Gamma voltage adjusting device of display panel and display device of display panel

A gamma voltage and adjusting device technology, applied in static indicators, instruments, etc., can solve problems such as uneven display of the screen, and achieve the effect of reducing the unevenness of the display screen

Active Publication Date: 2014-07-23
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An embodiment of the present invention provides a gamma voltage adjustment device and a display device for a display panel, which are used to solve the problem of uneven display of large-sized display panels due to uneven distribution of public voltages

Method used

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  • Gamma voltage adjusting device of display panel and display device of display panel
  • Gamma voltage adjusting device of display panel and display device of display panel
  • Gamma voltage adjusting device of display panel and display device of display panel

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Embodiment Construction

[0030] The specific implementation manners of the device for adjusting the gamma voltage of the display panel and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] An embodiment of the present invention provides a gamma voltage adjustment device for a display panel, such as figure 1 As shown, the display panel is divided into at least two display areas 100, and the gamma voltage adjusting device includes: source drivers 200 corresponding to each display area 100 of the display panel, and for providing target gamma voltages to each source driver 200 The gamma voltage adjustment circuit 300; wherein,

[0032] The target gamma voltage is generated by the gamma voltage adjustment circuit 300 after performing voltage translation adjustment according to a preset voltage translation amplitude value.

[0033] The above-mentioned gamma voltage adjustment device provided by the...

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PUM

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Abstract

The invention discloses a gamma voltage adjusting device of a display panel and a display device of the display panel. Due to the fact that for each display area of the display panel, a target gamma voltage is generated through level shifting on a gamma voltage adjusting circuit according to a preset voltage level shifting amplitude value, for multiple display areas, different in Vcom voltage, in a large-sized display panel, the gamma voltage of each display area can be adjusted according to the preset voltage level shifting amplitude value to reach the target gamma voltage; in this way, the problem that because the Vcom voltage is not even, a display image is not even is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a gamma voltage adjusting device of a display panel and a display device. Background technique [0002] The function of the Gamma voltage generation circuit is to set the Gamma voltage according to the Gamma curve required by the liquid crystal display, and use it as the voltage for the grayscale display of the thin film transistor liquid crystal display. Each Gamma voltage converts the digital signal generated by the timing controller into an analog signal corresponding to the grayscale voltage under the action of the digital-to-analog converter of the source driver and inputs it to the liquid crystal display panel. [0003] The liquid crystal display realizes image display through the grayscale voltage input by the source driver and the common (Vcom) voltage, and the grayscale voltage is mainly determined by the Gamma voltage and the corresponding grayscale bit. The grayscale ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 张智
Owner BOE TECH GRP CO LTD
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