New RGB Backlighting System for Liquid Crystal Display

We provide you with an article contain information about new backlighting system forLiquid Crystal Displays (LCDs)utilize RGB LED lightsources, an optical sensor and feedback controller. The aim of using optical feedback is a color stability over temperature, maintaining constant brightness, and controlling any color point or brightness required by the LCDs.


DGS9-03AS    K4H510438B-TC/L...   CA3108E14S-6SBA...   FX5545G0083V5T1   TEH100M10R0FE   JR21BRB-10PC   P11S1A0BGSY0010...   B43501A3567M

MTLB258-Y   EC2-3SNU   DB3   FCA-325-WV9   AS7C31025A-12TJ...   A32100DXV-2PQ20... Within the article you will find section discuss about Main functional blocks of the backlighting systems, The understanding of xy coordinate and brightness y (colorimetry), Luxeon RGB lightsource, Typical LED performance in temperature/lifetime behaviour, LED output wavelength using pulse width modulation (PWM), the RGB backlighting system description (click figure to enlarge), Feedback controller (clipping, brightness, calibration), Photodiode sensor for averaging radiometric power, and Luxeon LED driver descriptions.

See the capability of high performanceLED backlight systemfor LCDsusing optical feedback and luxeon lightsources for color controlling in the following LCD article (source:http://www.hqew.net/circuit-diagram/New-RGB-Backlighting-System-for-Liquid-Crystal-Display_5408.html ).