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    specs on CCFL vs. LED screens

    Discussion in 'Lenovo' started by pipspeak, Jun 30, 2009.

  1. pipspeak

    pipspeak Notebook Deity

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    As I continue to wait in vain for Lenovo to offer the LED WXGA+ screens again on the T400 I'm also now considering the CCFL version and wanted to see if anyone knows the specs (such a brightness, contrast ratio etc.)

    The current screen on my T61 is, quite frankly, crapola so I really don't want another repeat of that -- horrible viewing angles, light leakage, appalling contrast ratio, washed out colors.

    How bad is the 14.1" CCFL WXGA+ screen?! :D
     
    pipspeak, Jun 30, 2009
    #1
  2. The Fire Snake

    The Fire Snake Notebook Virtuoso

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    The LED backlight is not going to help with viewing angles. It will allows the screen to be brighter with using lower power and maybe make the screen more evenly lit. But if you take a bad screen and put a LED backlight behind it, it won't magically fix the quality of the screen to make it a good one.
     
    The Fire Snake, Jun 30, 2009
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  3. vert

    vert Notebook Consultant

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    i have the wxga+ ccfl and it really isnt that bad, only complaint i have about it is the brightness, not nearly as bright as the led on my dv4.

    the backlight seems even, i cant see any bleeding or anything else. viewing angles seem pretty good, especially the horizontal.

    overall its not that bad, but i do wish it was brighter and as efficient as the led.
     
    vert, Jun 30, 2009
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  4. MidnightSun

    MidnightSun Emodicon

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    The WXGA+ CCFL panel is rated at 200 nits, I believe, which is actually quite similar to the brightness of the WXGA+ LED panel that was previously offered with the T400.
     
    MidnightSun, Jun 30, 2009
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  5. zenit

    zenit Notebook Evangelist

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    CCFL WXGA is 185 nits, LED WXGA is 220 nits, CCFL WXGA+ is 200 nits, LED WXGA+ is 250 nits
    All should be 1:300 contrast ratio (in actually lower if you measure) and crappy viewing angles.
    WXGA LED (LG version) has slightly better contast ratio of 1:400 and is the newest of the screens offered. When you order it, its a lottery against crappier Chi Mei panel.

    here are the specs on WXGA+ LED panel (the LG variant):

    Category LP141WP2
    Resolution 1440x900 WXGA+
    Aspect Ratio 16:10

    Number of Colors 262K (6 bit)
    Brightness (nit) 250
    Contrast Ratio 300:1
    Color Saturation (%) 45
    Viewing Angle (°, H/V) 80/50
    Response Time (ms) 16
    Interface LVDS 2 Port
    Outline Dimension (mm) 319.5x206.5
    Thickness (mm)(max.) 5.50
    Power Cosumption† (W) 4.6
    Weight (g) 360
    Remarks White LED
    MP Schedule MP


    WXGA LED (LG version) is this panel:

    Category LP141WX5
    Resolution 1280x800 WXGA
    Aspect Ratio 16:10
    Number of Colors 262K (6 bit)
    Brightness (nit) 220
    Contrast Ratio 400:1
    Color Saturation (%) 45
    Viewing Angle (°, H/V) 90/50
    Response Time (ms) 16
    Interface LVDS 1 Port
    Outline Dimension (mm) 319.5x206.5
    Thickness (mm)(max.) 5.50
    Power Cosumption† (W) 4.2
    Weight (g) 360
    Remarks White LED
    MP Schedule MP
     
    zenit, Jul 1, 2009
    #5