Abstract:
A method of fabricating a complementary metal oxide semiconductor (CMOS) device, wherein the method comprises forming a first well region (103) in a semiconductor substrate (102) for accommodation of a first type semiconductor device (130); forming a second well region (104) in the semiconductor substrate (102) for accommodation of a second type semiconductor device (140); shielding the first type semiconductor device (130) with a mask (114); depositing a first metal layer (118) over the second type semiconductor device (140); performing a first salicide formation on the second type semiconductor device (140); removing the mask (114); depositing a second metal layer (123) over the first and second type semiconductor devices (130,140); and performing a second salicide formation on the first type semiconductor device (130). The method requires only one pattern level and it eliminates pattern overlay as it also simplifies the processes to form different suicide material over different devices.
Abstract:
A semiconducting structure and a method of forming thereof, includes a substrate having a p-type device region (20) and a n-type device region (10); a first-type silicide contact (30) to the n-type device region (10); the first-type silicide having a work function that is substantially aligned to the n-type device region conduction band; and a second-type silicide contact (35) to the p-type device region (20); the second-type silicide having a work function that is substantially aligned to the p-type device region valence band. The present invention also provides a semiconducting structure and a method of forming therefore, in which the silicide contact material and silicide contact processing conditions are selected to provide strain based device improvements in pFET and nFET devices.
Abstract:
PROBLEM TO BE SOLVED: To provide a device structure of SOI(silicon on isulator) CMOS (complementary metal oxide semiconductor) in which avalanche multiplication of current flowing through a device is increased when an FET(field effect transistor) is turned on and body charges are removed when the FET is turned off. SOLUTION: An FET having an electric floating body is substantially isolated electrically from a substrate. A high resistance path 16 for coupling the floating body is provided at the source. The resistor is operated as a floating body for active switching and a body grounded in waiting mode in order to reduce leakage current. The high resistance path has a resistance of at least 1 MΩ and made of polysilicon. The resistor is formed using a split polysilicon process for opening a hole in a first polysilicon layer in order that an embedded contact mask 19 brings a second polysilicon layer into contact with the substrate.
Abstract:
Protuberances (5), having vertical (h) and lateral (p) dimensions less than the wavelength range of lights detectable by a photodiode (8), are formed at an optical interface between two layers having different refractive indices. The protuberances may be formed by employing self-assembling block copolymers that form an array of sub lithographic features of a first polymeric block component (112) within a matrix of a second polymeric block component (111). The pattern of the polymeric block component is transferred into a first optical layer (4) to form an array of nanoscale protuberances. Alternately, conventional lithography may be employed to form protuberances having dimensions less than the wavelength of light. A second optical layer is formed directly on the protuberances of the first optical layer. The interface between the first and second optical layers has a graded refractive index, and provides high transmission of light with little reflection.
Abstract:
Disclosed is semiconductor structure (100) with an insulator layer (120) on a semiconductor substrate (110) and a device layer (130) is on the insulator layer. The substrate (110) is doped with a relatively low dose of a dopant (111) having a given conductivity type such that it has a relatively high resistivity. Additionally, a portion (102) of the semiconductor substrate immediately adjacent to the insulator layer can be doped with a slightly higher dose of the same dopant (111), a different dopant (112) having the same conductivity type or a combination thereof (111 and 112). Optionally, micro-cavities (122, 123) are created within this same portion (102) so as to balance out any increase in conductivity with a corresponding increase in resistivity. Increasing the dopant concentration at the semiconductor substrate-insulator layer interface raises the threshold voltage (Vt) of any resulting parasitic capacitors and, thereby reduces harmonic behavior. Also disclosed herein are embodiments of a method and a design structure for such a semiconductor structure.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor structure including a thin gate dielectric in which nitrogen is selectively enriched. SOLUTION: Although an introducing amount of nitrogen is sufficient to cause gate leakage and the infiltration of a dopant to be reduced, or to prevent these, the amount does not decrease device performance much. Nitrogen lower than that of a gate dielectric of nFET in density is introduced into a gate dielectric of a pFET. Nitriding can be selectively carried out by rapid thermal nitridation (RTN), furnace nitriding, remote plasma nitriding (RPN), decoupled plasma nitriding (DPN), and wale implantation or polysilicon implantation, or by various techniques, including combinations of these methods. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide means for making an ultra-low k dielectric material which is compatible with a C4/wire bond structure. SOLUTION: The manufacturing method and structure of a semiconductor chip comprises a plurality of interconnecting metallization layers, at least one deformable dielectric material layer covering the interconnecting metallization layers, at least one I/O bonding pad, and a support structure including a fairly rigid dielectric in supporting relation with the pads and avoiding crushing of the deformable dielectric material layer.
Abstract:
PROBLEM TO BE SOLVED: To provide a pixel array in an image sensor, the image sensor and a digital camera including the image sensor. SOLUTION: The image sensor includes a pixel array with colored pixels and unfiltered (color filter-free) pixels. Each unfiltered pixel occupies one or a plurality of array locations. The colored pixels may be arranged in uninterrupted rows and columns with unfiltered pixels disposed between the uninterrupted rows and columns. The image sensor may be of a CMOS type with the unfiltered pixels reducing low-light noise and improving low-light sensitivity. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a semiconductor structure comprising different species of silicide or germanide positioned in different regions of the semiconductor structure. SOLUTION: The different species of silicide or germanide is formed on a semiconductor layer and/or a conductor layer. By this invention, by utilizing combination of continuous accumulation of different metals and pattern formation, the different silicide or germanide are formed in the different regions of a semiconductor chip. This method includes a step for providing a Si-including layer or a Ge layer having at least a first region and a second region, a step for forming a first silicide or germanide in one of the first region and the second region, and a step for forming a second silicide or germanide having different composition from the first silicide or germanide in the other region not including the first silicide or germanide. The steps for forming the first and second silicide or germanide are performed continuously or with a single step. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a desired junction profile in a semiconductor device. SOLUTION: At least one dopant is thrown into a semiconductor substrate. At the same time, the semiconductor substrate and at least one dopant are annealed exposing the semiconductor substrate to an electric field thus diffusing at least one dopant into the semiconductor substrate.