Apparatus and method for detecting bad edge bead removal in a spin-on-glass coater tool
First Claim
1. A system for detecting N2 leaks in a solvent pressure tank that surrounds a solvent bottle in a Edge Bead removal tool in a spin-on-glass coater;
- comprising;
a) a solvent bottle surrounded by a pressure tank;
a N2 gas-supply connected to said pressure tank and pressurizes the inside of said pressure tank and said solvent bottle with N2 gas;
b) a pressure sensor connected to said pressure tank;
wherein said pressure sensor senses the N2 pressure inside of said pressure tank;
said pressure sensor detects when said solvent bottle is improperly installed in said pressure tank;
said pressure sensor is connected to a interlock circuit;
said interlock circuit is connected to a system board;
wherein said system board notifies an operator when said pressure sensor detects an unsatisfactory N2 pressure inside said pressure tank and said solvent bottle;
c) said solvent bottle contains a solvent;
a solvent delivery line connects said solvent bottle to a solvent buffer tank;
a buffer solvent in said solvent buffer tank; and
d) a buffet solvent delivery line connected from said solvent buffer tank to a nozzle over a substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
A solvent delivery system for an edge bead removal tool (EBR) that detects N2 leaks in a solvent pressure tank that surrounds a solvent bottle. A solvent bottle is surrounded by a pressure tank. The solvent bottle contains the solvent used in the EBR tool. A N2 gas supply is connected to the pressure tank and pressurizes the inside of the pressure tank with N2 gas. A pressure sensor is connected to the pressure tank. The pressure sensor senses the N2 pressure inside of the pressure tank. The system board notifies an operator when the pressure sensor detects an unsatisfactory N2 pressure condition inside the pressure tank. The solvent bottle contains a solvent. A buffer solvent is in the solvent buffer tank. A solvent level sensor is on the solvent buffer tank. The solvent level sensor is connected to the interlock circuit. Wherein the system board notifies an operator when the solvent level sensor detects an unsatisfactory buffer solvent level in the solvent tank. A buffer solvent delivery line is connected from the solvent buffer tank to a nozzle over a substrate. The interlock circuit is connected to the system user board by a circuit to board line.
34 Citations
16 Claims
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1. A system for detecting N2 leaks in a solvent pressure tank that surrounds a solvent bottle in a Edge Bead removal tool in a spin-on-glass coater;
- comprising;
a) a solvent bottle surrounded by a pressure tank;
a N2 gas-supply connected to said pressure tank and pressurizes the inside of said pressure tank and said solvent bottle with N2 gas;
b) a pressure sensor connected to said pressure tank;
wherein said pressure sensor senses the N2 pressure inside of said pressure tank;
said pressure sensor detects when said solvent bottle is improperly installed in said pressure tank;
said pressure sensor is connected to a interlock circuit;
said interlock circuit is connected to a system board;
wherein said system board notifies an operator when said pressure sensor detects an unsatisfactory N2 pressure inside said pressure tank and said solvent bottle;
c) said solvent bottle contains a solvent;
a solvent delivery line connects said solvent bottle to a solvent buffer tank;
a buffer solvent in said solvent buffer tank; and
d) a buffet solvent delivery line connected from said solvent buffer tank to a nozzle over a substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
microelectronics conductor materials;
microelectronics semiconductor materials; and
microelectronics dielectric materials.
- comprising;
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11. The system of claim 1 wherein the substrate is used in microelectronics fabrication;
- microelectronics fabrication is selected from the group consisting of;
integrated circuit microelectronics fabrications;
charge coupled device microelectronics fabrications;
solar cell microelectronics fabrications;
ceramic substrate microelectronics fabrications; and
flat panel display microelectronics fabrications.
- microelectronics fabrication is selected from the group consisting of;
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12. The system of claim 1 which further comprises:
- said system detects N2 leaks in said pressure tank that surrounds said solvent bottle in a Edge Bead removal tool in a spin-on-glass coater.
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13. The system of claim 1 wherein said system is embodied in a Edge Bead removal tool in a spin-on-glass coater.
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14. A system for detecting N2 leaks in a solvent pressure tank that surrounds a solvent. bottle in a Edge Bead removal tool in a spin-on-glass coater;
- comprising;
a) a solvent bottle surrounded by a pressure tank;
a N2 gas supply connected to said pressure tank and pressurizes the inside of said pressure tank with N2 gas;
(1) said solvent bottle contains a solvent comprised of ethyl lactate;
(2) said pressure tank is comprised of a top, a bottom and an o-ring;
b) a pressure sensor connected to said pressure tank;
wherein said pressure sensor senses the N2 pressure inside of said pressure tank;
said pressure sensor is connected to a interlock circuit;
said interlock circuit is connected to a system board;
wherein said system board notifies an operator when said press sensor detects an unsatisfactory N2 pressure inside said pressure tank;
said pressure sensor is a digital pressure sensor;
(1) said pressure sensor is connected to said pressure tank by pressure tank to sensor line;
(2) said pressure sensor is connected to said interlock circuit by a sensor to interlock line;
c) said solvent bottle contains a solvent;
a solvent delivery line connects said solvent bottle to a solvent buffer tank;
said buffer solvent in said solvent buffer tank;
(1) said buffer tank further comprises a drain valve;
d) a solvent level sensor on said solvent buffer tank;
said solvent level sensor connected to said interlock circuit;
said interlock circuit is connected to said system user board by a circuit to board line;
wherein said system board notifies an operator when said solvent level sensor detects an unsatisfactory buffer solvent level in said solvent tank;
e) a buffer solvent delivery line connected from said solvent buffer tank to a nozzle over a substrate;
wherein said pressure sensor detects when said N2 gas supply is defective; and wherein said pressure sensor detects when said solvent bottle is improperly installed in said pressure tank. - View Dependent Claims (15, 16)
- comprising;
Specification