Patent ID: 6561743
Filing Date: 2003-05-13
Classification: H01L,Y10S,Y10T

Abstract:
A pellet picking apparatus for separating a pellet adhered on an adhesive sheet from the sheet and picking the pellet this separated; the apparatus comprising:(a) a stage having a surface with which a lower face of the adhesive sheet is contacted; the pellet being adhered on an upper face of the sheet; the stage having a suction hole that pulls down the sheet; the suction hole having a suction end to be contacted with the sheet on the surface of the stage; the stage being movable to translate and rotate in a horizontal plane with respect to a specific reference position; and (b) a collet for holding the pellet by a suction force; the collet having a suction end to be contacted with the pellet; the collet being capable of holding the pellet by the suction force at the suction end; wherein when the sheet is placed on the surface of the stage in such a way that the pellet on the sheet is located at the reference position, the collet is controlled to hold the pellet by the suction force at the suction end and at the same time, the stage is controlled to hold the sheet at the suction end of the suction hole and to be moved in the horizontal plane with respect to the reference position to thereby detach the sheet from the pellet; and wherein the collet is controlled to pick the pellet this detached from the sheet.