LED device with protective circuit of diode

A technology of light-emitting diodes and diodes, applied in circuits, electrical components, electric solid-state devices, etc., can solve the problems of reduced chip life, inability to effectively screen light-emitting diode chips, damage to light-emitting diode chips, etc., and achieve high reliability.
CN1873974AInactive Publication Date: 2006-12-06ι‚’ι™ˆιœ‡δ»‘
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ι‚’ι™ˆιœ‡δ»‘
Publication Date
2006-12-06
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The LED device includes following parts: a LED for converting electrical energy to electromagnetic wave; a set of lead wire frames in use for connecting LED to external electrical source; a group containing multiple Zener diodes, and at least one set being as back to back coupling or face to face coupling. Through gold wire or aluminum wire being connected to a lead wire frame, the set of Zener diode is connected to LED in parallel. Besides function of electrostatic protection, the invention can carry out test of reverse voltage in order to screen out products with potential problems. The invention also makes LED device possess overvoltage protection so as to be possible to maintain service life and quality in severe condition.
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Description

technical field

[0001] The invention relates to a light emitting diode device, in particular to a light emitting diode device with a diode protection circuit. Background technique

[0002] Conventional light-emitting diode devices such as figure 1 As shown, the light-emitting diode chip 100 is placed on a metal lead frame, and it is electrically connected to the positive electrode 131 and the negative electrode 132 of the metal lead frame by using gold wire or aluminum wire to form an electrical path. The metal lead frame part A die-bonding area and a reflective plate 110 are formed by being covered by a plastic shell, and the reflective plate is covered with an epoxy resin 150 with good light transmission. Sometimes in order to provide better LED chip protection or optical functions, the LED is first covered with silicone (Silicone), or even mixed with phosphor powder in the silicone or epoxy resin to match the blue LED chip to produce white light. This device Has been wi...

Claims

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