Multi-stage type processing apparatus
First Claim
1. A multi-stage type processing apparatus comprising:
- a plurality of processing units which are provided apart from each other in the vertical direction, each unit having a cup surrounding a substrate and a chuck for retaining and rotating a substrate,wherein the cups and the chucks are separated, all the cups being supported by an elevator member so as to be elevated and lowered unitarily and all the chucks being supported by a fixing member,the fixing member comprising a hollow vertical support post and plural hollow arms extending from the support post to each chuck,and rotation drive force is distributed from a common drive shaft which is positioned within the support post and oriented in the vertical direction.
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Accused Products
Abstract
A multi-stage type processing apparatus which can be positioned in a limited space without having a complicated driving mechanism, includes processing units which are stacked in a multi-stage state in the vertical direction. Each processing unit has a cup surrounding a substrate and a chuck for retaining and rotating a substrate, and the cup can be elevated and lowered with respect to the chuck. A cylinder unit is contracted and thereby all the cups are unitarily lowered, so that the top surface of the chuck is located in a slightly upper position with respect to the top surface of the cup. In this state, a substrate is mounted on the chuck and attracted. Next, the cylinder unit is extended and thereby all the cups are unitarily elevated so as to accommodate the substrate therein. In this state, developing liquid is dropped from a nozzle for developing liquid onto the center of the substrate, and a motor is driven to rotate the chuck (the substrate) via a drive shaft and a timing belt to allow the developing liquid to cover the entire surface of the substrate.
10 Citations
9 Claims
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1. A multi-stage type processing apparatus comprising:
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a plurality of processing units which are provided apart from each other in the vertical direction, each unit having a cup surrounding a substrate and a chuck for retaining and rotating a substrate, wherein the cups and the chucks are separated, all the cups being supported by an elevator member so as to be elevated and lowered unitarily and all the chucks being supported by a fixing member, the fixing member comprising a hollow vertical support post and plural hollow arms extending from the support post to each chuck, and rotation drive force is distributed from a common drive shaft which is positioned within the support post and oriented in the vertical direction. - View Dependent Claims (2, 3, 4, 5)
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6. A multi-stage type processing apparatus comprising:
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a plurality of processing units which are provided apart from each other in the vertical direction, each unit having a cup surrounding a substrate and a chuck for retaining and rotating a substrate, wherein the cups and the chucks are separated, all the cups being supported by an elevator member so as to be elevated and lowered unitarily and all the chucks being supported by a fixing member, and rotation drive force is distributed from a common drive shaft which is positioned in the vertical direction, wherein said drive shaft is divided into plural sections with respect to each processing unit, and each of the divided shaft sections are jointed by a universal joint. - View Dependent Claims (7, 8, 9)
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Specification