摘要:
A transcutaneous recharging system for providing power to an implantable medical device comprises a primary side circuit for transmitting power in the form of magnetic flux; and a secondary side circuit integral to the implantable medical device for receiving the power transmitted from the primary side circuit and for providing the received power to recharge a battery in the implantable medical device, wherein the primary and secondary side circuits are not physically coupled. A variety of attachment configurations are disclosed for attaching and shielding the secondary circuit directly onto the housing of the implantable medical device, inclusive of flexible printed circuit coils and wire coils recessed into helical notches.
摘要:
Disclosed herein is a flyback converter with a synchronous rectifier which is applied to a power supply of a portable computer such as a notebook PC. The flyback converter is operated in a critical conduction mode to turn on/off a main switch at a zero crossing point of an output voltage. The flyback converter is also adapted to supply a driving voltage to a synchronous switch using the output voltage. Therefore, there is no need for a secondary auxiliary coil of a transformer and for a Schottky diode to be connected in parallel with the synchronous switch, resulting in simplification in circuit design.
摘要:
The present invention relates to a method for providing an arbitrary sound chosen by a subscriber instead of a conventional RBT, more particularly, to a method for providing a caller with an arbitrary sound chosen by the caller instead of an RBT in case that a called is not a subscriber of a called-based RBT replacement service. The present method comprises: a first step, conducted by an exchanger when a call is received from a terminal, of requesting a first trunk connection to other telephone communication network while requesting a second trunk connection to a sound providing means if it is confirmed that the calling terminal has subscribed to RBT replacement service and the called terminal is a subscriber of said other telephone communication network; and a second step, conducted by the sound providing means, of providing the calling terminal with an RBT-replacing sound set for the calling terminal through the exchanger.
摘要:
An organic electro luminescence device and a fabrication method thereof are provided. An array element is formed on a first substrate and an electro luminescent diode is formed on a second substrate. The array element and the electro luminescent diode are electrically connected together by a spacer. A separator divides a sub pixel into a first region and a second region. In the electro luminescent diode, an anode electrode is formed over the first and second regions. An organic electro luminescent layer and a cathode electrode are formed on the anode electrode of one of the first and second regions.
摘要:
A nanocrystal electroluminescence device comprising a polymer hole transport layer, a nanocrystal light-emitting layer and an organic electron transport layer wherein the nanocrystal light-emitting layer is independently and separately formed between the polymer hole transport layer and the organic electron transport layer. According to the nanocrystal electroluminescence device, since the hole transport layer, the nanocrystal light-emitting layer and the electron transport layer are completely separated from one another, the electroluminescence device provides a pure nanocrystal luminescence spectrum having limited luminescence from other organic layers and substantially no influence by operational conditions, such as voltage. Further, a method for fabricating the nanocrystal electroluminescence device.
摘要:
Disclosed is a method of manufacturing a semiconductor device. The method comprises the steps of: preparing a silicon substrate having a predetermined lower structure including a gate and a bonding area; forming an interlayer dielectric film on the top side of the substrate; forming a photosensitive film pattern, which exposes an area for providing contact, on the interlayer dielectric film; forming a contact hole exposing a bonding area of the substrate by etching the exposed part of the interlayer dielectric film; removing the photosensitive film pattern; performing a dry cleaning on the exposed bonding area of the substrate so that CF based polymer formed in the etching step is removed; and performing a nitrogen-hydrogen plasma processing on the surface of the exposed bonding area of the substrate so that oxygen polymer and remaining CF-based polymer are removed. Therefore, since hydrogen plasma processing is performed after contact etching, ohmic contact characteristics can be secured. In addition, since the hydrogen plasma processing is performed using a conventional photosensitive film strip apparatus, cost required to install and maintain an additional apparatus is not generated.
摘要:
Disclosed herein is an apparatus for measuring the differential mode delay of multimode optical fiber. The apparatus includes a tunable laser source, an interferometer, a data collecting device, and a computer. The tunable laser source outputs light, frequencies of which vary linearly. The interferometer generates multimode light and single mode light by separating light, which is output from the tunable laser source, transmitting the multimode light and the single mode light to the multimode optical fiber, which is a measurement target, and a single mode path, which is a reference, and generating a beating signal by causing the multimode light and the single mode light to interfere with each other. The data collecting device collects the beating signal from the interferometer. The computer converts the frequency components of the beating signal into components in a time domain, and calculating the mode delay of the multimode light.
摘要:
Semiconductor nanocrystals surface-coordinated with a compound containing a photosensitive functional group, a photosensitive composition comprising semiconductor nanocrystals, and a method for forming semiconductor nanocrystal pattern by producing a film using the photosensitive semiconductor nanocrystals or the photosensitive composition, exposing the film to light and developing the exposed film, are provided. The semiconductor nanocrystal pattern exhibits luminescence characteristics comparable to the semiconductor nanocrystals before patterning and can be usefully applied to organic-inorganic hybrid electroluminescent devices.
摘要:
A method for preparing cadmium sulfide nanocrystals emitting light at multiple wavelengths. The method comprises the steps of (a) mixing a cadmium precursor and a dispersant in a solvent that weakly coordinates to the cadmium precursor, and heating the mixture to obtain a cadmium precursor solution, (b) dissolving a sulfur precursor in a solvent that weakly coordinates to the sulfur precursor to obtain a sulfur precursor solution, and (c) feeding the sulfur precursor solution to the heated cadmium precursor solution maintained at a high temperature to prepare cadmium sulfide crystals, and growing the cadmium sulfide crystals. Further, cadmium sulfide nanocrystals prepared by the method. The cadmium sulfide nanocrystals have uniform size and shape and can emit light close to white light simultaneously at different wavelengths upon excitation. Due to these characteristics, the cadmium sulfide nanocrystals can be applied to white light-emitting diode devices.
摘要:
In a method for forming a contact plug of a semiconductor device, epitaxial silicon is formed as contact material using a solid-phase epitaxy method. The method can obtain reduced contact resistance and improved refresh characteristics, compared with prior arts using polysilicon as contact material. Also, the method uses an SPE method, not a conventional SEG method, to form epitaxial silicon so that it can substantially reduce thermal budget through low-temperature processes. The method can also use conventional polysilicon deposition process without modification to form epitaxial silicon with ease and productivity.