Paper Abstract and Keywords |
Presentation |
2022-01-27 16:30
Twisted Nematic Liquid crystal Display without Threshold Voltage Rumiko Yamaguchi, Shunya Kawata (Akita Univ.) EID2021-4 Link to ES Tech. Rep. Archives: EID2021-4 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In a hybrid aligned nematic (HAN) cell, a liquid crystal (LC) is sandwiched between planer and homeotropic alignment surfaces. Moreover, a “twisted hybrid aligned (THA) orientation cell has been proposed. We have numerically analyzed LC director distributions between the strong polar anchoring of the planar surface and the weak polar anchoring of the homeotropic surface in the THA cell. When the polar anchoring of the homeotropic surface is lower than a critical one, the cell orientation shows a conventional TN orientation and we call this LC cell a quasi TN cell. The relationship between elastic constants (splay, twist and bend) of the liquid crystal and the critical anchoring strength is analyzed. A spontaneous twisting pitch length also affects to the critical anchoring. Electro-optical properties are also calculated. The transmittance can be switched from 100% to 1% by applying approximately 0.5 V (normally white mode). When the applied voltage is more than 1 V, it becomes 0.1% or less at 1 V or more. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
liquid crystal / twisted nematic / weak anchoring / low driving voltage / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 353, EID2021-4, pp. 1-4, Jan. 2022. |
Paper # |
EID2021-4 |
Date of Issue |
2022-01-20 (EID) |
ISSN |
Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
EID2021-4 Link to ES Tech. Rep. Archives: EID2021-4 |
Conference Information |
Committee |
ITE-IDY EID IEE-EDD SID-JC IEIJ-SSL |
Conference Date |
2022-01-27 - 2022-01-28 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online (Zoom) |
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Paper Information |
Registration To |
EID |
Conference Code |
2022-01-IDY-EID-EDD-JC-SSL |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Twisted Nematic Liquid crystal Display without Threshold Voltage |
Sub Title (in English) |
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liquid crystal |
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twisted nematic |
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weak anchoring |
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low driving voltage |
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1st Author's Name |
Rumiko Yamaguchi |
1st Author's Affiliation |
Akita University (Akita Univ.) |
2nd Author's Name |
Shunya Kawata |
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Akita University (Akita Univ.) |
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Speaker |
Author-1 |
Date Time |
2022-01-27 16:30:00 |
Presentation Time |
15 minutes |
Registration for |
EID |
Paper # |
EID2021-4 |
Volume (vol) |
vol.121 |
Number (no) |
no.353 |
Page |
pp.1-4 |
#Pages |
4 |
Date of Issue |
2022-01-20 (EID) |