摘要:
Disclosed herein is a printed circuit board including: a substrate; first upper and lower insulating layers covering upper and lower sides of the substrate; a via penetrating the substrate and the first upper and lower insulating layers to form an electrical connection; and second upper and lower insulating layers covering or surrounding the via, wherein the first upper and lower insulating layers or the second upper and lower insulating layers include a general circuit region including general circuit patterns and circuit patterns connected to the via and a microcircuit region including microcircuit patterns having a smaller circuit line width than that of the general circuit region.
摘要:
The preferred embodiment of the present invention can prevent signal distortions such as stress, or the like, occurring at the time of power delivery due to the difference in the lengths of the metal wires for electrically connecting each of the plurality of semiconductor chips formed on the dual die package substrate.
摘要:
Disclosed is a substrate having an electromagnetic shielding member, which includes a first circuit layer connected to a ground layer, a coverlay formed on the first circuit layer, an electromagnetic shielding member formed on the coverlay, and a first via formed in the coverlay to connect the electromagnetic shielding member to the first circuit layer, so that the electromagnetic shielding member and the ground layer are connected to each other through a via structure, thereby preventing the electromagnetic shielding member from becoming cracked due to the stepped portion of the substrate.
摘要:
A method of manufacturing a rigid-flexible printed circuit board, including providing a base substrate in which coverlays are respectively formed on two sides of a flexible copper foil laminate on both sides of which inner circuit patterns are respectively formed; layering insulation layers and copper foil layers on portions of coverlays which are to be a rigid region of the flexible copper foil laminate; forming a via hole in the rigid region, and, simultaneously, forming first windows in the coverlays in a flexible region; forming outer circuit patterns including areas adjacent to the first windows; and applying solder resist in the rigid region to expose portions of the external circuit patterns, where the outer circuit patterns formed in the areas adjacent to the first windows include additional plating portions for covering portions of the coverlays.
摘要:
A method of manufacturing a rigid-flexible printed circuit board, including providing a base substrate in which coverlays are respectively formed on two sides of a flexible copper foil laminate on both sides of which inner circuit patterns are respectively formed; layering insulation layers and copper foil layers on portions of coverlays which are to be a rigid region of the flexible copper foil laminate; forming a via hole in the rigid region, and, simultaneously, forming first windows in the coverlays in a flexible region; forming outer circuit patterns including areas adjacent to the first windows; and applying solder resist in the rigid region to expose portions of the external circuit patterns, where the outer circuit patterns formed in the areas adjacent to the first windows include additional plating portions for covering portions of the coverlays.
摘要:
The present invention relates to a rigid-flexible printed circuit board and, more particularly, to a rigid-flexible printed circuit board including CL via holes which can facilitate electrical connection to an inner circuit pattern in a flexible region. Since the coverlays are layered on the entire surface of the double-sided FCCL without previous processing thereof, the via holes are formed in the coverlays while a drilling process is performed to form the via holes, and then the copper plating is performed over the entire surface thereof, it is possible to eliminate the cost of previously processing the coverlays, easily perform a process of provisionally layering the coverlays on the double-sided FCCL, and decrease the cost therefor.
摘要:
Disclosed is a method of manufacturing a printed circuit board for a semiconductor package, which minimizes or completely obviates masking work upon the plating of each pad for the surface treatment of a printed circuit board for a semiconductor package, thereby simplifying the overall process and increasing the mounting reliability.