Patent ID: 8395748

Claim:
An electro-optical display device comprising: a reflection-type liquid crystal panel including a driving substrate, a reflective layer disposed on the driving substrate, an opposing substrate having an outer side opposite the driving substrate, and a liquid crystal disposed between the driving substrate and the opposing substrate; a light-transmissive substrate disposed on the outer side of the opposing substrate; and a plurality of element substrates including at least the opposing substrate and the light-transmissive substrate, at least one substrate of the plurality of element substrates having negative thermal expansion coefficients and at least another substrate of the plurality of element substrates having positive thermal expansion coefficients, wherein under the condition that the thermal expansion coefficients of the opposing substrate and the light-transmissive substrate are α1 and α2, respectively, refractive indices of the opposing substrate and the light-transmissive substrate are n1 and n2, respectively, and thicknesses of the opposing substrate and the light-transmissive substrate are d1 and d2, respectively, the refractive indices n1 and n2 being within the range of 1.5±0.1, and a product sum operation value d1·α1+d2·α2 of the thicknesses and the thermal expansion coefficients being within the range of 0±9×10 −7 [mm/K].