Layered structures and electronic devices including the same

A display device comprising a light source comprising a plurality of light units;

• and a photoluminescent color filter layer disposed on the light source and comprising a layered structure,
• wherein the layered structure comprises:
• a photoluminescent layer comprising a quantum dot polymer composite;
• a light absorption layer disposed on the photoluminescent layer, the light absorption layer comprising an absorptive color-filter material;
• and
• a silicon containing layer disposed between the photoluminescent layer and the light absorption layer,
• wherein the quantum dot polymer composite comprises a first polymer matrix and a plurality of quantum dots dispersed in the first polymer matrix,
• wherein the layered structure comprises a first section emitting first light and a second section emitting second light different from the first light,
• wherein the plurality of light units comprises a first light unit corresponding to the first section and supplying excitation light to the first section and a second light unit corresponding to the second section and supplying excitation light to the second section,
• wherein in the layered structure, the quantum dot polymer composite is patterned to correspond to the first section and the second section, respectively,
• the silicon containing layer is patterned to correspond to the first section and the second section,
• wherein the light absorption layer is patterned to have a first absorption section and a second absorption section corresponding to the first section and the second section, respectively, wherein the first absorption section is spaced apart from the second absorption section;
• and
• wherein a thickness of the silicon containing layer is greater than or equal to 100 nanometers and less than or equal to 3 micrometers.