Title:
プリント配線板
Document Type and Number:
Japanese Patent JP4810756
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board, having impedance measurement region capable of accurately grasping the characteristics of a conductor circuit. SOLUTION: A printed wiring board 8 is equipped with a product region 7, which is provided with a conductor circuit 71 and turned into a product, and an impedance measuring region 6 for measuring the characteristic impedance. The impedance measuring region 6 is composed of an upper limit value measuring circuit 1 for measuring the upper limit of characteristic impedance that may occur in the conductor circuit 71 and a lower limit value measuring circuit 2 for measuring the lower limit of characteristic impedance that may occur in the conductor circuit 7.
Inventors:
Nobukata Goto
Application Number:
JP2001162665A
Publication Date:
November 09, 2011
Filing Date:
May 30, 2001
Export Citation:
Assignee:
IBIDEN CO.,LTD.
International Classes:
G01R31/02; H05K3/00; G01R27/02; H05K1/11
Domestic Patent References:
| JP5041567A | ||||
| JP5048272A | ||||
| JP5102622A | ||||
| JP2000138435A | ||||
| JP7240567A |
Attorney, Agent or Firm:
Yoshiyasu Takahashi
Tamiwa Iwakura
Tamiwa Iwakura