Patent ID: 8360600

Claim:
An electronic illuminating device, comprising: an illuminating area comprising: a plurality of light-emitting blocks, each of the light-emitting blocks using at least one light-emitting element as a light source; and a plurality of illuminating area power-supply lines disposed in the illuminating area, and each of the illuminating area power-supply lines being electrically coupled to a corresponding one of the light-emitting blocks; a routing area comprising a plurality of routing area power-supply lines, each of the routing area power-supply lines being electrically coupled to a corresponding one of the illuminating area power-supply lines; and a control area electrically coupled to the routing area power-supply lines to supply powers to the routing area power-supply lines, wherein a width of at least one of the illuminating area power-supply lines and the corresponding routing area power-supply line or a length of at least one of the routing area power-supply lines is adjusted, and thereby differences among resistances between the light-emitting blocks and the control area are within 20%.