ELECTRONIC DEVICE - HITACHI CHEMICAL CO LTD

Title:

ELECTRONIC DEVICE

Document Type and Number:

WIPO Patent Application WO/2005/076202

Kind Code:

A1

Abstract:

Disclosed is an electronic device comprising an IC element (10), a first circuit layer (20) on the surface of which is formed an antenna circuit (21) composed of a conductive layer, and a second circuit layer (30) on the surface of which is formed a conductive layer (31). The IC element (10) comprises a base substrate (11) composed of silicon, a semiconductor circuit layer (12) formed on one side of the base substrate (11) in which layer a semiconductor circuit is formed, and an electrode (13) formed on the semiconductor circuit layer (12). The first circuit layer (20) is electrically connected to either the other side of the base substrate (11) or the electrode (13), and the second circuit layer (30) is electrically connected to either the other side of the base substrate (11) or the electrode (13) which is not connected to the first circuit layer (20). Consequently, the electronic device can be efficiently produced at low cost while achieving good communication characteristics.

Inventors:

TASAKI KOUJI
ISHIZAKA HIRONORI
SHIBUTANI MASAHITO
TANAKA KOUSUKE
SHINZAWA MASAHISA
TONOTSUKA HIDEHIKO
IWATA KATSUYA

Application Number:

PCT/JP2005/001486

Publication Date:

August 18, 2005

Filing Date:

February 02, 2005

Export Citation:

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Assignee:

HITACHI CHEMICAL CO LTD (JP)
TASAKI KOUJI
ISHIZAKA HIRONORI
SHIBUTANI MASAHITO
TANAKA KOUSUKE
SHINZAWA MASAHISA
TONOTSUKA HIDEHIKO
IWATA KATSUYA

International Classes:

G06K19/077; H01L21/60; H01L23/31; H01L23/498; H01Q1/22; H01Q1/40; H01Q23/00; H05K1/18; H05K3/32; (IPC1-7): G06K19/00; H05K3/32; H01L21/56; H01L21/60; B42D15/10; C09J9/02; C09J201/00

Foreign References:

JP2001237276A	2001-08-31
JP2002164392A	2002-06-07
JP2001217380A	2001-08-10
JP2003228698A	2003-08-15
JP2003196631A	2003-07-11
JP2003076969A	2003-03-14

Other References: