Abstract: A transistor includes a trench formed in a semiconductor substrate with the trench having a first sidewall and a second sidewall. A vertical field plate is formed in the trench. The vertical field plate is located between the first sidewall and the second sidewall. A gate electrode is formed in the trench with a first edge of the gate electrode proximate to the first sidewall and a second edge of the gate electrode proximate to the vertical field plate. A dielectric material is formed in the trench between the first sidewall and the vertical field plate. An air cavity is formed in the trench between the vertical field plate and the second sidewall with the air cavity having a dielectric constant lower than that of the dielectric material.

Abstract: An example laterally diffused metal oxide semiconducting (LDMOS) device includes a semiconductor substrate of a first conductivity type, active MOS regions, and a lightly-doped isolation layer (LDIL) of a second conductivity type. The active MOS regions include source and drain regions and a plurality of PN junctions. The LDIL is formed above and laterally along the semiconductor substrate, and located between the semiconductor substrate and at least a part of the active MOS regions. The LDIL is doped with dopant of the second conductivity type to cause, in response to selected voltages applied to the LDMOS device, the plurality of PN junctions to deplete each other and to support a voltage drop between the source and drain regions along the LDIL.

Abstract: The invention provides a novel polyherbal composition useful for treating acute Hepatitis E virus infection including acute liver failure due to HEV infection, healthy Hepatitis B virus carriers who develop superadded hepatitis E virus infection, acute hepatitis B virus infection, and animal hepadna virus, therapeutic effects on hepatitis B virus infection and also used as a hepatoprotective agent, said composition comprising essentially extracts of plants Rheum emodi Wall., Phyllanthus amarus Linn., Eclipta alba Hassk., Andrographis paniculate Nees., and Picrorhiza kurroa Royle ex Benth., and optionally Fumaria officinalis, Tinospora cordifolia Miers., Terminalia chebula Retz., Cichorium intybus Linn., Tephrosea purpurea Linn. and Boerhaavia diffusa Linn.