CN102976611A - Prescription of cover plate glass for light touch screen - Google Patents
Prescription of cover plate glass for light touch screen Download PDFInfo
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- CN102976611A CN102976611A CN2012105000386A CN201210500038A CN102976611A CN 102976611 A CN102976611 A CN 102976611A CN 2012105000386 A CN2012105000386 A CN 2012105000386A CN 201210500038 A CN201210500038 A CN 201210500038A CN 102976611 A CN102976611 A CN 102976611A
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- Prior art keywords
- glass
- prescription
- plate glass
- touch
- cover
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Abstract
The invention discloses a prescription of a cover plate glass for a light touch screen. Experiments show that the major ingredients of the cover plate glass contain SiO2, Al2O3, Na2O, K2O and CaO, for the glass prepared according to the prescription provided by the invention, the aim of improving the coefficient of thermal expansion is realized by regulating the contents of the ingredients in the prescription, and simultaneously, improving the coefficient of thermal expansion of the glass by using the large proportion of metals containing Ba and Sr is avoided; in the prescription provided by the invention, CaO is selected instead of MgO, the MgO is not added, devitrification tendency of the glass can be lowered, the high-temperature viscosity can be lowered, melting is facilitated, and after being enhanced chemically, the glass can effectively prevent the impact and the scratch damage to the protective screen surface of the touch products, and prolong the service life of the products with touch screens.
Description
Technical field
The invention belongs to field of glass production technology, relate to a kind of cover plate and form with glass, particularly a kind of lightweight touch-screen is with the prescription of cover-plate glass, and the glass that adopts chemical enhanced method to process is especially suitable for use as the cover-plate glass of touch-screen.
Background technology
Along with the development of information technology and technique of display, the further reduction of cost, the facility that touch-screen brings to people along with, make domestic many enterprises begin touch screen technology is become interested.Touching technique and technique of display further combined with, except the tradition such as mobile phone is used, touch-control PC, intelligent appliance will become the new power of touch-screen development, middle large touch panel releases one after another.Along with the increase of product size, the weight of product has also been proposed higher requirement, wherein reduce cover plate with provide protection and become outline with the density of glass.At present, it is more and more extensive that the touch-screen applications scope has become, from control/operating system, the electronic enquiry facility of public information inquiry, the commercial use volume Cash Machine of the shop equipment of industrial use, all can see touch screen to the mobile telephone of consumer electronics, PDA, digital camera etc.What wherein be most widely used is still mobile phone.Along with people promote the demand of vision and operation ease, and technology is day by day ripe, emphasize its easy human-machine operation, the application of contact panel also comes Yu wider, no longer be confined to undersized application, size becomes greatly day by day, in order that satisfy the needs of different field, contact panel has been trend of the times.In addition, the lightweight degree of mobile equipment product is had relatively high expectations, therefore the glass cover-plate weight that is used on the mobile equipment product is also relatively light, and owing to touch-screen glass will combine with differing materials, its coefficient of expansion has also been proposed higher requirement, simultaneously, the cover-plate glass that is used for touch-screen need to pass through chemical enhanced processing, therefore strength of glass is required also to have proposed requirement.
In the prior art, most products improves the thermal expansivity of glass by add the metal contain Ba, Sr in the glass moiety, but the adding that contains Ba, Sr metal also can increase the proportion of glass simultaneously, can't satisfy the light-weighted requirement of cover-plate glass; Simultaneously, for composition and the preparation method of ultra-thin glass, patent disclosure both domestic and external different parent glass composition and preparation methods, such as CN200880016095.9, disclose a kind of chemically reinforced glass of down-drawable, its main component is the SiO of 64-68% by mole mark per-cent
2, the Al of 8-12%
2O
3, the Na of 12-16%
2O, the K of 2-5%
2O, the B of 0-3%
2O
3, the MgO of 4-6%, the CaO of 0-5%, for the cover-plate glass of mobile electronic device, it contains more K
+Ion can hinder chemical enhanced speed, reduces production efficiency and glass quality.
Summary of the invention
The present invention relates to a kind of lightweight touch-screen prescription of cover-plate glass, satisfying the market is to the light-weighted requirement of cover-plate glass, has simultaneously lower density and wider range of expansion, higher chemical tempering intensity, good anti-scratch performance and wear resisting property, can carry out chemical enhancedly, determine that through testing its main component contains SiO
2, Al
2O
3, Na
2O, K
2O, CaO, intensity and chemical resistant properties all are better than normal silicate glass, can be made into the glass flake of 0.5-1.1mm.
The present invention realizes that the technical scheme that goal of the invention adopts is, a kind of lightweight touch-screen prescription of cover-plate glass, and each component of above-mentioned glass forms by mass percentage and comprises: the SiO of 63-73%
2, the Al of 12-18%
2O
3, the CaO of 0.1-4%, the Na of 12-16%
2O, the K of 1-3%
2O.
The glass that uses the prescription described in the present invention to prepare is adjusted by the content to recipe ingredient, does not contain the larger metals of proportion such as Ba, Sr, has reached the purpose that reduces glass density; Contain CaO, can reduce the tendency towards devitrification of glass, and can reduce high temperature viscosity, be conducive to fusing, glass can improve the shock resistance and the wear resistance that touch the product screen surface effectively through after chemical enhanced, prolong the work-ing life of product, also reduced K in the recipe ingredient described in the present invention
+Ion content, behind experimental test, intensity and chemical resistance etc. all is better than simple glass, and the chemical enhanced time is short, and intensity is high, has improved chemical enhanced efficient.The present invention adopts the saltpetre fused solution as the chemical enhanced liquid of glass, and the mode by ion-exchange forms one deck compressive stress layer at glass surface, reaches the purpose of reinforcement, has improved 5-10 doubly before the strength ratio of glass is strengthened after strengthening.
The present invention is directed to the heavier defective of present touch-screen large size product, created a kind of cover-plate glass component of lightweight, can the lighter product of the quality of production; Product of the present invention has the wider coefficient of expansion, can be complementary from the product of the different coefficients of expansion; A kind of alumina silicate glass that contains aluminum oxide high rigidity glass ingredient of the invention, glass ingredient are more suitable for making it to reach high strength in chemical enhanced processing, and the present invention does not contain MgO and only contains CaO, can reduce the tendency towards devitrification of glass, and can reduce high temperature viscosity, be conducive to fusing.Glass can effectively prevent from touching the shock resistance of product protection screen surface and scratch infringement through after chemical enhanced, prolongs the work-ing life that contains the touch-screen product.
Embodiment
A kind of lightweight touch-screen prescription of cover-plate glass, each component of above-mentioned glass forms by mass percentage and comprises: the SiO of 63-73%
2, the Al of 12-18%
2O
3, the CaO of 0.1-4%, the Na of 12-16%
2O, the K of 1-3%
2O.
In the above-mentioned component, Na
2O and K
2The total mass per-cent of O is not less than 13%.
Above-mentioned SiO
2Content is preferably: 65-70%.
Above-mentioned Al
2O
3Content is preferably: 14-16%.
Above-mentioned CaO content is preferably: 0.1-3%.
Above-mentioned Na
2O content is preferably 13-15%.
Above-mentioned K
2O content is preferably: 1.2-2.4%.
Introducing maximum compositions in the glass ingredient of the present invention is SiO
2, SiO
2Be the essential composition that consists of the glass skeleton, its content is higher, more can improve chemical resistant properties and the physical strength of glass, and can reduce the density of glass, on the other hand, puies forward full-bodied tendency owing to have, so SiO
2Content is too high, increases the high temperature viscosity of glass, makes glass be difficult to fusing.SiO of the present invention
2Content is between the 63-73%, preferably between the 65-70%, adjusts its content and obtains suitable melt temperature and liquidus temperature, is fit to the moulding of glass.
Al
2O
3Be the neccessary composition that improves chemical durability of glass, can suppress phase-splitting, improve chemical enhanced characteristic, chemical enhanced process is had promoter action.The present invention introduces the Al of 12-18%
2O
3, it is not obvious to be lower than this range effect, is higher than this scope liquidus temperature and significantly raises, and is unfavorable for moulding, needs to adjust the viscosity that suitable content obtains being fit to moulding.Preferred content is 14-16%.
Na
2O mainly be can be in surface layer of glass and ion exchange liquid K
+Ion exchange makes glass reach the purpose of reinforcement, can also play the effect of fluxing in addition.Work as Na
2O and Al
2O
3Mol ratio near 1 o'clock, chemical enhanced most effective, the strength of glass after the reinforcement is also the highest; When ratio is greater than or less than 1, unfavorable to chemical enhanced process.So the present invention chooses the Na of 13-15%
2O, more preferably 12 ~ 13%.
K
2O mainly plays fluxing action, and introduces simultaneously Na
2O and K
2O, by mixed alkali effect, the meltbility that helps to reduce viscosity and improve glass is if introduce too much K
2O can hinder ion-exchange speed, so select to introduce the K of 1-3%
2O.Basic metal also can effectively be adjusted the thermal expansivity of glass, Na in addition
2O and K
2The total mass per-cent of O is not less than 13%.
Alkaline-earth metal such as CaO, MgO, SrO, BaO, these alkaline-earth metal provide various performances for glass, and these performances are all very important for melting, clarification, moulding and final application.Because it is great to contain the ratio of Sr and Ba, do not meet environmental protection and lighting requirement, so do not adopt.The present invention selects CaO, is network modifying oxide, and Main Function is stablizer in glass, namely increases chemical stability and the physical strength of glass, and can reduce high temperature viscosity, and adjustable material all in one piece is conducive to moulding; But when content is higher, the tendency towards devitrification of glass is increased, and easily make the glass embrittlement.So preferably below 4%, be more preferably 0.1 ~ 3%.
Invention is when implementing, and the main preparation process of specimen is: weighing-mixing-melting-stirring clarification-homogenizing-moulding-annealing-processing-performance test.
Concrete steps: with several oxide compounds according to the weight percent weighing after, fully mix, get again the 200g compound and pour in the platinum-rhodium crucible, at 1550-1650 ℃ of lower insulation 5-10h; Use the platinum rod to stir in the melting process, help to discharge bubble and also makes glass metal clarification homogenizing, then with the glass metal moulding on stainless steel plate that melts, anneal under 600 ℃ of temperature is processed after being down to room temperature, carries out the physicochemical property test.The physicochemical property test comprises density, thermal expansivity, liquidus temperature, strain point, annealing point, softening temperature, chemical tempering etc.
15 groups of embodiment proportionings and the performance test results are provided in table 1, table 2 and the table 3 altogether.
Table 1:
Table 2:
Table 3:
Claims (7)
1. a lightweight touch-screen is with the prescription of cover-plate glass, and it is characterized in that: each component of described glass forms by mass percentage and comprises: the SiO of 63-73%
2, the Al of 12-18%
2O
3, the CaO of 0.1-4%, the Na of 12-16%
2O, the K of 1-3%
2O.
2. a kind of lightweight touch-screen according to claim 1 is characterized in that with the prescription of cover-plate glass: in the described component, and Na
2O and K
2The total mass per-cent of O is not less than 13%.
3. a kind of lightweight touch-screen according to claim 1 is characterized in that: described SiO with the prescription of cover-plate glass
2Content is preferably: 65-70%.
4. a kind of lightweight touch-screen according to claim 1 is characterized in that: described Al with the prescription of cover-plate glass
2O
3Content is preferably: 14-16%.
5. a kind of lightweight touch-screen according to claim 1 is with the prescription of cover-plate glass, and it is characterized in that: described CaO content is preferably: 0.1-3%.
6. a kind of lightweight touch-screen according to claim 1 is characterized in that: described Na with the prescription of cover-plate glass
2O content is preferably 13-15%.
7. a kind of lightweight touch-screen according to claim 1 is characterized in that: described K with the prescription of cover-plate glass
2O content is preferably: 1.2-2.4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105000386A CN102976611A (en) | 2012-11-30 | 2012-11-30 | Prescription of cover plate glass for light touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105000386A CN102976611A (en) | 2012-11-30 | 2012-11-30 | Prescription of cover plate glass for light touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102976611A true CN102976611A (en) | 2013-03-20 |
Family
ID=47851023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105000386A Pending CN102976611A (en) | 2012-11-30 | 2012-11-30 | Prescription of cover plate glass for light touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102976611A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803602A (en) * | 2014-12-26 | 2015-07-29 | 芜湖东旭光电装备技术有限公司 | High-alkali high-alumina silicate glass suitable for chemical enhanced treatment |
| CN106277754A (en) * | 2016-07-08 | 2017-01-04 | 广安奥海通讯电子科技有限公司 | A kind of electronic equipment screen glass and preparation method thereof |
| CN112919804A (en) * | 2021-02-18 | 2021-06-08 | 陈士汤 | Preparation process of glass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772470A (en) * | 2007-08-03 | 2010-07-07 | 日本电气硝子株式会社 | Hardened glass substrate and method for manufacturing the same |
| CN102015566A (en) * | 2008-06-27 | 2011-04-13 | 日本电气硝子株式会社 | Toughened glass and method for producing the same |
| WO2012033161A1 (en) * | 2010-09-09 | 2012-03-15 | 日本電気硝子株式会社 | Cover glass for packaging semiconductor material, and process for production thereof |
-
2012
- 2012-11-30 CN CN2012105000386A patent/CN102976611A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772470A (en) * | 2007-08-03 | 2010-07-07 | 日本电气硝子株式会社 | Hardened glass substrate and method for manufacturing the same |
| CN102015566A (en) * | 2008-06-27 | 2011-04-13 | 日本电气硝子株式会社 | Toughened glass and method for producing the same |
| WO2012033161A1 (en) * | 2010-09-09 | 2012-03-15 | 日本電気硝子株式会社 | Cover glass for packaging semiconductor material, and process for production thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803602A (en) * | 2014-12-26 | 2015-07-29 | 芜湖东旭光电装备技术有限公司 | High-alkali high-alumina silicate glass suitable for chemical enhanced treatment |
| CN106277754A (en) * | 2016-07-08 | 2017-01-04 | 广安奥海通讯电子科技有限公司 | A kind of electronic equipment screen glass and preparation method thereof |
| CN112919804A (en) * | 2021-02-18 | 2021-06-08 | 陈士汤 | Preparation process of glass |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20130320 |