Gamma voltage correction circuit, method and display device

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

Active Publication Date: 2021-04-06
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 difference in reference voltage value causes the output voltage value of two adjacent source drivers to be different, thus causing the problem of abnormal picture

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  • Gamma voltage correction circuit, method and display device
  • Gamma voltage correction circuit, method and display device
  • Gamma voltage correction circuit, method 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 present invention discloses a gamma voltage correction circuit, method and display device. The gamma voltage correction circuit includes: a plurality of source drivers, each source driver includes: a first voltage generating module configured to generate a multi-channel reference Voltage and output; the first voltage compensation module generates multiple compensation voltages according to one reference voltage and outputs them; the multi-channel selection module outputs one compensation voltage among the multiple compensation voltages; the output module outputs corresponding data according to the compensation voltage driving signal; and a timing controller, for controlling the multiplex selection module to select the compensation voltage corresponding to the data drive signal satisfying the balance condition from multiple compensation voltages when it is determined that the data drive signal output by the output module does not meet the screen brightness balance condition , and output to the output module. The invention solves the problem that the difference of the reference voltage value causes the output voltage value of two adjacent source drivers to be different, thus causing the problem of abnormal picture.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/36
CPCG09G3/20G09G3/3696
Inventor 黄笑宇
Owner HKC CORP LTD
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