Light emitting device

摘要

The present disclosure provides a light emitting device, including a serially- connected LED array including a plurality of LED cells on a substrate, including a first LED cell, a second LED cell, and a serially-connected LED sub-array intervening the first and second LED cell; a trench between two neighboring sides of the first and the second LED cells; and a protecting structure formed near the trench to prevent the light-emitting device from being damaged by a surge voltage higher than a normal operating voltage. The protecting structure includes a first insulating layer and a second insulating layer formed over the first insulating layer and partially filling in the trench, wherein two ends of the first insulating layer extending outward from the second insulating layer partially covers the top surfaces of the first and the second LED cells.

主权项

1. A light emitting device, comprising:
a serially-connected LED array comprising a plurality of LED cells on a substrate, comprising: a first LED cell, a second LED cell, and a serially-connected LED sub-array comprising at least three LED cells intervening the first and second LED cell, wherein each of the first and second LED cell comprising a first side and a second side, the first side of the first LED cell and/or the second LED cell neighboring to the LED sub-array, and the second side of the first LED cell neighboring to the second side of the second LED cell; a trench between the second sides of the first and second LED cells; and a protecting structure formed near the trench to prevent the light emitting device from being damaged near the trench by a surge voltage higher than a normal operating voltage of the light emitting device, wherein the protecting structure further comprises: a first insulating layer filled in the trench; and a second insulating layer formed over the first insulating layer and at least partially filling in the trench, wherein the first LED cell and the second LED cell each comprises a top surface, and the second insulating layer has an outer surface having two sides covers a part of the top surfaces of the first LED cell and the second LED cell and two ends of the first insulating layer extending outward from the second insulating layer and partially covers the top surfaces of the first LED cell and the second LED cell, wherein the two ends of the first insulating layer is exposed by the two sides of the outer surface of the second insulating layer respectively.