Grinding treatment method, grinding treatment device, and method and device for manufacturing optical compensation films
An optical compensation film, rubbing treatment technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of uneven orientation of the orientation film of the orientation layer, uneven orientation of the fluff, and inability to fully remove dust, etc. The effect of reducing the amount of adhering dust, suppressing local deterioration, and prolonging the service life
Active Publication Date: 2015-04-08
FUJIFILM CORP
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Problems solved by technology
[0009] However, the methods described in Patent Documents 2 to 4 remove dust from the rubbing cloth without contacting the fluff of the rubbing cloth, and cannot sufficiently remove dust.
In addition, when dust is removed by contact with a rubbing cloth, the directionality of the fluff is not uniform, and the directionality of the orientation film of the orientation layer is not uniform.
Method used
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Embodiment 1
[0087] (Formation of a long flexible ribbon with an alignment film forming material layer)
[0088] Long-chain alkyl-modified polyvinyl alcohol (MP-203, manufactured by KURARAY Co., Ltd.) was coated on one side of a strip-shaped film of cellulose triacetate (FUJITAC, manufactured by Fujifilm Co., Ltd., thickness: 100 μm, width: 500 mm). ) 5% by weight aqueous solution, dried at 90° C. for 4 minutes. In this way, an alignment film forming material layer having a thickness of 2.0 μm was formed.
[0089] (Rubbing treatment of alignment film forming material layer)
[0090] use figure 1 A rubbing treatment was performed on the surface of the alignment film forming material layer of the elongated flexible film provided with the alignment film forming material layer. The transparent film provided with the material layer for forming an alignment film was continuously conveyed in the direction of the arrow at 20 m / min. The transparent film is conveyed while being pressed from abov...
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Abstract
The present invention provides a grinding treatment method, a grinding treatment device, and a method and a device for manufacturing optical compensation films, through which dusts generated in grinding treatment can be removed effectively and productivity can be improved with prolonged service lifetime of a grinding roller. The grinding treatment device comprises the grinding roller (16) pasted with grinding cloth (28) on the circumferential surface, a roller-shaped brush (26) for removing dusts on the grinding cloth (28) and dust exhausting device for exhausting dusts removed from the grinding cloth (28).
Description
technical field [0001] The present invention mainly relates to a rubbing treatment method and a rubbing treatment apparatus, and particularly relates to a method of removing dust generated when an alignment film is rubbed in a manufacturing process of an optical compensation film and a method of adjusting a rubbing cloth. Background technique [0002] As a method for improving the viewing angle of twisted nematic liquid crystal displays (TN-LCDs) widely used in liquid crystal display devices, there is known a method of forming an optical compensation film in which a liquid crystal discotic compound layer is formed on an alignment film of a transparent film. The alignment film at this time is obtained by forming an alignment film forming material layer on a transparent film and rubbing the alignment film forming material layer. [0003] The rubbing treatment is performed by rotating a rubbing roller in a direction opposite to the direction of movement of the alignment film fo...
Claims
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IPC IPC(8): G02F1/1337G02F1/13363G02B5/30B29C67/00
Inventor 村上大伊藤秀知
Owner FUJIFILM CORP