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Samsung Electronics Co. Ltd. today announced that it has developed an amorphous silicon (a-Si) seven-inch TFT-LCD panel that reproduces high resolution WVGA-level (800×480 pixels) colors on a single-chip.
The panel will be first publicly displayed during the first week of June at the Society for Information Display (SID) Symposium in San Francisco.
The single-chip design, with a contrast ratio of 400:1 and a brightness level of 450 units, uses Samsung?s ASG (amorphous silicon gate) technology. The ASG incorporates the date-driver IC function directly on the surface of the glass panel, while simultaneously integrating the T-con function within the drive-IC. In the single-chip design, the surface area of the drive circuit and the number of components that it contains are each one-third less than that used in existing WVGA panel designs, said Samsung .
The seven-inch LCDs are mostly used in mobile devices including DMB (digital multimedia broadcasting), PMP (portable multimedia players) and CNS (car navigation systems) and normally require four to seven drive ICs. Also, on a conventional seven-inch LCD panel, the T-con (time controller that drives the screen), power platform and other components typically are attached to a circuit board on the exterior of the LCD.
?Samsung Electronics has successfully challenged the generally accepted idea that a high degree of circuit integration using amorphous silicon is prohibitively difficult,? said Senior VP Hyung-Gul Kim, of Samsung?s LCD mobile display development team, in a statement. ?With our new seven-inch WVGA LCD prototype panel, dramatic improvements in LCD design are not only prudent, but also quite feasible using this highly reliable a-Si approach.?
<<Electronic News -- 05/15/06>>