The invention provides a
quantum dot
diffusion plate production method. The
quantum dot
diffusion plate production method comprises following steps: a step 1 of preparing a
raw material; a step 2 of making optical master batches: uniformly stirring and mixing a selected mixture of the
raw material and pulvis to form the optical master batches; a step 3 of carrying out an
extrusion molding process, i.e., uniformly stirring the selected mixture of the
raw material, the optical master batches, the
quantum dot, GPPS and putting the mixture into an
extrusion molding machine, and molding the
quantum dot diffusion plate material; and a step 4 of carrying out cooling and
cutting processes, i.e., after the
extrusion molding step, cooling the
quantum dot diffusion plate material through an extrusion line, and
cutting the
quantum dot diffusion plate material into a quantum dot diffusion plate finished product which adapts to a backlight module in size. According to the invention, quantum dots are fused in the quantum dot diffusion plate extrusion molding process, a
white light excitation layer is excited by
blue light to generate
white light which traverses an inactive region of the quantum dot diffusion plate,
white light is emitted from a light emitting surface of the quantum dot diffusion plate, the
color difference between the above two kinds of white light is small, the
color difference problem of the visible area can be effectively solved, and the color domain uniformity of the backlight module is high.