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The Fabrication and Design of Driving Circuit for LCD panel using the high efficiency LED

고 효율 LED를 이용한 LCD 패널 구동회로의 설계 및 제작

  • Ryu, Jang-Ryeol (Division of Electrical, Electronic & Control Engineering Kongju National University)
  • 류장렬 (공주대학교 전기전자제어공학부)
  • Received : 2012.03.27
  • Accepted : 2012.07.12
  • Published : 2012.07.31

Abstract

For using them as a optical source of inspections equipment for LCD panel, the design ofexcellent backlight system, brightness uniformity and high power and good protection against heat is essential.In this paper, backlight system which is built in the 45 inch side emitting LCD backlight by LED arraystructure and driving circuit were designed and developed. After that, their performances were measured. Itshowed the luminance from 3,000 to 25,000[$cd/m^2$], the mean value x:0.3144, y:0.3076 of x-y chromaticity,dimming range of 27~515[$cd/m^2$], free flicker noise in the 80kHz and black level of 0.7~0.1[$cd/m^2$], thermaltest of cooling system in 20,000[$cd/m^2$] over values.

Keywords

LCD;LED;Backlight Array;Side Emitting;Medical Display Equipment

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