Preparation of reverse mode polymer dispersion liquid crystals with vertically oriented layers and the electro-optical properties

Miao, Zongcheng; Zheng, Jiasong; Chu, Yaqin; Yang, Haiyan; Gao, Jianjing; Wang, Dong; Wang, Lei

doi:10.1080/02678292.2023.2182380

Cited by 3 publications

(1 citation statement)

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“…Zhou et al [ 21 ] investigated the effect of polymer network morphology on the electro-optical properties of polymer-stabilized liquid crystals and showed that the polymer network density and strength decreased with the increase of the monomer acrylate, resulting in a significant decrease in the threshold voltage and response time, which led to a decrease in the contrast ratio as well. Miao et al [ 22 ] prepared polymer-dispersed liquid crystals with vertical orientation and explored the effects of diluent, negative liquid crystal, and Gd 2 O 3 nanoparticle content on their electro-optical properties. The results showed that the polymer-dispersed liquid crystal devices doped with Gd 2 O 3 nanoparticles had lower off-state transmittance and higher contrast, as well as a longer lifetime and better aging resistance.…”

Section: Introductionmentioning

confidence: 99%

Tuning Electro-Optical Characteristics through Polymerization Monomer Content in PSVA Liquid Crystal Displays: Simulation and Experimentation

Zhang,

Lin,

Liu

et al. 2024

Polymers

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The enhancement of display performance and durability in polymer-stabilized vertical alignment liquid crystal and the liquid crystal are negative liquid crystals, which can be vertically aligned under the action of a vertical orientation layer and an electric field. Devices (PSVA LCDs) are crucial for advancing LCD technology. This study aims to investigate the electro-optical characteristics of PSVA LCDs by varying polymerization monomer concentrations. Using both simulations via TechWiz LCD 3D and experimental methods, such as polymer-induced phase separation, we developed an optoelectronic testing framework to assess voltage transmittance and response times. In our main findings, we show that an increase in polymeric monomer concentration from 3% to 7% resulted in a 67% increase in threshold voltage and a 44% decrease in saturation voltage. The on-state response time increased by about a factor of three, while the off-state response time decreased by about a factor of three. The alignment of our simulation results with experimental data validates our methodology, offering the potential of simulation tools as a pivotal resource in the PSVA LCDs. The alignment of our simulation results with experimental data validates our methodology, offering the potential of simulation tools as a pivotal resource in the PSVA LCDs. These advancements promise significant improvements in PSVA LCD performance and durability.

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Section: Introductionmentioning

confidence: 99%