CN201717287U - Monochromatic source packaging structure with phosphor powder excitation chamber and projection optical engine - Google Patents
Monochromatic source packaging structure with phosphor powder excitation chamber and projection optical engine Download PDFInfo
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- CN201717287U CN201717287U CN2010202573128U CN201020257312U CN201717287U CN 201717287 U CN201717287 U CN 201717287U CN 2010202573128 U CN2010202573128 U CN 2010202573128U CN 201020257312 U CN201020257312 U CN 201020257312U CN 201717287 U CN201717287 U CN 201717287U
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Abstract
The utility model provides a monochromatic source packaging structure with a phosphor powder excitation chamber, comprising at least one luminescent chip of the emitting pumping light, a transparent packaging colloid coating the luminescent chip, an optical filter bonded to the transparent packaging colloid, and a phosphor powder layer and an optical lens disposed on the optical filter. Wherein, the phosphor powder layer is used for absorbing the pumping light, and exciting fluorescence with the wavelength different from the wavelength of the pumping light. a first film is plated on the surface of the optical lens toward the phosphor powder layer, the first film is used for transmitting the fluorescence and reflecting the pumping light. a second film is plated on the surface of the optical filter toward the phosphor powder layer, the second film is used for transmitting the pumping light and reflecting the fluorescence. The packaging structure in the utility model uses the optical filter and two films with opposite wave property and disposed on the optical lens to form the excitation chamber and improve the conversion efficiency of the phosphor powder, thereby increasing the emitting brightness and the light output purity of the fluorescence, also, compared with the conventional big chip, the packaging structure is advantaged by low cost. In addition, the utility model also provides a projection optical engine using the light source packaging structure.
Description
Technical field
The utility model relates to the encapsulating structure and the projection display technique of monochromatic source, relates in particular to a kind ofly to excite the monochromatic source encapsulating structure in chamber and use its projecting optical engine with fluorescent material.
Background technology
Light source is one of liquid crystal projector important components, and its brightness, light utilization efficiency and caloric value directly have influence on problems such as the power consumption, projector's operation and maintenance cost of quality, the projector of projected image.In the past, most of projectors all adopt ultrahigh pressure mercury lamp (UHP) or Metal halogen lamp as light source, though this class light source brightness can meet the demands, but its power consumption high life is short, and light conversion efficiency is lower, and caloric value is big, and can pollute environment, therefore not to be well suited for as projection light source.Nowadays, increasing liquid crystal projector is all brought into use environmental protection, light-emitting diode that conversion efficiency is high (Light Emitting Diode is LED) as light source.
As the led light source of demonstration and lighting field, existing low-cost led light source adopts the fluorescence conversion usually, that is, utilize the emission light of predetermined wavelength to come excitated fluorescent powder, produces white light.For example: the white light patent of Japan day inferior (Nichia) company, utilize blue-ray LED to excite yellow YAG fluorescent material to produce white light exactly.Yet, if utilize this fluorescence conversion regime to obtain monochromatic light,, these pump lights are not fully utilized because the pump light that part is not absorbed by fluorescent material can directly shoot to the light source exit facet, reduce conversion efficiency, limited to the output brightness of light source; Simultaneously, this part light mixes output with the fluorescence that the fluorescent material stimulated emission is come out, and reduces the light output purity.
The utility model content
The technical problems to be solved in the utility model provides the monochromatic source encapsulating structure that a kind of conversion efficiency height, light source output brightness and the high band fluorescent material of purity excite the chamber.
In addition, also need provide the projecting optical engine that a kind of cost is lower, Projection Display is effective.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of monochromatic source encapsulating structure that excites the chamber with fluorescent material, at least one luminescence chip that comprises the outgoing pump light, coat the transparent enclosure colloid of described luminescence chip, also be provided with the filter with its bonding on the described transparent enclosure colloid, also be provided with phosphor powder layer and optical lens on the described filter.Wherein, phosphor powder layer is used for absorptive pumping light, and inspires the fluorescence of wavelength difference and this pump light.Described optical lens is coated with the first film towards the surface of phosphor powder layer, is used for transmission fluorescence, reflected pump light.Described filter is coated with second film towards the surface of phosphor powder layer, is used for the transmission pump light, reflected fluorescent light.
A kind of projecting optical engine comprises little display floater, projection lens and lighting device.Wherein, little display floater is modulated incident light, and modulates the image light that carries image information.Projection lens is used for the visual information projection on described little display floater is imaged onto screen.Lighting device shines described little display floater.This lighting device comprises that at least one above-mentioned described band fluorescent material excites the monochromatic source encapsulating structure in chamber.
A kind of projecting optical engine comprises lighting device, Digital Micromirror Device, total internal reflection prism and projection lens.Wherein, lighting device is used to provide incident ray, and it comprises that at least one above-mentioned described band fluorescent material excites the monochromatic source encapsulating structure in chamber.Digital Micromirror Device optionally reflects described incident ray to produce image light.Total internal reflection prism is arranged between described lighting device and the Digital Micromirror Device, and incident ray is imported described Digital Micromirror Device and reflects the image light of described Digital Micromirror Device outgoing.Projection lens is used to receive the image light of this Digital Micromirror Device institute outgoing, and this image ray cast is become image frame.
Encapsulating structure of the present utility model, go out fluorescence by the optical excitation of phosphor powder layer absorptive pumping, obtain monochromatic output light, it utilizes the logical two kinds of opposite films of characteristic of the ripple that is provided with on filter, the optical lens, forms and excites the chamber, make the abundant absorptive pumping light of phosphor powder layer, inspire more fluorescence, improve conversion efficiency, thereby increase the outgoing brightness of fluorescence, compare with traditional large chip, cost is low; Simultaneously, feasible fluorescence to the luminescence chip scattering obtains utilizing, and by the exit facet outgoing of light source, further improves the output brightness of light source; In addition, also avoided being mapped to the exit facet outgoing of the pump light that is not absorbed and used on the phosphor powder layer, improved the light output purity by light source.And use the projecting optical engine of this encapsulating structure, little display floater/the Digital Micromirror Device of rayed of the illuminating source packaging structure outgoing that conversion efficiency height, light source output brightness and purity are high, afterwards, modulate image light by little display floater/Digital Micromirror Device, output to external screen from projection lens, simple in structure, the brightness height, production cost is lower, and Projection Display is effective.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 excites the monochromatic source encapsulating structure planar structure schematic diagram in chamber for the band fluorescent material of the utility model first execution mode.
Fig. 2 excites the monochromatic source encapsulating structure planar structure schematic diagram in chamber for the band fluorescent material of the utility model second execution mode.
Fig. 3 is the planar structure schematic diagram of the utility model first execution mode projecting optical engine.
Fig. 4 is the planar structure schematic diagram of the utility model second execution mode projecting optical engine.
Embodiment
The band fluorescent material that Figure 1 shows that the utility model first execution mode excites the planar structure schematic diagram of the monochromatic source encapsulating structure in chamber.Band fluorescent material excites the monochromatic source encapsulating structure in chamber to comprise at least one luminescence chip 10, coats the transparent enclosure colloid 20 of luminescence chip 10, and the filter 30 with transparent enclosure colloid 20 bondings is arranged on phosphor powder layer 40 and optical lens 50 on the filter 30.
Transparent enclosure colloid 20 coats luminescence chip 10, for luminescence chip provides reliable protection, and, this transparent enclosure colloid and filter 30 bondings.In addition, luminescence chip 10 also is welded with the gold thread (not shown), and transparent enclosure colloid 20 coats luminescence chip 10 and gold thread simultaneously, carries out mechanical protection, improves the reliability of light source encapsulation.In the utility model execution mode, packing colloid 20 is a silica gel.
Again, optical lens 50 is coated with the first film 501 towards the surface of phosphor powder layer, is used for transmission fluorescence, reflected pump light.Filter 30 is coated with second film 301 towards the surface of phosphor powder layer, be used for the transmission pump light, reflected fluorescent light.Therefore, in the utility model, phosphor powder layer 40 separates with luminescence chip 10, utilizes the reflection of 301 pairs of fluorescence of second film, the transmission of 501 pairs of fluorescence of the first film, and feasible fluorescence to the pump light source scattering obtains utilizing, by the exit facet outgoing of monochromatic source; In addition, utilize 501 pairs of pumping reflection of lights of the first film, 301 pairs of pumping optical transmissions of second film have avoided being mapped to the exit facet outgoing by monochromatic source of the pump light that is not absorbed and used on the phosphor powder layer 40, improve the light output purity.
In the utility model execution mode, optical lens 50 is a planoconvex spotlight, assembles the fluorescence of outgoing; Filter 30 is dull and stereotyped filter.Phosphor powder layer 40 is to be coated in uniformly between optical lens 50 and the filter 30.
Therefore, monochromatic source encapsulating structure of the present utility model goes out fluorescence by the optical excitation of phosphor powder layer absorptive pumping, obtains monochromatic output light, it utilizes the logical two kinds of opposite films of characteristic of the ripple that is provided with on filter, the optical lens, formation excites the chamber, makes the abundant absorptive pumping light of phosphor powder layer, inspires more fluorescence, improve conversion efficiency, thereby increase the outgoing brightness of fluorescence, compare with traditional large chip, cost is low; Simultaneously, feasible fluorescence to the luminescence chip scattering obtains utilizing, and by the exit facet outgoing of light source, further improves the output brightness of light source; In addition, also avoided being mapped to the exit facet outgoing of the pump light that is not absorbed and used on the phosphor powder layer, improved the light output purity by light source.
Figure 2 shows that the utility model second execution mode band fluorescent material excites the monochromatic source encapsulating structure planar structure schematic diagram in chamber, the illuminating source packaging structure of this illuminating source packaging structure and first execution mode is basic identical, difference is that optical lens shown in Figure 2 50 ' is meniscus lens, adopt this structure, avoid the transmitance of the wide-angle emergent light that plated film causes low.At this moment, filter 30 ' is the plano-convex filter, and certainly, this filter 30 ' can also be bent moon filter or dull and stereotyped filter.
Figure 3 shows that the planar structure schematic diagram of the utility model first execution mode projecting optical engine.Projecting optical engine comprises lighting device 60, polarizing beam splitter 70, little display floater 80 and projection lens 90.Wherein, the little display floater 80 of lighting device 60 irradiations, it comprises that the band fluorescent material of at least one above-mentioned arbitrary execution mode excites the monochromatic source encapsulating structure in chamber and the various shaping mirror group (not shown)s of emergent light being carried out shaping.
Polarizing beam splitter 70 is arranged on the output light path of lighting device 60, in the utility model execution mode, polarizing beam splitter 70 is the lens type polarizing beam splitter, compose cube shaped by two triangular prisms, be coated with the polarization spectro rete therebetween on the contact-making surface, form a polarization light-dividing surface by this polarization spectro rete, this polarization light-dividing surface can be converted to non-polarized light polarised light and isolate the S polarised light and the P polarised light.Certainly, polarizing beam splitter 70 also can compose other shape by other prism, is converted into the polarised light outgoing as long as satisfy the non-polarized light of incident.
In other execution mode of the utility model, this polarizing beam splitter 70 also can be replaced by flat polarizing beam splitter.
The quantity of little display floater 80 is one, is arranged at a non-adjacent side of polarizing beam splitter 70 and lighting device, is used for received incident light is modulated, and modulates the image light that carries image information.In the utility model execution mode, little display floater 80 is reflective type silicon-based liquid crystal panel (Liquid Crystal on Silicon, LCOS), when the light that receives when little display floater 80 is the S polarised light, through after the modulation of little display floater 80, then reflect another polarised light P polarised light that carries image information, behind polarizing beam splitter 70 folded optical paths, with this P polarized light transmission to projection lens 90.Projection lens 90 and little display floater 80 opposing parallel settings in the execution mode of the present utility model are used for the visual information projection on little display floater 80 is imaged onto screen.
In other execution mode of the utility model, the received polarised light of little display floater 80 ' (shown in the dotted line of Fig. 3) also can be the P polarised light, through after the modulation of little display floater 80 ', be converted to the S polarised light that carries image information, and on its reflected back polarizing beam splitter 70, this S polarised light is reflexed on the projection lens 90 by polarizing beam splitter 70.In other words, a projection lens 90 and little display floater a 80 ' adjacent side that is arranged at polarizing beam splitter 70, that is, projection lens 90 is arranged at respectively on the adjacent two sides of polarizing beam splitter 70 with little display floater 80 '.At this moment, projection lens 90 is to be used to receive and throw the S polarised light that carries image information.
Therefore, the projecting optical engine of present embodiment, the high light of output brightness of the conversion efficiency height of illuminating source packaging structure outgoing, light source and purity is by the shaping of shaping mirror group, the polarization separation of polarizing beam splitter, shine little display floater, afterwards, little display floater modulates image light and enters polarizing beam splitter once more, outputs to external screen by polarizing beam splitter from projection lens, simple in structure, the brightness height, production cost is lower, and Projection Display is effective.
Figure 4 shows that the planar structure schematic diagram of the utility model second execution mode projecting optical engine.This projecting optical engine comprises lighting device 61, total internal reflection prism 71, Digital Micromirror Device (Digital Micro mirror Device, DMD) 81 and projection lens 91.Wherein, lighting device 61 is used to provide incident ray, and it comprises that the band fluorescent material of at least one above-mentioned arbitrary execution mode excites the monochromatic source encapsulating structure in chamber and the various shaping mirror group (not shown)s of emergent light being carried out shaping.
Therefore, the projecting optical engine of present embodiment, the light of the illuminating source packaging structure outgoing that conversion efficiency height, light source output brightness and purity are high is by the shaping of shaping mirror group, and the reflection of total internal reflection prism enters Digital Micromirror Device and carries out modulation, afterwards, Digital Micromirror Device modulates image light (image light) and outputs to external screen from projection lens, and is simple in structure, the brightness height, production cost is lower, and Projection Display is effective.
The embodiment of the above is the better embodiment of utility model, be not to limit concrete practical range of the present utility model with this, scope of the present utility model comprises and is not limited to this embodiment, and for example, luminescence chip is one or a plurality of LD chips of arranging with array way.Perhaps little display floater be transmissive liquid crystal panel (Liquid Crystal Display, LCD), at this moment, omit polarizing beam splitter, transmissive liquid crystal panel is arranged on the emitting light path of lighting device, incident light is modulated, and transmitted the light that carries image information.The equivalence variation that all shapes according to the utility model, structure are done all comprises in the protection range of the present utility model.
Claims (12)
1. monochromatic source encapsulating structure that excites the chamber with fluorescent material, comprise at least one luminescence chip of outgoing pump light and coat the transparent enclosure colloid of described luminescence chip, it is characterized in that, also be provided with the filter with its bonding on the described transparent enclosure colloid, also be provided with phosphor powder layer and optical lens on the described filter; Wherein, phosphor powder layer is used for absorptive pumping light, and inspires the fluorescence of wavelength difference and this pump light; Described optical lens is coated with the first film towards the surface of phosphor powder layer, is used for transmission fluorescence, reflected pump light; Described filter is coated with second film towards the surface of phosphor powder layer, is used for the transmission pump light, reflected fluorescent light.
2. band fluorescent material according to claim 1 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described luminescence chip is led chip or LD chip.
3. band fluorescent material according to claim 2 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described luminescence chip is blue chip or UV chip.
4. band fluorescent material according to claim 2 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described luminescence chip also is welded with gold thread, and described packing colloid coats described gold thread.
5. band fluorescent material according to claim 1 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described phosphor powder layer is a kind of or its combination in the monochromatic fluorescent material of red, yellow, green, blue.
6. band fluorescent material according to claim 1 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described optical lens is planoconvex spotlight or meniscus lens.
7. band fluorescent material according to claim 1 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described filter is dull and stereotyped filter or plano-convex filter.
8. band fluorescent material according to claim 1 excites the monochromatic source encapsulating structure in chamber, it is characterized in that, described packing colloid is a silica gel.
9. projecting optical engine comprises:
Little display floater is modulated incident light, and modulates the image light that carries image information;
Projection lens is used for the visual information projection on described little display floater is imaged onto screen; And
Lighting device shines described little display floater, it is characterized in that, described lighting device comprises at least one excites the chamber according to any described band fluorescent material in the claim 1 to 8 monochromatic source encapsulating structure.
10. projecting optical engine according to claim 9 is characterized in that, described little display floater is LCOS, also is provided with polarizing beam splitter on its input path.
11. projecting optical engine according to claim 9 is characterized in that, described little display floater is LCD.
12. a projecting optical engine comprises:
Lighting device is used to provide incident ray, it is characterized in that, described lighting device comprises at least one excites the chamber according to any described band fluorescent material in the claim 1 to 8 monochromatic source encapsulating structure;
Digital Micromirror Device optionally reflects described incident ray to produce image light;
Total internal reflection prism is arranged between described lighting device and the Digital Micromirror Device, and incident ray is imported described Digital Micromirror Device and reflects the image light of described Digital Micromirror Device outgoing; And
Projection lens is used to receive the image light of this Digital Micromirror Device institute outgoing, and this image ray cast is become image frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010202573128U CN201717287U (en) | 2010-07-12 | 2010-07-12 | Monochromatic source packaging structure with phosphor powder excitation chamber and projection optical engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202573128U CN201717287U (en) | 2010-07-12 | 2010-07-12 | Monochromatic source packaging structure with phosphor powder excitation chamber and projection optical engine |
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| CN201717287U true CN201717287U (en) | 2011-01-19 |
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| CN102263195A (en) * | 2011-08-19 | 2011-11-30 | 华南师范大学 | Power type LED (light-emitting diode) with fluorescent powder heat-conducting structure |
| CN102681318A (en) * | 2011-03-18 | 2012-09-19 | 红蝶科技(深圳)有限公司 | Multi-pump light source based on fluorescent powder and projection optical engine using multi-pump light source |
| CN102720957A (en) * | 2011-12-04 | 2012-10-10 | 深圳市光峰光电技术有限公司 | Light emitting device, projection device and illuminating device |
| WO2012152107A1 (en) * | 2011-05-09 | 2012-11-15 | 深圳市绎立锐光科技开发有限公司 | Method for producing high-luminance monochromatic light based on optical wavelength conversion and light source |
| CN102914939A (en) * | 2011-10-21 | 2013-02-06 | 深圳市光峰光电技术有限公司 | Light source system and related projection system |
| CN103594608A (en) * | 2013-10-31 | 2014-02-19 | 深圳市聚飞光电股份有限公司 | White light LED, backlight module and manufacturing method of white light LED |
| CN103827746A (en) * | 2011-08-16 | 2014-05-28 | 艾斯光学有限公司 | Optical wheel |
| CN103885275A (en) * | 2012-12-21 | 2014-06-25 | 卡西欧计算机株式会社 | Light source unit and projector |
| US9726335B2 (en) | 2011-09-22 | 2017-08-08 | Delta Electronics, Inc. | Phosphor device and manufacturing method thereof having a second phosphor agent to increase the luminous intensity of a converted color light |
| CN107305313A (en) * | 2016-04-19 | 2017-10-31 | 台达电子工业股份有限公司 | Fluorometer arrangement |
| US10281810B2 (en) | 2011-09-22 | 2019-05-07 | Delta Electronics, Inc. | Projection apparatus comprising phosphor wheel coated with phosphor agents for converting waveband light |
| CN110262172A (en) * | 2019-05-28 | 2019-09-20 | 吕素萍 | Projector based on liquid crystal light splitting mixes light source |
| US10688527B2 (en) | 2011-09-22 | 2020-06-23 | Delta Electronics, Inc. | Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights with different wavelength peaks |
| CN112087609A (en) * | 2019-06-12 | 2020-12-15 | 扬明光学股份有限公司 | Projection device and manufacturing method thereof |
| CN113178435A (en) * | 2021-04-19 | 2021-07-27 | 深圳市洲明科技股份有限公司 | COB packaging structure optical module, display screen and spraying method |
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2010
- 2010-07-12 CN CN2010202573128U patent/CN201717287U/en not_active Expired - Lifetime
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| CN102681318A (en) * | 2011-03-18 | 2012-09-19 | 红蝶科技(深圳)有限公司 | Multi-pump light source based on fluorescent powder and projection optical engine using multi-pump light source |
| WO2012152107A1 (en) * | 2011-05-09 | 2012-11-15 | 深圳市绎立锐光科技开发有限公司 | Method for producing high-luminance monochromatic light based on optical wavelength conversion and light source |
| CN103827746A (en) * | 2011-08-16 | 2014-05-28 | 艾斯光学有限公司 | Optical wheel |
| CN102263195A (en) * | 2011-08-19 | 2011-11-30 | 华南师范大学 | Power type LED (light-emitting diode) with fluorescent powder heat-conducting structure |
| US9726335B2 (en) | 2011-09-22 | 2017-08-08 | Delta Electronics, Inc. | Phosphor device and manufacturing method thereof having a second phosphor agent to increase the luminous intensity of a converted color light |
| US10758937B2 (en) | 2011-09-22 | 2020-09-01 | Delta Electronics, Inc. | Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights |
| US10688527B2 (en) | 2011-09-22 | 2020-06-23 | Delta Electronics, Inc. | Phosphor device comprising plural phosphor agents for converting waveband light into plural color lights with different wavelength peaks |
| US10310363B2 (en) | 2011-09-22 | 2019-06-04 | Delta Electronics, Inc. | Phosphor device with spectrum of converted light comprising at least a color light |
| US10281810B2 (en) | 2011-09-22 | 2019-05-07 | Delta Electronics, Inc. | Projection apparatus comprising phosphor wheel coated with phosphor agents for converting waveband light |
| CN102914939A (en) * | 2011-10-21 | 2013-02-06 | 深圳市光峰光电技术有限公司 | Light source system and related projection system |
| CN102720957A (en) * | 2011-12-04 | 2012-10-10 | 深圳市光峰光电技术有限公司 | Light emitting device, projection device and illuminating device |
| CN103885275A (en) * | 2012-12-21 | 2014-06-25 | 卡西欧计算机株式会社 | Light source unit and projector |
| CN103594608B (en) * | 2013-10-31 | 2016-05-18 | 深圳市聚飞光电股份有限公司 | The preparation method of a kind of white light LEDs, backlight module and white light LEDs |
| CN103594608A (en) * | 2013-10-31 | 2014-02-19 | 深圳市聚飞光电股份有限公司 | White light LED, backlight module and manufacturing method of white light LED |
| CN107305313A (en) * | 2016-04-19 | 2017-10-31 | 台达电子工业股份有限公司 | Fluorometer arrangement |
| CN110262172A (en) * | 2019-05-28 | 2019-09-20 | 吕素萍 | Projector based on liquid crystal light splitting mixes light source |
| CN112087609A (en) * | 2019-06-12 | 2020-12-15 | 扬明光学股份有限公司 | Projection device and manufacturing method thereof |
| CN113178435A (en) * | 2021-04-19 | 2021-07-27 | 深圳市洲明科技股份有限公司 | COB packaging structure optical module, display screen and spraying method |
| CN113178435B (en) * | 2021-04-19 | 2024-01-19 | 深圳市洲明科技股份有限公司 | COB packaging structure optical module, display screen and spraying method |
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Address after: Cui Jing Road Shenzhen City, Guangdong province 518118 Pingshan New District No. 35 No. 1 Building 6 East Patentee after: Butterfly Technology (Shenzhen) Limited Address before: 518057, Guangdong, Nanshan District hi tech Industrial Park, Shenzhen District North West Road, No. 5, Galaxy Fengyun building, 3 floor Patentee before: Butterfly Technology (Shenzhen) Limited |
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Granted publication date: 20110119 |