TW201738358A - Inorganic fluorescent material, its manufacturing method and application products capable of achieving high transparency, thermal conductivity, insulation and chemical stability which are normally possessed by general glass materials - Google Patents

Abstract

According to the present invention, a formula composition of inorganic fluorescent material comprises at least one inorganic material and one fluorescent powder; wherein the inorganic material formula component further comprises water; wherein the inorganic material comprises a silicate. The manufacturing method mainly comprises the following steps of: condensing and solidifying silanol group (Si-OH) in a solution containing silicon atoms into three-dimensional siloxane (Si-O-Si) material, wherein inorganic material solution is used as the main binding solution, and mixed with at least one kind of fluorescent powder; after the curing and setting, good strength, as well as high transparency, thermal conductivity, insulation and chemical stability possessed by general glass materials can be obtained; this invention can be applied to products of light-emitting diode components or optical components and others, and the recovered products or defective products during the manufacturing process can be reworked in an appropriate solution and operating conditions to effectively improve the recovery rate of fluorescent powder for achieving the effect of reducing costs.

Description

Inorganic fluorescent material, product thereof, and application product thereof

The invention relates to the application of a white light emitting diode (Light-emitting diode) phosphor powder, that is, to provide an inorganic fluorescent material with high transparency and high heat resistance, which will help to improve or enhance the current white light. The temperature limit of the LED is used, and the application of the material and technology can also expand the applicability of the phosphor powder and improve the application method and characteristics of the phosphor layer material in the white LED.

The fluorescent powder of the conventional white light emitting diode is adhered or encapsulated on the light emitting diode through an organic colloid (for example, Epoxy), and the disadvantage is that the temperature resistance of the entire white light emitting diode is limited by the material of the organic colloid. At higher temperatures, the phenomenon of high temperature yellowing or cracking of the organic colloid of the package is likely to occur. Moreover, the use of these organic colloids, even through the means of improving the phosphor powder or spraying technology, can not effectively improve the working temperature of the white light emitting diode.

In recent years, white light-emitting diodes have focused more on cost and feature enhancement; in contrast, improving the life and temperature resistance of packaged white light-emitting diodes is also an important research and development goal of many LED manufacturers. In view of the limitation of the use temperature of traditional organic resins, the use of inorganic materials as package adhesives has been fully recognized and is one of the important development issues and directions.

In principle, inorganic materials have better temperature resistance and thermal conductivity relative to organic materials; currently published all-inorganic fluorescent sheets mainly include ceramic single-chip (or fluorescent single-wafer) and glass fluorescent sheets. Among them, the ceramic single wafer is mainly made of a fluorescent material, and a single crystal column is formed by a high temperature crystal growth method of 1700 degrees Celsius or more, and is processed by a cutting method. As for the glass ray, the phosphor powder is mixed with a suitable glass frit, formed by sintering, and then subjected to appropriate cutting and post-treatment.

However, the above-mentioned ceramic single-chip and glass fluorescent sheet are extremely expensive to manufacture, and in the process of manufacturing a ceramic single-chip, in order to achieve the single-crystal characteristics of the fluorescent sheet, the chemical composition thereof is often strictly limited, and further, In essence, the efficiency of light conversion, the use of such materials usually directly increases the size of the phosphor, and limits the range of applicable products; further, this high temperature single crystal manufacturing technology is only available for sale now. A small number of phosphors, so the lack of color diversity, which makes it greatly limited in the application of white light emitting diodes.

As for the glass phosphor, since it is co-fired by the phosphor powder and the glass powder, this still causes the phosphor powder to be affected by the high-temperature liquid phase sintering during the manufacturing process, resulting in a decrease in luminous efficiency or characteristics, so in the formulation On the other hand, the mastery is quite difficult, and currently only a few phosphors can withstand the sintering temperature of such glass powder, so the glass flakes that can be manufactured are also affected by the sintering process and the practicality is lowered; Similarly, the cutting and grinding processes in the latter section also increase the processing cost of such materials.

In view of this, the main object of the present invention is to provide a highly transparent, high heat-resistant all-inorganic fluorescent material which is more competitive in mass production, which will contribute to the improvement of the current temperature limit of white LEDs, and the manufacture thereof. The technology also improves the choice and suitability of the phosphor powder, as well as improving the application method and product characteristics of the phosphor layer material in white LEDs.

The inorganic fluorescent material of the present invention has a formulation comprising at least one inorganic material and a phosphor powder; the inorganic material composition further comprises water; wherein the inorganic material comprises monocaprate; wherein the niobate The chemical formula is: M ₂ O·nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, n is between 0.5 and 7, and the best use range is 1.5. Between ~6, and the content of water (H ₂ O) in the inorganic material is between 10 and 95 wt%, and the better industrial application is between 20 and 80 wt%. The best use range is Between 25 and 65 wt%, it is composed of an inorganic material solution mainly composed of an inorganic material containing no alkyl group. The inorganic material solution is mainly a water glass solution containing sterol group (Si-OH), water glass. The solution may comprise a single or multi-molecular aqueous solution of SiO ₃ ² present in M ⁺ /OH ^- which is solution and mixed with at least one phosphor to form an inorganic phosphor material.

According to the above technical feature, the formulation of the inorganic material further comprises a cerium sol comprising cerium oxide (SiO ₂ ) and water, and the cerium oxide content of the cerium sol is 10 to 70% by weight. The preferred range is between 30 and 60% by weight.

The invention further discloses a formulation composition of an inorganic fluorescent material, comprising at least an inorganic material and a phosphor powder; wherein the inorganic material comprises ceria and water, cerium oxide (SiO ₂ ) and water form a cerium sol, The weight percentage of the cerium oxide content in the cerium sol is from 10 to 70% by weight, preferably from 30 to 60% by weight.

The invention further discloses an inorganic fluorescent material comprising at least one inorganic material and a phosphor powder; wherein the inorganic material comprises monocaprate or ceria; wherein the chemical formula of the citrate is: M ₂ O•nSiO ₂ , wherein the M series is selected from one of potassium, sodium or lithium, which may comprise a single molecule or a plurality of bases of SiO ₃ ^2- present in M ⁺ /OH ^- Aqueous solution, n is between 0.5 and 7.

The inorganic fluorescent material of the invention can have good adhesion strength after curing, and high transparency, temperature resistance, thermal conductivity, insulation and chemical stability of the general glass material; It can produce various shapes and thicknesses according to different optical requirements at temperatures lower than the normal low-temperature sintering (600 ° C ~ 800 ° C), not only will not make the efficiency or characteristics of the fluorescent powder decline, and help to expand the firefly The choice of light powder can even greatly reduce the cost of cutting and grinding after curing.

The weight percentage of the inorganic material in the inorganic fluorescent material may be between 2 and 70% by weight, and the preferred range is between 5 and 50% by weight, and the weight percentage of the fluorescent powder may be between 30 and 98% by weight. The preferred range is between 50 and 95% by weight.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one high refractive index material in the inorganic material solution, and the high refractive index material may be a micro or nano grade high refractive index RI>1.6 (Refractive Index) Materials such as zirconia (ZrO ₂ ), titanium oxide (TiO ₂ ) and other metal oxide powders are used to enhance the overall luminous efficiency.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one micro or nano-scale high thermal conductivity material (heat transfer coefficient > 10 W/mK), such as aluminum nitride (AlN) or Boron nitride (BN) powder and the like.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one anti-precipitating agent in the inorganic material solution, wherein the anti-precipitant content in the inorganic material is between 0.00001 and 10 wt%, and the anti-precipitant may be Rice grade cerium oxide (SiO ₂ ) is used to increase the colloidal viscosity, which helps to evenly disperse the phosphor powder before hardening.

According to the above technical feature, the inorganic fluorescent material may mix at least one high refractive index material and at least one high thermal conductive material in the inorganic material solution to increase the overall heat transfer coefficient.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one high refractive index material and at least one anti-precipitating agent in the inorganic material solution.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one highly thermally conductive material and at least one anti-precipitating agent in the inorganic material solution.

According to the above technical feature, the inorganic fluorescent material may be mixed with at least one high refractive index material, and at least one highly thermally conductive material, and at least one anti-precipitating agent in the inorganic material solution.

The invention further discloses a method for preparing a formulation of an inorganic fluorescent material, comprising the steps of: (a) preparing an inorganic material, a phosphor powder and water, wherein the inorganic material is selected from the group consisting of bismuth citrate or a cerium sol, or a mixture of cerate and cerium sol having a chemical formula of M ₂ O•nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium. It may comprise an alkaline aqueous solution of single or multi-molecular SiO ₃ ^2- present in M ⁺ /OH ^- , n is between 0.5 and 7, and the optimum range of use is between 1.5 and 6; b) blending, stirring the inorganic material and water to uniformly mix into an inorganic material solution, and the content of water (H ₂ O) in the inorganic material is between 10 and 95% by weight, generally water (H ₂ O) The content by weight (wt%) may be between 10 and 95 wt%, the better industrial application is between 20 and 80 wt%, and the best use range is between 25 and 65 wt%, and the phosphor powder is blended. Into the inorganic material solution, and stirred and mixed under appropriate environmental conditions, so that the entire fluorescent powder is evenly distributed in the inorganic material Solution to form the inorganic fluorescent material, inorganic fluorescent material powder in a weight percentage of phosphor is between 30 ~ 98wt%, or preferably range between 50 ~ 95wt%.

The invention further discloses a method for manufacturing an inorganic fluorescent material, comprising the steps of: (a) preparing an inorganic material, a phosphor powder and water, wherein the inorganic material is selected from the group consisting of a citrate or a cerium sol. Or a mixture of a citrate and a cerium sol having a chemical formula of M ₂ O•nSiO ₂ , wherein the M group is selected from one of potassium, sodium or lithium, which may comprise Single or multi-molecular SiO ₃ ^{2- is} present in an alkaline aqueous solution of M ⁺ /OH ^- , n is between 0.5 and 7, and the optimum range of use is between 1.5 and 6; (b) blending The inorganic material and water are stirred to uniformly mix into an inorganic material solution, and the content of water (H ₂ O) in the inorganic material is between 10 and 95% by weight, and generally the weight of water (H ₂ O). The percentage (wt%) can be between 10 and 95 wt%, the better industrial application is between 20 and 80 wt%, and the best use range is between 25 and 65 wt%. The phosphor powder is incorporated into the inorganic material. Mixing in a solution and under appropriate environmental conditions to uniformly distribute the entire phosphor powder in the inorganic material solution Inorganic fluorescent material, the fluorescent powder in the inorganic fluorescent material is between 30 and 98 wt%, or preferably in the range of 50 to 95 wt%; (c) molding, the mixed solution, The shape is then hardened in an appropriate shape.

According to the above technical feature, the inorganic phosphor material manufacturing method may further incorporate at least one high refractive index material into the inorganic material solution at a weight percentage of between 0.0001 and 30 wt%, or a better range. The mixture is mixed between 0.0001 and 10% by weight and under appropriate environmental conditions to uniformly distribute the total phosphor powder and the total high refractive index material in the inorganic material solution.

According to the above technical feature, the inorganic phosphor material manufacturing method may further incorporate at least one high thermal conductive material into the inorganic material solution at a weight percentage of between 2 and 70 wt%, and the preferred range is Between 5 and 40% by weight, and stirring and mixing under appropriate environmental conditions, the whole fluorescent powder and all the high thermal conductive materials are evenly distributed in the inorganic material solution.

According to the above technical feature, the inorganic phosphor material manufacturing method may further comprise at least one anti-precipitating agent in the inorganic material solution, wherein the inorganic material has an anti-precipitant content percentage of 0.01 to 10 wt%. The preferred range is between 0.05 and 6 wt%. According to the above technical feature, the inorganic phosphor material manufacturing method may further incorporate at least one high refractive index material and at least one high thermal conductive material into the inorganic material solution, and stir and mix to make all the fluorescent powders, all The high refractive index material and all of the high thermal conductive material are uniformly distributed in the inorganic material solution.

According to the above technical feature, the inorganic fluorescent material manufacturing method may further incorporate at least one high refractive index material and at least one anti-precipitating agent into the inorganic material solution, and stir and mix to make all the fluorescent powders, all The high refractive index material and the total anti-precipitant are evenly distributed in the inorganic material solution, and are stirred and mixed to uniformly distribute the total fluorescent powder, the total high refractive index material and the total anti-precipitant in the inorganic material solution.

According to the above technical feature, the inorganic fluorescent material manufacturing method may further incorporate at least one high thermal conductive material and at least one anti-precipitating agent into the inorganic material solution, and stir and mix, so that all the fluorescent powders are all high. The thermally conductive material and the total anti-precipitant are evenly distributed in the inorganic material solution.

According to the above technical feature, the inorganic fluorescent material manufacturing method may further incorporate at least one high refractive index material and at least one high thermal conductive material and at least one anti-precipitating agent into the inorganic material solution, and stir and mix, so that All of the phosphor powder, all of the high refractive index materials and all of the high thermal conductivity materials and all of the anti-precipitant are evenly distributed in the inorganic material solution.

The method for producing the inorganic fluorescent material is carried out by adjusting the phosphor powder and the inorganic material solution at an operating temperature lower than 500 degrees Celsius, or more preferably 400 ° C or lower.

The method for producing the inorganic fluorescent material is an anti-reflective coating for improving the light transmittance of the fluorescent layer. The anti-reflective coating is applied to any surface of the inorganic fluorescent material of any shape, and the anti-reflective coating may be silver (Ag), or aluminum (Al), or chromium (Cr), or Copper (Cu), or titanium (Ti) and other metal coatings. The anti-reflective coating can increase the transmittance of the glass material by 2 to 10%, such as silver (Ag), or aluminum (Al), or chromium (Cr), or copper (Cu), or titanium (Ti). Wait for a metal coating.

The invention further discloses a light-emitting diode element which is disposed on the upper or periphery of the light-emitting diode die provided thereon, and the adhesive cover is provided with at least one coating material which is firstly coated by the inorganic fluorescent material. A molded phosphor layer or a fluorescent cover, a fluorescent layer or a fluorescent cover is adhesively covered with a light-emitting diode element.

The invention further discloses a light-emitting diode element, wherein the light-emitting diode element is directly contacted with at least one layer of the uncured inorganic fluorescent material and the inorganic fluorescent material on the outer surface of the light-emitting diode. The glue injection method is adhered to the outer surface of the light-emitting diode to form a package, and then directly formed on the light-emitting diode die by direct curing.

The invention further discloses a light-emitting diode element having a light-transmitting lens covering the light-emitting diode crystal grains disposed thereon, and covering at least one layer on the outer surface of the light-transmitting lens The inorganic fluorescent material of any of the above types is first cured by a curing of the phosphor layer.

The invention further discloses an optical component having a carrier plate and a fluorescent layer and a laser light source, wherein the optical component is coated on a carrier plate and at least one layer is dried and hardened by the inorganic fluorescent material. a shaped phosphor layer, the inorganic phosphor material comprising at least an inorganic material and a phosphor powder; wherein the inorganic material comprises monocaprate or ceria; wherein the chemical formula of the niobate is: M ₂ O•nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, and n is between 0.5 and 7.

The carrier plate may be made of ceramic or metal and irradiated by laser to excite the phosphor layer to achieve a light conversion effect.

The inorganic fluorescent material disclosed in the present invention can complete various shapes and thicknesses according to different optical requirements at a temperature lower than normal low temperature sintering (600 ° C ~ 800 ° C), not only does not make the efficiency of the fluorescent powder. Or the characteristic decline, and help to expand the choice of phosphor powder, and even greatly reduce the cost of cutting and grinding after hardening; in particular, it can have good adhesion strength, and high transparency and thermal conductivity possessed by general glass materials. , insulation and chemical stability. Applied to products such as light-emitting diode components or optical components (lenses), not only can ensure the quality of its products, but also effectively improve the service life of the products; even when manufacturing the inorganic fluorescent materials, the recycled products are not The good product can effectively increase the recovery rate of the fluorescent powder under the use of a suitable solution.

The inorganic fluorescent material of the present invention is composed of at least one inorganic material and one fluorescent powder; the inorganic material has a formula further comprising water;

The inorganic material comprises a bismuth salt; wherein the bismuth hydride has the chemical formula: M ₂ O·nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, n is Between 0.5 and 7, the best range of use is between 1.5 and 6, and the content of water (H ₂ O) in the inorganic material is between 10 and 95% by weight, which is a good industrial application. Between 20~80wt%, the best use range is between 25~65wt%.

The bismuth citrate and the water system constitute an inorganic material solution mainly composed of an inorganic material containing no alkyl group, and the inorganic material solution is mainly a water glass solution containing sterol group (Si-OH), and the water glass solution can be An aqueous alkaline solution containing single or multi-molecular SiO ₃ ² present in M ⁺ /OH ^- is contained, and the inorganic material solution is mixed with at least one fluorescent powder.

Further, the formulation of the inorganic material further comprises a cerium sol comprising cerium oxide (SiO ₂ ) and water, and the cerium oxide content of the cerium sol is from 10 to 70% by weight, preferably in a range It is between 30 and 60% by weight.

The inorganic fluorescent material of the present invention is composed of at least one inorganic material and a phosphor powder; wherein the inorganic material comprises ceria and water, ceria (SiO ₂ ) and water form a cerium sol, The weight percentage of the cerium oxide content in the cerium sol is from 10 to 70% by weight, preferably from 30 to 60% by weight.

Another inorganic fluorescent material of the present invention comprises at least an inorganic material and a phosphor; wherein the inorganic material comprises monocaprate or ceria; wherein the chemical formula of the citrate is: M ₂ O•nSiO ₂ , wherein the M series is selected from one of potassium, sodium or lithium, which may comprise a single molecule or a plurality of bases of SiO ₃ ^2- present in M ⁺ /OH ^- Aqueous solution, n is between 0.5 and 7.

The weight percentage of the inorganic material in the inorganic fluorescent material may be between 2 and 70% by weight, and the preferred range is between 5 and 50% by weight, and the weight percentage of the fluorescent powder may be between 30 and 98% by weight. The preferred range is between 50 and 95% by weight.

Further, the inorganic fluorescent material of the present invention may be mixed with at least one high refractive index material in the inorganic material solution, and the high refractive index material may be a micron or nano-high refractive index RI>1.6 (Refractive Index) material, such as Metal oxide powders such as zirconium oxide (ZrO ₂ ), titanium oxide (TiO ₂ ), etc., to enhance the overall luminous efficiency.

Further, the inorganic fluorescent material of the present invention may mix at least one micro or nano-scale high thermal conductivity material (heat transfer coefficient > 10 W/mK), such as aluminum nitride (AlN) or boron nitride, in the inorganic material solution. (BN) powder and the like.

Further, the inorganic fluorescent material of the present invention may be mixed with at least one anti-precipitating agent in the inorganic material solution, wherein the inorganic material has an anti-precipitant content of between 0.00001 and 10% by weight, and the anti-precipitant may be of nanometer two. Cerium oxide (SiO ₂ ) is used to increase the colloidal viscosity, which contributes to the uniform dispersion of the phosphor powder before hardening.

Further, the inorganic fluorescent material of the present invention may mix at least one high refractive index material and at least one high thermal conductive material in the inorganic material solution to increase the overall heat transfer coefficient. Alternatively, the inorganic phosphor material may be mixed with at least one high refractive index material, and at least one anti-precipitant agent in the inorganic material solution. Alternatively, the inorganic phosphor material may be mixed with at least one highly thermally conductive material, and at least one anti-precipitating agent, in the solution of the inorganic material.

In principle, the inorganic fluorescent material of the present invention can simply control the viscosity and operability of the entire inorganic fluorescent material by changing the coefficient n of the chemical formula of the inorganic material solution for use in accordance with its actual use. Demand, and in practical applications, can be accelerated or slowed by moisture removal by acidic or alcohol chemical reaction processes to achieve stable shape control.

Draping or molding, due to the inorganic fluorescent material of the present invention, after drying and hardening setting, it can have good adhesion strength, and high transparency, thermal conductivity, insulation and chemical stability possessed by general glass materials. For the coating or forming operation of products such as light-emitting diode elements or optical components (lenses), and the products or defective products recovered after the manufacturing process, they can be reused under appropriate solutions and operating conditions.

According to different optical requirements at low temperature or below 300 ° C, various shapes and thicknesses are produced. The second stage hardening temperature does not exceed 500 ° C, which not only does not make the efficiency or characteristics of the phosphor powder decline. Therefore, it helps to expand the choice of phosphor powder, and even saves the cutting and grinding costs after hardening and setting.

The present invention further mixes at least one high refractive index material in the inorganic material solution to increase the light extraction rate thereof, wherein the high refractive index material in the inorganic material material is between 0.0001% and 30% by weight, or preferably 0.0001% by weight. Between ~10wt%, and under suitable environmental conditions, the mixture is stirred to uniformly distribute the total phosphor powder and the total high refractive index material in the inorganic material solution to enhance the overall light extraction rate.

In addition, the inorganic material comprises at least one highly thermally conductive material, wherein the high thermal conductive material is between 2 and 70 wt% by weight, or preferably between 5 and 40 wt%, and in a suitable environment. Stir and mix evenly under conditions, so that all the fluorescent powder and all the high thermal conductive materials are evenly distributed in the inorganic material solution to improve the heat dissipation efficiency.

In addition, the inorganic material comprises at least one anti-precipitant agent, wherein the inorganic material has an anti-precipitant content of between 0.01 and 10 wt%, and a preferred range is between 0.05 and 6 wt%, and the anti-precipitant can be It is nano-sized cerium oxide (SiO ₂ ) to increase the colloidal viscosity, which helps to evenly disperse the phosphor before hardening.

Further, the inorganic material comprises at least one high refractive index material, and at least one highly thermally conductive material; even, the inorganic material comprises at least one high refractive index material, and at least one anti-precipitant; and even the inorganic material comprises At least one highly thermally conductive material, and at least one anti-precipitating agent; even, the inorganic material comprises at least one high refractive index material, and a highly thermally conductive material, and at least one anti-precipitating agent.

In implementation, the at least one high refractive index material, the high refractive index material may be a micron or nanometer high material, and the refractive index may be between RI>1.6, such as zirconia (ZrO ₂ ), titanium oxide (TiO _{2 )} ) Metal oxide powders are used to increase the overall light extraction rate. As a result, the at least one high thermal conductive material content is between 2 and 70 wt%, the high thermal conductive material may be a micro or nano high thermal conductive material, the thermal conductivity is >10 W/mK, and the high thermal conductive material 14 may be aluminum nitride ( AlN) or boron nitride (BN).

Please refer to FIG. 1 and FIG. 2 together, and the manufacturing method of the composition of the inorganic fluorescent material of the present invention includes the following steps:

(a) preparing an inorganic material and a phosphor powder 12 and water, wherein the inorganic material is selected from the group consisting of a citrate or a cerium sol, or a mixture of a cerate and a cerium sol. The formula is: M ₂ O•nSiO ₂ , and the M series in the chemical formula is one selected from the group consisting of potassium, sodium or lithium, which may comprise a monomolecular or multimolecular SiO ₃ ^2- present in M ⁺ /OH ^- In the alkaline aqueous solution, n is between 0.5 and 7, and the optimum range is between 1.5 and 6.

(b) blending, first stirring the inorganic material and water to uniformly mix into an inorganic material solution 11, wherein the content of water (H ₂ O) in the inorganic material is between 10 and 95% by weight, generally water ( The H ₂ O) content by weight (wt%) may be between 10 and 95 wt%, the better industrial application is between 20 and 80 wt%, and the optimal use range is between 25 and 65 wt%. The phosphor powder is incorporated into the inorganic material solution 11 and can be stirred in an environmental condition at room temperature or below an operating temperature of 50 ° C to uniformly distribute the entire phosphor powder 12 in the inorganic material solution 11 . And forming an inorganic fluorescent material solution, the inorganic material in the inorganic fluorescent material comprises water in a weight percentage of between 2% and 70% by weight, and the fluorescent powder is in a weight percentage of between 30% and 98% by weight, or a preferred range Between 50~95wt%.

In addition, referring to FIGS. 2 and 3, the method for manufacturing another inorganic fluorescent material of the present invention includes the following steps:

(a) preparing an inorganic material and a phosphor powder and water, wherein the inorganic material is selected from the group consisting of a citrate or a cerium sol, or a mixture of a cerate and a cerium sol, the chemical formula of the cerate Is: M ₂ O•nSiO ₂ , the M series in the chemical formula is selected from one of potassium, sodium or lithium, which may comprise single or multi-molecular SiO ₃ ^2- present in M ⁺ /OH ^- The alkaline aqueous solution, n is between 0.5 and 7, and the best use range is between 1.5 and 6. ;

(b) blending, first stirring the inorganic material and water to uniformly mix into an inorganic material solution 11, wherein the content of water (H ₂ O) in the inorganic material is between 10 and 95% by weight, preferably Industrial application is between 20~80wt%, the best use range is between 25~65wt%, then the phosphor powder 12 is incorporated into the inorganic material solution, and can be used at ambient temperature or below Celsius. The mixing of the working temperature at a working temperature of 50 ° C causes the entire phosphor powder 12 to be uniformly distributed in the inorganic material solution 11 to form an inorganic fluorescent material solution. The inorganic material in the inorganic fluorescent material contains water in a weight percentage of 2 Between ~70% by weight, the phosphor powder is between 30 and 98% by weight, or preferably between 50 and 95% by weight.

(c) Forming, uniformly tempering the inorganic phosphor material solution, and then forming and hardening in an appropriate shape.

Further, in the method for producing a composition of the above inorganic fluorescent material and the method for producing an inorganic fluorescent material, the inorganic material may be composed of the silicate and water, and a silicate-based (Si-OH) water glass. a solution which may comprise a single or multi-molecular SiO ₃ ^2- -based aqueous alkaline solution present in M ⁺ /OH ^- , which is solidified by drying and condensation to form a three-dimensional oxime (Si-O) -Si) type.

Further, in the method for producing a composition of the inorganic fluorescent material and the method for producing an inorganic fluorescent material, the inorganic material may be a cerium sol mainly containing a sterol group (Si-OH), and the cerium sol comprises Cerium oxide (SiO ₂ ) and water may contain a colloidal solution of nano SiO ₂ dispersed in water, commonly known as sputum sol or silicate gel (Silica Sol. or Colloidal Silica); SiO ₂ content by weight (wt%) may be It is 10 to 70% by weight, and preferably 30 to 60% by weight.

Further, as shown in FIG. 4, the inorganic material solution 11 is doped with at least one high refractive index material 13 to increase its light extraction rate, and the high refractive index material 13 of the inorganic material material is between 0.0001 and 30% by weight in weight percentage. Or, preferably, between 0.0001 and 10% by weight, and stirred and mixed under appropriate environmental conditions to uniformly distribute the total phosphor powder 12 and the total high refractive index material 13 in the inorganic material solution for Improve overall light output.

Further, as shown in FIG. 5, the inorganic material solution 11 is doped with at least one highly thermally conductive material 14 in which the high thermal conductive material 14 is between 2 and 70% by weight, or preferably in a range of Between 5 and 40 wt%, and under appropriate environmental conditions, the mixture is uniformly mixed, so that the entire phosphor powder 12 and all the high thermal conductive materials 14 are uniformly distributed in the inorganic material solution 11 to improve the heat dissipation efficiency.

Further, as shown in FIG. 6, the inorganic material solution 11 is doped with at least one anti-precipitant agent 15, and the content of the anti-precipitant agent 15 in the inorganic material is between 0.01 and 10% by weight, and the preferred range is Between 0.05 and 6 wt%, the anti-precipitant 15 can be nano-sized cerium oxide (SiO ₂ ) to increase the colloidal viscosity, which contributes to the uniform dispersion of the phosphor powder 12 before hardening.

Of course, as shown in FIG. 7, at least one high refractive index material 13 and at least one high thermal conductive material 14 may be further mixed in the inorganic material solution 11, and the inorganic material solution 11 is stirred and stirred to make the whole fluorescent powder. 12. The total number of high refractive index materials 13 and all of the high thermal conductivity materials 14 are uniformly mixed in the inorganic material solution.

Of course, as shown in FIG. 8, at least one high refractive index material 13 and at least one anti-precipitation agent 15 may be further mixed in the inorganic material solution 11, and stirred and mixed to make all the fluorescent powders 12 and all the high refractive indexes. The rate material 13 and the total anti-precipitant 15 are uniformly distributed in the inorganic material solution 11.

Of course, as shown in FIG. 9, at least one high thermal conductive material 14 and at least one anti-precipitation agent 15 may be further mixed in the inorganic material solution 11, and stirred and mixed to make all the fluorescent powders 12 and all the high thermal conductive materials. 14 and all of the anti-precipitation agent 15 are uniformly distributed in the inorganic material solution 11.

Of course, as shown in FIG. 10, at least one high refractive index material 13 and a high thermal conductive material 14 and at least one anti-precipitation agent 15 may be further mixed in the inorganic material solution 11, and stirred and mixed to make full fluorescence. The powder 12, all of the high refractive index material 13 and all of the high thermal conductive material 14 and the total anti-precipitant 15 are uniformly distributed in the inorganic material solution 11.

Of course, as shown in FIG. 11, anti-reflective coating may be further applied to improve the light transmittance of the fluorescent material. The anti-reflective coating is applied to the inorganic fluorescent material of any of the above shapes to form a fluorescent layer 10B, and the anti-reflective coating 16 is coated on any surface of the fluorescent layer 10 B. The anti-reflective coating 16 may be silver ( Ag), or aluminum (Al), or chromium (Cr), or copper (Cu), or titanium (Ti) and other metal coatings. The anti-reflective coating can increase the transmittance of the glass material by 2 to 10%, such as silver (Ag), or aluminum (Al), or chromium (Cr), or copper (Cu), or titanium (Ti). Wait for a metal coating.

The present invention further discloses a light-emitting diode element 20 which is coated on an upper or periphery of a light-emitting diode die 21 provided with an inorganic fluorescent material, wherein the inorganic material comprises a tannic acid a salt and a phosphor or ceria and a phosphor, the chemical formula of the bismuth salt is: M ₂ O•nSiO ₂ , wherein the M system is selected from the group consisting of potassium, sodium or lithium. In one case, n is between 0.5 and 7, and the inorganic phosphor material is first cured by the curing of the fluorescent layer 10B (as shown in Fig. 12) or the fluorescent cover 10C (as shown in Figs. 13 and 14). The light-emitting diode element 20 is covered by an adhesive manner.

In the above-mentioned light-emitting diode element 20, as shown in FIG. 15, the formulation of the inorganic fluorescent material is adhered to the outer surface of the light-emitting diode die 21 by a glue injection method, and between the phosphor sheets 23 An adhesive layer 10D is formed, and the adhesive layer 10D is disposed between the LED die 21 and the phosphor sheet 23, and is then subjected to direct curing to achieve adhesive bonding. In addition, the formulation of the inorganic phosphor material is adhered to the LED die 21 or one of the phosphors 23 by gelatinization. Further, the phosphor 26 can be a single wafer, or A glass fluorescent sheet, either an inorganic fluorescent sheet or a ceramic fluorescent sheet.

The present invention further discloses a light-emitting diode element. As shown in FIG. 16, the light-emitting diode element 20 is directly contacted with an inorganic firefly on the outer surface of the periphery of the light-emitting diode die 21 disposed thereon. The formulation of the optical material, wherein the composition of the inorganic phosphor material comprises bismuth citrate and water and a phosphor powder 12 or bismuth sol and a phosphor powder 12, and the chemical formula of the bismuth salt is: M ₂ O•nSiO ₂ , the M system of the chemical formula is selected from one of potassium, sodium or lithium, and n is between 0.5 and 7. The formulation of the inorganic fluorescent material is adhered by glue injection. A package body 10A is formed on the outer surface of the light-emitting diode die 21, and is then directly molded onto the light-emitting diode die 21 by direct curing.

The present invention further discloses a light-emitting diode element. As shown in FIG. 17, the light-emitting diode element 20 has a light-transmitting lens 22 covering the light-emitting diode die 21 disposed thereon. The outer surface of the light lens 22 is coated with at least one layer of the phosphor layer 10B which is formed by hardening the inorganic phosphor material.

As shown in FIG. 18, the present invention further discloses an optical component 30 having a carrier 31 and a fluorescent layer 32 and a laser source 33. The optical component 30 is attached to a carrier 31. At least one of the layers is coated with at least one phosphor layer 32 formed by drying and hardening the inorganic phosphor material; in practice, the inorganic phosphor material comprises at least an inorganic material and a phosphor; wherein the inorganic material comprises a bismuth citrate or ruthenium dioxide; wherein the ruthenium hydride has the chemical formula: M ₂ O•nSiO ₂ , wherein the M series is selected from one of potassium, sodium or lithium, n is Between 0.5 and 7, and the carrier 31 can be metal or glass. The optical component 30 made of the inorganic fluorescent material can generate the desired optics by laser excitation of the phosphor. effect.

Compared with the conventional conventional technology, the inorganic fluorescent material disclosed in the present invention can complete various shapes and thicknesses according to different optical requirements at a low temperature, and not only does not deteriorate the efficiency or characteristics of the fluorescent powder, and Helps to expand the choice and suitability of phosphor powder, and even saves the cost of cutting and grinding after hardening and setting; in particular, it can have good adhesion strength, and high transparency, thermal conductivity and insulation of general glass materials. Sex and chemical stability, can be applied to products such as light-emitting diode components or optical components (lens), and the recycled products or defective products in the manufacturing process can be reused under appropriate solutions and operating conditions. Effectively improve the recovery rate of fluorescent powder, and achieve the effect of reducing costs. Furthermore, it provides a highly transparent, high heat-resistant all-inorganic fluorescent material which is more competitive in mass production, which will help to improve the current temperature limit of white LEDs, and its manufacturing technology can also improve the selection and application of fluorescent powder. And the application method and product characteristics of the fluorescent layer material in white LEDs.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.

10A‧‧‧Package
10B‧‧‧Fluorescent layer
10C‧‧‧Flame cover
10D‧‧‧Adhesive layer
11‧‧‧Inorganic material solution
12‧‧‧Fluorescent powder
13‧‧‧High refractive index material
14‧‧‧High thermal conductivity material
15‧‧‧Anti-precipitant
16‧‧‧Anti-reflective coating
20‧‧‧Lighting diode components
21‧‧‧Light-emitting diode grains
22‧‧‧Lighting lens
23‧‧‧Fluorescent film
30‧‧‧Optical components
31‧‧‧ Carrier Board
32‧‧‧Fluorescent layer
33‧‧‧Laser light source

Fig. 1 is a schematic view showing the structure of an inorganic fluorescent material according to a first embodiment of the present invention. Fig. 2 is a schematic view showing the structure of an inorganic fluorescent material according to a second embodiment of the present invention. Fig. 3 is a schematic view showing the structure of an inorganic fluorescent material according to a third embodiment of the present invention. Figure 4 is a schematic view showing the structure of an inorganic fluorescent material according to a fourth embodiment of the present invention. Figure 5 is a basic flow chart of the method for producing an inorganic fluorescent material of the present invention. Figure 6 is a schematic view showing the structure of the light-emitting diode element of the present invention. Figure 7 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 8 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 9 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 10 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 11 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 12 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 13 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 14 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 15 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 16 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 17 is a schematic view showing the structure of another light-emitting diode element of the present invention. Figure 18 is a schematic view showing the structure of the optical component of the present invention.

no

no

11‧‧‧Inorganic material solution

12‧‧‧Fluorescent powder

Claims (19)

An inorganic fluorescent material having a formulation comprising at least one inorganic material and a phosphor; wherein the inorganic material composition further comprises water; wherein the inorganic material comprises monocaprate; wherein the niobate The chemical formula is: M ₂ O·nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, n is between 0.5 and 7; and the content of water in the inorganic material The system is between 10% and 95% by weight. The formulation of the inorganic fluorescent material according to claim 1, wherein the formulation of the inorganic material further comprises a cerium sol comprising cerium oxide (SiO ₂ ) and water, and the cerium oxide in the cerium sol The content by weight is between 10 and 70% by weight. An inorganic fluorescent material having a formulation comprising at least an inorganic material and a phosphor; wherein the inorganic material comprises ceria and water, ceria (SiO ₂ ) and water form a cerium sol, the cerium The weight percentage of the cerium oxide content in the sol is from 10 to 70% by weight. The composition of the inorganic fluorescent material according to any one of claims 1 to 3, wherein the inorganic material comprises a weight percentage of water of between 2 and 70% by weight, the phosphor powder The weight percentage is between 30 and 98% by weight. An inorganic fluorescent material comprising at least an inorganic material and a phosphor; wherein the inorganic material comprises monocaprate or ceria; wherein the chemical formula of the citrate is: M ₂ O• nSiO ₂ , the M system of the chemical formula is selected from one of potassium, sodium or lithium, and n is between 0.5 and 7. The inorganic fluorescent material according to claim 5, wherein the inorganic fluorescent material has a weight percentage of the inorganic material of between 2% and 70% by weight, and the weight of the fluorescent powder (12) is between 30%. Between 98wt%. The inorganic fluorescent material according to claim 5 or 6, wherein the inorganic material has a cerium oxide (SiO ₂ ) content of 10 to 70% by weight. The invention relates to a method for preparing a composition of an inorganic fluorescent material, comprising the steps of: (a) preparing an inorganic material, a phosphor powder (12) and water, wherein the inorganic material is selected from the group consisting of niobium or tantalum. a sol, or a mixture of a cerate and a cerium sol having a chemical formula of M ₂ O•nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, n It is between 0.5 and 7; (b) blending, the inorganic material and the phosphor powder (12) and water are stirred to uniformly mix into an inorganic fluorescent material solution. The method for producing a composition of an inorganic fluorescent material according to claim 8, wherein the inorganic material comprises a weight percentage of water of between 2 and 70% by weight, and the weight percentage of the fluorescent powder. The system is between 30 and 98 wt%. The method for producing a composition of an inorganic fluorescent material according to claim 8 or 9, wherein the cerium sol comprises cerium oxide (SiO ₂ ) and water, and the weight percentage of cerium oxide in the cerium sol is 10 to 70% by weight. A method for producing an inorganic fluorescent material, comprising the steps of: (a) preparing an inorganic material and a phosphor (12) and water, wherein the inorganic material is selected from a silicate or a cerium sol, or a mixture of citrate and bismuth sol having a chemical formula of M ₂ O•nSiO ₂ , wherein the M system is selected from one of potassium, sodium or lithium, and n is (b) blending, mixing the inorganic material and the phosphor powder and water to uniformly mix into an inorganic fluorescent material solution; (c) molding, the inorganic fluorescent material solution, and then the appropriate shape Form hardening. The method for producing an inorganic fluorescent material according to claim 11, wherein the inorganic material comprises a weight percentage of water of between 2% and 70% by weight, and the weight percentage of the fluorescent powder is between Between 30 and 98 wt%. The method for producing an inorganic fluorescent material according to claim 11 or 12, wherein the cerium sol comprises cerium oxide (SiO ₂ ) and water, and the cerium oxide content in the cerium sol is from 10 to 70% by weight. A light-emitting diode element (20) covering at least a portion of a periphery of a periphery of a light-emitting diode (21) provided with an inorganic fluorescent material, wherein the inorganic The fluorescent material comprises a bismuth citrate and a phosphor powder or cerium oxide and a phosphor powder. The bismuth hydride has the chemical formula: M ₂ O•nSiO ₂ , and the M series in the chemical formula is selected from the group consisting of One of potassium, sodium or lithium, n is between 0.5 and 7. The light-emitting diode element according to claim 14, wherein the inorganic phosphor material is first hardened to form a phosphor layer (10B) or a phosphor mask (10C), or the phosphor layer (10B) or The luminescent cover (10C) is adhesively disposed on at least a portion of the light emitting diode die (21). A light-emitting diode element (20), the light-emitting diode element (20) is composed of a formulation of at least a portion of a periphery of a light-emitting diode die (21) disposed thereon, covered with an inorganic fluorescent material, wherein The inorganic fluorescent material has a formula comprising a citrate and water, a phosphor powder or a cerium sol, and a phosphor powder. The chemical formula of the bismuth salt is: M ₂ O•nSiO ₂ , the chemical formula The M line is selected from one of potassium, sodium or lithium, and n is between 0.5 and 7. The light-emitting diode component of claim 16, wherein the formulation of the inorganic phosphor material is adhesively adhered to the outer surface of the light-emitting diode (21) to form a package (10A). It is then directly molded onto the light-emitting diode grains (21) by direct curing. The light-emitting diode component of claim 16, wherein the inorganic fluorescent material is formulated to adhere to the outer surface of the light-emitting diode (21) by a glue injection method, and a fluorescent sheet (23) An adhesive layer (10D) is formed between the adhesive layer (10D), and the light-emitting diode (21) and the fluorescent sheet (23) are adhesively bonded by direct curing. An optical component (30) having a carrier (31) and a phosphor layer (32) and a laser source (33), the optical component (30) being attached to a carrier ( 31) coating at least one fluorescent layer (32) formed by drying and hardening the inorganic fluorescent material, the inorganic fluorescent material comprising at least an inorganic material and a phosphor; wherein the inorganic material comprises a crucible An acid salt or cerium oxide; wherein the ceric acid salt has a chemical formula of M ₂ O•nSiO ₂ , and the M system of the chemical formula is selected from one of potassium, sodium or lithium, and n is Between 0.5 and 7.