摘要:
A driving apparatus and a driving method for an electron emission device include a polarity operator for receiving an external video data signal and a horizontal synchronization signal, and generating a polarity control signal in response to the horizontal synchronization signal. The apparatus further includes a data inverter for selectively inverting video data output from the polarity operator, a serial-parallel converter for converting video data output from the data inverter into parallel data, a pulse width modulator for modulating a pulse width of the parallel data output from the serial-parallel converter, and a polarity controller for selectively inverting a signal output from the pulse width modulator.
摘要:
Semiconductor memory devices include a semiconductor substrate and a plurality of semiconductor material pillars in a spaced relationship on the semiconductor substrate. Respective surrounding gate electrodes surround ones of the pillars. A first source/drain region is in the semiconductor substrate between adjacent ones of the pillars and a second source/drain region is in an upper portion of at least one of the adjacent pillars. A buried bit line is in the first source/drain region and electrically coupled to the first source/drain region and a storage node electrode is on the upper portion of the at least one of the adjacent pillars and electrically contacting with the second source/drain region.
摘要:
A semiconductor device may include a tubular channel pattern vertically extending from a semiconductor substrate. A gate insulation layer may be provided on faces exposed through the channel pattern. A gate electrode may be provided on the gate insulation layer. The gate electrode may fill the channel pattern. A conductive region, which may serve as lower source/drain regions, may be formed at a surface portion of the semiconductor substrate. The conductive region may contact a lower portion of the channel pattern. A conductive pattern, which may serve as upper source/drain regions, may horizontally extend from an upper portion of the channel pattern.
摘要:
A polycrystalline semiconductor layer is formed on a cell active region and a peripheral active region of a substrate. A buried gate electrode is formed in the substrate in the cell active region at a level below the polycrystalline semiconductor layer after forming the polycrystalline semiconductor layer. A gate electrode is formed on the substrate in the peripheral active region from the polysilicon semiconductor layer after forming the buried gate electrode.
摘要:
Semiconductor memory devices include a semiconductor substrate and a plurality of semiconductor material pillars in a spaced relationship on the semiconductor substrate. Respective surrounding gate electrodes surround ones of the pillars. A first source/drain region is in the semiconductor substrate between adjacent ones of the pillars and a second source/drain region is in an upper portion of at least one of the adjacent pillars. A buried bit line is in the first source/drain region and electrically coupled to the first source/drain region and a storage node electrode is on the upper portion of the at least one of the adjacent pillars and electrically contacting with the second source/drain region.
摘要:
A dynamic random access memory (DRAM) device may include: a semiconductor substrate including an active fin, an active region, and an isolation layer; one or more cell gate structures on a central portion of the active fin; one or more dummy gate structures on a peripheral portion of the active fin; one or more source/drain regions at an upper portion of the active fin adjacent to the one or more cell gate structures; a first insulating interlayer on the semiconductor substrate; a bit line structure electrically connected to the at least one source region; a second insulating interlayer on the first insulating interlayer; one or more capacitors electrically connected to the at least one drain region; a third insulating interlayer on the second insulating interlayer; and a wire connected to the active region and at least one of the one or more dummy gate structures.
摘要:
A plasma display panel adapted to minimize noise/vibration as well as a heat generated therefrom. In the plasma display panel, a display panel displays a picture while a porous pad is provided behind the display panel to prevent the transfer of noise/vibration to an associated heat proof panel. When the PDP is mounted within a case, a second porous pad can be provided on an inner surface of the case opposite the display panel and adjacent to an associated printed circuit board for additional noise/vibration damping.
摘要:
Disclosed are a hydrothermally stable porous molecular sieve catalyst and a preparation method thereof. The catalyst consists of a product obtained by the evaporation of water from a raw material mixture comprising a molecular sieve having a framework of Si—OH—Al—, a water-insoluble metal salt and a phosphate compound. The catalyst maintains its physical and chemical stabilities even in an atmosphere of high temperature and humidity. Accordingly, the catalyst shows excellent catalytic activity even when it is used in a severe process environment of high temperature and humidity in heterogeneous catalytic reactions, such as various oxidation/reduction reactions, including catalytic cracking reactions, isomerization reactions, alkylation reactions and esterification reactions.