Patent ID: 7375733
Filing Date: 2008-05-20
Classification: G09G

Abstract:
1. A method for driving an image display apparatus having a plurality of display devices and a plurality of scanning wiring and a plurality of modulation wiring connected to the plurality of display devices and arranged in a matrix, and in which a selection signal is applied to the scanning wiring selected in sequence, and a modulation signal based on the display signal is applied in parallel to the modulation wiring in synchronization with the selection signal to drive the display device, the method comprising: a first driving mode that selects only one scanning wiring in one selection period; and a second driving mode that drives the image display apparatus so as to select, in one selection period, a plurality of scanning wiring at the same time and so as to select, in the following selection period, a plurality of scanning wiring shifted by one scanning wiring from the plurality of scanning wiring selected in the preceding selection period, and wherein the modulation signal is output in the first driving mode by use of a first correction coefficient corresponding to each display device, and the modulation signal is output in the second driving mode based on a correction display signal computed newly every time according to the display signal and the first correction coefficient in the first driving mode so as to compensate for an error of luminance caused in the second driving mode, wherein when it is assumed that the display signal for the display device located at a point of intersection (x, y) of an x-th wiring of a total of n modulation wirings and a y-th wiring of a total of m scanning wirings are D(x, y), and that the first correction coefficient corresponding to the first driving mode is Q(x, y), a second correction coefficient q(x, y) corresponding to the second driving mode is expressed by and the correction display signal in the second driving mode is computed based on the second correction coefficient q(x, y).