Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
摘要
說明書
The pixel portion 602 includes a plurality of pixels including a switching TFT 611, a current controlling TFT 612, and a first electrode 613 electrically connected to a drain of the current controlling TFT 612. Note that an insulator 614 is formed to cover an end portion of the first electrode 613. The insulator 614 can be formed using a positive photosensitive resin film.
In order to improve coverage with a film that is formed over the insulator 614, the insulator 614 is formed to have a curved surface with curvature at its upper or lower end portion. For example, in the case where photosensitive acrylic is used as a material of the insulator 614, only the upper end portion of the insulator 614 preferably has a curved surface. The radius of curvature of the curved surface is preferably greater than or equal to 0.2 μm and less than or equal to 0.3 μm. As the insulator 614, either a negative photosensitive material or a positive photosensitive material can be used.
