Circuit and method for Gamma voltage correction, and display device

A technology for correcting circuits and gamma voltages, applied in static indicators, instruments, etc., to solve problems such as abnormal pictures, different reference voltage values ​​and voltage values

Active Publication Date: 2019-01-18
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a gamma voltage correction circuit, method and display device, aiming to solve the problem that the

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  • Circuit and method for Gamma voltage correction, and display device
  • Circuit and method for Gamma voltage correction, and display device
  • Circuit and method for Gamma voltage correction, and display device

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second" and so...

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Abstract

The invention discloses a circuit and a method for Gamma voltage correction, and a display device. The gamma voltage correction circuit includes a plurality of source drivers, each source driver including a first voltage generation module configured to generate a plurality of reference voltages and output the reference voltages. A first voltage compensation module that generates a plurality of compensation voltages according to a reference voltage and outputs the plurality of compensation voltages; A multiplexing module for outputting one of the multiplexing compensation voltages; An output module for outputting a corresponding data driving signal according to the compensation voltage; And a timing controller for controlling the multiplexing module to select a compensation voltage corresponding to the data driving signal satisfying the equalization condition from among the multiplexing compensation voltages and output the compensation voltage to the output module when it is determinedthat the data driving signal outputted from the output module does not satisfy the picture brightness equalization condition. The invention solves the problem that the voltage value output by two adjacent source drivers is different due to the difference of the reference voltage value, thereby causing picture abnormality.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a gamma voltage correction circuit, method and display device. Background technique [0002] With the development of science and technology, the integration level of the driving structure of the display panel is getting higher and higher, and the reference voltage generating module is also built into each source thin film driving chip. [0003] However, due to differences in semiconductor manufacturing processes, the reference voltage values ​​generated by the reference voltage generating modules in different source thin film driving chips may also be different. The difference in the reference voltage value will cause the output voltage value of two adjacent source electrode thin film driver chips to be different, thus causing an abnormal picture. Contents of the invention [0004] The main purpose of the present invention is to provide a gamma voltage correction circuit, met...

Claims

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Application Information

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IPC IPC(8): G09G3/20G09G3/36
CPCG09G3/20G09G3/3696
Inventor 黄笑宇
Owner HKC CORP LTD
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