IBIDEN has been granted a patent for a method to manufacture printed wiring boards. The process involves embedding metal posts in a resin layer, forming a dam structure around the posts, and exposing the ends of the posts for connection. GlobalData’s report on IBIDEN gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on IBIDEN, Diesel Particulate Filters (DPF) was a key innovation area identified from patents. IBIDEN's grant share as of February 2024 was 41%. Grant share is based on the ratio of number of grants to total number of patents.
Method for manufacturing printed wiring board with metal posts
A recently granted patent (Publication Number: US11917756B2) discloses a method for manufacturing a printed wiring board. The method involves forming a plurality of metal posts on a conductor circuit on a resin insulating layer, embedding them in an outermost resin layer, and creating a dam structure around a pad group comprising the metal posts. The thickness of the outermost resin layer is then reduced to expose the end portions of the metal posts, forming the pad group with the dam structure surrounding it.
The patent further details various aspects of the manufacturing method, including the formation of a mask using a dry film or metal foil, the application of plasma or blast treatment to reduce the resin layer thickness, and the formation of a trapezoidal dam structure. Additionally, the method involves creating openings in the resin layer to expose portions of the conductor circuit and form pads outside the dam structure, where outer-side metal posts can be formed. The patent emphasizes the use of the same resin material for the insulating and outermost layers, ensuring compatibility and consistency in the manufacturing process. Overall, the patented method offers a novel approach to manufacturing printed wiring boards with improved efficiency and precision in creating metal post structures and dam formations.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
