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 220AW8 user manual Why is there no flicker on an LCD Monitor?
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220AW8 specifications

The Philips 220AW8 is a powerful monitor that combines style, performance, and advanced technology to meet the needs of both professional and casual users. Primarily targeting those in graphics, design, and general computing, this model showcases a variety of features that set it apart in the competitive market of computer displays.

With a 22-inch wide-screen display, the Philips 220AW8 boasts a crisp resolution of 1920x1080 pixels, delivering stunning Full HD visuals. This high-definition capacity allows for vibrant colors and sharp details, making it ideal for everything from video editing to gaming. The 16:9 aspect ratio enhances the viewing experience, particularly for watching movies or multitasking with multiple windows open.

One of the standout features of the 220AW8 is its incorporation of advanced IPS technology. This panel technology ensures wide viewing angles, providing consistent color accuracy and brightness, regardless of the viewer's position in relation to the screen. As a result, multiple viewers can enjoy the same high-quality image without experiencing color distortion or contrast issues.

In addition to its impressive visual capabilities, the Philips 220AW8 is equipped with an array of connectivity options, including DVI and VGA ports. This versatility allows users to connect the monitor to various devices, catering to diverse setups in home offices or professional environments. The built-in multimedia features, such as the integrated speakers, further enhance its usability, reducing the need for additional peripherals.

User comfort has also been a key consideration in the design of the Philips 220AW8. The monitor offers flexible ergonomic adjustments, including height, tilt, and swivel options, allowing for a personalized setup that promotes better posture and reduces eye strain during extended use. This is particularly important in today's work environment, where employees often spend long hours in front of their screens.

Moreover, the eco-friendly features of the Philips 220AW8 deserve mention. With its energy-efficient design, it helps reduce power consumption while delivering high performance. The monitor is Energy Star certified, which reflects Philips' commitment to sustainability and environmental responsibility.

Overall, the Philips 220AW8 is a well-rounded monitor tailored for individuals who value superior display quality, ergonomic design, and sustainable technology. Whether for work or entertainment, it is a model that continues to impress users with its performance and efficiency.
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