FAQs Frequently Asked Questions | Philips 170S2B manual

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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170S2B specifications

The Philips 170S2B is a prominent model in the realm of budget-friendly computer monitors, providing users with a blend of performance, reliability, and affordability. Designed for both home and office use, this monitor features a 17-inch TFT LCD display that delivers bright and clear images, making it suitable for everyday tasks such as browsing, document editing, and watching videos.

One of the standout features of the Philips 170S2B is its resolution. Offering a native resolution of 1280 x 1024 pixels, the monitor provides excellent clarity, ensuring that text appears sharp, and colors are vibrant. With a 4:3 aspect ratio, it is particularly well-suited for office applications where a standard screen shape is advantageous.

The monitor employs advanced technology to enhance the viewing experience. Utilizing a quick response time of 5 ms, the Philips 170S2B minimizes ghosting and motion blur, making it a suitable option for casual gaming and video playback. In addition, the monitor supports an impressive brightness level, typically around 250 cd/m², which helps to ensure visibility in various lighting conditions.

Equipped with a contrast ratio of 1000:1, the Philips 170S2B enhances the distinction between light and dark elements on the screen. This characteristic improves overall image quality, enriching visual content and making it easier to view detailed images or graphics in various applications. The viewing angles, rated at 160° horizontally and vertically, allow for better visibility from different positions, which is beneficial during collaborative work or group presentations.

Another significant aspect of the Philips 170S2B is its eco-friendly design. Complying with Energy Star standards, the monitor incorporates energy-saving features that help reduce power consumption. This not only lowers electricity bills but also contributes to a smaller carbon footprint, appealing to environmentally conscious users.

The ergonomic design of the Philips 170S2B offers tilt capability, allowing users to adjust the angle of the screen to suit their viewing preferences and reduce neck strain. In terms of connectivity, the monitor typically features VGA or DVI inputs, making it compatible with a wide range of devices.

In conclusion, the Philips 170S2B is a reliable and efficient monitor that caters to a diverse audience, from casual users to business professionals. Its combination of image quality, energy efficiency, and user-friendly features positions it as a valuable choice in the competitive landscape of computer monitors.