| 摘要 |
A matrix type display device including: a photosensor (54), provided in a display region, for outputting a signal corresponding to an intensity of light emitted to the photosensor; a TFT (52) of n-channel type, the TFT serving as a source follower including a gate to which the signal is inputted; and light intensity detecting means for detecting the intensity of the light by detecting an output of the source follower, which is the TFT (52). The TFT (52) includes a drain to which a first pulse signal (Vpulse2) having a first pulse is inputted, the first pulse rising from a low level to a high level in a state where the signal is inputted to the gate of the TFT (52). |
