Patent ID: 7331492

Claim:
A method for dispensing fluid in a photolithography process, comprising: providing a dispensing apparatus including: a fluid conduit including a first end and a second end, the first end configured to couple to a fluid source; a nozzle body including an intake end coupled to the second end of the fluid conduit to recieve fluid from the fluid conduit, a tip end configured to receive fluid from the intake end and dispense fluid away from the fluid conduit and the nozzle body, and an interior cavity configured to allow at least a portion of the interior cavity to decrease in diameter in response to a pressure change; and an inflatable bladder disposed about a portion of the nozzle body, the bladder configured to couple to a pressure control source to selectively effect the pressure change; coupling the fluid conduit to the fluid source selected from a group consisting of a photoresist, a developer solution, a rinse solution, and water; dispensing the selected fluid from the tip end onto a substrate; and decreasing a diameter of the tip end by changing the pressure.