To provide an electrooptical device capable of cooling the device while suppressing a display defect, and to provide an electronic apparatus.

An electrooptical device includes an electrooptical panel 100 formed by an electrooptical substance 50 sandwiched between a first substrate 10 and a second substrate 20; and a first parting member 61 disposed on the first substrate 10 on a side of the electrooptical substance 50, having thermal conductivity higher than that of the first substrate 10 and light-shielding an outer region of a display region. The first substrate 10 is formed to be larger in plan view than the second substrate 20. At least a part of the first parting member 61 is exposed from the second substrate 20 in plan view.