Catheter flexible printed wiring board and method for manufacturing the same
AssigneeNippon Mektron, Ltd.
InventorsAkio YOSHIDA, Ryoichi TOYOSHIMA, Mitsunori SASAKI, Hiroyasu HASEGAWA
Life of this patent
Estimating the term…
Abstract
A catheter flexible printed wiring board which includes: a long flexible insulating base member having a tip end portion and a base end portion; and a conductive pattern formed on the flexible insulating base member and extending from the base end portion to the tip end portion, wherein the conductive pattern at the base end portion is wider than the conductive pattern at the tip end portion and thicker than the conductive pattern at the tip end portion.
Claims16
A catheter flexible printed wiring board comprising:
- a long flexible insulating base member having a tip end portion and a base end portion;
- and
- a conductive pattern formed on the flexible insulating base member and extending from the base end portion to the tip end portion,
- wherein the conductive pattern at the base end portion is wider than the conductive pattern at the tip end portion and thicker than the conductive pattern at the tip end portion.
A catheter flexible printed wiring board manufacturing method comprising:
- a step of preparing a long flexible insulating base member having a tip end portion and a base end portion and having a seed layer on a surface;
- a step of patterning a resist layer formed on the seed layer to form a resist mask provided with an opening extending from the tip end portion to the base end portion, a width of the opening at the base end portion being greater than a width of the opening at the tip end portion;
- a step of forming a plated layer on the seed layer exposed in the opening of the resist mask such that a plating thickness at the base end portion is greater than a plating thickness at the tip end portion;
- and
- a step of removing the resist mask and the seed layer therebelow.
A catheter flexible printed wiring board manufacturing method comprising:
- a step of preparing a long flexible insulating base member having a tip end portion and a base end portion and a metal-clad laminate having metal foil on a surface of the flexible insulating base member;
- a step of forming a resist mask extending from the tip end portion to the base end portion on the metal foil and having a greater width at the base end portion than a width at the tip end portion;
- an etching step of removing, by etching, a portion of the metal foil uncovered with the resist mask;
- and
- a step of removing the resist mask, wherein
- the etching step comprises etching the metal foil such that a thickness of the metal foil at the base end portion is greater than a thickness of the metal foil at the tip end portion.
Dependencies are inferred from the claim text.