Patent ID: 8157412

Claim:
A light emitting diode substrate assembly comprising: a metal substrate having a top surface; and multiple reflecting cups formed on the top surface of the substrate and each reflecting cup having a top; and a recess defined in the top of the reflecting cup and having an opening defined in the top of the reflecting cup, a bottom opposite to the opening, an inner side wall to form as a reflecting surface and a diameter gradually increasing from the bottom to the opening; a circuit board mounted on the top surface of the substrate and having a top; multiple through holes defined through the circuit board and mounted respectively around the reflecting cups on the substrate; and multiple current conducting lines formed on the top of the circuit board, wherein each adjacent two of the through holes has one of the current conducting lines mounted between the adjacent through holes and each through hole has at least two of the current conducting lines mounted adjacent to the through hole; multiple chip strings mounted respectively in the reflecting cups, wherein each reflecting cup has at least one of the chip strings mounted in the reflecting cup and each chip string comprises at least one light emitting diode chip mounted on the bottom of the recess in a corresponding one of the reflecting cups and connected electrically to two corresponding current conducting lines on the circuit board with bonding wires; an annular wall mounted on the top of the circuit board around the through holes and having a holding space defined through the annular wall and enclosing the reflecting cups inside; and an encapsulant with fluorescent powders mounted in the holding space in the annular wall and encapsulating the chip strings.