User manual PHILIPS 170X5FB

[. . . ] e-Manual Philips LCD Monitor Electronic User's Manual file:///D|/My%20Documents/dfu/X_model/english/170x5/index. htm2004-10-22 3:26:48 PM Safety and Troubleshooting Information · Safety Precautions and Maintenance · Installation Locations · FAQs · Troubleshooting · Regulatory Information · Other Related Information Safety and Troubleshooting Information Safety precautions and maintenance WARNING: Use of controls, adjustments or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards and/or mechanical hazards. Read and follow these instructions when connecting and using your computer monitor: q q q q q q q q q q q q q Unplug the monitor if you are not going to use it for an extensive period of time. Unplug the monitor if you need to clean it with a slightly damp cloth. The screen may be wiped with a dry cloth when the power is off. However, never use alcohol, solvents or ammonia-based liquids. [. . . ] The TFT drain of each cell is connected to the electrode. The molecular arrangement of liquid crystal elements differ according to 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 the 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 through 90 degrees. In this case, light that comes through the top polarized panel may not go through the polarized panel at the bottom. file:///D|/My%20Documents/dfu/X_model/english/170x5/safety/saf_faq. htm (7 of 9)2004-10-22 3:28:54 PM 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?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. [. . . ] Industrial Vallejo C. P. 02300, -Mexico, D. F. Phone: (05)-3687788 / 9180050462 Fax : (05)-7284272 PARAGUAY Philips del Paraguay S. A. Avenida Artigas 1513 Casilla de Correos 605 Asuncion Phone: (021)-211666 Fax : (021)-213007 PERU Philips Peruana S. A. Customer Desk Comandante Espinar 719 Casilla 1841 Limab18 Phone: (01)-2136200 Fax : (01)-2136276 URUGUAY Ind. Philips del Uruguay S. A. [. . . ]