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Amplifier, liquid crystal displaying driving circuit and liquid crystal display apparatus

An amplifier and circuit technology, applied in amplifiers, differential amplifiers, DC-coupled DC amplifiers, etc., can solve problems such as amplifier slew rate drop

Inactive Publication Date: 2013-01-16
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that if the power consumption of the amplifier in the LCD driver circuit is reduced, the slew rate of the amplifier decreases

Method used

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  • Amplifier, liquid crystal displaying driving circuit and liquid crystal display apparatus
  • Amplifier, liquid crystal displaying driving circuit and liquid crystal display apparatus
  • Amplifier, liquid crystal displaying driving circuit and liquid crystal display apparatus

Examples

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Embodiment Construction

[0022] refer to figure 1 , discloses a liquid crystal display device 1 according to an embodiment of the present technology. The liquid crystal display device 1 includes a liquid crystal display section 11 , a horizontal drive circuit 12 including a plurality of source driver circuits 2 , a vertical drive circuit 13 including a plurality of gate driver circuits 3 , an interface circuit 14 and a gradation power supply 15 .

[0023] Although not shown, the liquid crystal display section 11 includes a semiconductor substrate on which transparent pixel electrodes and TFTs (Thin Film Transistors) are arranged, and an opposite plate on which transparent electrodes covering the entire display section are formed. The liquid crystal is sealed between the substrates. Each TFT has a switching function controlled by the horizontal driving circuit 12 and the vertical driving circuit 13 to apply a driving signal to the pixel electrode so that a potential difference occurs between the pixel...

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PUM

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Abstract

Disclosed herein is an amplifier including a voltage follower circuit having differential input terminals and an output terminal fed back to a first one of the differential input terminals, the voltage follower circuit being configured to amplify an input signal inputted to a second one of the differential input terminals and output the amplified signal from the output terminal; a first current source configured to supply a predetermined current to the voltage follower circuit; and a second current source configured to supply current to the voltage follower circuit when a potential difference between the second one of the differential input terminals and the output terminal is equal to or higher than a predetermined value.

Description

technical field [0001] The present disclosure relates to an amplifier, a liquid crystal display drive circuit and a liquid crystal display device. Background technique [0002] As a display device, a liquid crystal display device (LCD: Liquid Crystal Display Device) has been widely used. In a liquid crystal display portion of a liquid crystal display device, a plurality of pixels configured by transistors, diodes, and the like are provided. The pixels are driven by a liquid crystal display drive circuit to display images on the liquid crystal display portion. The liquid crystal display driving circuit includes a plurality of amplifiers, and a driving signal amplified by each amplifier is applied to pixels of each line to drive the pixels. [0003] In recent years, liquid crystal display devices are required to have larger screens and higher definition, and are also expected to have reduced power consumption. Improvements to liquid crystal display devices to increase scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36H03F3/45
CPCH03F3/3022H03F2203/45466H03F2203/45471G09G3/3688G09G2310/0291H03F3/45183
Inventor 岸川祯介
Owner SONY CORP
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