Display apparatus
The present disclosure is directed to a display apparatus having a high resolution with improved light efficiency. In one aspect, such display apparatus includes a substrate, a light emitting element formed on the substrate and configured to emit light of different colors via a plurality of sub-pixels, and a partial color filter layer formed on a first subset of the plurality of sub-pixels configured to output at least two of the different colors.
1 . A display apparatus, comprising:
a substrate;
a light emitting element formed on the substrate and configured to emit light of different colors via a plurality of sub-pixels;
a partial color filter layer formed on a first subset of the plurality of sub-pixels configured to output at least two of the different colors;
an air layer over a second subset of the plurality of sub-pixels over which the partial color filter layer is not formed, the second subset of the plurality of sub-pixels configured to output one of the different colors;
a first reflective electrode corresponding to the second subset of the plurality of sub-pixels; and
a second reflective electrode corresponding to the first subset of the plurality of sub-pixels,
wherein the first reflective electrode is at a first distance from the partial color filter layer, and
wherein the second reflective electrode is at a second distance from the partial color filter layer, and the second distance is less than the first distance.
2 . The display apparatus of claim 1 , wherein the air layer has a different refractive index than a color filter of the partial color filter layer.
3 . The display apparatus of claim 1 , wherein
the different colors include red, green, and blue colors,
each of the plurality of sub-pixels correspond to one of the red, green, and blue colors,
the first subset of the plurality of sub-pixels includes sub-pixels corresponding to two of the red, green, and blue colors, and
the second subset of the plurality of sub-pixels includes sub-pixels corresponding to a remaining one of the red, green, and blue colors.
4 . The display apparatus of claim 1 , wherein the light emitting element comprises:
a plurality of first electrodes, each of the plurality of first electrodes corresponding to one of the plurality of sub-pixels;
a light emitting layer formed over an entire surface of the substrate to cover the plurality of first electrodes; and
a second electrode formed over the light emitting layer.
5 . The display apparatus of claim 4 , further comprising:
a passivation layer;
an insulating layer formed over the passivation layer;
the first reflective electrode formed on the passivation layer corresponding to the second subset of the plurality of sub-pixels; and
the second reflective electrode formed on the insulating layer corresponding to the first subset of the plurality of sub-pixels.
6 . The display apparatus of claim 5 , wherein an optical distance between the first reflective electrode and the second electrode is adjusted to cause constructive interference for light reflected between the first reflective electrode and the second electrode within a wavelength band of a color to be emitted from the second subset of the plurality of sub-pixels.
7 . The display apparatus of claim 6 , wherein the optical distance, when adjusted, causes destructive interference for all other lights within wavelength bands of colors other than the color.
8 . The display apparatus of claim 4 , further comprising:
a first insulating layer;
a passivation layer formed on the first insulating layer;
a second insulating layer formed on the passivation layer;
a first reflective electrode formed on the first insulating layer corresponding to the second subset of the plurality of sub-pixels; and
a second reflective electrode formed on the second insulating layer corresponding to the first subset of the plurality of sub-pixels.
9 . The display apparatus of claim 4 , wherein the first reflective electrode is at a third distance from the second electrode,
wherein the second reflective electrode is at a fourth distance from the second electrode, and the fourth distance is less than the third distance.
10 . The display apparatus of claim 1 , further comprising:
an encapsulation layer configured to prevent moisture from penetrating into the light emitting element.
11 . The display apparatus of claim 1 , further comprising:
a plurality of transistors, each of the plurality of transistors having an active region inside the substrate.
12 . A display apparatus for displaying multimedia representing virtual and augmented reality, the display apparatus comprising:
a substrate;
a light emitting element formed on the substrate and configured to emit light of different colors via a plurality of sub-pixels to display the multimedia on the display apparatus; and
a color filter layer over the light emitting element and including color filters corresponding to a first subset of the plurality of sub-pixels and an air layer corresponding to a second subset of the plurality of sub-pixels; and
a plurality of reflective electrodes, wherein at least one of the plurality of reflective electrodes corresponding to the second subset of the plurality of sub-pixels is at a first distance from the color filter layer and remaining ones of the plurality of reflective electrodes corresponding to the first subset of the plurality of sub-pixels are at a second distance from the color filter layer, and wherein the second distance is less than the first distance.
13 . The display apparatus of claim 12 , further comprising:
a plurality of transistors, wherein each of the plurality of transistors form an active region inside the substrate.
14 . The display apparatus of claim 12 , wherein the color filter layer comprises:
a first color filter and a second color filter corresponding to the first subset of the plurality of sub-pixels.
15 . The display apparatus of claim 14 , wherein the air layer has a different refractive index than the first color filter and the second color filter.
16 . The display apparatus of claim 12 , wherein
the different colors include red, green, and blue colors,
each of the plurality of sub-pixels corresponds to one of the red, green, and blue colors,
the first subset of the plurality of sub-pixels includes sub-pixels corresponding to two of the red, green, and blue colors, and
the second subset of the plurality of sub-pixels includes sub-pixels corresponding to a remaining one of the red, green, and blue colors.
17 . The display apparatus of claim 12 , wherein the light emitting element comprises:
a plurality of first electrodes, each of the plurality of first electrodes corresponding to one of the plurality of sub-pixels;
a light emitting layer formed over an entire surface of the substrate to cover the plurality of first electrodes; and
a second electrode formed over the light emitting layer.
18 . The display apparatus of claim 17 , wherein the plurality of reflective electrodes comprise:
at least two second reflective electrodes corresponding to the first subset of the plurality of sub-pixels; and
a first reflective electrode corresponding to the second subset of the plurality of sub-pixels.
19 . The display apparatus of claim 18 , wherein an optical distance between the first reflective electrode and the second electrode is adjusted to cause constructive interference for light reflected between the first reflective electrode and the second electrode within a wavelength band of a color to be emitted from the second subset of the plurality of sub-pixels.
20 . The display apparatus of claim 18 , wherein the first reflective electrode is at a third distance from the second electrode,
wherein the at least two second reflective electrodes are at a fourth distance from the second electrode, and the fourth distance is less than the third distance.