IP Library Granted Patent US 12,575,237
Granted Patent B2
US 12,575,237 · App. 17/994,662 · Granted Mar 10, 2026

Manufacturing method for display device and display device manufactured using the same

Inventors: Jun Young Lee (Yongin-si, KR); Si Joon Song (Yongin-si, KR); Youn Woong Kang (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H10H20/857H05K1/189H10H20/01H10H20/8312H10H20/84H10H20/034H10H20/0364
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Quick Facts
Patent No.
US 12,575,237
App. No.
17/994,662
Granted
Mar 10, 2026
Kind
B2
Abstract

A method for manufacturing a display device includes providing a display layer including a light emitting element; providing a first coupling layer on the display layer; providing a chassis module including a chassis, a second coupling layer, and a chip-on-film; moving the chassis module; and disposing the chassis module on the first coupling layer.

Claims (55)

1 . A method for manufacturing a display device, the method comprising:

providing a display layer including a light emitting element;

providing a first coupling layer on the display layer;

providing a chassis module including a chassis, a second coupling layer, and a chip-on-film;

moving the chassis module; and

disposing the chassis module on the first coupling layer,

wherein the disposing of the chassis module on the first coupling layer includes deforming the first coupling layer and the second coupling layer by compressing the chassis module.

2 . The method of claim 1 , comprising:

disposing an overcoat layer on an area of the display layer; and

disposing an outer film layer on the overcoat layer.

3 . The method of claim 1 , wherein the disposing of the chassis module on the first coupling layer includes allowing the first coupling layer to electrically connect a line included in the display layer and the chip-on-film to each other.

4 . The method of claim 3 , wherein, in the chassis module,

one surface of the second coupling layer contacts the chassis, and

another surface of the second coupling layer contacts the chip-on-film.

5 . The method of claim 4 , wherein the disposing of the chassis module on the first coupling layer includes allowing the chip-on-film of the chassis module to face the first coupling layer.

6 . The method of claim 1 , wherein the moving of the chassis module includes simultaneously moving the chassis and the chip-on-film.

7 . The method of claim 6 , wherein the chassis module is moved by using a vacuum pick-up method or an electromagnet.

8 . The method of claim 1 , wherein the disposing of the chassis module on the first coupling layer includes:

allowing the chassis to be connected to the display layer by the first coupling layer and the second coupling layer; and

allowing the chip-on-film to be connected to the display layer by the first coupling layer.

9 . The method of claim 1 , wherein the disposing of the chassis module on the first coupling layer includes curing the first coupling layer and the second coupling layer.

10 . The method of claim 2 , wherein, in an area in which the first coupling layer, the second coupling layer, the chip-on-film, and the chassis overlap one another in a plan view, a sum of thicknesses of the first coupling layer, the second coupling layer, the chip-on-film, and the chassis is equal to a sum of thicknesses of the overcoat layer and the outer film layer.

11 . The method of claim 1 , wherein the chassis is disposed at a side of the display device, and has a plate shape.

12 . The method of claim 11 , wherein the chassis has a thickness in a range of about 20 μm to about 100 μm.

13 . The method of claim 1 , wherein

the first coupling layer includes a conductive material and a resin material,

the second coupling layer includes a resin material without including any conductive material,

a portion of the second coupling layer contacts the first coupling layer, and another portion of the second coupling layer contacts the chassis.

14 . The method of claim 2 , wherein

the display layer includes a first area and a second area,

in the first area, the display layer overlaps the first coupling layer, the second coupling layer, the chip-on-film, and the chassis in a plan view, and

in the second area, the display layer overlaps the overcoat layer and the outer film layer in a plan view.

15 . A method for manufacturing a display device, the method comprising:

providing a display layer including a light emitting element;

providing a first coupling layer on the display layer;

connecting a chassis module to a chassis provider including a guide jig and a module catching part, the chassis module including a chassis, a second coupling layer, and a chip-on-film;

moving the display layer on which the first coupling layer is provided along a gravity direction to be adjacent to the chassis module;

disposing the chassis module on the display layer; and

allowing the display layer to be spaced apart from the chassis provider.

16 . The method of claim 15 , wherein the disposing of the chassis module on the display layer includes:

deforming the first coupling layer and the second coupling layer by compressing the chassis module; and

curing the first coupling layer and the second coupling layer.

17 . The method of claim 15 , wherein the module catching part includes an electromagnet, and is operated in a connection mode in which the module catching part is connected to the chassis module or a release module in which a connection between the module catching part and the chassis module is released.

18 . A display device manufactured according to the method of claim 15 .

19 . A display device comprising:

a display layer on a substrate, the display layer including a light emitting element;

an outer film layer on the display layer;

a flexible circuit board providing an electrical signal provided to the display layer;

a chip-on-film including one end connected to the display layer and another end connected to the flexible circuit board;

an anisotropic conductive film on the display layer, the anisotropic conductive film overlapping the chip-on-film in a plan view;

a non-conductive film on the anisotropic conductive film and the chip-on-film; and

a chassis on the non-conductive film, wherein

the anisotropic conductive film connects the chip-on-film to the display layer,

the non-conductive film connects the chassis to the anisotropic conductive film, and

the chassis has a plate shape not including any bending area.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 28, 2022
From: LEE, JUN YOUNG; SONG, SI JOON; KANG, YOUN WOONG
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 061889/0594 →
Priority Claims (1)
KR 10-2022-0024516 · Feb 24, 2022 · national
Continuity (1)
Related Publication 20230268475A1 · Aug 24, 2023
References Cited (25)
US 6862053B2 · Lee et al. · 2005 [cited by applicant]
US 7782417B2 · Ma et al. · 2010 [cited by applicant]
US 10330979B2 · Ryu et al. · 2019 [cited by applicant]
US 12210236B2 · Kang et al. · 2025 [cited by applicant]
US 20140056025A1 · Kang · 2014 [cited by examiner]
US 20160079333A1 · Shishido · 2016 [cited by examiner]
US 20180219136A1 · Narag, II · 2018 [cited by examiner]
US 20200096819A1 · Fan · 2020 [cited by applicant]
US 20200413559A1 · Lee · 2020 [cited by examiner]
US 20210405847A1 · Choi · 2021 [cited by examiner]
US 20220013507A1 · Zhang · 2022 [cited by examiner]
US 20240113086A1 · Fan · 2024 [cited by examiner]
US 20240324392A1 · Yamazaki · 2024 [cited by examiner]
JP 2000047209 · 2000 [cited by applicant]
KR 100640083 · 2006 [cited by applicant]
KR 1020170064111 · 2017 [cited by applicant]
KR 1020180077835 · 2018 [cited by applicant]
KR 102009663 · 2019 [cited by applicant]
KR 102047225 · 2019 [cited by applicant]
KR 200490966 · 2020 [cited by applicant]
KR 1020210001050A · 2021 [cited by applicant]
KR 1020210049578A · 2021 [cited by applicant]
KR 1020220002777A · 2022 [cited by applicant]
Notice of Allowance for U.S. Appl. No. 17/892,709, dated Sep. 13, 2023. [cited by applicant]
Korean Notice of Allowance corresponding to KR Application No. 10-2022-0024516, dated Aug. 26, 2025 (6 pages). [cited by applicant]