Patent ID: 6246385
Filing Date: 2001-06-12
Classification: G09G

Abstract:
A liquid crystal display device comprising:a liquid crystal panel having plural signal lines and plural scanning lines disposed in a matrix, and disposing pixels at intersections of said signal lines and scanning lines, where the optical state of the liquid crystal cells of said pixels is changed by applying a voltage to said scanning lines and signal lines corresponding to said pixels,at least one signal line drive circuit selected from first and second signal line drive circuits for applying a signal line drive voltage in every horizontal scanning to one end and to the other end, respectively, of said signal lines,at least one scanning line drive circuit selected from first and second scanning line drive circuits for applying a scanning line drive voltage to one end and to the other end, respectively, of said scanning line to be activated at the horizontal scanning, anda control circuit for instructing generation of said signal line voltage in synchronism with said scanning line driving voltage to said signal line drive circuit on the basis of an input image signal, wherein,at least either said signal lines or said scanning lines are driven by both end drive scheme, that is, both first and second drive circuits are selected, andwhen the scanning lines are driven by both end drive scheme, an output resistance of said scanning line drive circuits is set below one half of the output resistance of the scanning drive circuit used in single end drive scheme, andwhen the signal lines are driven by both end drive scheme, an output resistance of said signal line drive circuit is set below one half of the output resistance of the signal drive circuit used in single end drive scheme.