Organic light emitting diode device
View Patent ↗Disclosed is an organic light emitting diode device including a substrate, an organic light emitting element disposed on the substrate, a polymer resin layer covering the organic light emitting element, and a getter disposed between the organic light emitting element and the polymer resin. The getter may include a moisture absorbing material and a binder having a volatilization degree of about 400 ppm or less when heated at a temperature ranging from about 60° C. to about 120° C. for about 2 hours.
1. An organic light emitting diode device, comprising:
a substrate;
an organic light emitting element disposed on the substrate;
a polymer resin layer covering the organic light emitting element; and
a getter disposed between the organic light emitting element and the polymer resin layer, wherein the getter continuously covers and is in contact with the whole of the upper and side surfaces of the organic light emitting device,
the getter comprised of:
a moisture absorbing material; and
a binder that has been heated at a temperature ranging from about 60° C. to about 120° C. for about 2 hours at atmospheric pressure before incorporation into the OLED device, wherein the binder comprises a silicone resin, an epoxy resin, or a combination thereof,
wherein the polymer resin layer continuously covers and is in contact with the whole of the upper and side surfaces of the getter.
2. The organic light emitting diode device of claim 1 , wherein the polymer resin layer comprises an epoxy resin.
3. The organic light emitting diode device of claim 1 , wherein the polymer resin layer covers the whole surface of the upper and the side of the organic light emitting element.
4. The organic light emitting diode device of claim 1 , wherein the moisture absorbing material has a particle size ranging from about 10 nm to about 500 nm.
5. The organic light emitting diode device of claim 4 , wherein the moisture absorbing material has an average particle size ranging from about 150 nm to about 250 nm.
6. The organic light emitting diode device of claim 1 , wherein the moisture absorbing material comprises one or more of aluminum (Al), magnesium (Mg), manganese (Mn), iron (Fe), calcium (Ca), barium (Ba), or strontium (Sr), or oxides thereof.
7. The organic light emitting diode device of claim 1 , wherein the moisture absorbing material and the binder are each included in an amount of about 20 wt % to about 80 wt % based on the total entire amount of the getter composition.
8. The organic light emitting diode device of claim 7 , wherein the moisture absorbing material and the binder are included in an amount of about 30 to about 50 wt % and about 50 to about 70 wt % respectively based on the total amount of the getter composition.
9. The organic light emitting diode device of claim 1 , wherein the getter is formed from a liquid getter composition.