LED makers can improve productivity with laser scribers as they move to 4″ and larger wafers
May 13, 2009
High volume LED makers reach for the lasers, from compoundsemiconductor.net
Diamond is not the best friend of manufacturers seeking to upgrade LED production from 2-inch to 4-inch diameter wafers, according to Electro Scientific Industries.
…laser scribing systems are significantly more economical than diamond tools for larger diameters.
…increased areas call for a proportionate increase in the number of – and therefore expenditure on – diamond scribers.
…“At the same time, you miss the opportunity of being very perfectly aligned in your scribes, and therefore you lose area that you could have devices on,”
… Laser scribing offers more precise alignment, avoiding this waste, the company claims.