CN105710070A - Cleaning method for liquid crystal displayers - Google Patents
Cleaning method for liquid crystal displayers Download PDFInfo
- Publication number
- CN105710070A CN105710070A CN201410729136.6A CN201410729136A CN105710070A CN 105710070 A CN105710070 A CN 105710070A CN 201410729136 A CN201410729136 A CN 201410729136A CN 105710070 A CN105710070 A CN 105710070A
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- CN
- China
- Prior art keywords
- liquid crystal
- crystal display
- display screen
- deionized water
- rinse bath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 71
- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000008367 deionised water Substances 0.000 claims abstract description 30
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 30
- 238000006056 electrooxidation reaction Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- 230000009514 concussion Effects 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 4
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000002738 chelating agent Substances 0.000 claims description 2
- 238000005108 dry cleaning Methods 0.000 claims description 2
- 235000011194 food seasoning agent Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000002351 wastewater Substances 0.000 abstract description 3
- 239000012459 cleaning agent Substances 0.000 abstract 4
- 239000005416 organic matter Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 phenyl hexamethylene Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 210000000232 gallbladder Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cleaning method for liquid crystal displayers. According to the cleaning method, residues of organic matter and cleaning agents can be eliminated, the hidden danger of a water-based cleaning mode to the environment can be eliminated and the requirements of environmental protection are met. To clean the liquid crystal displayers, a liquid crystal displayer cleaning agent, an electrochemical oxidation solution and deionized water are added successively, heated to 55 DEG C, and used for conducting cleaning in cooperation with the ultrasonic waves for 2-4 minutes; then cleaning is conducted by combination of the deionized water and ultrasonic waves; and washing and drying are conducted. Due to the fact that cleaning is conducted with the cleaning agent and the combination of the electrochemical oxidation solution and the ultrasonic waves successively, it can be avoided that a large amount of waste water containing cleaning agents is generated, the hidden danger of the water-based cleaning mode to the environment is eliminated, and the requirements of environmental protection are met.
Description
Technical field
The present invention relates to liquid crystal display screen field, especially relate to a kind of liquid crystal display screen cleaning method.
Background technology
Liquid crystal is the material that a class has property, and it keeps that crystal is distinctive in a liquid state within the specific limits can the feature of ordered arrangement at three dimensions.The liquid crystal material used on liquid crystal display screen is the organic compound with class formations such as gallbladder act of violence alcohol vinegar, aminobphenyl, phenyl hexamethylene a heatable brick bed.After liquid crystal material is encapsulated into two panels electro-conductive glass centre, always remaining unnecessary liquid crystal material at its periphery, if do not washed the performance that will affect liquid crystal display screen, time serious, even corrosion electrode goes between, and causes complete machine to scrap.Therefore, in the production process of liquid crystal display screen, cleaning performance directly affects reliability and the yield rate of liquid crystal display screen.
Liquid crystal panel is mainly clipped an interlayer being made up of Polarizer, liquid crystal layer and colored worry mating plate by two pieces without soda-lime glass and is formed.Polarizer, colored filter determine how much light can be passed through and generate the light of which kind of color.Liquid crystal is filled between two planes perfect in workmanship composition liquid crystal layer, and the two plane is shown many grooves, and the groove in independent plane is all parallel, but the groove in the parallel plane of the two is but mutually perpendicular.Be exactly briefly the groove in plane below it is the words of longitudinal arrangement, then plane above is exactly transversely arranged.
The aqua type abluent used at LCD production industry in the world at present mainly adds penetrating agent, surfactant and other auxiliary agents in water and is carried out, utilize that penetrating agent is wet to the ravine of greasy dirt, emulsifying and peptizaiton, add surfactant and other auxiliary agent assosting effects, cleaning suitable in various greasy dirts, on environment without impact, to human body non-hazardous, nonflammable.Cleaning for liquid crystal, can add in water and liquid crystal material is had good solvability, and the good surfactant of penetrating power, ravine humectant, water-soluble agents so that the liquid crystal washed down can be dissolved in cleanout fluid preferably, it is emulsified by a surfactant, thus departing from surface to be cleaned.But its shortcoming is that blind hole cleaning is more difficult, and cleanout fluid is not recyclable, and cleaning equipment time investment is bigger.More seriously cause the unprocessed direct discharge of the substantial amounts of waste water containing chemical active agent and dirt, seriously contaminated environment, it is necessary to increase sewage treatment facility.
Summary of the invention
The invention aims to overcome weak point of the prior art, it is provided that one can eliminate Organic substance and abluent residual, eliminates the environmental protection hidden danger of aqueous-base cleaning, meets the cleaning method of the liquid crystal display screen of environmental requirement.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of liquid crystal display screen cleaning method, comprises the following steps:
Being arranged by liquid crystal display screen and in rinse bath, two cell walls of described rinse bath be respectively arranged with a groove, the edge of liquid crystal display screen inserts in groove, and rinse bath is divided into upper and lower two parts by described liquid crystal display screen；
In rinse bath, throw in cleanout fluid, and by the heating temperatures of cleanout fluid to 55 DEG C, soak 2～4 minutes；
Bleed off cleanout fluid, in rinse bath, then add electrochemical oxidation liquid, and by the heating temperatures of electrochemical oxidation liquid to 55 DEG C, soak 2～4 minutes；
Bleed off electrochemical oxidation liquid, in rinse bath, then add deionized water, and by the heating temperatures of deionized water liquid to 55 DEG C, soak 2～4 minutes；
Utilizing concussion generating means to produce concussion makes the deionized water in rinse bath carry out concussion 2～4 minutes；
Bleed off deionized water, in rinse bath, then add new deionized water again, control the deionized water on liquid crystal display screen upper strata and the deionized water of liquid crystal display screen lower floor in rinse bath and wash away 2～4 minutes according to different directions；
Dry cleaning complete liquid crystal display screen；
Described cleanout fluid is made up of following component in mass ratio: amine base 8～12%, penetrating agent 0.5～5%, ionic surface active agent 0.5～5%, metal ion chelation agent 0.3～4%, the deionized water of surplus.
In technique scheme, two surface configurations of described liquid crystal display screen have parallel groove, and the groove in one of them face is longitudinally disposed, and the groove in another face is horizontally set.
In technique scheme, it is consistent with the groove direction on liquid crystal display screen surface that the deionized water in described step (6) washes away direction.
In technique scheme, the drying mode of described liquid crystal display screen is hot-air seasoning or is infrared baking.
In technique scheme, described electrochemical oxidation liquid is to adopt diamond film electrode as anode, the Strong oxdiative solution that electrochemical oxidation ammonium sulfate generates.
In technique scheme, described rocking equipment is ultrasonic generator.
Compared with prior art, the invention have the advantages that
In the liquid crystal display screen cleaning method of the present invention, after using liquid crystal display screen abluent to clean, adopt the Strong oxdiative pole bath cleans that diamond film anode pole electrolysis ammonium sulfate generates, the oxidizing component of this electrolyte is saturated hydrogen peroxide, dissolved ozone, effectively organics removal and abluent can remain, not only increase the removal effect of organic pollution, it is often more important that it can be avoided that produce a large amount of waste water containing abluent, eliminate the environmental protection hidden danger of aqueous-base cleaning, it is possible to meet environmental requirement.
The liquid crystal display screen abluent that the cleaning method of the liquid crystal display screen of the present invention adopts does not contain only the conventional constituents such as penetrating agent, activating agent, possibly together with metal ion integrated agent, it is possible to remove the metal ion remaining in liquid crystal display screen surface and crack, reach better cleaning performance.
The fluting direction of groove in conjunction with the groove on liquid crystal display screen surface, is carried out ultrasonic vibration and washes away, it is possible to significantly more efficient flushing remains in the metal fillings in groove and organic dirt by the cleaning method of the present invention.
The cleaning method technique of the present invention is simple, easy to operate.
Detailed description of the invention
Different proportionings is carried out, it is possible to obtain different cleanout fluid, abluent consisting of by mass percentage: hydroxyethylethylene diamine 8%, penetrating agent 0.5%, surfactant 0.5%, chelating agen 1%, the deionized water of surplus according to technical scheme.
Abluent consisting of by mass percentage: triethanolamine 10%, penetrating agent 5%, surfactant 0.5%, chelating agen 5%, the deionized water of surplus.
Abluent consisting of by mass percentage: hydroxyethylethylene diamine 4%, triethanolamine 6%, penetrating agent 3%, surfactant 0.5%, chelating agen 4%, the deionized water of surplus.
Any of the above-described a kind of cleanout fluid is poured in rinse bath, the rinse bath of the present invention is divided into upper and lower two parts by liquid crystal display screen, two cell walls on rinse bath same level direction offer groove, liquid crystal display screen is inserted in groove, rinse bath just can be divided into upper and lower two parts.
Some liquid crystal display screens can be cleaned by the present invention simultaneously simultaneously, and described rinse bath designs according to certain size, is sequentially inserted in groove by liquid crystal display screen, certain liquid crystal display screen towards also must be consistent.
Because the parallel groove that groove is different directions on the two of liquid crystal display screen surfaces, so preferably must be held in rinse bath towards unanimously at unidirectional groove.
After installing liquid crystal display screen, in rinse bath, just inject cleanout fluid, and by the heating temperatures of cleanout fluid to 55 DEG C, soaking 2～4 minutes, in this process, cleaning water flows along the groove on liquid crystal display screen surface, rising along with cleaning temperature so that the residue being adsorbed on liquid crystal display screen surface progressively loosens.
To falling cleanout fluid, in rinse bath, inject electrochemical oxidation liquid, and by the heating temperatures of electrochemical oxidation liquid to 55 DEG C, soak 2～4 minutes；Electrochemical oxidation liquid is to adopt diamond film electrode as anode, and the Strong oxdiative solution that electrochemical oxidation ammonium sulfate generates, containing substantial amounts of hydroxyl radical free radical in solution so that in oxidation cleaning process, will not introduce metal ion, the surface of injury liquid crystal display screen.
Bleed off electrochemical oxidation liquid, in rinse bath, then add deionized water, and by the heating temperatures of deionized water liquid to 55 DEG C, soak 2～4 minutes；Utilize ultrasonic vibration apparatus that deionized water is vibrated after immersion, utilize the dirt that vibration principle makes to be attached to liquid crystal display screen surface thoroughly to depart from liquid crystal display screen.
Bleed off deionized water, then in rinse bath, add new deionized water again, this time, in the process adding deionized water, utilize ultrasonic vibration apparatus that deionized water is vibrated, and pressurize along liquid crystal display screen surface grooves direction, liquid crystal display screen is washed away, two surfaces of liquid crystal display screen adopt different directions water inlet to wash away, the dirt being attached to liquid crystal display screen surface is washed completely, because adopting and groove is equidirectional washes away, even if so having the dirt of residual without being retained in groove.
Through the liquid crystal display screen that above-mentioned cleaning method obtains, through observation by light microscope, being absent from organic pollution, cleaning effect is good, on 10 inch chip, particle diameter more than the particle of O.1 micron less than 5.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any new feature disclosed in this manual or any new combination, and the step of the arbitrary new method disclosed or process or any new combination.
Claims (6)
1. a liquid crystal display screen cleaning method, it is characterised in that comprise the following steps:
Being arranged by liquid crystal display screen and in rinse bath, two cell walls of described rinse bath be respectively arranged with a groove, the edge of liquid crystal display screen inserts in groove, and rinse bath is divided into upper and lower two parts by described liquid crystal display screen；
In rinse bath, throw in cleanout fluid, and by the heating temperatures of cleanout fluid to 55 DEG C, soak 2～4 minutes；
Bleed off cleanout fluid, in rinse bath, then add electrochemical oxidation liquid, and by the heating temperatures of electrochemical oxidation liquid to 55 DEG C, soak 2～4 minutes；
Bleed off electrochemical oxidation liquid, in rinse bath, then add deionized water, and by the heating temperatures of deionized water liquid to 55 DEG C, soak 2～4 minutes；
Utilizing concussion generating means to produce concussion makes the deionized water in rinse bath carry out concussion 2～4 minutes；
Bleed off deionized water, in rinse bath, then add new deionized water again, control the deionized water on liquid crystal display screen upper strata and the deionized water of liquid crystal display screen lower floor in rinse bath and wash away according to different directions under ul-trasonic irradiation 2～4 minutes；
Dry cleaning complete liquid crystal display screen；
Described cleanout fluid is made up of following component in mass ratio: amine base 8～12%, penetrating agent 0.5～5%, ionic surface active agent 0.5～5%, metal ion chelation agent 0.3～4%, the deionized water of surplus.
2. a kind of liquid crystal display screen cleaning method according to claim 1, it is characterised in that two surface configurations of described liquid crystal display screen have parallel groove, and the groove in one of them face is longitudinally disposed, and the groove in another face is horizontally set.
3. a kind of liquid crystal display screen cleaning method according to claim 1 and 2, it is characterised in that it is consistent with the groove direction on liquid crystal display screen surface that the deionized water in described step (6) washes away direction.
4. a kind of liquid crystal display screen cleaning method according to claim 1, it is characterised in that the drying mode of described liquid crystal display screen is hot-air seasoning or is infrared baking.
5. a kind of liquid crystal display screen cleaning method according to claim 1, it is characterised in that described electrochemical oxidation liquid is to adopt diamond film electrode as anode, the Strong oxdiative solution that electrochemical oxidation ammonium sulfate generates.
6. a kind of liquid crystal display screen cleaning method according to claim 1, it is characterised in that described rocking equipment is ultrasonic generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729136.6A CN105710070A (en) | 2014-12-05 | 2014-12-05 | Cleaning method for liquid crystal displayers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729136.6A CN105710070A (en) | 2014-12-05 | 2014-12-05 | Cleaning method for liquid crystal displayers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105710070A true CN105710070A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410729136.6A Pending CN105710070A (en) | 2014-12-05 | 2014-12-05 | Cleaning method for liquid crystal displayers |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378334A (en) * | 2016-11-04 | 2017-02-08 | 中国科学院上海光学精密机械研究所 | Ultrasonic washing method for precise optical element |
| CN107185902A (en) * | 2017-05-20 | 2017-09-22 | 合肥市惠科精密模具有限公司 | A kind of high-efficiency washing method of TFT LCD liquid crystal displays |
| CN107309211A (en) * | 2017-06-20 | 2017-11-03 | 合肥市惠科精密模具有限公司 | A kind of liquid crystal display cleaning fluid and cleaning method |
| CN110643441A (en) * | 2019-09-29 | 2020-01-03 | 毛林才 | Screen surface cleaning process for liquid crystal screen production |
| CN112827883A (en) * | 2021-04-01 | 2021-05-25 | 王丽香 | Intelligent welding device for steel plate |
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| CN1519060A (en) * | 2003-01-21 | 2004-08-11 | 友达光电股份有限公司 | Method for cleaning silicon surface and method for manufacturing thin film transistor using the same |
| CN101345189A (en) * | 2007-07-12 | 2009-01-14 | 株式会社瑞萨科技 | Substrate cleaning method and cleaning device |
| CN101879509A (en) * | 2010-07-21 | 2010-11-10 | 河北工业大学 | LCD screen cleaning method |
| CN102601074A (en) * | 2012-03-19 | 2012-07-25 | 深圳市华星光电技术有限公司 | Method for cleaning TFT-LCD (thin film transistor liquid crystal display) glass substrate |
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2014
- 2014-12-05 CN CN201410729136.6A patent/CN105710070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1519060A (en) * | 2003-01-21 | 2004-08-11 | 友达光电股份有限公司 | Method for cleaning silicon surface and method for manufacturing thin film transistor using the same |
| CN101345189A (en) * | 2007-07-12 | 2009-01-14 | 株式会社瑞萨科技 | Substrate cleaning method and cleaning device |
| CN101879509A (en) * | 2010-07-21 | 2010-11-10 | 河北工业大学 | LCD screen cleaning method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378334A (en) * | 2016-11-04 | 2017-02-08 | 中国科学院上海光学精密机械研究所 | Ultrasonic washing method for precise optical element |
| CN107185902A (en) * | 2017-05-20 | 2017-09-22 | 合肥市惠科精密模具有限公司 | A kind of high-efficiency washing method of TFT LCD liquid crystal displays |
| CN107309211A (en) * | 2017-06-20 | 2017-11-03 | 合肥市惠科精密模具有限公司 | A kind of liquid crystal display cleaning fluid and cleaning method |
| CN110643441A (en) * | 2019-09-29 | 2020-01-03 | 毛林才 | Screen surface cleaning process for liquid crystal screen production |
| CN112827883A (en) * | 2021-04-01 | 2021-05-25 | 王丽香 | Intelligent welding device for steel plate |
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