Pixel circuit driving method

A technology of a pixel circuit and a driving method, which is applied in the field of pixel circuit driving

Active Publication Date: 2020-11-27
YUNGU GUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a pixel circuit driving method to improve the display unevenness and afterimage problems caused by insufficient charging time, and improve the display effect of the device

Method used

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Embodiment Construction

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0046] figure 1 It is a circuit diagram of a driving pixel circuit provided in the prior art, refer to figure 1A conventional pixel circuit includes a drive transistor M1, a data voltage write transistor M2, a threshold compensation transistor M3, a first light emission control transistor M5, a second light emission control transistor M6, a first initialization transistor M4, a second initialization transistor M7, a capacitor C and light emitting device D. Wherein, the first pole of the data voltage writing tran...

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Abstract

The embodiment of the invention discloses a pixel circuit driving method, a pixel circuit comprises a driving transistor, and the method comprises the steps: obtaining the theoretical threshold voltage of the driving transistor and the actual threshold voltage of the driving transistor under different gray scales; determining compensation data voltages under different gray scales according to thetheoretical threshold voltage of the driving transistor and the actual threshold voltages under different gray scales; and driving the pixel circuit to emit light according to the compensation data voltage. The problems of current difference and brightness difference caused by insufficient charging time are solved, the phenomena of uneven display and ghost shadows are further improved, and the display effect of the device is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a method for driving a pixel circuit. Background technique [0002] At present, small and medium-sized screen circuits generally use 7T1C internal compensation circuits based on low temperature polysilicon technology LTPS (Low Temperature Poly-silicon). It is used to compensate the drift of thin film field effect transistor (Thin Film Transistor, TFT) uniformity and threshold voltage of driving transistor. [0003] However, in applications with high refresh rate and high resolution, due to the short charging time and insufficient compensation of the threshold voltage of the drive transistor, problems such as uneven brightness and image sticking of low gray scale display are prone to occur. Contents of the invention [0004] An embodiment of the present invention provides a method for driving a pixel circuit, so as to improve the display unevenness a...

Claims

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Application Information

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IPC IPC(8): G09G3/30
CPCG09G3/30G09G2320/0233G09G2320/0257G09G3/3233G09G2300/0819G09G2300/0861G09G2320/043G09G2320/0295G09G2320/0285G09G2310/0251G09G3/3291G09G3/2092G09G2310/027G09G2310/0278
Inventor 王玲盖翠丽米磊
Owner YUNGU GUAN TECH CO LTD
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