Super-Fast Optically Rewritable Liquid-Crystal Display Enabled by MoS2-Doped PI Bumpy Alignment Layer

Shining Gao, Yang Liu, Dae Shik Seo

Research output: Contribution to journalConference articlepeer-review


A super-fast optically rewritable liquid crystal display (ORLCD) has been developed using a MoS2 nano-flakes doped polyimide (PI) hybrid thin layer in this paper. The MoS2 hybrid thin layer was prepared by directly doped MoS2 nano-flakes in PI solution, and is of high transparency over 85% in the visible range of 480 to 780 nm including a substrate. Liquid crystals (LCs) were antiparallelly aligned between rubbed MoS2 hybrid thin layer and optically oriented SD1 thin layer, and subsequently were realigned by polarized blue laser irritation in multi-domains. The realignment of LCs generates visible optical changes under polarized optical microscope (POM) and makes the written information readable. The rewriting time in which LCs are optically switched to achieve the highest contrast was also found remarkably reduced by MoS2 nano-flakes. In specific, by using a 1% MoS2 nano-flakes doped PI hybrid thin layer, the rewriting time has been reduced to 37.36s, which is about 46.41% decrease compared with pure PI cell. The accelerated rewriting time here is believed mainly caused by strengthened anchoring of LCs on bumpy hybrid thin layer due to MoS2 nano-flakes agglomeration, which super-fast actualizes the high optical contrast in domains. These findings will significantly contribute to a wide range of research and applications of ORLCD.

Original languageEnglish
Pages (from-to)1449-1451
Number of pages3
JournalDigest of Technical Papers - SID International Symposium
Issue number1
Publication statusPublished - 2022
Event59th International Symposium, Seminar and Exhibition, Display Week 2022 - San Jose, United States
Duration: 2022 May 82022 May 13

Bibliographical note

Publisher Copyright:
© 2022. John Wiley and Sons Inc. AIAA. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Engineering(all)


Dive into the research topics of 'Super-Fast Optically Rewritable Liquid-Crystal Display Enabled by MoS2-Doped PI Bumpy Alignment Layer'. Together they form a unique fingerprint.

Cite this