Image display device with element driving device for matrix driv

Details Image display device with element driving device for matrix driv Image display device with element driving device for matrix driv

1999-03-25

2000-07-18

Wong, Don

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

345 55, 345 76, 345211, G09G 310

Patent

active

060912030

ABSTRACT:
An image display device has multiple active elements arranged therein, such as an organic EL (Electro-Luminescence) element to matrix-drives these active elements. In the image display device, when a switching element is turned on with a control signal applied to a control electrode, a control current on a signal electrode is converted to a control voltage by a second transistor, held in a holding capacitor, and applied to a gate electrode of a first transistor. Thus, the signal electrode is applied with the control current, not with a control voltage, for controlling the operation of the active element. A drive voltage to be applied to a power supply electrode is converted to a drive current and supplied to the active element.

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patent: 5966110 (1999-10-01), Van Zalinge

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