FUSION METHOD FOR SPACED CONDUCTIVE ELEMENT WINDOW

• US 3,650,718 A
• Filed: 11/14/1969
• Issued: 03/21/1972
• Est. Priority Date: 11/14/1969
• Status: Expired due to Term

• Current Assignee: Jon W. Ogland
• Original Assignee: Jon W. Ogland
• Inventors: Ogland, Jon W.
• Primary Examiner(s): Miga, Frank W.
• Application Number:
  US04/876,767
• Time in Patent Office: 858 Days
• Field of Search: 65/31,DIG.7,59,60,61,23,37,42,155
• US Class Current: 65/23
• CPC Class Codes: H01J 31/065 for electrography or electrophotography, for transferring a charge pattern through the faceplate leading-in arrangements H01J29/90; Lenard tubes H01J33/00; electrography or electrophotography per se G03C

Abstract

A display device in which a cathode ray tube envelope is utilized with a plurality of conductive elements extending from the interior surface of the faceplate of the cathode ray to the exterior surface of the cathode ray tube. A high resolution faceplate is provided by fabricating the faceplate in a manner such that the conductive elements are formed on a surface transverse to the inner and outer surfaces of the faceplate and this transverse surface is then formed into the faceplate to provide a vacuum type window.

Claims

2. The method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of forming a tape of insulating material having a conductive coating on at least one side of said tape, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending between the edges of said tape on one surface of said tape, winding said tape in a roll and then treating said roll to provide a vacuum tight window in which said edges of said tape provide the inner and outer surface of said window and said conductive elements extend between said inner and outer surfaces of said window.

3. The method set forth in claim 2 in which said conductive elements are provided on said tape by providing a conductive coating of material on at least One surface of said tape and coating said conductive coating with a photoresist material, exposing said conductive coating to radiations of a predetermined pattern and then removing selected portions of said photoresist material, etching away the exposed conductive coating and then removing the photoresist coating from the remaining conductive elements.

4. The method of manufacturing a high density electrical feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of separating said window into a first and second portion, said first portion having a transverse surface, providing a conductive coating on said transverse surface extending between the inner and outer surface of said window portion, removing selected portions of said conductive coating to provide said plurality of spaced conductive elements and sealing said first portion to said second portion of said window at said transverse surface to provide a vacuum tight window.

5. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by scribing away a portion of said transverse surface and providing a conductive coating over said transverse surface and then removing the conductive coating from the transverse surface other than the scribed portion thereof.

6. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by providing a conductive coating on said transverse surface and then scribing away portions of said conductive coating to provide said plurality of spaced conductive elements extending between said inner and outer surface of said window.