Patent ID: 8107159

Claim:
An electronic device comprising: a first substrate made of thin plastic sheet; a second substrate made of thin plastic sheet opposing the first substrate; a chamber formed between portions of the first and second substrates; two opposing electrodes attached to inner surfaces of the first and second substrates respectively, the chamber being formed between the two electrodes; and a sealing structure arranged to seal the chamber being formed at the interface between the first and second substrates, wherein the sealing structure surrounds the chamber and comprises a recess formed at one of the substrates and a protrusion formed from the other of the substrates, the protrusion being engaged in the recess; wherein the electronic device is an electrophoretic display, a plurality of microcapsules is received in the chamber and sandwiched between the electrodes, one of the substrates and a corresponding electrode attached thereon being made of transparent material, and wherein at least one additional spaced sealing structure is arranged in the radial direction of the chamber and surrounding the chamber to thereby provide multiple seals for the chamber in the radial direction of the chamber.