摘要:
A method of creating ultra-small nibble structures using a modification of an already existing mask includes the steps of depositing a layer of nitride on a circuit being fabricated according to standard MOSFET process steps. A layer of photoresist is patterned using a modification of an existing mask, such as a contact mask modified to include a nibble pattern. The nitride layer and an underlying oxide layer are removed according to the patterned photoresist to create a contact opening and an opening over the field oxide. Spacers may be created in the opening over the field oxide. A conductive layer and a polysilicon layer exposed in the opening over the field oxide are removed extending the opening down to the field oxide to create a nibble structure in the polysilicon layer.
摘要:
A retrograde well region, having a buried layer of high conductivity, is formed in a semiconductor substrate. A trench structure is selectively etched in the semiconductor substrate down to a region proximate to or within the buried layer. A conducting local interconnect material is formed within and proximate to the trench structure to electrically connect surface portions of the substrate to the buried layer. The buried layer is used to provide a voltage source to an integrated circuit. In one application, a P-type buried layer provides ground potential or V.sub.SS to a source region of an N-channel FET transistor. In a second application, an N-type buried layer provides supply potential or V.sub.CC to a source of a P-channel FET transistor.
摘要:
A method of creating ultra-small nibble structures using a modification of an already existing mask is comprised of the steps of depositing a layer of nitride on a circuit being fabricated according to standard MOSFET process steps. A layer of photoresist is patterned using a modification of an existing mask, such as a contact mask modified to include a nibble pattern. The nitride layer and an underlying oxide layer are removed according to the patterned photoresist to create a contact opening and an opening over the field oxide. Spacers may be created in the opening over the field oxide. A conductive layer and a polysilicon layer exposed in the opening over the field oxide are removed extending the opening down to the field oxide to create a nibble structure in the polysilicon layer.
摘要:
A method of forming a guard ring for a Schottky diode is comprised of the steps of forming anode and cathode contact openings. A layer of doped material is deposited and etched to create spacers in the anode and cathode openings. The outdiffusion of dopant from the spacers is controlled to form a guard ring in the well without affecting the active area. The method can be used to create a p-type guard ring in an n-well or an n-type guard ring in a p-well. A Schottky diode constructed according to the method is also disclosed.
摘要:
A retrograde well region, having a buried layer of high conductivity, is formed in a semiconductor substrate. A trench structure is selectively etched in the semiconductor substrate down to a region proximate to or within the buried layer. A conducting local interconnect material is formed within and proximate to the trench structure to electrically connect surface portions of the substrate to the buried layer. The buried layer is used to provide a voltage source to an integrated circuit. In one application, a P-type buried layer provides ground potential or VSS to a source region of an N-channel FET transistor. In a second application, an N-type buried layer provides supply potential or VCC to a source of a P-channel FET transistor.
摘要翻译:在半导体衬底中形成具有高导电性掩埋层的逆行阱区。 沟槽结构在半导体衬底中被选择性地蚀刻到靠近或在掩埋层内的区域。 导电性局部互连材料形成在沟槽结构内部和附近,以将衬底的表面部分电连接到掩埋层。 掩埋层用于向集成电路提供电压源。 在一个应用中,P型掩埋层向N沟道FET晶体管的源极区提供接地电位或V SS。 在第二个应用中,N型掩埋层向P沟道FET晶体管的源极提供电源电位或V CC CC。
摘要:
Semiconductor processing methods, semiconductor processing methods of forming diodes, and semiconductor processing methods of forming Schottky diodes are described. In one embodiment, a first layer of material is formed over a substrate. A second layer of material is formed over the first layer of material. An opening is formed to extend through the first and second layers sufficient to expose a portion of the substrate. An angled ion implant is conducted through the opening and into the substrate. After the conducting of the angled ion implant, the second layer of material is removed. In another embodiment, a diode opening is formed in a layer of material over a semiconductive substrate. In another embodiment, a Schottky diode is formed by forming an opening in a layer of material which is formed over a semiconductive substrate, wherein the opening exposes a substrate portion. An angled ion implant is conducted through the opening and into the semiconductive substrate. A conductive layer of material, e.g. a silicide, is formed within the opening. In another embodiment, a Schottky diode is formed by conducting an angled ion implant of impurity into a semiconductive substrate sufficient to form an impurity ring which is received within the substrate. A conductive Schottky material layer is formed proximate the impurity ring.
摘要:
A phase change memory cell and methods of fabricating the same are presented. The memory cell includes a variable resistance region and a top and bottom electrode. The shapes of the variable resistance region and the top electrode are configured to evenly distribute a current with a generally hemispherical current density distribution around the first electrode.
摘要:
Memory devices having memory cells comprising variable resistance material include an electrode comprising a single nanowire. Various methods may be used to form such memory devices, and such methods may comprise establishing contact between one end of a single nanowire and a volume of variable resistance material in a memory cell. Electronic systems include such memory devices.
摘要:
Memory devices and methods of making memory devices are shown. Methods and configurations as shown provide folded and vertical memory devices for increased memory density. Methods provided reduce a need for manufacturing methods such as deep dopant implants.
摘要:
Memory devices having memory cells comprising variable resistance material include an electrode comprising a single nanowire. Various methods may be used to form such memory devices, and such methods may comprise establishing contact between one end of a single nanowire and a volume of variable resistance material in a memory cell. Electronic systems include such memory devices.