Title:
CRYSTAL DEVICE
Document Type and Number:
Japanese Patent JP3906048
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that a reference signal generated by a crystal resonator is largely attenuated in a wiring layer.
SOLUTION: A crystal device 7 consisting of a base 1 having mounting portions 1a, 1b on both top and bottom surfaces thereof, a crystal resonator 5 fixed on the top surface of the base 1 via a fixing member 8, and a semiconductor element 6 mounted on the bottom surface of the base 1 and performing temperature compensation for the resonator 5. The base 1 is a sintered body containing a crystal phase of one kind selected from among quartz, cristobalite, tridymite, or enstatite, which is obtained by baking a formed body containing 20-80 vol.% lithium silica glass containing 5-30 wt.% Li2O and having a yield point of 400-800°C and 20-80 vol.% a filler component containing one selected from among quartz, cristobalite, tridymite, enstatite or forsterite. A wiring layer 2 is formed of a metallic material having a specific electric resistance of 2.5 μΩ/cm or less, and the material 8 has an elastic modulus of 3.6 GPa or less.
Inventors:
Takuya Ouchi
Application Number:
JP2001310160A
Publication Date:
April 18, 2007
Filing Date:
October 05, 2001
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
C04B35/14; H03H9/02; C04B35/16; H01L23/15; H03B5/32; H03H9/10; (IPC1-7): H03H9/02; C04B35/14; C04B35/16; H01L23/15; H03B5/32; H03H9/10
Domestic Patent References:
| JP10321747A | ||||
| JP8111626A | ||||
| JP9098049A | ||||
| JP2001127551A |
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