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Pixel driving circuit voltage compensation method, voltage compensation circuit and display panel

A pixel drive circuit and voltage compensation technology, which is applied in the OLED field, can solve problems such as inaccurate pixel drive circuit voltage compensation technology, and achieve the effect of improving display uniformity and accuracy

Active Publication Date: 2021-08-03
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a pixel drive circuit voltage compensation method, a voltage compensation circuit and a display panel for the inaccurate problem of the traditional pixel drive circuit voltage compensation technology.

Method used

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  • Pixel driving circuit voltage compensation method, voltage compensation circuit and display panel
  • Pixel driving circuit voltage compensation method, voltage compensation circuit and display panel
  • Pixel driving circuit voltage compensation method, voltage compensation circuit and display panel

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Embodiment Construction

[0046] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0047] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "mounted", "one end", "the other end" and similar expressions are used herein for the purpose of description only.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commo...

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Abstract

The present application relates to a voltage compensation method for a pixel driving circuit, a voltage compensation circuit and a display panel; the method includes obtaining the gate voltage and the source voltage of the driving TFT corresponding to the pixel driving circuit when the pixel driving circuit is reset, And collect the voltage difference across the resistor connected to the sensing line of the pixel drive circuit; according to the gate voltage, source voltage, voltage difference, resistance value of the resistor, the threshold voltage of the driving TFT and the initial mobility of the pixel drive circuit, The compensation voltage is obtained; the compensation voltage is written into the corresponding data line on the pixel driving circuit. By collecting the voltage difference across the resistor connected to the sensing line, and obtaining the compensation voltage of the pixel driving circuit based on the voltage difference, the accuracy of the compensation voltage is improved, thereby improving the display uniformity of the display panel.

Description

technical field [0001] The present application relates to the technical field of OLED, in particular to a voltage compensation method for a pixel driving circuit, a voltage compensation circuit and a display panel. Background technique [0002] During the working process of the OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) panel, TFT (Thin Film Transistor, thin film transistor) is used as the display switch of the OLED panel, and the display uniformity of the OLED panel is closely related to the electrical characteristics of the TFT. However, the electrical characteristics of TFT will be affected by aging, light, temperature, etc. Since the display brightness of OLED is closely related to the current flowing when TFT is turned on, the drift of electrical characteristics of TFT will cause uneven display of OLED panel. [0003] At present, in the pixel driving circuits of medium-sized and large-sized OLED panels, external detection and compensation are usua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 赵隋鑫
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD