Patent ID: 6917404
Filing Date: 2005-07-12
Classification: G02F

Abstract:
1. A transflective liquid crystal display, comprising: upper and lower substrates facing into and spaced apart from each other, wherein the upper and lower substrates include a plurality of pixel regions that display images; a liquid crystal layer interposed between the upper and lower substrates, wherein the liquid crystal layer has a first adjusted thickness to compensate a residual optical retardation of incident light caused by anchored liquid crystals near an alignment layer when a maximum operation voltage is applied; an upper quarter wave plate (QWP) on the upper substrate, wherein the upper quarter wave plate has a second adjusted thickness to compensate the residual optical retardation caused by the liquid crystal layer when the maximum operation voltage is applied; an upper polarizer on the upper quarter wave plate; a transparent common electrode on a surface of the upper substrate facing into the lower substrate; a pixel electrode over a first surface of the lower substrate, wherein the pixel electrode corresponds to each pixel region, and the pixel electrode is divided into transparent and reflective portions; a lower quarter wave plate (QWP) on a second surface of the lower substrate; a lower polarizer below the lower quarter wave plate; and a backlight device arranged to be adjacent to the lower polarizer, wherein the first adjusted thickness is d+d where T is a value of transmittance when a maximum operation voltage is applied, φ is an angle between an optical axis of the liquid crystal layer and a transmissive axis of the polarizer, Δn is a birefringence of the liquid crystal layer.