LOW-POWER LED BACKLIGHTING ENHANCES LCD BRIGHTNESS
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CI Lumen Industries has announced patent-pending LED backlighting for a variety of display panels. The backlighting was developed for panels requiring brightness levels of 800 nits or more - a requirement for outdoor viewing, in particular. The backlighting is suitable for panels produced by a broad spectrum of manufacturers, ranging in size from 5 to 19 in. and hibrighted to 800 to 1300 nits at low power levels.
For example, a typical 15-in. panel retrofitted with CI Lumen’s LED
backlighting technology at 1000 nits would consume 24 W of power, while
a solution using cold cathode fluorescent lamps (CCFLs) of equivalent
brightness would require 65 W, the company says.
It adds that the improved ruggedness of LED backlighting versus traditional CCFL methodology results in a significant increase in reliability and product life. Because a solid state LED is inherently less fragile than a glass tube filled with pressurized gasses, shock and vibration test results demonstrate improvements of greater than an order of magnitude. Life testing at equivalent brightness levels has produced similar and improved results with common product lifetimes of 60,000 to 100,000 h with little or no degradation. Even at end-of-life, the wear out mechanism is non catastrophic, such as a single lamp in an array failing as opposed to loss of the entire backlight function with a CCFL solution.
ci-lumen.com
It adds that the improved ruggedness of LED backlighting versus traditional CCFL methodology results in a significant increase in reliability and product life. Because a solid state LED is inherently less fragile than a glass tube filled with pressurized gasses, shock and vibration test results demonstrate improvements of greater than an order of magnitude. Life testing at equivalent brightness levels has produced similar and improved results with common product lifetimes of 60,000 to 100,000 h with little or no degradation. Even at end-of-life, the wear out mechanism is non catastrophic, such as a single lamp in an array failing as opposed to loss of the entire backlight function with a CCFL solution.
ci-lumen.com
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