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Ultra-wide-view patterned polarizer type stereoscopic LCDs using patterned alignment.

Chao-Te Lee1, Hoang Yan Lin

  • 1Institute of Photonics and Optoelectronics, Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan.

Optics Express
|January 26, 2012
PubMed
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A novel patterned polarizer significantly reduces crosstalk in stereoscopic LCDs. This advancement offers clearer 3D viewing by improving image separation compared to conventional polarizers.

Area of Science:

  • Optics and Photonics
  • Display Technology
  • Materials Science

Background:

  • Stereoscopic Liquid Crystal Displays (LCDs) often suffer from crosstalk, degrading the 3D viewing experience.
  • Conventional circular polarizers using ±λ/4 retarders and positive C films have limitations in crosstalk reduction.
  • Existing fabrication techniques for display components can be adapted for new polarizer designs.

Purpose of the Study:

  • To develop and evaluate a novel patterned polarizer for reducing crosstalk in stereoscopic LCDs.
  • To compare the performance of the proposed patterned polarizer against conventional circular polarizers.
  • To demonstrate the feasibility of fabricating the new polarizer using existing patterned alignment techniques.

Main Methods:

  • The proposed patterned polarizer was designed, comprising a linear polarizer, a patterned retarder, and a biaxial film.

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  • Fabrication utilized the same patterned alignment technique as conventional components.
  • Crosstalk ratios were measured and compared for both proposed and conventional designs under various viewing angles and light incidence conditions.

    • Main Results:

    • The maximum crosstalk ratio was reduced from 0.1 to 0.016 at a ±60° viewing cone for obliquely passing light.
    • For normally passing light, the maximum crosstalk ratio decreased from 0.0167 to 0.0126 with rotated glasses.
    • The proposed structure demonstrated a significant improvement in image separation and reduced crosstalk.

    Conclusions:

    • The patterned polarizer offers superior crosstalk reduction for stereoscopic LCDs compared to conventional designs.
    • The proposed polarizer can be fabricated using established patterned alignment techniques, ensuring manufacturing compatibility.
    • This advancement holds potential for enhancing the visual quality and immersion of 3D display technologies.