Patent ID: 6833893
Filing Date: 2004-12-21
Classification: G02F

Abstract:
An OCB (optically compensated bend)-type liquid crystal display device, comprising:an active matrix substrate, which comprises a plurality of rectangular pixel regions, each of which is surrounded by one of a plurality of scanning lines arranged in parallel and one of a plurality of signal lines crossing said plurality of scanning lines through an insulating layer and each of which comprises a pixel electrode and a thin film transistor, and a transparent substrate provided with a common electrode, inserting a liquid crystal therebetween, and the opposing surface of the active matrix substrate and the opposing surface of the transparent substrate are treated so as to have the same orientation directions, wherein said orientation directions are limited to within Â±45 degrees for a short axis direction of the pixel electrode, such that the liquid crystal molecules are oriented approximately parallel to the short axis when the voltage is not applied between the pixel electrode and the common electrode and the liquid crystal molecules are prevented from being twisted when a horizontal electric field is applied between the pixel electrode and the signal line.