CN103700560A - Method for repairing bright spot defect of PDP (Plasma Display Panel) display screen by using laser light - Google Patents
Method for repairing bright spot defect of PDP (Plasma Display Panel) display screen by using laser light Download PDFInfo
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- CN103700560A CN103700560A CN201310727988.7A CN201310727988A CN103700560A CN 103700560 A CN103700560 A CN 103700560A CN 201310727988 A CN201310727988 A CN 201310727988A CN 103700560 A CN103700560 A CN 103700560A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The invention discloses a method for repairing the bright spot defect of a PDP (Plasma Display Panel) display screen by using laser light. In the method, a PDP lighting checking machine is used, and is provided with a movable laser unit; the PDP lighting checking machine is used for automatically conveying the PDP display screen and checking the bright spot defect of the PDP display screen in a lighting way; a PDP panel is provided with an ITO (Indium Tin Oxide) conducting layer. The method is simple and practical, and only the laser unit needs to be additionally arranged on the PDP lighting checking machine and is designed to be movable. A laser is used for repairing the bright spot defect of a plasma display device. The laser emits laser light of specific wavelength, speed and power, and ITO is burnt out in cooperation with a matched repair area pattern without influencing a glass substrate and the overall display of a plasma television.
Description
Technical field
The present invention relates to plasma display and manufacture recovery technique field, relate in particular to the method that laser is bright to PDP display screen, fleck defect is repaired of utilizing.
Background technology
Plasma panel (PDP) has the advantages such as color is true to nature, color effect good, visual angle is wide, long-life, simultaneously its fast response time, without hangover, without harmful radiation, be more conducive to eye healthy, be one of flat panel display of current main flow.Yet in the manufacture process of plasma panel, owing to can not understanding appearance point defect in display under the uncontrollable factors such as fabrication error, foreign substance pollution, unit exception with avoiding.The bad two large classes that are generally divided into of point defect, bright some property point defect and dim spot point defect, in the majority with bright some property point defect in actual production, and human eye is more responsive to the sense organ of bright point.In the higher shipment rank of quality requirements, generally allow dim spot to exist, but do not allow the existence of bright point.In the reparation of display point defect, normally used method is exactly by certain reparation means, to make it to become dim spot bright.
If can need to use a kind of effective bad restorative procedure for bad above, the bad reparation of point defect (bright point) that finished product plasma display apparatus is occurred, make it to become dim spot, can improve the quality of products, can reduce defect rate, and promote the susceptibility of client to product, there is huge economic implications.
Summary of the invention
For addressing the above problem, the present invention proposes a kind of method that laser is bright to PDP display screen, fleck defect is repaired of utilizing.Described method has been utilized the PDP inspection machine of lighting a lamp, and described PDP lights a lamp on inspection machine mobilizable laser cell is also set;
Described method comprises the steps:
Step 1:PDP display screen transports the PDP inspection machine of lighting a lamp by material flow line, by the PDP inspection machine of lighting a lamp, PDP display screen is checked, selects and has the PDP display screen substandard products bright, bright spot is bad;
Step 2: bright, bright spot bad position to PDP display screen substandard products mark;
Step 3: operating personnel move laser cell to the position near PDP display screen;
Step 4: laser cell utilizes zoom magnifying glass to search out the bad some position that certain need to be repaired;
Step 5: the bad some region that upper step is found is divided into some continuous reparation districts;
Step 6: laser cell Emission Lasers, burn successively in order the ITO that each repairs district.
Step 7: repeating step 4～6, until all bad point of this PDP display screen is repaired.
Further, before the step 5 of described method, several times are amplified in the bad some region that laser cell also utilizes zoom magnifying glass that the upper needs that search out are repaired.
Further, in step 5, the reparation district at two ends, deviates from BUS electrode near ITO Gap on one side.
Further, in step 5, the bad some band of position is divided into three continuous reparation districts.
Further, described three continuous reparation districts are rectangle.
Further, before step 7, the PDP display screen being repaired need to be switched to FW/R/G/B picture in preceding step, whether successfully to confirm repairing, as repaired, unsuccessfully repeat 6, until this bad point is thoroughly repaired.
Further, bad point is repaired successful validation criteria and is: if there is not flicker in 10S through bad some position of laser repairing, can not be judged to be and repair successfully.
Further, the laser frequency that described laser cell sends is 15HZ.
Further, the laser energy that described laser cell sends is less than 1MJ.
Further, described PDP lights a lamp on inspection machine and is also provided with crossbeam, and laser cell is connected on crossbeam by elevating mechanism.
Beneficial effect of the present invention is:
The present invention is simple and practical, only need on PDP lights a lamp inspection machine, increase laser cell, and make laser cell movable.Use laser plasma display part is bright, bright spot is bad repairs.Described laser sends the laser of specific wavelength, speed, power, and supporting reparation district figure removes to burn ITO, can't glass substrate not had any impact, and the integral body that does not affect plasm TV shows.
The method of the invention may extend to the reparation that display device that all use ito transparent electrodes conduction makes carries out when there is bright, bright spot.
Embodiment
Technical conceive of the present invention is after PDP display screen completes, to light a lamp while checking, bright, the bright spot found to be repaired, and makes it to transfer to dim spot, thereby does not affect display effect, improves screen grade.
Below technical scheme of the present invention is elaborated.
The technical method that the present invention adopts is to increase a set of laser cell and elevating mechanism on existing PDP lights a lamp the hardware foundation of inspection machine.
The described PDP inspection machine of lighting a lamp is automatically to transmit PDP panel, and counter plate carries out and light a lamp, and carries out the automation equipment of photoelectric parameter and optical parametric Inspection.Use the PDP inspection machine of lighting a lamp, before PDP panel lighting powers on, the electrode by PDP panel on monitor station clip and PDP panel electrode utilize visual manner to carry out position alignment.
The present invention arranges the crossbeam of a steel construction above PDP lighting machine, and laser cell is connected on this crossbeam by elevating mechanism, can move up and down.Described laser cell is provided with zoom magnifying glass, can realize 2 times of zooms, 5 times of zooms, 10 times of zooms.After PDP panel lighting powers on and lights, general first by using 2 times of zoom magnifying glasses to search out the position of defect point, then, by being that 10 times of zoom positions amplify aligning to the region of defect point, Emission Lasers carries out defect point reparation.5 times of zooms can be used as required.
In design of the present invention, also utilized emphatically the important electric conducting material using in plasma manufacture process: ITO(Indium Tin Oxides, tin indium oxide) performance.ITO belongs to nano indium tin metal oxide, has good conductivity and the transparency, can cut off harmful electron radiation, ultraviolet ray and far infrared etc.Therefore, indium tin oxide is sprayed in glass, plastics and electronic display conventionally, as transparent conductive film, reduces harmful electron radiation and ultraviolet ray, infrared ray simultaneously.Show by experiment, use laser can burn ITO under certain conditions.
The present invention utilizes the performance of ITO, and bad reparation of point defect (bright, bright spot) that finished product plasma display apparatus is occurred, makes it to become dim spot.Because the region of dim spot is very little with respect to whole screen, therefore, electron radiation, ultraviolet ray, the infrared ray of burning the whole TV that the ITO in bright some region causes are negligible to human injury's increase.
The job step of invention is concluded to explanation below.
Step 1:PDP display screen transports the PDP inspection machine of lighting a lamp by material flow line, by the PDP inspection machine of lighting a lamp, PDP display screen is checked, selects and has the PDP display screen substandard products bright, bright spot is bad;
Step 2: operator marks bright, the bright spot bad position of PDP display screen substandard products;
Step 3: operating personnel move laser cell to the position near PDP display screen;
Step 4: laser cell utilizes zoom magnifying glass to search out the bad point that certain need to be repaired;
2 times of zooms of general using are found, and this zoom multiple can effectively amplify the bad some region that needs reparation, and the while is unlikely to again excessive and causes misalignment, handled easily personnel to be located fast,
Step 5: laser cell utilizes zoom magnifying glass to amplify the bad some region of finding in step 4;
This step, for preferred steps, can be selected as required, can select 10 times of zoom magnifying glasses.
Step 6: bad some region is divided into some continuous reparation districts;
Preferably, bad some region can be divided into three and repair district.Described three reparation districts can be three continuous rectangles, according to suitable seeking near arrangement from top to bottom.
It should be noted that, the reparation district at two ends should, deviate from BUS electrode, to avoid lesion electrode near ITO Gap on one side.Use laser generator to excise ITO, destroy the discharging structure of discharge cell, thereby reach repairing effect.
Step 7: laser cell Emission Lasers, burn successively in order the ITO that each repairs district.
Preferably, laser cell Emission Lasers, by from direction lower or from bottom to up, burns ITO successively according to repairing district's order.Can be more convenient because operating personnel, when mobile laser cell, take to move up and down.
Described sharp light frequency is 15HZ, and energy is less than 1MJ.This parameter is selected effectively to ensure the ITO that burns this position, is not damaged glass substrate simultaneously.
Step 8: after having repaired, the PDP display screen being repaired is switched to FW/R/G/B picture repairing effect is confirmed.If repair unsuccessful otherwise repeat step 7, until this bad point defect is repaired.
Repairing successful validation criteria is: if do not occur in 10S through bad some position of laser repairing, glimmer to be judged to be and repair successfully.
Step 9: repeating step 4～8, until all bad point of this display screen is repaired.
Beneficial effect of the present invention is:
The present invention is simple and practical, only need on PDP lights a lamp inspection machine, increase laser cell, and make laser cell movable.Use laser plasma display part is bright, bright spot is bad repairs.Described laser sends the laser of specific wavelength, speed, power, and supporting reparation district figure removes to burn ITO, can't glass substrate not had any impact, and the integral body that does not affect plasm TV shows.
The method of the invention may extend to the reparation that display device that all use ito transparent electrodes conduction makes carries out when there is bright, bright spot.
Claims (10)
1. utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, utilized the PDP inspection machine of lighting a lamp, described PDP lights a lamp on inspection machine mobilizable laser cell is also set;
Described method comprises the steps:
Step 1:PDP display screen transports the PDP inspection machine of lighting a lamp by material flow line, by the PDP inspection machine of lighting a lamp, PDP display screen is checked, selects and has the PDP display screen substandard products bright, bright spot is bad;
Step 2: bright, bright spot bad position to PDP display screen substandard products mark;
Step 3: operating personnel move laser cell to the position near PDP display screen;
Step 4: laser cell utilizes zoom magnifying glass to search out the bad some position that certain need to be repaired;
Step 5: the bad some region that upper step is found is divided into some continuous reparation districts;
Step 6: laser cell Emission Lasers, burn successively in order the ITO that each repairs district.
Step 7: repeating step 4～6, until all bad point of this PDP display screen is repaired.
2. as claimed in claim 1ly utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, before the step 5 of described method, several times are amplified in the bad some region that laser cell also utilizes zoom magnifying glass that the upper needs that search out are repaired.
3. as claimed in claim 1ly utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, in step 5, the reparation district at two ends, deviates from BUS electrode near ITO Gap on one side.
4. as claimed in claim 1ly utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, in step 5, the bad some band of position is divided into three continuous reparation districts.
5. as claimed in claim 4ly utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, described three continuous reparation districts are rectangle.
6. as described in any one in claim 1～5, utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, before step 7, the PDP display screen being repaired in preceding step need to be switched to FW/R/G/B picture, whether successfully to confirm repairing, as repaired, unsuccessfully repeat 6, until this bad point is thoroughly repaired.
7. utilize as described in claim 6 the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, bad point is repaired successful validation criteria and is: if do not occur in 10S through bad some position of laser repairing, glimmer to be judged to be and repair successfully.
8. as described in any one in claim 1～5,7, utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, the laser frequency that described laser cell sends is 15HZ.
9. as described in any one in claim 1～5,7, utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, the laser energy that described laser cell sends is less than 1MJ.
10. as claimed in claim 1ly utilize the method that laser is bright to PDP display screen, fleck defect is repaired, it is characterized in that, described PDP lights a lamp on inspection machine and is also provided with crossbeam, and laser cell is connected on crossbeam by elevating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310727988.7A CN103700560A (en) | 2013-12-26 | 2013-12-26 | Method for repairing bright spot defect of PDP (Plasma Display Panel) display screen by using laser light |
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| CN201310727988.7A CN103700560A (en) | 2013-12-26 | 2013-12-26 | Method for repairing bright spot defect of PDP (Plasma Display Panel) display screen by using laser light |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698635A (en) * | 2015-03-31 | 2015-06-10 | 合肥鑫晟光电科技有限公司 | Composite liquid crystal panel repair equipment |
| CN104978916A (en) * | 2014-04-03 | 2015-10-14 | 四川虹视显示技术有限公司 | OLED (Organic Light Emitting Diode) panel display defect restoration method |
| CN111292300A (en) * | 2020-01-21 | 2020-06-16 | 京东方科技集团股份有限公司 | Method and apparatus for detecting bright spot failure of display panel, and readable storage medium |
| CN112540471A (en) * | 2020-12-04 | 2021-03-23 | Tcl华星光电技术有限公司 | Display panel, lighting test method and lighting test device |
| CN114265219A (en) * | 2021-12-24 | 2022-04-01 | 苏州东山精密制造股份有限公司 | Laser repairing method for CELL bright spot of full-lamination product touch screen |
| CN115036349A (en) * | 2022-05-26 | 2022-09-09 | 厦门天马显示科技有限公司 | Display panel, display panel repairing method and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104978916A (en) * | 2014-04-03 | 2015-10-14 | 四川虹视显示技术有限公司 | OLED (Organic Light Emitting Diode) panel display defect restoration method |
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| CN112540471B (en) * | 2020-12-04 | 2021-11-23 | Tcl华星光电技术有限公司 | Display panel, lighting test method and lighting test device |
| CN114265219A (en) * | 2021-12-24 | 2022-04-01 | 苏州东山精密制造股份有限公司 | Laser repairing method for CELL bright spot of full-lamination product touch screen |
| CN115036349A (en) * | 2022-05-26 | 2022-09-09 | 厦门天马显示科技有限公司 | Display panel, display panel repairing method and display device |
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Application publication date: 20140402 |