发明名称 |
Method of turning off the display in electrochromic display devices |
摘要 |
The display in a diffusion type electrochromic display device is turned off with high response by applying an A.C. input voltage having a frequency of one to ten times as high as the cut-off frequency. The diffusion type electrochromic display device is an EC display device which uses an EC composition consisting of an EC compound coloring in a reduced state and a solvent in which the solubility of the compound to the solvent is 10-2 mol/(100 g solvent) or more in a reduced state and 10-1 mol/(100 g solvent) or more in an oxidized state. The cut-off frequency is a critical frequency at a freqency higher than which the oxidization or reduction of the EC compound cannot follow the change in the input voltage, which is normally 20 to 50 Hz.
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申请公布号 |
US4166676(A) |
申请公布日期 |
1979.09.04 |
申请号 |
US19770798489 |
申请日期 |
1977.05.19 |
申请人 |
DAI NIPPON TORYO K K |
发明人 |
FUJINO, SHIGEO;FURUTA, SHIGETARO;KATO, HARUHIRO;YAGUCHI, MASACHIKA |
分类号 |
G02F1/17;G02F1/15;G02F1/153;G02F1/163;G09F9/30;G09G3/19;(IPC1-7):G02F1/17 |
主分类号 |
G02F1/17 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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