Different Types of Touch Screen Technologies
A touchscreen is an electronic visual display that the user can control through simple or multi-touch gestures by touching the screen with one or more fingers. Acnodes integrated this new touch screen technology into our embedded computer and industrial monitor product line. There are a variety of touch screen technologies that have different methods of sensing touch:
 |
• Surface Capacitive Touch Screens - Surface Capacitive touch screens have a protective barrier to defend the screen from scratches and weakening. Even with the problems of spills, dents and abrasions, it sustains its maximum capabilities and maintains its functionality by remaining unaffected by demanding external environments. |
 |
• Secure Touch Surface Wave Touch screens - Secure Touch Surface Wave touch screens use exceptionally reliable and dependable glass for imitable picture and resolution quality. Made with all glass, this scratch resistant technology is suitable for environments with harsh conditions. |
 |
• AccuTouch Five-Wire Resistive Touch screens - AccuTouch technology qualifies as the most contaminant-resistant touch screen due to its ability to withstand and protect itself against moisture. Even under the toughest conditions such as including liquid spills, sprays,sprinkles, and splashes, this touch screen maintains its durability. |
 |
• CarrollTouch Infrared Touch screens - CarrollTouch Infrared touchscreen uses a choice of glass or acrylic overlay for protection, making it the optimal option for environments with critical surroundings. Because this is the only technology that does not depend on a substrate, the touchscreen works flawlessly even when used with a gloved hand. |
 |
• IntelliTouch Surface Wave Touch screens - Put together with pure glass, the IntelliTouch surface wave is state-of-the-art touchscreen technology making it the most scratch-resistant obtainable equipment out there. With its durable glass surface, it provides the utmost quality for image clarity, resolution, and light transmission. |
Surface Capacitive Touch Screens
What is it and how does it work?
Capacitive touch screens depend on our electric impulses for it to work. Depending on when and where touched, the human body sends signals to screen. Capacitive touch screens cannot function if used with a stylus or a gloved hand, because of its reliance on the light touch of a finger.
Surface Capacitive touch screens have a protective barrier to defend the screen from scratches and weakening. Even with the problems of spills, dents and abrasions, it sustains its maximum capabilities and maintains its functionality by remaining unaffected by demanding external environments.
Although this type of screen cannot function when using with a gloved hand, special-application gloves with an embroidered patch of conductive threads are now available for more functionality. Most hand-held technologies use a capacitive touch screen because of its thin and more accurate sensor.
Secure Touch Surface Wave Touch Screens
What is it and how does it work?
The Secure Touch Surface Wave touch screen is made out of pure glass and has a scratch resistant surface that can tolerate extreme physical wear and tear damage over time. This type of touch screen is used primarily in ATMs, amusement parks, kiosks, and banking applications.
This screen has what’s called “X & Y axes” to convey and pick up piezoelectric transducers. This transducer device receives five-megahertz electrical signals which are modified into ultrasonic waves amidst the glass. When the screen is touched, a coordinate is calculated depending on how much of the signal is absorbed.
AccuTouch Five-Wire Resistive Touch Screens
What is it and how does it work?
The Accutouch Five-Wire Resistive touchscreen is composed of a glass panel with resistive overlay plus a coversheet with a conductive layer. This technology is essential due to its proficiency in stability and long product life. These are primarily used on voting machines, office retail mechanization and medical industrialization.
This type of screen is made from three different sheets: conductive, resistive, & a protective layer which is why it is so durable. Resistive touch screens are very common because it is affordable and generally has a longer life. The most important layers include two electrically resistive layers, which form a gap between each other. The part we touch, the outermost part of the screen, is called the protection layer which protects the screen from scratches, water spills, and other types of damage.
CarrollTouch Infrared Touch Screens
What is it and how does it work?
The CorrollTouch is ideal for brutal industrial applications and used predominantly in the hospital setting. Because of its vandal resistance capabilities, it is physically impossible to weaken the touch screen, making it the top notch touch screen technology thus far.
The touch screen technology allows the display to become viewable under the brightest luminance, including direct sunlight. This high tech technology uses photoreceptors and LEDs to create IR light beams touched and is able to perform flawlessly even under extreme temperatures from Operating: -20ºC to 70ºC to Storage: -40ºC to 85ºC.
IntelliTouch Surface Wave Touch Screens 
What is it and how does it work?
The IntelliTouch Surface Wave touchscreen technology has a sensitive touch response that determines the location and amount of pressure applied and can be used with a gloved hand, stylus, or even a fingernail. It has a scratch resistant surface, making it durable enough to withstand vandal environments while maintaining its functionality.
This screen has what’s called “X & Y axes” to convey and pick up piezoelectric transducers. This transducer device receives five-megahertz electrical signals which are modified into ultrasonic waves amidst the glass. When the screen is touched, a coordinate is calculated depending on how much of the signal is absorbed.
Source: Pictures from elotouch
