CODING METHOD WITH DYNAMIC POSITIONING

• US 20050119778A1
• Filed: 11/28/2003
• Published: 06/02/2005
• Est. Priority Date: 11/28/2003
• Status: Abandoned Application

• Current Assignee: Taiwan E&M Systems Incorporated
• Original Assignee: Taiwan E&M Systems Incorporated
• Inventors: Wang, Shyang-Li, Hung, Shie Yu, Lin, Shian Chin, Tsai, Tung-Hung, Huang, Chai-Chih
• Application Number:
  US10/722,523
• Publication Number:
  US 20050119778A1
• Time in Patent Office: Days
• US Class Current: 700/121
• CPC Class Codes: H01L 21/67144 Apparatus for mounting on conductive members, e.g. leadframes or conductors on insulating substrates
• CPC Class Codes: H01L 21/67271 Sorting devices

Abstract

A coding method with dynamic positioning is used in a die pick-up process. The steps include picking up one of the dies and examining the dies for classifying the grade of the dies for deposit in their exclusive bin. In the meantime, the method classifies the excusive bin for each grade of die during the process, and continues to perform the die pick-up process until all the dies are picked-up.

Claims

1. A method of dynamic positioning coding for a die pick-up process, comprising the steps of;

a. picking up a die;

b. testing said die to establish a grade thereof;

c. determining if a bin has been assigned to said established grade and if said bin has not been assigned, assigning said established grade to correspond with a closest available bin; and

d. picking up said tested die and depositing said tested die into said assigned bin.

2. The method of the claim 1, wherein further comprising the step of:

e. determining whether there is another die to be picked up and repeating steps a-e if there is another die.

3-8. -8. (canceled)