Luminescent device and method of manufacturing the same including forming a plurality of notches or slits in a substrate to enable planar light emittance in a curved state

A luminescent device comprising an electroluminescence (EL) sheet having at least an anode layer, a cathode layer, and an organic EL layer formed on a substrate, the organic EL layer being placed between the anode layer and the cathode laver,

• wherein
• a plurality of notches are formed at a rim of the substrate to enable a planar light emittance in a curved state, each of the notches extending from an outer perimeter of the substrate towards a center of the substrate in a plan view,
• patterning is performed on the substrate so that the organic EL layer avoids the notches, and the anode layer and the cathode layer overlap the organic EL layer, and
• part of the anode layer and part of the cathode layer are exposed through the respective notches of the substrate.

A luminescent device comprising an electroluminescence (EL) sheet having at least an anode layer, a cathode layer, and an organic EL layer formed on a substrate, the organic EL layer being placed between the anode layer and the cathode layer,

• wherein
• a plurality of slits are formed at a rim of the substrate to enable a planar light emittance in a curved state, each of the slits extending from an outer perimeter of the substrate towards a center of the substrate in a plan view,
• patterning is performed on the substrate so that the anode layer, the cathode layer, and the organic EL layer avoid the slits, and
• part of the anode layer and part of the cathode layer are exposed between the slits of the substrate.