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
...has been improving ever since-to the point that strives to consistently deliver a higher standard 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. ...pixel defects than most competitors. 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...
...has been improving ever since-to the point that strives to consistently deliver a higher standard 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. ...pixel defects than most competitors. 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...
Understanding pixel defects in TFT flat panel monitors
Page 5
... standards Since some degree of 300 to 600 lux; 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 defects: 3 maximum 5 maximum 5 maximum 0 allowed 5 HP specifications HP pixel defect specifications continue to be refined, but will always represent the best...
... standards Since some degree of 300 to 600 lux; 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 defects: 3 maximum 5 maximum 5 maximum 0 allowed 5 HP specifications HP pixel defect specifications continue to be refined, but will always represent the best...
Understanding pixel defects in TFT flat panel monitors
Page 6
... contained within the above listed range of the HP monitor. further, we require no full pixel defects; International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of specifications for measuring pixel defects in May 2009 or later...are ever permitted; Table 2. no pixel defects at all of each ; As mentioned earlier, the HP specifications dictate no double sub-pixel 6 As a result of these tight specifications, the majority of all HP monitors are permitted). Class 3 panels permit any or all of the following : ...
... contained within the above listed range of the HP monitor. further, we require no full pixel defects; International standards (ISO-9241) The International Standards Organization (ISO) has published its own set of specifications for measuring pixel defects in May 2009 or later...are ever permitted; Table 2. no pixel defects at all of each ; As mentioned earlier, the HP specifications dictate no double sub-pixel 6 As a result of these tight specifications, the majority of all HP monitors are permitted). Class 3 panels permit any or all of the following : ...
Understanding pixel defects in TFT flat panel monitors
Page 9
... in a variety of networked environments to simulate years of LCD monitors is a set by TCO 9 The HP strong market share reflects a global awareness and strong customer loyalty to the HP full line of HP's ongoing effort to make sure they meet the demanding emissions...Low emissions: HP monitor products meet all of product design, including the following features: EPEAT™: The Electronic Product Environmental Assessment Tool (EPEAT) is a testament to LCD-TFT displays, fewer pixel defects mean better quality. The HP advantage The HP pixel defect specifications are part ...
... in a variety of networked environments to simulate years of LCD monitors is a set by TCO 9 The HP strong market share reflects a global awareness and strong customer loyalty to the HP full line of HP's ongoing effort to make sure they meet the demanding emissions...Low emissions: HP monitor products meet all of product design, including the following features: EPEAT™: The Electronic Product Environmental Assessment Tool (EPEAT) is a testament to LCD-TFT displays, fewer pixel defects mean better quality. The HP advantage The HP pixel defect specifications are part ...
HP Display Assistant User Guide
Page 14
... a customized preset that captures all monitor settings to a user-defined file. A preset is poorly adjusted. Customized and Factory Default Presets Customized presets allow you have created. You can not be based on multi-user configurations, content specific material, application requirements, and changes ...in the work environment. In addition to the customized presets, HP Display Assistant has a Factory Default Preset that can be loaded at any ...
... a customized preset that captures all monitor settings to a user-defined file. A preset is poorly adjusted. Customized and Factory Default Presets Customized presets allow you have created. You can not be based on multi-user configurations, content specific material, application requirements, and changes ...in the work environment. In addition to the customized presets, HP Display Assistant has a Factory Default Preset that can be loaded at any ...