Abstract:
A matrix addressable flat panel display includes a flat cathode operable for emitting electrons to an anode when an electric field is produced across the surface of the flat cathode by two electrodes placed on each side of the flat cathode. The flat cathode may consist of a cermet or amorphic diamond or some other combination of a conducting material and an insulating material such as a low effective work function material. The electric field produced causes electrons to hop on the surface of the cathode at the conducting-insulating interfaces. An electric field produced between the anode and the cathode causes these electrons to bombard a phosphor layer on the anode.
Abstract:
A method is provided for fabricating a display cathode which includes forming a conductive line adjacent a face of a substrate. A region of amorphic diamond is formed adjacent a selected portion of the conductive line.
Abstract:
Lateral luminescent field emitter devices for use in flat panel displays and a method of manufacturing are described. The device comprises a flat substrate, an anode disposed on the substrate, and a cathode disposed on the substrate, the cathode providing an electron emission surface capable of emitting electrons laterally across a gap to a major portion of an adjacent surface of the anode.
Abstract:
A system for use in an electronic cryptosystem for providing a sender with electronic proof of receipt by an intended recipient of an electronic artifact is disclosed. The process is initiated by the recipient's requesting an artifact from the sender, who then obtains the recipient's transmission key and separately encrypts the requested artifact and an acknowledgment such that they are decryptable with first and second strictly private keys, respectively, known to and controlled by the sender. Next, the sender encrypts the encrypted artifact and encrypted acknowledgment together using the transmission key such that the message is decryptable only with a third strictly private key known to and controlled by the recipient, and transmits the encrypted message to the recipient. The recipient decrypts the message to recover the encrypted artifact, as well as the encrypted acknowledgment which is returned to the sender. The sender decrypts the acknowledgment using the second strictly private key to verify receipt by the recipient of the encrypted artifact and then sends the first strictly private key to the recipient to enable decryption of the encrypted artifact. Additionally, at least one alternative embodiment is disclosed for enabling a sender to prove to third parties that the intended recipient in fact received the requested artifact.
Abstract:
A maskless process for forming a protected metal feature in a planar insulating layer of a substrate is disclosed. A first barrier material is disposed in a recess in an insulating layer, a conductive metal is disposed on the first barrier material such that the entire metal feature is positioned within the recess below the top of the recess, a second barrier material is disposed on the metal feature such that the second barrier material occupies the entire portion of the recess above the metal feature and extends above the top surface of the insulating layer, and the second barrier material is then polished until the top of the second barrier material is in and aligned with the top of the insulating layer. As a result, the metal feature is surrounded and protected by the first and second barrier materials, and the substrate is planarized.
Abstract:
The present invention discloses a thermally and electrically conductive adhesive material comprising a hardened adhesive, and a non-solidified filler containing a liquid metal dispersed in separate spaced regions of the adhesive. The hardened adhesive provides a mechanical bond whereas the filler provides continuous thermal and electrical metal bridges, each bridge extending through the adhesive and contacting the bonded surfaces. The method includes (a) dispersing a filler containing a liquid metal into an unhardened adhesive, (b) contacting the unhardened adhesive and the filler in non-solidified state to the surfaces resulting in separate spaced regions of the non-solidified filler contacting both surfaces, and (c) hardening the adhesive.
Abstract:
Apparatus for selecting memory cells in a MOS memory array and reading data contained therein. Superconducting Josephson junction devices switch between a superconducting and voltage gap mode for rapid selection of an addressed memory cell row and column, and then read out of the selected memory cell data contained therein.
Abstract:
A customizable interconnect circuit wherein a universal substrate of minimum layers is completely customized by programmable conductive links placed only on the top layer of the substrate. The customizable circuit having high density of orthogonally placed X- and Y-conductors capable of interconnecting closely spaced large-scale integrated circuits or discrete electrical components. By utilizing a plurality of interconnect cells regularly spaced throughout a universal, fixed substrate, interconnect routing from overlying electrical components or integrated circuits can be more directly routed to target areas.
Abstract:
Removing welded outer lead bonds of TAB tape leads to contacts on a substrate. The method includes separating the electrical leads adjacent the weld bonds leaving a remnant, engaging the remnant with a shear tool, and moving the tool and bond relative to each other shearing the remnant. In some cases the tool is ultrasonically vibrated in a direction transversely to the relative movement of the tool and bond.
Abstract:
A dielectric substrate is coated with a protective layer and a catalyst film is formed in a laser irradiated predetermined pattern on the protective layer so that during electroless deposition a metal is plated on the catalyst film in the predetermined pattern whether or not the dielectric has unwanted catalytic sites. The protective layer is not removed by the electroless plating bath or prior etch steps but can subsequently be stripped by a separate etch without removing the plated metal or the dielectric from the substrate.