Apparatus for removing a coating film
AssigneeNEC LCD Technologies, Ltd.
InventorsYoshiaki Hashimoto, Yasuyuki Sato
Life of this patent
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Abstract
A slit type blow nozzle 14 for ejecting a blow gas 1 and a slit type chemical rinse nozzle 12 for ejecting a rinse chemical 2 are arranged such that the blow gas removes a coating film dissolved by the chemical rinse from the end surface of a glass substrate.
Claims16
An apparatus for removing a coating film comprising:
- a chemical rinse nozzle having an opening ejecting, over a first range, a chemical dissolving a coating film around the perimeter of an end surface of a substrate formed with the coating film;
- and
- a slit type blow nozzle having a slit opening ejecting, at high pressure over a second range, gas to the substrate so as to remove the coating film dissolved by the chemical from the substrate, wherein,
- the second range covered by the blow nozzle is greater than the first range covered by the rinse nozzle,
- the chemical rinse nozzle comprises a slit type chemical rinse nozzle having an opening in slit form,
- the slit type chemical rinse nozzle is arranged between the slit type blow nozzle and the end of the substrate the slit type chemical rinse nozzle and the slit type blow nozzle is of integrated nozzle construction, and
- the integration of the slit type chemical rinse nozzle and the slit type blow nozzle by being separated by a common partition comprises a slit type chemical rinse and blow nozzle provided with a slit opening ejecting the gas and the chemical independently.
The apparatus for removing a coating film according to claim 7, wherein the slit type pure water rinse nozzle comprises a further slit type blow nozzle with a slit opening, the rinse nozzle and further blow nozzle together ejecting a mixture of the gas and the pure water.
An apparatus for removing a coating film comprising:
- a chemical rinse nozzle having an opening ejecting, over a first range, a chemical dissolving a coating film around the perimeter of an end surface of a substrate formed with the coating film;
- and
- a slit type blow nozzle having a slit opening ejecting, at high pressure over a second range, gas to the substrate so as to remove the coating film dissolved by the chemical from the substrate, wherein,
- the second range covered by the blow nozzle is greater than the first range covered by the rinse nozzle,
- the chemical rinse nozzle comprises a slit type chemical rinse nozzle having an opening in slit form,
- the slit type chemical rinse nozzle is arranged between the slit type blow nozzle and the end of the substrate, and
- further comprising a slit type pure water rinse nozzle having a slit opening ejecting pure water between the slit type blow nozzle and the slit type chemical rinse nozzle,
- wherein the integration of the slit type pure water rinse nozzle and the slit type blow nozzle by being separated by a common partition comprises a slit type pure water rinse and blow nozzle provided with a slit opening ejecting the gas and the pure water independently.
An apparatus for removing a coating from a substrate having a side length, film comprising:
- an integrated nozzle forming a slit type rinse nozzle positioned immediately adjacent a slit type blow nozzle,
- the rinse nozzle and the blow nozzle being separated by a common partition,
- the slit type rinse nozzle ejecting a chemical onto the coating for dissolving the coating from the substrate,
- the slit type blow nozzle ejecting a gas onto the substrate to remove the dissolved coating from the substrate,
- the slit type rinse nozzle and the slit type blow nozzle having openings sized to extend along one side of the substrate, a length of the slit type rinse nozzle opening and a length of the slit type blow nozzle opening both being greater than the side length of the substrate,
- wherein, the integration of the rinse nozzle and the blow nozzle provides a combination rinse and blow nozzle provided with a slit opening ejecting the gas and the rinse independently.
Dependencies are inferred from the claim text.