摘要:
In one implementation, a method of forming a field effect transistor includes etching an opening into source/drain area of a semiconductor substrate. The opening has a base comprising semiconductive material. After the etching, insulative material is formed within the opening over the semiconductive material base. The insulative material less than completely fills the opening and has a substantially uniform thickness across the opening. Semiconductive source/drain material is formed within the opening over the insulative material within the opening. A transistor gate is provided operatively proximate the semiconductive source/drain material. Other aspects and implementations are contemplated.
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:
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:
Variable-resistance material memories include a buried salicide word line disposed below a diode. Variable-resistance material memories include a metal spacer spaced apart and next to the diode. Processes include the formation of one of the buried salicide word line and the metal spacer. Devices include the variable-resistance material memories and one of the buried salicided word line and the spacer word line.
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:
In one implementation, a method of forming a field effect transistor includes etching an opening into source/drain area of a semiconductor substrate. The opening has a base comprising semiconductive material. After the etching, insulative material is formed within the opening over the semiconductive material base. The insulative material less than completely fills the opening and has a substantially uniform thickness across the opening. Semiconductive source/drain material is formed within the opening over the insulative material within the opening. A transistor gate is provided operatively proximate the semiconductive source/drain material. Other aspects and implementations are contemplated.
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:
Some embodiments include apparatus and methods having a memory element configured to store information and an access component configured to allow conduction of current through the memory element when a first voltage difference in a first direction across the memory element and the access component exceeds a first voltage value and to prevent conduction of current through the memory element when a second voltage difference in a second direction across the memory element and the access component exceeds a second voltage value, wherein the access component includes a material excluding silicon.