Abstract:
A method, structure and alignment procedure, for forming a finFET. The method including, defining a first fin of the finFET with a first mask and defining a second fin of the finFET with a second mask. The structure including integral first and second fins of single-crystal semiconductor material and longitudinal axes of the first and second fins aligned in the same crystal direction but offset from each other. The alignment procedure including simultaneously aligning alignment marks on a gate mask to alignment targets formed separately by a first masked used to define the first fin and a second mask used to define the second fin.
Abstract:
A multi-layered gate electrode stack structure of a field effect transistor device is formed on a silicon nano crystal seed layer (41) on the gate dielectric (43). The small grain size of the silicon nano crystal layer allows for deposition of a uniform and continuous layer of poly-SiGe (45) with a [Ge] of up to at least 70% using in situ rapid thermal chemical vapor deposition (RTCVD). An in-situ purge of the deposition chamber in a oxygen ambient at rapidly reduced temperatures results in a thin SiO2 or SixGeyOz interfacial layer (47), (3) to 4A thick. The thin SiO2 or SixGeyOZ interfacial layer is sufficiently thin and discontinuous to offer little resistance to gate current flow yet has sufficient [O] to effectively block upward Ge diffusion during heat treatment to thereby allow silicidation of a subsequently deposited layer of cobalt. This gate electrode stack structure is used for both nFETs.and pFETs.
Abstract:
A method and structure for an integrated circuit structure that utilizes complementary fin-type field effect transistors (FinFETs) is disclosed. The invention has a first-type of FinFET which includes a first fin (100), and a second-type of FinFET which includes a second fin (102) running parallel to the first fin (100). The invention also has an insulator fin positioned between the source/drain regions (130) of the first first-type of FinFET and the second-type of FinFET. The insulator fin has approximately the same width dimensions as the first fin (100) and the second fin (102), such that the spacing between the first-type of FinFET and the second-type of FinFET is approximately equal to the width of one fin. The invention also has a common gate (106) formed over channel regions of the first-type of FinFET and the second-type of FinFET. The gate (106) includes a first impurity doping region adjacent the first-type of FinFET and a second impurity doping region adjacent the second-type of FinFET. The differences between the first impurity doping region and the second impurity doping region provide the gate with different work functions related to differences between the first-type of FinFET and the second-type of FinFET. The first fin (100) and the second fin (102) have approximately the same width.
Abstract:
A method of providing a freestanding semiconductor layer on a conventional SOI or bulk-substrate silicon device includes forming an amorphous or polycrystalline mandrel on a monocrystalline base structure. A conformal polycrystalline semiconductor layer is then formed on the mandrel and on the base structure, wherein the polycrystalline layer contacts the base structure. The polycrystalline semiconductor layer is then recrystallized so that it has a crystallinity substantially similar to that of the base structure. Thus, a freestanding semiconductor layer is formed with a high degree of control of the thickness and height thereof and maintaining a uniformity of thickness.
Abstract:
PROBLEM TO BE SOLVED: To provide chip-on-chip module and a forming method belonging to the same. SOLUTION: A first semiconductor chip is connected to a second semiconductor chip. The first chip comprises a first wiring layer and a first conductive substrate in the first side and the second side of the first chip, respectively. A power supply voltage VDD is adapted so as to be electrically connected to the second side of the first chip. The second chip comprises a second wiring layer and a second conductive substrate in the first side and the second side of the second chip, respectively. A grounding voltage GND is adapted so as to be electrically connected to the second side of the second chip. The first side of the first chip is connected to the first side of the second chip. The power supply voltage VDD and the grounding voltage GND are adapted so as to supply an electric power to the first and the second chips. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an asymmetrical field effect transistor (FET) having a threshold voltage which is compatible with the present CMOS circuit design and a low-resistance gate electrode. SOLUTION: This asymmetrical FET contains a structure integrated with a p-type gate portion and an n-type gate portion provided on the main body of a vertical semiconductor and the interconnection between the gate portions and a flattened structure on the interconnection. Because of the integrated Fin FET/thick polycilicon-containing gate structure, an Fin FET having the threshold voltage which is compatible with the present CMOS circuit design and the gate electrode the resistivity of which is lower than that of the conventional symmetrical Fin FET can be manufactured. The asymmetrical FET contains the n-type gate portion and p-type gate portion on the main body of the vertical semiconductor and the interconnection between the gate portions and the flattened structure on the interconnection. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To realize a decoupling capacitance permitted by a semiconductor device by forming a high junction capacitance while forming an implantation layer under an insulating layer of a first circuit region, and connecting the implantation layer to wells of a second circuit region. SOLUTION: An isolation oxide layer 22, a first device layer 24, an isolation layer 20, and a first polarity type highly doped implantated layer 25 that is formed under the layer 22 are formed at a first circuit region of an SOI structure. Further, a second circuit region (e.g. a bulk device region) is adjacent to the first circuit region, and has a bulk region 30, first polarity type wells 32 and 34, a second device region having regions 36, 38 and 42, a region 44 of first and second polarity type, the layer 20 and the like. Both circuit regions are located on a second polarity type substrate 50. The first circuit region covers almost the whole chip. If a larger capacitance is required, a second polarity type dopant 40 is used under the layer 25 formed by ion implantation with 1 MeV energy.
Abstract:
PROBLEM TO BE SOLVED: To provide band edge controlled Vt offset devices. SOLUTION: There are provided band edge controlled Vt offset devices, design structures for band edge controlled Vt offset devices and methods of manufacturing such structures. The structure includes a first FET having a channel of a first compound semiconductor of first atomic proportions resulting in a first band structure and a first type. The structure further includes a second FET having a channel of a second compound semiconductor of second atomic proportions resulting in a second band structure and a first type. The first compound semiconductor is different from the second compound semiconductor such that the first FET includes a first band structure different from second band structure, giving rise to a threshold voltage different from that of the second FET. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a semiconductor wafer structure which makes the interior of a wafer surface uniform in reflection factor, in order to acquire an uniform temperature change over a wafer whole region, when a rapid thermal annealing process of a semiconductor structure including a combination of different semiconductor materials is carried out. SOLUTION: In a semiconductor wafer structure in which a first device 401 includes epitaxial growth silicon germanium with a first reflection factor, and a second device 402 includes single crystal silicon with a second reflection factor, a uniform reflection factor is obtained by distributing a first device 451 as a non-functionality dummy including silicon germanium, and a second device 452 as a non-functionality dummy including single crystal silicon over the wafer whole region to obtain the same overall ratio and same density as a distribution of the first and the second device. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor structure that incorporates a field shield below a semiconductor device (e.g., a field effect transistor (FET) or a diode). SOLUTION: This field shield is sandwiched between upper and lower isolation layers 203, 204 on a wafer. A local interconnect 235 extends through the upper isolation layer 204 and connects the field shield to a selected doped semiconductor region of the device (e.g., a source/drain region 211, 212 of a FET or a cathode or anode of a diode). Current that passes into the device, for example, during back-end of the line charging, is shunted by the local interconnect away from the upper isolation layer 204 and down into the field shield. Consequently, an electric charge 220 is not allowed to build up in the upper isolation layer but rather bleeds from the field shield into the lower isolation layer and into the substrate below. This field shield further provides a protective barrier against any electric charge that becomes trapped within the lower isolation layer or substrate. COPYRIGHT: (C)2008,JPO&INPIT