Patent ID: 6226394
Filing Date: 2001-05-01
Classification: G05B,H01L,Y02P

Abstract:
A method for tracking multiple lots of a plurality of integrated circuit devices through an assembly step in an integrated circuit manufacturing process, each integrated circuit device of the plurality of integrated circuit devices having a mounting substrate, the method comprising:providing a mounting substrate;providing a plurality of integrated circuit devices;placing a substantially unique identification code on the mounting substrate in a readable position thereon;placing an identification code on the each integrated circuit device of the plurality of integrated circuit devices;associating the identification code of the integrated circuit device with a substrate code:mounting at least one of the plurality of integrated circuit devices on the mounting substrate;reading the mounting substrate identification code of the each integrated circuit device of the plurality of integrated circuit devices in each lot of the multiple lots;advancing the plurality of integrated circuit devices in the multiple lots through a series of assembly steps in the manufacturing process in a substantially continuous manner;generating data related to the advancement of the each integrated circuit devices of the plurality of integrated circuit devices through the assembly step; andassociating the data generated for the each integrated circuit device of the plurality of integrated circuit devices with the mounting substrate identification code of its associated integrated circuit device so the multiple lots of the plurality of integrated circuit devices may be tracked through the assembly step.