{"id":14557,"date":"2013-04-08T00:15:43","date_gmt":"2013-04-08T04:15:43","guid":{"rendered":"http:\/\/www.tedpublications.com\/fr\/?p=14557"},"modified":"2013-04-08T00:15:43","modified_gmt":"2013-04-08T04:15:43","slug":"sonys-triluminos-what-is-it","status":"publish","type":"post","link":"https:\/\/www.tedpublications.com\/fr\/sonys-triluminos-what-is-it\/","title":{"rendered":"Sony\u2019s TRILUMINOS \u2026 what is it?"},"content":{"rendered":"

Mr. <\/em>David Susilo<\/i><\/strong>, PhD: <\/em>ISF<\/i><\/strong>, <\/em>Control4<\/i><\/strong>, <\/em>CEDIA,<\/i><\/strong>
\nTHX Certified Professional and<\/strong> HAA<\/strong><\/i><\/b> Member<\/em>.<\/em><\/i><\/b><\/p>\n

At CES<\/strong> in January, Sony<\/strong> re-introduced Triluminos backlighting<\/em> system that used to be employed in their XBR8<\/em> TVs in 2008.\u00a0 However, this new backlighting method that they promise\u00a0is no longer the multiple-colour LED<\/em> to create the backlighting but\u00a0utilizes an optical component produced by QD Vision, Inc.<\/a><\/strong> called \u201cColor IQ<\/em>\u201d which uses quantum dots to help create light.<\/p>\n

OK, so what are quantum dots<\/em>?<\/strong><\/p>\n

Quantum dots<\/em> are a \u201csemiconductor nano-crystal technology\u201d where\u00a0tiny pieces of matter with unique properties, including the ability to emit light at very specific wavelengths. Sort of like microscopic pieces of glitter that glow green, red, or blue depending on their size.<\/p>\n

\"qd_rgb_spectra\"<\/a>Red, green, and blue spectrums for blue, green, and red quantum dots.(Credit: QD Vision<\/strong>)<\/em><\/p>\n

All LCDs<\/em> create these colors with filters. Plasma<\/em> displays create them with phosphors that glow in the required color (similar to the way CRT<\/em> tube TVs worked). OLED<\/em>, depending on the company, is one or the other.\u00a0 LG<\/strong>\u2019s method creates a \u201cwhite\u201d OLED<\/em> then adds color filters (this is what I consider as \u201cfake\u201d OLED<\/em> TV because essentially this TV will just be another LCD<\/em> TV that uses WOLED<\/em> backlighting instead of LED<\/em> or CCFL<\/em>). Samsung<\/strong>\u2019s, Sony<\/strong>\u2019s and Panasonic<\/strong>\u2019s\u00a0method has specific red, green, and blue OLED<\/em> sub-pixels.<\/p>\n

So where do quantum dots<\/em> come in? Sony<\/strong> has a method.<\/p>\n

Sony\u2019s X900 and W900 lines<\/b><\/em>
\nThree of Sony<\/strong>\u2019s 2013 TVs will use quantum dots<\/em> in their backlighting, in the guise of QD Vision<\/strong>\u2019s Color IQ<\/em> tech (the 65X900, 55X900<\/a><\/strong>, and 55W900<\/a><\/strong>). A traditional LED LCD<\/em> uses blue LED<\/em>s, coated with a yellow phosphor, to create \u201cwhite\u201d light. While reasonably efficient compared to other technologies (i.e. CCFL<\/em> LCD<\/em>s and plasmas<\/em>), this still creates a lot of \u201cwasted\u201d energy.\u00a0 Orange, for example, doesn\u2019t make it past the color filters on the front of the TV (instead, red and green are combined to create orange).<\/p>\n

Triluminos<\/em> uses blue LED<\/em>s, but instead of coating them with a yellow phosphor, the blue light from the LED<\/em>s passes through the Color IQ<\/em> optical element containing red and green quantum dots<\/em>. So the blue LED<\/em>s have two functions: create blue light, but also energize red- and green-emitting quantum dots<\/em> so they in turn can create red and green light. About two-thirds of the light created by the blue LED<\/em>s is used to excite the QD<\/em>s.<\/p>\n

\"white_led_vs_blue_with_qd_vertical_crop\"<\/a>This diagram is a top-down view of one side of <\/em>two edge-lit LCDs (the front is \u201cup\u201d in this case,
\nthe back is \u201cdown\u201d). The upper image shows a traditional \u201cwhite\u201d <\/em>LED (blue, with yellow phosphor).
\nThe lower image is the method used in Sony<\/strong>\u2019s <\/em>Triluminos: a blue <\/em>LED that passes through
\nred and green <\/em>quantum dots. This <\/em>RGB light bounces off the light guide, and out through the liquid
\ncrystal and other layers just like a regular <\/em>LCD TV.(Credit: QD Vision<\/strong>)<\/em><\/p>\n

How dots can help TV colour<\/b> rendition<\/b><\/em>
\nSony<\/strong> claims its new backlight technology allows for a wider color gamut compared to LCD<\/em> TVs using \u201cwhite\u201d LED<\/em>s, as in more potential colors. \u00a0Since all modern TVs are fully capable of reproducing every colour in all current HDTV content<\/a><\/strong>, this is a bit of marketing hyperbole.<\/p>\n

However, the benefits of this could go beyond cool, futuristic tech and marketing. When I\u2019ve reviewed LED<\/em>-lit projectors, I\u2019ve found that the color possible from RGB LED<\/em>s looks more realistic than the same SMPTE\/THX\/ISF\/Rec. 709<\/em>-calibrated colours created by colour filters (DLP<\/em>) or dichromatic mirrors (LCD<\/em>\/LCOS<\/em>) as lit by UHP<\/em> lamps. One TV engineer I asked about this phenomenon replied \u201cLED<\/em>s are like painting with purer paint.\u201d<\/p>\n

I often remarks in\u00a0my\u00a0observations on the bluish cast seen on most (if not all) conventional LED<\/em>-based TVs compared to plasma sets. \u00a0It\u2019s usually most prevalent in dark areas, but often times I still see a slight bluish \u2018coldness\u2019 in brighter material and skin tones too.\u00a0 In some cases I still see it despite the seemingly excellent color measurements from my calibration instruments.<\/p>\n

So it\u2019s possible that even with the same measured color points, quantum dot-enhanced displays could produce more realistic color. \u00a0Will they? \u00a0Will the color mixing required to create Rec. 709<\/a><\/strong> from wildly oversaturated color points cause other issues? \u00a0What effect will the color filters, which are still necessary on LCD<\/em>s, have on this \u201cpurer\u201d light? \u00a0These are questions I can\u2019t answer until I review the X900<\/em> series and any future TVs with quantum dots.<\/p>\n

The current generation of quantum dot technology requires a primary light source like the blue LED<\/em>s in Sony<\/strong>\u2019s Triluminos<\/em>.\u00a0 This won\u2019t always necessarily be the case.\u00a0 It will be possible to excite the quantum dots<\/em> directly.\u00a0 This could be a full QD<\/em> backlight, but it could be more. \u00a0How about a direct-emissive display like OLED<\/em> but instead of using O<\/strong>rganic L<\/strong>ight-E<\/strong>mitting D<\/strong>iodes<\/em>, its sub-pixels filled with red, green, or blue quantum dots. \u00a0QD Vision<\/strong> calls this a \u201cQLED<\/em>,\u201d and it could have similar performance characteristics as OLED<\/em> (such as truly infinite contrast ratio IF<\/em> they are used in a full-backlight fashion and not only the edge-lit like today). \u00a0Will it be easier to produce, offer better color, or have even lower power consumption? At this point,\u00a0I have no idea.\u00a0 One thing for sure, however, unlike the premature death of blue pixels in OLED<\/em> displays, Quantum Dots<\/em> will NOT have that problem.<\/p>\n

http:\/\/www.qdvision.com\/<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Mr. David Susilo, PhD: ISF, Control4, CEDIA, THX Certified Professional and HAA Member. At CES in January, Sony re-introduced Triluminos backlighting system that used to be employed in their XBR8 TVs in 2008.\u00a0 However, this new backlighting method that they promise\u00a0is no longer the multiple-colour LED to create the backlighting but\u00a0utilizes an optical component produced […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60,39,58],"tags":[43,1006,50,1007,673,1008,52,809],"class_list":["post-14557","post","type-post","status-publish","format-standard","hentry","category-cinema-maison","category-actualite","category-ted","tag-ces","tag-color-iq","tag-lcd","tag-led-lcd","tag-oled","tag-quantum-dots","tag-sony","tag-triluminos","entry"],"_links":{"self":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts\/14557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/comments?post=14557"}],"version-history":[{"count":0,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/posts\/14557\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/media?parent=14557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/categories?post=14557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tedpublications.com\/fr\/wp-json\/wp\/v2\/tags?post=14557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}