Microneedle jig and combination jig

Abstract

The invention relates to a microneedle jig, and a combination jig through which a circuit board to be measured to a tester. The microneedle jig comprises a microneedle disc; the microneedle disc comprises a plurality of microprobes; the microprobes are in one-to-one correspondence with measuring points of the circuit board to be measured; the microneedle jig also comprises a forwarding circuit board of which the surface is provided with a plurality of electric conduction units, and a connecting mechanism through which the electric conduction units are connected with the tester; and the electric conduction units are in one-to-one correspondence with the measuring points of the circuit board to be measured, and are electrically connected through the microprobes. The electric conduction units are in one-to-one correspondence with the measuring points of the circuit board to be measured and the microprobes are in one-to-one correspondence with the measuring points of the circuit board to be measured, so that the microprobes are basically vertically arranged between the electric conduction units and the measuring points; therefore the accuracy and reliability of a test are improved. Moreover, the microprobes are maintained through an added sponge layer and cannot fall, and the microneedle jig has a simple and reasonable structure and is low in cost. A guide plate is arranged to bring convenience to the leading of probes, so that the microneedle jig is assembled conveniently and reliably.

Description

technical field [0001] The invention relates to a testing jig for a circuit board, more specifically, to a microneedle jig for connecting a testing circuit board to a testing machine. Background technique [0002] After the circuit board manufacturer completes the production of the circuit board, the circuit on the circuit board must be tested for open circuit and short circuit. In the prior art, a special testing machine or a general testing machine is usually used to test the short circuit and open circuit of the circuit board. The circuit board to be tested is conductively connected to the testing machine through the test fixture, and the testing machine performs short circuit and open circuit tests on the points to be tested on the circuit board to be tested. [0003] With the integration of circuit boards getting higher and higher, the solder joints are getting smaller and denser, and some micro-needle test fixtures have appeared to meet the needs. The microneedle jig...

AI Technical Summary

Problems solved by technology

Wherein, the mesh contact is a general-purpose layout with high density. Although it improves the adaptability of the product, it will cause at least the following defects: 1. Since the mesh contacts are evenly distributed, it will cause microneedles 2. The density of the mesh contacts is high, which requires high drilling process of the transfer circuit board, which increases the processing cost

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