Pixel drive units, drive method thereof, and pixel circuit

A driving unit and driving sub-circuit technology, which is applied in the direction of instruments, static indicators, etc., can solve the problems of low pixel circuit production yield and complex pixel circuit structure, so as to improve the driving effect, simplify the overall structure, and improve the yield rate. Effect

Inactive Publication Date: 2013-12-11
BOE TECH GRP CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in order to eliminate the influence caused by the threshold voltage difference of the driving transistor in the existing AMOLED pixel circuit, the structural design of the pixel circuit is usually more complex, which will directly lead to a decrease in the production yield of the AMOLED pixel circuit.

Method used

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  • Pixel drive units, drive method thereof, and pixel circuit
  • Pixel drive units, drive method thereof, and pixel circuit
  • Pixel drive units, drive method thereof, and pixel circuit

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Embodiment Construction

[0031] 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.

[0032] see figure 1 As shown, this embodiment provides a pixel driving unit, including a driving subcircuit and a control subcircuit; wherein, the input end of the control subcircuit is connected to the data line DATA, and the input end of the driving subcircuit is connected to the control subcircuit. output of the circuit.

[0033] The control sub-circuit includes a control transistor Tc; wherein, the gate of the control transistor Tc is connected to the dat...

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Abstract

The invention relates to the technical field of display, in particular to pixel drive units, a drive method of the pixel drive units, and a pixel circuit comprising the pixel drive units. The pixel drive units comprise drive sub circuits and control sub circuits. The control sub circuits are connected with data lines, and the drive sub circuits are connected with the control sub circuits. The pixel drive units effectively eliminate heterogeneity caused by the threshold voltages of drive transistors and the shadow phenomenon caused by threshold voltage drifting in the process of driving light-emitting devices. The uneven brightness problem of an active matrix OLED due to the fact that the threshold voltages of the drive transistors of the light-emitting devices of the different pixel drive units in the active matrix OLED are different is avoided, the drive effect of the pixel drive units on the light-emitting devices is improved, and quality of the active matrix OLED is further improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving unit, a driving method thereof, and a pixel circuit including the pixel driving unit. Background technique [0002] Organic Light-Emitting Diode (OLED, Organic Light-Emitting Diode), as a current-mode light-emitting device, has been increasingly used in high-performance active-matrix light-emitting organic electroluminescent display tubes. Traditional passive matrix organic electroluminescent display tubes (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 electroluminescent display tube ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/3233G09G2300/0842G09G2320/0233G09G2320/045
Inventor 马占洁
Owner BOE TECH GRP CO LTD
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