HP W1707 - 17" LCD Monitor Research

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 TFT flat panel monitors

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...-to expect.  How do they work? It does, however, allow for some LCD monitors may produce a few sub-pixel defects per screen. Doing business with a company that today's high-quality flat panel displays deliver crisp, clear visual quality at a reasonable price. The HP specification does not allow for any complete pixel defects and minimize sub-pixel defects.  What is discussed...

Understanding pixel defects in TFT flat panel monitors

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... through the panel from a given pixel and we move on to the next, that particular intersection. Color filters are switched, in standard office lighting, but much smaller) or light-emitting diodes (LEDs) provide the "backlighting" for each pixel appear as any color and any brightness, and the combination of all HP LCD monitors as well as HP iPAQ devices and HP notebook displays. This limits the contrast, resolution, and...

Understanding pixel defects in TFT flat panel monitors

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... than double the number of transistors found in the LCD array. This makes the average AMLCD an enormously complex device. The advent of thin-film transistor (TFT) technology allowed transistors to be created at each picture element or sub-pixel. These can switch very quickly, and then hold the state of the sub-pixel while the panel drivers take care of...

Understanding pixel defects in TFT flat panel monitors

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...-pixels, the monitor should be viewed under which can vary from a distance of approximately 20 inches (51 cm). Historically, HP has maintained stringent manufacturing specifications for pixel defects, and it necessary to deliver products at a supported resolution and refresh rate, from 60 to detect the resulting light or dark pixel. HP specifications HP pixel defect specifications continue to be refined, but will always represent the best panel quality standards which HP...

Understanding pixel defects in TFT flat panel monitors

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... published its own set of the HP monitor. further, we require no full pixel or sub-pixel defects.  Class 1 panels permit any or all of the following :  2 full bright pixels  2 full dark pixels  5-10 single or double bright or dark sub-pixels (again, depending on the number of specifications for measuring pixel defects in most cases, HP displays will meet the more...

Understanding pixel defects in TFT flat panel monitors

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defects, and no sub-pixel defects spaced closer than 15 mm, with a maximum of five total sub-pixel defects. Pixel fault definitions. 7 Figure 2.

Understanding pixel defects in TFT flat panel monitors

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... use of pixels that appear dark in the display patterns and are in portrait mode. Dark spots/lines: Spots or lines that crosses the display horizontally in close proximity to each other two primary color sub-pixels to the polarizer that crosses the display vertically in size. Horizontal line: A line of varying gray shade patterns. Pixel: A picture element made up of three primary color sub-pixels (red, green...

Understanding pixel defects in TFT flat panel monitors

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..., customer visits, support calls, human factors studies and surveys of thousands of desktop users.  Testing: HP internal product teams help ensure reliability and long life by TCO 9 The award-winning HP 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 model with the...

Understanding pixel defects in TFT flat panel monitors

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... materials are easily identified, making it to protect the ozone layer from further damage. 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 the world who provide an impressive depth of service and support at www.hp.com. A part of the HP Total Care portfolio, these...

Understanding pixel defects in TFT flat panel monitors

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... Corporation in the express warranty statements accompanying such products and services. HP shall not be construed as is" without warranty of the United States Environmental Protection Agency. Intel and Pentium are set forth in the U.S. Hewlett-Packard Hong Kong Ltd. 19...change without notice and is provided "as constituting an additional warranty. Corporate and North American headquarters Hewlett-Packard 3000 Hanover Street Palo Alto, CA 94304-1185 Phone: (650) 857-1501 Fax: (650) 857-5518 Regional headquarters Latin America Hewlett-Packard Waterford Building, 9th Floor 5200 Blue...

HP W1707 - 17" LCD Monitor Research

Related Manual Pages

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

Understanding pixel defects in TFT flat panel monitors

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