Display device

Patent metadata

Field	Value
Publication number	US-2016140935-A1
Application number	US-201514711282-A
Country	US
Kind code	A1
Filing date	May 13, 2015
Priority date	Nov 13, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

A display device includes signal lines comprising gate lines and data lines, wherein a respective data line is disposed to intersect with the gate lines. The display device further includes a repair line and a switch configured to electrically connect the repair line to a signal line, wherein a defective signal line can be electrically connected to the repair line.

First claim

What is claimed is:

1 . A display device comprising:
signal lines, comprising:
gate lines; and
data lines, wherein a respective data line is disposed to intersect with the gate lines;
a repair line; and a switch configured to electrically connect the repair line to a signal line, wherein a defective signal line can be electrically connected to the repair line.

2 . The display device of claim 1 , further comprising a timing controller configured to output a switching control signal in response to a test signal received from outside the display device,
wherein the switch is turned on according to an activation state of the switching control signal.

3 . The display device of claim 2 , wherein the test signal comprises information to identify at least one of the defective signal line, the repair line, and the switch.

4 . The display device of claim 2 , wherein the timing controller is configured to perform a control operation to activate the switch to connect the defective signal line to the repair line.

5 . The display device of claim 1 , further comprising a plurality of repair lines, wherein the number of repair lines corresponds to a number of defective signal lines.

6 . The display device of claim 1 , further comprising a plurality of switches, wherein the number of switches corresponds to the number of data lines.

7 . The display device of claim 1 , wherein the switch is a portion of a data driver circuit.

8 . The display device of claim 7 , wherein the defective signal line is a data line, and
wherein the defective data line comprises a first line portion and a second line portion disconnected from each other.

9 . The display device of claim 8 , wherein the data driver circuit further comprises an output buffer unit outputting a plurality of data voltages for displaying an image.

10 . The display device of claim 9 , wherein the data driver circuit further comprises:
a driving line electrically connecting the first line portion to the output buffer unit; a first switch line connecting the driving line and the switch; and a second switch line electrically connecting the repair line and the switch, wherein the second line portion is connected to the repair line.

11 . The display device of claim 10 , wherein the driving line is electrically connected to the first line portion.

12 . The display device of claim 8 , wherein the second line portion is electrically connected to the repair line.

13 . The display device of claim 1 , wherein the display device includes a display area where the signal lines are disposed and a non-display area and wherein the repair line is disposed in the non-display area.

14 . The display device of claim 1 , further comprising the switch is a portion of a gate driver circuit,
wherein the defective line is a gate line and wherein the switch electrically connects the defective gate line to the repair line.

Assignees

• Samsung Display Co Ltd

Inventors

• Hwang Young-Soo
• Kim Chang Sin

Classifications

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2330/12

  Test circuits or failure detection circuits included in a display system, as permanent part thereof · CPC title

• G09G5/18 Primary

  Timing circuits for raster scan displays (specially adapted for television H04N {; synchronisation between the display unit and other display units, videodisc player G09G5/12}) · CPC title

• G09G2330/08

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