Light-emitting device
A light-emitting device includes a growth substrate, a plurality of light-emitting diode units formed on the growth substrate and arranged in a closed loop, an electrode directly formed on the growth substrate, an electrical connection structure formed on the growth substrate and connecting the plurality of light-emitting diode units with the electrode, and a plurality of rectifying diodes connecting to respective nodes of the closed loop.
1. A light-emitting device comprising:
a first light-emitting diode chip comprising:
a substrate;
a plurality of light-emitting diode units epitaxially connected to the substrate, having a sidewall, and arranged in a closed loop;
an electrode formed on the substrate;
an insulating layer having a shape substantially conforming to the sidewall;
a metal layer formed on the insulating layer, and electrically connecting the plurality of light-emitting diode units and the electrode;
a plurality of rectifying diodes epitaxially connected to the substrate and connected to respective nodes of the closed loop; and
an electrical connection structure formed on a predetermined one of the plurality of rectifying diodes and comprising a first portion and a second portion separated from the first portion,
wherein the first portion and the second portion are located on two corners which are located on a diagonal line of the predetermined one of the plurality of rectifying diodes,
wherein the plurality of light-emitting diode units comprises at least two light-emitting diode units, the at least two light-emitting diode units are configured to alternately emit light when the light-emitting device is operated, and
wherein each of the plurality of light-emitting diode units is formed in a rectangular shape.
2. The light-emitting device of claim 1 , wherein the plurality of light-emitting diode units and the plurality of rectifying diodes have a same epitaxial stacked layer.
3. The light-emitting device of claim 1 , wherein the plurality of rectifying diodes is physically separated by the plurality of light-emitting diode units.
4. The light-emitting device of claim 1 , wherein the plurality of light-emitting diode units has more than three light-emitting diode units physically arranged in a line.
5. The light-emitting device of claim 1 , further comprising a submount on which the first light-emitting diode chip is arranged.
6. The light-emitting device of claim 5 , further comprising a second light-emitting diode chip formed on the submount and having a peak wavelength different from the first light-emitting diode chip.
7. The light-emitting device of claim 5 , further comprising an electronic element formed on the submount and including a resistor, a capacitor, or an inductor.
8. The light-emitting device of claim 1 , further comprising an encapsulation material covering the first light-emitting diode chip.
9. The light-emitting device of claim 1 , further comprising a wavelength converting layer arranged on the first light-emitting diode chip.
10. The light-emitting device of claim 1 , wherein the plurality of light-emitting diode units is connected in series.