The brief introduction, application and processing technology of anti glare glass (Ag glass) were discussed
Author:Zhang Yan Time:2021-06-07 10:14 Browse(389)
Due to the continuous evolution of touch products and the increasing use of outdoor products, the demand for anti reflection has increased (as shown in Figure 1). The application of glass is not only in the display part of TFT-LCD, TP and other electronic products, but also in the application of new glass, In recent months, CG (cover glass) glass processing industry has launched the so-called anti reflective or anti glare glass, which is called Ag glass (as shown in Figure 2), In 2013, more than five manufacturers exhibited Ag glass products at Shenzhen full touch exhibition.
the production principle of Ag glass is special processing on the surface of the original glass.

The brief introduction, application and processing technology of anti glare glass (Ag glass) were discussed

the processing methods are divided into physical and chemical methods, and the glass processing can be single-sided or double-sided, The processed glass is characterized by making the reflective surface of the original glass weaker, and the reflective surface (the glass surface is slightly uneven).
compared with the original glass, the processed glass has a lower reflectance.
the light reflectance will be significantly reduced, and the display will show a more clear and transparent visual effect. In the early years, the schottu has published xenation & # 8482; cover Ag (anti glare) (as shown in Fig. 3).
the processed glass is characterized by making the reflective surface of the original glass weaker# O( u& A4 v$ }9 t5 B% T8 ^' c4 \- x1 n0 @+ I# g4 N+ z% M( Q- }4 rFigure 1. ITRI of Taiwan province puts forward the added value and demand of TP products in the future(Ref 1: Taiwan Central Industrial Research Institute - development trend of touch panel and materials). H4 @ 1 Z #] 2 [1 V; H]( d+ w& [; e6 |' [/ ~* r; M6 X! O0 X+ ~' Q6 Q( UFig. 2 Schematic diagram of anti glare principle of Ag (anti glass) glass / M: E1 M5 C4 O.
1V' z/ F(reference data: provided by GPT GSD product application development team)/ }+ _ 9 s- ]8 t4 o4 M6 c2 }6 b% K/ p4 i5 R6 M5 L  ]+ ^, ^  |* h: X) ~! G& s* {9 G+ q1 NFig. 3. Schottu xenation &; cover Ag (anti glare) 8 Y0 B8 V1 V7 D & H | 5 I'I0 W: E7 [0 i5 H! @ 0 d 2. Anti glare glass product specifications and measurement methods / M (L + J. P) ^ 2 A6 y - [# d5h0e) H general anti glare glass (Ag glass) has its specific requirements in different product applications. If it is used in OGS touch products, the haze effect (haze;%) of the glass should not be too high, which will affect the penetration performance of LCM. If the anti glare glass is used in other electronic touch products, such as coating decoration (non visual products), the haze effect (haze;%) of the glass should not be too high, However, if it is a high-resolution mobile phone product,
the fixed concave and convex points produced in the process of anti glare glass will focus to form a sparkle issue after LCM light incidence, which will be quite obvious when viewed by naked eyes, so it is not suitable for the use of high-order display products.
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V( ]/ [5 ]7 a3 i3 `* `; _ 6 T) x( e5 j- _ Figure 4. Classification of anti glare glass products* D  [6 o7 Y8 L2 a0 p% X4 @,B (reference data: provided by GPT GSD product application development team). C + V5 ^ & {'^; H-Y/Z4 Q7 J '@! | - E9 i9 C $u after the anti glare glass process, in terms of product yield and specification control, Macro inspection: the product part will confirm whether the anti glare surface contains visually detectable stripes, pinholes, spots and similar defects.
(2) micro inspection: the product measurement part will confirm whether the haze, gloss, RA, transmission and other four different values are within the set specifications.
the definition of these four measurement values is as follows: / q-d # A3 q. \; c( I3 p+ c4 L' @Haze: when a parallel beam is incident on a medium, the beam will change its direction due to the inhomogeneity of the optical properties of the material, and the resulting part of the disordered light is called scattered light, According to the international regulations, the ratio of the scattered light flux to the transmitted light flux which passes through the sample and deviates from the direction of the incident light is expressed as a percentage.
in the process of testing the haze and transmittance of the sample.
the incident light flux (T1), the transmitted light flux (T2), the instrument scattered light flux (T3) must be measured, The scattering luminous flux (T4) of the sample is calculated as follows: transmittance: TT = T2 / T1 × 100%; haze = T4 / TT × 100% (T3 = 0).
A; O9 [^ & A% n V: Q #_   T6 R / M% U5 L2 e N8 NBWhen a smooth surface material is exposed to visible light, it will produce directional specular reflection. The result of specular reflection makes the surface of the material glossy, which is called specular gloss, and its reflecting ability is called specular gloss.
unit = gloss unit (GU) 6 Z # [$Y; T1} $H8 L; U7 J) q" ?) r- I# p.
O% e- ^9 cG= K×F2/F1=100×ρ/ρ3(Ref 4)2 p9 C  h$ f0 @. Q& ]2 J4 S! _ $G + F9 Q; |} G: glossiness value of sample' q! B6 V3 t# _1 _ K3 C / B / O9 X! G # i7 W1 n & {F1: luminous flux directionally incident on the sample surface. 2h2 O7 R '} #' (B / M7~- B' g2 Q* t5 d' E3 J& PF2: the luminous flux reflected from the surface of the specimen directionally received. 0 m # e # R% C * J2 I * B$ q7 v/ e; S, [$ _ , rk: undetermined constant, k = 100 / ρ s8 Q5 \+ }2 \* F& R2 N$ r9 N/P ['@) O + L% Q' ~ 5I "}, V 2 C ρ s: reflectivity of standard plate; i' W6 n+ H9 o8 P/ D(? 5 J2 a U0 h Ρ: reflectivity of the sample_ : Q# z% \2 n,j. V. T8, s, DC. Average roughness of the center line (RA): if a section of measuring length L is cut from the roughness curve of the machined surface, and the center line of the roughness depth within the length is taken as the X axis, and the vertical line of the center line is taken as the Y axis, Then the roughness curve can be reflexed with the center line in the y = f (x) table.
(Ref 5) and then the area covered by all the reflexed curves on the center line can be calculated.
divide by the measured length.
the value obtained is in μ M.
that is, the average roughness value of the center line within the measured length of the machining surface (as shown in Figure 5)) I6 a% G. n: }' N) T, s$ q# w/ A, Z! V+ z9 _ * `$ @! Z "s: U% d ﹣ u Figure 5. Average roughness of RA center line& K' [9 z$ n* g! `7 I* C" o9 f4 E& r* J4 i' T$ H; f  _ + mTransmittance: usually expressed as a percentage: T = (I / IO) × 100 beer's Law (as shown in Figure 6), also known as beer Lambert law, is the basic law of optics.
when light penetrates the sample solution.
the absorbance (a) of light is proportional to the absorption coefficient (α), optical path length (L) and concentration (c): a = α LC, where α is the absorption coefficient, Or absorption coefficient, also known as extinction coefficient,k)
If cm is used as the unit of light path length B.
and M is used as the unit of concentration C, and the absorption coefficient is m-25px-1, then the absorption coefficient at this time can be called molar absorptivity, The symbol is represented by ε.
Moore's absorption coefficient ε is frequently used.
therefore, the common expression method of beer's law is: a = ε BC.
when a beam of light irradiates a sample solution, part of the light will be absorbed by the sample solution, and the rest of the light will penetrate the sample solution, that is, the original light intensity IO, the penetrating light intensity changes to IL, The penetration of this time t (transmission).
'f) \ - D * ~ 5}$ b5 m2 e( _ 7 Z9 X; n! ]$ K; ?1 t0 M8 X3 U" I! y2 GFig. 6. Schematic diagram of absorption path of beer's law 3 ~ 3 N & C% n'q; F! E& l+ J0 I$ A' X0 L1 l* a.
]/ y. H3、 Production methods of anti glare glass" m  R% V: }* [  ?# W# D7 C9 J / T9 I / P + T) U anti glare glass was widely used in the transmission industry in the early days, such as architectural atomized glass and floor decoration (as shown in Figure 7). Traditional atomized glass can be divided into physical and chemical methods, each of which has its own advantages and disadvantages. However, due to the loose specification of atomized glass products in traditional industry, the traditional atomized glass has its own advantages and disadvantages, So the production mode is simple and rough.
2 W # J7 E & L (g # S & B5_9 D1 Y4 Z ﹣ M2 x (G6] / r2 q) a% \ -? The traditional manufacturing method of atomized glass is as follows:+ q" Y1 n% I' ~5 M) J' l# q7 ?" ?.
m' _ /L7 e (a) physical production mode: sandblasting process, good uniformity, but low production capacity, no environmental wastewater pollution' b# }9 ^3 U: F& {3 @(B) Chemical production mode: traditional frosting process.
the production capacity of frosting is larger, and the evenness and handle are better.
the chemical production mode is the traditional frosting process) d2 k% c.
}6 _ 2 R& M+ m8 n5 P, Z/ ~* n* |' ^% E! E# B+ `- n5 g$ _ 2 C Figure 7. Application of anti glare glass in traditional industries) Y$ ^) ^/ }8 H, H1 B0 u- [5 v" t9 |5 A  gThe manufacturing method of anti glare glass for touch products. If the early 3C products wanted to have anti glare function, they would mainly be pasted with anti glare film made of PET material. However, considering the rising awareness of environmental protection and the EU's gradually strict regulations on green products packaging materials, the added value of cover glass and touch product Ag now derives, It is an urgent need to integrate the anti glare glass manufacturing process into OGS and CG glass. The Ag product made by sputtering has the best uniformity and penetration (as shown in Figure 8). However, considering the cost of equipment and consumables, general touch or cover plate owners will not produce it in this way. Therefore, chemical etching mass production of anti glare glass is the optimized production mode of anti glare glass, which has the advantage of high uniformity, In addition, only Ag process of chemical etching can meet the specifications of current products on the market, and it also has high wear-resistant testing ability. The supporting automation equipment can greatly improve the production capacity and high yield.
in addition, Ag process of chemical etching can meet the requirements of current products on the market/ S8 d* x( x9 }) O" z7 l& a. C1 J3 }0 _ &Many building glass manufacturers in mainland China also use the traditional frosting process and glass thinning process.
the main purpose is to provide the demand for Ag glass for TV cover plate. However, many manufacturers rely too much on manual labor due to insufficient equipment conditions, inaccurate temperature control, poor quality stability and low yield rate, which makes the OEM price of Ag unable to compare with foreign Ag manufacturers, Therefore, how to effectively improve the yield of Ag is an urgent problem for all ag glass suppliers.
; @ 0 G7 Y "I-I * C6 t (d'b (o) 2  N( G8 B! [7 N' M( Y1 J1 g! c( P+ {/ `% T0 {. [. d& y7 o.
X* ~5 oFigure 8. Comparison of processing methods of anti glare glass2 h# T. m* K; o6 q. p* F, `; x1 _ Conclusion (C $I & G% B /]'b: P # e! A & Q% m: r& h. C7 Y8 d% Q- I  ZThe application of anti glare glass began to be widely used in the cover glass (CG) of TV and monitor in 2013, especially in Shenzhen full touch exhibition in 2013. At present, TV CG and OGS products have been introduced and used. Next, the mouse pad in the center of Nb products, Smart TV remote control cover, car touch control cover, industrial control system interface, mobile phone screen and monitor screen will all use this production technology. Therefore, how to effectively control product cost and increase added value,L: O # W + T '~ 4 N (P3 [& Y $l)]3 b7 X% d.
~/ s; E+ }8 r3 }) xAt present, the TFT-LCD glass thinning equipment and OGS secondary strengthening equipment of hongsu technology have been successfully sold to the first-line TFT-LCD and touch control manufacturers in mainland China and Taiwan, which have been deeply recognized and affirmed by the manufacturers. The safety, stability and accuracy of the equipment have always been the basic demands of hongsu technology products.
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Q0? 2 W $R1 [& D3] *? '}. W in the production and manufacturing of anti glare glass, hongsu technology can provide the whole plant manufacturing planning, including the construction of all production equipment, manufacturing materials and testing instruments for Ag manufacturing, as well as the establishment of atomization process and chemical polishing process parameters, which can effectively stabilize the process and improve the production capacity, The proposed process technology is not the traditional frosting paste plus chemical thinning process used in mainland China, but the chemical formula of Ag is the Ag roughing solution and photochemical solution developed by Tianhong Technology (Taiwan semiconductor professional etchant manufacturer). Its effect and yield can be greatly improved. The most important point is the way to protect the glass on one side, Hongsu technology has applied for one-sided protection patents for anti glare glass process in mainland China, Taiwan, South Korea and other places. The patents can effectively reduce production costs and greatly enhance manufacturing capacity. Ag products with high gloss specifications such as vehicle mounted gloss 110 (GU) and other specific product specifications can be produced with high yield. If you need to know more about anti glare glass process technology, Welcome to contact manager Chen Yuzheng of GPT GSD mainland division.
thank you. }2 c8 u+ h: N0 ~' i4 M: [1 \+ T9 Z; F$ {6 O! kAbout the author: 7 T & 5 A & J $|1. Dennis Lin, graduated from the Institute of biotechnology, National Tsinghua University, TaiwanHe once worked in the new product department of Youda optoelectronics.
he has the experience of asva (FFS) products and TFT-LCD thinning process, and now works in Grand Plastics Technology Corporation (GPTC), mainly responsible for the development of glass thinning, strengthening process technology, anti glare glass process technology, and other wet cleaning and etching process technology.
he has been working in the new product department of Youda optoelectronics'W5 L2 e + G7 S1 P! C0 H - @'O $| 2) f9 c5 E# j9 A0 ?.
V! J) L/ f/ O) }. F$ S* d' x: f5 ]. t4 z; P# W( V1 U% e% M6 G &? 8 @ "[4D5 ` 6e oberton nanotechnology is a manufacturer and supplier of Ag and AR spraying materials and equipment. At present, Ag and AR panels are in great demand and are a blowout market_ * O: P. X  {+ PThe company provides a complete set of mature equipment, materials and processing scheme 7 ~! K7n0a1 [5c9r * w]. T & \ + J & C.
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A & R1 [% ^ w Tel: 13352666965 (Liu Sheng) 7 B7 ~; Y5 C1 y6 L. U N:~' i' `3 y3 x& Y2 I6 J6 M% o' K0 U2 v4 f* j6 p; v/ Z- B! m9 S8 T "t0 a #'3 V * W Tel: 13352666965 (Mr. Liu) + e) T6 E. ^ 0 y \, N2 X & H?QQ:24809984634 r3 ^0 {3 [+ Y' c( B$ d/ yEmail: m8 U5 t+ p* o: J6 N) }! a& T% r5 X% O$ h( {' Z4 V9 \: q$ d8 M% V& fWelcome: OEM manufacturers, terminal manufacturers, equipment manufacturers, agents call to discuss cooperation;,? 0 X & \)] 6 a $aThe company provides a complete set of mature equipment, materials, construction line, processing program [Z $} 9s. C - Z9} 8k3u% F3 \, _ 4 G4 Z) Z0 kCustomers are welcome to contact and assist in proofing free of charge.
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