Display device having a phosphor including a quantum dot and manufacturing method thereof

A display device comprising:

• a display substrate;
• a light amount control layer on the display substrate;
• a first polarizer on the light amount control layer;
• and
• a color conversion layer on the first polarizer,
• wherein the color conversion layer comprises a resin comprising a phosphor and a reflective element,
• the phosphor comprises a quantum dot, the quantum dot comprising:
• a core;
• a first shell surrounding the core;
• and a second shell surrounding the first shell, wherein the first shell comprises at least one of:
• InP, CdSe, ZnSe, and ZnTe, and
• the quantum dot has a diameter ranging from about 2 nm to about 32 nm,
• wherein the first shell has a thickness ranging from about 0.2 nm to about 2.5 nm, and
• wherein the second shell has a thickness ranging from about 3 nm to about 5 nm.