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.

Inquiry

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)

Physical properties of optically isotropic films

Property	Unit	General PC
Property	Unit	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
Property		Unit	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
Wavelength Dispersion	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
Thickness	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
Retardation films
High retardation films

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.

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.