CN104282826A - Method for manufacturing high-color-rendering white-light solid phosphors and high-color-rendering white-light light-emitting components - Google Patents

Abstract

The present invention relates to a method for producing a high color rendering white light solid-state phosphor and a high color rendering white light emitting element, in particular to a method for making a high color rendering warm white solid state phosphor and a high color rendering solid phosphor with a ceramic phosphor or a glass phosphor A method for a color rendering warm white light emitting element. In the present invention, ceramic phosphors or glass phosphors are used to replace the sealant mixed with glue and phosphors, and red or orange phosphors are further coated on the surface of ceramic phosphors or glass phosphors to enhance their color rendering. And a white light solid-state phosphor and a white light emitting element with high evolutivity are produced.

Description

Method for making high color rendering white light solid-state phosphor and high color rendering white light emitting element

technical field

The invention relates to a method for manufacturing high color rendering white light solid-state phosphors and high color rendering white light emitting elements, in particular to a method for making high color rendering warm white solid state phosphors and high color rendering solid phosphors with ceramic phosphors or glass phosphors. Method for warm white light emitting elements. the

Background technique

Most of the current white light-emitting elements are composed of phosphors of various colors and light-emitting diodes of different colors. For example, the surface of the blue light emitting diode is coated with yellow phosphor to make a white light emitting diode, or the surface of the blue light emitting diode is coated with green phosphor and red phosphor to make a white light emitting diode. In the traditional technology of white light-emitting elements, phosphor powder is coated by mixing phosphor powder with glue, and then coating the surface of light-emitting diodes (such as blue light-emitting diodes) by filling and extrusion. However, the mixing and coating process of phosphor and glue is not only complicated and time-consuming, but also prone to the problem of uneven distribution of phosphor. the

In order to solve the above problems, solid-state phosphors (such as ceramic phosphors or glass phosphors) have recently been developed that can replace the sealant formed by mixing glue and phosphor powder. The solid-state phosphor is not only simple and time-saving to manufacture, but also does not have the problem of uneven distribution of phosphor powder, thereby improving the reliability and service life of the white light emitting diode. However, limited by the current technology, only yellow-green or yellow solid-state phosphors can be produced at present, causing this solid-state phosphor and the white light-emitting element made of this solid-state phosphor to pass through blue light or purple light (or ultraviolet light). After excitation by irradiation, the resulting white light spectrum lacks the spectrum of wavelengths 580 nanometers (nm) to 670 nanometers (nm). Therefore, the color rendering of the white light produced by the solid-state phosphor and the white light-emitting element made of the solid-state phosphor is low, and its color rendering is generally only about 65-75, which cannot meet the requirements of high color rendering (ie CRI> 80). the

Furthermore, since the white light spectrum emitted by the solid-state phosphor and the white light-emitting element made of the solid-state phosphor is biased to a short-wavelength spectrum, the white light emitted by the solid-state phosphor and the white light-emitting element made of the solid-state phosphor The white light tends to be cool white light, and its color temperature is about 10000°K-5000°K. However, long-term exposure to high color temperature light sources may also inhibit the secretion of human melatonin at night, leading to problems such as insomnia and increased chances of suffering from cancer. Therefore, this solid-state phosphor and white light-emitting elements made of this Obviously not suitable for everyday lighting. the

In view of this, there is an urgent need for a method for producing a high color rendering white solid-state phosphor and a high color rendering white light-emitting element, and a solid-state phosphor and a high color rendering white light emitting element that can emit high color rendering white light are produced, and It can effectively adjust and control the color temperature of the white light it emits, and then emit warm white light with high color rendering. the

It can be seen that the above-mentioned existing white light emitting element obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently. Therefore, how to create a new method for manufacturing high-color-rendering white solid-state phosphors and high-color-rendering white light-emitting elements has become a goal that needs to be improved in the current industry. the

Contents of the invention

The purpose of the present invention is to overcome the defects existing in the existing white light emitting elements, and provide a novel method for manufacturing high color rendering white light solid-state phosphors and high color rendering white light emitting elements. The technical problem to be solved is to make it Ceramic phosphor or glass phosphor replaces the sealant mixed with phosphor and glue, and coats red or orange phosphor powder on the surface of ceramic phosphor or glass phosphor to enhance the solid-state phosphor (ceramic phosphor or Glass phosphor) color rendering, and effectively control its color temperature, so as to provide a white solid phosphor with high color rendering, and then provide a warm white solid phosphor with high color rendering. White light-emitting elements are made of solid-state phosphors (ceramic phosphors or glass phosphors) coated with red or orange phosphors on the surface, so as to improve the color rendering of white light-emitting elements and control their color temperature, thereby providing high color rendering. Warm white light emitting element. the

Another object of the present invention is to overcome the defects existing in the existing white light-emitting elements, and provide a method for manufacturing high-color-rendering white solid-state phosphors and high-color-rendering white light-emitting elements with a new structure. The technical problem to be solved is It is especially a method of making high color rendering white light solid-state phosphors with ceramic phosphors or glass phosphors. The method for manufacturing a high color rendering white light solid-state phosphor includes the following steps: (1) providing a solid-state phosphor, the solid-state phosphor is doped with phosphor powder, so that the solid-state phosphor can absorb part of the light emitted by a light-emitting element and excite light Mixing with the light emitted by the light-emitting element to produce white light; and (2) coating red phosphor or orange phosphor on the surface of the solid-state phosphor. In particular, the invention relates to a method for manufacturing a white light emitting element with high color rendering property by using a ceramic phosphor or a glass phosphor. The method for manufacturing a white light-emitting element with high color rendering comprises the following steps: (1) providing a substrate on which a light-emitting element is arranged; (2) disposing a solid-state phosphor on the substrate above the light-emitting element, and the solid-state The fluorescent body is doped with fluorescent powder, so that the solid-state fluorescent body absorbs part of the light emitted by the light-emitting element, and the excited light mixes with the light emitted by the light-emitting element to produce white light; and (3) coating red phosphor or Orange phosphor is on the surface of the solid phosphor. Wherein, step (3) may be implemented after step (2) is completed, or step (3) may be implemented before step (2). the

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A method for producing a high color rendering white light solid-state phosphor according to the present invention, which includes: (1) providing a solid-state phosphor, the solid-state phosphor is doped with phosphor powder, so that the solid-state phosphor can absorb light emitted by a light-emitting element Part of the emitted light is excited to mix with the light emitted by the light-emitting element to generate white light; and (2) coating red phosphor or orange phosphor on the surface of the solid-state phosphor. the

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures. the

The aforementioned method for producing a high color rendering white light solid-state phosphor is characterized in that the solid-state phosphor is a ceramic phosphor composed of a ceramic material and the phosphor powder. the

The aforementioned method for producing a high color rendering white light solid-state phosphor is characterized in that the solid-state phosphor is a glass phosphor composed of a glass material and the phosphor powder, wherein the phosphor powder is uniformly distributed or doped in the glass material . the

The aforementioned method for producing white light solid-state phosphors with high color rendering property is characterized in that the phosphors include yellow-green phosphors or yellow phosphors, or both. the

The aforementioned method for producing a high color rendering white light solid-state phosphor is characterized in that the step (2) includes: providing the red phosphor or the orange phosphor; uniformly mixing the red phosphor or the orange phosphor with an adhesive material to form preparing fluorescent glue; coating the fluorescent glue on the surface of the solid phosphor; and drying the fluorescent glue coated on the surface of the solid phosphor. the

The aforementioned method for producing a white light solid-state phosphor with high color rendering property is characterized in that the mixing ratio of the red phosphor or the orange phosphor and the adhesive material is 0.1%-50%. the

The aforementioned method for producing a white light solid-state phosphor with high color rendering property is characterized in that the mixing ratio of the red phosphor powder or the orange phosphor powder and the adhesive material is 0.8%-10%. the

The above-mentioned method for producing a white light solid-state phosphor with high color rendering property is characterized in that the adhesive material is silicone or epoxy. the

The aforementioned method for producing a high color rendering white light solid-state phosphor is characterized in that the step of applying the fluorescent glue on the surface of the solid-state phosphor is to apply the fluorescent glue on the surface of the solid-state phosphor by spraying or dispensing . the

The aforementioned method for producing a white light solid-state phosphor with high color rendering property is characterized in that the thickness of the fluorescent glue coated on the solid-state phosphor is 0.01 mm-1 mm. the

The aforementioned method for producing a white light solid-state phosphor with high color rendering property is characterized in that the thickness of the fluorescent glue coated on the solid-state phosphor is 0.01 mm-1 mm. the

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A method for producing a high color rendering white light-emitting element according to the present invention, which includes: (1) providing a substrate on which a light-emitting element is arranged; (2) disposing a solid-state phosphor on the substrate Above the light-emitting element, the solid-state phosphor is doped with phosphor powder, so that the solid-state phosphor absorbs part of the light emitted by the light-emitting element and excites light that mixes with the light emitted by the light-emitting element to produce white light; and (3 ) coating red phosphor or orange phosphor on the surface of the solid phosphor. the

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures. the

The aforementioned method for producing a high color rendering white light emitting element is characterized in that the light emitting element is a blue light emitting element, a purple light emitting element, or a laser. the

The aforementioned method for manufacturing a high color rendering white light emitting element is characterized in that the solid-state phosphor is a ceramic phosphor composed of a ceramic material and the phosphor powder, wherein the phosphor powder is uniformly distributed or doped in the ceramic material. the

The aforementioned method for manufacturing a high color rendering white light emitting element is characterized in that the solid-state phosphor is a glass phosphor composed of a glass material and the phosphor powder, wherein the phosphor powder is uniformly distributed or doped in the glass material. the

The aforementioned method for manufacturing a high color rendering white light-emitting device is characterized in that the phosphor contains yellow-green phosphor or yellow phosphor, or both. the

The aforementioned method for manufacturing a white light-emitting element with high color rendering is characterized in that the step (3) is implemented after the step (2) is completed. the

The aforementioned method for manufacturing a white light emitting element with high color rendering property is characterized in that the step (3) is implemented before the implementation of the step (2). the

The aforementioned method for producing a high color rendering white light-emitting element is characterized in that the step (3) comprises: providing the red phosphor or the orange phosphor; uniformly mixing the red phosphor or the orange phosphor with an adhesive material to prepare forming fluorescent glue; coating the fluorescent glue on the surface of the solid phosphor; and drying the fluorescent glue coated on the surface of the solid phosphor. the

The aforementioned method for producing a white light-emitting element with high color rendering property is characterized in that the mixing ratio of the red phosphor or the orange phosphor and the adhesive material is 0.1%-50%. the

The aforementioned method for manufacturing a white light-emitting element with high color rendering property is characterized in that the mixing ratio of the red phosphor or the orange phosphor and the adhesive material is 0.8%-10%. the

The aforementioned method for manufacturing a high color rendering white light emitting element is characterized in that the adhesive material is silicone or epoxy. the

The aforementioned method for manufacturing a high color rendering white light-emitting element is characterized in that the step of coating the fluorescent glue on the surface of the solid-state phosphor is sprayed or dispensed to apply the fluorescent glue on the surface of the solid-state phosphor. the

The aforementioned method for manufacturing a white light-emitting element with high color rendering property is characterized in that the thickness of the fluorescent glue coated on the solid-state phosphor is 0.01 mm-1 mm. the

The aforementioned method for manufacturing a white light-emitting element with high color rendering property is characterized in that the thickness of the fluorescent glue coated on the solid-state phosphor is 0.01 mm-1 mm. the

The aforementioned method for manufacturing a high color rendering white light-emitting element is characterized in that the red phosphor or the orange phosphor is coated on the upper surface of the solid phosphor. the

The aforementioned method for manufacturing a high color rendering white light emitting element is characterized in that the red phosphor or the orange phosphor is coated on the lower surface of the solid phosphor. the

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above, in order to achieve the above purpose, the present invention provides a method for manufacturing a high color rendering white solid-state phosphor and a high color rendering white light-emitting element, which can effectively improve the color rendering of the white solid-state phosphor and the white light-emitting element, And it can effectively control the color temperature of the white solid phosphor and the white light emitting element. the

By virtue of the above technical scheme, the present invention produces white light solid-state phosphors with high color rendering properties and high color rendering properties

The method of the white light emitting element has at least the following advantages and beneficial effects: In view of the above-mentioned embodiments, the present invention provides a method for manufacturing a high color rendering white light solid-state phosphor and a high color rendering white light emitting element, which can effectively improve the white light solid-state fluorescence The color rendering properties of solid-state phosphors and white light-emitting elements can be effectively controlled, making it more suitable for daily lighting. the

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited, and in conjunction with the accompanying drawings, the detailed description is as follows. the

Description of drawings

1A to 1B are cross-sectional flowcharts of a method for manufacturing a high color rendering white light solid-state phosphor according to an embodiment of the present invention. the

FIG. 2 is a flow chart of the steps of coating red phosphor or orange phosphor on the surface of the solid-state phosphor in the method for manufacturing a high-color-rendering white light solid-state phosphor of the present invention. the

3A to 3C are cross-sectional flowcharts of a method for manufacturing a high color rendering white light emitting device according to an embodiment of the present invention. the

FIG. 4 is a schematic diagram of a high color rendering white light emitting element according to another embodiment of the present invention. the

100: High color rendering white solid-state phosphor

102: solid state phosphor

104: phosphor powder

106: red or orange phosphor film layer

200-206: Various steps in the process of coating red phosphor or orange phosphor on the surface of solid phosphor 102

300, 300': high color rendering white light emitting element

302: Substrate

304: Light emitting element

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the following is combined with the accompanying drawings and preferred embodiments to discuss the production of high color rendering white solid-state phosphors and high color rendering white light emitting elements according to the present invention. Its specific implementation manner, structure, characteristics and effect thereof of the method are described in detail as follows. the

Some embodiments of the invention are described in detail below. However, the invention can be broadly practiced in other embodiments than this detailed description. That is to say, the scope of the present invention is not limited by the proposed embodiments, but is subject to the patent scope of the present invention. Secondly, when each element or step in the diagram of the embodiment of the present invention is described as a single element or step, it should not be regarded as a limited cognition, that is, when the following description does not particularly emphasize the limitation on the number, the present invention The spirit and scope of application can be extended to structures and methods in which multiple elements or structures coexist. Furthermore, in this specification, different parts of each element are not drawn in full scale, and some dimensions are exaggerated or simplified compared with other relevant dimensions, in order to provide a clearer description and enhance the understanding of the present invention. However, the prior art used in the present invention is only cited here as an emphatic reference to help explain the present invention. the

1A to 1B are three-dimensional flow charts of manufacturing a high color rendering white solid-state phosphor 100 according to an embodiment of the present invention, which show the entire process and various process steps in a cross-sectional structure. Referring to FIG. 1A, first, a solid-state phosphor 102 is provided. The solid-state phosphor 102 is doped with at least one phosphor powder 104, which is evenly doped or distributed in the solid-state phosphor 102, so that the solid-state phosphor 102 can absorb light-emitting elements. , such as blue light (wavelength of 440 nanometers (nm)-475 nanometers (nm)), violet or ultraviolet light (wavelength of 350 nanometers (nm)-400 nanometers (nm)), or laser, part of the light emitted excites A light is mixed with the light emitted by the light-emitting element to produce white light. the

The solid-state phosphor 102 is a ceramic phosphor composed of a ceramic material and at least phosphor powder. When the ceramic material is calcined or made into the solid-state phosphor 102, the phosphor powder can be added to the ceramic material so that it can be evenly distributed or Doped in ceramic materials, and made into ceramic phosphors. Alternatively, the solid-state phosphor 102 is a glass phosphor composed of glass material and at least phosphor powder, wherein, when the glass material is fired or made into the solid-state phosphor 102, the phosphor powder can be added to the glass material to make it evenly Distributed or doped in glass materials to make glass phosphors. The solid-state fluorescent body 102 can be a solid-state fluorescent sheet, a solid-state fluorescent block, or other shapes, which can take various shapes according to requirements, which is not limited in the present invention. the

The phosphor 104 doped or distributed in the solid-state phosphor 102 is a yellow-green phosphor or a yellow phosphor, or the phosphor 104 can also contain a yellow-green phosphor and a yellow phosphor at the same time, that is, a yellow-green phosphor and a yellow phosphor. The powder is uniformly doped or distributed in the solid phosphor 102 . The solid-state fluorescent body 102 can be a solid-state fluorescent sheet, a solid-state fluorescent block, or other shapes, which can take various shapes according to requirements, which is not limited in the present invention. the

Next, referring to FIG. 1B, a red phosphor with a wavelength of 610 nanometers (nm) to 670 nanometers (nm) or an orange phosphor with a wavelength of 580 nanometers (nm) to 610 nanometers (nm) is coated on the solid-state phosphor On the surface of the body 102 , such as the upper surface or the lower surface, a red or orange phosphor film layer 106 is formed on the solid phosphor 102 . The spectrum of 610 nanometers (nm)-670 nanometers (nm) wavelength or 580 nanometers (nm)-610 nanometers (nm) wavelength that the solid-state phosphor 102 lacks is provided by the red or orange phosphor film layer 106, thereby enhancing solid fluorescence The color rendering property of the body 102 is used to produce a white light solid phosphor 100 with high color rendering property. the

FIG. 2 is a flow chart of the steps of coating red phosphor or orange phosphor on the surface of the solid phosphor 102 in the method for manufacturing a high color rendering white solid phosphor of the present invention, and further describes the steps shown in FIG. 1B , which will be described later Details below. Referring to Fig. 2, the surface step of coating red phosphor or orange phosphor shown in Fig. 1B in solid phosphor 102 comprises the following steps: first, provide the red phosphor with 610 nanometer (nm)-670 nanometer (nm) wavelength , or an orange phosphor with a wavelength of 580 nanometers (nm) to 610 nanometers (nm) (step 200). Next, uniformly mix the red fluorescent powder (or orange fluorescent powder) with the adhesive material to prepare fluorescent adhesive (step 202), wherein the adhesive material can be silicone, epoxy, or other available Adhesive glue. In step 202, the mixing ratio of the red fluorescent powder (or orange fluorescent powder) and the adhesive material is 0.1%-50% (percentage by weight), that is, the red fluorescent powder (or orange fluorescent powder) accounts for 0.1%-50% of the fluorescent adhesive (percentage by weight), and the preferred mixing ratio of red fluorescent powder (or orange fluorescent powder) and adhesive material is 0.8%-10% (percentage by weight). The mixing ratio of the red phosphor (or orange phosphor) and the glue will affect the wavelength of 610 nanometers (nm)-670 nanometers (nm) or 80 nanometers (nm)-610 nanometers (nm) provided to the solid phosphor 102. The intensity of the spectrum further affects the color rendering of the solid-state phosphor 102 and the color temperature of the solid-state phosphor 102 . Therefore, the color rendering and color temperature of the solid-state phosphor 102 can be controlled by changing the mixing ratio of the red phosphor (or orange phosphor) and the glue material. the

Although, in this embodiment, the fluorescent glue is prepared by uniformly mixing a single red phosphor or a single orange phosphor with the glue, but in other embodiments of the present invention, multiple red phosphors or multiple The fluorescent glue can be prepared by uniformly mixing the orange phosphor powder and the glue material. Even in order to further improve the color rendering and lower the color temperature, the red phosphor powder, the orange phosphor powder and the glue material can be uniformly mixed at the same time to prepare the fluorescent glue. the

Next, the fluorescent glue is coated on the surface of the solid-state phosphor (step 204 ), such as the upper surface or the lower surface. Step 204 is to apply fluorescent glue on the surface of the solid-state phosphor by spraying or dispensing, wherein the thickness of the fluorescent glue coated on the solid-state phosphor is 0.01 millimeter (mm)-1 millimeter (mm), and the thickness of the fluorescent glue coating The preferred thickness of the solid-state phosphor is 0.01 millimeter (mm)-1 millimeter (mm). Finally, the fluorescent glue coated on the surface of the solid phosphor 102 is dried (step 206 ), and a red or orange phosphor film layer 106 is formed on the surface of the solid phosphor 102 . The red or orange phosphor film layer 106 receives light (such as blue light (wavelength is 440 nanometers (nm)-475 nanometers (nm)), purple light or ultraviolet light (wavelength is 350 nanometers (nm)-400 nanometers (nm)), or laser ) to produce red light with a wavelength of 610 nanometers (nm) to 670 nanometers (nm) or orange light with a wavelength of 580 nanometers (nm) to 610 nanometers (nm). the

The high color rendering white light solid state phosphor 100 produced by the method for producing high color rendering white light solid state phosphor of the present invention (the method and steps shown in FIGS. 1A-1B and FIG. When irradiated by 440 nanometers (nm)-475 nanometers (nm)), purple light or ultraviolet light (wavelength is 350 nanometers (nm)-400 nanometers (nm)), or laser), part of the light will excite the inside of the solid-state phosphor 102 The yellow-green phosphor (or yellow phosphor) 104 produces yellow-green light (or yellow light) with a wavelength of 510 nanometers (nm)-575 nanometers (nm), and part of the light will excite the red or orange color on the surface of the solid-state phosphor 102 phosphor film layer 106 to generate red light with a wavelength between 610 nanometers (nm) and 670 nanometers (nm) or orange light with a wavelength between 580 nanometers (nm) and 610 nanometers (nm), and the solid phosphor 102 The generated yellow-green light (or yellow light), the red light or orange light generated by the red or orange phosphor film layer 106, and the remaining light that is not absorbed by the solid-state phosphor 102 and the red or orange phosphor film layer 106 are mixed to form Forms white light. the

The white light produced by the high color rendering white light solid-state phosphor 100 of the present invention consists of yellow-green light (or yellow light) with a wavelength of 510 nanometers (nm)-575 nanometers (nm), and a wavelength of 610 nanometers (nm)-670 nanometers. Red light between (nm) or orange light with a wavelength between 580 nanometers (nm) and 610 nanometers (nm), and blue light with a wavelength between 440 nanometers (nm) and 475 nanometers (nm) or a wavelength between 350 Nanometer (nm)-400 nanometer (nm) between the purple light (or ultraviolet light) mixed, therefore, its white light spectrum spans almost all visible light wavelengths, and complements the lack of white light produced by the solid-state phosphor 100 Spectrum of high wavelength band, such as red light with wavelength between 610 nanometers (nm)-670 nanometers (nm) or orange light with wavelength between 580 nanometers (nm)-610 nanometers (nm), so the high Color rendering white light solid-state phosphor 100 can greatly improve the color rendering of white light compared with solid-state phosphors 102 (such as ceramic phosphors or glass phosphors), and increase the color rendering to between 80-99 to achieve high color rendering (CRI>80) requirements. On the contrary, the white light produced by the solid-state phosphor 102 (such as ceramic phosphor or glass phosphor) is illuminated by light, because it is yellow-green light (or yellow light) with a wavelength of 510 nanometers (nm)-575 nanometers (nm), and the wavelength is between Blue light between 440 nanometers (nm) and 475 nanometers (nm) or purple light (or ultraviolet light) with a wavelength between 350 nanometers (nm) and 400 nanometers (nm) is mixed, so it lacks low color temperature and long wavelength Spectral composition, such as red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm), orange light with a wavelength of 580 nanometers (nm)-610 nanometers (nm), therefore, its color rendering performance can only reach 65-75 , but cannot meet the requirements of high color rendering (CRI>80). the

In other words, in the method for manufacturing a high color rendering white light solid-state phosphor of the present invention, the solid phosphor 102 (such as a ceramic phosphor or a glass phosphor) is coated on the surface (such as the upper surface or the bottom surface) with a light-receiving (such as Blue light, purple light (or ultraviolet light), or laser) irradiation can excite red phosphors with red light at a wavelength of 610 nanometers (nm)-670 nanometers (nm), or light (such as blue light, purple light (or ultraviolet light), or Laser) irradiation will excite the orange fluorescent powder that emits orange light with a wavelength of 580 nanometers (nm)-610 nanometers (nm), and the supplementary solid phosphor 102 is irradiated by light (such as blue light, purple light (or ultraviolet light), or laser). 610 nanometers (nm)-670 nanometers (nm) wavelength or 580 nanometers (nm)-610 nanometers (nm) wavelength spectrum irradiation that the white light spectrum lacks, thereby the solid phosphor 102 (the white light produced by light irradiation) The color rendering is improved from the original 65-75 to over 80, meeting the requirement of high color rendering (CRI>80), so as to produce the high color rendering white light solid phosphor 100 that can emit high color rendering white light when irradiated by light. Even, in order to further improve the color rendering of the solid phosphor 102, the red light (such as blue light, violet light (or ultraviolet light), or laser light) will be excited to emit red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm) at the same time. Phosphor powder, and the orange phosphor powder that will excite orange light with a wavelength of 580 nanometers (nm)-610 nanometers (nm) when irradiated by light (such as blue light, violet light (or ultraviolet light), or laser) is coated on the surface of the solid phosphor 102 At the same time, it supplements the 610 nanometer (nm)-670 nanometer (nm) wavelength and the 580 nanometer (nm) wavelength that are lacking in the white light spectrum generated by the solid phosphor 102 irradiated by light (such as blue light, purple light (or ultraviolet light), or laser light). Spectrum with a wavelength of -610 nanometers (nm), thereby greatly improving the color rendering of the solid phosphor 102 (white light generated by light irradiation), and producing a high color rendering white light solid-state phosphor that can be irradiated by light and emit white light with higher color rendering 100. the

Furthermore, the white light generated by the solid-state phosphor 102 (such as ceramic phosphor or glass phosphor) irradiated by light is yellow-green light (or yellow light) with a wavelength of 510 nanometers (nm)-575 nanometers (nm) and a wavelength of 440 nanometers (nm). It is a mixture of blue light between nanometers (nm) and 475 nanometers (nm) or purple light (or ultraviolet light) with a wavelength between 350 nanometers (nm) and 400 nanometers (nm). The composition of color temperature and long-wavelength spectrum, such as red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm), and orange light with a wavelength of 580 nanometers (nm)-610 nanometers (nm), so the color temperature is often cooler. Most of them can reach between 10000°K-5000°K, or even exceed 10000°K. Therefore, the white light produced by them is cold white light and is not suitable for daily lighting. However, the white light composition (spectrum) produced by the high color rendering white light solid state phosphor 100 produced by the method for producing the high color rendering white light solid state phosphor of the present invention includes light with low color temperature and long wavelength (such as Red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm), orange light with a wavelength of 580 nanometers (nm)-610 nanometers (nm), or both), so it can further reduce the white light it produces The color temperature can be reduced to as low as 2000°K, so it can produce warm white light suitable for daily lighting. the

In addition, due to the high color rendering white light solid-state phosphor 100 being irradiated by light, the white light produced by the yellow-green light (or yellow light) (produced by the solid-state phosphor 102) with a wavelength of 510 nanometers (nm) to 575 nanometers (nm) and a wavelength of 610 nanometers (nm) Red light between nanometers (nm) and 670 nanometers (nm) or orange light with a wavelength between 580 nanometers (nm) and 610 nanometers (nm) (produced by red or orange phosphor film layer 106), and wavelengths between Blue light between 440 nanometers (nm) and 475 nanometers (nm) or purple light (or ultraviolet light) with a wavelength between 350 nanometers (nm) and 400 nanometers (nm) (from the light source) is mixed. Therefore, The wavelength can be controlled and changed at 610 by controlling and changing the amount of red or orange phosphor in the red or orange phosphor film layer 106 in the high color rendering white solid phosphor 100 (or on the surface of the solid phosphor 102 ). The proportion of red light between nanometers (nm)-670 nanometers (nm) or orange light with a wavelength between 580 nanometers (nm) and 610 nanometers (nm) in white light, and then control and change high color rendering white light solid-state fluorescence The color rendering property and color temperature of the white light generated by the body 100 irradiated by light. the

In other words, in the method for producing a high color rendering white light solid-state phosphor of the present invention (the method and steps shown in FIG. 1A-FIG. 1B and FIG. 2 ), in the steps shown in FIG. 1B , by controlling and changing the coating The amount of red or orange phosphor powder on the surface of the solid-state phosphor 102 controls and changes the color rendering and color temperature of the white light produced by the high-color-rendering white solid-state phosphor 100 irradiated by light, or changes in step 202 of FIG. The mixing ratio of the red phosphor or the orange phosphor and the adhesive material can change the amount of red or orange phosphor coated on the surface of the solid-state phosphor 102, thereby controlling and changing the effect of the high color rendering white solid-state phosphor 100 on being irradiated by light. The color rendering and color temperature of the white light produced. For example, when the mixing ratio of red phosphor or orange phosphor and adhesive material is 0.8%-3%, the color rendering of the white light produced by the high color rendering white solid-state phosphor 100 irradiated by light can reach 80-99. When the mixing ratio of red phosphor or orange phosphor and adhesive material is 0.8%-0.9%, the color temperature of the white light produced by the high color rendering white solid-state phosphor 100 irradiated by light can reach 6000°K. When the mixing ratio of red phosphor or orange phosphor and glue is 2%-3%, the color temperature of the white light produced by the high color rendering white solid-state phosphor 100 irradiated by light can reach 4000°K. When the mixing ratio of red phosphor or orange phosphor and adhesive material is 3%-5%, the color temperature of the white light produced by the high color rendering white solid-state phosphor 100 irradiated by light can reach 3000°K. When the mixing ratio of red phosphor or orange phosphor and adhesive material is 5%-8%, the color temperature of the white light produced by the high color rendering white solid-state phosphor 100 irradiated by light can reach 2200°K-2000 °K. That is, when the mixing ratio of red phosphor or orange phosphor and glue is higher, the light with low color temperature and long wavelength (for example, red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm) or a wavelength of 580 nanometers (nm)-610 nanometer (nm) orange light accounts for a larger proportion in the white light produced by the high color rendering white light solid-state phosphor 100, so the color rendering property of the white light will be higher, and the color temperature will be lower. Low. By controlling and changing the mixing ratio of red phosphor or orange phosphor and glue, the method for producing high color rendering white light solid-state phosphor of the present invention can produce white light with a color temperature of 10000°K to warm white light of 2000°K. High color rendering white light solid-state phosphor in the middle spectrum. 

In addition, the present invention further provides a method for a high color rendering white light emitting device, especially a method for manufacturing a high color rendering white light emitting device using the high color rendering solid phosphor 100 produced by the method shown in FIGS. 1A-1B . 3A to 3C are three-dimensional flowcharts of a method for manufacturing a high color rendering white light emitting device according to an embodiment of the present invention, which show the entire process and various process steps in a cross-sectional structure. First, referring to FIG. 3A , first, a substrate 302 is provided, wherein a light emitting element 304 is disposed on the substrate 302 . The base material 302 can be a substrate or a wafer, and the light emitting element 304 can be a blue light emitting element (such as a blue light emitting diode), a purple light emitting element (such as a purple light emitting diode), or a laser (element). the

Referring to FIG. 3B , next, the solid-state phosphor 102 is arranged above the light-emitting element 304 on the substrate 302, especially above the light-emitting surface of the light-emitting element 304, and the light-emitting element 304 is accommodated between the substrate 302 and the solid-state phosphor. Between 102. The solid-state phosphor 102 includes at least one phosphor 104 (such as yellow-green phosphor or yellow phosphor), which is evenly doped or distributed in the solid-state phosphor 102, so that the solid-state phosphor 102 can absorb the emitted light from the light-emitting element 304. Part of the light, such as blue light, purple light, or laser light, excites colored light, such as yellow-green light or yellow light, which is mixed with the light emitted by the light-emitting element 304 to produce cool white light with a cooler color temperature. The material, composition, and shape of the solid-state phosphor 102, and the material and composition of the phosphor 104 have been described in detail above (in relation to the description in FIG. 1A ), so they will not be described here. the

Then, referring to FIG. 3C, the red phosphor with a wavelength of 610 nanometers (nm)-670 nanometers (nm) or the orange phosphor with a wavelength of 580 nanometers (nm)-610 nanometers (nm) is coated on the solid-state fluorescent On the surface of the body 102 , such as the upper surface, a red or orange phosphor film layer 106 is formed on the solid phosphor 102 , thereby forming a high color rendering white light emitting element 300 . The red or orange phosphor film layer 106 is irradiated by light (such as blue light, purple light (or ultraviolet light), or laser light) and will excite red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm) or a wavelength of 580 nanometers (nm). -Orange light at a wavelength of 610 nanometers (nm). the

Like the step of coating red or orange phosphor on the surface of solid-state phosphor 102 shown in FIG. 1B, the step of coating red or orange phosphor on the surface of solid-state phosphor 102 shown in FIG. 2 to put red or orange phosphor on the surface of solid phosphor 102 to form red or orange phosphor film layer 106. These methods and steps have been described in detail above, so they will not be repeated here. narrative. In addition, in the embodiment shown in FIG. 3A-FIG. 3B, although the solid-state phosphor 102 is arranged on the substrate 302 first (the step shown in FIG. 3B ), the red or orange phosphor is coated on the solid-state phosphor. On the surface of the solid-state phosphor 102, a red or orange phosphor film layer 106 is formed (step shown in FIG. 3C ), but in other embodiments of the present invention, red or orange phosphor can also be coated on the surface of the solid-state phosphor 102 first. After the red or orange phosphor film layer 106 is formed on the surface, the high color rendering white light solid-state phosphor 100 is produced by the method shown in FIGS. 1A-1B before the red or orange phosphor film is formed on the surface. The solid state phosphor 102 of the layer 106 (ie, the high color rendering white light solid state phosphor 100 ) is disposed on the substrate 304 . the

In addition, in the embodiment shown in FIG. 3A-FIG. 3B, although the high color rendering white light emitting element 300 is coated with red or orange phosphor on the upper surface of the solid phosphor 102, and on the solid phosphor 102 A red or orange phosphor film layer 106 is formed on the surface, so that the light emitted by the light-emitting element first passes through the solid-state phosphor 102, and after being excited to emit yellow-green light or yellow light, it irradiates the red or orange phosphor film layer 106 to activate It emits red or orange light. However, in other embodiments of the present invention (such as the high color rendering white light emitting element 300' as shown in FIG. 4), red or orange phosphor can also be coated on the lower surface of the solid-state phosphor 102, and the solid-state phosphor A red or orange phosphor film layer 106 is formed on the lower surface of the body 102, so that the light emitted by the light-emitting element first passes through the red or orange phosphor film layer 106, and after being excited to emit red or orange light, it illuminates the solid-state phosphor 102, and excite it to emit yellow-green or yellow light. However, although the method for manufacturing a high color rendering white light emitting element of the present invention can adopt the design of the high color rendering white light emitting element 300 shown in FIG. 3C, or adopt the design of the high color rendering white light emitting element 300' shown in FIG. , but because the design of the high color rendering white light emitting element 300 is 30%-40% brighter than the design of the high color rendering white light emitting element 300', therefore, the high color rendering white light emitting element that requires greater brightness is still based on It is preferable to adopt the structure and configuration of the high color rendering white light emitting element 300 . the

The high color rendering white light-emitting element 300 emits light through the light-emitting element 304, such as blue light (wavelength is 440 nanometers (nm)-475 nanometers (nm)), purple light or ultraviolet light (wavelength is 350 nanometers (nm)-400 nanometer (nm)), or laser, to excite the solid-state phosphor 102 (such as ceramic phosphor or glass phosphor) in the high color rendering white light emitting element 300 to generate yellow-green light with a wavelength of 510 nanometers (nm)-575 nanometers (nm) ( or yellow light), and excite the red or orange phosphor film layer 106 coated on the surface of the solid-state phosphor 102 to generate red light with a wavelength of 610 nanometers (nm)-670 nanometers (nm) or a wavelength of 580 nanometers (nm)-610 nanometer orange light, and the yellow-green light (or yellow light) that solid-state phosphor 102 emits, the red or orange phosphor film layer 106 emits red light or orange light, and the light that light-emitting element 304 emits mixes into white light . Because the white light emitted by the high color rendering white light emitting element 300 contains the spectrum with a wavelength of 610 nanometers (nm) to 670 nanometers (nm) or a wavelength of 580 nanometers (nm) to 610 nanometers (nm) that the solid phosphor 102 lacks (low color temperature long-wavelength spectrum), therefore, the white light spectrum emitted by the high color rendering white light emitting element 300 covers almost all visible light spectra, so it has high color rendering (CRI>80), and its color temperature can also be effectively reduced, Even its color temperature can drop to the color temperature range of warm white light. Therefore, the high color rendering white light emitting element 300 produced by the method of the present invention (the method shown in FIG. 3A to FIG. 3C ) can produce high color rendering and low Light emitting element with white light in color temperature. The light emitting principle and mechanism of the high color rendering white light emitting element 300 are the same as those of the high color rendering solid-state phosphor 100 to generate white light, and have been described in detail above, so they will not be described here. the

As in the aforementioned method of manufacturing high color rendering white light solid-state phosphors of the present invention (the method and steps shown in Figure 1A-1B and Figure 2), the method of manufacturing high color rendering white light emitting elements of the present invention can also be controlled by By changing the amount of red or orange phosphor powder coated on the surface of the solid-state phosphor 102 , the color rendering and color temperature of the white light generated by the high-color-rendering white solid-state phosphor 100 is controlled and changed. That is to say, in the method for manufacturing a high color rendering white light-emitting element of the present invention, changing the mixing ratio of the red phosphor or the orange phosphor and the adhesive can be achieved by changing the red or orange phosphor coated on the surface of the solid-state phosphor 102 Quantity, and then control and change the color rendering and color temperature of the white light generated by the high color rendering white solid phosphor 100 irradiated by light. These methods of controlling and changing the color rendering and color temperature of white light have been described in detail above, and will not be described here. the

In view of the above-mentioned embodiments, the present invention provides a method for manufacturing a high color rendering white solid-state phosphor and a high color rendering white light-emitting element, which can effectively improve the color rendering of the white solid-state phosphor and the white light-emitting element, and can effectively Controlling the color temperature of white solid-state phosphors and white light-emitting elements makes them more suitable for daily lighting. the

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solution of the present invention. the

Claims (27)

1. make a method for high color rendering white solid state fluorophor, it is characterized in that comprising:

(1) solid state fluorescence body is provided, doped with fluorescent material in this solid state fluorescence body, this solid state fluorescence body can be absorbed some light that light-emitting component sends and inspire light with the light that this light-emitting component sends and mix, and produce white light; And

(2) coating red fluorescence powder or orange fluorescent powder are on the surface of this solid state fluorescence body.

2. the method making high color rendering white solid state fluorophor as claimed in claim 1, is characterized in that the ceramic phosphor that this solid state fluorescence body forms for ceramic material and this fluorescent material.

3. the method making high color rendering white solid state fluorophor as claimed in claim 1, it is characterized in that the glass fluorophor that this solid state fluorescence body forms for glass material and this fluorescent material, wherein, this fluorescent material distributes equably or is doped in this glass material.

4. the method making high color rendering white solid state fluorophor as claimed in claim 1, it is characterized in that this fluorescent material comprises yellowish green fluorescent powder or yellow fluorescent powder, or both all comprises.

5. the method making high color rendering white solid state fluorophor as claimed in claim 1, is characterized in that this step (2) comprises:

This red fluorescence powder or this orange fluorescent powder are provided;

This red fluorescence powder or this orange fluorescent powder and glue material Homogeneous phase mixing are prepared into fluorescent glue;

Be coated with this fluorescent glue on the surface of this solid state fluorescence body; And

Dry this fluorescent glue coated on this solid state fluorescence surface.

6. the method making high color rendering white solid state fluorophor as claimed in claim 5, is characterized in that the mixed proportion of this red fluorescence powder or this orange fluorescent powder and this glue material is 0.1%-50%.

7. the method making high color rendering white solid state fluorophor as claimed in claim 6, is characterized in that the mixed proportion of this red fluorescence powder or this orange fluorescent powder and this glue material is 0.8%-10%.

8. the method making high color rendering white solid state fluorophor as claimed in claim 5, is characterized in that this glue material is silica gel or epoxy resin.

9. the method making high color rendering white solid state fluorophor as claimed in claim 5, is characterized in that this fluorescent glue is coated on this solid state fluorescence surface with spraying or some glue mode by this fluorescent glue of this coating step on the surface of this solid state fluorescence body.

10. the as claimed in claim 5 method making high color rendering white solid state fluorophor, is characterized in that the thickness that this fluorescent glue coats this solid state fluorescence body is 0.01 millimeter-1 millimeter.

11. methods making as claimed in claim 10 high color rendering white solid state fluorophor, is characterized in that the thickness that this fluorescent glue coats this solid state fluorescence body is 0.01 millimeter-1 millimeter.

12. 1 kinds of methods making high color rendering white light emitting element, is characterized in that comprising:

(1) provide base material, this base material is provided with light-emitting component;

(2) solid state fluorescence body is arranged at above this light-emitting component on this base material; doped with fluorescent material in this solid state fluorescence body; this solid state fluorescence body is absorbed some light that this light-emitting component sends and inspire light with the light that this light-emitting component sends and mix, and produce white light; And

(3) coating red fluorescence powder or orange fluorescent powder are on the surface of this solid state fluorescence body.

The method of 13. high color rendering white light emitting elements as claimed in claim 12, is characterized in that this light-emitting component is blue light emitting element, purple light light-emitting component or laser.

14. methods making high color rendering white light emitting element as claimed in claim 12, it is characterized in that the ceramic phosphor that this solid state fluorescence body forms for ceramic material and this fluorescent material, wherein, this fluorescent material distributes equably or is doped in this ceramic material.

15. methods making high color rendering white light emitting element as claimed in claim 12, it is characterized in that the glass fluorophor that this solid state fluorescence body forms for glass material and this fluorescent material, wherein, this fluorescent material distributes equably or is doped in this glass material.

16. methods making high color rendering white light emitting element as claimed in claim 12, it is characterized in that this fluorescent material comprises wherein this fluorescent material and comprises yellowish green fluorescent powder or yellow fluorescent powder, or both all comprise.

17. methods making high color rendering white light emitting element as claimed in claim 12, is characterized in that this step (3) is implemented after step (2) completes.

18. methods making high color rendering white light emitting element as claimed in claim 12, is characterized in that this step (3) was implemented before step (2) is implemented.

19. methods making high color rendering white light emitting element as claimed in claim 12, is characterized in that this step (3) comprises:

This red fluorescence powder or this orange fluorescent powder are provided;

This red fluorescence powder or this orange fluorescent powder and glue material Homogeneous phase mixing are prepared into fluorescent glue;

Be coated with this fluorescent glue on the surface of this solid state fluorescence body; And

Dry this fluorescent glue coated on this solid state fluorescence surface.

20. methods making high color rendering white light emitting element as claimed in claim 19, is characterized in that the mixed proportion of this red fluorescence powder or this orange fluorescent powder and this glue material is 0.1%-50%.

21. methods making high color rendering white light emitting element as claimed in claim 20, is characterized in that the mixed proportion of this red fluorescence powder or this orange fluorescent powder and this glue material is 0.8%-10%.

22. methods making high color rendering white light emitting element as claimed in claim 19, is characterized in that this glue material is silica gel or epoxy resin.

23. methods making high color rendering white light emitting element as claimed in claim 19, is characterized in that this fluorescent glue is coated on this solid state fluorescence surface with spraying or some glue mode by this fluorescent glue of this coating step on the surface of this solid state fluorescence body.

24. methods making as claimed in claim 19 high color rendering white light emitting elements, is characterized in that the thickness that this fluorescent glue coats this solid state fluorescence body is 0.01 millimeter-1 millimeter.

25. methods making as claimed in claim 24 high color rendering white light emitting elements, is characterized in that the thickness that this fluorescent glue coats this solid state fluorescence body is 0.01 millimeter-1 millimeter.

26. methods making high color rendering white light emitting element as claimed in claim 12, is characterized in that this red fluorescence powder or this orange fluorescent powder are coated on the upper surface of this solid state fluorescence body.

27. methods making high color rendering white light emitting element as claimed in claim 12, is characterized in that this red fluorescence powder or this orange fluorescent powder are coated on the lower surface of this solid state fluorescence body.