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AC light-emitting diode device with high reliability and long service life

A technology of light-emitting diodes and rectifier diodes, which is applied in the direction of converting irreversible AC power input to DC power output, lighting devices, lighting device components, etc. And other issues

Inactive Publication Date: 2012-06-20
FORWARD ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the reverse bias voltage of the light-emitting diode is too large, a high reverse bias leakage current will be generated, which will lead to the breakdown of the light-emitting diode chip, or make the overall luminous life and reliability unstable.
[0004] Secondly, the LED segments of the existing AC LEDs are not lit at the same time. For example, when the AC power source 10 is in a positive cycle, only the LED segments a, e, and c are turned on and lit, and when the AC power source 10 is in a negative cycle, only the LED segments Light-emitting diode sections b, e, and d turn on and light up
Therefore, only 2 / 3 of the LED segments can be lighted in the structure of the existing AC LEDs, and because the LED segments of the existing AC LEDs are alternately turned on, there will be light and dark changes to generate light sources. flickering phenomenon

Method used

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  • AC light-emitting diode device with high reliability and long service life
  • AC light-emitting diode device with high reliability and long service life
  • AC light-emitting diode device with high reliability and long service life

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Embodiment Construction

[0021] Please also refer to figure 2 and image 3 , figure 2 is a schematic diagram of a preferred embodiment of the present invention, image 3 It is a system architecture diagram of a preferred embodiment of the present invention. As shown in the figure, the high-reliability and long-life AC LED device of the present invention includes a rectifier diode group 21 , a LED group 22 , and an AC power source 20 . The LED group 22 is composed of a plurality of serially connected LED microchips, preferably including 48 serially connected LED microchips 2201-2248, and the 48 LED microchips 2201-2248 are fabricated on a chip 51 Inside. As shown in FIG. 4, the layout of these LED microchips 2201-2248 is a non-matrix arrangement ( Figure 4A ), or matrix arrangement ( Figure 4B ).

[0022] Next, please refer to image 3 and Figure 5 The aforementioned rectifying diode group 21 includes four rectifying diodes, which are respectively first, second, third and fourth rectifyin...

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Abstract

The invention discloses an AC light-emitting diode device with high reliability and long service life, which comprises a light-emitting diode set, a rectifying diode set and an AC power supply. The light-emitting diode set consists of a plurality of light-emitting diode microchips connected in series, and the rectifying diode set comprises four rectifying diodes. The AC power supply is electrically connected to the rectifying diode set, and the rectifying diode set is then electrically connected to the light-emitting diode set. The AC power supply comprises a positive periodic voltage and a negative periodic voltage, and the rectifying diode set enables the light-emitting diode set to be conducted by the positive periodic voltage and the negative periodic voltage so as to prevent the light-emitting diodes from bearing high reverse bias voltage. Accordingly, the light-emitting life is prolonged, and the reliability is improved.

Description

technical field [0001] The present invention relates to a light-emitting diode device, in particular to an AC light-emitting diode device with high reliability and long service life suitable for AC power supply. Background technique [0002] With the increasing popularity of light-emitting diodes, the industry has developed AC light-emitting diodes (AC LEDs) suitable for AC power. The AC light-emitting diode can directly use the AC power provided by the mains, which has effectively solved the problem that the light-emitting diode cannot be directly used under the AC power. However, there are still problems that need to be improved in the process of AC light-emitting diodes. For example, the reverse bias of the AC light-emitting diode will cause the light-emitting diode to generate a reverse high-voltage leakage current. [0003] Existing AC light-emitting diodes are mainly designed with bridge rectification architecture, such as figure 1 AC LEDs shown. As shown in the fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V23/00H05B37/02H02M7/08H01L25/075F21Y101/02F21K9/238F21K9/278F21Y115/10
Inventor 蓝培轩杨仁华
Owner FORWARD ELECTRONICS CO LTD
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