Funai Electric Company Ltd.

Funai Electric Advanced Applied Technology Research Institute Inc.

Tokai University Educational System

Wu Weng

Tetsuya Higuchi

Toshimi Fukuoka

Masao Suzuki

Masatoshi Ono

Rikuo Takano

Makoto Omodani

Disclosed is an electrochromic display device comprising: a first and a second substrates; a first and a second electrodes; and an electrochromic composition layer, wherein the device is of a passive matrix drive where the a display and an erasion are performed by an energization in reverse directions between the electrodes, the first and the second electrodes respectively comprise a plurality of electrodes, a pixel is formed where the electrodes are in a grade separated crossing, and the display is performed by voltage application processing where: (i) the first electrode is set as negative, and the second electrode is set as positive, to apply a voltage of a first potential difference, immediately followed by (ii) the first electrode being set as positive, and the second electrode being set as negative, to apply a voltage of a second potential difference equal to or more than the first potential difference.

Electrochromic display device

An electrochromic display device including: a first substrate; first electrodes parallely extending on the first substrate; a second substrate opposite to the first substrate; second electrodes parallely extending in a direction orthogonal to the first electrodes on the second substrate; and an electrochromic composition layer between the substrates, wherein the device is passive-matrix driven to perform a display by energization between the electrodes, and to perform erasing of the display by energization in a reverse direction, a pixel is formed in a portion where the first electrodes sterically intersect with the second electrodes, and metal electrical wires extending over the regions between the second electrodes and the second substrate along the second electrodes, each of metal electrical wires being conductively connected to each of the second electrodes corresponding to any one of the regions, and insulated from each of the second electrodes corresponding to the other regions.

Disclosed is an electrochromic display device, including, a first substrate, first electrodes provided on an upper surface of the first substrate, a second substrate provided to be opposed to the first substrate above the first substrate, the second substrate being formed of a transparent material, second electrodes provided on an undersurface of the second substrate, at least a part of the second electrodes being formed of a transparent electrode material, and an electrochromic composition layer provided between the first substrate and the second substrate. The electrochromic composition layer contains an electrochromic composition including a supporting electrolyte, a polar solvent, a leuco dye, a hydroquinone derivative and/or a catechol derivative, a ferrocene derivative, and a compound having a carbonyl group.

Disclosed is an electrochromic display device comprising: a first substrate; a first electrode; a second substrate; a second electrode; and an electrochromic composition layer, wherein the device is of a passive matrix drive where the device performs a display by an energization between the electrodes, and performs a erasion of the display, wherein the first electrode comprises electrodes, the second electrode comprises a plurality of transparent display electrodes, a pixel is formed where the electrodes are in a grade separated crossing, at least a surface of the electrodes is respectively oxidized, the electrochromic composition layer comprising (i) insulative partition walls and (ii) an electrochromic composition including a supporting electrolyte, a polar solvent, and a leuco dye, and wherein the device displays a selected pixel by applying a voltage of a first potential difference, and applies the voltage of a second potential difference so as not to cause any energization.

Growing community of inventors

Tsukuba, Japan

Wu Weng