2-color light emitting element

Abstract

Abstract PURPOSE:To remarkably increase the practical range of light emission by electrically connecting the electrode of the side different from that connected to a common lead terminal of two light emitting diode chips having different emitting colors to individual two lead frames, and connecting the different electrodes of the two chips of the same emitting color by a conductive wiring. CONSTITUTION:First red and green light emitting diode chips 1a, 2a, are bonded to a lead frame with conductive adhesive like silver paste to electrically connect their N-electrodes, i.e., cathodes with the common lead terminal 4a of the lead frame 4. Second diode chips 1b, 2b identical with the chips 1a, 2a are similarly bonded to electrically connect their P-electrodes, i.e., anodes with their corresponding leads 4b, 4c. These chips are paired with ones for the same color, and the individual pairs (1a, 1b) and (2a, 2b) are interconnected by conductors 5 at their ends opposite to the lead frame.

Inventors

• 👤 Yoshinori Katsura

Bibliographic Details