摘要:
A printed circuit board structure for a mobile terminal including a main printed circuit board including elements required for functions of the mobile terminal and mounted on an upper surface of the main printed circuit board, and an auxiliary printed circuit board laminated on the main printed circuit board including at least one element further required for the functions of the mobile terminal and mounted on an upper surface of the auxiliary printed circuit board.
摘要:
An embedded capacitor comprises a first substrate on which a plurality of electrically insulated electrode patterns and a ground pattern are formed, a second substrate separated from the first substrate, a plurality of dielectric layers stacked between the first and second substrates, a plurality of metal layers inserted between the dielectric layers and connected to the electrode patterns of the first substrate, and a plurality of ground layers inserted between the dielectric layers alternately with the metal layers.
摘要:
An embedded capacitor comprises a first substrate on which a plurality of electrically insulated electrode patterns and a ground pattern are formed, a second substrate separated from the first substrate, a plurality of dielectric layers stacked between the first and second substrates, a plurality of metal layers inserted between the dielectric layers and connected to the electrode patterns of the first substrate, and a plurality of ground layers inserted between the dielectric layers alternately with the metal layers.
摘要:
A large capacity memory module mounting device employed in a portable terminal is provided, including a large capacity memory module including a plurality of first contact pads; and a flexible circuit board including a plurality of second contact pads and electrically connected to the large capacity memory module by forming solder pads in a heating process after the first and second contact pads are positioned in a face-to-face manner. Accordingly, the large capacity memory module can be advantageously mounted to the portable terminal and an electromagnetic field can be effectively shielded.
摘要:
An embedded circuit board is disclosed including a first copper clad laminate formed with a plurality of cavities and including a plurality of chips having different thicknesses embedded in the cavities, a second copper clad laminate provided in the cavities to allow the first copper clad laminate to level with the chips; and a resin coated copper foil provided on upper surfaces of the first and second copper clad laminates.
摘要:
An electric circuit package includes: a printed circuit substrate having an insulating layer and conductive pattern layers formed on an upper surface of the insulating layer; at least one of electronic parts disposed on an upper surface of the printed circuit substrate; at least one of conductive pins electrically connected to an conductive pattern layer providing grounding among the conductive pattern layers; and a molding member formed on the insulating layer in such a manner that the conductive pins and the electric parts are buried in the molding member, wherein each conductive pin has an upper surface exposed to an upper part of the molding member.
摘要:
Provided is a System-In-Package (SIP) having embedded circuit boards in which boards are electrically connected and a plurality of chips are embedded in a board in a stacked manner. The SIP includes a first board on a surface of which a first circuit is formed, a second board which is provided on a top surface of the first board in a stacked manner and includes a plurality of chips embedded therein in a stacked manner, and a third board which is provided on a top surface of the second board in a stacked manner and on a surface of which a second circuit is formed.
摘要:
An embedded circuit board is disclosed including a first copper clad laminate formed with a plurality of cavities and including a plurality of chips having different thicknesses embedded in the cavities, a second copper clad laminate provided in the cavities to allow the first copper clad laminate to level with the chips; and a resin coated copper foil provided on upper surfaces of the first and second copper clad laminates.
摘要:
A semiconductor monolithic integrated optical transmitter including a plurality of active layers formed on a semiconductor substrate is disclosed, which comprises: a distributed feedback laser diode including a grating for reflecting light with a predetermined wavelength and a first active layer for oscillating received light from the grating; an electro-absorption modulator including a second active layer for receiving light from the first active layer, wherein the received light intensity is modulated through a change of absorbency in accordance with an applied voltage; an optical amplifier including a third active layer for amplifying received light from the second active layer; a first optical attenuator between the first active layer and the second active layer; and a second optical attenuator between the second active layer and the third active layer.
摘要:
A Printed Circuit Board (PCB) is provided in which at least one built-in Integrated Circuit (IC) package has a plurality of conductive bumps on an IC. The plurality of conductive bumps are for external electrical connection. The IC package is accommodated within a core layer of a multi-layer PCB by a connection member on the IC. The connection member is formed between the conductive bumps and the core layer with contact holes in contact with the conductive bumps. The conductive bumps are electrically connected through conductor layers formed in the contact holes.