摘要:
In one embodiment, a floating body field-effect transistor includes a pair of source/drain regions having a floating body channel region received therebetween. The source/drain regions and the floating body channel region are received over an insulator. A gate electrode is proximate the floating body channel region. A gate dielectric is received between the gate electrode and the floating body channel region. The floating body channel region has a semiconductor SixGe(1-x)-comprising region. The floating body channel region has a semiconductor silicon-comprising region received between the semiconductor SixGe(1-x)-comprising region and the gate dielectric. The semiconductor SixGe(1-x)-comprising region has greater quantity of Ge than any quantity of Ge within the semiconductor silicon-comprising region. Other embodiments are contemplated, including methods of forming floating body field-effect transistors.
摘要:
3D memory devices are disclosed, such as those that include multiple two-dimensional tiers of memory cells. Each tier may be fully or partially formed over a previous tier to form a memory device having two or more tiers. Each tier may include strings of memory cells where each of the strings are coupled between a source select gate and a drain select gate such that each tier is decoded using the source/drain select gates. Additionally, the device can include a wordline decoder for each tier that is only coupled to the wordlines for that tier.
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:
Some embodiments include apparatus and methods having a memory cell with a first electrode and a second electrode, and a memory element directly contacting the first and second electrodes. The memory element may include a programmable portion having a material configured to change between multiple phases. The programmable portion may be isolated from the first electrode by a first portion of the memory element and isolated from the second electrode by a second portion of the memory element.
摘要:
Some embodiments include apparatus and methods having a memory device with diodes coupled to memory elements. Each diode may be formed in a recess of the memory device. The recess may have a polygonal sidewall. The diode may include a first material of a first conductivity type (e.g., n-type) and a second material of a second conductive type (e.g., p-type) formed within the recess.
摘要:
A process for making a local interconnect and the structures formed thereby. The process is practiced by forming a Ti layer having a nitrogen-rich upper portion over a portion of a substrate, forming a refractory metal layer on the Ti layer, forming a Si layer on the refractory metal layer, removing a portion of the Si layer, and heating to form a local interconnect structure. During this process, a source structure for the local interconnect is formed. This source structure comprises a Ti layer having a nitrogen-rich upper portion overlying a portion of a substrate, a refractory metal layer overlying the Ti layer, and a silicon layer overlying the refractory metal layer. The resulting local interconnect comprises a titanium silicide layer disposed on a portion of a substrate, a nitrogen-rich Ti layer disposed on the titanium silicide layer, and a refractory metal silicide layer disposed on the nitrogen-rich Ti layer. The local interconnect is especially useful for reducing cratering and consumption of silicon regions underlying the local interconnect.
摘要:
A static random access memory cell comprising a first inverter including a first p-channel pullup transistor, and a first n-channel pulldown transistor in series with the first p-channel pullup transistor; a second inverter including a second p-channel pullup transistor, and a second n-channel pulldown transistor in series with the second n-channel pullup transistor, the first inverter being cross-coupled with the second inverter, the first and second pullup transistors sharing a common active area; a first access transistor having an active terminal connected to the first inverter; a second access transistor having an active terminal connected to the second inverter; and an isolator isolating the first pullup transistor from the second pullup transistor.
摘要:
In accordance with an aspect of the invention, a twin-well method of forming CMOS integrated circuitry having first and second conductivity type gates includes conducting a first conductivity type well implant, a second conductivity type well implant, a first conductivity type gate implant and a second conductivity type gate implant using no more than two masking steps. In another aspect of the invention, a twin well method of forming CMOS integrated circuitry having first and second conductivity type transistor gates includes conducting a first conductivity type well implant and a second conductivity type gate implant in a common masking step.
摘要:
In one implementation, a substrate is provided which has at least two nodes to be electrically connected. A first conductivity type semiconductive material is formed over and in electrical connection with one of the nodes. A conductive diffusion barrier material is formed over and in electrical connection with the first conductivity type semiconductive material. A second conductivity type semiconductive material is formed over and in electrical connection with the first conductivity type semiconductive material through the conductive diffusion barrier material, and over and in electrical connection with another of the nodes. The first conductivity type semiconductive material, the conductive diffusion barrier material and the second conductivity type semiconductive material are formed into a local interconnect electrically connecting the one node and the another node. Local interconnects fabricated by this and other methods are also contemplated. The invention includes in one implementation a method of forming contact plugs.
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.