Invention Grant
US08390539B2 Driving circuit for light-emitting device and display apparatus 失效
发光装置和显示装置的驱动电路

Driving circuit for light-emitting device and display apparatus
Abstract:
A driving circuit for a light-emitting device outputs a drive current from an output terminal to the light-emitting device in accordance with a signal current input from an input terminal. The driving circuit includes a drive transistor, a capacitor connected between a gate and a source of the driving transistor, and a resistance device and a first switch arranged in series between a drain of the drive transistor and the input terminal. In addition, a second switch is configured to connect the gate and the drain of the drive transistor through the resistance device when the first switch is closed, and a third switch is disposed in a path through which a drain current of the drive transistor flows from the output terminal to the light-emitting device. The resistance device increases its resistance in accordance with a cumulative amount of a passing current.
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