{"id":749,"date":"2026-03-17T15:27:32","date_gmt":"2026-03-17T07:27:32","guid":{"rendered":"https:\/\/lighte.gongjionline.cn\/cus_case\/jing-yuan-hou-du-yu-ttv-gao-jing-du-ce-liang\/"},"modified":"2026-07-14T17:03:55","modified_gmt":"2026-07-14T09:03:55","slug":"wafer-thickness-ttv-measurement","status":"publish","type":"case","link":"https:\/\/www.lightegroup.com\/fr\/case\/wafer-thickness-ttv-measurement\/","title":{"rendered":"Mesure haute pr\u00e9cision de l\u2019\u00e9paisseur des plaquettes et de la TTV (Total Thickness Variation)"},"content":{"rendered":"<p>Dans le processus de fabrication et d\u2019amincissement des plaquettes, l\u2019\u00e9paisseur totale de la plaquette ainsi que la TTV (variation totale d\u2019\u00e9paisseur) constituent des param\u00e8tres cl\u00e9s qui influencent l\u2019alignement en lithographie et le rendement du conditionnement. La mesure par contact traditionnelle est peu efficace et risque d\u2019endommager la surface de la plaquette. LightE utilise une solution de mesure optique sans contact pour r\u00e9aliser un balayage haute pr\u00e9cision de la hauteur sur la surface de la plaquette, permettant ainsi une mesure stable de l\u2019\u00e9paisseur et de la TTV, tout en garantissant la pr\u00e9cision des mesures et en \u00e9vitant tout dommage \u00e0 la plaquette.<\/p>","protected":false},"featured_media":1313,"template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"High-precision measurement of wafer thickness and TTV - LightE Application","_seopress_titles_desc":"In the wafer manufacturing and thinning process, the overall thickness of the wafer and TTV (Total Thickness Variation) are key parameters that affect pho...","_seopress_robots_index":"","_seopress_analysis_target_kw":""},"class_list":["post-749","case","type-case","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.lightegroup.com\/fr\/wp-json\/wp\/v2\/case\/749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lightegroup.com\/fr\/wp-json\/wp\/v2\/case"}],"about":[{"href":"https:\/\/www.lightegroup.com\/fr\/wp-json\/wp\/v2\/types\/case"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lightegroup.com\/fr\/wp-json\/wp\/v2\/media\/1313"}],"wp:attachment":[{"href":"https:\/\/www.lightegroup.com\/fr\/wp-json\/wp\/v2\/media?parent=749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}