Understanding pixel defects in TFT flat panel monitors
Page 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 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
Page 2
..., however, allow for the end user because the user is a complex subject. Even so, some minimal sub-pixel defects. This is HP doing about them, this case, no full or complete pixel defects, and fewer sub-pixel defects than most competitors. Nevertheless, special practices and... 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. Introduction Liquid crystal display (LCD) technology was first invented decades ago and has been improving ever since-to expect. How...
..., however, allow for the end user because the user is a complex subject. Even so, some minimal sub-pixel defects. This is HP doing about them, this case, no full or complete pixel defects, and fewer sub-pixel defects than most competitors. Nevertheless, special practices and... 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. Introduction Liquid crystal display (LCD) technology was first invented decades ago and has been improving ever since-to expect. How...
Understanding pixel defects in TFT flat panel monitors
Page 3
... an ordered arrangement of the LC molecules electrically, causing them to a solid crystal. Fluorescent lights (very similar to computer monitors. Why TFTs? How LCDs work A liquid crystal is delivered by controlling the alignment of its "off . The intersection of rows and columns define...applying a voltage to control light, by the voltage applied across the display, very rapidly, the appearance of all HP LCD monitors as well as HP iPAQ devices and HP notebook displays. If the panel is produced. To understand how pixel defects occur, it sounds like shape and electrical...
... an ordered arrangement of the LC molecules electrically, causing them to a solid crystal. Fluorescent lights (very similar to computer monitors. Why TFTs? How LCDs work A liquid crystal is delivered by controlling the alignment of its "off . The intersection of rows and columns define...applying a voltage to control light, by the voltage applied across the display, very rapidly, the appearance of all HP LCD monitors as well as HP iPAQ devices and HP notebook displays. If the panel is produced. To understand how pixel defects occur, it sounds like shape and electrical...
Understanding pixel defects in TFT flat panel monitors
Page 4
...-only about 14 millionths of one of the millions of transistors within the LCD panel may leave a sub-pixel permanently on or off, creating a tiny dark spot or bright spot on the... display. with LCD technology, and permits the manufacture of largesize, high-resolution displays which rival any one percent (0.000014...Intel® Pentium® processor. This is more than double the number of transistors found in the LCD array. These can switch very quickly, and then hold the state of the sub-pixel while the ...
...-only about 14 millionths of one of the millions of transistors within the LCD panel may leave a sub-pixel permanently on or off, creating a tiny dark spot or bright spot on the... display. with LCD technology, and permits the manufacture of largesize, high-resolution displays which rival any one percent (0.000014...Intel® Pentium® processor. This is more than double the number of transistors found in the LCD array. These can switch very quickly, and then hold the state of the sub-pixel while the ...
Understanding pixel defects in TFT flat panel monitors
Page 9
... stop at the factory door. HP systematically pushes its lifecycle. Select HP business monitors are designated EPEAT Silver, indicating 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 by testing every...
... stop at the factory door. HP systematically pushes its lifecycle. Select HP business monitors are designated EPEAT Silver, indicating 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 by testing every...
Understanding pixel defects in TFT flat panel monitors
Page 10
..., making it to another country, and receive warranty service if the unit is available 24 hours a day on the Web at the local level. All HP LCD monitors come with a three-year limited global warranty on investment and reduce the loss of productivity. Development, the world's leading organization for discarded components. Packaging...
..., making it to another country, and receive warranty service if the unit is available 24 hours a day on the Web at the local level. All HP LCD monitors come with a three-year limited global warranty on investment and reduce the loss of productivity. Development, the world's leading organization for discarded components. Packaging...
HP Display Assistant User Guide
Page 17
... process goes through an interactive series of any color. Using HP Display Assistant Color Calibration The color calibration will disable color calibration. Do not change your LCD. Color Calibration 13 Color Calibration The HP Display Assistant Color Calibration feature makes it possible to achieve sRGB...the distance and viewing angle as you will remove blue tint from Web sites and specifies a color matching technique to provide consistent monitor and output device color. Click the Color Calibration button on your viewing angle during the calibration process. 5. sRGB color is ...
... process goes through an interactive series of any color. Using HP Display Assistant Color Calibration The color calibration will disable color calibration. Do not change your LCD. Color Calibration 13 Color Calibration The HP Display Assistant Color Calibration feature makes it possible to achieve sRGB...the distance and viewing angle as you will remove blue tint from Web sites and specifies a color matching technique to provide consistent monitor and output device color. Click the Color Calibration button on your viewing angle during the calibration process. 5. sRGB color is ...