摘要:
Phase change memories may exhibit improved properties and lower cost in some cases by forming the phase change material layers in a planar configuration. A heater may be provided below the phase change material layers to appropriately heat the material to induce the phase changes. The heater may be coupled to an appropriate conductor.
摘要:
A field effect transistor on an active region of a semiconductor substrate includes a vertically protruding thin-body portion of the semiconductor substrate and a vertically oriented gate electrode at least partially inside a cavity defined by opposing sidewalls of the vertically protruding portion of the substrate. The transistor further includes an insulating layer surrounding an upper portion of the vertically oriented gate electrode and a laterally oriented gate electrode on the insulating layer and connected to a top portion of the vertically oriented gate electrode. Accordingly, a T-shaped gate electrode is defined having a lateral portion on a top surface of a semiconductor substrate and having a vertical portion at least partially inside a cavity defined by opposing sidewalls of a vertically protruding portion of the substrate.
摘要:
Integrated circuitry having adjacent electrically isolated field effect transistors is disclosed and which includes a bulk semiconductor substrate; an electrically insulative device isolation mass located on the substrate and positioned between opposing active area regions; a first pair of LDD diffusion regions associated with the active area and abutting against the electrically insulative device isolation mass; a pair of field effect transistors each being received within one active area; a second paid of LDD diffusion regions associated with the active area and abutting against each field effect transistor; and a pair of electrically conductive transistor source and drain diffusion regions which are respectively spaced from the insulative isolation mass and field effect transistor.