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CN107017329A - QFN surface-adhered types RGB LED package supports and its manufacture method - Google Patents

QFN surface-adhered types RGB LED package supports and its manufacture method Download PDF

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Publication number
CN107017329A
CN107017329A CN201710194336.XA CN201710194336A CN107017329A CN 107017329 A CN107017329 A CN 107017329A CN 201710194336 A CN201710194336 A CN 201710194336A CN 107017329 A CN107017329 A CN 107017329A
Authority
CN
China
Prior art keywords
base plate
metal base
led package
package supports
adhered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710194336.XA
Other languages
Chinese (zh)
Inventor
李邵立
孔平
孔一平
袁信成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong jierunhong Photoelectric Technology Co.,Ltd.
Original Assignee
SHENZHEN WISDOW REACHES INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN WISDOW REACHES INDUSTRY Co Ltd filed Critical SHENZHEN WISDOW REACHES INDUSTRY Co Ltd
Priority to CN201710194336.XA priority Critical patent/CN107017329A/en
Publication of CN107017329A publication Critical patent/CN107017329A/en
Pending legal-status Critical Current

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Classifications

    • H01L33/62
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/48Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07
    • H01L21/4814Conductive parts
    • H01L21/4821Flat leads, e.g. lead frames with or without insulating supports
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00Assemblies consisting of a plurality of semiconductor or other solid state devices
    • H01L25/03Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes
    • H01L25/04Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00
    • H01L25/0753Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00 the devices being arranged next to each other
    • H01L33/48
    • H01L33/647

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Led Device Packages (AREA)

Abstract

The invention provides a kind of QFN surface-adhered types RGB LED package supports, including metal base plate and Insulating frame, the metal base plate front is provided with luminous zone, described light divides into four regions, it is connected between the region by Insulating frame, the Insulating frame forms bowl in metal base plate front, and the metal base plate reverse side is provided with the pad for being used for being connected with external circuit.Present invention also offers the manufacture method of the package support, metal base plate is made into conducting wire, pad is made at the metal base plate back side, front and/or reverse side make step, glue is wrapped on the metal base plate, the metal electrode of die bond and bonding wire is reserved, the Insulating frame with bowl shape is formed.The present invention concentrates light by bowl structure, makes light-emitting area unique, and then make the display resolution made more excellent;By making step on metal base plate, it is ensured that the compactness and the stability of package support combined with Insulating frame.

Description

QFN surface-adhered type RGB-LED package supports and its manufacture method
Technical field
The present invention relates to SMD(Surface Mounted Devices, surface mount device)LED encapsulation technologies, it is special It is not to be related to QFN(Quad Flat No-leadPackage, quad flat non-pin package)Surface-adhered type RGB LED are encapsulated Support and its manufacture method.
Background technology
As display screen industry is continued to develop, display screen is with LED by original DIP(dual inline-pin Package, dual-inline package technology)Structure high-speed changes to SMD structures, and the LED of SMD structures has lightweight, individual It is smaller, be increasingly accepted the advantages of automation is installed, lighting angle is big, color is uniform, decay is few, although typically SMD LED has an above advantage, but there are that larger, the thermally conductive pathways length of decay, carrying electric current be low, production is complicated, and reliability is low, Humidity resistance is low, and against weather is poor;If in the case where not changing the overall structure of product, to improve the reliability of product, So far in the industry cycle still without preferable solution.
In existing SMD RGB LED manufactures, using the product of PLCC4 structures(Such as 3528,2121,1010 etc. Specification), but said structure is all by the way of common:PPA+ copper or iron pin(As shown in Figure 1), or the plating of PCB+ copper platinum Mode(As shown in Figure 2).The product of this two kinds of modes has inborn deficiency, as PPA+ metal pins modes, is by injection Thermoplastic 701 is adjacent to by machine with metal 702, is not stained with and is connected together, when expanding with heat and contract with cold, and is easily produced between them Raw gap, when End-Customer, extraneous water and steam enters in packaging body easily by gap when in use, so as to cause product Failure;And PCB schemes are mainly used in small spacing, it also has its inborn deficiency, and it is by glass by using resin 801 first Compacting is surrounded, is then formed by being stained with copper platinum circuit etching, the gap of material and hydroscopicity are all very high, and this multiple material Expansion rate it is different, and the later stage is molded one layer of flat glue 802 as protective layer again in the plane, and this mode has no idea to be formed The protection of one cup, can have problems with:First, light is scattered very serious, causes test data consistent toward very poor, light it is uniform Property is very poor;2nd, mechanical strength is very poor, as long as there is external force effect, sealer, which is easy to take off, causes LED failure;3rd, because It is to be stained with conjunction by two layers, edge is not protected, water and steam are easy to, by between the two entering between lamp body, cause Product failure;4th, circuit is to be used for conductive and radiating by electroplating the very thin metal of last layer, is radiated poor.
Therefore, prior art has yet to be improved and developed.
The content of the invention
It is an object of the invention to provide a kind of QFN surface-adhered types RGB LED package supports and its manufacture method, it is intended to The problems such as solving existing SMD RGB LED lights scattered seriously, packaging machinery intensity difference, poor sealing, weak heat-dissipating.
To solve the above problems, technical scheme is as follows:
A kind of QFN surface-adhered types RGB LED package supports, including metal base plate and Insulating frame, the metal base plate front Provided with luminous zone, described light divides into four regions, for die bond bonding wire, is connected between the region by Insulating frame, institute State Insulating frame and form bowl in metal base plate front, the metal base plate reverse side, which is provided with, is used for what is be connected with external circuit Pad.
Described QFN surface-adhered type RGB LED package supports, wherein, the metal base plate front and/or reverse side are set There is step, for strengthening the stability that the metal base plate is combined with Insulating frame.
Described QFN surface-adhered type RGB LED package supports, wherein, four regions of the luminous zone, which are divided into, to be located at Middle " L " shape or the chip weld zone of inverted "L" shaped and the first bonding wire for being located at the upper left corner, the upper right corner and the lower right corner respectively Area, the second wire welding area and the 3rd wire welding area.
Described QFN surface-adhered type RGB LED package supports, wherein, the metal base plate is provided with multiple luminous zones, The Insulating frame forms the bowl of respective amount on the luminous zone.
Described QFN surface-adhered type RGB LED package supports, wherein, the quantity of the luminous zone is 2-100.
Described QFN surface-adhered type RGB LED package supports, wherein, it is additionally provided with the metal base plate and the weldering Disk highly concordant supporting construction.
Described QFN surface-adhered type RGB LED package supports, wherein, the metal base plate is copper coin or iron plate, surface It is silver-plated or gold-plated.
A kind of manufacture method of such as above-mentioned QFN surface-adhered types RGB LED package supports, comprises the following steps:
Step 1:Metal base plate is made into conducting wire, pad is made at the metal base plate back side, front and/or reverse side make Step;
Step 2:The supporting construction concordant with pad height is made at the back side of the metal base plate;
Step 3:Glue is wrapped on the metal base plate, the metal electrode of die bond and bonding wire is reserved, is formed with bowl shape Insulating frame.
The manufacture method of described QFN surface-adhered type RGB LED package supports, wherein, in addition to step 4:Described Metal is plated on metal electrode.
The manufacture method of described QFN surface-adhered type RGB LED package supports, wherein, in addition to step 5:Dried Roasting aging, baking temperature is 100-300 degrees Celsius.
Beneficial effects of the present invention include:QFN surface-adhered types RGB LED package supports and its manufacture that the present invention is provided Method, the mode of existing plating thin metal is replaced by using metal base plate, electric conductivity is enhanced, straight by metal base plate Connect and contacted with pcb board, heat dissipation path is shorter, chip heat can be exported quickly;The structure of bowl is formed by front, light is concentrated Line, makes light-emitting area unique, and then makes display resolution, the bright dark contrast made etc. more excellent;By being made on metal base plate Make step, it is ensured that the compactness and the stability of package support combined with Insulating frame;Multiple luminescence units are integrated in one On package support, production efficiency is further increased, production cost is reduced.
Brief description of the drawings
The structural representation of the existing PPA supports of Fig. 1.
The structural representation of the existing CHIP type packages supports of Fig. 2.
A kind of profile for QFN surface-adhered types RGB LED package supports that Fig. 3 provides for the present invention.
A kind of front elevation for QFN surface-adhered types RGB LED package supports that Fig. 4 provides for the present invention.
A kind of back view for QFN surface-adhered types RGB LED package supports that Fig. 5 provides for the present invention.
The profile for another QFN surface-adhered types RGB LED package supports that Fig. 6 provides for the present invention.
The front elevation for another QFN surface-adhered types RGB LED package supports that Fig. 7 provides for the present invention.
The back view for another QFN surface-adhered types RGB LED package supports that Fig. 8 provides for the present invention.
A kind of manufacturing flow chart for QFN surface-adhered types RGB LED package supports that Fig. 9 provides for the present invention.
Description of reference numerals:101st, bowl;102nd, metal base plate;103rd, pad;104th, Insulating frame;105th, step; 106th, supporting construction;107th, the first wire welding area;108th, the second wire welding area;109th, the 3rd wire welding area;110 chip weld zones;701、 Thermoplastic;702nd, metal;801st, resin;802nd, flat glue.
Embodiment
To make the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings The present invention is further described.
Fig. 1 is the structural representation of the package support of existing PPA+ copper pin, because the package support of the type passes through Thermoplastic is adjacent to by injection machine with metal, is not stained with and is connected together, when expanding with heat and contract with cold, and is easily produced between them Gap, when End-Customer, extraneous water and steam enters in packaging body easily by gap when in use, so as to cause product to lose Effect.Fig. 2 is the structural representation of existing CHIP type packages support, surrounds glass by using resin 801 and is compacted, then passes through It is stained with copper platinum circuit etching to form, the gap of material and hydroscopicity are all very high, and the expansion rate of this multiple material is different, and Later stage is molded one layer of flat glue 802 as protective layer again in the plane, and this mode has no idea to form the protection of a cup, will There are problems.
Referring to Fig. 3 to Fig. 5, a kind of QFN surface-adhered types RGB LED package supports provided for the present invention, including metal Bottom plate 102 and Insulating frame 104, the material of metal base plate 102 can be copper or iron etc., electroplate or gold-plated.Insulating frame 104, which are preferably used thermosets, is made, further, and its material can be the materials such as epoxy resin, PPA, PCT, at this It is epoxy resin in embodiment.The front of metal base plate 102 is provided with luminous zone, and described light divides into four regions, for die bond It is connected between bonding wire, the region by Insulating frame 104, Insulating frame 104 forms bowl 101, bowl in the front of metal base plate 102 Light is focused on front by the setting of cup 101, it is ensured that light-emitting area is unique, and then improves the resolution for the display screen thus made Rate, its bright dark contrast etc. is more excellent.In actual applications, the metal base plate fixed LED chip in bowl 101 using crystal-bonding adhesive On 102, the translucent epoxy glue with diffusant is used to be encapsulated in bowl 101 chip and key and line after bonding wire It is interior.Because glue and the adhesion of bowl 101 are good, water and steam is more difficult penetrates into inside bowl improves the LED use longevity Life.The pad 103 for being used for being connected with external circuit is provided with the reverse side of metal base plate 102, in actual applications, pad will be passed through 103 directly contact connection with pcb board, and by way of this metal base plate 102 is directly contacted with pcb board, heat dissipation path is shorter, Chip heat can be exported quickly.
In actual applications, the front of metal base plate 102 and/or reverse side are provided with step 105, for strengthening the metal bottom Compactness and stability that plate 102 is combined with Insulating frame 104, prevent the entrance of water and steam, while further enhancing branch The mechanical strength of frame.Preferably, the tow sides of metal base plate 102 are provided with step 105.
Referring to Fig. 4, four regions of the luminous zone be divided into positioned at the chip weld zone 110 of middle inverted "L" shaped and It is located at the upper left corner, first wire welding area 107 in the upper right corner and the lower right corner, the second wire welding area 108 and the 3rd wire welding area 109 respectively. In actual applications, red, green, blue LED chip is fixed on chip weld zone 110 using crystal-bonding adhesive, the first wire welding area 107, Second wire welding area 108 and the 3rd wire welding area 109 are connected as stent electrode by key and line with the chip.Preferably, One wire welding area 107 is used as public polar region.
Referring to Fig. 5, it is additionally provided with the reverse side of metal base plate 102 and the highly concordant supporting construction 106 of pad 103.Support knot The setting of structure 106 can ensure the planarization of metal base plate 102 in support manufacturing process.Preferably, supporting construction 106 can be Circular, square or irregular shape Support or support column.
In actual applications, to improve production efficiency, production technology is simplified, reducing can on production cost, metal base plate 102 So that provided with multiple luminous zones, Insulating frame 104 forms the bowl 101 of respective amount on the luminous zone.Preferably, the hair The quantity in light area is 2-100.Existing package support is generally single form(As depicted in figs. 1 and 2), in practical application by In enormous amount, low production efficiency, easily there is quality problem.And the present invention on metal base plate 102 by that will set multiple Luminous zone, multiple luminescence units are integrated on a packaging body, production efficiency is drastically increased.
Referring to Fig. 6 to Fig. 8, another embodiment provided for the present invention.4 are provided with metal base plate 102 to light It is provided with area, the luminous zone in bowl 101, each luminous zone and configures one group of RGB chips formation illuminator, Mei Gefa Body of light is by the effect of bowl 101, and light-emitting area is unique, is unaffected each other, improves the resolution ratio of LED display And contrast.
Referring to Fig. 9, present invention also offers a kind of manufacturer such as above-mentioned QFN surface-adhered types RGB LED package supports Method, comprises the following steps:
Step 1:Metal base plate 102 is made into conducting wire by way of etching or punching press, made at the back side of metal base plate 102 Pad 103, obverse and reverse makes step 105, in actual production, to improve production efficiency, disposably produces multiple encapsulation Support, can be processed to one piece big metallic plate, while etching multiple metal base plates 102, and be cut in subsequent handling;
Step 2:Made at the back side of metal base plate 102 by way of etching or punching press and the highly concordant support of pad 103 Structure 106, it is ensured that the planarization being subsequently molded, to ensure swelling stress release of the metal base plate 102 under subsequent high temperature, with list Individual metal base plate 102 is unit, and release hollow out is made on each unit periphery, and takes datum line as follow-up cutting around The datum line of process;
Step 3:Glue is wrapped on metal base plate 102 by moulding press, the metal electrode of die bond and bonding wire is reserved, formation has The Insulating frame 104 of bowl shape, it is preferable that wrapped up using epoxide-resin glue.
In actual production, formed after package support, metal can plated by plating or depositional mode, be conducive to follow-up Weld, it is conductive and reflective.
Baking aging is carried out to the package support, it is further stablized, baking temperature is 100-300 degrees Celsius, then Single led product is cut into by cutting machine.
By the present invention in that replacing the mode of existing plating thin metal with metal base plate, electric conductivity is enhanced, is passed through Metal base plate is directly contacted with pcb board, and heat dissipation path is shorter, and chip heat can be exported quickly;Bowl is formed by front Structure, concentrates light, makes light-emitting area unique, and then makes display resolution, the bright dark contrast made etc. more excellent;By in gold Step is made on category bottom plate, it is ensured that the compactness and the stability of package support combined with Insulating frame;By multiple luminescence units It is integrated on a package support, further increases production efficiency, reduces production cost.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention Protect scope.

Claims (10)

1. a kind of QFN surface-adhered types RGB-LED package supports, it is characterised in that described including metal base plate and Insulating frame Metal base plate front is provided with luminous zone, it is described it is luminous divide into four regions, for die bond bonding wire, by insulating between the region Framework be connected, the Insulating frame the metal base plate front formed bowl, the metal base plate reverse side be provided be used for it is outer The pad of portion's circuit connection.
2. QFN surface-adhered types RGB-LED package supports according to claim 1, it is characterised in that the metal base plate Front and/or reverse side are provided with step.
3. QFN surface-adhered types RGB-LED package supports according to claim 1, it is characterised in that the luminous zone Four regions are divided into positioned at the chip weld zone of middle " L " shape or inverted "L" shaped and are located at the upper left corner, the upper right corner and the right side respectively The first wire welding area, the second wire welding area and the 3rd wire welding area of inferior horn.
4. QFN surface-adhered types RGB-LED package supports according to claim 1, it is characterised in that the metal base plate Multiple luminous zones are provided with, the Insulating frame forms the bowl of respective amount on the luminous zone.
5. QFN surface-adhered types RGB-LED package supports according to claim 4, it is characterised in that the luminous zone Quantity is 2-100.
6. QFN surface-adhered types RGB-LED package supports according to claim 1, it is characterised in that the metal base plate On be additionally provided with the supporting construction concordant with the pad height.
7. QFN surface-adhered types RGB-LED package supports according to claim 1, it is characterised in that the metal base plate For copper coin or iron plate, electroplate or gold-plated.
8. a kind of manufacture method of QFN surface-adhered type RGB-LED package supports as described in claim 1-7, its feature exists In comprising the following steps:
Step 1:Metal base plate is made into conducting wire, pad is made at the metal base plate back side, front and/or reverse side make Step;
Step 2:The supporting construction concordant with pad height is made at the back side of the metal base plate;
Step 3:Glue is wrapped on the metal base plate, the metal electrode of die bond and bonding wire is reserved, is formed with bowl shape Insulating frame.
9. the manufacture method of QFN surface-adhered types RGB-LED package supports according to claim 8, it is characterised in that also Including step 4:By plating metal on the metal electrode.
10. the manufacture method of QFN surface-adhered types RGB-LED package supports according to claim 8, it is characterised in that Also include step 5:Baking aging is carried out, baking temperature is 100-300 degrees Celsius.
CN201710194336.XA 2017-03-28 2017-03-28 QFN surface-adhered types RGB LED package supports and its manufacture method Pending CN107017329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710194336.XA CN107017329A (en) 2017-03-28 2017-03-28 QFN surface-adhered types RGB LED package supports and its manufacture method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710194336.XA CN107017329A (en) 2017-03-28 2017-03-28 QFN surface-adhered types RGB LED package supports and its manufacture method

Publications (1)

Publication Number Publication Date
CN107017329A true CN107017329A (en) 2017-08-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204289443U (en) * 2014-12-25 2015-04-22 深圳市安普光光电科技有限公司 Disjunctor full-color light-emitting diode and LED show module
US20150349224A1 (en) * 2014-05-29 2015-12-03 Nichia Corporation Light emitting device
CN206340574U (en) * 2017-03-28 2017-07-18 山东晶泰星光电科技有限公司 A kind of QFN surface-adhered types RGB LED package supports

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150349224A1 (en) * 2014-05-29 2015-12-03 Nichia Corporation Light emitting device
CN204289443U (en) * 2014-12-25 2015-04-22 深圳市安普光光电科技有限公司 Disjunctor full-color light-emitting diode and LED show module
CN206340574U (en) * 2017-03-28 2017-07-18 山东晶泰星光电科技有限公司 A kind of QFN surface-adhered types RGB LED package supports

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Effective date of registration: 20200610

Address after: 271200 intersection of Taihe Road and Hesheng Road, Xintai Economic Development Zone, Tai'an City, Shandong Province

Applicant after: Shandong jierunhong Photoelectric Technology Co.,Ltd.

Address before: 271200 Xintai Economic Development Zone, Shandong, Tai'an

Applicant before: SHANDONG PROSPEROUS STAR OPTOELECTRONICS Co.,Ltd.

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Application publication date: 20170804