Abstract:
A semiconductor device such as a Zener diode includes a first semiconductor material of a first conductivity type and a second semiconductor material of a second conductivity type in contact with the first semiconductor material to form a junction therebetween. A first oxide layer is disposed over a portion of the second semiconductor material such that a remaining portion of the second semiconductor material is exposed. A polysilicon layer is disposed on the exposed portion of the second semiconductor material and a portion of the first oxide layer. A first conductive layer is disposed on the polysilicon layer. A second conductive layer is disposed on a surface of the first semiconductor material opposing a surface of the first semiconductor material in contact with the second semiconductor material.
Abstract:
Procédé de réalisation d'éléments semi-conducteurs à base de matériau semi-conducteur cristallin, comprenant des étapes consistant à : a) prévoir un support (10-11-12-15) comportant des éléments semi-conducteurs à base de matériau semi-conducteur amorphe, le support étant doté en outre d'un ou plusieurs composants (T 1 , T 2 ) et d'une zone de protection réfléchissante configurée de manière à réfléchir un rayonnement lumineux dans une gamme de longueur d'ondes donnée, b) exposer le ou les éléments (2) à un rayonnement laser (5) émettant dans ladite gamme de longueurs d'ondes donnée de manière à recristalliser lesdits éléments, la zone de protection réfléchissante étant agencée sur le support par rapport aux éléments et aux composants de manière à réfléchir le rayonnement laser et protéger les composants de ce rayonnement (figure 1).
Abstract:
Disclosed are an active layer ion implantation method and an active layer ion implantation method for thin-film transistor. The active layer ion implantation method comprises: applying a photoresist on the active layer; and implanting ions into the active layer through the photoresist.
Abstract:
A method of manufacturing a semiconductor device includes, forming an isolation region defining a first region and a second region, injecting a first impurity of a first conductivity type into the first region and the second region, forming a first gate insulating film and a first gate electrode over the first region, forming a second gate insulating film and a second gate electrode over the second region, forming a first mask layer over a first portion of the second region to expose a second portion of the second region and the first region, and injecting a second impurity of the first conductivity type into the semiconductor substrate from a direction diagonal to a surface of the semiconductor substrate.
Abstract:
Insulated-gate field-effect transistors (IGFETs), both symmetric and asymmetric, suitable for a semiconductor fabrication platform that provides IGFETs for analog and digital applications, including mixed-signal applications, utilize empty-well regions in achieving high performance. A relatively small amount of semiconductor well dopant is near the top of each empty well. Each IGFET (100, 102, 112, 114, 124, or 126) has a pair of source/drain zones laterally separated by a channel zone of body material of the empty well (180, 182, 192, 194, 204, or 206). A gate electrode overlies a gate dielectric layer above the channel zone. Each source/drain zone (240, 242, 280, 282, 520, 522, 550, 552, 720, 722, 752, or 752) has a main portion (240M, 242M, 280M, 282M, 520M, 522M, 550M, 552M, 720M, 722M, 752M, or 752M) and a more lightly doped lateral extension (240E, 242E, 280E, 282E, 520E, 522E, 550E, 552E, 720E, 722E, 752E, or 752E). Alternatively or additionally, a more heavily doped pocket portion (250 or 290) of the body material extends along one of the source/drain zones. When present, the pocket portion typically causes the IGFET to be an asymmetric device.
Abstract:
One aspect of the present invention relates to a method of forming a SONOS type non-volatile semiconductor memory device, involving forming a first layer of a charge trapping dielectric on a semiconductor substrate; forming a second layer of the charge trapping dielectric over the first layer of the charge trapping dielectric on the semiconductor substrate; optionally at least partially forming a third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate; optionally removing the third layer of the charge trapping dielectric; forming a source/drain mask over the charge trapping dielectric; implanting a source/drain implant through the charge trapping dielectric into the semiconductor substrate; optionally removing the third layer of the charge trapping dielectric; and one of forming the third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate, reforming the third layer of the charge trapping dielectric over the second layer of the charge trapping dielectric on the semiconductor substrate, or forming additional material over the third layer of the charge trapping dielectric.
Abstract:
A semiconductor device is provided which has insulating film side wall spacers having a barrier function. The semiconductor device comprises: a gate oxide film and a gate electrode formed on and above a semiconductor substrate; source/drain regions formed in the semiconductor substrate; and first laminated side wall spacers having two or more layers and formed on side walls of the gate electrode, the first laminated side wall spacers including a nitride film as a layer other than an outermost layer, the outermost layer being made of an oxide film or an oxynitride film and having a bottom surface contacting the semiconductor substrate, the gate oxide film or a side wall spacer layer other than the nitride film. The semiconductor device may further comprise second laminated side wall spacers having three or more layers and formed on side walls of a laminated gate electrode structure, the second laminated side wall spacers including a nitride film as an intermediate layer not contacting the semiconductor substrate. There is also provided the integration of a memory area and a logic area on the same substrate, the electrodes in both areas exhibiting side wall spacers as described above. A method for manufacturing such a device is also provided.
Abstract:
A semiconductor device is provided which has insulating film side wall spacers having a barrier function. The semiconductor device comprises: a gate oxide film and a gate electrode formed on and above a semiconductor substrate; source/drain regions formed in the semiconductor substrate; and first laminated side wall spacers having two or more layers and formed on side walls of the gate electrode, the first laminated side wall spacers including a nitride film as a layer other than an outermost layer, the outermost layer being made of an oxide film or an oxynitride film and having a bottom surface contacting the semiconductor substrate, the gate oxide film or a side wall spacer layer other than the nitride film. The semiconductor device may further comprise second laminated side wall spacers having three or more layers and formed on side walls of a laminated gate electrode structure, the second laminated side wall spacers including a nitride film as an intermediate layer not contacting the semiconductor substrate.