公开(公告)号：US5076864A

公开(公告)日：1991-12-31

申请号：US403519

申请日：1989-09-06

申请人： Yasuo Tanaka ,  Naohito Yoshimura ,  Koichi Nakano ,  Touru Nohtomi ,  Morio Gaku

发明人： Yasuo Tanaka ,  Naohito Yoshimura ,  Koichi Nakano ,  Touru Nohtomi ,  Morio Gaku

IPC分类号： C23C22/63 ,  H05K3/38 ,  H05K3/46

CPC分类号： H05K3/385 ,  C23C22/63 ,  H05K2203/0315 ,  H05K2203/1157 ,  H05K3/4611

摘要： A process for producing a multilayer printed wiring board, characterized in that copper surface of internal layer(s) is chemically oxidized, thereby forming a brown or black, oxidized copper surface on the internal layer board; and said oxidized copper surface of said internal layer board is treated with an acidic aqueous solution of a reducing agent containing at least one material selected from the group consisting of zinc formaldehyde sulfoxylate and sodium hypophosphite.

公开(公告)号：US5538832A

公开(公告)日：1996-07-23

申请号：US347889

申请日：1994-12-01

申请人： Tetsuo Aoyama ,  Takeshi Nagasaka ,  Toshihiko Kobayashi ,  Naohito Yoshimura ,  Takashi Nakata ,  Youichi Takizawa

发明人： Tetsuo Aoyama ,  Takeshi Nagasaka ,  Toshihiko Kobayashi ,  Naohito Yoshimura ,  Takashi Nakata ,  Youichi Takizawa

IPC分类号： G03F7/32 ,  H05K3/10 ,  G03F7/30

CPC分类号： G03F7/322 ,  H05K3/108 ,  H05K2203/122

摘要： A developing solution comprising a specific amount of a quaternary ammonium hydroxide represented by the general formula [(R.sup.1).sub.3 N--R].sup.+ .multidot.OH.sup.- (R indicates an alkyl group having 1 to 3 carbon atoms or a hydroxy-substituted alkyl group having 1 to 3 carbon atoms, and R.sup.1 indicates an alkyl group having 1 to 3 carbon atoms) and, if necessary, a quaternary ammonium hydrogen carbonate represented by the general formula [(R.sup.1).sub.3 N--R].sup.+ .multidot.HCO.sub.3.sup.- (R and R.sup.1 are the same as the above) and having a pH in the range of 9 to 13, and a process for producing printed circuit boards using an organic alkali solution, are provided. The developing solution needs no defoaming agent because it causes little foaming. Printed circuit boards produced by using the developing solution have excellent finished accuracy. Therefore, fine circuits of printed circuit networks can be produced with stability.

摘要翻译： 包含特定量的由通式[（R1）3N-R] + xOH-（R表示具有1至3个碳原子的烷基或具有1至3个碳原子的羟基取代的烷基）表示的季铵氢氧化物的显影液 3个碳原子，R1表示碳原子数1〜3的烷基），根据需要，由通式[（R1）3N-R] + xHCO3-（R和R1相同）表示的季铵碳酸氢盐 如上所述），pH为9〜13的范围，以及使用有机碱溶液的印刷电路板的制造方法。 开发溶液不需要消泡剂，因为它几乎不起泡。 使用显影液生产的印刷电路板具有优异的成品精度。 因此，可以稳定地制造印刷电路网络的精细电路。