Ultra low  CTE  anisotropic

DuPont™ Kapton® EN-A, EN-C, EN-Y, and EN-Z are the premium  performance polyimide fifilms for use as a dielectric substrate for  chip on film, flflexible printed circuits and high density  interconnects.  

These polyimide films show superior surface quality, high  modulus, and excellent CTE control, which makes them  preferred dielectric films for very fine pitch circuity and next  generation IC packaging application

Applications

• Chip on Film (COF) 

• Metallized FPC 

• Semiconductor  

• Package TFT 

Key Features

• Very low surface roughness, ideal for sputtering processes 

• Wide CTE line ups from ultra low to low, targetting to match  various materials silicone, glass, and copper. 

• Stable dimensional stability over wide temperature range