Electroluminescent cell

• US 3,173,050 A
• Filed: 09/19/1962
• Issued: 03/09/1965
• Est. Priority Date: 09/19/1962
• Status: Expired due to Term

• Current Assignee: Edward F. Gurnee
• Original Assignee: Edward F. Gurnee
• Inventors: Gurnee, Edward F.
• Application Number:
  US04/224,655
• Time in Patent Office: 902 Days
• US Class Current: 313/504
• CPC Class Codes: H05B 33/12 Light sources with substantially two-dimensional radiating surfaces
• CPC Class Codes: H05B 33/145 Arrangements of the electroluminescent material
• CPC Class Codes: H05B 33/20 characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
• CPC Class Codes: H05B 33/22 characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers

Claims

1. AN ELECTROLUMINESCENT CELL COMPRISING A CONDUCTIVE FIRST ELECTRODE, AN ORGANIC PHOSPHOR MIXTURE DEPOSITED ON THE ELECTRODE IN A LAYER HAVING A THICKNESS OF FROM ABOUT 0.3 MICRON TO ABOUT 10 MICRONS, AN IMPEDANCE LAYER IN CONTACT WITH THE PHOSPHORE LAYER, THE IMPEDANCE LAYER BEING IN CONTACT WITH A SECOND ELECTRODE, WHEREIN THE ORGANIC PHOSPHOR COMPRISES (1) A CONJUGATED ORGANIC COMPOUND AS A HOST MEMEBER, (2) A CONJUGATED ORGANIC COMPOUND OF CONDENSED BENZENE RINGS AS DONING AGENT, AND (3) A FINELY DIVIDED ELECTRICAL CONDUCTIVE MATERIAL.