Display device and method of repairing the same
A display device includes a pixel unit configured to emit light. The display device includes a lower substrate, a plurality of light-emitting devices, an upper substrate, a bank layer, and a functional layer. The plurality of light-emitting devices is on the lower substrate. The upper substrate is on the lower substrate. The plurality of light-emitting devices is between the upper substrate and the lower substrate. The bank layer is on one surface of the upper substrate facing the lower substrate. The bank layer includes partition walls defining a central opening corresponding to the pixel unit and an auxiliary opening adjacent to the central opening. The functional layer fills the central opening. The functional layer includes at least one of quantum dots and scattering particles. The plurality of light-emitting devices includes a main light-emitting device overlapping the central opening and an auxiliary light-emitting device overlapping the auxiliary opening.
1 . A display device comprising a pixel unit configured to emit light, the display device comprising:
a lower substrate;
a plurality of light-emitting devices on the lower substrate;
an upper substrate on the lower substrate, the plurality of light-emitting devices being between the upper substrate and the lower substrate;
a bank layer on one surface of the upper substrate facing the lower substrate, the bank layer comprising partition walls defining a central opening corresponding to the pixel unit and an auxiliary opening adjacent to the central opening;
a color filter layer between the upper substrate and the bank layer and overlapping the central opening and the auxiliary opening, the color filter layer comprising a plurality of color filters overlapping each other in a thickness direction; and
a functional layer filling the central opening, the functional layer comprising at least one of quantum dots and scattering particles,
wherein the plurality of light-emitting devices comprises a main light-emitting device overlapping the central opening and an auxiliary light-emitting device overlapping the auxiliary opening,
wherein the color filters of the color filter layer comprising a first color filter overlapping a first opening of the central opening, a second color filter overlapping a second opening of the central opening, and a third color filter overlapping a third opening of the central opening,
wherein the first color filter, the second color filter, and the third color filter overlap each other in the auxiliary opening.
2 . The display device of claim 1 , wherein, in a plan view, the auxiliary opening has a size less than or equal to a size of the central opening.
3 . The display device of claim 1 , wherein:
the pixel unit comprises a first pixel, a second pixel, and a third pixel, the first to third pixels being configured to emit light of different colors than each other;
the central opening comprises the first opening corresponding to the first pixel, the second opening corresponding to the second pixel, and the third opening corresponding to the third pixel;
the auxiliary opening comprises a plurality of auxiliary openings; and
each of the plurality of auxiliary openings is arranged adjacent to at least one of the first opening, the second opening, and the third opening.
4 . The display device of claim 3 , wherein the functional layer comprises a first quantum dot layer filling the first opening, a second quantum dot layer filling the second opening, and a light-transmitting layer filling the third opening.
5 . The display device of claim 4 , wherein:
each of the first quantum dot layer, the second quantum dot layer, and the light-transmitting layer comprises scattering particles;
the first quantum dot layer further comprises a first quantum dot; and
the second quantum dot layer further comprises a second quantum dot.
6 . The display device of claim 1 , wherein a thickness of the color filter layer overlapping the auxiliary opening is greater than 0 μm and less than 10 μm.
7 . The display device of claim 6 , wherein:
the first quantum dot layer is configured to convert light having a wavelength belonging to a first wavelength band into light having a wavelength belonging to a second wavelength band; and
the second quantum dot layer is configured to convert light having a wavelength belonging to the first wavelength band into light having a wavelength belonging to a third wavelength band.
8 . The display device of claim 1 , wherein each of the plurality of light-emitting devices comprises:
a pixel electrode;
an opposite electrode on the pixel electrode; and
a light-emitting layer between the pixel electrode and the opposite electrode.
9 . A display device comprising a pixel unit configured to emit light, the display device comprising:
a lower substrate;
a plurality of light-emitting devices on the lower substrate;
an upper substrate on the lower substrate, the plurality of light-emitting devices being between the upper substrate and the lower substrate;
a bank layer on one surface of the upper substrate facing the lower substrate, the bank layer comprising partition walls defining a central opening corresponding to the pixel unit and an auxiliary opening adjacent to the central opening;
a color filter layer between the upper substrate and the bank layer and overlapping the central opening and the auxiliary opening, the color filter layer comprising a plurality of color filters overlapping each other in a thickness direction;
a functional layer filling the central opening, the functional layer comprising at least one of quantum dots and scattering particles; and
a low refractive index layer between the color filter layer and the functional layer,
wherein the plurality of light-emitting devices comprises a main light-emitting device overlapping the central opening and an auxiliary light-emitting device overlapping the auxiliary opening,
wherein the color filters of the color filter layer comprising a first color filter overlapping a first opening of the central opening, a second color filter overlapping a second opening of the central opening, and a third color filter overlapping a third opening of the central opening,
wherein the first color filter, the second color filter, and the third color filter overlap each other in the auxiliary opening.
10 . The display device of claim 3 , wherein, in a plan view, each of the plurality of auxiliary openings has a size less than or equal to a size of a nearest opening from among the first opening, the second opening, and the third opening.
11 . The display device of claim 1 , wherein the functional layer is not filled in the auxiliary opening.