Fabric cover layer for display device

Patent metadata

Field	Value
Publication number	US-9666107-B2
Application number	US-53245408-A
Country	US
Kind code	B2
Filing date	Mar 27, 2008
Priority date	Mar 30, 2007
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A display device comprising a substrate ( 100 ) accommodating at least one light emitting electro-optical device ( 101 ) and a fabric layer ( 102 ) arranged on said substrate ( 100 ) to receive at least part of the light emitted by said at least one light emitting electro-optical device ( 101 ) is provided. The backside ( 103 ) of said fabric layer is provided with at least one self-supporting recess ( 104 ), and said fabric layer ( 102 ) is arranged such that said at least one recess ( 104 ) is located in front of said at least one light emitting electro-optical device ( 101 ). A gap ( 108 ) separates said at least one light emitting electro-optical device ( 101 ) from the fabric material within said at least recess ( 104 ).

First claim

The invention claimed is:

1. A display device comprising:
a substrate accommodating at least one light emitting electro-optical device; and
a knitted fabric layer arranged on said substrate to receive at least part of the light emitted by said at least one light emitting electro-optical device,
wherein said knitted fabric layer comprises a backside facing said substrate and defining at least one pre-formed permanent self-supporting recess, wherein said recess is an intrinsic feature of the knitted fabric and is formed in the knitted fabric layer before the knitted fabric layer is arranged on said substrate,
and wherein said knitted fabric layer is arranged such that said at least one pre-formed permanent recess is located in front of said at least one light emitting electro-optical device, and a gap separates said at least one light emitting electro-optical device from the knitted fabric layer within said at least one pre-formed permanent self-supporting recess and provides a certain distance between said at least one light emitting electro-optical device from the knitted fabric layer so that a light projection of the at least one light emitting electro-optical device on the knitted fabric layer is enlarged.

2. The display device according to claim 1 , wherein said knitted fabric layer comprises a front side opposite to said back side, wherein said front side comprises at least one protrusion disposed for engaging said at least one recess on said back side.

3. The display device according to claim 1 , wherein the fiber density in a recess forming region of said knitted fabric layer is different from the fiber density in a region of said knitted fabric layer adjacent to said recess forming region.

4. The display device according to claim 1 , wherein at least one of a needle path, a loop length and a stitching density in a recess forming region of said knitted fabric layer is different from that in a region of said knitted fabric layer adjacent to said recess forming region.

5. The display device according to claim 1 , wherein a translucent material is arranged in said gap between said at least one light emitting electro-optical device and said knitted fabric layer in said at least one recess.

6. The display device according claim 5 , wherein said translucent material comprises a light scattering component.

7. The display device according to claim 1 , wherein said substrate is a flexible substrate bendable in at least one direction.

8. The display device according to claim 1 , wherein said substrate comprises reflective portions.

9. The display device according to claim 1 comprising a plurality of spaced apart light emitting electro-optical devices arranged in a first pattern, and
wherein said backside of said knitted fabric layer comprises a plurality of recesses arranged in a second pattern corresponding to said first pattern of light emitting electro-optical devices,
such that at least one of said recesses is arranged in front of at least one of said light emitting electro-optical devices.

10. A display device comprising:
a substrate accommodating at least one light emitting electro-optical device; and
a knitted fabric layer arranged on said substrate to receive at least part of the light emitted by said at least one light emitting electro-optical device,
wherein said knitted fabric layer comprises a backside facing said substrate and defining at least one pre-formed permanent self-supporting recess, wherein said recess is an intrinsic feature of the knitted fabric and is formed in the knitted fabric layer before the knitted fabric layer is arranged on said substrate,
and wherein said knitted fabric layer is arranged such that said at least one pre-formed permanent recess is located in front of said at least one light emitting electro-optical device, thereby ensuring that a gap exists between said at least one light emitting electro-optical device and the knitted fabric layer within said at least one pre-formed permanent self-supporting recess and thereby providing that a certain distance exists between said at least one light emitting electro-optical device and the knitted fabric layer so that a light projection of the at least one light emitting electro-optical device on the knitted fabric layer is enlarged.

11. A display device comprising:
a substrate comprising a dielectric material;
at least one light emitting electro-optical device attached to said substrate; and
a knitted fabric layer arranged on said substrate to receive at least part of the light emitted by said at least one light emitting electro-optical device,
wherein said knitted fabric layer comprises a backside facing said substrate and defining at least one pre-formed permanent self-supporting recess, wherein said recess is an intrinsic feature of the knitted fabric and is formed in the knitted fabric layer before the knitted fabric layer is arranged on said substrate,
and wherein said knitted fabric layer is arranged such that said at least one pre-formed permanent recess is located in front of said at least one light emitting electro-optical device, and a gap separates said at least one light emitting electro-optical device from the knitted fabric layer within said at least one pre-formed permanent self-supporting recess and provides a certain distance between said at least one light emitting electro-optical device from the knitted fabric layer so that a light projection of the at least one light emitting electro-optical device on the knitted fabric layer is enlarged.

Assignees

• Van Pieterson Liesbeth
• Asvadi Sima
• Philips Lighting Holding Bv

Inventors

• Van Pieterson Liesbeth
• Asvadi Sima

Classifications

• G09F21/02 Primary

  by a carrier person or animal · CPC title

• G09F9/335

  being organic light emitting diodes [OLED] · CPC title

• G09F9/33

  being semiconductor devices, e.g. diodes · CPC title

• G09F21/023 Primary

  fixed on clothing · CPC title

• G02B5/02

  Diffusing elements; Afocal elements · CPC title