Naoki Hiji

50.2: Cholesteric Liquid Crystal Micro-Capsules with a Perpendicular Alignment Shell for Photo-Addressable Electronic Paper

Cholesteric liquid crystal micro-capsules (CLC-MCs) with a perpendicular alignment shell were investigated. The CLC-MC cell showed high contrast ratio up to 17:1, reflectance over 30% and uncolored white appearance in bright state. A photo-addressable electronic paper using the CLC-MC and an organic photoconductor was also demonstrated.

23.3: A Novel Photoaddressable Electronic Paper Utilizing Cholesteric LC Microcapsules and Organic Photoconductor

A novel photoaddressable electronic paper has been developed. It has a spatial light modulator (SLM) structure that consists of microencapsulated cholesteric liquid crystal and an organic photoconductive layer between flexible plastic thin films. An A6- size prototype E-Paper sheet exhibits greater than 20% reflectivity, a 4:1 contrast ratio and a wide viewing angle. Images transferred by the projection of a 2D image with a 200 ms electrical pulse exhibit nonvolatility without power and excellent stability against deformation of the sheet.

60.3: High Resolution Electronic Paper Based on LED Print Head Scanning Exposure

The resolution of photo-addressable electronic papers has been limited to 200dpi due to the resolution of conventional optical modulators used for the electronic paper printer. We have realized the scanning exposure printing of the photo-addressable electronic paper and achieved 600dpi resolution with a LED print head.

40.3: Novel Anchoring Stabilization Method for High-Temperature Storage in Cholesteric Liquid Crystal Microcapsules Using Nano-Particles Deposited on the Shell

A conventional bistable cholesteric liquid crystal microcapsule cell has had insufficient image stability for high-temperature storage due to its anchoring instability. In this report, a novel anchoring stabilization method using nano-particles deposited on the shell is proposed. This method enables high anchoring stability up to a storage temperature of just 10°C below the clearing point.