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

AMOLED (active matrix/organic light emitting diode) pixel driving circuit

A capacitor and thin film transistor technology, applied in the field of AMOLED pixel drive circuit, can solve the problems of AMOLED display quality degradation, inconsistent Vth and Vdd, voltage loss, etc., and achieve the effect of improving AMOLED display effect

Inactive Publication Date: 2014-07-09
SICHUAN CCO DISPLAY TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current AMOLED pixel drive circuit realizes the compensation of the threshold voltage Vth, the power supply voltage Vdd will have a voltage loss along with the wiring, which makes the Vth and Vdd of each pixel inconsistent, resulting in a decline in AMOLED display quality

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
  • AMOLED (active matrix/organic light emitting diode) pixel driving circuit
  • AMOLED (active matrix/organic light emitting diode) pixel driving circuit
  • AMOLED (active matrix/organic light emitting diode) pixel driving circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Aiming at the deficiencies of the traditional technology, the invention proposes a novel AMOLED pixel driving circuit to improve the display quality of the AMOLED panel. Compared with the traditional technology, its improvement points are: all P-type thin film transistors are used to make the whole circuit more stable; the method of matching DTFT is used to realize simultaneous compensation of threshold voltage Vth and external input voltage Vdd, thereby effectively improving the display effect of AMOLED.

[0014] Such as image 3 As shown, the AMOLED pixel driving circuit in the present invention includes an organic light-emitting diode OLED, a capacitor C, a first P-type thin film transistor PTFT1, a second P-type thin-film transistor PTFT2, a third P-type thin-film transistor PTFT3, and a fourth P-type thin-film transistor. The transistor PTFT4, the fifth P-...

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 relates to an electronic circuit technique, and in particular relates to an AMOLED (active matrix / organic light emitting diode) pixel driving circuit. 7 P-type thin film transistors and a capacitor are adopted for constructing the circuit, and the circuit comprises 4 signal input wires which are respectively a first scanning signal wire, a second scanning signal wire, a data signal wire and a control signal wire; and the threshold voltage V(th) and external input voltage V(dd) can be compensated at the process of driving an AMOLED. The AMOLED pixel driving circuit provided by the invention has the beneficial effects that the threshold voltage V(th) and the external input voltage V(dd) can be compensated simultaneously for an AMOLED driving circuit, and the AMOLED display effect can be improved effectively. The AMOLED pixel driving circuit provided by the invention is especially suitable for the AMOLED driving circuit.

Description

technical field [0001] The invention relates to electronic circuit technology, in particular to an AMOLED pixel drive circuit. Background technique [0002] AMOLED (active matrix organic light-emitting diode panel) is called the next generation display technology, the current AMOLED pixel drive circuit such as figure 1 Shown: including organic light emitting diode, capacitor C, first transistor TFT1, second transistor TFT2, third transistor TFT3, fourth transistor TFT4, fifth transistor TFT5 and sixth transistor PTFT; wherein, the gate of the first transistor TFT1 Connect the first scanning signal line, the source is connected to the data signal line, the drain is connected to one end of the capacitor C and the source of the second transistor TFT2, the gate of the second transistor TFT2 is connected to the second scanning signal line, and the gate of the third transistor TFT3 The pole is connected to the first scanning signal line, the source is connected to the drain of 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): G09G3/32G09G3/3266
Inventor 何小祥
Owner SICHUAN CCO DISPLAY TECH