Chip information character set generation system and method...

Details Chip information character set generation system and method... Chip information character set generation system and method...

2006-12-15

2008-11-11

Shechtman, Sean P (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C700S121000, C700S166000, C700S227000, C235S375000

Reexamination Certificate

active

07451010

ABSTRACT:
A chip information character set including a lot ID for chip-marking, which has a smaller number of characters than that of a conventional lot ID used in a fabrication line for a semiconductor device, is generated by coding the conventional lot ID using a decimal numeration system or a 62 decimal numeration system. A wafer identifier for chip-marking having 1-character is generated by coding a conventional number of a wafer using a set of identification symbols. A chip coordinate for chip-marking is having either 1-character or 2-characters is generated by coding a conventional coordinate of a chip in the wafer using the decimal or 62 decimal numeration system. The chip information character set has a simplified form to be written in a relatively short time, thereby increasing a productivity of the semiconductor device.

REFERENCES:
patent: 5350715 (1994-09-01), Lee
patent: 6179207 (2001-01-01), Bossen et al.
patent: 7062346 (2006-06-01), Takagi et al.
patent: 2007/0020782 (2007-01-01), Rathei
patent: 10-2002-0006061 (2002-09-01), None
patent: 10-2005-0008057 (2005-01-01), None

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