Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method of optical film

A manufacturing method and optical film technology, applied in optics, optical components, instruments, etc., can solve problems such as poor productivity

Active Publication Date: 2018-02-09
KONICA MINOLTA INC
View PDF27 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the transmission axis of the polarizer and the slow axis of the stretched film are tilted at a desired angle as described above, it is necessary to cut out a long polarizing film and / or stretched film at a specific angle and cut the film sheet Batch production in which one piece is bonded to each other reduces productivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of optical film
  • Manufacturing method of optical film
  • Manufacturing method of optical film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0161] These compounds may be added together with the cellulose ester or the solvent during preparation of the cellulose ester solution, or may be added during or after the preparation of the solution.

[0162] (delay modifier)

[0163] As the compound added for retardation adjustment, an aromatic compound having two or more aromatic rings described in European Patent No. 911,656A2 can be used.

[0164] In addition, two or more aromatic compounds may be used in combination. Among the aromatic rings of the aromatic compound, it is particularly preferable to contain an aromatic heterocyclic ring in addition to the aromatic hydrocarbon ring. An aromatic heterocycle is usually an unsaturated heterocycle. Among them, a 1,3,5-triazine ring is particularly preferable.

[0165] (polymer or oligomer)

[0166] The cellulose ester film in this embodiment preferably contains cellulose ester and a vinyl group having a substituent selected from a carboxyl group, a hydroxyl group, an ami...

Embodiment 1

[0376] The elongated oblique orientation film A' made of the COP film is wound up by the film winding part 9 Figure 4The shown film cutting device 8 (cutting member 8a) moves in the width direction and cuts to a predetermined length. At this time, the elongated obliquely oriented film A' was cut with a tension of 5 N per unit length in the width direction applied along the longitudinal direction to the elongated obliquely oriented film A'. In addition, in the cutting of the elongated oblique alignment film A', the tension applied in the longitudinal direction was set to be constant (5 N / m), and the blade of the cutting member 8a moved earlier than the lower surface of the elongated oblique alignment film A'. into the upper surface.

[0377] (Manufacture of circular polarizer)

[0378] Next, a polyethylene film with a thickness of 120 μm was uniaxially stretched (at a temperature of 110° C. and a stretching ratio of 5 times), immersed in an aqueous solution composed of 0.075...

Embodiment 2

[0380] In Example 2, when the elongated oblique alignment film A' was cut along the width direction, the tension applied to the length direction was set to be 30 N per unit length in the width direction, and the tension was set to be constant during cutting (30 N / m). Other than that, it is the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The direction of orientation for a long inclined oriented film is inclined relative to the longitudinal direction and the direction of width. Let S1(m) be the length in the direction of width of a film (F) that includes the long inclined oriented film, and let Q(N) be the tension applied in the longitudinal direction to the film (F). In a state in which tension (Q) is applied to the film such that Q / S1 is 5 - 100 N / m, the film (F) is severed in the direction of width by a severing member (8a).

Description

technical field [0001] This invention relates to the optical film manufacturing method which cuts the elongated optical film which consists of elongated oblique alignment film, and manufactures each optical film. Background technique [0002] Currently, self-luminous display devices such as organic EL (electroluminescence) display devices are attracting attention. In an organic EL display device, a reflector such as an aluminum plate is provided on the rear side of the display in order to improve light extraction efficiency. Therefore, external light incident on the display is reflected by the reflector, resulting in a decrease in image contrast. [0003] Therefore, in order to prevent reflection of external light and improve the contrast between light and dark, there is known a technique of bonding a stretched film and a polarizer to form a circular polarizing plate, and arranging the circular polarizing plate on the front side of a display. At this time, the above-mention...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30
CPCG02B5/305
Inventor 畠山晋平
Owner KONICA MINOLTA INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com