Patent ID: 8956954
Filing Date: 2015-02-17
Classification: H01L

Abstract:
1. A method of processing wafers for saving material and protecting environment, comprising the steps of: collecting a defective wafer; attaching a first sticky film to a back of the defective wafer; cutting said defective wafer into a plurality of separate dies; attaching a second sticky film to a front of the defective wafer so that the second sticky film is in direct contact engagement with the defective wafer and removing the first sticky film to expose backs of said separate dies; grinding the backs of said dies to allow each die to have a predetermined thickness; exposing said dies with the second sticky film attached thereto under an ultraviolet lamp to reduce stickiness of the second sticky film so as to help remove the second sticky film from the dies; and sequentially placing the grinded dies with completeness onto a carrying means.