FAQs (Frequently Asked Questions)

Q:What differentiates passive matrix LCDs from active matrix LCDs?

A:An LCD is made with either a passive matrix or an active matrix display grid. An active matrix has

a transistor located at each pixel intersection, requiring less current to control the luminance of a pixel. For this reason, the current in an active matrix display can be switched on and off more frequently, improving the screen refresh time (your mouse pointer will appear to move more smoothly across the screen, for example). The passive matrix LCD has a grid of conductors with pixels located at each intersection in the grid.

Q:How does a TFT LCD Panel work?

A:On each column and row of the TFT LCD panel, a data source drive and a gate drive and attached

respectively. The TFT drain of each cell is connected to the electrode. The molecular arrangement of liquid crystal elements differs depending on whether it is impressed with voltage or not. It varies the direction of polarized light and the amount of light by letting it through different arrays of liquid crystal elements. When two polarized filters are arranged vertically on a polarized light pole, the light that passes through the upper polarized panel is turned 90 degrees along with spiral structure of the liquid crystal molecules, and goes through the polarized filter at the bottom. When impressed with voltage, liquid crystal molecules are arranged vertically from the original spiral structure and the direction of the light is not turned in 90 degrees. In this case, light that comes through the top polarized panel may not go through the polarized panel at the bottom.

Q:What are the advantages of TFT LCD compared to 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 analog RGB signal. A TFT LCD monitor is a device displaying an input image by operating 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 in with liquid crystal. When each cell is connected with electrodes and impressed with voltage, molecular structure of liquid crystal is altered and controls amount of inlet lighting to display images. A TFT LCD has several advantages over a CRT, since it can be very thin and it does not have flickering because it does not use scanning method.

Q:Vertical frequency of 60Hz optimal for an LCD monitor, why?

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 higher resolution may not be available without additional software processing. The panel is designed to optimize display for 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.

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180P2M/180P2G specifications

The Philips 180P2M and 180P2G are two advanced models in the Philips monitor lineup, designed for users who prioritize both functionality and aesthetics in their display technology. These models are particularly well-regarded for their commitment to performance, ergonomic design, and eco-friendliness, making them suitable for a variety of applications from home offices to professional workspaces.

One of the standout features of the Philips 180P2M and 180P2G is their impressive display quality. Both monitors come with a 17-inch flat-panel LCD screen, featuring a resolution of 1280 x 1024 pixels, which delivers sharp images and vibrant colors. The high contrast ratio ensures deeper blacks and brighter whites, enhancing the overall viewing experience, whether for detailed graphic design, gaming, or general use.

In terms of connectivity, the Philips 180P2M and 180P2G are equipped with multiple input options including VGA and DVI connections, making them compatible with various devices such as computers, laptops, and even gaming consoles. The inclusion of integrated stereo speakers in both models adds an extra layer of convenience, eliminating the need for external speakers for casual audio tasks.

One of the key technological features of these monitors is the SmartContrast technology, which adjusts the contrast of images dynamically based on the content displayed. This ensures that users enjoy an optimal viewing experience in a variety of lighting conditions, enhancing the visibility of text and images during any activity.

Ergonomically, the Philips 180P2M and 180P2G models are designed with user comfort in mind. They offer height adjustment, tilting capabilities, and swivel functions, allowing users to position the monitors according to their personal comfort needs. This flexibility can help reduce neck and back strain during long hours of usage, promoting a healthier working environment.

Energy efficiency is another fundamental characteristic of these Philips monitors. Both models carry the Energy Star certification, ensuring they consume less power without compromising performance. This eco-friendly approach is beneficial not just for the environment but also for users who are conscious of energy costs.

Overall, the Philips 180P2M and 180P2G monitors cater to a wide range of users with their combination of high-quality display, versatile connectivity, ergonomic design, and energy efficiency. Whether for professional settings or personal use, these monitors stand out as reliable and sophisticated solutions in the competitive market of computer displays.
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