文章基本信息

标题：Design and Implementation of Controller for Display Image with Pulse Width Modulation
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作者：SHASHIKUMAR.R ; DR. S.BHARGAVI ; DEEPA.B 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：6
页码：2163
出版社：S&S Publications
摘要：Pulse width modulation technique is based on the conventional line by line addressing is proposed.A large number of gray shades can be displayed without flicker by using low cost liquid crystal drivers that aredesigned to drive the pixel to either ON or OFF states. Quality of image in a display depends on the contrast,colour, resolution and the number of gray shades. A large number of gray shades are necessary to displayimages without any contour lines. These contours are due to limited number of gray shades in the displaycausing abrupt changes in grayness of the image while the original image has gradual change in brightness.PWM has the capability to display a large number of gray shades with fast switching states.
关键词：Pulse width modulation; liquid crystal display; line by line addressing; gray shades