LCD Screen With Embedded Optical Sensors 113
dk3nn3dy writes "Sharp has developed a LCD display with optical sensors built into the displays pixels, without requiring a touch-sensitive film to be bonded on top of the regular screen. The optical sensor is similar to that used in scanners, allowing for notes or business cards to be scanned by the screen itself. As the optical recognition technology is built into the pixels it also simplifies tactile recognition based on simultaneously touching multiple points. Future uses include fingerprint authentication on the screen of your mobile phone or PDA, or iPhone style touch recognition. Volume production will start next spring."
Re:Is it true? (Score:2, Informative)
All OLED screens can do this already (Score:5, Informative)
Don't believe me? Here is a primer:
http://mvh.sr.unh.edu/mvhinvestigations/light_inv
LED do that without sensors (Score:2, Informative)
It is known that the electric resistence of a LED is lower when it is lit up externally so if you put something bright near it, the resistence lowers because it receives its own light back. I wonder if it works for organic leds too, so if you can sense the resistence of every pixel on a OLED display you can know if there is something bright in front of each pixel. The image would be B/W I guess but I think it must be cheap and enough sensitive to make multi-touch displays.
White hand palms in colour people might mean evolution thinks further than we do.