How do cell phone screen protectors affect touchscreen performance?

How do cell phone screen protectors affect touchscreen performance? 

Topic by Ch2112 1 year ago  |  last reply 1 year ago


what is the size of my laptop screen?

 i have a hp dv8t with an advertised 18.4" screen it's got edge to edge glass and i want to get a screen protector for it.  i've searched but i can't find anyone that makes a screen protector for my computer so i figured i'll just make my own out of piece of screen protector the same size (simply missing the holes for the microphone and presumably the rounded corners on my screen).  HP's website lists the screen size as 18.4 " but it says it's dimensions are 17.16" wide (maybe i'm just reading it wrong) www.shopping.hp.com/webapp/series/category/notebooks/dv8tqe_series/3/computer_store .  There's the link for where HP has the specs for my computer.  If you can help with any of my questions, thanks!

Question by cdubnbird 9 years ago  |  last reply 9 years ago


Tempered glass screen protectors - understand and beware!

I recently had the joy of needing a new screen protector for my mobile after being dumb enough to drop it on gravel. The hard cover took all the impact but the film protector on the screen was scratched badly. Was old and partially worn anyway so I decided to upgrade to a Tempered Glass screen protector. Being somewhere rural I had no chance to get one in a shop so I ordered online. With no intention of advertising for some sellers, I collected a few links so you can check what I am talking about: Item1 Item2 Item3 Item4 Item5 Item6 So, what is my concern with these? They all can be found on amazon and other online services as well as on local markets... As I said I ordered a glass screen protector. If you check these listings and even some of the packing you will notice they all have a thing in common - being shatter proof and of 9H hardness. I also love this video showing how to remove and fix a glass screen protector! The last time I checked glass had one very distinct feature: It is hard and before it really bends it breaks - unless you use fibre optics of fibre glass cloth... What is my concern and warning here? Pretty simple: Stay away from expensive scams! Some claim their screen protector is only 0.25mm thick, even the 0.2mm one I measured was over 0.5mm with the glue... The hardness of 9H refers to the so called Moh's hardness - look it up on Wikipedia if you like. That means these tempered glass protectors would have a similr hardness than a diamond, or at least close to it. Problem is that they are made from plastic to start with and not glass at all. They claims that the screen protector is flexible because it is so thin - again a fake! Even the thinnest tempered glass will shatter if you bend it enough, not so these plastic ones. If you think I am making all this up try to use a really sharp knife or deburring tool and cut the thin sides of one of these protectors. All the ones I tested could be cut quite easy - and I though glass can't be cut with a kinfe... A nice website showing that the scratch resistance is far from the claims can be found here. And a video showing how a real glass screen protector sounds and breaks can be found here. So is it really all bad and should I avoid getting one? Not really if it is only for the added protection. To be clear here, and without the intention to blame any of the above sellers, some protectors actually do have a top layer made from glass and you can hear it as in the above video - it sound solid and not like plastic if you tap it with something hard. Another factor is the simple fact that plastic absorbs impact much better than glass. So where a real glass screen protector might shatter and crack like in the above video, the fake ones might one get a nasty dint or scratch. But you should be aware and clear about what you get and what to expect from it. These glass imitations are made from a strong polycarbonate plastic, similar to the stuff used for bullet and explosion proof "glas" windows - if you every watched the Mythbusters you have seen the big sheets I mean. The top layer of these things is specially treated to repell water, oil and dirt, it also gives the surface the good scratch resistance. The technique is nothing new, camera lenses, plastic sheets and the clear covers you see over the timetable at your bus stop all use it. The new thing is to intentionally mislable a product to make the consumer think it is glass ;) What is the real difference for the user? Check this video. Here a guy performs a drop test with a real glass screen protector. Thing is once the protector breaks the screen itself is broken too but until then it was not too bad. Here it is demonstrated how a real glass screen protector reacts to certain types of abuse - one of the reason I decided on glass. Compared to the plastic counterfeits just the sound on the glass is worth it, but I think the hacksaw was best. Another video from XDA gives a bit more info on how the glass is made - if you can't seeing a phone being abused then don't watch the drop tests at the end ;) Glass with these hardness levels and types of surface protection will give the user a long and worry free use of the phone. The plastic fakes will perform at a similar level for some time but will show signs of wear long before even the top coat of the glass one fails. Both types have their uses and if the fakes would be labeled correctly the user would actually benefit from that. On bigger screens like a tablet I would actually prefer the plastic ones to prevent damage once it needs replacing. On a mobile used in less than perfect conditions I would also go for plastic as it usually is a bit thinner and will fit better within quality hard covers. But when it comes to real abuse like using with dirty fingers most of the time or mostly outdoors where a lot of dust and fine sand can be involved I always go for glass. If you paid attention to the surface treatment then you already realised that the plastic and the glass are in the same region, making them quite scratch resistant. Still fine sand or metal dust will scratch it.... The difference is in the hardness of the actual material that was covered with the oleophobic film. Glass will not give in any way, where plastic is much softer - so not to be confused with the surface hardness! This mean that sharp and point object will easier penetrate the plastic than the glass, something to be considered if you often ecounter harsh use. In terms of actual protection we need to differenciate between surface quality and actual screen damage. After all when badly scratched we can replace the protector but if the display got damaged we are back to square one. The surface hardness was already covered so let's move on to the screen itself. In some of the above videos you can see the abuse a screen might see in normal conditions, and if we would not drop our phones so often repair shops would not be at every corner LOL I have done quite a few screen repairs, mostly for friends and work mates that did not want to pay the hefty extras in a repair shop. From there I got the stories on how it happened and in almost all cases the screen cracked when the phone landed on the corners. In one case the screen and glass protector failed, including the actual display when the phone was dropped out of a 4WD and landed screen first onto a rock. A glass protector will spread the (direct onto the face) impact force onto a much larger area, where a plastic one will produce a dint onto the actual screen much sooner. So again glass wins in terms of actually protecting your expensive screen. But be aware that all this is useless if the phone lands on the corners!! Let me explain: Both the top glass on your screen and the screen protector have a thin layer of "glue". This acts like a shock absorber, so unless an impact goes deep enough so the pressure on the actual screen is too much only the protector should fail. But the screen itself is a tight fit into the frame of the phone, so all side and corner impacts go directly into the glass. As the rest of the glass has no way to give or go the stresses will crack the screen. How should I treat my phone with the new screen protector? Exactly the same way you would without it of course. But if you don't have a proper cover that offers protection of the corners you should invest in one. Having a quality protector and a good case does not mean your phone can be used as a football, see it as an added insurance in case something does go wrong. For obvious reason it can also pay off to have a spare at hand, if something bad happens that requires replacement of the protector you won't be left with an unprotected screen ;) Last but not least, double it up: For people that already know their screen will see a fair bit of abuse in term of scratches it is a good idea to put an extra film protector onto the glass one. Once it is too scratched you peel it off and replace it, while the glass protector gives you the actual protection for your screen. Corning Willow glass As time of wrinting Corning Willow glass is the only "flexible" glass on the market, unless stated with your flexible screen protector you can assume it will be just plastic. I did not list it above as this high tech material is mainly reserved for displays and at least to my knowledge is not available for screen protectors, although I will stand corrected as I have to assume some big players use it for their protectors. The material is actually a sandwich where an ultra thin sheet of glass stis bewteen two layers of durable coating, read it up on their website it is quite interesting. It won't reach the strength of their famous Gorilla glass so without an outer plastic that has the additional oleophobic coating it won't provide the strenght of real tempered glass protectors. Some phones like the Galaxy Round and the fleixble HTC phones use it for example.

Topic by Downunder35m 3 years ago  |  last reply 5 months ago


Less then 2 yr old flat screen - has died....I believe...

My 17" Gateway flatscreen went blank this morning while I was at meeting. My wife claims she didn't do anything.....that it was blank when she saw it. It was not in sleep mode, nor was a screen saver on. I noticed the "power button" which is normally green (power up, with computer signal) or amber (powered up w/out signal), would not come on. I attempted to see if any of the adjustments on the side might have been bumped, no effect. I tested to make sure there was power from the surge protector (switched power outlets after a shut down) to no avail. After my 4th reboot, I subbed in my old monster sized 17" CRT tube monitor, and it works fine. Resolution is different, but it works.....but that pushed the monitor about 2 feet closer to my nose then I would like (it is about 10 inches from my face. )Did I miss anything as far as testing the monitor before replacing it? I personally think the PSU in the monitor went on the fritz, but I am open to suggestions. EDIT: The old CRT is now back ni it's storage area, and the newest LCD screen is up and running.

Topic by Goodhart 10 years ago  |  last reply 10 years ago


How can I improve the quality of my instructable? Answered

Since I've joined instructables, I have made two instructables so far. My first one was featured on the homepage (which I was ecstatic about) but my second one wasn't. It did have more views but I would still like to improve how I write instructables. Does anyone have any critiques? Here's the link for the screen protector one (not-featured)- https://www.instructables.com/id/How-to-Make-Your-Own-Screen-Protector-for-less-th/ And the link for the phyllo dough squared (featured)- https://www.instructables.com/id/Delicious-Phyllo-Dough-Squares/

Question by jen7714 8 years ago  |  last reply 7 years ago


how can i make a video projector?

How can i make a video projector for less then $80.00? i want the projected screen size to be about 1 meter across and exceptional quality. I'm mainly having trouble with finding a SMALL but HD screen. i also want the LCD to be about 5 inches across. it doesn't have to be exact, but i want it to fit inside a shoe box (hopefully cheep  =D  ). i did find on eBay a small, DVD player with an 8.5 inch screen with Analog Audio and , Composite inputs which might work. i also need help for LED's, preferably from www.superbrightleds.com can anyone HELP ME!!?!

Question by -max- 9 years ago  |  last reply 8 years ago


Rocketeer Rocket Pack, Ghostbusters Ghost Costume, Headless Horsewoman

Rocketeer Rocket Pack Ghostbusters Ghost Costume Headless Horsewoman Lego Indiana Jones Costume Bloody Cut Dessert Easy Leather Punches Spike Through the Gut Secret Message Shirt Large Roller Stamp Lady GaGa Costumes Salsa Fresca Fiber Optic Fairy Wings iPhone Screen Protector Prop Pulse Rifle DIY Calligraphy Instructables.com - 82 2nd St. - San Francisco, CA

Topic by randofo 8 years ago


Still can't edit or unpublish old instructables.

1. Windows Professional 64-bit (6.1, Build 7601) 2. Google Chrome Version 43.0.2357.132 m 3. https://www.instructables.com/id/Penny-Screen-Protector-Easy-Doc-Camera/ 4. See attached photos. 5. From the above link, while logged in, I click "Edit" => "More" => "Private" => "Unpublish my Instructable and make it private!". It then takes me to https://www.instructables.com/id/private with the login screen, however I am still logged in as shown by my icon in the upper right. I have been trying to make this instructable private for three years now and I still haven't gotten a solution. I can't even edit the instructable to take out the content. 

Topic by JamesRPatrick 3 years ago  |  last reply 3 years ago


Update! Nominating Instructables to be Featured Group

Hello again. A little background on the NIF (Nominating Instructables to be Featured) Group, it is a group where people can nominate their favorite instructables to be featured in the group profile page. Click here to visit the group. New members are always welcome. This time there is a lot of exciting news to report: Newly joined members!! Thank you for participating. I can't wait to see your nominations! Locket Rocket The Ideanator Goodhart Hiyadudez Also there are newly nominated instructables. Drumroll please! Living Tealight holder made from hard drive parts by ChrysN Personalized Cards by gergi11 Technology Making a brass pocket flask by Vidar_76 (nominated by The_Ideanator) How to Make Your Own Screen Protector (for less than a nickel!) by jen7714 Put images inside QR codes by killerjackalope Workshop Sugru Soft-Jaw Pliers by mattthegamer463 (nominated by The_Ideanator) Some more news: Instructables such as Cinnamon and Sugar Apples by miso_soup, DIY Calligraphy by mhudnall, and How to Make Your Own Screen Protector (for less than a nickel!) by jen7714 got featured by a feature team member. That means that they were actually featured on the homepage. Congratulations! (A note: I forgot to add this to the groups forum topic post. Is there any way I can add it now?)

Topic by SkysTheLimit 8 years ago  |  last reply 8 years ago


could someone cut a piece of plastic for me?

I have a mp4 player i got a few days ago, but i find that the original cover plastic has a sort of paint that, when combined with the glare of ambient sunlight, makes it totally impossible to use the player outside. not only that, but the plastic on the front got a really nasty scratch on it when i was cutting open the box. There isnt a screen protector on the player. if i gave the dimensions of the plastic part thats scratched (gold-silvery part of the player) could someone cut a new piece for me, be it laser cut, cnc milled, or by hand, whatever. all i ask is that its clear plastic. for those who would like to know the plastic is 1mm thick. if it could be done for free it would be so greatly appreciated.

Topic by zack247 8 years ago  |  last reply 7 years ago