Encapsulated pixels for display device

• US 8,319,925 B2
• Filed: 01/05/2011
• Issued: 11/27/2012
• Est. Priority Date: 07/08/2008
• Status: Active Grant

• Current Assignee: Powermat Technologies, Ltd.
• Original Assignee: Powermat Technologies, Ltd.
• Inventors: Ben-Shalom, Amir
• Primary Examiner(s): Kim, Richard
• Application Number:
  US12/984,884
• Publication Number:
  US 20110157137A1
• Time in Patent Office: 692 Days
• Field of Search: None
• US Class Current: 349/122
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity
• CPC Class Codes: G02F 1/1334 based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: Y10T 29/49007 Indicating transducer

Abstract

A display device comprising an array of encapsulated pixels. The encapsulating pixel includes an optical element which is altered from a first optical state to a second optical state upon when a potential difference is generated across it. The optical element is in contact with two electrodes which are connected to a pixel driver for generating the potential difference. The encapsulated pixel is hermetically sealed from the environment by a sealing layer and the driver receives power wirelessly via an inductive power transmission system.

Claims

1. A method for producing at least one encapsulated pixel for a display device, said method comprising

providing a first substrate comprising a first transparent conductor;

fabricating a first electrode from said first transparent conductor;

fabricating a first inductor on said first transparent conductor;

providing a second substrate comprising a second transparent conductor;

fabricating a second electrode from said second transparent conductor;

stacking said first substrate together with said second substrate;

introducing an active optical material between said first substrate and said second substrate to form a pixel; and

encapsulating said pixel within a sealing layer.

2. The method of claim 1 further including a step of fabricating a second inductor onto said second transparent conductor.

3. The method of claim 1 wherein at least one electrode is a strip electrode.

4. The method of claim 1 wherein the steps of fabricating said electrodes comprise at least one of printing onto said conductors or etching said conductors.

5. The method of claim 1 wherein the steps of fabricating said inductors comprise at least one of printing onto said conductors or etching said conductors.

6. The method of claim 5 wherein the steps of fabricating said electrodes comprise at least one of printing onto said conductors or etching said conductors.

7. The method of claim 6 wherein the steps of fabricating said inductors comprise at least one of printing onto said conductors or etching said conductors.