摘要:
A capacitor, a semiconductor device and methods of fabricating the same are disclosed. The capacitor may include a lower electrode, a dielectric layer covering an upper surface of the lower electrode and having a width wider than that of the lower electrode and an upper electrode covering an upper surface and sides of the dielectric layer. The semiconductor device may include a lower insulating layer on a lower line, the capacitor according to example embodiments, the lower electrode on the lower insulating layer and an upper insulating layer on the lower insulating layer and encompassing the capacitor.
摘要:
A high power semiconductor device and its fabrication method in which source and the drain regions are spaced apart from and edge of a field oxide layer. This allows the junction profile to become gently-sloped so that the junction breakdown voltage is increased. Also, since the edge of the field oxide layer is covered by the field plate and a ground voltage or below the ground voltage is applied to the field plate, the distribution of the strong electric field formed at the edge of the field oxide layer is dispersed, to further increase the junction breakdown voltage. Moreover, since the field plate covers the field oxide layer at the side of the drain of the high power semiconductor device, when a high voltage is applied to the drain, the electric field distribution is dispersed, so that the junction breakdown voltage at the edge of the gate electrode at the side of the drain can be increased.
摘要:
A semiconductor device with having a MOS varactor and methods of fabricating the same are disclosed. The MOS varactor includes a metal gate electrode, an active semiconductor plate interposed between the metal gate electrode and the semiconductor substrate, and a capacitor dielectric layer interposed between the metal gate electrode and the active semiconductor plate. Further, a lower insulating layer insulates the MOS varactor from the semiconductor substrate. According to the present invention, a metal gate electrode is used to reduce poly depletion, thereby increasing a tuning range of the varactor, and to manufacture a reliable metal resistor without the need of an additional photomask.
摘要:
A semiconductor device with having a MOS varactor and methods of fabricating the same are disclosed. The MOS varactor includes a metal gate electrode, an active semiconductor plate interposed between the metal gate electrode and the semiconductor substrate, and a capacitor dielectric layer interposed between the metal gate electrode and the active semiconductor plate. Further, a lower insulating layer insulates the MOS varactor from the semiconductor substrate. According to the present invention, a metal gate electrode is used to reduce poly depletion, thereby increasing a tuning range of the varactor, and to manufacture a reliable metal resistor without the need of an additional photomask.
摘要:
A method to fabricate a high voltage transistor of a smart power device is discussed. The method includes forming a well of first conductivity in a substrate of second conductivity; forming a drift layer of the second conductivity in the well; forming a source region of the second conductivity in the well between a substrate/well junction and a well/drift layer junction; forming a drain region of the second conductivity in the drift layer, the drain region having relatively higher concentration of dopants relative to the drift layer; and forming a first field oxide layer on the drift layer such that the first field oxide layer is spaced apart from the drain region.
摘要:
A semiconductor device includes a gate on a substrate, a gate insulating layer along a sidewall and a bottom surface of the gate, and an L-shaped spacer structure on both sidewalls of the gate. A structure extends the distance between the gate and source/drain regions to either side of the gate.
摘要:
A semiconductor device with having a MOS varactor and methods of fabricating the same are disclosed. The MOS varactor includes a metal gate electrode, an active semiconductor plate interposed between the metal gate electrode and the semiconductor substrate, and a capacitor dielectric layer interposed between the metal gate electrode and the active semiconductor plate. Further, a lower insulating layer insulates the MOS varactor from the semiconductor substrate. According to the present invention, a metal gate electrode is used to reduce poly depletion, thereby increasing a tuning range of the varactor, and to manufacture a reliable metal resistor without the need of an additional photomask.