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Pixel driving circuit, driving method, array substrate and display device

A technology of a pixel driving circuit and a driving method, which is applied in the fields of array substrates, display devices, driving methods and pixel driving circuits, can solve the problems of reducing the lifespan of OLED display panels, reducing the lifespan of driving TFTs, etc., so as to avoid the influence of luminous brightness and ensure The effect of brightness uniformity

Active Publication Date: 2017-05-10
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, during the working process of the OLED, the driving TFT is always in the conduction state, and long-time work will reduce the life of the driving TFT, and correspondingly reduce the life of the OLED display panel.

Method used

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  • Pixel driving circuit, driving method, array substrate and display device
  • Pixel driving circuit, driving method, array substrate and display device
  • Pixel driving circuit, driving method, array substrate and display device

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present disclosure, but not all of the embodiments.

[0034] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intervening device between the specific device and the first device or the second device; when describing When a specific device is connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but has an intermediate device.

[0035] figure 1 is a circuit diagram schematically illustrating a conventional 2T1C drive circuit for OLEDs. Such as figure 1 As shown, the 2T1C driving circuit includes a switching trans...

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Abstract

Provided are a pixel driving circuit, a driving method, an array substrate and a display device. The first driving component in the pixel driving circuit includes: a first switch unit, which is turned on or off according to the first scan signal to control the transmission of data signals; a first charging unit, the first end of which is connected to the first switch. The second end of the unit is connected; the first driving unit, its control end is connected to the second end of the first charging unit, its first end is connected to the first power supply via the light emitting device, and its second end is connected to the second power supply ; The first drive compensation unit is used to generate a predetermined voltage at the control end of the first drive unit during the period when the first scan signal turns on the first switch unit, and use the predetermined voltage to cause the current to flow through the light-emitting device It has nothing to do with the threshold voltage of the first driving unit. In the technical solutions according to the embodiments of the present disclosure, the influence of the threshold voltage of the driving transistor on the light-emitting brightness is avoided, ensuring the brightness uniformity of the light-emitting device.

Description

technical field [0001] The present disclosure relates to the field of display technology, and more specifically, to a pixel driving circuit, a driving method, an array substrate and a display device. Background technique [0002] With the advancement of display technology, light emitting diode (light emitting diode, LED) display panels are gradually entering the market, which typically include active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, AMOLED). Compared with the traditional liquid crystal display (Liquid Crystal Display, LCD) technology, AMOLED display has faster response speed, higher contrast ratio and wider viewing angle, and does not require a backlight unit, so AMOLED display is considered to be the next generation display technology . In AMOLED, the light-emitting device is an organic light-emitting diode (Organic Light-Emitting Diode, OLED). Driven by the AMOLED driving circuit, when a current flows through the light emit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2300/0814G09G2300/0819G09G2320/045
Inventor 胡祖权
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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