Patent ID: 8253330

Claim:
An airtight multi-layer array type LED, at least comprises a metal substrate, and two lead frames, the metal substrate being integrally formed with the airtight metal frame surrounding an accommodating space, nitrogen being filled in the accommodating space, an airtight sealing frame slot being formed around the upper surface of the airtight metal frame, an outer edge of a top surface of the airtight metal frame being upwardly and vertical extended with a sealing rack, the airtight metal frame being installed with two sets of sealing through hole pairs, each lead frame consisting of a connection board and a guide rod pair, each set of the sealing through hole pairs being served to accommodate one guide rod pair, inner ends of the guide rod pair being connected with a connection board, outer ends of the guide rod pair being connected to a power source, LED dices being installed on a bottom surface of the light output slot, each of the LED dices being electrically connected to each other through wire bonding, the LED dices being electrically connected to connection boards through a plurality of wires, a dice protection layer being formed on the LED dices, a fluorescent layer being formed on the dice protection layer, a silica gel layer being formed on the fluorescent layer for protecting the fluorescent layer, all interstitial space in the two sets of sealing through hole pairs being completely sealed with a sealing material, a silica glass package cover being installed on the airtight metal frame, the silica glass package cover being engaged and sealed to the sealing rack, and a space defined between the silica gel layer and the silica glass package cover being filled with nitrogen.