Pixel drive circuit

A technology of pixel drive circuit and capacitor, which is applied in the direction of instruments, static indicators, etc., can solve the problem of panel display uniformity decline, and achieve the effects of improving display uniformity, reducing voltage loss, and reducing current difference

Inactive Publication Date: 2020-01-17
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a pixel driving circuit to solve the technical problem that the display uniformity of the panel decreases due to the punch-through effect in the existing pixel driving circuit

Method used

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  • Pixel drive circuit

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Embodiment Construction

[0019] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0020] The present invention aims at the technical problem that the display uniformity of the panel is reduced due to the punch-through effect in the existing pixel driving circuit, and this embodiment can solve this defect.

[0021] figure 1 It is a circuit diagram of a pixel driving circuit according to an embodiment of the present invention, the pixel driving circu...

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Abstract

A pixel drive circuit includes a driving thin film transistor; the first end of a voltage stabilizing capacitor is connected to the control end of the driving thin film transistor, and the second endof the voltage stabilizing capacitor is connected to the first end of the driving thin film transistor; the first end of a first capacitor is connected to the control end of the driving thin film transistor, and the second end of the first capacitor is connected to the second end of the driving thin film transistor; and the first end of a light-emitting device is connected to the second end of thedriving thin film transistor, and the second end of the light-emitting device is grounded. According to the pixel drive circuit, the voltage stabilizing capacitor is additionally arranged on the gridelectrode of the driving thin film transistor, so that the voltage loss caused by a punch-through effect can be reduced. The display uniformity of a panel is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit. Background technique [0002] Compared with LCD (Liquidcrystal display, liquid crystal display), OLED (organic light-emitting diode) display panel has the unique advantages of self-illumination, and has competitive advantages such as low energy consumption, high contrast, wide color gamut, and foldability. The advantage of power has become the current mainstream display panel. [0003] However, in the existing pixel driving circuit, when the gate thin film transistor is turned off after the charging process is completed, the rapid change of the voltage will cause serious feedthrough (feedthrough) effect, resulting in a decrease in the display uniformity of the panel. Sexual effects are more prominent. Contents of the invention [0004] The present invention provides a pixel driving circuit to solve the technical problem that the display unifo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2310/0264G09G3/3233G09G2300/0852G09G2300/0876G09G2320/0219G09G2320/0233G09G3/3258G09G2300/0809
Inventor 赵隋鑫韩佰祥
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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