Abstract:
Provided are semiconductor opto-electronic integrated circuits and methods of forming the same. The semiconductor opto-electronic integrated circuit includes: an optical waveguide disposed on a substrate and including an input terminal and an output terminal; an optical grating formed on the optical waveguide; and an optical active device disposed on the optical grating and receiving an optical signal from the optical waveguide through the optical grating to modulate the optical signal.
Abstract:
Provided is a semiconductor integrated circuit. The semiconductor integrated circuit includes a semiconductor pattern disposed on a substrate and including an optical waveguide part and a pair of recessed portions. The optical waveguide part has a thickness ranging from about 0.05 μm to about 0.5 μm. The recessed portions are disposed on both sides of the optical waveguide part and have a thinner thickness than the optical waveguide part. A first doped region and a second doped region are disposed in the recessed portions, respectively. The first and second doped regions are doped with a first conductive type dopant and a second conductive type dopant, respectively. An intrinsic region is formed in at least the optical waveguide part to contact the first and second doped regions.
Abstract:
Provided is a semiconductor integrated circuit. The semiconductor integrated circuit includes a semiconductor pattern disposed on a substrate and including an optical waveguide part and a pair of recessed portions. The optical waveguide part has a thickness ranging from about 0.05 m to about 0.5 μm. The recessed portions are disposed on both sides of the optical waveguide part and have a thinner thickness than the optical waveguide part. A first doped region and a second doped region are disposed in the recessed portions, respectively. The first and second doped regions are doped with a first conductive type dopant and a second conductive type dopant, respectively. An intrinsic region is formed in at least the optical waveguide part to contact the first and second doped regions.
Abstract:
A method for forming transcriptional circuits and a method for manufacturing a circuit board are disclosed. A method of forming a transcriptional circuit, which includes forming an intaglio pattern corresponding to a circuit pattern by selectively forming a resist on a mold board, filling conductive material in the intaglio pattern, and transferring the conductive material onto a carrier by pressing the carrier onto the mold board such that the carrier faces the surface of the mold board having the conductive material filled in, makes it possible to form transcriptional circuits that can be transcribed into an insulation board using existing equipment, whereby costs can be reduced.
Abstract:
A substrate treating device may include a plating treatment portion configured to perform a plating process of a substrate, a wet treatment portion configured to perform a wet treating process of the substrate, the wet treatment portion being under the plating treatment portion, and a substrate support portion configured to support the substrate so that a plating surface of the substrate faces upward, the substrate support portion being further configured to move the substrate between the plating treatment portion and the wet treatment portion.
Abstract:
Disclosed is a method of manufacturing a printed circuit board. The method of manufacturing a printed circuit board having a via for connecting one layer to another layer can include forming a circuit pattern on one surface of a carrier; processing a hole corresponding to the via on one surface of the carrier; compressing the surface of the carrier into one surface of an insulation body; removing the carrier; processing a via hole on the insulation body, corresponding to a position of the hole; and forming a conductive material in the via hole, to thereby easily process a hole for forming a via and have high design freedom.
Abstract:
A method of manufacturing a circuit board is disclosed. A method of manufacturing a circuit board that includes forming a first circuit pattern on the insulation layer of a carrier, in which an insulation layer and a first seed layer are stacked in order; stacking and pressing the carrier and an insulation board with the side of the carrier having the first circuit pattern facing the insulation board; removing the carrier to transfer the first circuit pattern and the insulation layer onto the insulation board; and forming a second circuit pattern on the insulation layer transferred to the insulation board, allows fine pitch circuit patterns to enable the manufacture of fine circuit patterns of high density on the board, and allows the manufacture of a multi-layer circuit board with a simple process.
Abstract:
Provided is an optical device having an edge effect with improved phase shift and propagation loss of light without decreasing the dynamic characteristics of the optical device. The optical device includes a first semiconductor layer which is doped with a first type of conductive impurities, and has a recessed groove in an upper portion thereof; a gate insulating layer covering the groove and a portion of the first semiconductor layer; and a second semiconductor layer which covers an upper surface of the gate insulating layer and is doped with a second type of conductive impurities opposite to the first type of conductive impurities.
Abstract:
A circuit board including: an insulator having a trench; a first circuit pattern formed to bury a portion of the trench; and a second circuit pattern formed on a surface of the insulator having the trench formed therein.
Abstract:
Provided are a photoelectric device using a PN diode and a silicon integrated circuit (IC) including the photoelectric device. The photoelectric device includes: a substrate; and an optical waveguide formed as a PN diode on the substrate, wherein a junction interface of the PN diode is formed in a direction in which light advances; and an electrode applying a reverse voltage to the PN diode, wherein N-type and P-type semiconductors of the PN diode are doped at high concentrations and the doping concentration of the N-type semiconductor is higher than or equal to that of the P-type semiconductor.