Layered structures, production methods thereof, and liquid crystal display including the same

A layered structure comprising:

• a luminescent layer comprising a quantum dot polymer composite pattern;
• an inorganic layer with a thickness of about 600 nanometers to 10 micrometers disposed on the luminescent layer, the inorganic layer comprising alternate layers of a first inorganic material and a second inorganic material directly in contact with the alternating first inorganic material;
• an organic layer directly disposed on the luminescent layer and having a thickness of less than or equal to about 40 nm, the organic layer comprising an organic polymer, wherein the inorganic layer is directly disposed on the organic layer;
• and
• a transparent substrate disposed on a surface of the luminescent layer opposite the inorganic layer;
• wherein the quantum dot polymer composite pattern comprises a repeating section comprising a polymer matrix and a plurality of quantum dots in the polymer matrix, and the repeating section comprises a first section configured to emit a first light, wherein the inorganic material is disposed on at least a portion of a surface of the repeating section,
• wherein the quantum dot polymer composite pattern of the luminescent layer absorbs light passing through the inorganic layer, and
• wherein the layered structure maintains a post photoconversion efficiency of greater that or equal to about 90% following a heat treatment of 180° C. for 30 minutes and a heat treatment of 230° C. for 30 minutes, relative to an initial photoconversion efficiency prior to the two heat treatments.