Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Modeling of Sand Blasting Process for Anti-Glare Surface Treatment of Display Glass

디스플레이 유리의 눈부심 방지 표면처리를 위한 샌드 블래스팅 공정의 모형화

  • Min, Chul Hong (Central Research Institute, SYNOPEX Inc.) ;
  • Kim, Tae Seon (School of Information, Communications and Electronics Engineering, Catholic University of Korea)
  • 민철홍 ((주) 시노펙스) ;
  • 김태선 (가톨릭대학교 정보통신전자공학부)
  • Received : 2018.10.15
  • Accepted : 2018.10.29
  • Published : 2018.10.31
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Abstract

Currently hydrofluoric acid (HF) based glass etch method is widely used for anti-glare (AG) surface treatment since it can effectively alleviate the specular reflection problem with relatively low processing cost. However, due to the environmental regulation and safety problem, it is essential to develop alternative technology to replace this method. For this, in this paper, we propose sand blasting based AG surface treatment method for display glass. To characterize the sand blasting process, surface roughness, haze, surface durability, and flatness are considered as process outputs and central composite design (CCD) method and response surface model (RSM) method are applied to model each process output. Models for surface roughness and haze showed 96.44% and 97.24% of R-squared values, respectively and they can be applied to optimize AG surface treatment process for various haze level requirements of display industries.

Keywords

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Fig. 1 A simple expression of sand blaster for AG surface treatment.

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Fig. 2 Effects of height and speed on surface roughness.

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Fig. 3 Residual plot for haze.

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Fig. 4 Main effect plot for haze.

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Fig. 5 Interaction plot for haze.

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Fig. 6 Main effect plot for surface durability.

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Fig. 7 Interaction plot for durability.

Table 1. Range of input parameters for sand blasting.

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Table 2. Response parameters for characterization of AG surface treatment.

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Table 3. Estimated regression coefficients for roughness (Ra).

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