Light Emitting Device Having A Plurality Of Light Emitting Cells Connected In Series And Method Of Fabricating The Same
AssigneeSeoul Opto Device Co., Ltd.
InventorChung Hoon Lee
Life of this patent
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Abstract
Disclosed are a light emitting device having a plurality of light emitting cells connected in series and a method of fabricating the same. The light emitting device includes a buffer layer formed on a substrate. A plurality of rod-shaped light emitting cells are located on the buffer layer to be spaced apart from one another. Each of the light emitting cells has an n-layer, an active layer and a p-layer. Meanwhile, wires connect the spaced light emitting cells in series or parallel. Accordingly, arrays of the light emitting cells connected in series are connected to be driven by currents flowing in opposite directions. Thus, there is provided a light emitting device that can be directly driven by an AC power source.
Claims5
A light emitting device having a plurality of light emitting cells connected in series, comprising:
- a buffer layer formed on a substrate;
- the plurality of light emitting cells formed in rod shapes and spaced apart from one another on the buffer layer, each of the light emitting cells having an n-layer, an active layer and a p-layer;
- and
- wires connecting the spaced light emitting cells in series or parallel.
A method of fabricating a light emitting device having a plurality of light emitting cells connected in series, the method comprising:
- forming a buffer layer on a substrate;
- forming a plurality of laminated rod-shaped light emitting cells, each of the light emitting cells having an n-layer, an active layer and a p-layer sequentially formed on the buffer layer;
- etching the p-layers and the active layers until the n-layers are partially exposed;
- and
- connecting each of the exposed portions of the n-layers to the p-layer of an adjacent light emitting cell through wires in series or parallel.
Dependencies are inferred from the claim text.