LIGHT-EMITTING DEVICE, ANISOTROPIC CONDUCTIVE PASTE, AND METHOD OF MANUFACTURING LIGHT-EMITTING DEVICE
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United States of America Patent
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app pub date -
Mar 23, 2016
filing date -
Sep 26, 2013
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Abandoned
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Abstract
In order to provide a light emitting device having high connection reliability, the light-emitting device includes a board provided with a wiring pattern, an anisotropic conductive paste arranged on an board electrode of the wiring pattern, and a light-emitting element embedded in the anisotropic conductive paste, and at least one of the board electrode and the element electrode is plated with an AuSn alloy layer. The anisotropic conductive paste contains an epoxy compound, an acid anhydride, white inorganic particles, and conductive particles obtained by coating resin particles with an Au coating layer. It is possible to maintain electrical connection between the board electrode and the element electrode by the Au coating layers of the conductive particles even when a crack is generated in a eutectic bonding portion. Therefore, it is possible to obtain high connection reliability.
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