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Hardware

LCD Overtaking CRT 317

prostoalex writes "IDC has a new report out, claiming that revenues for LCDs by the end of this year will top the CRT revenues. The only market not susceptible to the shift will be gaming and graphics-intensive applications, where the refresh rates of LCDs are not satisfactory yet."
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LCD Overtaking CRT

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  • by Anonymous Coward on Friday March 21, 2003 @01:15PM (#5565963)
    Burn out a pixel on the LCD's and you're stuck with a very annoying glitch.
  • Graphics Design (Score:5, Informative)

    by Keighvin ( 166133 ) on Friday March 21, 2003 @01:22PM (#5566043)
    In the graphics design realm it's rarely about refresh rates (unless you're working specifically with animation or motion media production). The color calibration just isn't there yet, the level threshold dropps off at the bottom (reducing the low luminosity contrast) and turns to glare far too low in the histogram (almost eliminating useful high-luminosity contrast).

    They're also sensitive to heat, both from the operating environment and duration of use causing further shifts in appreciable color and (perceived) refresh.

    OLED display's promise to eliminate the contrast and color calibration issues, but until those are more viable in cost and lifetime graphics design will still rely alost solely on CRT's.
  • by fruey ( 563914 ) on Friday March 21, 2003 @01:25PM (#5566075) Homepage Journal
    I've seen Linux run on LCDs. No problem. Now, Linux may not have a driver for your crazy digital out video card that runs to your LCD on the digital style cable, but if you have an analogue connector on your video card and LCD, then you'll have no problem.

    Digital video card support is limited, but it is there, AFAIK, in Linux.

  • Re:Makes sense (Score:5, Informative)

    by Pxtl ( 151020 ) on Friday March 21, 2003 @01:25PM (#5566077) Homepage
    While I agree with you (I only use an LCD because I won it in a draw) keep in mind that LCD screens of the same recorded dimension are actually larger then CRT's. LCD's are not larger then the viewable screen, while CRT's measure the total size of the picture tube, which is substantially larger then the viewable screen. Therefore, add at least an inch (2 is better) to the size of the LCD when comparing them to a CRT.

    That being said, I hate the lack of variable resolution on LCD's. Can't have everything, I guess.
  • by aksansai ( 56788 ) <aksansai@gm a i l .com> on Friday March 21, 2003 @01:26PM (#5566091)
    The performance and reliability of LCDs compared with CRTs is a big factor in bolstering revenue for the LCD market. Sure, LCD screens are more expensive - but the benefits of LCD screens over CRTs, in my opinion, are worth the additional money (savings in energy, ease of long-term viewing on the eyes, etc.)

    Many manufacturers guarantee their LCDs from burned out pixels with a pixel defect policy. The policies will differ as to the amount of defect will warrant a free replacement, and you should check to see the duration of terms of the policy prior to making a decision.

    In fact, Tom's Hardware Guide posted a recent article with regards to pixel displays. You can find the article here: http://www17.tomshardware.com/display/20030319/lcd _pixels-01.html
  • by tchuladdiass ( 174342 ) on Friday March 21, 2003 @01:27PM (#5566103) Homepage
    Check out tomshardware.com, they have an article on manufactures replacement policies for burned out pixels. Basically, the policies are all accross the board. Also, they make a distinction between an "unlit" pixel (black), and a "stuck" pixel (always on). Personally, I can put up with an unlit pixel at the edge of a screen, but I had a laptop once that had a couple of red pixels towards the middle, and it drove me bonkers.
  • Re:Graphics Design (Score:5, Informative)

    by Visigothe ( 3176 ) on Friday March 21, 2003 @01:30PM (#5566134) Homepage
    While what you say is true, it seems that there are some companies that are trying to do something about colour accuracy. Apple for instance sells SWAP certified LCDs. The monitors that are SWAP certified are *quite* good, and the technology will only improve, get cheaper, and trickle down to the smaller LCDs.

    I've proofed on one of the SWAP monitors, and *damn* Quite nice. Of course, all ouput is different, YMMV, etc.
  • Re:But... (Score:1, Informative)

    by labratuk ( 204918 ) on Friday March 21, 2003 @01:31PM (#5566142)
    Profit margins have no affect on revenues. Revenue is total money coming in. Profit is revenue minus costs.

    Oh. Ok. I'm an idiot.
  • My resolution gripe (Score:5, Informative)

    by swb ( 14022 ) on Friday March 21, 2003 @01:31PM (#5566150)
    ...with LCDs is that they're generally lower res at a given size than I'd run an equivilent-sized CRT at. In other words, I can crank a CRT to a higher display resolution than an LCD can.

    To get the res I'm used to on a 21" CRT (1920x1440), I need some $3k 24" LCD display.
  • Re:Why? (Score:2, Informative)

    by GeckoX ( 259575 ) on Friday March 21, 2003 @01:33PM (#5566170)
    It's not refresh rates that are important, it's the contrast and color settings. LCD's are totally inadequate for graphics design. Shift your eyes a couple of degrees while looking at an LCD screen and, whoa! all the colors and contrasting changes magically right before your very eyes! CRT's are extremely accurate and reliable with color, LCD's aren't even a little bit.
  • by Comrade Brightski ( 450221 ) <sabrig0@nOspaM.engr.uky.edu> on Friday March 21, 2003 @01:33PM (#5566171) Homepage
    "...where the refresh rates of LCDs are not satisfactory yet."

    I believe the poster is mistakenly trying to apply CRT terminology to LCDs. The refresh rate of a CRT, which is the number of times an image is painted on the screen per second, doesn't quite apply to LCDs. What does apply, however, is the response time. This is usually measured in ms and refers to the time period for a pixel to completely change its state. Response times are typically around 25 ms, but are often slower for black -> white transitions. Slow response gives the effect known as ghosting and makes these panels undesirable to gamers.

    As for the graphics artists, it's kind of a mixed bag. They get perfect geometries as a trade off for true color. Most modern LCDs operate at only 24 bit color.

    The office user/casual gamer makes up the vast majority of the population and won't notice any of these downfalls. Thus, despite the price, these things are selling like hotcakes due to the easiness on the eyes and uber-coolness. Besides, chicks dig em. ;)
  • by GiMP ( 10923 ) on Friday March 21, 2003 @01:34PM (#5566175)
    The issue is if your video card is supported, not if your monitor is supported. LCD monitors are certainly supported DVI or not. Of course, there may be some video cards for which the DVI output does not work; however, that is certainly not the fault of the monitor.
  • by Anonymous Coward on Friday March 21, 2003 @01:35PM (#5566196)
    Its not the refresh rates Try playing a FPS on most LCDs and watch it turn into a smeary mess. Good series of LCD reviews here at THG: LCD Comparison [tomshardware.com] Out of 17 LCDs reviewed only the best one got a 4/5 in "suitabilty for gaming" and even then they said it was not acceptable for fast motion scenes(FPS).
  • small review. (Score:3, Informative)

    by GiMP ( 10923 ) on Friday March 21, 2003 @01:46PM (#5566301)
    The new 16ms response time LCDs are great for gaming. I bought the new NEC LCD1760NX-BK (black) LCD monitor last month.

    The monitor's 16ms response time is good for gaming and much better than the 17" Dell 1702FP (40ms) which I had returned.

    There is also much less color banding with the NEC compared to the Dell; however, some color banding is still visible, most notably with my digital photgraphs. Additionally, the colors seem to be off slightly, with colors veering towards blue.

    I do not consider the color-issues major as it is only a slight problem and I am not a graphic artist for which it would be a MAJOR problem. I would not buy this monitor if colors were terribly important.

    The biggest complaint I have is that there appears to be a small vertical spacing between pixels. This results in a very faint, but disturbing, 'striped' effect. I find it highly distrubing in applications and especially while viewing photographs. I do manage to forget about it occasionally. I never notice it during games.

    The NEC is a great monitor for gaming, but nothing else.
  • by Xerithane ( 13482 ) <xerithane@@@nerdfarm...org> on Friday March 21, 2003 @01:49PM (#5566333) Homepage Journal
    The issue is if your video card is supported, not if your monitor is supported. LCD monitors are certainly supported DVI or not. Of course, there may be some video cards for which the DVI output does not work; however, that is certainly not the fault of the monitor.

    Be weary of the Intel i845. Integrated chip, has horrible problems. Better support in 2.6 when it gets released, but for now you can get the DVI running. No sound or anything.

    If you do get a system with an i845 in it, go immediately to Intels site and search their knowledge base. Or use google and do the same.
  • by Erisynne ( 10654 ) on Friday March 21, 2003 @01:50PM (#5566348) Homepage
    LCDs don't last very long, comparatively speaking: backlights fade at an alarming rate (noticable within 18 months to 2-3 years, depending on the screen), and the colors can fade. A CRT of comparable price will easily outlive an LCD by 2-3 times -- a good CRT will last 10 years without reduction in quality, minimum.

    So not only are they not as bright, not as contrasty, and not color-accurate, with limited viewing angles and severely constricted color gamut, they wear out quickly and cost much more!

    The Age of LCDs is not here yet. But let's hope that misguided reports like this spur more development of better, competing technologies :)
  • Re:Makes sense (Score:3, Informative)

    by Cy Guy ( 56083 ) on Friday March 21, 2003 @01:52PM (#5566374) Homepage Journal
    I'd love to have one, but for the 800 bucks I'd shell out for a decent 15" LCD...

    $800? You can get a SONY SDM-M51 15.1" Monitor for $335 [amazon.com], and their "professional quality" Sony SDMX52 15" Flat Panel LCD (with additional input jack for DVI-D, and integrated speakers) is around $379 after rebate [amazon.com].

    If you've got $800 to spend you could one of SONY's higher end 18" LCD monitors such as the Sony SDMX82 18" Flat Panel LCD (also with additional input jack for DVI-D, and integrated speakers) which is only $737 after rebate [amazon.com].

    Where do you shop that you pay List Price on electronics?

  • Re:refresh rates (Score:5, Informative)

    by redgren ( 183312 ) on Friday March 21, 2003 @01:59PM (#5566510) Journal
    Refresh rates don't make sense on an LCD... The parameter you need to look at is the Rise/Fall time of the pixels (also known as response time). The pixels don't change unless they need to, whereas for CRTs, every pixel on the screen is being redrawn (60 times a second at 60Hz, obviously)

    The response times are getting faster and cheaper, but still leave a bit to be desired.

    The total response time of a pixel can be (typically) anywhere from 15ms to 40ms for an LCD monitor. Most are between 25 and 35. 30ms response time is pretty much average. If the whole screen is changing quickly (think fast FPS gaming), you would only be getting the equivalant of 33Hz or so. At 15ms (for considerably more $$), you are looking at an analogous 66Hz refresh.

    Most of the hardcore gamers I know don't like less than 85Hz on their CRTs, so still lots of room for improvement on the LCDs.
  • Re:Makes sense (Score:3, Informative)

    by kisrael ( 134664 ) on Friday March 21, 2003 @02:17PM (#5566828) Homepage
    That being said, I hate the lack of variable resolution on LCD's. Can't have everything, I guess.

    If you're a videophile, it's probably not good enough, but personally I've been very impressed with newer LCDs' ability to support various resolutions by something resembling on-the-fly "resize" in Photoshop...my wife's 2000 laptop has that awful double-some-pixels effect, but my "Cornea" desktop LCD and my Dell laptop handle it pretty gracefully. (Good thing to...the Dell with its 1600x1200 laptop screen is too fine a resolution for my eyes to deal with, but makes the lower resolutions look almost native.)
  • Re:Makes sense (Score:4, Informative)

    by niko9 ( 315647 ) on Friday March 21, 2003 @02:40PM (#5567197)
    Check out IBM's new L200p 21" LCD. 1600x1200 native, 400:1 brightness, and only 1349 USD w/ 3yr warranty.

    This baby just came out last week.

  • Re:refresh rates (Score:5, Informative)

    by CTho9305 ( 264265 ) on Friday March 21, 2003 @03:00PM (#5567492) Homepage
    The 85Hz on a CRT is different. This is because the CRT flickers - and many people can perceive this flicker at 60Hz. However, 60fps is as smooth as it gets. An LCD has a constant light, so it doesn't flicker. All you need is 60 updates per second to redraw all the pixels, and then you get a smooth, flicker-free image.
  • by Junks Jerzey ( 54586 ) on Friday March 21, 2003 @03:03PM (#5567529)
    You can get a 17" LCD from Hitachi with a 12ms refresh rate. At 60fps, 1 frame is 16.67ms, so this is good enough.
  • Re:CRT Disposal (Score:3, Informative)

    by pclminion ( 145572 ) on Friday March 21, 2003 @03:17PM (#5567736)
    You are probably better off disassembling the CRTs and selling the individual parts. The flyback transformers in particular are sought after by hobbyists.

    Of course, disassembling a CRT is just as dangerous as a television. There are capacitors charged to many kilovolts, which maintain this charge long after being turned off. You can easily be killed working inside a CRT. But if you know how to safely take it apart you might be able to make a few bucks selling the pieces.

  • by SensitiveMale ( 155605 ) on Friday March 21, 2003 @03:57PM (#5568263)
    I rarely move my monitor. Actually never.

    If you like a high refresh rate then you will LOVE an LCD. As much as you don't want to hear it, and LCD is MUCH better on your eyes mainly because of the refresh rate. Because if a pixel doesn't change color, then the refresh rate is infinitely fast. That is why LCDs shouldbe set at a refresh rate of 60 Hz. No more headaches for you. EVER.

    And I have yet to see any ghosting on my Dell FP2000 or my sgi 1600SW. Cheap LCDs may ghost though.

    I'm sure brightness is the same or close to a CRT, but picture geometry can't come close. On my LCD every line is PERFECTLY straight. No CRT can claim that. And 2 years from now, every line will still be perfectly straight.

    Other nice things include 4 inputs on my FP2000; DVI, analog, S-video, composite. And I can watch the S-video or composite signals for Picture in Picture inside the DVI or analog screen. Very nice.

    About the only thing CRTs have over LCDs in color trueness. But LCDs are catching up fast and this really only applies to graphic designers who need to use perfectly color calibrated monitors.

    Still kinda funny you said not to mention 'better eye sight' and 'I get a headache' in the same sentence.
  • by captaineo ( 87164 ) on Friday March 21, 2003 @04:12PM (#5568455)
    Low- and mid-range CRTs aren't usually capable of resolving pixels at their maximum rated resolution, whereas LCDs by definition always draw perfect pixels at their nominal resolution. (even my top-of-the-line 21" Sony CRT works great at 1280x1024 but the pixels go to fuzz at 1600x1200).

    From a signal-processing standpoint, it might actually be preferable to have pixels drawn as overlapping blobs rather than perfect squares, but squares will always look sharper to most viewers than blobs.
  • by SirTwitchALot ( 576315 ) on Friday March 21, 2003 @04:40PM (#5568777) Homepage Journal
    Not terribly difficult,

    If something (a speck of dust perhaps) was blocking the aperature grille, the electron beam would never reach the Phosphor to illuminate it. Dirty manufacturing facilities could be to blame. You don't see this often because manufacturers check for this sort of thing, and don't generally let defective CRT's leave the factory.
  • by Junta ( 36770 ) on Friday March 21, 2003 @04:42PM (#5568795)
    But from using, I can guess why. With CRT, there is no harm in allowing both high and low resolutions, the lower resolutions are not impacted quality wise just because the monitor can go really high. With LCD displays, it is a much different story, anything smaller than the LCD native resolution will be scaled by the monitor (or shrunk to a smaller area) by some digital scaling technique. While you can have some pretty effective techniques with digital scaling, anything with detail (i.e. text) is a bit distorted and strange looking no matter the technique used. Thus, there is a greater emphasis on having a resolution that would look the best to the most amount of people. Add to this that dead pixels become much more of a problem as the resolution increases (probability increases, and even at 1920x1440 a dead pixel is noticeable), not to mention cost is more directly impacted by the pixel count.
  • by rabidcow ( 209019 ) on Friday March 21, 2003 @05:05PM (#5569066) Homepage
    Technically, LCD displays don't have a refresh rate, but they do have a maximum change rate which is effectively the same thing in this case.

    On an LCD:
    1 / (response time) = maximum frame rate

    Whereas on a CRT:
    refresh rate = maximum frame rate

    So you can loosely compare refresh rate to the inverse of the response time.

    Most modern LCDs operate at only 24 bit color.

    How many video cards can put out more than 8 bits per primary? Only really high-end graphics people are going to care about that anyway, the gamut is probably much more important.
  • by Eccles ( 932 ) on Friday March 21, 2003 @06:08PM (#5569813) Journal
    So how can something be 60 cycles a second and infinite cycles a second at the same time?

    LCDs have no scanning beam. If you were hyperfast, you would notice that the pixels on your monitor get very bright as the cathode ray hits them, then fade away over time. This is why you can see flicker at low refresh rates. But like watching a movie, you don't see the refreshes, you see a moving image.

    With an LCD, the backlight is constantly on. LCD pixels don't have the surge in brightness, they stay a uniform color. When the signal says change color, it transitions to the new color. The time it takes to change can be significant, thus limiting the "refresh" rate of the LCD -- really, the maximum change rate -- and causing ghosting, as pixels retain some of their old color longer than they should.
  • by kableh ( 155146 ) on Friday March 21, 2003 @06:54PM (#5570231) Homepage
    Uh, no, just that LCDs are a completely different tech from CRTs. Every pixel has a transistor driving it, and if that transistor dies, or stays on, you have a dead pixel. This contrasts with CRTs, which have an electron gun that scans the monitor. Some monitors have a grill that said beam passes through, thus if a hole in the grill gets clogged that pixel is dead.
  • by adolf ( 21054 ) <flodadolf@gmail.com> on Saturday March 22, 2003 @01:09AM (#5572504) Journal
    Modern TVs have a service mode, which you'll be able to access on your model after a bit of googling (hint: try Usenet, too) for instructions.

    On a JVC TV I had, I just had to simutaneously press two buttons ("Display" and "Video Status", IIRC) on the remote to produce a nice color menu of the plethora of configurable shit present in a recent TV. Geometry controls (is this what you're after when you speak of "overscan"?) are just the tip of the iceberg.

    Sony TVs require a certain sequence of button-presses to be completed in a certain amount of time, as another example. Their menu is usually not quite as pretty as JVCs.

    And I dare say that such features are nearly ubiquitous. The very cheap 19" Sanyo that I've got in the bedroom has a rather expansive array of configurable settings.

    The potentiometers may be gone, but the software is there. You just have to find it... (and get a new more-clued repair shop, while you're at it.)

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