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°

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