Display device with reduced parasitic capacitance

Patent metadata

Field	Value
Publication number	US-12538629-B2
Application number	US-202217881184-A
Country	US
Kind code	B2
Filing date	Aug 4, 2022
Priority date	Aug 5, 2021
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A display device includes pixels including a first pixel and a second pixel sequentially disposed in a first direction, each including sub-pixels including a first electrode, a second electrode, and a light emitting element, a driving circuit including driving elements between the pixels, pixel lines connected to the pixels, and driving lines connected to the driving elements. The driving lines are in an area between the first pixel and the second pixel, and include a first driving line extending in a second direction intersecting the first direction in the area between the first pixel and the second pixel. First electrodes included in the sub-pixels of the first pixel and first electrodes included in the sub-pixels of the second pixel are spaced apart by a distance equal to or greater than a width of the first driving line in the first direction, and do not overlap the first driving line.

First claim

What is claimed is:

1 . A display device comprising:
pixels including: a first pixel; and a second pixel sequentially disposed in a first direction, each of the first pixel and the second pixel including sub-pixels, each of the sub-pixels including:
a first electrode;
a second electrode; and
a light emitting element;
a driving circuit including driving elements disposed between the pixels; pixel lines electrically connected to the pixels; and driving lines electrically connected to the driving elements, wherein the driving lines are disposed in an area between the first pixel and the second pixel, the driving lines including a first driving line extending in a second direction intersecting the first direction in the area between the first pixel and the second pixel, the first electrode included in each of the sub-pixels of the first pixel is spaced apart from the first electrode included in each of the sub-pixels of the second pixel by a distance equal to or greater than a width of the first driving line in the first direction, and the first electrode included in each of the sub-pixels of the first pixel and the first electrode included in each of the sub-pixels of the second pixel do not overlap the first driving line in a plan view.

2 . The display device according to claim 1 , wherein the first electrodes of the sub-pixels are electrically connected to pixel circuits of the sub-pixels, respectively.

3 . The display device according to claim 1 , wherein the first electrodes of the sub-pixels extend in the first direction in pixel areas.

4 . The display device according to claim 3 , wherein
second electrodes of the sub-pixels extend in the first direction and face the first electrodes of the sub-pixels, respectively, and the second electrodes of the sub-pixels are commonly electrically connected to a pixel power line.

5 . The display device according to claim 4 , wherein the second electrodes of adjacent ones of the sub-pixels in the first direction are an integrated electrode.

6 . The display device according to claim 1 , wherein the driving lines include a second driving line disposed around the first driving line, passing through the area between the first pixel and the second pixel, and extending in the second direction in the area between the first pixel and the second pixel.

7 . The display device according to claim 6 , wherein
the first electrodes of the sub-pixels sequentially disposed in the first direction are spaced apart from each other with the first driving line and the second driving line disposed between the first electrodes of the sub-pixels in the first direction, and the first electrodes of the sub-pixels sequentially disposed in the first direction do not overlap the first driving line and the second driving line in a plan view.

8 . The display device according to claim 6 , wherein each of the first driving line and the second driving line is in a mesh line including a first sub-line extending in the first direction and a second sub-line extending in the second direction.

9 . The display device according to claim 6 , wherein the driving circuit includes a first driving element and a second driving element disposed around the first pixel and the second pixel.

10 . The display device according to claim 9 , wherein
the first driving line is electrically connected to the first driving element, and the second driving line is electrically connected to the second driving element.

11 . The display device according to claim 1 , wherein
the pixel lines include scan lines and data lines of the pixels, and the driving circuit includes a scan driver including stage circuits electrically connected to the scan lines.

12 . The display device according to claim 11 , wherein the driving elements include transistors and capacitors forming the stage circuits, and are distributed in an area between the pixels.

13 . The display device according to claim 11 , wherein the driving lines include input signal lines and power lines of the scan driver.

14 . The display device according to claim 13 , wherein each of the driving lines is disposed in at least one of an area between at least two adjacent ones of the pixels in the first direction or an area between at least two adjacent ones of the pixels in the second direction.

15 . The display device according to claim 1 , further comprising:
a connection line electrically connected between at least two driving elements among the driving elements.

16 . The display device according to claim 15 , wherein
the connection line passes through an area between at least two adjacent ones of the pixels in the first direction, and the connection line extends in the second direction.

17 . The display device according to claim 16 , wherein the first electrodes of the pixels disposed around the connection line do not overlap the connection line in a plan view.

18 . The display device according to claim 1 , wherein each of the driving elements is disposed between at least two adjacent ones of the pixels in the second direction.

19 . The display device according to claim 1 , wherein
the first electrode and the second electrode of each of the sub-pixels extend in the first direction and are spaced apart from each other in the second direction, and the light emitting element of each of the sub-pixels includes:
a first end electrically connected to the first electrode; and
a second end electrically connected to the second electrode.

20 . A display device comprising:
pixels each including: a sub-pixel including:
a first electrode;
a second electrode; and
a light emitting element disposed between the first electrode and the second electrode;
scan lines electrically connected to the pixels; a scan driver including driving elements disposed between the pixels, the scan driver outputting scan signals to the scan lines; and driving lines electrically connected to the driving elements, wherein the driving lines include a first driving line passing through an area between two adjacent ones of the pixels in a first direction and extending in a second direction intersecting the first direction, and first electrodes of the two adjacent ones of the pixels in the first direction are spaced apart from each other by a distance equal to or greater than a width of the first driving line in the first direction and do not overlap the first driving line in a plan view.

Assignees

• Samsung Display Co Ltd

Inventors

• Cha Na Hyeon
• Son Sun Kwun
• Shin Dong Hee

Classifications

• G09G2310/0267

  Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays · CPC title

• 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

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• H10H20/821

  of the light-emitting regions, e.g. non-planar junctions · CPC title