Title: Electronic wristwatch digital display

Abstract: An electronic wristwatch having an improved digital display is provided. The display elements include first electrodes adapted to be referenced to a first potential and second electrodes spaced apart from said first electrodes and adapted to be charged to at least two distinct potentials. An oxidation-reduction sensitive compound is disposed between said first and second spaced apart electrodes the compound being reduced to a first condition of transparency in response to a first difference in potential between said first and second electrodes and being oxidized to a second condition of transparency in response to a second difference in potential between said first and second electrodes. Novel circuitry is utilized to incorporate the digital display in an electronic wristwatch.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Kouchi, Akihiko (Suwa, JA)
Takeda, Shuji (Suwa, JA)
Takeshita, Hiroshi (Suwa, JA)

Application Number: 566636
Filing Date: 1975-04-08
Publication_date: 1977-07-12
Assignee: Kabushiki Kaisha Suwa Seikosha (Tokyo, JA)
Primary Class(es): 368/82 349/142, 359/245, 368/239, 968/933, 968/962, 968/DIG1
Other Classes:
US Patent Ref:

3194003	Jul, 1965	Polin	58/50.
3485033	Dec, 1969	Langley	58/50.
3521941	Jul, 1970	Deb et al.	58/50.
3540209	Nov, 1970	Zatsky et al.	58/50.
3578843	Mar, 1971	Castellion	350/100.
3626410	Dec, 1971	DE Koster	58/23.
3756013	Sep, 1973	Berget et al.	58/50.
3806229	Apr, 1974	Schoot et al.	350/160.
3839857	Oct, 1974	Berets et al.	58/23.
3844636	Oct, 1974	Maricle et al.	350/160.
3879108	Apr, 1975	Berets	350/160.
3892472	Jul, 1975	Giglia	350/160.

Other Refs: 1,243,269

Jun, 1967	DT

Primary Examiner: Schaefer, Robert K.
Assistant Examiner: Miska, Vit W.
Attorney: Blum, Moscovitz, Friedman & Kaplan