Title:
METHOD FOR INSPECTING FLEXIBLE CIRCUIT BOARD
Document Type and Number:
Japanese Patent JP3242883
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for efficiently inspecting non-defective or defective of a flexible circuit board.
SOLUTION: After a moisture of a flexible circuit board is absorbed in an atmosphere of 30 mm Hg or more of a steam pressure, a voltage is applied between two wirings 2, and an insulating resistance value R between the wirings 2 during voltage applying is measured. A change amount Δlog (R) of an insulating resistance value of each arbitrary time is obtained. Non-defective or defective of the flexible circuit board is decided according to whether the maximum value of the change amount Δlog (R) of the insulating resistance value is a predetermined reference value or less or not.
Inventors:
Mitsuru Honjo
Yasufumi Miyake
Toshihiko Sugimoto
Ikuro Kawamoto
Yasufumi Miyake
Toshihiko Sugimoto
Ikuro Kawamoto
Application Number:
JP22197098A
Publication Date:
December 25, 2001
Filing Date:
August 05, 1998
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
G01R31/02; G01R31/00; G01R31/28; H05K3/00; (IPC1-7): G01R31/02; H05K3/00
Domestic Patent References:
| JP643194A |
Attorney, Agent or Firm:
Yoshito Fukushima
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