1. A light emitting device, comprising:
a metallic layer;
a plurality of light emitting device cells arranged above the metallic layer, and including a first conductive semiconductor layer, an active layer below the first conductive semiconductor layer, and a second conductive semiconductor layer below the active layer;
a connection section connecting the light emitting device cells to each other in series;
an insulating layer provided between the metallic layer and the light emitting device cells, and including a first insulating layer electrically insulating the light emitting device cells from each other and a second insulating layer insulating the connection section from the metallic layer;
electrodes provided above the first conductive semiconductor layer of the light emitting device cells;
a contact section connecting the second conductive semiconductor layer of the light emitting device cells to the metallic layer through a contact hole formed in the second insulting layer, and forming a first node; and
a pad provided on at least one of the electrodes, and forming a second node,
wherein each light emitting device cell is directly physically connected with the connection section through a hole formed in the first insulating layer, and
wherein the electrodes are not in direct physical contact with the connection section.
2. The light emitting device of claim 1, further comprising a seed layer or a bond metallic layer interposed between the metallic layer and the second insulating layer.
3. The light emitting device of claim 1,
wherein the first and second nodes are placed such that the light emitting device cells provided in a first array block are identical to the light emitting device cells provided in a second array block in number.
4. The light emitting device of claim 1, wherein the electrode includes a transparent electrode.
5. The light emitting device of claim 1, further comprising a transparent electrode layer on the first conductive semiconductor layer of the light emitting device cell.
6. The light emitting device of claim 1, wherein an AC power source and a current limiter passive element, which are connected to each other in series, are connected to the first and second nodes.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Reactor apparatus, comprising:
a housing;
a central core disposed in the housing that comprises a plurality of abutting hexagonal blocks of ceramic material that comprise burnable poison, each hexagonal block comprising a plurality of coolant channels disposed therein for transporting coolant therethrough, and wherein outer surfaces of each hexagonal block and surfaces of each coolant channel are coated with a material comprising a containment shell; and
a reflector disposed between the central core and the housing that comprises a plurality of abutting hexagonal blocks of ceramic material, each hexagonal block comprising a plurality of coolant channels disposed therein for transporting coolant therethrough, and wherein outer surfaces of each hexagonal block and surfaces of each coolant channel are coated with a material comprising a containment shell, and wherein inner surfaces of innermost hexagonal blocks of the reflector contact outer surfaces of outermost hexagonal blocks of the central core.
2. The apparatus recited in claim 1 wherein the hexagonal blocks of the central core comprise a graphite foam and uranium carbide matrix.
3. The apparatus recited in claim 2 wherein the containment shell comprises silicon carbide.
4. The apparatus recited in claim 1 wherein the hexagonal blocks of the central core comprise uranium carbide.
5. The apparatus recited in claim 4 wherein the containment shell comprises silicon carbide.
6. The apparatus recited in claim 4 wherein the containment shell comprises carbon-carbon composite material.
7. The apparatus recited in claim 1 wherein the hexagonal blocks of the central core comprise uranium enriched to about 12%.
8. The apparatus recited in claim 1 wherein the reflector comprises natural uranium.
9. The apparatus recited in claim 1 wherein the containment shell has a thickness of about 50 \u03bcm.
10. The apparatus recited in claim 1 wherein the central core comprises a central core surrounded by an outer core, and wherein the central and outer cores have burnable poison disposed therein.
11. The apparatus recited in claim 1 wherein the coolant comprises helium.