×

Thin film electroluminescent element easily regulating emitted light to white

  • US 5,717,289 A
  • Filed: 01/29/1997
  • Issued: 02/10/1998
  • Est. Priority Date: 01/30/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A thin film electroluminescent element fabricated on a substrate comprising:

  • an anode applied with an electric potential;

    a cathode negatively biased with respect to said anode;

    a photoluminescent medium provided between said anode and said cathode, and having a luminescent layer causing holes injected from said anode to be recombined with electrons injected from said cathode for emitting a first light in a first color through one of said anode and said cathode; and

    a color changing medium formed over a surface of said one of said anode and said cathode, and containing a first photo-converting material for converting a part of said first light to a second light in a second color and a second photo-converting material for converting a part of said second light to a third light in a third color, thereby radiating a remaining part of said first light, a remaining part of said second light and said third light.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×