Patent ID: 7554565
Filing Date: 2009-06-30
Classification: G09G

Abstract:
1. A display device, comprising: an image attribute signal generating portion analyzing red (R), green (G), and blue (B) input data signals and generating a plurality of attribute signals; a signal treating portion connected to the image attribute signal generating portion, the signal treating portion converting the R, G, and B input data signals, which have first brightness levels, to R, G, and B output data signals, which have second brightness levels lower than the first brightness levels, using the plurality of attribute signals when the R, G, and B input data signals are used to display images having colors other than white; and a display portion having a plurality of pixels, wherein each pixel includes R, G, and B sub-pixels, and wherein the R, G, and B output data signals are supplied to respective ones of the R, G, and B sub-pixels, wherein the image attribute signal generating portion includes: an intermediate signal generation portion connected to the MIN-MAX extracting portion and the signal treating portion, the intermediate signal generation portion generating an intermediate signal (W) using the minimum signal, and wherein the signal treating portion converts the R, G, and B input data signals to the R, G, and B output data signals in accordance with the expression (Ro, Go, Bo)=((1−α)×MAX+α×W)/MAX×(Ri, Gi, Bi) (where Ro, Go, and Bo are the R, G, and B output data signals, respectively, Ri, Gi, and Bi are the R, G, and B input data signals, respectively, α is the image attribute factor, and MAX is the maximum signal.