CN109068481A - A kind of flexible soft board and its assembling jig facilitating test - Google Patents
A kind of flexible soft board and its assembling jig facilitating test Download PDFInfo
- Publication number
- CN109068481A CN109068481A CN201810974523.4A CN201810974523A CN109068481A CN 109068481 A CN109068481 A CN 109068481A CN 201810974523 A CN201810974523 A CN 201810974523A CN 109068481 A CN109068481 A CN 109068481A
- Authority
- CN
- China
- Prior art keywords
- board
- flexible soft
- soft board
- main via
- testing weld
- 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.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09418—Special orientation of pads, lands or terminals of component, e.g. radial or polygonal orientation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09427—Special relation between the location or dimension of a pad or land and the location or dimension of a terminal
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0147—Carriers and holders
- H05K2203/0165—Holder for holding a Printed Circuit Board [PCB] during processing, e.g. during screen printing
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The present invention relates to a kind of flexible soft boards and its assembling jig for facilitating test, including flexible soft board ontology, main via area and standard soldering board region are equipped on flexible soft board ontology, it is equipped with one group of electrical network in main via area and needs the electrical network of production or the pin of optical device tested main via hole correspondingly, the one-to-one standard soldering board of electrical network of one group with main via hole is equipped in standard soldering board region；Flexible soft board ontology further includes testing weld pad region, and testing weld pad region is arranged between main via area and standard soldering board region；One group and the one-to-one testing weld pad of standard soldering board electrical network are equipped in testing weld pad region.The beneficial effects of the present invention are: docking tolerance between board pads and testing weld pad by increasing, when testing, it is not easy the case where flexible soft board ontology connects bad docking or even dislocation press-fitting with the pad of circuit board occur, to improve the reliability and yields of optical device during the test.
Description
Technical field
The present invention relates to technical field of photo communication more particularly to a kind of flexible soft boards and its assembling jig for facilitating test.
Background technique
In fiber optic communication systems, optoelectronic transceiver integrated module has become the modular unit of communication system, as light is logical
Believe the raising of performance diversification and communication reliability, the integrated module of optical transceiver is gradually towards remote, high-speed, hot plug and intelligence
Direction can be changed to develop.The appearance of XFP solves the remote of the integrated module of optical transceiver, high-speed, hot plug and intelligence, at
For the important component of optical fiber telecommunications system high-end product.
In optical transceiving device, TOSA is connected by flexible circuit board and transceiver module；And due to flexible circuit board
Be easy to mobile, bending, torsion, when designing pad and route, if not doing corresponding fool proof and protection, also it is easy to appear
The serious quality problem such as failure welding, short circuit, plank and rupture of line.Again since multiple-plate flexibility is far below lamina,
In the production of the multipaths of photoelectric device and module and test, positioning and assembling repeatedly can cause to damage to flexible board, not only influence
Appearance, more influence performance, the flexible board for causing the product for having used flexible board that must more renew at high temperature before sale, high temperature
It is easy to again result in damage to product again during replacement so that failure.Flexible board and its press-fitting side due to high density pad
There are disadvantages described above for method, cause photoelectric device and communication module to be damaged or fail in manufacture and test process, fraction defective increases.
Summary of the invention
It is soft the technical problem to be solved by the present invention is in view of the drawbacks of the prior art, provide a kind of flexibility for facilitating test
Plate and its assembling jig.
The technical scheme to solve the above technical problems is that
According to one aspect of the present invention, a kind of flexible soft board for facilitating test, including flexible soft board ontology are provided, in institute
Flexible soft board ontology is stated equipped with main via area and standard soldering board region, one group of electrical net is equipped in the main via area
The electrical network main via hole correspondingly of network and the pin of optical device for needing to make or test, in the standard soldering board region
Inside it is equipped with one group of one-to-one standard soldering board of electrical network with the main via hole；The flexibility soft board ontology further includes test
Welding disking area, the testing weld pad region are arranged between the main via area and the standard soldering board region；In the survey
One group and the one-to-one testing weld pad of standard soldering board electrical network are equipped in test weld disk area；In the main via area
Surface be equipped with stiffening plate；It is longitudinally equipped with lengthening pad at the lower end center of the main via area, the lengthening pad
One end is connected with the main via hole, and the other end for lengthening pad is equipped with saturating tin hole.
The beneficial effects of the present invention are: testing weld pad region is arranged in main via area and standard soldering board region the present invention
Between, while not influencing standard soldering board distribution and electric property, do not need in the case where extending non-standard welding disking area
Meet the reliability and yields of flexible soft board ontology test, moreover it is possible to meet industry testing standard；Additionally by increase circuit board
Tolerance is docked between pad and testing weld pad, when testing flexible soft board, it is not easy to occur flexible soft board ontology and
The case where pad connection docking of circuit board is bad or even dislocation is press-fitted, mitigates the damage to flexible soft board during the test,
Replacement after the completion of test to flexible soft board is reduced, to improve the reliability and yields of optical device during the test；
By the way that stiffening plate is arranged, the top line of main via area can be protected, broken string risk is reduced；Lengthen setting for pad and saturating tin hole
The intensity that can reinforce at this is set, connection line is protected.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the testing weld pad is distributed in a ring around annulus.
The beneficial effect of above-mentioned further scheme is: can change the radius of annulus according to the quantity of testing weld pad, sufficiently
Using the space of flexible soft board, guarantee that the distance between each testing weld pad meets professional standard test request, moreover it is possible to increase electricity
Tolerance is docked between road plate pad and testing weld pad.
Further, the inner wall in the annulus is equipped with multiple grooves, multiple groove mal-distributions.
The beneficial effect of above-mentioned further scheme is: by the way that groove is arranged, the positioning of flexible soft board being facilitated to be press-fitted.
According to another aspect of the invention, a kind of assembling jig of flexible soft board for facilitating test is provided, for described
A kind of assembly for the flexible soft board facilitating test, including bottom plate, circuit board and guiding mechanism, the circuit board are fixed at institute
The top of bottom plate is stated, the guiding mechanism is fixed at the top of the circuit board；It is equipped at the middle part of the guiding mechanism
Partition, above the partition and the guiding mechanism of lower section is engraved structure；It is set in the inner wall of the guiding mechanism
There is a pair of of sliding slot, the sliding slot is located at the lower section of the partition；Further include connecting column, is fixed in the bottom of the connecting column
Lower platen, the top of the connecting column pass through the partition and stretch out, and are fixed with top board at the top of the connecting column；Institute
The both ends for stating lower platen are slidably matched with a pair of sliding slot respectively；The flexibility soft board ontology is arranged under the lower platen
Side.
The beneficial effects of the present invention are: flexible soft board ontology to be correspondingly arranged to the lower section of lower platen, positioning is fixed, and is utilized
Top board and connecting column, which push, pushes lower platen, thus move down lower platen and push down the testing weld pad of flexible soft board ontology, from
And facilitates and carry out subsequent assembly；The door type structure that guiding mechanism is centrosymmetric makes top board and connecting column be applied to pushing
Pressure on plate is balanced, improves the assembly precision of flexible soft board ontology.
Based on the above technical solution, the present invention can also be improved as follows.
Further, being equipped with reset spring between the top board and the partition, the reset spring is set in described
On connecting column.
The beneficial effect of above-mentioned further scheme is: by the way that reset spring is arranged, pushing to top board and connecting column
Plate plays the role of buffering, reduces impact of the lower lock block to flexible soft board ontology, in addition reset spring can also play reset and push
The effect of plate, is simple and efficient.
Further, being equipped with pressure eccentric sphere at the top of the top board, handle is connected on the pressure eccentric sphere.
The beneficial effect of above-mentioned further scheme is: pressure eccentric sphere can be made to push top board by swinging handle, from
And connecting column and lower platen are moved down, it is crimped together flexible soft board closely with circuit board.
Further, the bottom of the lower platen be equipped with multiple insulation pressure heads, multiple insulation pressure heads respectively with it is multiple
The position of the testing weld pad is corresponding.
Further, the insulation pressure head is made of insulating elastic material.
The beneficial effect of above-mentioned further scheme is: testing weld pad can either be accurately pushed down, and testing weld pad will not be damaged by pressure,
Influence circuit.
Further, being equipped with positioning column on the circuit board, the positioning column is located at the lower section of the lower platen；Described
The outside of positioning column is unevenly provided with multiple boss, and multiple boss are corresponded with multiple grooves respectively.
The beneficial effect of above-mentioned further scheme is: need to only correspond boss and groove, that is, can guarantee testing weld pad
It is accurately docked with board pads, there is a situation where dislocation short circuits between the pad for effectively avoiding electrical network different.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the flexible soft board of the present invention；
Fig. 2 is the structural schematic diagram in testing weld pad region of the present invention；
Fig. 3 is the structural schematic diagram of assembling jig of the present invention；
Fig. 4 is the structural schematic diagram of positioning column of the present invention；
In attached drawing, component names representated by each label are as follows:
1, bottom plate, 2, circuit board, 21, positioning column, 211, boss, 3, guiding mechanism, 4, partition, 5, reset spring, 6, pressure
Power eccentric sphere, 61, handle, 7, top board, 8, lower platen, 81, insulation pressure head, 9, connecting column, 100, flexible soft board ontology, 110,
Main via area, 111, main via hole, 112, stiffening plate, 113, lengthening pad, 114, saturating tin hole, 120, testing weld pad region,
121, testing weld pad, 122, annulus, 123, groove, 130, standard soldering board region, 131, standard soldering board, 132, reinforcement pad.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of flexible soft board for facilitating test comprising flexible soft board ontology 100, in the flexible soft board
Ontology 100 is equipped with main via area 110 and standard soldering board region 130, electrical equipped with one group in the main via area 110
The electrical network main via hole 111 correspondingly of network and the pin of optical device for needing to make or test is welded in the standard
The one-to-one standard soldering board 131 of electrical network of one group with the main via hole 111 is equipped in disk area 130；The standard weldering
Disk 131 meets professional standard regulation.
Stiffening plate 112 is equipped on the surface of the main via area 110；In the lower end of the main via area 110
The heart, which is longitudinally equipped with, lengthens pad 113, and described one end for lengthening pad 113 is connected with the main via hole 111, the lengthening pad
113 other end is equipped with saturating tin hole 114.
The thickness range of the stiffening plate 112 is 0.3mm to 0.6mm；The diameter range in the tin hole 114 is 0.42mm
To 0.56mm.
The flexibility soft board ontology 100 further includes testing weld pad region 120, and the testing weld pad region 120 is arranged in institute
It states between main via area 110 and the standard soldering board region 130；One group and institute are equipped in the testing weld pad region 120
State the one-to-one testing weld pad 121 of 131 electrical network of standard soldering board.
The testing weld pad 121 is distributed in a ring around annulus 122；It can be according to the change of 121 quantity of testing weld pad
Change the annular radius for changing the annulus 122, is wanted with guaranteeing that the distance between each testing weld pad 121 meets industry testing standard
It asks.
The size of each testing weld pad 121 is greater than the size of each standard soldering board 131, the two neighboring survey
Interval between test weld disk 121 is greater than the interval between the two neighboring standard soldering board 131, reduces the several of dislocation connection
Rate.
Be symmetrically arranged with one group of reinforcement pad 132 in the two sides in the standard soldering board region 130, can reinforce flexible soft board with
Connection between mainboard.
As shown in Fig. 2, the inner wall in the annulus 122 is equipped with multiple grooves 123, multiple 123 asymmetric points of grooves
Cloth.
In the present embodiment, specifically, the quantity of 111 lower end of main via hole, one row is preferably 6, be denoted as A11, A12,
A13,A14,A15,A16；The quantity of the standard soldering board 131 is preferably 6, is denoted as A21, A22, A23, A24, A25, A26；Institute
The quantity for stating testing weld pad 121 is preferably 6, is denoted as A31, A32, A33, A34, A35, A36, i.e., the described main via hole 111A11 is extremely
A16 passes through circuit line respectively and connects one to one with the standard soldering board 131A21 to A26, and the testing weld pad 121A31 is extremely
A36 passes through circuit line respectively and connects one to one with the standard soldering board 131A21 to A26.
As shown in Figure 3 and Figure 4, a kind of assembling jig for the flexible soft board facilitating test a kind of facilitates test for described
Flexible soft board assembly comprising bottom plate 1, circuit board 2 and guiding mechanism 3, the circuit board 2 are fixed at the bottom plate
1 top, the guiding mechanism 3 are fixed at the top of the circuit board 2；The middle part of the guiding mechanism 3 be equipped with every
Plate 4, above the partition 4 and the guiding mechanism 3 of lower section is engraved structure；In the inner wall of the guiding mechanism 3
Equipped with a pair of of sliding slot, the sliding slot is located at the lower section of the partition 4；It further include connecting column 9, it is solid in the bottom of the connecting column 9
Surely it is equipped with lower platen 8, the top of the connecting column 9 passes through the partition 4 and stretches out, and fixation is set at the top of the connecting column 9
There is top board 7；The both ends of the lower platen 8 are slidably matched with a pair of sliding slot respectively；The flexibility soft board ontology 100 is arranged
In the lower section of the lower platen 8.
Reset spring 5 is equipped between the top board 7 and the partition 4, the reset spring 5 is set in the connection
On column 9.
It is equipped with pressure eccentric sphere 6 at the top of the top board 7, is connected with handle 61 on the pressure eccentric sphere 6.
The bottom of the lower platen 8 be equipped with multiple insulation pressure heads 81, multiple insulation pressure heads 81 respectively with multiple institutes
The position for stating testing weld pad 121 is corresponding.
The insulation pressure head 81 is made of insulating elastic material, can either accurately push down testing weld pad 121, and will not damage by pressure
Testing weld pad 121, influences circuit.
Positioning column 21 is equipped on the circuit board 2, the positioning column 21 is located at the lower section of the lower platen 8；Described
The outside of positioning column 21 is unevenly provided with multiple boss 211, multiple boss 211 respectively with multiple grooves 123 1
One is corresponding.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of flexible soft board for facilitating test, it is characterised in that: including flexible soft board ontology (100), in the flexible soft board
Ontology (100) is equipped with main via area (110) and standard soldering board region (130), is equipped in the main via area (110)
The electrical network of one group of electrical network and the pin of optical device for needing to make or test main via hole (111) correspondingly,
The one-to-one standard soldering board of electrical network of one group with the main via hole (111) is equipped in the standard soldering board region (130)
(131)；The flexibility soft board ontology (100) further includes testing weld pad region (120), testing weld pad region (120) setting
Between the main via area (110) and the standard soldering board region (130)；It is set in the testing weld pad region (120)
There are one group and the one-to-one testing weld pad of the standard soldering board (131) electrical network (121)；In the main via area
(110) surface is equipped with stiffening plate (112)；Lengthening pad is longitudinally equipped at the lower end center of the main via area (110)
(113), described one end for lengthening pad (113) is connected with the main via hole (111), the other end for lengthening pad (113)
Equipped with saturating tin hole (114).
2. a kind of flexible soft board for facilitating test according to claim 1, it is characterised in that: the testing weld pad (121) is enclosed
It is distributed in a ring around annulus (122).
3. a kind of flexible soft board for facilitating test according to claim 1, it is characterised in that: in the interior of the annulus (122)
Wall is equipped with multiple grooves (123), multiple groove (123) mal-distributions.
4. a kind of assembling jig for the flexible soft board for facilitating test, described a kind of facilitate test for claims 1 to 3 to be any
The assembly of flexible soft board, it is characterised in that: including bottom plate (1), circuit board (2) and guiding mechanism (3), the circuit board (2) is solid
Fixed to be arranged at the top of the bottom plate (1), the guiding mechanism (3) is fixed at the top of the circuit board (2)；Described
The middle part of guiding mechanism (3) is equipped with partition (4), and the guiding mechanism (3) being located above the partition (4) with lower section is to engrave
Hollow structure；It is equipped with a pair of of sliding slot in the inner wall of the guiding mechanism (3), the sliding slot is located at the lower section of the partition (4)；Also wrap
Connecting column (9) are included, are fixed with lower platen (8) in the bottom of the connecting column (9), the top of the connecting column (9) passes through institute
It states partition (4) and stretches out, top board (7) are fixed at the top of the connecting column (9)；The both ends of the lower platen (8) point
It is not slidably matched with a pair of sliding slot；The flexibility soft board ontology (100) is arranged in the lower section of the lower platen (8).
5. a kind of assembling jig for the flexible soft board for facilitating test according to claim 4, it is characterised in that: in the upper pressure
Reset spring (5) are equipped between plate (7) and the partition (4), the reset spring (5) is set on the connecting column (9).
6. a kind of assembling jig for the flexible soft board for facilitating test according to claim 4, it is characterised in that: in the upper pressure
The top of plate (7) is equipped with pressure eccentric sphere (6), is connected with handle (61) on the pressure eccentric sphere (6).
7. a kind of assembling jig for the flexible soft board for facilitating test according to claim 4, it is characterised in that: in the pushing
The bottom of plate (8) be equipped with multiple insulation pressure heads (81), multiple insulation pressure heads (81) respectively with multiple testing weld pads
(121) position is corresponding.
8. a kind of assembling jig for the flexible soft board for facilitating test according to claim 7, it is characterised in that: the insulation pressure
Head (81) is made of insulating elastic material.
9. a kind of assembling jig for the flexible soft board for facilitating test according to claim 4, it is characterised in that: in the circuit
Plate (2) is equipped with positioning column (21), and the positioning column (21) is located at the lower section of the lower platen (8)；In the positioning column (21)
Outside be unevenly provided with multiple boss (211), multiple boss (211) respectively with multiple grooves (123) one by one
It is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974523.4A CN109068481A (en) | 2018-08-24 | 2018-08-24 | A kind of flexible soft board and its assembling jig facilitating test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974523.4A CN109068481A (en) | 2018-08-24 | 2018-08-24 | A kind of flexible soft board and its assembling jig facilitating test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109068481A true CN109068481A (en) | 2018-12-21 |
Family
ID=64756696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810974523.4A Withdrawn CN109068481A (en) | 2018-08-24 | 2018-08-24 | A kind of flexible soft board and its assembling jig facilitating test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109068481A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040077188A1 (en) * | 2002-10-08 | 2004-04-22 | Alps Electric Co., Ltd. | Card connector assembly including contact lands having no damage |
| CN202103947U (en) * | 2011-05-17 | 2012-01-04 | 索尔思光电（成都）有限公司 | Flexible circuit board applied to an XFP transceiver module |
| US20140291850A1 (en) * | 2013-03-28 | 2014-10-02 | Stmicroelectronics S.R.I. | Method for manufacturing electronic devices |
| CN105430898A (en) * | 2015-12-29 | 2016-03-23 | 广东欧珀移动通信有限公司 | Pad structure, circuit board and mobile terminal using pad structure |
| CN105517337A (en) * | 2015-11-25 | 2016-04-20 | 武汉光迅科技股份有限公司 | High-reliability flexible plate and assembling system thereof |
| CN107251663A (en) * | 2015-02-12 | 2017-10-13 | 古河电气工业株式会社 | Flexible base board and optical module |
-
2018
- 2018-08-24 CN CN201810974523.4A patent/CN109068481A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040077188A1 (en) * | 2002-10-08 | 2004-04-22 | Alps Electric Co., Ltd. | Card connector assembly including contact lands having no damage |
| CN202103947U (en) * | 2011-05-17 | 2012-01-04 | 索尔思光电（成都）有限公司 | Flexible circuit board applied to an XFP transceiver module |
| US20140291850A1 (en) * | 2013-03-28 | 2014-10-02 | Stmicroelectronics S.R.I. | Method for manufacturing electronic devices |
| CN107251663A (en) * | 2015-02-12 | 2017-10-13 | 古河电气工业株式会社 | Flexible base board and optical module |
| CN105517337A (en) * | 2015-11-25 | 2016-04-20 | 武汉光迅科技股份有限公司 | High-reliability flexible plate and assembling system thereof |
| CN105430898A (en) * | 2015-12-29 | 2016-03-23 | 广东欧珀移动通信有限公司 | Pad structure, circuit board and mobile terminal using pad structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181221 |