Differential amplifier, data driver and display device

Details Differential amplifier, data driver and display device Differential amplifier, data driver and display device

2006-12-14

2009-02-24

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C345S690000

Reexamination Certificate

active

07495512

ABSTRACT:
A differential amplifying circuit capable of reducing amplitude-difference deviation over a full range of grayscale voltages inclusive of voltages in the vicinity of power-supply voltage includes first and second differential pairs of mutually different polarities, in which the outputs of the differential pairs are coupled by a coupling stage. One of the first and second differential pairs receives an input signal from an input terminal and a feedback signal from an output terminal at a pair of inputs thereof, and the other differential pair receives reference signals (which may be of the same voltage), which have voltage levels that set the other differential pair transistors to an on-state, at a pair of inputs of the other differential pair.

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patent: 5311145 (1994-05-01), Huijsing
patent: 6441763 (2002-08-01), Nakao
patent: 6535189 (2003-03-01), Akiyama
patent: 6717468 (2004-04-01), Jeong et al.
patent: 2005/0088390 (2005-04-01), Tsuchi
patent: 6-326529 (1994-11-01), None
patent: 2001-34234 (2001-02-01), None
patent: 2002-43944 (2002-02-01), None
patent: 2005-130332 (2005-05-01), None

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