Patent ID: 7612495

Claim:
A display device comprising: a plurality of luminous elements, each luminous element including: a first electrode formed on a substrate and defining a luminous region and connected to a first electrode interconnection; a transparent second electrode connected to a pair of second electrode interconnections positioned at opposite ends of the luminous element, and a portion of said transparent second electrode facing said first electrode; a luminous layer arranged between said first electrode and said second electrode; and a display region in which the plurality of luminous elements are arranged in a first direction and a second direction to form a matrix, and light is produced from the luminous layers in the plurality of luminous elements on the side opposite of said substrate, wherein said display region includes a plurality of first electrode interconnections extending in said first direction providing a first steady potential voltage and respectively connected to a plurality of said first electrodes arranged in said first direction, and a plurality of second electrode interconnections extending in said second direction providing a second steady potential voltage and respectively connected to a plurality of said second electrodes arranged in said second direction; and wherein an area outside of said display region comprises: a first bus line connected to one side of a plurality of said second electrode interconnections extending in said second direction and providing a current flow, and a second bus line connected to another side of a plurality of said second electrode interconnections extending in said second direction and for suppressing a variation of a voltage potential of said second electrode interconnection, wherein a resistance of said first bus line and a resistance of said second bus line are defined so as to satisfy the following formula: R 1≦8× R 2/ N; R3<R2, wherein Note that, in the above formula, said “R 1 ” is indicated as a resistance of said first bus line, said “R 2 ” is indicated as a resistance of said second electrode interconnection, said “R 3 ” is indicated as a resistance of said second bus line and said “N” is indicated as a number of said second electrode interconnection.