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Method for producing optical component and manufacturing device thereof

A technology of optical components and manufacturing methods, applied in optics, polarizing components, nonlinear optics, etc., can solve the problems of difficult to produce flicker, reduced contrast, uneven color of display screen, etc.

Inactive Publication Date: 2009-04-01
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 thereof
  • Method for producing optical component and manufacturing device thereof
  • Method for producing optical component and manufacturing device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0303] Example 1

[0304] [Manufacture of Vertical Alignment Film]

[0305] The solution of the vertical alignment film (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 on a glass substrate as a base material to produce a coating film, and the glass substrate on which the coating film was formed was fired at 180° C. for 1 hour to obtain a base material for forming a vertical alignment film.

[0307] [Production of coating film for birefringence layer formation]

[0308] The solution of the 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 polyimide-containing solution.

[0309] 20 parts by weight of a compound represented by the above chemical formula (Chemical 11) (where the value of X is 6) as polymerizable liquid c...

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] 0.015ml / cm is added dropwise on the surface of the cross-linked liquid crystal layer 2 The base material of γ-butyrolactone was rotated at a rotational speed of 2000 rpm for 10 sec, whereby γ-butyrolactone was uniformly diffused on the surface of the cross-linked liquid crystal layer. Further, it was dried in this state for 5 min.

[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 was about 1.35 μm. In addition, the film thickness after removing the surface layer was measured with the stylus type level difference meter used in Example 1.

[0347] About the obtained optical element, it carried out similarly to Example 1, and measured retardat...

Embodiment 3

[0350] An 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 apparatus ("LGP-612" manufactured by ラツプマスタ—SFT Corporation) as a polishing apparatus. As the abrasive, PLANERLITE-4000 (manufactured by Fujimi Corporation) was used, and the polishing pad used IC1400 (manufactured by Rodel Corporation).

[0352] By this polishing method, the part from the surface layer to the depth of 1300 angstroms in the base material on which the crosslinked liquid crystal layer was laminated was removed, and the optical element in which the birefringence layer was formed was obtained.

[0353] About the obtained optical element, it carried out similarly to Example 1, and measured retardation, light leakage, and haze.

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

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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 (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 liquid crystal display screen, problems such as light leakage or tone reversal, narrow viewing angle, and uneven color or reduced contrast on the liquid crystal display screen also exist. [0003] In order to solve these problems, a liquid crystal display device provided with an optical element controlling the state of light emitted from or incident on a liquid crystal cell has been proposed. [0004] At this time, as an optical element, in addition to a film material obtained by uniaxially stretching or biaxial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/13363G02B5/30
Inventor 末益淳志
Owner DAI NIPPON PRINTING CO LTD
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