{"id":1140,"date":"2010-06-09T02:27:43","date_gmt":"2010-06-09T08:27:43","guid":{"rendered":"http:\/\/www.seeedstudio.com\/blog\/?p=1140"},"modified":"2010-06-09T03:02:14","modified_gmt":"2010-06-09T09:02:14","slug":"if-a-purple-lcd-is-all-you-want-dont-comment-in-this-blog","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2010\/06\/09\/if-a-purple-lcd-is-all-you-want-dont-comment-in-this-blog\/","title":{"rendered":"If a purple LCD is all you want, don&#8217;t comment in this blog."},"content":{"rendered":"<p><a href=\"\/wp-content\/uploads\/2010\/06\/\u672a\u547d\u540d-2.png\"><img fetchpriority=\"high\" decoding=\"async\" title=\"\u672a\u547d\u540d-2\" src=\"\/wp-content\/uploads\/2010\/06\/\u672a\u547d\u540d-2.png\" alt=\"\" width=\"600\" height=\"399\" \/><\/a><\/p>\n<p><a href=\"\/wp-content\/uploads\/2010\/06\/\u672a\u547d\u540d-2.png\"><\/a>We had <a href=\"http:\/\/www.seeedstudio.com\/blog\/2010\/05\/18\/ipod-no-its-music-shield\/#comments \">posted earlier about the music shield<\/a>, people were interested in the LCD underneath&#8230; The bad news #1 is that we can&#8217;t source the very same one, the bad news #2 is that the LCD has this color just for shooting from side so it is not real; but we have a good news:<\/p>\n<p><strong>Let&#8217;s make one LCD:<\/strong><\/p>\n<ul>\n<li>that have chromatic programmable color,<\/li>\n<li>that have customized display pattern for and only for the open source world,<\/li>\n<li>that have the size we \u00a0are comfortable with,<\/li>\n<li>that have the character\/symbol\/logo we love,<\/li>\n<li>that can tolerate hacking and ideas,<\/li>\n<li>&#8230; to be added<\/li>\n<\/ul>\n<p>The basic principle of a LCD is here<\/p>\n<p><a href=\"http:\/\/en.wikipedia.org\/wiki\/Liquid_crystal_display\">http:\/\/en.wikipedia.org\/wiki\/Liquid_crystal_display<\/a><\/p>\n<div><img decoding=\"async\" class=\"alignnone\" title=\"LCD \" src=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/d\/dc\/LCD_layers.svg\/250px-LCD_layers.svg.png\" alt=\"\" width=\"250\" height=\"188\" \/><\/div>\n<p>Reflective twisted nematic\u00a0<a title=\"Liquid crystal\" href=\"http:\/\/en.wikipedia.org\/wiki\/Liquid_crystal\">liquid crystal<\/a> display.<\/p>\n<ol>\n<li><a title=\"Polarizer\" href=\"http:\/\/en.wikipedia.org\/wiki\/Polarizer\">Polarizing filter<\/a> film with a vertical axis to polarize light as it enters.<\/li>\n<li>Glass substrate with\u00a0<a title=\"Indium tin oxide\" href=\"http:\/\/en.wikipedia.org\/wiki\/Indium_tin_oxide\">ITO<\/a> <a title=\"Electrode\" href=\"http:\/\/en.wikipedia.org\/wiki\/Electrode\">electrodes<\/a>. The shapes of these electrodes will determine the shapes that will appear when the LCD is turned ON. Vertical ridges etched on the surface are smooth.<\/li>\n<li>Twisted nematic liquid crystal.<\/li>\n<li>Glass substrate with common electrode film (ITO) with horizontal ridges to line up with the horizontal filter.<\/li>\n<li>Polarizing filter film with a horizontal axis to block\/pass light.<\/li>\n<li>Reflective surface to send light back to viewer. (In a backlit LCD, this layer is replaced with a light source.)<\/li>\n<\/ol>\n<p>1-5 is what we have talked with a LCD factory for customization, and 6 is we are going to play with. \u00a0Please leave us your ideas to the <a href=\"http:\/\/www.seeedstudio.com\/forum\/viewtopic.php?f=10&amp;t=767&amp;start=0\">forum thead<\/a>, and get some prototype if adopted. ^___^<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We had posted earlier about the music shield, people were interested in the LCD underneath&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"iawp_total_views":0,"footnotes":""},"categories":[1],"tags":[101,18],"class_list":["post-1140","post","type-post","status-publish","format-standard","hentry","category-news","tag-lcd","tag-open-source"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - 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