Abstract:
Disclosed is a high-quality light-emitting device including a resin package having a recessed portion, which is able to be easily and reliably manufactured while securing higher strength. The light emitting device includes a light emitting element 2, a resin package 10 defining a recessed portion 105 serving as a mounting region of the light emitting element 2, gate marks 5a, 5b each formed on an outer side surface of the resin package 10, and leads 20, 30 disposed on the bottom surface of the recessed portion 105 and electrically connected to the light emitting element 2. The light emitting element 2 is mounted on the lead 20. The gate marks include a first gate mark 5a formed on a first outer side surface 11a of the resin package 10 and a second gate mark 5b formed on an outer side surface which is different than the first outer side surface 11 a.
Abstract:
Provided is a light emitting device wherein a resin molded body having a circular or an oval recessed section at the center suppresses generation of cracks. A light emitting device (1) is provided with a light emitting element (2); a first resin molded body (10) having a plurality of outer surfaces (11), and a recessed section (10a) at the center; a first lead (20) and a second lead (30) electrically connected to the light emitting element (2); and a second resin molded body (40) applied in the recessed section (10a). The light emitting element (2) is place on the first lead (20), and the surface of the second resin molded resin (40) is permitted to be a light emitting surface. A gate notch (50) obtained by cutting a gate formed on the outer surface (11) of the first resin molded body (10) is formed on an extended line of a normal line on one point on a circular cross-section of the recessed section (10a) in the normal nine direction.
Abstract:
To provide a light emitting device having high light extraction efficiency, and a method for manufacturing the light emitting device. A method for manufacturing a light emitting device (100) according to the present invention, includes: forming a sealing member (40) for sealing a light emitting element (10) on a base body (30) by dropping, the base body (30) including a conductive member (20) for connecting to the light emitting element (10), and a molding (25) integrally molded with the conductive member (20); the sealing member (40) being formed such that at least a part of a periphery of the sealing member (40) is located on an outward surface (38) of the conductive member (20) or the molding (25), the outward surface facing outward in a top view.
Abstract:
Provided is a simple and low-cost method for manufacturing, in a short time, many light emitting devices wherein adhesiveness between a leadframe and a thermosetting resin composition is high. The method for manufacturing the light emitting device having a resin package (20) wherein the optical reflectivity at a wavelength of 350-800 nm after thermal curing is 70% or more and a resin section (25) and a lead (22) are formed on substantially a same surface on an outer surface (20b) has: a step of sandwiching a leadframe (21) provided with a notched section (21a) by an upper molding die (61) and a lower molding die (62); a step of transfer-molding a thermosetting resin (23) containing a light-reflecting substance (26), in a molding die (60) sandwiched by the upper molding die (61) and the lower molding die (62) and forming a resin-molded body (24) on the leadframe (21); and a step of cutting the resin-molded body (24) and the leadframe (21) along the notched section (21a).
Abstract:
A light emitting device, which can be efficiently manufactured and maintain a stable light emitting property for a long period, is provided. The light emitting device comprises a first resin forming body including a periphery that forms a recess to house a light emitting element and a bottom that forms a bottom portion of the recess, and a second resin forming body that covers the light emitting element. The first resin forming body is composed of a thermosetting epoxy resin composite whose essential component is an epoxy resin. The bottom covers surfaces of lead frames excluding mounting regions of the light emitting element and wires. A thickness of the bottom is formed thinner than a thickness from the surface of the lead frames to a leading end of the light emitting element.
Abstract:
PROBLEM TO BE SOLVED: To provide a simple and inexpensive method of manufacturing a large number of light-emitting devices in a short time, which has high adhesion of a lead frame and a thermosetting resin composition. SOLUTION: The method of manufacturing the light-emitting device has a resin package 20 in which the optical reflectance in wavelength of 350 to 800 nm after thermal curing is ≥70%, and a resin part 25 and a lead 22 are formed on approximately the same surface in an outside surface 20b. The method has: a step of sandwiching a lead frame 21, in which a notch 21a is provided, with an upper metal mold 61 and an lower metal mold 62; a step of forming a resin molding 24 in a lead frame 21 by transfer-molding a thermosetting resin 23, which contains a light reflective material 26, in the metal mold 60 sandwiched by the upper metal mold 61 and the lower mold 62; and a step of cutting the resin molding 23 and the lead frame 21 along the notch 21a. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a robust light-emitting device having high power and excellence in heat resistant property, light resistant property, and heat dissipating property, to provide a resin-molded body constituting the light-emitting device, and to provide a method of manufacturing them. SOLUTION: In an light-emitting device 1 having a plurality of light-emitting elements 2, a lead pair 6 made of a first lead 4 and a second lead 5 electrically connected to the light-emitting element 2 is located, each being insulated, substantially symmetric with a base 3 mounting the plurality of light-emitting elements 2 as a center. A first resin-molded item 11 that coats at least part of the base 3 and the lead pair 6 and integrates these into one unit and a second resin-molded item 12 that is filled in a recess part 13 formed in the first resin-molded item 11 are both made of thermosetting resin. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a surface mount type light-emitting device having excellent light resistance and mass productivity. SOLUTION: The surface mount type light-emitting device has: a light-emitting element 10; a circuit board 20 on which the light-emitting element 10 is placed; a wall section 50 that is formed on the circuit board 20 and reflects light from the light-emitting element 10; and a light-transmitting sealing member 70 for covering the light-emitting element 10. The wall section 50 is formed of a thermosetting resin, adheres to the circuit board 20, and is formed by transfer molding. COPYRIGHT: (C)2009,JPO&INPIT