PATENT COVER GRAPHIC

United States Patent 3,492,489
January 27, 1970

Gunn-Type Electroluminescent Device
Alan G. Chynoweth

Filed January 5, 1965
Image of US PATENT 3,492,489

Abstract of the Disclosure

Electroluminescent logic or display devices comprise a member of N-type III-V material which has a voltage threshold of luminescence. A matrix array of conducting strips on the material allows selective luminescence at the cross points to create a display.
Figure descriptions: cover graphic

  • Figure 1 is a view of one embodiment of the present invention.
  • Figure 2 is a graph demonstrating the emission characteristics of the crystal of the present invention. 

 Citations [54]:
  
2,877,376  03/1959  Orthuber
2,883,582  04/1959  Hanlet
2,892,968  06/1959  Kallman
3,223,886  12/1965  Glaser
National Museum of American History
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