JP2021121862A5 - - Google Patents

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Publication number
JP2021121862A5
JP2021121862A5 JP2021075511A JP2021075511A JP2021121862A5 JP 2021121862 A5 JP2021121862 A5 JP 2021121862A5 JP 2021075511 A JP2021075511 A JP 2021075511A JP 2021075511 A JP2021075511 A JP 2021075511A JP 2021121862 A5 JP2021121862 A5 JP 2021121862A5
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JP
Japan
Prior art keywords
polarizer
polarizing plate
film
circularly polarizing
retardation
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Pending
Application number
JP2021075511A
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Japanese (ja)
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JP2021121862A (en
Filing date
Publication date
Priority claimed from JP2019229519A external-priority patent/JP2020126226A/en
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Publication of JP2021121862A publication Critical patent/JP2021121862A/en
Publication of JP2021121862A5 publication Critical patent/JP2021121862A5/ja
Pending legal-status Critical Current

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Claims (8)

接着層を介して積層される偏光板と位相差フィルムとを有する円偏光板であって、
前記偏光板は、偏光子と、前記偏光子の少なくとも一方の面に貼合された保護フィルムとを含み、
前記偏光子は、ポリビニルアルコール系樹脂フィルムにヨウ素が吸着配向したフィルムであり、
前記偏光子のホウ素含有量は、2.76重量%以上であり、
前記保護フィルムの透湿度は、50g/m・24hr以上であり、
前記位相差フィルムは、重合性液晶化合物が硬化した層からなる、逆波長分散性を示す位相差層と、配向膜とを含み、前記位相差フィルムの偏光子側に前記配向膜が配置され、
前記配向膜の厚さは、10nm~200nmの範囲内であり、
前記偏光子の前記位相差層とは反対側に前記保護フィルムを積層し、
前記偏光子の前記位相差層側には保護フィルムを有しない、円偏光板。
A circularly polarizing plate having a polarizing plate and a retardation film laminated via an adhesive layer ,
The polarizing plate includes a polarizer and a protective film attached to at least one surface of the polarizer,
The polarizer is a film in which iodine is adsorbed and oriented on a polyvinyl alcohol resin film,
The boron content of the polarizer is 2.76 % by weight or more,
The moisture permeability of the protective film is 50 g/m 2 · 24 hr or more,
The retardation film includes a retardation layer exhibiting reverse wavelength dispersion, which consists of a layer in which a polymerizable liquid crystal compound is cured , and an alignment film, and the alignment film is disposed on the polarizer side of the retardation film. ,
the thickness of the alignment film is in the range of 10 nm to 200 nm;
Laminating the protective film on the opposite side of the polarizer to the retardation layer,
A circularly polarizing plate having no protective film on the retardation layer side of the polarizer.
前記偏光子の厚みが、20μm以下である請求項1に記載の円偏光板。 2. The circularly polarizing plate according to claim 1, wherein the polarizer has a thickness of 20 [mu]m or less. 前記偏光子の視感度補正単体透過率が、40%以上である請求項1または2に記載の円偏光板。 3. The circularly polarizing plate according to claim 1, wherein the luminosity correction single transmittance of the polarizer is 40% or more. 前記偏光子を80℃で4時間保持したときに、幅2mmあたりの、吸収軸方向の収縮応力が、60N/mm以上である請求項1~3のいずれかに記載の円偏光板。 4. The circularly polarizing plate according to any one of claims 1 to 3, wherein when said polarizer is held at 80°C for 4 hours, the contraction stress in the absorption axis direction per width of 2 mm is 60 N/ mm2 or more. 前記偏光子の単体色相は、a*値が-0.90以上-0.60以下であり、b*値が2.70以上3.70以下である請求項1~4のいずれかに記載の円偏光板。 5. The single hue of the polarizer according to any one of claims 1 to 4, wherein the a* value is −0.90 or more and −0.60 or less and the b* value is 2.70 or more and 3.70 or less. circular polarizer. 前記偏光板と前記位相差フィルムとが、活性エネルギー線硬化性接着剤により貼合されている請求項1~のいずれかに記載の円偏光板。 6. The circularly polarizing plate according to any one of claims 1 to 5 , wherein the polarizing plate and the retardation film are bonded together with an active energy ray-curable adhesive. 前面板、遮光パターンおよびタッチセンサをさらに有する請求項1~のいずれかに記載の円偏光板。 7. The circularly polarizing plate according to any one of claims 1 to 6 , further comprising a front plate, a light shielding pattern and a touch sensor. 請求項1~のいずれかに記載の円偏光板と、表示素子とを備える表示装置。 A display device comprising the circularly polarizing plate according to any one of claims 1 to 7 and a display element.
JP2021075511A 2019-02-04 2021-04-28 Polarizing plate and display device Pending JP2021121862A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019017655 2019-02-04
JP2019017655 2019-02-04
JP2019229519A JP2020126226A (en) 2019-02-04 2019-12-19 Polarizing plate and display device

Related Parent Applications (1)

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JP2019229519A Division JP2020126226A (en) 2019-02-04 2019-12-19 Polarizing plate and display device

Publications (2)

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JP2021121862A JP2021121862A (en) 2021-08-26
JP2021121862A5 true JP2021121862A5 (en) 2022-12-21

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JP2019229519A Pending JP2020126226A (en) 2019-02-04 2019-12-19 Polarizing plate and display device
JP2021075511A Pending JP2021121862A (en) 2019-02-04 2021-04-28 Polarizing plate and display device

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JP2019229519A Pending JP2020126226A (en) 2019-02-04 2019-12-19 Polarizing plate and display device

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