Differential amplifier, data driver and display device

A differential amplifier and differential amplification technology, which is applied in the field of differential amplifiers and display devices, can solve problems such as increasing the load capacitance of data lines, increasing the average value of current consumption, increasing the driving frequency of data lines, etc., and achieving suppression of power consumption and reduction of power consumption Effect
CN1595796AInactive Publication Date: 2005-03-16RENESAS ELECTRONICS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
RENESAS ELECTRONICS CORP
Publication Date
2005-03-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A differential amplifier includes a differential amplifying stage and an output amplifying stage. The output amplifying stage includes a first transistor for pull-up, a second transistor for pull-down, a capacitor element, and switches. The first transistor for pull-up is connected across an output terminal and a high potential side power supply VDD and has a control terminal to which is connected a first differential output. The second transistor for pull-down is connected across the output terminal and a low potential side power supply VSS and has a control terminal to which is connected a second differential output. The switches interchangeably connect the capacitor element across the output terminal and the control terminal of the first transistor for pull-up or across the output terminal and the control terminal of the second transistor for pull-down.
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Description

technical field

[0001] The invention relates to a differential amplifier and a display device using the differential amplifier. Background technique

[0002] In recent years, liquid crystal display devices (LCD: Liquid Crystal Device) with advantages of thin size, light weight, and low power consumption have begun to be widely used. The display unit of mobile devices such as notebook PCs (Personal Computers). Recently, however, the technology for increasing the size of the display device and supporting animation is also improving, and not only for mobile use, but also for fixed installation type liquid crystal display devices and large-screen liquid crystal televisions.

[0003] These liquid crystal display devices are used in liquid crystal display devices of an active matrix drive type capable of high-definition display.

[0004] FIG. 28 is a diagram illustrating a liquid crystal display device. In addition, in FIG. 28, only the equivalent circuit of the main structure ...

Claims

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