Encapsulated organic electroluminescent display

An organic electroluminescent display, comprising:

• a substrate;
• an organic light-emitting unit comprising a first electrode, an organic layer, and a second electrode sequentially stacked on a surface of the substrate;
• an encapsulation cover comprising sodalime glass and arranged over the substrate and over the organic light emitting unit;
• a buffer layer arranged on at least some portions of the encapsulation cover that face the substrate;
• a sealant arranged on the buffer layer and adapted to bond the buffer layer and the encapsulation cover to the substrate and to seal a space between the substrate and the encapsulation cover containing the buffer layer from an outside;
• and
• an absorbent material disposed on an inside of the encapsulation cover and adapted to absorb moisture in the space, the buffer layer being arranged between the sealant and the encapsulation cover, the buffer layer being adapted to prevent sodium ions from migrating from the encapsulation cover to the sealant, the encapsulation cover not being in direct contact with the sealant, the buffer layer having a thickness that is less than that of the sealant.

An organic electroluminescent display, comprising:

• a substrate;
• an organic light-emitting unit comprising a first electrode, an organic layer, and a second electrode sequentially stacked on a surface of the substrate;
• an encapsulation cover comprising sodalime glass and arranged over the substrate and over the organic light emitting unit;
• a buffer layer arranged on at least some portions of the encapsulation cover that face the substrate;
• a sealant arranged on the buffer layer and adapted to bond the buffer layer and the encapsulation cover to the substrate and to seal a space between the substrate and the encapsulation cover containing the buffer layer from an outside;
• and
• an absorbent material disposed on an inside of the encapsulation cover and adapted to absorb moisture in the space, the buffer layer being arranged between the sealant and the encapsulation cover, the buffer layer being adapted to prevent sodium ions from migrating from the encapsulation cover to the sealant, the encapsulation cover not being in direct contact with the sealant, the encapsulation cover comprising a roof portion and a plurality of sidewall portions extending perpendicular from the roof portion and towards the substrate, the plurality of sidewall portions being integral with the roof portion, the buffer layer being arranged only on portions of the plurality of sidewall portions that face the substrate.