Abstract:
A substrate (30) for attaching electrical devices (42) having an interconnect wiring structure (34) and a support (32) for the interconnect, the support having a number of vias (38), or throughholes, extending therethrough and electrically connected to the interconnect. The substrate allows for attachment of the electrical devices on the side of the support opposite the interconnect at the vias, rather than on the interconnect itself. By so doing, the chips can be packed more densely since the area between the chips normally reserved for engineering change pads, test pads and the like is not required, these functions being performed on the interconnect on the opposite side of the substrate.
Abstract:
A customizable circuit using a programmable interconnect and a compatible tape design for tape automated bonding of chips to the circuitry. The programmable interconnect comprises layers of wires, with one layer of wires forming overlap regions with the adjacent layer of wires. The wires can be selectively linked later to form the desired interconnect. The selective linkage represents the customization of an otherwise undedicated interconnect. The TAB chip bonding design uses a carrier tape to bond the integrated circuit chips to the programmable interconnect. Also disclosed is a method for forming the interconnect.
Abstract:
A method and apparatus of bonding two electrical members together uses a pulsed YAG laser. Various apparatus and methods may be used to hold the electrical members in contact under pressure to insure uniform bonding. Automation production equipment provides for the automatic bonding of the flat electrical leads of a TAB tape to the flat electrical bumps on a plurality of integrated circuit dies.
Abstract:
A thin film capacitor having a top, middle and bottom plate forming two capacitors in series in which the middle plate is a plurality of isolated plates thereby forming a structure of a plurality of two capacitors in series which are all connected in parallel. The capacitor may be integrated into an electronic substrate. The capacitor may be formed by depositing films of the metal conductors and dielectrics and may be formed as an integral part of a semiconductor chip or interconnect substrate.
Abstract:
Applying a photoresist layer containing a solvent to the top of an electronic wafer by spin coating. Before the layer dries the wafer is heated in an oven while controlling the solvent loss from the coating by maintaining the pressure of the solvent vapor and providing a slow solvent loss for planarizing the top surface of the polymer. The device is removed from the first oven and the bake cycle is completed in a standard convection bake oven.
Abstract:
A method and apparatus for making a flexible interconnect for connection between stacks of electronic components. The method includes forming a plurality of holes through a flexible insulating material, depositing electrically conductive metal studs into the holes extending out of at least one side and preferably both sides of the flexible material, and electrically interconnecting some of the electrically conductive metal studs by interconnects supported by the flexible material. The interconnects may be supported from the outside of the flexible material or embedded therein. Dummy studs may be provided in the flexible material extending to the outside and aligned with studs extending on the other side of the insulating material which are connected to the electrical interconnects.
Abstract:
A high performance fluid heat exchanger (10) for cooling an electronic component (16) which includes housing (12) having a base (14), a plurality of parallel fins (22) in the housing (12), and a center fed inlet (30) connected to the housing (12) opposite the base (14) for supplying cooling fluid towards the base (14) and toward the ends of the fins (28). A plate (36) is positioned between the tops (24) and bottom (26) of the fins (22) and extends generally parallel to the base (14) and extends towards, but is spaced from, the ends of the fins (28) for providing a double cooling pass against the fins.
Abstract:
A body (12) having a bottom (14) and first (16) and second (18) ends and a cavity (26) therein. A plurality of substantially parallel spaced fins (30a-30h) are positioned in the cavity. A liquid inlet (32) is centrally positioned in the first end of the body and a liquid outlet (34) is centrally positioned in the second end of the body where flowing cooling liquid between the fins from the first end to the second end with higher fluid flow between the fins in the center for preferentially cooling the center of the heat exchanger. A cross-sectional area of the liquid path in the body minimize pressure drops and avoids abrupt direction changes and cross-sectional changes. The width, height and spacing of the fins may be varied to control the temperature of the areas in the bottom.
Abstract:
Un réseau de cristallites photoréfractives (10) permet l'enregistrement d'images et le traitement de signaux. Les cristallites photoréfractives (11) sont configurées comme un réseau bidimensionnel (10) de position et d'espacement sélectionnés, conçu par exemple, pour coïncider avec les composantes de fréquence spaciales d'une image optique associée, telle qu'une image de transformation de Fourier, et pour permettre le traitement de signaux optiques.
Abstract:
A method of fabricating an anodic aluminum support system having an air bridge for metallic conductors. The method includes providing two or more metal layers separated by a coating of aluminum creating a multiple layer electrical interconnect system. The method includes the step of anodizing the aluminum and applying a photoresist mask to spaced portions of the top of the system. Thereafter, an etching solution is applied to the top of the system for removing the anodized aluminum, except for the portions covered by the mask, thereby providing a multilayer conductor system supported by pillars of anodic aluminum surrounded by low dielectric air.