{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9673158","patent":{"patent_number":"US-9673158","title":"Formation of connectors without UBM","assignee":null,"inventors":[],"filing_date":"2015-02-24T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L","H01L"],"num_claims":20,"abstract":"A device includes a substrate, a metal pad over the substrate, and a passivation layer having a portion over the metal pad. A post-passivation interconnect (PPI) is electrically coupled to the metal pad, wherein the PPI includes a portion over the metal pad and the passivation layer. A polymer layer is over the PPI. A solder ball is over the PPI. A compound includes a portion adjoining the solder ball and the polymer layer, wherein the compound includes flux and a polymer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Formation of connectors without UBM","description":"A device includes a substrate, a metal pad over the substrate, and a passivation layer having a portion over the metal pad. A post-passivation interconnect (PPI) is electrically coupled to the metal p","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9673158","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9673158","citation_suggestion":"Patentable. \"Formation of connectors without UBM\" (US-9673158). https://patentable.app/patents/US-9673158","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9673158","json":"https://patentable.app/api/llm-context/US-9673158","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:15:11.999Z"}