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Touch-sensitive optoelectonic circuits and indicators

  • US 3,207,905 A
  • Filed: 08/17/1961
  • Issued: 09/21/1965
  • Est. Priority Date: 08/17/1961
  • Status: Expired due to Term
First Claim
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1. AN OPTOELECTRONIC CIRCUIT CONSTRUCTION COMPRISING:

  • (A) AN ELECTROLUMINESCENT ELMENT INCLUDING (B) A FIRST LAYER OF NONCONDUCTING MATERIAL, AND (C) A SANDWICHED ARRANGEMENT OF AN ELECTROLUMINESCNT PHOSPHOR LAYR DISPOSED BETWEEN AND IN ELECTRICAL CONTACT WITH A PAIR OF CONDUCTIVE PLANE ELECTRODES, SAID SANDWICHED ARRANGEMENT OVERLAYING SAID FIRST LAYER, (D) A TOUCH SENSITIVE SWITCHING ELEMENT ADAPTED TO BE ELECTRICALLY COUPLED TO SAID ELECTROLUMINSCENT ELEMENT, INCLUDING (E) A SECOND LAYER OF NONCONDUCTING MATERIAL, AND (F) A PLURALITY OF SPACED APART CONDUCTIVE STRIPS OVERLAYING SAID SECOND LAYER, SAID CONDUCTIVE STRIPS ARRANGED TO BE BRIDGED BY A DIGIT SURFACE SO AS TO SELECTIVELY PROVIDE A CONDUCTIVE PATH BETWEEN SAID STRIPS, SAID TOUCH SENSITIVE SWITCHING ELEMENT BEING SUPERIMPOSED ON AND FORMING AN INTEGRAL UNIT WITH SAID ELECTROLUMINESCENT ELEMENT.

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