Display device

摘要

The display device has a display panel where a photosensor and a transistor including an oxide semiconductor layer are arranged. The display device detects a shadow of the object, which is projected on the display panel when the object approaches the display panel and blocks ambient light, with a photosensor, whereby a position or motion of the object is detected. Even when the object is not in contact with the display panel, the object can be detected.

主权项

1. A display device comprising:
a display panel including first pixels and second pixels; and an image processing portion electrically connected to the display panel, wherein each of the first pixels comprise a first photosensor and a first transistor including a first oxide semiconductor layer, wherein each of the second pixels comprises a second photosensor and a second transistor including a second oxide semiconductor layer, wherein each of the first photosensors detects an object which is not in contact with the display panel, wherein each of the second photosensors detects a presence of the object which is in contact with the display panel, and wherein off-state current per micrometer of a channel width of each of the first transistor and the second transistor is 100 aA/μm or less at a gate voltage of −1 V to −10 V.