Wafer tapeout method
A wafer and tape-out technology, applied in the field of wafer tape-out, can solve the problems of device scrap, splintered fragments, high stress of gallium nitride epitaxial layer, etc.
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[0025] An embodiment of the present invention provides a wafer tape-out method. In the embodiment of the present invention, the front side treatment process is performed on the wafer, and the scribe groove is made during the front side treatment process; after the front side treatment process is completed on the wafer, the scribe groove is etched; The wafer undergoes backside processing. Since the scribe groove is etched after the front-side treatment process, the stress inside the wafer can be released, which greatly reduces the risk of subsequent steps such as thinning the back gold and other debris fragments.
[0026] In order to make the purpose, technical solutions and beneficial effects of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present inven...
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