发明授权
US06256010B1 Dynamic correction of LCD gamma curve 失效
LCD伽马曲线的动态校正

Dynamic correction of LCD gamma curve
摘要:
A method and means for correcting the &ggr; - curve of an LCD by calculating an inverse &ggr; - curve from the &ggr; - curve of the LCD measured by the manufacturer and producing a straight line V-T plot from the combination, a set of corrected voltages selected from the inverse &ggr; - curve is provided for the different positions or viewing angles of the display, thus improving the &ggr; - curve correction efficiency at different viewing angles of the LCD. In one embodiment, a timing control ASIC, that produces the horizontal scan and vertical scan signals of the display, is used to time the outputting of sets of &ggr; - curve correction voltage signals stored in high speed memories for application, after digital to analog conversion, to the horizontal scan lines of the LCD to be corrected. The ASIC also provides a set of latch enable signals to a set of data latches, which receive the correction voltage signals as input signals from the memories, and provide the corrected voltage outputs, through a set of digital to analog converters (DACs) to a number of output lines connected to the LCD.
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