CN101441335A - Method for restoring wire break of liquid crystal display device - Google Patents
Method for restoring wire break of liquid crystal display device Download PDFInfo
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- CN101441335A CN101441335A CNA2007101706375A CN200710170637A CN101441335A CN 101441335 A CN101441335 A CN 101441335A CN A2007101706375 A CNA2007101706375 A CN A2007101706375A CN 200710170637 A CN200710170637 A CN 200710170637A CN 101441335 A CN101441335 A CN 101441335A
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Abstract
The invention relates to a disconnection repairing method for an LCD device. The LED device comprises a first insulating layer, a second insulating layer, a first conducting layer arranged in the center of the first insulating layer and a second conducting layer between the first insulating layer and the second insulating layer, a third conducting layer arranged at one side of the second insulating layer. The repairing method comprises the following steps: a. detecting the position of the disconnection of the second conducting layer by the detection device; b. depositing the conducting layer above the second conducting layer area under the protective gas; c. conducting the deposit conducting layer and the second conducting layer by the laser focusing fusion after manufacturing the array substrate and the color film. The repairing method electrically conducts the disconnection metal and the locally manufactured deposit conducting layer above by depositing the conducting layer and damaging the insulating film in the disconnection during the array manufacture so as to increase the good products.
Description
Technical field
The present invention relates to the restorative procedure of wire break of liquid crystal display device.
Background technology
Traditional CRT monitor relies on the phosphor powder on the cathode-ray tube (CRT) emitting electrons bump screen to come display image, but the principle of liquid crystal display is then different fully.Usually, liquid crystal indicator (LCD) has (also claiming color membrane substrates) and infrabasal plate (also claiming array base palte), have each other certain intervals and mutually over against, be formed on two substrates a plurality of electrodes mutually over against, liquid crystal is clipped between upper substrate and the infrabasal plate, voltage is applied on the liquid crystal by the electrode on the substrate, thus then according to the voltage that acted on change the arrangement display image of liquid crystal molecule, because liquid crystal indicator is not launched light as mentioned above, it needs light source to come display image.Therefore, liquid crystal indicator has the backlight that is positioned at the liquid crystal panel back, thereby controls from backlight quantity of incident light display image according to the arrangement of liquid crystal molecule.Accompany glass substrate, colored filter, electrode, liquid crystal layer and transistor film between two polaroids, liquid crystal molecule is the material with refractive index and dielectric constant anisotropy.The light process that backlight sends is polaroid down, becomes the polarized light with certain polarization direction.Institute's making alive between the transistor controls electrode, and this voltage acts on the polarization direction that liquid crystal is controlled polarized light, polarized light forms monochromatic polarized light after seeing through corresponding color film chromatograph, if polarized light can penetrate the upper strata polaroid, then demonstrates corresponding color; Electric field intensity difference, the deflection angle of liquid crystal molecule are also different, and the light intensity that sees through is different, and the brightness of demonstration is also different, and the combination of the different light intensity by three kinds of colors of RGB shows motley image.
The LCD device comprises color membrane substrates and array base palte, and is formed at liquid crystal layer between this color membrane substrates and the array base palte by the method for dripping.The array base palte plate comprises: many select liness, and these select liness are arranged along first direction with fixed intervals; Many data lines, these data lines are arranged along the second direction perpendicular to first direction with fixed intervals; A plurality of pixel electrodes are arranged in by in the pixel region that select lines and data line were limited that intersects with matrix structure: and a plurality of thin film transistor (TFT), these thin film transistor (TFT)s can offer the data of select lines and signal is passed to pixel electrode from data line.Color membrane substrates comprises: black matrix" (BM:black matrix), this black matrix prevent that light from sending from the part except pixel region of first substrate; The color film of RGB is used for display color light, and public electrode, is used to form to show required electric field.The thick sept of the box of maintenance is arranged between the glass substrate of fitting mutually.
In the manufacture process of actual product, breaking, bad to have accounted for overall bad proportion very big.For the yields that improves production is normally repaired the lead of poor flow.In the array processes process, by after finishing each conductor layer, open a way the measurement aspect the short circuit of different checkout equipments, bad with timely discovery, in time repair, owing to finish measurement and the reparation that metal level carries out just, thereby can obtain reasonable conducting efficient and reliability result.Above-mentioned restorative procedure is generally the cutting and the laser CVD (ChemicalVapor Deposition, chemical vapor deposition) of laser.By to the metal of part or conductive pattern cutting can repair part because the short circuit that kish or conducting objects cause can connect the lead that disconnects by the part being carried out laser CVD, to repair this broken string.
Above-mentioned broken string reparation is after metal carbonyl conducting layer forms, and dielectric film does not carry out before forming as yet, and the metal that laser CVD forms directly is covered in conductive line surfaces, thereby reasonable contact performance is arranged.But above-mentioned restorative procedure can't be suitable for after conductive line surfaces forms dielectric film, and in engineering, exist sizable broken string omission probability, in case after covering dielectric film, find to have broken string, then can only rely on particular design and subsequent technique to come broken string is repaired.Be simply described as follows at the mode of in array side the broken string of finishing the dielectric film covering being repaired at present: at first find out array side and finished the place that the broken string of dielectric film covering takes place, next utilizes superlaser that the dielectric film of broken string place both sides metal top is hit, to remove the dielectric film on surface, spill conductive layer, make original lead conducting that disconnects by laser CVD at the surface coverage metal conductive film then.But having, the method that laser from top to bottom hits the conductive layer conducting medium is at high temperature reacted with environmental gas easily can at high temperature be gasified easily or the inequality of being heated is splashed and caused conducting medium to lack and influence shortcoming such as contact performance.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of restorative procedure of wire break of liquid crystal display device, and this restorative procedure is repaired the broken string metal by the mode of depositing conducting layer and broken string metal electrically conducting.
For achieving the above object, the invention provides a kind of restorative procedure of wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, have second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that, its restorative procedure may further comprise the steps: step a, utilize checkout equipment to detect the position that the second conductive layer interrupt line takes place; Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone; Step c after finishing array base palte and color membrane substrates manufacturing, utilizes the laser focusing welding with the depositing conducting layer and the second conductive layer conducting.
Another technical scheme of the present invention provides a kind of restorative procedure of wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps: step a, utilize checkout equipment to detect the position that the second conductive layer interrupt line takes place; Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone; Step c surrounds with protective gas around the whole weld, laser from the conductive layer side incident of deposit with the depositing conducting layer and the second conductive layer conducting.
Another technical scheme of the present invention provides a kind of restorative procedure of wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps: step a, utilize checkout equipment to detect the position that the second conductive layer interrupt line takes place; Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone; Step c surrounds with protective gas around the whole weld, laser from the first insulation course side incident with the depositing conducting layer and the second conductive layer conducting.
Another technical scheme of the present invention provides a kind of restorative procedure of wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps: step a, utilize checkout equipment to detect the position that the second conductive layer interrupt line takes place; Step b utilizes the metal of laser fusion second conductive layer that this expansion of metal is pierced through second insulation course; Step c is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone.
The present invention is owing to adopted above-mentioned technical scheme, make it compared with prior art, have following advantage and good effect: restorative procedure of the present invention makes broken string metal and the local up depositing conducting layer electrically conducting of making in the bad back that takes place of array manufacturing process interrupt line by depositing conducting layer and destruction dielectric film, thus raising product yields.
Description of drawings
The structural representation of broken string takes place in Fig. 1 for liquid crystal indicator;
Fig. 2 is the synoptic diagram behind the first embodiment depositing conducting layer of broken wire repair method of the present invention;
Fig. 3 is the synoptic diagram of the first embodiment laser welding of broken wire repair method of the present invention;
Fig. 4 is the synoptic diagram after first embodiment of broken wire repair method of the present invention repairs;
Fig. 5 is the synoptic diagram behind the second embodiment depositing conducting layer of broken wire repair method of the present invention;
Fig. 6 is the synoptic diagram after second embodiment of broken wire repair method of the present invention repairs;
Fig. 7 for the 3rd embodiment laser welding of broken wire repair method of the present invention synoptic diagram;
Fig. 8 for the 4th embodiment laser welding of broken wire repair method of the present invention synoptic diagram;
Fig. 9 is the synoptic diagram behind the 4th embodiment depositing conducting layer of broken wire repair method of the present invention.
Embodiment
Be described in further detail below with reference to the restorative procedure of accompanying drawing wire break of liquid crystal display device of the present invention.
As Fig. 1, in liquid crystal indicator, first conductive layer 1 is positioned in the middle of first insulation course 2, has second conductive layer 3 between first insulation course 2 and second insulation course 4, be positioned at second insulation course 4 and have the 3rd conductive layer 5 on one side, but often second conductive layer 3 breaks easily, as the broken string nidus 101 of Fig. 1.By checkout equipment,, detect broken string nidus 101 as Fig. 1 as the testing apparatus PS5000 of SIMADZU company product or the GX-3 equipment of OHT company product etc.
As shown in Figure 2; the restorative procedure of embodiment 1 is by laser chemical vapor deposition (Chemical VaporDeposition; CVD) equipment is in the deposit of carrying out depositing conducting layer 102 under the protection of protective gas above to the zone of breaking; general this depositing conducting layer is a metal, and the most general with the tungsten metal.Qualified after testing flow of substrates is toward follow-up engineering.Becoming the box engineering mainly to experience following technology: the alignment film printing of array base palte side and color membrane substrates side, solidify, friction process, liquid crystal splash into and form a liquid crystal layer 103, baseplate-laminating, envelope frame adhesive curing engineering, cutting, Polarizer attaches, screen inspection process.After array base palte and color membrane substrates are finished above-mentioned technology, move to laser repairing equipment, as shown in Figure 3, utilize laser 104 to focus on welding depositing conducting layer 102 and 3 conductings of second conductive layer, thereby repair the broken string of second conductive layer 3, repair the result at last as shown in Figure 4.
As shown in Figure 5, the restorative procedure of embodiment 2 is under the protection of protective gas the deposit of depositing conducting layer 102 to be carried out in the zone of breaking by laser CVD equipment.The metallic pattern of finishing through deposit covers the broken string part, and with the broken string metal overlapping part is arranged.For preventing from the laser welding process to produce influence such as oxidation; around whole weld, surround with protective gas 105; protective gas is generally inert gas; superlaser 104 is from the conductive layer 102 side incidents of deposit; carry out welding at above-mentioned deposit conductive layer 102 with broken string metal overlapping place; thereby make depositing conducting layer 102 and 3 conductings of second conductive layer, thereby repair the broken string of second conductive layer 3, repair the result at last as shown in Figure 6.
As shown in Figure 7, the restorative procedure of embodiment 3 is under the protection of blanket gas the deposit of depositing conducting layer 102 to be carried out in the zone of breaking by laser CVD equipment.The metallic pattern of finishing through deposit covers the broken string part, and with the broken string metal overlapping part is arranged.For preventing from the laser welding process to produce influence such as oxidation; around whole weld, surround with protective gas 105; protective gas is generally inert gas; superlaser 104 is from the 2 side incidents of first insulation course; carry out welding at above-mentioned deposit conductive layer 102 with broken string metal overlapping place, thereby make depositing conducting layer 102 and 3 conductings of second conductive layer, thereby repair the broken string of second conductive layer 3; the reparation of repairing result and embodiment 2 at last comes to the same thing, as shown in Figure 6.
The restorative procedure of embodiment 4 is that metal pierces through second insulation course 4 with expansion and is exposed to second insulation course, 4 surfaces under the high temperature, as shown in Figure 8 by the metal of superlaser 104 fusings second conductive layer 3.For preventing from the laser welding process to produce influence such as oxidation, around whole weld, surround with protective gas 105, protective gas is generally inert gas.Under the protection of protective gas, the deposit of depositing conducting layer 102 is carried out in second conductive layer, 3 broken string zones by laser CVD equipment; as shown in Figure 9; the overlay area is second conductive layer, 3 broken string zone and the above-mentioned conducting regions that pierce through; pierce through by the above-mentioned deposit conductive layer 102 and second conductive layer 3 and to make deposit conductive layer 102 be communicated with up and down being connected of turning part, play the effect of repairing broken string with second conductive layer 3.
Second conductive layer 3 in the foregoing description can be data line lead or grid lead.
That more than introduces only is based on preferred embodiment of the present invention, can not limit scope of the present invention with this.Any device of the present invention or method are done replacement, the combination, discrete of step well know in the art, and the invention process step is done well know in the art being equal to change or replace and all do not exceed exposure of the present invention and protection domain.
Claims (8)
1. the restorative procedure of a wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps:
Step a utilizes checkout equipment to detect the position that the second conductive layer interrupt line takes place;
Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone;
Step c after finishing array base palte and color membrane substrates manufacturing, utilizes the laser focusing welding with the depositing conducting layer and the second conductive layer conducting.
2. the restorative procedure of a wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps:
Step a utilizes checkout equipment to detect the position that the second conductive layer interrupt line takes place;
Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone;
Step c surrounds with protective gas around the whole weld, laser from the conductive layer side incident of deposit with the depositing conducting layer and the second conductive layer conducting.
3. the restorative procedure of a wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps:
Step a utilizes checkout equipment to detect the position that the second conductive layer interrupt line takes place;
Step b is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone;
Step c surrounds with protective gas around the whole weld, laser from the first insulation course side incident with the depositing conducting layer and the second conductive layer conducting.
4. the restorative procedure of a wire break of liquid crystal display device, comprise first insulation course and second insulation course in this liquid crystal indicator, be positioned at the first middle conductive layer of first insulation course, has second conductive layer between first insulation course and second insulation course, be positioned at second insulation course and have the 3rd conductive layer on one side, it is characterized in that its restorative procedure may further comprise the steps:
Step a utilizes checkout equipment to detect the position that the second conductive layer interrupt line takes place;
Step b utilizes the metal of laser fusion second conductive layer that this expansion of metal is pierced through second insulation course;
Step c is in the deposit of carrying out depositing conducting layer under the protection of protective gas above to second conductive layer broken string zone.
5. as the restorative procedure of the described wire break of liquid crystal display device of each claim of claim 1 to 4; it is characterized in that, describedly finish by laser chemical vapor deposition equipment in the step of carrying out the deposit of depositing conducting layer under the protection of protective gas above to the zone of breaking.
6. as the restorative procedure of the described wire break of liquid crystal display device of each claim of claim 1 to 4, it is characterized in that described protective gas is an inert gas.
7. as the restorative procedure of the described wire break of liquid crystal display device of each claim of claim 1 to 4, it is characterized in that described second conductive layer is the data line lead.
8. as the restorative procedure of the described wire break of liquid crystal display device of each claim of claim 1 to 4, it is characterized in that described second conductive layer is a grid lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101706375A CN101441335A (en) | 2007-11-20 | 2007-11-20 | Method for restoring wire break of liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101706375A CN101441335A (en) | 2007-11-20 | 2007-11-20 | Method for restoring wire break of liquid crystal display device |
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| CN101441335A true CN101441335A (en) | 2009-05-27 |
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| CNA2007101706375A Pending CN101441335A (en) | 2007-11-20 | 2007-11-20 | Method for restoring wire break of liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409152A (en) * | 2016-09-26 | 2017-02-15 | 昆山工研院新型平板显示技术中心有限公司 | A metal wire, a metal wire self-repairing method and a flexible display screen |
| CN109375395A (en) * | 2018-11-20 | 2019-02-22 | 深圳市华星光电技术有限公司 | Broken wire repair method |
| CN110689818A (en) * | 2018-07-06 | 2020-01-14 | 群创光电股份有限公司 | Electronic device and method for repairing electronic device |
-
2007
- 2007-11-20 CN CNA2007101706375A patent/CN101441335A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409152A (en) * | 2016-09-26 | 2017-02-15 | 昆山工研院新型平板显示技术中心有限公司 | A metal wire, a metal wire self-repairing method and a flexible display screen |
| CN106409152B (en) * | 2016-09-26 | 2019-03-08 | 昆山工研院新型平板显示技术中心有限公司 | A kind of metal wire, metal wire selfreparing method and flexible display screen |
| CN110689818A (en) * | 2018-07-06 | 2020-01-14 | 群创光电股份有限公司 | Electronic device and method for repairing electronic device |
| CN110689818B (en) * | 2018-07-06 | 2021-10-08 | 群创光电股份有限公司 | Electronic device and method for repairing electronic device |
| CN109375395A (en) * | 2018-11-20 | 2019-02-22 | 深圳市华星光电技术有限公司 | Broken wire repair method |
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Open date: 20090527 |