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    • 7. 发明申请
    • SINGLE-SIDED CIRCUIT BOARD AND METHOD FOR MANUFACTURING THE SAME
    • 单面电路板及其制造方法
    • WO98056220A1
    • 1998-12-10
    • PCT/JP1998/002498
    • 1998-06-05
    • H05K3/00H05K3/28H05K3/38H05K3/42H05K3/46H05K3/40
    • H05K3/4617H05K3/0035H05K3/28H05K3/382H05K3/386H05K3/423H05K3/4602H05K3/4652H05K2201/0195H05K2201/035H05K2201/0394H05K2201/09563H05K2203/0733H05K2203/1189Y10T29/49117Y10T29/49126Y10T29/49128Y10T29/49155Y10T29/49165
    • Holes (40a) are formed with a laser beam through an insulating substrate (40) on which a metallic layer (42) is formed and via holes (36a) are formed by filling up the holes (40a) with a metal (46). After the via holes (36a) are formed, a conductor circuit (32a) is formed by etching the metallic layer (42) and a single-sided circuit board (30A) is formed by forming projecting conductors (38a) on the surfaces of the via holes (36a). The projecting conductors (38a) on the circuit board (30A) are put on the conductor circuit (32b) of another single-sided circuit board (30B) with adhesive layers (50) composed of an uncured resin in between and heated and pressed against the circuit (32b). The projecting conductors (38a) get in the uncured resin by pushing aside the resin and are electrically connected to the circuit (32b). Since single-sided circuit boards (30A, 30B, 30C, and 30D) can be inspected for defective parts before the boards (30A, 30B, 30C, and 30D) are laminated upon one another, only defectless single-sided circuit can be used in the step of lamination.
    • 孔(40a)通过其上形成有金属层(42)的绝缘基板(40)形成激光束,并且通过用金属(46)填充孔(40a)形成通孔(36a)。 在形成通孔(36a)之后,通过蚀刻金属层(42)形成导体电路(32a),通过在表面上形成突出导体(38a)形成单面电路板(30A) 通孔(36a)。 电路板(30A)上的突出导体(38a)被放置在另一单面电路板(30B)的导体电路(32b)上,其中粘合剂层(50)由未固化的树脂组成,并被加热并压靠 电路(32b)。 突出导体(38a)通过推开树脂并与电路(32b)电连接而进入未固化树脂。 由于在板(30A,30B,30C和30D)彼此层叠之前可以检查单面电路板(30A,30B,30C和30D)中的缺陷部件,因此只能使用无缺陷的单面电路 在层压步骤中。