White light illuminating device

A light-emitting device and white light technology, applied in luminescent materials, sustainable buildings, electrical components, etc., can solve the problems of poor color rendering, lack of red spectrum of phosphors, white light distortion and impurity, etc.

Inactive Publication Date: 2004-10-20
郑荣彬
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Problems solved by technology

[0005] However, the pomegranate-based phosphor activated by cerium is essentially a yellow phosphor, in which a gadolinium nitride-based semiconductor light-emitting element that can emit short-wavelength blue light is used as the light source, and the light source emits blue light to excite yellow fluor...

Method used

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Embodiment approach

[0046] (1). If figure 1 As shown, the device is centered on the optical semiconductor 10, the bottom of which is a conductor connected to the left lead frame 30 by conductive glue 12, the fluorescent layer 20 is packaged on the optical semiconductor 10, and the lead S is connected to the optical semiconductor 10. Shuttle out and connect to the right lead frame 32 to form an electrical circuit, wherein the transparent glue 80 covers the optical semiconductor 10, the fluorescent layer 20 and the upper half of the left and right lead frames 30, 32 to form a granular structure.

[0047] The optical semiconductor 10 is preferably made of a nitride-based compound semiconductor, which can emit blue light as a light source; the fluorescent layer 20 is formed by mixing red and green fluorescent powder and transparent glue in an appropriate proportion. When the optical semiconductor 10 emits blue light, the main peak wavelength of the blue light is in the range of 430-480nm, and the red...

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Abstract

The device contains optical semiconductor as light source of blue light. Fluorescent layer is glued on the optical semiconductor. The fluorescent layer is prepared by even mixing red and green luminescent powders and transparent glue. Red fluorescence in fluorescent layer is emitted light different from blue spectrum (wavelength) excited by blue light, and green fluorescence in fluorescent layer is emitted light different from blue spectrum excited by blue light. Mixing the said two different spectrums (wavelengths) and unexcited blue spectrum form white light. Fluorescent layer mixed from red or jacinth and green is able to influence wavelength of blue light source, emitting light different from blue light so as to obtain white light illuminator generating pure white light with higher intensity.

Description

Technical field [0001] The invention relates to a white light emitting device, in particular to a pure white light emitting diode (LED) device. Background technique [0002] According to the well-known white light LED, its typical example, such as Taiwan Patent Publication No. 385063 (new white light LED) invention case, it uses ultraviolet light semiconductor as light source to excite red, green, blue (R, G, B ) The cladding layer mixed with three-color fluorescent powder and transparent glue makes white light appear. [0003] However, the light source of this light-emitting device is ultraviolet light, which will damage the epoxy resin structure commonly used at present, resulting in the problem of light attenuation in the final (white light), and the brightness of white light is not strong, especially in this case. The cladding layer is made of red, green, and blue fluorescent powders mixed together. One of the disadvantages is that the ratio of the three pigments and th...

Claims

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Application Information

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IPC IPC(8): C09K11/00H01L33/50
CPCY02B20/181Y02B20/00
Inventor 郑荣彬
Owner 郑荣彬
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