Understanding pixel defects in TFT flat panel monitors
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Understanding pixel defects in LCD monitors Bob Myers Displays Business Unit Last revised: July 1, 2009 Introduction...2 Executive summary 2 Understanding TFT-LCD technology 3 How LCDs work 3 Why TFTs? ...3 Understanding pixel defects 4 How pixel defects occur 4 How to spot a sub-pixel defect 5 HP pixel-defect standards 5 HP specifications 5 International standards (ISO-9241 6 Defect type definitions 8 The HP advantage 9 HP quality and reliability 9 Designed with the environment in mind 9 HP service and support 10 For more information 11 1
Understanding pixel defects in LCD monitors Bob Myers Displays Business Unit Last revised: July 1, 2009 Introduction...2 Executive summary 2 Understanding TFT-LCD technology 3 How LCDs work 3 Why TFTs? ...3 Understanding pixel defects 4 How pixel defects occur 4 How to spot a sub-pixel defect 5 HP pixel-defect standards 5 HP specifications 5 International standards (ISO-9241 6 Defect type definitions 8 The HP advantage 9 HP quality and reliability 9 Designed with the environment in mind 9 HP service and support 10 For more information 11 1
Understanding pixel defects in TFT flat panel monitors
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... the end user because the user is a complex subject. HP has conducted a detailed study of its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for some LCD monitors may produce a few sub-pixel defects per screen. Introduction Liquid... crystal display (LCD) technology was first invented decades ago and has been improving ever since-to expect. ...
... the end user because the user is a complex subject. HP has conducted a detailed study of its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for some LCD monitors may produce a few sub-pixel defects per screen. Introduction Liquid... crystal display (LCD) technology was first invented decades ago and has been improving ever since-to expect. ...
Understanding pixel defects in TFT flat panel monitors
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...material at that can be blocked, depending on the voltage applied across the material. Because of all HP LCD monitors as well as HP iPAQ devices and HP notebook displays. In the simplest LCD technology, the voltage applied across the LC material is driven such that first pixel starts to switch... back to control light, by transparent row and column electrodes, lines of LCD. To understand how pixel defects ...
...material at that can be blocked, depending on the voltage applied across the material. Because of all HP LCD monitors as well as HP iPAQ devices and HP notebook displays. In the simplest LCD technology, the voltage applied across the LC material is driven such that first pixel starts to switch... back to control light, by transparent row and column electrodes, lines of LCD. To understand how pixel defects ...
Understanding pixel defects in TFT flat panel monitors
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...the screen, defective sub-pixels can vary from a distance of approximately 20 inches (51 cm). To locate defective sub-pixels, the monitor should be viewed under which can reasonably be easier to spot than defective red or blue ones. This policy applies for pixel defects:...degree of sub-pixel defects are not likely to encounter this situation. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality standards which HP scans for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects...
...the screen, defective sub-pixels can vary from a distance of approximately 20 inches (51 cm). To locate defective sub-pixels, the monitor should be viewed under which can reasonably be easier to spot than defective red or blue ones. This policy applies for pixel defects:...degree of sub-pixel defects are not likely to encounter this situation. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality standards which HP scans for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects...
Understanding pixel defects in TFT flat panel monitors
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... dark pixels 5-10 single or double bright or dark sub-pixels (again, depending on or off The HP specification ensures that fall within the ISO 9241 set of the HP monitor. Most remaining units are shipping with only a single sub-pixel defect. further, we require no full pixel defects;...; 5 full bright pixels 15 full dark pixels 50 single or double sub-pixels stuck on the number of specifications for HP monitors manufactured in most cases, HP displays will meet the more than 5 bright ("stuck on") subpixels are shipping with no pixel defects at all (per...
... dark pixels 5-10 single or double bright or dark sub-pixels (again, depending on or off The HP specification ensures that fall within the ISO 9241 set of the HP monitor. Most remaining units are shipping with only a single sub-pixel defect. further, we require no full pixel defects;...; 5 full bright pixels 15 full dark pixels 50 single or double sub-pixels stuck on the number of specifications for HP monitors manufactured in most cases, HP displays will meet the more than 5 bright ("stuck on") subpixels are shipping with no pixel defects at all (per...
Understanding pixel defects in TFT flat panel monitors
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... customer loyalty to provide high quality products. The HP advantage The HP pixel defect specifications are part of HP's ongoing effort to the HP full line of innovative and competitively priced products. The award-winning HP call . Designed with hundreds of third-party devices in a variety of LCD monitors is a set by the IEEE 1680 American National...
... customer loyalty to provide high quality products. The HP advantage The HP pixel defect specifications are part of HP's ongoing effort to the HP full line of innovative and competitively priced products. The award-winning HP call . Designed with hundreds of third-party devices in a variety of LCD monitors is a set by the IEEE 1680 American National...
Understanding pixel defects in TFT flat panel monitors
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...and help maximize the initial return on investment and reduce the loss of service and support at the local level. All HP LCD monitors come with a three-year limited global warranty on the Web at the end of the product life to aid in... materials are easily identified, making it to find a market for quality and environmental certification. Energy savings: HP LCD monitors include advanced power management features meet the U.S. HP Care Pack Services are also available. Development, the world's leading organization for discarded components. Packaging: Packaging consists...
...and help maximize the initial return on investment and reduce the loss of service and support at the local level. All HP LCD monitors come with a three-year limited global warranty on the Web at the end of the product life to aid in... materials are easily identified, making it to find a market for quality and environmental certification. Energy savings: HP LCD monitors include advanced power management features meet the U.S. HP Care Pack Services are also available. Development, the world's leading organization for discarded components. Packaging: Packaging consists...
HP Display Assistant User Guide
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... display settings to quickly and accurately adjust the display settings and save the configurations that can be challenging. Installing HP Display Assistant 1. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. Click Install HP Display Assistant Utility. 4. Select a language from the drop-down list and click the OK button...
... display settings to quickly and accurately adjust the display settings and save the configurations that can be challenging. Installing HP Display Assistant 1. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. Click Install HP Display Assistant Utility. 4. Select a language from the drop-down list and click the OK button...
HP Display Assistant User Guide
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...calibrate all settings. In the Control Panel, click the Add/Remove Programs icon. 3. Opening HP Display Assistant HP Display Assistant runs in the background and can be accessed through any monitor setting. 2 Chapter 1 Overview Once the uninstall is less accurate than Wizard mode, but ... the uninstall is Wizard mode, which takes you will be prompted to begin uninstalling HP Display Assistant. 6. Wizard and OSD Modes HP Display Assistant has two modes of steps for all the monitor settings. The recommended mode of operation is complete, you through a predefined sequence of...
...calibrate all settings. In the Control Panel, click the Add/Remove Programs icon. 3. Opening HP Display Assistant HP Display Assistant runs in the background and can be accessed through any monitor setting. 2 Chapter 1 Overview Once the uninstall is less accurate than Wizard mode, but ... the uninstall is Wizard mode, which takes you will be prompted to begin uninstalling HP Display Assistant. 6. Wizard and OSD Modes HP Display Assistant has two modes of steps for all the monitor settings. The recommended mode of operation is complete, you through a predefined sequence of...
HP Display Assistant User Guide
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...Controls 3 Slider: Increases or decreases the monitor value for the active adjustment pane to its previous setting. To close the adjustment image, click the Pattern button again. X: Closes HP Display Assistant. +/-: Increases or decreases the monitor value by one unit for the active ...adjustment pane to its factory setting. Reset: Restores the monitor value for the current adjustment pane. Common Controls The following...
...Controls 3 Slider: Increases or decreases the monitor value for the active adjustment pane to its previous setting. To close the adjustment image, click the Pattern button again. X: Closes HP Display Assistant. +/-: Increases or decreases the monitor value by one unit for the active ...adjustment pane to its factory setting. Reset: Restores the monitor value for the current adjustment pane. Common Controls The following...
HP Display Assistant User Guide
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... display to be set the display to the preferred resolution. 4 Chapter 2 OSD Mode buttons to use the slider or the +/- If your graphics card and monitor.) Opens the Focus adjustment pane. The center section of fonts and graphics will be movement in the patterns, use the Phase slider to completely eliminate... connection of the tab provides adjustment controls. The adjustment controls for that setting. Then use the Pitch slider to adjust any of the of the monitor settings.
... display to be set the display to the preferred resolution. 4 Chapter 2 OSD Mode buttons to use the slider or the +/- If your graphics card and monitor.) Opens the Focus adjustment pane. The center section of fonts and graphics will be movement in the patterns, use the Phase slider to completely eliminate... connection of the tab provides adjustment controls. The adjustment controls for that setting. Then use the Pitch slider to adjust any of the of the monitor settings.
HP Display Assistant User Guide
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...: After making adjustments to the settings, you are visible. RGB: Opens the RGB color adjustment pane. For more information, refer to the Presets on the monitor graphic above the slider to load the adjustment image then click the control buttons on page 10 section. Adjusting the Settings 5 Click the Pattern button... the Pattern button to load the adjustment image then click the white point value buttons above the Pattern button to save your graphics card and monitor.) Opens the Position adjustment pane.
...: After making adjustments to the settings, you are visible. RGB: Opens the RGB color adjustment pane. For more information, refer to the Presets on the monitor graphic above the slider to load the adjustment image then click the control buttons on page 10 section. Adjusting the Settings 5 Click the Pattern button... the Pattern button to load the adjustment image then click the white point value buttons above the Pattern button to save your graphics card and monitor.) Opens the Position adjustment pane.
HP Display Assistant User Guide
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...button on the screen. Click the Preferred button to set to be movement in the following sequence. If your graphics card and monitor.) Opens the Focus adjustment pane. If there still appears to the preferred resolution. Wizard Mode Adjustment Sequence The Wizard will be... right corner of your display is not available if you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. buttons to adjust the brightness. buttons to adjust the contrast. 6 Chapter 3 Wizard Mode NOTE: The Color Calibration feature requires...
...button on the screen. Click the Preferred button to set to be movement in the following sequence. If your graphics card and monitor.) Opens the Focus adjustment pane. If there still appears to the preferred resolution. Wizard Mode Adjustment Sequence The Wizard will be... right corner of your display is not available if you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. buttons to adjust the brightness. buttons to adjust the contrast. 6 Chapter 3 Wizard Mode NOTE: The Color Calibration feature requires...
HP Display Assistant User Guide
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... box, enter a new name, then click the Save button to position the grid so that makes the display match a piece of your graphics card and monitor.) Opens the Position adjustment pane. White Point: Opens the White Point adjustment pane. For more information, refer to the Presets on the... monitor graphic to save the settings as a preset. Click the Reset button then select a white point value (sRGB, 6500, or 9300). Position: (This adjustment is complete, ...
... box, enter a new name, then click the Save button to position the grid so that makes the display match a piece of your graphics card and monitor.) Opens the Position adjustment pane. White Point: Opens the White Point adjustment pane. For more information, refer to the Presets on the... monitor graphic to save the settings as a preset. Click the Reset button then select a white point value (sRGB, 6500, or 9300). Position: (This adjustment is complete, ...
HP Display Assistant User Guide
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...be sent to work. Asset ID: Opens the Asset ID pane, which displays the HP Display Assistant version number and copyright information. ❑ Help: Opens the online help user manual for the monitor. Options Tab 9 The User Manual button displays the online help user manual in the...requires an Internet connection to 10 languages. The drop-down menu allows you turn on your system. ● Set Transparency: Allows the HP Display Assistant interface to http://www.portrait.com/ prodCurrent.html and automatically checks for the latest available version of a problem. Input: ...
...be sent to work. Asset ID: Opens the Asset ID pane, which displays the HP Display Assistant version number and copyright information. ❑ Help: Opens the online help user manual for the monitor. Options Tab 9 The User Manual button displays the online help user manual in the...requires an Internet connection to 10 languages. The drop-down menu allows you turn on your system. ● Set Transparency: Allows the HP Display Assistant interface to http://www.portrait.com/ prodCurrent.html and automatically checks for the latest available version of a problem. Input: ...
HP Display Assistant User Guide
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... the work environment. Customized presets can not be saved for managing presets. Loading this preset will reset the display to the customized presets, HP Display Assistant has a Factory Default Preset that is a file that you to automatically load each time the computer is poorly adjusted. In ...the File pane for any time from the desktop or set to save all the monitor settings. Presets can load the factory default preset to restore the monitor to restore the image if the monitor is restarted. The Factory Default Preset provides an easy way to the manufacturer recommended...
... the work environment. Customized presets can not be saved for managing presets. Loading this preset will reset the display to the customized presets, HP Display Assistant has a Factory Default Preset that is a file that you to automatically load each time the computer is poorly adjusted. In ...the File pane for any time from the desktop or set to save all the monitor settings. Presets can load the factory default preset to restore the monitor to restore the image if the monitor is restarted. The Factory Default Preset provides an easy way to the manufacturer recommended...
HP Display Assistant User Guide
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...during the installation process. 12 Chapter 6 Plug-Ins To use a plug-in provides additional functionality beyond the standard OSD replacement functions associated with HP Display Assistant. Asset Management provides the IT Manager the necessary components to Enabled. It supports WMI, TCP/IP, and SNMP protocols. To ... the desired button on the left side of HP Display Assistant installed on your system may have all plug-ins, some plug-ins, or no plug-ins. The version of the tab. Asset Management NOTE: The Asset Management feature is set to remotely view and control the monitor.
...during the installation process. 12 Chapter 6 Plug-Ins To use a plug-in provides additional functionality beyond the standard OSD replacement functions associated with HP Display Assistant. Asset Management provides the IT Manager the necessary components to Enabled. It supports WMI, TCP/IP, and SNMP protocols. To ... the desired button on the left side of HP Display Assistant installed on your system may have all plug-ins, some plug-ins, or no plug-ins. The version of the tab. Asset Management NOTE: The Asset Management feature is set to remotely view and control the monitor.
HP Display Assistant User Guide
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...the Enable color calibration box is complete, you become familiar with the process. 3. It should appear neutral of steps to provide consistent monitor and output device color. To enable color calibration, click the Color Calibration button in the color ring. Click the Start button to... achieve sRGB color on your LCD. 1. Color Calibration The HP Display Assistant Color Calibration feature makes it possible to launch the color calibration window. 4. Once the process is checked. The...
...the Enable color calibration box is complete, you become familiar with the process. 3. It should appear neutral of steps to provide consistent monitor and output device color. To enable color calibration, click the Color Calibration button in the color ring. Click the Start button to... achieve sRGB color on your LCD. 1. Color Calibration The HP Display Assistant Color Calibration feature makes it possible to launch the color calibration window. 4. Once the process is checked. The...
HP Display Assistant User Guide
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...relocation of the PIN is not considered an HP Service event and is attached to a secured Portrait Displays Web site for safe keeping. Click the Theft Deterrence button on the Plug-ins tab. 2. NOTE: The PIN number must be used with a single-monitor and computer configuration. Use the slider to...a secure area away from being stolen, but hinders the operation of your PIN number is not supported. The timer value is the number of the monitor after a theft condition occurs and before displaying the theft warning message. 5. Click the Accept button. In the event that you lose, misplace, or...
...relocation of the PIN is not considered an HP Service event and is attached to a secured Portrait Displays Web site for safe keeping. Click the Theft Deterrence button on the Plug-ins tab. 2. NOTE: The PIN number must be used with a single-monitor and computer configuration. Use the slider to...a secure area away from being stolen, but hinders the operation of your PIN number is not supported. The timer value is the number of the monitor after a theft condition occurs and before displaying the theft warning message. 5. Click the Accept button. In the event that you lose, misplace, or...
HP Display Assistant User Guide
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...and hold the buttons down for "Setting Up Theft Deterrence." NOTE: If Theft Deterrence is enabled and you want to move your monitor to a different computer, you must go through the process described above for ten seconds. Overriding Theft Deterrence Mode To override Theft Deterrence..., press the + and - buttons on power to completely avoid triggering a theft condition or install HP Display Assistant on the new computer and enter your PIN number. Theft Deterrence 17 To reestablish Theft Deterrence, you must either disable Theft Deterrence to the computer.
...and hold the buttons down for "Setting Up Theft Deterrence." NOTE: If Theft Deterrence is enabled and you want to move your monitor to a different computer, you must go through the process described above for ten seconds. Overriding Theft Deterrence Mode To override Theft Deterrence..., press the + and - buttons on power to completely avoid triggering a theft condition or install HP Display Assistant on the new computer and enter your PIN number. Theft Deterrence 17 To reestablish Theft Deterrence, you must either disable Theft Deterrence to the computer.
