Capacitive Touch-Screens By: Mason Schoonover MEEN 3344.

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Presentation transcript:

Capacitive Touch-Screens By: Mason Schoonover MEEN 3344

How it’s Made A capacitive touch screen is an all glass touch screen with a transparent metallic conductive coating. The LCD display is found beneath the glass and conductive layers.

How it Works There is a low voltage charge that is generated from the corners of the screen and distributed throughout the conductive layer. When a finger touches the screen it draws a minute amount of current, creating a drop in voltage. The device then pin points the location of the touch by the proportion of where the finger creates the drop in voltage on the screen.

Advantages and Disadvantages Advantages High touch resolution High image clarity Not affected by dirt, grease, or moisture. Disadvantages Will only work when touched by a conductive input. Some capacitive touch screens can have erratic behavior when touched by more than one input.

Interesting Facts A 15” capacitive touch screen costs about $2500. It takes less than 3 ounces of force to activate the touch screen. It is rated for 100,000,000 plus touches at each specific point on the screen. Capacitive touch screens have been developed into multiple touch systems.

Uses ATMs Public Access Kiosks Phones Computers Gaming machines Point of Sale Industrial controls Hand held electronics

References " IN CHASTOUCH FPD METAL NFI CAP SER TCH MON." Hard Drives Outlet - Storge Solutions. 30 Apr "Capacitive Touchscreens." TouchScreens.com: PC & DVD Touch-Screens, Touch Monitors, Information Kiosks, Touchscreen Add-ons. 30 Apr "Capacitive Touch Screens." Touch Screen Technology Made Affordable by EZscreen. 30 Apr "Projected Capacitive Touch Screen (PCT)." Touch Screen India | Touch Monitors Mumbai | Kiosk & POS Components & Peripherals India. - AMS Impex, Mumbai, India. 30 Apr "HowStuffWorks "Multi-touch Systems"" Howstuffworks "Electronics Channel" 30 Apr "HowStuffWorks "iPhone Touch Screen"" Howstuffworks "Electronics Channel" 30 Apr "New Vandal-resistant Touch Screens from 3M Target Self-service and ATM Applications - Retail Technology Review.com." The Retail Technology Review - Retail supply chain and in store technology news. 01 May "Transportation | Pump Media debuts pumptop digital screens from 3M | Digital Signage Today." Dynamic Digital Signage News and Information | Digital Signage Today. 01 May Public DataWeb." Public DataWeb Kiosks. 01 May 2009.

References continued "ALDELO FOR RESTAURANTS POINT OF SALE PROFESSIONAL RESTAURANT POS SOFTWARE FOR FINE DINING RESTAURANT, QUICK SERVICE, PIZZA DELIVERY, CARRY-OUT RESTAURANT AND QSR POS." ASSURED COMPUTING TECHNOLOGIES POINT OF SALE SYSTEMS, Retail Point of Sale, Restaurant Point of Sale, VIDEO SURVEILLANCE, REMOTE DATA STORAGE AND BACK-UP, POS SYSTEMS, NH, CT, RI, ME, MA, VT, NY, NEW ENGLAND and More! 01 May "Part 2." Tablet PC Blog - The Australian Resource for Tablet PC, UMPC and Mobile Computing Information. 01 May D and S Control Systems Home Page. 01 May 2009.