Takeo Kakinuma

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.

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.