Integrated image-input type display unit

An integrated image-input type display unit which comprises:

• an image input/output device composed of:
• a liquid-crystal cell, the cell containing light-sensitive molecules capable of changing their structure to a first molecular structure when being irradiated with light of a first wavelength and to a second molecular structure when being irradiated with light of a second wavelength and liquid crystal molecules capable of changing their alignment in accordance with the structural change of the light-sensitive molecules, both kinds of molecules being hermetically sandwiched between two transparent substrates;
• a first group of electrodes;
• and a second group of electrodes;
• first electrode-driving means for driving the first group of electrodes;
• second electrode-driving means for driving the second group of electrodes;
• illuminating means for irradiating the image input/output device with light of the first wavelength and light of the second wavelength;
• reading means for reading capacities produced at places corresponding to intersection points formed between the first-group electrodes and the second-group electrodes in accordance with a pulse voltage applied to the first-group electrodes;
• and
• control means for controlling the first electrode driving means, the second electrode driving means, the illuminating means and the reading means in such a manner that, when displaying an image, a first image is displayed on the image input/output device by changing the alignment of the liquid crystal molecules corresponding to intersection points between the first group electrodes and the second electrodes with light of first wavelength and, when inputting an image, a second image is inputted into the image input/output device by irradiating with light of the second wavelength, a pulse voltage is applied to the first group of electrodes and capacities at places corresponding to intersection points between the first-group electrodes and the second-group electrodes are read to read the second image.