White light emitting device and method of making same

A method of producing a white-light emitting source, the white light comprising at least a first color component with a first wavelength, a second color component with a second wavelength, and a third color component, said method comprising the steps of:

• disposing a first light emitting device on a first side of a first transparent substrate, the first light emitting device comprising a first light source for emitting the first color component;
• disposing a second light emitting device on a first side of a second transparent substrate, the second light emitting device comprising a second light source for emitting the second color component;
• disposing a third light emitting device on at least one semiconductor substrate;
• separately bonding a second side of the first transparent substrate to the third light-emitting device for forming a first light emitting structure and bonding a second side of the second transparent substrate to the third light-emitting device for forming a second light emitting structure;
• removing said at least one semiconductor substrate from the first light emitting structure for providing a reduced first light emitting structure;
• removing said at least one semiconductor substrate from the second light emitting structure for providing a reduced second light emitting structure;
• dividing the reduced first light emitting structure into a plurality of first combined light-emitting dies;
• dividing the reduced second light emitting structure into a plurality of second combined light-emitting dies;
• mounting at least one first combined light-emitting die and at least one second combined light-emitting die on a baseboard;
• and
• providing electrical contacts to said at least one first combined light-emitting die and said at least one second combined light-emitting die.

A method of producing a white-light emitting source, the white light comprising at least a first color component with a first wavelength, a second color component with a second wavelength, and a third color component, said method comprising the steps of:

• disposing a first light emitting device on a first side of a first transparent substrate, the first light emitting device comprising a first light source for emitting the first color component;
• disposing a second light emitting device on a first side of a second transparent substrate, the second light emitting device comprising a second light source for emitting the second color component;
• disposing a third light emitting device on at least one semiconductor substrate;
• separately bonding a second side of the first transparent substrate to the third light-emitting device for forming a first light emitting structure and bonding a second side of the second transparent substrate to the third light-emitting device for forming a second light emitting structure;
• removing said at least one semiconductor substrate from the first light emitting structure for providing a reduced first light emitting structure;
• removing said at least one semiconductor substrate from the second light emitting structure for providing a reduced second light emitting structure;
• patterning the reduced first and second light-emitting structures into patterned first and second light-emitting structures;
• providing electrical contacts in the patterned first and second light emitting structures;
• dividing the patterned first light emitting structure into a plurality of first combined light-emitting dies;
• dividing the patterned second light emitting structure into a plurality of second combined light-emitting dies;
• mounting at least one first combined light-emitting die and at least one second combined light-emitting die on a baseboard;
• and
• providing electrical contacts to said at least one first combined light-emitting die and said at least one second combined light-emitting die.

A light emitting device for emitting white-light of at least a first color component with a range of first wavelengths, a second color component with a range of second wavelengths and a third color component with a range of third wavelengths, the first wavelengths shorter than the second wavelengths, the second wavelengths shorter than the third wavelengths, said light emitting device comprising:

• a mounting plate;
• a first light emitting component disposed on the mounting plate, the first light emitting component comprising a first light source for emitting the first color component, and a second light source for emitting a part of the third color component responsive to the first color component;
• and
• a second light emitting component disposed on the mounting plate adjacent to the first light emitting component, the second light emitting component having a first light source for emitting the second color component, and a second light source for emitting a further part of the third color component responsive to the second color component, wherein the first active layer is disposed between the electron source layer and the hole source layer in the first light emitting component, and the hole source layer is disposed on a first side of a first transparent substrate and the second light source in the first light emitting component is disposed on a second side of the first transparent substrate, and wherein the second active layer is disposed between the electron source layer and the hole source layer in the second light emitting component, and the hole source layer is disposed on a first side of a second transparent substrate and the second light source in the second light emitting component is disposed on a second side of the second transparent substrate, and wherein the second light source in the first light emitting component is substantially made of AlGaInP or GaxIn1-xP, where 0.3<x<0.7.