Manufacturing method of light emitting diode package
View Patent ↗The invention provides a side-view LED having an LED window opened to a side to emit light sideward. A pair of lead frames each act as a terminal. An LED chip is attached to a portion of the lead frame and electrically connected thereto. A package body houses the lead frames and has a concave formed around the LED chip. Also, a high reflective metal layer is formed integrally on a wall of the concave. A transparent encapsulant is filled in the concave to encapsulate the LED chip, while forming the LED window. In addition, an insulating layer is formed on a predetermined area of the lead frames so that the lead frames are insulated from the high reflective metal layer. The side-view LED of the invention enhances light efficiency and heat release efficiency with an improved side-wall reflection structure.
1. A manufacturing method of a side-view light emitting diode comprising: preparing lead frames and forming an insulating layer thereon having a pattern; forming a package body having a concave recess after forming the insulating layer, the package body electrically insulating the lead frames from each other; forming a high reflective metal layer on an inner surface of a side wall of the concave recess after forming the package body, the high reflective metal layer being insulated from the lead frames by the insulating layer; mounting an LED chip on an opening area of the lead frames; and filling the concave recess with a transparent encapsulant to encapsulate the LED chip, wherein the concave recess is formed to expose portions of lead frames on the bottom surface thereof.
2. The method according to claim 1 , wherein the insulating layer is formed by a deposing process.
3. The method according to claim 1 , further comprising forming an intermediate layer on the inner surface of the side wall of the concave, so that the high reflective layer is highly bonded to the package body before forming the high reflective metal layer.
4. The method according to claim 3 , wherein the intermediate layer is formed by a deposing process.