difference between tft lcd and crt manufacturer

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The recent surge in thin-film transistor (TFT) technology, specifically for the TFT LCD display, is making CRT (cathode ray tube) monitors a thing of the past. In fact, TFT display is being used in almost all LCD monitors these days, most notably in computers and televisions.

It owes its popularity to its ability to refresh the screen quicker than a CRT, thanks to the fact that its small transistors require such a tiny charge to engage. Aside from this, TFT displays boast other advantages that give ample reason for manufacturers and businesses to widely use it in their digital products.

Because TFT displays are handy, these can easily be transferred, moved around, and installed. It can also be mounted, freeing up space that can be used for other equipment or tasks. This makes TFT monitors a perfect choice for creating a functional workstation. With this technology, businesses can maximize the use of their workspace by keeping unwieldy monitors out of the way.

If you’re worried about ballooning energy bills, a TFT monitor can help lower them. Since it uses pixels to display images, it uses less energy than CRT monitors. In fact, you can save up to 78% in energy use when you use a TFT monitor.

Say goodbye to blur with a TFT module. It uses a flat matrix display in which all pixels remain active, thus eliminating flickers. There are also no geometric distortions to worry about, unlike a CRT screen that tends to obscure images because it electronically focuses on the image from the inside while displaying it from the rear.

Because it’s flicker-free, you can ensure a sharp visual from a TFT-module monitor, which helps avoid physical symptoms of overexposure to computers or televisions. It does not create strain on the eyes, nausea, or headaches.

Thin-film transistor (TFT) modules are ideal for graphic artists, web designers, photographers, and other media types who require two monitors simultaneously to do their work. Moreover, TFT modules enable dual monitor configurations. All your computer needs is a video card or a couple of monitor connections.

Because of these advantages, the TFT LCD display has gained prominence among many industries. Understanding how it works and how it can help promote your business will help you engage it based on your specific needs.

CRT stands for Cathode Ray Tube and LCD stands for Liquid Crystal Display area unit the kinds of display devices wherever CRT is employed as standard display devices whereas LCD is more modern technology. These area unit primarily differentiated supported the fabric they’re made from and dealing mechanism, however, each area unit alleged to perform identical perform of providing a visible variety of electronic media. Here, the crucial operational distinction is that the CRT integrates the 2 processes lightweight generation and lightweight modulation and it’s additionally managed by one set of elements. Conversely, the LCD isolates the 2 processes kind one another that’s lightweight generation and modulation.

Since the production of cathode ray tubes has essentially halted due to the cost and environmental concerns, CRT-based monitors are considered an outdated technology. All laptops and most desktop computer systems sold today come with LCD monitors. However, there are a few reasons why you might still prefer CRT over LCD displays.

While CRT monitors provide better color clarity and depth, the fact that manufacturers rarely make them anymore makes CRTs an unwise choice. LCD monitors are the current standard with several options. LCD monitors are smaller in size and easier to handle. Plus, you can buy LCD monitors in a variety of sizes, so customizing your desktop without all the clutter is easy.

The primary advantage that CRT monitors hold over LCDs is color rendering. The contrast ratios and depths of colors displayed on CRT monitors are better than what an LCD can render. For this reason, some graphic designers use expensive and large CRT monitors for their work. On the downside, the color quality degrades over time as the phosphors in the tube break down.

Another advantage that CRT monitors hold over LCD screens is the ability to easily scale to various resolutions. By adjusting the electron beam in the tube, the screen can be adjusted downward to lower resolutions while keeping the picture clarity intact. This capability is known as multisync.

The biggest disadvantage of CRT monitors is the size and weight of the tubes. An equivalently sized LCD monitor can be 80% smaller in total mass. The larger the screen, the bigger the size difference. CRT monitors also consume more energy and generate more heat than LCD monitors.

For the most vibrant and rich colors, CRTs are hard to beat if you have the desk space and don"t mind the excessive weight. However, with CRTs becoming a thing of the past, you may have to revisit the LCD monitor.

The biggest advantage of LCD monitors is the size and weight. LCD screens also tend to produce less eye fatigue. The constant light barrage and scan lines of a CRT tube can cause strain on heavy computer users. The lower intensity of the LCD monitors coupled with the constant screen display of pixels being on or off is easier on the eyes. That said, some people have issues with the fluorescent backlights used in some LCD displays.

The most notable disadvantage to LCD screens is the fixed resolution. An LCD screen can only display the number of pixels in its matrix. Therefore, it can display a lower resolution in one of two ways: using only a fraction of the total pixels on the display, or through extrapolation. Extrapolation blends multiple pixels together to simulate a single smaller pixel, which often leads to a blurry or fuzzy picture.

For those who are on a computer for hours, an LCD can be an enemy. With the tendency to cause eye fatigue, computer users must be aware of how long they stare at an LCD monitor. While LCD technology is continually improving, using techniques to limit the amount of time you look at a screen alleviates some of that fatigue.

Significant improvements have been made to LCD monitors over the years. Still, CRT monitors provide greater color clarity, faster response times, and wider flexibility for video playback in various resolutions. Nonetheless, LCDs will remain the standard since these monitors are easier to manufacture and transport. Most users find LCD displays to be perfectly suitable, so CRT monitors are only necessary for those interested in digital art and graphic design.

The short name of TFT:Thin Film Transistor in Chinese. What is the difference between TFT and LCD? Our laptops and desktops now use relatively advanced TFT displays, which consist of LCD pixels and are powered by thin-film transistors integrated behind the pixels. Therefore, the TFT type display screen also belongs to a class of display devices with a source matrix.

TFT type display screen is currently a better LCD color display, TFT type display has many advantages: high responsiveness, high brightness, high contrast, and so on.TFT displays are closest to CRT displays. The TFT screen also often appears on the screen of each big mobile phone, there are 65536 colors, 160,000 colors, 16 million colors three, its display effect is also very good.

TFT means that every LCD pixel on an LCD is driven by a thin-film transistor integrated behind it. Thus can achieve high speed, high brightness, high contrast display screen information, TFT-LCD(thin-film transistor liquid crystal display) is one of the majority of LIQUID crystal displays.

Liquid Crystal Display (LCD). The structure of the LCD is placed in the middle of the two pieces of parallel glass liquid crystal box, the substrate glass set on TFT (thin-film transistor), set the color filter substrate glass on, on the TFT signal, and the voltage change to control the rotation direction of the liquid crystal molecules, so as to achieve control of each pixel display emergent polarized light or not and to achieve. Now THAT LCD has replaced CRT as the mainstream, the price has dropped a lot and become widely available.

The TFT(Thin Film Field-effect Transistor) is a video in which every single pixel in the liquid crystal display is actuated by a Thin Film Transistor embedded in the rear. Thus can achieve high speed, high brightness, high contrast display screen information.

Color screens of mobile phones vary depending on LCD quality and research and development technology. The types of color screens include STN (CSTN), TFT(LTPS), TFD, UFB, and OLED.

Liquid Crystal Display (LCD). Generally divided into monochrome and color LCD two kinds, the current monochrome LCD has almost out of the notebook computer market, and color LCD still continues to develop. The color LCD can be divided into two types: STN and TFT. The TFT(Thin Film Transistorized)LCD, also known as the active transistorized Transistor LIQUID crystal display (LCD), is the true-color LIQUID crystal display that many people describe as the Thin Film Transistor.DSTN (Dual Scan Twisted Nematic)LCD, namely double scan LIQUID crystal display. It is a display mode of STN LCD, which is no longer on the market.

What is the difference between TFT and LCD? Read here I believe you have a general understanding and cognition of TFT and LCD, LCD refers to liquid crystal display, TFT is a kind of LCD. The former is for laptops and the latter is for desktop computers. There are several different technologies for LCD, FED, PDP, OLED, TFT-LCD, they are all LCD. Only the desktop with several fronts more, lower cost, TFT technology cost is higher, generally used for notebook, or MOTO, etc., now most of the display is TFT type display, I believe we will pay more attention to the choice and purchase of digital goods.

What are the differences between CRT and LCD? CRT and LCD are both monitors we know well, but what are the differences between them? Let"s find out together:

2.LCD: The structure of LCD is to place a liquid crystal cell between two parallel glass substrates, a TFT (thin film transistor) is arranged on the lower substrate glass, and a color filter is arranged on the upper substrate glass.

1. CRT display: CRT displays display images by exciting phosphors on the inner surface of the screen by electron beams. Since the phosphors are lit and then quickly extinguished, the electron gun must continually cycle to excite the dots.

2.LCD: By changing the signal and voltage on the TFT to control the rotation direction of the liquid crystal molecules, so as to control the polarized light emission of each pixel or not, to achieve the purpose of display.

What are the differences between CRT and LCD? The above are the differences between CRT and LCD. And LCD is gradually replacing CRT as the mainstream trend of the market.

No native resolution. Currently, the only display technology capable of multi-syncing (displaying different resolutions and refresh rates without the need for scaling).Display lag is extremely low due to its nature, which does not have the ability to store image data before output, unlike LCDs, plasma displays and OLED displays.

The TFT LCD monitor is a flat and ultra-thin display device, composed of a certain number of colors or black and white pixels, which are placed in front of the light source or the reflective surface. LCD displays are favored by engineers because of their low power consumption and are suitable for electronic devices that run on batteries. Its main working principle is to stimulate the liquid crystal molecules to generate dots, lines and surfaces with the back light tube to form a picture.

Traditional CRT monitors use picture tube technology for imaging, so they need a built-in vacuum picture tube and an electron gun at the end, so that the length is generally more than 30 cm, and the volume of the entire display is larger. The uart display TFT LCD uses liquid crystal material, and then applies the corresponding imaging technology to display, without installing a picture tube inside the display, so that the volume is small.

The traditional CRT display is limited by display technology, and its size is smaller than the display area of the fluorescent screen. However, due to the different imaging principles of liquid crystal displays, the marked size is the actual display area.

The CRT display adopts cathode picture tube imaging. The electron beam contained in it will generate a lot of static electricity and radiation during operation, and the faster the electron beam runs, the greater the radiation. Long-term use will cause damage to the eyes and skin, such as eye myopia, skin allergies and other problems. However, because the LCD display uses liquid crystal material, it does not need to use electron beams when working, so there are no problems of static electricity and radiation that affect vision. In addition, the formation of a picture of the CRT display is formed by scanning, and only when the scanning frequency reaches a certain value, there is no flicker, while the TFT LCD display display does not need the scanning process, and a picture is formed almost at the same time, even if the refreshed frequency is very low, there is no flicker at all.

In addition to the power consumption of the circuit and the picture tube, the CRT display also has the power consumption of the display screen, while the tft lcd power consumption is mainly on the backlight and the circuit, and the power consumption of the display screen can be ignored. In addition, because the liquid crystal display does not use a picture tube and an electron gun for imaging like a CRT display, it does not need to consider the high radiation effect caused by increasing the electron beam emitted by the electron gun, but only obtains the brightness through the backlight emitted by the fluorescent tube. Therefore, it has a stronger anti-interference ability, and even in an environment with concentrated light, it will present a good display effect.

The traditional CRT monitor mostly adopts the analog display mode, and the displayed signal output adopts the analog output mode, which may cause the loss of the image during the transmission process, resulting in the decline of the picture quality. Outputting digital signals will not cause signal loss, but at present, most LCD monitors still use VGA interfaces for analog monitors, and only a few manufacturers have set up digital video signal interfaces.

Due to the different materials and technologies used in TFT liquid crystal displays, some of its parameters are generally relatively fixed, which requires more intelligent performance adjustment of the display. In this regard, each manufacturer has its own mature technology.

The traditional CRT display uses an ultra-thick glass display. Although the outer surface is as flat as the liquid crystal display, the inner surface is somewhat curved, which looks like a concave, and the image will be slightly distorted. The basic material used in liquid crystal displays is liquid crystal - a substance that has both the fluidity of liquids and the regular arrangement of crystals. When the liquid crystal is heated to a certain extent, it will become a transparent liquid. After cooling, it will show the characteristics of a crystal. Because the state of liquid crystal are between solid and liquid, it not only has the optical characteristics of solid crystal, but also has the flow characteristics of liquid. The liquid crystal display uses its characteristics to display.

I have not found this site useful. I came here looking to find out what a TFT was. Instead there"s just too much jargon on here. this only helps those who have an idea of what computers are and not the everyday person who does not know the difference between a CLI and a GUI.

i have bought a new TFT monitor. My problem is that the screen suddenly disappears and for a moment the screen is blank. But then it comes again and is working properly. When i typed this post it happened twice in the span of just a minute. Please do explain it to me.

What would be the power consumption of a standard TFT monitor and a digital monitor? How much would I be able to save on electricity consumption unit wise?

I love your article. It provided me very good information on TFT Monitors. It is good to know that the TFT Monitors consist of separate transistors for Separate Dot Pixel. Even in my cousin"s home on his LCD he got 2 black dots. I think it is dead transistors. So this is not good if some transistor fail it will corrupt whole display. What is the solution for this?

What would be the power consumption of a standard TFT monitor and a digital monitor? How much would i be able to save on Electricity consumption unit wise?

i have +2.5 power so it becomes very difficult for me to sit in front of computer regularly for seven to nine hours. is there any tft monitor on which i can sit regularly for more than ten hours? due to this reason i resigned three previous jobs.

I have a 17" drop down TFT monitor that I installed in my boat. It starts up fine, but after about two or three minutes, the picture freezes and then the unit turns its self off. Any idea what might be wrong with it?

i have bought new TFT monitor. My problem is that the screen suddenly disappears and for a moment screen is blank. But then it comes again and is working properly. When i typed this post it happened twice in the span of just a minute. Please do explain it to me.

In market, LCD means passive matrix LCDs which increase TN (Twisted Nematic), STN (Super Twisted Nematic), or FSTN (Film Compensated STN) LCD Displays. It is a kind of earliest and lowest cost display technology.

LCD screens are still found in the market of low cost watches, calculators, clocks, utility meters etc. because of its advantages of low cost, fast response time (speed), wide temperature range,  low power consumption, sunlight readable with transflective or reflective polarizers etc.  Most of them are monochrome LCD display and belong to passive-matrix LCDs.

TFT LCDs have capacitors and transistors. These are the two elements that play a key part in ensuring that the TFT display monitor functions by using a very small amount of energy without running out of operation.

Normally, we say TFT LCD panels or TFT screens, we mean they are TN (Twisted Nematic) Type TFT displays or TN panels, or TN screen technology. TFT is active-matrix LCDs, it is a kind of LCD technologies.

TFT has wider viewing angles, better contrast ratio than TN displays. TFT display technologies have been widely used for computer monitors, laptops, medical monitors, industrial monitors, ATM, point of sales etc.

Actually, IPS technology is a kind of TFT display with thin film transistors for individual pixels. But IPS displays have superior high contrast, wide viewing angle, color reproduction, image quality etc. IPS screens have been found in high-end applications, like Apple iPhones, iPads, Samsung mobile phones, more expensive LCD monitors etc.

Both TFT LCD displays and IPS LCD displays are active matrix displays, neither of them can produce color, there is a layer of RGB (red, green, blue) color filter in each LCD pixels to make LCD showing colors. If you use a magnifier to see your monitor, you will see RGB color. With switch on/off and different level of brightness RGB, we can get many colors.

Neither of them can’t release color themselves, they have relied on extra light source in order to display. LED backlights are usually be together with them in the display modules as the light sources. Besides, both TFT screens and IPS screens are transmissive, it will need more power or more expensive than passive matrix LCD screens to be seen under sunlight.  IPS screens transmittance is lower than TFT screens, more power is needed for IPS LCD display.

TFT (Thin Film Transistor) LCD (Liquid Crystal Display) dominates the world flat panel display market now. Thanks for its low cost, sharp colors, acceptable view angles, low power consumption, manufacturing friendly design, slim physical structure etc., it has driven CRT(Cathode-Ray Tube) VFD ( Vacuum Fluorescent Display) out of market, squeezed LED (Light Emitting Diode) displays only to large size display area. TFT LCD displays find wide applications in TV, computer monitors, medical, appliance, automotive, kiosk, POS terminals, low end mobile phones, marine, aerospace, industrial meters, smart homes, handheld devices, video game systems, projectors, consumer electronic products, advertisement etc. For more information about TFT displays, please visit our knowledge base.

What we are talking about TFT LCD, it is a LCD that uses TFT technology to improve image qualities such as addressability and contrast. A TFT LCD is an active matrix LCD, in contrast to passive matrix LCDs or simple, direct-driven LCDs with a few segments without TFT in each pixel.

The TN type TFT LCD display is one of the oldest and lowest cost type of LCD display technology. TN TFT LCD displays have the advantages of fast response times, but its main advantages are poor color reproduction and narrow viewing angles. Colors will shift with the viewing angle. To make things worse, it has a viewing angle with gray scale inversion issue. Scientist and engineers took great effort trying to resolve the main genetic issues. Now, TN displays can look significantly better than older TN displays from decades earlier, but overall TN TFT LCD display has inferior viewing angles and poor color in comparison to other TFT LCD technologies.

IPS TFT LCD display was developed by Hitachi Ltd. in 1996 to improve on the poor viewing angle and the poor color reproduction of TN panels. Its name comes from its in-cell twist/switch difference compared with TN LCD panels.The liquid crystal molecules move parallel to the panel plane instead of perpendicular to it. This change reduces the amount of light scattering in the matrix, which gives IPS its characteristic of much improved wide viewing angles and color reproduction. But IPS TFT display has the disadvantages of lower panel transmission rate and higher production cost compared withTN type TFT displays, but these flaws can’t prevent it to be used in high end display applications which need superior color, contrast, viewing angle and crispy images.

The mono-domain VA technology is widely used for monochrome LCD displays to provide pure black background and better contrast, its uniformly alignment of the liquid crystal molecules makes the brightness changing with the viewing angle.

MVA solves this problem by causing the liquid crystal molecules to have more than one direction on a single pixel. This is done by dividing the pixel into two or four regions – called domains – and by using protrusions on the glass surfaces to pretilt the liquid crystal molecules in the different directions. In this way, the brightness of the LCD display can be made to appear uniform over a wide range of viewing angles.

This is an LCD technology derived from the IPS by Boe-Hydis of Korea. Known as fringe field switching (FFS) until 2003, advanced fringe field switching is a technology similar to IPS offering superior performance and color gamut with high luminosity. Color shift and deviation caused by light leakage is corrected by optimizing the white gamut, which also enhances white/grey reproduction. AFFS is developed by Hydis Technologies Co., Ltd, Korea (formally Hyundai Electronics, LCD Task Force).

The AFFS is similar to the IPS in concept; both align the crystal molecules in a parallel-to-substrate manner, improving viewing angles. However, the AFFS is more advanced and can better optimize power consumption. Most notably, AFFS has high transmittance, meaning that less of the light energy is absorbed within the liquid crystal layer and more is transmitted towards the surface. IPS TFT LCDs typically have lower transmittances, hence the need for the brighter backlight. This transmittance difference is rooted in the AFFS’s compact, maximized active cell space beneath each pixel.

The Cathode Ray Tube (CRT) has been the standard for PCs from the start - from the ancient, tiny green screens to today�s high powered 20" + SVGA behemoths. However, while the image quality of CRT"s has continued to improve, there are other areas that are still a concern: mainly power consumption, physical size and radiation emissions. Thanks to standards like TCO"95, the issues of power consumption and emissions are being addressed. These standards are evolving as quickly as the technology. The issue of size, though, has not been as easy to overcome. In fact, as monitor prices continue to fall, users are purchasing larger and larger monitors. The downside of this new purchasing power is that these big monitors consume an immense amount of the space on your desk.

There is a solution that addresses all three of the concerns listed above: Thin Film Transistor Liquid Crystal Display (TFT LCD). These types of computer monitors are compact and yet meet the strictest of standards imposed on today"s VDU�s (Visual Display Units). The only problem is, with these new technologies comes a whole new set of issues and somewhat confusing specifications. This article will attempt to explain the meaning of various technical specifications, their importance when identifying a good display model and how these things affect the gaming experience.

The Austrian botanist Fredreich Rheinizer discovered liquid crystal back in 1888. "Liquid crystal" is neither a liquid nor a solid crystal; instead it remains in a state much like oil. In the mid-1960s, scientists demonstrated that liquid crystals could change the properties of light passing through it when you apply an electric field. Prototype displays were made soon after, but were too unstable for any kind of mass production. However, a British researcher proposed using a stable, liquid crystal type material (biphenyl). LCDs then went on to be featured in things like calculator screens and other gadgets displays.

Instead of making an image by firing a scanning beam of electrons at tiny phosphor dots on the inside of the screen (like CRTs), LCDs use a strong backlight as their light source, and then control how much of this light is allowed to reach the dots (pixels) by selectively blocking the path of that light. If you then place coloured glass over each pixel you can create colour images on the display.

Thin Film Transistors (TFT LCD) are an extension of the older Liquid Crystal Display technology. TFT LCD has a sandwich-like structure with liquid crystal filled between two glass plates. TFT Glass has as many TFTs as the number of pixels displayed, but these transistors are lighter than in previous LCD models. Liquid crystals then move according to the difference in voltage between the Colour Filter Glass and the TFT Glass.

Liquid crystals remain transparent unless a voltage is placed across them. While the voltage is applied, the portion of the display under its influence remains opaque. The speed at which the liquid crystal can be switched on and off is relatively slow (this will be discussed later). But in 1992, Thorn EMI announced a new type of LCD called FLCD (ferroelectric LCDs). This technology switches more quickly and also has the ability for each pixel to remain in whatever state it�s in without the need for the switching voltage to be constantly applied. This greatly increases battery life for portable equipment such as laptops and PDA�s. While FLCDs hold much promise, not much of that technology has been seen on the open market as of yet. The sensitivity of the FLCD screens to shock and vibration, which dislodges the crystals, is believed to have been solved and the contrast ratio is also improving as the elimitation of defects increase.

The future for ferroelectric LCDs is still uncertain, but if a higher contrast and wider viewing angle is achieved, they will compete with current LCDs. What is the response time for the FLCD? The FLCD has the advantage that the on and off switching times are the same, unlike other displays and the response time is a staggering 70�sec!!! at normal projector working temperatures. But I digress :)

For most users, TFT LCD monitors more than meet the requirements of everyday computing; coping adequately with the Windows environment, photos, video, documents, etc. For gamers, however, it"s not quite that straightforward. While CRTs have issues with size, emissions and power consumption, TFT LCD�s have a different set of issues - issues that directly affect aspects of PC gaming. These concerns include native resolution, non-native resolution, response time, dot pitch and a few more.

The Cathode Ray Tube of regular CRT monitors extends from the glass you see in the front of the screen, into a cone shape to the back of the unit and makes up the bulk of the monitor (in size as well as weight). At the very back of the tube is an electron gun. This gun fires a stream of electrons towards the screen. Magnets steer the electrons from the guns. These magnets are what you adjust with your control panel buttons on the monitor, allowing you to fill the viewable area of the screen. On the other side of the glass is a masking layer of three colored phosphers, the stream of electrons hits this layer and shines either red, green or blue. These primary colours combine to make your image.

TFT LCD monitors work on a completely different principle allowing manufacturers to significantly reduce the screen in both size and weight, while keeping the same viewable area. These screens have a fixed amount of pixels built into the display and are therefore designed to operate at a specific resolution; this is termed the native resolution of the display. Native Resolution is not usually a problem with everyday tasks...but can cripple the gaming experience. Why? If the video card does not have enough horsepower to run a game at the native resolution, the game will turn into a dull slideshow. One solution to get the game to run at an acceptable frame rate (at the native resolution) is to reduce various graphical details options. Considering today�s photorealistic games, however, the resultant image quality is rarely satisfying to the people that want to play these games. So one thing to consider when choosing a TFT LCD is whether your system can handle the images at its native resolution.

If the computer does not have enough horsepower to run at the native resolution, another option available is to change the resolution of the display to something less than the native resolution. This may seem to be a simple answer but this usually uncovers another weakness of TFT LCD�s...most do not display acceptable images at anything other than their native resolution. Two things can happen when a screen is not in its native resolution; either the screen size may be reduced and black bars are added or the image is stretched to fill the screen. If you have a screen with a native resolution of 1024x768 and you play a game at 800x600 then there may be nice black bars round the edge of your screen of 306432 pixels that are simply not being used. Much like watching a letterbox format movie (really really widescreen) on a standard size TV. Alternatively, the screen may use pixel doubling or �zooming�. This is where the non-native screen resolution is mapped onto the native resolution. You will not have any black bars round the edge of the screen, but each pixel being output by the video card may be mapped onto several pixels on the actual screen. This gives rise to fuzzy edges on objects, even when the picture is completely static. This situation should be avoided as much as possible. Make sure you look for an TFT LCD monitor that is the right size for your uses and for your computer.

Since their debut, a major black mark against TFT LCD�s in the gaming world is their relatively slow response times, hinted at earlier. The screens simply do not refresh at the same rate as the CRT cousins and this leads to ghosting and jagged pixel effects on you display. Ghosting is when the previous image displayed on the screen can still be seen for moments after the image has changed. For instance, in any first person shooter style game, if you look around quickly, a hazy after image of walls etc will trail the actual image on the screen. The image below shows that effect.

CRT�s have a refresh rate measured in Hz. The higher this number, the faster the screen refreshes the display. A CRT monitor redraws the whole display every pass, picking up even the smallest changes at a much faster rate than the human eye. Having a refresh rate that is too low, the CRT monitor will appear to flicker. In the States, the sine wave used by electric utilities is 60Hz. That"s why CRT monitors will flicker when run at 60Hz. (for more on the effects of Refresh Rate and VSYNC, click here and here) TFT LCD�s are slightly different and are not hindered by the flicker that plagues CRT monitors. Consequently, TFT LCD�s typically operate at 60Hz and when the image on the screen changes, only the affected pixels on the display are altered. The rest remain unchanged. But changing pixels takes time to alter from one state to another, this is commonly called rising and falling. The time the pixels take to rise or fall is then referred to as the response time. The smaller the response time, the faster the pixels can change and this will result in less of the ghosting effect. This is, in my opinion, the greatest issue with TFT LCD�s and gaming. This response time is given in milliseconds on the specifications for the display. However, gray-to-gray response time is much more important for determining if an LCD is the best for gaming, rather than rising and falling response time. Unfortunately, grey-to-grey response time is rarely given on sales specifications.

One continuous criticism of CRT monitors was the screen size. Invariably CRT monitors would be sold according to their tube size. So the �18� monitor� refers to the size of the cathode ray tube in the monitor. The viewable area of the screen may be significantly different from 19�. The viewable area may range from 15� to 17.1� depending on the manufacturer of the CRT in question. When referring to LCD�s and TFT 19� is 19�. The viewable area of an 17� CRT is equivalent to a 15� LCD or TFT screen. So if you are perfectly happy with the size of your screen and just wish for it to take up less space. You should go for the next size down (i.e. if you have a 19" CRT desk hog, look at buying the next size down, a 17" or 15" LCD/TFT)

Although CRT Monitors are better for gaming, TFT/LCD monitors are on the rise. They"re more technologically advanced than CRT ones but they"re worse for gaming. Nevertheless, these are gaining popularity because they"re better for everything else. Smaller, lighter, better to the eyes, great quality and good size makes LCD monitors the number 1 choice.

These days monitor brands have at least one 120hz tft monitor. These are *highly* recommended, in alternative to a big and heavy crt. Some models available today:

If you own one 120hz tft monitor you can ignore the remaining information on this page, since these monitors usually deliver a very smooth experience out-of-the-box.

Under Windows with Nvidia graphic cards you can tweak this settings in Nvidia Control Panel, you got few options in Display -> Adjust desktop size and position. There are two modes recommended:

Do not scale - which will result in black bars around the image. So if you got 1920x1200 and you run 640x480 then you will get vast amout of black borders. It will look bizarre. Example here.

TFT monitors are currently limited to 75Hz. Thats 75 "screen updates" per second. See below for best settings for each monitor. Note that some screens accept diplay at 75Hz rate but in fact interpolate it back to 60Hz so you will get once per 15 frames dropped, wich may have nasty non-smooth side effects.

There is a limitation of bandwidth using DVI especially with higher-res TFTs but this is affected by the monitor"s capability of being single- or dual-linked and it really limits the possible fps. Huge monitors with huge resolutions are basically unable to have anything above 60Hz due to this DVI bandwidth limitation.

The difference between VGA and DVI input varies from monitor to monitor. Basically VGA input adds random noise (or snowing) to the picture, or moving "waves" in the worst case scenario, or reducing the sharpness of the image and/or accuracy of color prodution. Note that using DVI or VGA does NOT affect input lag or the screen processing time at all, so it"s recommended that DVI is being always used.

LCD dont refresh the entire screen, instead they "morph" the image pixel by pixel. CRT refresh the entire screen, so you always get a brand new image, created in one go, rather than 1000s of pixels. The bluriness in LCD and CRT comes from how fast the images or pixels are refreshed. Most people can set their CRT to 60hz and see quite a blurry image. CRT uses an electron gun in a technique which basically "morphs" all the pixels, 60 times a second (during 60hz operation, 120 times a second during 120hz, etc.) This means that LCD will actually be faster than CRT, if they update at the same hertz, because LCD selectively refreshes parts of the screen, while CRT mechanics force it to refresh the entire screen. (This is partly how lossless video compression streams achieve smaller file sizes, by excluding redundant data except for key-frames every couple of seconds.)

One legitimate criticizm of LCD is "ghosting" which is the effect of the physical properties of low quality liquid crystal, which the visible phosphorus layer on CRT does not exhibit.

CRT and LCD can both have true blacks, and true colour, depending on the quality of the manufacturer. Most LCD have "grid resolution", although there are alternatives to CRT such as Plasmas, etc.

Cathode Ray Tubes (CRT) were once the only way to convey pictures. They are large, bulky and consume a lot of power. Liquid Crystal Displays or more commonly known as LCDs are beginning to replace CRTs in most applications today. They are essentially the reverse of what CRTs are, light, thin, and energy efficient. Also, because of the high power consumption of CRT displays, it needs to dissipate a greater amount of energy which makes it run hotter compared to LCDs.

The only aspect where CRT wins over LCD in performance is in the response time. Older LCDs have been plagued with very slow response times that create ghosting effects on the screen whenever there is high speed motion. This made early LCD screens unsuitable for most gaming needs and even in viewing movies, but newer LCDs have improved on it and this is no longer such a big issue.

Understandably, LCDs cost significantly more compared to CRTs in displays of the same size due to the more complex production process that is needed to produce LCDs. But consumers often rationalize that the extra cost is recovered after a while due to the significantly lower power consumption. The physical dimensions of the LCD also meant that it is usable in so many applications where CRTs would simply be impractical to use. Aside from the usual TV screen or computer monitor, LCDs are also used in mobile phones, digital cameras, music players, GPS navigators, and so much more.

A problem that is unique to LCD screens is the dead pixel, which is unheard of in CRT screens. Since LCDs are a matrix of pixels, one or more of these pixels may not function due to irregularities in the production process. This leaves a small dot on the screen that doesn’t change with the display, appearing like a small piece of dirt stuck in there. Most manufacturers would accept and replace screens that have dead pixels in them but it is always best to inquire about the warranty and their dead pixel policy.