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Light emitting device

  • US 9,893,024 B2
  • Filed: 10/02/2015
  • Issued: 02/13/2018
  • Est. Priority Date: 08/30/2010
  • Status: Active Grant
First Claim
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1. A light emitting device, comprising:

  • a single substrate;

    a serially-connected LED array, comprising;

    a plurality of LED cells, comprising a first LED cell, a second LED cell, a third LED cell, a fourth LED cell, a fifth LED cell, and a sixth LED cell serially-connected sequentially on the single substrate;

    wherein the first LED cell, the fourth LED cell, and the fifth LED cell are arranged in a first column;

    wherein the second LED cell, the third LED cell, and the sixth LED cell are arranged in a second column;

    wherein each of the plurality of LED cells comprises a first pair and a second pair of parallel edges; and

    wherein the first pairs of parallel edges are not parallel to the second pairs of parallel edges;

    a trench between each adjacent two LED cells; and

    a plurality of conducting metals comprising a first conducting metal, a second conducting metal, a third conducting metal, a fourth conducting metal, and a fifth conducting metal formed on the plurality of LED cells to electrically connect the LED cells in series;

    wherein each of the conducting metals comprises a middle part formed on the trench and two extending parts respectively formed on one LED cell and an adjacent LED cell;

    wherein the first LED cell connects to the second LED cell with the first conducting metal inbetween, and the middle part of the first conducting metal is formed between one edge of the first pair of parallel edges of the first LED cell and one edge of the first pair of parallel edges of the second LED cell;

    the second LED cell connects to the third LED cell with the second conducting metal inbetween, and the middle part of the second conducting metal is formed between one edge of the second pair of parallel edges of the second LED cell and one edge of the second pair of parallel edges of the third LED cell;

    the third LED cell connects to the fourth LED cell with the third conducting metal inbetween, and the middle part of the third conducting metal is formed between one edge of the first pair of parallel edges of the third LED cell and one edge of the first pair of parallel edges of the fourth LED cell;

    the fourth LED cell connects to the fifth LED cell with the fourth conducting metal inbetween, and the middle part of the fourth conducting metal is formed between one edge of the second pair of parallel edges of the fourth LED cell and one edge of the second pair of parallel edges of the fifth LED cell;

    the fifth LED cell connects to the sixth LED cell with the fifth conducting metal inbetween, and the middle part of the fifth conducting metal is formed between one edge of the first pair of parallel edges of the fifth LED cell and one edge of the first pair of parallel edges of the sixth LED cell.

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