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

Pixel driving circuit and active matrix type organic light emitting display (OLED) using same

A technology of pixel driving circuit and light-emitting display, applied in static indicators, instruments, etc., can solve the problem of uneven brightness of display, and achieve the effect of improving uneven brightness

Inactive Publication Date: 2013-07-24
KUSN INFOVISION OPTOELECTRONICS
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a pixel drive circuit and an active matrix organic light-emitting display using it, which can improve the problem of uneven brightness 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 driving circuit and active matrix type organic light emitting display (OLED) using same
  • Pixel driving circuit and active matrix type organic light emitting display (OLED) using same
  • Pixel driving circuit and active matrix type organic light emitting display (OLED) using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] figure 2 It is a schematic structural diagram of a pixel driving circuit according to an embodiment of the present invention. Such as figure 2 As shown, the pixel driving circuit 20 is used to drive an organic light emitting diode (organic light emitting diode, OLED) in a corresponding pixel unit in an active matrix organic light emitting display. The pixel unit is electrically connected to a corresponding scanning line (not shown in the figure) and a corresponding data line (not shown in the figure). The OLED includes an anode and a cathode, and the cathode of the OLED is connected to the first reference voltage source VSS. The pixel driving circuit 20 includes: a first transistor M1, a second transistor M2, a third transis...

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 driving circuit which is used for driving an organic light emitting diode (OLED), wherein the OLED comprises an anode and a cathode; the cathode of the OLED is connected with a first reference voltage source; the pixel driving circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor and a capacitor; the first transistor is connected between a data signal wire and a first end of the capacitor; the second transistor is connected between the first end of the capacitor and a second reference voltage source; the third transistor is connected between a second end of the capacitor and the anode of the OLED; the fourth transistor is connected between a first direct-current voltage source and the anode of the OLED; a control end of the fourth transistor is connected with the second end of the capacitor; the second transistor and the third transistor are simultaneously conducted; and the first transistor and the second transistor are conducted at different time intervals.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel driving circuit and an active matrix organic light emitting display using the same. Background technique [0002] Compared with the current mainstream liquid crystal display, organic light-emitting displays that use organic light-emitting diodes (Organic Light Emitting Diode, OLED) to display images have the characteristics of faster response, higher contrast, and wider viewing angles, and gradually become the next-generation display technology. . [0003] Organic light-emitting displays can be classified into two types according to pixel driving methods: Active Matrix Organic Light Emitting Diode (AMOLED) and Passive Matrix Organic Light Emitting Diode (PMOLED). Compared with the passive matrix driver, the active matrix driver has the advantages of low power consumption, long life, and large-size display. [0004] figure 1 It is a schematic diagram of a pixel driving...

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
IPC IPC(8): G09G3/32G09G3/325
Inventor 鲁佳浩
Owner KUSN INFOVISION OPTOELECTRONICS