To provide a self-luminescent light panel causing no functional deterioration even if an environmental temperature changes, and its manufacturing method.

In this self-luminescent panel 10, a self-luminescent element 15 formed by holding at least one or more light emitting functional layers between a pair of electrodes 12, 14 is formed on a substrate 11, a sealing member 16 to isolate the self-luminescent element 15 from the outside air, and the sealing member 16 is pasted to the substrate 11 with an adhesive layer 18 to form a sealed space M covering the self-luminescent element 15. The internal pressure P of the sealed space M in which the self-luminescent element 15 is sealed by the sealing member 16 at t°C satisfies a formula (1). In the formula, Pmax is the maximum outside atmospheric pressure assumed in a use environment, Pmin is the minimum outside atmospheric pressure assumed in the use environment, Pd is cohesion breaking atmospheric pressure at the maximum preservation temperature, tmax is the maximum preservation temperature, tmin: the minimum preservation temperature.