Display apparatus having improved light emitting efficiency
A display apparatus includes: a substrate including a plurality of sub-pixels; an organic light emitting element formed in each of the plurality of sub-pixels; a light control member including a light control pattern disposed in each of the plurality of sub-pixels, and an air layer between adjacent light control patterns; and a color filter layer disposed on the light control member.
1 . A display apparatus, comprising:
a substrate including a plurality of sub-pixels;
an organic light emitting element formed in each of the plurality of sub-pixels;
a light control member including a light control pattern disposed in each of the plurality of sub-pixels, and an air layer between adjacent light control patterns;
a color filter layer disposed on the light control member; and
a support member provided between the light control pattern and the color filter layer,
wherein the support member is spaced apart from a support member of an adjacent sub-pixel by a predetermined distance, and is coupled by at least one connecting member.
2 . The display apparatus of claim 1 , wherein the substrate is formed of a semiconductor wafer.
3 . The display apparatus of claim 2 , further comprising a transistor formed in each of the plurality of sub-pixels, wherein the transistor includes:
an active region formed inside the semiconductor wafer;
a gate insulating layer formed on the semiconductor wafer;
a gate electrode formed on the gate insulating layer;
an inter-layered insulating layer formed on the gate electrode; and
a source electrode and a drain electrode formed on the inter-layered insulating layer.
4 . The display apparatus of claim 1 , wherein the light control pattern has a trapezoidal shape or a circumferential shape.
5 . The display apparatus of claim 1 , wherein the color filter layer includes R, G, and B color filters, and
wherein each of the R, G, and B color filters is spaced apart from a color filter of an adjacent sub-pixel by a predetermined distance.
6 . The display apparatus of claim 5 , wherein another air layer is formed between adjacent color filters.
7 . The display apparatus of claim 1 , wherein a planarization layer is disposed between the support member and the color filter layer.
8 . The display apparatus of claim 1 , wherein the organic light emitting element includes:
a first electrode;
an organic light emitting layer on the first electrode; and
a second electrode on the organic light emitting layer.
9 . The display apparatus of claim 8 , wherein the organic light emitting layer emits a white light.
10 . The display apparatus of claim 8 , further comprising a trench formed in at least a passivation layer and between adjacent sub-pixels to disconnect the organic light emitting layer.
11 . The display apparatus of claim 8 , further comprising a reflective member formed in the sub-pixel to resonate a light emitted from the organic light emitting layer.
12 . The display apparatus of claim 8 , further comprising a reflective layer disposed on a side surface of the organic light emitting layer to reflect a light emitted from the organic light emitting layer.
13 . The display apparatus of claim 12 , wherein a bank layer is formed between the adjacent sub-pixels, and
wherein the reflective layer is formed on at least a side surface of the back layer.
14 . The display apparatus of claim 1 , further comprising an encapsulation layer disposed on the organic light emitting element.
15 . The display apparatus of claim 14 , wherein the encapsulation layer includes:
a first encapsulation layer made of an inorganic material;
a second encapsulation layer made of an organic material and formed on the first encapsulation layer; and
a third encapsulation layer made of an inorganic material and formed on the second encapsulation layer.
16 . A display apparatus, comprising:
a substrate including a plurality of sub-pixels;
an organic light emitting element formed in each of the plurality of sub-pixels;
an encapsulation layer disposed on the organic light emitting element; and
a color filter layer disposed on the encapsulation layer,
wherein the encapsulation layer includes a first encapsulation layer formed entirely over the substrate, a second encapsulation layer formed in a pyramid or lens shape on the first encapsulation layer, and a third encapsulation layer disposed on the second encapsulation layer,
wherein an air layer is formed between adjacent second encapsulation layers such that a light emitted from the organic light emitting element is reflected at an interface between the second encapsulation layer and the air layer,
wherein the color filter layer includes R, G and B color filters, and
wherein another air layer is formed between adjacent color filters of the R, G and B color filters.
17 . The display apparatus of claim 4 , wherein a light incident to a boundary of the light control pattern is reflected based on a difference in a refractive index between the light control pattern and an adjacent material.
18 . The display apparatus of claim 1 , wherein a portion of a bottom surface of the support member overhangs a top surface of the light control pattern.