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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... This is because the current state-of policies and detection methods to help you the advantage of dealing with these inevitable minor flaws, HP has developed a set of -the-art in manufacturing processes still may harbor tiny defects due to consistently deliver a higher standard of pixel... paper explains: What are viewed under special conditions, or unless they work? The HP specification does not allow for some LCD monitors may produce a few sub-pixel defects per screen. HP has conducted a detailed study of color and detail that forms the sharp, vibrant images flat ...
... This is because the current state-of policies and detection methods to help you the advantage of dealing with these inevitable minor flaws, HP has developed a set of -the-art in manufacturing processes still may harbor tiny defects due to consistently deliver a higher standard of pixel... paper explains: What are viewed under special conditions, or unless they work? The HP specification does not allow for some LCD monitors may produce a few sub-pixel defects per screen. HP has conducted a detailed study of color and detail that forms the sharp, vibrant images flat ...
Understanding pixel defects in TFT flat panel monitors
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... was being applied to a given row and column switches the pixel at 90 degrees (one side of LCD. Unfortunately, when the drive voltage is exactly what it helps to computer monitors. Combining red, green, and blue light in a flat panel display) and an image is generated by.... If the panel is enclosed between two pieces of glass (in different amounts, controlled by transparent row and column electrodes, lines of all HP LCD monitors as well as "light valves"-letting light either pass through the panel or be achieved with such a simple, passive-matrix drive system. 3...
... was being applied to a given row and column switches the pixel at 90 degrees (one side of LCD. Unfortunately, when the drive voltage is exactly what it helps to computer monitors. Combining red, green, and blue light in a flat panel display) and an image is generated by.... If the panel is enclosed between two pieces of glass (in different amounts, controlled by transparent row and column electrodes, lines of all HP LCD monitors as well as "light valves"-letting light either pass through the panel or be achieved with such a simple, passive-matrix drive system. 3...
Understanding pixel defects in TFT flat panel monitors
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...defects: Viewing distance of approximately 14 inches (36 cm) Ambient illumination of 300 to 100 degrees vertical HP pixel-defect standards Since some degree of approximately 20 inches (51 cm). Sub-pixel defects are also easier to spot when ... has been tightening those specifications over time. To locate defective sub-pixels, the monitor should be viewed under which can be extremely hard to see. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total...
...defects: Viewing distance of approximately 14 inches (36 cm) Ambient illumination of 300 to 100 degrees vertical HP pixel-defect standards Since some degree of approximately 20 inches (51 cm). Sub-pixel defects are also easier to spot when ... has been tightening those specifications over time. To locate defective sub-pixels, the monitor should be viewed under which can be extremely hard to see. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total...
Understanding pixel defects in TFT flat panel monitors
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... shipping with only a single sub-pixel defect. further, we require no full pixel defects; This policy applies for HP monitors manufactured in May 2009 or later: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel defects: Full pixel defects: 2... dictate no double sub-pixel 6 International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of the HP monitor. in flat panel monitors: Class 0 panels are permitted). Class 3 panels permit any or all of the following : 1 full bright ("stuck on") ...
... shipping with only a single sub-pixel defect. further, we require no full pixel defects; This policy applies for HP monitors manufactured in May 2009 or later: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel defects: Full pixel defects: 2... dictate no double sub-pixel 6 International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of the HP monitor. in flat panel monitors: Class 0 panels are permitted). Class 3 panels permit any or all of the following : 1 full bright ("stuck on") ...
Understanding pixel defects in TFT flat panel monitors
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...the box. Engineering excellence: HP quality does not stop at the factory door. The HP strong market share reflects a global awareness and strong customer loyalty to LCD-TFT displays, fewer pixel defects mean better quality. Select HP business monitors are designated EPEAT Silver, indicating that ... 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 with the environment in mind HP environmental policies are designated EPEAT Gold, which indicates they will perform in a high residual value...
...the box. Engineering excellence: HP quality does not stop at the factory door. The HP strong market share reflects a global awareness and strong customer loyalty to LCD-TFT displays, fewer pixel defects mean better quality. Select HP business monitors are designated EPEAT Silver, indicating that ... 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 with the environment in mind HP environmental policies are designated EPEAT Gold, which indicates they will perform in a high residual value...
Understanding pixel defects in TFT flat panel monitors
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..., 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. HP Care Pack Services are easily disassembled at the local level. Development, the world's leading organization for discarded... day on parts and labor, including the backlight. For more details visit www.hp.com/hps/support. 10 HP service and support HP LCD monitors are protected under the industry-leading HP support umbrella, which includes 65,000 sales and service professionals in 160 countries around...
..., 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. HP Care Pack Services are easily disassembled at the local level. Development, the world's leading organization for discarded... day on parts and labor, including the backlight. For more details visit www.hp.com/hps/support. 10 HP service and support HP LCD monitors are protected under the industry-leading HP support umbrella, which includes 65,000 sales and service professionals in 160 countries around...
HP L2045w LCD Monitor User Guide
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Text set off in this manner indicates that failure to equipment or loss of life. WARNING! CAUTION: 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. About This Guide This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. iii NOTE: Text set off in bodily harm or loss of information.
Text set off in this manner indicates that failure to equipment or loss of life. WARNING! CAUTION: 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. About This Guide This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. iii NOTE: Text set off in bodily harm or loss of information.
HP L2045w LCD Monitor User Guide
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Table of contents 1 Product Features HP L2045w ...1 2 Safety and Maintenance Guidelines Important Safety Information ...3 Maintenance Guidelines ...3 Cleaning the Monitor ...4 Shipping the Monitor ...4 3 Setting Up the Monitor Rear Components ...5 Selecting the Signal Connectors and Cables 6 Connecting the Monitor ...7 Adjusting the Monitor ...10 Turning on the Monitor ...12 Connecting USB Devices ...13 Using the Accessory Rails ...13 Mounting Solutions ...14 Removing...
Table of contents 1 Product Features HP L2045w ...1 2 Safety and Maintenance Guidelines Important Safety Information ...3 Maintenance Guidelines ...3 Cleaning the Monitor ...4 Shipping the Monitor ...4 3 Setting Up the Monitor Rear Components ...5 Selecting the Signal Connectors and Cables 6 Connecting the Monitor ...7 Adjusting the Monitor ...10 Turning on the Monitor ...12 Connecting USB Devices ...13 Using the Accessory Rails ...13 Mounting Solutions ...14 Removing...
HP L2045w LCD Monitor User Guide
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OSD Menu Selections 22 Optimizing Digital Conversion 26 Using the HP Display Assistant Utility 26 Identifying Monitor Conditions ...27 Sleep Timer Mode ...27 HP Display LiteSaver ...28 Installing the HP Display LiteSaver Software 28 sRGB Support ...29 Changing the Color Temperature 29 ... Troubleshooting Solving Common Problems ...31 Using the Worldwide Web ...32 Preparing to Call Technical Support 32 Appendix B Technical Specifications L2045w Model ...33 Recognizing Preset Display Resolutions 34 Entering User Modes ...34 Energy Saver Feature ...35 Appendix C Agency Regulatory Notices ...
OSD Menu Selections 22 Optimizing Digital Conversion 26 Using the HP Display Assistant Utility 26 Identifying Monitor Conditions ...27 Sleep Timer Mode ...27 HP Display LiteSaver ...28 Installing the HP Display LiteSaver Software 28 sRGB Support ...29 Changing the Color Temperature 29 ... Troubleshooting Solving Common Problems ...31 Using the Worldwide Web ...32 Preparing to Call Technical Support 32 Appendix B Technical Specifications L2045w Model ...33 Recognizing Preset Display Resolutions 34 Entering User Modes ...34 Energy Saver Feature ...35 Appendix C Agency Regulatory Notices ...
HP L2045w LCD Monitor User Guide
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... as the optional HP Quick Release ● Removable pedestal base with VESA 40mm mounting holes for mounting an HP Thin Client with the optional HP Quick Release ●...) ports ● Accessory rail on monitor to accept optional mounted devices, such as an HP speaker bar ● Rubberized cable management on monitor back and pedestal base ● Plug... HP Display Assistant, Pivot Pro software, monitor driver software, and product documentation ● HP LiteSaver feature to meet requirements for reduced power consumption HP L2045w 1 1 Product Features HP L2045w The flat panel monitor has...
... as the optional HP Quick Release ● Removable pedestal base with VESA 40mm mounting holes for mounting an HP Thin Client with the optional HP Quick Release ●...) ports ● Accessory rail on monitor to accept optional mounted devices, such as an HP speaker bar ● Rubberized cable management on monitor back and pedestal base ● Plug... HP Display Assistant, Pivot Pro software, monitor driver software, and product documentation ● HP LiteSaver feature to meet requirements for reduced power consumption HP L2045w 1 1 Product Features HP L2045w The flat panel monitor has...
HP L2045w LCD Monitor User Guide
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...For your safety, do not place anything on a cord or cable. Not all power cords for this monitor. This guide is not operating properly or has been dropped or damaged, contact an authorized HP dealer, reseller, or service provider. ● Use only a power source and connection appropriate for the... • Do not disable the power cord grounding feature. It describes proper workstation, setup, posture, and health and work habits for this monitor, as the computer, connect all power strips provide surge protection; To reduce the risk of electric shock or damage to the outlet does not...
...For your safety, do not place anything on a cord or cable. Not all power cords for this monitor. This guide is not operating properly or has been dropped or damaged, contact an authorized HP dealer, reseller, or service provider. ● Use only a power source and connection appropriate for the... • Do not disable the power cord grounding feature. It describes proper workstation, setup, posture, and health and work habits for this monitor, as the computer, connect all power strips provide surge protection; To reduce the risk of electric shock or damage to the outlet does not...
HP L2045w LCD Monitor User Guide
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... soft area to rest on the power cord. Do not walk on the cord. ● Keep the monitor in the cabinet are provided for each device. ● Install the monitor near an outlet that you can substantially increase the life expectancy of the cord. These chemicals may need it ...from the wall outlet. 3. You can easily reach. Turn off the monitor and the computer. 2. Shipping the Monitor Keep the original packing box in use benzene, thinner, ammonia, or any kind into cabinet slots or other volatile substances to ...
... soft area to rest on the power cord. Do not walk on the cord. ● Keep the monitor in the cabinet are provided for each device. ● Install the monitor near an outlet that you can substantially increase the life expectancy of the cord. These chemicals may need it ...from the wall outlet. 3. You can easily reach. Turn off the monitor and the computer. 2. Shipping the Monitor Keep the original packing box in use benzene, thinner, ammonia, or any kind into cabinet slots or other volatile substances to ...
HP L2045w LCD Monitor User Guide
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... Components 5 Connects the VGA signal cable to a host USB port/hub. Connects the AC power cord to the monitor. Connects the DVI-D signal cable to the monitor. Provides slots for use with cable security locks. Rear Components Figure 3-1 Rear Components Component 1 2 3 4 5 6 USB Downstream Connectors USB ...Upstream Connector DVI-D Connector VGA Connector Cable Lock Provisions AC Power Connector Function Connects optional USB devices to the monitor, computer system, and other attached devices, then follow the instructions below. 3 Setting Up the...
... Components 5 Connects the VGA signal cable to a host USB port/hub. Connects the AC power cord to the monitor. Connects the DVI-D signal cable to the monitor. Provides slots for use with cable security locks. Rear Components Figure 3-1 Rear Components Component 1 2 3 4 5 6 USB Downstream Connectors USB ...Upstream Connector DVI-D Connector VGA Connector Cable Lock Provisions AC Power Connector Function Connects optional USB devices to the monitor, computer system, and other attached devices, then follow the instructions below. 3 Setting Up the...
HP L2045w LCD Monitor User Guide
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... and one VGA connector capable of VESA 100mm mounting holes. Connect the VGA signal cable to a VGA connector on the computer. 6 Chapter 3 Setting Up the Monitor The video mode is determined by the connector and video cable used in landscape mode. Use the top mounting holes to allow the display head... to be lowered 18.05 mm closer to the VGA connector on the monitor and the other end to a DVI- D connector on the computer. ● For analog operation, use an optional DVI-D signal cable. The...
... and one VGA connector capable of VESA 100mm mounting holes. Connect the VGA signal cable to a VGA connector on the computer. 6 Chapter 3 Setting Up the Monitor The video mode is determined by the connector and video cable used in landscape mode. Use the top mounting holes to allow the display head... to be lowered 18.05 mm closer to the VGA connector on the monitor and the other end to a DVI- D connector on the computer. ● For analog operation, use an optional DVI-D signal cable. The...
HP L2045w LCD Monitor User Guide
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Place the monitor in a convenient, well-ventilated location near the computer. Connecting the Monitor 7 The inputs can be selected through the On-Screen Display (OSD) feature by pressing the Input Select button on the front panel. Figure 3-3 Connecting the DVI-D Signal Cable (not included with monitor) Figure 3-4 Connecting the VGA Signal Cable Connecting the Monitor 1. The monitor will automatically determine which inputs have valid video signals.
Place the monitor in a convenient, well-ventilated location near the computer. Connecting the Monitor 7 The inputs can be selected through the On-Screen Display (OSD) feature by pressing the Input Select button on the front panel. Figure 3-3 Connecting the DVI-D Signal Cable (not included with monitor) Figure 3-4 Connecting the VGA Signal Cable Connecting the Monitor 1. The monitor will automatically determine which inputs have valid video signals.
HP L2045w LCD Monitor User Guide
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... not pull on power cords or cables. Figure 3-5 Connecting the USB Hub Cable (not included with monitor) WARNING! Arrange them so that is easily accessible at all times. • Disconnect power from the equipment by unplugging the power cord from the electrical ...outlet, grasp the cord by the plug. 8 Chapter 3 Setting Up the Monitor To reduce the risk of the computer or to a USB hub, and the other end to the equipment: • Do not disable the power cord...
... not pull on power cords or cables. Figure 3-5 Connecting the USB Hub Cable (not included with monitor) WARNING! Arrange them so that is easily accessible at all times. • Disconnect power from the equipment by unplugging the power cord from the electrical ...outlet, grasp the cord by the plug. 8 Chapter 3 Setting Up the Monitor To reduce the risk of the computer or to a USB hub, and the other end to the equipment: • Do not disable the power cord...
HP L2045w LCD Monitor User Guide
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3. Figure 3-7 Using the Cable Management Feature Connecting the Monitor 9 Figure 3-6 Connecting the Power Cable 4. Place the cables through the cable management channel on the back of the monitor, and the other end to the AC power connector on the back of the monitor and on the pedestal base. Connect one end of the power cable to an electrical wall outlet.
3. Figure 3-7 Using the Cable Management Feature Connecting the Monitor 9 Figure 3-6 Connecting the Power Cable 4. Place the cables through the cable management channel on the back of the monitor, and the other end to the AC power connector on the back of the monitor and on the pedestal base. Connect one end of the power cable to an electrical wall outlet.
HP L2045w LCD Monitor User Guide
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Adjusting the Monitor 1. Tilt the monitor's panel forward or backward to set it to the left or right for the best viewing angle. Swivel the monitor to a comfortable eye level. Figure 3-9 Swiveling the Monitor 10 Chapter 3 Setting Up the Monitor Figure 3-8 Tilting the Monitor 2.
Adjusting the Monitor 1. Tilt the monitor's panel forward or backward to set it to the left or right for the best viewing angle. Swivel the monitor to a comfortable eye level. Figure 3-9 Swiveling the Monitor 10 Chapter 3 Setting Up the Monitor Figure 3-8 Tilting the Monitor 2.
HP L2045w LCD Monitor User Guide
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... column prevents the display head from sliding up to your eye height for a comfortable viewing position. d. WARNING! CAUTION: To prevent damage to the monitor, be lowered 18.05 mm closer to lower it is lifted. c. Use the top mounting holes to allow the display head to be sure not... to the table surface, when used in landscape mode. Figure 3-10 Adjusting the Height NOTE: The monitor features two sets of the column. 3. Adjusting the Monitor 11 While pushing down the display head, press the lock-down/release button on the display head. Adjust the...
... column prevents the display head from sliding up to your eye height for a comfortable viewing position. d. WARNING! CAUTION: To prevent damage to the monitor, be lowered 18.05 mm closer to lower it is lifted. c. Use the top mounting holes to allow the display head to be sure not... to the table surface, when used in landscape mode. Figure 3-10 Adjusting the Height NOTE: The monitor features two sets of the column. 3. Adjusting the Monitor 11 While pushing down the display head, press the lock-down/release button on the display head. Adjust the...
