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Array substrate, driving method thereof, electroluminescent display panel and display device

A technology of array substrates and light-emitting devices, applied in static indicators, instruments, etc., can solve the problems of unfavorable high resolution of OLED displays and large area occupied by pixel circuits, and achieve simplified structure, high resolution and high resolution Effect

Inactive Publication Date: 2018-08-17
BOE TECH GRP CO LTD
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Problems solved by technology

[0003] Embodiments of the present invention provide an array substrate, its driving method, an electroluminescence display panel, and a display device, to solve the problem in the prior art that pixel circuits occupy a relatively large area, which is not conducive to the realization of high resolution of OLED displays

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  • Array substrate, driving method thereof, electroluminescent display panel and display device
  • Array substrate, driving method thereof, electroluminescent display panel and display device
  • Array substrate, driving method thereof, electroluminescent display panel and display device

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Embodiment Construction

[0033] Due to reasons such as process technology and device aging, the threshold voltage V of the driving transistor in the pixel circuit will be th Inhomogeneity exists while driving the carrier mobility μ of the transistor n It also changes according to the change of temperature, which leads to differences in the display brightness uniformity of the display screen under the same gray scale input, thus affecting the display effect of the entire image. At present, there are two ways of internal compensation and external compensation to compensate the threshold voltage V of the driving transistor th and the carrier mobility μ n . However, due to the existing internal compensation for the drive transistor threshold voltage V th The compensation range of is small, and for the carrier mobility μ n The compensation effect is poor. While the external compensation can affect the drive transistor threshold voltage V th and the carrier mobility μ n can be well compensated.

[0...

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Abstract

The invention discloses an array substrate, a driving method thereof, an electroluminescent display panel and a display device. The array substrate comprises luminescent devices, pixel circuits coupled to the luminescent devices and voltage control circuits. At least two pixel circuits in the same row share one voltage control circuit, under control of a control signal input end, the voltage control circuit provides a signal of a high-level power supply end for the first pole of each coupled driving transistor, the structure of each pixel circuit is simplified, the occupation area of the pixelcircuit is reduced, and the electroluminescent display panel can realize a high resolution. In addition, the grid voltage is written into the driving transistors and the voltage is written into the second poles of the driving transistors more accurately.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an array substrate, a driving method thereof, an electroluminescent display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) display is one of the hotspots in the field of flat panel display research today. Compared with Liquid Crystal Display (LCD), OLED display has low energy consumption, low production cost, self-illumination, wide Viewing angle and fast response speed etc. advantages. Currently, OLED displays have begun to replace traditional LCD displays in display fields such as mobile phones and digital cameras. Among them, the pixel circuit design for controlling OLED light emission is the core technical content of OLED display, which has important research significance. However, the number of switching transistors included in the pixel circuit of the existing OLED display is relatively large and the circuit operation sequen...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
Inventor 徐攀盖翠丽林奕呈王玲
Owner BOE TECH GRP CO LTD
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