Patent ID: 8736800

Claim:
A display device comprising: a first substrate; a plurality of first protrusions on the first substrate, each first protrusion having a first side wall and a second side wall; a first electrode, on the first side wall of each first protrusion; a second electrode, on the second side wall of each first protrusion, wherein a lateral electric field is formed between the first electrode on each first protrusion and the second electrode on the adjacent first protrusion; a second substrate opposite to the first substrate; a plurality of second protrusions on the second substrate, each second protrusion having a third side wall and a fourth side wall; a third electrode, on the third side wall of each second protrusion; a fourth electrode, on the fourth side wall of each second protrusion, wherein a lateral electric field is formed between the third electrode on each second protrusion and the fourth electrode on the adjacent second protrusion; and a display medium sandwiched between the first and the second substrates.