Polymer Substrate for Flexible Display Having Enhanced Flexibility

• US 20100178452A1
• Filed: 09/09/2008
• Published: 07/15/2010
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Sung, Young Chul, Cho, Dong Ho, Yoon, Choon Sup
• Granted Patent: US 8,167,628 B2
• Time in Patent Office: Days
• US Class Current: 428/107
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y10T 428/24074 Strand or strand-portions
• CPC Class Codes: Y10T 428/24917 including metal layer
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31678 Of metal
• CPC Class Codes: Y10T 428/31681 Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]

Abstract

Disclosed herein is a polymer substrate for a flexible display, comprising a reticular superelastic alloy structure and/or an annular superelastic alloy structure therein. The polymer substrate has an improved flexibility because the superelastic alloy structure is embedded therein.

Claims

1. A polymer substrate for a flexible display, comprising a superelastic alloy structure therein.

2. The polymer substrate of claim 1, wherein the superelastic alloy structure is one of a reticular and an annular superelastic alloy structure.

3. The polymer substrate of claim 1, comprising a reticular superelastic alloy structure and an annular superelastic alloy structure, wherein the reticular superelastic alloy structure and annular superelastic alloy structure are embedded and layered in the polymer substrate.

4. The polymer substrate according to claim 1, wherein the polymer substrate is made of any one selected from the group consisting of polyethylene naphthalate (PEN), polycarbonate (PC), and polyethylene terephthalate (PET).

5. The polymer substrate according to claim 2, wherein the reticular superelastic alloy structure has a frame along an outer circumference thereof

6. The polymer substrate according to claim 2, wherein the reticular superelastic alloy structure is made of any one selected from the group consisting of Ni—

Ti, Ni—

Al, Cu—

Zn—

Ni, Cu—

Al—

Ni, Cu—

Al—

Mn, Ti—

Ni—

Cu—

Mo, Co—

Ni—

Ga—

Fe, Ag—

Ni, Au—

Cd, Fe—

Pt, Fe—

Ni, and In—

Cd.

7. The polymer substrate according to claim 2, wherein the annular superelastic alloy structure is made of any one selected from the group consisting of Ni—

Ti, Ni—

Al, Cu—

Zn—

Ni, Cu—

Al—

Ni, Cu—

Al—

Mn, Ti—

Ni—

Cu—

Mo, Co—

Ni—

Ga—

Fe, Ag—

Ni, Au—

Cd, Fe—

Pt, Fe—

Ni, and In—

Cd.

10. The polymer substrate according to claim 3, wherein the annular superelastic alloy structure is made of any one selected from the group consisting of Ni—

Ti, Ni—

Al, Cu—

Zn—

Ni, Cu—

Al—

Ni, Cu—

Al—

Mn, Ti—

Ni—

Cu—

Mo, Co—

Ni—

Ga—

Fe, Ag—

Ni, Au—

Cd, Fe—

Pt, Fe—

Ni, and In—

Cd.

8. A flexible display, comprising a polymer substrate including a superelastic alloy structure therein.

9. The flexible display of claim 8, wherein the superelastic alloy structure is at least one of a reticular and an annular superelastic alloy structure.