IP Library Granted Patent US 12,648,341
Granted Patent B2
US 12,648,341 · App. 18/063,566 · Granted Jun 2, 2026

Display apparatus and method of manufacturing the same

Inventors: Seon Uk Lee (Seongnam-si, KR); Kanguk Kim (Hwaseong-si, KR); Donchan Cho (Seongnam-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K59/877H10K59/38H10K71/00H10K59/12H10K59/1201
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Quick Facts
Patent No.
US 12,648,341
App. No.
18/063,566
Granted
Jun 2, 2026
Kind
B2
Abstract

A display apparatus includes: a display element layer having first to third light-emitting regions and a non-light-emitting region, and including light-emitting elements along one direction and corresponding to the first to third light-emitting regions to provide source light; a light control unit on the display element layer, and including a base resin and scatters, and having openings overlapping with the first and second light-emitting regions; light conversion units in the openings, and including quantum dots; and first to third color filters on the light control unit and the light conversion units, and overlapping with the first to third light-emitting regions. The light control unit includes a first portion overlapping with the non-light-emitting region, and a second portion overlapping with the third light-emitting region, that form a step difference with each other; and a width of the first portion is greater than a thickness of the second portion.

Claims (42)

1 . A display apparatus comprising:

a display element layer having first to third light-emitting regions, and a non-light-emitting region surrounding the first to third light-emitting regions, the display element layer comprising a plurality of light-emitting elements located along one direction and corresponding to the first to third light-emitting regions, respectively, each of the light-emitting elements configured to provide source light;

a light control unit on the display element layer, the light control unit comprising a base resin and scatters, and having openings overlapping with the first and second light-emitting regions, respectively;

light conversion units in the openings, respectively, and comprising quantum dots; and

first to third color filters on the light control unit and the light conversion units, and overlapping with the first to third light-emitting regions, respectively,

wherein:

the light control unit comprises a first portion overlapping with the non-light-emitting region, and a second portion overlapping with the third light-emitting region, the first portion and the second portion comprising the same material as each other, and forming a step difference with each other;

a width of the first portion in the one direction is greater than a thickness of the second portion in a thickness direction crossing the one direction;

the first portion and the second portion include a first surface and a second surface, respectively, each of the first surface and the second surface facing the display element layer; and

the second surface of the second portion is spaced farther from the display element layer than the first surface of the first portion in the thickness direction.

2 . The display apparatus of claim 1 , wherein, in a plan view, the width of the first portion corresponds to a distance between one end of the first portion defining an opening adjacent to the second portion and another end of the first portion forming the step difference.

3 . A display apparatus comprising:

a display element layer having first to third light-emitting regions, and a non-light-emitting region surrounding the first to third light-emitting regions, the display element layer comprising a plurality of light-emitting elements located along one direction and corresponding to the first to third light-emitting regions, respectively, each of the light-emitting elements configured to provide source light;

a light control unit on the display element layer, the light control unit comprising a base resin and scatters, and having openings overlapping with the first and second light-emitting regions, respectively;

light conversion units in the openings, respectively, and comprising quantum dots; and

first to third color filters on the light control unit and the light conversion units, and overlapping with the first to third light-emitting regions, respectively,

wherein:

the light control unit comprises a first portion overlapping with the non-light-emitting region, and a second portion overlapping with the third light-emitting region, the first portion and the second portion comprising the same material as each other, and forming a step difference with each other;

a width of the first portion in the one direction is greater than a thickness of the second portion in a thickness direction crossing the one direction; and

the thickness of the second portion is smaller than a thickness of each of the light conversion units.

4 . The display apparatus of claim 1 , wherein a difference between the width of the first portion and the thickness of the second portion is about 6 micrometers or more.

5 . The display apparatus of claim 1 , wherein the first portion surrounds the second portion in a plan view.

6 . The display apparatus of claim 1 , wherein the light control unit surrounds the light conversion units in a plan view.

7 . The display apparatus of claim 1 , wherein at least two color filters from among the first to third color filters overlap with each other at the non-light-emitting region.

8 . The display apparatus of claim 1 , wherein the first to third color filters have different colors from each other.

9 . An electronic apparatus comprising:

a display apparatus comprising:

a display element layer having first to third light-emitting regions, and a non-light-emitting region surrounding the first to third light-emitting regions, the display element layer comprising a plurality of light-emitting elements located along one direction and corresponding to the first to third light-emitting regions, respectively, each of the light-emitting elements configured to provide source light;

a light control unit on the display element layer, the light control unit comprising a base resin and scatters, and having openings overlapping with the first and second light-emitting regions, respectively:

light conversion units in the openings, respectively, and comprising quantum dots; and

first to third color filters on the light control unit and the light conversion units, and overlapping with the first to third light-emitting regions, respectively, wherein:

the light control unit comprises a first portion overlapping with the non-light-emitting region, and a second portion overlapping with the third light-emitting region, the first portion and the second portion comprising the same material as each other, and forming a step difference with each other;

a width of the first portion in the one direction is greater than a thickness of the second portion in a thickness direction crossing the one direction;

the first to third color filters have different colors from each other;

the light conversion units comprise:

a first light conversion unit overlapping with the first light-emitting region, and comprising a first quantum dot configured to convert the source light into a first light; and

a second light conversion unit overlapping with the second light-emitting region, and comprising a second quantum dot configured to convert the source light into a second light different from the first light;

the first light conversion unit overlaps with the first color filter;

the second light conversion unit overlaps with the second color filter; and

the light control unit overlaps with the third color filter.

10 . The electronic apparatus of claim 9 , wherein at least one of the first light conversion unit or the second light conversion unit further comprises scatterers.

11 . The display apparatus of claim 1 , further comprising a low refractive index layer between the first to third color filters and the light control unit, and covering the first to third color filters.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 23, 2022
From: LEE, SEON UK; KIM, KANGUK; CHO, DONCHAN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 062197/0445 →
Priority Claims (1)
KR 10-2022-0020514 · Feb 17, 2022 · national
Continuity (1)
Related Publication 20230263008A1 · Aug 17, 2023
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