HOME All Products Optical and Display Materials：High-Precision Optical Films

Optical and Display Materials High-Precision Optical Film

Product name

ELMECH™ is an optical film that utilizes the high transparency of polycarbonate.
It is used for a retardation film of displays and various substrates such as touch sensors.

High-Precision Optical Films

ELMECH™

Features

  • Good film thickness uniformity
  • Highly controlled and uniform optical properties
  • Flexible support for various retardation film

Applications

LCD applications (LCD monitors, notebook PCs, mobile phones, etc.)– For easy-to-see, beautiful LCD screens –
  • Optical compensation film for improving contrast and expanding the viewing angle
  • Linearly polarized/circularly polarized film for reflective LCD panels
－ Various applications as an optical film －
  • Anti-reflection film for OLED panels
  • Substrate film for touch panels and OLED panels

Examples of use

Transmissive LCD panel, reflective LCD panel structure and ELMECH retardation film application

LCD panel
(Monitors, TVs, laptops, etc.)

LCD panel

Reflective LCD panel structure
(Mobile terminals, etc.)

Reflective LCD panel structure

Display with touch sensor
Display structure

Display with touch sensor

Related Sites

  • Shiga Manufacturing Site
    Location: Otsu-shi, Shiga, Japan

Optical isotropic film

A polycarbonate film with high transparency and a wide range of thicknesses.
It is used for various substrate films such as touch panels, etc….

Features

  • Good film thickness uniformity
  • Wide widths (1300mm)

Characteristic

Basic characteristics
Item Unit Grade Measurement method
R-film non-stretched product
Thickness μm 20 ～ 100 Dial gauge
Retardation Re nm 5 ～ 30 Retardation meter
Total light transmittance ％ 91 JIS K7361
Haze ％ 0.7 or less JIS K7136
Refractive index ー 1.58 Abbe refractometer
Glass transition temperature Tg ℃ 153 DSC
These data are not guaranteed values but the typical measurement values at our company.
Physical characteristics
Item Unit Grade Measurement method
R-film non-stretched product
Tensile strength MD MPa 105 ASTM D882 compliant
TD 106
Tensile elongation MD ％ 168 ASTM D883 compliant
TD 163
Tensile modulus MD GPa 2.05 ASTM D884 compliant
TD 2.09
These data are not guaranteed values but the typical measurement values at our company.
Durability
Item Unit Initial value Heat resistance (80℃Dry) Humidity & heat resistanc (60℃/90%RH) Low temperature resistance (-30℃)
After 500 hrs After 1000 hrs After 500 hrs After 1000 hrs After 500 hrs After 1000 hrs
Tensile strength MD MPa 105 106 107 110 108 108 107
TD 106 104 108 108 104 110 110
Tensile elongation MD ％ 168 161 161 167 164 160 161
TD 163 161 163 164 161 162 162
Tensile modulus MD GPa 2.05 2.1 2.0 2.1 2.1 2.0 2.0
TD 2.09 2.0 2.1 2.0 2.0 2.1 2.1
These data are not guaranteed values but the typical measurement values at our company.

Retardation Film

These are a polycarbonate retardation films with a wide range of thicknesses and retarations.
It is used as an optical compensation film to improve the display’s contrast and expand the viewing angle.

Features

  • Good retardation uniformity
  • Good film thickness uniformity
  • Supports wider widths
  • Thin retardation film about 40 μm (R40-film)

Characteristic

Basic characteristics
Item Unit Grade Measurement method
R-film R40-film
Thickness μm 58 ～ 65 38 ～ 43 Dial gauge
Retardation Re nm 125 ～ 604 138 ～ 570 Retardation meter
Optical axis ° ±0.5 ±0.5 Retardation meter
Nz coefficient ー 1.0 1.0 Retardation meter
Total light transmittance ％ 91 91 JIS K7361
Haze ％ 0.7 or less 0.7 or less JIS K7361
Refractive index ー 1.58 1.58 Abbe refractometer
Glass transition temperature Tg ℃ 153 153 DSC
Photoelastic coefficient 10-12Pa-1 84 84 Kaneka method
These data are not guaranteed values but the typical measurement values at our company.
Thickness and Retardation other than those in the table above are also available.
Durability
Item Unit Grade Measurement method
R140 R435 R570
Heating shrinkage （MD） % -0.07 -0.04 -0.08 Kaneka method
（90℃ 120 minutes）
（TD） % -0.06 -0.02 -0.08
Durability※ Retardation change nm ±2 ±2 ±3 Retardation meter
Dimensional change % ±0.2 ±0.2 ±0.2 Kaneka method
Haze change % ±0.1 ±0.1 ±0.1 JIS K7136
These data are not guaranteed values but the typical measurement values at our company.
※Durability test conditions

・High temperature test 80℃ 1000 hours
・High temperature and high humidity test 60℃，90％RH 1000 hours
・Low temperature test -30℃ 1000 hours
・Light resistance test 400W mercury lamp, 1000 hours

【Precautions for Use】

The above mentioned product is intended for non-food applications.
Please inform us what the application is in advance so to ensure the best possible technical support regarding safety.
The information contained herein is based on materials, information and data available at this time and is subject to revision based on new findings.
In addition, the precautions listed are intended for normal handling, and if special handling is required, please take specific safety precautions apt for your application and usage.
The information contained herein is provided for informational purposes only and is not guaranteed.