Pixel circuit, driving method thereof and display device

A technology of a pixel circuit and a driving method, applied in the display field, can solve the problems of the limited adjustable range of the output data voltage of the DataIC, the complexity of the integrated circuit, and the low driving efficiency.

Inactive Publication Date: 2020-10-16
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For Data IC, the more gray levels of the output data voltage, the smaller the voltage difference between adjacent gray levels, the more complex the integrated circuit, and the higher the cost
In addition, the adjustable range of the output data voltage of the Data IC is relatively limited, and it is also difficult to subdivide more data voltages within this limited range.
[0003] It can be seen that there is a technical problem of low driving efficiency in the existing driving method for current-driven display screens.

Method used

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  • Pixel circuit, driving method thereof and display device
  • Pixel circuit, driving method thereof and display device
  • Pixel circuit, driving method thereof and display device

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Embodiment Construction

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. And in the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053]Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. ...

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Abstract

The invention provides a pixel circuit, a driving method thereof and a display device. The driving method of the pixel circuit comprises the steps that a to-be-displayed image is acquired; a gray scale of the to-be-displayed image at each sub-pixel point position is determined; the first data signal input to the first data signal end corresponding to the sub-pixel point position and the second data signal input to the second data signal end are determined according to the gray scale and the corresponding relationship between the first data signal and the second data signal; and the to-be-displayed image is displayed under the control of the first data signal and the second data signal. The method and the device are used for reducing the complexity of a driving chip of the current driving type display screen while considering the gray scale depth.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof and a display device. Background technique [0002] Existing current-driven display screens, such as organic light emitting diode (Organic Light Emitting Diode, OLED) display screens, light emitting diode (Light Emitting Diode, LED) display screens, if greater gray scale depth is to be achieved, in order to To display a more complex picture, the data driver chip (Data IC) is required to output more data voltages with different gray levels. For the Data IC, the more gray levels the output data voltage has, the greater the difference between adjacent gray levels. The smaller the voltage drop, the more complex the integrated circuit and the higher the cost. In addition, the adjustable range of the output data voltage of the Data IC is relatively limited, and it is difficult to subdivide more data voltages within this limited range. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233G09G3/32
CPCG09G3/3233G09G3/32
Inventor 史鲁斌张方振彭宽军赵欣欣
Owner BOE TECH GRP CO LTD
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