displays an input image by operating a liquid crystal panel. The TFT has a fundamentally different structure than a CRT: Each cell has an active matrix structure and independent active elements. A TFT LCD has two glass panels and the space between them is filled with liquid crystal. When each cell is connected with electrodes and impressed with voltage, the molecular structure of the liquid crystal is altered and controls the amount of inlet lighting to display images. A TFT LCD has several advantages over a CRT, since it can be very thin and no flickering occurs because it does not use the scanning method.

Q:Why is vertical frequency of 60Hz optimal for an LCD monitor?

A:Unlike a CDT monitor, the TFT LCD panel has a fixed resolution. For example, an XGA monitor has 1024x3 (R, G, B) x 768 pixels and a higher resolution may not be available without additional software processing. The panel is designed to optimize the display for a 65MHz dot clock, one of the standards for XGA displays. Since the vertical/horizontal frequency for this dot clock is 60Hz/48kHz, the optimum frequency for this monitor is 60Hz.

Q:What kind of wide-angle technology is available? How does it work?

A:The TFT LCD panel is an element that controls/displays the inlet of a backlight using the dual-refraction of a liquid crystal. Using the property that the projection of inlet light refracts toward the major axis of the liquid element, it controls the direction of inlet light and displays it. Since the refraction ratio of inlet light on liquid crystal varies with the inlet angle of the light, the viewing angle of a TFT is much narrower than that of a CDT. Usually, the viewing angle refers to the point where the contrast ration is 10. Many ways to widen the viewing angle are currently being developed and the most common approach is to use a wide viewing angle film, which widens the viewing angle by varying the refraction ratio. IPS (In Plane Switching) or MVA (Multi Vertical Aligned) is also used to give a wider viewing angle.

Q:Why is there no flicker on an LCD Monitor?

A:Technically speaking, LCDs do flicker, but the cause of the phenomenon is different from that of a CRT monitor -- and it has no impact of the ease of viewing. Flickering in an LCD monitor relates to usually undetectable luminance caused by the difference between positive and negative voltage. On the other hand, CRT flickering that can irritate the human eye occurs when the on/off action of the fluorescent object becomes visible. Since the reaction speed of liquid crystal in an LCD panel is much slower, this troublesome form of flickering is not present in an LCD display.

Q:Why is an LCD monitor virtually low of Electro Magnetic Interference?

A:Unlike a CRT, an LCD monitor does not have key parts that generate Electro Magnetic Interference, especially magnetic fields. Also, since an LCD display utilizes relatively low power, its power supply is extremely quiet.

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Philips 220VW8 user manual Why is there no flicker on an LCD Monitor?
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220VW8 specifications

The Philips 220VW8 is a versatile and efficient display solution designed to meet the needs of both home and office environments. With its impressive combination of features and technologies, this monitor offers an exceptional viewing experience that caters to various applications, from professional work to casual multimedia consumption.

At the heart of the Philips 220VW8 is its 22-inch LCD display, boasting a full HD resolution of 1920 x 1080 pixels. This ensures sharp images and vibrant colors, making it suitable for detailed tasks such as graphic design, photo editing, and general computing. The monitor utilizes an advanced IPS (In-Plane Switching) panel, which provides wider viewing angles and better color accuracy compared to traditional TN panels. This means that users can enjoy consistent image quality from various perspectives, making it an excellent choice for collaborative workspaces or family use.

One of the standout features of the Philips 220VW8 is its EnergyStar certification, which highlights its energy-efficient design. The monitor uses advanced technologies to reduce power consumption, helping users save on energy bills while being environmentally friendly. The PowerSensor feature further enhances energy savings by detecting the presence of the user and automatically dimming the display when it is not in use, thus prolonging the monitor's lifespan.

In terms of connectivity, the Philips 220VW8 is equipped with multiple input options, including VGA and DVI-D ports, allowing for easy integration with a variety of devices. This flexibility makes it a suitable choice for users who may need to switch between different systems or setups.

The monitor also features several built-in technologies to optimize the user experience. SmartContrast technology dynamically adjusts the contrast ratio based on displayed content, ensuring deeper blacks and brighter whites. The SmartImage feature allows users to choose different modes for specific applications, be it for movies, games, or productivity tasks, enhancing the viewing experience further.

Ergonomically designed, the Philips 220VW8 offers tilt and height adjustment options, enabling users to customize their viewing angles for improved comfort during extended use. The sleek and modern design is also aesthetically pleasing, making it a perfect addition to any workspace or home setup.

Overall, the Philips 220VW8 is a well-rounded monitor that excels in performance, visual quality, and energy efficiency, making it a formidable choice for a wide range of users. Whether for work or leisure, this display ensures an optimal viewing experience that does not compromise on quality or sustainability.
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