Jig for measuring performance of conductive PVD coating of cover plate
By designing a test bench with liftable conductive sponge contact blocks, the problem of lack of specialized testing equipment in the prior art is solved, and the performance of the cover PVD resistor layer is achieved quickly and accurately measured, ensuring the accuracy of electrocardiogram acquisition.
Patent Information
- Application Number
- CN202421594195.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The lack of specialized testing equipment in the prior art to individually test the performance of the PVD resistor layer on the cover plate, resulting in the inability to ensure the accuracy of ECG acquisition.
A fixture is designed to measure the performance of the cover plate with conductive PVD coating. By setting up a liftable conductive sponge contact block on the test bench and communicating with the PVD resistor layer on the cover plate, and using the test equipment to communicate with the conductive sponge contact block to perform performance testing.
The performance of the PVD resistor layer is quickly and simply measured, ensuring the accuracy of electrocardiogram acquisition, and solving the problem that the performance of the PVD resistor layer cannot be ensured in the prior art.
Smart Images
Figure CN222994576U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a fixture for measuring the performance of a conductive PVD coating on a cover plate. Background Technique
[0002] With the progress of technology, smart wearable watches are becoming more and more diversified and intelligent. More and more high-end smart wearable watches usually have an electrocardiogram (ECG) test function. Some of them deposit a conductive PVD resistance layer on the cover plate to collect the ECG data of the human body. Therefore, the performance of the conductive PVD resistance deposited on the cover plate is particularly important, and its performance determines the accuracy of ECG collection.
[0003] However, when the wearable watch leaves the factory, there is no test equipment to separately test the PVD resistance layer on the cover plate, so the performance of the PVD resistance layer cannot be ensured, and thus the accuracy of ECG collection is not guaranteed. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fixture for measuring the performance of a conductive PVD coating on a cover plate.
[0005] The purpose of the utility model is achieved by the following technical solutions:
[0006] A fixture for measuring the performance of a conductive PVD coating on a cover plate, comprising: a test bench, on which a cover plate with a PVD resistance layer is placed. The side of the cover plate with the PVD resistance layer faces upward and is placed on the test bench. A lifting assembly is arranged on the test bench, and a conductive sponge contact block for communicating with the PVD resistance layer is arranged on the lifting assembly. The lifting assembly controls the conductive sponge contact block to descend and communicate with the PVD resistance layer to test the performance of the PVD resistance layer.
[0007] In one embodiment, a receiving groove for receiving the cover plate is formed on the test bench, and the side of the cover plate with the PVD resistance layer faces upward and is received in the receiving groove.
[0008] In one embodiment, a mounting bracket is fixed on the test bench, the lifting assembly is arranged on the mounting bracket, the lifting assembly includes a cylinder fixed on the mounting bracket and a driving block connected to one end of the cylinder, the conductive sponge contact block is located at the bottom of the driving block, and the conductive sponge contact block is located directly above the cover plate.
[0009] In one embodiment, an air valve inlet valve and a pressure regulating valve are fixed on one side of the mounting bracket. The air valve inlet valve is connected to the pressure regulating valve, and the pressure regulating valve is electrically connected to the cylinder.
[0010] In one embodiment, a switch button is provided on the test bench, and the pneumatic pressure regulating valve is connected to the switch button. The switch button is used to control the opening or closing of the pneumatic pressure regulating valve.
[0011] In one embodiment, the size of the conductive sponge contact block is larger than that of the cover plate, and the conductive sponge contact block has conductivity.
[0012] In one embodiment, a power supply device for supplying power to the PVD resistance layer is provided on the test bench, and the power supply device is connected to the PVD resistance layer.
[0013] In one embodiment, an FPC is bonded to one side of the cover plate, and one end of the FPC away from the cover plate is electrically connected to the power supply device.
[0014] In one embodiment, a test device is provided on one side of the test bench, and a wire for connection is provided between the conductive sponge contact block and the test device.
[0015] In one embodiment, a foam is provided on the surface of the cover plate, and the foam is used to buffer the downward pressure of the conductive sponge contact block.
[0016] Compared with the prior art, the present utility model has at least the following advantages:
[0017] A fixture for measuring the performance of a cover plate with a conductive PVD coating of the present utility model is connected to the PVD resistance layer on the cover plate through a liftable conductive sponge contact block for testing, and the test device is connected to the conductive sponge contact block to test the performance of the PVD resistance layer. The operator only needs to control the switch button to quickly measure the performance of the PVD resistance layer, and the operation is simple and can ensure the performance of the PVD resistance layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.
[0019] Figure 1 It is a schematic structural diagram of a fixture for measuring the performance of a cover plate with a conductive PVD coating provided by the present utility model;
[0020] Figure 2 It is a schematic structural diagram of another perspective of a fixture for measuring the performance of a cover plate with a conductive PVD coating provided by the present utility model.
[0021] Description of the drawings: 10. Test bench; 11. Accommodating groove; 20. Cover plate; 21. PVD resistance layer; 22. FPC; 30. Mounting rack; 31. Cylinder; 32. Driving block; 33. Air inlet valve; 34. Pressure regulating valve; 40. Conductive sponge contact block; 50. Foam; 60. Switch button; 70. Power supply device; 80. Testing device; 90. Wire. Detailed implementation manners
[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.
[0023] A fixture for measuring the performance of a cover plate with a conductive PVD coating, referring to Figure 1 and Figure 2 , includes a test bench 10, on which a cover plate 20 with a PVD resistance layer 21 is placed, and the side of the cover plate 20 with the PVD resistance layer 21 is placed upwards on the test bench 10.
[0024] Referring to Figure 1 and Figure 2 , a accommodating groove 11 for accommodating the cover plate 20 is opened on the test bench 10, the depth of the accommodating groove 11 is adapted to the thickness of the cover plate 20, and the side of the cover plate 20 with the PVD resistance layer 21 is accommodated upwards in the accommodating groove 11.
[0025] Referring to Figure 1 and Figure 2 , a mounting rack 30 is fixed on the test bench 10, and the mounting rack 30 is located on one side of the cover plate 20. A lift assembly that can be lifted and lowered is provided on the mounting rack 30, and a conductive sponge contact block 40 communicating with the PVD resistance layer 21 on the surface of the cover plate 20 is provided on the lift assembly. The conductive sponge contact block 40 descends through the lift assembly to communicate with the PVD resistance layer 21 on the surface of the cover plate 20, so as to test the performance of the PVD resistance layer 21.
[0026] Referring to Figure 1 and Figure 2 , a foam 50 is fixed on the surface of the cover plate 20, and the foam 50 plays a buffering role in the downward pressure of the conductive sponge contact block 40, so as to avoid damaging the PVD resistance layer 21 due to excessive downward pressure of the conductive sponge contact block 40.
[0027] Referring to Figure 1 and Figure 2, the lifting assembly includes a cylinder 31 fixed to the mounting bracket 30 and a driving block 32 connected to one end of the cylinder 31. The cylinder 31 is vertically arranged, and the piston rod of the cylinder 31 is connected downward to the driving block 32. The conductive sponge contact block 40 is fixed to the bottom of the driving block 32, and the conductive sponge contact block 40 is located directly above the cover plate 20. The cylinder 31 is controlled to lower the driving block 32 so that the conductive sponge contact block 40 descends to communicate with the PVD resistance layer 21.
[0028] Refer to Figure 1 and Figure 2 , a valve inlet valve 33 and a pressure regulating valve 34 are fixed to one side of the mounting bracket 30. The valve inlet valve 33 is connected to the pressure regulating valve 34, and the pressure regulating valve 34 is electrically connected to the cylinder 31. The pressure regulating valve 34 can control the operation of the cylinder 31 to control the moving distance, moving speed, and downward pressure of the conductive sponge contact block 40.
[0029] Refer to Figure 1 , a switch button 60 is provided on the test bench 10. The pressure regulating valve 34 is connected to the switch button 60. The opening or closing of the pressure regulating valve 34 can be controlled through the switch button 60, thereby controlling the lifting of the conductive sponge contact block 40.
[0030] Further, refer to Figure 2 , the size of the conductive sponge contact block 40 is larger than that of the cover plate 20, so that when the conductive sponge contact block 40 is pressed down, it can fully contact the PVD resistance layer 21 on the surface of the cover plate 20. The conductive foam 50 contact block has good electrical conductivity, forms good conduction when contacting the PVD resistance layer 21 of the cover plate 20, and the conductive foam 50 has good deformation amount, can better contact the PVD resistance layer 21 of the cover plate 20, and will not damage the PVD resistance layer 21 of the cover plate 20.
[0031] Refer to Figure 1 , a power supply device 70 for energizing the PVD resistance layer 21 of the cover plate 20 is provided on the test bench 10. An FPC 22 is bonded to one side of the cover plate 20. One end of the FPC 22 away from the cover plate 20 is electrically connected to the power supply device 70. The power supply device 70 energizes the PVD resistance layer 21 to simulate the situation of the PVD resistance layer 21 in a normal energized environment to ensure the accuracy of the test results.
[0032] Further, refer to Figure 1 and Figure 2 , a test device 80 is provided on one side of the test bench 10. A wire 90 for connection is provided between the conductive sponge contact block 40 and the test device 80. The test device 80 obtains the situation of the PVD resistance layer 21 through the connection between the conductive sponge contact block 40 and the PVD resistance layer 21, thereby testing the performance of the PVD resistance layer 21.
[0033] Reference Figure 1 and Figure 2 In this fixture, the liftable conductive sponge contact block 40 is provided to communicate with the PVD resistance layer 21 on the cover plate 20 for testing. The testing device 80 is connected to the conductive sponge contact block 40 to test the performance of the PVD resistance layer 21. The operator only needs to control the switch button 60 to quickly measure the performance of the PVD resistance layer 21. The operation is simple and can ensure the performance of the PVD resistance layer 21.
[0034] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A jig for measuring the performance of a conductive PVD coating on a cover plate, characterized in that: include: A test bench (10), wherein a cover plate (20) with a PVD resistor layer (21) is placed on the test bench (10), and the side of the cover plate (20) with the PVD resistor layer (21) is placed on the test bench (10) with the side facing upwards, and a lifting component is provided on the test bench (10), and a conductive sponge contact block (40) for communicating with the PVD resistor layer (21) is provided on the lifting component, and the lifting component controls the conductive sponge contact block (40) to descend and communicate with the PVD resistor layer (21) so as to test the performance of the PVD resistor layer (21).
2. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 1, characterized in that: The test bench (10) is provided with a receiving groove (11) for receiving the cover plate (20); the cover plate (20) is received in the receiving groove (11) with the side of the cover plate (20) having the PVD resistance layer (21) facing upward.
3. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 2, characterized in that: A mounting frame (30) is fixed on the test bench (10); the lifting assembly is arranged on the mounting frame (30); the lifting assembly comprises a cylinder (31) fixed on the mounting frame (30) and a driving block (32) connected to one end of the cylinder (31); the conductive sponge contact block (40) is located at the bottom of the driving block (32); and the conductive sponge contact block (40) is located directly above the cover plate (20).
4. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 3, characterized in that: A valve intake valve (33) and an air pressure regulating valve (34) are fixed to one side of the mounting frame (30); the valve intake valve (33) is connected to the air pressure regulating valve (34); and the air pressure regulating valve (34) is electrically connected to the cylinder (31).
5. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 4, characterized in that: The test bench (10) is provided with a switch button (60), the air pressure regulating valve (34) is in communication with the switch button (60), and the switch button (60) is used to control the opening or closing of the air pressure regulating valve (34).
6. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 5, characterized in that: The size of the conductive sponge contact block (40) is larger than that of the cover plate (20), and the conductive sponge contact block (40) is conductive.
7. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 6, characterized in that: The test bench (10) is provided with a power supply device (70) for supplying power to the PVD resistance layer (21); the power supply device (70) is connected to the PVD resistance layer (21).
8. The jig for measuring the performance of the conductive PVD coating of the cover plate according to claim 7, characterized in that: An FPC (22) is bound to one side of the cover plate (20), and an end of the FPC (22) away from the cover plate (20) is electrically connected to the power supply device (70).
9. A jig for measuring the performance of a conductive PVD coating on a cover plate according to claim 8, characterized in that: A testing device (80) is arranged on one side of the testing table (10), and a wire (90) for communication is arranged between the conductive sponge contact block (40) and the testing device (80).
10. The jig for measuring the performance of the conductive PVD coating of the cover plate according to claim 3, characterized in that: The surface of the cover plate (20) is provided with foam (50), and the foam (50) is used to buffer the downward pressure of the conductive sponge contact block (40).