Liquid Crystal display or LCD monitor is a thin and flat device for display. It is made by large number of color or monochromatic pixels which are arrayed in way of a light source or a reflector. It uses very small amount of electric power and hence is used often in battery powered electronic devices. The technology used is very much dissimilar to CRT technology which is used by many desktop monitors. It was used only on notebook computers for a very long time. Only recently they have been offered as an alternative to CRT monitors. They take up very less desk space and are much lighter than the CRT monitors. But they are also quite expensive.

Each pixel of LCD monitor display has a layer of aligned molecules between two electrodes which are transparent and two polarizing filters. Because there is no liquid crystal between the aligned polarizing filters, light which has passed through the first filter will be blocked by the second polarizer. The surface which is in contact with the crystal is treated to align it in particular direction. The direction of alignment is defined by direction of rubbing.

Resolution, in terms of horizontal and vertical size expressed in pixels, is native supported for the best display effects. This is one of the things that sets LCD monitor apart. Dot Pitch is defined as the distance between two adjacent pixels. It is the minimum for sharper image. Each pixel is divided into three cells, or sub pixels. These are colored red, green and blue. Each sub pixel can be controlled independently for millions of combinations and hence colors. Older CRT monitors use phosphors for sub pixel structure. The analog electron beam though does not hit the exact sub pixel.

Color components can be arrayed in various geometries, depending on how the monitor is to be used. If the software being used knows the geometry, it can be used to increase the apparent number of pixels using sub pixel rendering. This kind of technique is often used in text anti-aliasing. LCDs which are used in digital watches and calculators have separate contact for each segment. Thus an external dedicated circuit charges each segment individually. This is not possible if the number of elements increases.

Small monochrome displays like the ones used in Personal Organizers or in older laptops have passive matrix like structure and employ super twisted nematic or double layer STN technology. Here, each row or each column has a single electrical circuit and the pixels are hence addressed according to rows and columns. But as the number of pixels increases, the response time decreases and the technique no longer remains feasible.

Color displays used in modern LCD monitors and televisions use active matrix structure. An array of thin film transistors (TFT) is added. Each pixel has a dedicated transistor. Active Matrix display looks brighter and sharper than passive matrix display of similar size and has better response time.

LCD technology has some critical drawbacks too. Resolution of a CRT monitor can be changed without introduction of any new artifact. But LCDs can produce only their native resolution and non native resolutions are achieved by scaling. The blacks of LCDs are actually grey because of presence of a light source. This results in lower contrast ratio when compared to CRTs. LCDs with cheaper parts cannot display as many colors plasma or CRT counterparts.

Also, LCD display has longer response time when compared to Plasma or CRT counterparts. Input lag is also present and the viewing angle is limited. In spite of these drawbacks, LCD display is quickly gaining prominence.

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DigInfo – movie.diginfo.tv Eizo Nanao released its newest addition to the ColorEdge series of color calibration LCD monitors, the 22-inch widescreen “ColorEdge CG222W” which went on sale on 19th of March. Although the CG222W is positioned as an entry level model, it features a LCD panel that offers the same superior color reproducibility as existing monitors in the ColorEdge series. The new monitor is also equipped with functions that are the same as those of higher grade monitors including …

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This article can also be accessed in portuguese language from the Article section of page www.polomercantil.com.br/monitor-lcd.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br

An LCD monitor, or Liquid Crystal Display monitor, is a screen actively sought after as a large format TV screen or an advertising screen as a result of the highest quality images produced on these screens.

Top 10 items to consider when buying an LCD Monitor:

1. Resolution Quality: Some of the key features to consider when buying an LCD monitor are resolution quality and aspect ratio. In the era of Blue-ray and high definition, it is important to buy a Full HD monitor and not go with HD ready.

2. Number of USB Hubs: These hubs usually come with the display. They prove to be very useful for plugging various media devices directly to the display vs. going through a central medial player.

3. Pixel Defects: Sometimes, when the same image is left on the screen for long, the pixels get worn out or are dead. This develops a black or white dot on the screen, thus not producing any image in that area. Pixel defects may be as a result of manufacturing defects. Make sure the warranty covers Pixel defects or spotting defects.

4. Attached Speaker Evaluation: Some monitors come with attached speaker systems. This is usually expensive when compared to the separate speaker system and usually poor quality than a stand alone system. If such an attached speaker system is available in the monitor, then it should be noted that a quick-mute button and readily accessible volume controls should be available in the monitor itself.

5. Viewing Angle: Most new LCD monitors have wide viewing angles. It is important to consider viewing-angle performance if you plan to use the monitor to view images or movies. The best way to judge is to see the unit in person.

6. Digital interfaces: Data interfaces are very important for businesses. For example, as a business you would like to remotely manage and control the various LCD monitors. Businesses should strongly consider LCD information display (also called Professional Displays) vs. an LCD TV. The Professional Displays come with the right variety of interfaces. If entertainment and TV show watching are the only concerns then interfaces are less important as most LCD monitors come with adequate interfaces.

7. Bright Pixel Elimination Feature: New LCD monitors have bright pixel elimination feature that ensures if a failed pixel occurs on the monitor, it is effectively invisible to the viewer. Not a must-have but a good feature to have.

8. Configuration Programming Software: Included programs that let you configure display settings using your computer keyboard or mouse are a big improvement over struggling with tiny front-panel buttons.

9. Portrait Capability: Increasingly portrait format is being used for exhibitions and store displays. Be sure to check that the LCD monitor you are buying supports the portrait format. Using landscape format in portrait can result in reducing the life of the LCD monitor. Portrait-capable LCDs, however, often have superior viewing-angle performance. Not all LCD monitors.

10. Included Cables: Last but not the least item is to check to see what cables are included. Manufacturers often don’t provide the digital cable on dual-input models.

As a wrap-up, with technologies such as LCD monitors, it pays to buy the new generation solution as it will extend the time you will use the monitor.

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With the Samsung T260HD Touch of Color 26″ Widescreen LCD Monitor whats better than an HDTV that not only looks sleek and sharp, but that can deliver an incredible performance as well? Nothing beats the Samsung T260HD LCD TV, which simply put, is beautiful and unique both inside and out. The Samsung T260HD features a stunning Touch of Color design and 1080p digital HDTV tuner for the highest resolution images.

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Let us have a look at some of the known and unknown facts related to the LCD monitors so as to extract the optimal benefits from them.

A LCD monitor is aesthetically pleasing offering a wide viewing angle with exceptional colour purity, contrast and image brightness. It is protected against any kind of magnetic interference and screen flickers. It usually makes use of just 25-50 watts as compared to 60-80 watts used by a CRT monitor. The LCD monitors can be easily mounted on the walls. The USB ports that come with these monitors allow you to easily connect several devices at the same time. They have an exceptional response time, varying usually between 2-16 ms.

LCD monitors make use of the liquid crystal display to deliver smart desktop and laptop solutions. In a LCD monitor, the polarised sheets that are lying between the sandwiched liquid crystals are used. This phenomenon helps it to get a sleek and less bulky look as compared to a CRT monitor. These monitors are also energy-efficient, consuming only 1/3rd of the power used by CRT monitors. With a usual aspect ratio of 4:3, these cheap LCD monitors offer unmatched viewing experience to the users.

They easily add visual elements to your desktop and offer unbeatable multimedia applications to cater to your needs. The OSD controlling adjustment keys are easy-to-use and are not flimsy. LCDs are known to effectively gel with the digital form of inputs and most of the modern day LCDs can be easily tilted by a specific angle, a feature conducive to the needs of an office executive.

Now that we have learnt enough about the cheap LCD monitors, let us now move to some of the biggest names in this world followed by some do’s and don’ts to get a good LCD deal.

Some of the most eminent names in the world of LCD monitors are ViewSonic and Samsung. The ViewSonic VX1945WM, ViewSonic VG2030WM and ViewSonic VX922 are some of the most highly acclaimed LCD monitors in the present day market

Things to remember:

The present day market is full of cheap LCD monitors but you need to be clear in your vision and priorities giving enough consideration to factors such as quality, price and customer service. Do not forget to check the dead pixel policy in the laptop warranty terms and conditions. This will come handy if your laptop gets affected by a large number of dead pixels. Check the image resolution, aspect ratio, image and sound quality, multimedia capabilities and screen size before making the payment. Get it installed through an expert and do not try your own hands, make sure to follow the instructions, if any, to ensure a consistent flow of the high-end solutions.

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HP BrightView Widescreen with HP VividColor technology 25.5″ diagonal Thin-Film Transistor LCD active matrix native 1920×1200 pixel Resolution! beyond Full HD!!! 3000:1 contrast ratio / 400 nits brightness / 3ms response!!! Built-in 2 MegaPixel HP WebCam / Speakers HP TaskLight at he bottom of the screen for improved Keyboard Illumination HP Ambient Light Sensor for automatically bright adjusting 15-in-1 digital media card reader and 2 USB Ports Includes and HP Remote Control and a in …

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The author is a specialist in retail writing. Her writing skills reflect the outcome of years of exposure to the retail industry. Working with retail giants as a consultant has enriched her knowledge base and her passion for writing got fire. She can be read regularly on RetailsDirect.com. For details please visit: www.retailsdirect.com – Samsung LCD TV