TECHNOLOGY

WLP Technology

Roadmap

Item Typical 2016 2017 2018 technology
Max. Die Size  (√X*Y) [mm] 6 12 15 15 ・New solder ball for high reliability
Min. Die Size  (√X*Y) [mm] 1.0 0.5 <0.5 <0.5 ・New grinding tape for Min. Die size
Cu Redistribution Min. Line/Space [μm] 15/20 10/10 <10/10 <5/5 ・New photo resist for Cu redistribution
Cu Redistribution max. Thickness [μm] 5 - 7 12 >15 >15  
Scribe Line Width Min.[μm] 100 60 50 50 ・Dicing Equipment  Remodeling
Option          
  Body Min. Thickness [μm] (Normal) 550 - 400 300 <250 <250 ・New encapsulation resin for a low residual stress
Body Min. Thickness [μm] (DBG) 200 80 <80 <80 ・Stress release / New back grind tape
Max. Repassivation Thickness [μm] 4 - 6 12 15 >15 ・Development of Negative Polyimide
Narrow Pitch 0.4 0.2 0.15 <0.15 ・Solder Ball / U1 structure / Cu pillar
Max. Process Temp. [degree C] 350 250 230 230 ・New repassivation material for low temp and  low residual stress
 Except for reflow process as it is short time.
Solder Ball Size [μm] 200 90 80 60 ・Equipment for small ball / Improvement of ball mask
  Dry Polish   12/8inch 12/8inch 12/8inch ・transverse strength improvement (marking load)
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