Pixel-Division Technology for High-Quality Vertical-Alignment LCDs

Park, Seung Beom; Song, Jang‐Kun; Um, Yoonsung; Kim, Kyeong‐Hyeon

doi:10.1109/led.2010.2052777

Cited by 28 publications

(7 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HTAB belongs to the bromide group, which has a high affinity with ITO, and finally adheres to the ITO glass substrate. Owing to the polar nature of HTAB, the cyano groups of the LCs are expected to point towards HTAB [33]. Finally, LCs can be aligned vertically by the HTAB on the ITO glass substrates (Fig.…”

Section: Materials and Cell Fabricationmentioning

confidence: 99%

Evaluation of Surface-active Agent Hexadecyltrimethylammonium Bromide with Vertical Self-alignment Property to Align Liquid Crystals for Various Cell Gap Conditions

Ma¹,

Choi²,

Shin³

et al. 2022

Preprint

View full text Add to dashboard Cite

We evaluated hexadecyltrimethylammonium bromide (HTAB) for use in radio frequency (RF) applications in which liquid crystals (LCs) are used in layered structures that have various cell gap conditions. HTAB is a surfactant that can self-align vertically on the surface of indium tin oxide (ITO) substrates, and can induce homeotropic alignment of the LCs. For implementing RF devices with HTAB and LCs, we should consider limitations caused by the design conditions which are different from conventional liquid crystal displays such as cell gap. We quantified the concentration of HTAB ([HTAB]) that is necessary to form and maintain a sufficiently dense vertical alignment of 5CB (4-Cyano-4'-pentylbiphenyl). The required [HTAB] for full-homeotropic alignment was proportional to the cell gap until it was too large to support the transfer of the surface alignment to the LC, due to the weak anchoring nature of HTAB. We also showed the phase-change characteristic of the LC mixture depended on [HTAB] for the design of RF devices driven by light or heat. This work may help to guide the development of new approaches to designing efficient RF devices that use LCs.

show abstract

Section: Materials and Cell Fabricationmentioning

confidence: 99%

Evaluation of Surface-active Agent Hexadecyltrimethylammonium Bromide with Vertical Self-alignment Property to Align Liquid Crystals for Various Cell Gap Conditions

Ma¹,

Choi²,

Shin³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In addition to high transmittance, fast MPRT, and wide viewing angle, small gamma shift is also critically important for a display device. To quantify gamma shift, an off-axis image distortion index (D) has been defined [11]. Fig.…”

Section: Gamma Curvementioning

confidence: 99%

66‐2: High transmittance and fast response FFS LCD for AR and VR displays

Talukder

Huang

2019

Symp Digest of Tech Papers

View full text Add to dashboard Cite

By using a low viscosity material and new diamond-shaped electrode configuration, we report a fringe field switching liquid crystal display with high transmittance, fast response time, low operation voltage, wide viewing angle and indistinguishable gamma shift. Promising applications for high-resolution and image-blur-free displays, such as augmented reality and virtual reality, are foreseeable.

show abstract

“…Although a multi-domain VA mode offers better viewing angle characteristics than a single-domain VA mode, the transmittance of a multi-domain structure decreases because of the presence of disclination lines at the domain boundaries. The micropatterned VA mode has been proposed to enhance the transmittance; however, the cross-shaped disclination lines formed by domain boundaries at the center of the pixel remain [8][9].…”

Section: Introductionmentioning

confidence: 99%

High-transmittance Multi-domain Vertical Alignment Liquid Crystal Device with Protrusion Structure

Kim¹,

Jeon²,

Park³

et al. 2012

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

We propose a high-transmittance multi-domain vertical alignment liquid crystal device with a protrusion structure. Disclination lines, which inevitably appear at the boundaries of domains in a multi-domain structure, can be reduced by adding a protrusion structure on the top substrate. The transmittance was improved by 11% using the proposed structure with no change of either the dark state or the operating voltage.

show abstract

Pixel-Division Technology for High-Quality Vertical-Alignment LCDs

Cited by 28 publications

References 8 publications

Evaluation of Surface-active Agent Hexadecyltrimethylammonium Bromide with Vertical Self-alignment Property to Align Liquid Crystals for Various Cell Gap Conditions

Evaluation of Surface-active Agent Hexadecyltrimethylammonium Bromide with Vertical Self-alignment Property to Align Liquid Crystals for Various Cell Gap Conditions

66‐2: High transmittance and fast response FFS LCD for AR and VR displays

High-transmittance Multi-domain Vertical Alignment Liquid Crystal Device with Protrusion Structure

Contact Info

Product

Resources

About