Patterned waveguide liquid crystal displays

Shin, Young Sik; Jiang, Jinghua; Qin, Guangkui; Wang, Qian; Zhou, Ziyuan; Yang, Deng‐Ke

doi:10.1039/d0ra07016e

Cited by 9 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The working wavelength of the incident continuous-wave laser beam is 405 nm. The driving alternating voltage (AC) of square wave is set at a frequency of 1 kHz and 400 peak-to-peak value (Vpp) 39,40 . Figure 2a ( ) shows the simulated images of diffraction patterns propagating along the z-axis at speci c distance: z = 0, 335.0, 1401.0, 3188.0, and 4176.0 µm.…”

Section: Modulation Of Diffraction Patternsmentioning

confidence: 99%

Dynamic photomask directed lithography based on electrically stimulated nematic liquid crystal architectures

Shui,

Liu,

Yang

et al. 2024

Preprint

View full text Add to dashboard Cite

Lithography technology is a powerful tool for preparing complex microstructures through projecting the patterns of static templates with permanent features onto samples. To simplify fabrication and alignment processes, dynamic photomask for multiple configurations preparation becomes increasingly noteworthy. Hereby, we report a dynamic photomask by assembling the electrically stimulated nematic liquid crystal (NLC) into multifarious architectures. We demonstrate that these architectures give rise to reconfigurable and switchable diffraction patterns via electrically modulating the hybrid phase arising from the NLC molecules. These electrically configurable diffraction patterns are adopted as metamask to produce multiple microstructures with height gradients in one-step exposure and hierarchical microstructures through multiple in-situ exposures using standard photolithography. The fabricated pattern has feature size about 3.2 times smaller than the electrode pattern and can be transferred onto silicon wafer via etching. This strategy can be extended to design diverse microstructures with great flexibility and controllability, offers a promising avenue for fabricating metamaterials via complex structures with simplified lithography processes.

show abstract

Section: Modulation Of Diffraction Patternsmentioning

confidence: 99%

Dynamic photomask directed lithography based on electrically stimulated nematic liquid crystal architectures

Shui,

Liu,

Yang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…When an electric field is applied across the PSNLC, the LCs reorient and are turned into a poly-domain structure because of the aligning effect of the polymer network. Then, part of the incident light is scattered and comes out of the viewing side of the display [16]. By introducing polymer walls in reverse-mode, PSNLC films with photomasks show excellent stability regarding their electro-optical properties [17].…”

Section: Psnlcsmentioning

confidence: 99%

A Review of Developments in Polymer Stabilized Liquid Crystals

Li²,

Zhong

2023

Polymers

View full text Add to dashboard Cite

Polymer-stabilized liquid crystals (PSLCs) are multi-functional materials consisting of polymer networks in a continuous phase of liquid crystals (LCs), of which polymer networks provide anchoring energy to align the LCs. A number of improvements are detailed, including polymer-stabilized nematic liquid crystals (PSNLCs), polymer-stabilized cholesteric liquid crystals (PSCLCs), polymer-stabilized blue phase liquid crystals (PSBPLCs), polymer-stabilized smectic liquid crystals (PSSLCs), polymer-stabilized ferroelectric liquid crystals (PSFLCs), and polymer-stabilized antiferroelectric liquid crystals (PSAFLCs) in this review. Polymer stabilization has achieved multiple functionalities for LCs; in smart windows, a sufficiently strong electric field allows the LCs to reorient and enables switching from a scattering (transparent) state to a transparent (scattering) state. For broadband reflectors, the reflection bandwidth of LCs is manually tuned by electric fields, light, magnetic fields, or temperature. PSBPLCs open a new way for next-generation displays, spatial light modulators, sensors, lasers, lenses, and photonics applications. Polymer networks in PSFLCs or PSAFLCs enhance their grayscale memories utilized in flexible displays and energy-saving smart cards. At the end, the remaining challenges and research opportunities of PSLCs are discussed.

show abstract

“…In previous papers [17][18][19][20], we reported the light waveguide LCD which is enabled by light scattering of polymer stabilized LC. When no voltage is applied, the LC is uniformly oriented and exhibits no scattering, the incident light does not come out of the viewing side of the display.…”

Section: Introduction `mentioning

confidence: 99%

38‐5: Student Paper: Waveguide Liquid Crystal Display with Light Waveguide Plate for Transparent Display

Shin

Zhou

Wang

et al. 2021

Symp Digest of Tech Papers

Self Cite

View full text Add to dashboard Cite

We report a transparent display based on light waveguide liquid crystal display (LCD) under illumination of a light waveguide plate. LED is installed on the edge of the display. The generated light is coupled into the LCD by the light waveguide plate. In the voltage‐off state, the LC is transparent, and the incident light is waveguided through the display and no light comes out of the viewing side of the display. When a voltage is applied, the LC become scattering, and the incident light is scattered out of the viewing side of the display. The spatial uniformity of the light intensity of the display is significantly improved by the light waveguide plate. The transparent display has the merits of high contrast ratio, suitable driving voltage, and a sub‐milli second ultrafast response time. Furthermore, it does not need polarizers and color filter, and thus has a very high transmittance in the voltage‐off state.

show abstract

Patterned waveguide liquid crystal displays

Abstract: A polymer stabilized LC based light waveguide display is reported. Performance is improved by patterned photo-polymerization or electrode. It has high brightness, ultrafast switching time, high contrast ratio, and high transmittance for transparent and augmented displays.

Cited by 9 publications

References 37 publications

Dynamic photomask directed lithography based on electrically stimulated nematic liquid crystal architectures

Dynamic photomask directed lithography based on electrically stimulated nematic liquid crystal architectures

A Review of Developments in Polymer Stabilized Liquid Crystals

38‐5: Student Paper: Waveguide Liquid Crystal Display with Light Waveguide Plate for Transparent Display

Contact Info

Product

Resources

About