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| Thread ID: 45137 | 2004-05-11 08:53:00 | Are LCDs scared of fingers? | oggy (1250) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 235791 | 2004-05-11 08:53:00 | Passing thru a local computer shop today I stopped to look at the LCDs. There they were, some with plastic shields over the front and a large notice in front of the display, something to the effect "Don't touch the LCD screens ... the acid from your fingertips may etch the screen". Now either they have Sigourney Weaver's 'Alien' for a customer or they really really really don't like cleaning the screens....or perhaps it's true and we should all be careful about where we touch ourselves? Any one care to share any comments on how LCDs cope with fingerprints, as opposed to CRTs? | oggy (1250) | ||
| 235792 | 2004-05-11 09:13:00 | It all depends on just where your fingers have been beforehand I guess. There certainly is no need to touch the screen, but some people just cant help themselves. I have 4 LCD panels here, and none have been damaged by fingerprints. Its just a nuisance to clean them, and thats more likely the reason in the shop as well. Its glass, and any hydrofluoric or ascetic acid (and several other types) could etch into it, just like it could on their shop windows. I assume they have the same sign on the windows? |
godfather (25) | ||
| 235793 | 2004-05-11 10:27:00 | >ascetic acid So GF, do we need to keep all yogi, llamas, and gurus well away from our precious screens? Or perhaps only the sarcastic ones. ;) |
Winston001 (3612) | ||
| 235794 | 2004-05-11 12:44:00 | Well spotted. Acetic would have been better. But its best if Ascetics are kept away as well, just in case. Also best kept away are lawyers? |
godfather (25) | ||
| 235795 | 2004-05-11 13:09:00 | What about pushing your finger against the LCD crystals reasonably firmly and moving your finger around?? Would a fingernail damage it? Scratch it? Thing is I will get a flatscreen monitor when I finish my degree, but in the mean time people come over to "help" me and decide to point stuff out to me on the screen by using their fingers and they start touching the screen making ripples in the display. I'm sure it can't be good for me either if I'm wanting a good lifespan put of the thing?? What about leaving your LCD monitor on all the time without turning it off for over a period of say 3 years?? Would that cause the lifespan of the monitor to decrease?? |
KingWave (5517) | ||
| 235796 | 2004-05-11 13:31:00 | > What about pushing your finger against the LCD > crystals reasonably firmly and moving your finger > around?? Hard enough, you could damage the display, yes. > > Would a fingernail damage it? Scratch it? Its glass. But you don't have to touch it, its not compulsory.... > ] > What about leaving your LCD monitor on all the time > without turning it off for over a period of say 3 > years?? Would that cause the lifespan of the monitor > to decrease?? Life is limited by the backlight. New screens seem to be rated at 60,000 hours. 6 years + Probably longer than a CRT. But you dont have to leave it on, there are power saving modes available on PC's. |
godfather (25) | ||
| 235797 | 2004-05-11 22:00:00 | Ok, so it's theoretically possible to damage them with your digits. Has anyone out there actually had any real life experience of it happening? (It's OK, I think I'll wait until the kids leave home (again) before I purchase an LCD ... but then again...that might just make them come back...again.) |
oggy (1250) | ||
| 235798 | 2004-05-11 23:43:00 | Aside from all the technical reasons that there may or may not be... there is one plain and simple reason. Computer do not operate in braille. There is no excuse for smearing fingers all over the glass. I consistently find myself grabbing peoples wrists as they reach towards my screen to point something out as damned near everyone needs to make smudging greasy contact with the glass to get their point across. |
whiskeytangofoxtrot (438) | ||
| 235799 | 2004-05-12 00:13:00 | What sort of technology is used on those touch sensitive screens that some places use? Thinking of the ones I've seen, they're probably LCDs. | oggy (1250) | ||
| 235800 | 2004-05-12 02:30:00 | It's a common problem . A large proportion of the population have eyes in their fingertips . They can't see something (especially if it's both fragile and expensive) unless they have touched it . Even the vinegary self-denying types do it . (good one GF ;-)) It's not so much "acid" as the natural oil . That could leave permanent marks on anti-reflection coatings . (So I suppose shops would love ID card so they could compare the fingerprints of culprits . ) |
Graham L (2) | ||
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