Patent ID: 7602451

Claim:
An electro-optical device comprising: an electro-optical panel; an input device, that is arrange over a front surface of the electro-optical panel, including a first substrate that has a coordinate input surface; a second substrate that faces the first substrate, wherein the first substrate and the second substrate are made of glass substrates; and an indicator that directly indicates a position of the coordinate input surface where input is possible; wherein the first substrate includes a distinct thin-plate region, at the coordinate input surface of the first substrate, having a thickness that is uniform and substantially thinner than the periphery of the coordinate input surface; wherein a liquid material is sealed between the first substrate and the second substrate, wherein the liquid material has a difference in refractive index from glass smaller than a difference in refractive index from air; wherein the electro-optical panel is a liquid crystal panel which includes a third substrate arranged on the front surface of the electro-optical panel, a fourth substrate facing the third substrate, and liquid crystal interposed between the third substrate and the fourth substrate; wherein the fourth substrate includes a thin-plate region at a position facing the coordinate input surface of the input device, wherein the thin-plate region of the fourth substrate is at a surface opposite to a flat surface of the fourth substrate, wherein the flat surface is in direct contact with the liquid crystal, wherein the thin-plate region of the fourth substrate has a thickness that is uniform and thinner than the periphery of the fourth substrate.