Organic light emitting display having a reduced number of signal lines

Patent metadata

Field	Value
Publication number	US-9384692-B2
Application number	US-201113097023-A
Country	US
Kind code	B2
Filing date	Apr 28, 2011
Priority date	Oct 28, 2010
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

An organic light emitting display includes common coupling units at crossing regions of scan lines and data lines; first pixels at the crossing regions and positioned on an ith horizontal line to be coupled to the common coupling units positioned at the same crossing regions, wherein i is a positive integer; second pixels at the crossing regions and positioned on an (i+1)th horizontal line to be coupled to the common coupling units positioned at the same crossing regions; first control lines coupled to the first pixels; and second control lines coupled to the second pixels.

First claim

What is claimed is:

1. An organic light emitting display comprising:
first pixels on an ith horizontal line, wherein i is a positive integer;
second pixels on an (i+1)th horizontal line;
scan lines and emission control lines;
data lines crossing the scan lines and the emission control lines and coupled to the first pixels and the second pixels;
first control lines coupled to the first pixels; and
second control lines coupled to the second pixels,
wherein the scan lines comprise a first scan line coupled to the first pixels on the ith horizontal line and the second pixels positioned on the (i+1)th horizontal line, the first scan line for scanning the first pixels and the second pixels,
wherein the emission control lines comprise a first emission control line coupled to the first pixels on the ith horizontal line and the second pixels on the (i+1)th horizontal line, and
data signals are supplied to the first pixels and the second pixels when a scan signal is supplied to the first scan line.

2. The organic light emitting display as claimed in claim 1 , further comprising:
a scan driver for sequentially supplying scan signals to the scan lines and for sequentially supplying emission control signals to the emission control lines;
a data driver for supplying the data signals to the data lines; and
a control line driver for supplying a first control signal to the first control lines and for supplying a second control signal to the second control lines.

3. The organic light emitting display as claimed in claim 2 , wherein the scan driver is configured to supply each of the scan signals to have a duration of two horizontal periods.

4. The organic light emitting display as claimed in claim 3 , wherein the scan driver is configured to supply one of the emission control signals to a jth emission control line from among the emission control lines to overlap the scan signals supplied to a (j−1)th scan line and a jth scan line from among the scan lines, wherein j is a positive integer, wherein the first scan line is the jth scan line, and the first emission control line is the jth emission control line.

5. The organic light emitting display as claimed in claim 2 , wherein the control line driver is configured to sequentially supply the first control signal and the second control signal while the scan signals are being supplied.

6. The organic light emitting display as claimed in claim 5 , wherein the data driver is configured to supply a first data signal of the data signals, to be supplied to a corresponding one of the first pixels, to a corresponding one of the data lines while the first control signal is being supplied, and to supply a second data signal of the data signals, to be supplied to a corresponding one of the second pixels, to a corresponding one of the data lines while the second control signal is being supplied.

7. The organic light emitting display as claimed in claim 2 , wherein each of the first pixels and the second pixels comprises:
an OLED;
a second transistor for controlling an amount of current supplied from a first power source coupled to a first electrode of the second transistor to the OLED;
a first transistor coupled between the first electrode of the second transistor and a corresponding one of the data lines and configured to turn on when one of the scan signals is supplied to a jth scan line from among the scan lines, wherein j is a positive integer;
a storage capacitor coupled between a gate electrode of the second transistor and the first power source;
a fourth transistor serially coupled between the gate electrode of the second transistor and an initial power source and configured to turn on when one of the scan signals is supplied to a (j−1)th scan line from among the scan lines;
a fifth transistor coupled between the second transistor and the first power source and configured to turn off when one of the emission control signals is supplied to a jth emission control line from among the emission control lines; and
a sixth transistor coupled between the second transistor and the OLED and configured to turn off when the one of the emission control signals is supplied to the jth emission control line, wherein the first scan line is the jth scan line, and the first emission control line is the jth emission control line.

8. The organic light emitting display as claimed in claim 7 , wherein each of the first pixels further comprises:
a first third transistor coupled between the gate electrode of the second transistor and a second electrode of the second transistor and configured to turn on when the one of the scan signals is supplied to the jth scan line; and
a second third transistor coupled between the first third transistor and the second electrode of the second transistor and configured to turn on when the first control signal is supplied to a corresponding one of the first control lines.

9. The organic light emitting display as claimed in claim 7 , wherein each of the second pixels further comprises:
a first third transistor coupled between the gate electrode of the second transistor and a second electrode of the second transistor and configured to turn on when the one of the scan signals is supplied to the jth scan line; and
a second third transistor coupled between the first third transistor and the second electrode of the second transistor and configured to turn on when the second control signal is supplied to a corresponding one of the second control lines.

Assignees

• Choi Sang-Moo
• Samsung Display Co Ltd

Inventors

• Choi Sang-Moo

Classifications

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2320/0252

  Improving the response speed · CPC title

• G09G2300/0804

  Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title