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LED (Light Emitting Diode) flip lighting device close to natural spectrum

A lighting device and spectrum technology, which is applied to semiconductor devices of light-emitting elements, lighting devices, semiconductor devices, etc., can solve the problems of discontinuous spectrum, complicated and inconvenient process, and low color rendering, so as to promote rapid development and spectral continuity Good, high color rendering effect

Inactive Publication Date: 2016-09-21
RENMIN UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies, such as: blue light chip + color-changing phosphor; blue light chip + red chip + yellow phosphor mixed to obtain white light, have many shortcomings such as discontinuous spectrum, low color rendering, poor light efficiency, complicated process and inconvenient industrialization. Thus affecting the development of LED natural light spectrum light source

Method used

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  • LED (Light Emitting Diode) flip lighting device close to natural spectrum
  • LED (Light Emitting Diode) flip lighting device close to natural spectrum

Examples

Experimental program
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Embodiment 1

[0053] The LED flip-chip lighting device with a near-natural spectrum provided by the present invention has a structural schematic diagram as shown in figure 1 shown;

[0054] It consists of an aluminum nitride substrate 1, a circuit 2 located on the aluminum nitride substrate, positive and negative electrodes 3 and 4, a dam 5 and several chip units 6;

[0055] Dam 5 surrounds all chip units 6;

[0056] The positive and negative electrodes 3 and 4 are respectively located on the substrate 1 in areas not surrounded by the dam;

[0057] Each chip unit 6 is connected to the circuit through solder paste;

[0058] Each chip unit consists of an LED flip chip 7, a phosphor layer 8 and a transparent fluorescent ceramic layer 9 from bottom to top, and the phosphor layer surrounds the LED flip chip, and the transparent fluorescent ceramic layer 9 covers the phosphor layer 8 surface;

[0059] A chip electrode 10 is provided at the bottom of the LED flip chip, and the chip electrode i...

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Abstract

The invention discloses an LED (Light Emitting Diode) flip lighting device close to a natural spectrum. The device comprises an LED flip chip, wherein a fluorescent powder layer and a transparent fluorescent ceramic layer are arranged on the flip chip in sequence; the fluorescent powder layer surrounds the LED flip chip; and the transparent fluorescent ceramic layer covers the upper surface of the fluorescent powder layer. The device has the advantages of good spectrum continuity, high color rendering and high lighting effect, and the requirements for the lighting LED are well met.

Description

technical field [0001] The invention belongs to the field of LED lighting and relates to an LED flip-chip lighting device close to natural spectrum. Background technique [0002] LED is a solid-state semiconductor component, which can directly convert electrical energy into lighting light. LED light source is called green light source. It has the characteristics of energy saving, environmental protection, durability, and small size. It is gradually replacing conventional lighting sources and becoming mainstream lighting. development trend. With the expansion of the LED industry, the lighting field is widely used, and the influence of the LED light source spectrum on the human eye has begun to attract attention. It is well known that the natural light spectrum is the most ideal light source, which gives people a comfortable feeling and is generally accepted by the public. The LED light source spectrum with a high degree of fitting has not yet come out. Existing technologies...

Claims

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Application Information

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IPC IPC(8): H01L33/50F21K9/90F21Y115/10
CPCH01L33/504F21K9/90H01L33/505H01L33/508
Inventor 曹永革申小飞麻朝阳马冉
Owner RENMIN UNIVERSITY OF CHINA