Light emitting device having spacer for protecting light emission unit from moisture absorbent
A light emitting device is provided. The light emitting device includes a substrate including a non-emission region and an emission region, an emission unit which is located on the subsrate and includes a first electrode, a second electrode and an emission layer interposed between the first and second electrodes, a shield cap adhered to the substrate to encapsulate the emission unit, and an inert liquid or an inert gas in a space between the substrate and the shield cap.
1. A light emitting device comprising:
a substrate comprising an emission region for displaying video data and a non-emission region except the emission region;
an emission unit which is located on the emission region and comprises a first electrode, a second electrode and an emission layer interposed between the first and second electrodes;
a shield cap adhered to the substrate to encapsulate the emission unit;
an inert liquid or an inert gas in a space between the substrate and the shield cap;
a first spacer with the height more than the height of the emission unit, which is located on the substrate; and
a second spacer which is located on an inside surface of the shield cap at a position corresponding to the first spacer.
2. The light emitting device of claim 1 , wherein the inert liquid is a fluorine-based material.
3. The light emitting device of claim 1 , wherein the inert liquid comprises a powder type moisture absorbent.
4. The light emitting device of claim 1 , further comprising a spacer with the height more than the height of the emission unit, which is located on the substrate.
5. The light emitting device of claim 4 , wherein the spacer is located on the non-emission region of the substrate.
6. The light emitting device of claim 5 , further comprising an insulating layer which is located on the first electrode and exposes a part of the first electrode, wherein the spacer is located on the insulating layer of the non-emission region of the substrate.
7. The light emitting device of claim 5 , further comprising an insulating layer which is located on the first electrode and exposes a part of the first electrode, wherein a barrier rib for patterning the second electrode and the spacer are located on the insulating layer of the non-emission region.
8. The light emitting device of claim 7 , wherein the barrier rib and the spacer are simultaneously formed using a halftone mask process.
9. The light emitting device of claim 4 , wherein the spacer is located on the emission region of the substrate.
10. The light emitting device of claim 1 , further comprising a moisture absorbent located on the inside surface of the shield cap.
11. The light emitting device of claim 1 , wherein the emission layer is made of an organic material.
12. A light emitting device comprising:
a substrate comprising an emission region for displaying video data and a non-emission region except the emission region;
an emission unit which is located on the emission region and comprises a first electrode, a second electrode and an emission layer interposed between the first and second electrodes;
a shield cap adhered to the substrate to encapsulate the emission unit;
a first spacer with the height more than the height of the emission unit, which is located on the substrate; and
a second spacer which is located on an inside surface of the shield cap at a position corresponding to the first spacer.
13. The light emitting device of claim 12 , further comprising an inert liquid or an inert gas in a space between the substrate and the shield cap.
14. The light emitting device of claim 12 , further comprising a moisture absorbent which is formed at a position different from a position of the second spacer on the inside surface of the shield cap.
15. The light emitting device of claim 12 , wherein the height of the second spacer is more than the thickness of the moisture absorbent.
16. The light emitting device of claim 12 , further comprising an insulating layer which is located on the first electrode and exposes a part of the first electrode, wherein the spacer is located on the insulating layer of the non-emission region.
17. The light emitting device of claim 12 , wherein the emission layer is made of an organic material.