{"id":230632,"date":"2014-07-29T22:00:00","date_gmt":"2014-07-29T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/de-la-poudre-de-phosphore-pour-rendre-les-ecrans-led-plus-dynamiques\/"},"modified":"2014-07-29T22:00:00","modified_gmt":"2014-07-29T22:00:00","slug":"de-la-poudre-de-phosphore-pour-rendre-les-ecrans-led-plus-dynamiques","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/de-la-poudre-de-phosphore-pour-rendre-les-ecrans-led-plus-dynamiques\/","title":{"rendered":"De la poudre de phosphore pour rendre les \u00e9crans LED plus dynamiques"},"content":{"rendered":"<\/p>\n

Les chercheurs ont mis au point une poudre de phosphore qui, lorsqu’elle est implantée dans une LED, modifie les propriétés des LED et augmente la brillance et le contraste de l’image produite.<\/p>\n

La solution de fluorosilicate de potassium (PFS) dopée avec du manganèse qui a été de brevetée par GE agit comme un émetteur de rouge dans une LED. L’utilisation du phosphore PFS dans les systèmes LED génère une couleur rouge plus forte, plus propre et plus vraie que le nitrure de phosphore. Il en résulte une image moins pâle et donc plus riche. <\/p>\n<\/p>\n

Pour Anant Setlur, chercheur sur les matériaux et responsable des luminophores à GE Global Research : " les écrans rétro-éclairé sont constitués d’un réseau de diodes électroluminescentes alimentées dans un guide d’onde à filtres rouge, vert et bleu. Dans la plupart des appareils disponibles aujourd’hui sur le marché, la composante rouge de la LED est de mauvaise qualité, ce qui provoque des verts à l’air jaunâtre, avec une incidence négative sur la qualité globale de l’image. Ce que nous avons réalisé permet d’apporter des couleurs plus naturelles sur les écrans des produits d’électronique grand public. La différence est nette, avec une superbe qualité d’image. "<\/em><\/p>\n<\/p>\n

Pour cette technologie, GE Ventures a fournit la licence à Sharp Corporation et Nichia Corporation, qui sont tous deux des fabricants de LED contenant des substances luminescentes PFS pour une utilisation des LED sur des écrans LCD rétro-éclairés comme des tablettes et smartphones. <\/p>\n

Site GE R&D<\/a>\n<\/p>\n

Articles associés<\/strong><\/p>\n

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Les chercheurs de GE Lighting et GE Global Research affirment avoir am\u00e9lior\u00e9 la couleur et la nettet\u00e9 des images affich\u00e9es sur les \u00e9crans \u00e0 LED de diff\u00e9rents t\u00e9l\u00e9phones portables, tablettes ou encore t\u00e9l\u00e9viseurs. <\/p>\n","protected":false},"author":22,"featured_media":230633,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-230632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","domains-electronique-eci"],"acf":[],"yoast_head":"De la poudre de phosphore pour rendre les \u00e9crans LED plus dyna...<\/title>\n<meta name=\"description\" content=\"Les chercheurs de GE Lighting et GE Global Research affirment avoir am\u00e9lior\u00e9 la couleur et la nettet\u00e9 des images affich\u00e9es sur les \u00e9crans \u00e0 LED de...\" 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