Circuit device and portable device with symmetrical arrangement

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Housing or package filled with solid or liquid electrically...

Reexamination Certificate

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Details

C257S678000, C257S730000, C257S773000, C257S787000, C257S676000, C257S737000, C257S778000, C257S666000, C257S795000, C257SE23001, C257SE23194, C438S124000, C438S127000, C438S106000, C438S064000, C438S055000

Reexamination Certificate

active

07417309

ABSTRACT:
To provide a circuit device freed from constrains of a mounting direction. The circuit device according to the present invention includes: a conductive pattern for forming a die pad, a first bonding pad, and a second bonding pad; and a semiconductor element (TR) attached to the conductive pattern. The circuit device further includes: a sealing resin for covering the semiconductor element (TR) and the conductive pattern with a rear surface of the conductive pattern being exposed; and a coating resin for covering the rear surface of the conductive pattern exposed from the sealing resin. The rear surface of the conductive pattern is exposed from openings of the coating resin, and the openings are arranged with rotational symmetry about a central point of the circuit device.

REFERENCES:
patent: 5739588 (1998-04-01), Ishida et al.
patent: 6624511 (2003-09-01), Sakamoto et al.
patent: 6841852 (2005-01-01), Luo et al.
patent: 2002/0030268 (2002-03-01), Sakamoto et al.
patent: 2004/0104043 (2004-06-01), Sakai et al.
patent: 2005/0104198 (2005-05-01), Takahashi
patent: 2005/0214981 (2005-09-01), Sakano et al.
patent: 1132003 (1996-09-01), None
patent: 1239588 (1999-12-01), None
patent: 11-274361 (1999-10-01), None
patent: WO 98/25301 (1998-06-01), None

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