Split screen electrode structure for TFEL panel

Details Split screen electrode structure for TFEL panel Split screen electrode structure for TFEL panel

1987-11-02

1989-01-10

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340719, 340774, G09G 330

Patent

active

047976675

ABSTRACT:
An electrode structure for an AC matrix-addressed TFEL panel includes top and bottom sets of scanning electrodes, each located in a respective half of the panel, and top and bottom sets of data electrodes extending at right angles to the scanning electrodes where each electrode in the top and bottom set extends for a distance slightly less than halfway across the panel to provide a split screen display. The scanning electrodes are driven by driver amplifiers that simultaneously energize complimentary pairs of the scanning electrodes in the top and bottom halves of the panel driving them in line-by-line fashion. The top and bottom sets of data electrodes are driven simultaneously by top and bottom sets of electrode drivers simultaneously with each scan of the data electrodes. In this way the top and bottom halves of the panel are scanned simultaneously, and the writing of one frame of data is faster. Also, the column electrodes are shorter and therefore require less energy and consume less power per frame.

REFERENCES:
patent: 3048824 (1962-08-01), Thompson
patent: 3209229 (1965-09-01), Cox, Jr.
patent: 3882355 (1975-05-01), De Witt
patent: 4231640 (1980-11-01), Funada et al.
patent: 4238793 (1980-12-01), Hochstrate
patent: 4308534 (1981-12-01), Yamamoto
patent: 4448490 (1984-05-01), Shibuya et al.

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