Sheets & Films

Polycarbonate (PC) Film PURE-ACE®

Introduction and Features

PURE-ACE® is high-transparency and high-quality polycarbonate films produced in cleanroom. Under strict quality controls, we have comprehensive production system from raw materials to products, in order to respond to market demand accurately.
As optical classifications, we have optical isotropic films with small in-plane retardation and optical anisotropic (phase difference) films.

Features

Main grades

Resin Grade Feature Thickness (µm) Application example
General PC D, L Optical isotropic
(Low retardation)
25 ~ 100 Substrate film
GR, GS, GT Retardation 30 ~ 70 Optical compensation for LCD
3D glasses
KJ, KL High retardation 
(≧3000nm)
125 ~ 300 Polarized glasses
anti-rainbow
Modified PC RM Retardation
(Reverse wavelength dispersion)
~ 60 Anti-reflection for OLED
(1/4 retardation)

Grade Lists

Physical properties of optically isotropic films

Property Unit General PC
D L
Thickness µm 25 ~ 100 40 ~ 100
Density - 1.20 1.20
Refractive index - 1.58 1.58
Glass transition temperature 145 145
CTE ×10-4/℃ 80 80
Water absorption coefficient % 0.2 0.2
Young's modulus MPa 2,600 2,300
Tensile strength MPa 56 60
Tensile elongation % < 10 > 80
Thermal shrinkage % < 0.1
@140℃
< 0.1
@140℃
Haze % 0.1 0.1
Total light transmittance % 90 90
  • *Above chart shows representative values, not guaranteed values

Physical properties of retardation films

Property Unit General PC Modified PC
GT GS GR KL KJ RM
Thickness µm 30 ~ 40 60 70 125 300 53
Density - 1.20 1.20 1.20 1.20 1.20 1.18
Refractive index - 1.58 1.58 1.58 1.58 1.58 1.54
Glass transition temperature 145 145 145 150 150 138
CTE ×10-4/℃ 80 80 80 80 80 75
Retardation nm 120 ~ 430 120 ~ 140 120 ~ 580 > 3,000 > 3,000 147
Nz coefficient
(nx-nz)/(nx-ny)
- 1.0 1.0 1.0 1.0 1.0 1.2
Wavelength Dispersion Re450/Re550 - 1.10 1.10 1.10 1.10 1.10 0.90
Re650/Re550 - 0.96 0.96 0.96 0.96 0.96 1.04
Photoelasticity cm2/dyne 80 80 80 80 80 15
Haze % 0.1 0.1 0.1 0.1 0.1 0.1
Total light transmittance % 90 90 90 90 90 91
  • *Above chart shows representative values, not guaranteed values

Physical properties of high retardation films

Property Unit PURE-ACE® Panlite®film
Stretched Unstretched Unstretched Unstretched
KJ/KL-3000 PC-2151 PC-1151 D-100
Thickness Average µm 125/300 125 ~ 300 300 ~ 500 100
Range ±10 ±10 ±10 ±1
Retardation nm > 3,000 ~ 200 ~ 500 < 10
Total light transmittance > 86 > 86 > 86 > 89
Haze < 1.0 < 1.0 < 1.0 < 1.0
Glass transition temperature 150 150 150 145
Tensile modulus MPa 2,300 2,300 2,300 2,300
Tensile strength MPa - 61 61 60
Note - High retardation Standard Standard Low retardation
  • *Above chart shows representative values, not guaranteed values

Engineering Service

Optical isotropic films

Example use of optical isotropic film

Displays using optically isotropic PC films eliminates rainbow patterns when being looked through by polarized sunglasses, while displays using PET based materials cannot eliminate those patterns due to retardation.

Retardation Films

Retardation wavelength dispersion of retardation films
Usage example of optical isotropic films

Anti-reflection for OLED
Anti-reflection by polarizing plate is indispensable for OLED(organic EL display)with large reflection of ambient light. Reverse wavelength dispersion films are required in such cases.

Example use of optical isotropic film

High retardation films

Usage example use of high retardation films

PC films KJ-3000 (300µm) and KL-3000 (125µm) are with retardation of 3000nm or more.

By using high retardation films, colored interference fringes due to bending can be eliminated, improving appearance quality of the polarizing lens, and reducing discomfort when wearing.