new lcd screens???


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  1. evo313

    evo313 Member This Topic's Starter

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    i was reading some blogs saying that htc changed lcd manufacturers.. the first screens were made by samsung and these new ones are made by who knows... has anyone noticed anything different?
     

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  2. horadin

    horadin Well-Known Member

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    What blog?

    Others have stated that there are two different sources that were being used for the screens but it is no reason to be concerned, it is a common practice. I didn't know that samsung supplied any screens for the Evo.
     
  3. sikclown

    sikclown Well-Known Member

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    I have seen two names regarding the screens ... One manufacturer is Epson and the other is Novatec
     
  4. sessman

    sessman Well-Known Member

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    this is what i have heard as well
     
  5. evo313

    evo313 Member This Topic's Starter

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  6. EarlyMon

    EarlyMon The PearlyMon Moderator

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    MmmK.

    The video is far from credible. Note that one phone has been rooted and is not running stock stuff at all. Also, the guy that made that is an idiot. Seems like only yesterday... http://androidforums.com/htc-evo-4g/107247-interesting-video-showing-latest-evo-compared-1st-ones.html

    Taiwan has some very impressive LCD fabs, as does Japan and Korea. And everyone supplies everyone in the tech sector.
     
  7. THEFORCE

    THEFORCE Well-Known Member

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    Whether you are stock or not won't change the screen quality plus you can see how the back of the phone is a different texture.
     
  8. EarlyMon

    EarlyMon The PearlyMon Moderator

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    Let's stick just to the front, the screen.

    The guy makes a big deal about the white level.

    MmmmK.

    1. LCDs - all of them - have a slight burn-in period for their backlighting. They will change in brightness and color after anywhere from 24 to 40 hours of on time.

    2. Panels from different suppliers will have variations in their light output.

    3. Panels from the same supplier will have variations in their light output, especially if they're not from the lower-tolerance outputs used for TVs.

    NONE of those factors are indicative of screen quality for this market.

    And finally, the number one rule for baseline test and evaluation:

    Never compare apples with oranges.

    You're rooted, I'm rooted - tell me here and now that our screens haven't gotten much more of a workout than a new one. Tell me that our screens haven't gotten more of a workout than stock users.

    The variations I mention can all be tuned out. My LCD HDTV has some 14 adjustable parameters for it - most having an adjustment range of 11 different settings. If there were only two such adjustments, that would leave 121 possible settings. And our phones have how many adjustments?

    The video showed nothing, it was not apples to oranges, the guy was an idiot (perhaps very honest and certainly well-intentioned - but completely out of his depth) - there was nothing there to make quality conclusions about.
     
  9. THEFORCE

    THEFORCE Well-Known Member

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    Well the point is that there was a change made... even over at xda they have pointed out two different screen manufacturers, and the change with the back cover happened when they switched lcd makers.
     
  10. RoboMonkey

    RoboMonkey Well-Known Member

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    So, what's the point?
     
  11. EarlyMon

    EarlyMon The PearlyMon Moderator

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    Yeah. OK. I have no problem if the point was a change was made.

    I certainly took the vid as concluding that the change was substantive with respect to quality. It's simply not.

    Over at xda, last I checked, the 30 fps change only applied to the Epson-equipped screen models. All that says to me, until all data are in, is that the effort had to focus at a very low level (in code) to get the ball rolling. It didn't imply to me that there's a quality issue prohibiting other revisions from receiving the fix.

    I totally agree in advance that at this hour of the day, I'm a bit obtuse with my choice of example, but my point was - unless and until all data are available, it's too easy to draw a bad conclusion from a single observable.

    Per evo313, the OP:
    The question itself is obviously pertinent - but seems already biased. Maybe it's just me, but that's how I read the concern.

    That said, and if true, let's ask what we know and what we can know:

    a. Variation can be a quality indicator. Too bad everyone was too excited to compare Evo to Evo within the same revisions - so far, I think we've all been too excited about having one to even stop and think of that comparison.

    b. The panel maker can be a quality indicator. But unless you know the real deal in the supply chain and the source fabs' quality record - stuff we can't get to - that's going to be hard to ascertain.

    c. The panel maker can be a design indicator. OK - where do we start with that one? What type are our LCDs ? TN, IPS, S-IPS, AS-IPS, IPS-Pro, H-IPS, E-IPS, AVS, VA, MVA, A-MVA, S-MVA, CP-VA, S-PVA or AFFS? Driven how? STN, DSTN or TFT? We're going to get about zero answers on that one (but my gut tells me it might be S-IPS and my eyes are agreeing a whole lot with that - but I have no clue really).

    And don't even start me on the control circuitry and who made the glue logic.

    The very existence of questions like that make me never hesitate to buy the seven buck a month protection plan ($100 deductible - jerks).

    For this market, specifically this device, I'm more interested in build quality.

    I turn to your comment that I'd set aside earlier about the back texture being different.

    Now that's much more interesting.

    Was it a don't care? Was there some required change in insulating properties from the grounding complaints? Was there some problem in the supply chain?

    I'm sounding obsessive, but in my experience, most quality managers have serious look and feel issues with consumer changes.

    Or - maybe it's just indicative of a don't-care supplier change. All necessary changes to meet high demand.

    I dunno. I'd have thought that they'd have projected properly for the market reaction to a device like this.
     
  12. BetterMost

    BetterMost Banned

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    Yes my screen is much brighter and white's seems more pure on replacement #3 The screen also seems to fit better in the shell.
     
  13. EarlyMon

    EarlyMon The PearlyMon Moderator

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    And why are you on replacement #3 at this point?

    You've had 4 Evos already?

    What is going so wrong that you've replaced 3 of them?
     
  14. BetterMost

    BetterMost Banned

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    LOL no 3 evos. #1 worked flawless for two weeks then it started rebooting 20X a day no matter how many master resets were done. Then Handset number #2 had a problem with the 4 bottom keys LEDs not turning completely off when in sleep mode and draining the battery. Handset number 3 I just got last night no glowing lower keys like #2 but still to early to tell if its going to behave or not.This one has the brightest screen of the first two so it seems indeed some change was made. I'm not holding my breath the general quality of these HTC handsets is disappointing at best. Number 1 was hardware build # 2, two and three are hardware build #3s.

    More on my evo journey:

    http://androidforums.com/htc-evo-4g/107632-ok-now-im-part-three-handset-club.html


    http://androidforums.com/htc-evo-4g/106893-i-just-notied-my-evo-glows-dark.html
     
  15. sagedil

    sagedil Well-Known Member

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    This is incorrect. There were different suppliers since day one. Difference in screens not a "change" just different.

    Same goes for those ........ who keep saying they want a "later" version. Version 3 phones were sold on launch date. Screens from both suppliers sold since launch date.

    Not a change, just different.
     
  16. BetterMost

    BetterMost Banned

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    And you know this to be a fact? Documentation to back this up?
     
  17. ArtGuy

    ArtGuy Well-Known Member

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    The only thing that makes me question your theory is that they are no longer selling the 002 version phones. And many of the concerns that people have had, do seem to have been addressed in the phones labeled 003.

    So just because they were both available on release day, doesn't necessarily indicate that there were not updates to the hardware midway through the manufacturing process.
     
  18. EarlyMon

    EarlyMon The PearlyMon Moderator

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    Yeah. There's several problems with that.

    First - I don't think it's a theory that rev 3 phones were selling from the get-go unless there are people on these boards lying about their rev numbers.

    Second - I have a rev 2 phone with zero issues. Nada. Zip. Dink. None. Got it on 6/6.

    Third - You just contradicted your own logic. If the rev number is not indicative of rigid configuration control, and if updates occur midway through the manufacturing process then you can't correlate rev 3 to fixing or addressing anything.

    People are drawing a lot of conclusions with few coordinated facts.

    The signal to noise level in these forums is way low. There are multiple threads started every other day on the exact same subjects, and any threads with anything to do with quality or problems always has a nice, healthy share of backbiting, arguing, iPhone vs. EVO and Mac vs. PC posts.

    It's impossible to gather data here - we're just collecting anecdotes.

    And the people are trying to collect and share data are too often either inexperienced with their phones or inexperienced as testers to gather and report all relevant observables.

    I can't stop any arguments, but you called what one guy said that he knew as a fact to be a theory.

    As Kosh would say - And so, it begins.
     
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  19. EarlyMon

    EarlyMon The PearlyMon Moderator

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    Doooooood. I feel bad for you.

    I didn't read those threads at all before. I work with guys who insist on carrying two or three phones so that's what I thought the first one was about. I thought the second one was that you just had your brightness cranked up on something newbie like that.

    Whoa.

    Well - third time's a charm, best luck!

    PS - see above on my take on the documentation to support which rev thing.

    PPS - By the way - even you cannot conclude that some change was made.

    You may well be comparing your first non-lemon with two other lemons.

    In such a case, build details or revision will have nothing to do with it.

    Test engineering logic is not always obvious, but it's true and it works.

    PPPS - My EVO screen is way bright. Can't go to the highest setting and the brightness control in Aldiko (book reader) takes it to thermonuclear.
     
  20. ArtGuy

    ArtGuy Well-Known Member

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    2 questions...

    Do you work 3rd shift? And did you stop off at the bar on your way home from work this morning? :D

     
  21. EarlyMon

    EarlyMon The PearlyMon Moderator

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    No, I simply work as the director of R&D for the world's leading supplier of reliability test solutions for the semiconductor industry and I'm up at all hours usually chatting with my clients and friends overseas.

    When I'm not over there chatting with my friends and clients here.
     
  22. aliveon2legs

    aliveon2legs Well-Known Member

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    So, only some EVO's have a 30 fps limitation? Is there a way to know what screen is in my phone?
     
  23. sagedil

    sagedil Well-Known Member

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    No all Evo's have that issue. The "fix" only works on some screens.
     
  24. EarlyMon

    EarlyMon The PearlyMon Moderator

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    Sorry - this was what I wanted to avoid.

    All EVOs have the limitation.

    The geniuses and magicians over at xda have tinkered together a fix.

    It's quite low-level stuff, is presently tied to specific hardware.

    It's in its infancy.

    Not unusual for experimental/emerging stuff in its infancy to be limited as to the supported configurations.

    No need to jump the gun, I just leave those compadres alone to work. ;)
     
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  25. drksilenc

    drksilenc Well-Known Member

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    i doubt better most even has an evo he has posted so many troll comments its funny just to urk people. notice the large font hes using. The main difference between the screens is the drivers and thats bout it. The v2 of the phone pritty much only had the nova only.
    I for one am glad that they are using 2 different screen companies because with that we shouldnt have nearly the supply issue that the incred is having this very moment
     

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