摘要:
In a power transmitting device, projections are formed on a surface of a main cam that faces an armature. This structure causes the main cam to contact the armature only at distal surfaces of the projections. The area of the distal surfaces of the projections is in a range where the magnetic flux density generated at the distal surfaces of the projections by the electromagnet is saturated. Therefore, reduction of the responsiveness and controllability of the power transmitting device due to magnetization of the main cam is suppressed.
摘要:
A chamber includes at its upper section a gas inlet from which to introduce a deposition gas. The inner walls of the chamber are covered by a cylindrical liner, and the chamber houses a susceptor assembly on which to place a semiconductor substrate. The liner includes a barrel section inside which the susceptor assembly is placed; a head section that is located right below the gas inlet and smaller in horizontal cross-sectional area than the barrel section; and a stepped section that connects the barrel section and the head section. The susceptor assembly is formed by fixing a ring plate to a susceptor via support posts. The ring plate covers the periphery of the stepped section of the liner. By the deposition gas flowing in a downward direction from the gas inlet into the chamber, a crystalline film is formed on the substrate positioned on the susceptor assembly.
摘要:
There is provided an engine control device which can accurately calculate a compensation coefficient used for transient compensation of an ignition timing without involving a complicated and large-scale calculation model in order to prevent a combustion deterioration and the like caused by a mechanical response delay and the like of the variable valve timing mechanism at a transition time such as an acceleration/deceleration time. The angular difference between each current real phase of the intake/exhaust valves 21 and 22 and a target phase set based on an engine load equivalent amount such as an intake air amount is obtained; the shift amount or its correlation value between a current real intake air amount and a theoretical intake air amount value calculated using a pressure inside an intake manifold when each phase of the intake/exhaust valves has reached the target phase is obtained; further a compensation coefficient for matching the shift amount or its correlation value with the angular difference is obtained; and the compensation coefficient is used to perform transient compensation of an ignition timing.
摘要:
Control device of an internal combustion engine that determines whether or not to perform sensor element heating control of an air-fuel ratio sensor with high accuracy based on the mass of condensed water in an exhaust pipe. The control device computes the rate of change of condensed water mass in an exhaust pipe based on the saturated water vapor pressure and the water vapor partial pressure of exhaust gas, and computes the rate of change of evaporation mass in the exhaust pipe based on the amount of heat which the condensed water receives in the exhaust pipe. The control device updates the mass of condensed water based on the rate of change of condensed water mass and the rate of change of evaporation mass, and determines whether or not to perform heating control by a heating controlling unit based on the updated mass of condensed water.
摘要:
A semiconductor manufacturing apparatus includes: a plurality of reaction chambers into which wafers are introduced and deposition process is performed; a material gas supply mechanism that includes a plurality of material gas supply lines that respectively supply a material gas to the plurality of reaction chambers and a flow rate control mechanism that controls a flow rate of the marital gas in the material gas supply lines; a carrier gas supply mechanism that includes a plurality of carrier gas supply lines that respectively supplies a carrier gas into the plurality of reaction chambers; and a material gas switching mechanism that intermittently opens and closes the plurality of material gas supply lines respectively so that at least one of the plurality of material gas supply lines comes to be in an opened state at a same time, and sequentially switches the reaction chamber to which the material gas is supplied.
摘要:
Provided is a semiconductor manufacturing apparatus including: a reaction chamber including a gas supply inlet and a gas exhaust outlet, and into which a wafer is to be introduced; a process gas supply mechanism that supplies process gas into the reaction chamber from the gas supply inlet of the reaction chamber; a wafer retaining member that is arranged in the reaction chamber and that retains the wafer; a heater that heats the wafer retained by the wafer retaining member to a predetermined temperature; a rotation drive control mechanism that rotates the wafer retaining member together with the wafer; a gas exhaustion mechanism that exhausts gas in the reaction chamber from the gas exhaust outlet of the reaction chamber; and a drain that is disposed at a bottom portion near a wall surface in the reaction chamber and that collects and discharges oily silane that drips from the wall surface.
摘要:
A deposition apparatus 100 comprises: a heater 121 for heating a silicon wafer 101; an electrically-conductive busbar 123 for supporting the heater 121; and an electrode assembly 107 having a hollow rod electrode 108 with upper and lower openings for conducting electricity to the heater 121 and a connector 124, secured to the busbar 123, for connecting the busbars 123 to the rod electrode 108. Wafer heating by the heater 121 is conducted while a purge gas 117 is fed from the lower opening of the rod electrode 108 so that the purge gas 117 can flow through the upper opening of the rod electrode 108 and through a clearance 131 that is located at the joint surface between the busbar 123 and the connector 124 and communicates with the upper opening of the rod electrode 108.
摘要:
The present invention provides a coating apparatus capable of efficiently performing a deposition process and also provides an efficient coating method.A coating apparatus 1 for performing a deposition process on substrates W placed in a coating chamber by metalorganic chemical vapor deposition includes three or more coating chambers, e.g., a first coating chamber 2, a second coating chamber 102, and a third coating chamber 202. These coating chambers are configured such that each coating chamber is controlled independently of the other coating chambers to form a different film on the substrates W by controlling at least the composition of the material gas, the flow rate of material gas, the temperature, and the pressure in the coating chamber. A cleaning unit 5 is provided outside the coating chambers 2, 102, 202 to clean the susceptor after the deposition process.
摘要:
Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.
摘要:
A susceptor treatment method including placing a first substrate on a susceptor and forming a Si film on the first substrate by epitaxial growth, placing a second substrate on the susceptor in place of the first substrate and forming a SiC film on the second substrate by epitaxial growth, and allowing HCl gas to flow downward from above the susceptor while the susceptor, from which the second substrate has been removed, is heated to a temperature and rotated to remove the remaining crystalline grains derived from the epitaxial growth of Si film and the SiC film on the susceptor.