CN201069102Y - Passive light-emitting module capable of generating visible light through ultraviolet excitation - Google Patents

Abstract

The utility model relates to a light-emitting module which is excited by passive ultraviolet light to generate visible light, wherein the module is provided with an excitation light source body and at least more than one layer of wavelength modulation base body; the exciting light source body generates ultraviolet light in a specific wavelength range, the wavelength modulation base body takes organic macromolecules as a carrier, composite materials comprising organic wavelength modulation materials, quantum dot fluorescence color-developing materials and nano-particle fluorescence intensifying powder are added into the carrier, the composite materials are solidified and formed in a glue injection molding, ejection molding, thin film, screen printing or thick film printing mode, and the wavelength modulation base body and the exciting light source body keep a proper distance, so that when the wavelength modulation base body is irradiated by the ultraviolet light beams emitted by the exciting light source body, visible light can be generated.

Description

A light-emitting module that generates visible light by passive ultraviolet light excitation

technical field

The utility model relates to a light-emitting module that is excited by passive ultraviolet light to generate visible light, in particular to a light-emitting module that can generate visible light when UV LEDs, sunlight or other light sources that can generate ultraviolet light are used as excitation light sources.

Background technique

In recent years, white light-emitting diodes (LEDs) are the most promising emerging products that have attracted worldwide attention. They have the advantages of small size, no heat radiation, low power consumption, long life and good response speed, etc., and can solve the problems of the past. Incandescent bulbs are difficult to overcome. At the same time, many economically developed countries in the world, such as Europe, America, Japan, etc., based on the consensus of energy conservation and environmental protection, regard white light-emitting diodes as important new light sources in the 21st century.

At present, there are mainly two ways for light-emitting diodes to emit white light. One is single crystal type, which is the same as the light-emitting method of fluorescent lamps, that is, blue light is added with yellow phosphor powder or ultraviolet light diode (hereinafter referred to as UV LED). RGB three-wavelength phosphors are used to produce white light; the other is polymorphism, which uses complementary two or three primary colors to mix light to form white light. If the polycrystalline method is used, the driving voltage, luminous output, temperature characteristics and lifespan of different LEDs are different, so there will be many factors that need to be controlled when using this method, and the cost will be higher; if With the single crystal type, only one element is needed, and the design of the driving circuit will be easier. Therefore, most manufacturers currently prefer to use the single crystal type for research and development.

And because of the single-crystal light-emitting method, it covers the phosphor powder on the LED. When the phosphor powder is excited by the excitation beam emitted by the LED, it will be excited to emit light beams. At the same time, when the phosphor powder emitted by the LED is not excited by the phosphor powder The absorbed remaining excitation beam is mixed with the beam excited by the phosphor to form white light.

Due to the above-mentioned way of generating white light, the fluorescent powder is coated on the LED or directly in contact with the LED, and then the power is activated to drive the LED to generate a light source. Therefore, when the illuminance of visible light is insufficient in some environments, although there are ultraviolet rays in the environment Light, but still needs to rely on electricity to shine, such as: night, indoors, etc., so there are still shortcomings in use.

Utility model content

One purpose of the present utility model is mainly to keep an appropriate distance between the excitation light source body and the wavelength modulation substrate with wavelength conversion.

Another object of the present invention is that in an environment with ultraviolet light, when the wavelength modulation substrate is irradiated, it can be excited to generate visible light.

Another object of the present utility model is to apply it to light sources of lighting devices, backlight modules and other equipment.

In order to achieve the above purpose, the technical means used are: organic polymer materials are used as carriers, and organic wavelength modulation materials, quantum dot fluorescent color-changing materials and nano-particle fluorescent brightening powders are added to form composite materials in the carrier. , and use glue injection molding, injection molding, thin film, screen printing or thick film printing curing molding to form a wavelength modulation matrix, and keep an appropriate distance between the wavelength modulation matrix and the excitation light source body, so that, When the wavelength modulation matrix receives UV LED, sunlight or other light sources that can generate ultraviolet light as the excitation light source, the matrix can be made to generate visible light.

Description of drawings

Fig. 1 is a schematic diagram of the decomposition section of the utility model applied to UV LED as the excitation light source body.

Fig. 2 is a schematic cross-sectional view of the combination of Fig. 1 .

Fig. 3 is an exploded cross-sectional schematic view of another embodiment in which the utility model is applied to a UV LED as an excitation light source.

FIG. 4 is a combined cross-sectional schematic diagram of FIG. 3 .

Fig. 5 is a schematic cross-sectional view of the ultraviolet light used as the excitation light source body of the utility model applied in the environment.

Fig. 6 is a schematic cross-sectional view of another embodiment of the utility model in which the ultraviolet light is used as the excitation light source in the environment.

Figure number:

Excitation light source body 10

Light guide module 11

Wavelength Modulating Matrix 12

Homogeneous film layer 13

Reflector 14

Detailed ways

In order to achieve the above object, the utility model adopts technical means and its effects. Now, a feasible embodiment is described in detail in conjunction with the drawings, so that the structure of the utility model is easier to understand.

Please refer to Fig. 1 and shown in Fig. 2, the utility model uses the UV LED that produces ultraviolet light as the embodiment of the excitation light source body and is used in a lighting device or a backlight module, and the module is provided with an excitation light source body 10 (in this embodiment) The wavelength range of the UV LED is 360-400nm), and a light guide module 11 is arranged adjacent to the excitation light source body 10, and the light guide module 11 transmits the light beam generated by the excitation light source body 10 to the outside (in this embodiment, it is The ultraviolet light generated by the excitation light source is not only transmitted in the horizontal direction, but also refracted at a specific angle), and the surface of the light guide module 11 is provided with at least one layer of wavelength modulation matrix 12, the wavelength modulation matrix 12 Use an organic polymer as a carrier, and add organic wavelength modulation materials, quantum dot fluorescence color change materials and nano-particle fluorescent brightening powder to form a composite material in the carrier; wherein the organic polymer is silica gel (Silicone), Optical polycarbonate (PC), optical acrylic (PMMA) or epoxy resin (Expoxy Resin), etc.; wherein the organic wavelength modulation material is: light emitting oligomeric fluorene compound (Light emitting Fluorene Oligomers), light exciting single Polymers (Light emitting Homopolymers) or light emitting copolymers (Light emitting Copolymers), etc.; wherein the quantum dot fluorescent color changing material is: Group III/V and Group II/VI semiconductors (such as: CdSe, PbSe, CdS and Core -Shell Quantum dots-CdSe/Zns, etc.); wherein the nano-particle fluorescent brightening powder is: oxide, sulfide, halogen calcium phosphate series, organic material or inorganic material.

In addition, the composite material that has been mixed and formulated is solidified and formed by glue injection molding, injection molding, film film, screen printing or thick film printing (the shape can be strip, sheet or column), or directly by screen printing or Thick-film printing is applied on the light guide module 11 , and a light-homogeneous thin film layer 13 with a uniformly diffused light beam can be pasted on the wavelength-modulating substrate 12 .

When in use, the excitation light source body 10 is driven by electricity to generate an ultraviolet beam, and then the excitation light beam generated by the excitation light source body 10 is irradiated to the wavelength modulation substrate 12 at a specific refraction angle through the light guide module 11, and the wavelength modulation substrate 12 Visible light can be formed when the organic wavelength modulation material, the quantum dot fluorescent color changing material and the nanoparticle fluorescent brightening powder receive the excitation light beam generated by the excitation light source body 10 .

Please refer to Fig. 3 and Fig. 4, which is another embodiment of the utility model that uses UV LED as the excitation light source for lighting or backlight modules, and it directly irradiates the wavelength of the ultraviolet light generated by the excitation light source body 10. Visible light can be formed when the organic wavelength modulating material, quantum dot fluorescent color changing material and nanoparticle fluorescent brightening powder on the substrate 12 receive the excitation beam generated by the excitation light source body 10 through the wavelength modulation substrate 12 .

See also Fig. 5, shown in Fig. 6, it is the embodiment (such as sunlight etc.) that the utility model utilizes other can emit ultraviolet light as exciting light source body, and it will excite light source body 10 (not shown in the figure) to produce The ultraviolet light is directly irradiated on the wavelength modulation substrate 12 (as shown in FIG. 5 ) or passes through the reflection effect of the reflection plate 14 arranged on the wavelength modulation substrate 12 and opposite to the excitation light source body 10 (as shown in FIG. 6 ). Visible light can be generated when the organic wavelength modulating material, quantum dot fluorescent color changing material and nanoparticle fluorescent brightening powder in the wavelength modulating matrix 12 receive the excitation beam from the excitation light source body 10 .

In summary, the utility model is the first utility model in terms of articles, shapes, structures, and devices, and can improve various shortcomings of the prior art, and can improve efficacy in use and is practical.

Claims (13)

1. the light emitting module of a passive type ultraviolet excitation generation visible light is characterized in that, the light emitting module of described passive type ultraviolet excitation generation visible light includes at least:

One excitation source body, it produces the ultraviolet light of particular range of wavelengths; And

At least one deck wavelength modulation matrix, itself and excitation source body keep suitable distance, and described wavelength modulation matrix is carrier with the organic polymer, also add in the described carrier and include organic wavelength modulation material, quantum dot fluorescence and drill tone and become material and the nano-particle fluorescence powder that adds lustre to and form composite, more described mixed composite is given curing molding;

Thus, when described wavelength modulation matrix is accepted the irradiation of ultraviolet light beam of excitation source body, and send the visible light of another wavelength.

2. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described wave-length coverage includes 360～400nm.

3. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described excitation source body is UV LED.

4. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described excitation source body is a solar source.

5. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described organic polymer is silica gel, optics polycarbonate, optics acryl or epoxy resin.

6. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that, described organic wavelength modulation material macromolecule is single polymers of optical excitation oligomerization fluorene compound, optical excitation or optical excitation copolymer.

7. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described quantum dot fluorescence is drilled tone change material and is CdSe or PbSe or CdS or Core-Shell Quantum dots-CdSe/ZnS or three/five families or two/six family's semiconductors.

8. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that, the described nano-particle fluorescence powder that adds lustre to is oxide, sulfide, halogen calcium phosphate row, organic material or inorganic material.

9. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that described wavelength modulation matrix forms shape or injection molding or film film or wire mark or the moulding of thick film screen printing mode with glue.

10. a kind of passive type ultraviolet excitation as claimed in claim 9 produces the light emitting module of visible light, it is characterized in that described wavelength modulation matrix includes strip or sheet or column.

11. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that, be provided with a light guide module being adjacent to excitation source body place, the light source that described light guide module is launched the excitation source body outwards transmits, and shine on wavelength modulation matrix, and described wavelength modulation matrix is coated curing molding on the light guide module with wire mark or in the thick film screen printing mode.

12. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that, pastes an equal optical thin film layer with even diffused light source on wavelength modulation matrix.

13. a kind of passive type ultraviolet excitation as claimed in claim 1 produces the light emitting module of visible light, it is characterized in that, be provided with a reflecting plate on wavelength modulation matrix and with ultraviolet light incident direction opposite location, described reflecting plate is gone out the beam reflection of ultraviolet source incident.

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