摘要:
A printed wiring board (802) comprising an insulating substrate (806), a conductor pattern formed on a surface of the insulating substrate (806), a solder filling hole (801) passing through the insulating substrate (806) and arriving at an upper surface of the conductor pattern (851) and a solder (807) filled in the solder filling hole (801), characterized in that the insulating substrate (806) includes fibers (861) therein, and end portions (863) of the fibers (861) protrude from a wall face (810) of the solder filling hole (801) and encroach into the solder (807).
摘要:
A method of producing a printed wiring board (3) comprising a mounting recess portion (1) for mounting an electronic part, a conductor pattern (7), and a heat-sink plate (6) arranged at the bottom of the mounting recess portion (1), characterized in that a conductor pattern (7) is formed on an insulating substrate (5); a heat-sink plate (6) is adhered to a lower face of a portion of the insulating substrate (5) forming the mounting recess portion; and a laser beam (2) is irradiated to an upper face of the portion (10) forming the mounting recess portion to form a mounting recess portion (1).
摘要:
A method of producing a printed wiring board (3) comprising a mounting recess portion (1) for mounting an electronic part, a conductor pattern (7), and a heat-sink plate (6) arranged at the bottom of the mounting recess portion (1), characterized in that a conductor pattern (7) is formed on an insulating substrate (5); a heat-sink plate (6) is adhered to a lower face of a portion of the insulating substrate (5) forming the mounting recess portion; and a laser beam (2) is irradiated to an upper face of the portion (10) forming the mounting recess portion to form a mounting recess portion (1).
摘要:
A printed wiring board (802) comprising an insulating substrate (806), a conductor pattern formed on a surface of the insulating substrate (806), a solder filling hole (801) passing through the insulating substrate (806) and arriving at an upper surface of the conductor pattern (851) and a solder (807) filled in the solder filling hole (801), characterized in that the insulating substrate (806) includes fibers (861) therein, and end portions (863) of the fibers (861) protrude from a wall face (810) of the solder filling hole (801) and encroach into the solder (807).