Organic light emitting display

Patent metadata

Field	Value
Publication number	US-9576522-B2
Application number	US-201313941966-A
Country	US
Kind code	B2
Filing date	Jul 15, 2013
Priority date	Dec 27, 2012
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

An organic light emitting display includes a plurality of pixels formed at crossings of data lines and gate line parts and a main power supply line part supplying a cell driving voltage to the pixels. The main power supply line part includes a plurality of main power supply lines disposed along a first direction and main power supply line connection patterns for connecting the adjacent main power supply lines along a second direction substantially perpendicular to the first direction. The main power supply line connection patterns are staggered along the second direction.

First claim

What is claimed is:

1. An active matrix organic light emitting display comprising:
a plurality of pixels formed at crossings of data lines and gate line parts, each pixel including an organic light emitting diode (OLED), a driving thin film transistor (TFT), a switching TFT, and a capacitor; and
a main power supply line part configured to supply a cell driving voltage to the pixels and including a plurality of main power supply lines extended along a first direction and a plurality of main power supply line connection patterns for connecting adjacent main power supply lines along a second direction substantially perpendicular to the first direction,
wherein the main power supply line connection patterns are staggered on a regular, repeated basis of an integer multiple of a pitch of the plurality of pixels along the second direction.

2. The organic light emitting display of claim 1 , wherein the main power supply line part includes an ELVDD supply line part configured to supply a high potential cell driving voltage ELVDD to the pixels and an ELVSS supply line part configured to supply a low potential cell driving voltage ELVSS to the pixels,
wherein the main power supply line connection patterns include ELVDD supply line connection patterns for connecting adjacent ELVDD supply lines extending in the first direction along the second direction and ELVSS supply line connection patterns for connecting adjacent ELVSS supply lines extending in the first direction along the second direction.

3. The organic light emitting display of claim 2 , wherein a number of ELVDD supply line connection patterns disposed between first and second ELVDD supply lines, which are positioned adjacent to each other in the second direction, is less than a vertical resolution of a display panel.

4. The organic light emitting display of claim 3 , wherein when the vertical resolution of the display panel is ‘1080’, the number of ELVDD supply line connection patterns disposed between the first and second ELVDD supply lines is about 5 to about 20.

5. The organic light emitting display of claim 3 , wherein the ELVDD supply line connection patterns are disposed between the first and second ELVDD supply lines at regular intervals along the first direction.

6. The organic light emitting display of claim 3 , wherein the ELVDD supply line connection patterns are disposed between the first and second ELVDD supply lines at irregular intervals along the first direction.

7. The organic light emitting display of claim 2 , wherein a hold percentage of the high potential cell driving voltage ELVDD in the pixels responding to a voltage drop of 1V is at least about 70%.

8. The organic light emitting display of claim 1 , further comprising:
a Vint supply line part configured to supply an initialization voltage Vint to the pixels, the Vint supply line part including a plurality of Vint supply lines extended along the first direction and Vint supply line connection patterns for connecting adjacent Vint supply lines along the second direction; and
a Vref supply line part configured to supply a reference voltage Vref to the pixels, the Vref supply line part including a plurality of Vref supply lines extended along the first direction and Vref supply line connection patterns for connecting adjacent Vref supply lines along the second direction,
wherein the Vint supply line connection patterns are staggered along the second direction, and the Vref supply line connection patterns are staggered along the second direction.

9. The organic light emitting display of claim 8 , wherein a number of Vint supply line connection patterns disposed between first and second Vint supply lines, which are positioned adjacent to each other in the second direction, is less than a vertical resolution of a display panel,
wherein a number of Vref supply line connection patterns disposed between first and second Vref supply lines, which are positioned adjacent to each other in the second direction, is less than the vertical resolution of the display panel.

10. The organic light emitting display of claim 9 , wherein when the vertical resolution of the display panel is ‘1080’, the number of Vint supply line connection patterns disposed between the first and second Vint supply lines is about 5 to about 20, and the number of Vref supply line connection patterns disposed between the first and second Vref supply lines is about 5 to about 20.

11. The organic light emitting display of claim 9 , wherein the Vint supply line connection patterns are disposed between the first and second Vint supply lines at regular intervals along the first direction,
wherein the Vref supply line connection patterns are disposed between the first and second Vref supply lines at regular intervals along the first direction.

12. The organic light emitting display of claim 9 , wherein the Vint supply line connection patterns are disposed between the first and second Vint supply lines at irregular intervals along the first direction,
wherein the Vref supply line connection patterns are disposed between the first and second Vref supply lines at irregular intervals along the first direction.

13. The organic light emitting display of claim 1 , wherein the first direction indicates a Y-axis direction in which the data lines extend, and the second direction indicates an X-axis direction in which the gate line parts extend.

14. The organic light emitting display of claim 1 , wherein the first direction indicates an X-axis direction in which the gate line parts extend, and the second direction indicates a Y-axis direction in which the data lines extend.

15. The organic light emitting display of claim 1 , wherein the main power supply line part forms a semi-mesh structure.

16. The organic light emitting display of claim 1 , wherein the main power supply line connection patterns are spaced apart from each other at regular intervals in the first and second directions.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jihun
• Park Hyojin

Classifications

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2320/0209

  Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display · CPC title

• G09G2320/0223

  Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title