Semiconductor light emitting device having multi-cell array, light emitting module, and illumination apparatus

A semiconductor light emitting device comprising:

• a substrate;
• a plurality of light emitting cells disposed on the top surface of the substrate, the light emitting cells each having a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer formed sequentially on the top surface of the substrate, the light emitting cells being arrayed in a plurality of columns having two or more light emitting cells;
• a plurality of connection parts formed on the substrate with the light emitting cells formed thereon to connect the light emitting cells in a series-parallel configuration;
• and
• an insulation layer formed on the surface of the light emitting cell to prevent an undesired connection between the connection parts and the light emitting cell,
• wherein the connection part comprises:
• a first connection part connected to the first-conductivity-type semiconductor layer of the light emitting cell located at one end of each column;
• a second connection part connected to the second-conductivity-type semiconductor layer of the light emitting cell located at the other end of each column;
• an interconnection part formed to connect the light emitting cells of each column in series to each other between the first connection part and the second connection part;
• and
• an intermediate connection part formed to connect the interconnection part of at least a portion of the columns in a row direction.

A semiconductor light emitting device comprising:

• a substrate;
• a plurality of light emitting cells disposed on the top surface of the substrate, the light emitting cells each having a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer formed sequentially on the top surface of the substrate;
• a plurality of connection parts formed on the substrate with the light emitting cells formed thereon to connect the light emitting cells in a parallel configuration;
• and
• an insulation layer formed on the surface of the light emitting cell to prevent an undesired connection between the connection parts and the light emitting cell,
• wherein the connection part comprises:
• at least one first connection part connected to the first-conductivity-type semiconductor layer of the light emitting cells;
• and
• at least one second connection part connected to the second-conductivity-type semiconductor layer of the light emitting cells.

A semiconductor light emitting device comprising:

• a substrate;
• a plurality of light emitting cells disposed on the top surface of the substrate, the light emitting cells each having a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer formed sequentially on the top surface of the substrate, the light emitting cells being arrayed in M rows and M columns, M and N being integers equal to or greater than 4;
• a plurality of connection parts formed on the substrate with the light emitting cells formed thereon to connect the light emitting cells in a series-parallel configuration;
• and
• an insulation layer formed on the surface of the light emitting cell to prevent an undesired connection between the connection parts and the light emitting cell,
• wherein
• M light emitting cells located in each column are divided into a plurality of groups each having two or more light emitting cells connected in series to each other, and the light emitting cells of the groups are formed such that the electrodes of the same polarity face each other in the light emitting cells of the adjacent groups;
• and
• the connection part comprises:
• at least one first connection part connected to the first-conductivity-type semiconductor layer of the light emitting cell located at one end of each group;
• at least one second connection part connected to the second-conductivity-type semiconductor layer of the light emitting cell located at the other end of each group;
• and
• a series interconnection part formed to connect the light emitting cells of the groups in series to each other.

A semiconductor light emitting device comprising:

• a substrate;
• a plurality of light emitting cells disposed on the top surface of the substrate, the light emitting cells each having a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer formed sequentially on the top surface of the substrate, wherein a region between the light emitting cells is defined as an isolation region removed to at least the active layer;
• a plurality of connection parts formed on the substrate with the light emitting cells formed thereon to connect the light emitting cells in a parallel or series-parallel configuration;
• and
• an insulation layer formed on the surface of the light emitting cell to prevent an undesired connection between the connection parts and the light emitting cell,
• wherein the connection part comprises an intermediate connection part disposed between adjacent light emitting cells and formed in the array direction of the light emitting cells, and the adjacent light emitting cells are connected through the intermediate connection part.