IP Library › Granted Patent US 12,490,639
Granted Patent B2
US 12,490,639 · App. 17/659,291 · Granted Dec 2, 2025

Display device and method of manufacturing the same

Inventors: Jooil Kim (Cheonan-si, KR); Kwangrae Lee (Seoul, KR); Myoung-Ha Jeon (Asan-si, KR); Sujin Jung (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H10K59/8791H10K59/12H10K59/1201H10K59/8731H10K77/111H10K2102/311
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Quick Facts
Patent No.
US 12,490,639
App. No.
17/659,291
Granted
Dec 2, 2025
Kind
B2
Abstract

A display device includes: a display panel having a first area, a second area spaced apart from the first area in a first direction, and a bending area between the first area and the second area; a polarization layer in the first area on the display panel; and a bending protection layer on the display panel and including: a pre-formed bending protection layer spaced apart from the polarization layer in the first direction; a first post-formed bending protection layer between the polarization layer and the pre-formed bending protection layer; and a second post-formed bending protection layer spaced apart from the first post-formed bending protection layer with the pre-formed bending protection layer interposed therebetween.

Claims (23)

1 . A method of manufacturing a display device comprising:

forming a display panel having a first area, a second area spaced apart from the first area in a first direction, and a bending area between the first area and the second area;

forming a polarization layer in the first area on the display panel;

forming a pre-formed bending protection layer on the display panel in the bending area, wherein the pre-formed bending protection layer is spaced apart from the polarization layer in the first direction; and

forming a post-formed bending protection layer on the display panel wherein the post-formed bending protection layer includes a first post-formed bending protection layer between the polarization layer and the pre-formed bending protection layer and at least partially overlapping the pre-formed bending protection layer in the bending area, and a second post-formed bending protection layer spaced apart from the first post-formed bending protection layer with the pre-formed bending protection layer interposed therebetween and the second post-formed bending protection layer at least partially overlapping the pre-formed bending protection layer in the bending area.

2 . The method of claim 1 , wherein the forming of the pre-formed bending protection layer includes:

forming a first curable material layer on the display panel by applying a first curable material to a first forming area spaced apart from the polarization layer in the first direction; and

forming the pre-formed bending protection layer by pre-curing the first curable material layer.

3 . The method of claim 2 , wherein the forming of the post-formed bending protection includes:

forming a second curable material layer and a third curable material layer on the display panel by applying a second curable material to a second forming area between the polarization layer and the first forming area and a third forming area adjacent to the first forming area in the first direction; and

forming the first post-formed bending protection layer and the second post-formed bending protection layer by curing the second curable material layer and the third curable material layer.

4 . The method of claim 3 , wherein the third curable material layer is formed before the second curable material layer.

5 . The method of claim 3 , wherein the second curable material is the same as the first curable material.

6 . The method of claim 3 , wherein the third curable material layer is spaced apart from the second curable material layer with the pre-formed bending protection layer interposed therebetween.

7 . The method of claim 1 , wherein at least a portion of the pre-formed bending protection layer overlaps the bending area.

8 . The method of claim 1 , wherein at least a portion of the first post-formed bending protection layer overlaps the first area, and

wherein at least a portion of the second post-formed bending protection layer overlaps the second area.

9 . The method of claim 1 , wherein the first post-formed bending protection layer directly contacts the polarization layer and the pre-formed bending protection layer, and

wherein the second post-formed bending protection layer directly contacts the pre-formed bending protection layer.

10 . The method of claim 1 , wherein an average distance between a lower surface of the display panel and an upper surface of a bending protection layer including the pre-formed bending protection layer and the post-formed bending protection layer is less than an average distance between the lower surface of the display panel and an upper surface of the polarization layer.

11 . The method of claim 1 , wherein the pre-formed bending protection layer extends in a second direction crossing the first direction.

12 . The method of claim 11 , wherein an edge of the first post-formed bending protection layer contacting the pre-formed bending protection layer extends in the second direction, and

wherein an edge of the second post-formed bending protection layer contacting the pre-formed bending protection layer extends in the second direction and is spaced apart from the edge of the first post-formed bending protection layer in the first direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2022
From: KIM, JOOIL; LEE, KWANGRAE; JEON, MYOUNG-HA; JUNG, SUJIN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 059744/0644 →
Priority Claims (1)
KR 10-2021-0052447 · Apr 22, 2021 · national
Continuity (1)
Related Publication 20220344618A1 · Oct 27, 2022
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