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    Touchscreen vs non brightness

    Discussion in 'Panasonic' started by mrbungle, Apr 3, 2009.

  1. mrbungle

    mrbungle Notebook Consultant

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    I'm typing this as I roll down I-15 (as a passenger) in the daytime. My 29 has a touchscreen. It isn't very "daylight readable". In fact, my Toshiba is better in the sun than this 29.

    My other 29 I use for work isn't a touchscreen, and it's brighter also. I thought these things were suppose to have the 1000nit screens or something? I'm actually not that impressed right now.

    Whats the deal with these screens?
     
  2. Alex

    Alex Super Moderator

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    The cf-30 touchscreen is 1000nit
    I believe the cf-29 is 500nits , which was an improvement over the cf-28’s
    The cf-29 non-touch that you use is brighter as it has no extra toughscreen panel in the way to block light
    What condition is the scratch sheet?
    I have found that when they are old and dirty, that they can block a bit of light transmission

    Alex
     
  3. 9nine9

    9nine9 Notebook Geek

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    You're on the right track. The touchscreen is less than totally transparent, and really hurts daylight readability. Not too much you can do about it, unless you can find one of the transflective screens, but I've never seen a toughbook that actually had one.

    nine
     
  4. Alex

    Alex Super Moderator

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    I had a brand new cf-28 mk-2 transflective 12.1 " screen
    I personally prefer the screen brightness of the regular screen outdoors
    That was probably a reason that Panasonic dropped it
    The cf-29 mk-1 was the last model to feature that option


    Alex
     
  5. mrbungle

    mrbungle Notebook Consultant

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    My cover is pretty good. I have another 29 that has no touchscreen. But the regular screen protector was hammered. I took it out. I had a bad touchscreen membrane, so I separated it and used that glassy portion of it only as the new screen protector over the LCD. This thing is bright. And clear.
     
  6. Psych0Thrasher

    Psych0Thrasher Notebook Evangelist

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    maybe it's just my bad luck but the few screen protectors that I have removed from the touchscreen leave this weird discoloration on the screen. is there some special way of taking it off or something
     
  7. ohlip

    ohlip Toughbook Modder

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    That is the anti-reflective coating that panasonic applied. you can take that out but it needs labor. Using a counter top soap and piece of cotton cloth, rub it slightly till all those pinkish/puple color coating was gone.


    ohlip
     
  8. Tom-

    Tom- Notebook Enthusiast

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    mrbungle
    If you don't like your screen brightness
    Look at a cf27
    My touch-screen is not all that bright
    It is still better than a new laptop with a glossy very reflective screen

    Tom
     
  9. Toughbook

    Toughbook Drop and Give Me 20!

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    I've been able to do this one the CF-28 with A LOT of hard work... But the one screen that I have discolored on the CF-29 was in the plastic and couldn't be rubbed out.
     
  10. Connor922

    Connor922 Notebook Evangelist

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    One thing I've also seen that could affect brightness is LCD films that not necessarily are scratched or dirty but get UV damage and yellow causing the light to look yellow. Repeated sun or office lights can cause this over time. Might also depend on the type of film, OEM panasonic, aftermarket, cheaper ones are probably more succeptable
     
  11. Zmtndoc

    Zmtndoc Newbie

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    A very basic question.

    I would appreciate tips on how to replace a screen protector. I believe I see the outline of a protector about 1mm in from the frame around the touchscreen. The protector is scratched such that reading digital maps is impaired.

    What is MrBungle describing by "touchscreen membrane" (that he separated and "used that glassy portion of it")?

    Any particular protector recommended?

    Do you just pry up a corner and peel?

    And, tips on how to apply the new protector?

    Thx.
     
  12. capt.dogfish

    capt.dogfish The Curmudgeon

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    Zmtndoc,
    It definitely sounds like you have a screen protector. What model? On some of the older models plan on having to deal with a partial removal of the anti-glare coating on your screen when you take the old protector off. This has been dealt with a few times here, do a google search of the forum. The best new protectors seem to come from Screen Patronis who always has them up on eBay. Mr Bungle is talking about removing a layer of the actual touchscreen/lcd sandwich, advanced messing about. Welcome to the madhouse.
    CAP
     
  13. Mega-Man

    Mega-Man Notebook Consultant

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    I have removed bunch of hosed up Touch Panels from 28's and just put a piece of lexan and a new screen protector to cut down the glare - lexan in the sun is like a mirror and you cant see a thing - very bright compared to the touch and even up against the OEM non touch models. They still have a thin antiglare layer that killes brightness of the LCD. As far the the 29 goes I just moved into a 29 a few months ago and it has OEM non touch - very bright compared to the 28 and has excellent daylight redability - best option is to see if you can find the OEM anti glare screen and take out the touch panel - like I said before can be done with lexan and a screen protector but getting the lexan cut just right can be a biatch to say the least - have fun -
     
  14. mrbungle

    mrbungle Notebook Consultant

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    Thats what I did on my non-touch- I took off the touchscreen film, cleaned up the glass portion and put it back in. It's super bright and looks great.
     
  15. Zmtndoc

    Zmtndoc Newbie

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    Thanks Capt. and mrbungle.

    The fuzzy desktop is only apparent with topographical maps. It may be the antiglare coating and removing that may be a loss in the bright desert sunshine.

    Great forum!
     
  16. ohlip

    ohlip Toughbook Modder

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    That will be the biggest problem if the anti-reflective coating is between the TS screen glass and the protector. If you peel it off the protector, there is a posibility of damaging or peeling off also the coating which is a pain on as.... to clear it out.


    ohlip
     
  17. capt.dogfish

    capt.dogfish The Curmudgeon

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    Regarding the removal of residual anti glare coating. Mrs. Dogfish found some new stuff, "Nature's Source" all purpose by Johnson. Completely cleaned a CF-28 screen with about 60% of coating left on in less than 5 minutes! She has to go back to the store to get her own bottle. For really tough areas use "Nevr-Dull" metal polish. It comes in a tin and is a kind of cotton batting with the polish impregnated into it. I found this when I thought I had ruined my $500 bifocals. There were tiny scratches in the anti glare coating and the polish took it all right off. It doesn't scratch the screen.
    CAP
     
  18. Toyo

    Toyo Notebook Deity

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    You just need to go ahead and purchase my CF-30! I am ready for the MK3. LOL
     
  19. Vitaliy325

    Vitaliy325 Notebook Enthusiast

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    I wonder If you can reapply that anti reflective coating, the do it to glasses and sunglasses, would it be possible to do it to laptop screens?

    Tnx,

    V.