Display device

Patent metadata

Field	Value
Publication number	US-10997919-B2
Application number	US-201916573240-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Dec 21, 2018
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A display device includes a display area of various shapes, has a reduced dead space, and displays an image. Further, the display device includes a display unit including a rounded corner portion, a first driving voltage supply line arranged in a first direction in a non-display area on one side of the display unit, a plurality of first driving voltage lines which supplies a driving voltage to a plurality of pixels and is arranged in a second direction that intersects with the first direction and being connected to the first driving voltage supply line, and a plurality of second driving voltage lines disconnected from the first driving voltage supply line.

First claim

What is claimed is:

1. A display device comprising:
a display unit disposed over a substrate and including a first display area and a second display area, each of the first display area and second display area including a plurality of pixel arrays and the second display area further including a rounded corner portion;
a first driving voltage supply line extending in a first direction in a non-display area on one side of the display unit;
a plurality of first driving voltage lines which supplies a driving voltage to a plurality of pixels, the plurality of first driving voltage lines being arranged in the first display area in the first direction and extending in a second direction which intersects with the first direction, extending to an area between the first display area and the first driving voltage supply line, and being connected to the first driving voltage supply line; and
a plurality of second driving voltage lines which supplies a driving voltage to the plurality of pixels, the plurality of second driving voltage lines being arranged in the second display area in the first direction, and being disconnected from the first driving voltage supply line in an area between the second display area and the first driving voltage supply line,
wherein the plurality of second driving voltage lines are connected to each other with a plurality of connection lines.

2. The display device of claim 1 , wherein the plurality of first driving voltage lines and the plurality of second driving voltage lines are electrically connected to a plurality of connection lines extending in the first direction.

3. The display device of claim 2 , wherein the plurality of connection lines intersects with the plurality of first driving voltage lines and the plurality of second driving voltage lines to constitute a mesh shape.

4. The display device of claim 2 , wherein the plurality of second driving voltage lines supplies the driving voltage to the plurality of pixels disposed in the second display area through the plurality of connection lines.

5. A display device comprising:
a display unit disposed over a substrate and including a first display area and a second display area, each of the first display area and the second display area including a plurality of pixel arrays and the second display area further including a founded corner portion,
a first driving voltage supply line extending in a first direction in a non-display area on one side of the display unit;
a plurality of first driving voltage lines which supplies a driving voltage to a plurality of pixels, the plurality of first driving voltage lines being arranged in the first display area in the first direction and extending in a second direction which intersects with the first direction, extending to an area between the first display area and the first driving voltage supply line, and being connected to the first driving voltage supply line;
a plurality of second driving voltage lines which supplies a driving voltage to the plurality of pixels, the plurality of second driving voltage lines being arranged in the second display area in the first direction, and being disconnected from the first driving voltage supply line in an area between the second display area and the first driving voltage supply line;
a switching unit including a plurality of demultiplexers which is arranged in the non-display area, demuxes a data signal and supplies the demuxed data signal to a plurality of data lines; and
a second driving voltage supply line arranged in parallel to the first driving voltage supply line with the switching unit therebetween and connected to a terminal unit at an edge of the substrate,
wherein the display unit includes a plurality of scan lines and the plurality of data lines respectively connected to the plurality of pixels.

6. The display device of claim 5 , wherein the switching unit includes:
a first switching unit which demuxes a data signal supplied to the first display area; and
a second switching unit which demuxes a data signal supplied to the second display area,
wherein a plurality of first demultiplexers included in the first switching unit is arranged at a first pitch, and a plurality of second demultiplexers included in the second switching unit is arranged at a second pitch less than the first pitch.

7. The display device of claim 6 , wherein the first driving voltage supply line and the second driving voltage supply line are electrically connected to each other through plurality of connection lines arranged between the plurality of first demultiplexers.

8. The display device of claim 1 , wherein pixels of the plurality of pixels which are adjacent to an outer edge of the display unit are arranged stepwise.

9. The display device of claim 1 , wherein the display unit has one of a polygonal shape, a circular shape, and an elliptical shape.

10. The display device of claim 1 , further comprising a substrate over which the display unit is disposed, the substrate including curved edges.

11. The display device of claim 1 , wherein a length of the plurality of second driving voltage lines extending in the second direction is less than a length of the plurality of first driving voltage lines.

12. A display device comprising:
a display unit in which a first display area and a second display area including a corner portion at an edge of the first display area are defined, the display unit including a plurality of first pixels and a plurality of second pixels, the plurality of first pixels and the plurality of second pixels being respectively disposed in the first display area and the second display area, and being connected to a plurality of data lines and a plurality of driving voltage lines extending in a second direction and a plurality of scan lines extending in a first direction which intersects with the second direction;
a scan driver and a data driver arranged in a non-display area, the non-display area being outside of the display unit;
a switching unit including a plurality of demultiplexers which is arranged in the non-display area, demuxes a data signal output from the data driver and supplies the demuxed data signal to the plurality of data lines; and
a driving voltage supply line arranged in the non-display area and connected to the plurality of driving voltage lines extending from the display unit,
wherein the plurality of driving voltage lines include a first driving voltage line connected to the plurality of first pixels and a second driving voltage line connected to the plurality of second pixels, the first driving voltage line extends to the non-display area and is connected to the driving voltage supply line, and the second driving voltage line is disconnected from the driving voltage supply line in the non-display area,
wherein the plurality of second driving voltage lines are connected to each other with a plurality of connection lines.

13. The display device of claim 12 , wherein the corner portion has a rounded shape.

14. The display device of claim 12 , wherein pixels of the plurality of pixels which are adjacent to an outer edge of the display unit are arranged stepwise.

15. The display device of claim 12 , wherein the switching unit further includes:
a first switching unit which demuxes a data signal supplied to the plurality of first pixels; and
a second switching unit which demuxes a data signal supplied to the plurality of second pixels,
wherein a plurality of demultiplexers included in the first switching unit is arranged at a first pitch, and a plurality of demultiplexers included in the second switching unit is arranged at a se

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yanghee
• Kwak Wonkyu
• Kim Byungsun
• Lee Bongwon
• Lee Sujin

Classifications

• H10K59/131 Primary

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

• G09G2310/0297

  Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns · CPC title

• G09G2330/02

  Details of power systems and of start or stop of display operation · CPC title

• G09G3/3291

  in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title