Set voltage generation unit, set voltage generation method, and display device

A voltage generation unit and voltage generation circuit technology, applied in static indicators, instruments, etc., can solve the problems of compensation error, poor compensation display effect, etc., and achieve the effect of eliminating compensation error, ensuring compensation display effect, and good compensation display effect.

Active Publication Date: 2019-05-31
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a set voltage generation unit, a set voltage generation method and a display device, which solve the problem in the prior art that compensation errors are caused by gamma main voltage fluctuations, resulting in poor compensation and display effects

Method used

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  • Set voltage generation unit, set voltage generation method, and display device
  • Set voltage generation unit, set voltage generation method, and display device
  • Set voltage generation unit, set voltage generation method, and display device

Examples

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Embodiment approach

[0116] According to a specific implementation manner, the voltage dividing circuit may include a first voltage dividing resistor and a second voltage dividing resistor, wherein,

[0117] The first end of the first voltage dividing resistor is connected to the gamma main voltage, and the second end of the first voltage dividing resistor is connected to the non-inverting input end of the operational amplifier circuit;

[0118] The first terminal of the second voltage dividing resistor is connected to the positive phase input terminal, and the second terminal of the second voltage dividing resistor is connected to the first voltage terminal;

[0119] The resistance value of the first voltage dividing resistor and the resistance value of the second voltage dividing resistor can be adjusted.

[0120] The first voltage terminal is used to input the first voltage V1; in specific implementation, the first voltage terminal may be a ground terminal or a low voltage terminal, but not lim...

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PUM

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Abstract

The invention provides a set voltage generation unit, a set voltage generation method and a display device. The setting voltage generation unit comprises a voltage generation circuit; and the voltagegeneration circuit is used for generating a setting voltage according to the gamma main voltage, so that the ratio of the variation of the setting voltage to the variation of the gamma main voltage isa voltage coefficient K, and the K is a positive number smaller than or equal to 1. Compensation errors caused by gamma main voltage fluctuation can be eliminated, and a good compensation display effect is guaranteed.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a set voltage generation unit, a set voltage generation method and a display device. Background technique [0002] During the working process of the OLED display device, affected by external factors (mainly temperature) and the instability of its own circuit, the gamma main voltage AVDD will produce a change amount V0, which will affect the stability of the gamma voltage and cause the output of the data drive circuit The real-time data voltage Vdata produces a variation V01 accordingly. In the existing pixel circuit with compensation function, the set voltage V PRESL It is a stable voltage value. During compensation detection, the gate-source voltage of the driving transistor in the pixel circuit is Vdata+V1-V PRESL , which in turn will cause compensation errors, resulting in poor compensation display effects. Contents of the invention [0003] The main purpose of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G2330/028G09G2320/0219G09G2320/0209G09G2320/0233G09G2320/0673G09G3/3233G09G2300/0842G09G2320/0295G09G3/3258G09G2310/027
Inventor 何敏鲍文超曹春陈伟
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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