Wiring boards
AssigneeSony Chemicals Corp.
InventorsYoshifumi Ueno, Yukihiro Takikawa
Life of this patent
Estimating the term…
Abstract
In a flexible wiring board of the present invention, a first shield film is connected to a ground wiring at the bottom of an opening in a cover film. The first shield film is connected to a second shield film via a through-hole penetrating from the surface to the rear surface of a base film. Thus, the second shield film is connected to the ground wiring via the first shield film, whereby the wiring board can be wholly shielded.
Claims12
A wiring board comprising a wiring board body having a base film, a plurality of metal lines provided on the base film and a cover film provided on a side of the base film having the metal lines, and a first shield film and a second shield film provided on a side of the wiring board body having the cover film and the opposite side, respectively, wherein the cover film has an opening formed at a predetermined location above the metal lines so that the first shield film is connected to the metal line exposed under the opening, and the wiring board body has a through-hole penetrating at least the base film and the cover film so that the first and second shield films are connected to each other via the through-hole.
A wiring board comprising a wiring board body having a base film, a plurality of metal lines provided on the base film and a cover film provided on a side of the base film having the metal lines, and a first shield film and a second shield film provided on a side of the wiring board body having the cover film and the opposite side, respectively, wherein the wiring board body has a through-hole provided at a predetermined location on the metal lines and penetrating the base film, the cover film and the metal line, and a metal film is formed on an inner circumferential face of the through-hole and connected to the metal line exposed on the inner circumferential face of the through-hole, and the first and second shield films are connected to each other via the through-hole and at least one shield film is connected to the metal film.
Dependencies are inferred from the claim text.