Origami displays and methods for their manufacture

Patent metadata

Field	Value
Publication number	US-10502991-B2
Application number	US-201615017383-A
Country	US
Kind code	B2
Filing date	Feb 5, 2016
Priority date	Feb 5, 2015
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A flexible electronic display is provided. The display includes a substrate having a plurality of rigid portions, at least one display circuit positioned on a surface of each of the plurality of rigid portions, and at least one flexible interconnect electrically connected to the at least one display circuit. The at least one interconnect is flexible such that each of the plurality of rigid portions may be folded or stretched relative to one another.

First claim

What is claimed is:

1. An origami-based flexible electronic display, comprising:
a rigid substrate;
a plurality of creases formed in the rigid substrate thereby forming an origami pattern of a plurality of rigid portions;
a pixelated display portion attached to the plurality of rigid portions;
at least one display circuit positioned on a top surface of the plurality of the rigid portions;
a plurality of flexible serpentine-shaped interconnects in the creases and electrically connected to the at least one display circuit, wherein the plurality of serpentine-shaped interconnects are flexible and stretchable such that the plurality of rigid portions may be folded and stretched along the creases relative to one another according to the origami pattern;
wherein each of the pixelated display portions form an overall visual display on the electronic display when unfolded from an origami-folded and compact size to a flat configuration.

2. The flexible electronic display of claim 1 , wherein the at least one flexible serpentine-shaped interconnect comprises at least one conductor.

3. The flexible electronic display of claim 1 , wherein the plurality of pixelated display portions comprises at least one of a liquid crystal display (LCD), light emitting diode (LED) display, an organic light emitting diode (OLED) display, or a thin film display.

4. The flexible electronic display of claim 1 , further comprising
a top encapsulation layer extending from a first pixelated display portion for covering a first flexible serpentine-shaped interconnect extending between a first rigid portion and a second rigid portion to partially cover the first flexible serpentine-shaped interconnect during a folding process;
a bottom encapsulation layer extending from a second rigid portion for covering a second flexible serpentine-shaped interconnect extending between the first rigid portion and a third rigid portion to partially cover the second flexible serpentine-shaped interconnect during a folding process, and
wherein the top encapsulation layer or the bottom encapsulation layer is formed of polydimethylsiloxane and/or poly(p-xylylene).

5. The flexible electronic display of claim 4 , wherein the first rigid portion and the second rigid portion may be folded relative to one another at an angle of at least 60 degrees.

6. The flexible electronic display of claim 4 , further comprising at least one mechanical enhancing structure positioned between the first rigid portion and the second rigid portion.

7. The flexible electronic display of claim 6 , wherein the at least one mechanical enhancing structure is foldable.

8. The flexible electronic display of claim 7 , wherein the at least one mechanical enhancing structure is formed of poly(p-xylylene) or polytetrafluoroethylene.

9. The flexible electronic display of claim 4 , further comprising at least one air-tight or moisture-tight sealing layer applied to the at least one display circuit.

10. The flexible electronic display of claim 1 , wherein a first rigid portion and a second rigid portion may be twisted relative to one another.

11. The flexible electronic display of claim 1 , wherein the rigid substrate is a silicon wafer.

12. The flexible electronic display of claim 1 , wherein at least a portion of the at least one display circuit extends over one of the creases.

13. The flexible electronic display of claim 1 , wherein a first pixelated display portion is smaller than a second pixelated display portion.

Assignees

• Univ Arizona State
• The Arizona Board Of Regents On Behalf Of Arizona State Univ

Inventors

• Yu Hongyu
• Jiang Hanqing

Classifications

• G02F1/133305 Primary

  Flexible substrates, e.g. plastics, organic film · CPC title

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G09G2380/02

  Flexible displays · CPC title