CN103915696B - Connector and connector assembly - Google Patents

Connector and connector assembly Download PDF

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Publication number
CN103915696B
CN103915696B CN201310004916.XA CN201310004916A CN103915696B CN 103915696 B CN103915696 B CN 103915696B CN 201310004916 A CN201310004916 A CN 201310004916A CN 103915696 B CN103915696 B CN 103915696B
Authority
CN
China
Prior art keywords
connector
housing
circuit board
supporter
flat spring
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.)
Active
Application number
CN201310004916.XA
Other languages
Chinese (zh)
Other versions
CN103915696A (en
Inventor
赵梦龙
龚树强
张斌
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.)
Huawei Device Co Ltd
Huawei Device Shenzhen Co Ltd
Original Assignee
Huawei Device 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 Huawei Device Co Ltd filed Critical Huawei Device Co Ltd
Priority to CN201310004916.XA priority Critical patent/CN103915696B/en
Priority to PCT/CN2014/070091 priority patent/WO2014106474A2/en
Publication of CN103915696A publication Critical patent/CN103915696A/en
Application granted granted Critical
Publication of CN103915696B publication Critical patent/CN103915696B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70Coupling devices
    • H01R12/71Coupling devices for rigid printing circuits or like structures
    • H01R12/72Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70Coupling devices
    • H01R12/71Coupling devices for rigid printing circuits or like structures
    • H01R12/72Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H01R12/732Printed circuits being in the same plane

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention discloses a kind of connector, the connector includes first circuit board, contact flat spring and supporter, the first circuit board includes first surface, the supporter is fixedly connected on the first surface of the first circuit board, and the contact flat spring is arranged at the intermediate layer on the side of the first surface.In addition, the present invention also provides another connector and connector assembly.The connector assembly simplifies the structure of connector, the component of connector is directly molded on first circuit board and second circuit board, so as to reduce the number of elements of connector, the size of connector is reduced, further ultrathin, miniaturization beneficial to electronic equipment.

Description

Connector and connector assembly
Technical field
The present invention relates to electronic technology field, more particularly to a kind of connector and connector assembly.
Background technology
Existing electronic equipment realizes the connection of circuit frequently with connector, and connector is manufactured using modularity, Ran Houzai Fixed on circuit board.As the ultrathin of equipment is, it is necessary to reduce the thickness of each component.Existing connector thickness It is larger, and structure is more complicated, limits further ultrathin, the miniaturization of electronic equipment.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is, connector construction be present for solving prior art answers It is miscellaneous, size is larger, the problem of being unfavorable for ultrathin.
On the one hand, there is provided a kind of connector, the connector include first circuit board, contact flat spring and supporter, institute State first circuit board to be made up of plastic material including first surface and the 3rd surface being oppositely arranged, the supporter, the branch Support body is fixedly connected on the first surface of the first circuit board, so as to be not take up the 3rd surface, the supporter The other end is stretched out by the first circuit board and for being inserted into another connector, the contact flat spring is arranged at the support On body.
In the first possible implementation, the supporter is rectangular plate-like structure.
In second of possible implementation, the supporter opens up accepting groove, and the contact flat spring is contained in described In accepting groove.
With reference to a kind of possible implementation of any of the above, in the third possible implementation, the connector is also Including the first housing, first housing is fixed on the first surface, and is also located at the supporter backwards to described The side on one surface.
With reference to a kind of possible implementation of any of the above, in the 4th kind of possible implementation, the supporter is opened If accepting groove, the contact flat spring is contained in the accepting groove, and described contact flat spring one end and the first circuit board are electrical Connection, the contact flat spring other end are arranged at the intermediate layer in the one side of the first surface.
With reference to the third possible implementation, in the 5th kind of possible implementation, the first housing both sides add Two pins of work, the first circuit board correspond to described two pins and open up two positioning holes, and the pin inserts in described two In positioning hole.
With reference to the third possible implementation, in the 6th kind of possible implementation, the first housing both sides card Together in the supporter both sides.
On the other hand, there is provided a kind of connector, the connector include second circuit board, electrical contact and second shell Body, the second circuit board include second surface, and the electrical contact is formed directly on the second surface, the second shell Body is fixedly connected on the second surface, and second housing is located on the electrical contact.
In the first possible implementation, second circuit board is made up of stacked polymer matrix composites.
With reference to a kind of possible implementation of any of the above, in second of possible implementation, second housing For a few font platy structures, the intermediate raised portion of second housing corresponds to the electrical contact, and the two of second housing End is fixed on the second surface.
With reference to a kind of possible implementation of any of the above, in the third possible implementation, second housing Multiple angles are processed, the second surface correspondingly opens up multiple positioning holes, and each angle is inserted in each positioning hole.
Another further aspect, there is provided a kind of connector assembly, it includes the first connector and the second connector, and described first connects Connecing device includes first circuit board, contact flat spring and supporter, the first circuit board include first surface and be oppositely arranged the Three surfaces, the supporter are fixedly connected on the first surface of the first circuit board, so as to be not take up the 3rd surface, The contact flat spring is arranged at the intermediate layer in the one side of the first surface;The connector includes second circuit Plate, electrical contact and the second housing, the second circuit board include second surface, and the electrical contact is formed directly into described On two circuit boards, and the electrical contact and the contact flat spring correspond, and second housing is fixedly connected on described the On two surfaces, second housing is located on the electrical contact, and second housing is used to be arranged the supporter.
In the first possible implementation, second housing is a few font platy structures, second housing Intermediate raised portion corresponds to the electrical contact, and the intermediate raised portion of second housing is arranged the supporter, described The both ends of second housing are fixed on the second surface.
In second of possible implementation, second circuit board is made up of stacked polymer matrix composites.
In the third possible implementation, second housing processes multiple angles, and the second surface is corresponding Multiple positioning holes are opened up, each angle is inserted in each positioning hole.
In the 4th kind of possible implementation, second housing is ㄩ shape platy structures, the second housing both ends It is directly bonded on second surface.
With reference to the first possible implementation, in the 5th kind of possible implementation, the connector includes first Housing, first housing are fixed on the first surface, and are only located at the supporter backwards to the first surface Side, first housing are contained in the intermediate raised portion of second housing.
In the 6th kind of possible implementation, the first circuit board includes the be oppositely arranged with the first surface Three surfaces, the second circuit board includes the 4th surface being oppositely arranged with the second surface, when the supporter inserts in institute When stating in second shell body, the 3rd surface is less than or equal to 0.4mm with the 4th surface height difference.
The connector assembly that embodiment of the present invention provides simplifies the structure of connector, by the component of connector directly into Type, so as to reduce the number of elements of connector, reduces the size of connector on first circuit board and second circuit board, profit Further ultrathin, miniaturization in electronic equipment.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for the connector assembly that first embodiment of the invention provides;
Fig. 2 is the schematic diagram of the connector of Fig. 1 connector assembly;
Fig. 3 is the schematic diagram after Fig. 1 connector assembly connection;
Fig. 4 is the schematic diagram of the connector of Fig. 1 connector assembly;
Fig. 5 is the schematic diagram for the connector assembly that second embodiment of the invention provides;
Fig. 6 is the schematic diagram of the connector of Fig. 5 connector assembly.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
In embodiments of the present invention, the component of connector and connector is directly molded on first circuit board and second circuit On plate, so as to reduce the number of elements of connector, ultrathin is realized beneficial to electronic equipment.
Refer to Fig. 1 to Fig. 3, the connector assembly 100 that first embodiment of the invention provides, the connector assembly 100 include connector 10 and connector 20.
The connector 10 includes first circuit board 11, supporter 12, the housing 14 of contact flat spring 13 and first.Described first Circuit board 11 includes first surface 110 and the 3rd surface 111 being oppositely arranged.The first circuit board 11 can be by stacked tree Resin-based composite is made.Certainly, in other embodiments, the first circuit board 11 can also by paper-based composite material, Ceramic material is made.
The supporter 12 is made up of plastic material, and the supporter 12 is fixedly connected on the of the first circuit board 11 On one surface 110, so as to be not take up the 3rd surface 111, occupancy of the connector 10 to electronic device space is reduced.This In embodiment, the supporter 12 is rectangular plate-like structure.Described one end 120 of supporter 12 is welded in the first surface 110, the other end 121 of supporter 12 is stretched out by the first circuit board 11.The supporter 12 opens up multiple accepting grooves 122.Certain supporter 12 can also be made up of other insulating materials, such as ceramic material.
The contact flat spring 13 is arranged on the supporter 12.In present embodiment, the contact flat spring 13 is contained in In the accepting groove 122.Described one end 130 of contact flat spring 13 is electrically connected with the first circuit board 11.The contact flat spring 13 other ends 131 are arranged at the supporter 12 towards the side of the first surface 110, for electrical with the connector 20 Connection.
First housing 14 is made of metal, and first housing 14 is fixed on the first surface 110, and is only covered The supporter 12 is located at backwards to the side of the first surface 110.First housing 14 is used to improve the supporter 12 Intensity.Specifically, first housing 14 is posted by the supporter 12 backwards to the side of the first circuit board 11.It is described The both sides of first housing 14 process two pin 14a.The corresponding described two pin 14a of the first circuit board 11 open up two positioning Hole 11a, the pin 14a are inserted in described two positioning hole 11a.In order to improve the supporter 312 and first housing 314 bonding strength, the both sides of the first housing 14 are sticked in the both sides of supporter 12.Specifically, first housing 14 Both sides also open up snap fit 14b, and the both sides of supporter 12 process two necks 12a, described two neck 12a and are sticked in described two respectively In individual snap fit 14b.Certainly, in other embodiments, first housing 14 can also omit.And in other embodiment In, first housing 14 can also be made up of other strength materials, such as ceramic material.
The connector 10 can be by being fixed on first circuit board 11 by the supporter 12 with the contact flat spring 13 It is upper that electric linkage function can be achieved.So as to avoid existing connector due to number of elements it is more caused by thickness compared with The problem of big, be advantageous to reduce the thickness of the connector 10, realize ultrathin.
In addition, the connector 10 can also be by being only located at the supporter 12 backwards to the first surface 110 Side, can both improve the intensity of the connector 10, and so avoid caused by the existing both sides of supporter 12 are respectively provided with housing The problem of thickness is larger.
Also referring to Fig. 1, Fig. 3 and Fig. 4, the connector 20 includes second circuit board 21, electrical contact 22 and second Housing 23.The second circuit board 21 includes the surface 211 of second surface 210 and the 4th.The second circuit board 21 can be by layer Stacked polymer matrix composites are made.Certainly, in other embodiments, the second circuit board 21 can also be that paper substrate is compound Material, ceramic material.
The electrical contact 22 is arranged on the second surface 210, is corresponded with the contact flat spring 13.This implementation In mode, the electrical contact 22 can be by etching gold-plated formation.Because the electrical contact 22 is formed directly into described On the second surface 210 of two circuit boards 21, the plastic core of existing connector is eliminated, it is possible to do the complete machine of electronic equipment It is thinner.Certainly, in other embodiments, the electrical contact 22 can also be formed by surface soldered copper sheet.
Second housing 23 is fixedly connected on the second surface 210, and second housing 23 is located at the electricity On gas contact 22, second housing 23 is used to be arranged the supporter 12.Second housing 23 is used to ensure the connection Spacing and connection when device 10 inserts, while ensure the contact flat spring 13 of the connector 10 and electrically touching for the connector 20 22 reliable contacts of point.In present embodiment, second housing 23 is made of metal, and second housing 23 is welded in described On two surfaces 210.Specifically, second housing 23 is shape of chinese word Ji platy structure, the intermediate projections portion of second housing 23 Divide the 230 corresponding electrical contacts 22, the both ends 231 of second housing 23 are fixed on the second surface 210.Described The intermediate raised portion 230 of two housings 23 is sheathed on the supporter 12 and first housing 14.Certainly, implement at other In mode, second housing 23 can also be made of plastic cement.Second housing 23 can also use bonding, fastened by screw It is fixed on any one or more mode in snap-in structure on the second surface 210.
Second housing 23 processes multiple angle 231a.The second surface 210 is corresponding to open up multiple positioning holes 210a.Each angle 231a is inserted in each positioning hole 210a.Certainly, in other embodiments, the second shell Body 23 can also be made of nonmetallic material, be sticked in by snap-in structure on the second surface 210.
Second surface of the connector 20 due to the electrical contact 22 to be formed directly into the second circuit board 21 On 210, so the plastic core of existing connector can be omitted, and then the complete machine of electronic equipment can be done thinner.
When the supporter 12 is inserted in second housing 23, the height of the 3rd surface 111 and the 4th surface 211 Poor h is less than or equal to 0.4mm, and so as to realize the fit dimension of the connector assembly 100 minimum, while electronic equipment is whole Machine can be minimum.
The connector assembly 200 is by the structure of the simplification connector 10 and connector 20, so as to the company of reduction The thickness fit dimension of device is connect, the technique for simplifying connector manufacture reduces the cost of connector, and can be beneficial to the ultra-thin of equipment Change.
Fig. 5 and Fig. 6 is referred to, the connector assembly 200 provided in second embodiment of the invention, the connector assembly 200 is essentially identical with the connector assembly 100 that is provided in first embodiment, and its difference is, connector 310 omits institute State the first housing.Second housing 323 of the connector assembly 200 is ㄩ shape platy structures.The both ends of second housing 323 323a is directly bonded on second surface 320.
The connector assembly that embodiment of the present invention provides simplifies the structure of connector, by the group of connector and connector Part is directly molded on first circuit board and second circuit board, so as to reduce the number of elements of connector, reduces connector Size, further ultrathin, miniaturization beneficial to electronic equipment.
Above disclosure is only preferred embodiment of present invention, can not limit the right model of the present invention with this certainly Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.

Claims (13)

  1. A kind of 1. connector, it is characterised in that the connector includes first circuit board, contact flat spring and supporter, and described One circuit board includes first surface and the 3rd surface being oppositely arranged, the supporter are fixedly connected on the first circuit board On first surface, so as to be not take up the 3rd surface, the other end of the supporter is stretched out and used by the first circuit board In being inserted into another connector, the contact flat spring is arranged at the intermediate layer on the side of the first surface;
    The connector also includes the first housing, and first housing is fixed on the first surface, and is only located at described Supporter is backwards to the side of the first surface.
  2. 2. connector as claimed in claim 1, it is characterised in that the supporter is rectangular plate-like structure.
  3. 3. connector as claimed in claim 1, it is characterised in that the supporter opens up accepting groove, and the contact flat spring is received It is dissolved in the accepting groove.
  4. 4. the connector as described in claims 1 to 3 any one, it is characterised in that the supporter opens up accepting groove, described Contact flat spring is contained in the accepting groove, and described contact flat spring one end is electrically connected with the first circuit board, the contact The shell fragment other end is arranged at the intermediate layer in the one side of the first surface.
  5. 5. connector as claimed in claim 1, it is characterised in that the first housing both sides process two pins, and described the One circuit board corresponds to described two pins and opens up two positioning holes, and the pin is inserted in described two positioning holes.
  6. 6. connector as claimed in claim 1, it is characterised in that the first housing both sides are sticked in the supporter two Side.
  7. 7. a kind of connector assembly, it includes the first connector and the second connector, it is characterised in that the first connector bag First circuit board, contact flat spring and supporter are included, the first circuit board includes first surface and the 3rd surface being oppositely arranged, The supporter is fixedly connected on the first surface of the first circuit board, so as to be not take up the 3rd surface, the branch The other end of support body is stretched out by the first circuit board and for being inserted into another connector, the contact flat spring is arranged at institute Intermediate layer is stated in the one side of the first surface;Second connector includes second circuit board, electrical contact and second Housing, the second circuit board include second surface, and the electrical contact is formed directly on the second circuit board, and described Electrical contact is corresponded with the contact flat spring, and second housing is fixedly connected on the second surface, and described second Housing is located on the electrical contact, and second housing is used to be arranged the supporter.
  8. 8. connector assembly according to claim 7, it is characterised in that second housing is a few font platy structures, The intermediate raised portion of second housing corresponds to the electrical contact, and the intermediate raised portion of second housing is arranged institute Supporter is stated, the both ends of second housing are fixed on the second surface.
  9. 9. connector assembly according to claim 7, it is characterised in that second circuit board is by stacked resin base composite wood Material is made.
  10. 10. connector assembly according to claim 7, it is characterised in that second housing processes multiple angles, institute State second surface and correspondingly open up multiple positioning holes, each angle is inserted in each positioning hole.
  11. 11. connector assembly according to claim 7, it is characterised in that second housing is ㄩ shape platy structures, institute The second housing both ends are stated to be directly bonded on second surface.
  12. 12. connector assembly according to claim 8, it is characterised in that first connector includes the first housing, institute State the first housing to be fixed on the first surface, and be only located at the supporter backwards to the side of the first surface, institute State the intermediate raised portion that the first housing is contained in second housing.
  13. 13. connector assembly according to claim 7, it is characterised in that the first circuit board includes and described first The 3rd surface that surface is oppositely arranged, the second circuit board include the 4th surface being oppositely arranged with the second surface, when When the supporter is inserted in the second shell body, the 3rd surface is less than or equal to 0.4mm with the 4th surface height difference.
CN201310004916.XA 2013-01-07 2013-01-07 Connector and connector assembly Active CN103915696B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310004916.XA CN103915696B (en) 2013-01-07 2013-01-07 Connector and connector assembly
PCT/CN2014/070091 WO2014106474A2 (en) 2013-01-07 2014-01-03 Connector and connector assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310004916.XA CN103915696B (en) 2013-01-07 2013-01-07 Connector and connector assembly

Publications (2)

Publication Number Publication Date
CN103915696A CN103915696A (en) 2014-07-09
CN103915696B true CN103915696B (en) 2018-02-06

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ID=51041189

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310004916.XA Active CN103915696B (en) 2013-01-07 2013-01-07 Connector and connector assembly

Country Status (2)

Country Link
CN (1) CN103915696B (en)
WO (1) WO2014106474A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108346894B (en) * 2017-01-24 2024-05-07 泰科电子(上海)有限公司 Connector housing, electric connector, counter connector and connector assembly
CN109524812A (en) * 2017-09-19 2019-03-26 群光电子股份有限公司 Plug-in device and its structure-reinforced module

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2517134Y (en) * 2001-08-24 2002-10-16 富士康(昆山)电脑接插件有限公司 Thin electric connector subassembly
CN202496134U (en) * 2012-01-18 2012-10-17 原瑞电池科技股份有限公司 Combined device of thin battery and circuit board

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796839B1 (en) * 2003-03-24 2004-09-28 Hon Hai Precision Ind. Co., Ltd. Electrical connector
CN200947478Y (en) * 2006-09-19 2007-09-12 番禺得意精密电子工业有限公司 Electrical connector assembly
CN201117910Y (en) * 2007-11-19 2008-09-17 实盈电子(东莞)有限公司 Structure of electric connector
CN201576776U (en) * 2009-11-05 2010-09-08 富士康(昆山)电脑接插件有限公司 Electric connector and component thereof
US8366469B2 (en) * 2010-08-18 2013-02-05 Carnevali Jeffrey D Connector isolator system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2517134Y (en) * 2001-08-24 2002-10-16 富士康(昆山)电脑接插件有限公司 Thin electric connector subassembly
CN202496134U (en) * 2012-01-18 2012-10-17 原瑞电池科技股份有限公司 Combined device of thin battery and circuit board

Also Published As

Publication number Publication date
WO2014106474A3 (en) 2014-08-28
CN103915696A (en) 2014-07-09
WO2014106474A2 (en) 2014-07-10

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Address after: 518129 Building 2, B District, Bantian HUAWEI base, Longgang District, Shenzhen, Guangdong.

Patentee after: Huawei terminal (Shenzhen) Co.,Ltd.

Address before: 518129 Building 2, B District, Bantian HUAWEI base, Longgang District, Shenzhen, Guangdong.

Patentee before: HUAWEI DEVICE Co.,Ltd.

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Effective date of registration: 20181218

Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province

Patentee after: HUAWEI DEVICE Co.,Ltd.

Address before: 518129 Building 2, B District, Bantian HUAWEI base, Longgang District, Shenzhen, Guangdong.

Patentee before: Huawei terminal (Shenzhen) Co.,Ltd.