Invention Grant
- Patent Title: Circuit board with catalytic adhesive
-
Application No.: US15878398Application Date: 2018-01-23
-
Publication No.: US10306756B2Publication Date: 2019-05-28
- Inventor: Kenneth S. Bahl , Konstantine Karavakis
- Applicant: Sierra Circuits, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Sierra Circuits, Inc.
- Current Assignee: Sierra Circuits, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: File-EE-Patents.com
- Agent Jay A. Chesavage
- Main IPC: H05K1/09
- IPC: H05K1/09 ; H05K3/38 ; H05K1/03 ; H05K1/02 ; H05K3/42 ; H05K3/46 ; H05K1/11 ; H05K3/18

Abstract:
A catalytic resin is formed by mixing a resin and either homogeneous or heterogeneous catalytic particles, the resin infused into a woven glass fabric to form an A-stage pre-preg, the A-stage pre-preg cured into a B-stage pre-preg, thereafter held in a vacuum and between pressure plates at a gel point temperature for a duration of time sufficient for the catalytic particles to migrate away from the resin rich surfaces of the pre-preg, thereby forming a C-stage pre-preg after cooling. The C-stage pre-preg subsequently has trenches formed by removing the resin rich surface, the trenches extending into the depth of the catalytic particles, optionally including drilled holes to form vias, and the C-stage pre-preg with trenches and holes placed in an electroless bath, whereby traces form in the trenches and holes where the surface of the cured pre-preg has been removed.
Public/Granted literature
- US20180168036A1 Circuit board with Catalytic Adhesive Public/Granted day:2018-06-14
Information query