IP Library Granted Patent US 12,645,330
Granted Patent B2
US 12,645,330 · App. 18/761,512 · Granted Jun 2, 2026

Display device

Inventors: Bo Geun Yuk (Yongin-si, KR); Min Hong Kim (Yongin-si, KR); Mi Ae Park (Yongin-si, KR); Ga Yeon Yun (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
G06F3/0443G06F2203/04101
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Quick Facts
Patent No.
US 12,645,330
App. No.
18/761,512
Granted
Jun 2, 2026
Kind
B2
Abstract

A display device including: a display panel including a display area; and a touch array disposed on the display panel, wherein the display panel includes: a substrate; transistors disposed on the substrate; an insulating layer covering first electrodes and second electrodes of the transistors; light emitting elements disposed on the insulating layer, the light emitting elements being electrically connected to the first electrodes of the transistors; and a thin film encapsulation layer covering the light emitting elements, wherein the display area is divided into a plurality of sub-areas, and wherein the insulating layer has different thicknesses in the plurality of sub-areas.

Claims (54)

1 . A display device comprising:

a display panel including a display area; and

a touch array disposed on the display panel,

wherein the display panel includes:

a substrate;

transistors disposed on the substrate;

an insulating layer covering first electrodes and second electrodes of the transistors;

light emitting elements disposed on the insulating layer, the light emitting elements being electrically connected to the first electrodes of the transistors; and

a thin film encapsulation layer covering the light emitting elements,

wherein the display area is divided into a plurality of sub-areas, and

wherein the insulating layer has different thicknesses in the plurality of sub-areas.

2 . The display device of claim 1 , wherein the thicknesses of the insulating layer in the plurality of sub-areas are determined based on noise levels in signals of the touch array, wherein the noise levels are caused by electrical signals in the plurality of sub-areas when the display device is driven.

3 . The display device of claim 1 , wherein the thicknesses of the insulating layer in the plurality of sub-areas are set so that noise levels, which are respectively caused by electrical signals in the plurality of sub-areas, become uniform.

4 . The display device of claim 1 , wherein the display area has long sides which are disposed in parallel to each other and are spaced apart from each other in a first direction and short sides which are disposed in parallel to each other and are spaced apart from each other in a second direction intersecting the first direction,

wherein the plurality of sub-areas include a first sub-area, a second sub-area, and a third sub-area, which are sequentially arranged in the first direction, and

wherein the thickness of the insulating layer in the second sub-area is thicker than each of the thicknesses of the insulating layer in the first sub-area and the third sub-area.

5 . The display device of claim 1 , wherein the display area has long sides which are disposed in parallel to each other and are spaced apart from each other in a first direction and short sides which are disposed in parallel to each other and are spaced apart from each other in a second direction intersecting the first direction,

wherein the plurality of sub-areas include a first sub-area and a second sub-area, which are sequentially arranged in the second direction, and

wherein the thickness of the insulating layer in the first sub-area is thicker than the thickness of the insulating layer in the second sub-area.

6 . The display device of claim 1 , wherein each of the light emitting elements includes:

a pixel electrode disposed on the insulating layer, the pixel electrode being electrically connected to one of the first electrodes of the transistors;

a light emitting layer disposed on the pixel electrode; and

a common electrode disposed on the light emitting layer.

7 . The display device of claim 1 , wherein the insulating layer includes an organic material.

8 . The display device of claim 1 , wherein the insulating layer has a thickness in a range of 1 μm to 3 μm.

9 . A display device comprising: a display panel including a display area; and a touch array disposed on the display panel, wherein the display panel includes: a pixel circuit layer including a plurality of transistors; light emitting elements disposed on the pixel circuit layer, the light emitting elements being respectively connected to the plurality of transistors; and an insulating layer disposed between the pixel circuit layer and the light emitting elements, wherein the display area includes a plurality of sub-areas, and wherein the insulating layer has different thicknesses in the plurality of sub-areas.

10 . The display device of claim 9 , wherein the thicknesses of the insulating layer in the plurality of sub-areas are determined based on noise levels in signals of the touch array, wherein the noise levels are caused by electrical signals in the plurality of sub-areas when the display device is driven.

11 . The display device of claim 9 , wherein the thicknesses of the insulating layer in the plurality of sub-areas are set so that noise levels, which are respectively caused by electrical signals in the plurality of sub-areas, become uniform.

12 . The display device of claim 9 , wherein the display area has first sides which are disposed in parallel to each other and are spaced apart from each other in a first direction and second sides which are disposed in parallel to each other and are spaced apart from each other in a second direction intersecting the first direction,

wherein the plurality of sub-areas include a first sub-area, a second sub-area, and a third sub-area, which are sequentially arranged in the first direction, and

wherein the thickness of the insulating layer in the second sub-area is thicker than each of the thicknesses of the insulating layer in the first sub-area and the third sub-area.

13 . The display device of claim 9 , wherein the display area has first sides which are disposed in parallel to each other and are spaced apart from each other in a first direction and second sides which are disposed in parallel to each other and are spaced apart from each other in a second direction intersecting the first direction,

wherein the plurality of sub-areas include a first sub-area and a second sub-area, which are sequentially arranged in the second direction, and

wherein the thickness of the insulating layer in the first sub-area is thicker than the thickness of the insulating layer in the second sub-area.

14 . The display device of claim 9 , wherein the display panel further includes a thin film encapsulation layer covering the light emitting elements.

15 . The display device of claim 9 , wherein each of the light emitting elements includes:

a pixel electrode disposed on the insulating layer, the pixel electrode being electrically connected to one first electrode of one of the transistors;

a light emitting layer disposed on the pixel electrode; and

a common electrode disposed on the light emitting layer.

16 . A display device comprising:

a display panel including a display area; and

a touch array disposed on the display panel,

wherein the display panel includes:

a substrate;

transistors disposed on the substrate;

an insulating layer covering the transistors;

light emitting elements disposed on the insulating layer, the light emitting elements being electrically connected to the transistors; and

a thin film encapsulation layer covering the light emitting elements,

wherein the display area includes a first sub-area and a second sub-area, and

wherein the insulating layer has a different thicknesses in the first sub-area and the second sub-area.

17 . The display device of claim 16 , wherein the display area further includes a third sub-area.

18 . The display device of claim 17 , wherein the first, second and third sub-areas are arranged in sequence and the thickness of the second sub-area is greater than the thickness of the first sub-area and a thickness of the third sub-area.

19 . The display device of claim 17 , wherein the first, second and third sub-areas are arranged in sequence and the thickness of each of the first and second sub-areas is greater than a thickness of the third sub-area.

20 . The display device of claim 19 , wherein the first and second sub-areas have the same thickness.

Assignments (3)
CONFIDENTIALITY AND NON-DISCLOSURE AGREEMENT Recorded Sep 6, 2024
From: PARK, MI AE
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 068857/0669 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 15, 2024
From: YUK, BO GEUN; KIM, MIN HONG; YUN, GA YEON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 068421/0185 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2024
From: YUK, BO GEUN; KIM, MIN HONG; YUN, GA YEON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 068105/0290 →
Priority Claims (1)
KR 10-2023-0091911 · Jul 14, 2023 · national
Continuity (1)
Related Publication 20250021197A1 · Jan 16, 2025
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