Patent ID: 6621105
Filing Date: 2003-09-16
Classification: B41J,G09G,H01L

Abstract:
An array of light-emitting elements having a substrate with a semiconductor layer, a first dielectric layer formed on the semiconductor layer, and a second dielectric layer formed on the first dielectric layer, the first dielectric layer and the second dielectric layer having respective openings, the array being divided into a plurality of blocks that are electrically isolated by isolation trenches formed in the semiconductor layer, the blocks constituting one or more cells,each block having: a row of light-emitting elements formed in the semiconductor layer by selective diffusion of an impurity; a plurality of first electrodes formed on the first dielectric layer, electrically connected to the light-emitting elements through openings in the first dielectric layer; a plurality of first wires formed on the first dielectric layer, electrically connected to respective first electrodes; a first electrode pad formed on the first dielectric layer, electrically connected to one of the first wires, thus to one of the first electrodes; a second electrode formed on the semiconductor layer adjacent the row of light-emitting elements; a second wire formed on the first dielectric layer, electrically connected to the second electrode through an opening in the first dielectric layer, the second wire being wholly disposed to one side of said one of the first wires; and a second electrode pad formed on the first dielectric layer, electrically connected to the second wire; each cell having: a plurality of common wires formed on the second dielectric layer, the number of common wires being equal to the number of light-emitting elements per block, each first wire in each block being electrically connected through an opening in the second dielectric layer to one of the common wires; wherein relative positions of the first electrode pad and the second electrode pad are varied in different blocks in the cell, enabling the first wires connected to the first electrode pads to be electrically connected to light-emitting elements in different positions in different blocks without crossing the second wires.