Hitachi, Ltd.

Hitachi Global Storage Technologies Japan, Ltd.

Hitachi Global Storage Technologies Netherlands B.v.

Elpida Memory, Inc.

Hitachi-lg Data Storage, Inc.

Hitachi Media Electronics Co., Ltd.

Yasuo Amano

Yuji Fujita

Shigeo Nakamura

Toshiyuki Ajima

Takashi Yamaguchi

Nobuyuki Ushifusa

Asao Nakano

Osamu Narisawa

Kouki Uefune

Haruhiko Kikkawa

Hiroshi Yamaguchi

Mikio Tokuyama

Masahito Kobayashi

Naoki Matsushima

Masahiro Yamaguchi

Naoya Kanda

Takeshi Nakao

Tasao Soga

Shigeharu Tsunoda

Hiroshi Oyama

Hiroaki Furuichi

Tetsuya Nakatsuka

Kyohei Fukuda

Hanae Shimokawa

Kunio Matsumoto

Hiroyasu Sasaki

Suguru Sakaguchi

Toshiharu Ishida

Hiroshi Jitsukata

Koji Serizawa

Nobuhiro Konuma

Teppei Tanaka

Masaki Yoshii

Yuuji Fujita

Toyoki Asada

Atsushi Kazama

Masahiko Kamesawa

Koki Uefuna

Yoshio Oozeki

Yasuhiro Narikawa

Hitoshi Sugawara

Emi Sawayama

Yoshihide Yamaguchi

In a laser source module aligning laser beams from laser sources for three colors, red, green, and blue on a single combined beam optical axis, decreasing relative displacements of beam spots of three colors, occurring due to thermal deformation by temperature rise, is achieved by a laser source module including plural laser sources, each incorporating a laser having a laser chip installed on a heat sink and a lens converting a light radiated from the laser into a laser beam, and a beam combining unit aligning the laser beams from the laser sources on a single combined beam optical axis, wherein the lasers in at least two or more ones of the laser sources are arranged so that their laser beams will be decentered toward a same direction on the combined beam optical axis upon displacement of an emission point of the laser chip away from the heat sink.

Laser source module and scanning image display device equipped with such module

A fixing structure of an optical component is composed of a device chassis; a holder holding an optical component; first and second plate parts for joint to the device chassis and a connecting part of both the plate parts are formed in the holder; a plurality of joint holes are formed in the second plate part; a U-groove into which the connecting part of the holder is fitted and a plurality of through-holes are formed in the device chassis; and an adhesive that is extended in a circular columnar shape and is made by inserting the holder into the U-groove of the device chassis, and applying a UV-curing adhesive in such a manner that the UV-curing adhesive is bonded to the first plate part of the holder and is continuous to the inside of the joint hole via the inside of the through-hole, and radiating UV light along the through-hole.

Fixing structure of optical component, fixing method of optical component, optical pick-up device, and module device with light sources of RGB three primary colors

A semiconductor device includes a semiconductor chip, a first substrate, and a second substrate. The first substrate includes a plurality of wires and a plurality of first electrodes, each first electrode being connected with each wire. The second substrate includes the semiconductor chip that is mounted thereon, and a plurality of second electrodes with, each second electrode being connected with the each first electrode of the first substrate. The widths of the wires of the first substrate are different depending on the lengths of the wires. By changing the widths of the wires depending on their lengths, it is possible to reduce variation in stiffness of the electrodes and vicinities of electrodes, whereby variation in ultrasonic bonding strength can be reduced.

Semiconductor device including first substrate having plurality of wires and a plurality of first electrodes and a second substrate including a semiconductor chip being mounted thereon, and second electrodes connected with first electrodes of first substrate

A disk device has a small size, a small thickness, a high efficiency, a small degree of vibration and a small level of noise. In one embodiment, the disk device comprises a disk for storing information and a disk drive for driving the disk. The disk drive includes a rotor portion mounting an annular permanent magnet on the outer peripheral portion thereof, and a stator portion disposed on the outer side in the radial direction of the annular permanent magnet. The stator portion is constituted by a wiring board provided with a stator core formed by laminating magnetic metal plates in a radial manner and a coil that is so formed as to surround the stator core while electrically connecting wiring layers and through hole portions. The coil is so formed that among the envelopes connecting the outermost peripheral surfaces of the coil in the radial direction, the neighboring envelops and intersect at an inner position in the radial direction.

Compact disk device and disk drive

A magnetic disk apparatus includes a magnetic disk on which information is stored, a magnetic head which performs writing-in and reading-out of information, a suspension which supports the magnetic head, and a suspension supporting member having a &#x3c6;-shaped hinge. The suspension is supported at a tip end of the &#x3c6;-shaped hinge and an actuator for moving the magnetic head to a predetermined position on the magnetic disk is disposed so as to bridge an open portion of the &#x3c6;-shaped hinge. The actuator is coated with a resin material.

Magnetic disk apparatus and head-supporting mechanism for the same

A magnetic disk drive includes a base constituting at least a face included in an enclosure; a shaft secured to the base; a rotor which rotates around the shaft as a rotary axis; a stator for rotating the rotor; and a magnetic disk secured to the rotor; wherein the stator is disposed on a face facing the base. This improves durability of the magnetic disk drive.

Magnetic disk device having a low-profile motor without deterioration in the strength of the enclosure

A disk drive comprising a rotor, to which a disk and a plurality of magnets are fixed, and an open-slot type integrally molded stator disposed about an outer periphery of the magnets, and wherein the stator comprises coils formed by etching metallic films on teeth. The invention may also be applied to a closed-slot type stator. With either type, it is possible to produce an opening that is equal to or smaller than the thickness of a coil wire and cogging torque is minimized.

Disk drive motor and disk drive storage device incorporating same

An object of the invention is to inhibit a turning force of a magnetic disc apparatus from being reduced. In order to achieve the object, there is provided a magnetic disc apparatus having a rotor to which a magnetic disc fixed, and a stator which is filled with a resin between stator coils, wherein a member having a lower expansion coefficient than a thermal expansion coefficient of the resin is arranged between the stator coils.

Magnetic disc apparatus having stator structure with reduced distortion

Provided is a magnetic disc apparatus comprising a magnetic head for writing and reading data to and from a magnetic disc, a slider for floating up the magnetic head from the magnetic disc on rotation, a suspension having an IC chip mounting surface, for supporting the slider, a positioning mechanism for positioning a magnetic head at a predetermined position, and an IC chip mounted on the IC chip supporting surface of the suspension, wherein the rate of variation in temperature difference between opposite sides of the IC chip mounting position as a center on the IC chip mounting surface is set to be below about 3.5 K/sec. Thereby it is possible to restrain the averaged seek time for the magnetic disc from becoming longer.

Magnetic disk apparatus

An actuator of a magnetic disk has a laminated construction of piezoelectric flat sheet in which there are two polarized regions separated by a non-polarized region and the polarization direction and the direction of applied magnetic fields are the same as the thickness direction of the piezoelectric flat sheet. The actuator is fixed in such a manner as to bridge the top surfaces of the suspension and suspension-supporting member of the magnetic disk, and is coated with a resin material. The actuator enables vertical vibrations and dust generation which occur in association with the movement of the supporting member to be reduced and the accuracy of head positioning to be improved.

Electronic components are bonded to an electronic circuit board with a lead-free solder. The bonded structure is cooled from a temperature close to the liquids temperature of the solder to a temperature close to the solids temperature of the solder at a first cooling rate of about 10 to 20&deg; C./second, followed by cooling the bonded structure to a temperature lower than the solids temperature of the solder at a second cooling rate of about 0.1 to less than 5&deg; C./second.

Method and apparatus of manufacturing an electronic circuit board

A stable low-connecting resistance connection arrangement having a high yield rate without using any special material or process for a substrate. A flip-chip connecting structure in which the semiconductor integrated circuit (IC) chip is mounted directly on an organic circuit substrate. To achieve reliable connection and low-connecting resistance, the present invention absorbs variation of the heights of projecting electrodes formed on a semiconductor IC chip and substrate electrodes of an organic circuit substrate for example, by deforming the substrate electrodes and/or substrate layer of the organic circuit substrate. Resin of a conductive paste disposed between the projecting electrodes and substrate electrodes is squeezed out leaving a high density conductive particle layer to lower a contact resistance between such electrodes.

Flip-chip connecting method, flip-chip connected structure and

A projection-type stereoscopic image display system is disclosed in which a left-eye projection light ray and a right-eye projection light ray are projected from behind a transparent screen thereby to display a stereoscopic image.

Projection type stereoscopic image display system

Growing community of inventors

Yokohama, Japan

Yasuo Amano