Optical effects of adsorption of dyes on pigment used in electrophoretic image displays.
The optical properties of an electrophoretic image display (EPID) are affected by the surface interaction between pigment particles and dye used in the display. The amount of a particular dye adsorbed on the pigment surface has been determined quantitatively. The optical properties of suspensions have been improved through the use of sterically hindered dyes which reduce the extent of the surface interaction. A computer model of the optics of the system has shown that differences in the visible spectra of the dyes contribute negligibly to the improved optical properties.
Fitzhenry
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