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    What kind of panel is in a 18.4" 1080p Qosimo?

    Discussion in 'Toshiba' started by atomeater, Jul 27, 2010.

  1. atomeater

    atomeater Notebook Guru

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    Does anyone have a Toshiba Qosimo with a 18.4" 1080P screen? (or know anything about them)

    If you do could you please download a "utility like CPUID - System & hardware benchmark, monitoring, reporting. In the left pane, click on Video and post the number shown after monitor type. That's the manufacturer's panel number." (credit to discuz)

    And any experiences firsthand with it would be great. Contrast, viewing angles, brightness, accuracy of colors, any washed-out colors or areas?

    I'm trying to decide on a laptop and a deal I found on a Qosimo is ending the end of this month & screen is my #1 priority.

    THANKS :)
     
  2. Ingvarr

    Ingvarr Notebook Deity

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    Its Samsung LTN184HT01

    You can find measurements here - Notebookcheck: Review Toshiba Qosmio X500-10V Notebook
    Just ignore part about it being LED. This is mistake, because the panel in question is not LED, but dual CCFL

    The panel is good in size, contrast (very good) and colors (90% NTSC gamut).
    Unfortunately its quite dim. Viewing angles are average.
     
  3. atomeater

    atomeater Notebook Guru

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    Ty, do you think it (dimmness) was a problem with the LED setup or the panel?

    The reason I ask is, I was under the assumption LEDs were brighter & didn't dim much over time; As opposed to CFL which is dimmer and dims over time.

    If that's true and it's the same panel I'm concerned that 4, 5, 6 years from now the screen will be too dim and that combined w the super reflective screen would cause visibility problems. My eyesight isn't great to begin with.

    What do you (& anyone else) think?
     
  4. Ingvarr

    Ingvarr Notebook Deity

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    This panel is not LED, it's dual CCFL.

    And as long as it white backlight, technology has nothing to do with brightness. More colour you get, more dim it becomes (because more light gets filtered due to narrow-band color filters), same with CCFL or white LED.

    Exception is RGB LED only. They are both bright and colorful, because backlight emits precisely spectrum that matches the filters => no light lost and could be very saturated colours.

    All LEDs are degrade and get dimmer over time. But, same as with CCFL, should not be of any concern unless you buying very old used laptop.

    Personally I've disliked this FullHD panel so much that instead I've got me X505 with HD+ 1680x945 one. That panel was worse in color and contrast, but at least it was a lot brighter and more readable (DPI is almost standard - about 100).

    But if you want display from top of the laptop range in terms of visual quality, unfortunately neither of X505 options will fit the bill... They totally worth their price, but are quite average.
     
  5. atomeater

    atomeater Notebook Guru

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    So the 1080p panel was better in color and contrast but much worse in brightness than the one you switched to (HD+)?

    How would you compare it to say a Sony Viao F 16" 1080p or Dell Studio 17 1080p? Or any other 16+" laptop
     
  6. Ingvarr

    Ingvarr Notebook Deity

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    Exactly.

    I haven't seen Studio 17 with full hd display.

    But Vaio F's full display is much better, both in color vibrance and brightness (not to mention it's anti-glare too). Though it's quite smaller in physical size :)
     
  7. LTN184HT

    LTN184HT Notebook Consultant

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    Not exactly true as Samsung have physically altered their 18.4 screen specs without publishing the specification variations between LTN184HT01,LTN184HT02(RGB LED) and LTN184HT03.

    90% color gamut across all samsung's 18.4 1080p is inconsistent with my test result by Eye one Pro.

    1.LTN184HT01 has great advanrage of 90% color gamut but comes with average viewing angles horizontally as well as vertically ( Color Shift).

    ASUS W90Vp: ATI Mobility Radeon HD 4870... with CrossFire - AnandTech :: Your Source for Hardware Analysis and News

    Notebookcheck: Test Acer Aspire 8920G Notebook

    2.LTN184HT03 offers wide viewing angles and mediocre 161 cd/m² but comes with sRGB color Gamut, which is inconsistent with the published details.

    Review Toshiba Qosmio X500-10V Notebook - Notebookcheck Reviews

    Review Clevo M980NU Notebook - Notebookcheck Reviews
     
  8. LTN184HT

    LTN184HT Notebook Consultant

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    The actual panel model is LTN184HT03 with relatively lower color gamut(72% color Gamut), decreased contrast ratio( from 800:1 to 600:1) and far wider viewing angles.
     
  9. Ingvarr

    Ingvarr Notebook Deity

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    It was HT01 on X505 I've tested.
    Regardless HT03 is not that better by any means, still very dim.
     
  10. LTN184HT

    LTN184HT Notebook Consultant

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    Actually, you may apply i1 pro to calibrate these screens to keep you away from experiencing the headache.
    Illumination on LTN184HT01 and LTN184HT03 are both average.
    During the calibration, I manage to keep R/G/B at the same color temperature of 6500K.
    Furthermore, both control panel settings and the icc profile have been altered.
     
  11. Ingvarr

    Ingvarr Notebook Deity

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    I didn't experience any headache with these screens. I didn't really care about color temperature much.
    My only major complaint was the dimness, and no calibration could make backlight brighter than it's already is.
     
  12. ChiroVette

    ChiroVette Notebook Evangelist

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    SO in terms of practical applications is this just confirmation that the 1080p Toshiba screens are simply not very good, particularly nt bright enough for regular computer functions, such as writing in Word and other applications where bright whites are required?
     
  13. LTN184HT

    LTN184HT Notebook Consultant

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    Color temperature is always the crucial factor.
     
  14. Ingvarr

    Ingvarr Notebook Deity

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    It's quite good as long as you don't let sun in your room. As long as sunlight is not involved, you'll get bright whites.
     
  15. ChiroVette

    ChiroVette Notebook Evangelist

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    Ah okay that doesn't sound so bad to be honest. I am no going to be using a laptop in direct sunlight for the most part. And I would imagine that even if I were outside, say in the shade, that while it might be a little glare-ridden that I would be able to write chapters at a time. Is that a fair assessment?
     
  16. a4500435

    a4500435 Notebook Evangelist

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    No glossy screen is going to look good outside, but I guess if you were in the shade and it wasn't too bright around you, it'd be manageable at least.