ATE (Automated Test Equipment) test boards are the core carriers of semiconductor testing, which can be divided into three categories according to the test stage and functional differences:
In 2019, a domestic high-end chip was successfully taped-out, and the R&D team cheered. But when the chip entered the testing stage, the ATE test board exposed a fatal flaw - the test results of thousands of chips repeatedly fluctuated abnormally. Engineers worked for 72 hours and finally found that the impedance mismatch of a tiny probe on the test board caused the signal to be distorted. After replacing the special test board, the chip yield rate jumped from 65% to 92% in an instant. At that m
In the electronic hardware industry, whether it is R&D, production or testing, you will always encounter all kinds of "boards". Among them, the three names of development board, test board, and aging board sound a bit similar, but the actual work is very different. Brothers who have just entered the industry may be confused, today we will break it open and crush it to chat, what are they all doing, why is one indispensable.
High precision machining requirements
Interlayer alignment accuracy: ≤0.002 inches (about 50 μm), laser positioning and optical alignment technology are required.
High thickness-to-diameter ratio drilling: Drilling with a thickness-diameter ratio of > 10:1 requires a pulse plating process to avoid uneven copper thickness on the hole wall.
Resin Plugging: Prevents copper plating from penetrating into the inner layer, ensuring signal integrity.
ATE, the full name of which is Automated Test Equipment, is a device used for the automated testing of functions and performance of wafers and chips after packaging. ATE devices can conduct parameter tests, functional tests, performance tests, fault detection, reliability tests, etc. on chips, playing a crucial role in the manufacturing process of semiconductors.