Toshiba Matsushita Display Technology (TMD) has developed a new poly-silicon (LTPS) liquid crystal display (LCD) that
allows users to select between two input capabilities: by directly
touching an icon or button on the LCD screen with a finger, or by direct handwriting onto the LCD screen with an optic pen.
TMD has been strategically allocating resources to develop the System On
Glass (SOG) technology taking advantage of the inherent characteristics of
LTPS technology. In April 2003, TMD succeeded in developing the world's
first LCD that directly captured images from the display screen (an Input
Display). Since then, TMD has introduced other products that incorporate
such technology into the market, including an Input Display with touch
panel function in December, 2004 and an Input Display with optic pen input
function in September, 2005.
The new development has realized a multi-functional Input Display which
offers more sophisticated finger-touch input functions, including slide-
and touchpad-input options, achieved through further refinement of TMD?s
know-how in LTPS LCD-specific technologies, such as: enhanced response
characteristics of high-speed driving circuits and photo sensors, improved
accuracy of signal processing, and optic pen input function.
The newly developed prototype is based on SOG technology much like its
predecessor Input Displays in that it integrates photo sensor and signal
processing functions onto the glass surface of the LCD, and thus, unlike
existing displays, there is no need for additional incorporation of any
touch panel or other components in or on the display. The company expects
that the new technology will find application in mobile equipment, where
there is high expectation and need for further thinness, compactness,
weight reduction, and reliability.
The new prototype will be exhibited at TMD?s booth at FPD International
2006, a leading international exhibition and forum on flat panel displays,
held at Pacific Convention Plaza (PACIFICO) Yokohama, Kanagawa Prefecture,
Japan, from October 18 to 20, 2006.
Screen size (diagonal): 7.1cm (2.8-inch)
Number of pixels: 400 (H) x RGB x 240 (V)
Display Transmissive: TFT LCD, with 65K colors