Display device including capacitor having transparency
A display device is provided including a plurality of pixels, wherein the plurality of pixels is arranged in a matrix form, wherein each of the plurality of pixels has an emission region and a transparent region, and wherein the emission region has a light-emitting element, and the transparent region has at least a part of a storage capacitor having transparency and is covered with at least one electrode of the storage capacitor, a first electrode covers the plurality of pixels, a light-emitting layer is arranged below the first electrode, a second electrode is arranged below the light-emitting layer, and the storage capacitor includes the first electrode.
1. A display device comprising:
a first substrate having transparency;
a plurality of pixels arranged in a matrix form on the first substrate; and
a second substrate having transparency on the plurality of pixels,
the plurality of pixels each comprises:
a non-transparency region including a first transistor, a second transistor connected to the first transistor, and a light-emitting element connected to the second transistor on the first transistor and the second transistor; and
a transparency region including a capacitor connected to the second transistor,
wherein
the light emitting element includes an anode, a light-emitting layer on the anode, and a cathode on the light-emitting layer,
the anode includes a light reflection layer,
the cathode has transparency,
the anode overlaps the first transistor and the second transistor,
the light-emitting element emits light in a direction from the light-emitting layer toward the second substrate,
the first transistor and the second transistor are arranged between the first substrate and the anode,
a first insulation layer is arranged between the light emitting element and the first transistor and extended to the capacitor,
the capacitor includes a first transparent electrode and a second transparent electrode,
a part of the first insulation layer is arranged between the first transparent electrode and the second transparent electrode,
a first part of the capacitor is arranged in the transparency region,
a second part of the capacitor is arranged in the non-transparency region,
a second insulation layer is arranged between the second part of the capacitor and the first transistor, and
a side surface of the second insulation layer is covered by the first part of the capacitor so that the second insulation layer is removed in the transparency region.
2. The display device according to claim 1 , wherein
the second transparent electrode of the capacitor is electrically connected to the cathode.
3. The display device according to claim 2 , wherein
the second transparent electrode of the capacitor and the cathode are in contact with each other at the transparency region.
4. The display device according to claim 1 , wherein
the first transparent electrode of the capacitor is arranged for each pixel individually, and
the second transparent electrode of the capacitor covers the plurality of pixels continuously.
5. The display device according to claim 1 , wherein
the first insulation layer includes a silicon nitride.