{"id":2280,"date":"2026-04-17T02:27:09","date_gmt":"2026-04-17T02:27:09","guid":{"rendered":"https:\/\/www.zmsh-semitech.com\/?p=2280"},"modified":"2026-04-17T02:28:35","modified_gmt":"2026-04-17T02:28:35","slug":"tgv-technology-for-advanced-packaging","status":"publish","type":"post","link":"https:\/\/www.zmsh-semitech.com\/hu\/tgv-technology-for-advanced-packaging\/","title":{"rendered":"\u00dcvegeken kereszt\u00fcli (TGV) technol\u00f3gia a fejlett csomagol\u00e1sokhoz"},"content":{"rendered":"<h2 class=\"wp-block-heading\">1. Introduction: Industry Context and Engineering Background<\/h2>\n\n\n\n<p>In advanced semiconductor packaging, the continuous demand for higher bandwidth, lower signal loss, and improved thermal stability is driving a transition from traditional organic substrates toward more advanced interconnect materials.<\/p>\n\n\n\n<p>Based on observed industrial development trends in advanced packaging and substrate manufacturing lines, glass substrates have increasingly demonstrated strong potential in high-frequency and high-density applications due to their:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Low dielectric constant (Dk)<\/li>\n\n\n\n<li>Low dielectric loss (Df)<\/li>\n\n\n\n<li>High dimensional stability<\/li>\n\n\n\n<li>Excellent electrical insulation properties<\/li>\n<\/ul>\n\n\n\n<p>Among glass-based interconnect technologies, Through Glass Via (TGV) has emerged as a key enabling solution for next-generation packaging architectures including 2.5D interposers, RF modules, and high-performance computing systems.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-1024x1024.jpg\" alt=\"\" class=\"wp-image-2281\" srcset=\"https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-1024x1024.jpg 1024w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-300x300.jpg 300w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-150x150.jpg 150w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-768x768.jpg 768w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-12x12.jpg 12w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-600x600.jpg 600w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging-100x100.jpg 100w, https:\/\/www.zmsh-semitech.com\/wp-content\/uploads\/2026\/04\/Through-Glass-Via-TGV-Technology-for-Advanced-Packaging.jpg 1120w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">2. Technical Definition of TGV (Through Glass Via)<\/h2>\n\n\n\n<p><strong>Through Glass Via (TGV)<\/strong> refers to a vertical interconnection structure formed by creating micro-scale vias in a glass substrate, followed by metallization to establish electrical connectivity between both surfaces.<\/p>\n\n\n\n<p>From a manufacturing standpoint, TGV is not a single process, but a multi-stage integrated system combining laser modification, wet etching, metallization, electroplating, and planarization technologies.<\/p>\n\n\n\n<p>Compared with silicon via technology (TSV), TGV provides:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lower RF signal attenuation<\/li>\n\n\n\n<li>Reduced parasitic capacitance<\/li>\n\n\n\n<li>Improved high-frequency transmission stability<\/li>\n\n\n\n<li>Enhanced dimensional control at wafer level<\/li>\n\n\n\n<li>Better optical-electrical integration compatibility<\/li>\n<\/ul>\n\n\n\n<p>These characteristics make TGV particularly suitable for RF front-end modules, AI packaging interposers, and optoelectronic integration platforms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Via Formation Engineering Capabilities (Process-Level View)<\/h2>\n\n\n\n<p>In industrial production environments, TGV via formation is typically achieved through a hybrid process of laser modification and chemical etching.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 Structural Processing Capability<\/h3>\n\n\n\n<p>Current mature process capability ranges include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aspect ratio up to 15:1<\/strong><br>Supporting deep via formation in thin glass substrates.<\/li>\n\n\n\n<li><strong>Glass thickness range: 0.2 mm to 1.5 mm<\/strong><br>Covering ultra-thin devices and standard interposer platforms.<\/li>\n\n\n\n<li><strong>High geometric precision control:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Circularity > 95%<\/li>\n\n\n\n<li>Waist ratio > 0.9<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>These parameters indicate stable via morphology, which is critical for ensuring uniform metallization and minimizing electrical resistance variation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 Engineering Insight (Process Stability Consideration)<\/h3>\n\n\n\n<p>From a manufacturing perspective, maintaining via geometry consistency is one of the key determinants of yield. Inconsistent via profiles can lead to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Non-uniform seed layer deposition<\/li>\n\n\n\n<li>Voiding during electroplating<\/li>\n\n\n\n<li>Increased electrical resistance variation<\/li>\n<\/ul>\n\n\n\n<p>Therefore, laser alignment accuracy and etching isotropy control are critical process parameters.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. Metallization and Copper Filling Technology<\/h2>\n\n\n\n<p>TGV metallization is widely recognized as one of the most technically challenging steps due to the high aspect ratio and confined geometry of glass vias.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 Multi-Layer Copper Deposition Process<\/h3>\n\n\n\n<p>A typical industrial process flow includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sputtering (seed layer formation)<\/li>\n\n\n\n<li>Electroless copper deposition<\/li>\n\n\n\n<li>Electroplating (via filling)<\/li>\n\n\n\n<li>K\u00e9miai mechanikai pol\u00edroz\u00e1s (CMP)<\/li>\n<\/ul>\n\n\n\n<p>This multi-stage approach ensures:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuous conductive pathways<\/li>\n\n\n\n<li>Uniform copper distribution along via sidewalls<\/li>\n\n\n\n<li>Stable electrical performance across wafer-level structures<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 Process Engineering Challenges<\/h3>\n\n\n\n<p>Based on industrial process characteristics, key technical challenges include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mass transport limitation in high aspect ratio vias<\/li>\n\n\n\n<li>Ion distribution uniformity during electroplating<\/li>\n\n\n\n<li>Stress accumulation during copper deposition<\/li>\n\n\n\n<li>Interface adhesion reliability between glass and metal layers<\/li>\n<\/ul>\n\n\n\n<p>Advanced plating system design and flow field optimization are typically required to mitigate these effects.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. Equipment System Architecture and Process Integration<\/h2>\n\n\n\n<p>In industrial TGV manufacturing lines, equipment performance directly determines process yield, especially in wet process environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 Via Drying and Defect Control System<\/h3>\n\n\n\n<p>After wet processing steps, via drying systems are used to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduce liquid residue-induced micro-cracking<\/li>\n\n\n\n<li>Improve structural stability of etched vias<\/li>\n\n\n\n<li>Increase overall yield in post-etch processes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 Copper Process and Mechanical Reliability Optimization<\/h3>\n\n\n\n<p>Copper-related process equipment contributes to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduction of mechanical breakage during polishing<\/li>\n\n\n\n<li>Improved adhesion strength between layers<\/li>\n\n\n\n<li>Enhanced via reliability under thermal cycling<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5.3 Laser Modification Precision Control<\/h3>\n\n\n\n<p>Laser systems used in TGV formation provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stable modification paths in brittle glass materials<\/li>\n\n\n\n<li>High perpendicularity of via sidewalls<\/li>\n\n\n\n<li>Accurate positional alignment across large-area substrates<\/li>\n<\/ul>\n\n\n\n<p>These factors significantly impact downstream etching uniformity and metallization success rate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Integrated TGV Manufacturing Process Flow<\/h2>\n\n\n\n<p>A typical industrial TGV production system can be divided into three major modules:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6.1 Via Formation Module<\/h3>\n\n\n\n<p>Process sequence:<\/p>\n\n\n\n<p>Laser modification \u2192 Wet etching \u2192 AOI inspection<\/p>\n\n\n\n<p>Material transformation:<\/p>\n\n\n\n<p>Glass substrate \u2192 High-precision glass via structure<\/p>\n\n\n\n<p>Alapfelszerel\u00e9s:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Glass via etching system (Wet Bench)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.2 Metallization &amp; Filling Module<\/h3>\n\n\n\n<p>Process sequence:<\/p>\n\n\n\n<p>Sputtering \u2192 Electroless plating \u2192 Electroplating \u2192 CMP<\/p>\n\n\n\n<p>Alapfelszerel\u00e9s:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pre-clean wet bench system<\/li>\n\n\n\n<li>Electroless copper plating system<\/li>\n\n\n\n<li>Double-side electroplating system (rack plating configuration)<\/li>\n<\/ul>\n\n\n\n<p>This module determines electrical conductivity and long-term reliability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6.3 Redistribution Layer (RDL) Formation Module<\/h3>\n\n\n\n<p>Process sequence:<\/p>\n\n\n\n<p>Photoresist coating \u2192 Lithography \u2192 Development \u2192 Etching<\/p>\n\n\n\n<p>Alapfelszerel\u00e9s:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Development wet bench system<\/li>\n\n\n\n<li>UBM etching system (single-wafer glass processing)<\/li>\n<\/ul>\n\n\n\n<p>This stage enables lateral interconnect routing for chip-level integration.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. Reliability and Manufacturing Challenges<\/h2>\n\n\n\n<p>Despite its advantages, TGV technology still faces several engineering and industrialization challenges:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High aspect ratio copper void control<\/li>\n\n\n\n<li>Thermal stress management in brittle glass materials<\/li>\n\n\n\n<li>Micro-crack suppression during wet\/dry transitions<\/li>\n\n\n\n<li>Cross-contamination control in wet bench environments<\/li>\n\n\n\n<li>Large-area substrate uniformity control<\/li>\n<\/ul>\n\n\n\n<p>From an industrial yield perspective, these challenges are primarily addressed through equipment-level optimization and process integration rather than single-step improvements.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">8. Industry Development Trends and Future Outlook<\/h2>\n\n\n\n<p>Based on current semiconductor packaging development trajectories, TGV technology is expected to evolve toward:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Aspect ratios exceeding 20:1<\/li>\n\n\n\n<li>Fully automated wet process integration platforms<\/li>\n\n\n\n<li>Low-stress copper filling materials and barrier systems<\/li>\n\n\n\n<li>High-frequency (RF\/mmWave) optimized interposer structures<\/li>\n\n\n\n<li>AI computing and HPC packaging integration<\/li>\n<\/ul>\n\n\n\n<p>With the rapid expansion of AI-driven computing infrastructure, TGV is expected to become a key enabling technology in next-generation advanced packaging ecosystems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">9. Conclusion<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.zmsh-semitech.com\/hu\/termekkategoria\/laser-drilling-machine\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">Through Glass Via (TGV) technology <\/mark><\/a>represents a critical advancement in semiconductor interconnect engineering, transforming glass substrates from passive insulating materials into functional high-density interconnection platforms.<\/p>\n\n\n\n<p>Its key technical advantages include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High-density vertical interconnect capability<\/li>\n\n\n\n<li>Excellent RF and electrical performance<\/li>\n\n\n\n<li>Superior dimensional stability<\/li>\n\n\n\n<li>Strong compatibility with advanced packaging architectures<\/li>\n<\/ul>\n\n\n\n<p>From an industrial perspective, the success of TGV implementation relies heavily on the integration of laser processing systems, wet etching equipment, and advanced electroplating platforms.<\/p>\n\n\n\n<p>As advanced packaging continues to evolve toward higher performance and lower signal loss requirements, TGV is expected to play an increasingly important role in AI, RF, and optoelectronic integration systems.<\/p>","protected":false},"excerpt":{"rendered":"<p>1. Introduction: Industry Context and Engineering Background In advanced semiconductor packaging, the continuous demand for higher bandwidth, lower signal loss, and improved thermal stability is driving a transition from traditional organic substrates toward more advanced interconnect materials. Based on observed industrial development trends in advanced packaging and substrate manufacturing lines, glass substrates have increasingly demonstrated [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2281,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[24],"tags":[1107,1112,1106,1108,1110,1111,1109,1105,1104,1113],"class_list":["post-2280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","tag-advanced-semiconductor-packaging","tag-ai-chip-packaging-interposer","tag-glass-interposer-technology","tag-high-aspect-ratio-glass-via","tag-laser-drilling-glass-via-process","tag-rf-glass-substrate-interconnect","tag-tgv-electroplating-system","tag-tgv-manufacturing-process","tag-through-glass-via-technology","tag-wet-bench-tgv-process-equipment"],"_links":{"self":[{"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/posts\/2280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/comments?post=2280"}],"version-history":[{"count":1,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/posts\/2280\/revisions"}],"predecessor-version":[{"id":2282,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/posts\/2280\/revisions\/2282"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/media\/2281"}],"wp:attachment":[{"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/media?parent=2280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/categories?post=2280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zmsh-semitech.com\/hu\/wp-json\/wp\/v2\/tags?post=2280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}