Thru hole filling method, thru hole filling construction and thru hole manufacturing method
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[0018] The through-hole filling method, the through-hole filling structure and the through-hole manufacturing method of the present invention select a dry film as the photoresist layer when forming the photoresist layer in the through-hole filling process, and form the dry film in a vacuum and low-pressure environment.
[0019] The through-hole filling method, the through-hole filling structure and the through-hole manufacturing method of the present invention are described in detail through preferred embodiments, so as to make the description of the through-hole filling method and the through-hole manufacturing method clearer.
[0020] refer to figure 1 As shown, the through hole filling method in the embodiment of the present invention includes the following steps,
[0021] Step s1, providing a substrate with through holes on the surface;
[0022] Step s2, sequentially forming a connection layer and a seed layer on the surface of the substrate;
[0023] Step s3, forming a ...
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