摘要:
An SOI chip having an isolation barrier. The SOI chip includes a substrate, an oxide layer deposited on the substrate, and a silicon layer deposited on the oxide layer. A gate is deposited above the silicon layer. A first metal contact is deposited above the gate to form an electrical contact with the gate. Second and third metal contacts are deposited to form electrical contacts with the silicon layer. The isolation barrier extends through the silicon layer and the oxide layer, and partially into the substrate, to block impurities in the oxide layer outside the isolation barrier from diffusing into the oxide layer inside the isolation barrier. The isolation barrier surrounds the gate, the first metal contact, the second metal contact, and the third metal contactnullwhich define an active chip area inside the isolation barrier. A method of manufacturing the SOI chip is also disclosed.
摘要:
In order to provide a technique to restrain the punch-through phenomenon of an MISFET constituting a memory cell or the like of a DRAM and to improve the retention time of the memory cell of the DRAM, a threshold value regulating impurity regions SA3 is formed, for example, by implanting BF ions, in a semiconductor substrate under a p-type gate electrode 9p of an information transferring MISFET Qs of the DRAM, and a punch-through preventing region PA is formed to cover end portions of the source and the drain of the information transferring MISFET Qs at a position deeper than the threshold value regulating impurity regions SA3 by implanting an impurity including an atom whose weight is heavier than that of the threshold value regulating impurity atom, for example, In.
摘要:
A semiconductor device and a manufacturing method thereof are obtained which can restrain increase of the parasitic capacitance generated between contact plugs of source/drain regions and a gate electrode while reducing the area of the source/drain regions. A channel region is formed under a gate electrode 1. A pair of source/drain regions 2 are formed to sandwich the channel region. The source/drain regions 2 have a first part 3a being adjacent to the channel region and a second part 3b formed to protrude in a channel width direction from the first part 3a so that a part of outer peripheries of the source/drain regions 2 extend away from the gate electrode 1 in a plan view. Contact plugs 4 are formed on the second part 3b for connecting the source/drain regions 2 to source/drain wirings.
摘要:
A thin film transistor is disclosed, including an insulating substrate, a semiconductor layer formed on the insulating substrate, the semiconductor layer having an active region and an impurity region, a gate insulating layer formed on the active region of the semiconductor layer, a first gate metal layer formed on a predetermined portion of the active region of the semiconductor layer to define a channel region, and a second gate metal layer formed on the first gate metal layer. The first and second gate metal layers have different compositions, such that the second gate metal layer etches faster than the first gate metal layer, thereby preventing formation of a hillock. A first protective layer is formed over the structure, then a light shielding layer, and then a second protective layer is formed over the light shielding layer.
摘要:
A multi-function semiconductor device is provided. The device includes a bipolar transistor and an FET formed in parallel. A semiconductor substrate is provided on an insulating layer. A source/emitter region and a drain region are formed in the semiconductor substrate and border first opposite sides of a body region therebetween. A gate is formed above the substrate between the source/emitter region and the drain region to form an FET having three terminals including the gate, the source/emitter region, and the drain region. A collector region is formed in the substrate abutting the drain region and extending further under the gate and the drain region. A bipolar transistor having three terminals is formed including a base region, the source/emitter, and the collector region. A shortest distance between the collector region and the source/emitter region defines a base width.
摘要:
A plurality of chips divided from a semiconductor wafer having a plurality of semiconductor integrated circuits formed on a front surface of the wafer, are prepared, front surfaces of the chips being bonded to a first wafer sheet. The back and side surfaces of each chip bonded to the first wafer sheet are covered with a reinforcing thin film. Each of the plurality of chips is removed from the first wafer sheet. The flexural strength of a chip can be suppressed from being lowered by chipping and chip cracks.
摘要:
In a semiconductor device having a solid state image sensing device of the present invention, a p-type well region 2a in which a plurality of unit cells, each having a photodiode PD, are formed and a p-type well region 2b in which a peripheral circuit element is formed are installed in a separated manner. Thus, it is possible to prevent a hot carrier, transition metals, etc. within the peripheral circuit region from invading the pixel region more effectively. Consequently, it becomes possible to provide a semiconductor device having a solid state image sensing device and a manufacturing method thereof, which can improve the pixel characteristic.
摘要:
In one embodiment, the present invention relates to a method of forming a Silicon-on-Insulator substrate involving providing a structure comprising a bulk silicon layer, a buried insulation layer over the bulk silicon layer, a silicon device layer over the buried insulation layer, and a mask layer over the silicon device layer; etching portions of the mask layer, the silicon device layer, and the buried insulation layer thereby forming openings and exposing portions of the bulk silicon layer; depositing polysilicon in the openings; removing a portion of the polysilicon in the openings to form polysilicon sidewalls adjacent the silicon device layer and the buried insulation layer and to form gaps at least partially surrounded by the polysilicon sidewalls; depositing an insulation material in the gaps; and removing the mask layer. In another embodiment, the present invention relates to a Silicon-on-Insulator substrate made of a bulk silicon layer, a buried insulation layer over the bulk silicon layer, a silicon device layer over the buried insulation layer; a plurality of at least one of holes and trenches in the silicon device layer and the buried insulation layer, wherein the plurality of at least one of holes and trenches contains a polysilicon sidewall adjacent the bulk silicon layer, the buried insulation layer, and the silicon device layer, the polysilicon sidewall surrounding an insulating material, the insulating material in contact with the bulk silicon layer.
摘要:
A thin film transistor and a fabricating method thereof are adaptive for increasing a capacitance of a storage capacitor. In the method, a gate electrode and a lower electrode of a capacitor are formed at the transistor area and the capacitor area of an insulating substrate, respectively. A gate insulating film, an active layer and an ohmic contact layer on the insulating substrate is sequentially formed to cover the gate electrode and the lower electrode. The ohmic contact layer and the active layer are primarily patterned in such a manner as to be left only at a portion corresponding to the gate electrode of the transistor area and thus expose the gate insulating film. Then, the ohmic contact layer and the active layer are secondarily patterned in such a manner as to reduce the thickness of the gate insulating film at a portion corresponding to the lower electrode. The source and drain electrodes are formed on the gate insulating film at the transistor area, and an upper electrode of the capacitor is formed at a portion corresponding to the lower electrode on the gate insulating film of the capacitor.
摘要:
To present a SOI type MOS element excellent in yield, performance and characteristic, easy in manufacture, and low in cost, and a method of manufacturing the same. A SOI type MOS transistor structure comprising polysilicon electrodes 128 for gate, source and drain composed by burying into trench holes 120a, 120b, 120c respectively formed in a semiconductor substrate 110, a gate oxide film 122 formed in the entire inside of the trench hole 120a, N-diffusion layer 124 and Nnull diffusion layer 126 formed in the entire inside of the trench holes 120b and 120c, and a thick SiO2 film 114 in a trench hole 113 formed in the semiconductor substrate 110 so as to surround the transistor.