摘要:
Provided is a sub-harmonic frequency mixer having a structure in which two terminals of transistors receiving a Radio Frequency (RF) signal and a Local Oscillation (LO) signal are coupled. The frequency mixer is composed of a single-level structure of transistors and thus can be driven at a lower supply voltage compared to a common frequency mixer. A direct-conversion receiver employing such a frequency mixer needs an RF signal and an LO signal sources of single-phase. Therefore, the direct-conversion receiver has an architecture that simplifies a whole RF transceiver circuit and thus can be advantageously applied in implementing SoC (System-on-Chip) for a low power, high integration, low price and subminiature wireless transceiver circuit.
摘要:
An apparatus for forming an alignment film and a method for fabricating a liquid crystal display panel using the same are disclosed. A steam inspecting unit for inspecting a defective alignment film is disposed for two lines of rubbing equipment, so that a facility investment expense can be reduced and a space of a clean room can be effectively utilized. The apparatus for forming an alignment film comprises a rubbing equipment comprising at least one rubbing unit; and an alignment film inspecting unit installed between the two lines of rubbing equipment and inspecting an alignment film formed on a substrate.
摘要:
A thin film transistor (TFT) and a method of fabricating the same, in which a fabrication process is simplified and damage to a gate insulating layer is decreased. The method of fabricating the TFT includes forming at least one buffer layer on a substrate, forming a first semiconductor layer formed on the buffer layer and a second semiconductor layer by depositing a semiconductor doped with a dopant on the first semiconductor layer, patterning the second semiconductor layer to form source and drain regions, forming a gate insulating layer on the source and drain regions, and forming a gate electrode on the gate insulating layer.
摘要:
Provided is a direct-conversion frequency mixer for down converting a radio frequency (RF) signal into a baseband signal, in which a single phase RF signal and a quadrature location oscillation (quadrature LO) signal are used to generate the baseband signal, the frequency mixer comprising a first frequency mixing unit that uses quadrature LO signals having respective phases of 0 degrees and 180 degrees to directly down-convert the single phase RF signal into the in-phase baseband signal, and a second frequency mixing unit that uses quadrature LO signals having respective phases of 90 degrees and 270 degrees to directly down-convert the single phase RF signal into the quadrature-phase baseband signal, whereby drains and sources of the transistor for receiving the quadrature LO signaland the transistor for receiving the RF signal are connected in common, thus enabling low power source voltage driving.
摘要:
Provided is directed to a delay locked loop control circuit capable of reducing a test time and preventing a yield from being reduced, by preventing a failure due to a charge sharing and a failure in a specific frequency and voltage due to a noise of a feedback clock, by means of including: a level setting unit for setting an initial level of a locked state signal, which is decided whether or not phases of a reference clock and a feedback clock are aligned; a signal generation unit for generating a third control signal according to a first control signal comparing phases of the reference clock and the feedback clock, and a second control signal checking out phases of the reference clock and the feedback clock in every predetermined time; a level maintaining unit for maintaining a level of the locked state signal according to the locked state signal and a fourth control signal comparing a signal delaying the feedback clock for a predetermined time with the reference clock; a detection unit for varying a level of the locked state signal by detecting whether or not phases of a reference clock and a feedback clock are aligned according to the first to third control signals; and a control unit for controlling a variation of the locked state signal by means of the detection unit according to the fourth control signal.
摘要:
An electroluminescent element and an electronic device including the electroluminescent element include a glass template having a silica layer as a matrix, electrodes and a luminescent material. Since the electroluminescent element according to the present invention includes silica as a matrix, the electroluminescent element has a stabilized structure even though a space between the luminescent layer and the electrode of the glass template is not filled. Further, such an electroluminescent element may be easily prepared, and thus may be effectively applied to various electronic devices, such as display devices, illumination devices and backlight units.
摘要:
A non-volatile memory device includes a buffer oxide film on a substrate; a polysilicon layer on the buffer oxide film; a silicon oxy-nitride (SiON) layer on the polysilicon layer, a first insulator layer on the SiON layer, a nitride film on the first insulator, a second insulator layer on the nitride film, an electrode on the second insulator, and a source/drain in the polysilicon layer.
摘要:
Nanowires methods for producing the nanowires are provided. The nanowires include a plurality of metal nanodots uniformly disposed therein, and a core portion, wherein each of the plurality of metal nanodots is coupled to the core portion. According to the method, metal nanodots can be uniformly disposed in the nanowires, and nanowires having various physical properties can be produced by controlling the size and interval of the nanodots. Therefore, the nanowires can be effectively used in a variety of applications, including electronic devices, such as field effect transistors (FETs), sensors, photodetectors, light emitting diodes (LEDs), and laser diodes (LDs).
摘要:
A light-emitting device including a semiconductor nanocrystal layer and a method for producing the light-emitting device are provided. The light-emitting device includes a semiconductor nanocrystal layer whose voids are filled with a filling material. According to the light-emitting device, since voids formed between nanocrystal particles of the semiconductor nanocrystal layer are filled with a filling material, the occurrence of a current leakage through the voids is minimized, which enables the device to have extended service life, high luminescence efficiency, and improved stability.
摘要:
An apparatus for inspecting an alignment film and a method for fabricating a liquid crystal display device using the same are disclosed. By changing a spraying structure of a steam inspecting unit to check whether an alignment film is defective or not, a water splash phenomenon can be prevented and spraying can be performed uniformly on a large-scale glass. The apparatus for inspecting an alignment film comprises a first steam generating unit for generating first steam; a second steam generating unit for generating second steam by using the first steam as a heat source; and a steam spraying unit for spraying the second steam onto a substrate of a substrate to inspect an alignment film formed on the substrate.