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Light emitting diode package with encapsulant having curved and planar surfaces

A technology of light-emitting diodes and flat surfaces, applied in the field of solid-state light emitters, which can solve the problems of unsatisfactory applications of wide emission areas

Active Publication Date: 2016-03-23
CREELED INC (N D GES D STAATES DELAWARE NEWARK)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, these devices often produce a Lambertian emission pattern, which is not always ideal for wide emission area applications

Method used

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  • Light emitting diode package with encapsulant having curved and planar surfaces
  • Light emitting diode package with encapsulant having curved and planar surfaces
  • Light emitting diode package with encapsulant having curved and planar surfaces

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Embodiment Construction

[0153]The present invention is directed to different embodiments of LED package structures with light sources comprising single or multiple LED chips. LED packages can be arranged in different ways and are relatively small, but at the same time efficient, reliable and cost-effective. Compared to similar LED packages with fully hemispherical encapsulants, some embodiments according to the present invention can emit at the same or similar efficiency, but can be smaller and less expensive to manufacture.

[0154] A package according to the present invention can provide these improvements by having a conversion material and encapsulant arranged and shaped to take advantage of total internal reflection (TIR) ​​of light within the package. In other words, the encapsulant can be shaped such that light incident on the encapsulated encapsulant (at an angle greater than the critical angle for total internal reflection) is reflected back to the conversion material within the package so t...

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Abstract

LED packages are disclosed that are compact and efficiently emit light, and can comprise encapsulants with curved and planar surfaces. The packages can comprise a submount with a one or a plurality of LEDs, and in those with a plurality of LEDs each of the LEDs can emit the same or different wavelengths of light than the others. A blanket conversion material layer can be included on at least some of the LEDs and the submount. The encapsulant can be on the submount, over at least some of the LEDs, with each of the planar surfaces being vertical and aligned with one of the edges of the submount. The encapsulant can also have a upper curved surface with a relatively large radius of curvature, with the combination of curved and planar surfaces resulting in efficient emission of light with a relatively narrow emission profile.

Description

[0001] This application is a continuation-in-part of U.S. Patent Application Serial No. 13 / 770,389 filed February 19, 2013, which is U.S. Patent Application Serial No. 13 / 649,067 filed October 10, 2012 and Both of U.S. Patent Application Serial No. 13 / 649,052 are continuations-in-part and claim the benefit thereof, which claim U.S. Provisional Patent Application Serial No. 61 / 658,271, filed June 11, 2012, at Benefit of U.S. Provisional Patent Application Serial No. 61 / 660,231, filed June 15, 2012, and U.S. Provisional Patent Application Serial No. 61 / 696,205, filed September 2, 2012. Each of these applications cited in this paragraph is incorporated into this application by reference as if fully set forth herein. technical field [0002] The present invention relates to solid state light emitters and in particular to light emitting diode (LED) packages with one or more LEDs and a hybrid encapsulant comprising planar surfaces and curved surfaces . Background technique [00...

Claims

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Application Information

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IPC IPC(8): H01L25/075H01L33/54H01L33/50H01L33/48
CPCH01L25/0753H01L33/486H01L33/54H01L2933/005H01L2224/32257H01L2224/48091H01L2224/48247H01L2224/48465H01L2224/73265H01L33/505H01L33/58H01L2924/00014H01L2924/00
Inventor 杰西·赖尔策安德鲁·西格诺尔约瑟夫·盖茨·克拉克迈克尔·约翰·贝格曼
Owner CREELED INC (N D GES D STAATES DELAWARE NEWARK)