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

A liquid crystal display and production method technology, applied in optics, instruments, polarizing elements, etc., can solve the problems of low composite precision and large angular deviation of polarizing film and phase difference film, and achieve the purpose of reducing angular deviation, improving composite precision, and improving production. The effect of efficiency

Active Publication Date: 2010-09-29
SHENZHEN SUNNYPOL OPTOELECTRONICS
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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-

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

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Embodiment Construction

[0019] Definitions of terms and symbols in the specification of the present invention are described below.

[0020] (1) The symbol "nx" refers to the refractive index in the direction that provides the maximum in-plane refractive index (ie, the direction of the slow axis), and the symbol "ny" refers to the direction perpendicular to the slow axis (ie, the fast axis) in the same plane. direction) in the refractive index. The symbol "nz" refers to the refractive index in the thickness direction. Moreover, for example, the expression "nx=ny" not only refers to the case where nx and ny are completely equal, but also includes the case where nx and ny are substantially equal. In the description of the present invention, the phrase "substantially equal" includes the case where nx and ny are not equal in a range that does not affect the overall polarization performance of a polarizer equipped with a retardation film in practical applications.

[0021] (2) The term "in-plane retardat...

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Abstract

The invention relates to a production method of a polaroid for an STN (Supper Twisted Nematic) 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 according to the technological requirements, 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 control the counterpoint accuracy of the polarizing film and the phase difference membranes by a positioning controller on the platform of the compound machine during compounding reel by reel; 2. compounding a peel membrane with the upper surface of the phase difference membranes compounded in the step 1; 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...

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Application Information

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IPC IPC(8): G02F1/13363G02B5/30
Inventor 张建军黄志华
Owner SHENZHEN SUNNYPOL OPTOELECTRONICS
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