Wide viewing angle and fast responding TN LCD

S. Chandrasekhar; V. N. Raja; S. Krishna Prasad; D. S Shankar Rao

doi:10.1080/15421400490433163

Wide viewing angle and fast responding TN LCD

S. Chandrasekhar, V. N. Raja, S. Krishna Prasad, D. S Shankar Rao

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

A new type of TN display device has been fabricated by sandwiching a dual frequency addressable nematic liquid crystal material between two unrubbed polyimide coated glass plates. Between crossed polarizers, the bright state is observed by applying a high frequency electric field, while the dark state by applying a low frequency electric field of similar strength. This dual frequency addressed rubbing free device shows very wide and highly symmetric viewing angle characteristics, with contrast ratio comparable to that of a rubbed TN device, and with very fast response time. Addressing the device in a "dual frequency dual amplitude pulsed mode" leads to only a small increase (∼1.5 times) in power consumption in comparison with the conventional single frequency addressed device.

Original language	English
Journal	Molecular Crystals and Liquid Crystals
Volume	410
DOIs	https://doi.org/10.1080/15421400490433163
Publication status	Published - 01-12-2004
Externally published	Yes
Event	Proceedings of the 19th International Liquid Crystal Conference, ILCC2002 - Edinburgh, United Kingdom Duration: 30-06-2002 → 05-07-2002

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1080/15421400490433163

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title = "Wide viewing angle and fast responding TN LCD",

abstract = "A new type of TN display device has been fabricated by sandwiching a dual frequency addressable nematic liquid crystal material between two unrubbed polyimide coated glass plates. Between crossed polarizers, the bright state is observed by applying a high frequency electric field, while the dark state by applying a low frequency electric field of similar strength. This dual frequency addressed rubbing free device shows very wide and highly symmetric viewing angle characteristics, with contrast ratio comparable to that of a rubbed TN device, and with very fast response time. Addressing the device in a {"}dual frequency dual amplitude pulsed mode{"} leads to only a small increase (∼1.5 times) in power consumption in comparison with the conventional single frequency addressed device.",

author = "S. Chandrasekhar and Raja, {V. N.} and Prasad, {S. Krishna} and Rao, {D. S Shankar}",

year = "2004",

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journal = "Molecular Crystals and Liquid Crystals",

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T1 - Wide viewing angle and fast responding TN LCD

AU - Chandrasekhar, S.

AU - Raja, V. N.

AU - Prasad, S. Krishna

AU - Rao, D. S Shankar

PY - 2004/12/1

Y1 - 2004/12/1

N2 - A new type of TN display device has been fabricated by sandwiching a dual frequency addressable nematic liquid crystal material between two unrubbed polyimide coated glass plates. Between crossed polarizers, the bright state is observed by applying a high frequency electric field, while the dark state by applying a low frequency electric field of similar strength. This dual frequency addressed rubbing free device shows very wide and highly symmetric viewing angle characteristics, with contrast ratio comparable to that of a rubbed TN device, and with very fast response time. Addressing the device in a "dual frequency dual amplitude pulsed mode" leads to only a small increase (∼1.5 times) in power consumption in comparison with the conventional single frequency addressed device.

AB - A new type of TN display device has been fabricated by sandwiching a dual frequency addressable nematic liquid crystal material between two unrubbed polyimide coated glass plates. Between crossed polarizers, the bright state is observed by applying a high frequency electric field, while the dark state by applying a low frequency electric field of similar strength. This dual frequency addressed rubbing free device shows very wide and highly symmetric viewing angle characteristics, with contrast ratio comparable to that of a rubbed TN device, and with very fast response time. Addressing the device in a "dual frequency dual amplitude pulsed mode" leads to only a small increase (∼1.5 times) in power consumption in comparison with the conventional single frequency addressed device.

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DO - 10.1080/15421400490433163

M3 - Conference article

AN - SCOPUS:12844266840

SN - 1542-1406

VL - 410

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

T2 - Proceedings of the 19th International Liquid Crystal Conference, ILCC2002

Y2 - 30 June 2002 through 5 July 2002

ER -

Wide viewing angle and fast responding TN LCD

Abstract

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