Wide polarizing plate and manufacturing method thereof

Abstract

The present invention provides a wide polarizer suitable for the 100 inch liquid crystal display panel and a manufacturing method thereof. A polyvinyl alcohol film uncoiled from a coil is done with an extension treatment extending along the coil width direction and contracting along the coiling direction, and a cellulose triacetate film is used to do laminate process on the two surfaces of the polyvinyl alcohol film after the extension treatment so as to manufacture the wide polarizer.

Description

technical field [0001] The invention relates to a polarizing plate using polyvinyl alcohol (PVA) and a manufacturing method thereof, in particular to a wide-width polarizing plate applicable to a 100-inch liquid crystal display panel and a manufacturing method thereof. Background technique [0002] In recent years, in TV broadcast image receivers corresponding to high-definition television broadcasts, the size of the screen has increased, and image receivers equipped with 100-inch class liquid crystal display panels have appeared. [0003] The liquid crystal display panel has a structure in which the following parts are sequentially laminated from the back to the front: a backlight emitting white light; a first polarizing plate that converts the white light emitted by the backlight into polarized light in a first direction (for example, vertical); a transparent electrode; a liquid crystal; a second transparent electrode; and a second polarizing plate that only transmits pola...

AI Technical Summary

Problems solved by technology

[0016] However, since the backlight light cannot be prevented from leaking from the seams of the vertical polarizers, there is a problem that thin white lines are generated in the vertical direction in the 100-inch class liquid crystal display panel, causing deterioration in image quality.

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