Window and display device having the same

Patent metadata

Field	Value
Publication number	US-10224502-B2
Application number	US-201615178345-A
Country	US
Kind code	B2
Filing date	Jun 9, 2016
Priority date	Oct 2, 2015
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A display device including a display panel and a window. The display panel includes a first curved display portion. The window covers the display panel and includes a base substrate having a light transmittance. The base substrate includes a bent portion. The bent portion is defined by bending at least a portion of the base substrate and covers the first curved display portion. The base substrate includes a composition material comprising a plurality of different polymer materials.

First claim

What is claimed is:

1. A display device comprising:
a display panel comprising a first base substrate and a plurality of pixels on the first base substrate, the display panel having a first curved display portion; and
a window on and covering the display panel and comprising a second base substrate having a light transmittance, the plurality of pixels disposed between the first base substrate and the second base substrate, the second base substrate being formed of a composition material comprising a plurality of different polymer materials and comprising a bent portion covering the first curved display portion.

2. The display device of claim 1 , wherein the bent portion is bent at an angle exceeding about 90 degrees and less than about 200 degrees with respect to the second base substrate.

3. The display device of claim 1 , wherein the bent portion is bent at an angle exceeding about 30 degrees and equal to or less than about 90 degrees with respect to the second base substrate.

4. The display device of claim 1 , wherein the different polymer materials comprise a first polymer having a continuous phase and a second polymer having a dispersed phase.

5. The display device of claim 4 , wherein the first polymer is present in an amount of about 60 weight percent to about 95 weight percent with respect to the total material of the second base substrate, and the second polymer is present in an amount of about 5 weight percent to about 40 weight percent with respect to the total material of the second base substrate.

6. The display device of claim 4 , wherein the first polymer comprises polycarbonate (PC), and the second polymer comprises at least one of polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethersulfone (PES), and polyethylene naphthalate (PEN).

7. The display device of claim 4 , wherein the second polymer comprises two different polymer materials, and each of the two different polymer materials has a dispersed phase.

8. The display device of claim 4 , wherein the composition material further comprises a compatibilizer to uniformly disperse the second polymer.

9. The display device of claim 1 , wherein the window further comprises a coating layer on the second base substrate, the coating layer comprising:
a first layer on a front surface of the second base substrate; and
a second layer on a rear surface of the second base substrate, the rear surface of the second base substrate facing the plurality of the pixels, and
wherein the first layer has a thickness greater than a thickness of the second layer.

10. The display device of claim 1 , wherein the second base substrate comprises a plurality of bent portions, and two of the bent portions from among the plurality of bent portions are symmetrical with each other with respect to a reference line crossing a center of the second base substrate.

11. The display device of claim 1 , wherein the second base substrate comprises a plurality of bent portions, and two of the bent portions from among the plurality of bent portions are asymmetrical with each other with respect to a reference line crossing a center of the second base substrate.

12. The display device of claim 1 , wherein the second base substrate comprises a plurality of bent portions, and each of the bent portions is bent in a rear direction of the window.

13. The display device of claim 1 , wherein the second base substrate comprises a plurality of bent portions, and
wherein at least one of the bent portions is bent in a front direction of the window, and at least one of the bent portions is bent in a rear direction of the window.

14. The display device of claim 1 , wherein the second base substrate comprises a plurality of bent portions, and the bent portions correspond to edges of the second base substrate in a one-to-one correspondence.

15. The display device of claim 14 , wherein a corner portion of the second base substrate between two adjacent ones of the bent portions is cut.

16. The display device of claim 1 , wherein the second base substrate further comprises a sub-bent portion bent at an angle less than the bent portion, and
wherein the display panel further comprises a second curved display portion covered by the sub-bent portion.

17. The display device of claim 16 , wherein the bent portion is bent at an angle exceeding about 90 degrees and less than about 200 degrees with respect to the second base substrate, and the sub-bent portion is bent at an angle exceeding about 30 degrees and equal to or less than about 90 degrees with respect to the second base substrate.

18. The display device of claim 16 , wherein the bent portion and the sub-bent portion are bent in a rear direction of the window.

19. The display device of claim 16 , wherein the bent portion is bent in one of a front direction and a rear direction of the window, and the sub-bent portion is bent in the other of the front direction and the rear direction.

20. The display device of claim 1 , wherein the display panel further comprises a flat display portion, and
wherein the second base substrate further comprises a flat cover portion extending from the bent portion and covering the flat display portion of the display panel.

21. The display device of claim 1 , further comprising a light blocking layer on an edge of the base substrate,
wherein a portion of the light blocking layer is on the bent portion.

22. A display device comprising:
a display panel comprising a first curved display portion; and
a window covering the display panel and comprising a base substrate having a light transmittance, the base substrate being formed of a composition material comprising a plurality of different polymer materials and comprising a bent portion covering the first curved display portion,
wherein the display panel further comprises a main curved display portion extending from the first curved display portion, the main curved display portion having a radius of curvature greater than a radius of curvature of the first curved display portion, and
wherein the base substrate further comprises a curved cover portion extending from the bent portion, the curved cover portion having a radius of curvature greater than a radius of curvature of the bent portion and covering the main curved display portion.

23. A window covering a light emitting surface of a display device, the window comprising:
a base substrate having a light transmittance, the base substrate having a front surface and a rear surface closer to the light emitting surface than the front surface is in a cross-sectional view, with the light emitting surface of the display device facing the base substrate in the cross-sectional view, and the base substrate being formed of a composition material comprising a plurality of different polymer materials and comprising a bent portion; and
a coating layer on at least one of the front surface and the rear surface.

24. The window of claim 23 , wherein the bent portion is bent at an angle exceeding about 90 degrees and less than about 200 degrees with respect to the base substrate.

25. The window of claim 23 , wherein the bent portion is bent at an angle exceeding about 30 degrees and equal to or less than about 90 degrees with respect to the base substrate.

26. The window of claim 23 , wherein the different polymer materials comprise a first polymer having a continuous phase and a second polymer having a di

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Jonghwan
• Seo Hyunseung

Classifications

• G06F1/1652

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

• G06F1/1637

  Details related to the display arrangement, including those related to the mounting of the display in the housing · CPC title

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• B05D7/50

  Multilayers · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title