Opto-electronic assembly having an encapsulant with at least two different functional zones

a technology of encapsulant and functional zone, applied in the direction of solid-state devices, semiconductor/solid-state device details, transportation and packaging, etc., can solve the problems of high cost, inconvenient use of leds, and increased internal operating temperature, so as to improve performance and reduce the vulnerability to fatal damage
US20050133810A1Inactive Publication Date: 2005-06-23ROBERTS JOHN K +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ROBERTS JOHN K
Publication Date
2005-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A radiation emitting device of the present invention includes at least one radiation emitter, first and second electrical leads electrically coupled to the radiation emitter, and an integral encapsulant configured to encapsulate the radiation emitter and a portion of the first and second electrical leads. The encapsulant has at least a first zone and a second zone, where the second zone exhibits at least one different characteristic from the first zone. Such different characteristics may be a physical, structural, and / or compositional characteristic. Preferably, the at least one different characteristic includes at least one of the following: mechanical strength, thermal conductivity, thermal capacity, coefficient of thermal expansion, specific heat, oxygen and moisture impermeability, adhesion, and transmittance with respect to radiation emitted from the radiation emitter. The radiation emitter may be in a form of an emitter, and is preferably an LED.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a divisional application of U.S. patent application Ser. No. 10 / 338,540, entitled “METHOD OF MAKING RADIATION EMITTER DEVICES,” filed on Jan. 8, 2003, by John K. Roberts et al., which is a divisional application of U.S. patent application Ser. No. 09 / 835,278, entitled “RADIATION EMITTER DEVICE HAVING AN ENCAPSULANT WITH DIFFERENT ZONES OF THERMAL CONDUCTIVITY,” filed on Apr. 13, 2001, by John K. Roberts et al., which claims priority under 35 U.S.C. §119(e) on U.S. Provisional Patent Application No. 60 / 265,489, entitled “RADIATION EMITTER DEVICES AND METHOD OF MAKING THE SAME,” filed on Jan. 31, 2001, by John K. Roberts et al., and is a continuation-in-part of U.S. patent application Ser. No. 09 / 426,795, filed on Oct. 22, 1999, entitled “SEMICONDUCTOR RADIATION EMITTER PACKAGE,” by John K. Roberts et al., now U.S. Pat. No. 6,335,548, which claims priority under 35 U.S.C. §119(e) on U.S. Provisional Patent Application ...

Claims

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