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대면적 LCD 패널 검사장비용 LED 광엔진 시제품 설계 및 제작
류장렬(Jang-Ryeol Ryu),이부형(Boo-Hyung Lee),박현상(Hyun-Sang Park),이구열(Gu-Yuol Lee) 한국정보기술학회 2009 한국정보기술학회논문지 Vol.7 No.6
LEDs are using widely in field of illumination, optical source of inspection instrument and LCD backlight because they have several merits such as low power consumption, long lifetime, high brightness ratio, fast response, environment friendly. For using them as an optical source of inspections equipment for LCD panel, the design of excellent optical engine havings, brightness uniformity and high power and good protection against heat is essential. In this paper, two optical engine prototypes which is built in the large size LCD backlight by LED array structure were designed and developed. After that, their performances were measured. The final selected optical engine prototype was what has Type Ⅱ LED array structure It showed the luminous intensity uniformity of 101%, luminous intensity of 236% and temperature of 150% over target values.