FAQs (Frequently Asked Questions)

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 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.

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Philips 190X5 user manual FAQs Frequently Asked Questions
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190X5 specifications

The Philips 190X5 is a 19-inch LCD monitor that stands as a blend of functionality and sleek design, perfect for both home and office environments. This display is particularly noted for its clear and vibrant image quality, making it a reliable choice for various tasks, from document editing to multimedia consumption.

One of the standout features of the Philips 190X5 is its vivid image performance, achieved through its LCD technology. With a resolution of 1280x1024 pixels, the monitor delivers sharp and detailed visuals. This resolution is ideal for daily computing tasks, allowing for comfortable multitasking with ample screen real estate. The 5ms response time reduces ghosting and blurring, making it an excellent option for accessing fast-moving content, like videos and games.

The monitor boasts a bright 250 cd/m² brightness rating, ensuring visibility even in well-lit environments. Coupled with a contrast ratio of 1000:1, the Philips 190X5 produces deep blacks and brilliant whites, enhancing the overall image quality. Whether you're working on spreadsheets or watching videos, the colors appear vivid, providing an enjoyable viewing experience.

In terms of connectivity, the Philips 190X5 is equipped with a variety of input options, including VGA and DVI interfaces. This flexibility allows users to connect the monitor to different devices, from PCs to laptops, ensuring compatibility with numerous systems.

The ergonomic design of the Philips 190X5 is another noteworthy characteristic. It features a slim profile and a modern stand that enables tilting adjustments for optimal viewing angles. This is particularly beneficial for reducing neck strain during prolonged use. The monitor also adheres to energy-saving standards, being energy-efficient while still delivering high performance.

Additional features include SmartContrast technology, which dynamically adjusts the contrast based on the content displayed on the screen, enhancing details regardless of the media type. This commitment to both performance and sustainability meets the needs of environmentally conscious users.

The Philips 190X5 combines a host of practical features, high definition performance, and a modern aesthetic, making it an excellent choice for anyone seeking reliability and quality in their display technology.
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