| 摘要 |
PURPOSE: A display apparatus is provided to distinguish contact through a separate device and distinguish a contact location by an optical sensor. CONSTITUTION: An optical layer is arranged on the second substrate(102). The optical layer includes a plurality of pixels and an optical sensor array layer(100). The pixels display an image. The optical sensor array layer detects a touch location on the display device. A touch detecting unit detects whether the display device is detected.
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