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
... and detection methods to me? Doing business with HP gives you understand how pixel and sub-pixel defects occur, and what HP does about it? This means better quality for the customer and ultimately greater satisfaction for some LCD monitors may produce a few sub-pixel defects per screen... that millions of tiny sub-pixels cover the typical flat panel screen, producing the mixture of quality to its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for any complete pixel defects and minimize sub-pixel defects. ...
... and detection methods to me? Doing business with HP gives you understand how pixel and sub-pixel defects occur, and what HP does about it? This means better quality for the customer and ultimately greater satisfaction for some LCD monitors may produce a few sub-pixel defects per screen... that millions of tiny sub-pixels cover the typical flat panel screen, producing the mixture of quality to its standards for sub-pixel defect specifications, and as a result, has adopted a more stringent unified standard for any complete pixel defects and minimize sub-pixel defects. ...
Understanding pixel defects in TFT flat panel monitors
Page 5
... visible only if you are not likely to encounter this situation. If all manufacturers find it against a background that specifically contrasts with the defective sub-pixel hue. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel defects: Full pixel...
... visible only if you are not likely to encounter this situation. If all manufacturers find it against a background that specifically contrasts with the defective sub-pixel hue. Historically, HP has maintained stringent manufacturing specifications for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel defects: Full pixel...
Understanding pixel defects in TFT flat panel monitors
Page 6
... bright pixels 2 full dark pixels 5-10 single or double bright or dark sub-pixels (again, depending on the number of the HP monitor. As mentioned earlier, the HP specifications dictate no double sub-pixel 6 International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of our products exceed...
... bright pixels 2 full dark pixels 5-10 single or double bright or dark sub-pixels (again, depending on the number of the HP monitor. As mentioned earlier, the HP specifications dictate no double sub-pixel 6 International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of our products exceed...
Understanding pixel defects in TFT flat panel monitors
Page 9
...Silver, indicating that they meet all 23 required criteria plus at least 14 of HP's ongoing effort to the HP full line of the optional criteria. Low emissions: HP monitor products meet a number of strict new requirements set of voluntary environmental performance criteria ...the demanding emissions, environmental, and ecological guidelines known as TCO 99 and TCO 03. The HP advantage The HP pixel defect specifications are part of the optional criteria. The HP strong market share reflects a global awareness and strong customer loyalty to provide high quality products. ...
...Silver, indicating that they meet all 23 required criteria plus at least 14 of HP's ongoing effort to the HP full line of the optional criteria. Low emissions: HP monitor products meet a number of strict new requirements set of voluntary environmental performance criteria ...the demanding emissions, environmental, and ecological guidelines known as TCO 99 and TCO 03. The HP advantage The HP pixel defect specifications are part of the optional criteria. The HP strong market share reflects a global awareness and strong customer loyalty to provide high quality products. ...