Light emitting device
A technology of light-emitting devices and light-emitting elements, which is applied in household stoves/stoves, heating methods, lighting and heating equipment, etc., can solve problems such as difficulty in carrying several chips, increased resin stress, and influence on chips and metal wires, and achieves improved Reliability of luminescent characteristics, effect of reducing resin stress
Inactive Publication Date: 2006-07-05
KK TOSHIBA
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Problems solved by technology
[0025] The second problem is that, as shown in the figure, the closed part 901 is roughly rectangular, and the thickness of the side wall of the resin part 903 is also very thin, and the mechanical strength is not enough.
However, since the silicone resin is relatively soft, when the side wall of the resin portion 903 is thin, external force from the lateral direction may affect the chip and the metal wire.
For example, when picking a light-emitting device from the side for assembly and inspection, the force touches the chip and wires, which may cause deformation of the wires, etc.
[0026] The third problem is that, as shown in the figure, when the opening 901 has a substantially rectangular shape, the amount of resin filled therein increases, and the resin stress also increases.
[0030] As explained above, the previous light-emitting devices are not easy to carry several chips, and there is still room for improvement in terms of reliability.
Method used
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no. 2 specific example 1
[0171] As in the second specific example, the sealing body 111 covers only the periphery of the light emitting element 106 . However, in this specific example, an open space is formed outside the sealing body 111, and another sealing body is not provided.
[0172] In this specific example, only the vicinity of the bottom surface of the opening 105 where the light-emitting element 106 is fixed is surrounded by the sealing body 111, so that the size of the light-emitting part can be reduced, the luminance can be improved, and the light-collecting effect caused by the reflective surface 104 can be improved.
[0173] In particular, in this specific example, the substantially hemispherical sealing body 111 forms a light-emitting point surrounded by the reflective surface 104, so that the same optical light-collecting effect is obtained as in the previous lamp.
[0174] Furthermore, as in the second specific example, since the sealing body 111 surrounds the entire Au metal wire 109,...
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A light emitting device includes a plurality of chips efficiently disposed in a limited space of an opening that has an approximately elliptical or elongate-circular opening shape. The device includes a lead having a slit formed between a portion for bonding a wire to and a portion for mounting chips on, thereby to prevent extrusion of an adhesive and eliminate defective bonding.
Description
[0001] This application is a divisional application of a patent application with an application date of April 3, 2002, an application number of 02118697.9, and an invention title of "light emitting device". technical field [0002] The present invention relates to a light-emitting device, and particularly to a light-emitting device having excellent light-emitting characteristics and high reliability. Background technique [0003] Light-emitting devices equipped with semiconductor light-emitting elements such as LEDs (Light Emitting Diodes) are widely valued as low-cost, long-life light-emitting devices, and are widely used as indicators, light sources, flat-panel display devices, or liquid crystal displays. Backlighting etc. [0004] As a typical example of such a light emitting device, there is a device in which a semiconductor light emitting element is mounted on a resin stem. [0005] Fig. 37 is a conceptual diagram of a typical example of a conventional light emitting d...
Claims
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IPC IPC(8): H01L25/16H01L25/075H01L33/00H01L23/28H01L23/29H01L23/31H01L33/38H01L33/50H01L33/54H01L33/56H01L33/62
CPCH01L25/0753H01L2224/16145H01L2924/01067H01L33/483H01L2924/01025H01L2224/32245H01L2924/12041H01L2224/49113H01L2224/16H01L25/167H01L2224/48091H01L33/501H01L2924/01039H01L33/54H01L2924/01079H01L33/56H01L33/62H01L2924/01063H01L2224/48247H01L33/38H01L2924/0102H01L2924/01057H01L2933/0091H01L2224/45144H01L2924/01012H01L2224/73265H01L2224/05573H01L2224/05568H01L2924/181H01L2224/06102H01L2224/1703H01L2924/00014H01L2224/05644H01L2924/00012F24C15/2071H01L2924/00
Inventor 新田康一下村健二押尾博明小松健
Owner KK TOSHIBA