FPC electrical performance test method
The most basic FPC, the most basic is its electrical performance is good, otherwise, other details are not fully prepared, FPC is still a bad product that can not be used. Therefore, manufacturers must ensure that the performance of the FPC is intact before shipment, which is beyond doubt.
In order to ensure the performance of the FPC is intact, the manufacturer checks and tests the FPC. The main test methods are flying probe test and test fixture test.
The flying probe test is the latest solution to some of the major problems in electrical testing. It replaces the needle bed with a probe and uses two motor-driven, fast-moving electrical probes to make electrical measurements with the device's pins. The flying probe tester originally designed for bare boards also requires complex software and programs to support it; analog online testing can now be performed efficiently. The advent of flying probe testing has changed the testing methods for low throughput and fast steering assembly products. Tests that previously took weeks to develop can now be completed in a matter of hours, dramatically reducing product design cycles and time to market. During the flying probe test, the possibility of error detection is small, that is, a product with original performance is erroneously measured as a defective product, but the defective product is not measured as a good product. In addition, the flying probe test speed is relatively long compared to the use of the test fixture. When the flying probe test cost is lower than the test fixture manufacturing cost, the test method is used, that is, the flying probe test is used in proofing.
Test fixture test, test accuracy and accuracy is higher than flying probe test, because it can test multiple FPC at the same time, so its speed is faster than flying probe test, but different models of FPC need different corresponding test fixtures, the price is a set The test fixture, depending on the number of test pads, the number of thimbles and the size of the FPC panel, varies from a few hundred to several thousand and is recyclable. Therefore, in mass production, manufacturers often require customers to open test fixtures, saving labor, saving man-hours, reducing batch costs, improving test accuracy, and accelerating the entire production cycle.
Test fixture testing requires the use of a test machine, and flying probe testing requires the use of a flying probe tester, both of which can be operated by one person. The difference between the two is mainly because the flying probe test speed is slower and the cost is higher; the test fixture test is costly for the first time, does not require subsequent costs, and is fast