Patent ID: 6867752

Claim:
A portable information processing system comprising: a display device to be worn by a user on the user's head, said display device comprising a liquid crystal panel having a pixel portion, a driver portion and an image sensor portion; and a portable information terminal to be used by the user; said liquid crystal panel comprising: a transparent substrate having at least one pixel; a first thin film transistor and a second thin film transistor disposed in said at least one pixel; a first interlayer insulating film covering said first and second thin film transistors; a photoelectric conversion element formed on said first interlayer insulating film and electrically connected to said first thin film transistor through said first interlayer insulating film wherein said photoelectric conversion element comprises a first electrode formed on said first interlayer insulating film, a photosensitive semiconductor film formed on the first electrode, and a transparent second electrode formed on the photosensitive semiconductor film; a second interlayer insulating film formed over said first interlayer insulating film and said photoelectric conversion element; and a transparent pixel electrode formed on said second interlayer insulating film and electrically connected to said second thin film transistor; wherein said display device displays an image from said portable information terminal; wherein data is sent and received between said display device and said portable information terminal by infrared rays.