Display device, display module, and electronic device

A display device comprising:

• a first pixel and a second pixel;
• a first wiring configured to be supplied with a first signal;
• and
• a second wiring configured to be supplied with a second signal,
• wherein each of the first pixel and the second pixel includes a light-emitting element, a first transistor, a second transistor, a third transistor, and a capacitor,
• wherein the first wiring and one electrode of the capacitor are electrically connected to each other through a channel formation region of the first transistor,
• wherein the second wiring and the other electrode of the capacitor are electrically connected to each other through a channel formation region of the second transistor,
• wherein the one electrode of the capacitor a gate of the third transistor are electrically connected to each other,
• wherein one of a source and a drain of the third transistor and the light-emitting element are electrically connected to each other,
• wherein the light-emitting element includes a first light-emitting unit and a second light-emitting unit,
• wherein one of the first light-emitting unit and the second light-emitting unit exhibits blue light,
• wherein a light-emitting substance of the first light-emitting unit and a light-emitting substance of the second light-emitting unit are different from each other,
• wherein the light-emitting element of the first pixel and a color conversion layer overlap with each other, and
• wherein the color conversion layer is configured to convert light emitted by the light-emitting element of the first pixel into light having a longer wavelength.

A display device comprising:

• a first pixel and a second pixel;
• a first wiring configured to be supplied with a first signal;
• and
• a second wiring configured to be supplied with a second signal,
• wherein each of the first pixel and the second pixel includes a light-emitting element, a first transistor, a second transistor, a third transistor, and a capacitor,
• wherein the first wiring and one electrode of the capacitor are electrically connected to each other through a channel formation region of the first transistor,
• wherein the second wiring and the other electrode of the capacitor are electrically connected to each other through a channel formation region of the second transistor,
• wherein the one electrode of the capacitor a gate of the third transistor are electrically connected to each other,
• wherein one of a source and a drain of the third transistor and the light-emitting element are electrically connected to each other,
• wherein the light-emitting element includes a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit,
• wherein at least one of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit exhibits blue light,
• wherein two of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit exhibit fluorescence,
• wherein the other of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit exhibits phosphorescence,
• wherein the light-emitting element of the first pixel and a color conversion layer overlap with each other, and
• wherein the color conversion layer is configured to convert light emitted by the light-emitting element of the first pixel into light having a longer wavelength.