Method of realizing photoetching of rewiring metal layer
A metal layer and rewiring technology, which is applied in the field of rewiring metal layer lithography, can solve the problem of low yield rate of rewiring metal layer, and achieve the effect of eliminating air bubbles, improving quality and reducing viscosity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0026] As mentioned in the background, with the further increase of the process node, the yield rate of the redistribution metal layer formed in the prior art is low.
[0027] After further research, it was found that the low yield rate of the rewiring metal layer was mainly caused by the photoresist layer used to transfer the rewiring pattern. Specifically, please refer to figure 2 and image 3 , as the process node further increases, the size of the silicon hole 101 formed in the silicon wafer 100 becomes smaller and smaller. When the photoresist 103 is spin-coated on the surface of the silicon wafer 100, if the spin-coated photoresist is thinner, it is difficult to As a mask for subsequent etching to form the rewiring metal layer; if the photoresist that is spin-coated is thicker, it is difficult to completely fill the silicon hole 101 due to its high viscosity, and the photoresist is deposited on the top of the silicon hole 101. It is difficult to enter the bottom of th...
PUM
Property | Measurement | Unit |
---|---|---|
thickness | aaaaa | aaaaa |
depth | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com