Patents by Inventor Norman Edwin Schumaker

Norman Edwin Schumaker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 3964157
    Abstract: Disclosed is a bonding and packaging scheme for semiconductor device chips with particular application to semiconductor monolithic display chips. The display chip is bonded face down in a recess formed in a transparent substrate. In one embodiment, the metallization on the chip is aligned and made coplanar with the auxiliary metallization on the substrate, and the gap between the metallizations is bridged by a conductive material. This can be accomplished, for example, by solder reflow or epoxy bonding techniques. In an alternative embodiment, the metallization is formed after the chip is bonded to the substrate utilizing a coating which fills the gap between the chip and the substrate. The substrate may be dyed to act as a contrast filter, and a magnifying lens may be molded thereon in further processing.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: June 22, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Matthew Kuhn, Norman Edwin Schumaker
  • Patent number: 3950195
    Abstract: Described is a liquid phase epitaxy technique using conventional slider apparatus in which, after heating the source solution to saturation, the solution temperature is rapidly reduced so that supersaturation takes place but heterogeneous nucleation does not. The solution is allowed to reach convective equilibrium and only then is brought into contact with the substrate. Once in contact, the temperature is maintained constant so that convection currents in the solution are substantially reduced. This technique has several advantages: reduced edge growth, increased usable wafer area, and reduced wipe-off problems.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: April 13, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Daniel Leon Rode, Norman Edwin Schumaker