WO2019061818A1 - Wavelength conversion device and light emitting device - Google Patents

Wavelength conversion device and light emitting device Download PDF

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Publication number
WO2019061818A1
WO2019061818A1 PCT/CN2017/114748 CN2017114748W WO2019061818A1 WO 2019061818 A1 WO2019061818 A1 WO 2019061818A1 CN 2017114748 W CN2017114748 W CN 2017114748W WO 2019061818 A1 WO2019061818 A1 WO 2019061818A1
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Prior art keywords
wavelength
layer
conversion device
light
wavelength conversion
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PCT/CN2017/114748
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French (fr)
Chinese (zh)
Inventor
陈雨叁
李乾
许颜正
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深圳光峰科技股份有限公司
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Publication of WO2019061818A1 publication Critical patent/WO2019061818A1/en

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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
    • 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
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements

Definitions

  • the present invention relates to the field of laser display technology and illumination, and more particularly to a wavelength conversion device in a high power laser application environment and a light emitting device including the same.
  • blue excitation light from a solid state light source such as a light emitting diode or a laser diode can excite different phosphors having an emission wavelength exceeding the peak wavelength of blue light to produce high brightness light having a corresponding wavelength.
  • a solid state light source such as a light emitting diode or a laser diode
  • red light due to the large Stokes shift of red light, the energy conversion efficiency is low, and most of the energy is converted into heat during the wavelength conversion process, so the application of the red phosphor in the high power environment is hindered and becomes Bottlenecks within the industry.
  • the proportion of red light determines the color effect of the display screen.
  • the optical power of the excitation light is also getting higher and higher, and the temperature of the red light segment is also rising, thereby further reducing the luminous efficiency of the red fluorescent material, and thus the low light emission of the red fluorescent material.
  • Efficiency significantly affects the color effect of the display.
  • the heat resistance of the material of the red light segment and the heat dissipation of the structure are relatively high.
  • improvement from the selection of properties such as heat resistance and heat conduction of the material and the design of the heat dissipation structure is the key to improving the light efficiency of the red light segment.
  • the red light is obtained mainly by using a yellow light plus a color correction film.
  • this method can meet the application requirements to a certain extent, most of the other wavelengths of light are filtered by the color correction film, leaving only the red light segment portion, and finally the filtered part of the energy is converted into heat, thereby It also affects the reliability and service life of the product. That is to say, the existing technical level in the field of laser display technology still cannot meet the current requirements for brightness and color and product performance, and therefore the light effect of red light has a certain room for improvement. In other words, the efficacy of red light needs to be further improved to meet people's needs.
  • the inventors of the present invention have intensively studied the collocation and process adjustment of materials based on the above prior art, and provided a wavelength conversion device of a novel structure and a light-emitting device including the same, in which The wavelength conversion device of the invention can further enhance the light effect of the monochromatic red light, and the reliability of the wavelength conversion device is also improved.
  • a wavelength conversion device comprising: a heat conductive substrate, a reflective film layer disposed on the heat conductive substrate, a light emitting layer disposed on the reflective film layer, and a bonding layer between the reflective film layer and the light emitting layer.
  • the bonding layer is composed of a binder doped with a first wavelength converting material, wherein the first wavelength converting material can emit a wavelength of 550-650 Red light in the nm range.
  • the light emitting layer includes a yellow light emitting material having an emission wavelength shorter than an emission wavelength of the adhesive layer.
  • the thermally conductive substrate may be one selected from the group consisting of aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, and alumina ceramic.
  • the reflective film layer comprises a reflective functional layer formed on a surface of the thermally conductive substrate.
  • the reflective functional layer may be an aluminum film or a silver film.
  • the binder in the bonding layer is a silica gel material.
  • the first wavelength converting material may comprise a nitride red phosphor or an orange phosphor of a sialon material.
  • the luminescent layer may be a yellow fluorescent ceramic material.
  • the ceramic material may be a yellow phosphor YAG: YAG Ce fluorescent ceramic or the like: Ce and Al composite phosphor 2 O 3 in the ceramic.
  • the luminescent layer may be a yellow fluorescent glass material.
  • the weight ratio of the binder in the bonding layer to the first wavelength converting material is 1:1 to 4:1.
  • the first wavelength converting material has a maximum particle diameter of not more than 10 ⁇ m.
  • the light-emitting layer has a transmittance of red light of 95%.
  • a light emitting device comprising the wavelength converting device as described above.
  • a bonding layer is formed on the surface thereof, and the adhesive layer serves as a thin fluorescent layer.
  • the bonding layer is prepared by mixing a red fluorescent material or an orange fluorescent material with a silica gel, and bonding the luminescent layer (yellow fluorescent ceramic or yellow fluorescent glass) to the surface thereof by utilizing the adhesive property of the bonding layer.
  • the excitation light is incident into the luminescent layer, the emitted light of the first wavelength is generated, and the emitted light of the first wavelength and the remaining excitation light continue to excite the red fluorescent material or the orange fluorescent material in the bonding layer, thereby emitting the emission of the second wavelength.
  • the reflective film layer reflects the generated residual excitation light, the first wavelength of the emitted light, and the second wavelength of the emitted light forward (toward the direction toward the light emitting layer) from the surface of the light emitting layer.
  • the proportion of long-wavelength red light in the entire wavelength conversion device is increased by mixing a small amount of red fluorescent material or orange fluorescent material in the bonding layer.
  • the bonding layer simultaneously functions to bond and emit long-wavelength red light
  • the function of the component is optimized, the structure of the device is simplified, and cost is saved.
  • the present invention allows the heat to be moved up and down by sandwiching the bonding layer between the fluorescent ceramic or the fluorescent glass and the underlying substrate coated with the reflective film layer.
  • the interface dissipates heat at the same time, so that a good heat dissipation effect can be obtained.
  • the adhesive layer is located between the reflective film layer and the light-emitting layer of the fluorescent ceramic, it can also function to protect the reflective film layer, thereby preventing the reflective film layer from being mechanically damaged by the fluorescent ceramic.
  • Figure 1 is a schematic illustration of a wavelength conversion device of a novel construction in accordance with the present invention.
  • Figure 2 is a schematic illustration of the internal structure of an illuminant ceramic in accordance with the present invention.
  • FIG. 3 is a flow chart of a method of fabricating a wavelength conversion device in accordance with the present invention.
  • the invention provides a novel structure of the wavelength conversion device 100, the specific structure of which is shown in FIG.
  • the wavelength conversion device 100 includes a heat conductive substrate 101, a reflective film layer 102 disposed on the heat conductive substrate 101, a light emitting layer 104 disposed on the reflective film layer 102, and an adhesive layer 103 between the reflective film layer 102 and the light emitting layer 104. .
  • the thermally conductive substrate 101 may be a substrate having good thermal conductivity commonly used in the art, such as an aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, and alumina ceramic, etc., which is used as a susceptor of the wavelength conversion device of the present invention.
  • the reflective film layer 102 may include a reflective functional layer plated on the thermally conductive substrate 101 that has been polished, and the reflective functional layer may be a highly reflective aluminum film, a silver film, or the like, which functions to reflect light.
  • the bonding layer 103 is prepared by coating a binder doped with a first wavelength converting material on the reflective film layer 102, wherein the binder may be a high thermal conductivity silica gel, and wherein the first wavelength converting material is red wavelength converted At least one of a material or an orange wavelength converting material.
  • the first wavelength converting material may be a nitride red phosphor or an orange phosphor of a sialon material, which is not limited herein and can be converted. Wavelength converting materials that emit red or orange light are within the scope of the present invention.
  • the chemical formula of the nitride red phosphor is: L 2-x M 5 N 8-z O z : xR, wherein L is one of Group II alkaline earth metal elements Ca, Sr, Ba; M is silicon; N is nitrogen Element; O is oxygen; R is one or more of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Eu, Mn; 0.001 ⁇ x ⁇ 0.5, 0 ⁇ z ⁇ 0.05; Its emission wavelength is 550-650 nm.
  • the chemical formula of the orange phosphor of the Theron material is: ⁇ -Ca (m/2-x) Eu x Si 12-mn Al m+n O n N 16-n , wherein Ca is a calcium element; Eu is a lanthanum element; Si It is a silicon element; Al is an aluminum element; O is an oxygen element; N is a nitrogen element; 0.8 ⁇ n ⁇ 1.5, 1.5 ⁇ m ⁇ 2.0, 0 ⁇ x ⁇ 1; and its luminescence wavelength is 580-603 nm. Since the bonding layer 103 is doped with a red or orange wavelength converting material, it can emit emitted light of a second wavelength having a wavelength in the range of 550-650 nm upon receiving excitation light having a corresponding wavelength.
  • the light-emitting layer 104 is bonded and fixed to the reflective film layer 102 by the above-mentioned adhesive layer 103.
  • the light-emitting layer 104 may be a transparent or translucent ceramic material such as a yellow fluorescent ceramic, and its light-emitting wavelength is shorter than the light-emitting wavelength of the wavelength-converting material in the adhesive layer 103. Therefore, upon receiving excitation light having a corresponding wavelength such as blue light, the light-emitting layer 104 emits emission light of a first wavelength whose wavelength is shorter than the wavelength of the emission light of the second wavelength.
  • the first wavelength converting material in the bonding layer 103 is also excited and emits light of the second wavelength, that is, red light or orange light.
  • the light-emitting layer 104 does not absorb light of a long wavelength (for example, red light having a wavelength of 580 to 680 nm), and the transmittance is about 95%. Therefore, the emitted light of the second wavelength generated in the adhesive layer 103 can be emitted substantially entirely from the light emitting layer 104.
  • the adhesive layer 103 is located between the reflective film layer 102 and the light-emitting layer 104 for bonding the two together, while being capable of emitting emitted light of a second wavelength.
  • the above-described wavelength conversion device 100 can increase the proportion of long-wavelength light in the entire wavelength conversion device by incorporating a red or orange wavelength conversion material in the adhesive layer 103, thereby improving the light efficiency of red light;
  • the film is sandwiched between the reflective film layer 102 and the light-emitting layer 104 to dissipate heat from the upper and lower interfaces at the same time, so that the heat dissipation effect is good; and the presence of the adhesive layer also avoids direct contact between the reflective film layer 102 and the light-emitting layer 104. Therefore, the reflective film layer can also be protected from mechanical damage of the fluorescent ceramic.
  • the light-emitting layer is a fluorescent ceramic
  • the light-emitting ceramic 200 shown in Fig. 2 is constructed. The principle of illumination of the present invention will be described in detail below with reference to FIG.
  • the illuminant ceramic 200 includes a heat conductive substrate 201, a reflective film layer 202 disposed on the heat conductive substrate 201, a fluorescent ceramic 204 having an emission wavelength shorter than a wavelength of a red light segment, and a reflective film layer 202 and a fluorescent ceramic 204.
  • the adhesive layer 203 is doped with a red or orange fluorescent material, wherein reference numeral 205 denotes red or orange fluorescent material particles incorporated into the adhesive layer 203.
  • the blue light having a wavelength of 400 nm to 480 nm excites the fluorescent ceramic 204 having a shorter wavelength than the red wavelength, and a part of the blue light participates in the excitation.
  • Fluorescent ceramic 204 emits a wavelength range of 492-580 Yellow or green light of nm (emitting light of the first wavelength), another small portion of blue light passes through the fluorescent ceramic 204 and enters the bonding layer 203 when it encounters a red or orange fluorescent material in the bonding layer 203 When the particles 205, the red or orange fluorescent material particles 205 are directly excited to emit at a wavelength of 580-680.
  • Red light in the nm range (emission of light at the second wavelength).
  • a part of the emitted light of the fluorescent ceramic 204 is reversely entered into the bonding layer 203, and when the red or orange fluorescent material particles 205 are encountered, the red or orange fluorescent material particles 205 are also excited to emit at a wavelength of 580-680 nm.
  • the red light in the range forms the emitted light of the second wavelength.
  • the reason why the first wavelength of the emitted light can also excite the red or orange fluorescent material particles 205 to emit red light is because the absorption spectrum of the red or orange fluorescent material particles 205 is broad, which covers the spectrum of the light emitted by the fluorescent ceramic 204.
  • a portion of the red or orange light generated by the bonding layer 203 directly enters the fluorescent ceramic 204, and transmits light through the fluorescent ceramic, and another portion enters the reflective film layer 202, and is reflected by the reflective film layer 202 to enter the fluorescent ceramic 204. Transmitted light.
  • the luminous efficiency of the fluorescent ceramic 204 is higher than that of the bonding layer 203, and most of the blue excitation light is used to excite the wavelength converting material in the fluorescent ceramic 204 and emit the first wavelength of the emitted light, that is, yellow.
  • Light or green light a small portion of the blue excitation light excites the wavelength converting material in the bonding layer 203 and emits a second wavelength of emitted light, ie, red light; and a portion of the emitted light of the first wavelength also excites the bonding layer
  • the wavelength converting material in 203 emits a second wavelength of emitted light, i.e., red light. In this way, the illuminant ceramic 200 can emit high-efficiency red light.
  • the fluorescent ceramic 204 does not absorb light of long-wavelength light (for example, red light 580-680 nm), and the transmittance is about 95%, so that the generated red light is basically All can be launched.
  • the luminescent layer of the present invention since the luminescent layer of the present invention has a shorter illuminating wavelength than the luminescent layer of the bonding layer and has a higher conversion efficiency, it generates less heat, which results in a second layer of the wavelength converting material layer or the bonding layer. The heat is more easily dissipated through it, thereby effectively reducing the temperature of the wavelength conversion device and improving the stability and reliability of the light-emitting device.
  • S1 processing of the substrate, smoothing and polishing the surface of the substrate with high thermal conductivity of aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, alumina ceramic, etc., then cleaning and drying the substrate .
  • S2 Production of a reflective film layer: A reflective film layer containing a reflective functional layer is plated on the surface of the thermally conductive substrate produced in S1 by vacuum evaporation or magnetron sputtering.
  • S5 assembly of fluorescent ceramics, the processed fluorescent ceramics in S4 are assembled on the bonding layer produced in S3 in the manner shown in FIG. 1, while the surface of the polished and polished surface is brought into contact with the bonding layer, and then Place it in a pressurized clamp and apply a certain amount of pressure to it.
  • the method for fabricating the wavelength conversion device of the novel structure according to the present invention can enhance the long-wavelength light in the entire wavelength conversion device by sandwiching the bonding layer doped with the red or orange wavelength converting material between the reflective film layer and the fluorescent ceramic.
  • the ratio of the red light is improved, and the bonding effect between the reflective film layer and the fluorescent ceramic can be achieved; since the bonding layer is sandwiched between the reflective film layer and the fluorescent ceramic, the upper and lower sides can be simultaneously moved up and down.
  • the two interfaces dissipate heat, so they have good heat dissipation effect; and the presence of the bonding layer also avoids direct contact between the reflective film layer and the fluorescent ceramic, so that the reflective film layer can be protected from mechanical damage of the fluorescent ceramic.
  • the emission wavelength of the fluorescent ceramic is shorter than the emission wavelength of the bonding layer, the conversion efficiency is higher, so that less heat is generated, which makes the viscosity The heat generated in the junction layer is more easily dissipated through it, thereby effectively reducing the temperature of the wavelength conversion device and improving the stability and reliability of the light-emitting device.
  • the invention also provides a lighting device comprising a wavelength conversion device as described above.
  • the light-emitting device of the invention improves the light effect of the red light, and has a good heat dissipation effect, thereby improving the stability and reliability of the device.
  • the illuminating device can be applied to a device using a laser display such as a projection system, so that the red light efficiency of the devices is improved, the heat generation is small, the life is long, and the performance is superior.

Abstract

A wavelength conversion device (100) and light emitting device. The wavelength conversion device (100) comprises: a thermally conductive substrate (101), a reflective film layer (102) provided on the thermally conductive substrate (101), a light emitting layer (104) provided on the reflective film layer (102), and an adhesion layer (103) provided between the reflective film layer (102) and the light emitting layer (104). The adhesion layer (103) is composed of an adhesive blended with a first wavelength conversion material, wherein the first wavelength conversion material can emit red light having a wavelength in a range of 550-650 nm. The light emitting layer (104) comprises a yellow light emitting material having a light emission wavelength shorter than that of the adhesion layer (103). The wavelength conversion device (100) further improves light emission efficiency of monochromatic red light, and has superior reliability.

Description

一种波长转换装置及发光装置Wavelength conversion device and light emitting device 技术领域Technical field
本发明涉及激光显示技术和照明领域，特别是涉及大功率激光应用环境下的波长转换装置和包含该波长转换装置的发光装置。The present invention relates to the field of laser display technology and illumination, and more particularly to a wavelength conversion device in a high power laser application environment and a light emitting device including the same.
背景技术Background technique
众所周知，如发光二极管或者激光二极管等固态光源发出的蓝色激发光能够激发发光波长超过蓝光峰值波长的不同荧光粉以产生高亮度的具有相应波长的光。然而，由于红光的斯托克斯位移很大，能量转换效率较低，且在波长转换过程中大部分能量转换为热，所以使得红色荧光粉在大功率环境下的应用受到阻碍，并且成为该行业内的瓶颈。It is well known that blue excitation light from a solid state light source such as a light emitting diode or a laser diode can excite different phosphors having an emission wavelength exceeding the peak wavelength of blue light to produce high brightness light having a corresponding wavelength. However, due to the large Stokes shift of red light, the energy conversion efficiency is low, and most of the energy is converted into heat during the wavelength conversion process, so the application of the red phosphor in the high power environment is hindered and becomes Bottlenecks within the industry.
技术问题technical problem
尤其是在激光荧光粉技术的投影显示领域，红光的占比决定着显示画面的色彩效果。随着人们对于亮度及色彩的要求不断提高，激发光的光功率也越来越高，红光段的温度也不断攀升，从而进一步降低了红色荧光材料的发光效率，因此红色荧光材料的低发光效率显著影响了显示画面的色彩效果。在此背景下，为了提升红色荧光材料的发光效率，对红光段的材料的耐热和结构的散热要求相对较高。在保证红光段应有的技术特征的情况下，从材料的耐热和导热等属性选择以及散热结构的设计方面出发进行改进，是提升红光段光效的关键。Especially in the field of projection display of laser phosphor technology, the proportion of red light determines the color effect of the display screen. As people's requirements for brightness and color continue to increase, the optical power of the excitation light is also getting higher and higher, and the temperature of the red light segment is also rising, thereby further reducing the luminous efficiency of the red fluorescent material, and thus the low light emission of the red fluorescent material. Efficiency significantly affects the color effect of the display. In this context, in order to improve the luminous efficiency of the red fluorescent material, the heat resistance of the material of the red light segment and the heat dissipation of the structure are relatively high. In the case of ensuring the technical characteristics of the red light segment, improvement from the selection of properties such as heat resistance and heat conduction of the material and the design of the heat dissipation structure is the key to improving the light efficiency of the red light segment.
在现有的激光荧光粉显示技术中，红光的获得主要采用黄光加修色片的方式。虽然这种方式在一定程度上也能满足应用要求，但是大部分的其他波段的光被修色片过滤掉，只留下红光段部分，最终被过滤的部分能量还是转换成了热，从而也会影响产品的可靠性和使用寿命。也就是说，在激光显示技术领域中现有的技术水平仍不能满足当前人们对于亮度与色彩以及产品性能的要求，因此红光的光效还有一定的提高空间。换句话说，红光的光效还需要进一步得到提高以满足人们的需求。In the existing laser phosphor display technology, the red light is obtained mainly by using a yellow light plus a color correction film. Although this method can meet the application requirements to a certain extent, most of the other wavelengths of light are filtered by the color correction film, leaving only the red light segment portion, and finally the filtered part of the energy is converted into heat, thereby It also affects the reliability and service life of the product. That is to say, the existing technical level in the field of laser display technology still cannot meet the current requirements for brightness and color and product performance, and therefore the light effect of red light has a certain room for improvement. In other words, the efficacy of red light needs to be further improved to meet people's needs.
 
技术解决方案Technical solution
技术问题technical problem
有鉴于此，本发明的发明人在上述现有技术的基础上，深入研究材料的搭配和工艺调整，提供了一种新型结构的波长转换装置和包含该波长转换装置的发光装置，其中通过本发明的波长转换装置可以进一步提升单色红光的光效，同时波长转换装置的可靠性也得到了提高。In view of the above, the inventors of the present invention have intensively studied the collocation and process adjustment of materials based on the above prior art, and provided a wavelength conversion device of a novel structure and a light-emitting device including the same, in which The wavelength conversion device of the invention can further enhance the light effect of the monochromatic red light, and the reliability of the wavelength conversion device is also improved.
技术方案Technical solutions
根据本发明的一个方面，提供了一种波长转换装置，所述波长转换装置包括：导热基板、设置在所述导热基板上的反射膜层、设置在所述反射膜层上的发光层以及位于所述反射膜层和所述发光层之间的粘结层。所述粘结层由掺有第一波长转换材料的粘结剂构成，其中所述第一波长转换材料能发射出波长在550-650 nm范围内的红光。所述发光层包含发光波长比所述粘结层的发光波长短的黄色发光材料。According to an aspect of the invention, there is provided a wavelength conversion device comprising: a heat conductive substrate, a reflective film layer disposed on the heat conductive substrate, a light emitting layer disposed on the reflective film layer, and a bonding layer between the reflective film layer and the light emitting layer. The bonding layer is composed of a binder doped with a first wavelength converting material, wherein the first wavelength converting material can emit a wavelength of 550-650 Red light in the nm range. The light emitting layer includes a yellow light emitting material having an emission wavelength shorter than an emission wavelength of the adhesive layer.
优选地，所述导热基板可以为选自铝合金、纯铜、氮化铝陶瓷、碳化硅陶瓷和氧化铝陶瓷中的一种。Preferably, the thermally conductive substrate may be one selected from the group consisting of aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, and alumina ceramic.
优选地，所述反射膜层包含形成在所述导热基板表面上的反射功能层。Preferably, the reflective film layer comprises a reflective functional layer formed on a surface of the thermally conductive substrate.
优选地，所述反射功能层可以为铝膜或银膜。Preferably, the reflective functional layer may be an aluminum film or a silver film.
优选地，所述粘结层中的粘结剂为硅胶材料。Preferably, the binder in the bonding layer is a silica gel material.
优选地，所述第一波长转换材料可以包含氮化物红色荧光粉或者塞隆材质的橙色荧光粉。Preferably, the first wavelength converting material may comprise a nitride red phosphor or an orange phosphor of a sialon material.
优选地，所述发光层可以为黄色荧光陶瓷材料。Preferably, the luminescent layer may be a yellow fluorescent ceramic material.
优选地，所述黄色荧光陶瓷材料可以为YAG:Ce类的荧光陶瓷或YAG:Ce和Al 2O 3的复相荧光陶瓷。 Preferably, the ceramic material may be a yellow phosphor YAG: YAG Ce fluorescent ceramic or the like: Ce and Al composite phosphor 2 O 3 in the ceramic.
优选地，所述发光层可以为黄色荧光玻璃材料。Preferably, the luminescent layer may be a yellow fluorescent glass material.
优选地，所述粘结层中的粘结剂与所述第一波长转换材料的重量比为1:1~4:1。Preferably, the weight ratio of the binder in the bonding layer to the first wavelength converting material is 1:1 to 4:1.
优选地，所述第一波长转换材料的最大粒径不超过10 μm。Preferably, the first wavelength converting material has a maximum particle diameter of not more than 10 μm.
优选地，所述发光层对红光的透过率达到95%。Preferably, the light-emitting layer has a transmittance of red light of 95%.
根据本发明的另一方面，提供了一种发光装置，所述发光装置包括如上所述的波长转换装置。According to another aspect of the present invention, there is provided a light emitting device comprising the wavelength converting device as described above.
有益效果Beneficial effect
有益效果Beneficial effect
如上所述，在本发明中，在一个导热基板的表面上抛光镀制包含有反射功能层的反射膜层后，再在其表面制作一层粘结层，该粘结层起到荧光薄层的作用，该粘结层采用硅胶混合红色荧光材料或橙色荧光材料来制备，利用该粘结层的粘结性能，将发光层(黄色荧光陶瓷或黄色荧光玻璃)粘结在其表面。当激发光入射到发光层中时，产生第一波长的发射光，第一波长的发射光和剩余激发光继续激发粘结层中的红色荧光材料或橙色荧光材料，从而发出第二波长的发射光，最后，反射膜层将所产生的剩余激发光、第一波长的发射光和第二波长发射光向前反射(向前指的是朝向发光层的方向)，使其从发光层的表面射出。该技术方案中，通过在粘结层中混入少量的红色荧光材料或橙色荧光材料提升了整个波长转换装置中长波长红光的占比。As described above, in the present invention, after the reflective film layer containing the reflective functional layer is polished on the surface of a thermally conductive substrate, a bonding layer is formed on the surface thereof, and the adhesive layer serves as a thin fluorescent layer. The bonding layer is prepared by mixing a red fluorescent material or an orange fluorescent material with a silica gel, and bonding the luminescent layer (yellow fluorescent ceramic or yellow fluorescent glass) to the surface thereof by utilizing the adhesive property of the bonding layer. When the excitation light is incident into the luminescent layer, the emitted light of the first wavelength is generated, and the emitted light of the first wavelength and the remaining excitation light continue to excite the red fluorescent material or the orange fluorescent material in the bonding layer, thereby emitting the emission of the second wavelength. Light, finally, the reflective film layer reflects the generated residual excitation light, the first wavelength of the emitted light, and the second wavelength of the emitted light forward (toward the direction toward the light emitting layer) from the surface of the light emitting layer. Shoot out. In this technical solution, the proportion of long-wavelength red light in the entire wavelength conversion device is increased by mixing a small amount of red fluorescent material or orange fluorescent material in the bonding layer.
另外，在本发明中，由于粘结层同时起到了粘结作用和发射长波长红光的作用，所以优化了部件的功能，简化了装置的结构并且节省了成本。由于红光的转化效率较低且其产热较大，本发明通过将粘结层夹在荧光陶瓷或荧光玻璃与下面的镀有反射膜层的基板中间而使得其中的热可以向上下两个界面同时散热，从而可以获得良好的散热效果。此外，由于粘结层位于反射膜层和荧光陶瓷的发光层之间，所以其还能起到保护反射膜层的作用，从而防止反射膜层受到荧光陶瓷的机械损伤。Further, in the present invention, since the bonding layer simultaneously functions to bond and emit long-wavelength red light, the function of the component is optimized, the structure of the device is simplified, and cost is saved. Since the conversion efficiency of red light is low and the heat generation is large, the present invention allows the heat to be moved up and down by sandwiching the bonding layer between the fluorescent ceramic or the fluorescent glass and the underlying substrate coated with the reflective film layer. The interface dissipates heat at the same time, so that a good heat dissipation effect can be obtained. Further, since the adhesive layer is located between the reflective film layer and the light-emitting layer of the fluorescent ceramic, it can also function to protect the reflective film layer, thereby preventing the reflective film layer from being mechanically damaged by the fluorescent ceramic.
 
附图说明DRAWINGS
附图表示本文所述的非限制性示例性实施例。本领域技术人员将要理解的是，附图中的部件不一定按比例绘制，而是用于重点说明本发明的原理。在附图中：The drawings represent non-limiting, exemplary embodiments described herein. It will be understood by those skilled in the art that <RTIgt; In the drawing:
图1是根据本发明的新型结构的波长转换装置的示意图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a wavelength conversion device of a novel construction in accordance with the present invention.
图2是根据本发明的发光体陶瓷的内部结构的示意图。Figure 2 is a schematic illustration of the internal structure of an illuminant ceramic in accordance with the present invention.
图3是根据本发明的波长转换装置的制作方法的流程图。3 is a flow chart of a method of fabricating a wavelength conversion device in accordance with the present invention.
附图标记列表List of reference signs
100：波长转换装置100: wavelength conversion device
101：导热基板101: thermally conductive substrate
102：反射膜层102: reflective film layer
103：粘结层103: bonding layer
104：发光层104: luminescent layer
200：发光体陶瓷200: Luminescent ceramics
201：导热基板201: thermally conductive substrate
202：反射膜层202: reflective film layer
203：粘结层203: bonding layer
204：荧光陶瓷204: fluorescent ceramics
205：红色或者橙色荧光材料颗粒205: red or orange fluorescent material particles
本发明的实施方式Embodiments of the invention
以下，参照附图更全面地说明本发明的一个或多个示例性实施例，在附图中，本领域技术人员能够容易地确定本发明的一个或多个示例性实施例。如本领域技术人员应认识到的，只要不脱离本发明的精神或范围，可以以各种不同的方式对所述示例性实施例进行修改，本发明的精神或范围不限于本文所述的示例性实施例。为了表现类似的特征，两幅以上附图中所示的相同结构、元件或部件由相似的附图标记表示。One or more exemplary embodiments of the present invention will be described more fully hereinafter. The exemplary embodiments may be modified in various different ways, and the spirit or scope of the present invention is not limited to the examples described herein, as those skilled in the art will recognize, without departing from the spirit or scope of the invention. Sexual embodiment. To present similar features, the same structures, elements or components shown in the two figures above are denoted by like reference numerals.
现在参照附图对本发明的实施例进行详细说明。Embodiments of the present invention will now be described in detail with reference to the drawings.
本发明提供了一种新型结构的波长转换装置100，其具体结构如图1所示。波长转换装置100包括：导热基板101、设置在导热基板101上的反射膜层102、设置在反射膜层102上的发光层104以及位于反射膜层102和发光层104之间的粘结层103。The invention provides a novel structure of the wavelength conversion device 100, the specific structure of which is shown in FIG. The wavelength conversion device 100 includes a heat conductive substrate 101, a reflective film layer 102 disposed on the heat conductive substrate 101, a light emitting layer 104 disposed on the reflective film layer 102, and an adhesive layer 103 between the reflective film layer 102 and the light emitting layer 104. .
导热基板101可以为本领域常用的具有良好导热性的基板，如铝合金、纯铜、氮化铝陶瓷、碳化硅陶瓷和氧化铝陶瓷等，其用作本发明的波长转换装置的基座。The thermally conductive substrate 101 may be a substrate having good thermal conductivity commonly used in the art, such as an aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, and alumina ceramic, etc., which is used as a susceptor of the wavelength conversion device of the present invention.
反射膜层102可以包含有在经过抛光处理的上述导热基板101上镀制的反射功能层，并且该反射功能层可以为高反射铝膜、银膜等，其作用是对光进行反射。The reflective film layer 102 may include a reflective functional layer plated on the thermally conductive substrate 101 that has been polished, and the reflective functional layer may be a highly reflective aluminum film, a silver film, or the like, which functions to reflect light.
粘结层103通过将掺有第一波长转换材料的粘结剂涂布于反射膜层102上来制备，其中该粘结剂可以采用高导热的硅胶，以及其中第一波长转换材料为红色波长转换材料或橙色波长转换材料中的至少一种，在一具体实施方式中，该第一波长转换材料可以是氮化物红色荧光粉或者塞隆材质的橙色荧光粉，此处不做限定，能通过转换发射出红色光或橙色光的波长转换材料都属于本发明的保护范围。氮化物红色荧光粉的化学式为：L 2-xM 5N 8-zO z:xR，其中L为Ⅱ族碱土金属元素Ca、Sr、Ba中的一种；M为硅元素；N为氮元素；O为氧元素；R为La、Ce、Pr、Nd、Sm、Gd、Tb、Dy、Ho、Eu、Mn中的一种或者几种；0.001 ≤ x ≤ 0.5，0 ≤ z ≤ 0.05；其发光波长为550-650 nm。塞隆材质的橙色荧光粉的化学式为：α-Ca (m/2-x)Eu xSi 12-m-nAl m+nO nN 16-n，其中Ca为钙元素；Eu为铕元素；Si为硅元素；Al为铝元素；O为氧元素；N为氮元素；0.8≤n≤1.5，1.5≤m≤2.0，0≤x≤1；其发光波长为580-603 nm。由于粘结层103中掺有红色或者橙色波长转换材料，所以其在接收到具有相应波长的激发光时可以发射出波长在550-650 nm范围内的第二波长的发射光。 The bonding layer 103 is prepared by coating a binder doped with a first wavelength converting material on the reflective film layer 102, wherein the binder may be a high thermal conductivity silica gel, and wherein the first wavelength converting material is red wavelength converted At least one of a material or an orange wavelength converting material. In one embodiment, the first wavelength converting material may be a nitride red phosphor or an orange phosphor of a sialon material, which is not limited herein and can be converted. Wavelength converting materials that emit red or orange light are within the scope of the present invention. The chemical formula of the nitride red phosphor is: L 2-x M 5 N 8-z O z : xR, wherein L is one of Group II alkaline earth metal elements Ca, Sr, Ba; M is silicon; N is nitrogen Element; O is oxygen; R is one or more of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Eu, Mn; 0.001 ≤ x ≤ 0.5, 0 ≤ z ≤ 0.05; Its emission wavelength is 550-650 nm. The chemical formula of the orange phosphor of the Theron material is: α-Ca (m/2-x) Eu x Si 12-mn Al m+n O n N 16-n , wherein Ca is a calcium element; Eu is a lanthanum element; Si It is a silicon element; Al is an aluminum element; O is an oxygen element; N is a nitrogen element; 0.8 ≤ n ≤ 1.5, 1.5 ≤ m ≤ 2.0, 0 ≤ x ≤ 1; and its luminescence wavelength is 580-603 nm. Since the bonding layer 103 is doped with a red or orange wavelength converting material, it can emit emitted light of a second wavelength having a wavelength in the range of 550-650 nm upon receiving excitation light having a corresponding wavelength.
发光层104通过上述粘结层103与反射膜层102粘结固定在一起。例如，发光层104可以为黄色荧光陶瓷等透明或半透明的陶瓷材料，其发光波长短于粘结层103中的波长转换材料的发光波长。因此，在接收到如蓝光等具有相应波长的激发光时，发光层104会发射出第一波长的发射光，其波长短于第二波长的发射光的波长。另外，当第一波长的发射光进入粘结层103中时，也会激发粘结层103中的第一波长转换材料并发射第二波长的发射光，即红光或橙光。此外，需要说明的是，发光层104对长波长的光(如：波长为580-680 nm的红光)不吸收，透过率为95%左右。因此，在粘结层103中产生的第二波长的发射光可以基本上全部从发光层104发射出去。The light-emitting layer 104 is bonded and fixed to the reflective film layer 102 by the above-mentioned adhesive layer 103. For example, the light-emitting layer 104 may be a transparent or translucent ceramic material such as a yellow fluorescent ceramic, and its light-emitting wavelength is shorter than the light-emitting wavelength of the wavelength-converting material in the adhesive layer 103. Therefore, upon receiving excitation light having a corresponding wavelength such as blue light, the light-emitting layer 104 emits emission light of a first wavelength whose wavelength is shorter than the wavelength of the emission light of the second wavelength. In addition, when the emitted light of the first wavelength enters the bonding layer 103, the first wavelength converting material in the bonding layer 103 is also excited and emits light of the second wavelength, that is, red light or orange light. Further, it should be noted that the light-emitting layer 104 does not absorb light of a long wavelength (for example, red light having a wavelength of 580 to 680 nm), and the transmittance is about 95%. Therefore, the emitted light of the second wavelength generated in the adhesive layer 103 can be emitted substantially entirely from the light emitting layer 104.
如上所述，粘结层103位于反射膜层102和发光层104之间，用于将两者粘结固定在一起，同时能够发射第二波长的发射光。As described above, the adhesive layer 103 is located between the reflective film layer 102 and the light-emitting layer 104 for bonding the two together, while being capable of emitting emitted light of a second wavelength.
根据本发明的上述波长转换装置100通过在粘结层103中掺入红色或者橙色波长转换材料可以提升整个波长转换装置中长波长光的占比，提高了红光的光效；由于粘结层夹在反射膜层102和发光层104之间而可以同时向上下两个界面散热，所以具有良好的散热效果；并且粘结层的存在还避免了反射膜层102和发光层104的直接接触，所以还能保护反射膜层免受荧光陶瓷的机械损伤。The above-described wavelength conversion device 100 according to the present invention can increase the proportion of long-wavelength light in the entire wavelength conversion device by incorporating a red or orange wavelength conversion material in the adhesive layer 103, thereby improving the light efficiency of red light; The film is sandwiched between the reflective film layer 102 and the light-emitting layer 104 to dissipate heat from the upper and lower interfaces at the same time, so that the heat dissipation effect is good; and the presence of the adhesive layer also avoids direct contact between the reflective film layer 102 and the light-emitting layer 104. Therefore, the reflective film layer can also be protected from mechanical damage of the fluorescent ceramic.
当发光层为荧光陶瓷时，构成了如图2所示的发光体陶瓷200。下面结合图2对本发明的发光原理进行详细说明。When the light-emitting layer is a fluorescent ceramic, the light-emitting ceramic 200 shown in Fig. 2 is constructed. The principle of illumination of the present invention will be described in detail below with reference to FIG.
如图2所示，发光体陶瓷200包括导热基板201、设置在导热基板201上的反射膜层202、发光波长短于红光段波长的荧光陶瓷204以及位于反射膜层202和荧光陶瓷204之间的掺有红色或者橙色荧光材料的粘结层203，其中附图标记205表示掺入粘结层203中的红色或者橙色荧光材料颗粒。As shown in FIG. 2, the illuminant ceramic 200 includes a heat conductive substrate 201, a reflective film layer 202 disposed on the heat conductive substrate 201, a fluorescent ceramic 204 having an emission wavelength shorter than a wavelength of a red light segment, and a reflective film layer 202 and a fluorescent ceramic 204. The adhesive layer 203 is doped with a red or orange fluorescent material, wherein reference numeral 205 denotes red or orange fluorescent material particles incorporated into the adhesive layer 203.
进一步对该发光体陶瓷200的发光过程进行说明，如图2所示，波长为400 nm-480 nm的蓝色光激发发光波长短于红光段波长的荧光陶瓷204，一部分蓝色光参与激发，使得荧光陶瓷204发射出波长范围为492-580 nm的黄色光或者绿色光(第一波长的发射光)，另一小部分蓝色光透过荧光陶瓷204并进入粘结层203中，当其遇到粘结层203中的红色或者橙色荧光材料颗粒205时，直接激发红色或者橙色荧光材料颗粒205发射出波长在580-680 nm范围内的红色光(第二波长的发射光)。另一方面，荧光陶瓷204的发射光一部分反向进入粘结层203中，当遇到红色或者橙色荧光材料颗粒205时，也会激发红色或者橙色荧光材料颗粒205发射出波长在580-680 nm范围内的红色光，形成第二波长的发射光。第一波长的发射光也能激发红色或者橙色荧光材料颗粒205发射出红色光的主要原因是由于红色或者橙色荧光材料颗粒205的吸收光谱较宽，其覆盖了荧光陶瓷204出射光的光谱。粘结层203所产生的红色光或橙色光的一部分直接进入荧光陶瓷204中，并穿过该荧光陶瓷透射出光，另一部分进入反射膜层202中，经反射膜层202反射后进入荧光陶瓷204透射出光。The illuminating process of the illuminant ceramic 200 is further described. As shown in FIG. 2, the blue light having a wavelength of 400 nm to 480 nm excites the fluorescent ceramic 204 having a shorter wavelength than the red wavelength, and a part of the blue light participates in the excitation. Fluorescent ceramic 204 emits a wavelength range of 492-580 Yellow or green light of nm (emitting light of the first wavelength), another small portion of blue light passes through the fluorescent ceramic 204 and enters the bonding layer 203 when it encounters a red or orange fluorescent material in the bonding layer 203 When the particles 205, the red or orange fluorescent material particles 205 are directly excited to emit at a wavelength of 580-680. Red light in the nm range (emission of light at the second wavelength). On the other hand, a part of the emitted light of the fluorescent ceramic 204 is reversely entered into the bonding layer 203, and when the red or orange fluorescent material particles 205 are encountered, the red or orange fluorescent material particles 205 are also excited to emit at a wavelength of 580-680 nm. The red light in the range forms the emitted light of the second wavelength. The reason why the first wavelength of the emitted light can also excite the red or orange fluorescent material particles 205 to emit red light is because the absorption spectrum of the red or orange fluorescent material particles 205 is broad, which covers the spectrum of the light emitted by the fluorescent ceramic 204. A portion of the red or orange light generated by the bonding layer 203 directly enters the fluorescent ceramic 204, and transmits light through the fluorescent ceramic, and another portion enters the reflective film layer 202, and is reflected by the reflective film layer 202 to enter the fluorescent ceramic 204. Transmitted light.
需要指出的是，荧光陶瓷204的发光效率高于粘结层203的发光效率，蓝色激发光的大部分用于激发荧光陶瓷204中的波长转换材料并发射第一波长的发射光，即黄色光或绿色光；蓝色激发光的小部分激发粘结层203中的波长转换材料并发射第二波长的发射光，即红色光；同时第一波长的发射光的一部分也会激发粘结层203中的波长转换材料并发射第二波长的发射光，即红色光。如此，发光体陶瓷200便可以发射出高效红光。同时，由于大部分蓝色光参与激发发光效率高的黄色光或绿色光，少部分蓝色光参与激发发光效率低的红色光，并且部分黄色光或绿色光参与激发红光，所以减少了由于红光发光效率低而导致的高热量。需要指出的是，本发明的另一个关键是荧光陶瓷204对长波长的光(如：红光580-680 nm)的光不吸收，透过率为95%左右，使得产生的红色光基本上全部都能发射出去。It should be noted that the luminous efficiency of the fluorescent ceramic 204 is higher than that of the bonding layer 203, and most of the blue excitation light is used to excite the wavelength converting material in the fluorescent ceramic 204 and emit the first wavelength of the emitted light, that is, yellow. Light or green light; a small portion of the blue excitation light excites the wavelength converting material in the bonding layer 203 and emits a second wavelength of emitted light, ie, red light; and a portion of the emitted light of the first wavelength also excites the bonding layer The wavelength converting material in 203 emits a second wavelength of emitted light, i.e., red light. In this way, the illuminant ceramic 200 can emit high-efficiency red light. At the same time, since most of the blue light is involved in exciting yellow light or green light with high luminous efficiency, a small amount of blue light participates in exciting red light with low luminous efficiency, and part of yellow light or green light participates in exciting red light, so red light is reduced. High heat caused by low luminous efficiency. It should be noted that another key point of the present invention is that the fluorescent ceramic 204 does not absorb light of long-wavelength light (for example, red light 580-680 nm), and the transmittance is about 95%, so that the generated red light is basically All can be launched.
另外，由于本发明中的发光层的发光波长比粘结层的发光波长要短，转换效率较高，所以其产生的热量较少，这使得第二层波长转换材料层或者粘结层中产生的热量更容易通过其散发出去，从而能够有效降低波长转换装置的温度，提高发光装置的稳定性和可靠性。In addition, since the luminescent layer of the present invention has a shorter illuminating wavelength than the luminescent layer of the bonding layer and has a higher conversion efficiency, it generates less heat, which results in a second layer of the wavelength converting material layer or the bonding layer. The heat is more easily dissipated through it, thereby effectively reducing the temperature of the wavelength conversion device and improving the stability and reliability of the light-emitting device.
下面，为了更方便理解本发明的结构，对本发明的新型结构的波长转换装置的制作方法进行详细说明，其流程图如图3所示，该方法可以按以下步骤来进行。Hereinafter, in order to more easily understand the structure of the present invention, a method of fabricating the wavelength conversion device of the novel structure of the present invention will be described in detail, and a flowchart thereof is shown in FIG. 3, and the method can be carried out in the following steps.
S1：基板的处理，对具有高导热性的铝合金、纯铜、氮化铝陶瓷、碳化硅陶瓷、氧化铝陶瓷等基板的表面进行磨平和抛光处理，然后对其进行清洗并使其烘干。S1: processing of the substrate, smoothing and polishing the surface of the substrate with high thermal conductivity of aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, alumina ceramic, etc., then cleaning and drying the substrate .
S2：反射膜层的制作，采用真空蒸镀或者磁控溅射方法在S1中制作的导热基板的表面上镀制包含有反射功能层的反射膜层。S2: Production of a reflective film layer: A reflective film layer containing a reflective functional layer is plated on the surface of the thermally conductive substrate produced in S1 by vacuum evaporation or magnetron sputtering.
S3：粘结层的制作，将发光波长为580 nm以上的波长转换粉体材料与粘结胶水按照：粉/胶=1:1~4:1的重量比混合均匀，在S2中制作的反射膜层上按照待粘结区域的形状进行涂覆；其中要求荧光粉的最大粒径不能超过10 μm，以保证较低的热阻。涂覆方式包括丝网印刷、刮涂、旋涂和喷涂等。S3: The production of the bonding layer, the wavelength conversion powder material having an emission wavelength of 580 nm or more and the bonding glue are uniformly mixed according to the weight ratio of powder/gel = 1:1 to 4:1, and the reflection made in S2 The film layer is coated according to the shape of the area to be bonded; wherein the maximum particle diameter of the phosphor is required to be less than 10 μm to ensure a low thermal resistance. Coating methods include screen printing, blade coating, spin coating, and spray coating.
S4：荧光陶瓷的处理，对YAG:Ce类的荧光陶瓷或YAG:Ce和Al 2O 3的复相荧光陶瓷等荧光陶瓷进行单面研磨抛光处理。 S4: Treatment of fluorescent ceramics, single-side grinding and polishing treatment of fluorescent ceramics such as YAG:Ce type fluorescent ceramics or YAG:Ce and Al 2 O 3 complex fluorescent ceramics.
S5：荧光陶瓷的组装，将S4中经过处理的荧光陶瓷按照图1所示的方式组装在S3中制作的粘结层上，同时使得其经过研磨抛光的表面与粘结层接触，然后将其放入加压的夹具中，对其施加一定的压力。S5: assembly of fluorescent ceramics, the processed fluorescent ceramics in S4 are assembled on the bonding layer produced in S3 in the manner shown in FIG. 1, while the surface of the polished and polished surface is brought into contact with the bonding layer, and then Place it in a pressurized clamp and apply a certain amount of pressure to it.
S6：热处理，将上述半成品和整个夹具一起放入真空烘箱中，对其进行热固化处理，热固化温度为160°C左右。S6: heat treatment, the above semi-finished product and the entire jig are placed together in a vacuum oven, and subjected to heat curing treatment, and the heat curing temperature is about 160 °C.
如此，完成了整个制作过程。In this way, the entire production process is completed.
根据本发明的新型结构的波长转换装置的制作方法通过将掺有红色或者橙色波长转换材料的粘结层夹在反射膜层和荧光陶瓷之间，既可以提升整个波长转换装置中长波长光的占比，从而提高红光的光效，又可以起到将反射膜层和荧光陶瓷粘结在一起的粘结作用；由于粘结层夹在反射膜层和荧光陶瓷之间而可以同时向上下两个界面散热，所以具有良好的散热效果；并且粘结层的存在还避免了反射膜层和荧光陶瓷的直接接触，所以还能保护反射膜层免受荧光陶瓷的机械损伤。The method for fabricating the wavelength conversion device of the novel structure according to the present invention can enhance the long-wavelength light in the entire wavelength conversion device by sandwiching the bonding layer doped with the red or orange wavelength converting material between the reflective film layer and the fluorescent ceramic. The ratio of the red light is improved, and the bonding effect between the reflective film layer and the fluorescent ceramic can be achieved; since the bonding layer is sandwiched between the reflective film layer and the fluorescent ceramic, the upper and lower sides can be simultaneously moved up and down. The two interfaces dissipate heat, so they have good heat dissipation effect; and the presence of the bonding layer also avoids direct contact between the reflective film layer and the fluorescent ceramic, so that the reflective film layer can be protected from mechanical damage of the fluorescent ceramic.
另外，在根据本发明的新型结构的波长转换装置的制作方法中，由于荧光陶瓷的发光波长比粘结层的发光波长要短，转换效率较高，所以其产生的热量较少，这使得粘结层中产生的热量更容易通过其散发出去，从而能够有效降低波长转换装置的温度，提高发光装置的稳定性和可靠性。In addition, in the method of fabricating the wavelength conversion device of the novel structure according to the present invention, since the emission wavelength of the fluorescent ceramic is shorter than the emission wavelength of the bonding layer, the conversion efficiency is higher, so that less heat is generated, which makes the viscosity The heat generated in the junction layer is more easily dissipated through it, thereby effectively reducing the temperature of the wavelength conversion device and improving the stability and reliability of the light-emitting device.
最后，本发明还提供了一种发光装置，该发光装置包括如上所述的波长转换装置。本发明的发光装置提高了红光的光效，并且具有良好的散热效果，提高了装置的稳定性和可靠性。在实际应用中，该发光装置可应用于投影系统等利用激光显示的设备，使得这些设备的红光光效得到提高，并且产热少，寿命长，性能较优。Finally, the invention also provides a lighting device comprising a wavelength conversion device as described above. The light-emitting device of the invention improves the light effect of the red light, and has a good heat dissipation effect, thereby improving the stability and reliability of the device. In practical applications, the illuminating device can be applied to a device using a laser display such as a projection system, so that the red light efficiency of the devices is improved, the heat generation is small, the life is long, and the performance is superior.
虽然具体示出和说明了本发明构思的示例性实施例，但是本领域普通技术人员将会理解，在不脱离所附权利要求书的精神和范围的情况下，可以在其中产生形式和细节上的改变。Although the exemplary embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art Change.

Claims (13)

  1. 一种波长转换装置，所述波长转换装置包括：导热基板、设置在所述导热基板上的反射膜层、设置在所述反射膜层上的发光层以及位于所述反射膜层和所述发光层之间的粘结层，其特征在于，A wavelength conversion device comprising: a heat conductive substrate, a reflective film layer disposed on the heat conductive substrate, a light emitting layer disposed on the reflective film layer, and the reflective film layer and the light emitting layer a bonding layer between the layers, characterized in that
    所述粘结层由掺有第一波长转换材料的粘结剂构成，其中所述第一波长转换材料能发射出波长在550-650 nm范围内的红光；以及The bonding layer is composed of a binder doped with a first wavelength converting material, wherein the first wavelength converting material is capable of emitting red light having a wavelength in the range of 550-650 nm;
    所述发光层包含发光波长比所述粘结层的发光波长短的黄色发光材料。The light emitting layer includes a yellow light emitting material having an emission wavelength shorter than an emission wavelength of the adhesive layer.
  2. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述导热基板为选自铝合金、纯铜、氮化铝陶瓷、碳化硅陶瓷和氧化铝陶瓷中的一种。The thermally conductive substrate is one selected from the group consisting of aluminum alloy, pure copper, aluminum nitride ceramic, silicon carbide ceramic, and alumina ceramic.
  3. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述反射膜层包含形成在所述导热基板表面上的反射功能层。The reflective film layer includes a reflective functional layer formed on a surface of the thermally conductive substrate.
  4. 如权利要求3所述的波长转换装置，其特征在于，The wavelength conversion device according to claim 3, wherein
    所述反射功能层为铝膜或银膜。The reflective functional layer is an aluminum film or a silver film.
  5. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述粘结层中的粘结剂为硅胶材料。The binder in the bonding layer is a silica gel material.
  6. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述第一波长转换材料包含氮化物红色荧光粉或者塞隆材质的橙色荧光粉。The first wavelength converting material comprises a nitride red phosphor or an orange phosphor of a sialon material.
  7. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述发光层为黄色荧光陶瓷材料。The luminescent layer is a yellow fluorescent ceramic material.
  8. 如权利要求7所述的波长转换装置，其特征在于，The wavelength conversion device according to claim 7, wherein
    所述黄色荧光陶瓷材料为YAG:Ce类的荧光陶瓷或YAG:Ce和Al 2O 3的复相荧光陶瓷。 The yellow fluorescent ceramic material is a YAG:Ce type fluorescent ceramic or a YAG:Ce and Al 2 O 3 complex fluorescent ceramic.
     
  9. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述发光层为黄色荧光玻璃材料。The luminescent layer is a yellow fluorescent glass material.
  10. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述粘结层中的粘结剂与所述第一波长转换材料的重量比为1:1~4:1。The weight ratio of the binder in the bonding layer to the first wavelength converting material is 1:1 to 4:1.
  11. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述第一波长转换材料的最大粒径不超过10 μm。The maximum wavelength of the first wavelength converting material does not exceed 10 μm.
  12. 如权利要求1所述的波长转换装置，其特征在于，A wavelength conversion device according to claim 1, wherein
    所述发光层对红光的透过率达到95%。The transmittance of the luminescent layer to red light is 95%.
  13. 一种发光装置，所述发光装置包括权利要求1~12中任一项所述的波长转换装置。A light-emitting device comprising the wavelength conversion device according to any one of claims 1 to 12.
     
     
PCT/CN2017/114748 2017-09-26 2017-12-06 Wavelength conversion device and light emitting device WO2019061818A1 (en)

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