Everything About LCD Monitor

The evolution of computer monitors brings us closer to the future…Today, it has become thinner and lighter.

The liquid crystal display (LCD) is a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. It is used in battery-powered electronic devices because it uses very small amounts of electric power.

LCD monitors have changed the computer industry’s productivity. If you want style, grace, portability and spectacular image quality, you’ll get it all with an LCD monitor. It is attractive with thin-bezel design has captured people who values style and substance. Consequently, nearly everyone is shifting their preference from CRT monitors to LCD PC monitors.

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Save your eyes with reduced glare of LCD. An LCD monitor has uniform screen brightness and there is no flicker, you would not experience glare and eye strain compared to a CRT. The high definition LCD technology is excellent for everything you do, whether you’re working on graphics or spreadsheets, playing games, watching video or just doing word processing.

Save your back as you work on your laptop or computer. The 19-inch CRT weighs about 46 pounds while LCD only weighs 12 pounds. When it’s time to move it, your back will thank you.

Save enough space on your desk with your sleek LCD. The new ultra high efficiency LCD monitor is better in so many ways, it’s bright, has a colorful display, and perfect for any application. The small size and light weight equipment will work just about anywhere you go.

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You can save energy using a more efficient monitor…the LCD.

Choosing an ultra high efficiency LCD monitor can reduce your energy usage, even over other LCD monitors. The ultra high efficiency monitors use up to 80% less energy than an average CRT monitor.

You can actually save 520 kWh/year by switching from your old CRT to ultra high efficiency LCD monitor or the qualifying monitor. You can even save 360 kWh/year by switching from a standard LCD monitor to ultra high efficiency LCD monitor. Qualifying monitors can also eliminate about 1000 lbs. of CO2 emissions over the lifespan of the monitor

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Passive Display (TN, STN)
Passive matrix is the term when it used for computer screens and passive display when it used for small readouts, all the active electronics (transistors) are outside of the display screen. Passive displays have improved but do not provide a wide viewing angle. Types of passive displays are Twisted Nematic (TN with a 90º twist), Supertwisted Nematic (STN with a 180-270º twist) and Dual Scan STN.

Active Display (TFT)
Widely used for all LCD applications today (laptop and desktop computers, TVs, etc.). Known as active matrix displays, a transistor is used to control each subpixel on the screen to produce high definition resolutions. The active matrix provides a sharp, clear image with good contrast and eliminates submarining. Fabrication costs were originally higher than the passive matrix, which caused both types to be used in the early days of laptop flat panels. Active matrix displays use a 90º (TN) twist and known as thin film transistor-LCD (TFT LCD).

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By: Govy

Liquid Crystal Display(LCD) is technology that uses rod-shaped molecules (liquid crystals) that flow like liquid and bend light. Unenergized, the crystals direct light through two polarizing filters, allowing a natural background color to show but when it is energized, filters redirect the light to be absorbed in one of the polarizers, causing the dark appearance of crossed polarizers to show. The more the molecules are twisted, it produces a better contrast and viewing angle.

Since less power is needed to move molecules than to energize a light-emitting device, LCDs replaced the light-emitting diodes (LEDs) in digital watches in the 1970s. Eventually, LCDs were used for monochrome displays and still are and in the 1990s, color LCD screens caused sales of laptop computers to explode. In 2003 to date, more LCD monitors were being sold for desktop computers than the bulky and space consuming CRTs.

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By Govy

An LCD that can show colors has three subpixels, namely: red, green and blue color filters. This create each color pixel for the LCD.

Through careful control and variation of the voltage used, the intensity of each subpixel can range over 256 shades. Combining the subpixels can produce a palette of 16.8 million colors (256 shades of red x 256 shades of green x 256 shades of blue), these color displays take an enormous number of transistors. For example, for a typical laptop computer, it has a resolution up to 1,024×768. If we multiply 1,024 columns by 768 rows by 3 subpixels, we get 2,359,296 transistors etched onto the glass to produce different colors!

If there is a problem with any of these transistors, it creates a “bad pixel” on the display and definitely produces fuzzy images.

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By: Govy

Over a billion PCs are being sold every year with a visual interface each human user. LCD monitors have the following features: light weight, thin shape, flat screens, energy saving, emissions free, and digital video PC display.

The compact configuration of an LCD monitor makes it convenient for the users to enjoy their PC entertainment choices. Unlike the bulky CRT, the LCD monitor tales less space and fits comfortably on your desk.

You can watch DVD movies, enjoy streaming videos or play games. It’s all great fun! So, whether you’re at work or play – during the night or the day – an LCD monitor with its delicious images, compact construction and stylish design is the perfect choice.

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By: Govy

There are two types of computer monitors available in the market: the Cathode Ray Tube (CRT) and the Liquid Crystal Display (LCD). LCD monitors are preferred over CRT monitors by users because they use advanced technology, compact, light in weight, sleeker and deliver much better picture quality.

However, the LCDs are more expensive than the CRTs. LCD technology is constantly evolving and improving its quality. Today, it employ several variations of liquid crystal technology that produces high definition resolutions. These are the super twisted nematics (STN), dual scan twisted nematics (DSTN), ferroelectric liquid crystal (FLC) and surface stabilized ferroelectric liquid crystal (SSFLC).

With this features and qualities, users would definitely choose LCDs over CRTs.

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By: Govy

Dead Pixels are simply pixels on the LCD monitors that do not function and cannot be repaired. 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 computer.

In the early days, the issue of dead pixels on LCD monitors confronts the manufacturers. However, the manufacturing practices have greatly improved over the years and dead pixel issue is very much controlled based on the experience gained. Many manufacturers are confused as to the Warranty Policies they need to enact for the replacement of monitors with dead pixels. The top manufacturers have no problem replacing the monitor as long as it is within the warranty period.

So when you shop for an LCD monitor, check the dead pixel policy indicated in the warranty and check for dead pixels once you install it in your system. If you spot a dead pixel in your LCD, get a replacement if its within the warranty period.

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When a monitor is described as having a wider viewing angle, this has no connection with the widescreen format (which simply means that that the display is physically wider).

Try looking at an LCD monitor from an angle. The image will probably be darker, or may disappear altogether. To compensate for this problem, LCD monitor makers have designed wider viewing angles which are measured in degrees (a bigger number is better). In general, look for between 120 and 170 degrees. Manufacturers measure viewing angles differently, so the best way to evaluate a monitor is to test the display yourself. Check the angle from the top, bottom, and sides, and try to re-enact how you will typically use the monitor.