Liquid crystal display apparatus for generating an output video signal based on an input video signal and a lighting signal

摘要

A LCD display includes a light source section, a LCD panel including a plurality of pixels each having sub-pixels of R, G, B, and Z, and a display control section including an output signal generation section. The display control section performs a display drive on the sub-pixels with use of the respective output video signals, and performs a lighting drive on the light source section with use of the lighting signal. The output signal generation section generates output video signals corresponding to the respective four colors, based on the input video signals, and generates a lighting signal of the light source section, based on the input video signals, to perform a predetermined dimming processing, based on both the input video signals and the generated lighting signal, and finally generates the output video signals through performing a predetermined color conversion processing, based on a resultant video signal from the dimming processing.

主权项

1. A liquid crystal display apparatus, comprising:
a light source; a liquid crystal display panel including a plurality of pixels, each pixel of the plurality of pixels having sub-pixels of three colors including red (R), green (G), and blue (B), and a sub-pixel of a color (Z) with a luminance higher than those of the three colors; and a display control circuit including an output signal generation circuit, a backlight driving circuit and a data driver for the liquid crystal display panel, wherein the output signal generation circuit includes a backlight level calculation circuit, a level calculation circuit and a predetermined color conversion circuit, the backlight level calculation circuit receives an input video signal that includes only colors R, G and B, and generates a lighting signal by processing the input video signal, the level calculation circuit receives the input video signal and the lighting signal and generates a resultant video signal that includes only colors R, G and B, by performing a dimming processing on the input video signal according to the lighting signal, and the predetermined color conversion circuit generates an output video signal that includes colors R, G, B and Z, by processing the resultant video signal, the processing including performing predetermined chromaticity point adjustment on the resultant video signal to allow a chromaticity point of display light emitted from the liquid crystal display panel to come to a white color chromaticity point, and performing a color conversion processing on the resultant video signal after the chromaticity point adjustment.