Abstract:
The invention is directed to compositions of display cell structure (20) and electrode protecting layers for improving the performance of display devices. The composition comprises a polar oligomeric or polymeric material having a glass transition temperature below about 100 degrees C, and the resulting display cells or electrode protecting layer have an average crosslinking density of below about 1 crosslink point per 80 Dalton molecular weight.
Abstract:
The invention is directed to compositions of display cell structure and electrode protecting layers for improving the performance of display devices. The composition comprises a polar oligomeric or polymeric material having a glass transition temperature below about 100°C, and the resulting display cells or electrode protecting layer have an average crosslinking density of below about 1 crosslink point per 80 Dalton molecular weight.
Abstract:
This invention relates to an electrophoretic display having display cells filled with an electrophoretic composition which comprises a bi-modal particle system dispersed in a dielectric solvent or solvent mixture. The term "bi-modal" refers to an electrophoretic dispersion comprising two types of particles of distinctly different sizes and size distribution. The first type is a primary pigment particle while the second type is a filler particle having a size small enough to fit inside the interstices formed by the particles of the first type. The two types of particles have substantially the same switching rate. The display has shown a higher % reflectance or whiteness, a higher contrast ratio, improved threshold characteristics and better bistability.