Display device

Patent metadata

Field	Value
Publication number	US-9570035-B2
Application number	US-201414341682-A
Country	US
Kind code	B2
Filing date	Jul 25, 2014
Priority date	Feb 25, 2014
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A display device includes a display unit including pixels in an area defined by a plurality of scan lines and a plurality of data lines, a scan driving unit configured to apply a plurality of scan signals to the scan lines, a data driving unit configured to apply a plurality of data signals to the data lines, an inspection circuit unit configured to apply a plurality of inspection signals to the data lines, a plurality of inspection pads configured to transmit a plurality of inspection control signals to the inspection circuit unit, a plurality of first inspection lines electrically connecting the inspection circuit unit to the inspection pads, and a plurality of second inspection lines branching off from the first inspection lines and electrically connecting the inspection circuit unit to the data driving unit.

First claim

What is claimed is:

1. A display device comprising:
a display unit including pixels in an area defined by a plurality of scan lines and a plurality of data lines;
a scan driving unit configured to apply a plurality of scan signals to the scan lines;
a data driving unit configured to apply a plurality of data signals to the data lines;
an inspection circuit unit configured to apply a plurality of inspection signals to the data lines;
a plurality of inspection pads configured to transmit a plurality of inspection control signals to the inspection circuit unit;
a plurality of first inspection lines electrically connecting the inspection circuit unit to the inspection pads; and
a plurality of second inspection lines branching off from the first inspection lines and electrically connecting the inspection circuit unit to the data driving unit;
wherein the data driving unit applies an off bias voltage to the inspection circuit unit via the second inspection lines.

2. The display device of claim 1 , wherein the off bias voltage is one of a gate high-level voltage VGH and a gate low-level voltage VGL.

3. The display device of claim 1 , wherein the inspection signals comprise one of an emission inspection signal and an aging signal.

4. The display device of claim 1 , wherein the inspection circuit unit is physically separate from the data driving unit, and wherein the inspection circuit unit is coupled directly to the data lines.

5. The display device of claim 1 , wherein the display device further comprises:
a plurality of driving pads configured to transmit the data signals to the data driving unit; and
a flexible printed circuit board electrically connected to the driving pads.

6. The display device of claim 5 , wherein the flexible printed circuit board has a width smaller than the width of a display substrate.

7. The display device of claim 5 , wherein the flexible printed circuit board has substantially the same width as the plurality of driving pads disposed on the display substrate.

8. A display device comprising:
a display unit including pixels in an area defined by a plurality of scan lines and a plurality of data lines;
a scan driving unit configured to apply a plurality of scan signals to the scan lines;
a data driving unit configured to apply a plurality of data signals to the data lines;
an inspection circuit unit configured to apply a plurality of inspection signals to the data lines;
a plurality of inspection pads configured to transmit a plurality of inspection control signals to the inspection circuit unit;
a plurality of first inspection lines electrically connecting the inspection circuit unit to the inspection pads;
a plurality of second inspection lines branching off from the first inspection lines and electrically connecting the inspection circuit unit to the data driving unit;
a plurality of power pads configured to transmit a scan driving power to the scan driving unit;
a plurality of first power lines electrically connecting the scan driving unit to the power pads; and
a plurality of second power lines branching off from the first power lines and electrically connecting the scan driving unit to the data driving unit;
wherein the data driving unit is configured to apply the scan driving power to the scan driving unit via the second power lines.

9. The display device of claim 8 , wherein the scan driving power comprises one of the gate high-level voltage VGH, the gate low-level voltage VGL, and an initiation voltage VINT.

Assignees

• Samsung Display Co Ltd

Inventors

• Eom Ki-Myeong

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

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G5/00 Primary

  Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) · CPC title

• G09G3/2096

  Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167) · CPC title

• G09G2300/0408

  Integration of the drivers onto the display substrate · CPC title