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Hard coating film and touch panel display device provided with same

A technology for display devices and hard coating films, which can be applied to household appliances, other household appliances, instruments, etc., and can solve problems such as cracks in hard coating films

Active Publication Date: 2014-12-24
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Along with this, if the hard coat film is thinned, it is easy to cause cracks in the hard coat film due to the impact during touch panel operation

Method used

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  • Hard coating film and touch panel display device provided with same
  • Hard coating film and touch panel display device provided with same
  • Hard coating film and touch panel display device provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～20

[0275] (Examples 1-20, Comparative Examples 1-18)

[0276] (production of cellulose ester film 1)

[0277] The following materials were sequentially put into a closed container, and after raising the temperature in the container from 20°C to 80°C, the temperature was kept at 80°C and stirred for 3 hours to completely dissolve the cellulose ester. Silica microparticles are dispersed and added to a solution of solvent and a small amount of cellulose ester added in advance. This coating material was filtered using filter paper (Azumi Filter Paper Co., Ltd. product, Azumi Filter Paper No. 244), and coating composition 1 was obtained.

[0278] Cellulose triacetate (acetyl substitution degree 2.95) 100 parts by mass

[0279] 8.7 parts by mass of triphenyl phosphate

[0280] (The content in the cellulose ester film is 8.0% by mass)

[0281]

[0282] Next, the obtained coating composition 1 was cast on a support made of a stainless steel belt at a temperature of 35° C. through ...

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Abstract

The hard coating layer (42) of a hard coating film (40) is formed on a cellulose ester film (41) by coating a hard coating layer-forming composition and curing said composition. The film thickness of the hard coating film (40) is 15 [mu]m to 35 [mu]m. 6 weight% to 12 weight% of a plasticizer that promotes the formation of a mixed layer (43) of the cellulose ester film (41) and the hard coating layer (42) is contained in the cellulose ester film (41), and more of the plasticizer is contained in the hard coating layer (42) side of the cellulose ester film (41) than the side opposite to the hard coating layer (42).

Description

technical field [0001] The present invention relates to a hard coat film in which a hard coat layer is formed on a cellulose ester film, and a touch panel display device including the hard coat film. Background technique [0002] Modern society can be said to be a highly information society. The flow of information has increased, and everyone's requirements for information collection and selection have also increased. Against such a social background, there is an increasing demand for mobile information terminals that can process information while moving, such as mobile information terminals and car navigation systems, and their development is being actively promoted. [0003] In mobile information terminals, it is becoming more common to use a transparent touch panel overlapping a display unit of a display device with emphasis on portability rather than a keyboard as an interface with an operator. [0004] In a general display equipped with a touch panel, it is required to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10B32B23/08C08J7/044C08J7/046C08J7/056
CPCG02B1/105B32B23/04B32B23/16B32B23/20B32B2457/00B32B2457/208C08J2301/12C08J2433/08C08J7/0427G02B1/14C08J7/046C08J7/044C08J7/056
Inventor 久木亮太
Owner KONICA MINOLTA INC
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