Operational Guidelines Relating to 24/7 Usage
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1. These guidelines provide tips to help users minimize the risk of these problems occurring and thereby prolong the service life of LCD public displays In particular to minimize the risk of LCD panel deterioration Mitsubishi Electric highly recommends an opera tional period of less than 18 hours per day for MDT Series products and less than 12 hours per day for LDT Series products Please note that other factors apart from operational period can also affect the extent of LCD panel deterioration For details please refer to the user manual of the relevant model li Image Persistence Short and Long term After a static image is continuously displayed on a screen for a certain period traces of the image may remain even after a different image is displayed This affect is known as short term image persistence One way of avoiding this is to switch off LCD public displays as much as possible when they are not in use When static images are continuously displayed for even longer periods it can result in long term image persistence which is very difficult to remedy and may involve dark patterns remaining at the edges of letters or boundaries of objects i image Staining Continuously displaying a certain image particularly a static image is likely to lead to accelerated aging issues such as loss or inconsistency of brightness or image staining due to the effect of heat light intensity from the backlight Once image staining occurs LCD public di2. 077 KOMAKI 07 50 27 May 7 05 27 May 7 05 3 Refresh images such as company logos and those with letters at regular intervals AV ELECTRIC Changes for the Better MITSUBISHI MITSUBISHI ELECTRIC ELECTRIC Changes for the Better Changes for the Better ax MITSUBISHI Fl ECTRIC Examples of Problematic Content Design When an on screen window is When simultaneously displayed patterns 3 Image staining and image persis displayed for a long period image have significantly different brightness tence tend to stand out on a gray persistence may occur at the window edges levels image persistence may occur at background Avoid excess use of gray Shift the position of windows regularly the boundary line between the patterns and where possible use primary colors that is avoid displaying windows in the Avoid placing these kinds of display for the background same position on the screen contents side by side NARITA 07 15 JOYLINE JN123 NARITA 07 15 JOYLINE JN 476 MITSUBISHI MITSUBISHI KANSAI 07 30 JOYLINE JN 476 KANSAI 07 30 F A ELECTRIC ELECTRIC Changes for the Better Sener ee S FIRST AIR FA077 KOMAKI 07 50 FA 077 07 50 On screen window High brightness and low brightness Image with a gray background there are high contrast areas at the window edges patterns placed side by side 1 For details regarding installation conditions please refer to the user manual of the relevant mo
3. MITSUBISHI R ELECTRIC for a greener tomorrow Changes Changes for the Better LCD PUBLIC DISPLAY Operational Guidelines Relating to 24 7 Usage of Mitsubishi Electric LCD Public Displays These operational guidelines provide information regarding 24 7 usage of our LCD public displays They are relevant to commercial applications such as flight information displays and digital signage boards where even 24 7 usage may be required Our LCD public displays differ from consumer grade television products in that they are electrically and mechanically designed for heavy use applications Highly reliable LCD panels and electrical components are used to secure sufficient durability for 24 7 usage However due to the characteristics of LCD technology today there are certain limitations in what Mitsubishi Electric can cover in product warranties These guidelines address this issue and support customers in long term use of Mitsubishi Electric public displays ey TT ibs W Mitsubishi Electric Products Compatible with 24 7 Usage MDT4elS MDTSS5IS MDT552S MDT65eS MDTZOIS LDT323V LDT4eeV LT46eV LDTS5IV The most critical concerns regarding 24 7 usage of LCD panels are image persistence and accelerated aging issues e g loss or inconsistency of brightness and image staining These issues are part of the current LCD technology and are unavoidable at this stage For this reason Mitsubishi Electric cannot cover these issues in a warranty
4. del MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN http Global MitsubishiElectric com ENVIRONMENTAL VISION TECHNOLOGY amp A CTION Revised publication effective XXX 2013 Superseding publication X X00 0 00000 X XXX 2013 Specifications are subject to change without notice
5. splays cannot be restored to their original state The affected area appears dark inconsistent and there is a possibility that the staining will be visible regardless of the images displayed static and or moving W Tips for Long term Use of LCD Public Displays The following tips are designed to help users minimize the risk of image persistence and image staining and secure use of LCD public displays for as long as possible Recommended Usage Settings Conditions 1 Switch off LCD public displays when they are not in use 2 Reduce brightness as much as possible 3 Reduce operating temperature as much as required e g room temperature 4 Use the screensaver function and or the power saving mode Recommendations for Content Design 1 We recommend design content comprised mainly of moving images When displaying static images insert moving images at appropriate intervals as a means to refresh the liquid crystal materials For the screensaver image use a moving image or fully black pattern JOYLINE JN 123 NARITA 07 15 MITSUBISHI JOYLINE JN476 KANSAI 07 30 ELECTRIC Changes for the Better FIRST AIR FA 077 KOMAKI 07 50 27 May 7 05 i Insert moving pictures such as promotional videos 2 Change the background pattern and letter colors regularly JOYLINE JN123 NARITA 07 15 JOYLINE JN 123 NARITA 07 15 JOYLINE JN 476 KANSAI 07 30 JOYLINE JN 476 KANSAI 07 30 FIRST AIR FA 077 KOMAKI 07 50 FIRST AIR FA
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