摘要:
A SiO2 film is formed on a semiconductor substrate. Then, a SiN film is formed on the SiO2 film. In this event bis (tertiary butyl amino) silane and NH3 are used as a material gas, and the film forming temperature is set to 600° C. or lower.
摘要:
A semiconductor device equipped with information storage capacitor comprising a first capacitor electrode, an oxide film, a second capacitor electrode and insulating films containing silicon as a main constituting element, wherein at least one of first and second capacitor electrodes contains as a main constituting element at least one element selected from rhodium, ruthenium, iridium, osmium and platinum, and as an adding element at least one element selected from palladium, nickel, cobalt and titanium, is excellent in adhesiveness between the capacitor electrodes and the insulating films.
摘要:
Electrode pads are formed on a tape circuit to correspond to positions of solder bumps on an IC. A plurality of pins formed on a periphery of the tape circuit provide electrical connection between the tape circuit and a mother socket. An elastomer sheet is provided between a portion of the tape circuit, on which the electrode pads are formed and the IC is mounted, and the mother socket, and a side surface of the sheet, which contacts with the tape circuit, is formed with cut grooves in lattice fashion such that respective centers of the electrode pads substantially coincide with intersections of the grooves. Thus portions defined by the grooves on the sheet are made independent from one another to enable accommodating pushing forces from the solder bumps, so that, even if dispersion in height generates between the solder bumps, the respective portions defined by the grooves are hardly influenced by one another, and so accommodate the pushing forces from the solder bumps to permit the solder bumps and the electrode pads to surely contact with each other.
摘要:
A method for the production of a semiconductor device comprises the steps of forming a stopper layer on a semiconducting substrate, forming a first opening part in the stopper layer thereby enabling the first opening part to establish an element separating area, etching the semiconducting substrate through the first opening part thereby forming a trench in the semiconducting substrate, partially etching the part of the stopper layer approximating closely to the trench thereby dilating the width of the first opening part, forming an oxide film on the stopper layer, in the first opening part, and inside the trench, removing the part of the oxide film rising above the stopper layer, removing the stopper layer, and contracting the lateral parts of the oxide film protruding from the trench.
摘要:
The present invention relates to a method for forming a silicon oxide film on a substrate by the thermal chemical vapor deposition method (thermal CVD method) using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate (TEOS). It is an object of the present invention to provide a method for forming an insulating film in a semiconductor device, in which anomalous deposition of the film at a step portion (a portion of difference in level) is prevented and the film contains less moisture and less organic matter and is superior in smoothness. The present invention includes the steps of exposing the depositing surface of the substrate 14 to tetraethoxyorthosilicate in the absence of oxygen and ozone at the elevated temperature and forming an oxide film 15 on the substrate 14 by the thermal CVD method using a gas mixture of ozone (O.sub.3) and tetraethoxyorthosilicate at a deposition temperature. In a second embodiment HMDS is substituted for TEOS in the pretreatment step.
摘要:
The plastic mold decapsuling apparatus comprises an etchant bottle; a heat tank; an etchant reservoir disposed in the heat tank; at least one decapsuling plastic mold holder; a first etchant feeding pump for selectively circulating the etchant from the etchant bottle to the etchant reservoir and discharging waste etchant; and a second etchant feeding pump for feeding the etchant from the reservoir to the plastic mold holder. Since the etchant bottle can be set as it is without transferring the etchant into another vessel, the etchant handling work is safe. Since a required amount of etchant can previously be heated in a reservoir within the heat tank, it is possible to continuously supply a predetermined amount of etchant heated to a constant temperature, thus improving the speed of decapsuling work. Futher, since the etchant is circulated through the decapsuling plastic mold holder, it is possible to firmly decapsule plastic mold devices by use of a relatively mild etchant such as fuming nitric acid.
摘要:
A first p-type SiGe mixed crystal layer is formed by an epitaxial growth method in a trench, and a second p-type SiGe mixed crystal layer is formed. On the second SiGe mixed crystal layer, a third p-type SiGe mixed crystal layer is formed. The height of an uppermost surface of the first SiGe mixed crystal layer from the bottom of the trench is lower than the depth of the trench with the surface of the silicon substrate being the standard. The height of an uppermost surface of the second SiGe mixed crystal layer from the bottom of the trench is higher than the depth of the trench with the surface of the silicon substrate being the standard. Ge concentrations in the first and third SiGe mixed crystal layers are lower than a Ge concentration in the second SiGe mixed crystal layer.
摘要:
A semiconductor device including an n-channel MISFET including source/drain regions 38 formed in a semiconductor substrate 10 with a channel region between them, and a gate electrode 44 of a metal silicide formed over the channel region with a gate insulating film 12 interposed therebetween; and an insulating film 46 formed over the gate electrode 44 from side walls of the gate electrode 44 to an upper surface of the gate electrode 44, having a tensile stress from 1.0 to 2.0 GPa and applying the tensile stress to the channel region.
摘要:
In a semiconductor device having a Low-k film as an interlayer insulator, peeling of the interlayer insulator in a thermal cycle test is prevented, thereby providing a highly reliable semiconductor device. In a semiconductor device having a structure in which interlayer insulators in which buried wires each having a main electric conductive layer made of copper are formed and cap insulators of the buried wires are stacked, the cap insulator having a relatively high Young's modulus and contacting by its upper surface with the interlayer insulator made of a Low-k film having a relatively low Young's modulus is formed so as not to be provided in an edge portion of the semiconductor device.
摘要:
A semiconductor device includes an NMOS transistor and a PMOS transistor. The NMOS transistor includes a channel area formed in a silicon substrate, a gate electrode formed on a gate insulating film in correspondence with the channel area, and a source area and a drain area formed in the silicon substrate having the channel area situated therebetween. The PMOS transistor includes another channel area formed in the silicon substrate, another gate electrode formed on another gate insulating film in correspondence with the other channel area, and another source area and another drain area formed in the silicon substrate having the other channel area situated therebetween. The gate electrode has first sidewall insulating films. The other gate electrode has second sidewall insulating films. The distance between the second sidewall insulating films and the silicon substrate is greater than the distance between the first sidewall insulating films and the silicon substrate.