Method and apparatus for generation of gray scale adjustment voltage and panel driver circuit
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Jan 24, 2014
filing date -
Jul 19, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a method and apparatus for generating gray scale adjustment voltages and a panel driver circuit using the same. With the method provided in the invention, said apparatus for generating gray scale adjustment voltages generates a plurality of gray-scale reference voltage groups at a given time interval T0, and provides them for, such as a data driver circuit for adjusting gray scale of pictures by means of the reference gray-scale voltages, wherein values of the gray-scale reference voltages in each gray-scale reference voltage group are different from one another, and the time interval T0 need to be less or equal to a quotient from the displaying time in each frame divided by the product of the number of pixels in the vertical direction of a display screen and the number of gray-scale reference voltage groups. The present invention can improve the rate for outputting the gray scale voltages by said gray scale adjustment voltages generation apparatus without modifying the original data driver circuit in the liquid crystal display, such that a displaying effect of higher-order is obtained and improvement in picture quality is accomplished. The present invention may be widely used in various image display devices.
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