Microspheres for electrophoretic displays and methods of manufacture thereof

A display device comprising:

• an outer substrate;
• an inner substrate;
• a first electrode and a second electrode disposed between the inner substrate and the outer substrate in a spaced apart relationship;
• and
• a plurality of microspheres between the first and second electrodes, each microsphere comprising a spherical shell enclosing an electrophoretic media;
• and
• wherein the electrophoretic media comprises a first chemical entity and a second chemical entity, wherein the first and second chemical entities are to be induced to reversibly interact to switch between a separated state having a first light absorption characteristic and an optically active complex state having a second light absorption characteristic in response to a change in an electromagnetic field applied to the electrophoretic media by the first and second electrodes to change an optical property of the electrophoretic media, and
• wherein the first light absorption characteristic is transparency and the second light absorption characteristic is the transmission of certain wavelengths, or wherein the first light absorption characteristic is the transmission of certain wavelengths and the second light absorption characteristic is transparency.