Abstract: A liquid crystal display device with excellent display characteristics such as dot defects and missing of pixels prevented from occurring, a bright display screen and the like can be realized. In addition, a yield rate is enhanced remarkably. The display device has a transparent substrate, non-linear elements, each having a plurality of electrodes, disposed on the transparent substrate, a protective film disposed on each respective nonlinear element of above, an interlayer insulating film disposed on the protective film and a pixel electrode disposed on the interlayer insulating film. An opening, the cross-section of which is configured in a V-letter like slanting shape, is formed in the protective film and interlayer insulating film, respectively. The opening is exposed to the surface of the nonlinear element. Each respective opening of above forms a first end part on the protective film and a second end part on the interlayer insulating film and the first end part is located outside of the second end part.

Abstract: A reflection type liquid crystal display element of normally white type and a reflection type liquid crystal display element of normally black type, both high in brightness and contrast, and capable of changing into black or white achromatically, are obtained.

Abstract: A reflective liquid crystal display device of the present invention has the following construction. Only one polarization film is needed. The twist angle of the nematic liquid crystal layer is set in the range of 0° to 90°. The product of the birefringence of the nematic liquid crystal layer &Dgr;nLC and the thickness of the liquid crystal layer dLC, &Dgr;nLC·dLC, is in the range of 0.35 &mgr;m to 0.50 &mgr;m. The birefringence difference, &Dgr;R=RFilm−&Dgr;nLC·dLC is in the range of −0.20 &mgr;m to 0.00 &mgr;m.

Abstract: A reflective liquid crystal display device employing only one sheet of polarizer film. An optical compensator of a hybrid tilt type having retardation rc is disposed between a liquid crystal cell and the polarizer film disposed only on one side of the liquid crystal cell. When an effective voltage von is applied to the liquid crystal cell, the retardation rc of the optical compensator is determined to accomplish the following relation: ron+rc=&lgr;/4+m·&lgr;/2(m=0, 1, 2 . . . ) Or ron+rc=(m+1)·&lgr;/2(m=0, 1, 2 . . . ) where ron is retardation of the liquid crystal layer and &lgr; is the optical wavelength. This disclosure enables the a reflective liquid crystal display device with brighter white display, higher contrast, achromatic monochrome display, and broader viewing angle to be constructed.