IP Library Granted Patent US 11,158,686
Granted Patent B2
US 11,158,686 · App. 16/373,666 · Granted Oct 26, 2021

Display device

Inventors: Hyeonbum Lee (Hwaseong-si, KR); Hyoeng-Ki Kim (Suwon-si, KR); Kwangwoo Park (Hwaseong-si, KR); Jin-whan Jung (Yongin-Si, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/323G06F3/044G06F3/0412H01L27/3246H01L51/5281H01L51/5284
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Quick Facts
Patent No.
US 11,158,686
App. No.
16/373,666
Granted
Oct 26, 2021
Kind
B2
Abstract

A display panel including a pixel defining layer including a first portion, in which an opening to expose the first electrode is defined, and a second portion, which is disposed on the first portion and overlaps the first portion. A plurality of thin-films are disposed on the second electrode. An insulation pattern is disposed on the plurality of thin-films, overlaps the pixel defining layer, and overlaps the second portion. A distance between the first portion, which overlaps the insulation pattern, of the sensing electrode and the base insulation layer is greater than that between the second portion, which non-overlaps the insulation pattern, of the sensing electrode and the base insulation layer.

Claims (25)

1. A display device comprising:

a display panel; and

an input sensing unit comprising a sensing electrode and disposed directly on the display panel,

wherein:

the display panel comprises:

a light emitting element comprising a first electrode disposed on a base insulation layer, a second electrode, and a light emitting layer disposed between the first electrode and the second electrode;

a pixel defining layer disposed between the second electrode and the base insulation layer, and comprising a first portion having a flat upper surface extending in a direction substantially parallel to the base insulation layer, in which an opening to expose the first electrode is defined, and a second portion, which is disposed adjacent to the first portion and has a thickness greater than that of the first portion; and

a plurality of insulation layers disposed on the second electrode; and

one of the plurality of insulation layers comprises a first area, which overlaps the first portion of the pixel defining layer, and a second area, which overlaps the second portion of the pixel defining layer and has a thickness greater than that of the first area.

2. The display device of claim 1 , wherein a difference in thickness between the second area and the first area is substantially the same as a thickness between the second portion and the first portion.

3. The display device of claim 1 , wherein the second portion overlaps about 90% or more of the second area on a plane.

4. The display device of claim 1 , wherein the sensing electrode contacts the one of the plurality of insulation layers.

5. The display device of claim 1 , wherein the one of the plurality of insulation layers is formed with an opening corresponding to the opening of the first portion.

6. The display device of claim 5 , wherein the one of the insulation layers comprises a light shielding material.

7. A display device comprising:

a display panel; and

an input sensing unit comprising a sensing electrode and disposed directly on the display panel,

wherein:

the display panel comprises:

a light emitting element comprising a first electrode disposed on a base insulation layer, a second electrode, and a light emitting layer disposed between the first electrode and the second electrode;

a pixel defining layer disposed between the second electrode and the base insulation layer, and comprising a first portion, in which an opening to expose the first electrode is defined, and a second portion, which is disposed adjacent to the first portion and has a thickness greater than that of the first portion; and

a plurality of insulation layers disposed on the second electrode;

one of the plurality of insulation layers comprises a first area, which overlaps the first portion of the pixel defining layer, and a second area, which overlaps the second portion of the pixel defining layer and has a thickness greater than that of the first area;

the plurality of insulation layers comprise a first inorganic layer contacting the second electrode, a second inorganic layer disposed on the first inorganic layer, an organic layer disposed on the second inorganic layer, a third inorganic layer disposed on the organic layer, and a fourth inorganic layer disposed on the third inorganic layer; and

the one of the plurality of insulation layers is one of the first inorganic layer, the second inorganic layer, the organic layer, and the third inorganic layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 3, 2019
From: LEE, HYEONBUM; KIM, HYOENG-KI; PARK, KWANGWOO; JUNG, JIN-WHAN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 048776/0109 →
Priority Claims (1)
KR 10-2018-0042833 · Apr 12, 2018 · national
Continuity (1)
Related Publication 20190319075A1 · Oct 17, 2019
Cited By (4)
US 12,236,031 US 12,360,565 US 12,648,288 US 12,713,773