Patent ID: 11933818
Assignee: SK HYNIX INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A probe test card comprising:
a substrate having a first surface at which a trench is formed, and a second surface opposite to the first surface;
a plurality of test needles arranged in the trench, each test needle including a first end and a second end being opposite to the first end; and
a fixing layer filled in the trench to fix the plurality of test needles in the trench, a thickness of the fixing layer being same with a depth of the trench;
wherein the fixing layer comprises a ceramic powder, and
wherein the first end of the test needle is non-removably fixed in the trench by the fixing layer and the second end of the test needle protrudes from the trench of the substrate to test a device under test (DUT).