With the advancement in science and technology, we might have come a long way. Ever wondered from a normal telephone to a mobile phone, a lot have changed for the better. The thing that made amazement is now common. The first time we used a touch screen made us feel awe and take care but now even the small kids in our house know to use the touch screen phone and can lock, unlock, swipe and even play their favorite video games on the mobile phone. There was a time when a consumer would use his mobile phone for years but now, the study shows that the majority of the customer changes his/her mobile in a year or two.
What are touchscreens and their use?
- Touchscreens are a 2-dimensional sensing device like the keyboard or mouse stationed over liquid crystal panels or direct manipulation type gesture-based technology made of 2 sheets of material separated by spacers that allow the user to provide their input with a touch of their finger or hand and get its result on the same display.
- Touchscreens have become very common and are used in many technologies like smartphones, computers or laptops, TVs at home, car navigation systems, ATMs and kiosks in banks, supermarkets, customer service stores, games or teaching console, etc. They have become very common and used widely by many in their daily lives.
Types of Touchscreen display used in mobile phones: There are many types of touch screen but the most commonly used in mobile phones are resistive and capacitive type display.
i) Resistive type touchscreen display - These are made up of several layers of thin metal film separated by a tiny air gap i.e the upper layer is made up of flexible conducting polyester plastic bonded to the lower layer of rigid conducting glass separated by an insulating membrane. The two layers contain an electric current flowing through them and when pressure is applied to the surface, the top flexible layer and the rigid bottom layer together touch making the circuit complete. It detects this contact accurately and provides the output. They are more affordable, cost-efficient and use simple algorithms. The disadvantage of these screens is that they lack screen clarity as it transmits only 75% of the light from the monitor and input precision and can be damaged by sharp objects.
ii) Capacitive type touchscreen display - These are made from multiple transparent conductive electrode layers of glass that store electrical charges and separated by an insulator. When we touch the screen using a finger or stylus, the movement of electric charges occurs that detects the point touched by the controller present in the system. This screen type provides great image clarity as it transmits nearly 90% of the light from the monitor, extreme resistance to dust, grease and water, react only to touch of the finger, etc.
“The most important thing in life is to learn how to give out love, and to let it come in." — Morrie Schwartz