2004
DOI: 10.1080/15980316.2004.9651945
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Biaxial integrated optical film for VA mode LCD's made from in‐situ photopolymerised reactive mesogens

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Cited by 5 publications
(5 citation statements)
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“…To overcome the poor off-axis image quality issues, optical compensation films that are fabricated by elongating polymers along one or two directions are typically used. Due to the aforementioned advantages of RM films over the conventional polymer films, there have been many attempts to replace polymer compensation films with RM films [14][15][16]. The main advantages of RM retardation films for optical compensation are (i) a wide range of birefringence structures, (ii) micropatterning of retardation films, and (iii) in-cell-type fabrication using coating processes.…”
Section: Rm Films For Optical Compensation and Retardermentioning
confidence: 99%
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“…To overcome the poor off-axis image quality issues, optical compensation films that are fabricated by elongating polymers along one or two directions are typically used. Due to the aforementioned advantages of RM films over the conventional polymer films, there have been many attempts to replace polymer compensation films with RM films [14][15][16]. The main advantages of RM retardation films for optical compensation are (i) a wide range of birefringence structures, (ii) micropatterning of retardation films, and (iii) in-cell-type fabrication using coating processes.…”
Section: Rm Films For Optical Compensation and Retardermentioning
confidence: 99%
“…The negative C-type RM film can be obtained using cholesteric liquid crystal (CLC) RM compounds with high helical twist power (Figure 2(c)), in which the optical helical pitch does not overlap with the wavelengths of visible light [20]. A technology for fabricating biaxial RM films using CLC RM materials containing dichroic photoinitiators was also developed through exposure to polarized UV light instead of unpolarized UV light [16,21]. As shown in Figure 2(c), the refractive index along the direction of the polarization of light is greater than that normal to it within the film plane.…”
Section: Rm Films For Optical Compensation and Retardermentioning
confidence: 99%
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“…The presence of two polymerisable groups ensures that the desired LC structure within the polymer film is firmly fixed and independent of any temperature variations. On the other hand, recent publications have made use of the difference in rate of polymerisation between bireactive and monoreactive PLCs to achieve more sophisticated optical designs in the LC film, such as films with biaxial optical properties [5]. It is, thus, desirable to also have available a monoreactive PLC material that is well compatible with a bireactive PLC.…”
Section: Requirements For Plcs For Optical Filmsmentioning
confidence: 99%
“…The deformed cholesteric liquid crystal (LC) nanostructure is induced by the exposure of polarized ultraviolet (UV) light with a rod-like dichroic photoinitiator. These films can be applied for compensation of VA-LCDs [4,5]. This method has a great potential to control retardations and has an extremely high temperature and moisture stability.…”
Section: Introductionmentioning
confidence: 99%