CN109599471A - A kind of white LED light source enhancing color displays - Google Patents
A kind of white LED light source enhancing color displays Download PDFInfo
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- CN109599471A CN109599471A CN201811344042.1A CN201811344042A CN109599471A CN 109599471 A CN109599471 A CN 109599471A CN 201811344042 A CN201811344042 A CN 201811344042A CN 109599471 A CN109599471 A CN 109599471A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
Abstract
The invention discloses the white LED light sources that one kind can enhance color displays, it includes the phosphor gel of blue-light LED chip and its outer cladding, phosphor gel is mixed by fluorescent powder and silica gel, fluorescent powder is by a kind of narrow bandwidth green emitting phosphor or a variety of narrow bandwidth green emitting phosphors, a kind of narrow bandwidth red fluorescence powder or a variety of narrow bandwidth red fluorescence powders mix, so that the white-light spectrum of the white LED light source has continuous spectrum, have wave-length coverage in the blue emission peak-to-peak value of 450~460nm simultaneously, green emission peak-to-peak value of the wave-length coverage in 520~540nm, red emission peak-to-peak value of the wave-length coverage in 610~640nm, and blue light emission peak, green emission peak, there is peak valley between any two in red emission peak, the relative intensity at red emission peak is at least more than green emission peak Relative intensity 2/3；Advantage is that photographed object can be made to increase color appearance, increases vividness, and be able to achieve the white light of high color rendering index (CRI) and high colour gamut under different-colour.
Description
Technical field
The present invention relates to a kind of white LED light sources, can enhance the white LED light source of color displays more particularly, to one kind.
Background technique
White light LEDs and light source are widely used in various illuminating devices, and in different illumination places, the requirement to light is
Difference, such as to the difference of color appearance, in the illumination place of food, veterinary antibiotics and clothes, it is desirable that illumination light can more be shown
The bright-coloured and lively degree of existing photographed object, such as water fruits and vegetables can seem fresher, and food is more tempting, and clothes are more
It is bright-coloured colorful.
Currently, LED light in the market generally uses blue-ray LED excitation green, yellow or red fluorescence powder to form white light, it is white
Light has various colour temperatures, general by improving colour rendering index, so that photographed object is shown nature color, still, these LED light do not enhance
The effect of color or colorful, for this purpose, some LED light are on the basis of white light lamp bead by increasing colored lamp bead, although can increase
Strong certain colors, but distortion phenomenon, such as white can occur to other colors.
Summary of the invention
Technical problem to be solved by the invention is to provide the white LED light sources that one kind can enhance color displays, not only
With color resolution height, enhancing photographed object increases color appearance, increases the vividness of photographed object, and can be realized not homochromy
The white light of temperature lower high color rendering index (CRI) and high colour gamut.
The technical scheme of the invention to solve the technical problem is: a kind of white light LEDs that can enhance color displays
Light source, including blue-light LED chip, the blue-light LED chip are coated with phosphor gel, and the phosphor gel is by fluorescence
Powder and silica gel mix, it is characterised in that: the fluorescent powder is green by a kind of narrow bandwidth green emitting phosphor or a variety of narrow bandwidths
Color fluorescent powder, a kind of narrow bandwidth red fluorescence powder or a variety of narrow bandwidth red fluorescence powders mix, so that the white LED light source
White-light spectrum there is continuous spectrum, while there is blue emission peak-to-peak value, wavelength model of the wave-length coverage in 450~460nm
The green emission peak-to-peak value of 520~540nm, wave-length coverage are trapped among in the red emission peak-to-peak value of 610~640nm, and blue light is sent out
It penetrates peak, green emission peak, red emission peak and there is peak valley between any two, the relative intensity at red emission peak is sent out at least more than green light
Penetrate the 2/3 of the relative intensity at peak.
The narrow bandwidth green emitting phosphor is band spectrum and half-peak breadth with green emission peak under blue light excitation
Green emitting phosphor less than 70 nanometers；The narrow bandwidth red fluorescence powder is the band with red emission peak under blue light excitation
The red fluorescence powder of shape spectrum and half-peak breadth less than 90 nanometers, or the red to have linear emission peak spectrum in the case where blue light excites
The emission spectrum of fluorescent powder, this red fluorescence powder is a plurality of threadiness, and half-peak breadth only has several nanometers.
Narrow bandwidth red fluorescence powder described in fluorescent powder narrow bandwidth green emitting phosphor as described in two kinds and two kinds
It mixes, the emission peak peak wavelength range of narrow bandwidth green emitting phosphor described in two kinds is respectively 520~529nm and 530
~540nm, the emission peak peak wavelength range of narrow bandwidth red fluorescence powder described in two kinds be respectively 630~639nm and 640~
660nm.In two kinds of narrow bandwidth green emitting phosphors, the mass percent of the first narrow bandwidth green emitting phosphor (520~529nm)
For 0.5~99.5wt%, the mass percent of second of narrow bandwidth green emitting phosphor (530~540nm) is 0.5~
99.5wt%；In two kinds of narrow bandwidth red fluorescence powders, the quality hundred of the first narrow bandwidth red fluorescence powder (630~639nm)
Point than being 0.5~99.5wt%, the mass percent of second of narrow bandwidth red fluorescence powder (640~660nm) is 0.5~
99.5wt%；The first narrow bandwidth green emitting phosphor is used to adjust the emission peak of narrow bandwidth green emitting phosphor and blue LED die
Interval and colour rendering index between peak wavelength, second narrow bandwidth green emitting phosphor for adjust narrow bandwidth green emitting phosphor with
Interval and light emission luminance between narrow bandwidth red fluorescence powder emission peak peak wavelength；The first narrow bandwidth red fluorescence powder is used
In the colour rendering index and brightness that adjust white light, second narrow bandwidth red fluorescence powder for adjust narrow bandwidth green emitting phosphor with it is narrow
Interval and colour gamut between the emission peak peak wavelength of bandwidth red fluorescence powder, if the quality of the first narrow bandwidth red fluorescence powder
Percentage is bigger, then the brightness for the white light that the white LED light source issues is higher, if the quality of second of narrow bandwidth red fluorescence powder
Percentage is bigger, then the white LED light source issue white light the bigger two kinds of narrow bandwidth green emitting phosphors of colour gamut gross mass with
The mixing ratio of the gross mass of two kinds of narrow bandwidth red fluorescence powders is the colour temperature according to required by the white LED light source of required preparation
It is determined.
Narrow bandwidth red fluorescence powder described in fluorescent powder narrow bandwidth green emitting phosphor as described in one kind and one kind
It mixes, the emission peak peak wavelength range of the narrow bandwidth green emitting phosphor is 520~529nm, the narrow bandwidth
The emission peak peak wavelength range of red fluorescence powder is 640~660nm.The quality and narrow bandwidth of narrow bandwidth green emitting phosphor are red
The mixed proportion of the quality of fluorescent powder is that the colour temperature according to required by the white LED light source of required preparation is determined.
Narrow bandwidth red fluorescence powder described in fluorescent powder narrow bandwidth green emitting phosphor as described in one kind and two kinds
It mixes, the emission peak peak wavelength range of the narrow bandwidth green emitting phosphor is 520~529nm, narrow described in two kinds
The emission peak peak wavelength range of bandwidth red fluorescence powder is respectively 630~639nm and 640~660nm.It is red in two kinds of narrow bandwidths
In color fluorescent powder, the mass percent of the first narrow bandwidth red fluorescence powder (630~639nm) is 0.5~99.5wt%, second
The mass percent of kind narrow bandwidth red fluorescence powder (640~660nm) is 0.5~99.5wt%；A kind of narrow bandwidth green fluorescence
The mixed proportion of the quality of powder and the gross mass of two kinds of narrow bandwidth red fluorescence powders is the white LED light source institute according to required preparation
It is required that colour temperature be determined.
Narrow bandwidth red fluorescence powder described in fluorescent powder narrow bandwidth green emitting phosphor as described in two kinds and one kind
It mixes, the emission peak peak wavelength range of narrow bandwidth green emitting phosphor described in two kinds is respectively 520~529nm and 530
~540nm, the emission peak peak wavelength range of the narrow bandwidth red fluorescence powder are 640~660nm.It is green in two kinds of narrow bandwidths
In color fluorescent powder, the mass percent of the first narrow bandwidth green emitting phosphor (520~529nm) is 0.5~99.5wt%, second
The mass percent of kind narrow bandwidth green emitting phosphor (530~540nm) is 0.5~99.5wt%.Two kinds of narrow bandwidth green fluorescences
The mixed proportion of the gross mass of powder and a kind of quality of narrow bandwidth red fluorescence powder is the white LED light source institute according to required preparation
It is required that colour temperature be determined.
Narrow bandwidth red fluorescence powder described in fluorescent powder narrow bandwidth green emitting phosphor as described in two kinds and three kinds
It mixes, the emission peak peak wavelength range of narrow bandwidth green emitting phosphor described in two kinds is respectively 520~529nm and 530
~540nm, the emission peak peak wavelength range of narrow bandwidth red fluorescence powder described in two of them be respectively 630~639nm and
640~660nm, for the red fluorescence of band spectrum and half-peak breadth less than 90 nanometers with red emission peak under blue light excitation
The emission peak peak wavelength range of powder, narrow bandwidth red fluorescence powder described in remaining one kind is 630~639nm, to swash in blue light
Give the red fluorescence powder with linear emission peak spectrum.
The narrow bandwidth green emitting phosphor is the band-like transmitting that emission peak peak wavelength range is 520~529nm
(Ba,Sr)2SiO4: Eu or Ba3Si6O12N2: Eu or the narrow bandwidth green emitting phosphor are that emission peak peak wavelength range is
β-the Sialon:Eu of the band-like transmitting of 530~540nm；The narrow bandwidth red fluorescence powder is emission peak peak wavelength range
For (Ca, Sr) AlSiN of the band-like transmitting of 630~639nm3: Eu or (Ba, Sr, Ca)2Si5N8: Eu or the narrow bandwidth are red
Color fluorescent powder is the K for the linear transmitting that emission peak peak wavelength range is 630~639nm2SiF6: Mn4+Or K2TiF6: Mn4+, or
The narrow bandwidth red fluorescence powder is (Ca, the Sr) for the band-like transmitting that emission peak peak wavelength range is 640~660nm
AlSiN3: Eu.It is the blue-light LED chip of 450~454nm that the blue-light LED chip, which selects emission peak peak wavelength range, or
Selecting emission peak peak wavelength range is the blue-light LED chip of 455~460nm.The white LED light source can be only with a blue light
More blue-light LED chip serial or parallel connection encapsulation can also be used in LED chip, and the blue light that blue-light LED chip issues is by phosphor gel
White light emission is converted into come out.
The white LED light source further includes package support or substrate, and the blue-light LED chip is installed on the encapsulation branch
On frame or on substrate.Directly blue-light LED chip can also be installed on substrate or wiring board, then coating fluorescent powder glue, be formed
The various packagings such as LED filament or LED light strip.
Compared with the prior art, the advantages of the present invention are as follows:
1) using green emitting phosphor and red fluorescence powder as the main component of fluorescent powder, ensuring the white of white LED light source
Light spectrum have wave-length coverage the blue emission peak-to-peak value of 450~460nm, wave-length coverage 520~540nm green emission
Peak-to-peak value, wave-length coverage are issued white under the premise of the red emission peak-to-peak value of 610~640nm using the white LED light source
Light, which can make photographed object increase color appearance, can especially show Conventional white so as to enhance the vividness of photographed object
LED light source is difficult to the red color shown.
2) by selection blue-light LED chip, and the mass percent of green emitting phosphor and red fluorescence powder is adjusted, can obtained
100 or more are reached as high as to different-colour and the white LED light source of different colour rendering indexs, color gamut value, colour rendering index reaches as high as
96 or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of white LED light source of the invention；
Fig. 2 is the launching light spectrogram that colour temperature made of embodiment one is 5000K white LED light source；
Fig. 3 is the launching light spectrogram that colour temperature made of embodiment two is 3000K white LED light source；
Fig. 4 is the launching light spectrogram that colour temperature made of embodiment three is 6500K white LED light source.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
One kind proposed by the present invention can enhance the white LED light source of color displays, as shown in Figure 1 comprising package support
3, blue-light LED chip 1, blue-light LED chip 1 are installed on package support 3, and blue-light LED chip 1 is coated with phosphor gel 2,
Directly blue-light LED chip 1 can be installed on substrate or wiring board, then coating fluorescent powder glue 2, form LED filament or LED light
Various packagings, the phosphor gels 2 such as band are mixed by fluorescent powder and silica gel, and fluorescent powder is by a kind of narrow bandwidth green fluorescence
Powder or a variety of narrow bandwidth green emitting phosphors, a kind of narrow bandwidth red fluorescence powder or a variety of narrow bandwidth red fluorescence powders mix,
So that the white-light spectrum of the white LED light source has continuous spectrum, while having wave-length coverage in the blue light of 450~460nm
Emit peak-to-peak value, wave-length coverage is sent out in the feux rouges of the green emission peak-to-peak value of 520~540nm, wave-length coverage in 610~640nm
Penetrate peak-to-peak value, and blue light emission peak, green emission peak, red emission peak have a peak valley between any two, red emission peak it is opposite
Intensity at least more than green emission peak relative intensity 2/3.
When it is implemented, narrow bandwidth green emitting phosphor is the band spectrum with green emission peak and half under blue light excitation
Green emitting phosphor of the peak width less than 70 nanometers；Narrow bandwidth red fluorescence powder is band-like with red emission peak under blue light excitation
The red fluorescence powder of spectrum and half-peak breadth less than 90 nanometers, or to have the red of linear emission peak spectrum glimmering in the case where blue light excites
The emission spectrum of light powder, this red fluorescence powder is a plurality of threadiness, and half-peak breadth only has several nanometers.
Above-mentioned, fluorescent powder can be mixed by two kinds of narrow bandwidth green emitting phosphors and two kinds of narrow bandwidth red fluorescence powders,
The emission peak peak wavelength range of two kinds of narrow bandwidth green emitting phosphors be respectively 520~529nm (such as taking 525nm) and 530~
540nm (such as takes 535nm), the emission peak peak wavelength range of two kinds of narrow bandwidth red fluorescence powders be respectively 630~639nm (such as
Take 635nm or 630nm) and 640~660nm (such as taking 650nm).
It is above-mentioned, fluorescent powder can also by a kind of narrow bandwidth green emitting phosphor and a kind of narrow bandwidth red fluorescence powder mixing and
At the emission peak peak wavelength range of narrow bandwidth green emitting phosphor is 520~529nm, the emission peak of narrow bandwidth red fluorescence powder
Peak wavelength range is 640~660nm.
It is above-mentioned, fluorescent powder can also by a kind of narrow bandwidth green emitting phosphor and the mixing of two kinds of narrow bandwidth red fluorescence powders and
At the emission peak peak wavelength range of narrow bandwidth green emitting phosphor is 520~529nm, the hair of two kinds of narrow bandwidth red fluorescence powders
Penetrating peak-to-peak value wave-length coverage is respectively 630~639nm and 640~660nm.
It is above-mentioned, fluorescent powder can also by two kinds of narrow bandwidth green emitting phosphors and a kind of narrow bandwidth red fluorescence powder mixing and
At the emission peak peak wavelength range of two kinds of narrow bandwidth green emitting phosphors is respectively 520~529nm and 530~540nm, narrowband
The emission peak peak wavelength range of wide red fluorescence powder is 640~660nm.
It is above-mentioned, fluorescent powder can also by two kinds of narrow bandwidth green emitting phosphors and the mixing of three kinds of narrow bandwidth red fluorescence powders and
It is respectively 520~529nm and 530~540nm at, the emission peak peak wavelength range of two kinds of narrow bandwidth green emitting phosphors, wherein
The emission peak peak wavelength range of two kinds of narrow bandwidth red fluorescence powders is respectively 630~639nm and 640~660nm, in blue light
The red fluorescence powder of the lower band spectrum with red emission peak of excitation, a kind of remaining emission peak peak of narrow bandwidth red fluorescence powder
Value wave-length coverage is 630~639nm, to have the red fluorescence powder of linear emission peak spectrum under blue light excitation.
Above-mentioned, the half-peak breadth of the emission peak of narrow bandwidth green emitting phosphor is lower than 70nm, the transmitting of narrow bandwidth red fluorescence powder
The half-peak breadth at peak is lower than 90nm.
It is above-mentioned, narrow bandwidth green emitting phosphor be the band-like transmitting that emission peak peak wavelength range is 520~529nm (Ba,
Sr)2SiO4: Eu or Ba3Si6O12N2: it is 530~540nm that Eu or narrow bandwidth green emitting phosphor, which are emission peak peak wavelength range,
Band-like transmitting β-Sialon:Eu；Narrow bandwidth red fluorescence powder is the band that emission peak peak wavelength range is 630~639nm
(Ca, Sr) AlSiN of shape transmitting3: Eu or (Ba, Sr, Ca)2Si5N8: Eu or narrow bandwidth red fluorescence powder are transmitting peak-to-peak value wave
The K for the linear transmitting that long range is 630~639nm2SiF6: Mn4+Or K2TiF6: Mn4+Or narrow bandwidth red fluorescence powder is transmitting
Peak-to-peak value wave-length coverage is (Ca, Sr) AlSiN of the band-like transmitting of 640~660nm3: Eu.
Above-mentioned, it is the blue-light LED chip of 450~454nm, or choosing that blue-light LED chip, which selects emission peak peak wavelength range,
The blue-light LED chip for being 455~460nm with emission peak peak wavelength range.The white LED light source can be only with a blue light
More blue-light LED chip serial or parallel connection encapsulation can also be used in LED chip, and the blue light that blue-light LED chip issues is by phosphor gel
White light emission is converted into come out.
Embodiment one:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by two kinds of narrow bandwidths
Color fluorescent powder and two kinds of narrow bandwidth red fluorescence powders mix, the first narrow bandwidth green emitting phosphor is emission peak peak wavelength
For (Ba, the Sr) of 525nm2SiO4: Eu, second of narrow bandwidth green emitting phosphor are the β-that emission peak peak wavelength is 535nm
Sialon:Eu, the first narrow bandwidth red fluorescence powder are (Ca, Sr) AlSiN that emission peak peak wavelength is 635nm3: Eu, the
Two kinds of narrow bandwidth red fluorescence powders are the CaAlSiN that emission peak peak wavelength is 650nm3: Eu, the first narrow bandwidth green fluorescence
The ratio of the mass percent of powder and second of narrow bandwidth green emitting phosphor is 80wt%:20wt%, the first narrow bandwidth red is glimmering
The ratio of the mass percent of light powder and second of narrow bandwidth red fluorescence powder is 10wt%:90wt%, and two kinds of narrow bandwidth greens are glimmering
The half-peak breadth of the emission peak of light powder is below 70nm, and the half-peak breadth of the emission peak of two kinds of narrow bandwidth red fluorescence powders is below
90nm, it is the blue-light LED chip of 455nm that blue-light LED chip, which selects emission peak peak wavelength,.
Fig. 2 gives the launching light spectrogram that colour temperature made of the present embodiment is 5000K white LED light source.It can be with from Fig. 2
To find out, blue emission peak-to-peak value is located at 455nm, and green emitted peak-to-peak value is located at 530nm, and red emission peak-to-peak value is located at 620nm,
Blue emission peak, green emitted peak, red emission peak have peak valley between any two, and the relative intensity at red emission peak is green
The 91.6% of the emissive porwer of emission peak.
Embodiment two:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by two kinds of narrow bandwidths
Color fluorescent powder and two kinds of narrow bandwidth red fluorescence powders mix, the first narrow bandwidth green emitting phosphor is emission peak peak wavelength
For (Ba, the Sr) of 525nm2SiO4: Eu, second of narrow bandwidth green emitting phosphor are the β-that emission peak peak wavelength is 535nm
Sialon:Eu, the first narrow bandwidth red fluorescence powder are (Ca, Sr) AlSiN that emission peak peak wavelength is 635nm3: Eu, the
Two kinds of narrow bandwidth red fluorescence powders are the CaAlSiN that emission peak peak wavelength is 650nm3: Eu, the first narrow bandwidth green fluorescence
The ratio of the mass percent of powder and second of narrow bandwidth green emitting phosphor is 70wt%:30wt%, the first narrow bandwidth red is glimmering
The ratio of the mass percent of light powder and second of narrow bandwidth red fluorescence powder is 80wt%:20wt%, and two kinds of narrow bandwidth greens are glimmering
The half-peak breadth of the emission peak of light powder is below 70nm, and the half-peak breadth of the emission peak of two kinds of narrow bandwidth red fluorescence powders is below
90nm, it is the blue-light LED chip of 453nm that blue-light LED chip, which selects emission peak peak wavelength,.
Fig. 3 gives the launching light spectrogram that colour temperature made of the present embodiment is 3000K white LED light source.It can be with from Fig. 3
To find out, blue emission peak-to-peak value is located at 453nm, and green emitted peak-to-peak value is located at 540nm, and red emission peak-to-peak value is located at 626nm,
Blue emission peak, green emitted peak, red emission peak have peak valley between any two, and the relative intensity at red emission peak is green
The 141% of the emissive porwer of emission peak.
Embodiment three:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by two kinds of narrow bandwidths
Color fluorescent powder and two kinds of narrow bandwidth red fluorescence powders mix, the first narrow bandwidth green emitting phosphor is emission peak peak wavelength
For (Ba, the Sr) of 525nm2SiO4: Eu, second of narrow bandwidth green emitting phosphor are the β-that emission peak peak wavelength is 535nm
Sialon:Eu, the first narrow bandwidth red fluorescence powder are (Ca, Sr) AlSiN that emission peak peak wavelength is 635nm3: Eu, the
Two kinds of narrow bandwidth red fluorescence powders are the K that main reflection peak peak wavelength is 631nm2SiF6: Mn4+, the first narrow bandwidth green is glimmering
The ratio of the mass percent of light powder and second of narrow bandwidth green emitting phosphor is 90wt%:10wt%, the first narrow bandwidth is red
The ratio of the mass percent of fluorescent powder and second of narrow bandwidth red fluorescence powder is 50wt%:50wt%, two kinds of narrow bandwidth greens
The half-peak breadth of the emission peak of fluorescent powder is below 70nm, and the half-peak breadth of the emission peak of the first narrow bandwidth red fluorescence powder is lower than
90nm, it is the blue-light LED chip of 454nm that blue-light LED chip, which selects emission peak peak wavelength,.
Fig. 4 gives the launching light spectrogram that colour temperature made of the present embodiment is 6500K white LED light source.It can be with from Fig. 4
To find out, blue emission peak-to-peak value is located at 454nm, and green emitted peak-to-peak value is located at 530nm, and red emission peak-to-peak value is located at 631nm,
Blue emission peak, green emitted peak, red emission peak have peak valley between any two, and the relative intensity at red emission peak is green
The 94% of the emissive porwer of emission peak.
Example IV:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by two kinds of narrow bandwidths
Color fluorescent powder and three kinds of narrow bandwidth red fluorescence powders mix, the first narrow bandwidth green emitting phosphor is emission peak peak wavelength
For (Ba, the Sr) of 525nm2SiO4: Eu, second of narrow bandwidth green emitting phosphor are the β-that emission peak peak wavelength is 535nm
Sialon:Eu, the first narrow bandwidth red fluorescence powder are (Ca, Sr) AlSiN that emission peak peak wavelength is 635nm3: Eu, the
Two kinds of narrow bandwidth red fluorescence powders are the CaAlSiN that emission peak peak wavelength is 650nm3: Eu, the third narrow bandwidth red fluorescence
Powder is the K that main reflection peak peak wavelength is 631nm2SiF6: Mn4+, the first narrow bandwidth green emitting phosphor and second of narrow bandwidth
The ratio of the mass percent of green emitting phosphor is 90wt%:10wt%, first two narrow bandwidth red fluorescence powder and the third narrowband
The ratio of the mass percent of wide red fluorescence powder be 50wt%:50wt%, the first narrow bandwidth red fluorescence powder with it is second narrow
The ratio of the mass percent of bandwidth red fluorescence powder is 20wt%:80wt%, the emission peak of two kinds of narrow bandwidth green emitting phosphors
Half-peak breadth is below 70nm, and the half-peak breadth of the emission peak of first two narrow bandwidth red fluorescence powder is below 90nm, blue-light LED chip
Selecting emission peak peak wavelength is the blue-light LED chip of 454nm.
Embodiment five:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by a kind of narrow bandwidth
Color fluorescent powder and a kind of narrow bandwidth red fluorescence powder mix, and narrow bandwidth green emitting phosphor is that emission peak peak wavelength is
(Ba, the Sr) of 525nm2SiO4: Eu, narrow bandwidth red fluorescence powder are (Ca, Sr) AlSiN that emission peak peak wavelength is 650nm3:
The half-peak breadth of Eu, the emission peak of narrow bandwidth green emitting phosphor are lower than 70nm, the half-peak breadth of the emission peak of narrow bandwidth red fluorescence powder
Lower than 90nm, it is the blue-light LED chip of 456nm that blue-light LED chip, which selects emission peak peak wavelength,.
Embodiment six:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by a kind of narrow bandwidth
Color fluorescent powder and two kinds of narrow bandwidth red fluorescence powders form, and narrow bandwidth green emitting phosphor is that emission peak peak wavelength is 525nm's
(Ba,Sr)2SiO4: Eu, the first narrow bandwidth red fluorescence powder are (Ba, Sr, the Ca) that emission peak peak wavelength is 635nm2Si5N8: Eu, second of narrow bandwidth red fluorescence powder are the CaAlSiN that emission peak peak wavelength is 650nm3: Eu, the first is narrow
The ratio of the mass percent of bandwidth red fluorescence powder and second of narrow bandwidth red fluorescence powder is 30wt%:70wt%, narrow bandwidth
The half-peak breadth of the emission peak of green emitting phosphor is lower than 70nm, and the half-peak breadth of the emission peak of two kinds of narrow bandwidth red fluorescence powders is below
90nm, it is the blue-light LED chip of 454nm that blue-light LED chip, which selects emission peak peak wavelength,.
Embodiment seven:
One kind that the present embodiment proposes can enhance the white LED light source of color displays, and fluorescent powder is green by two kinds of narrow bandwidths
Color fluorescent powder and a kind of narrow bandwidth red fluorescence powder mix, the first narrow bandwidth green emitting phosphor is emission peak peak wavelength
For the Ba of 525nm3Si6O12N2: Eu, second of narrow bandwidth green emitting phosphor are the β-that emission peak peak wavelength is 535nm
Sialon:Eu, narrow bandwidth red fluorescence powder are the CaAlSiN that emission peak peak wavelength is 650nm3: Eu, the first narrow bandwidth are green
The ratio of the mass percent of color fluorescent powder and second of narrow bandwidth green emitting phosphor is 80wt%:20wt%, and two kinds of narrow bandwidths are green
The half-peak breadth of the emission peak of color fluorescent powder is below 70nm, and the half-peak breadth of the emission peak of narrow bandwidth red fluorescence powder is lower than 90nm,
It is the blue-light LED chip of 451nm that blue-light LED chip, which selects emission peak peak wavelength,.
Claims (10)
1. one kind can enhance the white LED light source of color displays, including blue-light LED chip, the blue-light LED chip outer cladding
There is phosphor gel, the phosphor gel is mixed by fluorescent powder and silica gel, it is characterised in that: the fluorescent powder is by one
Kind narrow bandwidth green emitting phosphor or a variety of narrow bandwidth green emitting phosphors, a kind of narrow bandwidth red fluorescence powder or a variety of narrow bandwidths are red
Fluorescent powder mixes, so that the white-light spectrum of the white LED light source has continuous spectrum, while there is wave-length coverage to exist
The blue emission peak-to-peak value of 450~460nm, wave-length coverage are in the green emission peak-to-peak value of 520~540nm, wave-length coverage 610
The red emission peak-to-peak value of~640nm, and there is peak valley between any two in blue light emission peak, green emission peak, red emission peak, it is red
The relative intensity of light emitting peak at least more than green emission peak relative intensity 2/3.
2. the white LED light source that one kind according to claim 1 can enhance color displays, it is characterised in that: described is narrow
Bandwidth green emitting phosphor is the green of band spectrum and half-peak breadth less than 70 nanometers with green emission peak under blue light excitation
Fluorescent powder；The narrow bandwidth red fluorescence powder is the band spectrum with red emission peak under blue light excitation and half-peak breadth is small
In 90 nanometers of red fluorescence powder, or the red fluorescence powder to have linear emission peak spectrum in the case where blue light excites.
3. the white LED light source that one kind according to claim 2 can enhance color displays, it is characterised in that: described is glimmering
Narrow bandwidth red fluorescence powder described in light powder narrow bandwidth green emitting phosphor as described in two kinds and two kinds mixes, described in two kinds
The emission peak peak wavelength range of narrow bandwidth green emitting phosphor be respectively 520~529nm and 530~540nm, described in two kinds
The emission peak peak wavelength range of narrow bandwidth red fluorescence powder is respectively 630~639nm and 640~660nm.
4. the white LED light source that one kind according to claim 2 can enhance color displays, it is characterised in that: described is glimmering
Narrow bandwidth red fluorescence powder described in light powder narrow bandwidth green emitting phosphor as described in one kind and one kind mixes, and described is narrow
The emission peak peak wavelength range of bandwidth green emitting phosphor is 520~529nm, the emission peak of the narrow bandwidth red fluorescence powder
Peak wavelength range is 640~660nm.
5. the white LED light source that one kind according to claim 2 can enhance color displays, it is characterised in that: described is glimmering
Narrow bandwidth red fluorescence powder described in light powder narrow bandwidth green emitting phosphor as described in one kind and two kinds mixes, and described is narrow
The emission peak peak wavelength range of bandwidth green emitting phosphor is 520~529nm, the hair of narrow bandwidth red fluorescence powder described in two kinds
Penetrating peak-to-peak value wave-length coverage is respectively 630~639nm and 640~660nm.
6. the white LED light source that one kind according to claim 2 can enhance color displays, it is characterised in that: described is glimmering
Narrow bandwidth red fluorescence powder described in light powder narrow bandwidth green emitting phosphor as described in two kinds and one kind mixes, described in two kinds
The emission peak peak wavelength range of narrow bandwidth green emitting phosphor be respectively 520~529nm and 530~540nm, the narrowband
The emission peak peak wavelength range of wide red fluorescence powder is 640~660nm.
7. the white LED light source that one kind according to claim 2 can enhance color displays, it is characterised in that: described is glimmering
Narrow bandwidth red fluorescence powder described in light powder narrow bandwidth green emitting phosphor as described in two kinds and three kinds mixes, described in two kinds
The emission peak peak wavelength range of narrow bandwidth green emitting phosphor be respectively 520~529nm and 530~540nm, two of them institute
The emission peak peak wavelength range for the narrow bandwidth red fluorescence powder stated is respectively 630~639nm and 640~660nm, in blue light
The lower red fluorescence powder of band spectrum and half-peak breadth less than 90 nanometers with red emission peak of excitation, it is narrow described in remaining one kind
The emission peak peak wavelength range of bandwidth red fluorescence powder is 630~639nm, to have linear emission peak light under blue light excitation
The red fluorescence powder of spectrum.
8. the white LED light source that one kind according to claim 3 to 7 can enhance color displays, it is characterised in that: described
Narrow bandwidth green emitting phosphor is (Ba, the Sr) for the band-like transmitting that emission peak peak wavelength range is 520~529nm2SiO4: Eu or
Ba3Si6O12N2: Eu or the narrow bandwidth green emitting phosphor are the band-like hair that emission peak peak wavelength range is 530~540nm
β-the Sialon:Eu penetrated；The narrow bandwidth red fluorescence powder is that emission peak peak wavelength range is the band-like of 630~639nm
(Ca, Sr) AlSiN of transmitting3: Eu or (Ba, Sr, Ca)2Si5N8: Eu or the narrow bandwidth red fluorescence powder are emission peak peak
It is worth the K for the linear transmitting that wave-length coverage is 630~639nm2SiF6: Mn4+Or K2TiF6: Mn4+Or the narrow bandwidth red is glimmering
Light powder is (Ca, the Sr) AlSiN for the band-like transmitting that emission peak peak wavelength range is 640~660nm3: Eu.
9. the white LED light source that one kind according to claim 8 can enhance color displays, it is characterised in that: the indigo plant
It is the blue-light LED chip of 450~454nm that light LED chip, which selects emission peak peak wavelength range, or selects emission peak peak wavelength
Range is the blue-light LED chip of 455~460nm.
10. the white LED light source that one kind according to claim 1 can enhance color displays, it is characterised in that: the white light
LED light source further includes package support or substrate, and the blue-light LED chip is installed on the package support or on substrate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265386A (en) * | 2019-06-06 | 2019-09-20 | 浙江阳光美加照明有限公司 | A kind of LED light of the color enhancement of adjustable color |
| CN110299440A (en) * | 2019-06-19 | 2019-10-01 | 江南大学 | A kind of preparation method of the white light LEDs of high-luminous-efficiency and high color rendering index (CRI) |
| US11294238B1 (en) | 2020-10-29 | 2022-04-05 | Lextar Electronics Corporation | Low blue light backlight module |
| US11652193B2 (en) | 2020-07-21 | 2023-05-16 | Lextar Electronics Corporation | Light-emitting diode device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788737A (en) * | 2010-01-26 | 2010-07-28 | 友达光电股份有限公司 | Display device using quantum dot fluorescent powder |
| CN107369742A (en) * | 2017-07-18 | 2017-11-21 | 中国计量大学 | A kind of high S/P values white light LEDs of high color rendering index (CRI) and its preparation method and application |
| CN107799508A (en) * | 2017-11-03 | 2018-03-13 | 江苏稳润光电科技有限公司 | A kind of LED filament and manufacture method for solving heat dissipation problem |
| CN107833961A (en) * | 2016-08-22 | 2018-03-23 | 深圳市欧弗德光电科技有限公司 | Backlight with OFED structures and its application containing organic green light embedded photoluminescent material and inorganic red light fluorescent powder composition |
| CN108365076A (en) * | 2018-04-08 | 2018-08-03 | 浙江阳光美加照明有限公司 | A kind of LED lights of specular removal, high color purity |
-
2018
- 2018-11-13 CN CN201811344042.1A patent/CN109599471A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788737A (en) * | 2010-01-26 | 2010-07-28 | 友达光电股份有限公司 | Display device using quantum dot fluorescent powder |
| CN107833961A (en) * | 2016-08-22 | 2018-03-23 | 深圳市欧弗德光电科技有限公司 | Backlight with OFED structures and its application containing organic green light embedded photoluminescent material and inorganic red light fluorescent powder composition |
| CN107369742A (en) * | 2017-07-18 | 2017-11-21 | 中国计量大学 | A kind of high S/P values white light LEDs of high color rendering index (CRI) and its preparation method and application |
| CN107799508A (en) * | 2017-11-03 | 2018-03-13 | 江苏稳润光电科技有限公司 | A kind of LED filament and manufacture method for solving heat dissipation problem |
| CN108365076A (en) * | 2018-04-08 | 2018-08-03 | 浙江阳光美加照明有限公司 | A kind of LED lights of specular removal, high color purity |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265386A (en) * | 2019-06-06 | 2019-09-20 | 浙江阳光美加照明有限公司 | A kind of LED light of the color enhancement of adjustable color |
| CN110299440A (en) * | 2019-06-19 | 2019-10-01 | 江南大学 | A kind of preparation method of the white light LEDs of high-luminous-efficiency and high color rendering index (CRI) |
| US11652193B2 (en) | 2020-07-21 | 2023-05-16 | Lextar Electronics Corporation | Light-emitting diode device |
| US11294238B1 (en) | 2020-10-29 | 2022-04-05 | Lextar Electronics Corporation | Low blue light backlight module |
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Application publication date: 20190409 |