The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Why? (bottom is brighter)

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by RealArt, Sep 5, 2006.

  1. RealArt

    RealArt Notebook Enthusiast

    Reputations:
    0
    Messages:
    44
    Likes Received:
    0
    Trophy Points:
    15
    I have worked with two compleately different laptops in my short period of lappy ownership but both of them have the same problem - bottom of the screen is brighter than the top. This of course causes color gradiant deffect and the same color displayed in the top of the screen will always be darker than the same in the bottom.

    The laptops were Acer Aspire 5024 and Fujitsu Siemens Amilo L (or something). I have heared a lot of people saying howbrilliant the fujitsu screens are but my experance is totally different. The Acer actually is even worse. Color gradiant was so intense I decided to take it to the warranty service. They decided to change the motherboard of my acer 5024 but I jut cant see any reason for that. The problem was LCD panel and backlighting not the video card and board.

    I am totally disappointed by laptop screens and I am afraid they (idiots in warranty service) wont do anything to make things better. Probably all the acers have the same dramatical light leakage/color gradiend deffect.

    :(
     
    RealArt, Sep 5, 2006
    #1
  2. digitaltrav

    digitaltrav Notebook Consultant

    Reputations:
    16
    Messages:
    259
    Likes Received:
    0
    Trophy Points:
    30
    Nature of the beast with single bulb LCD panels. Look into the dual-bulb Ultra BrightView technology from HP if you are looking for a fantastic screen. I'd say it's between those and the high end Sony displays.
     
    digitaltrav, Sep 5, 2006
    #2
  3. RealArt

    RealArt Notebook Enthusiast

    Reputations:
    0
    Messages:
    44
    Likes Received:
    0
    Trophy Points:
    15
    Do you mean Acer 5024 screen has only one backlight unit only in the bottom?
     
    RealArt, Sep 5, 2006
    #3
  4. RealArt

    RealArt Notebook Enthusiast

    Reputations:
    0
    Messages:
    44
    Likes Received:
    0
    Trophy Points:
    15
    I am pretty sure the acer 5024 has two backlights. One in the top on on in the bottom. Even that idiot in warranty service said that they are two. And I havent noticed any difference in brightness of 100% white.

    However the Amilo is different.And it feels like it has only one backlight.

    So the thing is - why is the acer screen so bad?
     
    RealArt, Sep 5, 2006
    #4
  5. Ice-Tea

    Ice-Tea MXM Guru NBR Reviewer

    Reputations:
    476
    Messages:
    1,260
    Likes Received:
    0
    Trophy Points:
    55
    The technology is called 'edgelit' (sp?) The light is coupled in at the sides and dispersed. The quality of the diffuser and the actual technology causes this. It allows very thin screens, wut it causes the saif uneven light distribution.
     
    Ice-Tea, Sep 5, 2006
    #5
  6. RealArt

    RealArt Notebook Enthusiast

    Reputations:
    0
    Messages:
    44
    Likes Received:
    0
    Trophy Points:
    15
    So not all the Acer screens are that bad? I hope they aren't. If fact the brightness wasn't the biggest worry. 100% white was pretty much the same in top, bottom and sides. Problem was uneven light blocking. I guess it's LCD matrix who causes that darker color gradiant deffect. Or I am wrong?
     
    RealArt, Sep 6, 2006
    #6