Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1995-04-07
1996-10-08
Ryan, Patrick
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
174255, 174256, 361746, 257702, 257729, B32B 900
Patent
active
055629717
ABSTRACT:
A multilayer printed wiring board comprising a plurality of interlaminar insulating layers, a plurality of insulating circuit boards having circuits formed on the insulating substrates, and via holes for making electrical connection between two or more layers of circuits, wherein the difference between the glass transition point of an interlaminar insulating layer and that of the adjoining insulating substrate is not greater than 60.degree. C., is proof against exfoliation due to heat history of the board and has high reliability of insulation and through-hole connection.
REFERENCES:
patent: 3244795 (1966-04-01), Latimer
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patent: 4201616 (1980-05-01), Chellis et al.
patent: 4578308 (1986-03-01), Hani et al.
patent: 4640010 (1987-02-01), Brown
patent: 5068708 (1991-11-01), Newman
patent: 5088008 (1992-02-01), Takeyama et al.
patent: 5103293 (1992-04-01), Bonafina et al.
Arike Shigeharu
Miyashita Shinjirou
Sugiyama Takashi
Suzuki Takayuki
Tsuru Yoshiyuki
Hitachi Chemical Company Ltd.
Lam Cathy K.
Ryan Patrick
LandOfFree
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