Patent ID: 8092760
Filing Date: 2012-01-10
Classification: H01L,Y10S

Abstract:
1. A scanning device for a semiconductor wafer pollutant measurement apparatus, the scanning device comprising: a scanning arm comprising an X-axis portion, a Z-axis portion which is perpendicularly installed with the X-axis portion so as to move forward and backward along the X-axis portion, and a Y-axis portion which is perpendicularly installed with the Z-axis portion so as to move up and down with respect to the Z-axis portion, wherein the X-axis portion, the Y-axis portion, and the Z-axis portion comprises a linear motion guide and a screw bar in an external casing, respectively, in which a slider is combined with the screw bar by a ball bushing combination so that the slider moves according to rotation of the screw bar; a scanning nozzle including: a syringe pumping portion attached to the x-axis portion, the syringe pumping portion having a syringe pump body whose load moves up and down according to ascending and descending operations in an inner cylinder to thereby apply a pressure and inhale and discharge the reagent solution via selection of inhalation and discharge hoses which are connected with an upper valve, respectively.