Organic light-emitting display

Patent metadata

Field	Value
Publication number	US-9460650-B2
Application number	US-201414207829-A
Country	US
Kind code	B2
Filing date	Mar 13, 2014
Priority date	Apr 24, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

An organic light-emitting display includes first sub-pixels of a first color and second sub-pixels of a second color. Pairs of the first sub-pixels are consecutively arranged in different rows, and pairs of the second sub-pixels are consecutively arranged in different rows. The pairs of first sub-pixels and the pairs of second sub-pixels arranged alternately in a first column, and third sub-pixels are in a second column adjacent to the first column. When one sub-pixel is defective, a control circuit provides current another sub-pixel of the same color.

First claim

What is claimed is:

1. An organic light-emitting display, comprising:
a pair of first sub-pixels of a first color arranged adjacent to one another in different rows and corresponding to different unit pixels;
a pair of second sub-pixels of a second color adjacent to one another in different rows and corresponding to different unit pixels, the pair of first sub-pixels and the pair of second sub-pixels arranged alternately in a first column; and
third sub-pixels of a third color in a second column adjacent to the first column, wherein each third sub-pixel includes a light-emitting diode and a pixel circuit connected to the light-emitting diode, and each of the first sub-pixel and the second sub-pixel including:
a plurality of light-emitting diodes, each of which includes an anode electrode and a cathode electrode;
a pixel circuit to be selectively connected to at least one of the plurality of light-emitting diodes; and
a switch circuit between the pixel circuit and the plurality of light-emitting diodes,
wherein the switch circuit of the first sub-pixel in the first row is to selectively connect the pixel circuit of the first sub-pixel in the first row to at least one of the light-emitting diodes of the first sub-pixel in the first row and at least one of a plurality of light-emitting diodes of the first sub-pixel in the second row adjacent to the first row according to a state of the plurality of light-emitting diodes of the first sub-pixel in the first row, and
wherein the switch circuit of the second sub-pixel in the first row is to selectively connect the pixel circuit of the second sub-pixel in the first row to at least one of the light-emitting diodes of the second sub-pixel in the first row and at least one of a plurality of light-emitting diodes of the second sub-pixel in the second row according to a state of the plurality of light-emitting diodes of the second sub-pixel in the first row.

2. The display as claimed in claim 1 , wherein the switch circuit of the first sub-pixel of the first unit pixel in the first row comprises:
a first switch circuit between the pixel circuit of the first sub-pixel in the first row to the light-emitting diodes of the first sub-pixel in the first row; and
a second switch circuit between the pixel circuit of the first sub-pixel in the first row to the light-emitting diodes of the first sub-pixel of the second unit pixel in the second row, and
wherein the switch circuit of the second sub-pixel of the first unit pixel in the first row comprises:
a first switch circuit between the pixel circuit of the second sub-pixel in the first row to the light-emitting diodes of the second sub-pixel in the first row; and
a second switch circuit between the pixel circuit of the second sub-pixel in the first row to the light-emitting diodes of the second sub-pixel of the second unit pixel in the second row.

3. The display as claimed in claim 2 , wherein:
the first switch circuit of the first sub-pixel in the first row includes multiple switches to selectively connect the pixel circuit of the first sub-pixel in the first row to at least one of the anode electrodes of the light-emitting diodes of the first sub-pixel in the first row, and
the second switch circuit of the first sub-pixel in the first row includes multiple switches to selectively connect the pixel circuit of the first sub-pixel in the first row to at last one of the anode electrodes of the light-emitting diodes of the first sub-pixel in the second row, and
wherein the first switch circuit of the second sub-pixel in the first row includes multiple switches to selectively connect the pixel circuit of the second sub-pixel in the first row to at least one of the anode electrodes of the light-emitting diodes of the second sub-pixel in the first row, and
the second switch circuit of the second sub-pixel in the first row includes multiple switches to selectively connect the pixel circuit of the second sub-pixel in the first row to at least one of the anode electrodes of the light-emitting diodes of the second sub-pixel in the second row.

4. The display as claimed in claim 3 , wherein the multiple switches are PMOS transistors.

5. The display as claimed in claim 3 , wherein the multiple switches are NMOS transistors.

6. The display as claimed in claim 2 , wherein:
the light-emitting diodes include a first light-emitting diode which includes a first anode electrode and a common cathode electrode, and a second light-emitting diode which includes a second anode electrode and the common cathode electrode.

7. The display as claimed in claim 6 , wherein:
when the first light-emitting diode of the first sub-pixel in the first row is defective, and
the first switch circuit of the first sub-pixel in the first row connects the pixel circuit of the first sub-pixel in the first row to the second light-emitting diode of the first sub-pixel in the first row and the second switch circuit connects the pixel circuit of the first sub-pixel in the first row to one of a first light-emitting diode or a second light-emitting diode of the first sub-pixel in the second row.

8. The display as claimed in claim 6 , wherein:
when both the first light-emitting diode and the second light-emitting diode of the first sub-pixel in the first row are defective, and
the second switch circuit of the first sub-pixel in the first row connects the pixel circuit of the first sub-pixel in the first row to a first light-emitting diode and a second light-emitting diode of the first sub-pixel in the second row.

9. The display as claimed in claim 7 , wherein the second light-emitting diode of the first sub-pixel in the first row and the one of the first light-emitting diode or the second light-emitting diode of the first sub-pixel in the second row connected to the second switch circuit are controlled to emit light at a same time.

10. The display as claimed in claim 1 , wherein the third sub-pixel has a height that is substantially twice or more than a height of the first sub-pixel or the second sub-pixel in a column direction.

11. The display as claimed in claim 1 , wherein:
the first sub-pixels emit red light,
the second sub-pixels emit green light, and
the third sub-pixels emit blue light.

12. An organic light-emitting display, comprising:
a sub-pixel in a first row which includes:
a plurality of first light-emitting diodes;
a first pixel circuit to output a driving current;
a first switch circuit between the first pixel circuit and the plurality of first light-emitting diodes, the first switch circuit to selectively connect the first pixel circuit to at least one of the plurality of first light-emitting diodes to transmit a driving current from the first pixel circuit to at least one of the plurality of first light-emitting diodes; and
a second switch circuit between the first pixel circuit and a plurality of second light-emitting diodes of a sub-pixel of a same color in a second row adjacent to the first row, the second switch circuit to selectively connect the first pixel circuit to at least one of the plurality of second light-emitting diodes to transmit the driving current from the first pixel circuit to at least one of the plurality of second light-emitting diodes.

13. The display as claimed in claim 12 , further comprising:
a plurality of pixels, each pixel including a first sub-pixel of a first color, a second sub-pixel of a second color and a third sub-pixel of a third color, wherein:
a pair of the first sub-pixels are arranged consecutively in different rows, and
a pair of the second sub-pixels are arranged consecutively in different rows,
the pair of first sub-pixels and t

Assignees

• Samsung Display Co Ltd

Inventors

• Hong Sang-Min

Classifications

• G09G2330/08

  Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared · CPC title

• G09G2300/0443

  with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) · CPC title

• G09G2330/10

  Dealing with defective pixels · CPC title

• G09G3/32 Primary

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• H01L27/3218

  Electricity · mapped topic