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Method of improving slew rate of amplifier circuit and display device using same

A technology of slew rate and driving amplifier, which is applied to the components of the amplifying device, amplifiers, amplifiers with semiconductor devices/discharge tubes, etc., and can solve problems such as output distortion of the driving amplifier

Pending Publication Date: 2022-04-22
MAGNACHIP SEMICONDUCTOR LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] When there is a limit on the slew rate, the output of the driving amplifier may be distorted

Method used

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  • Method of improving slew rate of amplifier circuit and display device using same
  • Method of improving slew rate of amplifier circuit and display device using same
  • Method of improving slew rate of amplifier circuit and display device using same

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Embodiment Construction

[0046] The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent having an understanding of the disclosure of the present application. For example, sequences of operations described herein are examples only, and are not limited to those set forth herein, but may vary as will be apparent after understanding the disclosure of this application, except for operations that must occur in a particular order. Furthermore, descriptions of features that are known in the art may be omitted for increased clarity and conciseness.

[0047] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some...

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Abstract

A method of improving slew rate of an amplifier circuit and a display device using the same are disclosed. An apparatus for increasing a slew rate of a driver amplifier includes a driver amplifier, a slew rate improvement circuit, and a controller. The driver amplifier is configured to amplify an input voltage and output an output voltage. The slew rate improvement circuit is configured to provide or receive a current to increase a slew rate of the driver amplifier. The controller is configured to control operation of the slew rate improvement circuit based on a difference between a first code corresponding to an input voltage of the driving amplifier during a current horizontal line time and a second code corresponding to the input voltage during a next horizontal line time.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit under 35 USC 119(a) of Korean Patent Application No. 10-2020-0134315 filed on October 16, 2020, the entire disclosure of which is incorporated herein by reference for all purposes. technical field [0003] The following description relates to a method for improving the slew rate of an amplifier circuit and a display device using the method. Background technique [0004] As circuits in the display field become larger in size, due to an increase in load capacitance and a decrease in horizontal period, the following phenomenon occurs: the output signal is not output from the driving amplifier immediately in response to the input signal but is output after a certain period of time . [0005] When a large, rapidly changing input signal is applied, the amplifier cannot respond immediately to changes in the input signal and generates an output signal with a maximum rate of change that is v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/2074H03F3/45475H03F1/0205G09G2310/027G09G2310/0291G09G2310/066G09G2320/0673H03F3/211G09G3/3611H03F2203/45248G09G3/3266H03F3/45273H03F2203/45231G09G2310/08
Inventor 金动昊郑喆镐金姬正崔亨植
Owner MAGNACHIP SEMICONDUCTOR LTD