Patent ID: 9486842
Filing Date: 2016-11-08
CPC Classification: B08B

Claim Text:
1. An ultraviolet light based cleansing method, comprising the following steps: (1) irradiating a substrate to be cleansed with ultraviolet light having a wavelength of 172 nm and controlling output energy of the ultraviolet light to be less than or equal to 130 mj/cm (2) cleansing the substrate to be cleansed with an alkaline solution; (3) cleansing the substrate to be cleansed with water/gas dual-fluid; (4) cleansing the substrate to be cleansed with deionized water; (5) drying the substrate to be cleansed with an air knife; and (6) subjecting the substrate to be cleansed to dehydration and drying to complete the cleansing operation.