DynaScan just launched two new 55-inch narrow bezel LCDs in the form of the DS55LT4 and DS55LT6. The DS55LT4 features a brightness spec of 2,500 cd/m², while the DS55LT6 is spec’d out at 5,000 cd/m². Both are direct LED local dimming back-lit and have only an 11.5 mm bezel. With direct local dimming, darker areas of an image receive less backlighting than lighter areas, as opposed to CCFL and edge-lit LED backlights which illuminate an entire screen at all times causing blacks and dark areas to appear washed out.
The DS55LT4 and DS55LT6 feature a narrow 11.5 mm bezel for tiled video wall applications. With built-in video daisy chaining, a single 1080p source can be used on video walls up to 6×6 in size without the need for any additional external video wall controller.
The DS55LT4 also utilizes a fanless thermal management system where heat is radiated away from high temperature areas while a sensor continuously monitors the internal temperature to protect the system from overheating. All of this is done without the use of any fans, resulting in silent operation and greatly reducing the potential of mechanical failure.
All the specs are here: http://www.dynascanusa.com/ds2_products.html