Research of Liquid-Crystal Materials for a High-Performance FFS-TFT Display

Chen, Haiguang; Liu, Youran; Chen, Maoxian; Jiang, Tianmeng; Zhang, Lanying; Yang, Zhou; Yang, H. H.

doi:10.3390/molecules28020754

Cited by 11 publications

(6 citation statements)

References 23 publications

(17 reference statements)

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“…Furthermore, low printing accuracy and high roughness of the product surface printed by FDM strongly retard its further applications, particularly in producing oral films with high precision. Liquid crystal display (LCD) [ 25 , 26 ] is one of the photopolymerization-based 3D printing techniques [ 27 ], which could irradiate liquid resin to form a 3D entity, with ultraviolet light-emitting diodes as the light source and liquid crystal display as the imaging system. Notably, LCD printer equipment is small in size, which meets the development trend of desktop 3D printing.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional-Printed Oral Films Based on LCD: Influence Factors of the Film Printability and Received Qualities

Xia

et al. 2023

Pharmaceutics

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As an oral mucosal drug delivery system, oral films have been of wide concern in recent years because of their advantages such as rapid absorption, being easy to swallow and avoiding the first-pass effect common for mucoadhesive oral films. However, the currently utilized manufacturing approaches including solvent casting have many limitations, such as solvent residue and difficulties in drying, and are not suitable for personalized customization. To solve these problems, the present study utilizes liquid crystal display (LCD), a photopolymerization-based 3D printing technique, to fabricate mucoadhesive films for oral mucosal drug delivery. The designed printing formulation includes PEGDA as the printing resin, TPO as the photoinitiator, tartrazine as the photoabsorber, PEG 300 as the additive and HPMC as the bioadhesive material. The influence of printing formulation and printing parameters on the printing formability of the oral films were elucidated in depth, and the results suggested that PEG 300 in the formulation not only provided the necessary flexibility of the printed oral films, but also improved drug release rate due to its role as pore former in the produced films. The presence of HPMC could greatly improve the adhesiveness of the 3D-printed oral films, but excessive HPMC increased the viscosity of the printing resin solution, which could strongly hinder the photo-crosslinking reaction and reduce printability. Based on the optimized printing formulation and printing parameters, the bilayer oral films containing a backing layer and an adhesive layer were successfully printed with stable dimensions, adequate mechanical properties, strong adhesion ability, desirable drug release and efficient in vivo therapeutic efficacy. All these results indicated that an LCD-based 3D printing technique is a promising alternative to precisely fabricate oral films for personalized medicine.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional-Printed Oral Films Based on LCD: Influence Factors of the Film Printability and Received Qualities

Xia

et al. 2023

Pharmaceutics

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“…29 LC mixtures are mainly formulated by mixing an optical regulatory component, an electrical regulatory component, a LC diluter, and a wide-temperature modulation component. 30 The preferred optical regulatory components adopt a tolane or bistolane unit as the molecular skeleton to obtain high Dn and low T m . [31][32][33] Lateral fluorine substituents and terminal polar groups are utilized to obtain electrical regulatory components with large dielectric anisotropy (De) and low T m .…”

Section: Introductionmentioning

confidence: 99%

High birefringence liquid crystals with a wide temperature range and low melting point for augmented reality displays

Chen

Zhao

et al. 2023

Mater. Adv.

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“…For example, smart windows based on electro-, thermo-, gaso-, and photochromogenic materials can change transmittance for blocking intense visible light [ 3 , 4 , 5 , 6 , 7 ]. Benefiting from the large-scale processability, long-term stability, good flexibility, and high mechanical strength, a polymer-dispersed liquid-crystal (PDLC) system has become a mainstream solution [ 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

A Stable PDLC Film with High Ageing Resistance from an Optimized System Containing Rigid Monomer

Chen

Wang

et al. 2023

Molecules

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With the switchability between transparent and light-scattering states, polymer-dispersed liquid crystals (PDLC) are widely used as smart windows, flexible display devices, projectors, and other devices. In outdoor applications, in addition to excellent electro-optical properties, there is also a high demand for film stability. In this work, a PDLC film with high mechanical strength and structural stability is prepared that can maintain stability at 80 °C for 2000 h. By choosing liquid crystals with a wide temperature range, adopting acrylate polymer monomers containing hydroxyl groups, and adjusting the polymer content, the PDLC film can work well from −20 °C to 80 °C. On this basis, the effects of the introduction of rigid monomers on the mechanical properties and electro-optical properties of PDLC films are investigated.

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Research of Liquid-Crystal Materials for a High-Performance FFS-TFT Display

Cited by 11 publications

References 23 publications

Three-Dimensional-Printed Oral Films Based on LCD: Influence Factors of the Film Printability and Received Qualities

Three-Dimensional-Printed Oral Films Based on LCD: Influence Factors of the Film Printability and Received Qualities

High birefringence liquid crystals with a wide temperature range and low melting point for augmented reality displays

A Stable PDLC Film with High Ageing Resistance from an Optimized System Containing Rigid Monomer

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