Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1976-06-01
1977-11-08
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307251, 340336, 35060R, H03K 1700
Patent
active
040577392
ABSTRACT:
An improved display driving circuit for driving an electro-chromic display cell is provided. The electro-chromic display cell is formed of a first conductor adapted to be referenced to a first potential and a second conductor spaced apart from the first conductor and adapted to be referenced to either a second potential or a third potential. An oxidation-reduction sensitive compound is disposed between the first and second spaced apart conductors. The compound is normally at a first level of transparency in response to a first predetermined potential difference between the first potential and the second potential and is altered to a second level of transparency in response to a second predetermined potential difference between the third potential and the first potential. An injection type transistor circuit alternately and successively applies a second potential and third potential to the second conductor to produce a transient characterized by an initial sharp increase and a subsequent slower decrease in current across the first and second conductors the transient being produced by the second predetermined potential difference.
REFERENCES:
patent: 3751682 (1973-08-01), Howe
patent: 3828547 (1974-08-01), Fujita
patent: 3938318 (1976-02-01), Collins
patent: 3988616 (1976-10-01), Shimada
Davis B. P.
Kabushiki Kaisha Suwa Seikosha
Miller, Jr. Stanley D.
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