Sharp Kabushiki Kaisha Corporation

Tokyo Ohka Kogyo Co., Ltd.

Sharp Corporation

Takaaki Miyazaki

Akira Hashimoto

Muneo Nakayama

Toshihiro Nishimura

Junichi Washo

Mitsuo Ishii

Sadakatsu Hashimoto

Mitsuru Nishiyama

Keiji Nakayama

Shinichi Hibino

An electrochromic display device comprising a transparent substrate and a counter substrate sealingly joined together to define a cell for accommodating an electrolyte, a transparent electroconductive layer on an inner surface of the transparent substrate, a display electrode layer overlaying the transparent electroconductive layer and a counter electrode layer deposited on an inner surface of the counter substrate is featured by the provision of a transparent insulating layer between the transparent substrate and the transparent electroconductive layer.

Electrochromic display device

An electrochromic display device comprises terminals formed on one of two substrates for connecting the electrochromic display device to a driver circuit, and one or more cut-off and lead-in electrodes each for connecting display segments to corresponding terminals. The cut-off and lead-in electrodes are adapted to have resistance values such that the results of a multiplication of each of the resistance values and the area of a corresponding one of the display segments are approximately constant as compared to remaining couples of the remaining display segments and corresponding lead-in electrodes. Each of the cut-off and lead-in electrodes has a cut-off portion not available for electrical interconnection. In another form of the present invention, the lead-in electrodes, regardless of whether or not the cut-off portion is present, are formed on a substantially entire surface of one of the two substrates so that gaps therebetween are not noticed by a visual scale.

Lead-in electrode structure for electrochromic displays of the segmented

Liquid crystal material suitable for use in small display devices and consisting of one or more biphenyl or terphenyl compounds and one or more ester compounds, whereby low threshold voltage characteristics of one type of compound are complemented by the low viscosity and good response characteristics of the other type of compound, and liquid crystal material having good overall characteristics is achieved.

Liquid crystal material

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Nara, Japan

Takaaki Miyazaki