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

Unevenness follow-up property laminated member and display device attached with touch panel using same

A follow-up, lamination technology, applied in applications, layered products, household appliances, etc., can solve the problems of adhesive exudation pass rate, inability to obtain sufficient optical adaptability, height difference followability, image quality degradation, etc. , to achieve the effect of excellent elongation and excellent fit adaptability

Active Publication Date: 2014-03-12
LINTEC CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, double-sided tapes are required to follow various height differences. However, the actual situation is that the double-sided tapes with a polyethylene terephthalate (PET) core material commonly used in the past cannot obtain sufficient Optical adaptability, height difference followability
[0003] However, there is an air layer (gap) for impact resistance between the display body and the protective plate of the mobile phone, but the difference in refractive index between the air and the display body and the protective plate may cause light diffusion and lower image quality. question
As a solution to this problem, a method of injecting ultraviolet curable resin and a multi-layered body of an adhesive have been proposed. However, the former must require the introduction of equipment for resin injection and ultraviolet irradiation, and the latter has problems caused by adhesive leakage. The problem of lower pass rate
[0004] In order to improve these problems, there are technologies that use acrylic resin as the core material (for example, refer to Patent Document 1), and technologies that use polyurethane film (for example, refer to Patent Document 2). However, for the former, since the core material is acrylic resin, so in Phenomena such as bleeding of the adhesive are likely to occur in the processing steps, and the latter has problems such as low level followability due to the elastic modulus to the extent that the film shape can be maintained.

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
  • Unevenness follow-up property laminated member and display device attached with touch panel using same
  • Unevenness follow-up property laminated member and display device attached with touch panel using same
  • Unevenness follow-up property laminated member and display device attached with touch panel using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] On a release film (manufactured by Lintec, trade name 'SP-PET38T103-1', thickness 38 μm), use a slit coater to coat the coating for forming the resin layer (A) so that the film thickness after drying becomes 20 μm. The lotion 1 was dried at 120°C for 1 minute, and then bonded with a release film (manufactured by Lintec, trade name 'SP-PET381031', thickness 38 µm) to obtain a stress buffering resin layer (A) 6 . Next, a resin layer (B) was formed by applying a resin layer (B) on a release film (manufactured by Lintec, trade name 'SP-PET38T103-1', thickness 38 μm) using a slit coater so that the film thickness after drying was 40 μm. The coating liquid 4 was dried at 120° C. for 1 minute, and then the coated surface was attached to the stress buffering resin layer (A) 6 from which one peeling film was peeled off, to obtain a laminate. In addition, on a release film (manufactured by Lintec, trade name 'SP-PET381031', thickness 38 μm), a coating for forming the resin layer ...

Embodiment 2

[0097] About Example 1, the same operation as Example 1 was performed except having used the coating liquid 2 for resin layer (A) formation instead of the coating liquid 1 for resin layer (A) formation. The irregularity following laminated part 8 was obtained. Table 1 shows the evaluation results of each characteristic.

Embodiment 3

[0099] Regarding Example 1, the same operation as in Example 1 was performed except that the coating solution 5 for forming the resin layer (B) was used instead of the coating solution 4 for forming the resin layer (B) for both layers of the resin layer (B). The irregularity following laminated part 9 was obtained. Table 1 shows the evaluation results of each characteristic.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention provides an unevenness follow-up property laminated member and a display device attached with a touch panel using the same. The unevenness follow-up property laminated member is suitable for producing mobile products, e.g. portable telephones and touch panels, has excellent processing property and joint adaptability to height difference in a general operation environment, is capable of preventing identification property from reducing due to interface reflection, and has optical characteristics of optical isotropy, high transmission rate and the like. The unevenness follow-up property laminated member is provided with a stress buffer resin layer (A) formed by a moulding method and stress buffer resin layers (B) arranged on two surfaces of the member, the extending rate of the laminated member is more than 100%, the stress corresponding to the 100% extending rate is less than 2MPa, and a stress difference of 300% extending rate and 100% extending rate is more than 0.1MPa. The invention also relates to a display device attached with the touch panel, wherein a touch panel assembly and a display are fixed by the laminated member.

Description

technical field [0001] The present invention relates to an unevenness-following laminated member and a display device with a touch panel using the same. On both sides of the resin layer (A), a laminated member having an excellent elongation of the stress buffering resin layer (B) is provided, and when used in the production of mobile products such as mobile phones, touch panels, etc., the processability is excellent. It has excellent adaptability to the height difference in the usual working environment, does not reduce the visibility of interface reflection, and has optical characteristics such as optical isotropy and high transmittance. The component is a display device with a touch panel that fixes a touch panel assembly and a display body. Background technique [0002] In the past, double-sided tapes were generally used in the production of mobile products such as mobile phones and touch panels. The requirements for chemicalization have also become stronger. On the ot...

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): B32B7/02G06F3/041
CPCB32B27/08B32B2457/208G06F3/041
Inventor 米山裕之本乡有记
Owner LINTEC CORP
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