Patent
1978-01-25
1980-02-05
Davie, James W.
G02F 117
Patent
active
041870042
ABSTRACT:
A transparent electrode is formed on a transparent substrate in a desired configuration. An electrochromic layer is formed on the entire surface of the transparent substrate inclusive of the surface of the transparent electrode. The electrochromic layer is initially placed in the coloration state. A back layer which exhibits color sensation different from that of the coloration state of the electrochromic layer is disposed above the electrochromic layer. A desired electrode is selected to bleach the electrochromic layer formed thereon, through which the back layer is recognized, thereby displaying a desired pattern in the negative type.
REFERENCES:
patent: 3521941 (1970-07-01), Deb et al.
patent: 3827784 (1974-08-01), Giglia et al.
patent: 3892472 (1975-07-01), Giglia
patent: 3944333 (1976-03-01), Leibowitz
patent: 4086003 (1978-04-01), Kouchi et al.
Hishida Tadanori
Inami Yasuhiko
Wada Tomio
Yano Kohzo
Davie James W.
Sharp Kabushiki Kaisha
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