Kolon CPI™ (Colorless Polyimide) varnish

Process Characteristics

  • High Viscosity Solution < 150 Ps
  • Low Yellow Index (YI) < 10
  • High glass transition temperature (Tg) > 300°C
  • Low Rth 60-300nm @ 10µm

General Characteristics

Properties of Kolon CPI™ Varnish

Grade E Grade F Grade G
Thickness (μm) 10 10 10
Transmittance (%) @(380-780nm) 87.6 88.2 88.5
Yellow Index 8.5 1.5 6.3
CTE(ppm/°C) @ (50-250°C)(2nd) 1.0 7.0 35.1
Tg (°C) >370 >340 >300
Td1wt% (°C) >500 >450 >390
Tensile Strength (MPa) >320 >270 >150
Elongation (%) >25 >30 >10
Modulus (GPa) 7.3 5.8 5.2
Potential Application TFT Substrate TSP Substrate TSP Substrate

process compatibility with TFT and OLED

Fabrication of 3.5″ QVGA AMOLED

  • Oxide TFT, Bottom Gate, Top Contact
  • Bottom Emission
  • Hybrid Encapsulation

Surface Roughness, TFT and OLED Characteristics

RMS <0.3nm

LaserLift-Off   


Compatible with LLO

Let’s discuss the possibilities

Interested in learning more?

Get in touch today to start a conversation about what you can do with Kolon CPI™
Colorless Polyimide Films, or to discuss further R&D with Kolon.

This technology (KL-0001) is owned by Kolon Industries, Inc. with intellectual property management and marketing support from Fuentek, LLC.