CN108732439A - A kind of simulation complete machine examines the measurement jig and method of the anti-ESD abilities of fingerprint module - Google Patents
A kind of simulation complete machine examines the measurement jig and method of the anti-ESD abilities of fingerprint module Download PDFInfo
- Publication number
- CN108732439A CN108732439A CN201810313639.3A CN201810313639A CN108732439A CN 108732439 A CN108732439 A CN 108732439A CN 201810313639 A CN201810313639 A CN 201810313639A CN 108732439 A CN108732439 A CN 108732439A
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- fingerprint module
- pedestal
- pressing plate
- complete machine
- fixing groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Image Input (AREA)
- Telephone Set Structure (AREA)
Abstract
The present invention relates to the measurement jigs that a kind of simulation complete machine examines the anti-ESD abilities of fingerprint module, including a pressing plate, one pedestal, four angles of the pressing plate and the pedestal are both provided with magnet piece, the pressing plate and the pedestal are attracted by the magnet piece, the centre position of the pedestal is equipped with the fingerprint module fixing groove placed for fingerprint module, the outside of the fingerprint module fixing groove is equipped with the first empty avoiding area, that face that the pressing plate is in contact with the pedestal is equipped with the second empty avoiding area, the pressing plate is equipped with trepanning, the position of the trepanning is located at the top of the fingerprint module fixing groove；The beneficial effects of the invention are as follows：A kind of simulation complete machine effect of the present invention examines the measurement jig of the anti-ESD of fingerprint module with small, it is easy to carry, it is easy to use the features such as, and pass through high-volume verify, the ESD measurement jigs can effectively simulate complete machine, effectively examine the anti-ESD abilities of fingerprint module.
Description
Technical field
The present invention relates to module test fixture fields more particularly to a kind of simulation complete machine to examine the anti-ESD abilities of fingerprint module
Measurement jig and method.
Background technology
With the development of technology, bio-identification function is used widely on the electronic products such as mobile phone, particularly, will be referred to
Line identifies that module increasingly increases as the demand of mobile phone unlock, payment.However, in existing bio-identification module product, such as
Fruit module design is unreasonable, causes the anti-ESD of module itself (Electro-Static discharge, Electro-static Driven Comb) ability weak,
In particular circumstances using there are the risks that fingerprint function fails due to by big voltage or high current.Therefore fingerprint module is anti-
ESD tests become particularly important with management and control, judge that can the foundation of the anti-ESD performances of a fingerprint module be to pass through in the industry at present
IEC61000-4-2ESD testing standards, and the determination of the environment of the anti-ESD of module must simulate complete machine just as much as possible so that test
As a result become significant, can be only achieved the purpose of inspection.It is aluminum alloy material and complete machine that the present invention, which is by analogue mobile phone rear shell,
What structure was designed.
Invention content
For the present situation of the prior art, a kind of bio-identification module simulation complete machine structure environment and material are provided, it can
The anti-ESD abilities of enough validity test fingerprint modules, meanwhile, this ESD measurement jigs are small, pressed using magnet-type, convenient for taking
It puts module and leakproofness is good, can effectively simulate complete machine environment.
The technical solution adopted by the present invention is：A kind of simulation complete machine examines the measurement jig of the anti-ESD abilities of fingerprint module, packet
Include a pressing plate, a pedestal, four angles of the pressing plate and the pedestal are both provided with magnet piece, and the pressing plate and the pedestal are logical
Cross that the magnet piece is attracted, the centre position of the pedestal is equipped with the fingerprint module fixing groove placed for fingerprint module, described
The outside of fingerprint module fixing groove is equipped with the first empty avoiding area, that face that the pressing plate is in contact with the pedestal is equipped with the second empty avoiding
Area, the pressing plate are equipped with trepanning, and the position of the trepanning is located at the top of the fingerprint module fixing groove.
Preferably, four sides of the fingerprint module fixing groove raise up, and the centre position of bottom, which is equipped with, to be accommodated
Hole, four angles are equipped with chamfering, and arbitrary a side of the fingerprint module fixing groove is equipped with opening, and the fingerprint module is fixed
Slot is structure as a whole with the pedestal；Four sides of fingerprint module fixing groove raise up, and the slot that centre is formed is used for placing referring to
Line module, the centre position of groove bottom are equipped with receiving hole and are used for accommodating the conducting foam layer that the fingerprint module back side carries, fingerprint mould
Four angles of group fixing groove are equipped with chamfering, taking-up and placement to fingerprint module for convenience, the opening of side be in order to
The FPC that fingerprint module carries is placed, entire fingerprint module is horizontally arranged during the test, ensure that the stabilization of test process
Property.
Preferably, second empty avoiding area covers the fingerprint module fixing groove and first empty avoiding area, and is located at institute
State the top of fingerprint module fixing groove；The setting in the second empty avoiding area is to carry out empty avoiding processing to entire fingerprint module, avoid
Pressing plate damages fingerprint module when being attracted with pedestal.
Preferably, the both sides of the pedestal are equipped with symmetrical sunk area；Convenient taking-up and placement to pressing plate.
Preferably, the side of the pedestal is equipped with line interface, and the line interface draws ground wire from the pedestal；From line
Road interface draws ground wire, and the ground wire is connected with ESD tester tables, convenient for effect of the simulation fingerprint module after complete machine ground connection
Fruit allows entire measurement jig to reach the state of mobile phone complete machine.
Preferably, the thickness of the pressing plate carries out 1 according to the thickness of mobile phone battery cover:1 design；Thickness of compressive plate and mobile phone battery cover
It is of uniform thickness, preferably simulates mobile phone complete machine, it is more accurate to the test of fingerprint module.
Preferably, the material of the pedestal is brass or other conductive metallic materials, and the material of the pressing plate is anodic oxygen
Change treated aluminium alloy；The material of analogue mobile phone rear shell makes the test environment of fingerprint module as mobile phone complete machine.
Preferably, the fingerprint module fixing groove can be designed according to the structure of fingerprint module；Fingerprint module fixing groove
It is that corresponding design, the effect after being assembled in order to analogue mobile phone can be carried out according to different fingerprint modules.
A kind of test method of measurement jig using the simulation complete machine inspection anti-ESD abilities of fingerprint module described above,
Include the following steps：
1), the pedestal of this measurement jig and the horizontal coupling plate of ESD tester tables are connected, ensure the two
Between impedance be less than 10 ohm；
2), fingerprint module to be tested is placed in the fingerprint module fixing groove, ensures fingerprint module to be tested
Impedance between the pedestal is less than 10 ohm；
3), on the base by the platen cover, the pressing plate is attracted with the pedestal by the magnet piece, and
Ensure that the impedance between the pressing plate and the pedestal is less than 10 ohm；
The beneficial effects of the invention are as follows：A kind of test of the anti-ESD of inspection fingerprint module of simulation complete machine effect of the present invention is controlled
Tool have it is small, it is easy to carry, it is easy to use the features such as, and by high-volume verify, the ESD measurement jigs can be effective
Complete machine is simulated, the anti-ESD abilities of fingerprint module are effectively examined.
Description of the drawings
Fig. 1 is that pedestal of the present invention places the vertical view after fingerprint module；
Fig. 2 is the structural schematic diagram after pressing plate of the present invention is attracted with pedestal；
Fig. 3 is the vertical view of pedestal of the present invention；
Fig. 4 is that pedestal of the present invention places the structural schematic diagram after fingerprint module；
Fig. 5 is the structural schematic diagram of pedestal of the present invention；
Fig. 6 is the structural schematic diagram of pressing plate of the present invention.
In figure, 1, pressing plate, 2, pedestal, 3, magnet piece, 4, limit hole, the 11, second empty avoiding area, 12, trepanning, 21, first keeps away
Dead zone, 22, ground wire, 23, fingerprint module fixing groove, 24, line interface, 25, sunk area, 231, receiving hole, 232, opening.
Specific embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
As shown in Figures 1 to 3, a kind of measurement jig of the simulation complete machine inspection anti-ESD abilities of fingerprint module, including a pressing plate 1,
Four angles of one pedestal 2, pressing plate 1 and pedestal 2 are both provided with magnet piece 3, and pressing plate 1 and pedestal 2 are attracted by magnet piece 3, bottom
The centre position of seat 2 is equipped with the fingerprint module fixing groove 23 placed for fingerprint module, and the outside of fingerprint module fixing groove 23 is equipped with
First empty avoiding area 21, that face that pressing plate 1 is in contact with pedestal 2 are equipped with the second empty avoiding area 11, and pressing plate 1 is equipped with trepanning 12, trepanning
12 position is located at the top of fingerprint module fixing groove 23；Magnet piece 3 is distributed in four angles of pressing plate 1 and pedestal 2, for being attracted
The limit hole 4 to align is equipped on firmly pressing plate 1 and pedestal 2, pedestal 2 and pressing plate 1, limit hole 4 is for positioning base 2 and pressure
Plate 1, then coordinate magnet piece 3 that can complete the fixation to pressing plate 1 and pedestal 2, the sunk area 25 of 2 both sides of pedestal is for right
What pressing plate 1 was picked and placeed, entire measurement jig simulates the effect after mobile phone final assembly, the line interface 24 of 2 side of pedestal
It is then for drawing ground wire 22, ground wire 22 is used for being connected in ESD tester tables, effect of the simulation fingerprint module after complete machine ground connection
Fruit；Fingerprint module fixing groove 23 and pedestal 2 are integral structures, are processed in one piece of four side protrusion on pedestal 2 in processing
Between the structure that falls in as fingerprint module fixing groove 23, be equipped with the first empty avoiding area 21 in the outside of fingerprint module fixing groove 23,
First empty avoiding area 21 can carry out different designs according to the contour structures of fingerprint module 22.
As shown in figure 4, in the centre position of fingerprint module fixing groove 23, there are receiving holes 231, because of the bottom of fingerprint module
There is one layer of conducting foam in face, so after being contacted with fingerprint module fixing groove 23, foam can enter in receiving hole 231, on the one hand
It plays a protective role to foamed cotton layer, on the other hand can keep the traffic clearance between fingerprint module and measurement jig；In fingerprint
A side of module fixing groove 23 is because fingerprint module is connected with FPC, for the FPC to fingerprint module there are opening 232
Vacating space makes entire fingerprint module that can be lain in a horizontal plane in during test in fingerprint module fixing groove 23, ensures
Stability in test process；Fingerprint module fixing groove 23 described in figure is square structure, is not to say that only this is a kind of
Structure, fingerprint module fixing groove 23 can be processed into other structures according to fingerprint module contour structures, and structure is given in figure
It is showed as one of which embodiment.
As shown in figure 5, it is equipped with the second empty avoiding area 11 in that face that pressing plate 1 is in contact with pedestal 2, the second empty avoiding area 11
Coverage area includes fingerprint module fixing groove 23 and the first empty avoiding area 21, and fingerprint mould can be fixed after pressing plate 1 and pedestal 2 are attracted
Group 22, will not cause the damage of fingerprint module, also ensure that the leakproofness of measurement jig entirety；Centre in the second empty avoiding area 11
Position is equipped with trepanning 12, be in order to which after pressing plate 1 and pedestal 2 are attracted, the position of trepanning 12 is located just at the top of fingerprint module,
The effect of complete machine unlocked by fingerprint can be simulated, anti-ESD tests then are carried out to fingerprint module, certainly, the shape of trepanning 12 also differs
Surely be it is round, can according to design need be designed to other shapes.
The working method of the present invention：The pedestal of this measurement jig is connect with the horizontal coupling plate of ESD tester tables
Get up, ensures that impedance between the two is less than 10 ohm；Fingerprint module to be tested is placed on the fingerprint module fixing groove
It is interior, ensure that the impedance between fingerprint module to be tested and the pedestal is less than 10 ohm；By the platen cover in the pedestal
On, the pressing plate is attracted with the pedestal by the magnet piece, and ensures the impedance between the pressing plate and the pedestal
Less than 10 ohm；Entire measurement jig all utmostly simulates the effect after mobile phone final assembly from material, structure, state,
So ensureing the accuracy of the anti-ESD of fingerprint module during the test.
Above description have shown and described the present invention several preferred embodiments, but it has been observed that it should be understood that the present invention simultaneously
It is not limited to form disclosed herein, is not to be taken as excluding other embodiments, and can be used for various other combinations, repair
Change and environment, and can in the scope of the invention is set forth herein, by the above teachings or related fields of technology or knowledge into
Row change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in the present invention
In the protection domain of appended claims.
Claims (9)
1. a kind of simulation complete machine examines the measurement jig of the anti-ESD abilities of fingerprint module, including a pressing plate (1), a pedestal (2),
It is characterized in that：Four angles of the pressing plate (1) and the pedestal (2) are both provided with magnet piece (3), the pressing plate (1) and described
Pedestal (2) is attracted by the magnet piece (3), and the centre position of the pedestal (2) is equipped with the fingerprint placed for fingerprint module
The outside of module fixing groove (23), the fingerprint module fixing groove (23) is equipped with the first empty avoiding area (21), the pressing plate (1) and institute
It states that face that pedestal (2) is in contact and is equipped with the second empty avoiding area (11), the pressing plate (1) is equipped with trepanning (12), the trepanning
(12) position is located at the top of the fingerprint module fixing groove (23).
2. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
Four sides of the fingerprint module fixing groove (23) raise up, and the centre position of bottom is equipped with receiving hole (231), four
Angle is equipped with chamfering, and arbitrary a side of the fingerprint module fixing groove (23) is equipped with opening (232), and the fingerprint module is solid
Determine slot (23) to be structure as a whole with the pedestal (2).
3. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
Second empty avoiding area (11) covers the fingerprint module fixing groove (23) and first empty avoiding area (21), and is located at the finger
The top of line module fixing groove (23).
4. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
The both sides of the pedestal (2) are equipped with symmetrical sunk area (25).
5. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
The side of the pedestal (2) is equipped with line interface (24), and the line interface (24) draws ground wire (22) from the pedestal (2).
6. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
The thickness of the pressing plate (1) carries out 1 according to the thickness of mobile phone battery cover:1 design.
7. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
The material of the pedestal (2) is brass or other conductive metallic materials, and the material of the pressing plate (1) is after anodized
Aluminium alloy.
8. simulation complete machine according to claim 1 examines the measurement jig of the anti-ESD abilities of fingerprint module, it is characterised in that：
The fingerprint module fixing groove (23) can be designed according to the structure of fingerprint module.
9. a kind of simulation complete machine using described in the claims 1 to 8 examines the measurement jig of the anti-ESD abilities of fingerprint module
Test method, it is characterised in that：Include the following steps：
1), the pedestal (2) of this measurement jig and the horizontal coupling plate of ESD tester tables are connected, ensure the two
Between impedance be less than 10 ohm；
2), fingerprint module to be tested is placed in the fingerprint module fixing groove (23), ensures fingerprint module to be tested
Impedance between the pedestal (2) is less than 10 ohm；
3), the pressing plate (1) is covered on the pedestal (2), the pressing plate (1) passes through the magnet piece with the pedestal (2)
(3) it is attracted, and ensures that the impedance between the pressing plate (1) and the pedestal (2) is less than 10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810313639.3A CN108732439B (en) | 2018-04-10 | 2018-04-10 | Test fixture and method for simulating anti-ESD capability of fingerprint module for whole machine inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810313639.3A CN108732439B (en) | 2018-04-10 | 2018-04-10 | Test fixture and method for simulating anti-ESD capability of fingerprint module for whole machine inspection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108732439A true CN108732439A (en) | 2018-11-02 |
| CN108732439B CN108732439B (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810313639.3A Active CN108732439B (en) | 2018-04-10 | 2018-04-10 | Test fixture and method for simulating anti-ESD capability of fingerprint module for whole machine inspection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109633299A (en) * | 2018-11-26 | 2019-04-16 | 大唐微电子技术有限公司 | A kind of test device and method of fingerprint mould group |
| CN110750407A (en) * | 2019-12-03 | 2020-02-04 | 江西合力泰科技有限公司 | Fingerprint module test fixture |
| WO2024207307A1 (en) * | 2023-04-06 | 2024-10-10 | 诚瑞光学(南宁)有限公司 | Esd test fixture |
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|---|---|
| CN108732439B (en) | 2023-07-04 |
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