PVD (Physical Vapor Deposition) test tool

Abstract

The utility model discloses a PVD (Physical Vapor Deposition) test tool, which comprises a jig base, and a detection area is laid above the jig base and is used for placing and positioning a display module during detection; the pneumatic telescopic unit is connected to one side of the top of the jig base and is used for performing pneumatic extension and retraction towards the direction of the jig base; and the jig pressure head is arranged above the detection area and is used for being connected with the output end of the pneumatic telescopic unit. According to the PVD test tool provided by the utility model, the detection area is arranged on the tool base, and the PCB slides along the telescopic direction of the pneumatic unit, so that when the PVD test tool is used, the PCB on the pneumatic unit can be contacted with the A1A2 position area on the display module through the telescopic of the starting unit, and contact detection is formed; therefore, the position precision and efficiency are improved, and meanwhile, the problem that the PVD film layer on the cover plate is easily scratched to influence the yield due to traditional manual detection is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVD, in particular to a PVD testing tool. Background Art

[0002] With the advancement of technology, more and more high-end smart watches have the function of testing electrocardiogram (ECG) to regularly track the health status of users. The conventional display module design with ECG function has the following ECG path: PVD film layer on the front of the cover -> PVD electrode on the back of the cover -> conductive foam -> FPC ECG electrode (copper-plated area) -> display module connector end.

[0003] However, when the inventors implemented this device, they found the following defects: when such products are shipped, it is necessary to test the resistance from the position A1 / A2 where the PVD film layer above the display module is located to the connector D1 end separately. Usually, the tester manually uses the positive and negative test leads of a multimeter to touch the two positions A1 / A2 on the PVD cover for testing. The positioning accuracy and efficiency are low, and it is easy to scratch the PVD film layer on the cover, affecting the yield. Utility Model Content

[0004] Based on this, it is necessary to provide a PVD test fixture to address the above technical problems. A PCB circuit board that can slide along the telescopic direction of the pneumatic telescopic unit is set above the fixture base, driving it to contact the display module in the detection area, thereby realizing interference detection, improving positioning accuracy and efficiency while reducing the defective rate.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A PVD test tool, comprising:

[0007] A fixture base, with a detection area laid above the fixture base for placement and positioning of the display module during detection;

[0008] A pneumatic telescopic unit connected to one side of the top of the jig base for pneumatically telescoping in the direction of the jig base;

[0009] The jig pressure head is arranged above the detection area and is used to connect with the output end of the pneumatic telescopic unit, so as to drive the jig pressure head to perform contact test with the display module built into the detection area when the pneumatic telescopic unit is pneumatically telescoped.

[0010] Furthermore, the detection area includes an insulating area laid above the fixture base and a groove formed in the insulating area.

[0011] Furthermore, steps are provided at the edges of the two side walls of the trough body to form a suspended support when the display module is placed.

[0012] Furthermore, a relief groove is formed at the bottom of the groove body to avoid the component area at the back of the display module after the display module is placed.

[0013] Furthermore, the side wall of the groove body is located above the step position and forms a limited position area to control the placement accuracy of the display module when it is placed in the detection.

[0014] Furthermore, the insulating area is wrapped with foam for protecting the edge of the display module from collision.

[0015] Furthermore, a PCB circuit board is provided below the jig pressure head, and a metal PAD is formed by electroplating on the PCB circuit board for attaching the conductive foam;

[0016] There are two position areas A1\A2 on both sides above the display module for contacting and connecting with the corresponding conductive foam to detect the PVD film resistance of the display module.

[0017] Further, the pneumatic telescopic unit includes a pneumatic telescopic part connected to the top of the jig pressure head and a support body fixed on the jig base and connected to the pneumatic telescopic part, a gas pressure regulating switch is provided on one side of the support body, and a pressure gauge connected to the gas pressure regulating switch is also provided on one side of the support body;

[0018] Among them, a solenoid valve control switch is also provided on the outside of the fixture base to control the on and off of the gas in the pneumatic telescopic unit so as to realize the fixture pressure head on the output end of the pneumatic telescopic part.

[0019] Furthermore, a connector interface is provided on one side of the fixture base adjacent to the detection area, which is used to connect the module FPC and the test base plate to perform PVD resistance testing.

[0020] Furthermore, the jig head is provided with a protection unit for protecting the jig head, and the protection unit comprises a main protection frame slidably sleeved on the outside of the jig head and a positioning bolt rotatably provided on the main protection frame for threaded connection with the jig head.

[0021] The protection unit also includes a rotating frame rotatably connected to both sides of the jig pressure head, and the free end of the rotating frame passes through the strip groove on the main protection frame and is fixedly assembled with the auxiliary protection frame;

[0022] Among them, a side wall of the strip groove arranged on the main protective frame is formed with a tooth groove, and the rotating frame is coaxially fixed with a gear meshing with the tooth groove at the position of the strip groove. When the main protective frame slides, the auxiliary protective frame is driven to close or open, so as to meet the protection and detection needs of the jig pressure head.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The PVD test fixture provided by the utility model sets a detection area on the fixture base, so that the PCB circuit board slides along the extension direction of the pneumatic unit, so that when the device is used, the pneumatic unit can be extended to make the PCB circuit board contact the two position areas A1\A2 on the display module to form a contact detection, thereby improving the position accuracy and efficiency, and at the same time reducing the problem that the PVD film layer on the cover plate is easily scratched and affects the yield rate due to traditional manual detection;

[0025] The slots, steps, avoidance grooves and limit areas in the detection area can form a placement for the display module to be detected, so that the placement accuracy during detection is better, and with the wrapping of foam, while avoiding the component area on the back of the display module in the detection area, further collision protection is formed;

[0026] A protection unit is provided on the jig pressure head, which can seal and protect the PCB circuit board when it is not in use. At the same time, when the PVD test is used, the secondary protection frame can be flipped over to reveal the area under the PCB circuit board to meet the fit detection with the display module during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the PVD test fixture provided by the utility model under the test state;

[0028] Figure 2 This is a schematic diagram of the front view structure of the PVD test tooling provided by the utility model;

[0029] Figure 3 A schematic diagram of the side structure of the PVD test tooling provided by the utility model;

[0030] Figure 4 A schematic diagram of the detection area state structure provided by the utility model;

[0031] Figure 5 A schematic diagram of the closed state structure of the protection unit provided by the utility model;

[0032] Figure 6 A schematic diagram of the structure of the protection unit provided by the utility model in the expanded state;

[0033] Figure 7 A schematic diagram of the top view of the protection unit provided by the utility model;

[0034] Figure 8 This is a schematic diagram of a partially cutaway structure of a protection unit provided by the utility model.

[0035] The markings in the figure are as follows:

[0036] Fixture base 1;

[0037] Detection area 2; insulation area 21; slot 22; step position 23; avoidance groove 24; limit area 25; foam 26;

[0038] Display module 3;

[0039] A fixture press head 4; a PCB circuit board 41; and a conductive foam 42;

[0040] Pneumatic telescopic unit 5, pneumatic telescopic part 51, support body 52, air pressure regulating switch 53, air pressure gauge 54; solenoid valve control switch 55;

[0041] Connector interface 6;

[0042] Protection unit 7; main protection frame 71; auxiliary protection frame 72; rotating frame 73; strip groove 74; tooth groove 75; gear 76; positioning bolt 77. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0044] As in the background art, the tester manually uses the positive and negative test leads of a multimeter to contact the two positions A1 / A2 on the PVD cover plate for testing, which has low position accuracy and efficiency, and can easily scratch the PVD film layer on the cover plate, affecting the yield.

[0045] In order to solve this technical problem, the utility model provides a PVD testing tool, which is applied to PVD testing.

[0046] Specifically, please refer to Figure 1-Figure 4 ,

[0047] A fixture base 1, with a detection area 2 provided above the fixture base 1 for positioning the display module 3 during detection;

[0048] A pneumatic telescopic unit 5, which is connected to one side of the top of the jig base 1 and is used for pneumatic telescopic movement toward the jig base 1;

[0049] The jig pressure head 4 is arranged above the detection area 2 and is used to be connected to the output end of the pneumatic telescopic unit 5, so that when the pneumatic telescopic unit 5 is pneumatically telescoped, the jig pressure head 4 is driven to perform a contact test with the display module 3 placed in the detection area 2.

[0050] The PVD testing tool provided by the utility model sets a detection area on the fixture base, so that the PCB circuit board can slide along the extension and retraction direction of the pneumatic unit, so that when the device is used, the PCB circuit board on it can be contacted with the two position areas A1\A2 on the display module by starting the extension and retraction of the unit to form a contact detection, thereby improving the position accuracy and efficiency, while reducing the problem of traditional manual detection easily causing scratches on the PVD film layer on the cover plate to affect the yield. After the detection is completed, the display module 3 is manually replaced in the detection area 2, and batch detection of multiple display modules 3 can be realized.

[0051] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0052] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0053] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0054] Example 1

[0055] Please refer to Figure 1-Figure 4 A PVD test tool, a jig base 1, a detection area 2 is laid above the jig base 1 for placement and positioning of a display module 3 during detection; a pneumatic telescopic unit 5, which is connected to one side of the top of the jig base 1 and is used for pneumatic telescopic expansion in the direction of the jig base 1; a jig pressure head 4, which is arranged above the detection area 2 and is used for connecting with the output end of the pneumatic telescopic unit 5, so as to drive the jig pressure head 4 to perform contact test with the display module 3 placed in the detection area 2 when the pneumatic telescopic unit 5 is pneumatically expanded and contracted.

[0056] Please refer to Figure 4The detection area 2 includes an insulating area 21 laid on the top of the fixture base 1 and a groove body 22 formed in the insulating area 21. Step positions 23 are also set at the edges of the two side walls of the groove body 22 to form a suspended support when the display module 3 is placed. An avoidance groove 24 is also formed at the bottom of the groove body 22 to avoid the component area on the back of the display module 3 after it is placed. The side wall of the groove body 22 is located above the step position 23 to form a limited position area 25 to control the placement accuracy of the display module 3 when it is placed for detection. The insulating area 21 is wrapped with foam 26 for protecting the edge of the display module 3 from bumps.

[0057] The slot body 22 provided in this embodiment can be embedded to place the display module 3 to be tested, and the placed display module 3 can be supported by the step position 23, so that the bottom of the display module 3 is lifted off the bottom of the slot body 22 by the setting of the avoidance groove 24, so that the component area on the back of the display module 3 can be protected. At the same time, the edge of the placed display module 3 can be completely fitted with the slot body 22 by the setting of the limiting area 25 located on the upper layer, so that the display module 3 can be quickly placed. Figure 4 The two ends of the slot body 22 extend outward for a certain distance, so that after the display module 3 is inspected, the display module 3 can be smoothly taken out from the relative space formed by the back side of the display module 3 and the avoidance slot 24, which is convenient for the inspector to replace the display module 3.

[0058] Example 2

[0059] The jig press head 4 provided in Example 1 is further optimized, specifically, as follows Figure 2 As shown, a PCB circuit board 41 is also provided below the jig pressing head 4, and a metal PAD is formed by electroplating on the PCB circuit board 41 for attaching the conductive foam 42;

[0060] Among them, there are two position areas A1\A2 on both sides above the display module 3 for contacting and connecting with the corresponding conductive foam 42 to detect the PVD film layer resistance of the display module 3. The two A1\A2 positions set above the display module 3 correspond to the positions of the conductive foam 42 attached to the PCB circuit board 41.

[0061] Through the above-mentioned structural design, when the jig pressure head 4 is driven by the pneumatic unit 5 to slide toward the display module 3, the conductive foam 42 on the PCB circuit board 41 can be correspondingly attached to A1\A2 above the display module 3, so that the PVD film layer resistance of the display module 3 can be detected. At the same time, since the jig pressure head 4 moves up and down in a vertical direction, the test efficiency of the tooling is improved compared to the traditional method of manual test pen attachment.

[0062] Example 3

[0063] The pneumatic telescopic unit 5 provided in Example 1 is further optimized, such as Figure 2 As shown, the pneumatic telescopic unit 5 includes a pneumatic telescopic part 51 connected to the top of the jig pressure head 4 and a support body 52 fixed on the jig base 1 and connected to the pneumatic telescopic part 51, a gas pressure regulating switch 53 is provided on one side of the support body 52, and a pressure gauge 54 connected to the gas pressure regulating switch 53 is also provided on one side of the support body 52, and a solenoid valve control switch 55 is also provided on the outside of the jig base 1 for controlling the gas on and off in the pneumatic telescopic unit 5 so as to realize the lifting and lowering of the jig pressure head 4 on the output end of the pneumatic telescopic part 51. The above-mentioned pneumatic telescopic part 51, the gas pressure regulating switch 53, the pressure gauge 54 and the solenoid valve control switch 55 are all connected to each other through wires to form a pneumatic control system together;

[0064] The gas is turned on and off by turning on the solenoid valve control switch 55 to control the extension and retraction of the pneumatic telescopic part 51. When the pneumatic telescopic part 51 is extended, one end thereof will drive the jig pressure head 4 to slide toward the display module 3. When the conductive foam 42 on the PCB circuit board 41 on the jig pressure head 4 contacts the A1\A2 position on the display module 3, a detection operation is formed. After the detection is completed, the solenoid valve control switch 55 is used to control the pneumatic telescopic part 51 to retract and reset, so that the PCB circuit board 41 follows the jig pressure head 4 to return to its original position. The air pressure regulating switch 53 and the air pressure gauge 54 equipped on the jig are used to control the size of the airflow and adjust the lifting and lowering rate of the jig pressure head 4 of the test device (the pneumatic control system between the above-mentioned solenoid valve control switch 55 and the pneumatic telescopic unit 5 is a common knowledge technology well known to people in this field and does not need to be further elaborated in this embodiment).

[0065] Example 4

[0066] On the basis of Example 3, a connector interface 6 is further provided on one side of the fixture base 1 adjacent to the detection area 2 for connecting the module FPC and the test base plate to perform PVD resistance testing.

[0067] Example 5

[0068] The jig press head 4 provided in Example 1 is further optimized, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown,

[0069] The jig pressing head 4 is provided with a protection unit 7 for protecting it. The protection unit 7 comprises a main protection frame 71 slidably sleeved on the outside of the jig pressing head 4 and a positioning bolt 77 rotatably provided on the main protection frame 71 for threaded connection with the jig pressing head 4. Figure 6As shown, the inner side of the main protection frame 71 is attached to the outer side of the jig press head 4, so that it can slide up and down on the surface of the jig press head 4;

[0070] The protection unit 7 also includes a rotating frame 73 rotatably connected to both sides of the jig pressure head 4, and the free end of the rotating frame 73 passes through the strip groove 74 on the main protection frame 71 and is fixedly assembled with the auxiliary protection frame 72. There are two auxiliary protection frames 72, which are respectively arranged on both sides of the main protection frame 71;

[0071] Among them, a side wall of the strip groove 74 provided on the main protection frame 71 is formed with a tooth groove 75, and the rotating frame 73 is coaxially fixed with a gear 76 meshing with the tooth groove 75 at the position of the strip groove 74, and drives the auxiliary protection frame 72 to close or open when the main protection frame 71 slides, so as to meet the protection and detection of the jig pressure head 4. Figure 5 and Figure 6 As shown, both sides of the same secondary protection frame 72 are connected with a rotating frame 73, and the rotating frame 73 is movably connected to the outer side of the jig pressure head 4, so that the two secondary protection frames 72 can be relatively flipped on the surface of the main protection frame 71;

[0072] like Figure 5 As shown, the protection unit 7 is in the initial state at this time, that is, the two secondary protection frames 72 are relatively closed, and the PCB circuit board 41 and the conductive foam 42 thereon are protected at the bottom of the main protection frame 71. At the same time, the secondary protection frame 72 can also block and protect the PCB circuit board 41 on all sides, so as to protect the PCB circuit board 41 and the conductive foam 42 when the tooling is not actually in use, and avoid the situation that the conductive foam 42 falls or the PCB circuit board 41 is easily bumped due to external contact;

[0073] like Figure 6 As shown, at this time, the protection unit 7 is in the unfolded state. Specifically, in order to remove the positioning bolt 77, the main protection frame 71 is slid upward along the height direction of the jig pressure head 4, so that the tooth groove 75 in the strip groove 74 forms a meshing transmission with the corresponding gear 76. Through the rotation of the gear 76, the rotating frame 73 and the auxiliary protection frame 72 connected thereto are driven to flip and unfold relatively. When the main protection frame 71 slides upward as shown in FIG. Figure 6 After reaching the height shown, the secondary protection frame 72 is flipped over, and the PCB circuit board 41 and the conductive foam 42 thereon are completely exposed, and can smoothly perform contact detection with the display module 3;

[0074] At the same time, the bottom of the main protective frame 71 should be higher than the conductive foam 42 and lower than the horizontal height of the PCB circuit board 41. By setting this height, the conductive foam 42 is exposed so that it can fully contact A1\A2 on the display module 3 to form a detection. At the same time, the main protective frame 71 can still protect the PCB circuit board 41 from the outside.

[0075] The use process of the PVD test tool provided by the utility model is as follows:

[0076] Before testing the display assembly 3: turn the positioning bolt 77, slide the main protection frame 71 upwards to make the tooth groove 75 and the gear 76 form a meshing transmission, so that the secondary protection frame 72 is turned over, and the PCB circuit board 41 is exposed, and tighten the positioning bolt 77 again to limit and fix the main protection frame 71, and then place the display assembly 3 to be tested into the slot 22 and put it on the step position 23;

[0077] When testing the display module 3: start the solenoid valve control switch 55 so that its pneumatic telescopic part 51 drives the jig pressure head 4 to extend toward the display module 3, so that the conductive foam 42 on the PCB circuit board 41 contacts the A1\A2 position on the display module 3, so that the resistance test of the display module 3 can be performed;

[0078] After the display module 3 is tested, the solenoid valve control switch 55 is started to make the pneumatic telescopic part 51 drive the jig pressure head 4 to retract and reset, and then the next display module 3 to be tested is placed in the slot 22, and the above steps are repeated to realize the continuous PVD test of the display module 3;

[0079] When the test fixture is not in use, the positioning bolt 77 is rotated to slide the main protection frame 71 downward, so that the secondary protection frame 72 is flipped and reset to protect the PCB circuit board 41.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A PVD test tool, characterized in that: It includes: A fixture base (1), with a detection area (2) provided above the fixture base (1) for positioning the display module (3) during detection; A pneumatic telescopic unit (5), which is connected to one side of the top of the jig base (1) and is used for performing pneumatic telescopic movement in the direction of the jig base (1); A jig pressure head (4) is arranged above the detection area (2) and is used to connect to the output end of the pneumatic telescopic unit (5), so that when the pneumatic telescopic unit (5) is pneumatically telescoped, the jig pressure head (4) is driven to perform a contact test with the display module (3) built into the detection area (2).

2. The PVD test fixture according to claim 1, characterized in that: The detection area (2) comprises an insulating area (21) laid on the top of the fixture base (1) and a groove (22) formed in the insulating area (21).

3. The PVD test fixture according to claim 2, characterized in that: Steps (23) are also provided at the edges of the two side walls of the trough body (22) to form a suspended support when the display module (3) is placed.

4. The PVD test fixture according to claim 3, characterized in that: The bottom of the groove body (22) is also formed with an avoidance groove (24) to avoid the component area at the back of the display module (3) after the display module (3) is placed.

5. The PVD test fixture according to claim 4, characterized in that: The side wall of the groove body (22) is located above the step position (23) and also forms a limited position area (25) to control the placement accuracy of the display module (3) when it is placed to be tested.

6. The PVD test tool according to any one of claims 2 to 5, characterized in that: The insulating area (21) is wrapped with foam (26) for protecting the edge of the display module (3) from collision.

7. The PVD test fixture according to claim 1, characterized in that: A PCB circuit board (41) is also provided below the jig pressing head (4), and a metal PAD is formed by electroplating on the PCB circuit board (41) for attaching the conductive foam (42); There are two position areas A1\A2 on both sides above the display module (3) for contacting and connecting with the corresponding conductive foam (42) to detect the resistance of the PVD film layer of the display module (3).

8. The PVD test fixture according to claim 1, characterized in that: The pneumatic telescopic unit (5) comprises a pneumatic telescopic portion (51) connected to the top of the jig pressure head (4) and a support body (52) fixed on the jig base (1) and connected to the pneumatic telescopic portion (51); a gas pressure regulating switch (53) is provided on one side of the support body (52); and a gas pressure gauge (54) connected to the gas pressure regulating switch (53) is also provided on one side of the support body (52); A solenoid valve control switch (55) is also provided on the outside of the fixture base (1) for controlling the on and off of gas in the pneumatic telescopic unit (5) so as to achieve the lifting and lowering of the fixture pressure head (4) on the output end of the pneumatic telescopic part (51).

9. The PVD test fixture according to claim 1, characterized in that: A connector interface (6) is provided on one side of the fixture base (1) above and adjacent to the detection area (2), and is used to connect the module FPC and the test base plate to perform PVD resistance testing.

10. The PVD test fixture according to claim 1, characterized in that: The jig pressing head (4) is provided with a protection unit (7) for protecting the jig pressing head, the protection unit (7) comprising a main protection frame (71) slidably sleeved on the outside of the jig pressing head (4) and a positioning bolt (77) rotatably provided on the main protection frame (71) for threaded connection with the jig pressing head (4); The protection unit (7) further comprises a rotating frame (73) rotatably connected to both sides of the jig pressure head (4), and a free end of the rotating frame (73) penetrates through a strip groove (74) on the main protection frame (71) and is fixedly assembled with the auxiliary protection frame (72); A tooth groove (75) is formed on one side wall of the strip groove (74) provided on the main protection frame (71); a gear (76) meshing with the tooth groove (75) is coaxially fixed to the rotating frame (73) at the position of the strip groove (74); when the main protection frame (71) slides, the auxiliary protection frame (72) is driven to close or open, so as to meet the protection and detection requirements of the jig pressure head (4).

Images