Philips 2.31E+03 user manual What is a Liquid Crystal Display?

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FAQs (Frequently Asked Questions)

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

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Contents Philips LCD Monitor Electronic User’s Manual Maintenance Safety and Troubleshooting InformationSafety precautions and maintenance OperationService Return to TOPPage FAQs Frequently Asked Questions General FAQsWhat is the Auto function? What if I get lost when I am making monitor adjustments?What does the Refresh Rate mean for LCD? QCan I change the color setting of my monitor? How should I clean the LCD surface?Will the LCD screen be resistant to scratches? How do LCDs compare to CRTs in terms of radiation? Screen AdjustmentsCompatibility with other Peripherals Can I connect my LCD monitor to any PC, workstation or Mac?LCD Panel Technology What is USB Universal Serial Bus?What is a USB hub ? Are Philips LCD monitors Plug-and-Play?What is a Liquid Crystal Display? What are the advantages of TFT LCD compared with CRT?Why is there no flicker on an LCD Monitor? What is the CE mark? Ergonomics, Ecology and Safety StandardsDoes the LCD monitor conform to general safety standards? Page Troubleshooting Common ProblemsImaging Problems Return to TOP Regulatory Information Waste Electrical and Electronic Equipment-WEEE CE Declaration of ConformityEnergy Star Declaration Federal Communications Commission FCC Notice U.S. OnlyFCC Declaration of Conformity Commission Federale de la Communication FCC Declaration Polish Center for Testing and Certification NoticeEN 55022 Compliance Czech Republic Only North Europe Nordic Countries Information VarningBsmi Notice Taiwan Only Ergonomie Hinweis nur DeutschlandEnd-of-Life Disposal Information for UK onlyHow to connect a plug China RoHS China Energy Efficiency Label 中國能效 implementReturn to TOP Information for Users in the U. S Other Related InformationInformation for Users outside the U.S About This Guide About This ManualNotational Descriptions Return to TOP Page Your LCD monitor SmartImageProduct Information SmartContrast Technical Specifications Lead-free ProductResolution & Preset Modes Video60.000 Automatic Power Saving Physical SpecificationsPin Signal Assignment Pin AssignmentProduct Views Physical FunctionTilt Philips Pixel Defect Policy Philips Flat Panel Monitors Pixel Defect PolicyTypes of Pixel Defects Proximity of Pixel Defects Total DOT Defects Acceptable Level SmartManage & SmartControl II Selective Models IntroductionSmartManage Features and Benefits System support and requirement Philips SmartControlInstaller Install Shield Legal Installer Install Shield Program Files Installer Installation Process Page Page Start to use Tab Heading Sub Menu Display in Analog Display in Digital Page Page Color menu Page First color Calibration Screen SmartManage SmartManage Click on No button takes user to the following screen Disable Theft button opens the following pane SmartManage SmartManage SmartManage Task Tray Menu Enabled Task Tray Menu Disabled Return to TOP Page Installing Your LCD Monitor Front View Product DescriptionRear View Optimizing PerformanceReturn to TOP Accessory Pack Connecting to Your PCConnecting to Your PC Connecting to Your PC Return to TOP Base Attach the Base StandDetach the Base Stand Return to TOP Getting Started For WindowsFor Windows XP For Windows VistaReturn to TOP Description of the On Screen Display On-Screen DisplayDVI Input available for selective models OSD Tree Resolution notification Customer Care & Warranty North America Canada USAF1rst Choice Conexión Información Bulgaria Consumer Information CentersBelarus Czech RepublicEstonia CroatiaHungary Romania LatviaLithuania Serbia & MontenegroTurkey SloveniaRussia UkraineBrasil AntillesArgentina ChilePeru MexicoParaguay UruguayAustralia VenezuelaCanada NEW ZealandHong Kong BangladeshChina IndiaIndonesia KoreaPakistan MalaysiaPhilippines Thailand SingaporeTaiwan MoroccoSouth Africa DubaiAmorphous silicon a-Si GlossaryActive matrix Aspect ratioCCFLcold cathode fluorescent light Color temperatureBrightness ChromaticityContrast Contrast ratioGamma Energy Star Computers ProgramGrayscale LCD liquid crystal display IPS In Plane SwitchingHue Liquid crystalPixel LuminanceNit PolarizerSmartControl Refresh rateSmartContrast SmartImageSmartManage Lite TFTthin film transistorTrueVision USB or Universal Serial BusDevice Vertical refresh rate DownstreamDownload and Print Download instructionsPrinting instructions