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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150S3H specifications

The Philips 150S3H is a versatile and reliable monitor designed to cater to both business and personal use. This 15-inch LCD monitor boasts several features that enhance user experience, making it an attractive option for a wide range of applications.

One of the standout features of the Philips 150S3H is its excellent display technology. With a resolution of 1024 x 768 pixels, it offers sharp images and clear text, ensuring that users can enjoy high-quality visuals whether they are working on documents, browsing the web, or watching videos. The monitor supports a 75Hz refresh rate, providing smooth motion and reducing screen flicker, which is particularly beneficial during extended use.

In terms of connectivity, the Philips 150S3H comes equipped with both VGA and DVI inputs, ensuring compatibility with various devices such as computers, laptops, and even some gaming consoles. This flexibility makes it an ideal choice for professionals who require a dependable monitor for presentations as well as for home users looking for an upgrade.

The monitor is designed with user comfort in mind. It features a height-adjustable stand, allowing users to customize the screen’s position for optimal viewing angles, thereby promoting better posture and reducing eye strain. Additionally, the anti-glare coating helps to minimize reflections and distractions, making it suitable for well-lit environments.

Another notable characteristic of the Philips 150S3H is its energy efficiency. Philips is known for prioritizing sustainability, and this model is no exception. It meets energy-saving standards, allowing users to reduce their power consumption without compromising performance. The monitor is also equipped with smart features that adjust brightness levels based on ambient light conditions, further contributing to energy savings.

The build quality of the Philips 150S3H is robust, ensuring durability for everyday use. Its sleek design and compact form factor make it a perfect fit for minimalistic setups or limited desk spaces. With a focus on user-friendly operation and reliability, this monitor stands out as a practical choice for both casual and professional environments.

In summary, the Philips 150S3H is a well-rounded monitor that offers excellent display quality, versatile connectivity options, ergonomic features, and energy efficiency. Whether for work or play, it meets the needs of diverse users, making it a valuable addition to any workspace.
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