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Charging method and device for display panel and display device

A charging method and display panel technology, applied in static indicators, instruments, etc., can solve the problems of longer required time, affecting the display effect of the display panel, and longer compensation time, etc.

Active Publication Date: 2017-08-29
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the size of the display panel becomes larger, the time required for the sense line to gradually charge to the target value will become longer, resulting in a longer compensation time, affecting the compensation effect, and further affecting the display effect of the display panel. It has become a large A constraint on the size of the external compensation of the display panel

Method used

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  • Charging method and device for display panel and display device
  • Charging method and device for display panel and display device
  • Charging method and device for display panel and display device

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Embodiment Construction

[0041] The specific implementations of the method for charging a display panel, the charging device and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] An embodiment of the present invention provides a charging method for a display panel. The display panel includes: a plurality of pixel units; each pixel unit includes a plurality of sub-pixels; each pixel unit corresponds to a gate voltage for sensing pixel switches induction wire; such as figure 1 As shown, the charging method may specifically include:

[0043] S101. Simultaneously charge each sub-pixel in the pixel unit for the first charging time; wherein, each sub-pixel corresponds to a switching transistor used as a pixel switch;

[0044] S102. After performing the first charging time, only charge the target sub-pixel in the pixel unit for not less than the second charging time.

[0045] In the above charging ...

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Abstract

The invention discloses a charging method and a charging device for a display panel and a display device. The charging method comprises the following steps: simultaneously charging sub-pixels in a pixel unit for first charging time; and after the first charging time, only charging the target sub-pixel in the pixel unit for not less than second charging time. Therefore, the charging process is carried out in two stages, namely, in the first stage, TFTs of all the sub-pixels are simultaneously opened for charging for the first charging time, in the second stage, the other sub-pixels are closed, the target sub-pixel is further charged till the target value is achieved, along with the increase of the size of the display panel, the simultaneous charging time and first charging time can be appropriately adjusted, thus the charging speed of the large-size display panel can be improved, the sense time of the display panel can be reduced, the compensation efficiency can be improved, and further, the display effect of the display panel can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a charging method for a display panel, a charging device and a display device. Background technique [0002] At present, in the existing external compensation algorithm of organic electroluminescent display panel (OLED, Organic Light Emitting Diode), by giving a preset data voltage, measuring the current flowing through the sense tube or the charge accumulation on the sense line The voltage is induced to calculate the corresponding data to adjust the data voltage to achieve the effect of compensation. However, when performing external compensation on the OLED display panel, it is necessary to charge the sense line in the compensation circuit, and the charging time is actually limited. When the size of the display panel is small, the charging time is sufficient, and as the display panel The size of the battery is getting bigger and bigger, and the charging time will be more and ...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 王雨
Owner BOE TECH GRP CO LTD
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