Electrochromic display dot drive matrix

Details Electrochromic display dot drive matrix Electrochromic display dot drive matrix

1989-09-19

1991-09-17

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340783, 359267, G02F 115, G09G 338

Patent

active

050498681

ABSTRACT:
A planar matrix of display picture elements is operated by supplying power to the picture elements by a high current planar drive electrode connected to the picture elements, and a planar counter electrode slightly separated from the picture elements' display dots, and by addressing the picture elements with low current leads parallel to the plane of the matrix. The planes of the electrodes are parallel to the plane of the matrix. The elimination of high current power leads improves response time and resolution. The separation of the counter electrode from the display dots eliminates the need to refresh the picture elements. An isolation transistor in series with the drive transistor allows simultaneous color change of the entire matrix by simultaneous turning on and off of all isolation transistors.

REFERENCES:
patent: 4228431 (1980-10-01), Barclay et al.
patent: 4364041 (1982-12-01), Fukuda et al.
patent: 4456337 (1984-06-01), Nicholson
patent: 4469449 (1984-09-01), Kato
patent: 4488780 (1984-12-01), Nicholson
patent: 4512637 (1985-04-01), Ballmer
patent: 4516120 (1985-05-01), Sakuyama
patent: 4649382 (1987-03-01), Martin et al.
Multicolor Electrochromic Dot-Matrix Display Investigation Report ONR-CR339-005-IF, Jun. 1980; Nicholson et al.

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