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A pixel driving circuit, display device and driving method thereof

A pixel driving circuit and a technology for displaying data, applied in static indicators, instruments, etc., can solve problems such as uneven light emission of OLED display devices

Active Publication Date: 2019-01-04
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a pixel driving circuit, a display device and a driving method thereof, which are used to solve the problem of uneven light emission of OLED display devices caused by different threshold voltages of driving transistors

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  • A pixel driving circuit, display device and driving method thereof
  • A pixel driving circuit, display device and driving method thereof
  • A pixel driving circuit, display device and driving method thereof

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Embodiment Construction

[0033] In order to further explain the pixel driving circuit, the display device and the driving method thereof provided by the embodiments of the present invention, a detailed description will be given below in conjunction with the accompanying drawings of the specification.

[0034] Such as figure 1 As shown, an embodiment of the present invention provides a pixel driving circuit, including a first transistor T1, a second transistor T2, a third transistor T3, an OLED, a driving transistor DTFT, and a storage capacitor C st , Threshold capacitor C vth , Used to provide display data voltage V data Signal input unit; among them,

[0035] Luminous control signal line EM (n) Connected to the gate of the first transistor T1, the first electrode of the first transistor T1 is connected to the high-level output terminal of the power supply, and the second electrode of the first transistor T1 is connected to the first electrode of the second transistor T2 and the driving transistor DTFT. ...

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Abstract

The invention discloses a pixel driving circuit, a display device and a driving method thereof, relates to the field of display technology, and aims to solve the problem of uneven light emission of an OLED display device caused by different threshold voltages of driving transistors. The pixel driving circuit includes a first transistor, a second transistor, a third transistor, an organic light emitting diode, a driving transistor, a storage capacitor, a threshold capacitor and a signal input unit; the light emission control signal line is used to control the on and off of the first transistor, The first scanning signal line is used to control the turn-on and cut-off of the second transistor and the third transistor, and the driving transistor is used to generate a driving current for driving the OLED to emit light, so that the formed OLED display device goes through a reset stage, a threshold compensation stage, and a display. The display data writing stage and the display stage are used to achieve the purpose of uniform display brightness of the OLED display device. The pixel driving circuit provided by the invention is used in the field of OLED display.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a display device and a driving method thereof. Background technique [0002] With the continuous improvement of the quality of life, consumers have put forward higher and higher requirements for the display effect of display devices; in order to meet this demand of consumers, manufacturers have developed and produced Organic Light Emitting Diode (OLED). ) Display device. OLED display devices can be divided into active drive type OLED display devices and passive drive type OLED display devices according to different driving methods; among them, the active drive type OLED display device includes a driving transistor array for driving the OLED to emit light. The driving transistor correspondingly drives the OLED in the OLED display device to emit light to realize the self-luminous function of the OLED display device. [0003] However, there are certain i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G2300/0861G09G2300/0876G09G2310/0262G09G2320/043G09G3/3233G09G2300/0819G09G2300/0852G09G2320/0233
Inventor 青海刚祁小敬
Owner BOE TECH GRP CO LTD