Product category:
LCD Modules
News Release from: Trident | Subject: Siemens 60i-15XP
Edited by the Electronicstalk Editorial
Team on 14 April 2003
Novel long-life backlight is bright
outdoors
The latest Siemens 15in colour TFT display uses a Planon mercury-free backlight that provides at least twice the life expectancy of a cold cathode fluorescent lamp, even at extreme temperatures.
Trident Microsystems has a new 15in colour TFT display with a Planon mercury-free backlight giving at least twice the life expectancy of a cold cathode fluorescent lamp (CCFL), even at extreme temperatures, as well as vastly reduced environmental recycling issues Rated for full-performance operation between -10 and +60C, the new Siemens 60i-15XP 15in XGA TFT panel from Trident is ideal for outdoor applications like kiosks, navigation devices onboard ships, cab and cockpit displays and in petrol pumps
This article was originally published on Electronicstalk on 14 May 2008 at 8.00am (UK)
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The mercury-free Planon backlight system fitted to the panel has a rated life in excess of 100kh, and is capable of being started repeatedly at low temperatures with no reduction in lifetime expectation.
Conventional CCFL tubes suffer shortened life when started frequently at low temperatures - and typically offer much shorter rated lives of around 50kh at room temperature, down to as little as 2kh below freezing point.
The Planon backlight also achieves virtually full brightness at low temperatures, almost immediately.
Trident's range of Siemens TFT panels is supported with wide operation temperature interface cards and cables.
According to Trident, the cost of a Siemens panel plus a high-specification interface is usually significantly lower than that of a 'high specification backlight' fitted to a conventional panel, with the added benefit of wide temp performance and excellent shock and vibration tolerance.
The inverter needed to power the backlight is supplied, and runs from 24V DC.
In contrast to tubular lamps, the Planon backlight lamps from Osram are flat like a tile, only one centimetre thick and can be exactly fitted to every screen size.
The light is generated in a manner different to that of the classical fluorescent lamp: xenon gas inside the 'tile' is excited by a carefully controlled series of 2kV pulses through a catalysing dielectric.
As the xenon excitation decays, UV radiation is given off and a phosphor coating inside the front of the glass package is stimulated to give off visible light.
The absence of mercury brings the advantage that the disposal of the lamp poses no environmental problems.
Furthermore, the new flat lamp permits the use of a true energy-saving switch-when switched on again, it immediately delivers its full brightness.
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