Organic EL display apparatus and driving method therefor

Details Organic EL display apparatus and driving method therefor Organic EL display apparatus and driving method therefor

Filed on

2007-03-30

Date issued

2009-11-10

Examiner

Vu, David Hung (Department: 2821)

Patent Class

Computer graphics processing and selective visual display system

SubClass

Plural physical display element control system

SubSubClass

Display elements arranged in matrix

Other Related Categories

C345S205000, C345S206000

Type

Reexamination Certificate

Status

active

Patent number

07616179

Description

ABSTRACT:
An organic EL display apparatus has a driving circuit. In the driving circuit, the source and drain of a driving transistor and the anode and cathode of an organic EL device are connected in series between voltage sources. A current passes between the source and drain of the driving transistor and between the anode and cathode of the organic EL device in accordance with a voltage between the gate and source of the driving transistor. Consequently, the organic EL device emits light. In order to store the voltage in the capacitor, a constant voltage source is connected to the gate of the driving transistor and the above-described series connection is disconnected at the source of the driving transistor and connected to a signal source. Then, a current signal output from the signal source passes between the source and drain of the driving transistor, and charges are stored in a capacitor in accordance with the current signal.

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