Windows 10: explain difference in monitors


  1. Posts : 145
    Windows 10 home Version 10.0.10586 Build 10586
       06 Dec 2016 #1

    explain difference in monitors


    I have a notebook that I like to use to edit photos while on vacation. The image on the monitor changes brightness and contrast, especially when tilting the monitor forward or backward. So when I make hundreds of changes, most other than cropping need to be reevaluated when I get home to my desktop.

    Rather than buy a new laptop, I want to buy a small external monitor that I can hook via HDMI to my laptop. Now I find that I understand little about monitors - LCD, LED etc. Device manager shows my laptop monitor as "generic PnP" whatever that is.

    In short, what technology offers the best viewing angle and honest rendition of my digital photos so that I can be sure to buy something at least better than what I have?
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  2.    06 Dec 2016 #2

    If you NEED the best colour with the largest view range based on viewing angle and don't need to game much then an IPS panel monitor is the way to go.

    Reading this might help , Guide to monitor technology: resolutions, panel types, and refresh rates | PC Gamer
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  3. Posts : 267
    Windows 10 Home x64 and Pro x86
       07 Dec 2016 #3

    I appreciate that I am not addressing the question you have asked but ...

    When I experienced the symptoms you described it was the start of a breakdown of the display cable - the cable running from the motherboard [or separate display card] up into the monitor casing.

    I checked that this was the case by looking through the service manual for my notebook [which I found on the computer maker's website] to find the route that the cable took and then removing the outer casing of the monitor and the section of casing around the monitor's hinges to free the cable up.

    With these sections of casing removed the cable was not squeezed or twisted as the monitor was tilted and the symptoms [changes in brightness level, flickering] disappeared. When I put all the bits of casing back in, the symptoms returned. I concluded that the insulation between strands of the cable was breaking down.

    I found a replacement display cable online [20] and fitted it. It has been fine ever since.

    I had seen these symptoms on an identical computer several years earlier but had mistakenly thought it was a PSU problem then, before I could re-evaluate the cause, the constant unintended voltages on the various strands of the cable had written off the motherboard & the notebook died.

    So I would urge you to address the root cause of the problem instead of just switching to an external monitor.

    Denis
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  4.    07 Dec 2016 #4

    Try3 said: View Post
    I appreciate that I am not addressing the question you have asked but ...

    When I experienced the symptoms you described it was the start of a breakdown of the display cable - the cable running from the motherboard [or separate display card] up into the monitor casing.

    I checked that this was the case by looking through the service manual for my notebook [which I found on the computer maker's website] to find the route that the cable took and then removing the outer casing of the monitor and the section of casing around the monitor's hinges to free the cable up.

    With these sections of casing removed the cable was not squeezed or twisted as the monitor was tilted and the symptoms [changes in brightness level, flickering] disappeared. When I put all the bits of casing back in, the symptoms returned. I concluded that the insulation between strands of the cable was breaking down.

    I found a replacement display cable online [20] and fitted it. It has been fine ever since.

    I had seen these symptoms on an identical computer several years earlier but had mistakenly thought it was a PSU problem then, before I could re-evaluate the cause, the constant unintended voltages on the various strands of the cable had written off the motherboard & the notebook died.

    So I would urge you to address the root cause of the problem instead of just switching to an external monitor.

    Denis
    That would make sense if "lbeck" was seeing some sort of glitching. From the description, it sounds to me more like the normal image changes that you get when changing viewing angle with a TN display. (I own a cheap new Asus laptop, and the effect is very strong with it.) That occurs just by moving your head relative to the monitor, without any flexing of the cable connecting the display to the motherboard.
      My ComputerSystem Spec


  5. Posts : 145
    Windows 10 home Version 10.0.10586 Build 10586
    Thread Starter
       07 Dec 2016 #5

    Bobkn is right. It's the result of a cheap monitor attached to an otherwise acceptable laptop. The link provided by Wullail addresses mostly gaming machines and the difference in monitor construction.

    What I'm really looking for is should I by LED, TFT, LCD or whatever as a monitor tethered to my laptop via HDMI so that images will look more like what I see on my desktop at home. Wanting to avoid the brightness/contrast movement that occurs when I tilt my laptop screen.

    During a recent trip I adjusted brightness/contrast of hundreds of images in the field and needed to readjust when I got home. I can estimate these image characteristics by finding the appropriate tilt angle. But I find that hooking to e.g., a motel TV is much more accurately tuned to my desktop monitor. I'm looking for a small (12-16 " or so) to carry in my computer bag when I travel.
      My ComputerSystem Spec

  6.    07 Dec 2016 #6

    lbeck said: View Post
    Bobkn is right. It's the result of a cheap monitor attached to an otherwise acceptable laptop. The link provided by Wullail addresses mostly gaming machines and the difference in monitor construction.

    What I'm really looking for is should I by LED, TFT, LCD or whatever as a monitor tethered to my laptop via HDMI so that images will look more like what I see on my desktop at home. Wanting to avoid the brightness/contrast movement that occurs when I tilt my laptop screen.

    During a recent trip I adjusted brightness/contrast of hundreds of images in the field and needed to readjust when I got home. I can estimate these image characteristics by finding the appropriate tilt angle. But I find that hooking to e.g., a motel TV is much more accurately tuned to my desktop monitor. I'm looking for a small (12-16 " or so) to carry in my computer bag when I travel.
    A brief monitor lexicon:

    LCD: liquid crystal display. Nearly all monitors are LCDs at this time. The LC serves as a light valve for a backlight.

    LED: light emitting diode backlight . (Older monitors used cold cathode fluorescent tubes). High efficiency, good colors, long life.

    (It's possible to buy Organic LED televisions, which do not use LC, but I'm not aware of any small PC monitors that are OLED.)

    TFT: thin film transistor. Displays that integrate an array of active components (transistors) with the LC elements. All LC monitors that I know of now use TFTs. There were passive displays, mainly used in laptops, more than 20 years ago. They gave really poor images. I doubt that there are any non-TFT monitors on the market these days.

    If you check Wikipedia, you'll find that the LCD displays in common use at the moment are TN (twisted nematic), VA (Vertcal Alignment), and IPS (in plane switching). IPS is supposed to be least sensitive to viewing angle changes, so it's probably what you want.

    I'm not current in what's available, but I found an example:

    http://www.newegg.com/Product/Produc...9SIA0V13PB0052

    It's a lot more expensive than a desktop monitor, but if you're looking for portability...
      My ComputerSystem Spec


 

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