Electronic apparatus

Patent metadata

Field	Value
Publication number	US-11709293-B2
Application number	US-202016851392-A
Country	US
Kind code	B2
Filing date	Apr 17, 2020
Priority date	May 9, 2019
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

An electronic apparatus includes an electronic panel foldable together with a window; and a first functional layer and a second functional layer each foldable together with the window and the electronic panel. The second functional layer is disposed farther from the window than the first functional layer, and has a thickness in a range from about 30 micrometers to about 50 micrometers and a modulus in a range from about 3 gigapascals to about 8 gigapascals, and the first functional layer is disposed closer to the window than the second functional layer, and has both a thickness equal to or greater than that of the second functional layer, and a modulus less than that of the second functional layer.

First claim

What is claimed is:

1. An electronic apparatus comprising:
an electronic panel which provides an image and is foldable with respect to a folding axis;
a window which is foldable together with the electronic panel, with respect to the folding axis, and disposed on the electronic panel;
a plurality of functional layers between the electronic panel and the widow, the plurality of functional layers foldable together with the each other and with the window and the electronic panel;
the plurality of functional layers comprising a first functional layer, and a second functional layer which is disposed farther from the window than the first functional layer; and
adhesive layers which respectively couple the window to the first functional layer, and the second functional layer to the first functional layer,
wherein
the modulus of the first functional layer is from 1000 megapascals to 2000 megapascals at a temperature of about −20° C.,
the modulus of the first functional layer is from 200 megapascals to 1000 megapascals at room temperature,
the first functional layer includes any one of polyurethane, silicone, PEBA, and COPE,
the second functional layer which is disposed farther from the window than the first functional layer, has a thickness in a range from 30 micrometers to 0 micrometers together with a modulus in a range from 3 gigapascals to 8 gigapascals, and
the first functional layer has a thickness equal to or greater than that of the second functional layer together with a modulus less than that of the second functional layer.

2. The electronic apparatus of claim 1 , wherein
the thickness of the first functional layer is in a range from 50 micrometers to 100 micrometers, and
the modulus of the first functional layer is variable according to temperature.

3. The electronic apparatus of claim 1 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers.

4. The electronic apparatus of claim 2 , wherein the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers, and a modulus of the first functional layer is in a range from 1000 megapascals to 1800 megapascals at a temperature of about −20° C.

5. The electronic apparatus of claim 2 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers, and the modulus of the first functional layer is 100 megapascals or more at a temperature of about 80° C.

6. The electronic apparatus of claim 2 , wherein the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers, and the modulus of the first functional layer is 150 megapascals or more at a temperature of about 80° C.

7. The electronic apparatus of claim 1 , further comprising:
a cover panel facing the window, and
the electronic panel, the first functional layer and the second functional layer between the cover panel and the window which face each other.

8. The electronic apparatus of claim 1 , wherein each of the first and second functional layers is optically clear.

9. The electronic apparatus of claim 1 , wherein the window comprises glass.

10. The electronic apparatus of claim 9 , wherein the window further comprises a coating layer on a top surface of the window.

11. An electronic apparatus comprising:
an electronic panel which provides an image and is foldable with respect to a folding axis;
a window which is foldable together with the electronic panel, with respect to the folding axis;
a plurality of functional layers between the electronic panel and the widow, the plurality of functional layers foldable together with the each other and with the window and the electronic panel;
the plurality of functional layers comprising a first functional layer, and a second functional layer which is disposed farther from the window than the first functional layer; and
adhesive layers which respectively couple the window to the first functional layer, and the second functional layer to the first functional layer,
wherein
the first functional layer has a modulus in a range of 1000 megapascals to 1800 megapascals at a temperature of about −20° C.,
the first functional layer has a modulus in a range of 200 megapascals to 1000 megapascals at room temperature,
the first functional layer includes any one of polyurethane, silicone, PEBA, and COPE, and
the first functional layer has a thickness equal to or greater than a thickness of the second functional layer together with a modulus less than a modulus of the second functional layer.

12. The electronic apparatus of claim 11 , wherein the thickness of the second functional layer is in a range from 30 micrometers to 50 micrometers, and the modulus of the second functional layer is in a range from 3 gigapascals to 8 gigapascals.

13. The electronic apparatus of claim 12 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 100 micrometers.

14. The electronic apparatus of claim 11 , wherein the thickness of the first functional layer is in a range from 50 micrometers to 75 micrometers.

15. The electronic apparatus of claim 14 , wherein the modulus of the first functional layer is 100 megapascals or more at a temperature of about 80° C.

16. The electronic apparatus of claim 13 , wherein the thickness of the first functional layer is in a range from 75 micrometers to 100 micrometers.

17. The electronic apparatus of claim 16 , wherein the modulus of the first functional layer is 150 megapascals or more at a temperature of about 80° C.

18. The electronic apparatus of claim 11 , wherein the window comprises glass.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jeoungsub
• Shin Heonjung
• Oh Hyun Joon
• Yoon Daeho

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/873

  Encapsulations · CPC title

• G02B1/14 Primary

  Protective coatings, e.g. hard coatings · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• B32B7/02

  Physical, chemical or physicochemical properties · CPC title