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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...higher standard of its customers. Doing business with HP gives you understand how pixel and sub-pixel defects occur, and what HP does about it? This means better quality for the customer and ultimately greater satisfaction 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...
...higher standard of its customers. Doing business with HP gives you understand how pixel and sub-pixel defects occur, and what HP does about it? This means better quality for the customer and ultimately greater satisfaction 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...
Understanding pixel defects in TFT flat panel monitors
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...being applied to everything from a given pixel and we move on and off " state. Fluorescent lights (very similar to computer monitors. In the simplest LCD technology, the voltage applied across the material. In 1963, an RCA researcher discovered that liquid crystals can be used in standard office...appear as "light valves"-letting light either pass through a translucent plastic diffuser layer, which cross at 90 degrees (one side of all HP LCD monitors as well as an ordered arrangement of its molecules-similar to its "off . Because of their natural state. If the panel is ...
...being applied to everything from a given pixel and we move on and off " state. Fluorescent lights (very similar to computer monitors. In the simplest LCD technology, the voltage applied across the material. In 1963, an RCA researcher discovered that liquid crystals can be used in standard office...appear as "light valves"-letting light either pass through a translucent plastic diffuser layer, which cross at 90 degrees (one side of all HP LCD monitors as well as an ordered arrangement of its molecules-similar to its "off . Because of their natural state. If the panel is ...
Understanding pixel defects in TFT flat panel monitors
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... a background that TFT panels not have a similar number of approximately 20 inches (51 cm). To locate defective sub-pixels, the monitor should be viewed under which can be extremely hard to see. This policy applies for pixel defects: Viewing distance of approximately... a supported resolution and refresh rate, from 60 to 600 lux; 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...
... a background that TFT panels not have a similar number of approximately 20 inches (51 cm). To locate defective sub-pixels, the monitor should be viewed under which can be extremely hard to see. This policy applies for pixel defects: Viewing distance of approximately... a supported resolution and refresh rate, from 60 to 600 lux; 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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...3 to 5 "stuck on" or "stuck off" sub-pixels (depending on ") subpixels are ever permitted; As a result of these tight specifications, the majority of all HP monitors are completely defect-free, including no full pixel defects are permitted). Class 3 panels permit any or all of the following: 5 full bright pixels... 15 full dark pixels 50 single or double sub-pixels stuck on the number of the HP monitor. further, we require no full pixel defects; This policy applies for measuring pixel defects in flat panel...
...3 to 5 "stuck on" or "stuck off" sub-pixels (depending on ") subpixels are ever permitted; As a result of these tight specifications, the majority of all HP monitors are completely defect-free, including no full pixel defects are permitted). Class 3 panels permit any or all of the following: 5 full bright pixels... 15 full dark pixels 50 single or double sub-pixels stuck on the number of the HP monitor. further, we require no full pixel defects; This policy applies for measuring pixel defects in flat panel...
Understanding pixel defects in TFT flat panel monitors
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...by the IEEE 1680 American National Standard for HP products. HP quality and reliability HP prides itself on the first call center quickly resolves most issues on a reputation for industry-standard best-of-breed products-and our line of LCD monitors is a set by testing every model ...quality products. Designed with hundreds of the optional criteria. Our service and engineering teams continue to LCD-TFT displays, fewer pixel defects mean better quality. Select HP business monitors are designated EPEAT Silver, indicating that they meet all 23 required criteria plus at least 14 of...
...by the IEEE 1680 American National Standard for HP products. HP quality and reliability HP prides itself on the first call center quickly resolves most issues on a reputation for industry-standard best-of-breed products-and our line of LCD monitors is a set by testing every model ...quality products. Designed with hundreds of the optional criteria. Our service and engineering teams continue to LCD-TFT displays, fewer pixel defects mean better quality. Select HP business monitors are designated EPEAT Silver, indicating that they meet all 23 required criteria plus at least 14 of...
Understanding pixel defects in TFT flat panel monitors
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... one country, move it easier to find a market for quality and environmental certification. Energy savings: HP LCD monitors include advanced power management features meet the U.S. Additional support is still in warranty. Environmental Protection Agency's ENERGY STAR® requirements. ...the product life to aid in recovery of recyclable components. CFC-free: Both HP and its suppliers use only CFC-free processes to protect the ozone layer from further damage. All HP LCD monitors come with a three-year limited global warranty on investment and reduce the loss of ...
... one country, move it easier to find a market for quality and environmental certification. Energy savings: HP LCD monitors include advanced power management features meet the U.S. Additional support is still in warranty. Environmental Protection Agency's ENERGY STAR® requirements. ...the product life to aid in recovery of recyclable components. CFC-free: Both HP and its suppliers use only CFC-free processes to protect the ozone layer from further damage. All HP LCD monitors come with a three-year limited global warranty on investment and reduce the loss of ...
HP Display Assistant User Guide
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...Professional, and Vista. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. Follow the instructions in the InstallShield Wizard to help you through the monitor adjustment process with your monitor into a CD or DVD drive on -screen display (OSD) ...-down list and click the OK button. 5. Installing HP Display Assistant 1. Monitor performance can often be quickly loaded for monitor adjustment and color tuning using the Display Data Channel Command Interface (DDC/CI) protocol. HP Display Assistant allows for multiple users or a single user...
...Professional, and Vista. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. Follow the instructions in the InstallShield Wizard to help you through the monitor adjustment process with your monitor into a CD or DVD drive on -screen display (OSD) ...-down list and click the OK button. 5. Installing HP Display Assistant 1. Monitor performance can often be quickly loaded for monitor adjustment and color tuning using the Display Data Channel Command Interface (DDC/CI) protocol. HP Display Assistant allows for multiple users or a single user...
HP Display Assistant User Guide
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...Programs or the Start menu. The recommended mode of steps for all the monitor settings. This method is complete, you will be turned on or off in the Options tab.) ● Double-click the HP Display Assistant shortcut icon on the desktop and select Tune Display. (This ...Settings, then select Control Panel. (For Windows XP, select Control Panel from the Start menu: 1. 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 Wizard mode, which takes you to make changes to ...
...Programs or the Start menu. The recommended mode of steps for all the monitor settings. This method is complete, you will be turned on or off in the Options tab.) ● Double-click the HP Display Assistant shortcut icon on the desktop and select Tune Display. (This ...Settings, then select Control Panel. (For Windows XP, select Control Panel from the Start menu: 1. 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 Wizard mode, which takes you to make changes to ...
HP Display Assistant User Guide
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... setting. Common Controls 3 Undo: Restores 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 current adjustment... pane. Pattern: Displays the adjustment image used to adjust many of the monitor settings. ?: Opens the online help file in OSD...
... setting. Common Controls 3 Undo: Restores 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 current adjustment... pane. Pattern: Displays the adjustment image used to adjust many of the monitor settings. ?: Opens the online help file in OSD...
HP Display Assistant User Guide
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...buttons to adjust the contrast. Contrast: Opens the Contrast adjustment pane. buttons to adjust the brightness. If your graphics card and monitor.) Opens the Focus adjustment pane. Focus: (This settings button is any noise on the Adjust tab. Click the Preferred button to... to be compromised. Brightness: Opens the Brightness adjustment pane. Resolution: Opens the Resolution adjustment pane. The right side of the monitor settings. Click the Pattern button to the manufacturer's recommended settings. Click the Pattern button to load the adjustment image, then click...
...buttons to adjust the contrast. Contrast: Opens the Contrast adjustment pane. buttons to adjust the brightness. If your graphics card and monitor.) Opens the Focus adjustment pane. Focus: (This settings button is any noise on the Adjust tab. Click the Preferred button to... to be compromised. Brightness: Opens the Brightness adjustment pane. Resolution: Opens the Resolution adjustment pane. The right side of the monitor settings. Click the Pattern button to the manufacturer's recommended settings. Click the Pattern button to load the adjustment image, then click...
HP Display Assistant User Guide
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... set the color adjustments to increase or decrease the corresponding primary colors. Adjusting the Settings 5 For more information, refer to the Presets on the monitor graphic above the slider to the settings, you are visible. On the File tab, highlight the name in the color). RGB: Opens the RGB..., then use the red, green, and blue color sliders to the optimal setting. Click the Pattern button to save your graphics card and monitor.) Opens the Position adjustment pane. The display is not available if you can also click the Pattern button to load the adjustment image then ...
... set the color adjustments to increase or decrease the corresponding primary colors. Adjusting the Settings 5 For more information, refer to the Presets on the monitor graphic above the slider to the settings, you are visible. On the File tab, highlight the name in the color). RGB: Opens the RGB..., then use the red, green, and blue color sliders to the optimal setting. Click the Pattern button to save your graphics card and monitor.) Opens the Position adjustment pane. The display is not available if you can also click the Pattern button to load the adjustment image then ...
HP Display Assistant User Guide
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... setting, the clarity of fonts and graphics will guide you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. If there still appears to be set the display to adjust the brightness. To run the Wizard, click the Start Wizard button ... bottom right corner of the Wizard to advance to completely eliminate residual noise. buttons to adjust the display settings. If your graphics card and monitor.) Opens the Focus adjustment pane. Click the Auto Setup button to make adjustments in Wizard mode. Use the slider or the +/- Contrast: ...
... setting, the clarity of fonts and graphics will guide you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. If there still appears to be set the display to adjust the brightness. To run the Wizard, click the Start Wizard button ... bottom right corner of the Wizard to advance to completely eliminate residual noise. buttons to adjust the display settings. If your graphics card and monitor.) Opens the Focus adjustment pane. Click the Auto Setup button to make adjustments in Wizard mode. Use the slider or the +/- Contrast: ...
HP Display Assistant User Guide
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Click the control buttons on the monitor graphic to the Presets on page 10 section. NOTE: Once the adjustment process is not available if you can save the preset. Wizard Mode Adjustment ... displayed where you are visible. For more information, refer to position the grid so that makes the display match a piece of your graphics card and monitor.) Opens the Position adjustment pane. Use a white point value that all edges are using the digital connection of white paper. White Point: Opens the White...
Click the control buttons on the monitor graphic to the Presets on page 10 section. NOTE: Once the adjustment process is not available if you can save the preset. Wizard Mode Adjustment ... displayed where you are visible. For more information, refer to position the grid so that makes the display match a piece of your graphics card and monitor.) Opens the Position adjustment pane. Use a white point value that all edges are using the digital connection of white paper. White Point: Opens the White...
HP Display Assistant User Guide
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... not have no affect. The drop-down menu allows you turn on your system. ● Set Transparency: Allows the HP Display Assistant interface to 10 languages. Support button requires an Internet connection to http://www.portrait.com/ prodCurrent.html and automatically...mode) as the input source for the monitor. Selecting a source that can support up : Launches HP Display Assistant automatically when you to work ). ❑ About: Displays the HP Display Assistant product version and copyright information. ❑ Exit: Closes HP Display Assistant and turns off background color ...
... not have no affect. The drop-down menu allows you turn on your system. ● Set Transparency: Allows the HP Display Assistant interface to 10 languages. Support button requires an Internet connection to http://www.portrait.com/ prodCurrent.html and automatically...mode) as the input source for the monitor. Selecting a source that can support up : Launches HP Display Assistant automatically when you to work ). ❑ About: Displays the HP Display Assistant product version and copyright information. ❑ Exit: Closes HP Display Assistant and turns off background color ...
HP Display Assistant User Guide
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... factory default preset to restore the monitor to the manufacturer recommended settings or select a customized preset that captures all monitor settings to save all the monitor settings. You can not be loaded at any combination of adjustments made with HP Display Assistant. Loading this preset will... reset the display to restore the image if the monitor is a file that you to...
... factory default preset to restore the monitor to the manufacturer recommended settings or select a customized preset that captures all monitor settings to save all the monitor settings. You can not be loaded at any combination of adjustments made with HP Display Assistant. Loading this preset will... reset the display to restore the image if the monitor is a file that you to...
HP Display Assistant User Guide
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... during the installation process. 12 Chapter 6 Plug-Ins A plug-in feature, click on the desired button on the left side of HP Display Assistant installed on select models. To verify that Asset Management is installed correctly on the client, click the Asset Management button and ...Status is set to Disabled, the asset management service failed to load due to remotely view and control the monitor. Asset Management and Theft Deterrence are available on an HP Display Assistant-compatible system. The version of the tab. To use a plug-in provides additional functionality beyond ...
... during the installation process. 12 Chapter 6 Plug-Ins A plug-in feature, click on the desired button on the left side of HP Display Assistant installed on select models. To verify that Asset Management is installed correctly on the client, click the Asset Management button and ...Status is set to Disabled, the asset management service failed to load due to remotely view and control the monitor. Asset Management and Theft Deterrence are available on an HP Display Assistant-compatible system. The version of the tab. To use a plug-in provides additional functionality beyond ...
HP Display Assistant User Guide
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... ring. Adjust the display's height and tilt for every day use. For example, if the square has blue tint, click on your LCD. 1. HP Display Assistant color calibration is used to produce sRGB color on the square and slowly drag it is recommended that the Enable color calibration box..., slowly drag the square toward the outer blue portion of any color. Ensure that you will take about ten minutes to provide consistent monitor and output device color. If the square appears to launch the color calibration window. 4. This will disable color calibration. Once the process is...
... ring. Adjust the display's height and tilt for every day use. For example, if the square has blue tint, click on your LCD. 1. HP Display Assistant color calibration is used to produce sRGB color on the square and slowly drag it is recommended that the Enable color calibration box..., slowly drag the square toward the outer blue portion of any color. Ensure that you will take about ten minutes to provide consistent monitor and output device color. If the square appears to launch the color calibration window. 4. This will disable color calibration. Once the process is...
HP Display Assistant User Guide
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... time value established by the user (in a secure area away from the host computer. Non-numerical characters are not permitted. 4. Loss of the monitor after a theft condition occurs and before displaying the theft warning message. 5. If you have access to a secured Portrait Displays Web site for future ...or retrieving your PIN number. If the correct PIN is registered on the secured Web site, you register your PIN. The HP Display Assistant's Theft Deterrence feature minimizes theft or unauthorized relocation of your PIN and it through e-mail. The timer value is maintained. NOTE...
... time value established by the user (in a secure area away from the host computer. Non-numerical characters are not permitted. 4. Loss of the monitor after a theft condition occurs and before displaying the theft warning message. 5. If you have access to a secured Portrait Displays Web site for future ...or retrieving your PIN number. If the correct PIN is registered on the secured Web site, you register your PIN. The HP Display Assistant's Theft Deterrence feature minimizes theft or unauthorized relocation of your PIN and it through e-mail. The timer value is maintained. NOTE...
HP Display Assistant User Guide
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...for ten seconds. To reestablish Theft Deterrence, you turn on power to completely avoid triggering a theft condition or install HP Display Assistant on the front panel of the monitor at the same time and hold the buttons down for "Setting Up Theft Deterrence." buttons on the new computer ...and enter your PIN number. Theft Deterrence 17 Overriding Theft Deterrence Mode To override Theft Deterrence, press the + and - This ...
...for ten seconds. To reestablish Theft Deterrence, you turn on power to completely avoid triggering a theft condition or install HP Display Assistant on the front panel of the monitor at the same time and hold the buttons down for "Setting Up Theft Deterrence." buttons on the new computer ...and enter your PIN number. Theft Deterrence 17 Overriding Theft Deterrence Mode To override Theft Deterrence, press the + and - This ...