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Method for producing optical component and manufacturing device

A technology of optical components and manufacturing methods, applied in optics, polarizing components, nonlinear optics, etc., can solve problems such as difficult to produce flicker, narrow viewing angle, and reduced contrast.

Inactive Publication Date: 2006-11-01
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Liquid crystal display devices (LCD) are used in various fields such as televisions and medical equipment due to their advantages of easy thinning and weight reduction, low power consumption, and low flickering. Due to the different viewing angles of the LCD screen, light leakage or tone reversal phenomenon, narrow viewing angle, and uneven color or reduced contrast on the LCD screen may also exist.

Method used

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  • Method for producing optical component and manufacturing device
  • Method for producing optical component and manufacturing device
  • Method for producing optical component and manufacturing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0304] [Manufacturing of Vertical Alignment Film]

[0305] The vertical alignment film solution (manufactured by JSR Corporation, JALS-2021-R2) was diluted twice with γ-butyrolactone to prepare a film composition solution.

[0306] This film composition liquid was applied to a glass substrate as a base material to produce a coating film, and the glass substrate on which the coating film was formed was sintered at 180° C. for 1 hour to obtain a vertical alignment film forming base material.

[0307] [Production of coating film for forming birefringent layer]

[0308] A solution of a vertical alignment film (manufactured by JSR Corporation, JALS-2021-R2) was diluted 8 times with diethylene glycol dimethyl ether to prepare a solution, and the solution was used as a solution containing polyimide.

[0309] 20 parts by weight of the compound represented by the above chemical formula (Chemical Formula 11) as polymerizable liquid crystal molecules (polymerizable liquid crystals) showing a...

Embodiment 2

[0343] An optical element was obtained in the same manner as in Example 1, except that the surface layer was removed by spin coating.

[0344] Spin coating is performed as described below.

[0345] Make 0.015ml / cm drop on the surface of the crosslinked liquid crystal layer 2 The base material of γ-butyrolactone is rotated at 2000 rpm for 10 sec. According to this, γ-butyrolactone is uniformly diffused on the surface of the cross-linked liquid crystal layer. Further, it was dried for 5 minutes in this state.

[0346]For the optical element obtained by spin coating, the film thickness of the crosslinked liquid crystal layer laminated on the surface of the substrate was measured. The film thickness is about 1.35 μm. In addition, the thickness of the film after removing the surface layer was measured by the stylus type level difference meter used in Example 1.

[0347] With respect to the obtained optical element, the retardation, light leakage, and haze were measured in the same mann...

Embodiment 3

[0350] The optical element was obtained in the same manner as in Example 1, except that the surface layer was removed by polishing.

[0351] The removal of the surface layer was performed using a chemical mechanical polishing device (“LGP-612” manufactured by Lapmapstar-SFT Co., Ltd.) as a polishing device. The abrasive used PLANERLITE-4000 (manufactured by Fujimi), and the polishing pad used ICl400 (manufactured by Rodel).

[0352] By this polishing method, the portion from the surface layer to a depth of 1300 angstroms from the surface layer of the substrate on which the crosslinked liquid crystal layer is laminated is removed, thereby obtaining an optical element with a birefringent layer formed.

[0353] With respect to the obtained optical element, the retardation, light leakage, and haze were measured in the same manner as in Example 1.

[0354] In this optical element, the retardation in the thickness direction of the birefringent layer was approximately 0 nm, and the retar...

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Abstract

The present invention provides a method of producing an optical element the haze of which is efficiently reduced and an apparatus for producing the optical element. An optical element which includes a base material having light transmittance and a functional layer containing a functional substance and laminated on the surface of the base material, in which the state of light passing through the functional layer is changed in accordance with the functional substance, and the haze of which is efficiently reduced is provided by means of a method of producing the optical element including: a coating step of coating the surface of the base material with a functional layer composition liquid containing the functional substance to form a coating film; a baking step of baking the base material having the coating film formed on its surface to form the functional layer in which a functional layer-covering layer is formed to cover the functional layer and a light diffusion layer for diffusing light that has passed through the functional layer is formed in a direction from the surface layer of the functional layer-covering layer toward an interface between the functional layer-covering layer and the functional layer; and a covering layer removing step of removing at least the light diffusion layer out of the functional layer-covering layer to be formed in the baking step.

Description

Technical field [0001] The present invention relates to a manufacturing method and manufacturing apparatus of an optical element in which a functional layer is laminated on a substrate. Background technique [0002] Liquid crystal display devices (LCDs) are used in various fields such as televisions and medical equipment because they are easy to thin and lighten, can reduce power consumption, and are difficult to generate flicker. However, on the other hand, they are not only troublesome for users. The problem of light leakage or tone reversal phenomenon, narrow viewing angle due to different viewing angles of the liquid crystal display screen, and problems such as color unevenness or reduced contrast on the liquid crystal display screen. [0003] In order to solve these problems, a liquid crystal display device provided with an optical element that controls the state of light emitted from a liquid crystal cell or light incident on the liquid crystal cell has been proposed. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02B5/30
Inventor 末益淳志
Owner DAI NIPPON PRINTING CO LTD
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