| 摘要 |
A liquid crystal display (LCD) device ( 100 ) having an integrated touchscreen, includes a touchscreen surface and LC layer ( 20 ) that are partitioned according to the touchscreen keys ( 200 ). A corresponding probe light source ( 82 ) and sensor ( 92 ) positioned behind each partition is assigned to the corresponding touchscreen key. Each probe light sensor is configured to detect user contact on the touchscreen surface by sensing a reflection of the probe light. To further distinguish between different keys, each key may be made active according to a scanning or timesharing process. In this process, when a particular key is active, the neighboring keys are inactive. The scanning/timesharing process may be performed during a touchscreen mode of operation, which is interleaved with a normal display mode.
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