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, and rotation drive force is distributed from a drive shaft which is positioned in the vertical direction.
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Accused Products
Abstract
The object of the present invention is to provide a multi-stage type processing apparatus which can be positioned in a limited space without having a complicated driving mechanism. The processing apparatus is comprised of 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.
9 Citations
7 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, and rotation drive force is distributed from a drive shaft which is positioned in the vertical direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification