A new color active-matrix TFT-LCD module product lineup for industrial applications from Toshiba America Electronic Components ( http://www.toshiba.com/taec ) incorporates long-life LED backlighting systems. The modules are designed to satisfy the requirements of a broad range of industrial applications, such as test and measuring equipment, medical equipment, portable handheld computing devices, and more, utilizing the latest LED backlighting technology.
The series includes five new LCD products: 5.7-inch QVGA 320 x 240, 6.5-inch VGA 640 x 480, 8.4-inch SVGA 800 x 600, 8.4-inch 1024 x 768, and 10.4-inch XGA 1024 x 768. All the products have replaceable, long-life, LED-based backlighting systems, and are designed such that a resistive touch panel can be added as an option.
These new, leading-edge LED-backlit modules address a growing demand in a wide variety of industrial LCD applications. The LED-based backlighting systems provide an average backlight lifetime of 70,000 hours, or approximately 8 years continuous operation, (to half-brightness of the initial luminance specification), which exceeds that of today’s common TFT LCDs for industrial applications utilizing long-life cold cathode fluorescent lamp (CCFL) backlighting systems.
TMD has achieved this by applying long-life LEDs, and by optimizing the thermal design of the industrial-type LED-based backlighting system based on TMD’s extensive experience in utilizing LED backlighting for mobile notebook PC TFT displays. The modules have been designed with a replaceable backlight structure to accommodate the product longevity requirements, and the harsh-usage environments, of industrial applications.
In addition, TMD has added the LED driver circuitry into the electrical interface for the displays, an added benefit for customers to simplify their design-in time and costs.
Compared to CCFL backlit displays, LED-backlit displays feature superior characteristics such as lighter weight, lower electrical noise, lower power consumption, and offer a wider adjustable luminance range. LED-backlit displays also reduce the environmental impact, in consideration of both material and energy consumption, since they are mercury-free1 and lower in power consumption.