Let's Resolve the Frequent Troubles of LCD Monitor Ourselves

TFT LCD monitors are rapidly becoming shipped with new computers by default. On this page I explain you the frequent trouble of TFT monitor and how to resolve them.
No display or white screen:
If this is a new install make sure the refresh rate is not set too high. If you installed a new video card in your system make sure the refresh rate is not set too high. Under Windows, reboot the system and go into "Safe Mode" (Use F8 key on boot up) select safe mode and change the refresh rate under display properties to either 60Hz or Default. Then reboot the system and the screen will turn on. Maximum mode on 15" TFT screens is 1024x768 and maximum mode on 17" and 19" TFT is 1280x1024. Check to see if the green light is on with the external power adapter. Make sure all plugs are secure and the video cable is properly attached to the computer.
Dark screen in games:
TFT Liquid Crystal Display monitors are a unique devices that are manufactured to meet excellent picture clarity and reproduction in a native mode. Outside a native mode graphics will be darker, fine lines and text will be thicker. Native mode for 15" TFT panels is 1024x768, 17" and 19" TFT panels are 1280x1024. Most games can be configured to run at 1024x768 which should produce clean graphics.
Thick text:
As described above, TFT LCD monitors perform best in their native modes. Other modes can be used however the reproduction of text will vary in thickness depending on the mode the monitor is running in. Best text reproduction is view in the monitors native mode.
Faint or unseen text:
TFT monitors are Bright! So bright that sometimes text in a DOS program may be very faint or not seen. In order to see this text, you can reduce the contrast level down until the text is visible. TFT LCD monitors were manufactured to perform in a GUI environment such as Windows, Linux (X) and Macintosh. Older designed programs may have upgrades to enhance this effect to make the text legible.

Wavy lines on the screen:
In some instances you may encounter wavy lines on the screen. These are usually 1/4" thick and move in a vertical motion. This is caused by a noisy electrical feed from a wall outlet. If you change your vertical refresh rate under display properties to 75Hz this effect should disappear.
Small dot on screen:
TFT panels by their very nature are difficult to manufacture. KDS uses displays from various suppliers including; Samsung, Hyundai and Acer, who all guarantee the display to be 99.99% free from pixel defect. What that means is a 15" LCD display can have up to about 6-10 broken pixels and still be considered "acceptable". Broken pixels are individual pixels, which are stuck on, off, or as one particular color. Depending on their location and intensity, they can be next to invisible or obvious. This is common to ALL TFT screens and is not considered a defect by the screen manufacturer.
Dark areas:
Retail TFT LCD monitor products employ the use of a single TFT backlight. This backlight is responsible to deliver full edge to edge brightness across the screen. On some models the screen may not be as bright in the center or the edges as other areas. This is due to the design the actual panel manufacture took to keep costs down so that the TFT panel is affordable for the retail environment. Prices of TFT panels vary according to added features (TV tuner, SVIDEO etc.). They also vary according to the number of backlights that are in the panel. High-bright monitors with multiple backlights can cost upwards of $2,500.00 for a 15" panel.

Acer V223-WBD 22" TFT LCD Monitor Vs Samsung Touch of Color T220HD 22-inch LCD HDTV Monitor a

A good monitor is indispensable, especially for those of use who work in front of the computer for prolonged periods of time everyday. A large monitor makes it easier for us to multitask and also improve the multimedia experience on our computer. If you are planning to get yourself a larger desktop monitor for your PC, consider getting yourself a 22" LCD monitor. Here is a comparison of two of my favorite models, the Acer V223-WBD 22" Widescreen TFT LCD monitor and the Samsung Touch Of Color T220HD 22-inch LCD HDTV monitor.
Price: The Acer model currently costs around $170 each, while the Samsung model costs around $270 each. That's a huge $100 difference. The huge price difference can be justified by the amount of features found one each model. Nevertheless, the budget conscious will find it to be a no-brainer in choosing between the two.
Winner: Acer V223-WBD 22" Widescreen TFT LCD monitor
Specs: The Acer model has a 2500:1 dynamic contrast ratio and a brightness level of 300c/m2. The Samsung model on the other hand has the same level of brightness, but a considerable 20'000: 1 dynamic contrast ratio. Both models have a 1680 x 1050 resolution and a 170/160-degree viewing angle. The Samsung also comes with a TV tuner and hidden surround sound speakers (not found on the Acer model).
Winner: Samsung Touch Of Color T220HD 22-inch LCD HDTV monitor
Design: The Acer monitor has a basic and simple design, with angular corners and a rectangular stand. The Samsung monitor on the other hand has a much more stylish design. It's a black glossy frame with a hint of red. It also has a sleek and curvaceous stand. The bold design of the Samsung monitor may not suit to everyone's taste and may not blend well into certain interior designs. The simple design of the Acer monitor on the other hand is much more versatile.
Winner: Draw
Verdict: Both these models are designed for very specific market niches. If you have some cash to spare, you should get your hands on the Samsung Touch Of Color T220HD 22-inch LCD HDTV monitor (if you like the design) as it comes with way more features than the Acer monitor. It is also a great choice for those who often watch movies, videos or work with animations on their computer, as the Samsung model is a much better monitor for watching videos. If you are on a budget or seldom use your PC for watching videos, the Acer V223-WBD 22" Widescreen TFT LCD monitor will prove to be a good choice.

Mechanism Behind TFT Monitor

As we know that the TFT LCD Display is the ultimatum, this TFT monitor uses thin film transistor technology. In the olden days, cathode ray tubes were used, but now it is replaced by LCD monitors that has another name, flat panel displays. The abbreviation could be explained as Thin Film Transistor or Liquid Crystal Display.
The advantage of this system has been dealt in many devices. Some of the examples are television, mobile phones, computer monitors, navigator systems, projectors etc. In the calculator which has a small liquid crystal display, the voltage could be applied without the interference of the other segment. But this becomes impossible when the display is large like television or computer monitors.
In such a case, the pixel elements are arranged in rows and columns which reduce the number of connections from millions to thousands. The rows could be driven with a positive voltage and vice versa with the column. Even then, there is another problem. The intersection points or pixels will be driven with higher voltages. The intersection segments tend to be darker. This could be dealt with supplying each pixel with its own transistor.
The pixel is made of a capacitor with the layer of insulating material which is inserted between conductive layers. Plasma Enhanced Chemical Vapor Deposition is the process used for the deposition of silicon. Though TFT monitors and IPS LCD panel are used inter-changeably, there exists some difference. LCD is a device which uses any number of color pixels arrayed in front of light source. The electric power used is very less when compared to TFT monitors. LCD uses flat panels where as TFT uses both flat panel displays as well as projectors. TFT monitors are commonly available in sizes 12 to 30 inches.
There are different types of TFT monitors. They are Twisted Nematics display, In-plane switching, Multi-domain vertical alignment, Patterned vertical alignment and advanced super-view. The most common one is Twisted Nematics display which is inexpensive.
The TFT monitor can be called as active matrix LCD. Though this is not the only active matrix LCD, it is the commonest one. There are also passive Lilliput 7-inch lcd monitor is used in calculators and other small devices. The active matrix-LCDs have the best resolutions and the maximum color display. Now let us look for the commonest type of TFT monitors, Twisted Nematics display type. The best part of this type is the fast response of its pixels. It also uses the method of Frame Rate Control, which causes the simulation of pixels in cycles to provide the needed shade.
The negative part of this type is the poor viewing angle and poor color reproduction which is replaced by In-plane switching. As the name suggests that the crystal molecules move perpendicular to the panel which paves the way to get good color reproduction as well as wide viewing angles. Initially the response was slow but later it was somewhat modified by some new evolutions.
The next type of the TFT monitor is Multi Domain Vertical Alignment which satisfied the color reproduction, wide viewing and also the fast response. But this was overtaken by the inexpensive Twisted Nematics display type. The patterned vertical alignment also uses modernized CRT technologies. The next type is the advanced super view, as the name suggests that it provides wide viewing angle. Even-though there are different types of monitors, the Twisted Nematics type stands the commonest due to its inexpensiveness and the fast response.
The current usage by TFT monitors is very much less when compared to the usual CRT monitors, since this can allow very fast re-drawing of the display as the image is refreshed of repainted many number of times per second.