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 composite part program generator includes a computer-aided design (CAD) system interface, a path generator, a course head manager, a post-processor and a machine simulator. The composite part program generator produces composite part programs for use on a multihead composite material application machine, such as a composite tape lamination machine or an automated fiber placement (AFP) machine, to manufacture a complex composite parts, including relatively flat, contoured, or generally cylindrical composite parts. This programming method can reduce the labor and time required to produce a composite part program for a multihead composite material application machine by an order of magnitude with respect to manual or existing automated programming methods.
摘要:
Disclosed is a liquid crystal television container. The user automatically adjusts the height of a liquid crystal television using a lifting device when the user wants to watch the liquid crystal television. The liquid crystal television is accommodated in the liquid crystal television container such that the liquid crystal television is protected from external impact when the user is not watching the liquid crystal television. The liquid crystal television container is equipped with wheels so that the user freely moves the liquid crystal television container. The liquid crystal television container includes a gate formed at an upper portion of the liquid crystal television container in such a manner that the gate is opened when a liquid crystal television moves upward and is closed when the liquid crystal television has been accommodated in the liquid crystal television container, a door hingedly coupled to the gate in order to open or close the gate, a frame base for fixedly mounting the liquid crystal television thereon, a frame lifting device for moving the frame base up and down, a controller for controlling a height of the liquid crystal television such that the liquid crystal television mounted on the frame base is fixed to a desired position, a driving unit including a motor operated according to a control signal generated from the controller, and a sensor for detecting a power-on signal of the liquid crystal television as power is applied to the liquid crystal television.
摘要:
A complementary metal-oxide semiconductor (CMOS) image sensor and a method for fabricating the same are disclosed. The image sensor includes a sub-layer having a photodiode and a plurality of transistors formed thereon, a pad insulating layer formed on the sub-layer, a micro-lens formed on the pad insulating layer, the micro-lens including a first insulating layer having an uneven surface and a second insulating layer covering upper and side surfaces of a projected portion of the first insulating layer to form a dome shape, and a planarization layer formed on the micro-lens, and a color filter formed on the planarization layer.
摘要:
A semiconductor device is provided. A fuse guard ring is patterned to prevent a crack phenomenon generated in the fuse guard ring formed surrounding a fuse of the semiconductor device, thereby relieving stress applied to the fuse guard ring and preventing damage of the fuse to improve characteristics and reliability of the semiconductor device.
摘要:
A display device includes a pixel circuit unit comprising a plurality of pixels to display an image, a data driver to supply data signals to the pixel circuit unit, a scan driver to supply scan signals to the pixel circuit unit, a black/white transition detector to detect a degree of black/white transition of the image, a gamma corrector to adjust the data signal by providing a gamma value to the data driver, and a timing controller to apply control signals to the data driver and the scan driver, receive the degree of black/white transition from the black/white transition detector, and provide a corrected gamma control signal to the gamma corrector according to the degree of black/white transition.
摘要:
Disclosed herein is an ink cartridge refill system for inkjet printers and a method of refilling ink cartridges using the system. The refill system includes a vacuum pump to supply ink from an ink tank into a cylinder and to forcibly draw ink from an ink cartridge, as well as an air compression pump to generate a compression force to inject ink from the cylinder into the ink cartridge through the nozzle of the cartridge. The cylinder is connected at the inlet end thereof to both the air compression pump and the vacuum pump, and is connected at the outlet end to both the ink tank and the ink cartridge. Both a compression pump line and a first vacuum pump line which pass through the cylinder are connected to the nozzle of the cartridge through an ink supply hose. The vacuum pump includes a second vacuum pump line directly connected to the ink cartridge, as is the first vacuum pump line passing through the cylinder. Both the ink supply hose and the second vacuum pump line are connected to the nozzle of the cartridge through a connection unit. The refill system can regulate the inner pressure of a refilled cartridge by removing predetermined small amounts of air and ink from the refilled cartridge, and can completely remove waste ink from the cartridge at the initial stage of a cartridge refill process when necessary.
摘要:
A single mode distributed feedback laser for producing a single mode light comprises a semiconductor substrate; a lower clad positioned on the semiconductor substrate and having a plurality of gratings that are arranged to be spaced apart at regular periods from one another; a waveguide grown on the lower clad to oscillate the light, the waveguide being formed to be curved in a direction perpendicular to a direction in which the gratings are arranged; an upper clad grown on the waveguide; and upper and lower electrodes.
摘要:
In a method for fabricating a CMOS image sensor, microlenses are formed with a silicon nitride layer formed on a pad such that it is possible to decrease a height of microlens and to improve a refraction ratio. In addition to main lenses in shape of curved surface, inner lenses are formed in shape of a sidewall spacer by etching oxide and nitride layers at a high etching selection ratio.
摘要:
Provided is a PNA (Peptide Nucleic Acid) chip in which a probe PNA containing a desired DNA sequence is immobilized on a plastic substrate coated with an epoxy group-containing polymer. Therefore, single-stranded PNAs can be immobilized on a transparent plastic substrate by means of an epoxy group-containing polymer layer in an efficient and cost-effective manner. Fluorescence signal detection based on PNA/DNA hybridization enables identification of SNP (Single Nucleotide Polymorphism).