Manufacturing method for quantum dot polarizer

The invention provides a manufacturing method for a quantum dot polarizer. The manufacturing method for the quantum dot polarizer comprises the steps that a quantum dot layer and a polarizing layer are formed on different substrates to obtain a quantum dot diaphragm and a polarizing diaphragm respectively, and then the quantum dot diaphragm and the polarizing diaphragm are attached to each other to obtain the quantum dot polarizer. Due to the fact that the quantum dot polarizer is not obtained through sequential diaphragm forming on the same substrate, the quantum dot layer in the quantum dot polarizer can be prepared through both a high-temperature procedure and a low-temperature procedure, and the selection and preparation ranges of the quantum dot materials are widened. According to the quantum dot polarizer obtained through the method, the phenomenon of light polarization eliminating cannot occur while the color gamut coverage ratio of a display panel is increased.