Cover window and display device including the same

Patent metadata

Field	Value
Publication number	US-10299390-B2
Application number	US-201615384794-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Dec 31, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

There is provided a cover window including a first region; and second regions at both sides of the first region, wherein the first region has a stiffness being different from the second regions, and the stiffness of an interface region between the first region and the second region is gradually changed.

First claim

What is claimed is:

1. A cover window, comprising:
a first region; and
second regions at both sides of the first region,
wherein the first region has a stiffness being different from the second regions, and the stiffness of an interface region between the first region and the second region is gradually changed,
wherein each of the first and second regions includes a block-copolymer having first and second units, and the first unit has a stiffness being smaller than the second unit, and
wherein a mole fraction of the first unit in the first region is different from that of the second unit in the first region, and the mole fraction of the second unit in the second region is different from that of the first unit in the second region.

2. The cover window according to claim 1 ,
wherein a surface morphology in the first region, the second region and the interface region is different.

3. The cover window according to claim 1 ,
wherein the stiffness of the second region is greater than the first region.

4. The cover window according to claim 3 , further comprising:
third regions at outer sides of the second regions; and
fourth regions between each second region and each third region,
wherein the stiffness of the third region is greater than the fourth region and is equal to or greater than the second region, and the stiffness of the fourth region is equal to or greater than the first region.

5. The cover window according to claim 1 ,
wherein the hardness of the second region is greater than the first region.

6. The cover window according to claim 5 ,
further comprising:
third regions at outer sides of the second regions; and
fourth regions between each second region and each third region,
wherein the hardness of the third region is greater than the fourth region and is equal to or greater than the second region, and the hardness of the fourth region is equal to or greater than the first region.

7. The cover window according to claim 1 ,
wherein the stiffness of the first region is greater than the second region.

8. The cover window according to claim 1 ,
wherein the hardness of the first region is greater than the second region.

9. The cover window according to claim 1 ,
wherein the first region, the second region and the interface region have substantially the same refractive index.

10. The cover window according to claim 1 ,
wherein a mole fraction of the first unit in the first region is greater than that of the second unit in the first region, and the mole fraction of the second unit in the second region is greater than that of the first unit in the second region.

11. The cover window according to claim 1 ,
wherein a mole fraction of the second unit in the first region is greater than that of the first unit in the first region, and the mole fraction of the first unit in the second region is greater than that of the second unit in the second region.

12. A cover window, comprising:
a first region; and
second regions at both sides of the first region,
wherein the first region has a stiffness being different from the second regions, and the first region, the second region and an interface region between the first region and the second region have a difference in a surface morphology,
wherein each of the first and second regions includes a block-copolymer having first and second units, and the first unit has a stiffness being smaller than the second unit, and
wherein a mole fraction of the first unit in the first region is different from that of the second unit in the first region, and the mole fraction of the second unit in the second region is different from that of the first unit in the second region.

13. The cover window according to claim 12 ,
wherein the first region, the second region and the interface region have substantially the same refractive index.

14. The cover window according to claim 12 ,
wherein a mole fraction of the first unit in the first region is greater than that of the second unit in the first region, and the mole fraction of the second unit in the second region is greater than that of the first unit in the second region.

15. The cover window according to claim 12 ,
wherein a mole fraction of the second unit in the first region is greater than that of the first unit in the first region, and the mole fraction of the first unit in the second region is greater than that of the second unit in the second region.

16. A display device, comprising:
a display panel; and
a cover window at a surface of the display panel and including a first region and second regions at both sides of the first region,
wherein the first region has a stiffness being different from the second regions, and the stiffness of an interface region between the first region and the second region is gradually changed,
wherein each of the first and second regions includes a block-copolymer having first and second units, and the first unit has a stiffness being smaller than the second unit, and
wherein a mole fraction of the first unit in the first region is different from that of the second unit in the first region, and the mole fraction of the second unit in the second region is different from that of the first unit in the second region.

17. The display device according to claim 16 , wherein the first region and the second regions correspond to a display surface of the display panel.

18. A di splay device, comprising:
a display panel including a front surface and side surfaces; and
a cover including a plurality of first regions and a second region between the plurality of first regions,
wherein the second region has a stiffness that is greater than the plurality of first regions,
wherein the plurality of first regions respectively cover the side surfaces, and the second region covers the front surface,
wherein each of the first and second regions includes a block-copolymer having first and second units, and the first unit has a stiffness that is smaller than the second unit, and
wherein a mole fraction of the first unit in the first region is different from that of the second unit in the first region, and the mole fraction of the second unit in the second region is different from that of the first unit in the second region.

19. The display device according to claim 18 , wherein the plurality of first regions and the second region have substantially the same refractive index.

20. The display device according to claim 18 , wherein the cover further includes: a plurality of third regions at an outer side of the plurality of first regions and covering a rear surface of the display panel, and
wherein each of the third regions has a stiffness greater than the plurality of first regions.

Assignees

• Lg Display Co Ltd

Inventors

• Ki Nam
• Park Jae-Hyoung
• Lee Gyu-Ho

Classifications

• H01L2251/5338

  Electricity · mapped topic

• G02F2202/022

  polymeric · CPC title

• G02F2001/133331

  Physics · mapped topic

• H04M1/0266

  for a display module assembly · CPC title

• H04M1/185

  Improving the shock resistance of the housing, e.g. by increasing the rigidity · CPC title