{"id":820,"date":"2025-12-09T13:24:02","date_gmt":"2025-12-09T05:24:02","guid":{"rendered":"https:\/\/jeez-semicon.com\/?p=820"},"modified":"2025-12-16T11:42:41","modified_gmt":"2025-12-16T03:42:41","slug":"sapphire-wafer-grinding-and-polishing","status":"publish","type":"post","link":"https:\/\/jeez-semicon.com\/fr\/application\/sapphire-wafer-grinding-and-polishing\/","title":{"rendered":"Pr\u00e9polissage et polissage de plaquettes de saphir"},"content":{"rendered":"
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Le polissage des plaquettes de saphir a pour but de r\u00e9duire l'\u00e9paisseur finale du substrat \u00e0 la valeur cible souhait\u00e9e, en obtenant une TTV (variation totale de l'\u00e9paisseur) meilleure que \u00b12 \u03bcm et une rugosit\u00e9 de surface inf\u00e9rieure \u00e0 2 nm. Ces exigences op\u00e9rationnelles requi\u00e8rent des machines et des processus d'une grande pr\u00e9cision, d'une grande efficacit\u00e9 et d'une grande stabilit\u00e9. L'utilisation de la barbotine de polissage du saphir et des tampons de polissage de Gizhil Electronic pour le pr\u00e9polissage et le polissage CMP (Chemical Mechanical Polishing) permet la r\u00e9alisation de ce processus.<\/p>\n

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En utilisant les techniques de polissage CMP, les pi\u00e8ces en saphir peuvent atteindre la rugosit\u00e9 de surface souhait\u00e9e. Chaque plaquette de saphir polie subit un enl\u00e8vement de mati\u00e8re uniforme pendant le traitement, ce qui garantit un \u00e9tat de surface constant. En ajustant la charge de pression, il est possible d'atteindre un taux d'enl\u00e8vement de mati\u00e8re (MRR) de 1 \u00e0 2 \u03bcm par heure.<\/p>\n

Le polissage des plaquettes de saphir se divise en deux cat\u00e9gories : le polissage du plan A et le polissage du plan C. Du point de vue des propri\u00e9t\u00e9s du plan cristallin du saphir, le plan A a une duret\u00e9 plus \u00e9lev\u00e9e que le plan C. Les \u00e9crans de smartphones, qui appartiennent au plan A du cristal de saphir, pr\u00e9sentent les plus grandes difficult\u00e9s de polissage. En particulier, les \u00e9crans de smartphones, qui appartiennent \u00e0 l'orientation du cristal de saphir dans le plan A, pr\u00e9sentent les plus grandes difficult\u00e9s de polissage. Le polissage du saphir du plan A comprend g\u00e9n\u00e9ralement trois \u00e9tapes : le pon\u00e7age, le polissage au cuivre et le polissage fin. L'\u00e9tape de pr\u00e9polissage permet de r\u00e9duire la profondeur des rayures de surface caus\u00e9es par le processus de coupe des plaquettes de saphir brutes. Plus important encore, elle garantit que l'\u00e9paisseur des plaquettes de saphir brutes trait\u00e9es par lots est aussi homog\u00e8ne que possible.<\/p>\n<\/div>\n<\/div>\n

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The purpose of polishing sapphire wafers is to reduce the final thickness of the substrate to the desired target value, achieving a TTV (Total Thickness Variation) of better than \u00b12 …<\/p>","protected":false},"author":1,"featured_media":981,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application"],"acf":[],"_links":{"self":[{"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/posts\/820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/comments?post=820"}],"version-history":[{"count":1,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/posts\/820\/revisions"}],"predecessor-version":[{"id":823,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/posts\/820\/revisions\/823"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/media\/981"}],"wp:attachment":[{"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/media?parent=820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/categories?post=820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jeez-semicon.com\/fr\/wp-json\/wp\/v2\/tags?post=820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}