Philips 190B9CS/05 Electronic User's Manual

Also see for 190B9 - Brilliance - 19" LCD Monitor: User manual Electronic user's manual

Contents

The light source for a transmissive LCD. There are two techniques used in nowaday LCD designs. Most TFT LCD panelsuse CCFLs (cold cathode fluorescent light) and a diffuser panel directly behind the liquid crystal layer. New technologyusing Light Emitting Diodes (LED) are still under development.BrightnessThe dimension of color that is referred to an achromatic scale, ranging from black to white, also called lightness orluminous reflectance. Because of confusion with saturation, the use of this term should be discouraged.RETURN TO TOP OF THE PAGECCCFL(cold cathode fluorescent light)These are the fluorescent light tubes providing the light for the LCD module. These tubes are generally very thin,approximately 2 mm in diameter.ChromaticityThat part of color specification, which does not involve illuminance. Chromaticity is two-dimensional and specified by pairsof numbers such as dominant wavelength and purity.CIE (Commission International de I'Eclairage)The International Commission on Illumination, the primary international organization concerned with color and colormeasurement.Color temperatureA measurement of the color of light radiated by an object while it is being heated. This measurement is express in termsof absolute scale, (degrees Kelvin). Lower Kelvin temperatures such as 2400° K are red; higher temperatures such as9300° K are blue. Neutral temperature is white, at 6504° K. Philips monitors generally offers 9300° K, 6500° K, and userdefine.ContrastThe luminance variation between light and dark areas in an image.