Abstract: A sealing structure for minimizing the leakage of bearing lubricant is described. The sealing structure includes at least one labyrinth seal which is formed between a sealing surface on one component of a spindle motor and a restrictive ring formed on an opposing component of the spindle motor such that the ring projects into close proximity to the sealing surface. One of the components is a rotating component of the spindle motor and the other component is a stationary component of the spindle motor. At least one labyrinth seal includes a splash ring and a relief groove for collecting the lubricant particles that escape from a bearing assembly in the spindle motor.

Abstract: The present invention is a method for optical data storage which enhances the contrast between ON and OFF pixels. The method comprises writing a two-dimensional image comprising a plurality of pixels into a recording medium with the exposure of individual ON pixels during the recording of the image. The ON pixels are then switched off and OFF pixels are switched on, and the phase of either the object beam or reference beam is changed. The process results in subtraction of residual signal from the OFF pixels.

Abstract: A dual element electrical lapping guide system is disclosed for a row of multi-layer dual element magnetoresistive and inductive magnetic transducers formed on a substrate, which will be used to form sliders, the sliders being separated by separation kerfs, and the multi-layer transducers aligned along an edge of the substrate for lapping of the edge. The dual element lapping guide system comprises superposed resistive elements and electrical switch elements, each positioned in one of the separation kerfs, and having an edge thereof positioned so as to be aligned with the edge of the row and subject to lapping of the row. Each electrical switch element comprises a bottom and a top layer connected at one end thereof and separated at the other end thereof by an insulation layer, so as to be initially closed at the connected end, which end is aligned with the edge of the multi-layer transducers and subject to lapping of the row at the connected end to open the switch element.

Abstract: The present invention is a method for optical data storage which compensates for deterministic variations. The method comprises writing a two-dimensional image comprising a plurality of pixels into a recording medium while varying the exposure of individual ON pixels during the recording of the image to expose the weaker pixels more than brighter pixels.

Abstract: The invention is an encapsulated circuit assembly including a chip; a substrate; at least one solder joint, wherein the solder joint spans between the chip and the substrate forming an electrically conductive connection between the chip and the substrate; and an encapsulant formed adjacent the solder joint, wherein the encapsulant comprises a hyperbranched polymer formed by the reaction of a monomer of the formula: (A).sub.n RB, wherein A is a coupling group reactive with B, B is a coupling group reactive with A, n is greater than 1, and R is a group selected from the group consisting of an aromatic group, an aliphatic group, and mixtures thereof.

Abstract: The invention relates to an organic electroluminescent device comprising a light-emitting composition disposed between a first and second electrode. The composition comprises poly(fluorene-co-anthracene).

Abstract: The invention relates to a process for forming bilayer resist images with a chemically-amplified, radiation-sensitive bilayer resist. The bilayer resist is disposed on a substrate and comprises (i) a top imaging layer comprising a radiation-sensitive acid generator and a vinyl polymer having an acid-cleavable silylethoxy group and (ii) an organic underlayer. The bilayer resist is used in the manufacture of integrated circuits.

Abstract: A manufacturing test method and apparatus for testing devices, preferably magnetic disk drives, assembled or processed at ones of a plurality of stations in a variegated process stream from components originating from a plurality of sources of components, to determine failure statistics for selected ones of the plurality of stations or ones of the sources of components.

Abstract: A method and system is disclosed for lapping row edges of a substrate work piece with a flat lapping element. The substrate work piece comprises a section of wafer having parallel aligned multiple row edges to be individually lapped. The wafer has different bow characteristics imparted to different substrate work piece. The bow characteristic of the substrate work piece to be lapped is determined, load points are selected on the work piece which will counteract the bow characteristic, and a pusher with push pads located at the selected load points pushes the work piece at those load points so that the pushing flexes the substrate work piece to counteract the bow characteristic to lap the row edge.

Abstract: The invention relates to an integrated circuit device comprising (i) a substrate; (ii) metallic circuit lines positioned on the substrate and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises the reaction product of an organic polysilica and polyamic ester preferably terminated with an alkoxysilyl alkyl group.

Abstract: Disclosed is a strain relief clamp for supporting one or more flexible ribbon cables. A first stiff member has an indentation wider than a flexible ribbon cable, and a height less than the thickness of a flexible ribbon cable. Stacked pliant members are stacked on the first stiff member. Each pliant member has an indentation on the side facing away from the first stiff member. The indentations are substantially equal in width and height to the indentation of the first stiff member. A second stiff member is located on the end of the stack opposite the first stiff member and has a protrusion at least as wide as a flexible ribbon cable facing the indentation of the adjacent pliant member. The protrusion height is such that the sum of its height and the thicknesses of the flexible ribbon cables is greater than the sum of the heights of the indentations of the first stiff member and of the stacked pliant members.

Abstract: The present invention relates to an improved chemically amplified photoresist composition comprising (i) a photosensitive acid generator and (ii) a polymer comprising the reaction product of hydroxystyrene with a monomer selected from acrylate or methacrylate having an alicyclic ester substituent.

Abstract: The invention relates to an encapsulated organic light emitting device having an improved protective covering comprising a first layer of passivating metal, a second layer of an inorganic dielectric material and a third layer of polymer.

Abstract: The invention relates to a process for making an integrated circuit device comprising (I) a substrate, (ii) metallic circuit lines positioned on the substrate, and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises the condensation product of silsesquioxane precursor in the presence of an organic amine having a boiling point greater than 150.degree. C.

Abstract: A magnetic recording data storage device includes a magnetic recording disk, a spindle motor, a head supported on an air bearing carrier and an actuator connected to the head carrier for moving the head across the rotating disk. The spindle motor has lubricant covered ball bearings where the lubricant includes an alkali hydroxystearate, an ester oil, a dialkyldiphenylamine and a dialkyldithiocarbamate.

Abstract: An improved process for making thin film magnetic heads using an insulation comprising a polymer, a crosslinking agent, and 4-sulfonate diazonaphthoquinone.

Abstract: A method for preparing the air bearing surface of a slider for etch patterning including the steps of applying a first thin film to a carrier, applying a second thin film to the carrier, the first thin film and the second thin film separated by a recess, each of the first and second thin films having respective first and second air bearing surfaces, applying an adhesive film over the first and second thin films, depositing a fluid in the recess, the fluid held in the recess by the adhesive film, curing the fluid, and removing the adhesive film. The method of the invention may also include coating the first and second air bearing surfaces with an etch mask, developing the etch mask, and patterning the first and second air bearing surfaces.

Abstract: Stabilized pigment particles for use in electrophoretic display. Stabilization of the pigment particles is effected by covalently bonding the pigment to a polymeric stabilizer.

Abstract: The invention relates to a printed circuit board having chips attached to the PCB. One or more of the chips has a planar collar mounted around the chip. The collar has a top and bottom planar surface without any projections. The collar extends laterally away from the edge of the chip to protect the leads electrically connecting the chip to the circuit board.

Abstract: A disk drive assembly in which the suspension, slider and transducer are integrated and fabricated to produce a combination assembly. The combination transducer-slider-suspension assembly is batch produced by forming a plurality of the combination assemblies onto a single wafer. The wafer is then diced to separate the assemblies into individual sections. The transducers are deposited onto the wafer and the air bearing surface formed. Conductors to interconnect each transducer with the external circuits are insulated from the wafer and deposited along a path which will form the suspension. A spring-like resilient layer is then deposited over and electrically insulated from the conductors. The wafer is then pattern etched to remove a portion of the wafer backside to form the suspension and provide a transducer/slider combination having an air bearing surface after the wafer is diced to separate the individual combination assemblies.