CN217721266U

CN217721266U - Electrostatic test board for testing display module

Info

Publication number: CN217721266U
Application number: CN202221697310.XU
Authority: CN
Inventors: 李春平; 樊劼
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-11-01
Anticipated expiration: 2032-07-01

Abstract

The utility model belongs to the field of mobile phone testing, and discloses a static test board for testing a display module, which comprises a test board body, wherein a first conductive double-sided foam adhesive layer is symmetrically adhered on two sides of the upper surface of the test board body, a second conductive double-sided foam adhesive layer is adhered on one end of the upper surface of the test board body, the second conductive double-sided foam adhesive layer is distributed in a triangular shape, an element clearance hole is formed in the middle of the second conductive double-sided foam adhesive layer in a penetrating manner, a FPC (flexible printed circuit) threading hole is formed in one side of the element clearance hole in a penetrating manner, and a plurality of groups of excessive patches are arranged on the lower surface of the test board body at equal intervals; this is novel when carrying out the static test to display module assembly with solving current electrostatic test equipment, because randomness, the complexity characteristics in static route lead to the static test result of display module assembly monomer itself often to have with the static test result of dress in the complete machine casing and come in and go out, can't accurately assess the problem of display module assembly antistatic capacity under the complete machine state.

Description

Electrostatic test board for testing display module

Technical Field

The utility model relates to a cell-phone test field, more specifically say, relate to a display module assembly test is with static test panel.

Background

A mobile phone display screen (display module) usually performs an electrostatic test in a project development stage to evaluate the antistatic capability of the display module. The conventional method is to directly perform a discharge test on a display module, the larger the screen of the current mobile phone is, and the capacitive screen is adopted, so that static electricity can be generated when the mobile phone rubs with the inner walls of a bag and a pocket for a long time, meanwhile, the static electricity can also be generated when a human body acts, the static electricity has a larger influence on the mobile phone with the capacitive screen, and for the capacitive screen, if fingers have high-voltage static electricity, the screen is likely to be damaged, and the sensitivity is reduced or even fails.

Found by patent search, the publication number: CN104730367A, the device comprises an electrostatic test board and a plurality of electrostatic conduits perpendicular to the electrostatic test board, wherein first ends of the electrostatic conduits are arranged on a first surface of the electrostatic test board, a static probe is arranged at a second end of each electrostatic conduit, the electrostatic test board, the electrostatic conduits and the static probes are all made of materials with conductivity, and the number and the positions of the electrostatic conduits are set according to the number and the positions of the electrostatic test points on the equipment to be tested. The static test fixture utilizes the plurality of static probes on the static test fixture to be in contact with the plurality of static test points on the equipment to be tested so as to simultaneously carry out static test on the plurality of static test points of the equipment to be tested, thereby being convenient to use and saving test time and labor cost.

Found by patent search, the publication number: CN211580109U, comprising a test board body, wherein the test board body is provided with a first pad group, a second pad group and a test pad group; the first bonding pad group is provided with a plurality of first bonding pads corresponding to the number and the arrangement mode of pins of the BTB connector; the second bonding pad group is provided with a plurality of second bonding pads corresponding to the number and the arrangement mode of pins of the ZIF connector; the test bonding pad group comprises a plurality of test bonding pads, wherein one part of the test bonding pads are electrically connected with the first bonding pads and the second bonding pads at the same time, and the other part of the test bonding pads are only electrically connected with the first bonding pads. The first bonding pad is electrically connected with the testing bonding pad through a connecting wire, and the second bonding pad is electrically connected with the testing bonding pad through a connecting wire. At present, a mobile phone camera transmits an electrical signal through a connector, wherein a high-end mobile phone camera generally adopts a BTB connector, a middle-low mobile phone camera generally adopts a ZIF connector, and PIN of the ZIF connector is 30 PINs and is more than 99% of the PIN. If the universal mobile phone camera electrostatic test board is used for carrying out ESD (electrostatic discharge) electrostatic test on a mobile phone camera which adopts a BTB connector for carrying out electric signal transmission, the BTB connector is welded on a test board main body 1 through a first bonding pad group 4, the mobile phone camera to be tested is electrically connected with the BTB connector, one lead is welded on one test bonding pad which is electrically connected with the BTB connector, and the lead is connected with GND (ground potential) through the lead; when the mobile phone camera is used for ESD static test, the static in the loop can be led out in time through the lead. If the universal mobile phone camera electrostatic test board is used for carrying out ESD (electrostatic discharge) electrostatic test on a mobile phone camera which adopts a ZIF connector for electric signal transmission, the ZIF connector is welded on a test board main body 1 through a second bonding pad group 2, the mobile phone camera to be tested is electrically connected with the ZIF connector, one of test bonding pads which are electrically connected with the ZIF connector is welded with a lead, and the lead is connected with GND; when the mobile phone camera is used for ESD static test, the static in the loop can be led out in time through the lead.

When the existing electrostatic test equipment is used for carrying out electrostatic test on the display module, due to the characteristics of randomness and complexity of an electrostatic path, the electrostatic test result of a display module monomer is often in or out of the electrostatic test result in the whole machine shell, and the antistatic capability of the display module in the whole machine state cannot be accurately evaluated.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, an object of the utility model is to provide a static test board that display module assembly test was used, place display module assembly at testing board body upper surface, can keep away the vacancy to the component of display module assembly lower surface through the component clearance hole past, can paste display module assembly through a conductive double-sided bubble glue film and No. two conductive double-sided bubble glue films, make display module assembly fix at testing board body upper surface, testing board body lower surface is through the excessive paster of putting, discharge paster and copper leakage paster are laminated with cell-phone module upper surface mutually, the discharge paster can release static to cell-phone module, the discharge paster links to each other with the excessive paster electrical property, and the even distribution of excessive paster is at testing board body lower surface, thereby can be with the even release of static to cell-phone module surface, can simulate under the complete machine assembled state after copper leakage paster and the cell-phone module laminating, the overlap joint condition of display module assembly and the accurate aassessment display module antistatic performance under the complete machine state, make the static testing result to display module more be close to the complete machine state and carry out the static test module under the complete machine assembled state, the complexity of static test equipment carries out the static test result because the static test result of complete machine, the static test equipment, the static test result of the static test module and the static test can not only can not be observed at random and the random and can result of the problem of complete machine.

In order to solve the problem, the utility model adopts the following technical proposal.

The utility model provides an electrostatic test board that display module assembly test was used, includes the test plate body, test plate body upper surface both sides symmetry is pasted and is had a conductive double-sided bubble glue film, test plate body upper surface one end is pasted and is had No. two conductive double-sided bubble glue films, no. two conductive double-sided bubble glue films are triangular distribution, no. two conductive double-sided bubble glue film middle parts run through and have seted up component clearance hole, component clearance hole one side runs through and has seted up the FPC through wires hole, test plate body lower surface equidistance is equipped with a plurality of groups and overflows the paster of putting, test plate body lower surface one end is equipped with the mainboard interface, mainboard interface one side is equipped with the paster that discharges.

Furthermore, an LCD wiring port is arranged on one side of the discharging patch.

Furthermore, a copper leakage patch is arranged at one end of the LCD wiring port.

Furthermore, the test board body is movably arranged in the inner cavity of the base.

Furthermore, the inner wall of the base is provided with a limiting frame, and the limiting frame is used for limiting the test board body.

Furthermore, the bottom of the inner cavity of the base is symmetrically provided with supporting seats.

Furthermore, heat dissipation fans are symmetrically arranged in the middle of the supporting seat.

Furthermore, the surfaces of the cavity walls at the two ends of the base are symmetrically and rotatably provided with spring rotating shafts, and the surfaces of the spring rotating shafts are connected with pressing claws.

Furthermore, the tops of the two corresponding groups of spring rotating shafts are connected with connecting rods.

Furthermore, the two ends of the upper surface of the test board body are symmetrically embedded with pressing seats, the pressing seats are matched with the pressing claws, and one side of each pressing claw is provided with a handle.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) According to the technical scheme, the display module is placed on the upper surface of the test board body, the elements on the lower surface of the display module can be kept away through the element clearance holes, the display module can be pasted through the first conductive double-sided bubble adhesive layer and the second conductive double-sided bubble adhesive layer, the display module is fixed on the upper surface of the test board body, the lower surface of the test board body is attached to the upper surface of the mobile phone module through the overflow patch, the discharge patch and the copper leakage patch, the discharge patch can release static electricity to the mobile phone module, the discharge patch is electrically connected with the overflow patch, the overflow patch is uniformly distributed on the lower surface of the test board body, the static electricity can be uniformly released to the surface of the mobile phone module, the copper leakage patch can simulate the whole machine assembly state after being attached to the mobile phone module, the lapping condition of the display module and the whole machine can be simulated, the antistatic capability of the display module in the whole machine state can be accurately evaluated, and the static detection result of the display module is closer to the whole machine state to carry out static test on the display module.

(2) This technical scheme opens through two sets of pressure claws that connecting rod simultaneous control is corresponding, place into the base inner chamber with display module assembly, the base inner chamber is spacing to display module assembly through spacing frame, the connecting rod is loosened, press the claw to make under the torsion effect that the spring pivot provided and press the claw to reset, thereby the accessible is pressed the claw and is fixed the test plate body, can promote the stability to test plate body installation when detecting, wherein test plate body upper surface both ends symmetry is equipped with and presses the seat, press the claw to press the seat surface, can play the effect of protection to the test plate body, prevent to press the claw to crush the test plate body when fixing the test plate body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the base structure of the present invention;

FIG. 3 is a schematic view of the upper surface structure of the test board of the present invention;

fig. 4 is a schematic view of the lower surface structure of the test board of the present invention.

The reference numbers in the figures illustrate:

1. a base; 2. testing the board body; 201. a first conductive double-sided foam adhesive layer; 202. FPC threading hole; 203. an element clearance hole; 204. a second conductive double-sided foam adhesive layer; 3. overflowing the patch; 301. a motherboard interface; 302. LCD wiring port; 303. a discharge patch; 304. copper leakage paster; 4. a limiting frame; 401. a supporting seat; 402. a heat dissipation fan; 5. pressing a claw; 501. a spring shaft; 502. a connecting rod; 503. pressing a base; 504. a handle.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

referring to fig. 1-4, an electrostatic test board for testing a display module comprises a test board body 2, wherein a first conductive double-sided adhesive foam layer 201 is symmetrically adhered to two sides of the upper surface of the test board body 2, a second conductive double-sided adhesive foam layer 204 is adhered to one end of the upper surface of the test board body 2, the second conductive double-sided adhesive foam layer 204 is distributed in a triangular shape, an element clearance hole 203 is formed in the middle of the second conductive double-sided adhesive foam layer 204 in a penetrating manner, an FPC threading hole 202 is formed in one side of the element clearance hole 203, a plurality of groups of patches 3 are arranged on the lower surface of the test board body 2 at equal intervals, a main board interface 301 is arranged at one end of the lower surface of the test board body 2, a discharge patch 303 is arranged on one side of the main board interface 301, the display module is placed on the upper surface of the test board body 2, and the elements on the lower surface of the display module can be prevented from being emptied through the element clearance hole 203, the display module can be pasted through the first conductive double-sided foam adhesive layer 201 and the second conductive double-sided foam adhesive layer 204, the display module is fixed on the upper surface of the test plate body 2, the lower surface of the test plate body 2 is attached to the upper surface of the mobile phone module through the overflow patch 3, the discharge patch 303 and the copper leakage patch 304, the discharge patch 303 can release static electricity to the mobile phone module, the discharge patch 303 is electrically connected with the overflow patch 3, and the overflow patch 3 is uniformly distributed on the lower surface of the test plate body 2, so that the static electricity can be uniformly released to the surface of the mobile phone module, the copper leakage patch 304 is attached to the mobile phone module to simulate the whole assembly state, the lapping condition of the display module and the whole machine is accurately evaluated, and the static electricity resistance of the display module in the whole machine state is more approximate to the static electricity detection result of the display module to be subjected to static electricity test in the whole machine state.

Example 2:

as a further optimization of embodiment 1, referring to fig. 4, an LCD wiring port 302 is disposed on one side of the discharging patch 303, and the test board 2 can be connected to the display module through the LCD wiring port 302, so as to illuminate the display module.

Referring to fig. 4, one end of the LCD wiring port 302 is provided with a copper-leaking patch 304, and after the copper-leaking patch 304 is attached to the mobile phone module, the lapping condition of the display module and the whole mobile phone module in the whole assembly state can be simulated, so that the antistatic capability of the display module in the whole state can be accurately evaluated.

Referring to fig. 1 and 2, 2 movable mounting of test plate body is in the 1 inner chamber of base, 1 inner wall of base is equipped with spacing frame 4, spacing frame 4 is used for the spacing of

test plate body

2, 1 inner chamber bottom symmetry of base is equipped with supporting seat 401, supporting seat 401 middle part symmetry is equipped with heat dissipation fan 402, and the cell phone module passes through the connecting wire and links to each other with mainboard interface 301, places into the 1 inner chamber of base with the cell phone module, and 1 inner chamber bottom both ends symmetry of base is equipped with supporting seat 401, can support the cell phone module through supporting

seat

401, and 1 inner chamber bottom surface of base is equipped with heat dissipation fan 402, can accelerate the circulation of air of 1 inner chamber of base through heat dissipation fan 402 to promote the radiating effect to test plate body 2 and cell phone module.

Example 3:

as further optimization of embodiment 1, referring to fig. 1 and 2, the cavity wall surfaces at two ends of the base 1 are symmetrically and rotatably provided with spring rotating shafts 501, the surfaces of the spring rotating shafts 501 are connected with pressing claws 5, the tops of the two corresponding sets of spring rotating shafts 501 are connected with connecting rods 502, the two ends of the upper surface of the test plate 2 are symmetrically embedded with pressing seats 503, the pressing seats 503 are matched with the pressing claws 5, one side of one set of the pressing claws 5 is provided with a handle 504, the two corresponding sets of the pressing claws 5 are simultaneously controlled to be opened through the connecting rods 502, the display module is placed in the inner cavity of the base 1, the inner cavity of the base 1 limits the display module through a limiting frame 4, the connecting rods 502 are loosened, the pressing claws 5 can reset the pressing claws 5 under the torsion action provided by the spring rotating shafts 501, so that the test plate 2 can be fixed through the pressing claws 5, the stability of mounting the test plate 2 can be improved during detection, wherein the two ends of the upper surface of the test plate 2 are symmetrically provided with the pressing seats 503, the pressing claws 5 press the surface of the pressing seats 503, and can protect the test plate 2 and prevent the test plate 2 from being damaged when the pressing the test plate 2.

When in use: one end of an LCD connecting wire penetrates through the inner cavity of the LCD wiring port 302, one end of the LCD connecting wire is connected with the LCD wiring port 302, the other end of the LCD connecting wire is connected with a display module to be detected, the mobile phone module is connected with the mainboard interface 301 through the connecting wire, the mobile phone module is placed in the inner cavity of the base 1, two ends of the bottom of the inner cavity of the base 1 are symmetrically provided with supporting seats 401, the mobile phone module can be supported through the supporting seats 401, then two groups of corresponding pressing claws 5 are simultaneously controlled to be opened through connecting rods 502, the display module is placed in the inner cavity of the base 1, the inner cavity of the base 1 limits the display module through limiting frames 4, the connecting rods 502 are loosened, the pressing claws 5 can reset the pressing claws 5 under the torsion action provided by a spring rotating shaft 501, so that a test plate body 2 can be fixed through the pressing claws 5, the stability of mounting the test plate body 2 can be improved during detection, wherein the pressing seats 503 are symmetrically arranged at two ends of the upper surface of the test plate body 2, the pressing claw 5 is pressed on the surface of the pressing seat 503, which can protect the testing plate body 2, and prevent the pressing claw 5 from crushing the testing plate body 2 when fixing the testing plate body 2, two sides of the upper surface of the testing plate body 2 are symmetrically adhered with a first conductive double-sided adhesive foam layer 201, one end of the upper surface of the testing plate body 2 is adhered with a second conductive double-sided adhesive foam layer 204, the second conductive double-sided adhesive foam layer 204 is distributed in a triangle shape, the display module is placed on the upper surface of the testing plate body 2, the element on the lower surface of the display module can be avoided through the element avoiding hole 203, the display module can be adhered through the first conductive double-sided adhesive foam layer 201 and the second conductive double-sided adhesive foam layer 204, so that the display module is fixed on the upper surface of the testing plate body 2, the lower surface of the testing plate body 2 is adhered to the upper surface of the mobile phone module through the overflow patch 3, the discharge patch 303 and the copper leakage patch 304, the discharging patch 303 can release static electricity to the mobile phone module, the discharging patch 303 is electrically connected with the overflowing-discharging patch 3, and the overflowing-discharging patch 3 is uniformly distributed on the lower surface of the testing plate body 2, so that the static electricity can be uniformly released to the surface of the mobile phone module, the copper leaking patch 304 can simulate the whole machine assembly state after being attached to the mobile phone module, the lapping condition of the display module and the whole machine can be displayed, the antistatic capability of the display module in the whole machine state can be accurately evaluated, the static electricity detection result of the display module is closer to that of the display module in the whole machine state, the static electricity test can be performed on the display module, the bottom surface of the inner cavity of the base 1 is provided with the heat dissipation fan 402, the air circulation of the inner cavity of the base 1 can be accelerated through the heat dissipation fan 402, and the heat dissipation effect on the testing plate body 2 and the mobile phone module can be improved.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides an electrostatic test board that display module assembly test was used, includes test plate body (2), its characterized in that: the testing plate body (2) upper surface bilateral symmetry is pasted and is had electrically conductive double-sided bubble glue film (201) No. one, testing plate body (2) upper surface one end is pasted and is had electrically conductive double-sided bubble glue film (204) No. two, electrically conductive double-sided bubble glue film (204) is triangular distribution, no. two electrically conductive double-sided bubble glue film (204) middle parts are run through and have been seted up component clearance hole (203), component clearance hole (203) one side is run through and has been seted up FPC through wires hole (202), testing plate body (2) lower surface equidistance is equipped with a plurality of groups and overflows paster (3), testing plate body (2) lower surface one end is equipped with mainboard interface (301), mainboard interface (301) one side is equipped with the paster that discharges (303).

2. The electrostatic discharge test board for testing a display module as claimed in claim 1, wherein: and an LCD wiring port (302) is arranged on one side of the discharging patch (303).

3. The electrostatic test board for testing a display module according to claim 2, wherein: and one end of the LCD wiring port (302) is provided with a copper leakage patch (304).

4. The electrostatic test board for testing a display module according to claim 1, wherein: the test board body (2) is movably arranged in the inner cavity of the base (1).

5. The electrostatic test board for testing a display module according to claim 4, wherein: the inner wall of the base (1) is provided with a limiting frame (4), and the limiting frame (4) is used for limiting the test board body (2).

6. The electrostatic test board for testing a display module according to claim 5, wherein: the bottom of the inner cavity of the base (1) is symmetrically provided with supporting seats (401).

7. The electrostatic test board for testing a display module according to claim 6, wherein: and heat dissipation fans (402) are symmetrically arranged in the middle of the supporting seat (401).

8. The electrostatic test board for testing a display module according to claim 6, wherein: the base (1) both ends chamber wall surface symmetry rotates and is equipped with spring pivot (501), spring pivot (501) surface is connected with pressure claw (5).

9. The electrostatic discharge test board for testing a display module as claimed in claim 8, wherein: the tops of the two corresponding groups of spring rotating shafts (501) are connected with connecting rods (502).

10. The electrostatic test board for testing a display module according to claim 8, wherein: the test board is characterized in that pressing seats (503) are symmetrically embedded at two ends of the upper surface of the test board body (2), the pressing seats (503) are matched with pressing claws (5), and one side of each pressing claw (5) is provided with a handle (504).