Welcome to Device Tech Bytes 4th Vol! In the previous Tech Byte topic, we have learned about All about In-display fingerprint scanner By Nazeer. Today we are going to learn about Screen Protectors, we know that our smartphone display was never safe even for the fatal fall as we always want to protect them from any unknow object hittings or scratches, but have you guys never thought about where these screen protectors came from? and who designed it at first. so let's break the glass to know abore about it.
In simple words, a Screen Protector is a thin film of plastic that can be used to protect the outer glass of any touch-enabled device. If you’re one of those nerds who wants to know the definition, here’s it from Wikipedia.
A Screen Protector is an additional sheet of material that commonly is a polyurethane that can be attached to the screen of an electronic device and protect it against physical damage.
If we jump back to the past, the first screen protector was designed and patented by Herbert Schlegel in 1968 for use on Television screens. After that, as we moved into the era of Smartphones there were Personal Digital Input Assistants which allowed us to input onto the screen. It was called Stylus. Often it used to happen that the tip of the stylus could scratch the sensitive screen surface which could lead to damage. Since then, this leads to the idea of screen protectors which are widely used even today.
Types of Screen Protectors
The types of Screen Protectors are mainly divided on the basis of the material used which are as follows:
2)TPU (Thermoplastic Polyurethane)
PET stands for Polyethylene Terephthalate. They consist of polyester film with a scratch-resistant matte coating on one side and a silicone adhesive on the other. On the Mohs level of hardness, they fall on 2 or 3 with the decent ones. They are very cheap.
TPU stands for Thermoplastic Polyurethane. This is a chemically enhanced plastic whose properties include RESISTANCE to scratches, elasticity, oil and grease and more toughness. This material has limited self-healing abilities which give it an edge to absorb light non-extreme impacts and light scratches. It usually falls on the same level of hardness on the Mohs Scale like PET. But these TPU Screen guards are very rare to find.
Tempered GlassTempered Glass is also referred to as TG. A decent Tempered Glass is usually multi-layered, usually, silicon at the bottom, followed by PET Film. An adhesive between them and the glass with oleophobic coating. They are usually greater than 0.45mm or even thicker. They aren’t cheap, unlike PET, TPU. 8-9H Tempered Glass re good to go. But they are lifesavers especially if you boast a flagship. At the time of fatal fall, they take the whole damage and break/shatter into tiny pieces thereby saving your phone’s display as well as your pocket.
Not only on the basis of material but even on the various finishes available, the screen protectors are classified such as Matte Screen Protector or a Glossy Screen Protector. Don’t worry by the end you would know which Screen Protector should you opt for.
Choose Tempered Glass if you
Choose Plastic Screen Protectors if
Choose Matte Screen Protector if you
Choose Glossy Screen Protector if you
Mohs Scale of Hardness is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. It is named after the scientist Friedrich Mohs who invented this scale of hardness based on the ability of one material to scratch another material. The scale goes on from 1 to 10. 1 is Talc while 10 is Diamond. A typical Gorilla Glass on your smartphone won’t scratch until it comes in contact with a Level 6 Hardness on Mohs Scale. Sapphire is at a level 8/9.
Now you might ask me that Gorilla Glass is on Level 6 so why should we use?
If you are one of those who stay near the beach or the construction sites, there are chances that you might end up scathing your Gorilla Glass. Sand contains Quartz which is a Level 7. As a result, when you go on a beach or construction site quartz might come in contact which may scratch your phone. Ideally, keys and coins won’t do any damage on your phone as they fall on Level 2/3 on the Mohs Scale. The only culprit is Quartz.
Now, Screen protectors aren’t very essential. But I would recommend using at least a PET to protect from the scratches on the beach. Anyways Prevention is Better than Cure! And Smartphones are the most abused pieces of Technology on this planet.
I hope now we have learned something interesting here today
so let's end this here and will meet you guys in my new topic again
Previous Tech Bytes[Device Tech Bytes] [#2] All About Reverse Wireless Charging: Know More! --JBJ2
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hope I will come up with good content again in my next topic
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