Title :
High-Image Reproduction by the Low-Field-Rate Stencil-LPD Method for Field-Sequential-Color LCDs
Author :
Fang-Cheng Lin ; Chi-Wen Chang ; Yi-Pai Huang ; Shieh, Han-Ping D.
Author_Institution :
Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
Color breakup is a lethal issue to conventional field-sequential-color LCDs. Several methods have been proposed to solve this problem. However, these solutions are either more than 180 Hz-the currently used LC mode is not sufficiently fast for this field rate-or they degrade the image quality while using a field rate of 120 Hz. To overcome these limitations, a 120 Hz Stencil Local Primary Desaturation, Stencil-LPD, is presented in this work. The 120 Hz Stencil-LPD method provides reduced but sufficient saturated backlight color to precisely present an image with less color distortion or color breakup. After optimizing a number of backlight segments, the experimental results demonstrate that the image fidelity is significantly improved and color breakup is greatly suppressed compared to the existing methods.
Keywords :
colour displays; liquid crystal displays; optical distortion; color breakup; color distortion; field sequential color LCD; high image reproduction; low field rate stencil-LPD method; stencil local primary desaturation; Distortion; Image color analysis; Image resolution; Image segmentation; Optical filters; Power capacitors; Power demand; FSC; LPD; color breakup; field-sequential-color; local-primary-desaturation; stencil;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2015.2448762
