摘要:
A silicon nitrate layer (110) is formed over a transistor gate (40) and source and drain regions (70). The as-formed silicon nitride layer (110) comprises a first tensile stress and a high hydrogen concentration. The as-formed silicon nitride layer (110) is thermally annealed converting the first tensile stress into a second tensile stress that is larger than the first tensile stress. Following the thermal anneal, the hydrogen concentration in the silicon nitride layer (110) is greater than 12 atomic percent.
摘要:
Methods of forming non-volatile memory cell structures are described that facilitate the use of band-gap engineered gate stacks with asymmetric tunnel barriers in reverse and normal mode floating node memory cells that allow for direct tunnel programming and erase, while maintaining high charge blocking barriers and deep carrier trapping sites for good charge retention. The low voltage direct tunneling program and erase capability reduces damage to the gate stack and the crystal lattice from high energy carriers, reducing write fatigue and enhancing device lifespan. The low voltage direct tunnel program and erase capability also enables size reduction through low voltage design and further device feature scaling. Such memory cells also allow multiple bit storage. These characteristics allow such memory cells to operate within the definition of a universal memory, capable of replacing both DRAM and ROM in a system.
摘要:
A virtual ground array structure uses inversion bit lines in order to eliminate the need for implanted bit lines. As a result, the cell size can be reduced, which can provide greater densities and smaller packaging.
摘要:
The invention is directed to a method for forming a memory array. The method comprises steps of providing a substrate having a charge trapping structure formed thereon. A patterned material layer is formed over the substrate and the patterned material layer having a plurality of trenches expose a portion of the charge trapping structure. Furthermore, a plurality of conductive spacers are formed on the sidewalls of the trenches of the patterned material layer respectively and a portion of the charge trapping structure at the bottom of the trenches is exposed by the conductive spacers. An insulating layer is formed over the substrate to fill up the trenches of the patterned material layer. Moreover, a planarization process is performed to remove a portion of the insulating layer until a top surface of the patterned material layer and a top surface of each of the conductive spacers are exposed.
摘要:
Disclosed is a method of manufacturing a semiconductor device. The method includes forming an oxide-nitride-oxide (ONO) layer over a semiconductor substrate, and forming a recess over the semiconductor substrate by etching the ONO layer, forming a vertical structure pattern being higher than the ONO layer over the recess, sequentially forming a spacer oxide film and a first gate poly over the side wall of the vertical structure pattern, and forming a nitride film spacer at a partial region of the side wall of the first gate poly, removing the nitride film spacer, and forming a second gate poly in a spacer shape over the side wall of the first gate poly, and forming a first split gate and a second split gate, symmetrically divided from each other, by removing the vertical structure pattern.
摘要:
Non-volatile memory devices and arrays are described that facilitate the use of band-gap engineered gate stacks with asymmetric tunnel barriers in reverse and normal mode floating node memory cells in NOR or NAND memory architectures that allow for direct tunnel programming and erase, while maintaining high charge blocking barriers and deep carrier trapping sites for good charge retention. The low voltage direct tunneling program and erase capability reduces damage to the gate stack and the crystal lattice from high energy carriers, reducing write fatigue and enhancing device lifespan. The low voltage direct tunnel program and erase capability also enables size reduction through low voltage design and further device feature scaling. Memory cells of the present invention also allow multiple bit storage. These characteristics allow memory device embodiments of the present invention to operate within the definition of a universal memory, capable of replacing both DRAM and ROM in a system.
摘要:
Forming salicide in a semiconductor device includes the steps of: forming a first and a second gate oxide film and in a non-salicide region and a salicide region, the first gate oxide film being thicker than the second gate oxide film; forming a conductive layer and a nitride based hard mask layer, and then selectively removing the conductive layer, the hard mask layer, the first gate oxide film, and the second gate oxide film, thereby forming gate electrodes and simultaneously exposing an active region of the salicide region; forming a spacer oxide film on an upper surface, except for the hard mask layer, of a second resultant structure; selectively removing the spacer oxide film, thereby forming a spacer and simultaneously exposing the active region of the salicide region; removing the hard mask layer; and forming a salicide film on the upper surfaces of the gate electrodes and on the surface of the active region in the salicide region. Therefore, a non-salicide region and a salicide region can be formed selectively and simultaneously in a one-chip semiconductor device, so that the number of steps for a salicide forming process can be reduced.
摘要:
A virtual ground array structure uses inversion bit lines in order to eliminate the need for implanted bit lines. As a result, the cell size can be reduced, which can provide greater densities and smaller packaging.
摘要:
A virtual ground array structure uses inversion bit lines in order to eliminate the need for implanted bit lines. As a result, the cell size can be reduced, which can provide greater densities and smaller packaging.
摘要:
An organic semiconductor device includes a substrate, a gate electrode formed directly on the substrate , gate insulating film formed directly on the gate electrode, a source electrode and a drain electrode formed directly on the gate insulating film, an organic semiconductor layer formed directly on the source electrode and the drain electrode, and a voltage control layer disposed directly between the gate insulating film and the organic semiconductor layer and directly contacting the source electrode and the drain electrode, wherein the voltage control layer gives an ambipolar characteristic to the organic semiconductor layer.