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How Do Touchscreens Work?

We use touchscreen displays for hours every day, but do you know about all the intricate layers and components that make them work? This episode goes into the structure and basic function of a touchscreen display. What goes into making toughened glass strong, how do capacitive touchscreens work, and how do OLEDs work? The merging of these technologies is what arguably makes the smartphone what it is! Take a look and learn more. Do you want to support in-depth engineering and technology education? Join the Branch Education community on our Patreon page found here: https://www.patreon.com/brancheducation We need more engineers throughout the world, and to do that we need better engineering education! Table of Contents: 00:53 The Layers 01:35 Section 1: Toughened Glass 03:18 Section 2: Capacitive Touchscreen 05:07 Section 3: OLED Display 07:18 Section 4: Summary 07:48 Section 8: Outro Key Branches from this video are: Multitouch, Electric Fields, Capacitors, OLEDs, LCDs, Material Transparency, Interface Aesthetics Made by Teddy Tablante Addendum & Erratum LG Prada Predated the Iphone. LG Prada was released announced December 12th 2006 and sales started in May 2007. 5:43 Most smartphones use a pentile subpixel layout which is 2x Green for 1x Red and 1x Blue. 7:25 1Pixel = 1G+1B or 1G + 1R. Thus the latest phones are closer to 6.67Million itty bitty lights. See sub-pixel details here: https://www.oled-info.com/diamond-pix... --- Animation built using Blender 2.79b https://www.blender.org/ Post with Adobe Premiere Pro and Adobe After Effects Sound editing with Reaper Work Cited: Wikipedia contributors. "Touchscreen." , "OLED."  Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, August 30th, 2018 3M Touch Technology Brief. (2013). “Projected Capacitive Technology”  Varshneya, A.K., Bihuniak, P.P. (2017). Cover Screens For Personal Electronic Devices: Strengthened Glaass or Sapphire. American Ceramic Society Bulletin Vol. 96, No. 5 Blankenbach Karlheinz. (2014). "Organic Light Emitting diodes (OLED)." Pforzheim University, Germany. Images of Cellphones acquired from Wikimedia Commons. "HP150" , "Motorola DynaTAC 800x" ,"Appled Newton", "IBM Simon", "Nokia 1610", "Nokia 3310" , "Ipod [1]" , "Blackberry 5810", "Motorola Razr", "IPhone [1]"  Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, August 30th, 2018 Freudenrich, Craig PH.D. (2014)." How OLEDs Work" https://electronics.howstuffworks.com... Music Attribution in Order: Morning Dew from YouTube Audio Library Plaidness from YouTube Audio Library Water Lillies from YouTube Audio Library Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License https://www.youtube.com/watch?v=rBlLC... Sunburst, Tobu & Itro is licensed under Creative Commons Attribution License http://www.7obu.com https://www.youtube.com/watch?v=4lXBH...

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