Patent ID: 7692734

Claim:
A liquid crystal device comprising: a liquid crystal panel including a first and second substrate, the liquid crystal panel being illuminated by illumination light that is incident on a rear side of the liquid crystal panel; a liquid crystal layer that is arranged between the first and second substrates; a sealing material arranged between the first and second substrates that seals the liquid crystal layer therebetween; an optical plate arranged on a front side of the liquid crystal panel; and a control element that controls an amount of illumination light of an image displayed on the liquid crystal panel, wherein: the liquid crystal panel includes a light receiving element that receives ambient light, the light receiving element is arranged in a position where at least a portion of a light receiving surface of the light receiving element does not overlap the optical plate when the liquid crystal panel is seen from a plan view, the light receiving element is arranged in a position where the light receiving surface of the light receiving element overlaps the liquid crystal layer when seen from a plan view, and a transmission area which allows the ambient light to be transmitted is formed on the optical plate at a position where the optical plate overlaps at least a portion of the light receiving surface.