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Planar light-emitting module

A technology for light-emitting components and light-emitting elements, which is applied to plane light sources, semiconductor devices of light-emitting elements, optical elements used to change the spectral characteristics of emitted light, etc. and the effect of uneven illumination

Active Publication Date: 2015-04-29
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a diffusing lens or a diffusing sheet has the following problems: not only a decrease in the amount of light is caused, but also an increase in cost

Method used

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  • Planar light-emitting module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 It is a schematic cross-sectional view of the planar light emitting module 10 according to one embodiment of the present invention. The planar light-emitting component 10 has multiple pairs of electrodes 14 (anodes) and electrodes 16 (cathodes) formed on a substrate 12 . A light emitting element 18 is fixed to each electrode 14 by a fixing member 20 . The light emitting element 18 and the electrode 14 are electrically connected through the fixing member 20 , and the light emitting element 18 and the electrode 16 are electrically connected through the electric wire 22 .

[0033] The first transparent resin layer 24 integrally covering the plurality of light emitting elements 18 is provided on the substrate 12 . The first transparent resin layer 24 is formed so as to have a uniform thickness L in a direction perpendicular to the light emitting surface 18 a of the light emitting element 18 . Two kinds of phosphors are dispersed in the first transparent resin la...

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Abstract

A planar light-emitting module (10) includes a planar substrate (12) applied with a reflection film (17), a light-emitting element (18) mounted on the reflection film side of the substrate, a first transparent resin layer (24) disposed to encapsulate at least the light-emitting element, and a second transparent resin layer (30) disposed to sandwich an air layer (25) between the second transparent resin layer and the first transparent resin layer. A phosphor for converting the wavelength of light radiated from the light-emitting element is disposed by dispersion in the first and second transparent resin layers and the phosphor is selected such that when the second transparent resin layer is viewed from the outside, pseudo-white light is observed.

Description

technical field [0001] The invention relates to a thin planar light-emitting component. Background technique [0002] Conventionally, fluorescent lamps and electric lamps have been used in many cases as lighting fixtures. In recent years, various white light-emitting devices using light-emitting diodes have been developed as substitutes for these lamps from the viewpoint of power consumption and lifetime. [0003] The light emitted by the light-emitting diode has strong directivity and a small light-emitting area. Therefore, it is difficult to realize illumination of a large area with uniform brightness by a single light emitting diode. Therefore, a lamp using a plurality of light-emitting diodes in parallel has been considered, but if large brightness unevenness occurs directly above and around the light-emitting diodes, uneven illuminance will occur. Therefore, in order to reduce the unevenness of illuminance, it has been implemented to arrange a diffusion lens or a dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/075H01L33/52F21V9/40
CPCH01L33/504H01L33/507H01L2224/48091H01L2224/73265H01L2224/45144H01L2224/45139F21Y2105/12F21Y2105/10F21Y2115/10H01L2924/181H01L2924/00011F21V3/061F21V3/12F21V3/062F21V9/40F21V9/32H01L2924/00014H01L2924/00H01L2924/01049H01L2924/00012H01L2924/01005F21V9/30
Inventor 大长久芳伊藤和弘
Owner KOITO MFG CO LTD