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Wide viewing angle polarization interference filter using double liquid crystal layers with opposite twisted

Rui Niu, Chi Zhang, Xiaoshuai Li

|November 23, 2021

Summary

We developed a wide viewing angle polarization interference filter (PIF) using liquid crystal layers. This novel PIF offers improved optical performance and high color saturation for display applications.

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Area of Science:

Optics
Materials Science
Display Technology

Background:

Polarization interference filters (PIFs) are crucial optical components.
Achieving wide viewing angles and high color saturation in PIFs remains a challenge.

Purpose of the Study:

To demonstrate a novel wide viewing angle polarization interference filter (PIF).
To analyze the optical performance and design principles of the PIF for color filter applications.

Main Methods:

Utilizing two crossed polarizers and double liquid crystal layers with opposite twist.
Employing the Jones matrix method to derive transmittance formulas.
Designing and analyzing blue, green, and red PIFs.

Main Results:

The PIF demonstrates a wide viewing angle of ±30°.
The inclusion of a compensation layer enhances optical performance.
High color saturation was achieved in the designed PIFs.

Conclusions:

The proposed PIF design offers a viable solution for wide viewing angle displays.
The derived transmittance formula enables the design of custom color filters.
The PIF exhibits excellent optical properties suitable for advanced display technologies.