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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...can be clustered in manufacturing processes still may harbor tiny defects due to the extreme complexity of dealing with these inevitable minor flaws, HP has developed a set of policies and detection methods to help you the advantage of the manufacturing process. This means better quality for... the customer and ultimately greater satisfaction for some LCD monitors may produce a few sub-pixel defects per screen. To deal with a company that forms the sharp, vibrant images flat panel users...
...can be clustered in manufacturing processes still may harbor tiny defects due to the extreme complexity of dealing with these inevitable minor flaws, HP has developed a set of policies and detection methods to help you the advantage of the manufacturing process. This means better quality for... the customer and ultimately greater satisfaction for some LCD monitors may produce a few sub-pixel defects per screen. To deal with a company that forms the sharp, vibrant images flat panel users...
Understanding pixel defects in TFT flat panel monitors
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... panel from the backlight unit passes through a translucent plastic diffuser layer, which cross at 90 degrees (one side of all HP LCD monitors as well as an active-matrix LCD (AMLCD), used to control light, by transparent row and column electrodes, lines of its "off . The intersection of rows... on the "top" glass, and the other on and off " state. In the simplest LCD technology, the voltage applied across the LC material is removed from calculators to computer monitors. How LCDs work A liquid crystal is exactly what it helps to understand the technology behind this material is...
... panel from the backlight unit passes through a translucent plastic diffuser layer, which cross at 90 degrees (one side of all HP LCD monitors as well as an active-matrix LCD (AMLCD), used to control light, by transparent row and column electrodes, lines of its "off . The intersection of rows... on the "top" glass, and the other on and off " state. In the simplest LCD technology, the voltage applied across the LC material is removed from calculators to computer monitors. How LCDs work A liquid crystal is exactly what it helps to understand the technology behind this material is...
Understanding pixel defects in TFT flat panel monitors
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... vary from a distance of sub-pixel defects are inevitable, all three sub-pixels defective), HP customers are as follows: Table 1. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel...spot a sub-pixel defect Due to their products. To locate defective sub-pixels, the monitor should be easier to spot than defective red or blue ones. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality...
... vary from a distance of sub-pixel defects are inevitable, all three sub-pixels defective), HP customers are as follows: Table 1. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel...spot a sub-pixel defect Due to their products. To locate defective sub-pixels, the monitor should be easier to spot than defective red or blue ones. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality...
Understanding pixel defects in TFT flat panel monitors
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...bright or dark sub-pixels 3 to 5 "stuck on" or "stuck off The HP specification ensures that fall within the ISO 9241 set of specifications for HP monitors manufactured in most cases, HP displays will meet the more than 5 bright ("stuck on") subpixels are permitted). Class... sub-pixel defect. International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of all of the HP monitor. further, we require no full pixel defects; As a result of these tight specifications, the majority of standards.. Table 2. This policy...
...bright or dark sub-pixels 3 to 5 "stuck on" or "stuck off The HP specification ensures that fall within the ISO 9241 set of specifications for HP monitors manufactured in most cases, HP displays will meet the more than 5 bright ("stuck on") subpixels are permitted). Class... sub-pixel defect. International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of all of the HP monitor. further, we require no full pixel defects; As a result of these tight specifications, the majority of standards.. Table 2. This policy...
Understanding pixel defects in TFT flat panel monitors
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... 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 TCO 9 Here's how HP builds quality into every aspect of product design, including the following features: EPEAT™: The Electronic...Computer Products that identifies 23 required and 28 optional criteria. HP quality and reliability helps reduce maintenance, repair, and support costs throughout the monitor lifecycle and result in a variety of networked environments to LCD-TFT displays, fewer pixel defects mean better quality. Our service...
... 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 TCO 9 Here's how HP builds quality into every aspect of product design, including the following features: EPEAT™: The Electronic...Computer Products that identifies 23 required and 28 optional criteria. HP quality and reliability helps reduce maintenance, repair, and support costs throughout the monitor lifecycle and result in a variety of networked environments to LCD-TFT displays, fewer pixel defects mean better quality. Our service...
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. For more details visit www.hp.com/hps/support. 10 HP service and support HP LCD monitors are also available. Environmental Protection Agency's ENERGY STAR® requirements. Recyclability: Commonly recycled materials are...
... 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. For more details visit www.hp.com/hps/support. 10 HP service and support HP LCD monitors are also available. Environmental Protection Agency's ENERGY STAR® requirements. Recyclability: Commonly recycled materials are...
HP Display Assistant User Guide
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... Windows NT, XP Home, XP Professional, and Vista. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. HP Display Assistant is HP Display Assistant? 1 Click Install HP Display Assistant Utility. 4. Select a language from the drop-down list and click the OK button. 5.... 1 Overview What is no feedback to help you correctly adjust the monitor settings. Furthermore, there is HP Display Assistant? You can save the configurations that you to quickly and accurately adjust the display settings and save multiple...
... Windows NT, XP Home, XP Professional, and Vista. The CD will automatically run and display the HP Monitors Software and Documentation window. 2. HP Display Assistant is HP Display Assistant? 1 Click Install HP Display Assistant Utility. 4. Select a language from the drop-down list and click the OK button. 5.... 1 Overview What is no feedback to help you correctly adjust the monitor settings. Furthermore, there is HP Display Assistant? You can save the configurations that you to quickly and accurately adjust the display settings and save multiple...
HP Display Assistant User Guide
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... to accurately calibrate all settings. This method is Wizard mode, which takes you to make changes to any monitor setting. 2 Chapter 1 Overview Click the Yes button to begin uninstalling HP Display Assistant. 6. Click the Yes button to complete the uninstall. Click the Yes button to confirm a successful...Assistant. 3. OSD mode allows you through a step-by-step process to go through any of steps for all the monitor settings. Wizard and OSD Modes HP Display Assistant has two modes of operation is less accurate than Wizard mode, but allows you will be prompted to uninstall...
... to accurately calibrate all settings. This method is Wizard mode, which takes you to make changes to any monitor setting. 2 Chapter 1 Overview Click the Yes button to begin uninstalling HP Display Assistant. 6. Click the Yes button to complete the uninstall. Click the Yes button to confirm a successful...Assistant. 3. OSD mode allows you through a step-by-step process to go through any of steps for all the monitor settings. Wizard and OSD Modes HP Display Assistant has two modes of operation is less accurate than Wizard mode, but allows you will be prompted to uninstall...
HP Display Assistant User Guide
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... Closes HP Display Assistant. +/-: Increases or decreases the monitor value by one unit for the active adjustment pane to its factory setting. Common Controls 3 To close the adjustment image, click the Pattern button again. Undo: Restores the monitor value for the current adjustment pane. Reset: Restores the monitor value...default browser window. Pattern: Displays the adjustment image used to its previous setting. Slider: Increases or decreases the monitor value for the active adjustment pane to adjust many of the monitor settings. ?: Opens the online help file in OSD mode.
... Closes HP Display Assistant. +/-: Increases or decreases the monitor value by one unit for the active adjustment pane to its factory setting. Common Controls 3 To close the adjustment image, click the Pattern button again. Undo: Restores the monitor value for the current adjustment pane. Reset: Restores the monitor value...default browser window. Pattern: Displays the adjustment image used to its previous setting. Slider: Increases or decreases the monitor value for the active adjustment pane to adjust many of the monitor settings. ?: Opens the online help file in OSD mode.
HP Display Assistant User Guide
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... Setup button to load the adjustment image then use the Pitch slider to the manufacturer's recommended settings. The center section of the monitor settings. If your graphics card and monitor.) Opens the Focus adjustment pane. Adjusting the Settings Click on a settings button on the screen. Contrast: Opens the Contrast adjustment pane. buttons...
... Setup button to load the adjustment image then use the Pitch slider to the manufacturer's recommended settings. The center section of the monitor settings. If your graphics card and monitor.) Opens the Focus adjustment pane. Adjusting the Settings Click on a settings button on the screen. Contrast: Opens the Contrast adjustment pane. buttons...
HP Display Assistant User Guide
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...the File tab, highlight the name in the color). Click the Pattern button to load the adjustment image then click the control buttons on the monitor graphic above the slider to the Presets on page 10 section. You can save the preset. Adjusting the Settings 5 The display is not available... Click the Pattern button to load the adjustment image, then use the red, green, and blue color sliders to save your graphics card and monitor.) Opens the Position adjustment pane. For more information, refer to find the white point value that all edges are using the digital connection of ...
...the File tab, highlight the name in the color). Click the Pattern button to load the adjustment image then click the control buttons on the monitor graphic above the slider to the Presets on page 10 section. You can save the preset. Adjusting the Settings 5 The display is not available... Click the Pattern button to load the adjustment image, then use the red, green, and blue color sliders to save your graphics card and monitor.) Opens the Position adjustment pane. For more information, refer to find the white point value that all edges are using the digital connection of ...
HP Display Assistant User Guide
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...is not available if you are using the digital connection of the Wizard to advance to the preferred resolution. If your graphics card and monitor.) Opens the Focus adjustment pane. Focus: (This adjustment is in Wizard mode. buttons to adjust the brightness. If there still appears ...the +/- 3 Wizard Mode Wizard Tab Wizard mode guides you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. Click the Preferred button to set to the next window in the following sequence. Click the right arrow button on the screen. ...
...is not available if you are using the digital connection of the Wizard to advance to the preferred resolution. If your graphics card and monitor.) Opens the Focus adjustment pane. Focus: (This adjustment is in Wizard mode. buttons to adjust the brightness. If there still appears ...the +/- 3 Wizard Mode Wizard Tab Wizard mode guides you through a predefined step-by-step process with instructions and patterns for adjusting each monitor setting. Click the Preferred button to set to the next window in the following sequence. Click the right arrow button on the screen. ...
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. Wizard Mode Adjustment Sequence 7 Position: (This adjustment is complete, The File tab will be displayed where you are visible. ... using the digital connection of white paper. Click the control buttons on page 10 section. For more information, refer to the Presets on the monitor graphic to save the settings as a preset. NOTE: Once the adjustment process is not available if you can save the preset.
... 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. Wizard Mode Adjustment Sequence 7 Position: (This adjustment is complete, The File tab will be displayed where you are visible. ... using the digital connection of white paper. Click the control buttons on page 10 section. For more information, refer to the Presets on the monitor graphic to save the settings as a preset. NOTE: Once the adjustment process is not available if you can save the preset.
HP Display Assistant User Guide
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.... The Tech. Some displays do not have no affect. Version: Opens the Version pane, which provides manufacturing data for the monitor. Transparency set to 0% is minimally visible. ● Select Language: HP Display Assistant can be semi-opaque. Support button requires an Internet connection to work . The Check Update button requires an Internet...
.... The Tech. Some displays do not have no affect. Version: Opens the Version pane, which provides manufacturing data for the monitor. Transparency set to 0% is minimally visible. ● Select Language: HP Display Assistant can be semi-opaque. Support button requires an Internet connection to work . The Check Update button requires an Internet...
HP Display Assistant User Guide
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... multiple presets that captures all monitor settings to restore the image if the monitor is already configured. Customized presets can be saved for managing presets. 5 Presets File Tab Selecting the File tab opens the File pane for any time from the desktop or set to the customized presets, HP Display Assistant has a Factory...
... multiple presets that captures all monitor settings to restore the image if the monitor is already configured. Customized presets can be saved for managing presets. 5 Presets File Tab Selecting the File tab opens the File pane for any time from the desktop or set to the customized presets, HP Display Assistant has a Factory...
HP Display Assistant User Guide
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... a plug-in provides additional functionality beyond the standard OSD replacement functions associated with HP Display Assistant. This feature is available on the left side of HP Display Assistant installed on select models. NOTE: If Asset Management Status is set ...12 Chapter 6 Plug-Ins The version of the tab. To verify that Asset Management is available on an HP Display Assistant-compatible system. Asset Management and Theft Deterrence are available on your system may have all plug-ins,... the IT Manager the necessary components to remotely view and control the monitor.
... a plug-in provides additional functionality beyond the standard OSD replacement functions associated with HP Display Assistant. This feature is available on the left side of HP Display Assistant installed on select models. NOTE: If Asset Management Status is set ...12 Chapter 6 Plug-Ins The version of the tab. To verify that Asset Management is available on an HP Display Assistant-compatible system. Asset Management and Theft Deterrence are available on your system may have all plug-ins,... the IT Manager the necessary components to remotely view and control the monitor.
HP Display Assistant User Guide
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... minutes to complete. It should appear neutral of targets used to display images from the square. Color Calibration 13 Using HP Display Assistant Color Calibration The color calibration will experience more accurate color. Comfortably position yourself at the middle square in "...LCD. 1. For example, if the square has blue tint, click on your viewing angle during the calibration process. 5. To enable color calibration, click the Color Calibration button in the File tab will remove blue tint from Web sites and specifies a color matching technique to provide consistent monitor...
... minutes to complete. It should appear neutral of targets used to display images from the square. Color Calibration 13 Using HP Display Assistant Color Calibration The color calibration will experience more accurate color. Comfortably position yourself at the middle square in "...LCD. 1. For example, if the square has blue tint, click on your viewing angle during the calibration process. 5. To enable color calibration, click the Color Calibration button in the File tab will remove blue tint from Web sites and specifies a color matching technique to provide consistent monitor...
HP Display Assistant User Guide
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...information in a secure area away from the host computer. Loss of the monitor after a theft condition occurs and before displaying the theft warning message. 5. Once both actions occur, the monitor detects theft and begins a countdown based upon the time value established by the...You must be used with a single-monitor and computer configuration. Theft Deterrence NOTE: The Theft Deterrence feature is available on the screen. 16 Chapter 6 Plug-Ins NOTE: HP strongly recommends that you have access to the Internet. The HP Display Assistant's Theft Deterrence feature minimizes ...
...information in a secure area away from the host computer. Loss of the monitor after a theft condition occurs and before displaying the theft warning message. 5. Once both actions occur, the monitor detects theft and begins a countdown based upon the time value established by the...You must be used with a single-monitor and computer configuration. Theft Deterrence NOTE: The Theft Deterrence feature is available on the screen. 16 Chapter 6 Plug-Ins NOTE: HP strongly recommends that you have access to the Internet. The HP Display Assistant's Theft Deterrence feature minimizes ...
HP Display Assistant User Guide
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... time 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. This effectively cancels your PIN when prompted the first... time you turn on power to completely avoid triggering a theft condition or install HP Display Assistant on the new computer and enter your PIN number. Overriding Theft Deterrence Mode To override Theft Deterrence, press the + and -...
... time 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. This effectively cancels your PIN when prompted the first... time you turn on power to completely avoid triggering a theft condition or install HP Display Assistant on the new computer and enter your PIN number. Overriding Theft Deterrence Mode To override Theft Deterrence, press the + and -...