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US 7,008,124 B2Granted
Method and device for processing substrate
AssigneeTokyo Electron Limited
InventorAkira Miyata
Life of this patent
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Abstract
A substrate processing method comprises stopping the transfer of a head substrate of a succeeding lot for a period which is an integral multiple of a cycle time after a last substrate of a preceding lot is transferred from a cassette section to a processing section by a transfer mechanism, executing dummy dispense of a predetermined time by a solution processing unit during the substrate transfer stop period, and transferring the head substrate of the succeeding lot to the processing section by the transfer mechanism after the dummy dispense.
Claims6
A substrate processing device comprising:
- a cassette section from and into which a cassette housing a plurality of substrates constituting lots is taken and put;
- a processing section to execute a plurality of processes for the substrates in sequence;
- a plurality of solution processing units disposed in the processing section to process the substrates by using a predetermined processing solution;
- a transfer mechanism to take out the substrates from the cassette of the cassette section and to transfer the substrates to the processing section;
- substrate carrying mechanisms to receive the substrates from the transfer mechanism, to carry the substrates in sequence in the processing section, and to carry the substrates out to the cassette section;
- a cyclic route disposed in the processing section, along which the substrate carrying mechanisms make cycle movements;
- and
- a control section to make recipes which define operations of the transfer mechanism, the substrate carrying mechanisms and the solution processing units, to obtain a cycle time and a dummy dispense time based on the recipes, to obtain a substrate transfer stop period based on the recipes, the cycle time and the dummy dispense time, to stop transfer of a substrate of a succeeding lot from the cassette section to the processing section during the substrate transfer stop period, to cause the solution processing unit to execute dummy dispense during the substrate transfer stop period, and then to transfer the substrate of the succeeding lot to the processing section by the transfer mechanism.
5 more elements
Dependencies are inferred from the claim text.