Nonlinear resistance films suitable for an active matrix lcd

Abstract

A liquid crystal display device includes a first unit, a second unit and a liquid crystal layer. The first unit has a first substrate, plural first electrodes formed on the first substrate and in parallel, a first nonlinear resistance film having a thickness of about 0.3 to 0.5 .mu.m and located to cover said first substrate and said plural first electrodes, and a first insulating film formed on said first nonlinear resistance film and to have a thickness of about 0.04 to 0.07 .mu.m. The second unit has a second substrate, plural second electrodes formed on the second substrate and located in parallel to each other and to cross the first electrodes at right angles respectively, a second nonlinear resistance film having a thickness of about 0.3 to 0.5 .mu.m and formed to cover said plural second electrodes and said second substrate, and a second insulating film formed on said second nonlinear resistance film and having a thickness of about 0.04 to 0.07 .mu.m. The liquid crystal layer is formed between the first and the second units and to have a thickness of about 2.0 to 4.0 .mu.m. In this device arrangement, the application of an ac driving voltage serves to reduce a resistance value of the nonlinear resistance film so that the almost of the ac driving voltage is applied to the liquid crystal layer. Hence, no restriction is burdened on the design of the LCD device.