Stop LCD panels - indoor

LCD information panels are suitable for indoor areas of transport terminals or shopping malls (passenger waiting areas, orientation points) where weather conditions and direct sunlight do not affect the interior, providing more options for communicating information to passengers or for entertainment. These panels may not meet the requirement of being readable in direct sunlight and therefore may have a lower luminance of the LCD panel than outdoor panels, i.e. more than 400 Cd/m2 (lower luminance is not appropriate due to longer panel life). The environment is thus equivalent to a normal domestic environment except for temperatures. The need to comply with the "anti-vandal design" may be an issue.

Therefore, standard displays can be used for information system solutions using LCD displays, except for their lifetime (minimum lifetime of 50 000 hours). If we want to have a longer lifetime, it is possible to use a high luminance LCD display and reduce the luminance to the level for indoor use. By not having the display on full power all the time, the lifetime will be extended.

Indoor LCD panels can have the following connection types:

• to the vehicle arrivals data server (on-line or off-line display or depending on the type of panel activity)
• to a traffic information server or advertising server - MEDIA server
• to a video server from which films for children in waiting rooms are downloaded.

The panel can then have dedicated time windows for alternating this information (e.g. after 10 seconds). The LCD then downloads the information from the servers separately and runs them at defined intervals. An exception is LCDs for movie playback, which are designed primarily for movie projection.