In this thesis, all inorganic halide perovskite quantum dots and light-emitter diodes are used to verify excitation wavelength, encapsulate difference, concentration ratio and the addition of high scattering material Zirconium dioxide in order to optimize the inorganic perovskite quantum dots hybrid light-emitter diode. The quantum dots were coated in silicon dioxide by hydrolysis method to separate the contact between external moisture and oxygen to cause self-aggregation or degradation of quantum dots. We use perovskite quantum dots coated in silica encapsulated on light-emitter diode with polydimethylsiloxane(PDMS). Pumping the quantum dots with higher energy photon from LED chips. Continuously long-term lighting the PQD analysis the change of spectrum and the reliability of the devices is tested by multiple conditions.