A Method for Contrast Enhancement according to Video image in Liquid Crystal Display

액정표시 장치에서 영상에 따른 콘트라스트 제어 방법

  • 박행원 (성균관대학교 정보통신공학부, 삼성전자 Device Solution Network 총괄) ;
  • 전병우 (성균관대학교 정보통신공학부) ;
  • 이승우 (삼성전자 Device Solution Network 총괄) ;
  • 김영기 (성균관대학교 정보통신공학부)
  • Published : 2003.11.01


This paper describes a novel method for image contrast enhancement by controlling gamma curve in AMLCD. The key idea is to automatically manipulate gamma voltage in accordance with the image data distribution. This method is applied to 17" SXGA LCD monitor module. The contrast ratio and the brightness are enhanced respectively by about 3 times and 1.7 times, by using the proposed method.