摘要:
Disclosed herein is an electromagnetic bandgap structure, including: a dielectric layer; a plurality of conductive plates formed on one side of the dielectric layer; a stitching via serving to electrically connect two adjacent conductive plates of the plurality of conductive plates; and a first dummy via formed each of the plurality of conductive plates in a direction of thickness of the dielectric layer, and a printed circuit board comprising the electromagnetic bandgap structure. The printed circuit board comprising the electromagnetic bandgap structure can solve a mixed signal problem even when an analog circuit and a digital circuit are simultaneously mounted therein.
摘要:
Provided is a substrate structure including: a base substrate on which a conductive pattern is formed; a first plating layer covering the conductive pattern; and a second plating layer covering the first plating layer, wherein the first plating layer includes an electroless reduction plating layer.
摘要:
The present invention relates to an embedded printed circuit board and a manufacturing method thereof. The present invention provides an embedded printed circuit board including a substrate in which a cavity is formed in a predetermined portion and a wiring layer is formed in a portion without the cavity; a chip inserted into the cavity and including a plurality of pads; a filler filled between the chip and the cavity to fix the chip; and a connection layer formed between the wiring layer and the pads to connect the wiring layer and the pads to each other. Further, the present invention provides a manufacturing method of the embedded printed circuit board.
摘要:
The present invention relates to an embedded printed circuit board and a manufacturing method thereof. The present invention provides an embedded printed circuit board including a substrate in which a cavity is formed in a predetermined portion and a wiring layer is formed in a portion without the cavity; a chip inserted into the cavity and including a plurality of pads; a filler filled between the chip and the cavity to fix the chip; and a connection layer formed between the wiring layer and the pads to connect the wiring layer and the pads to each other. Further, the present invention provides a manufacturing method of the embedded printed circuit board.
摘要:
Provided is a substrate structure including: a base substrate on which a conductive pattern is formed; a first plating layer covering the conductive pattern; and a second plating layer covering the first plating layer, wherein the first plating layer includes an electroless reduction plating layer.
摘要:
Disclosed herein is an electromagnetic wave shielding substrate including an electromagnetic bandgap structure which is formed along the edge thereof in order to prevent electromagnetic waves from being emitted therefrom. The electromagnetic wave shielding substrate can effectively prevent the emission of electromagnetic waves.
摘要:
Disclosed herein is a printed circuit board. When power layers for supplying different voltages are sequentially stacked, a first EBG cell formed between a first power layer and a ground layer is arranged within a second EBG cell formed between a second power layer and the ground layer to allow the first EBG cell and the second EBG cell to have a double EBG structure. Accordingly, the present invention can prevent a DC open state while preventing noise and realizing band-stop characteristics.
摘要:
Disclosed herein are an electromagnetic bandgap structure and a printed circuit board having the same. The bandgap structure includes a conductive layer including a plurality of conductive plates, a first metal layer disposed under the conductive layer and including a first stitching pattern electrically connected to a first conductive plate of the plurality of conductive plates, and a second metal layer disposed under the first metal layer and including a second stitching pattern electrically connected to both the first stitching pattern and a second conductive plate of the plurality of conductive plates. The bandgap to structure includes stitching patterns formed in two layers different from the conductive layer, thus offering a stop-band having a desired bandwidth in a compact structure.
摘要:
A rigid flexible printed circuit board (PCB) and a method of fabricating the same. Since a polyimide copper clad laminate is not used during the fabrication of the rigid flexible PCB, an increase in cost resulting from use of the polyimide copper clad laminate and poor reliability of adhesion at an interface between different materials are avoided.
摘要:
Disclosed is a printed circuit board, which includes an electromagnetic bandgap structure disposed around an antenna so as to prevent noise from being transmitted to the antenna. The printed circuit board includes an antenna, a circuit chip, a plurality of metal layers and a plurality of dielectric layers, a pair of transmission lines for transmitting a signal to the antenna, and an electromagnetic bandgap structure disposed between the antenna and the circuit chip and for preventing an electromagnetic wave from being transmitted from the circuit chip to the antenna.