 270nm～390nm to carry out grainy treatment to the described described aging matrix bar 1-1 by maintenance sub-pixel one side, the black particle 1-2 of generation falls into described gap 3; Again the described described aging matrix bar 1-1 by maintenance sub-pixel opposite side is carried out to grainy treatment, the black particle 1-2 of generation falls into described gap 3.Preferably, when black particle 1-2 in described gap 3 is not enough, can continue carrying out grainy treatment with the described described aging matrix bar 1-1 being contacted by maintenance sub-pixel, the black particle 1-2 of generation falls into described gap.
In step 205, laser intensity used is 975nJ～1650nJ, and speed is 85～105 μ m/s; Being preferably laser intensity is 1300nJ, and speed is 95 μ m/s.
Further, as shown in Figure 6, described method also comprises:
206, utilize laser action in the edge of described red pixel area.
Because described color film can be by red, green, blue three pixels form, and same laser is different to the transmitance of each pixel, in step 202, with the laser of second wave length 270nm～390nm, described color film is carried out after carbonization, because described redness and green pixel region are less than the transmitance of blue pixel district to laser to laser to the transmitance of red pixel, therefore redness and the carbonization of green pixel region are more serious, cause color film and the matrix bar intersection adjacent with green pixel region with described red pixel area in described red pixel area and green pixel region unsmooth, therefore need to utilize laser action in the edge of described red pixel area.The laser intensity that this step is used is 1500nJ～1725nJ, and speed is 60～75 μ m/s; Preferred laser intensity is 1600nJ, and speed is 70 μ m/s.
207, utilize laser by the black particle 1-2 diffusion in described gap evenly.
Optionally, after step 205, can utilize wavelength coverage for 270nm～390nm, laser intensity is that the laser of 1050nJ～1650nJ is even by the black particle 1-2 diffusion in described gap 3 with speed 60～75 μ m/s, make the above black particle of even, smooth covering on described aging color film 2-2, the preferred 1300nJ of laser intensity in this step, speed is preferably 70 μ m/s.
Said method is the method while needing repairing the color film matcoveredn of subpixel area, and when described color film unprotect layer, as shown in Figure 6, before step 201, also comprises step 2001:
2001, the color film 2 of described subpixel area of being keeped in repair and the matrix bar 1 adjacent with the color film of the subpixel area of being keeped in repair are carried out to burin-in process.
Color film unprotect layer due to described subpixel area of being keeped in repair; thermotolerance for the adjacent matrix bar 1 of the color film of the subpixel area that improves color film described in the color film 2 of the subpixel area of being keeped in repair and keeped in repair; conveniently carry out later step; reduce the ratio that abnormal occurrence produces, need to carry out burin-in process to color film described in the color film 2 of described subpixel area of being keeped in repair and the matrix bar 1 adjacent with the color film of the subpixel area of being keeped in repair.The optical maser wavelength that this step is used is 270nm～390nm, and laser intensity is 150nJ～225nJ, and speed is 60～75 μ m/s; The preferred 170nJ of this laser intensity, speed is preferably 70 μ m/s.
In said method, step 201,203～207,2001 sharp light wavelengths used are second wave length, and the scope of described second wave length is 270nm～390nm, and preferred, described second wave length is 349nm.
The liquid crystal display bright spot method for maintaining providing in the present embodiment; employing is by the chemistry light shading method of color film carbonization; with matrix bar granulating is covered to the bright spot problem existing on the method maintenance fluid crystal display that the physical property light shading method on color film combines; can solve so low bright spot problem, and improve repairable rate.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. a liquid crystal display bright spot method for maintaining, for the color membrane substrates of liquid crystal display is keeped in repair, color membrane substrates mainly comprises substrate, is arranged at black matrix and color rete on this substrate, and described black matrix comprises a plurality of matrix bars, it is characterized in that, utilize laser to carry out following steps:
Color film to the subpixel area of being keeped in repair carries out modification;
Color film to described subpixel area of being keeped in repair carries out carbonization, forms the color film of carbonization;
The color film of described carbonization and the matrix bar adjacent with the color film of described carbonization are carried out to burin-in process, form aging color film and aging matrix bar;
Between described aging color film and substrate, form gap;
Described aging matrix bar is carried out to grainy treatment, and the black particle of generation falls into described gap, and described black particle is covered on the color film of carbonization of described subpixel area of being keeped in repair.
2. method according to claim 1, is characterized in that, described described aging matrix bar is carried out to grainy treatment, and the black particle of generation falls into described gap and specifically comprises:
The described described aging matrix bar by maintenance sub-pixel one side is carried out to grainy treatment, and the black particle of generation falls into described gap;
The described described aging matrix bar by maintenance sub-pixel opposite side is carried out to grainy treatment, and the black particle of generation falls into described gap.
3. method according to claim 2, is characterized in that, when black particle in described gap is not enough, continues being carried out grainy treatment with described by the adjacent described aging matrix bar of maintenance sub-pixel, and the black particle of generation falls into described gap.
4. according to the method described in claim 1～3 any one claim, it is characterized in that, described method also comprises: utilize laser by the black particle diffusion in described gap evenly.
5. according to the method described in claim 1～3 any one claim, it is characterized in that, utilizing before laser carries out modification to the color film of the subpixel area of being keeped in repair, also comprise:
To the color film of described subpixel area of being keeped in repair and with described, by the adjacent matrix bar of the color film of maintenance subpixel area, carried out burin-in process.
6. method according to claim 1, it is characterized in that, when described subpixel area of being keeped in repair is red pixel area, to the color film of described carbonization and with the matrix bar of the color film of described carbonization, carrying out burin-in process, after forming aging color film and aging matrix bar, described before forming gap between described aging color film and substrate, also comprise:
Utilize laser action in the edge of described red pixel area, described sharp light intensity is 1500nJ～1725nJ, and speed is 60～75 μ m/s.
7. according to claim 1～3 any one claim or method claimed in claim 6, it is characterized in that, the described color film to the subpixel area of being keeped in repair carries out carbonization, forming the color film of carbonization sharp light wavelength used is the first wavelength, and the span of described the first wavelength is 270nm～480nm;
Other steps sharp light wavelength used is second wave length, and the span of described second wave length is 270nm～390nm.
8. method according to claim 7, is characterized in that, described the first wavelength is 466nm;
Described second wave length is 349nm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055602.8A CN102629004B (en) | 2012-03-05 | 2012-03-05 | Bright spot maintenance method for liquid crystal display |
| PCT/CN2012/082367 WO2013131371A1 (en) | 2012-03-05 | 2012-09-28 | Bright spot maintenance method for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055602.8A CN102629004B (en) | 2012-03-05 | 2012-03-05 | Bright spot maintenance method for liquid crystal display |
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| Publication Number | Publication Date |
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| CN102629004A CN102629004A (en) | 2012-08-08 |
| CN102629004B true CN102629004B (en) | 2014-08-06 |
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| CN201210055602.8A Expired - Fee Related CN102629004B (en) | 2012-03-05 | 2012-03-05 | Bright spot maintenance method for liquid crystal display |
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| CN (1) | CN102629004B (en) |
| WO (1) | WO2013131371A1 (en) |
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| KR102561329B1 (en) | 2016-06-10 | 2023-07-28 | 삼성디스플레이 주식회사 | Display apparatus and manufacturing method thereof |
| CN106054435B (en) * | 2016-08-18 | 2019-09-06 | 京东方科技集团股份有限公司 | A kind of pair of box substrate, liquid crystal display panel and its spot removing method |
| CN109212791A (en) * | 2017-07-07 | 2019-01-15 | 京东方科技集团股份有限公司 | The undesirable restorative procedure of display panel, display panel bright spot |
| CN109696756B (en) | 2017-10-20 | 2021-04-09 | 友达光电（昆山）有限公司 | Display panel manufacturing method and display panel |
| CN110441938A (en) | 2019-08-21 | 2019-11-12 | 合肥京东方显示技术有限公司 | The method for maintaining and liquid crystal display panel of liquid crystal display panel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211024A (en) * | 2006-12-29 | 2008-07-02 | Charm&Ci株式会社 | Method and apparatus for repairing liquid crystal display panel |
| CN101446700A (en) * | 2007-11-30 | 2009-06-03 | 乐金显示有限公司 | Color filter of LCD and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3302165B2 (en) * | 1994-03-28 | 2002-07-15 | シャープ株式会社 | How to fix color filter defects |
| TWI395000B (en) * | 2009-03-18 | 2013-05-01 | Au Optronics Corp | Flat display panel and repair method of bright point thereof |
| CN102338942B (en) * | 2010-07-21 | 2013-07-10 | 财团法人工业技术研究院 | Method and system for repairing flat panel display |
-
2012
- 2012-03-05 CN CN201210055602.8A patent/CN102629004B/en not_active Expired - Fee Related
- 2012-09-28 WO PCT/CN2012/082367 patent/WO2013131371A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211024A (en) * | 2006-12-29 | 2008-07-02 | Charm&Ci株式会社 | Method and apparatus for repairing liquid crystal display panel |
| CN101446700A (en) * | 2007-11-30 | 2009-06-03 | 乐金显示有限公司 | Color filter of LCD and manufacturing method thereof |
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| Publication number | Publication date |
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| WO2013131371A1 (en) | 2013-09-12 |
| CN102629004A (en) | 2012-08-08 |
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