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Driving method and device of display panel

A technology of display panel and driving method, applied in static indicators, instruments, etc., can solve the problems of performance difference, poor brightness uniformity of display panel, reduced experience effect, etc., to reduce leakage current phenomenon, improve brightness uniformity, reduce The effect of glowing current differences

Active Publication Date: 2021-03-12
KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
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AI Technical Summary

Problems solved by technology

Due to the performance difference of the transistors that make up the pixel circuit in the display panel, the brightness uniformity of the display panel is relatively poor, which reduces the user experience effect

Method used

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  • Driving method and device of display panel
  • Driving method and device of display panel
  • Driving method and device of display panel

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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 partial structural schematic diagram of an existing pixel circuit. Such as figure 1 As shown, the pixel circuit includes a driving transistor DTFT, a switching transistor STFT and a light emitting diode D1. In the initialization phase, the switch transistor STFT is turned on, and the initialization voltage VREFN is transmitted to the anode of the light emitting diode D1 to initialize the light emitting diode D1. In the light emitting stage, the driving transistor DTFT forms a driving cur...

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Abstract

The invention discloses a driving method and device of a display panel. The display panel comprises a pixel circuit. The method comprises the following steps: setting a first initialization voltage according to a display brightness value; and providing a first initialization voltage to the pixel circuit, and initializing a light emitting module in the pixel circuit. The first initialization voltage is set according to the display brightness value, when the display brightness value is relatively low, the first initialization voltage is set to be relatively high, and in the light emitting stageof the pixel circuit, the leakage current of the driving current by providing the initialization voltage to a transistor of a light emitting device can be reduced, so that the leakage current phenomenon in the pixel circuit can be reduced, the current difference, caused by the leakage current characteristic of the transistor, of the pixel circuit for driving the light emitting device to emit lightis reduced, and the brightness uniformity of the display panel is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technologies, and in particular, to a method and device for driving a display panel. Background technique [0002] As users have higher requirements on the display performance of display devices, the requirements on brightness uniformity of display panels are getting higher and higher. Due to the difference in performance of the transistors forming the pixel circuit in the display panel, the brightness uniformity of the display panel is relatively poor, which reduces the experience effect of the user. Contents of the invention [0003] The invention provides a method and device for driving a display panel to improve the brightness uniformity of the display panel. [0004] In a first aspect, an embodiment of the present invention provides a method for driving a display panel, where the display panel includes a pixel circuit; the method includes: [0005] setting the first initializa...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0233G09G2320/0626
Inventor 翁敏
Owner KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT
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