Birefringence Compensation Film-NIBCOM
Combination of Polarizing Film and Birefringence Compensation Film.
Outline
By combining polarizing film with biaxial retardation film, we can supply products according to customer rests and specifications.
Structures(Ex.)
■ Application example for STN-LCD(Transparent type)
■ Wavelength dispersion characterristics
■ Wide viewing angle retardation film
The change of phase difference varies depending on the viewing angle and can controlled by controlling the three-dimensional refractive index.
■Applivaton viewing angle control of polarizing film by retardation folm
Retardation film improves the polarizer's performance beyond the axis.
<Comparison of the contrast between "polarizing film" and "polarizing film laminated with retardation film" >
| Without Retardation Film |
With Retardation Film |
|
【Measurement method(using retardation film)】
【Comparison of the transmittance between "polarizing film" and "polarizing film laminated with retardation film"】
Viewing angle
|
G1220DUN |
G1220DUN+NRF |
| θ=0 |
0.01% |
0.01% |
| θ=60° |
3.3% |
0.5% |
<Transmittance under axis crossed(at 550nm)>
Directional angle Φ=45° Viewing angle θ=60°