CN106630658B - Glass substrate of liquid crystal display thinning technique pretreatment compositions - Google Patents
Glass substrate of liquid crystal display thinning technique pretreatment compositions Download PDFInfo
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- CN106630658B CN106630658B CN201611268687.2A CN201611268687A CN106630658B CN 106630658 B CN106630658 B CN 106630658B CN 201611268687 A CN201611268687 A CN 201611268687A CN 106630658 B CN106630658 B CN 106630658B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
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- Surface Treatment Of Glass (AREA)
Abstract
Glass substrate of liquid crystal display thinning technique pretreatment compositions, it is composed of the following components：The hydrochloric acid (HCl) of mass percentage content 5-8%, the hydrofluoric acid (HF) of nitric acid (HCl) mass percentage content 2%~5% of mass percentage content 5-8%, the Tween-80 of mass percentage content 1~2%, Acritamer 940, the hydroxypropyl methyl cellulose (HPMC) of mass percent 1-2% and the water of surplus of mass percentage content 0.2-0.4%.
Description
Technical field
The present invention relates to etch pretreated composition for glass substrate of liquid crystal display.
Background technique
In Ultrathin liquid crystal display screen production, need to carry out thinning processing, the prior art to the glass substrate for completing encapsulation
In the hydrofluoric acid etch that generally uses carry out thinning, often generate part and cross erosion pit, need to carry out at prolonged polishing again
Reason, it is serious to even result in entire glass substrate and scrap.With ultra-thin TFT (Thin Film Transistor, film crystal
Pipe) demand is gradually increased, and this problem is more and more prominent in liquid crystal display production process, and it is existing to solve this problem
The pretreatment fluid prepared based on the concentrated sulfuric acid is used to be located in advance before thinning processing to the glass substrate of liquid crystal display in technology
Reason, due to joined a large amount of concentrated sulfuric acid, the waste liquid generated after pretreatment process is difficult to be handled.Therefore it provides a kind of new
Glass substrate of liquid crystal display thinning pretreatment product, reduces disposal of pollutants on the basis of improving treatment effect, becomes existing
There is urgent problem to be solved in technology.
Summary of the invention
To solve aforementioned technical problem, the present invention provides glass substrate of liquid crystal display thinning technique pretreatment compositions
And its treatment process, by optimization formulation and treatment process, successfully realize avoid concentrated sulfuric acid etc. cause seriously pollute and
It is difficult to the use of raw material handled.
The present invention provides glass substrate of liquid crystal display thinning technique pretreatment compositions, it is characterised in that the combination
Object is composed of the following components：
The hydrochloric acid (HCl) of mass percentage content 5-8%, nitric acid (HCl) quality percentage of mass percentage content 5-8%
Than the hydrofluoric acid (HF) of content 2%~5%, the Tween-80 of mass percentage content 1~2%, mass percentage content 0.2-
0.4% Acritamer 940, the hydroxypropyl methyl cellulose (HPMC) of mass percent 1-2% and the water of surplus.
The glass substrate of liquid crystal display thinning technique pretreatment compositions, it is characterised in that match in the following manner
System,
1) recipe quantity hydrochloric acid, hydrofluoric acid and nitric acid are mixed, and suitable quantity of water dilution are added,
2) recipe quantity HPMC is dissolved in the water of recipe quantity 30~40%, the Tween-80 of recipe quantity is added,
3) recipe quantity Acritamer 940 is dissolved in suitable quantity of water；
4) in the mixed solution of step 2), the mixed liquor for being slowly added to step 1) is successively added with vigorous stirring, so
The mixed liquor of step 3) is added again afterwards, is stirred after supplying the water of surplus to uniformly mixed.
Under study for action it has been surprisingly found that the Acritamer 940 and Tween 80 that pharmacy, Cosmetic Manufacture will be chiefly used in originally
And HPMC with merge mixing diluted acid is added after can be used for the pretreatment to glass substrate of liquid crystal display thinning technique, and can
The pit on subsequent hydrofluoric acid etch thinning technique metacoxal plate surface is significantly reduced, so as to avoid dense sulphur is used in the prior art
Acid pretreating agent as main component insecurity when in use and waste liquid are difficult to the problem of handling.Combination provided by the invention
Object has good pretreating effect to the face CF of TFT glass substrate and the face TFT.And further study show that, the present invention uses
Pretreating process, preferably temperature range and temperature change program.It can be generated with surface preparation liquid cooperation of the invention
Good pretreating effect.
Specific embodiment
Glass substrate of liquid crystal display thinning technique pretreatment compositions provided by the invention, are prepared in the following manner,
1) recipe quantity hydrochloric acid, hydrofluoric acid and nitric acid are mixed, and suitable quantity of water dilution are added,
2) recipe quantity HPMC is dissolved in the water of recipe quantity 30~40%, the Tween-80 of recipe quantity is added,
3) recipe quantity Acritamer 940 is dissolved in suitable quantity of water；
4) in the mixed solution of step 2), the mixed liquor for being slowly added to step 1) is successively added with vigorous stirring, so
The mixed liquor for retelling step 3) afterwards is added, and stirs after supplying the water of surplus to uniformly mixed.
Examples 1 to 4 formula see the table below (mass percent wt%)
It is as follows that the pretreated method of thinning is carried out to the composition that Examples 1 to 4 obtains
The glass panel for TFT display screen for the same batch that raw material are Corning Incorporated's production is taken, with a thickness of
1.000mm, having a size of 730mm × 920mm.It is used etching and polissoir be respectively Dongguan letter village etching machine and Hunan forever
Create polishing machine.UV glue is first permeated in CF surface glass substrate and TFT surface glass substrate surrounding gap, then complete with UV illumination curing
At the encapsulation of glass substrate, the glass substrate that encapsulation is completed is used for subsequent pretreatment and thinning process
Preprocess method is
1) glass substrate of liquid crystal display thinning technique pretreatment compositions 1000L (hereinafter referred to as pretreating agent)
2) pretreating agent is squeezed into etching machine acid tank and controls pretreating agent temperature at 50 DEG C ± 2 DEG C, using as experiment
5 glass substrates (number is I~V) for completing encapsulation of group sample are immersed in pretreating agent, remove glass surface bilayer 20
Micron；Then by near 35 DEG C ± 2 DEG C of pretreating agent temperature, continue to be dipped to 60 microns of bilayer of removal glass surface, locating in advance
Bubbling stirring is carried out to pretreating agent when reason.
3)：Glass surface is cleaned with clear water, is entered back under conditions of surface wettability in hydrofluoric acid etch liquid, concentration is
9mol/L, temperature are controlled in 30 DEG C of conditions, are thinned to 0.5mm thickness.
It is directly entered after separately taking 5 glass substrate (number i~v) clear water for completing encapsulation to clean dense in hydrofluoric acid etch liquid
Degree is 9mol/L, and temperature is controlled in 30 DEG C of conditions, is thinned to 0.5mm thickness, and as a control group
It is created on polishing machine 1300-3# forever at same, pressure 60g/cm2, lower disk rotating speed 50, upper disk rotating speed 40, grinding pad
For global LP-66 model, polishing powder is happy 101 model of scholar of moral, and absorption layer is FUJIBO BPE211 model, the every grinding 1 of experimental group
Minute examines one-time surface effect, and the every grinding of control group is examined for 5 minutes once shows effect, examines no pit after recording grinding
Accumulative milling time it is as shown in table 1
The experimental results showed that carrying out pretreated glass substrate using pretreatment fluid provided by the invention is carrying out thinning
The pit on panel can be substantially reduced after process.
Claims (2)
1. glass substrate of liquid crystal display thinning technique pretreatment compositions, it is characterised in that the composition is by following components group
At：
Nitric acid (HCl) mass percent of the hydrochloric acid (HCl) of mass percentage content 5-8%, mass percentage content 5-8% contains
The hydrofluoric acid (HF) of amount 2%~5%, the Tween-80 of mass percentage content 1~2%, mass percentage content 0.2-0.4%
Acritamer 940, the hydroxypropyl methyl cellulose (HPMC) of mass percent 1-2% and the water of surplus.
2. glass substrate of liquid crystal display thinning technique pretreatment compositions as described in claim 1, it is characterised in that with such as
Lower method is prepared,
1) recipe quantity hydrochloric acid, hydrofluoric acid and nitric acid are mixed, and suitable quantity of water dilution are added,
2) recipe quantity HPMC is dissolved in the water of recipe quantity 30~40%, the Tween-80 of recipe quantity is added,
3) recipe quantity Acritamer 940 is dissolved in suitable quantity of water；
4) in the mixed solution of step 2), the mixed liquor for being slowly added to step 1) is successively added with vigorous stirring, then again
The mixed liquor of step 3) is added, is stirred after supplying the water of surplus to uniformly mixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611268687.2A CN106630658B (en) | 2016-12-31 | 2016-12-31 | Glass substrate of liquid crystal display thinning technique pretreatment compositions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268687.2A CN106630658B (en) | 2016-12-31 | 2016-12-31 | Glass substrate of liquid crystal display thinning technique pretreatment compositions |
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| Publication Number | Publication Date |
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| CN106630658A CN106630658A (en) | 2017-05-10 |
| CN106630658B true CN106630658B (en) | 2018-11-20 |
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| CN107793038A (en) * | 2017-10-24 | 2018-03-13 | 天津美泰真空技术有限公司 | A kind of glass substrate thinning technique pretreatment fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IL152497A0 (en) * | 2000-04-28 | 2003-05-29 | Merck Patent Gmbh | Etching pastes for inorganic surfaces |
| KR100860367B1 (en) * | 2006-08-21 | 2008-09-25 | 제일모직주식회사 | Wet etching solution having high selectivity for silicon oxide |
| SG176129A1 (en) * | 2009-05-21 | 2011-12-29 | Stella Chemifa Corp | Fine-processing agent and fine-processing method |
| CN102432185B (en) * | 2011-09-30 | 2014-09-10 | 郑州恒昊玻璃技术有限公司 | Etching liquid and etching process for anti-dazzle glass product |
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Effective date of registration: 20181012 Address after: 225400 west side of Dai Wang Road, Taixing hi tech Industrial Development Zone, Taizhou, Jiangsu Applicant after: Jiangsu Lai De Fu Auto Parts Co.,Ltd. Address before: 528051 No. 4, Lane 4, Nan Bian street, Chancheng, Zhangcha, Foshan, Guangdong. Applicant before: Pang Qiqi |
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Effective date of registration: 20230103 Address after: 225400 west side of Dai Wang Road, Chengdong high tech Industrial Park, Taixing, Taizhou, Jiangsu, China Patentee after: Jiangsu Zhiguang Venture Capital Co.,Ltd. Address before: 225400 west side of Dai Wang Road, Taixing hi tech Industrial Development Zone, Taizhou, Jiangsu Patentee before: Jiangsu Lai De Fu Auto Parts Co.,Ltd. |