Unlock instant, AI-driven research and patent intelligence for your innovation.

Pixel circuit and pixel driving method

A driving method and pixel circuit technology, applied to instruments, static indicators, etc., can solve problems such as display abnormal compensation effect, failure, etc.

Active Publication Date: 2011-11-16
AU OPTRONICS CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to achieve the purpose of effectively compensating the pixel current of the pixel circuit, it is necessary to reasonably design the structural configuration of the pixel circuit and the driving method of the pixel circuit, otherwise, abnormal display or compensation effect failure will easily occur during the working process of the display.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pixel circuit and pixel driving method
  • Pixel circuit and pixel driving method
  • Pixel circuit and pixel driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] see figure 2 and image 3 , figure 2 A partial structural block diagram of an active matrix organic light emitting diode display related to the first embodiment of the present invention is drawn, image 3 A timing diagram of scan signals and data voltages related to the pixel driving method of the first embodiment of the present invention is shown.

[0043] Such as figure 2 As shown, the active matrix OLED display 20 includes a data drive circuit 22, a demultiplexer 24, data lines DLi˜DLk, scan lines Scan(N-1) and Scan(N), scan lines EM(N- 1) and EM(N), and a plurality of pixel circuits P(n-1)i~P(n-1)k and Pni~Pnk; each pixel circuit P(n-1)i~P(n-1) k and Pni~Pnk are respectively electrically coupled to respective scan lines Scan(N-1) and Scan(N), scan lines EM(N-1) and EM(N) and data lines DLi~DLk, and are arranged in a matrix The pattern is arranged in the Rn-1 and Rn pixel rows and the Ci-Ck pixel columns. The data driving circuit 22 is used to provide the da...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pixel circuit, which comprises an organic light-emitting diode, a storage capacitor, a drive transistor, a first switching transistor, a second switching transistor, a third switching transistor and a fourth switching transistor, wherein the drive transistor is used for driving the organic light-emitting diode to illuminate; a first source / drain electrode of the drive transistor is electrically coupled to one end of the storage capacitor, a second source / drain electrode is electrically coupled to the organic light-emitting diode, and a grid electrode receives data voltage through the first switching transistor; the grid electrode turn-on voltages of the first switching transistor and the second switching transistor have reverse phases, and the on / off states of the two are determined by the same control signal; and similarly, the grid electrode turn-on voltages of the third switching transistor and the fourth switching transistor have reverse phases, and the on / off states of the two are determined by the same control signal. The invention also provides a pixel driving method for the pixel circuit.

Description

technical field [0001] The present invention relates to the technical field of OLED display, and in particular to a pixel circuit and a pixel driving method. Background technique [0002] Pixels of an active matrix OLED (Organic Light Emitting Diode, OLED) display generally use transistors and storage capacitors to store charges to control the brightness of the OLED. See figure 1 , which is a schematic diagram of a conventional pixel circuit. The pixel circuit 10 is a two-transistor-one-capacitor (2T1C) structure, which includes a P-type driving transistor M1 , a P-type switching transistor Ms, a storage capacitor Cst, and an organic light emitting diode 16 . Both ends of the storage capacitor Cst are connected between the gate and the source of the driving transistor M1; the source of the driving transistor M1 is electrically coupled to the power supply voltage VDD, and the drain of the driving transistor M1 is electrically coupled to the organic light emitting diode. Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/3266G09G3/3275
Inventor 刘俊彦吴元均
Owner AU OPTRONICS CORP