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Samsung makes display driver with touch sensor

Posted: 06 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Samsung? display driver? touch sensor? touch panel? LCD?

Samsung Electronics said it has developed what it claims is the world's first mobile display driver IC combining the display driver and readout functions for embedded display panels.

Samsung said the technology integrates a touch-sensitive sensor into pixels, eliminating the need for a separate touch panel. This raises light transmissivity, improves brightness and provides sharper images.

"This method will accelerate the process of developing lighter and slimmer mobile products that feature a touch screen," said Lee Myung-Hee, VP of Samsung's advanced DDI design team.

LCD panels with touch-screen capabilities need an additional panel that contains touch sensors mounted on top of the LCD panel. This requires special assembly of extra components. The extra layer of the touch-screen panel also reduces the amount of the transmitted light from a display and causes the ambient light to reflect off the display panel, resulting in degradation of the display's performance.

Samsung said its device senses either charge or current signals from the TFT sensor array and converts them to data used for image processing.

- Sean Shim
EE Times

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