Light emitting device

A light-emitting device comprising:

• a first transistor comprising a first gate electrode;
• a second transistor comprising a second gate electrode;
• a first light-emitting element that emits red light;
• a second light-emitting element that emits green light;
• a third light-emitting element that emits blue light;
• and
• a color filter,
• wherein the color filter comprises a first coloring layer that selectively transmits red light, a second coloring layer that selectively transmits green light, and a third coloring layer that selectively transmits blue light,
• wherein the first to third light-emitting elements respectively correspond to the first to third coloring layers,
• wherein each of the first to third light-emitting elements has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer,
• wherein the electroluminescent layer of the second light-emitting element overlaps with the electroluminescent layer of the first light-emitting element and the first gate electrode, and
• wherein the electroluminescent layer of the second light-emitting element overlaps with the electroluminescent layer of the third light-emitting element and the second gate electrode.

A light-emitting device comprising:

• a first transistor comprising a first gate electrode;
• a second transistor comprising a second gate electrode;
• a first light-emitting element that emits red light;
• a second light-emitting element that emits green light;
• a third light-emitting element that emits blue light;
• and
• a color filter,
• wherein the color filter comprises a first coloring layer, a second coloring layer, and a third coloring layer,
• wherein the first to third light-emitting elements respectively correspond to the first to third coloring layers,
• wherein a color purity of the red light which has a wide wavelength range is enhanced by the first coloring layer,
• wherein a color purity of the green light which has a wide wavelength range is enhanced by the second coloring layer,
• wherein a color purity of the blue light which has a wide wavelength range is enhanced by the third coloring layer,
• wherein each of the first to third light-emitting elements has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer,
• wherein the electroluminescent layer of the second light-emitting element overlaps with the electroluminescent layer of the first light-emitting element and the first gate electrode;
• and
• wherein the electroluminescent layer of the second light-emitting element overlaps with the electroluminescent layer of the third light-emitting element and the second gate electrode.

A light-emitting device comprising:

• a transistor comprising a gate electrode;
• a first light-emitting element;
• a second light-emitting element;
• and
• a color filter,
• wherein the color filter comprises a first coloring layer and a second coloring layer,
• wherein light in a first wavelength region of first light emitted from the first light-emitting element is extracted by the first coloring layer,
• wherein light in a second wavelength region of second light emitted from the second light-emitting element is extracted by the second coloring layer,
• wherein each of the first light-emitting element and the second light-emitting element has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer, and
• wherein both of the electroluminescent layer of the second light-emitting element and the electroluminescent layer of the first light-emitting element overlap with the gate electrode.

A light-emitting device comprising:

• a transistor comprising a gate electrode;
• a first light-emitting element;
• a second light-emitting element;
• and
• a color filter,
• wherein the color filter comprises a first coloring layer and a second coloring layer,
• wherein light in a first wavelength region of first light emitted from the first light-emitting element is extracted by the first coloring layer,
• wherein light in a second wavelength region of second light emitted from the second light-emitting element is extracted by the second coloring layer,
• wherein the extracted light has an enhanced color purity than each of the first or second light,
• wherein each of the first light-emitting element and the second light-emitting element has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer, and
• wherein both of the electroluminescent layer of the second light-emitting element and the electroluminescent layer of the second light-emitting element overlap with the gate electrode.

A light-emitting device comprising:

• a transistor comprising a gate electrode;
• a first light-emitting element;
• a second light-emitting element;
• and
• a color filter,
• wherein the color filter comprises a first coloring layer and a second coloring layer,
• wherein a spectrum of first light emitted from the first light-emitting element is different from a spectrum of second light emitted from the second light-emitting element,
• wherein light in a first wavelength region of the first light is extracted by the first coloring layer,
• wherein light in a second wavelength region of the second light is extracted by the second coloring layer,
• wherein each of the first light-emitting element and the second light-emitting element has a first electrode, an electroluminescent layer formed on the first electrode, and a second electrode formed on the electroluminescent layer, and
• wherein both of the electroluminescent layer of the second light-emitting element and the electroluminescent layer of the first light-emitting element overlap with the gate electrode.