CN106746700B - Glass substrate of liquid crystal display thinning technique pretreating agent - Google Patents
Glass substrate of liquid crystal display thinning technique pretreating agent Download PDFInfo
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- CN106746700B CN106746700B CN201611268676.4A CN201611268676A CN106746700B CN 106746700 B CN106746700 B CN 106746700B CN 201611268676 A CN201611268676 A CN 201611268676A CN 106746700 B CN106746700 B CN 106746700B
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- glass substrate
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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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Liquid Crystal (AREA)
Abstract
Glass substrate of liquid crystal display thinning technique pretreating agent, it is composed of the following components: the hydrochloric acid (HCl) of mass percentage content 8~12%, the hydrofluoric acid (HF) of mass percentage content 2%~5%, the acetic acid of mass percentage content 0.3%~0.5%, the hydrogen peroxide of mass ratio 0.5%~1%, the hydroxypropyl methyl cellulose (HPMC) of mass percentage content 1~2%, the chitosan of mass percentage content 1~2% and the water of surplus.
Description
Technical field
The present invention relates to etch pretreated composition for glass substrate of liquid crystal display.
Background technique
When production Ultrathin liquid crystal display screen needs to carry out thinning processing to display screen glass substrate, and currently generally use
Hydrofluoric acid etch thinning method after thinning processing glass substrate show often to will appear part and cross the pit that erosion generates, need
Substrate is shown again to carry out prolonged polishing treatment, production efficiency has been seriously affected, has improved processing cost.It is thin in order to reduce
Change processing occur pit, need thinning handle before the glass substrate of liquid crystal display is pre-processed, existing pretreating agent with
A small amount of hydrofluoric acid is added based on the concentrated sulfuric acid, hydrochloric acid acid is formulated, although glass after certain reduction thinning may be implemented
The effect of substrate pit, but joined a large amount of concentrated sulfuric acid in pretreated mixed acid, the waste liquid generated after pretreatment process is difficult
In being handled.Therefore a kind of new glass substrate of liquid crystal display thinning pretreatment product is provided, treatment effect is being improved
On the basis of reduce disposal of pollutants, become urgent problem to be solved in the prior art.
Summary of the invention
To solve aforementioned technical problem, the present invention provides glass substrate of liquid crystal display thinning technique pretreating agent and its
Treatment process successfully realizes by optimizing the prescription and treatment process of pretreating agent and avoids concentrated sulfuric acid etc. and cause seriously
It pollutes and is difficult to the use of raw material handled.
The present invention provides glass substrate of liquid crystal display thinning technique pretreating agents, it is characterised in that the pretreating agent
It is composed of the following components:
The hydrochloric acid (HCl) of mass percentage content 8~12%, the hydrofluoric acid (HF) of mass percentage content 2%~5%,
The acetic acid of mass percentage content 0.3%~0.5%, the hydrogen peroxide of mass ratio 0.5%~1%, mass percentage content 1~
2% hydroxypropyl methyl cellulose (HPMC), the chitosan of mass percentage content 1~2% and the water of surplus.
The glass substrate of liquid crystal display thinning technique pretreating agent, it is characterised in that it prepares in the following manner,
1) by recipe quantity hydrochloric acid, hydrofluoric acid mix, and be added suitable quantity of water dilution after, the hydrogen peroxide of recipe quantity is added,
2) hydroxypropyl methyl cellulose of recipe quantity is dissolved in suitable quantity of water to being completely dissolved；
3) by recipe quantity peracetic acid formulation as in 1% solution, addition recipe quantity chitosan simultaneously dissolves；
3) mixed liquor obtained by step 1), 2) is respectively added slowly in the mixed liquor of step 3), after the water for supplying surplus
It stirs to uniformly mixed.
The glass substrate of liquid crystal display is preferably TFT glass substrate
Under study for action it was found that being located in advance using pretreating agent provided by the invention to glass substrate of liquid crystal display
The pit that thinning technique metacoxal plate surface can be significantly reduced when reason, greatly reduces again the time of grinding process, thus guaranteeing
While pretreating effect, avoid in the prior art using concentrated sulfuric acid pretreating agent as main component when in use not
Safety and waste liquid are difficult to the problem of handling.And by prescription screening it was found that could be produced using preferred ingredient and recipe quantity
Raw preferable pretreating effect, especially HPMC, chitosan, hydrogen peroxide and proportion, above-mentioned three kinds of groups be divided into can be realized it is good
The key component of good pretreating effect lacks any of which or or changes its proportion and can all significantly affect pretreating effect.
Specific embodiment
Provided by the present invention for glass substrate of liquid crystal display thinning technique pretreating agent, prepare in the following manner,
1) by recipe quantity hydrochloric acid, hydrofluoric acid mix, and be added suitable quantity of water dilution after, the hydrogen peroxide of recipe quantity is added,
2) hydroxypropyl methyl cellulose of recipe quantity is dissolved in suitable quantity of water to being completely dissolved；
3) by recipe quantity peracetic acid formulation as in 1% solution, addition recipe quantity chitosan simultaneously dissolves；
3) mixed liquor obtained by step 1), 2) is respectively added slowly in the mixed liquor of step 3), after the water for supplying surplus
It stirs to uniformly mixed.
Examples 1 to 4 formula see the table below (mass percent wt%)
The chitosan used in the present invention is the product that meets GB 29941-2013
The hydroxypropyl methyl cellulose used in the present invention is Anhui Shanhe Medicinal Subsidiary Material Co., Ltd.'s production, specification
For SHE50.
It is as follows that the pretreated method of thinning is carried out using the product that Examples 1 to 4 obtains
Taking raw material is glass panel for TFT display screen of the identical producer of plate nitre AN100 with batch, thickness
For 1.000mm, having a size of 730mm × 920mm.Used etching and polissoir are respectively Dongguan letter village etching machine and Hunan
Polishing machine is created forever.UV glue is first permeated in CF surface glass substrate and TFT surface glass substrate surrounding gap, then with UV illumination curing
The glass substrate that encapsulation is completed is used for subsequent pretreatment and thinning process by the encapsulation for completing glass substrate
Preprocess method is
1) glass substrate of liquid crystal display thinning technique pretreating agent 1000L (hereinafter referred to as pretreating agent) is prepared
2) pretreating agent is squeezed into etching machine acid tank and controls pretreating agent temperature at 40 DEG C~45 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 60
Micron；Bubbling stirring is carried out to pretreating agent in pretreatment.
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 2 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 pretreating agent 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 pretreating agent, it is characterised in that the pretreating agent is by following components group
At:
The hydrochloric acid (HCl) of mass percentage content 8~12%, the hydrofluoric acid (HF) of mass percentage content 2%~5%, quality
The acetic acid of degree 0.3%~0.5%, the hydrogen peroxide of mass ratio 0.5%~1%, mass percentage content 1~2%
Hydroxypropyl methyl cellulose (HPMC), the chitosan of mass percentage content 1~2% and the water of surplus.
2. glass substrate of liquid crystal display thinning technique pretreating agent as described in claim 1, it is characterised in that with such as lower section
Method is prepared,
1) by recipe quantity hydrochloric acid, hydrofluoric acid mix, and be added suitable quantity of water dilution after, the hydrogen peroxide of recipe quantity is added,
2) hydroxypropyl methyl cellulose of recipe quantity is dissolved in suitable quantity of water to being completely dissolved；
3) by recipe quantity peracetic acid formulation as in 1% solution, addition recipe quantity chitosan simultaneously dissolves；
3) mixed liquor obtained by step 1), 2) is respectively added slowly in the mixed liquor of step 3), is stirred after supplying the water of surplus
Extremely it is uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268676.4A CN106746700B (en) | 2016-12-31 | 2016-12-31 | Glass substrate of liquid crystal display thinning technique pretreating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268676.4A CN106746700B (en) | 2016-12-31 | 2016-12-31 | Glass substrate of liquid crystal display thinning technique pretreating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106746700A CN106746700A (en) | 2017-05-31 |
| CN106746700B true CN106746700B (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611268676.4A Active CN106746700B (en) | 2016-12-31 | 2016-12-31 | Glass substrate of liquid crystal display thinning technique pretreating agent |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4520075B2 (en) * | 2001-06-25 | 2010-08-04 | 博 三輪 | Surface processing of glass products with sandblasting |
| KR100815856B1 (en) * | 2007-08-17 | 2008-03-24 | (주)이그잭스 | Echant composition for glass of flat panel display |
| CN102786230A (en) * | 2011-05-16 | 2012-11-21 | 鸿富锦精密工业（深圳）有限公司 | Glass-plastic complex and preparation method thereof |
| 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 |
| CN103508676A (en) * | 2013-07-24 | 2014-01-15 | 芜湖长信科技股份有限公司 | Method for avoiding defect in LCD glass substrate thinning process and acid solution configuration method |
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- 2016-12-31 CN CN201611268676.4A patent/CN106746700B/en active Active
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Effective date of registration: 20181116 Address after: 402460 Rongsheng Road, Banqiao Industrial Park, Rongchang District, Chongqing, China Applicant after: Chongqing Siyuxing Electronic Materials Co., Ltd. Address before: 528051 No. 4, Lane 4, Nan Bian street, Chancheng, Zhangcha, Foshan, Guangdong. Applicant before: Pang Qiqi |
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