Filter membrane of plasma display panel capable of improving light-room contrast and preparation method of filter membrane

Abstract

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.

Description

technical field [0001] The invention relates to a filter film technology, in particular to a filter film which can be used to improve the contrast ratio of a plasma display (PDP) in a bright room and a preparation method thereof. Background technique [0002] Plasma display (PDP) display technology is to discharge the working gas such as neon gas and xenon gas inside the display by applying voltage, so as to emit ultraviolet light of a specific band, and use the ultraviolet light of this specific band to excite the phosphor layer to emit red and green. , Blue three primary color light display technology. However, in the process of the PDP display emitting light, in addition to the visible light of the three primary colors of red, green and blue, it will also produce near-infrared rays that seriously interfere with the TV remote control and shutter 3D glasses; secondly, the neon gas inside the PDP display is discharged in the PDP. Yellow light will be produced during the pro...

AI Technical Summary

Problems solved by technology

[0005] Since this kind of CRF filter film has a structure of double-layer transparent polymer resin substrates A1, B1 and double-layer adhesive film layers A2, B3, more transparent polymer resin substrates and pressure-sensitive adhesives are used. There are many processes, the process route is long, the processing efficiency is low, and the cost is high, and the increase of the overall visible light transmittance of the filter film is limited due to the overall thickness of the film layer.

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