Pixel circuit, pixel circuit driving method and thin film transistor backplane

A technology for driving transistors and pixel circuits, applied in circuits, electrical solid devices, electrical components, etc., can solve problems such as threshold voltage drift of driving transistors, and achieve the effects of eliminating non-uniformity, improving driving effect, and avoiding uneven display brightness.

Active Publication Date: 2014-01-08
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a pixel circuit and its driving method, and a thin film transistor backplane, which are used to solve the problem of threshold voltage drift of the drive transistor when the pixel circuit in the prior art is driven.

Method used

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  • Pixel circuit, pixel circuit driving method and thin film transistor backplane
  • Pixel circuit, pixel circuit driving method and thin film transistor backplane
  • Pixel circuit, pixel circuit driving method and thin film transistor backplane

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] see figure 1 ( figure 1 Among them, 1, 2, 3, 4, and 5 respectively represent the first end, second end, third end, fourth end, and fifth end of the signal loading module; 1`, 2`, 3`, and 4` represent the light-emitting As shown in the first end, second end, third end and fourth end of the control module), the pixel circuit in the embodiment of the present invention is mainly used for driving each organic light emitting diode in an active matrix organic...

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Abstract

The invention relates to the technical field of display, in particular to a pixel circuit, a pixel circuit driving method and a thin film transistor backplane. The pixel circuit comprises a driving transistor, a signal loading module, a light emitting control module and a storage capacitor. The pixel circuit provided by the invention has the advantages that in the light emitting diode driving process, the ghosting phenomenon caused by threshold voltage drift and the heterogeneity caused by the self threshold voltage of the driving transistor are effectively eliminated; the problem of brightness nonuniformity caused by different threshold voltages of the driving transistor among organic light emitting diodes of different pixel units in an active matrix organic light emitting diode display device is avoided; the driving effect of the pixel circuit on organic light emitting diodes is improved, and the display quality of the active matrix organic light emitting diode display device is further improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof, and a thin film transistor backplane. Background technique [0002] Organic Light-Emitting Diode (OLED, Organic Light-Emitting Diode), as a current-mode organic light-emitting diode, has been increasingly used in high-performance active matrix display devices. Traditional passive matrix organic light-emitting diode display devices (Passive Matrix OLED) require shorter driving time of a single pixel with the increase of display size, thus need to increase transient current and increase power consumption. At the same time, the application of high current will cause the voltage drop on the nano-indium tin metal oxide line to be too large, and the working voltage of the OLED will be too high, thereby reducing its efficiency. The active matrix organic light-emitting diode display device (AMOLED, Active Matrix OLED) scans the input OLED curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32H01L27/32
CPCG09G3/3233G09G2300/0861H10K59/123H10K59/131H10K59/1213H10K59/1216G09G3/3258G09G2300/0809G09G2300/0842G09G2320/0219G09G2320/0626
Inventor 尹静文吴仲远王俪蓉
Owner BOE TECH GRP CO LTD
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