LCD's or CRT's which is better RRS feed

  • Question

  • so what do u think guys.LCD's or CRTs.also which are the bestLCD's and best CRT's in market right now.
    Wednesday, February 21, 2007 12:58 AM

All replies

  • Of course... LCD is best
    Wednesday, February 21, 2007 1:28 AM
  • There is no flicker on an LCD display because, while a CRT must be refreshed, the LCD has a constant source of light over the whole screen. Once a pixel is on, it stays on until turned off.

    In a CRT, the electron beam is circular when aimed directly forward, but becomes distorted when aimed up, down, left or right as it sweeps across the screen and may cause image clarity or focus issues at the screen edge.

    In contrast, an LCD has millions of pixels, each one effectively independent from its neighbor, with no scanning electron beam, so distortion problems are negligible. The image is always perfectly "focused" over the entire screen.


    The only item that ages on an LCD monitor is the backlight, which is composed of one or more tiny fluorescent tubes. The typical life of a backlight is 50,000 hours to the half brightness point-the point at which brightness is one-half of the original brightness, and the industry standard measure for product life.

    A CRT ages in two ways: An oxide layer forms on the cathode of the electron gun, decreasing beam current; and the phosphor ages and becomes less efficient. The typical CRT half-brightness point occurs between 10,000 and 20,000 hours.


    The power required to run an LCD is about one-third of that required for a CRT with the same screen area. In addition, the amount of heat generated by an LCD monitor is considerably less than a CRT monitor, resulting in a lower load on air conditioning. Building cooling needs may be decreased by up to 20%.

    And, if an LCD monitor is used with an uninterruptible power supply, the lower power required provides precious extra minutes to store critical data and shut down gracefully in the event of a power failure.

    Looking at all the above you can decide for Yourself which is better offcourse LCD right.i suggest you buy a LCD....

    You cannot single out one regarding which one to buy.....Just do some research and find it out yourself



    Wednesday, February 21, 2007 2:07 AM
  • LCD is better than CRT....

    Following points will throw light on many aspects an to know which type has an advantage over the other............


    Aesthetics: LCD monitors are aesthetically very pleasing to the eye being slim and stylish. There is no comparison with the CRT here. The current breed of LCD monitors has excellent colour combinations, and neat looking control panels. The weight of the LCD monitors is roughly 6-8 lbs for 15 inch models and slightly more for the 17 inch ones. Since it is very light it can be handled very comfortably even by a lady. Some manufacturers have come up with an outboard power supply thus reducing the thickness of the panel which now can be had at less than an inch!


    Angle of view: Although the CRT monitors lead the way in this department, the viewing angle on LCD monitors is getting wider and wider and current models offer over 160 degrees. For all practical purposes that is more than sufficient for any user. Therefore the angle of view is not a major concern anymore as it used to be when LCD monitors initially emerged in the marketplace.


    Colour Purity: This is where the CRT monitors take a clear advantage. However the best LCD monitors are very good and for an average user the difference is hardly noticeable in side by side comparison. The difference can vary from slight to significant depending on the quality of the LCD monitor used in comparison.


    Contrast: Traditionally the CRT monitors always had better contrast and LCD monitors were lagging behind. Recently some of the best LCD monitors have come very close and according to some they match what the CRT is capable of in terms of contrast. This aspect of the monitor helps in correct tonal characteristics in low light situations. A high contrast monitor is likely to produce black as black rather than dark grey. High contrast is most important for gaming and movie playback.


    Dead Pixels: What are Dead Pixels? Dead Pixels are simply pixels on the LCD monitors that do not function. Dead Pixels are not repairable hence they stay there for good. Dead Pixels can easily be identified in programs with white background; you can spot them in the same place every time you switch on your system. In the early days the issue of dead pixels on LCD monitors was a big one confronting most of the manufacturers, however, the manufacturing practices have greatly improved over time and dead pixel issue is very much controlled based on the experience gained. Still many manufacturers themselves are confused as to the Warranty Policies they need to enact for replacement of those monitors with dead pixels. The top manufacturers have no problem replacing the monitor within the warranty period. So when shopping for an LCD monitor check the dead pixel policy indicated in the warranty. Also check for dead pixels once you install it in your system. If you spot a dead pixel within the warranty period get a replacement.


    Energy Requirements: LCD monitors are extremely economical when it comes to power consumption. Their consumption is in the region of 25 -50 watts compared to CRT which consume like 60-80 watts for a 15 inch model to almost 70 to 150 for 17 and 19 inch models.


    Image Brightness: LCD Monitors win hands down in this department. They offer almost twice the brightness compared to the CRT monitor. If you use the system in a brightly lit room or with plenty of sunshine coming through the window LCD is the best choice.


    Magnetic Interference: Again the CRT looses out in this department too. LCD monitors are not affected by the magnetic interference at all. Many of the LCD monitors come with stereo speakers built-in and need not be shielded for magnetic interference. Shielding the speakers makes them very costly, thus the savings can be either passed on to the consumer or spent by manufacturer elsewhere in a more effective way.


    Response Time: As mentioned in the beginning of this article the response time of the LCD monitor is crucial for the gamers and movie buffs. Response time refers to updating of the pixel colours. Ghosting or trailing effects start to become evident when the response time slows down to 20 ms. One should definitely look for monitors offering 16ms or even 12 ms response time. We may even see monitors in near future with response times in single digits!


    Screen Flicker: One of the most annoying things on the CRT monitor which we all had to suffer was the flickering effect, in other words the low refresh rates. This contributed towards headaches which users experienced on a daily basis. This aspect was also responsible for lower productivity. CRT does not have an advantage when it comes to the flickering effect. By default windows always sets the refresh rate at 60 Hz, until you install your monitor and it detects the configuration file and sets the refresh rate based on factory setting of the monitor in question. The VESA standard states that the minimum refresh rate to avoid eye strain is 72 Hz. Some of the good CRT monitors can go much higher. Ideally a refresh rate of 85 Hz should be OK for most people using 17 inch monitors. Due to difference in technology the LCD Monitors are clear winners as refresh rate is not an issue with them. Normally you get a choice of two different refresh rates on the LCD monitor but it is best to go with the recommendations of the manufacturer.

    I hope this article will help you...

    Wednesday, February 21, 2007 4:30 AM
  • Thts what i was saying...go for LCD
    Wednesday, February 21, 2007 8:44 AM