Patent ID: 8026126
Filing Date: 2011-09-27
Classification: H01L

Abstract:
1. An apparatus for detachment of a thin die from a film, the film having a adhesive surface an which a plurality of dice are mounted, the apparatus comprising: an ejector device comprising a plurality of ejector pins, the ejector pins being operative to initiate detachment of a die from the film by contacting the film under the die on a second surface of the film opposite the adhesive surface substantially at the corners of the die within a predetermined distance from the edges of said die and by raising the film under the corners of the die; and a collet operative to detach the die from the film after detachment has been initiated by the ejector device, and to hold the die after detachment from the film; wherein the predetermined distance is less than 1.2 mm from the edges of the die where the die is a silicon die of between 3 mm to 8 mm in width and less than 0.15 mm thickness, the film has a thickness of approximately 0.1 mm and an interfacial adhesive strength between the die and the adhesive surface is less than 15 Joules per meter square.