Display device including a capping layer

A display device comprising:

• a light emitting element layer disposed on a substrate;
• a wavelength conversion layer disposed on the light emitting element layer, the wavelength conversion layer comprises wavelength shifters configured to convert a peak wavelength of incident light to a second wavelength different from the peak wavelength;
• and
• a first capping layer disposed on the wavelength conversion layer, wherein
• the first capping layer includes polysilazane represented by Chemical Formula 1:
• R1 and R2 are each independently any one selected from H, O, N, alkyl, epoxy, and acrylate,
• R3 and R4 are each independently a C5 to C10 alkyl chain or an acrylate reactive group,
• R5 is any one selected from alkyl, methoxy, and carbon double bond,
• x, y, and z are each an integer selected from a range of 1 to 10, and
• a sum of x and z is less than or equal to y.

An electronic device comprising:

• a transistor layer disposed on a substrate;
• a light emitting element layer disposed on the transistor layer;
• a wavelength conversion layer disposed on the light emitting element layer, the wavelength conversion layer comprises wavelength shifters configured to convert a peak wavelength of incident light to a second wavelength different from the peak wavelength;
• and
• a first capping layer disposed on the wavelength conversion layer, wherein
• the first capping layer includes:
• a base;
• and
• pores in the base, and
• the base includes polysilazane, the polysilazane including siloxane.