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AMOLED pixel driving circuit and pixel driving method

A pixel drive circuit, low potential technology, applied in the direction of instruments, static indicators, etc., can solve the problems of short service life, uneven brightness of organic light-emitting diode OLED, etc., to achieve the effect of solving uneven brightness and short service life

Active Publication Date: 2016-03-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an AMOLED pixel driving circuit and a pixel driving method, through which the defects of uneven brightness and short service life of organic light emitting diodes (OLEDs) can be solved.

Method used

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  • AMOLED pixel driving circuit and pixel driving method
  • AMOLED pixel driving circuit and pixel driving method

Examples

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Embodiment Construction

[0024] figure 1 A schematic diagram of a pixel unit array on a substrate of an AMOLED display panel in the prior art is shown. figure 2 An equivalent circuit diagram of a "2T1C" pixel unit of an AMOLED display panel in the prior art is shown.

[0025] like figure 1 Shown is a schematic diagram of a pixel unit array on a substrate of an AMOLED display panel in the prior art. The pixel unit array on the substrate is defined by the intersection of multiple scanning lines Gn-1, Gn, Gn+1... and multiple data lines Dn-1, Dn, Dn+1... The pixel unit is composed. The pixel units here are usually sub-pixel units of three primary colors (marked as R, G, B in the figure) used for color display. Each sub-pixel unit is correspondingly connected to a scanning line and a data line, and adopts a "2T1C" circuit structure. Among them, "2T" refers to the thin film transistors Ta and Tb. "1C" is the storage capacitor Cs. like figure 2 As shown, the circuit structure is specifically descr...

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Abstract

The invention discloses an AMOLED pixel driving circuit and a pixel driving method. The AMOLED pixel driving circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a capacitor and an organic light emitting diode (OLED). According to the AMOLED pixel driving circuit and the pixel driving method, common potential of OLED loop ends of adjacent two pixel units can be subjected to alternative pulse drive, only one OLED emits light for display in the same frame time, the energy utilization efficiency is improved, causes of aging of the OLED can be eliminated completely, the service life of the OLED is prolonged greatly, influences on light-emitting current by line internal resistance are eliminated, and the picture display quality is improved.

Description

technical field [0001] The present invention generally relates to the field of display technology, and more specifically, relates to an AMOLED pixel driving circuit and a pixel driving method. Background technique [0002] The Organic Light Emitting Display (OLED) display device has many advantages such as self-illumination, ultra-thinness, wide viewing angle, low power consumption and bendability, and is recognized by the industry as the display device with the most development potential. [0003] Compared with the liquid crystal display device TFT-LCD, AMOLED not only needs to use a switching transistor, but also needs to use a driving transistor, and the current generated by the driving transistor in a saturated state drives the organic light-emitting diode to emit light. Generally, in a row-by-row scan mode, the switching transistor connected to the row scanning line on each row is sequentially turned on through the signal on the row scanning line, so that the voltage si...

Claims

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Application Information

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IPC IPC(8): G09G3/3233G09G3/3266
CPCG09G3/3233G09G3/3266
Inventor 徐向阳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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