FAQs (Frequently Asked Questions)

LCD Panel Technology

Q:What is a Liquid Crystal Display?

A:A Liquid Crystal Display (LCD) is an optical device that is commonly used to display ASCII characters and images on digital items such as watches, calculators, portable game consoles, etc. LCD is the technology used for displays in notebooks and other small computers. Like light-emitting diode and gas-plasma technologies, LCD allows displays to be much thinner than cathode ray tube (CRT) technology. LCD consumes much less power than LED and gas-displays because it works on the principle of blocking light rather than emitting it.

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: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

file:///D/EDFU/LCD/170C7/manual/english/170c7/safety/saf_faq.htm (6 of 8)2006-07-28 11:02:44 AM

Page 8 Page 10
Page 9
Image 9
Philips 170C7 user manual LCD Panel Technology, What is a Liquid Crystal Display?
Page 8 Page 10

170C7 specifications

The Philips 170C7 is a remarkable LCD monitor that has made a name for itself in the realm of personal and professional computing. Launched as part of Philips’ C7 series, this model is designed to deliver exceptional performance while maintaining an aesthetic appeal that fits seamlessly into any workspace.

One of the standout features of the Philips 170C7 is its impressive display quality. The monitor boasts a 17-inch screen size with a resolution of 1280x1024 pixels, delivering sharp images and vibrant colors that cater to both professional applications and everyday tasks. The 4:3 aspect ratio is particularly effective for users in fields such as graphic design and data analysis, allowing for optimal viewing of spreadsheets and design layouts without the need for excessive scrolling.

The Philips 170C7 employs advanced technology to enhance the viewing experience. The monitor features a fast response time, which minimizes motion blur and ghosting during fast-paced video playback or gaming sessions. Additionally, the brightness level of 250 cd/m² ensures that images are bright and clear, while the 1000:1 contrast ratio provides deep blacks and bright whites, allowing for a more dynamic range of colors.

Ergonomics is another key characteristic of the Philips 170C7. It is designed with user comfort in mind, featuring adjustable height and tilt capabilities. This ensures that users can find the perfect viewing angle, reducing neck and eye strain during extended use. The monitor is also equipped with VESA mount compatibility, allowing users to customize their workstation setup with ease.

Connectivity options for the Philips 170C7 are diverse, with multiple input ports including VGA and DVI, enabling it to connect with a wide array of devices. This flexibility lends itself well to a variety of environments, from home offices to business settings.

In addition to its technical specifications, the Philips 170C7 is built with energy efficiency in mind. It complies with international energy standards, making it an environmentally friendly choice that helps to lower electricity costs.

Overall, the Philips 170C7 stands out as a versatile and high-quality monitor that caters to a broad audience. With its blend of advanced features, ergonomic design, and energy efficiency, it remains a reputable choice for both casual users and professionals alike.
Top Page Image Contents