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Gamma voltage regulating circuit and method for driving chip, and AMOLED display

A voltage adjustment circuit and driver chip technology, applied in static indicators, instruments, TVs, etc., can solve the problems of display brightness changes and inconsistent regional display effects, and achieve the effect of solving brightness changes and improving display quality.

Inactive Publication Date: 2016-07-20
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Gamma voltage adjustment circuit and a Gamma voltage adjustment method of a driver chip and an AMOLED display, to solve the problem of display brightness changes or inconsistent display effects in various regions due to changes in ELVDD

Method used

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  • Gamma voltage regulating circuit and method for driving chip, and AMOLED display
  • Gamma voltage regulating circuit and method for driving chip, and AMOLED display
  • Gamma voltage regulating circuit and method for driving chip, and AMOLED display

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Embodiment Construction

[0029] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.

[0030] Secondly, the present invention is described in detail by means of schematic diagrams. When describing the examples of the present invention in detail, for the convenience of illustration, the schematic diagrams are not partially enlarged according to the general scale, which should not be used as a limitation of the present invention.

[0031] The core idea of ​​the present invention is that a digital-to-analog conversion unit, a logic judgment unit, a voltage regulation unit, and a Gamma generation unit are set in the Gamma voltage adjustment circuit of the...

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Abstract

The invention provides a gamma voltage regulating circuit and a gamma voltage regulating method for a driving chip, and an AMOLED display. The gamma voltage regulating circuit for the driving chip comprises a digital-to-analog conversion unit, a logic judgment unit, a voltage regulating unit and a gamma generating unit. The driving chip in the AMOLED display is connected with an ELVDD power line, so that the ELVDD power supply voltage input to the driving chip. The digital-to-analog conversion unit converts a voltage signal into a digital signal. The logic judgment unit judges the variation of the ELVDD power supply voltage according to the digital signal and then generates a regulating signal. The voltage regulating unit generates a corresponding regulation voltage. The gamma generating unit is used for regulating the gamma voltage. In this way, the problem in the prior art that due to the variation of the ELVDD power supply voltage, the brightness variation of the display and the display effect of each display region are not uniform can be solved. Meanwhile, the display quality is improved.

Description

technical field [0001] The invention relates to the field of flat panel display, in particular to a Gamma voltage adjustment circuit and method for driving chips and an active array organic light emitting display. Background technique [0002] Active array organic light emitting displays (AMOLEDs) are active light emitting devices. Compared with the current mainstream flat panel display technology Thin Film Transistor Liquid Crystal Display (TFT-LCD), AMOLED display has the advantages of high contrast, wide viewing angle, low power consumption, and thinner thickness. [0003] figure 1 A schematic diagram of the structure of a traditional AMOLED display, such as figure 1 As shown, the AMOLED display includes a display area 1 and a non-display area 2 surrounding the display area 1, a number of regularly arranged pixel units 3 are arranged in the display area 1, and a driver chip (DriverIC) 4 is arranged on the non-display area 2, The driving chip 4 is used for providing a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G3/3233G09G3/3291G09G2310/027G09G2320/0673G09G2300/0828G09G3/3258G09G2320/0233H04N5/202
Inventor 王龙川岛进吾朱修剑葛明伟
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD