{"id":11415,"date":"2024-07-22T16:18:08","date_gmt":"2024-07-22T16:18:08","guid":{"rendered":"https:\/\/tepixel.com\/?p=11415"},"modified":"2024-12-13T03:48:03","modified_gmt":"2024-12-13T03:48:03","slug":"led-display-refresh-rate-grayscale","status":"publish","type":"post","link":"https:\/\/tepixel.com\/ko\/led-display-refresh-rate-grayscale\/","title":{"rendered":"LED \ub514\uc2a4\ud50c\ub808\uc774 \uc7ac\uc0dd \ube48\ub3c4 \ubc0f \ud68c\uc0c9\uc870"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11415\" class=\"elementor elementor-11415\" 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;h4&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=\"Apri l&#039;indice dei contenuti\"><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=\"Chiudi l&#039;indice dei contenuti\"><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\">What is Grayscale of LED display?<\/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>Grayscale is the ability to show how many grades the led display has from the darkness to the brightness.<\/p><p>If the led display is able to have 16,484 different shade brightness, then it has 2<sup>14<\/sup> grayscale and we call it 14bit. (2<sup>14<\/sup>=16,484)<\/p><p>If the led display is able to have 65,536 different shade brightness, then it has 2<sup>16<\/sup> grayscale and we call it 16bit.(2<sup>16<\/sup>=65,536)<\/p><p>If the LED display is able to have 30000 different shade brightness, then it means this LED display\u2019s greyscale is bigger than 14bit, but smaller than 15bit.<\/p><p>In the specs of the LED display, we can always see 14-22bit, it means the greyscale range that the led display can achieve.<\/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=\"767\" height=\"371\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/greyscale-ic2.webp\" class=\"attachment-large size-large wp-image-11266\" alt=\"greyscale-ic2\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/greyscale-ic2.webp 767w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/greyscale-ic2-300x145.webp 300w\" sizes=\"(max-width: 767px) 100vw, 767px\" \/>\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\">Why led display need high grayscale?<\/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>For SDR displaying content ( the displaying content that coming from the computer), normally the color depth is 8bit, which means that the greyscale of the displaying content only has 2^8 = 256 different shade. <strong>Theoretically, the led display with 8bit grayscale is enough to present the display content. So why we need high grayscale?<\/strong><\/p><p>The reason is that the different color of the led display is determined by the LED lamp\u2019s brightness (greyscale), and the LED lamp\u2019s brightness is controlled by the PMW (Pulse-width modulation)<img decoding=\"async\" class=\" wp-image-11417 alignright\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/PMW-greyscale-for-led-display-300x212.webp\" alt=\"PMW greyscale for led display\" width=\"255\" height=\"180\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/PMW-greyscale-for-led-display-300x212.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/PMW-greyscale-for-led-display.webp 343w\" sizes=\"(max-width: 255px) 100vw, 255px\" \/><\/p><p>1 width pulse means it has grayscale 1,<\/p><p>2 width pulse means it has greyscale 2.<\/p><p><strong><b>Sensitivity of human eye to Brightness<\/b><\/strong><\/p><p>The sensitivity of human eye to brightness is not liner, it is in relation of exponential. For example, if the brightness of an area is 10nit, if we want our eye to feel the brightness of another area is two times brighter, this place needs to be 100nit.<img decoding=\"async\" class=\"size-medium wp-image-11418 alignright\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Eye-perceived-brightness-300x199.webp\" alt=\"Eye perceived brightness\" width=\"300\" height=\"199\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Eye-perceived-brightness-300x199.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Eye-perceived-brightness.webp 522w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>Hence for the led display, if it is only 8bit grayscale, then the the brightness of the led display is divided into 256 different shades, and the responsive relation is liner. Like the grayscale 1 of the displaying content is mapped to the grayscale 1 of the led display. grayscale 2 of the displaying content is mapped to the grayscale 2 of the led display.<\/p><p>While if the led display\u2019s grayscale is 14bit, which means the grayscale 256 of the displaying content would be in the 2^14= 16384 greyscale. Grayscale 128 of the displaying content would be 5000 grayscale of the led display. And the responsive relation would be more similar to our eye\u2019s responsive relation to brightness. Which can give the led display a better visual effect, such as a smoother gradient during color-changing areas.<\/p><p>Hence normally the higher the grayscale, the better the visual effect it would have.<\/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<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"603\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Different-Greyscale-image-1024x603.webp\" class=\"attachment-large size-large wp-image-11419\" alt=\"Different Greyscale image\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Different-Greyscale-image-1024x603.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Different-Greyscale-image-300x177.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Different-Greyscale-image-768x453.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Different-Greyscale-image.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-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\">What determines the grayscale of the led display<\/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>As we learn from above, the grayscale of the LED display is determined by the PMW. PMW signal is provided by the IC, and all the PMW signal combined in a second we call it GCLK. The GCLK ability is determined by the IC. The relation of the GCLK of Grayscale is as below<\/p><p>GCLK = grayscale * scan rate * frame rate<\/p><p>As the GCLK\u2019s ability is determined by the IC, from the above formula, we would know, that for a particular IC, if you want to increase the greyscale, you can decrease the scan rate of the led display in design. Or you can use a good 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-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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"599\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/14bit-and-16bit-greyscale-IC-1024x599.webp\" class=\"attachment-large size-large wp-image-11420\" alt=\"14bit and 16bit greyscale IC\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/14bit-and-16bit-greyscale-IC-1024x599.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/14bit-and-16bit-greyscale-IC-300x175.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/14bit-and-16bit-greyscale-IC-768x449.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/14bit-and-16bit-greyscale-IC.webp 1165w\" 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-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\">What\u2019s Refresh rate of led display<\/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>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.<\/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<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Greyscale-of-the-led-display-1024x481.webp\" class=\"attachment-large size-large wp-image-11437\" alt=\"\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Greyscale-of-the-led-display-1024x481.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Greyscale-of-the-led-display-300x141.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Greyscale-of-the-led-display-768x360.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/Greyscale-of-the-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-39868d0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"39868d0\" 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-7628a50\" data-id=\"7628a50\" 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-281bf6c elementor-widget elementor-widget-heading\" data-id=\"281bf6c\" 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\">Why does led display need high 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-4371863 elementor-widget elementor-widget-text-editor\" data-id=\"4371863\" 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>When it comes to led display\u2019s refresh rate specs, normally we would find 1920hz, 3840hz, or 7680hz, but when we try to buy LCD display, normally the refresh rate is 60hz and 120hz. So why does led display need such a high refresh rate?<\/p><p>The reason is that in the LCD display, the back light is always on, it only change the R,G,B gate to control the passing light to our eyes, the light is consistent.<\/p><p>while for led display the greyscale of the led display is achieved by PMW, which means that the led lamp would turn on and off constantly.<\/p><p>For example ( led display\u2019s frame rate is 60hz, greyscale is 13bit)<\/p><p>If the led display\u2019s refresh rate is 60Hz, . It then means each frame\u2019s duration is 1000\/60=16.67ms. In this one frame the led lamp only turn on and off 1 time. To reach 13bit greyscale, it means that it would have 2^13= 8192 different grade shade. For greyscale 1, and greyscale 2000, the PMW would be as below:<\/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-57b0627 elementor-widget elementor-widget-image\" data-id=\"57b0627\" 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=\"483\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/why-need-high-refresh-rate-1024x483.webp\" class=\"attachment-large size-large wp-image-11424\" alt=\"\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/why-need-high-refresh-rate-1024x483.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/why-need-high-refresh-rate-300x141.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/why-need-high-refresh-rate-768x362.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/why-need-high-refresh-rate.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<div class=\"elementor-element elementor-element-d1d2749 elementor-widget elementor-widget-text-editor\" data-id=\"d1d2749\" 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>And as you see, when there is only 1 time turn on and of for the led lamp, the duration of the led lamp turn on is not evenly distributed among the whole 1 frame duration. And when the turn on time is too focus, the brightness of the led lamp during the 1 frame is also not even. To make the PMW (Greyscale) evenly distributed during the whole frame. We can make the a certain qty of greyscale one session, then PMW evenly divided into those session, and led lamp would turn on and off once among one session. We would know the refresh rate = the session qty * frame rate.<\/p><p>The greyscale quantities in a session is determined by the IC, and we know that the Greyscale = session qty * greyscale quantities in a session. From above we would know that, The higher the refresh rate, it means the PMW is more evenly distributed in the GCLK, which would mean more stable image quality.<\/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-850b075 elementor-widget elementor-widget-image\" data-id=\"850b075\" 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=\"768\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/High-refresh-rate-led-display-1024x768.webp\" class=\"attachment-large size-large wp-image-11438\" alt=\"\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/High-refresh-rate-led-display-1024x768.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/High-refresh-rate-led-display-300x225.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/High-refresh-rate-led-display-768x576.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/High-refresh-rate-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-7bb0f15 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7bb0f15\" 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-d01bfb7\" data-id=\"d01bfb7\" 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-a7d7f01 elementor-widget elementor-widget-heading\" data-id=\"a7d7f01\" 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\">Low brightness high greyscale<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1bea64d elementor-widget elementor-widget-text-editor\" data-id=\"1bea64d\" 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>As we know from above, in low greyscale, the refresh rate is not high. To be able to have a good visual effect under low greyscale, then the IC\u2019s output current need to be accurate, as little accuracy or flickering of the current, would result the led display\u2019s color uniformity under low greyscale not consistent.<\/p><p>While if you want to achieve low brightness of the led display, we would need the IC to have a lower current output. For example, the IC\u2019s output current is from 4-25mA, normally the IC is working under the current of 15mA, and it is normal to have a 5% current difference between different IC. Hence the output current would be around 14.25-15.75mA, for example, the brightness of the led lamp would be 900-1000nit. While if we want to make a low brightness say 300nit, the current would be around 5mA, and the output current would be around 4.75-5.25mA, while the brightness would be from 280-320nit. As our eye is more sensitive to low brightness, hence the difference of 40nit in low brightness is very easy to detect.\u00a0<\/p><p>Hence in order to achieve low brightness high greyscale, we need to use high end IC, and the design of the PCB is also different, as we need to make sure the output current from the IC is very precise and accurate.<\/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-b0ad67b elementor-widget elementor-widget-image\" data-id=\"b0ad67b\" 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=\"536\" src=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/low-brightness-high-greyscale-led-display-1024x536.webp\" class=\"attachment-large size-large wp-image-11439\" alt=\"low brightness high greyscale led display\" srcset=\"https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/low-brightness-high-greyscale-led-display-1024x536.webp 1024w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/low-brightness-high-greyscale-led-display-300x157.webp 300w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/low-brightness-high-greyscale-led-display-768x402.webp 768w, https:\/\/tepixel.com\/wp-content\/uploads\/2024\/07\/low-brightness-high-greyscale-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<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>\ubc1d\uae30\uc5d0 \ub300\ud55c \uc778\uac04\uc758 \ub208\uc758 \ubbfc\uac10\ub3c4\ub294 \ub77c\uc774\ub108\uac00 \uc544\ub2c8\uba70 \uc9c0\uc218\uc640 \uad00\ub828\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc601\uc5ed\uc758 \ubc1d\uae30\uac00 10nit\uc774\ub77c\uba74, \uc6b0\ub9ac\uc758 \ub208\uc774 \ub2e4\ub978 \uc601\uc5ed\uc758 \ubc1d\uae30\ub97c \ub290\ub07c\uae30\ub97c \uc6d0\ud55c\ub2e4\uba74 \uc774\uacf3\uc740 100nit\uc774\uc5b4\uc57c\ud569\ub2c8\ub2e4.<\/p>","protected":false},"author":1,"featured_media":11262,"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 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[100,104],"tags":[],"class_list":["post-11415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-led-screen-class"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LED Display Refresh Rate And Grayscale - Tepixel<\/title>\n<meta name=\"description\" content=\"Grayscale and Refresh rate are two important specs in led display that determine the visual effects of the led display\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tepixel.com\/ko\/led-display-refresh-rate-grayscale\/\" \/>\n<meta property=\"og:locale\" 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