Light-emitting device

A technology of light-emitting devices and light-emitting chips, applied in the direction of lighting devices, light sources, components of lighting devices, etc., can solve problems such as unevenness, increased manufacturing costs, changes, etc., achieve high-efficiency light output, prolong service life, and avoid light Fading effect

Inactive Publication Date: 2011-05-11
AUROTEK CORP
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  • Application Information

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Problems solved by technology

[0003] Classified by the manufacturing method of the white light source of the white light LED, it is usually possible to add YAG (Y 3 Al 5 o 12 : Ce and its variable derivatives) yellow phosphor; however, this white LED made of blue LED chip and yellow phosphor has the following disadvantages: since blue light accounts for most of the luminescent spectrum, the color temperature The phenomenon of high and uneven occurs, so the opportunity to increase the interaction between blue light and yellow light phosphor to reduce the intensity of blue

Method used

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no. 1 example

[0040] The present invention relates to the technology of LED light source, and the photonic crystal technology cooperates with the existing packaging technology; please refer to Figures 2A to 2D , is the manufacturing method of the first embodiment of a light-emitting device provided by the present invention.

[0041] Such as Figure 2A As shown, at least one light-emitting chip 21 is arranged on a substrate 20; the substrate 20 is, for example, a circuit board, a lead frame or a reflective cup, etc., and there is no specific limitation. In this embodiment, a circuit board is used for illustration; The light emitting chip 21 mentioned above is a light emitting diode (light emitting diode, LED). , is a well-known technology in the industry, and is not limited to the above-mentioned wire-bonding method, and it is not a technical feature of this case, so it will not be described in detail, and is hereby stated.

[0042] Such as Figure 2B As shown, an encapsulation layer 22 of...

no. 2 example

[0054] see Figures 3A to 3D , discloses the manufacturing method of the second embodiment of the light-emitting device of the present invention. The difference between this embodiment and the first embodiment lies only in the formation position of the optical crystal layer, and the designs of other related light-emitting devices are roughly the same, so the structure and function of the same parts will not be described repeatedly, and only the differences will be described below. It is hereby stated.

[0055] Such as Figure 3A As shown, at least one light-emitting chip 31 is disposed on a substrate 30 .

[0056] Such as Figure 3B As shown, an optical crystal layer 33 is formed on the surface of the light-emitting chip 31, and the optical crystal layer 33 is a structure composed of a multi-nanoparticle arrangement, as shown in the figure. Formed on the light-emitting wafer 31 by means of electron beam lithography or electron beam lithography.

[0057] Such as Figure 3...

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Abstract

The invention discloses a light-emitting device which is characterized in that a photon crystal is formed on a light-emitting wafer, and then a fluorescence layer is covered, so that rays ejected from the light-emitting wafer is scattered by the photon crystal and then reacts with the fluorescence layer to excite colorful lights, and then the colorful lights are subjected to light mixing, thus white lights are generated and then are sent out outside. Thus the purpose of promoting the light extraction efficiency is achieved so as to avoid the defect of poor scant luminous efficiency of the existing light-emitting device.

Description

technical field [0001] The invention relates to a light emitting device, in particular to a light emitting device which generates white light through a light emitting chip. Background technique [0002] Light emitting diode (light emitting diode, LED) as a lighting source has the advantages of small size, low energy consumption, long life, fast response, safe low voltage, good directionality, etc., and has broad application prospects in lighting and display. In recent years, the efficiency of LED has been continuously improved. As an electric light source, high-power white LED has become a popular lighting source in the industry. Combined with solar cells, which are also an environmentally friendly and sustainable source of energy, the white LED will be an ideal eco-friendly lighting. [0003] Classified by the manufacturing method of the white light source of the white light LED, it is usually possible to add YAG (Y 3 al 5 o 12 : Ce and its variable derivatives) yellow ...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V19/00F21V9/10H01L33/00F21Y101/02F21V9/40
Inventor 叶政果孙瑞宏
Owner AUROTEK CORP
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