White light LED luminescence apparatus

A light-emitting device, LED chip technology, applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of short product life, achieve the effect of improving heat dissipation performance and simplifying the packaging process
CN102593340AInactive Publication Date: 2012-07-18TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a white light LED luminescence apparatus. The luminescence apparatus comprises an LED chip, a heat radiation substrate, a fluorescence LTCC slice, a reflection cup and an electrode framework. The LED chip is bonded on the heat radiation substrate. The fluorescence LTCC slice is sleeved on the LED chip and coats an upper surface and four side surfaces of the LED chip. The reflection cup is sleeved around the fluorescence LTCC slice. The LED chip is connected to the electrode framework through a leading wire. The material of the fluorescence LTCC slice is a CaO-B2O3-SiO2: RE system or a BaO-TiO2-SiO2-B2O3: RE system. The white light LED luminescence apparatus has the following advantages: firstly, only employing a simple structure-the fluorescence LTCC slice, lots of light of the side surfaces of the LED chip can be outputted and utilized, and since the fluorescence LTCC slice is ceramic material, the apparatus has effects of stabilizing light and controlling light scattering; secondly, since the fluorescence LTCC slice has high thermal conductivity 2-5W / (m*K), through the using of the fluorescence LTCC slice, a heat radiation channel of a whole surface of the chip is realized, and heat radiation performance of a product is improved.
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Description

technical field

[0001] The invention relates to a white light LED lighting device, belonging to the technical field of LED light sources. Background technique

[0002] Diodes (LEDs) using semiconductor PN junctions as light sources came out in the early 1960s. Red LEDs first appeared in 1964, followed by yellow LEDs. It was not until 1994 that blue and green LEDs were successfully developed. In 1996, white LED was successfully developed by Nichia Company of Japan.

[0003] No matter from the luminous mechanism and luminous efficiency of LED, or from the development and application speed of this technology, it can be called a brand-new light source, so LED semiconductor light is called "the fourth generation light source". From the point of view of practical application, due to its small size, strong shock resistance, low power consumption, long service life, strong safety and reliability and many other advantages, in a sense, it can be said that its application field and sc...

Claims

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