Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – Plural light emitting devices
Patent
1992-05-18
1993-11-30
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
Plural light emitting devices
257 98, 257 99, H01L 3300
Patent
active
052668177
ABSTRACT:
A light emitting diode includes a base with a recess and a housing mounted above the base. A conductive plate is mounted in the recess with a red chip, a green chip, and two blue chips disposed thereon, all of which being enclosed by the housing. A first pin has a first contact electrically connected to the red chip and a second contact extending downward and out of the base. A second pin has a first contact electrically connected to the green chip and a second contact extending downward and out of the base. A third pin has a first contact electrically connected to the blue chips and a second contact extending downward and out of the base. A common cathode pin has a first contact electrically connected to the conductive plate and a second contact extending downward and out of the base. Different intensities of light of the three primary colors emitted by the chips result in any desired colored light. A bottom surface and a peripheral wall of the recess are covered by a scattering agent, providing a complete mixing of light emitted by the chips.
REFERENCES:
patent: 4878107 (1989-10-01), Hopper
Bednarek Michael D.
Mintel William
Tran Minhloan
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