Light source device using led, and method of producing same
First Claim
1. (amended) A light source apparatus for emitting light from an LED chip (2), comprising:
- a radiator plate (3) having thermally conductive properties;
an insulating member (4) provided on at least one side of the radiator plate (3) and having a through hole (5, 5′
, 6) provided in the side thereof facing the radiator plate (3);
the LED chip (2) mounted on and thermally coupled to an exposed portion of the radiator plate (3) facing the through hole (5, 5′
, 6);
a wiring pattern (8) provided on the insulating member (4) and electrically isolated by the insulating member (4) from the radiator plate (3);
connecting members (9, 21) electrically connecting between the wiring pattern (8) and the electrodes of the LED chip (2); and
a sealing material (10, 10′
) filled in the through hole (5, 5′
, 6) for entirely encapsulating the LED chip (2) and the connecting members (9, 21), wherein the portions of the wiring pattern (8) electrically connected by the connecting members (9, 21) to the LED chip (2) are located in the through hole (6) and held closer to the radiator plate (3) provided side than the other side of the insulating member (4) where the radiator plate (3) is not provided.
4 Assignments
0 Petitions
Accused Products
Abstract
A light source apparatus which is improved in the efficiency of light emission thus to increase the operating life and the mechanical strength and a method of producing the same are provided. The light source apparatus 1 comprises a radiator plate 3 having thermally conductive properties, an insulating member 4 coupled to at least one side of the radiator plate 3 and having a through hole 6 provided in the side thereof facing the radiator plate 3, an LED chip 2 installed and thermally coupled to an exposed portion of the radiator plate 3 facing the through hole 6, an extension 4a inwardly projecting at the hole 6 from the radiator plate 3 end of the insulating member 4, a wiring pattern 8 provided on the insulating member 4 and electrically isolated by the insulating member 4 from the radiator plate 3, bonding wires 9 electrically connecting between portions of the wiring pattern 8 extended to the extension 4a and the electrodes of the LED chip 2, and a light-transmissive sealing material 10 filled in the through hole 6 for entirely encapsulating the LED chip 2 and the bonding wires 9.
360 Citations
24 Claims
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1. (amended) A light source apparatus for emitting light from an LED chip (2), comprising:
-
a radiator plate (3) having thermally conductive properties;
an insulating member (4) provided on at least one side of the radiator plate (3) and having a through hole (5, 5′
, 6) provided in the side thereof facing the radiator plate (3);
the LED chip (2) mounted on and thermally coupled to an exposed portion of the radiator plate (3) facing the through hole (5, 5′
, 6);
a wiring pattern (8) provided on the insulating member (4) and electrically isolated by the insulating member (4) from the radiator plate (3);
connecting members (9, 21) electrically connecting between the wiring pattern (8) and the electrodes of the LED chip (2); and
a sealing material (10, 10′
) filled in the through hole (5, 5′
, 6) for entirely encapsulating the LED chip (2) and the connecting members (9, 21), whereinthe portions of the wiring pattern (8) electrically connected by the connecting members (9, 21) to the LED chip (2) are located in the through hole (6) and held closer to the radiator plate (3) provided side than the other side of the insulating member (4) where the radiator plate (3) is not provided. - View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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3. (canceled)
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4. (canceled)
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22. A method of producing a light source apparatus for emitting light from an LED chip (2), comprising:
-
a first step of preparing an insulating member (4) which has a through hole (6) provided therein to extend from the front side for emitting the light to the back side;
a second step of providing a wiring pattern (8) on the front side of the insulating member (4) for feeding power to the LED chip (2);
a third step of coupling a thermally conductive radiator plate (3) to the back side of the insulating member (4);
a fourth step of installing and thermally coupling the LED chip (2) to a corresponding portion of the radiator plate (3) projected from the through hole (6) and then electrically connecting the electrodes of the LED chip (2) to the wiring pattern (8) by connecting members (9, 21); and
a fifth step of filling the through hole (6) with a sealing material (10, 10′
) to entirely encapsulate the LED chip (2) and the connecting members (9, 21).
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23. A method of producing a light source apparatus for emitting light from an LED chip (2), comprising:
-
a first step of insert forming an insulating member (4) which is made of an insulating material and has a through hole (6) provided therein opening at both the front side for emitting the light and the back side and a radiator plate (3) which has thermally conductive properties and is coupled to the back side of the insulating member (4);
a second step of providing a wiring pattern (8) on the front side of the insulating member (4) for feeding power to the LED chip (2);
a third step of installing and thermally coupling the LED chip (2) to a corresponding portion of the radiator plate (3) projected from the through hole (6) and then electrically connecting the electrodes of the LED chip (2) to the wiring pattern (8) by connecting members (9, 21); and
a fourth step of filling the through hole (6) with a sealing material (10, 10′
) to entirely encapsulate the LED chip (2) and the connecting members (9, 21).
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24. A method of producing a light source apparatus for emitting light from an LED chip (2), comprising:
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a first step of preparing a thermally conductive radiator plate (3) and an electrically conductive sheet arranged to serve as a wiring pattern (8′
) for feeding power to the LED chip (2);
a second step of plating the radiator plate (3) and the electrically conductive sheet;
a third step of insert forming the electrically conductive sheet spaced from the radiator plate (3) to prepare an insulating member (4) of an insulating material;
a fourth step of installing and thermally coupling the LED chip (2) to a corresponding portion of the radiator plate (3) projected from a through hole (6) provided in the insulating member (4) opening at the front side for emitting the light and the back side, and then electrically connecting the electrodes of the LED chip (2) to the wiring pattern (8′
) by connecting members (9, 21); and
a fifth step of filling the through hole (6) with a light-transmissive sealing material (10, 10′
) to entirely encapsulate the LED chip (2) and the connecting members (9, 21).
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Specification