Optical film and display device with contact control plate

A touch panel, optical film technology, applied in optics, optical components, instruments, etc., can solve problems such as inability to fully suppress glare

Active Publication Date: 2016-02-10
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for an ultra-high-definition image display device, it may not be possible to suffici

Method used

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  • Optical film and display device with contact control plate
  • Optical film and display device with contact control plate
  • Optical film and display device with contact control plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0339] (production of optical film)

[0340] Prepare a light-transmitting substrate (cellulose triacetate film, thickness 40 μm, manufactured by Konica Minolta, KC4UAW), and coat the optical layer composition of the following composition on one side of the light-transmitting substrate, Form a coating film.

[0341] Next, for the formed coating film, dry air at 50° C. was circulated at a flow rate of 0.2 m / s for 30 seconds, and then dried at a flow rate of 10 m / s at 70° C. for 30 seconds. Thereby, the solvent in the coating film is evaporated.

[0342] Then, using an ultraviolet irradiation device (manufactured by FusionUV Systems Japan, light source H bulb), under a nitrogen atmosphere (oxygen concentration 200ppm or less), the cumulative light intensity is 100mJ / cm 2 The coating film was cured by irradiating ultraviolet rays in such a manner that an optical layer having a thickness of 5.0 μm (at the time of curing) was formed to produce an optical film.

[0343] (compositi...

Embodiment 2

[0346] In addition to making the curing conditions of the coating film such that the cumulative light intensity of ultraviolet rays is 50mJ / cm 2 The concave-convex layer was formed in the same manner as the optical layer of Example 1, except that the coating film was cured by irradiation in the same manner.

[0347] The composition for the low-refractive-index layer shown below was coated on the surface of the formed uneven|corrugated layer, and the coating film was formed.

[0348] Next, for the formed coating film, dry air at 40° C. was circulated at a flow rate of 0.2 m / s for 15 seconds, and then dried at a flow rate of 10 m / s at 40° C. for 30 seconds. This evaporates the solvent in the coating film.

[0349] Then, using an ultraviolet irradiation device (manufactured by FusionUV Systems Japan, light source H bulb), under a nitrogen atmosphere (oxygen concentration 200ppm or less), the cumulative light intensity is 100mJ / cm 2 The coating film was cured by irradiating ultr...

Embodiment 3

[0354] In addition to making the mixing amount of silica fine particles in the composition for optical layers 0.8 parts by mass, the drying conditions of the coating film were to circulate dry air at 70° C. An optical film was produced in the same manner as in Example 1 except that 70° C. dry air was circulated at a flow rate of s for 30 seconds.

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Abstract

The invention provides an optical film which can inhibit the reflection, the newton's ring, inhibit glare, and has total low haze and internal haze and a display device which can fully inhibit the watermark and generation of the glare. The optical film is provided with concave-convex-shaped optical layers which are stacked on the light transmission base material. The optical film is characterized in that the total haze value is above 0% and below 5%; the internal haze value is above 0% and below 5%; the definition of the transmission image using the 0.125mm width optical comb to measure is C(0.125). When the definition of the transmission image using the 0.25 mm width optical comb measurement is set as C(0.25), the following formula (1) and the formula (2) can be satisfied C(0.25)-C (0.25)>=2% (1) C (0.125) <= 64%.

Description

technical field [0001] The present invention relates to an optical film and a display device with a touch panel. Background technique [0002] On the image display surface of image display devices such as liquid crystal display (LCD), cathode ray tube display device (CRT), plasma display device (PDP), electroluminescent display device (ELD), field emission display device (FED), usually, for To suppress the reflection of the viewer and the viewer's background, etc., an anti-glare film having unevenness on the surface and an anti-reflection film having an anti-reflection layer on the outermost surface are provided. [0003] The anti-glare film is a film that scatters external light on the uneven surface of the anti-glare layer to suppress the reflection of the observer and the background of the observer. The antiglare film mainly includes a translucent substrate and an antiglare layer having a concave-convex surface provided on the translucent substrate. [0004] The anti-gl...

Claims

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Application Information

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IPC IPC(8): G02B1/10G02B5/02
CPCG02B5/0221G06F3/041G06F2203/04103
Inventor 小久见尚一郎古井玄小林笃弘恒川雅行
Owner DAI NIPPON PRINTING CO LTD
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