Patent ID: 7646359
Filing Date: 2010-01-12
Classification: G09G

Abstract:
1. A flat display unit comprising: a pixel group which is two-dimensionally arranged in a display region and in which pixels for red (R), green (G), and blue (B) are repeatedly arranged in a row direction; a source drive circuit which outputs signals to a signal line group every scanning period and which supplies the signals to the corresponding pixels for red (R), green (G), and blue (B); a color signal interpolation circuit which defines an input video signal of green (G) as a first color signal of a reference, and the other two input video signals as second and third color signals, and which multiplies a plurality of time-shifted samples of the second color signal by co-efficients, respectively, and synthesizes the samples to generate a first interpolation color signal as the R system, and which multiples a plurality of time-shifted sample of the third color signal by coefficients, respectively, and synthesizes the samples to generate a second interpolation color signal as the B system; the color signal interpolation circuit including a circuit for defining a Gn signal as a center of a phase, denoting an integer with n, and obtaining the following calculation outputs in a position of a phase delayed behind Gn by one clock in order to obtain two interpolation samples between the respective samples of the R, G, B input video signals: a circuit for obtaining the following calculation outputs in a position of a phase advanced ahead of Gn by one clock: a circuit for obtaining Gn=Gn in a phase position of Gn; and a signal output circuit which supplies to the source drive circuit the first color signal, the first interpolation color signal, and the second interpolation color signal obtained.