Patent ID: 8293023
Filing Date: 2012-10-23
Classification: H01L

Abstract:
1. A method of using a linear cleaning system operable to deposit liquid and operable to remove liquid by way of negative pressure, said method comprising: arranging a wafer to have the liquid removed therefrom by the linear cleaning system, the wafer having a sensor portion disposed thereon, the sensor portion being operable to provide a sensor signal based on pressure related to the liquid being removed therefrom by the linear cleaning system; removing the liquid, by the linear cleaning system, from the wafer; providing the sensor signal, by the sensor portion, based on the pressure related to the liquid being removed from the wafer; determining a difference; and adjusting said removing the liquid, wherein said providing the sensor signal, by the sensor portion, based on the pressure related to the liquid being removed from the wafer comprises providing a first sensor signal by the sensor portion, based on the pressure related to the liquid being removed from the wafer at a first time and providing a second sensor signal, by the sensor portion, based on the pressure related to the liquid being removed from the wafer at a second time, wherein said determining a difference comprises determining whether a difference between the first sensor signal and the second sensor signal is above a threshold, and wherein said adjusting said removing the liquid comprises adjusting said removing the liquid, by the linear cleaning system, from the wafer when said determining comprises determining that the difference between the first sensor signal and the second sensor signal is above the threshold.