摘要:
In a method of holding a substrate and a substrate holding system, the amount of foreign substances on the back surface of the substrate can be decreased, and only a small amount of foreign substances transferred from a mounting table to the substrate. For this purpose, the substrate holding system has a ring-shaped leakage-proof surface providing a smooth support surface on the specimen table corresponding to the periphery of the substrate, a plurality of contact holding portions which bear against the substrate on the specimen table between the corresponding position to the periphery of the substrate and the corresponding position to the center of the substrate, and electrostatic attraction means for fixing the substrate by contacting the back surface of the substrate to the ring-shaped leakage-proof surface and the contact holding portions. The substrate is exposed to a cooling surface at the ring-shaped leakage-proof surface and the contact holding portion placed at a position inside the ring-shaped leakage-proof surface. The back surface of the substrate and the cooling surface do not contact each other in the large portion of the remaining area.
摘要:
Present invention provides a method of holding substrate and a substrate holding system where the amount of foreign substances on the back surface can be decreased, and a little amount of foreign substances may be transferred from a mounting table to a substrate. The substrate holding system comprises a ring-shaped leakage-proof surface having smooth surface on the specimen table corresponding to the periphery of the substrate, a plurality of contact holding portions against the substrate on the specimen table between the corresponding position to the periphery of the substrate and the corresponding position to the center of the substrate, and electrostatic ttraction means for fixing the substrate by contacting the back surface of the substrate to the ring-shaped leakage-proof surface and the contact holding portions. The substrate contacts to the cooling surface at the ring-shaped leakage-proof surface and the contact holding portion placed on a position inside the ring-shaped leakage-proof surface. The back surface of the substrate and the cooling surface do not contact to each other in the large portion of the remaining area.
摘要:
A skid bar is mountable on existing front tow hooks of a vehicle, for protecting an engine, transmission and/or engine accessories from severe road conditions. The skid bar includes an elongated lateral member and a pair of end plates fixed to opposing ends of the lateral member. The end plates correspond to and are engageable with the existing tow hooks of the vehicle. The underguard skid bar extends in front of and below an engine/transmission assembly for protecting the same when the vehicle is travelling on a road having severe obstacles such as road bumps or road gutters. Each end plate has a plurality of bolt holes corresponding to tow openings in the existing tow hooks, such that each end plate is securable to the existing tow hooks, by being bolted thereto, through the tow openings in the existing tow hooks. Furthermore, each of the end plates presents a tow opening in a forward portion thereof.
摘要:
A substrate holding system is provided for holding a substrate in a substrate etching apparatus by using electrostatic force. An electrical insulating member is also provided having a top surface approximately at the same level as the treated surface of the substrate and having an inner side surface in adjacent relationship with a surface of the substrate forming the periphery of the substrate. The inner side surface of the electrical insulating member faces the periphery of the substrate in substantially parallel relationship with a direction normal to the treated surface of the substrate. A dielectric film is formed on one surface of a metallic member having a flow passage for circulating a coolant to control the temperature of the substrate. An electrically insulating material member is placed on and in contact with a surface of the metallic member. An electrically conductive material member grounded to a standard electric potential is placed on and in contact with a surface of the electrically insulating material member. Three kinds of members are overlaid and fixed to each other in order of the metallic member having the dielectric film, the electrically insulating material member and the standard electric potential member. A coolant hole penetrates from the standard electric potential member side to the coolant flow passage of the metallic member being formed, at least three through holes penetrating the three kinds of members being formed and movable members linked to a substrate transporting mechanism being inserted in the through holes.
摘要:
A CVD reactor apparatus includes a substrate clamp for clamping a peripheral edge of the front of a substrate disposed in a CVD reactor and, dividing a space in the reactor into a first space adjacent the front of the substrate and a second space adjacent the backside of the substrate. The apparatus also includes a unit for cooling the surface temperature of an inner wall of the reactor to a temperature equal to or less than a deposition lower limit, and a unit for supplying a CVD gas to the first space adjacent the substrate front and supplying an inert gas to the second space adjacent the substrate backside at different pressures and causing a reaction at only the substrate front, a reaction gas monitor and a substrate temperature monitor.
摘要:
A semiconductor device manufacturing apparatus and its method, measures the amount or chemical composition of reaction products adhering to or deposited on the inside of a processing chamber of the semiconductor device manufacturing apparatus, without exposing the chamber to the air. External light, such as infrared light, is introduced from a light introducing unit into the processing chamber. A light receiving unit provided outside the processing chamber receives light reflected from a specified location inside the processing chamber or light reflected from an arbitrary location inside the chamber. The received light is then subjected to spectrometry or photometry to judge how badly the chamber is contaminated and to judge the state of the process being carried out.
摘要:
A multiprocessing apparatus has a plurality of process processors connected to a carrier processor and controlled by a control system, wherein there are provided connection information signal generating means for generating a connection information signal expressing information of connection of the plurality of process processors to the carrier processor; switching means for generating a registration information signal expressing information of registration of connection of the plurality of process processors to the carrier processor; and control means for carrying out a control process while logically judging a matching state between the connected process processors and the registered process processors by reference to the connection information and the registration information. Thus, it is possible to provide a multiprocessing apparatus in which the number of process processors to be connected to the carrier processor can be securely increased or decreased.
摘要:
This invention relates to a vacuum processing method and apparatus. When a sample is plasma-processed under a reduced pressure, a sample bed is cooled by a cooling medium kept at a predetermined temperature lower than an etching temperature, the sample is held on the sample bed, a heat transfer gas is supplied between the back of the sample and the sample installation surface of the sample bed, and the pressure of the heat transfer gas is controlled so as to bring the sample to a predetermined processing temperature. In this way, a sample temperature can be regulated rapidly without increasing the scale of the apparatus.
摘要:
An emboss roll according to the present invention is capable of assuredly performing an embossing work without any risk of shaving a surface of nonwoven fabrics and forming pin holes when used to emboss nonwoven fabrics for the purpose of prevention of filament shavings to be adhered to products. This emboss roll having an outer surface thereof provided with embossing projections wherein all of the top end corners thereof are cut so as to be a surface. As a result of cutting the top end corners of the embossing projections, nonwoven fabrics can be protected from being cut by the corner portions or forming pin holes during the embossing work.
摘要:
Disclosed are a very soft polyolefin spunbonded nonwoven fabric and its production method. The polyolefin spunbonded nonwoven fabric according to the present invention is defined as (A) being formed of continuous polyolefin fibers having a fineness of 0.5 to 3 denier, (B) having basic weight between 30 g/m.sup.2 and 15 g/m.sup.2, and (C) having .sqroot.S.sub.MD .times.S.sub.TD of 2.5 g or below, wherein S.sub.MD and S.sub.TD are respectively the softnesses in the machine and transverse directions as measured by a handle-O-meter. The method of producing a strip of very soft polyolefin nonwoven fabric by directing polyolefin continuous fibers in a fixed direction, comprises the steps of: orienting the axes of the continuous fibers in the direction in which the continuous fibers are fed so as to form a web having a warp orientation factor (the maximum tensile strength in the direction in which the continuous fibers are fed, i.e., in a machine direction/the maximum tensile strength in a transverse direction) of 3.0 or above; and then applying wave-like crepes propagated in the machine direction to the web by creping the web.