PROCESS METHOD AND DEVICE FOR IMPROVING LED EMISSION LUMINANCE

A process method for improving LED emission luminance is disclosed. A chip is fixed in a holder through the die attach adhesive, the chip is connected to a functional region of the holder; a high-reflectivity adhesive is filled onto a welding position in the functional region and then baked to dry,...

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Bibliographische Detailangaben
Hauptverfasser: Li, YIYUAN, ZHANG, MINGWU, RAO, DEWANG, ZUO, MINGPENG
Format: Patent
Sprache:eng
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Zusammenfassung:A process method for improving LED emission luminance is disclosed. A chip is fixed in a holder through the die attach adhesive, the chip is connected to a functional region of the holder; a high-reflectivity adhesive is filled onto a welding position in the functional region and then baked to dry, a red fluorescent adhesive is filled not higher than step of an inner wall of the holder and then centrifuged, and the stepped design of the holder can effectively prevent the fluorescent adhesive from extending to an upper layer; the first layer red fluorescent adhesive is centrifuged and then baked until it turns into a gel state, and a second layer green fluorescent adhesive is dispensed above the stepped position on the inner wall. The process method of the disclosed can increase the overall emission luminance and the uniformity of emission color of the LED lamp beads