Gallium and nitrogen containing triangular or diamond-shaped configuration for optical devices
View Patent ↗A gallium and nitrogen containing optical device has a base region and no more than three major planar side regions configured in a triangular arrangement provided from the base region.
1. A lamp comprising:
an light emitting diode (LED) device comprising at least:
a gallium and nitrogen containing substrate having first, second, and third a-planes forming an equilateral triangle;
a light-emitting epitaxial structure overlying said substrate;
p-type metallized contact; and
an n-type metallized contact;
wherein said LED device comprises no more than five sides, wherein three sides of said five sides are along said first, second and third a-planes; and the remaining two sides of said five sides have a triangular shape and are configured from equivalent crystal planes.
2. The lamp of claim 1 , wherein the two sides are in parallel to each other.
3. The lamp of claim 1 , wherein at least one of the three surfaces is roughened.
4. The lamp of claim 1 , wherein said substrate comprises bulk GaN.
5. The lamp of claim 1 , wherein said equivalent crystal planes are c-planes.
6. The lamp of claim 1 , wherein said first, second and third sides are cleaved sides.
7. The lamp of claim 6 , wherein said first, second and third sides have striations along said a-planes.
8. The lamp of claim 7 , wherein said striations are perpendicular to said fourth and fifth sides.
9. The lamp of claim 1 , wherein said optical device has only five sides.
10. A light emitting diode (LED) device comprising:
a gallium and nitrogen containing substrate having first, second, and third a-planes forming a triangle; and
a light-emitting epitaxial structure overlying said substrate;
a p-type metallized contact; and
n-type metallized contact;
wherein said LED device comprises no more than five sides, wherein three of said five sides are along said first, second, and third a-planes, and the remaining two sides of said five sides have a triangular shape and are configured from equivalent crystal planes.
11. The LED device of claim 10 , wherein the equivalent crystal planes are c-planes.
12. The LED device of claim 10 , wherein the three surface regions are configured from respective scribes provided within a vicinity of respective a-planes.
13. The LED device of claim 10 , wherein the two surfaces are parallel to each other.
14. The LED of claim 10 , wherein at least one of the three surfaces is roughened.
15. The LED device of claim 10 , wherein said substrate comprises bulk GaN.
16. The LED device of claim 15 , wherein said light-emitting epitaxial structure comprises GaN.
17. The LED device of claim 10 , wherein said first, second and third sides are cleaved sides.
18. The LED device of claim 17 , wherein said first, second and third sides have striations along said a-planes.
19. The LED device of claim 18 , wherein said striations are perpendicular to said fourth and fifth sides.
20. The LED device of claim 10 , wherein said optical device has only five sides.
21. A lamp comprising:
an optical device comprising at least:
a gallium and nitrogen containing substrate having first, second, and third a-planes forming an equilateral triangle; and
a light-emitting epitaxial structure overlying said substrate;
wherein said optical device comprises no more than five sides, wherein three sides of said five sides are along said first, second and third a-planes; and the remaining two sides of said five sides have a triangular shape and are configured from equivalent crystal planes, wherein said first, second and third sides are sufficiently rough to achieve a light extraction efficiency of over 80%.
22. An optical device comprising:
a gallium and nitrogen containing substrate having first, second and third a-planes forming a triangle; and
a light-emitting epitaxial structure overlying said substrate;
wherein said optical device comprises no more than five sides, wherein three of said five sides are along said first, second, and third a-planes, and the remaining two sides of said five sides have a triangular shape and are configured from equivalent crystal planes, wherein said first, second and third sides are sufficiently rough to achieve a light extraction efficiency of over 80%.