LIGHT EMITTING DEVICE
2 Assignments
0 Petitions
Accused Products
Abstract
A light emitting device includes: a ceramic substrate; a plurality of LED chips; a printed resistor(s) connected in parallel with the plurality of LED chips; a dam resin made of a resin having a low optical transmittance; a fluorescent-material-containing resin layer; and an anode-side electrode and a cathode-side electrode, (a) which are provided on a primary surface of the ceramic substrate so as to face each other along a first direction on the primary surface and (b) which are disposed below at least one of the dam resin and the fluorescent-material-containing resin layer. With the configuration in which a plurality of LEDs, which are connected in a series-parallel connection, are provided on a substrate, it is possible to provide a light emitting device which can achieve restraining of luminance unevenness and an improvement in luminous efficiency.
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Citations
24 Claims
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1-9. -9. (canceled)
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10. An LED illuminating device comprising:
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a mounting surface; and a light emitting device mounted on said mounting surface, including; (i) a substrate having a primary surface and a back surface that is faced toward said mounting surface, (ii) a plurality of LED chips positioned around a center of the primary surface of the substrate, (iii) a resin frame formed on the primary surface of the substrate and provided annularly so as to surround a mounting area in which the plurality of LED chips are provided, the resin frame having light reflectivity, (iv) a sealing resin provided on the mounting area, and (v) an anode-side electrode land and a cathode-side electrode land which are electrodes electrically connected to a voltage supply circuit in said LED illuminating device and to the plurality of LED chips, the anode-side electrode land and the cathode-side electrode land being provided on the primary surface of the substrate and outside the resin frame. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification