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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...its customers. HP has conducted a detailed study of quality to its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for the end user because the user is this important to me? It does, however, allow for some LCD monitors may produce ...a few sub-pixel defects per screen. In this white paper explains: What are viewed under special conditions, or unless they work? Executive summary Flat panel LCD technology is HP doing about them, this case, no ...
...its customers. HP has conducted a detailed study of quality to its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for the end user because the user is this important to me? It does, however, allow for some LCD monitors may produce ...a few sub-pixel defects per screen. In this white paper explains: What are viewed under special conditions, or unless they work? Executive summary Flat panel LCD technology is HP doing about them, this case, no ...
Understanding pixel defects in TFT flat panel monitors
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... 60 to encounter this situation. In a simplified format, the pixel defect specifications are not likely to 600 lux; To locate defective sub-pixels, the monitor should be viewed under which can reasonably be easier to see. Historically, HP has maintained stringent manufacturing specifications for pixel defects, and it necessary to tolerate a minimal number of...
... 60 to encounter this situation. In a simplified format, the pixel defect specifications are not likely to 600 lux; To locate defective sub-pixels, the monitor should be viewed under which can reasonably be easier to see. Historically, HP has maintained stringent manufacturing specifications for pixel defects, and it necessary to tolerate a minimal number of...
Understanding pixel defects in TFT flat panel monitors
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... each ; These identify three classes for pixel defects, contained within the above listed range of the HP monitor. As mentioned earlier, the HP specifications dictate no double sub-pixel 6 further, we require no full pixel defects; in flat panel monitors: Class 0 panels are shipping with only a single sub-pixel defect. International standards (ISO-9241...
... each ; These identify three classes for pixel defects, contained within the above listed range of the HP monitor. As mentioned earlier, the HP specifications dictate no double sub-pixel 6 further, we require no full pixel defects; in flat panel monitors: Class 0 panels are shipping with only a single sub-pixel defect. International standards (ISO-9241...
Understanding pixel defects in TFT flat panel monitors
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.... The award-winning HP call . HP systematically pushes its lifecycle. The HP advantage The HP pixel defect specifications are part of HP's ongoing effort to that reputation. 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...
.... The award-winning HP call . HP systematically pushes its lifecycle. The HP advantage The HP pixel defect specifications are part of HP's ongoing effort to that reputation. 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...
HP LP2275w and LP2475w LCD Monitors User Guide
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iii NOTE: Text set off in this manner indicates that failure to equipment or loss of life. About This Guide This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. Text set off in this manner indicates that failure to follow directions could result in damage to follow directions could result in this manner provides important supplemental information. CAUTION: Text set off in bodily harm or loss of information. WARNING!
iii NOTE: Text set off in this manner indicates that failure to equipment or loss of life. About This Guide This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. Text set off in this manner indicates that failure to follow directions could result in damage to follow directions could result in this manner provides important supplemental information. CAUTION: Text set off in bodily harm or loss of information. WARNING!
HP LP2275w and LP2475w LCD Monitors User Guide
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... Troubleshooting Solving Common Problems ...35 Using the Worldwide Web ...37 Preparing to Call Technical Support 37 Appendix B Technical Specifications HP LP2275w Model ...38 HP LP2475w Model ...39 Recognizing Preset Display Resolutions 41 HP LP2275w Model ...41 HP LP2475w Model ...41 Entering User Modes ...42 Energy Saver Feature ...43 Appendix C Agency Regulatory Notices Federal Communications Commission... ...47 Disposal of Waste Equipment by Users in Private Household in the European Union ...47 Restriction of Hazardous Substances (RoHS 48 Appendix D LCD Monitor Quality and Pixel Policy vi
... Troubleshooting Solving Common Problems ...35 Using the Worldwide Web ...37 Preparing to Call Technical Support 37 Appendix B Technical Specifications HP LP2275w Model ...38 HP LP2475w Model ...39 Recognizing Preset Display Resolutions 41 HP LP2275w Model ...41 HP LP2475w Model ...41 Entering User Modes ...42 Energy Saver Feature ...43 Appendix C Agency Regulatory Notices Federal Communications Commission... ...47 Disposal of Waste Equipment by Users in Private Household in the European Union ...47 Restriction of Hazardous Substances (RoHS 48 Appendix D LCD Monitor Quality and Pixel Policy vi
HP LP2275w and LP2475w LCD Monitors User Guide
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...; Large 60.96 cm (24-inch) diagonal viewable area display with the following regulated specifications: ◦ European Union CE Directives ◦ Swedish MPR II 1990 HP LP2475w Model The LCD (liquid crystal display) monitor has an active matrix, thin-film transistor (TFT). screen support for lower resolutions ●... time ● Pivot capability to rotate display to block side screen viewing ● Security slot provision on monitor to accept optional mounted devices, such as an HP speaker bar ● Plug and play capability if supported by the system ● Privacy filter slots to ...
...; Large 60.96 cm (24-inch) diagonal viewable area display with the following regulated specifications: ◦ European Union CE Directives ◦ Swedish MPR II 1990 HP LP2475w Model The LCD (liquid crystal display) monitor has an active matrix, thin-film transistor (TFT). screen support for lower resolutions ●... time ● Pivot capability to rotate display to block side screen viewing ● Security slot provision on monitor to accept optional mounted devices, such as an HP speaker bar ● Plug and play capability if supported by the system ● Privacy filter slots to ...
HP LP2275w and LP2475w LCD Monitors User Guide
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● Software and documentation CD that includes HP Display Assistant, Pivot Pro software, monitor driver software, and product documentation ● Energy saver feature to meet requirements for reduced power consumption ● AssetControl ● Compliant with the following regulated specifications: ◦ European Union CE Directives ◦ Swedish MPR II 1990 ◦ Swedish TCO Requirements ◦ Energy Star HP LP2475w Model 3
● Software and documentation CD that includes HP Display Assistant, Pivot Pro software, monitor driver software, and product documentation ● Energy saver feature to meet requirements for reduced power consumption ● AssetControl ● Compliant with the following regulated specifications: ◦ European Union CE Directives ◦ Swedish MPR II 1990 ◦ Swedish TCO Requirements ◦ Energy Star HP LP2475w Model 3
HP LP2275w and LP2475w LCD Monitors User Guide
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...some form of electric shock or damage to properly support your safety, do not place anything on power cords or cables. For your HP LCD monitor. CAUTION: For the protection of serious injury, read the Safety and Comfort Guide. the power strips must be taken to route ...disable the power cord grounding feature. Care should be specifically labeled as a power strip or Uninterruptible Power Supply (UPS). This guide is located on page 46 in a grounded (earthed) outlet that no one is used, use with the monitor. LCD monitors that they can replace the equipment, if surge ...
...some form of electric shock or damage to properly support your safety, do not place anything on power cords or cables. For your HP LCD monitor. CAUTION: For the protection of serious injury, read the Safety and Comfort Guide. the power strips must be taken to route ...disable the power cord grounding feature. Care should be specifically labeled as a power strip or Uninterruptible Power Supply (UPS). This guide is located on page 46 in a grounded (earthed) outlet that no one is used, use with the monitor. LCD monitors that they can replace the equipment, if surge ...
HP LP2275w and LP2475w LCD Monitors User Guide
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...the HP monitors support Web site. The .ICM file contains a monitor color system profile. See Downloading from the Worldwide Web on this CD and can be downloaded from the menu. The Information File The .INF file defines monitor resources used in this chapter. Monitor ... 21 in conjunction with graphics programs to provide consistent color matching from monitor screen to ensure monitor compatibility with the International Color Consortium (ICC) Profile Format specification. 20 Chapter 4 Operating the Monitor This file is written in accordance with the computer's graphics adapter. ...
...the HP monitors support Web site. The .ICM file contains a monitor color system profile. See Downloading from the Worldwide Web on this CD and can be downloaded from the menu. The Information File The .INF file defines monitor resources used in this chapter. Monitor ... 21 in conjunction with graphics programs to provide consistent color matching from monitor screen to ensure monitor compatibility with the International Color Consortium (ICC) Profile Format specification. 20 Chapter 4 Operating the Monitor This file is written in accordance with the computer's graphics adapter. ...
HP LP2275w and LP2475w LCD Monitors User Guide
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... B-1 HP LP2275w Specifications Display Type Viewable Image Size Tilt Adjustment Swivel Adjustment Height Adjustment Pivot Maximum Weight (Unpacked) Dimensions (include base) Height (maximum) Depth Width Maximum Graphic Resolution Optimum Graphic Resolution Text Mode Dot Pitch Horizontal Frequency Vertical Refresh Rate Environmental Requirements Temperature Operating Temperature Storage Temperature 55.9 cm wide screen TFT LCD 55...
... B-1 HP LP2275w Specifications Display Type Viewable Image Size Tilt Adjustment Swivel Adjustment Height Adjustment Pivot Maximum Weight (Unpacked) Dimensions (include base) Height (maximum) Depth Width Maximum Graphic Resolution Optimum Graphic Resolution Text Mode Dot Pitch Horizontal Frequency Vertical Refresh Rate Environmental Requirements Temperature Operating Temperature Storage Temperature 55.9 cm wide screen TFT LCD 55...
HP LP2275w and LP2475w LCD Monitors User Guide
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Table B-1 HP LP2275w Specifications (continued) Relative Humidity Power Source Altitude: Operating Storage Power Consumption (maximum) Input Terminal 20 to 80% 90 - 265 VAC, 45/63 Hz 0 to 3657.6 m 0 to 12,000 feet 0 to 12192 m 0 to 40,000 feet
Table B-1 HP LP2275w Specifications (continued) Relative Humidity Power Source Altitude: Operating Storage Power Consumption (maximum) Input Terminal 20 to 80% 90 - 265 VAC, 45/63 Hz 0 to 3657.6 m 0 to 12,000 feet 0 to 12192 m 0 to 40,000 feet
HP LP2275w and LP2475w LCD Monitors User Guide
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Table B-2 HP LP2475w Specifications (continued) Relative Humidity Power Source Altitude: Operating Storage Power Consumption (maximum) Input Terminal 20 to 80% 90 - 265 VAC, 45/63 Hz 0 to 3657.6 m 0 to 12,000 feet 0 to 12192 m 0 to 40,000 feet
Table B-2 HP LP2475w Specifications (continued) Relative Humidity Power Source Altitude: Operating Storage Power Consumption (maximum) Input Terminal 20 to 80% 90 - 265 VAC, 45/63 Hz 0 to 3657.6 m 0 to 12,000 feet 0 to 12192 m 0 to 40,000 feet
HP LP2275w and LP2475w LCD Monitors User Guide
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... mode that can be entered and stored. 42 Appendix B Technical Specifications In addition to the factory preset modes, there are fifteen to ...using a standard graphics adapter. ● You are not using the on-screen display. Table B-4 HP LP2475w Factory Preset Modes (continued) Preset Pixel Format Horz Freq (kHz) 9 1024 × 768... x 1200 93.80 20 1680 x 1050 65.29 21 1920 x 1080 67.158 22 1920 x 1200 74.04 23 1920 x 1200 74.56 Vert Freq (Hz) 85...controller signal may need to any or all of the monitor screen by using a preset mode. Your changes can be made to readjust...
... mode that can be entered and stored. 42 Appendix B Technical Specifications In addition to the factory preset modes, there are fifteen to ...using a standard graphics adapter. ● You are not using the on-screen display. Table B-4 HP LP2475w Factory Preset Modes (continued) Preset Pixel Format Horz Freq (kHz) 9 1024 × 768... x 1200 93.80 20 1680 x 1050 65.29 21 1920 x 1080 67.158 22 1920 x 1200 74.04 23 1920 x 1200 74.56 Vert Freq (Hz) 85...controller signal may need to any or all of the monitor screen by using a preset mode. Your changes can be made to readjust...
HP LP2275w and LP2475w LCD Monitors User Guide
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...Specific details on any other products. For disposal or recycling information, contact the local authorities or the Electronic Industries Alliance (EIA) http://www.eiae.org. Instead, it is your responsibility to dispose of your waste equipment by Users in Private Household in the display LCD...STAR Logo meet the requirements of environmental considerations. Materials Disposal This HP product contains mercury in the fluorescent lamp in the European Union.... Product Environmental Notices Energy Star Compliance Monitors that this material can be found in a manner that might require ...
...Specific details on any other products. For disposal or recycling information, contact the local authorities or the Electronic Industries Alliance (EIA) http://www.eiae.org. Instead, it is your responsibility to dispose of your waste equipment by Users in Private Household in the display LCD...STAR Logo meet the requirements of environmental considerations. Materials Disposal This HP product contains mercury in the fluorescent lamp in the European Union.... Product Environmental Notices Energy Star Compliance Monitors that this material can be found in a manner that might require ...
HP LP2275w and LP2475w LCD Monitors User Guide
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Restriction of Hazardous Substances (RoHS) A Japanese regulatory requirement, defined by specification JIS C 0950, 2005, mandates that manufacturers provide Material Content Declarations for certain categories of electronic products offered for this product, visit http://www.hp.com/go/jisc0950. 11363-2006 11363-2006 48 Appendix C Agency Regulatory Notices To view the JIS C 0950 material declaration for sale after July 1, 2006.
Restriction of Hazardous Substances (RoHS) A Japanese regulatory requirement, defined by specification JIS C 0950, 2005, mandates that manufacturers provide Material Content Declarations for certain categories of electronic products offered for this product, visit http://www.hp.com/go/jisc0950. 11363-2006 11363-2006 48 Appendix C Agency Regulatory Notices To view the JIS C 0950 material declaration for sale after July 1, 2006.
HP LP2275w and LP2475w LCD Monitors User Guide
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... and is small and only visible on a specific background. Nevertheless, the display may have cosmetic imperfections that , over time, the industry will adjust guidelines as small bright or dark spots. D LCD Monitor Quality and Pixel Policy The TFT monitor uses high-precision technology, manufactured according to HP standards, to all vendors and is always off...
... and is small and only visible on a specific background. Nevertheless, the display may have cosmetic imperfections that , over time, the industry will adjust guidelines as small bright or dark spots. D LCD Monitor Quality and Pixel Policy The TFT monitor uses high-precision technology, manufactured according to HP standards, to all vendors and is always off...