CN101866992A - White light light-emitting diode - Google Patents
White light light-emitting diode Download PDFInfo
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- CN101866992A CN101866992A CN200910038664A CN200910038664A CN101866992A CN 101866992 A CN101866992 A CN 101866992A CN 200910038664 A CN200910038664 A CN 200910038664A CN 200910038664 A CN200910038664 A CN 200910038664A CN 101866992 A CN101866992 A CN 101866992A
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Abstract
The invention discloses a white light light-emitting diode which comprises a substrate, an ultraviolet light-emitting diode grain and a fluorescent powder layer, wherein the substrate comprises an anode and a cathode or a circuit; the ultraviolet light-emitting diode grain is arranged on the substrate, and emits ultraviolet with wavelength of 320-400nm; and the fluorescent powder layer is coated on the ultraviolet light-emitting diode grain, and is mixed by blue, yellow and red fluorescent powders and a transparent glue material, the blue fluorescent powder is excited by blue light with wavelength of 400-530nm, and the transparent glue material is permeated by visible light and ultraviolet.
Description
Technical field
The present invention relates to a kind of white light emitting diode, especially a kind of white light emitting diode that in phosphor powder layer, is mixed with blueness, yellow and red fluorescence powder.
Background technology
At present on the market in order to (the light emitting diode of the light-emitting diode in the light emitting module that sends white light, LED), it is little and can be used for the advantages such as illumination use of array encapsulation to have volume, when the LED that uses different colours does the matched combined of different colours, can send white light shades of colour in addition.
Generally so-called " white light " is often referred to a kind of mixed light of many colors, the being seen white light of human eye comprises that at least the coloured light of wavelength more than two kinds forms, for example: blue light adds the white light that sodium yellow can obtain two complementary wavelengths (complementary wavelength), can obtain the white light of three-wavelength after blue light, green light, red light are mixed.In daily life, no matter indoor or outdoors is when the needs lighting source, wish to obtain the light source irradiation of approximate sunlight invariably, therefore white light emitting diode is required to have similar sunlight for example spectrum, the color rendering (color rendering) and correlated colour temperature (correlated color temperature of D65 standard sources, CCT), to satisfy the daily life lighting demand.(color rendering index CRI) represents more whether can make the object that is shone show the realistic colour of object itself to a testing light source and solar source to color rendering to drill colour index.Under different lighting demands, chromaticity coordinates (chromaticity color coordinates), color rendering and colour temperature etc. are required neither same, completely different as family and factory, office to lighting requirement, family requires the warm white of low colour temperature as the osram lamp color, and the illumination of higher color temperature is pursued by office.In addition, in LCD, be used as the backlight (backlight) of light source, to the enough colour gamuts of light source requirements tool specifications such as (gamut).Therefore, design and produce out the light source of various requirement specifications, for present each side makes great efforts target.
White light emitting diode can be divided into according to its employed material: Organic Light Emitting Diode and inorganic light-emitting diode.The inorganic semiconductor white light source mainly contains following three kinds of modes at present:
One is to form the white-light emitting module with red bluish-green Tricolor LED crystal grain, have high-luminous-efficiency, high color rendering advantage, but simultaneously also because of the of heap of stone brilliant material difference of different colours crystal grain, the related voltage characteristic that makes is also different thereupon, makes that therefore this mode cost is higher, the control circuit design is complicated.In addition, three coloured light being mixed into white light also is difficult for reaching.
Two for a day inferior chemistry proposes to excite yellow fluorescent powder to produce white light with blue light-emitting diode, is existing market main flow mode.The optical cement that is mixed with gold-tinted fluorescent material is filled in periphery at blue LED chip, the wavelength of blue light that this blue LED chip sends is about 400～530nm, the light that utilizes blue LED chip to send excites gold-tinted fluorescent material to produce sodium yellow, there is the blue light of part proper proportion to penetrate out simultaneously, this part blue light cooperates the sodium yellow that fluorescent material sent, and can form the white light of blue yellow two complementary wavelengths that mix.
Yet, the white light emitting diode that this kind utilizes blue LED chip and gold-tinted phosphor combination to form, at least there is following shortcoming: one, because blue light accounts for the major part of luminescent spectrum, have the higher and uneven phenomenon of colour temperature, therefore, must improve the chance of blue light and the effect of gold-tinted fluorescent material, to reduce the intensity of blue light strength or raising gold-tinted.Two,, and then cause generation white light source color drift phenomenon because the blue light-emitting diode emission wavelength can change with temperature increase.Three, because of the red part intensity of its luminescent spectrum a little less than, when irradiating object, can't present redness fully, cause the relatively poor phenomenon of color rendering.Existing mode of ameliorating is to add red fluorescence powder with the not high problem of improvement color rendering, but color still can't solve with temperature drift phenomenon.
Another way evenly is mixed with a certain proportion of blueness, green, red fluorescence powder particles for exciting with ultraviolet light-emitting diodes in the transparent optical cement.This similar can obtain the white light of three-wavelength in the fluorescent lamp principle after exciting.The advantage of three wavelengh white light light-emitting diode is: do not have luminous uniformity shortcoming, no color with temperature drift phenomenon and color rendering height, but that shortcoming is a luminous efficiency is not high.For example people such as Y.Narukawa uses ultraviolet light-emitting diodes to excite the not white light manufacture method of homochromy fluorescent material, use ultraviolet light-emitting diodes excitated blue and the yellow fluorescent powder of wavelength 400nm when deciding electric current 20mA, can obtain white light, colour temperature is 5800K, and drilling colour index is 85.3.People such as T.Nishida excite red, blue, green three-color phosphor then can obtain to drill the light source of colour index between about 86 with the ultraviolet light-emitting diodes of wavelength 350nm, and chromaticity coordinates is the white light of (0.411～0.416,0.397～0.401).In order to improve color rendering, in people's such as S.Nayama research, use ultraviolet light-emitting diodes to excite red, blue, green, yellow four look fluorescent material near wavelength 375～380nm, it drills colour index can reach 94.2, and colour temperature is 5800K.In people's such as Y.Narukawa research, more propose to use ultraviolet light-emitting diodes to excite bluish-green, yellow and red trichromatism fluorescent material, produce when deciding electric current 20mA, drilling colour index is 97, R9 is 96, colour temperature is the white light LEDs of 5000K, because use ultraviolet light-emitting diodes excite not homochromy fluorescent material at electric current when 5mA is increased to 60mA, the color coordinate drift amount is compared when using blue-ray LED to excite yellow fluorescent powder little a lot.
At United States Patent (USP) the 6th, propose in 685,852 to use the fluorescent material of wavelength, be mixed into white light by 7 kinds of different emission spectrum of light source activation of 315nm～480nm, though its white light color rendering of making can will use 4 kinds of not homochromy fluorescent material could realize this target up to 95 at least.And in U.S. Patent Publication No. the 2006/0022582nd, propose, use black light or the visible light LED of 250nm～500nm to excite the fluorescent material of at least 3 kinds of different emission spectrum to be mixed into white light, employed fluorescent material is respectively green, orange and redness, when modulation fluorescent material concentration, also can obtain the light source of high color rendering, but its chromaticity coordinates belongs to warm white.In U.S. Patent Publication No. the 2007/0235751st, propose, use the purple LED of wavelength, excite 5 kinds of not homochromy fluorescent material, can obtain near the chromaticity coordinates of white point and to drill colour index be 97.4 as 405nm.In U.S. Patent Publication No. the 2007/0221938th, propose, use the LED of wavelength 400nm～405nm excite red, yellow, indigo plant is green or the fluorescent material of bluish-green emission spectrum, change the part by weight of fluorescent material, can obtain to drill the warm white of colour index between 90～99.More than the employed fluorescent material of these american documentation literatures excited by identical excitation source, the different color light that utilizes fluorescent material to launch is formed needed white-light spectrum.
Summary of the invention
The objective of the invention is to, a kind of novel white-light light-emitting diode is provided.
In order to solve the problems of the technologies described above, an embodiment of the invention provide a kind of white light emitting diode, and it comprises: a base material comprises a positive and negative electrode or a circuit; One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm; An and phosphor powder layer, coat on the ultraviolet light-emitting diodes crystal grain, phosphor powder layer is mixed by blue, yellow, red fluorescence powder and a transparent adhesive tape material, and yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
In order to solve the problems of the technologies described above, another embodiment of the invention provides a kind of white light emitting diode, it comprises: a base material comprises a positive and negative electrode or a circuit; One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm; One hyaline layer covers ultraviolet light-emitting diodes crystal grain, and hyaline layer is penetrated by visible light and ultraviolet light; And a phosphor powder layer, to coat on the hyaline layer, phosphor powder layer is mixed by blue, yellow a, red fluorescence powder and a transparent adhesive tape material, and yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
In order to solve the problems of the technologies described above, an execution mode more of the present invention provides a kind of white light emitting diode, and it comprises: a base material comprises a positive and negative electrode or a circuit; One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm; One hyaline layer covers ultraviolet light-emitting diodes crystal grain, and hyaline layer is penetrated by visible light and ultraviolet light; And some phosphor powder layers, coat on the hyaline layer, phosphor powder layer comprises blueness, yellow and red fluorescence bisque, blue, yellow and red fluorescence bisque is mixed by blue, yellow, red fluorescence powder and a transparent adhesive tape material respectively, yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
The present invention proposes to use red, blue, yellow three fluorescence powder particles and utilizes ultraviolet leds to excite and is mixed into white light.The excitation source that uses among the present invention is the ultraviolet light-emitting diodes by 320nm～400nm wavelength, utilize the fluorescent material of this light source activation emission wavelength for ruddiness and blue light, and use blue light to excite yellow fluorescent powder, therefore the generation of sodium yellow generates through secondary excitation, but not in the prior art through once exciting the gold-tinted of generation.Excite the remaining blue light of yellow fluorescent powder and utilize, to be mixed into required white-light spectrum, can obtain to drill colour index greater than 90 white light source according to manufacture method of the present invention in conjunction with gold-tinted and ruddiness.
White light emitting diode of the present invention is with the blueness that is mixed with proper proportion in the ultraviolet light chip excitated fluorescent powder glue-line, yellow and red fluorescence powder particles, and to reach white point chromaticity coordinates (0.33,0.33), its colour temperature is drilled colour index and is higher than 90 between 3000～8000K.
Description of drawings
In order to allow goal of the invention of the present invention, feature and advantage become apparent, now in conjunction with embodiment and accompanying drawing, the present invention is further elaborated, wherein:
Fig. 1 is the cross-sectional schematic of an execution mode of white light emitting diode of the present invention.
Fig. 2 is the cross-sectional schematic of another execution mode of white light emitting diode of the present invention.
Fig. 3 is the cross-sectional schematic of the another execution mode of white light emitting diode of the present invention.
Fig. 4 is the spectrogram of an execution mode of white light emitting diode of the present invention.Wherein:
10,20,30: white light emitting diode; 12,22,32: base material;
14,24,34: ultraviolet light-emitting diodes crystal grain; 16,28,38: phosphor powder layer;
16 ': blueness, yellow or red fluorescence powder; 18,28 ', 39 ', 40 ', 41 ': the transparent adhesive tape material;
26,36: hyaline layer; 39: blue phosphor layer;
40: the yellow fluorescence bisque; 41: the red fluorescence bisque.
Embodiment
See also Fig. 1, according to an embodiment of the invention, a kind of white light emitting diode 10 comprises a base material 12, a ultraviolet light-emitting diodes crystal grain 14 and a phosphor powder layer 16.Base material 12 comprises a positive and negative electrode (not shown) or a circuit (not shown), and ultraviolet light-emitting diodes crystal grain 14 is arranged on the base material 12.Phosphor powder layer 16 is coated on the ultraviolet light-emitting diodes crystal grain 14.Phosphor powder layer 16 comprises blueness, yellow and red fluorescence powder 16 ' and a transparent adhesive tape material 18, and yellow fluorescent powder can be cerium doped yttrium aluminum garnet (YAG) fluorescent material, cerium doping terbium aluminium garnet (TAG) fluorescent material or the europium positive silicic acid (BOS) that mixes.
Ultraviolet light-emitting diodes crystal grain 14 can be made of the III-V family optoelectronic semiconductor of gallium nitride, aluminum indium gallium nitride or aluminum gallium nitride, but ultraviolet light-emitting diodes crystal grain 14 emission wavelengths are between the ultraviolet light of 320～400nm, with blueness in the fluorescence excitation bisque 16 and red fluorescence powder.Yellow fluorescent powder is then excited by the blue light that blue colour fluorescent powder inspired, and blue light wavelength is roughly between 400～530nm.The residue blue light adds that with the gold-tinted that excites three kinds of different colours light of ruddiness are mixed into white light.
See also Fig. 2, according to another embodiment of the present invention, a kind of white light emitting diode 20 comprises a base material 22, a ultraviolet light-emitting diodes crystal grain 24, a hyaline layer 26, and a phosphor powder layer 28.Base material 22 comprises a positive and negative electrode (not shown) or a circuit (not shown).Ultraviolet light-emitting diodes crystal grain 24 is arranged on the base material 22.Hyaline layer 26 covers ultraviolet light-emitting diodes crystal grain 24.Phosphor powder layer 28 is coated on the hyaline layer 26.Phosphor powder layer 28 comprises blueness, yellow and red fluorescence powder 16 ' and transparent adhesive tape material 28 '.Yellow fluorescent powder can be cerium doped yttrium aluminum garnet fluorescent powder, terbium aluminium garnet fluorescent material or the europium positive silicic acid that mixes.
Ultraviolet light-emitting diodes crystal grain 24 can be made of the III-V family optoelectronic semiconductor of for example gallium nitride, aluminum indium gallium nitride or aluminum gallium nitride.But ultraviolet light-emitting diodes crystal grain 24 emission wavelengths are between the ultraviolet light of 320～400nm, with blueness in the fluorescence excitation bisque 28 and red fluorescence powder.Yellow fluorescent powder is then excited by the blue light that blue colour fluorescent powder inspired, and blue light wavelength is roughly between 400～530nm.The residue blue light adds that with the gold-tinted that excites three kinds of different colours light of ruddiness are mixed into white light.Hyaline layer 26 can be ultraviolet light and visible light penetrates, and its material can comprise epoxy resin or silica gel.
Phosphor powder layer 28 Smalt fluorescent material account for total fluorescent material percentage by weight between 15～50%, and yellow fluorescent powder accounts for total fluorescent material percentage by weight between 10～70%, and red fluorescence powder accounts for total fluorescent material percentage by weight between 15～40%.Transparent adhesive tape material 28 ' can be ultraviolet light and visible light penetrates, and its material can comprise epoxy resin or silica gel.
See also Fig. 3, according to an execution mode more of the present invention, a kind of white light emitting diode 30 comprises a base material 32, a ultraviolet light-emitting diodes crystal grain 34, a hyaline layer 36, and some phosphor powder layers 38.Base material 32 comprises a positive and negative electrode (not shown) or a circuit (not shown).Ultraviolet light-emitting diodes crystal grain 34 is arranged on the base material 32.Hyaline layer 36 covers ultraviolet light-emitting diodes crystal grain 34.Some phosphor powder layers 38 are coated on the hyaline layer 36.Some phosphor powder layers 38 comprise the transparent adhesive tape material 39 ', 40 ', 41 ' in blue phosphor layer 39, yellow fluorescence bisque 40 and red fluorescence bisque 41 and each layer.The percentage by weight of blue phosphor layer 39 Smalt fluorescent material is between 5～40%, and the percentage by weight of yellow fluorescent powder is between 10～50% in the yellow fluorescence bisque 40, and the percentage by weight of red fluorescence powder is between 5～40% in the red fluorescence bisque 41.Transparent adhesive tape material 39 ', 40 ', 41 ' can be ultraviolet light and visible light penetrates, and its material can comprise epoxy resin or silica gel.
In illustrated embodiment, some phosphor powder layers 38 from bottom to top are followed successively by blue phosphor layer 39, yellow fluorescence bisque 40 and red fluorescence bisque 41.But the present invention can comprise some phosphor powder layers of combined in any order not as limit, but yellow fluorescent powder must be above blue colour fluorescent powder, because the excitation source of yellow fluorescent powder is a blue light.Yellow fluorescent powder in the yellow fluorescence bisque 40 can be cerium doped yttrium aluminum garnet fluorescent powder, terbium aluminium garnet fluorescent material or the europium positive silicic acid that mixes.
Ultraviolet light-emitting diodes crystal grain 34 can be made of gallium nitride, aluminum indium gallium nitride or aluminum gallium nitride.But ultraviolet light-emitting diodes crystal grain 34 emission wavelengths are between the ultraviolet light of 320～400nm, with blueness in the fluorescence excitation bisque 38 and red fluorescence powder.Yellow fluorescent powder is then excited by the blue light that blue colour fluorescent powder inspired, and blue light wavelength is substantially between 400～530nm.The residue blue light adds that with the gold-tinted that excites three kinds of different colours light of ruddiness are mixed into white light.Hyaline layer 36 can be ultraviolet light and visible light penetrates, and its material can comprise epoxy resin or silica gel.
The present invention proposes to use red, blue, yellow three fluorescence powder particles and utilizes ultraviolet leds to excite and is mixed into white light.The excitation source that uses among the present invention is the ultraviolet light-emitting diodes by 320nm～400nm wavelength, utilize the fluorescent material of this light source activation emission wavelength for ruddiness and blue light, and use blue light to excite yellow fluorescent powder, therefore the generation of sodium yellow is to generate through secondary excitation, but not in the prior art through once exciting the gold-tinted of generation.Utilization excites the remaining blue light of yellow fluorescent powder, is mixed into required white-light spectrum in conjunction with gold-tinted and ruddiness, can obtain to drill colour index greater than 90 white light source according to manufacture method of the present invention.
White light emitting diode of the present invention is to be mixed with blueness, yellow and the red fluorescence powder of proper proportion in the ultraviolet light chip fluorescence excitation bisque, to reach white point chromaticity coordinates (0.33,0.33), its colour temperature is drilled colour index and is higher than 90 between 3000～8000K.
Embodiment
Embodiment 1
According to white light emitting diode structure shown in Figure 1, blue colour fluorescent powder accounts for total fluorescent material percentage by weight between 35～40%, yellow fluorescent powder accounts for total fluorescent material percentage by weight between 30～35%, and red fluorescence powder accounts for total fluorescent material percentage by weight between 35～25%.The white light LEDs of made has good luminescent characteristic under these conditions, and colour temperature is 6188K when deciding electric current 20mA, drills colour index up to 93.69, and chromaticity coordinates is drilled colour index and is higher than 90 near the chromaticity coordinates point of D65 standard sources.
Fig. 4 is the white light source spectrum that white light emitting diode of the present invention sent and the comparison of D65 standard sources spectrum.As can be seen from Figure, the spectrum change of the white light source that white light emitting diode of the present invention sent and the spectrum change of standard sources are very similar, so the white light source that susceptible of proof white light emitting diode of the present invention is sent has and the similar white light quality of standard sources, be that chromaticity coordinates is (0.33,0.33), colour temperature is lower than 6500K, drills colour index and is higher than 90.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the present invention just for convenience of description.
Claims (10)
1. white light emitting diode, it comprises:
One base material comprises a positive and negative electrode or a circuit;
One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm; And
One phosphor powder layer, coat on the ultraviolet light-emitting diodes crystal grain, phosphor powder layer is mixed by blue, yellow, red fluorescence powder and a transparent adhesive tape material, and yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
2. white light emitting diode according to claim 1 is characterized in that: the percentage by weight of described blue colour fluorescent powder in described blueness, yellow and red fluorescence powder is between 15～50%.
3. white light emitting diode according to claim 1 is characterized in that: the percentage by weight of described yellow fluorescent powder in described blueness, yellow and red fluorescence powder is between 10～70%.
4. white light emitting diode according to claim 1 is characterized in that: the percentage by weight of described red fluorescence powder in described blueness, yellow and red fluorescence powder is between 15～40%.
5. white light emitting diode, it comprises:
One base material comprises a positive and negative electrode or a circuit;
One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm;
One hyaline layer covers ultraviolet light-emitting diodes crystal grain, and hyaline layer is penetrated by visible light and ultraviolet light; And
One phosphor powder layer is coated on the hyaline layer, and phosphor powder layer is mixed by blue, yellow, red fluorescence powder and a transparent adhesive tape material, and yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
6. white light emitting diode according to claim 5 is characterized in that: the percentage by weight of described yellow fluorescent powder in described blueness, yellow and red fluorescence powder is between 10～70%.
7. white light emitting diode according to claim 5 is characterized in that: the percentage by weight of described red fluorescence powder in described blueness, yellow and red fluorescence powder is between 15～40%.
8. white light emitting diode, it comprises:
One base material comprises a positive and negative electrode or a circuit;
One ultraviolet light-emitting diodes crystal grain is arranged on the base material, and ultraviolet light-emitting diodes crystal grain emission wavelength is between the ultraviolet light of 320～400nm;
One hyaline layer covers ultraviolet light-emitting diodes crystal grain, and hyaline layer is penetrated by visible light and ultraviolet light; And
Some phosphor powder layers, coat on the hyaline layer, phosphor powder layer comprises blueness, yellow and red fluorescence bisque, blue, yellow and red fluorescence bisque is mixed by blue, yellow, red fluorescence powder and a transparent adhesive tape material respectively, yellow fluorescent powder is excited by the blue light of wavelength between 400～530nm, and the transparent adhesive tape material is penetrated by visible light and ultraviolet light.
9. white light emitting diode according to claim 8 is characterized in that: the percentage by weight of described yellow fluorescent powder in described yellow fluorescence bisque is between 10～50%.
10. white light emitting diode according to claim 8 is characterized in that: the percentage by weight of described red fluorescence powder in described red fluorescence bisque is between 5～40%.
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| CN200910038664A CN101866992A (en) | 2009-04-15 | 2009-04-15 | White light light-emitting diode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102569542A (en) * | 2010-12-30 | 2012-07-11 | 中山市世耀光电科技有限公司 | Packaging process for light emitting diode (LED) light source |
| CN104347783A (en) * | 2013-07-31 | 2015-02-11 | 晶元光电股份有限公司 | Luminous element and manufacturing method thereof |
| CN105449081A (en) * | 2014-09-29 | 2016-03-30 | 艾笛森光电股份有限公司 | Light emission module |
| CN107384372A (en) * | 2017-08-14 | 2017-11-24 | 苏州轻光材料科技有限公司 | A kind of LED fluorescent powder composition |
| CN107621724A (en) * | 2016-08-22 | 2018-01-23 | 深圳市欧弗德光电科技有限公司 | Backlight and application containing organic green light embedded photoluminescent material and the OFED structures of organic red light embedded photoluminescent material composition |
| CN107654864A (en) * | 2016-08-22 | 2018-02-02 | 深圳市欧弗德光电科技有限公司 | A kind of light source body with OFED structures and its application in illumination |
| CN109904300A (en) * | 2019-03-15 | 2019-06-18 | 索罗紫光(上海)科技有限公司 | A kind of vehicle lamp light source device and car light mould group |
| CN110098304A (en) * | 2019-04-29 | 2019-08-06 | 佛山市国星光电股份有限公司 | A kind of novel light-emitting lamp bead and lamps and lanterns |
| CN114940901A (en) * | 2022-07-05 | 2022-08-26 | 兰州大学 | Yellow composite fluorescent pigment and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102569542A (en) * | 2010-12-30 | 2012-07-11 | 中山市世耀光电科技有限公司 | Packaging process for light emitting diode (LED) light source |
| CN104347783A (en) * | 2013-07-31 | 2015-02-11 | 晶元光电股份有限公司 | Luminous element and manufacturing method thereof |
| CN104347783B (en) * | 2013-07-31 | 2018-10-12 | 晶元光电股份有限公司 | Light-emitting component and preparation method thereof |
| CN105449081A (en) * | 2014-09-29 | 2016-03-30 | 艾笛森光电股份有限公司 | Light emission module |
| CN107621724A (en) * | 2016-08-22 | 2018-01-23 | 深圳市欧弗德光电科技有限公司 | Backlight and application containing organic green light embedded photoluminescent material and the OFED structures of organic red light embedded photoluminescent material composition |
| CN107654864A (en) * | 2016-08-22 | 2018-02-02 | 深圳市欧弗德光电科技有限公司 | A kind of light source body with OFED structures and its application in illumination |
| CN107678207A (en) * | 2016-08-22 | 2018-02-09 | 深圳市欧弗德光电科技有限公司 | A kind of backlight with OFED structures and its application in full-color display |
| CN107883199A (en) * | 2016-08-22 | 2018-04-06 | 深圳市欧弗德光电科技有限公司 | The light source body of OFED structures containing organic green light embedded photoluminescent material and inorganic feux rouges and yellow fluorescent powder composition and application |
| CN107384372A (en) * | 2017-08-14 | 2017-11-24 | 苏州轻光材料科技有限公司 | A kind of LED fluorescent powder composition |
| CN109904300A (en) * | 2019-03-15 | 2019-06-18 | 索罗紫光(上海)科技有限公司 | A kind of vehicle lamp light source device and car light mould group |
| CN110098304A (en) * | 2019-04-29 | 2019-08-06 | 佛山市国星光电股份有限公司 | A kind of novel light-emitting lamp bead and lamps and lanterns |
| CN114940901A (en) * | 2022-07-05 | 2022-08-26 | 兰州大学 | Yellow composite fluorescent pigment and preparation method thereof |
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