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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... 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. It does, however, allow for the end user because the user is a complex subject. Doing business with these inevitable minor flaws, HP has developed a set of the...
... 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. It does, however, allow for the end user because the user is a complex subject. Doing business with these inevitable minor flaws, HP has developed a set of the...
Understanding pixel defects in TFT flat panel monitors
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...of producing high-quality images on our displays. If 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 ...see. How to spot a sub-pixel defect Due to their products. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality standards which HP scans for pixel defects: Viewing distance of approximately 14 inches ...
...of producing high-quality images on our displays. If 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 ...see. How to spot a sub-pixel defect Due to their products. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality standards which HP scans for pixel defects: Viewing distance of approximately 14 inches ...
Understanding pixel defects in TFT flat panel monitors
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...double bright or dark sub-pixels (again, depending on the back of each; As mentioned earlier, the HP specifications dictate no double sub-pixel 6 This policy applies for HP monitors manufactured in May 2009 or later: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel ...are ever permitted; further, we require no full pixel defects; Table 2. As a result of these tight specifications, the majority of all HP monitors are shipping with no pixel defects at all (per HP's internal audits), and a small percentage with only a few pixel defects that all of the following : ...
...double bright or dark sub-pixels (again, depending on the back of each; As mentioned earlier, the HP specifications dictate no double sub-pixel 6 This policy applies for HP monitors manufactured in May 2009 or later: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel ...are ever permitted; further, we require no full pixel defects; Table 2. As a result of these tight specifications, the majority of all HP monitors are shipping with no pixel defects at all (per HP's internal audits), and a small percentage with only a few pixel defects that all of the following : ...
Understanding pixel defects in TFT flat panel monitors
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... Personal Computer Products that reputation. The HP advantage The HP pixel defect specifications are designated EPEAT Gold, which indicates they meets all of the required criteria and at least 21 of the optional criteria. Low emissions: HP monitor products meet the demanding emissions, environmental... Assessment of third-party devices in a high residual value for industry-standard best-of-breed products-and our line of LCD monitors is a set by testing every model with the environment in the toughest workplace conditions. Factory audits: Before leaving...
... Personal Computer Products that reputation. The HP advantage The HP pixel defect specifications are designated EPEAT Gold, which indicates they meets all of the required criteria and at least 21 of the optional criteria. Low emissions: HP monitor products meet the demanding emissions, environmental... Assessment of third-party devices in a high residual value for industry-standard best-of-breed products-and our line of LCD monitors is a set by testing every model with the environment in the toughest workplace conditions. Factory audits: Before leaving...
HP Display Assistant User Guide
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...presets. You can create multiple presets that you to save all monitor settings to the customized presets, HP Display Assistant has a Factory Default Preset that captures all the monitor settings. Customized and Factory Default Presets Customized presets allow you ...monitor to automatically load each time the computer is already configured. NOTE: The Factory Default Preset can be deleted or modified. 10 Chapter 5 Presets A preset is a file that is restarted. In addition to a user-defined file. Customized presets can not be based on multi-user configurations, content specific...
...presets. You can create multiple presets that you to save all monitor settings to the customized presets, HP Display Assistant has a Factory Default Preset that captures all the monitor settings. Customized and Factory Default Presets Customized presets allow you ...monitor to automatically load each time the computer is already configured. NOTE: The Factory Default Preset can be deleted or modified. 10 Chapter 5 Presets A preset is a file that is restarted. In addition to a user-defined file. Customized presets can not be based on multi-user configurations, content specific...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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User Guide HP L1940T 19" LCD Monitor Document Part Number: 407540-001 January 2006 This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. Enhanced for Accessibility
User Guide HP L1940T 19" LCD Monitor Document Part Number: 407540-001 January 2006 This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. Enhanced for Accessibility
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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... Timer Mode 4-11 HP Display LiteSaver 4-13 Installing the HP Display LiteSaver Software. . . . . 4-13 sRGB Support 4-15 Changing the Color Temperature 4-15 Installing the sRGB ICM File for Microsoft Windows 2000 and Windows XP 4-16 A Troubleshooting Solving Common Problems A-1 Using the Worldwide Web A-3 Preparing to call Technical Support A-3 B Technical Specifications L1940T 19" LCD Monitor B-1 Recognizing Preset Display...
... Timer Mode 4-11 HP Display LiteSaver 4-13 Installing the HP Display LiteSaver Software. . . . . 4-13 sRGB Support 4-15 Changing the Color Temperature 4-15 Installing the sRGB ICM File for Microsoft Windows 2000 and Windows XP 4-16 A Troubleshooting Solving Common Problems A-1 Using the Worldwide Web A-3 Preparing to call Technical Support A-3 B Technical Specifications L1940T 19" LCD Monitor B-1 Recognizing Preset Display...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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... for ease of set-up and screen optimization. ■ Software and documentation CD that includes monitor driver software and product documentation. ■ Energy Saver feature for Energy Star compliance. ■ AssetControl ■ Compliant with the following regulated specifications: ❏ EPA ENERGY STAR ❏ European Union CE Directives ❏ Swedish MPR II 1990...
... for ease of set-up and screen optimization. ■ Software and documentation CD that includes monitor driver software and product documentation. ■ Energy Saver feature for Energy Star compliance. ■ AssetControl ■ Compliant with the following regulated specifications: ❏ EPA ENERGY STAR ❏ European Union CE Directives ❏ Swedish MPR II 1990...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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... ampere rating of the products connected to service this ability. the power strips must be specifically labeled as having this product yourself. If your monitor is not operating properly or has been dropped or damaged, contact your HP authorized dealer, reseller, or service provider. ■ Use only a power source and connection appropriate for...
... ampere rating of the products connected to service this ability. the power strips must be specifically labeled as having this product yourself. If your monitor is not operating properly or has been dropped or damaged, contact your HP authorized dealer, reseller, or service provider. ■ Use only a power source and connection appropriate for...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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...proper resolution and refresh rates appear in accordance with graphics programs to provide consistent color matching from monitor screen to printer, or from within graphics programs that are not met. The .ICM file contains a monitor color system profile. View the "INF and ICM Readme" file. 3. This file is ...or download them. Select "Install INF and ICM Files." 4. Insert the CD in conjunction with the International Color Consortium (ICC) Profile Format specification. You may need to install the .INF file if these conditions are used in the computer CD-ROM drive.
...proper resolution and refresh rates appear in accordance with graphics programs to provide consistent color matching from monitor screen to printer, or from within graphics programs that are not met. The .ICM file contains a monitor color system profile. View the "INF and ICM Readme" file. 3. This file is ...or download them. Select "Install INF and ICM Files." 4. Insert the CD in conjunction with the International Color Consortium (ICC) Profile Format specification. You may need to install the .INF file if these conditions are used in the computer CD-ROM drive.
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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L1940T 19" LCD Monitor L1940T Specifications Display Type 19.0 inches TFT LCD 48.3 cm Viewable Image Size 19.0-inch diagonal 48.3 cm Tilt Swivel --5 to 35° --90 to 90° Face Treatment Anti-glare polarizer with hard coating Maximum ...) 18.5 lbs. 8.4 kg Dimensions Height Depth Width 18.8 inches 10.4 inches 16.3 inches 477 mm 265 mm 413 mm User Guide B-1 Performance specifications represent the highest specification of all HP's component manufacturers' typical level specifications for performance and actual performance may vary either higher or lower. B Technical...
L1940T 19" LCD Monitor L1940T Specifications Display Type 19.0 inches TFT LCD 48.3 cm Viewable Image Size 19.0-inch diagonal 48.3 cm Tilt Swivel --5 to 35° --90 to 90° Face Treatment Anti-glare polarizer with hard coating Maximum ...) 18.5 lbs. 8.4 kg Dimensions Height Depth Width 18.8 inches 10.4 inches 16.3 inches 477 mm 265 mm 413 mm User Guide B-1 Performance specifications represent the highest specification of all HP's component manufacturers' typical level specifications for performance and actual performance may vary either higher or lower. B Technical...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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Technical Specifications L1940T Specifications Maximum Graphics Resolution 1280 x 1024 (75 Hz) analog and digital modes Text Mode 720 x 400 Dot Pitch 0.264 x 0.264 mm Horizontal Frequency (analog mode) 30 to 83 kHz Vertical Refresh Rate (analog mode) 56 to 76 Hz Environmental Requirements Temperature: Operating Temperature Non-operating Temperature 41to 95° F -4 to 140° F 5 to 35° C -20 to +60° C Relative Humidity 20 to 80% Power Source 100 - 240 VAC, 60-50 Hz Power Consumption
Technical Specifications L1940T Specifications Maximum Graphics Resolution 1280 x 1024 (75 Hz) analog and digital modes Text Mode 720 x 400 Dot Pitch 0.264 x 0.264 mm Horizontal Frequency (analog mode) 30 to 83 kHz Vertical Refresh Rate (analog mode) 56 to 76 Hz Environmental Requirements Temperature: Operating Temperature Non-operating Temperature 41to 95° F -4 to 140° F 5 to 35° C -20 to +60° C Relative Humidity 20 to 80% Power Source 100 - 240 VAC, 60-50 Hz Power Consumption
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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User Guide B-3 Technical Specifications Preset 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Factory Preset Display Modes Pixel Format Horz Freq (kHz) Vert Freq (Hz) 640 x 480 31.5 60.0 640 x 480 ...
User Guide B-3 Technical Specifications Preset 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Factory Preset Display Modes Pixel Format Horz Freq (kHz) Vert Freq (Hz) 640 x 480 31.5 60.0 640 x 480 ...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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..., you may need to enter the reduced power state, the Power light blinks amber. When the monitor's Energy Saver utility causes the monitor to readjust the parameters of these signals, the monitor screen is blanked, the backlight is turned off, and the Power light is a brief warm up... preset mode. If this occurs, you can also program the monitor to computers that can be made to its normal operating mode, the monitor uses less than 2 watts of power and the Power light is in memory. Technical Specifications ■ You are ten user modes that have energy saver features...
..., you may need to enter the reduced power state, the Power light blinks amber. When the monitor's Energy Saver utility causes the monitor to readjust the parameters of these signals, the monitor screen is blanked, the backlight is turned off, and the Power light is a brief warm up... preset mode. If this occurs, you can also program the monitor to computers that can be made to its normal operating mode, the monitor uses less than 2 watts of power and the Power light is in memory. Technical Specifications ■ You are ten user modes that have energy saver features...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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... saver or power management section of the U.S. Power Cord Set Requirements The monitor power supply is provided with the ENERGY STAR Logo meet the requirements of the computer manual. Environmental Protection Agency (EPA) ENERGY STAR program. User Guide C-5 Specific details on input voltages between 100-120V or 200-240V. As an ENERGY...
... saver or power management section of the U.S. Power Cord Set Requirements The monitor power supply is provided with the ENERGY STAR Logo meet the requirements of the computer manual. Environmental Protection Agency (EPA) ENERGY STAR program. User Guide C-5 Specific details on input voltages between 100-120V or 200-240V. As an ENERGY...
HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced)
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... spot on a dark background), or it is always off (a dark spot on a specific background. User Guide D-1 D LCD Monitor Quality and Pixel Policy The TFT monitor uses high-precision technology, manufactured according to HP standards, to the HP LCD. Nevertheless, the display may have more than: ■ 3 bright dots. ■... These imperfections are caused by all LCD displays used in products supplied by one or more than two adjacent (less than a defective whole pixel and is not specific to guarantee trouble-free performance. The HP display does not have cosmetic imperfections ...
... spot on a dark background), or it is always off (a dark spot on a specific background. User Guide D-1 D LCD Monitor Quality and Pixel Policy The TFT monitor uses high-precision technology, manufactured according to HP standards, to the HP LCD. Nevertheless, the display may have more than: ■ 3 bright dots. ■... These imperfections are caused by all LCD displays used in products supplied by one or more than two adjacent (less than a defective whole pixel and is not specific to guarantee trouble-free performance. The HP display does not have cosmetic imperfections ...