Granted Patent B2

US 12,513,830 · App. 17/748,894 · Granted Dec 30, 2025

Inventors: Chanhyeok Park (Paju-si, KR); Chikyung Sung (Seoul, KR)

Assignee: LG Display Co., Ltd.

H05K5/0017B32B3/266B32B5/18B32B7/12B32B2266/045B32B2457/20

Abstract

Claims (19)

1 . A display module, comprising:

a display panel;

a metal foam layer including a metal material with multiple pores in the metal material; and

an adhesive layer disposed between the display panel and the metal foam layer to adhere the metal foam layer to a back face of the display panel,

wherein each of the display panel, the adhesive layer, and the metal foam layer has at least one bendable area and at least one non-bendable area,

wherein at least one perforated pattern is disposed in the at least one bendable area of the metal foam layer,

wherein the at least one perforated pattern is an empty space devoid of the metal material and is larger in size than the multiple pores of the metal foam layer in the at least one non-bendable area, and

wherein, within the at least one bendable area of the metal foam layer, the at least one perforated pattern includes:

a first perforation pattern having a first width equal to an entire width of the at least one bendable area of the metal foam layer formed under the adhesive layer,

a second perforation pattern having a second width smaller than the first width, the second perforation pattern formed under the first perforation pattern, and

a third perforation pattern having a third width smaller than the second width, the third perforation pattern formed under the second perforation pattern,

wherein the first width, the second width, and the third width decrease with increasing distance from the back face of the display panel.

2 . The display module of claim 1 , wherein the at least one perforated pattern extends in a thickness direction of the metal foam layer.

3 . The display module of claim 2 , wherein the at least one perforated pattern has a width decreasing as the at least one perforated pattern extends from a vertical center thereof toward each of a top and a bottom thereof.

4 . The display module of claim 2 , wherein the at least one perforated pattern has an oval or a rhombus shape.

5 . The display module of claim 1 , wherein the at least one perforated pattern extends in a width direction of the metal foam layer.

6 . The display module of claim 5 , wherein the at least one perforated pattern has a thickness decreasing as the at least one perforated pattern extends from a horizontal center thereof toward each of both opposing sides thereof in the width direction.

7 . The display module of claim 1 , wherein one perforated pattern of the at least one perforated pattern in the at least one bendable area of the metal foam layer extends in a thickness direction of the metal foam layer and another perforated pattern of the at least one perforated pattern in the at least one bendable area of the metal foam layer extends in a width direction of the metal foam layer.

8 . The display module of claim 1 , wherein the adhesive layer is between the display panel and the metal foam layer to adhere the metal foam layer to the display panel.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (21)