Driving method of thin film EL display unit and driving circuit

Details Driving method of thin film EL display unit and driving circuit Driving method of thin film EL display unit and driving circuit

1988-06-17

1991-03-12

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

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

340785, 340805, 3151693, G09G 330

Patent

active

049996185

ABSTRACT:
A driving method of a thin film EL display unit and a driving circuit thereof comprising a thin film EL panel constituted by installing an EL layer between scanning-side electrodes and data-side electrodes and driver ICs which are connected respectively to the scanning-side electrodes and the data-side electrodes, wherein, on a drive which applies a write voltage positive to the data-side electrodes to the scanning-side electrodes, the scanning-side electrodes are raised once to a predetermined potential or higher, and thereafter the positive write voltage is applied thereto, and on a drive which applies a write voltage negative to the data-side electrodes to the scanning-side electrodes, the scanning-side electrodes are reduced once to a predetermined potential or lower, and thereafter the negative write voltage is applied thereto, which can reduce a maximum voltage applied to the scanning-side driver ICs.

REFERENCES:
patent: 4237456 (1980-12-01), Kanatani
patent: 4338598 (1982-07-01), Ohba et al.
patent: 4652872 (1987-03-01), Fujita
patent: 4686426 (1987-08-01), Fujioka et al.
patent: 4707692 (1987-11-01), Higgins et al.

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