Method for manufacturing electroluminescent lamp systems

• US 5,720,639 A
• Filed: 06/07/1995
• Issued: 02/24/1998
• Est. Priority Date: 06/07/1995
• Status: Expired due to Fees

• Current Assignee: Novatech Electro-Luminescent Incorporated
• Original Assignee: American International Pacific Industries Corporation
• Inventors: Stevenson, William Charles
• Primary Examiner(s): Bradley, P. Austin
• Assistant Examiner(s): Knapp, Jeffrey T.
• Application Number:
  US08/482,302
• Time in Patent Office: 993 Days
• Field of Search: 445/24, 445/58, 427/66
• US Class Current: 445/24
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources

Abstract

A method of manufacturing EL lamp systems is available which incorporates some of the processes used in manufacturing flexible, printed circuit boards with surface mounted components along with those used to form multilayered EL lamps. The EL lamp system produced by this method is suitable for a variety of graphics and low-cost consumer applications.

Claims

1. A method for manufacturing an electroluminescent (EL) lamp system comprised of multiple electroluminescent lamps, said method comprising the steps of:

bonding a continuous conductive foil to the surface of one side of a continuous length non-conductive carrier;

removing sections of the foil from the surface of said carrier resulting in a plurality of capacitive electrodes;

applying a layer of electroluminescent phosphor ink to said capacitative electrodes, said electroluminescent phosphor ink for precisely defining at least one area of illumination;

applying a layer of Indium Tin Oxide to said layer of electroluminescent phosphor ink;

applying an insulating layer to at least said layer of electroluminescent phosphor ink;

attaching electrical terminations to said capacitive electrodes and said layer of conductive Indium Tin Oxide; and

mounting at least one electrical component on said carrier for enabling illumination of said at least one area of illumination, wherein said at least one electrical component is electrically connected to said electrical terminations.

2. The method of claim 1, further comprising the application of a dielectric material to said plurality of capacitive electrodes prior to said application of electroluminescent phosphor ink.

3. The method of claim 1, wherein an insulating layer is applied to said layer of Indium Tin Oxide ink.

4. The method of claim 1, wherein an electrically insulating conformal coating is applied for water proofing said El Lamp System.

5. The method of claim 1, wherein said EL Lamp System is die cut from said continuous length carrier.

6. The method of claim 1, wherein said at least one electrical component is mountably connected to illuminate said areas of illumination.

7. The method of claim 1, wherein said layer of Indium Tin Oxide is applied either as an ink or as a film.

8. A method for manufacturing an electroluminescent lamp system, said method comprising the steps of:

forming a plurality of rear conductive capacitive electrodes on a continuous length carrier;

forming a plurality of conductive electrical contacts;

applying a layer of electroluminescent phosphor ink to said capacitive electrodes;

said electroluminescent phosphor ink precisely defining areas of illumination;

applying a layer of conductive Indium Tin Oxide ink to said layer of electroluminescent phosphor ink;

applying an insulating coating to said surface of said conductive Indium Tin Oxide ink; and

mountably connecting electrical components for illuminating said areas of illumination, wherein said electrical components are electrically connected to said plurality of electrical contacts and to said plurality of conductive capacitative electrodes.