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AssigneeMitsui Mining & Smelting Co., Ltd.
InventorTetsuyuki Narabayashi
Estimating the term…
In a method for inspecting a wiring pattern on a flexible printed wiring board, light is illuminated from a front surface side of the TAB tape T while a drum is provided on the rear surface side of the TAB tape T such that a reflection method becomes main and a transmission method becomes subordinate, and when imaging a wiring pattern image of an inspection part D on the front surface side, it becomes possible to determine the quality of a wiring pattern taking advantage of the reflection method. Furthers by utilizing the indirect transmission light, defects of a short-circuiting type on the light permeable insulating film that are difficult to be detected with the reflection method can be detected as darker defects than the light permeable insulating film by the transmission method.
A wiring pattern inspection method for a flexible printed wiring board, which inspects a quality of a wiring pattern formed on a front surface of a light permeable insulating film, the wiring pattern inspection method comprising:
An inspection apparatus for a flexible printed wiring board, which inspects a quality of a wiring pattern formed on a front surface of a light permeable insulating film, the inspection apparatus comprising:
Dependencies are inferred from the claim text.