Electro-optical elements utilizing an organic nematic compound

• US 3,322,485 A
• Filed: 11/09/1962
• Issued: 05/30/1967
• Est. Priority Date: 11/09/1962
• Status: Expired due to Term

• Current Assignee: Richard Williams
• Original Assignee: Richard Williams
• Inventors: RICHARD WILLIAMS
• Application Number:
  US04/236,546
• Time in Patent Office: 1,663 Days
• US Class Current: 349/143
• CPC Class Codes: C09K 19/02 characterised by optical, electrical or physical properties of the components, in general
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement

Claims

1. AN ELECTRO-OPTICAL DEVICE COMPRISING TWO SPACED PLATES, THE FIRST SAID PLATE BEING TRANSPARENT, THE SECOND SAID PLATE BEING REFLECTING;

AT LEAST ONE TRANSPARENT ELECTRICALLY CONDUCTIVE FILM ON ONE FACE OF SAID FIRST PLATE;

AT LEAST ONE ELECTRICALLY CONDUCTIVE FILM ON ONE FACE OF SAID SECOND PLATE;

SAID TWO PLATES BEING SPACED WITH SAID FACES BEARING SAID CONDUCTIVE FILMS ADJACENT AND PARALLEL AND LESS THAN 500 MICRONS APART;

ELECTRICALLY CONDUCTIVE LEADS ATTACHED TO SAID CONDUCTIVE FILMS ON SAID FIRST AND SECOND PLATES;

AN ORGANIC NEMATIC MESOMORPHIC COMPOUND FILLING THE SPACE BETWEEN SAID TWO PLATES, SAID COMPOUND HAVING A THRESHOLD ELECTRIC FIELD WHICH WHEN EXCEEDED CAUSES SAID COMPOUND TO SCATTER LIGHT;