FAQs (Frequently Asked Questions)

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Q:What are the advantages of TFT LCD compared with CRT?

A:In a CRT monitor, a gun shoots electrons and general light by colliding polarized electrons on fluorescent glass. Therefore, CRT monitors basically operate with an analog RGB signal. A TFT LCD monitor is a device that 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 CRT 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 CRT. 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

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Philips 190C1, 190CI user manual What are the advantages of TFT LCD compared with CRT?
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190CI, 190C1 specifications

The Philips 190C1 and 190CI monitors are part of a series that emphasizes robust design, energy efficiency, and user-friendly features. Aimed at home and business users alike, these monitors are designed to cater to a variety of computing needs, from everyday office tasks to multimedia applications.

One of the main features of the Philips 190C1 and 190CI models is their 19-inch LCD display. This size strikes a balance between space-saving design and ample screen real estate for multitasking. The monitors offer a native resolution of 1280 x 1024 pixels, allowing for crisp text and vibrant images. The 5ms response time ensures smooth visuals, which is particularly beneficial for watching videos or playing casual games.

Both models leverage Philips’ innovative technologies to enhance image quality. The integrated SmartContrast feature automatically adjusts the contrast ratios, providing deeper blacks and brighter whites for a more dynamic visual experience. This technology effectively optimizes the monitor’s performance across various applications, enhancing both productivity and entertainment.

Energy efficiency is a significant characteristic of the Philips 190C1 and 190CI. The monitors are equipped with an Eco-mode feature that reduces power consumption without compromising performance. With Energy Star certification, these monitors reflect Philips' commitment to environmentally friendly practices, making them a sensible choice for eco-conscious consumers.

Connectivity options are versatile, as both models include a VGA input, making them compatible with a variety of devices such as desktop computers and laptops. This simplicity in connection enhances their usability across different setups, ensuring a seamless experience for users.

Ergonomics is also a focal point in the design of these monitors. The tilt function allows users to adjust the screen angle for improved viewing comfort, catering to various working environments and individual preferences. This feature is especially useful for long hours of use, helping to reduce strain on the neck and eyes.

In conclusion, the Philips 190C1 and 190CI monitors are ideal for users seeking a reliable, efficient, and comfortable display solution. With their combination of functional design, impressive image quality, and eco-friendly features, these monitors stand out as solid choices for both professional and personal use. Whether for work or play, they provide an excellent visual experience that meets the demands of today's digital landscape.
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