Integrated photosensitive film and thin LED display

Patent metadata

Field	Value
Publication number	US-9728668-B2
Application number	US-201414172352-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Feb 4, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A system to configure a conductive pathway and a method of forming a system of configurable conductivity pathways are described. The system includes a photosensitive layer that becomes conductive based on photoexcitation, and a light source layer deposited over the photosensitive layer, the light source layer selectively providing the photoexcitation to the photosensitive layer. The system further includes a controller to control the light source layer, the controller illuminating a portion of the light source layer corresponding with a user input image to photoexcite the photosentive layer and configure the conductive pathway in the photosensitive layer according to the image.

First claim

What is claimed is:

1. A method of forming a system of configurable conductivity pathways, the method comprising:
disposing a photosensitive layer on a mechanical support;
disposing a light source layer on the photosensitive layer; and
configuring a controller to control two or more light emitting diodes (LEDs) of the light source layer to illuminate portions of the photosensitive layer corresponding with an image to configure a photoconductive pathway along a plane of the photosensitive layer corresponding with the portions, the photoconductive pathway being configured only during illumination by the light source layer.

2. The method according to claim 1 , further comprising coupling a graphical user interface to the controller, the graphical user interface configured to facilitate input of the image.

3. The method according to claim 1 , wherein the disposing the photosensitive layer includes disposing optical switching elements that conduct when photoexcited.

4. The method according to claim 3 , wherein the configuring the controller includes configuring the controller to illuminate a portion of the light source layer matching a portion of the optical switching elements corresponding with the image.

5. The method according to claim 1 , wherein the disposing the light source layer includes disposing a light source to controllably emit ultraviolet light or visible light.

6. The method according to claim 1 , further comprising disposing a second photosensitive layer on the light source layer.

7. The method according to claim 6 , further comprising depositing a second light source layer over the second photosensitive layer.

8. The method according to claim 7 , further comprising configuring a second controller to control the second light source layer to configure conductive pathways in the second photosensitive layer.

9. The method according to claim 8 , wherein the second controller and the controller are a same controller.

10. The method according to claim 1 , wherein the disposing the photosensitive layer includes disposing a photoconductive element and a conductive element in electrical contact with one another within an immobilizing material.

11. The method according to claim 1 , wherein the disposing the light source layer includes depositing a layer of light emitting diodes (LEDs), a bulk semiconductor layer, a layer of quantum dots, or a layer of organic LEDs (OLEDs).

Assignees

• Raytheon Co

Inventors

• Robson Michael H
• Pace Michael T

Classifications

• Y02B20/346

  Cross-Sectional Technologies · mapped topic

• H05K2201/0112

  Absorbing light, e.g. dielectric layer with carbon filler for laser processing · CPC title

• H05K2201/10106

  Light emitting diode [LED] · CPC title

• H01L31/18 Primary

  Electricity · mapped topic

• H05K2201/0209

  Inorganic, non-metallic particles · CPC title