Patent ID: 8834231
Filing Date: 2014-09-16
Classification: B24C,H01L

Abstract:
1. An apparatus for removing contaminants from at least one portion of a semiconductor mold inline, the apparatus comprising: a. a multi-exit nozzle positioned at a preset position with respect to the at least one portion; b. a blasting unit for blasting at least one of one or more abrasives, one or more additives and one or more dry-ice particles at a predefined temperature and pressure over the at least one portion, through the multi-exit nozzle, whereby the dry-ice particles produce an impact and remove the contaminants from the at least one portion of the semiconductor mold; c. a blasting-unit regulator for setting one or more blasting parameters, wherein said blasting parameters comprise at least one of: the size and shape of said particles, a flow rate at which said particles are blasted, and a material-to-carrier ratio of the amount of said material to the amount of a carrier; d. an enclosure for containing noise, contaminants, gases and abrasives; e. an extractor for extracting at least one of the contaminants, the gases and the abrasives from the enclosure; f. a recycler for recycling the gases and the abrasives to be reused for removing the contaminants from the at least one portion of the semiconductor mold; g. a vacuum pump; and h. a vacuum hose connected with said vacuum pump, wherein said vacuum hose sucks contaminants removed from said portion through blasting, to avoid spillage of said contaminants.