Samsung Electro-mechanics Co., Ltd.

Kun Kim

Hyung Kyu Kim

Ha Yong Jung

Myung Hwa Choi

Wang Hyun Kwon

There are provided a sealing composition for a hard disk drive (HDD) motor and a HDD motor fabricated using the same. The sealing composition includes: 45 to 65 parts by weight of urethane methacrylate; 35 to 50 parts by weight of methacrylate; and 2 to 4 parts by weight of acrylic acid. A sealing composition having a new composition is used as a sealing material of a flexible printed circuit (FPC) adhering part of the HDD motor, whereby a haze phenomenon due to air leak and outgas at the FPC adhering part may be improved and reliability of a HDD motor may be enhanced due to a reduction in generation of the outgas of the adhering part.

Sealing composition for HDD motor and HDD motor fabricated using the same

Disclosed is a lubricating oil composition which includes a diester-based base oil having an asymmetric structure in which the number of carbons of the alkyl chain bound to one ester group with respect to a central atom is two more than that of the alkyl group bound to the other ester group, and which has low viscosity and a comparatively small amount of evaporation at high temperature. When this composition is used for a motor of a small hard disk, power consumption can be reduced and stability at high temperature can be enhanced.

Lubricating oil composition

An image sensor module comprises an image sensor including a pixel region picking up an image from light incident from the outside and a signal processing region having bumps formed in the outer portion of the image sensor so as to process an electrical signal with respect to the image picked up by the pixel region; and a board attached to the image sensor by a liquid adhesive and provided with a window such that the pixel region of the image sensor receives light, the board including: a first dummy pattern formed on at least a portion around the window; a circuit pattern formed in a position spaced in a predetermined distance outward from the first dummy pattern; and board-side pads electrically connected to the circuit pattern so as to come in contact with the bumps formed in the image sensor.

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Gyunggi-do, South Korea

Kun Kim