P-135: Fast Bend Transition of the Pi-Cell at Low Temperature

Park, Jun Ho; Choi, Duk Woon; Choi, Kyung Ho; Kim, Tae Soo; Kim, Kee Doo; Yoon, Tae–Hoon; Kim, Jae Chang

doi:10.1889/1.2433608

Cited by 3 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the bend state should be initiated and grown under a high warm-up applied voltage ($20 V) until the splay state is fully removed after a certain warm-up time. 3) To maintain the bend state at a low voltage (V < V cr ), a maintenance bias or pulse voltage (V > V cr ) is necessary. 4,5) The nonbias-bend (NBB) method has been proposed to eliminate the warm-up time and the maintenance bias.…”

Section: Introductionmentioning

confidence: 99%

Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment

Kuo

Cheng

et al. 2009

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

We have investigated a new liquid crystal cell based on a nonchiral-doped optically compensated bend (OCB) mode. The average pretilt angle of this cell was higher than that of a conventional OCB cell; when undisturbed, the twist-to-splay energy barrier induced by topological differences remained in a twist state. We have called this twisted cell a twisted optically compensated bend (TOCB) cell. The TOCB cell does not require any warm-up time or warm-up voltage in electrical driving, and the response time of the TOCB cell was as fast as that of a conventional OCB cell. In this study, the TOCB cell was made using a polymer network pattern with high-pretilt-angle alignment, called a patterned-TOCB cell. The patterned-TOCB cell arose from the irradiation of UV light through a photomask and onto a pi cell, which was filled with nematic liquid crystal (NLC) and UV-curable polymer mixture upon a curing voltage being applied to it.

show abstract

Section: Introductionmentioning

confidence: 99%

Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment

Kuo

Cheng

et al. 2009

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

Effects of Pretilt Angle on Electro-Optical Properties of Optically Compensated Bend Liquid Crystal Devices With a Mixed Polyimide Alignment Layer

Lin

Chen

Lin

et al. 2016

J. Display Technol.

View full text Add to dashboard Cite

Performance enhancement using a stable low-pretilt molecular configuration and a novel driving method for optically compensated bend liquid crystal devices

Lin

Chen

et al. 2018

Opt. Lett.

View full text Add to dashboard Cite

A stable low-pretilt molecular configuration (SLPMC) is successfully developed in optically compensated bend (OCB) liquid crystal (LC) devices by simultaneously employing the curing voltage and surface-anchored crosslinking monomer during the polymerization process. For the SLPMC OCB cell with the low-bend state, the warm-up voltage making the LC molecules reorient from the splay to the bend state is annihilated, and the transient twist state occurring as the driven LC molecules recover from the bend to the splay state is also eliminated. In addition, with the novel driving method selecting the specific driving point, the proposed SLPMC OCB cell not only exhibits a good response performance, but also outputs a higher light transmittance, which is superior to the conventional OCB and no-bias-bend cells. This Letter demonstrates an effective SLPMC fabrication method, and points out the significant contributions of SLPMC on the electro-optical properties, which will benefit and enhance the performance design in OCB-based applications.

show abstract

P-135: Fast Bend Transition of the Pi-Cell at Low Temperature

Cited by 3 publications

References 2 publications

Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment

Study of Twisted Optically Compensated Bend Cell Using Patterned Alignment

Effects of Pretilt Angle on Electro-Optical Properties of Optically Compensated Bend Liquid Crystal Devices With a Mixed Polyimide Alignment Layer

Performance enhancement using a stable low-pretilt molecular configuration and a novel driving method for optically compensated bend liquid crystal devices

Contact Info

Product

Resources

About