LCD of high aperture ratio and high transmittance preventing color shift having transparent pixel and counter electrodes producing oblique electric fields

摘要

The present invention is directed to prevent color shift in liquid crystal display devices and to improve their aperture ratio and transmittance.;High aperture ratio and high transmittance liquid crystal display preventing color shift comprising: an upper substrate and a lower substrate opposed to be separated by selected distance; a liquid crystal layer including a plurality of liquid crystal molecules and interposed between inner surfaces of the upper and lower substrates; a first electrode formed on the inner surface of the lower substrate; and a second electrode formed on the inner surface of the lower substrate, wherein the first electrode and the second electrode form an electric field for driving the liquid crystal molecules; wherein in the absence of electric field between the first and second electrodes, the liquid crystal molecules are aligned such that their long axis are parallel to surfaces of the substrates in a first direction; wherein after a selected voltage is applied therebetween, first and second diagonal electric fields are simultaneously formed in a pixel, the two diagonal electric fields are formed to be symmetrical with respect to the first direction; wherein the first and second electrodes are made of transparent materials; wherein the distance between the first and second electrodes is shorter than the distance between the upper and lower substrates; wherein widths of the first and second electrodes are determined such that liquid crystal molecules overlying the two electrodes are driven by the electric field generated between the first and second electrodes.