Abstract:
A integrated circuit device and method for manufacturing an integrated circuit device includes forming a patterned gate stack, adjacent a storage device, to include a storage node diffusion region adjacent the storage device and a bitline contact diffusion region opposite the storage node diffusion region, implanting an impurity in the storage node diffusion region and the bitline contact diffusion region, forming an insulator layer over the patterned gate stack, removing a portion of the insulator layer from the bitline contact diffusion region to form sidewall spacers along a portion of the patterned gate stack adjacent the bitline contact diffusion region, implanting a halo implant into the bitline contact diffusion region, wherein the insulator layer is free from blocking the halo implant from the second diffusion region and annealing the integrated circuit device to drive the halo implant ahead of the impurity.
Abstract:
Improved transistor array device performance is obtained by use of bias voltage regulation which tracks with a fraction of a monitor transistor threshold voltage. The circuitry and methods are especially useful for improving the performance of transistor array devices such as DRAM and embedded DRAM. These benefits are obtained especially when at least two bias voltages normally supplied to the array are regulated by tracking with a fraction of an actual threshold voltage of at least one monitor transistor. Performance improvements include improved reliability, wider operational bias conditions, reduced power consumption and (in the case of memory cells) improved retention time.
Abstract:
PROBLEM TO BE SOLVED: To provide a structure and manufacturing method of a notch gate field effect transistor which can cope with a problem of device (element) reliability. SOLUTION: A gate dielectric 14 (for example, gate oxide film) is preferably formed on a surface of an active field 10 on a semiconductor substrate defined by a separation trench area 12. Next, a polysilicon layer 16 is accumulated on the gate dielectric. After the above process, a silicon germanium (SiGe) layer 18 is accumulated. Next, a side wall of the polysilicon layer is selectively etched in the transverse direction against the SiGe layer, and a notch gate conductor structure having the SiGe layer wider than the polysilicon layer thereunder is formed. A side wall spacer 26 is formed preferably on the side wall of the SiGe layer and the polysilicon layer. In order to reduce the resistance of a gate conductor 24, preferably, a silicide layer 28 is formed as self-alignment silicide from the polysilicon layer accumulated on the SiGe layer. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
A semiconductor device and method of manufacturing thereof are provided. A trench is formed in a semiconductor substrate. A thin oxide liner is preferably formed on surfaces of the trench. A nitride liner is formed in the trench. Charge is trapped in the nitride liner. In a preferred embodiment, the trench is filled with an oxide by an HDP process to increase the amount of charge trapped in the nitride liner. Preferably, the oxide fill is formed directly on the nitride liner.
Abstract:
PROBLEM TO BE SOLVED: To provide a dual work function semiconductor structure with borderless contact and a method for manufacturing the same. SOLUTION: The structure may comprise a substantially cap-free gate 108 and conductive contacts 134 and 170 to a diffusion part 116 adjacent to the cap-free gate, and the conductive contact may include a field effect transistor (FET) borderless to the gate. Because the structure is a dual work function structure, the conductive contact is allowed to extend over the cap-free gate without being electrically connected thereto. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a FinFET which allows an integrated circuit or an electronic device that includes smaller, more densely disposed active regions or active lines. SOLUTION: A method of forming an integrated circuit having a FinFET comprises a method of forming sub-lithographic fins. A silicon block is defined by a mask, and a pair of fins which is reduced in width or pulled back by the thickness of one fin on each side is included. After that, a second mask is formed around the first mask so that an aperture having the width of the separation distance between the pair of fins remains in the second mask after the first mask is removed. When the silicon is etched through the aperture, the fins are protected by the second mask, thereby defining the fin thickness by the pullback step. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a dual work function semiconductor structure having borderless contact, and to provide a method of fabricating the same. SOLUTION: This structure may include a field effect transistor (FET) having a substantially cap-free gate 108 and conductive contacts 134, 170 to a diffusion 116 adjacent to the cap-free gate, wherein the conductive contacts are borderless to the gate. Because this structure is the dual work function structure, the conductive contacts are allowed to extend over the cap-free gate without being electrically connected thereto.
Abstract:
Improved transistor array device performance is obtained by use of bias voltage regulation which tracks with a fraction of a monitor transistor threshold voltage. The circuitry and methods are especially useful for improving the performance of transistor array devices such as DRAM and embedded DRAM. These benefits are obtained especially when at least two bias voltages normally supplied to the array are regulated by tracking with a fraction of an actual threshold voltage of at least one monitor transistor. Performance improvements include improved reliability, wider operational bias conditions, reduced power consumption and (in the case of memory cells) improved retention time.
Abstract:
The structure and method of forming a notched gate MOSFET disclosed herein addresses such problems as device reliability. A gate dielectric (e.g. gate oxide) is formed on the surface of an active area on the semiconductor substrate, preferably defined by an isolation trench region. A layer of polysilicon is then deposited on the gate dielectric. This step is followed by depositing a layer of silicon germanium) (SiGe). The sidewalls of the polysilicon layer are then laterally etched, selective to the SiGe layer to create a notched gate conductor structure, with the SiGe layer being broader than the underlying polysilicon layer. Sidewall spacers are preferably formed on sidewalls of the SiGe layer and the polysilicon layer. A silicide layer is preferably formed as a self-aligned silicide from a polysilicon layer deposited over the SiGe layer, to reduce resistance of the gate conductor. One or more other processing steps (e.g. source and drain implants, extension implants, and pocket lightly doped drain (LDD) implants), gate conductor stack doping, and silicidation are preferably performed in completing the transistor.