Display unit having brightness control function

Details Display unit having brightness control function Display unit having brightness control function

1991-09-18

1993-11-16

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 77, G09G 320

Patent

active

052627667

ABSTRACT:
A display unit includes a thin film EL display panel, a scanning side switching circuit connected to a scanning side electrode, a data side switching circuit connected to a data side electrode, a scanning side drive circuit which outputs a high voltage pulse to the scanning side switching circuit and a data side drive circuit which outputs a signal voltage to the data side switching circuit. It further includes a device for decreasing a pulse width of a high voltage pulse supplied from the scanning side drive circuit to the scanning side switching circuit in accordance with an increase of the level of a high voltage generated by a high voltage power supply in the scanning side drive circuit.

REFERENCES:
patent: 4021607 (1977-05-01), Amano
patent: 4636789 (1987-01-01), Yamaguchi et al.
patent: 4859910 (1989-08-01), Iwakawa et al.
patent: 4951041 (1990-08-01), Inada et al.

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