We use different types of touch screen which is very common in our daily life including mobile phones, laptops, ATM machines, ticket vending machines etc.
We can interact with our PC or mobile via touch screen and it works both as input and output devices.
It has reduced the use of mouse and keyboards with our daily used personal computers.
There are several types of touch screen technology we use today. Among all of them 6 main types of touch screens is given bellow.
1. Resistive touch screen
Resistive touch is the most popular and most used touch screen technology. This is also a lowest cost touch screen technology we use today. It needs low power to run.
This touch screen is consisting of a glass panel and a film. These glass panel and film is covered with a thin metallic layer. They are also separated by a narrow gap.
If we touch the screen then the two-layer come contact with each other. It makes the flow of electrons. Thus, a resistive touch screen works.
2. Surface capacitive touch screen
Surface capacitive touch screen has the popularity just after resistive touch screen technology.
Here, a transparent electrode layer is placed over a glass which is protected by a cover.
When we touch the screen, it reacts with the static electrons of our body.
Then some electrons come to our body from the screen which creates a decrease of electron on that place of the screen.
This reduction of electron is detected by a sensor.
These types of touch screen give more clear images than resistive touch screen but it requires direct or indirect contact with our body to work.
3. Projected capacitive touch screen
Projected capacitive touch screen gives very high-quality image clarity. It is similar to surface capacity touch screen.
These types of touch screens can be activated by surgical gloves also. It consists of a sheet of glass which embedded transparent electrode films and an IC chip.
4. SAW touch screen
SAW stands for Surface Acoustic Wave which based upon two transducers and a reflector placed on the glass surface.
Transducer receives the bouncing wave and absorbed, for which the touch is detected.
SAW give high touch life and better scratch resistance than capacitive one. These types of touch screens have also excellent image clarity.
5. Infrared touch screen
Infrared touch screen technology does not overlay the display with additional screen rather they use IR emitters and receivers.
It has unlimited touch life and highest image clarity and light transmissions.
It gives us the best image quality but it is sensitive to water or other liquids. In infrared touch screen we can set up a grid of infrared beams across the panel.
6. Optical imaging touch screen
Optical imaging touch screen is designed to detect touch through infrared cameras and disruption of light strips.
This is the most versatile options to touch screen technology.
They use optical sensors to detect the touch. Here two infrared imaging sensors are positioned at the top.
Future of touch screen technology
It is no secret that touch screen technology is on the rise and is set to become a more predominant way of interacting with technology in the future.
Some of the reasons for this include the increasing popularity of smartphones and tablets, the increasing availability of multi-touch screens, and the increasing popularity of virtual reality.
There are many different ways that touch screen technology can be used in the future. One example is the use of touch screen technology in automobiles.
Cars now have touch screens that allow drivers to control various functions of the car, such as the music and the climate.
This is a particularly useful feature in cold weather conditions, when drivers can control the heating without having to get out of the car.
There is also the potential for touch screen technology to be used in medical settings. For example, hospitals could use touch screen technology for different purpose.
Touch screen and health risks
Touch screens can be a great way to keep your hands busy and your mind active.
But like any new technology, there are some potential health risks associated with using touch screens.
One potential health risk is that touch screens can lead to RSI (repetitive strain injury) in your hands.
This is caused by repetitive use of your hands and can often lead to pain and inflammation.
Another potential health risk is that touch screens can lead to carpal tunnel syndrome.
Carpal tunnel syndrome is a condition in the wrist that can cause pain, numbness, and difficulty moving your fingers.
So, if you are considering using a touch screen, be sure to keep your hands active and avoid overly repetitive motions.
And if you do experience any pain or inflammation in your hands, be sure to see a doctor.
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