Production method of polaroid for STN (Supper Twisted Nematic) LCD

Abstract

The invention relates to a production method of a polaroid for an Supper Twisted Nematic (STN) LCD, which comprises following steps of: 1) cutting a phase difference membrane rolling material into single phase difference membranes with a certain angle theta, sequentially connecting the cut single phase difference membranes along the slow axis direction by using scotch tape, then rolling to be a rolling shape, and continuously compounding the cut single phase difference membranes with a rolling polarizing film reel by reel on a compound machine without stopping so as to compounding a binding agent between a phase difference membrane layer and a polarizing film layer and form a binding agent layer; 2) compounding a peel membrane with the upper surface of the phase difference membranes compounded in the step 1, compounding a pressure sensitive adhesive between a peel membrane layer and the phase difference membrane layer to form a pressure sensitive adhesive layer; and 3) compounding a protective membrane with the lower surface of the polarizing film compounded in the step 2 to obtain the polaroid. The Polaroid can effectively enhance compound accuracy, reduce angular deviation during compounding, can be used without regulating angles again and can enhance production efficiency.

Description

technical field [0001] The invention relates to a production method of a polarizer for an STN type liquid crystal display, which enables the produced product to obtain a specific compensation display effect to meet customer needs. Background technique [0002] STN is Super Twisted Nematic, super twisted nematic. The finished product produced by ordinary STN-type liquid crystal display using polarizer production method is to use a single polarizing film and a single retardation film to compound, so the composite precision of polarizing film and retardation film is low, and the angle deviation is large (deviation range ± 2-3 °), the required display effect cannot be achieved during use, and the angle needs to be adjusted again to meet the requirements, so that it is very inconvenient to use. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problems of low composite precision and large angle deviation of the fi...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the problems of low composite precision and large angle deviation of the finished polarizing film and retardation film produced by the existing STN-type liquid crystal display polarizer production method, and to provide a polarizing film and retardation film Roll-to-roll composite production method, which can effectively improve the composite accuracy and reduce the angle deviation during composite (the deviation can be controlled within ±1° range). The finished polarizer produced by this method can meet customer requirements, and there is no need to adjust the angle again Ready to use and increase productivity

Images