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Light-emitting Element

A technology of light-emitting components and light sources, applied in electrical components, semiconductor devices, electric solid-state devices, etc., can solve the problems of low efficiency and the luminous efficiency of white LEDs cannot exceed 150lm/W.

Inactive Publication Date: 2014-12-31
FENG CHIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the current technology, the efficiency of phosphor powder to convert light energy is still lower than 60%, and it is impossible to effectively avoid the problem that the light emitted by the phosphor powder after being excited is absorbed by the overall light-emitting device again to reduce the light extraction efficiency, resulting in white LEDs emitting light. Efficiency cannot exceed 150lm / W

Method used

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Embodiment Construction

[0026] Such as figure 1 As shown, the present invention provides a light-emitting element, including a light source body 105, a lead frame 101, at least one wire 103, an LED chip 102, a Zener diode 107, a photonic crystal film 106 and a light-transmitting layer 104, Its relative position is that the lead frame 101 is placed on the bottom of the light source body 105, the LED die 102 is placed above the lead frame 101, and the photonic crystal film 106 is coated on at least a part of the surface of the LED die 102 and the light source. At least a part of the inner surface of the body 105 , the lead frame 101 including the at least one wire 103 are electrically connected to the LED die 102 and the Zener diode 107 .

[0027] The material for making the lead frame 101 needs to consider its electrical conductivity, thermal conductivity, mechanical strength, weldability and corrosion resistance. Commonly used materials are copper alloy, 42 alloy (nickel: 42%, iron: 58%), Kovar allo...

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Abstract

A light-emitting element provided by the present invention comprises a light source body, a conducting wire rack, LED grains, a Zener diode, a light transmission layer and a photonic crystal film. The conducting wire rack is arranged at the bottom of the light source body, the LED grains are arranged above the conducting wire rack, and the light transmission layer is arranged above the light source body. At least one conducting wire is connected with the LED grains and the Zener diode electrically, the photonic crystal film is arranged on the surfaces of the LED grains and the inner surface of the light source body, and the luminous efficiency is increased by utilizing the characteristics of the photonic crystal film.

Description

technical field [0001] The present invention relates to a structure of a compound white light emitting element, in particular to a light emitting element coated with a photonic crystal thin film inside a light source body. Background technique [0002] The development of the global LED industry is based on white LEDs. The life of white LEDs is more than 10 times longer than that of traditional lamps, and the brightness is also improved. White LEDs can also solve the environmental problems of mercury contained in waste lamps. Therefore, , White LED is considered to be an important lighting device that will replace all fluorescent lamps and incandescent bulbs in the future. At present, the luminous efficiency of white LEDs is more than double that of traditional incandescent bulbs. Most of them are composed of blue light emitted by blue LED grains and yellow phosphor (yttrium aluminum garnet, YAG). After the layer emits blue light, the yellow phosphor can be excited to emit w...

Claims

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Application Information

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IPC IPC(8): H01L33/48H01L33/58
CPCH01L33/48H01L33/483H01L33/504H01L33/58H01L33/60H01L2224/8592H01L2224/45139H01L2224/45144H01L2224/45147H01L2224/48091H01L2224/48247H01L2224/49107H01L2924/00014H01L2924/00
Inventor 赖俊峰
Owner FENG CHIA UNIVERSITY
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