JP2021144214A5 - - Google Patents
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- Publication number
- JP2021144214A5 JP2021144214A5 JP2021032613A JP2021032613A JP2021144214A5 JP 2021144214 A5 JP2021144214 A5 JP 2021144214A5 JP 2021032613 A JP2021032613 A JP 2021032613A JP 2021032613 A JP2021032613 A JP 2021032613A JP 2021144214 A5 JP2021144214 A5 JP 2021144214A5
- Authority
- JP
- Japan
- Prior art keywords
- front plate
- less
- phase difference
- hard coat
- protective resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 230000001681 protective effect Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 6
- 239000000758 substrate Substances 0.000 claims 3
- 239000012790 adhesive layer Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- 230000000007 visual effect Effects 0.000 claims 2
- 239000011521 glass Substances 0.000 claims 1
Description
保護樹脂層１２の２３℃における光弾性係数の絶対値は、例えば、１５０．０×１０－１３ｃｍ２／ｄｙｎ以下、好ましくは、１００．０×１０－１３ｃｍ２／ｄｙｎ以下、より好ましくは、５０．０×１０－１３ｃｍ２／ｄｙｎ以下、さらに好ましくは、３０．０×１０－１３ｃｍ２／ｄｙｎ以下、とりわけ好ましくは、１０．０×１０－１３ｃｍ２／ｄｙｎ以下である。好適には、保護樹脂層１２の面内方向位相差Ｒｅ（５５０）が５ｎｍ以下で、かつ、２３℃における光弾性係数の絶対値が３０．０×１０－１３ｃｍ２／ｄｙｎ以下であれば、屈曲試験前後の屈曲部２５の面内方向位相差Ｒｅ（５５０）の差Δを、顕著に抑制でき、そのため、折り曲げ性に優れ、さらには、折り畳み性に優れる。
The absolute value of the photoelastic coefficient of the protective resin layer 12 at 23 ° C. is, for example, 150.0 × 10-13 cm 2 / dyne or less, preferably 100.0 × 10-13 cm 2 / dyne or less, more preferable . Further, 50.0 × 10 -13 cm 2 / dyn or less, more preferably 30.0 × 10 -13 cm 2 / dyn or less, and particularly preferably 10.0 × 10 -13 cm 2 / dyn or less. Is. Preferably, the in-plane retardation Re (550) of the protective resin layer 12 is 5 nm or less, and the absolute value of the photoelastic coefficient at 23 ° C. is 30.0 × 10 -13 cm 2 / dyn or less. The difference Δ of the in-plane direction phase difference Re (550) of the bent portion 25 before and after the bending test can be remarkably suppressed, and therefore, the bending property is excellent and the folding property is excellent.
Claims (6)
前記前面板は、保護樹脂層と、ハードコート層とを厚み方向に順に備え、
前記前面板は、さらに、基板と、粘着層とを備え、
前記基板と、前記粘着層と、前記保護樹脂層と、前記ハードコート層とが、厚み方向に順に配置され、
前記基板が、薄ガラス板を含むことを特徴とする、前面板。 A front plate having an in-plane directional phase difference Re (550) measured with light having a wavelength of 550 nm of 10 nm or less.
The front plate is provided with a protective resin layer and a hard coat layer in order in the thickness direction.
The front plate further comprises a substrate and an adhesive layer.
The substrate, the adhesive layer, the protective resin layer, and the hard coat layer are arranged in order in the thickness direction.
A front plate, characterized in that the substrate includes a thin glass plate.
請求項１～４のいずれか一項に記載の前面板とを
視認側に向かって順に備えることを特徴とする、光学積層体。 With a polarizing film
An optical laminate, characterized in that the front plate according to any one of claims 1 to 4 is provided in order toward the visual recognition side.
請求項５に記載の光学積層体とを
視認側に向かって順に備えることを特徴とする、画像表示装置。
Image display member and
An image display device, characterized in that the optical laminate according to claim 5 is provided in order toward the visual recognition side.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2021/008954 WO2021182384A1 (en) | 2020-03-11 | 2021-03-08 | Front plate, optical layered body, and image display device |
| KR1020227029529A KR20220146476A (en) | 2020-03-11 | 2021-03-08 | Front plate, optical laminate and image display device |
| CN202180020673.1A CN115280189A (en) | 2020-03-11 | 2021-03-08 | Front panel, optical laminate, and image display device |
| TW110108377A TW202138845A (en) | 2020-03-11 | 2021-03-09 | Front plate, optical layered body, and image display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020042481 | 2020-03-11 | ||
| JP2020042481 | 2020-03-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2021144214A JP2021144214A (en) | 2021-09-24 |
| JP2021144214A5 true JP2021144214A5 (en) | 2022-05-23 |
| JP7395527B2 JP7395527B2 (en) | 2023-12-11 |
Family
ID=77766507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021032613A Active JP7395527B2 (en) | 2020-03-11 | 2021-03-02 | Front plate, optical laminate and image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7395527B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023040664A (en) * | 2021-09-10 | 2023-03-23 | 日東電工株式会社 | Laminate, optical member with laminate, and image display device |
| JP2023040665A (en) * | 2021-09-10 | 2023-03-23 | 日東電工株式会社 | Laminate, optical member with laminate, and image display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10030134B2 (en) | 2011-07-01 | 2018-07-24 | Asahi Kasei Kabushiki Kaisha | Acrylic thermoplastic resin composition and molded article thereof |
| CN110177687B (en) | 2017-03-03 | 2022-06-03 | 富士胶片株式会社 | Optical film, front panel, image display device, mirror, resistive touch panel, and capacitive touch panel |
-
2021
- 2021-03-02 JP JP2021032613A patent/JP7395527B2/en active Active
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