Electro-optical device and wearable electronic device

Electro-optical apparatus includes an optical module, a display module, and a camera module. The optical module includes a mirror layer switcher block operating in accordance with the selected mode of the transmissive mode and the reflective mode. The display module, the camera module, generating the image data, and obtains external image. The switcher block mirror layer and provides the generated image data to correspond to the transmissive mode and the reflective mode in different directions.