Electronic device comprising transparent cover including glass and foldable display coupled thereto

Patent metadata

Field	Value
Publication number	US-12581797-B2
Application number	US-202217971460-A
Country	US
Kind code	B2
Filing date	Oct 21, 2022
Priority date	Apr 22, 2020
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

An example electronic device includes a transparent cover; and a flexible display coupled to the cover. The cover may include a first layer including glass; a second layer positioned between the first layer and the flexible display; and a third layer positioned between the first layer and the second layer. The third layer includes a pattern overlapping a folding part of the flexible display and including a plurality of grooves formed in a bonding surface with the second layer, and has a hardness greater than that of the second layer.

First claim

What is claimed is:

1 . An electronic device comprising:
a transparent cover that comprises a first section, a second section, and a folding section between the first section and the second section; and a flexible display coupled to the transparent cover, wherein the transparent cover comprises:
a first layer comprising glass; and included in the first, second, and folding sections,
a second layer between the first layer and the flexible display and included in the first, second, and folding sections,
a third layer between the first layer and the second layer and included in the first, second, and folding sections,
a fourth layer between a portion of the third layer and a portion of the second layer at the first section and comprising glass, and
a fifth layer between a portion of the third layer and a portion of the second layer at the second section and comprising glass,
wherein the first layer has a same thickness in the first section, the second section, and the folding section, wherein the third layer comprises a pattern including a plurality of grooves formed on a bonding surface with the second layer at the folding section, and has a hardness greater than a hardness of the second layer, and wherein the pattern of the third layer is between the fourth layer and the fifth layer.

2 . The electronic device of claim 1 , wherein at least one of the fourth layer or the fifth layer has a greater thickness than the thickness of the first layer.

3 . The electronic device of claim 1 , wherein the first layer has a thickness of 10 μm to 100 μm.

4 . The electronic device of claim 1 , wherein a difference in refractive index between the first layer and the third layer, a difference in refractive index between the second layer and the third layer, a difference in refractive index between the second layer and the fourth layer, a difference in refractive index between the second layer and the fifth layer, a difference in refractive index between the third layer and the fourth layer, and/or a difference in refractive index between the third layer and the fifth layer is 0.01 or less.

5 . The electronic device of claim 1 , wherein the first section and the second section face each other in a folded state of the electronic device.

6 . The electronic device of claim 1 , wherein the first section and the second section are positioned opposite to each other, in a folded state of the electronic device.

7 . The electronic device of claim 1 , wherein the third layer has a hardness of 20 to 90, based on a shore D hardness scale.

8 . The electronic device of claim 1 , wherein the second layer has an elongation rate of about 4% to about 20%.

9 . The electronic device of claim 1 , wherein the second layer or the third layer comprises an acryl-based, urethane-based, or silicone-based organic material.

10 . The electronic device of claim 1 , further comprising an electromagnetic induction panel configured to be coupled to or disposed adjacent to the flexible display, and to detect a pen input device.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Wooktae
• Kim Ingi
• Lee Wonho

Classifications

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• B32B2307/732

  Dimensional properties · CPC title

• B32B2307/536

  Hardness · CPC title

• B32B2307/418

  Refractive · CPC title

• B32B2307/412

  Transparent · CPC title