Philips 170B2M Electronic User's Manual

Also see for 150B2: Technical specifications Technical specifications Electronic user's manual Electronic user's manual Electronic user's manual

Contents

Q: What kind of wide-angle technology is available? How does it work?A: The TFT LCD panel is an element controls/displays inlet of a backlight using the dual-refractionof liquid crystal. Using the property that the projection of inlet light refracts toward the major axis ofthe liquid element, it controls the direction of inlet light and displays it. Since the refraction ratio ofinlet light on liquid crystal varies with the inlet angle of the light, the viewing angle of a TFT is muchnarrow than that of a CDT. Usually, viewing angle refers to the point where the contrast ration is 10.Many ways to widen the viewing angle are currently being developed the most commonly usedapproach is to use a wide viewing angle film, which widens viewing angle by varying the refractionratio. Also IPS (In Plane Switching) or MVA (Multi Vertical Aligned) is used for wider viewing angle.Q: Why is there no flicker on an LCD Monitor?A: Technically speaking, LCDs do flicker, but the cause of the phenomenon is different from that ofCRT monitor -- and has no impact of ease of viewing. Flickering in a LCD monitor refers to usuallyundetectable luminance caused by the difference between positive and negative voltage. On theother hand, CRT flickering that can irritate the human eye comes when the on/off action of theflorescent object becomes visible. Since the reaction speed of liquid crystal in a LCD panel is muchslower, this troublesome form of flickering is not present in LCD display.Q: Why is an LCD monitor virtually free of Electro Magnetic Interference?A: Unlike a CRT, an LCD monitor does not have key parts that generate Electro MagneticInterference, especially magnetic fields. Also, since LCD display utilizes relatively low power, itspower supply is extremely quiet.RETURN TO TOP OF THE PAGEErgonomics, Ecology, and Safety StandardsQ: What is CE mark?A: The CE (Conformité Européenne) marking is required to be displayed on the regulated productplaced for sale on the European market. This mark "CE" means that a product complies with anapplicable European Directive. A European Directive is a European "Law" which relates to health,safety, environment and consumer Protection, much the same as the U.S. National Electrical Codeand UL Standards.Q: Does the LCD monitor conform to general safety standards?FAQs (Frequently Asked Questions)file:///D|/Grace/K1/english/170b2m/safety/saf_faq.htm (7 of 8) [11/22/2001 1:37:50 PM]