摘要:
A PMA (Permanent Magnet Assisted) synRM and a method for imposing a magnetic force thereon. Magnets are inserted into outer flux barriers of a plurality of flux barriers formed along the radius of a rotor, and bridges or slim portions are formed on inner flux barriers at positions corresponding to the positions of the magnets so that the magnetic force is imposed on the magnets through coils. Since the number of the flux barriers is sufficiently increased while the amount of the magnets consumed is decreased, the PMA synRM has increased efficiency and reduced production costs.
摘要:
A sensorless motor drive apparatus and a method for protecting and controlling the same. The sensorless motor drive apparatus includes a unit for determining the presence or absence of a position estimation error of a rotor contained in a motor using a current value applied to the motor and a position estimation angle of the rotor. Therefore, the sensorless motor drive apparatus determines the presence or absence of the position estimation error of the rotor without using a sensor, so that it reduces production costs, prevents the motor from generating a faulty operation, and prevents a compressor including the motor from being damaged.
摘要:
An apparatus and method determine a start-up of a sensorless motor. The apparatus includes an elapsed time determination unit, a motor velocity determination unit and an abnormal start-up determination unit. The elapsed time determination unit determines whether a predetermined time has elapsed after a start-up of the motor is initiated. The motor velocity determination unit determines whether a velocity of the motor exceeds a predetermined velocity value when the predetermined time has elapsed. The abnormal start-up determination unit determines that the motor was abnormally started up when the velocity of the motor does not exceed the predetermined value, and an amount of current flowing in the motor does not exceed a predetermined current value.
摘要:
A method for forming a pattern and a method for fabricating an LCD device using the same is disclosed, wherein a photoresist layer is removed from a substrate without using a photoresist stripper, so that the pattern is formed with a low fabrication costs. The method comprising sequentially forming a pattern material layer, a transformed material layer and a photoresist layer on a substrate; patterning the photoresist layer by exposure and development using a mask; selectively etching the transformed material layer and the pattern material layer by using the patterned photoresist layer as a mask; and removing the transformed material layer and the patterned photoresist layer in a lift-off method by applying light.
摘要:
Disclosed is an electrolyte comprising a eutectic mixture formed of: (a) an amide group-containing compound; and (b) a lithum-free ionizable salt. An electrochemical device comprising the electrolyte is also disclosed. The electrolyte improves the quality of and electrochemical device due to the excellent conductivity of the metal cation contained in the eutectic mixture, a broad electrochemical window and low viscosity. Additionally, since the eutectic mixture has excellent thermal and chemical stability, it is possible to solve the problems of evaporation, exhaustion and ignition of electrolytes, to minimize side reactions between constitutional elements of the device and the electrolyte, and to improve the safety of the electrochemical device.
摘要:
A thin film transistor device for a liquid crystal display, as embodied, includes a gate electrode on a transparent insulating substrate; a gate insulating film formed of a first glass composition covering the gate electrode; a semiconductor layer on the gate insulating film; and a source electrode and a drain electrode on the semiconductor layer.
摘要:
A flat panel display includes a substrate, an array on the substrate, and a glass film formed by depositing glass powder over the substrate, including the array, melting the deposited glass powder over the array and hardening the deposited glass powder over the array.
摘要:
Disclosed is an electrolyte for electrochromic devices, which includes a eutectic mixture comprising: (a) a compound having an acidic functional group and basic functional group; and (b) an ionizable lithium salt. An electrochromic device using the same electrolyte is also disclosed. Because the electrochromic device uses the electrolyte comprising the eutectic mixture, which is cost-efficient and has excellent thermal and chemical stability, there are no problems related with evaporation and exhaustion as well as flammability of electrolyte. Additionally, it is possible to minimize side reactions with constitutional elements of an electrochromic device and electrolyte, thereby improving the safety. Further, it is also possible to improve the quality of an electrochromic device by virtue of a broad electrochemical window and high electroconductivity of the eutectic mixture.
摘要:
A liquid crystal display device includes a data line, a source electrode, a drain electrode, and a pixel electrode disposed on a lower substrate, an island-shaped semiconductor layer overlapping the source and drain electrodes, a gate insulating layer along an entire surface of the lower substrate including the semiconductor layer, a gate line and a gate electrode on the gate insulating layer, a passivation layer along an entire surface of the lower substrate including the gate line, an upper substrate facing the lower substrate, and a liquid crystal layer between the lower and upper substrates.
摘要:
An array substrate for an LCD device and a manufacturing method thereof. The array substrate includes: a gate line, a gate electrode, a gate pad, and a pixel electrode formed on the substrate; a gate insulation layer formed on the substrate to expose the gate line and the pixel electrode; a source electrode connected to a data line crossing the gate line, a drain electrode facing the source electrode with a channel interposed, a data pad formed at one end of the data line, and a capacitor electrode overlapping portions of the pixel electrode and the gate line; a semiconductor layer constituting the channel between the source electrode and the drain electrode; first, second, third, and fourth contact holes formed in the gate pad, the data pad, the capacitor electrode, and the drain electrode, respectively; and first through fourth contact electrodes formed in the first through fourth contact holes, respectively.