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http://dx.doi.org/10.17662/ksdim.2019.15.4.063

A Novel OLED Inspection Process Method with Simultaneous Measurement for Standard and Deposition Pattern  

Kwak, Byeongho (리스광시스템)
Cheoi, Kyungjoo (충북대학교 소프트웨어학과)
Publication Information
Journal of Korea Society of Digital Industry and Information Management / v.15, no.4, 2019 , pp. 63-70 More about this Journal
Abstract
The subject of the simultaneous measuring system of base pattern and deposition pattern is a new research topic on a defect inspection of OLED. In this paper, we propose a new OLED inspection method that simultaneously measures standard and deposition pattern images. This method reduces unnecessary processes and tac time during OLED inspection. For an additional reduction of the tac time during pattern measurement, the ROI was configured to measure only in the designated ROI area instead of measuring the entire area of an image. During the ROI set-up, the value of effective deposition pattern area is included so that if the deposition pattern is out of the ROI zone, it would be treated as a defect before measuring the size and center point of the pattern. As a result, the tac time and inspection process could be shortened. The proposed method also could be applied to the OLED manufacturing process. Production of OLED could be increased by reducing tac time and inspection process.
Keywords
OLED inspection; Standard Pattern; Deposition Pattern;
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1 S. El-Khamy, M. Hadhoud, M. Dessouky, B. Salam, and F. El-Samie, "A new edge preserving pixel-by-pixel(PBC) cubic image interpolation approach," 21st National Science Conference (NRSC2004), 2004. pp.Cn.1-9.
2 지승배.최혜원.육경수, "OLED 재료 기술," KIC News, 제19권, 제3호, 2016, pp.1-11.
3 이경민.장문수.박부견, "패턴 비교를 통한 TFT-LCD 패널의 결함 검출 방법," 전기학회논문지, 제57권, 제2호, 2008, pp.307-313.
4 김성룡, "백색광 위상 천이 간섭계에서 두 대의 카메라를 이용한 위상 오차 보정," 서울대학교 대학원 박사학위논문, 2014.
5 박창민, "객체의 색채 항등성을 위한 조명 모델응용에 관한 연구," 디지털산업정보학회 논문지, 제13권, 제1호, 2017, pp.125-133.
6 김동형, "Color Domain 및 Gammar Correction 적용에 따른 Retinex 기반 영상개선 알고리즘의 효과분석," 디지털산업정보학회 논문지, 제15권, 제1호, 2019, pp.99-107.
7 유훈, 적응적인 선형 보간을 이용한 부화소 기반영상 확대, 멀티미디어학회 논문지, 제9권 제8호, 2006, pp.1000-1009.
8 S. Park and R. Schowengerdt, "Image reconstruction by parametric cubic convolution," Computer Vision, Graphics, and Image Processing, Vol.23, Isssue 3, 1983, pp.258-272.   DOI
9 J. Han and S. Baek, "Parametric cubic convolution scaler for enlargement and reduction of image," IEEE Transactions on Consumer Electron, Vol.46, No.2, 2000, pp.247-256.   DOI
10 G. Ramponi, "Warped distance for space-variant linear image interpolation," IEEE Transactions on Image Processing, Vol.8, Issue.5, 1999. pp.629-639.   DOI
11 신동식, "OLED 디스플레이," 산업테마보고서, 한국IR협의회, 2019.
12 J. Hwang and H. Lee, "Adaptive image interpolation based on local gradient features," IEEE Signal Processing Letters, Vol.11, No.3, 2004, pp.359-362.   DOI