Display on a stretchable substrate

Patent metadata

Field	Value
Publication number	US-9947262-B2
Application number	US-201615257865-A
Country	US
Kind code	B2
Filing date	Sep 6, 2016
Priority date	Jun 6, 2016
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A display comprises a plurality of autonomous pixels on a stretchable substrate. Each autonomous pixel comprises a display element and a control element arranged to sense an external stimulus and to generate, entirely within the autonomous pixel, a control signal to drive the display element based, at least in part, on a magnitude of the sensed external stimulus. The stretchable substrate comprises a plurality of less elastic regions separated by stretchable areas, where the less elastic regions are less stretchable than the surrounding stretchable areas and each control element of an autonomous pixel is located in or on a less elastic region of the stretchable substrate.

First claim

The invention claimed is:

1. A display comprising:
a plurality of autonomous pixels on a stretchable substrate, an autonomous pixel comprising:
a display element and
a control element arranged to sense an external stimulus and to generate, entirely within the autonomous pixel, a control signal to drive the display element based, at least in part, on a magnitude of the sensed external stimulus

and the stretchable substrate comprising a plurality of less elastic regions separated by stretchable areas,
wherein the less elastic regions are less stretchable than the surrounding stretchable areas, and wherein each control element of an autonomous pixel is located in or on one of the less elastic regions of the stretchable substrate.

2. A display according to claim 1 , wherein the stretchable substrate comprises:
a uniformly stretchable layer; and
a layer of variable thickness attached to at least one face of the uniformly stretchable layer.

3. A display according to claim 2 , wherein the layer of variable thickness comprises regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

4. A display according to claim 2 , wherein the layer of variable thickness comprises regions with no apertures separated by areas with one or more apertures, wherein the regions with the one or more apertures correspond to the stretchable areas of the stretchable substrate.

5. A display according to claim 1 , wherein the stretchable substrate comprises:
a uniformly stretchable layer; and
a layer of variable stretchiness formed from a plurality of different materials with different material properties.

6. A display according to claim 1 , wherein the stretchable substrate comprises regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

7. A display according to claim 1 , wherein the stretchable substrate comprises:
a uniformly stretchable layer; and
a layer of material which changes stretchiness when exposed to heat, UV or light.

8. A display according to claim 1 , wherein the stretchable substrate is formed from a material which changes stretchiness when exposed to heat, UV or light.

9. A method of fabricating a display comprising a plurality of autonomous pixels, the method comprising:
forming a stretchable substrate comprising a plurality of less elastic regions separated by stretchable areas, wherein the less elastic regions are less stretchable than the surrounding stretchable areas; and
forming a plurality of autonomous pixels on the stretchable substrate, each autonomous pixel comprising a display element and a control element arranged to sense an external stimulus and to generate, entirely within the autonomous pixel, a control signal to drive the display element based, at least in part, on a magnitude of the sensed external stimulus and wherein each control element of an autonomous pixel is located in or on one of the less elastic regions of the stretchable substrate.

10. A method according to claim 9 , wherein forming a stretchable substrate comprises:
attaching a layer of variable thickness to at least one face of a uniformly stretchable layer.

11. A method according to claim 10 , wherein the layer of variable thickness comprises regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

12. A method according to claim 10 , wherein the layer of variable thickness comprises regions with no apertures separated by areas with one or more apertures, wherein the regions with the one or more apertures correspond to the stretchable areas of the stretchable substrate.

13. A method according to claim 10 , wherein forming a stretchable substrate comprises:
selectively removing material from at least one face of a uniformly stretchable layer to form a layer of variable thickness comprising regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

14. A method according to claim 10 , wherein forming a stretchable substrate comprises:
applying a layer of material to a uniformly stretchable layer, wherein the material changes stretchiness when exposed to heat, UV or light; and
selectively exposing regions of the material to form the less elastic regions separated by stretchable areas.

15. A method of fabricating a display comprising a plurality of autonomous pixels, the method comprising:
forming a plurality of autonomous pixels on a uniformly stretchable layer, each autonomous pixel comprising a display element and a control element arranged to sense an external stimulus and to generate, entirely within the autonomous pixel, a control signal to drive the display element based, at least in part, on a magnitude of the sensed external stimulus; and
adding material to or removing material from the uniformly stretchable layer to form a plurality of less elastic regions separated by stretchable areas, wherein the less elastic regions are less stretchable than the surrounding stretchable areas and wherein each control element of an autonomous pixel is located in or on one of the less elastic regions of the stretchable substrate.

16. A method according to claim 15 , wherein adding material to or removing material from the uniformly stretchable layer comprises:
attaching a layer of variable thickness to at least one face of a uniformly stretchable layer.

17. A method according to claim 16 , wherein the layer of variable thickness comprises regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

18. A method according to claim 16 , wherein the layer of variable thickness comprises regions with no apertures separated by areas with one or more apertures, wherein the regions with the one or more apertures correspond to the stretchable areas of the stretchable substrate.

19. A method according to claim 15 , wherein adding material to or removing material from the uniformly stretchable layer comprises:
selectively removing material from at least one face of the uniformly stretchable layer to form a layer of variable thickness comprising regions of a first thickness separated by areas of a second thickness, wherein the first thickness is greater than the second thickness and the regions of the first thickness correspond to the less elastic regions of the stretchable substrate.

20. A method according to claim 15 , wherein adding material to or removing material from the uniformly stretchable layer comprises:
applying a layer of material to the uniformly stretchable layer, wherein the material changes stretchiness when exposed to heat, UV and/or light; and
selectively exposing regions of the material to form the less elastic regions separated by stretchable areas.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Hodges Stephen Edward
• Chen Nicholas Yen-Cherng
• Sweeney David
• Thieme Anja
• Grosse-Puppendahl Tobias
• Steiner Helene

Classifications

• B32B2307/202

  Conductive · CPC title

• H01L27/1446

  Electricity · mapped topic

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• G09G2300/0469

  Details of the physics of pixel operation · CPC title

• H01L27/1218

  Electricity · mapped topic