Challenges of 1.0 μm-pitch liquid crystal spatial light modulator for future high-quality electric holographic display

Takahiro Ishinabe; Kazuma Chida; Yoshitomo Isomae; Yosei Shibata; Hideo Fujikake

doi:10.1117/12.2650295

14 March 2023 Challenges of 1.0 μm-pitch liquid crystal spatial light modulator for future high-quality electric holographic display

Takahiro Ishinabe, Kazuma Chida, Yoshitomo Isomae, Yosei Shibata, Hideo Fujikake

Author Affiliations +

Proceedings Volume 12443, Advances in Display Technologies XIII; 1244304 (2023) https://doi.org/10.1117/12.2650295
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Electronic holographic displays precisely reconstruct the wavefront of object light and have attracted considerable attention for Virtual Reality (VR) and Augmented Reality (AR) applications. To achieve a high-quality holographic display with a wide field of view, it is necessary to reduce the pixel pitch of a spatial light modulator (SLM) to about 1 μm. We have achieved a precise control of Liquid Crystal (LC) alignment in 1 μm pitch pixels by exploiting the anisotropy of pixel space due to the lattice-shaped dielectric walls. In this paper, we have investigated the effect of LC-SLM structure on the image quality of electric holographic displays. As a result, we clarified that the image quality of phase-modulation type holographic displays does not degrade even when the number of gray levels is four or more and established a simple pixel structure that allows independent control of 1 μm pitch pixels and high image quality.

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Citation Download Citation

Takahiro Ishinabe, Kazuma Chida, Yoshitomo Isomae, Yosei Shibata, and Hideo Fujikake "Challenges of 1.0 μm-pitch liquid crystal spatial light modulator for future high-quality electric holographic display", Proc. SPIE 12443, Advances in Display Technologies XIII, 1244304 (14 March 2023); https://doi.org/10.1117/12.2650295

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