{"id":11469,"date":"2024-07-30T12:26:39","date_gmt":"2024-07-30T12:26:39","guid":{"rendered":"https:\/\/tepixel.com\/?p=11469"},"modified":"2024-12-14T09:42:05","modified_gmt":"2024-12-14T09:42:05","slug":"9-basic-concepts-to-know-before-buying-led-display","status":"publish","type":"post","link":"https:\/\/tepixel.com\/ja\/9-basic-concepts-to-know-before-buying-led-display\/","title":{"rendered":"LED \u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u3092\u8cfc\u5165\u3059\u308b\u524d\u306b\u77e5\u3063\u3066\u304a\u304f\u3079\u304d 9 \u3064\u306e\u57fa\u672c\u6982\u5ff5"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11469\" class=\"elementor elementor-11469\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-74a4e42 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"74a4e42\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9ff06f6\" data-id=\"9ff06f6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-477ce16 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"477ce16\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;container&quot;:&quot;#blog-details&quot;,&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__477ce16\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__477ce16\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__477ce16\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-737f6c7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"737f6c7\" data-element_type=\"section\" data-e-type=\"section\" id=\"blog-details\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-62d112d\" data-id=\"62d112d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-718df8e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"718df8e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-1d0152d\" data-id=\"1d0152d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3d1e5d0 elementor-widget elementor-widget-heading\" data-id=\"3d1e5d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Reference Documents<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86e98d4 elementor-widget-tablet__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"86e98d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Below are some important concepts and testing methods that get from below documents.<\/p><p>GB\/T 43770-2024 which was issued by National Standardization Administration Committee of China<\/p><p>SJ\/T 11281-2017 which was issued by Ministry of Industry and Information Technology of the People&#8217;s Republic of China<\/p><p>T\/COEMA 110S-2021 which was issued by China Optics and Optoelectronics Industry Association<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b5f883c elementor-widget elementor-widget-image\" data-id=\"b5f883c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"522\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/LED-display-testing-standard-1024x522.webp\" class=\"attachment-large size-large wp-image-11516\" alt=\"LED display testing standard\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/LED-display-testing-standard-1024x522.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/LED-display-testing-standard-300x153.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/LED-display-testing-standard-768x392.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/LED-display-testing-standard.webp 1053w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c00bcd6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c00bcd6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-22d3cf7\" data-id=\"22d3cf7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-58058f7 elementor-widget elementor-widget-heading\" data-id=\"58058f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pixel pitch<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-049946f elementor-widget elementor-widget-text-editor\" data-id=\"049946f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pixel is the smallest lighting unit which is composed of Red, Green, and Blue lamp. Pixel pitch means the distance of the adjoining pixels. If the horizontal pixel pitch is the same as the vertical pixel pitch, then we can use Px.xx to stand for the pixel pitch of the LED display. If the horizontal pixel pitch is different from the vertical pixel pitch, then we need to list the pixel pitch separately like Px:3.91mm, Py:7.82mm.<\/p><h3><strong>1:Large pixel pitch displays<\/strong><\/h3><p>Led screen that the pixel pitch is bigger than 8.00mm<\/p><h3><strong>2:middle pixel pitch displays<\/strong><\/h3><p>Led screen that the pixel pitch is among 2.50mm &#8211; 8.00mm<\/p><h3><strong>3:fine pixel pitch displays<\/strong><\/h3><p>Led screen that the pixel pitch is among 1.00mm &#8211; 2.50mm<\/p><h3><strong>4:mini pixel pitch displays<\/strong><\/h3><p>Led screen that the pixel pitch is among 0.30mm &#8211; 1.00mm<\/p><h3><strong>5:Micro pixel pitch displays<\/strong><\/h3><p>Led screen that the pixel pitch is smaller or equate to 0.30mm<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d0693c0 elementor-widget elementor-widget-image\" data-id=\"d0693c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/tepixel.com\/transparent-led-screen-vento\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"518\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Pixel-pitch-1024x518.jpg\" class=\"attachment-large size-large wp-image-11479\" alt=\"\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Pixel-pitch-1024x518.jpg 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Pixel-pitch-300x152.jpg 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Pixel-pitch-768x389.jpg 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Pixel-pitch.jpg 1502w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-3073c28 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3073c28\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-d1398f1\" data-id=\"d1398f1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-76e3314 elementor-widget elementor-widget-heading\" data-id=\"76e3314\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Scan rate and time-multiplexing IC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1f2050 elementor-widget elementor-widget-text-editor\" data-id=\"b1f2050\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the early era of led display, it does not have specific IC for led display, hence for every led lamp it would need a IC to control the power supplier( so that the led lamp can light up in sequence to create a image on the screen) . When the pixel pitch is big, it has enough space to place the IC, but when pixel pitch become smaller, it would need a lot more IC hence it would be hard to place the IC. For example,<\/p><p>For a pixel pitch 10.4mm led display, it would need 1000\/10.4*1000\/10.4*3\/16 = 1728pcs IC.<\/p><p>For a pixel pitch 5.2mm led display, it would need 1000\/5.2*1000\/5.2*3\/16 = 6912pcs IC.<\/p><p>In order to make smaller pixel pitch, time-multiplexing IC is invented. With the time-multiplexing IC, each lead of the IC can power several led lamps separately. For example, if the led display is scan rate 8, then every lead of the IC would power this 8 led lamps in a loop. At first time, the first row led lamp would light up, at second time, the second row led lamp would light up&#8230;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d1b3df elementor-widget elementor-widget-image\" data-id=\"3d1b3df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"316\" height=\"316\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Scan-rate.gif\" class=\"attachment-large size-large wp-image-11475\" alt=\"Scan rate of led display\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cda9178 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cda9178\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4be8426\" data-id=\"4be8426\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-667245c elementor-widget elementor-widget-heading\" data-id=\"667245c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Greyscale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-abb3ad0 elementor-widget elementor-widget-text-editor\" data-id=\"abb3ad0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Greyscale is the ability to show how many grades the led display has from darkness to the brightness. The visual effect of the led display is highly determined by the greyscale ability. If the led display has a low greyscale, it would uneven gradient part during different color areas. Now most of the IC is PMW IC, Greyscale is determined by the GCLK. For more details you can check this article.<\/p><p>The frequency of the display content be showed on the led display in a second, the unit is Hz.<\/p><p>Refresh rate is related to greyscale<\/p><p><strong><span style=\"text-decoration: underline;\"><a href=\"https:\/\/tepixel.com\/led-display-refresh-rate-greyscale\/\">In this article, you can have a deeper understanding of the refresh rate.<\/a><\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b26554 elementor-widget elementor-widget-image\" data-id=\"6b26554\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/tepixel.com\/small-pixel-pitch-led-display-plata-series\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Low-Greyscale-led-display-1024x682.webp\" class=\"attachment-large size-large wp-image-11496\" alt=\"Low Greyscale led display\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Low-Greyscale-led-display-1024x682.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Low-Greyscale-led-display-300x200.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Low-Greyscale-led-display-768x511.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Low-Greyscale-led-display.webp 1316w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-60c66e1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"60c66e1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-79a628a\" data-id=\"79a628a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e4f809f elementor-widget elementor-widget-heading\" data-id=\"e4f809f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Refresh rate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dff9508 elementor-widget elementor-widget-text-editor\" data-id=\"dff9508\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Refresh rate means the frequency of the display content be showed on the led display in a second, the unit is Hz. Normally the higher the refresh rate of the led display, less flickering and more stable visual effect the led display would have. You might be curious why in LCD display, normally the refresh rate is 60hz, and now in LED display, the refresh rate need 1920hz, 3840hz or even 7680hz. You can read more details of this in this article. The greyscale , scan rate, and refresh rate are all determined by the IC.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c2c9fe elementor-widget elementor-widget-video\" data-id=\"0c2c9fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/8kaguAdspyE&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;mute&quot;:&quot;yes&quot;,&quot;loop&quot;:&quot;yes&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-446bccd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"446bccd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-620aae6\" data-id=\"620aae6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2919061 elementor-widget elementor-widget-heading\" data-id=\"2919061\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Brightness<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e03d455 elementor-widget elementor-widget-text-editor\" data-id=\"e03d455\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The measure of light emitted per unit area, unit is nit or cd\/m2. The brightness of the led display usually refer to the white balanced brightness at the vertical(normal) direction (Red light:Green light : Blue light = 3:6:1). We can change the brightness of the led display through different method you can check this article.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-add488c elementor-widget elementor-widget-image\" data-id=\"add488c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"622\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/brightness-of-led-display-1024x622.webp\" class=\"attachment-large size-large wp-image-11501\" alt=\"brightness of led display\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/brightness-of-led-display-1024x622.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/brightness-of-led-display-300x182.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/brightness-of-led-display-768x466.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/brightness-of-led-display.webp 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-75b5f82 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"75b5f82\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-fc207ec\" data-id=\"fc207ec\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5c3851a elementor-widget elementor-widget-heading\" data-id=\"5c3851a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contrast rate<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f729a4a elementor-widget elementor-widget-text-editor\" data-id=\"f729a4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>testing method of Max Contrast Ratio:<\/p><p>Testing condition:<\/p><ol><li>For indoor led display, the Normal direction\u2019s illuminance of screen surface should be 10 x (1+-10%) lx;<\/li><li>For indoor led display, the Normal direction\u2019s illuminance of screen surface should be 5000 x (1+-10%) lx;<\/li><li>Color meter should capture at least 16 pixels during testing<\/li><\/ol><p>Testing procedure:<\/p><ol><li>Measure the MAX brightness of the led display <em><i>L<\/i><\/em><em><sub><i>max<\/i><\/sub><\/em><i><\/i>and the background brightness (led display not light up) <em><i>L<\/i><\/em><em><sub><i>D<\/i><\/sub><\/em><\/li><li>Calculate the Max contrast ratio<\/li><\/ol><p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C = (<em><i>L<\/i><\/em><em><sub><i>max<\/i><\/sub><\/em><em><sub><i>\u00a0<\/i><\/sub><\/em>&#8211; <em><i>L<\/i><\/em><em><sub><i>D <\/i><\/sub><\/em>) \/ <em><i>L<\/i><\/em><em><sub><i>D<\/i><\/sub><\/em>\u00a0<\/p><p>(By doing what the standard required, it need a lab condition, as it is hard to create 10lx environment, but we did it before, and the contract rate would be bigger than 20000:1 )<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8eddb04 elementor-widget elementor-widget-image\" data-id=\"8eddb04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"741\" height=\"309\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Max-contrast-rate-testing-method-of-led-display.webp\" class=\"attachment-large size-large wp-image-11500\" alt=\"\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Max-contrast-rate-testing-method-of-led-display.webp 741w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Max-contrast-rate-testing-method-of-led-display-300x125.webp 300w\" sizes=\"(max-width: 741px) 100vw, 741px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-974f6a0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"974f6a0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-9fb622d\" data-id=\"9fb622d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b85ce96 elementor-widget elementor-widget-heading\" data-id=\"b85ce96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Color gamut coverage ratio<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e68e238 elementor-widget elementor-widget-text-editor\" data-id=\"e68e238\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The ability of what color the led display can show. As all the color of the led display is mixed by Red, green and blue light. Hence the color coordinates of the red, green, and blue determine the color scope the led display can show.<\/p><p>In this article, you can know more details of the <span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/tepixel.com\/color-space-of-the-led-display\/\">Color gamut of the led display<\/a><\/strong><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d7b3d31 elementor-widget elementor-widget-image\" data-id=\"d7b3d31\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/tepixel.com\/color-space-of-the-led-display\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"640\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Color-Space-of-led-display.webp\" class=\"attachment-large size-large wp-image-11444\" alt=\"Color Space of led display\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Color-Space-of-led-display.webp 640w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Color-Space-of-led-display-300x300.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Color-Space-of-led-display-150x150.webp 150w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e02455e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e02455e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-0e222b2\" data-id=\"0e222b2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ea8c780 elementor-widget elementor-widget-heading\" data-id=\"ea8c780\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SMD, GOB, COB<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0bc0ca elementor-widget elementor-widget-text-editor\" data-id=\"b0bc0ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>SMD means Surface mount Device, it is a led lamp package method, we call the led display that using SMD led lamp SMD led display.<\/p><p>GOB means Glue on board, it is a technology that used in SMD led display. As the SMD led lamp\u2019s connecting pad is expose to air, which would be oxidiation, and the led lamp is also easy to be scratched off the board.\u00a0<\/p><p>COB means chip on boards. You can find more details about <span style=\"text-decoration: underline;\"><strong><a href=\"https:\/\/tepixel.com\/common-cathode-flip-cob-led-display\/\">SMD, GOB, and COB in the article<\/a>.<\/strong><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef02216 elementor-widget elementor-widget-image\" data-id=\"ef02216\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/tepixel.com\/small-pixel-pitch-led-display-plata-series\/\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"541\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2023\/03\/gob-module-vs-normal-module2-1024x541.webp\" class=\"attachment-large size-large wp-image-8804\" alt=\"gob module vs normal module2\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2023\/03\/gob-module-vs-normal-module2-1024x541.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2023\/03\/gob-module-vs-normal-module2-300x159.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2023\/03\/gob-module-vs-normal-module2-768x406.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2023\/03\/gob-module-vs-normal-module2.webp 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c191e7a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c191e7a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f78d189\" data-id=\"f78d189\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aed87f3 elementor-widget elementor-widget-heading\" data-id=\"aed87f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Viewing Angle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43b3aa3 elementor-widget elementor-widget-text-editor\" data-id=\"43b3aa3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We change the observation direction of the led display until the observed brightness becomes half of brightness of the vertical direction. And the two horizontal observation direction angle is the horizontal viewing angle. So does the vertical viewing angle.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a566449 elementor-widget elementor-widget-image\" data-id=\"a566449\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"618\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Viewing-angle-testing-method2-1024x618.webp\" class=\"attachment-large size-large wp-image-11511\" alt=\"Viewing angle testing method\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Viewing-angle-testing-method2-1024x618.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Viewing-angle-testing-method2-300x181.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Viewing-angle-testing-method2-768x463.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Viewing-angle-testing-method2.webp 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e62c0a elementor-widget elementor-widget-text-editor\" data-id=\"7e62c0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We Tepixel offer customized turnkey solutions for different led display projects. from TV studio led display, Conference room led display, shopping mall led display to other kind of creative led display. Welcome to contact us for more informations<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p class=\"translation-block\">Now led display has developed from project based product to standardized product, but the related terminology, concept and testing method is not united. Different company has different standard and different testing method.<br>\r\nAs most of the LED display are manufactured in China, in order to standardize the led display. National Standardization Administration Committee of China, Ministry of Industry and Information Technology of the People\u2019s Republic of China, China Optics and Optoelectronics Industry Association and many other organization all released standardization documents to help with the industry. And the concept and testing method of the led display trends to be united.<\/p>","protected":false},"author":1,"featured_media":11512,"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":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","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-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-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-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-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-gradient":""}},"footnotes":""},"categories":[100,101,104],"tags":[],"class_list":["post-11469","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-led-screen-buying-guide","category-led-screen-class"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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