The invention provides a filter membrane of a
plasma display panel and a preparation method of the filter membrane and relates to a filter membrane technique for improving a contrast of a display. The filter membrane solves problems that such traditional filter membrane has the disadvantages of many membrane
layers, low
transmittance of visible lights, complex
processing, low efficiency and high cost. The filter membrane comprises a substrate, wherein an anti-reflective
membrane layer or a hardening
membrane layer is arranged on one side of the substrate; the substrate is provided with stripe-patterned grooves, in which black fillers are arranged; Color-PSA
adhesive membrane
layers are arranged outside the grooves; the preparation method of the filter membrane comprises the following steps of: manufacturing the anti-reflective
membrane layer or the hardening membrane layer on one side of the substrate, manufacturing stripe-patterned grooves and black fillers on one side of the substrate and manufacturing the Color-PSA
adhesive membrane
layers outside the grooves. The filter membrane provided by the invention has the advantages of less membrane layers, light weight, capability of
high transmittance and light-room contrast, low cost, simple preparation method, high qualified rate of filter membranes and high production efficiency. The filter membrane provided by the invention is mainly applied to
plasma display panels.