Invention Grant
- Patent Title: Differential amplifier and drive circuit of display device using the same
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Application No.: US12382170Application Date: 2009-03-10
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Publication No.: US08390609B2Publication Date: 2013-03-05
- Inventor: Hiroshi Tsuchi
- Applicant: Hiroshi Tsuchi
- Applicant Address: JP Kawasaki-shi, Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kawasaki-shi, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2008-061781 20080311
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
Disclosed is a differential amplifier of the present invention includes a differential pair differentially receiving a signal, a current source connected between a first voltage supply and the differential pair, for driving the differential pair, a current-to-voltage converter circuit receiving output currents of the differential pair and producing first and second voltage signals, first and second transistors of mutually different conductivity types connected in series between the first voltage supply and a second voltage supply and respectively receiving the first and second voltage signals at control terminals thereof, a third transistor connected between the second voltage supply and an output terminal and receiving the first voltage signal at a control terminal thereof, and a fourth transistor of the same conductivity type as that of the third transistor, the fourth transistor being connected between the output terminal and the first voltage supply and having a control terminal thereof connected to a connecting node between the first and second transistors.
Public/Granted literature
- US20090231319A1 Differential amplifier and drive circuit of display device using the same Public/Granted day:2009-09-17
Information query