A fingerprint module test fixture
By designing a fingerprint module test fixture containing positioning slots and probe test slots, the problems of impedance and functional tests in the prior art are solved, and the sharing of impedance and functional tests is realized, reducing costs and improving the factory benefit.
Patent Information
- Application Number
- CN201911219909.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-12-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2039-12-03
AI Technical Summary
In the prior art, the impedance and functional testing of fingerprint modules require the use of different test fixtures separately, resulting in high cost of manual and fixtures, complex management and low efficiency.
Design a fingerprint module test fixture. By setting a positioning groove and a probe test groove on the fixture substrate, combining magnets and test probes, the impedance and functional tests are achieved. The process is changed to: paste QR code-impedance Functional testing.
It realizes the sharing of impedance and functional testing, reduces labor and fixture costs, simplifies production line management, and improves factory efficiency.
Smart Images
Figure CN110750407B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fingerprint product testing fixtures, and in particular to a testing fixture for fingerprint modules with impedance and function testing requirements. Background Art
[0002] Fingerprint recognition refers to identification by comparing different detailed features. Since each person's fingerprint is different, the fingerprints between the ten fingers of the same person are also obviously different, so fingerprints can be used for identity verification. Fingerprint recognition products are mainly used in mobile devices such as mobile phones, usually called fingerprint recognition modules, which can provide fingerprint scanning, unlocking and secure payment functions for mobile phones, banks and other devices, and can also provide Home Key and cold screen wake-up functions. Fingerprint recognition modules can be divided into the following types according to the structural type: Coating+Ring solution, Cover+Ring solution, Under Glass, optical, ultrasonic, and iris fingerprint. Among them, the solution with Ring has been recognized by the market for its simple structure, low cost and diverse surface effects. It is mostly used on the front of mobile phones and can bring excellent visual effects.
[0003] For modules with Ring decorative parts, the Ring component, in addition to its decorative function, is also a transmitter and receiver for the chip-driven scanning TX signal. The Ring component needs to be connected to the Ring signal pad on the FPC through conductive glue or welding. It needs to cooperate with the Sensor sensing area when the finger presses the module to complete the fingerprint collection work. In addition, it can also realize the functions of accessories, such as cold screen wake-up, etc.
[0004] As mentioned above, Ring is an indispensable device for fingerprints. The most important control of Ring performance is the impedance requirement. All fingerprint products must be tested for product impedance before functional testing. The original process is: test impedance - paste QR code - test function. Therefore, the existing technology still needs to be improved and developed. Summary of the invention
[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a fingerprint module test fixture to achieve the purpose of using a test fixture for impedance testing and functional testing, thereby reducing labor costs and fixture costs, facilitating the management of production line fixtures, and improving factory efficiency.
[0006] In order to achieve the above object, the technical solution adopted by the present invention is:
[0007] A fingerprint module test jig, comprising a jig substrate (1), a jig upper cover (2), a press-fit buckle (3), and a functional test pressure cover (4), wherein the jig upper cover is hinged on the jig substrate, the jig upper cover and the jig substrate are connected in an openable and closable manner via the press-fit buckle, the fingerprint module is connected with the functional test pressure cover, the fingerprint module comprises an IC area, a softening area, and a reinforcement area, the IC area, the softening area, and the reinforcement area are connected in sequence, the outer contour of the IC area is square, the edges and corners are rounded, the reinforcement area is rectangular, and the edges and corners are rounded, and the jig substrate is characterized in that: a positioning groove (5) is provided on the jig substrate (1), the shape of the positioning groove is adapted to the fingerprint module, the outer contour size of the positioning groove and the outer contour size of the fingerprint module have a gap of 0.1±0.02mm, the IC area corresponding to the positioning groove has a square groove, two circular magnets (6) are provided in the groove, a probe test groove (7) is provided at the position of the groove, the probe test groove is connected to the groove, and a test probe is connected to the probe test groove.
[0008] Furthermore, the groove has a depth of 1.5±0.02 mm, the circular magnet has a diameter of 5±0.05 mm, a thickness of about 0.5±0.02 mm, and the probe test slot has a length of 20±0.05 mm, a width of 0.3±0.02 mm, and a depth of 2.5±0.02 mm.
[0009] Furthermore, a functional test CON connector (8) is connected to one side of the fixture substrate, and a positioning surface (9) is provided on the functional test cover, and the positioning surface is square.
[0010] Furthermore, the two circular magnets (6) are located at opposite corners of the square and are symmetrical about the center of the square; and the two probe test slots (7) are located on two sides of the square and are symmetrical about the center of the square.
[0011] Furthermore, the test probe is connected to an impedance test table, and the test procedure is: paste the QR code → impedance function test.
[0012] This fingerprint module test fixture achieves the purpose of using one test fixture for impedance testing and functional testing, reduces labor costs and fixture costs, is beneficial to the management of production line fixtures, and improves factory efficiency. The modified process is: QR code pasting - impedance functional testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG1 is a schematic diagram of the structure of a fingerprint module of the present invention;
[0014] FIG2 is a schematic diagram of the structure of a fingerprint module test fixture of the present invention;
[0015] Figure 3 This is a schematic diagram of the impedance test structure of the present invention.
[0016] In the figure: a fixture substrate 1, a fixture upper cover 2, a press buckle 3, a functional test cover 4, a positioning groove 5, a circular magnet 6, a probe test groove 7, a functional test CON connector 8, and a positioning surface 9. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0019] like Figure 1 As shown, the fingerprint module includes an IC area, a softening area, and a reinforcement area. The IC area, the softening area, and the reinforcement area are connected in sequence. The outer contour of the IC area is generally square, with rounded edges and corners, and the reinforcement area is generally rectangular, with rounded edges and corners.
[0020] like Figure 2-3 As shown, a fingerprint module test jig includes a jig substrate 1, a jig cover 2, a press buckle 3, and a functional test cover 4. The jig cover 2 is hinged on the jig substrate 1, and the jig cover 2 and the jig substrate 1 can be opened and closed by the press buckle 3. The fingerprint module is connected with a functional test cover 4, which is characterized in that: a positioning groove 5 is provided on the jig substrate 1, and the shape of the positioning groove 5 is adapted to the fingerprint module. There is a gap of about 0.1mm between the outer contour size of the positioning groove 5 and the outer contour size of the fingerprint module, that is, the size of the positioning groove 5 is 0.1mm larger than the size of the fingerprint module product. The corresponding IC area of the positioning groove 5 has a substantially square groove, and two circular magnets 6 are provided in the groove. A probe test groove 7 is provided at the position of the groove, and the probe test groove 7 is connected to the groove. A test probe is connected in the probe test groove 7. A functional test CON connector 8 is connected to one side of the jig substrate 1, and a positioning surface 9 is provided on the functional test cover 4, and the positioning surface 9 is substantially square.
[0021] The groove is about 1.5 mm deep, the circular magnet 6 is about 5 mm in diameter, about 0.5 mm in thickness / height, and the probe test slot 7 is about 20 mm in length, about 0.3 mm in width, and 2.5 mm in depth. The two circular magnets 6 are located at the diagonal corners of the square and are symmetrical about the center of the square; the two probe test slots 7 are located on both sides of the square and are symmetrical about the center of the square.
[0022] A positioning groove 0.1mm larger than the product appearance is designed on the fixture substrate, two magnets with a diameter of 5mm are designed in the positioning groove, and two test probes with a diameter of 20*0.3mm are designed at the positioning groove and impedance test position. The test probes are connected to the impedance test table to realize the product impedance test process. A positioning groove 0.1mm larger than the product appearance is designed on the fixture substrate, a CON connector connected to the product is designed on the fixture substrate, and a corresponding pressure cover is designed on the fixture to realize the product function test process.
[0023] The present invention provides an impedance function test fixture for a fingerprint module, which achieves the purpose of using a test fixture for impedance testing and functional testing, reduces labor costs and fixture costs, is beneficial to the management of production line fixtures, and improves factory efficiency. The modified process is: QR code pasting - impedance function test.
[0024] After optimization, based on the similar structures of the impedance test fixture and the functional test fixture, the magnet and test probe of the impedance test fixture are simultaneously designed on the functional test fixture, and the impedance test table is simultaneously connected, and a functional test cover is designed on the fixture to achieve impedance and functional testing of the product, thereby achieving integrated impedance and functional testing, optimizing the testing process, reducing labor costs, and maximizing production efficiency.
[0025] The fingerprint module test fixture realizes the purpose of using the same test fixture for impedance testing and functional testing, reduces labor costs and fixture costs, is beneficial to the management of production line fixtures, and improves factory efficiency.
[0026] The above-mentioned implementation modes are for explanation of the present invention rather than limitation of the present invention. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A fingerprint module test jig, comprising a jig substrate (1), a jig upper cover (2), a press buckle (3), and a functional test pressure cover (4), wherein the jig upper cover is hinged on the jig substrate, the jig upper cover and the jig substrate are connected in an openable and closable manner via the press buckle, a fingerprint module is connected with a functional test pressure cover, the fingerprint module comprises an IC area, a softening area, and a reinforcement area, the IC area, the softening area, and the reinforcement area are connected in sequence, the outer contour of the IC area is square, and the edges and corners are rounded, the reinforcement area is rectangular, and the edges and corners are rounded, and the fingerprint module is characterized in that: A positioning groove (5) is provided on the fixture substrate (1), the shape of the positioning groove is adapted to the fingerprint module, and there is a gap of 0.1±0.02mm between the outer contour size of the positioning groove and the outer contour size of the fingerprint module. The corresponding IC area of the positioning groove has a square groove, and two circular magnets (6) are provided in the groove. A probe test groove (7) is provided at the position of the groove, and the probe test groove is connected to the groove. A test probe is connected to the probe test groove. The groove has a groove depth of 1.5±0.02mm, a circular magnet has a diameter of 5±0.05mm, and a thickness of 0.5±0.02mm. m, the probe test slot has a length of 20±0.05mm, a width of 0.3±0.02mm, and a depth of 2.5±0.02mm, one side of the fixture substrate is connected to a functional test CON connector (8), a positioning surface (9) is provided on the functional test cover, the positioning surface is square, the two circular magnets (6) are located at the diagonals of the square and are symmetrical about the center of the square; the two probe test slots (7) are located on both sides of the square and are symmetrical about the center of the square, the test probe is connected to an impedance test table, and the test procedure is: paste the QR code → impedance function test.