Abstract: Provided is a cable laying method using a cable laying apparatus capable of changing a direction of a cable, the cable laying method including: (A) installing a frame unit; (B) arranging a trailer bogie loaded with a cable drum inside the frame unit without additional loading work; (C) rotating the cable drum, which is loaded in the trailer bogie, by an under roller part; (D) changing a withdrawal direction of a cable unwound from the cable drum by a traverse part of the frame unit; (E) supplying the cable, the withdrawal direction of which is changed by the traverse part, to a cable unwinding part located at the rear of the traverse part; and (F) supplying the cable passing through the cable unwinding part to a required place through a curvature guide part located at the rear of the cable unwinding part, wherein the traverse part is configured to change a direction of the cable withdrawn in a radial direction of the cable drum to an axial direction of the cable drum.

Abstract: Provided is a cable laying apparatus capable of changing a direction of a cable, which is configured to lay a cable from a cable drum placed on a trailer bogie without additional unloading work, the cable laying apparatus including a frame unit variably installed to accommodate the cable drum therein; a traverse part provided at a side of the frame unit and configured to guide a withdrawal direction of the cable wound around the cable drum; and a cable unwinding part located at the rear of the traverse part and configured to pull the cable, wherein the traverse part is further configured to change the withdrawal direction of the cable withdrawn in a radial direction of the cable drum to an axial direction of the cable drum.

Abstract: Provided is a cable laying apparatus capable of changing a direction of a cable, which is configured to lay a cable from a cable drum placed on a trailer bogie without additional unloading work, the cable laying apparatus including a frame unit variably installed to accommodate the cable drum therein; a traverse part provided at a side of the frame unit and configured to guide a withdrawal direction of the cable wound around the cable drum; and a cable unwinding part located at the rear of the traverse part and configured to pull the cable, wherein the traverse part is further configured to change the withdrawal direction of the cable withdrawn in a radial direction of the cable drum to an axial direction of the cable drum.

Abstract: Provided is a cable laying method using a cable laying apparatus capable of changing a direction of a cable, the cable laying method including: (A) installing a frame unit; (B) arranging a trailer bogie loaded with a cable drum inside the frame unit without additional loading work; (C) rotating the cable drum, which is loaded in the trailer bogie, by an under roller part; (D) changing a withdrawal direction of a cable unwound from the cable drum by a traverse part of the frame unit; (E) supplying the cable, the withdrawal direction of which is changed by the traverse part, to a cable unwinding part located at the rear of the traverse part; and (F) supplying the cable passing through the cable unwinding part to a required place through a curvature guide part located at the rear of the cable unwinding part, wherein the traverse part is configured to change a direction of the cable withdrawn in a radial direction of the cable drum to an axial direction of the cable drum.

Abstract: Disclosed herein is a UV light emitting device. The UV light emitting device includes a first conductive type semi-conductor layer, an anti-cracking layer disposed on the first conductive type semiconductor layer, an active layer disposed on the anti-cracking layer, and a second conductive type semiconductor layer disposed on the active layer, wherein the anti-cracking layer includes first lattice points and second lattice points disposed at an interface between the first conductive type semiconductor layer and the anti-cracking layer, the first lattice points are connected to lattices of the first conductive type semiconductor layer, and the second lattice points are not connected to the lattices of the first conductive type semiconductor layer.

Abstract: Disclosed herein is a UV light emitting device. The UV light emitting device includes a first conductive type semi-conductor layer, an anti-cracking layer disposed on the first conductive type semiconductor layer, an active layer disposed on the anti-cracking layer, and a second conductive type semiconductor layer disposed on the active layer, wherein the anti-cracking layer includes first lattice points and second lattice points disposed at an interface between the first conductive type semiconductor layer and the anti-cracking layer, the first lattice points are connected to lattices of the first conductive type semiconductor layer, and the second lattice points are not connected to the lattices of the first conductive type semiconductor layer.

Abstract: A light emitting diode (LED) having a barrier layer with a superlattice structure is disclosed. In an LED having an active region between an GaN-based N-type compound semiconductor layer and a GaN-based P-type compound semiconductor layer, the active region comprises a well layer and a barrier layer with a superlattice structure. As the barrier layer with the superlattice structure is employed, it is possible to reduce occurrence of defects caused by lattice mismatch between the well layer and the barrier layer.

Abstract: A light emitting diode (LED) having a barrier layer with a superlattice structure is disclosed. In an LED having an active region between an GaN-based N-type compound semiconductor layer and a GaN-based P-type compound semiconductor layer, the active region comprises a well layer and a barrier layer with a superlattice structure. As the barrier layer with the superlattice structure is employed, it is possible to reduce occurrence of defects caused by lattice mismatch between the well layer and the barrier layer.