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http://dx.doi.org/10.5762/KAIS.2010.11.4.1278

TFT-LCD Mura Detection Algorithm Using Multi-point 2-D FFT  

Jang, Young-Beom (Department of Information Technology and Communications, SANGMYUNG UNIV.)
Kim, Han-Jin (Department of Information Technology and Communications, SANGMYUNG UNIV.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.4, 2010 , pp. 1278-1284 More about this Journal
Abstract
In this paper, we propose a new mura detection algorithm for TFT-LCD effectively, which is based on multi-point, 2-dimensional FFT. Since mura in TFT-LCD has a certain area shape, it is seen as a sin wave in a LCD line. Since shapes of mura can be seen a circle, horizontal oval, or vertical oval, it is shown that they can be detected by 2-dimensional FFT easily. Through simulation for test image, it is shown that proposed algorithm can detect various sizes of mura. The proposed algorithm can be utilized in automatic test equipment for effective TFT-LCD mura detection.
Keywords
TFT-LCD; Mura; 2-Dimension FFT;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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