Analog buffer with voltage compensation mechanism

Details Analog buffer with voltage compensation mechanism Analog buffer with voltage compensation mechanism

2008-06-12

2010-11-16

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S108000

Reexamination Certificate

active

07834671

ABSTRACT:
An analog buffer having voltage compensation mechanism is disclosed for use in a source driving circuit of a liquid crystal display. The analog buffer includes a reference voltage generator, a plurality of capacitors, a plurality of switches, and a plurality of transistors. Each of the capacitors is utilized to store the gate-source voltage of the corresponding turn-on transistor for performing gate-source voltage compensation operation based on the reference voltages provided by the reference voltage generator. Each of the switches functions to control gate-source voltage compensation operation and is turned on/off in response to a corresponding control signal. The analog buffer is capable of compensating the gate-source voltages of turn-on transistors for generating an output voltage having an acceptable tiny offset with respect to an input voltage.

REFERENCES:
patent: 6876235 (2005-04-01), Li
patent: 2004/0183772 (2004-09-01), Nakajima et al.

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