31-05-2018 дата публикации
Номер: US20180147848A1
Принадлежит:
A method for forming a film that covers a side wall of a through hole in a substrate having the through hole, the method including, in the following order, the steps of providing a substrate having a through hole that passes therethrough from a first surface to a second surface, which is a surface opposite to the first surface, forming, on the first surface, a lid member that blocks an opening of the through hole open on the first surface, recessing, in a direction away from the first surface, a surface of the lid member that blocks the opening by removing part of the lid member through the opening, and forming a film that covers the side wall of the through hole. 1. A method for forming a film that covers a side wall of a through hole in a substrate having the through hole , the method comprising , in order , the steps of:providing a substrate having a through hole that passes therethrough from a first surface to a second surface, the second surface being a surface opposite to the first surface;forming, on the first surface, a lid member that blocks an opening of the through hole open on the first surface;recessing, in a direction away from the first surface, a surface of the lid member that blocks the opening by removing part of the lid member through the opening; andforming a film that covers the side wall of the through hole.2. The method for forming a film according to claim 1 , wherein the lid member is removed from the substrate after the film that covers the side wall of the through hole is formed.3. The method for forming a film according to claim 2 , wherein a space is located inside the lid member in the recessing claim 2 , in a direction away from the first surface claim 2 , of a surface of the lid member that blocks the opening.4. The method for forming a film according to claim 2 , wherein a through hole is formed in the lid member in the recessing claim 2 , in a direction away from the first surface claim 2 , of a surface of the lid member that blocks ...
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