Patent ID: 7268751

Claim:
An image display apparatus composing: a plurality of display devices; a plurality of scanning wirings forming a matrix wiring for driving said plurality of display devices; a plurality of modulation wirings forming the matrix wiring for driving said plurality of display devices; a scanning circuit for applying a scanning signal to said scanning wirings and which sequentially switches said scanning wirings to which the scanning signal is applied with respect to each selection period; an image signal generation circuit for generating an image signal for carrying out screen display with a frequency Fb[Hz] as a display refresh rate, based on an input image signal having a predetermined refresh rate Fa[Hz], wherein the frequency Fb[Hz] is higher than Fa[Hz]; and a modulation circuit for applying a modulation signal which is based upon said image signal to said display device which is connected to said scanning wiring to which the scanning signal was applied, through said modulation wiring, wherein said scanning circuit is capable of switching between a first scanning condition in which said scanning circuit selects one scanning wiring at a time and a second scanning condition in which said scanning circuit selects more than one scanning wiring simultaneously, wherein, in the second scanning condition, the scanning signal is applied to said plurality of scanning wirings in one selection period, in such a manner that a frequency for switching said scanning wiring to which said scanning circuit applied the scanning signal becomes smaller than n/((1/Fb)−Tb), assuming that n (n≧2) is the number of the scanning wirings for scanning, Tb is a non-display period in one display refresh period.