Check patentability & draft patents in minutes with Patsnap Eureka AI!

Laminated body, conductive laminated body, and touch panel

A laminated body, transparent conductive layer technology, applied in the direction of layered products, electronic equipment, electrical digital data processing, etc., can solve the problem of liquid adhesives or liquid adhesives that are difficult to spread, wettability decline, water contact angle increase etc.

Active Publication Date: 2018-10-12
DAI NIPPON PRINTING CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the sputtering process, there is a problem that the substrate film is wrinkled and twisted during transportation.
If such movement of low-molecular components occurs, the following problems will arise: the water contact angle of the surface after peeling off the above-mentioned protective film will increase (that is, the wettability will decrease), and when it is attached to other optical components later, Reduced adhesion to parts; liquid adhesives or liquid adhesives that are difficult to spread; etc.
[0012] For example, Patent Document 2 discloses a technology of using a hard coat film on a base film with a controlled water contact angle for a capacitive touch panel, but does not perform any research on the water contact angle after heat treatment. Research

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
  • Laminated body, conductive laminated body, and touch panel
  • Laminated body, conductive laminated body, and touch panel
  • Laminated body, conductive laminated body, and touch panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0212] On one side (on the primer layer) of a biaxially stretched polyester film (manufactured by Toyobo Co., Ltd., A4300; with primer) with a thickness of 100 μm, a hard coating composition of the following formulation was used and dried according to The thickness of the coating is 2.0μm to form a hard coat layer.

[0213] Next, the high refractive index layer composition and the low refractive index layer composition of the following formulations were used to sequentially form a high refractive index layer (thickness 50 nm, refractive index 1.68) on the hard coat layer of the biaxially stretched polyester film And a low refractive index layer (thickness 30nm, refractive index 1.48).

[0214] It should be noted that the drying conditions of the optical function layer composed of the hard coat layer, the high refractive index layer, and the low refractive index layer are all 70° C. for 60 seconds. In addition, after the coating film of the composition for the hard coat layer, the ...

Embodiment 2

[0229] The composition 1 for the low contact angle layer of Example 1 was changed to the composition 2 for the low contact angle layer of the following formulation, and the composition 2 for the low contact angle layer was applied so that the thickness after drying was 2.0 μm After the coating film is formed, it is dried at 70°C for 60 seconds and irradiated with ultraviolet rays (150mJ / cm 2 ), except that the low contact angle layer was formed, a laminate was obtained in the same manner as in Example 1.

[0230]

[0231] Acrylic polymer solution (weight average molecular weight 160,000, double bond equivalent 1,000, solid content 25%) 16 parts

[0232] Dipentaerythritol hexaacrylate (weight average molecular weight 580, double bond equivalent of 100) 4 parts

[0233] Photopolymerization initiator (manufactured by BASF, Irgacure127) 0.8 parts

[0234] 30 parts of methyl isobutyl ketone

Embodiment 3

[0236] After forming an optical functional layer in the same manner as in Example 1, the composition for hard coating was applied to the other side of the biaxially stretched polyester film, and the coating film was formed so that the thickness after drying was 2.0 μm , Drying the coating film and irradiating ultraviolet rays to form a hard coat layer (refractive index 1.52). It should be noted that the drying conditions of the coating film are 70°C, 60 seconds, and the ultraviolet radiation dose is set to 150mJ / cm 2 . Next, using the composition 1 for a low contact angle layer, a low contact angle layer was formed on the hard coat layer formed on the other side of the biaxially stretched polyester film so as to have a thickness of 20 nm. The coating film formed by applying the composition 1 for the low contact angle layer was dried under the conditions of 70° C. and 60 seconds to obtain a laminate.

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a laminate, a conductive laminate, and a touch panel. Under a condition that a film provided with an adhesive layer is attached to the surface, opposite to a transparent conductive layer side, of a substrate film, then heat treatment is performed, and then the film provided with the adhesive layer is peeled off, the laminate can avoid a phenomenon that the adhesive performance is reduced as the water contact angle of the surface attached with the film provided with the adhesive layer is increased. One surface of the substrate film is provided with more than one optical function layer, the other surface of the substrate film is provided with a low-contact-angle layer, and the laminate is used for forming a patterned transparent conductive layer on the side, opposite to the substrate film side, of the optical function layer. The laminate is characterized in that the film provided with the adhesive layer is pasted to the surface of the low-contact-angle layer, the film provided with the adhesive layer is peeled off after being heated at 150 DEG C for 60 minutes, and the wetting tension specified in JIS K6768(1999) of the low-contact-angle layer is larger than 30mN / m.

Description

Technical field [0001] The present invention relates to a laminate, a conductive laminate, and a touch panel. Background technique [0002] Currently, touch panels are widely used as input units in various devices including display devices having display panels such as liquid crystal display panels, such as PDAs (Personal Digital Assistants), portable information terminals, and car navigation systems. [0003] The touch panel is equipped with a transparent conductive film. In the transparent conductive film, a transparent conductive layer containing ITO (Indium Tin Oxide), metal fibers, carbon nanotubes, etc. is provided on the base film. Generally, the touch panel The display panel is manufactured separately and is arranged in front of the above-mentioned display panel. [0004] Here, all or part of the transparent conductive layer containing ITO and the like and the optical adjustment layer are usually provided on the base film through sputtering treatment. However, the sputtering...

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): B32B7/12B32B33/00G06F3/044
CPCB32B7/12B32B33/00B32B2250/03B32B2457/208G06F3/044G06F2203/04103
Inventor 小川善正桥本和哉唐泽真义田中麻友矶岛征一芳片邦聪
Owner DAI NIPPON PRINTING CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com