{"id":17807,"date":"2025-12-31T01:58:05","date_gmt":"2025-12-31T01:58:05","guid":{"rendered":"https:\/\/cob-leddisplay.com\/?p=17807"},"modified":"2025-12-31T06:06:02","modified_gmt":"2025-12-31T06:06:02","slug":"how-to-distinguish-between-high-quality-and-low-quality-led","status":"publish","type":"post","link":"https:\/\/cob-leddisplay.com\/fr\/how-to-distinguish-between-high-quality-and-low-quality-led\/","title":{"rendered":"Comment distinguer les LED de haute et de basse qualit\u00e9"},"content":{"rendered":"<h4><em><span style=\"color: #008080;\">1) Performances d&#039;affichage et qualit\u00e9 d&#039;image :<\/span><\/em><\/h4>\n<p><em>\u2460La luminosit\u00e9 s&#039;adapte \u00e0 l&#039;environnement, environ 600 cd\/m\u00b2 \u00e0 l&#039;int\u00e9rieur, \u22655000 cd\/m\u00b2 \u00e0 l&#039;ext\u00e9rieur, et des niveaux de gris \u00e9lev\u00e9s, tels que 16 bits ou plus, offrent des couleurs plus riches.<\/em><\/p>\n<p><em>\u2461 La balance des blancs est pure et exempte de dominante de couleur, les couleurs sont vives et pr\u00e9cises, l&#039;\u00e9cran entier est exempt de taches de couleur et de zones sombres, et dispose d&#039;une technologie de correction de luminosit\u00e9 ou de chrominance \u00e0 point unique.<\/em><\/p>\n<p><em>\u2462L&#039;\u00e9cran est plat, sans irr\u00e9gularit\u00e9 notable de luminosit\u00e9 ou d&#039;obscurit\u00e9, le taux de d\u00e9fauts de pixels est faible, g\u00e9n\u00e9ralement inf\u00e9rieur \u00e0 un sur dix mille sur l&#039;ensemble de l&#039;\u00e9cran.<\/em><\/p>\n<p><em>\u2463Des taux de rafra\u00eechissement \u00e9lev\u00e9s \u22651920 Hz garantissent des images stables et sans scintillement, de larges angles de vision horizontaux ou verticaux, tels que 120\u00b0\/45\u00b0, offrent une excellente vision lat\u00e9rale.<\/em><\/p>\n<h4><span style=\"color: #008080;\"><em>2) Mat\u00e9riel de base et proc\u00e9d\u00e9s de fabrication :<\/em><\/span><\/h4>\n<p><em>\u2460 Plus le pas de pixel est petit, plus la densit\u00e9 de pixels est \u00e9lev\u00e9e et plus l&#039;image est nette lorsqu&#039;elle est vue de pr\u00e8s ; le choix doit \u00eatre adapt\u00e9 \u00e0 la distance de vision optimale.<\/em><\/p>\n<p><em>\u2461 La surface de l&#039;\u00e9cran est plate et les coutures entre les panneaux sont petites, le niveau de protection doit \u00eatre s\u00e9lectionn\u00e9 en fonction de l&#039;environnement, tel que IP65 \u00e9tanche \u00e0 l&#039;eau et \u00e0 la poussi\u00e8re pour une utilisation en ext\u00e9rieur.<\/em><\/p>\n<p><em>\u2462 Le pilotage par cathode commune est plus \u00e9conome en \u00e9nergie que le pilotage par anode commune et constitue la tendance du secteur ; il convient de v\u00e9rifier s&#039;il dispose de fonctionnalit\u00e9s intelligentes d&#039;\u00e9conomie d&#039;\u00e9nergie.<\/em><\/p>\n<h4><span style=\"color: #008080;\"><em>3) Stabilit\u00e9 et fiabilit\u00e9 :<\/em><\/span><\/h4>\n<p><em>\u2460Une excellente dissipation de chaleur et une temp\u00e9rature de fonctionnement uniforme, avec une diff\u00e9rence de temp\u00e9rature maximale et moyenne \u22643\u2103 pendant l&#039;affichage sur \u00e9cran blanc, sont propices \u00e0 une stabilit\u00e9 \u00e0 long terme.<\/em><\/p>\n<p><em>\u2461 Le produit subit des tests de vieillissement rigoureux avant de quitter l&#039;usine, tels que 168 heures de fonctionnement continu sans d\u00e9faut.<\/em><\/p>\n<p><em>\u2462Les LED ont une dur\u00e9e de vie th\u00e9orique allant jusqu&#039;\u00e0 100 000 heures, mais la dur\u00e9e de vie r\u00e9elle de l&#039;\u00e9cran entier est affect\u00e9e par divers facteurs.<\/em><\/p>\n<h4><span style=\"color: #008080;\"><em>4) Qualifications et garanties de s\u00e9curit\u00e9 :<\/em><\/span><\/h4>\n<p><em>\u2460 Le produit doit obtenir la certification obligatoire chinoise 3C, qui est une exigence de base pour les ventes l\u00e9gales ; d&#039;autres certifications telles que la certification d&#039;efficacit\u00e9 \u00e9nerg\u00e9tique et la certification CE peuvent \u00eatre envisag\u00e9es au besoin.<\/em><\/p>\n<p><em>\u2461Faites attention aux indices de r\u00e9sistance au feu, tels que le grade V-0 et les indicateurs de toxicit\u00e9 de la fum\u00e9e, pour assurer la s\u00e9curit\u00e9 dans les lieux publics.<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17812\" src=\"http:\/\/cob-leddisplay.com\/wp-content\/uploads\/2025\/12\/indoor-led-screen.jpg\" alt=\"\" width=\"670\" height=\"893\" srcset=\"https:\/\/cob-leddisplay.com\/wp-content\/uploads\/2025\/12\/indoor-led-screen.jpg 670w, https:\/\/cob-leddisplay.com\/wp-content\/uploads\/2025\/12\/indoor-led-screen-9x12.jpg 9w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>1) Performances d&#039;affichage et qualit\u00e9 d&#039;image\u00a0: \u2460 La luminosit\u00e9 s&#039;adapte \u00e0 l&#039;environnement (environ 600\u00a0cd\/m\u00b2 en int\u00e9rieur, \u2265\u00a05\u00a0000\u00a0cd\/m\u00b2 en ext\u00e9rieur) et les niveaux de gris \u00e9lev\u00e9s (16\u00a0bits ou plus) offrent des couleurs plus riches. \u2461 La balance des blancs est pure et sans dominante de couleur. Les couleurs sont vives et pr\u00e9cises, et l&#039;\u00e9cran est exempt de zones sombres et de taches de couleur.<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"default","adv-header-id-meta":"","stick-header-meta":"default","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":"","background-image":"","background-repeat":"repeat","background-position":"center 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