摘要:
The present invention provides a balance circuit including: a first balance trans having a primary coil and a secondary coil, the primary coil being connected to an output terminal of a first lamp, and the secondary coil being connected to an output terminal of a second lamp and having a current controlled by the primary coil; and a second balance trans having a primary coil and a secondary coil, the primary coil being connected to an output terminal of a third lamp, and the secondary coil being connected to an output terminal of a fourth lamp and having a current controlled by the primary coil connected to the output terminal of the third lamp, wherein the secondary coil of the first balance trans is connected to the primary coil of the second balance trans, and an inverter circuit including the same.
摘要:
The present invention relates to a method for forming silicon oxide films on substrates using an atomic layer deposition process. Specifically, the silicon oxide films are formed at low temperature and high deposition rate via the atomic layer deposition process using a Si2Cl6 source unlike a conventional atomic layer deposition process using a SiCl4 source. The atomic layer deposition apparatus used in the above process can be in-situ cleaned effectively at low temperature using a HF gas or a mixture gas of HF gas and gas containing —OH group.
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 is a method for preparing a mixed formulation of sustained release microspheres with various compositions by a continuous one-step process. The present method is characterized by preparing the mixed formulation of sustained release microspheres with different compositions by a continuous one-step process by continuously introducing the mixed fluids into a dryer from the two or more different fluids for preparation of sustained release microspheres containing a biodegradable polymer, a drug, an additive and a solvent with different types of contents or both of the components, by controlling the mixing ratios of the fluids according to the time, unlike a conventional method including spray-drying a mixture of microspheres containing a biodegradable polymer, a drug, an additive and a solvent with a single composition. The present method can achieve a desired drug release, which is difficult to be obtained by conventional microspheres with a single composition, by preparing microspheres by a continuous one-step process, and can simplify the conventional complex process of separately preparing several microsphere formulations and then mixing the formulations at a proper ratio to achieve a desired drug release.
摘要:
The present invention relates generally to the amphiphilic polyelectrolyte, poly(2-ethylacrylic acid) and covalently bonded lipids to generate Lipo-PEAA. These Lipo-PEAA are then used to make pH-sensitive liposomes which become unstable, permeable or fusogenic with certain pH changes. In addition, this invention generally describes methods for delivering therapeutic compounds and drugs to target cells by administering to a host the pH-sensitive liposomes of the present invention.
摘要:
A lateral flow atomic layer deposition device according to an exemplary embodiment of the present invention eliminates a gas flow control plate in a conventional lateral flow atomic layer deposition device and controls shapes of a gas input part and a gas output part in a reactor cover to make a gas flow path to a center of a substrate shorter than a gas flow path to an edge of the substrate and thereby increase the amount of gas per unit area flowing to the center of the substrate. Therefore, film thickness in the center of the substrate in the lateral flow reactor increases.
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.
摘要:
A deposition apparatus according to an exemplary embodiment of the present invention is a lateral-flow deposition apparatus in which in which a process gas flows between a surface where a substrate is disposed and the opposite surface, substantially in parallel with the substrate. The lateral-flow deposition apparatus includes: a substrate support that moves up/down and rotates the substrate while supporting the substrate; a reactor cover that defines a reaction chamber by contacting the substrate support; and a substrate support lifter and a substrate support rotator that move the substrate support.
摘要:
A deposition apparatus and deposition method for forming a film on a substrate are disclosed. A film is deposited on a substrate by exposing the substrate to different flow directions of reactant gases. In one embodiment, the substrate is rotated in the reaction chamber after a film having an intermediate thickness is formed on the substrate. In other embodiments, the substrate is transferred from one reaction chamber to another after a film having an intermediate thickness is formed on the substrate. Accordingly, a film having a uniform thickness is deposited, averaging out depletion effect.