JPWO2020026139A5 - - Google Patents

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JPWO2020026139A5
JPWO2020026139A5 JP2021505416A JP2021505416A JPWO2020026139A5 JP WO2020026139 A5 JPWO2020026139 A5 JP WO2020026139A5 JP 2021505416 A JP2021505416 A JP 2021505416A JP 2021505416 A JP2021505416 A JP 2021505416A JP WO2020026139 A5 JPWO2020026139 A5 JP WO2020026139A5
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JP2021533407A (en
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Priority claimed from PCT/IB2019/056489 external-priority patent/WO2020026139A1/en
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本明細書中に引用している刊行物の完全な開示は、それぞれが個々に組み込まれたかのように、その全体が参照により組み込まれる。本発明に対する様々な改変及び変更が、本発明の範囲及び趣旨から逸脱することなく、当業者には明らかとなるであろう。本発明は、本明細書に記載の例示的な実施形態及び実施例によって不当に限定されることを意図するものではなく、このような実施例及び実施形態は例としてのみ提示されており、本発明の範囲は、本明細書で以下のとおり記載される特許請求の範囲によってのみ限定されることを意図しているものと理解されたい。以下に例示的実施形態を示す。
［項目１］
光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、光吸収材料の第２の濃度Ｃ ２ を有するクラッド層の間に挟まれた、前記光吸収材料の第１の濃度Ｃ １ を有するコアを含み、Ｃ ２ ＜Ｃ １ であり、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、
光制御フィルム。
［項目２］
前記光吸収材料が、光吸収粒子を含む、項目１に記載の光制御フィルム。
［項目３］
前記光吸収材料が、有機光吸収材料を含む、項目１又は２に記載の光制御フィルム。
［項目４］
前記光吸収材料が、カーボンブラック粒子を含む、項目１～３のいずれか一項に記載の光制御フィルム。
［項目５］
前記光吸収材料が、約５００ナノメートル未満のメジアン粒径を有する光吸収粒子を含む、項目１～４のいずれか一項に記載の光制御フィルム。
［項目６］
前記コアが、３０重量％～１００重量％の光吸収材料を含み、前記クラッド層が、０．５重量％～５０重量％の光吸収材料を含む、項目１～５のいずれか一項に記載の光制御フィルム。
［項目７］
前記コアが、７５重量％～９０重量％の光吸収材料を含む、項目６に記載の光制御フィルム。
［項目８］
前記クラッド層が、２５重量％～４５重量％の光吸収材料を含む、項目６又は７に記載の光制御フィルム。
［項目９］
前記クラッド層が、光吸収粒子、非光吸収性希釈剤、及び有機ポリマー材料を含む、項目１～８のいずれか一項に記載の光制御フィルム。
［項目１０］
前記非光吸収性希釈剤が、シリカ粒子を含む、項目９に記載の光制御フィルム。
［項目１１］
前記透過領域が、５度未満の壁角度を有する、項目１～１０のいずれか一項に記載の光制御フィルム。
［項目１２］
前記透過領域及び吸収領域が、４０ミクロン～４００ミクロンの範囲の高さを有する、項目１～１１のいずれか一項に記載の光制御フィルム。
［項目１３］
前記コアが、５ミクロン以下の平均幅を有する、項目１～１２のいずれか一項に記載の光制御フィルム。
［項目１４］
前記クラッド層が、１ミクロン以下の平均幅を有する、項目１～１３のいずれか一項に記載の光制御フィルム。
［項目１５］
前記クラッド層が、１００ｎｍ～５００ｎｍの平均幅を有する、項目１４に記載の光制御フィルム。
［項目１６］
前記吸収領域が、少なくとも５０のアスペクト比を有する、項目１～１５のいずれか一項に記載の光制御フィルム。
［項目１７］
前記透過領域が、少なくとも２のアスペクト比を有する、項目１～１６のいずれか一項に記載の光制御フィルム。
［項目１８］
前記吸収領域が、１０ミクロン～４００ミクロンの平均ピッチを有する、項目１～１７のいずれか一項に記載の光制御フィルム。
［項目１９］
前記光制御フィルムが、０度の視野角において少なくとも７５％の相対透過率を有する、項目１～１８のいずれか一項に記載の光制御フィルム。
［項目２０］
前記光制御フィルムが、３５度～８０度の視野角において５％以下の平均相対透過率を有する、項目１～１９のいずれか一項に記載の光制御フィルム。
［項目２１］
前記クラッド層が、前記コア上のコンフォーマルコーティングである、項目１～２０のいずれか一項に記載の光制御フィルム。
［項目２２］
前記クラッド層上に配置された第２のクラッド層を更に備える、項目１～２１のいずれか一項に記載の光制御フィルム。
［項目２３］
前記コアが、少なくとも３０のアスペクト比を有する、項目１～２２のいずれか一項に記載の光制御フィルム。
［項目２４］
前記吸収領域が、高分子電解質を含む、項目１～２３のいずれか一項に記載の光制御フィルム。
［項目２５］
光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、第２の吸光係数ｋ ２ を有するクラッド層の間に挟まれた、第１の吸光係数ｋ １ を有するコアを含み、ｋ ２ ＜ｋ １ であり、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、光制御フィルム。
［項目２６］
前記コア及び前記クラッド層が、光吸収粒子を含む光吸収材料を含む、項目２５に記載の光制御フィルム。
［項目２７］
前記コア及び前記クラッド層が、有機光吸収材料を含む、項目２５又は２６に記載の光制御フィルム。
［項目２８］
前記コア及び前記クラッド層が、カーボンブラック粒子を含む、項目２５～２７のいずれか一項に記載の光制御フィルム。
［項目２９］
前記コア及び前記クラッド層が、約５００ナノメートル未満のメジアン粒径を有する光吸収粒子を含む、項目２５～２８のいずれか一項に記載の光制御フィルム。
［項目３０］
ｋ １ が、０．２～０．４であり、ｋ ２ が、０．００５～０．１５である、項目２５～２９のいずれか一項に記載の光制御フィルム。
［項目３１］
前記クラッド層が、光吸収粒子、非光吸収性希釈剤、及び有機ポリマー材料を含む、項目２５～３０のいずれか一項に記載の光制御フィルム。
［項目３２］
前記非光吸収性希釈剤が、シリカ粒子を含む、項目３１に記載の光制御フィルム。
［項目３３］
前記透過領域が、５度未満の壁角度を有する、項目２５～３２のいずれか一項に記載の光制御フィルム。
［項目３４］
前記透過領域及び吸収領域が、４０ミクロン～４００ミクロンの範囲の高さを有する、項目２５～３３のいずれか一項に記載の光制御フィルム。
［項目３５］
前記コアが、５ミクロン以下の平均幅を有する、項目２５～３４のいずれか一項に記載の光制御フィルム。
［項目３６］
前記クラッド層が、１ミクロン以下の平均幅を有する、項目２５～３５のいずれか一項に記載の光制御フィルム。
［項目３７］
前記クラッド層が、１００ｎｍ～５００ｎｍの平均幅を有する、項目３６に記載の光制御フィルム。
［項目３８］
前記吸収領域が、少なくとも５０のアスペクト比を有する、項目２５～３７のいずれか一項に記載の光制御フィルム。
［項目３９］
前記透過領域が、少なくとも２のアスペクト比を有する、項目２５～３８のいずれか一項に記載の光制御フィルム。
［項目４０］
前記吸収領域が、１０ミクロン～４００ミクロンの平均ピッチを有する、項目２５～３９のいずれか一項に記載の光制御フィルム。
［項目４１］
前記光制御フィルムが、０度の視野角において少なくとも７５％の相対透過率を有する、項目２５～４０のいずれか一項に記載の光制御フィルム。
［項目４２］
前記光制御フィルムが、３５度～８度の視野角において５％以下の平均相対透過率を有する、項目２５～４１のいずれか一項に記載の光制御フィルム。
［項目４３］
前記クラッド層が、前記コア上のコンフォーマルコーティングである、項目２５～４２のいずれか一項に記載の光制御フィルム。
［項目４４］
前記クラッド層上に配置された第２のクラッド層を更に備える、項目２５～４３のいずれか一項に記載の光制御フィルム。
［項目４５］
前記コアが、少なくとも３０のアスペクト比を有する、項目２５～４４のいずれか一項に記載の光制御フィルム。
［項目４６］
前記吸収領域が、高分子電解質を含む、項目２５～４５のいずれか一項に記載の光制御フィルム。
［項目４７］
光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、光吸収粒子及び非光吸収性希釈剤を含むクラッド層の間に挟まれた、光吸収粒子を含むコアを含み、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、
光制御フィルム。
［項目４８］
前記コア及び前記クラッド層が、有機光吸収粒子を含む、項目４７に記載の光制御フィルム。
［項目４９］
前記コア及び前記クラッド層が、カーボンブラック粒子を含む、項目４７又は４８に記載の光制御フィルム。
［項目５０］
前記コア及び前記クラッド層が、約５００ナノメートル未満のメジアン粒径を有する光吸収粒子を含む、項目４７～４９のいずれか一項に記載の光制御フィルム。
［項目５１］
前記クラッド層が、光吸収粒子、非光吸収性希釈剤、及び有機ポリマー材料を含む、項目４７～５０のいずれか一項に記載の光制御フィルム。
［項目５２］
前記非光吸収性希釈剤が、シリカ粒子を含む、項目５１に記載の光制御フィルム。
［項目５３］
前記透過領域が、５度未満の壁角度を有する、項目４７～５２のいずれか一項に記載の光制御フィルム。
［項目５４］
前記透過領域及び吸収領域が、４０ミクロン～４００ミクロンの範囲の高さを有する、項目４７～５３のいずれか一項に記載の光制御フィルム。
［項目５５］
前記コアが、５ミクロン以下の平均幅を有する、項目４７～５４のいずれか一項に記載の光制御フィルム。
［項目５６］
前記クラッド層が、１ミクロン以下の平均幅を有する、項目４７～５５のいずれか一項に記載の光制御フィルム。
［項目５７］
前記クラッド層が、１００ｎｍ～５００ｎｍの平均幅を有する、項目５６に記載の光制御フィルム。
［項目５８］
前記吸収領域が、少なくとも５０のアスペクト比を有する、項目４７～５７のいずれか一項に記載の光制御フィルム。
［項目５９］
前記透過領域が、少なくとも２のアスペクト比を有する、項目４７～５８のいずれか一項に記載の光制御フィルム。
［項目６０］
前記吸収領域が、１０ミクロン～２００ミクロンの平均ピッチを有する、項目４７～５９のいずれか一項に記載の光制御フィルム。
［項目６１］
前記光制御フィルムが、０度の視野角において少なくとも７５％の相対透過率を有する、項目４７～６０のいずれか一項に記載の光制御フィルム。
［項目６２］
前記光制御フィルムが、３５度～８０度の視野角において５％以下の平均相対透過率を有する、項目４７～６１のいずれか一項に記載の光制御フィルム。
［項目６３］
前記クラッド層が、前記コア上のコンフォーマルコーティングである、項目４７～６２のいずれか一項に記載の光制御フィルム。
［項目６４］
前記クラッド層上に配置された第２のクラッド層を更に備える、項目４７～６３のいずれか一項に記載の光制御フィルム。
［項目６５］
前記コアが、少なくとも３０のアスペクト比を有する、項目４７～６４のいずれか一項に記載の光制御フィルム。
［項目６６］
前記吸収領域が、高分子電解質を含む、項目４７～６５のいずれか一項に記載の光制御フィルム。
［項目６７］
光制御フィルムを製造する方法であって、
チャネルと交互に配置された複数の光透過領域を備えた微細構造フィルムを提供することであって、前記微細構造フィルムが、前記光透過領域の上面及び側壁、並びに前記チャネルの底面によって画定される表面を有する、微細構造フィルムを提供することと、
各層が光吸収粒子の濃度を有する、光吸収クラッド材料の１つ以上の層を前記表面に適用することと、
光吸収クラッド材料の前記１つ以上の層上に、光吸収粒子の第１の濃度Ｃ １ を有する光吸収コア材料の層を適用することと、
光吸収コア材料の前記層上に、各追加の層が光吸収粒子の濃度を有する、光吸収クラッド材料の追加の１つ以上の層を適用することと、
前記１つ以上の層光吸収クラッド材料、光吸収コア材料の前記層、及び光吸収クラッド材料の前記追加の１つ以上の層の少なくとも一部分を、前記光透過領域の前記上面及び前記チャネルの底面から除去することと、
を含み、
光吸収クラッド材料の前記１つ以上の層のそれぞれ及び光吸収クラッド材料の前記追加の１つ以上の層のそれぞれにおける光吸収材料の前記濃度が、Ｃ １ 未満である、
光制御フィルムを製造する方法。
［項目６８］
光制御フィルムを製造する方法であって、
チャネルと交互に配置された複数の光透過領域を備えた微細構造フィルムを提供することであって、前記微細構造フィルムが、前記光透過領域の上面及び側壁、並びに前記チャネルの底面によって画定される表面を有する、微細構造フィルムを提供することと、
各層が吸光係数を有する、光吸収クラッド材料の１つ以上の層を前記表面に適用することと、
光吸収クラッド材料の前記１つ以上の層上に、第１の吸光係数ｋ １ を有する光吸収コア材料の層を適用することと、
光吸収コア材料の前記層上に、各追加の層が吸光係数を有する、光吸収クラッド材料の追加の１つ以上の層を適用することと、
光吸収クラッド材料の前記１つ以上の層、光吸収コア材料の前記層、及び光吸収クラッド材料の前記追加の１つ以上の層の少なくとも一部分を、前記光透過領域の前記上面及び前記チャネルの底面から除去することと、
を含み、
光吸収クラッド材料の前記１つ以上の層のそれぞれ及び光吸収クラッド材料の前記追加の１つ以上の層のそれぞれの前記吸光係数が、ｋ １ 未満である、
光制御フィルムを製造する方法。
［項目６９］
光吸収クラッド材料の前記１つ以上の層を適用することと、光吸収コア材料の前記層を適用することと、光吸収クラッド材料の前記１つ以上の追加の層を適用することとが、レイヤー・バイ・レイヤーアセンブリを含む、項目６７又は６８に記載の方法。
［項目７０］
前記チャネルを有機ポリマー材料で充填することを更に含む、項目６７～６９のいずれか一項に記載の方法。

The complete disclosures of the publications cited herein are incorporated by reference in their entirety as if each were individually incorporated. Various modifications and alterations to this invention will become apparent to those skilled in the art without departing from the scope and spirit of this invention. The present invention is not intended to be unduly limited by the illustrative embodiments and examples set forth herein, which are presented by way of example only; It is to be understood that the scope of the invention is intended to be limited only by the claims set forth herein below. Illustrative embodiments are provided below.
[Item 1]
A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between said light input surface and said light output surface, said absorptive regions sandwiched between cladding layers having a second concentration C2 of light absorbing material; alternating transmissive and absorptive regions comprising a core having a first concentration C 1 of said light absorbing material, wherein C 2 < C 1 , said core having an aspect ratio of at least 20;
comprising
light control film.
[Item 2]
2. The light control film of item 1, wherein the light absorbing material comprises light absorbing particles.
[Item 3]
3. A light control film according to item 1 or 2, wherein the light absorbing material comprises an organic light absorbing material.
[Item 4]
4. The light control film of any one of items 1-3, wherein the light absorbing material comprises carbon black particles.
[Item 5]
5. The light control film of any one of items 1-4, wherein the light absorbing material comprises light absorbing particles having a median particle size of less than about 500 nanometers.
[Item 6]
6. Any one of items 1-5, wherein the core comprises 30% to 100% by weight of a light absorbing material and the cladding layer comprises 0.5% to 50% by weight of a light absorbing material. light control film.
[Item 7]
7. The light control film of item 6, wherein the core comprises 75% to 90% by weight of light absorbing material.
[Item 8]
8. A light control film according to item 6 or 7, wherein the cladding layer comprises from 25% to 45% by weight of light absorbing material.
[Item 9]
9. The light control film of any one of items 1-8, wherein the cladding layer comprises light absorbing particles, a non-light absorbing diluent, and an organic polymeric material.
[Item 10]
10. The light control film of item 9, wherein the non-light absorbing diluent comprises silica particles.
[Item 11]
11. The light control film of any one of items 1-10, wherein the transmissive areas have a wall angle of less than 5 degrees.
[Item 12]
12. The light control film of any one of items 1-11, wherein the transmissive and absorptive regions have a height in the range of 40 microns to 400 microns.
[Item 13]
13. The light control film of any one of items 1-12, wherein the core has an average width of 5 microns or less.
[Item 14]
14. The light control film of any one of items 1-13, wherein the cladding layer has an average width of 1 micron or less.
[Item 15]
15. The light control film of item 14, wherein the cladding layer has an average width of 100 nm to 500 nm.
[Item 16]
16. The light control film of any one of items 1-15, wherein the absorbing regions have an aspect ratio of at least 50.
[Item 17]
17. The light control film of any one of items 1-16, wherein the transmissive areas have an aspect ratio of at least two.
[Item 18]
18. The light control film of any one of items 1-17, wherein the absorbing regions have an average pitch of 10 microns to 400 microns.
[Item 19]
19. The light control film of any one of items 1-18, wherein the light control film has a relative transmittance of at least 75% at a viewing angle of 0 degrees.
[Item 20]
20. The light control film of any one of items 1-19, wherein the light control film has an average relative transmittance of 5% or less at viewing angles of 35 degrees to 80 degrees.
[Item 21]
21. The light control film of any one of items 1-20, wherein the cladding layer is a conformal coating on the core.
[Item 22]
22. The light control film of any one of items 1-21, further comprising a second cladding layer disposed on the cladding layer.
[Item 23]
23. The light control film of any one of items 1-22, wherein the core has an aspect ratio of at least 30.
[Item 24]
24. The light control film of any one of items 1-23, wherein the absorbing region comprises a polyelectrolyte.
[Item 25]
A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between the light input surface and the light output surface, the absorptive regions sandwiched between cladding layers having a second extinction coefficient k2; alternating transmissive and absorptive regions comprising a core having a first extinction coefficient k 1 , where k 2 <k 1 , said core having an aspect ratio of at least 20;
A light control film.
[Item 26]
26. The light control film of item 25, wherein the core and the cladding layers comprise a light absorbing material comprising light absorbing particles.
[Item 27]
27. A light control film according to item 25 or 26, wherein the core and the cladding layers comprise an organic light absorbing material.
[Item 28]
28. The light control film of any one of items 25-27, wherein the core and the cladding layers comprise carbon black particles.
[Item 29]
29. The light control film of any one of items 25-28, wherein the core and the cladding layers comprise light absorbing particles having a median particle size of less than about 500 nanometers.
[Item 30]
30. The light control film of any one of items 25-29, wherein k 1 is from 0.2 to 0.4 and k 2 is from 0.005 to 0.15.
[Item 31]
31. The light control film according to any one of items 25-30, wherein the cladding layer comprises light absorbing particles, a non-light absorbing diluent and an organic polymeric material.
[Item 32]
32. The light control film of item 31, wherein the non-light absorbing diluent comprises silica particles.
[Item 33]
33. The light control film of any one of items 25-32, wherein the transmissive areas have a wall angle of less than 5 degrees.
[Item 34]
34. The light control film of any one of items 25-33, wherein the transmissive and absorptive regions have a height in the range of 40 microns to 400 microns.
[Item 35]
35. The light control film of any one of items 25-34, wherein the core has an average width of 5 microns or less.
[Item 36]
36. The light control film of any one of items 25-35, wherein the cladding layer has an average width of 1 micron or less.
[Item 37]
37. The light control film of item 36, wherein the cladding layer has an average width of 100 nm to 500 nm.
[Item 38]
38. The light control film of any one of items 25-37, wherein the absorbing regions have an aspect ratio of at least 50.
[Item 39]
39. The light control film of any one of items 25-38, wherein the transmissive areas have an aspect ratio of at least two.
[Item 40]
40. The light control film of any one of items 25-39, wherein the absorbing regions have an average pitch of 10 microns to 400 microns.
[Item 41]
41. The light control film of any one of items 25-40, wherein the light control film has a relative transmittance of at least 75% at a viewing angle of 0 degrees.
[Item 42]
42. The light control film of any one of items 25-41, wherein the light control film has an average relative transmittance of 5% or less at a viewing angle of 35 degrees to 8 degrees.
[Item 43]
43. The light control film of any one of items 25-42, wherein the cladding layer is a conformal coating on the core.
[Item 44]
44. The light control film of any one of items 25-43, further comprising a second cladding layer disposed on the cladding layer.
[Item 45]
45. The light control film of any one of items 25-44, wherein the core has an aspect ratio of at least 30.
[Item 46]
46. The light control film of any one of items 25-45, wherein the absorbing region comprises a polyelectrolyte.
[Item 47]
A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between said light input surface and said light output surface, said absorptive regions sandwiched between cladding layers comprising light absorbing particles and a non-light absorbing diluent. alternating transmissive and absorptive regions comprising a core comprising light absorbing particles, said core having an aspect ratio of at least 20;
comprising
light control film.
[Item 48]
48. The light control film of item 47, wherein the core and the cladding layers comprise organic light absorbing particles.
[Item 49]
49. The light control film of item 47 or 48, wherein the core and the cladding layers comprise carbon black particles.
[Item 50]
50. The light control film of any one of items 47-49, wherein the core and the cladding layers comprise light absorbing particles having a median particle size of less than about 500 nanometers.
[Item 51]
51. The light control film of any one of items 47-50, wherein the cladding layer comprises light absorbing particles, a non-light absorbing diluent and an organic polymeric material.
[Item 52]
52. The light control film of item 51, wherein the non-light absorbing diluent comprises silica particles.
[Item 53]
53. The light control film of any one of items 47-52, wherein the transmissive areas have a wall angle of less than 5 degrees.
[Item 54]
54. The light control film of any one of items 47-53, wherein the transmissive and absorptive regions have a height in the range of 40 microns to 400 microns.
[Item 55]
55. The light control film of any one of items 47-54, wherein the core has an average width of 5 microns or less.
[Item 56]
56. The light control film of any one of items 47-55, wherein the cladding layer has an average width of 1 micron or less.
[Item 57]
57. The light control film of item 56, wherein the cladding layer has an average width of 100 nm to 500 nm.
[Item 58]
58. The light control film of any one of items 47-57, wherein the absorbing regions have an aspect ratio of at least 50.
[Item 59]
59. The light control film of any one of items 47-58, wherein the transmissive areas have an aspect ratio of at least two.
[Item 60]
60. The light control film of any one of items 47-59, wherein the absorbing regions have an average pitch of 10 microns to 200 microns.
[Item 61]
61. The light control film of any one of items 47-60, wherein the light control film has a relative transmittance of at least 75% at a viewing angle of 0 degrees.
[Item 62]
62. The light control film of any one of items 47-61, wherein the light control film has an average relative transmittance of 5% or less at viewing angles of 35 degrees to 80 degrees.
[Item 63]
63. The light control film of any one of items 47-62, wherein the cladding layer is a conformal coating on the core.
[Item 64]
64. The light control film of any one of items 47-63, further comprising a second cladding layer disposed on said cladding layer.
[Item 65]
65. The light control film of any one of items 47-64, wherein the core has an aspect ratio of at least 30.
[Item 66]
66. The light control film of any one of items 47-65, wherein the absorbing region comprises a polyelectrolyte.
[Item 67]
A method of manufacturing a light control film, comprising:
Providing a microstructured film comprising a plurality of light transmissive regions interleaved with channels, said microstructured film being defined by top and sidewalls of said light transmissive regions and bottom surfaces of said channels. providing a microstructured film having a surface;
applying one or more layers of light absorbing cladding material to the surface, each layer having a concentration of light absorbing particles;
applying a layer of light absorbing core material having a first concentration C1 of light absorbing particles on said one or more layers of light absorbing cladding material ;
applying on said layer of light absorbing core material one or more additional layers of light absorbing cladding material, each additional layer having a concentration of light absorbing particles;
at least a portion of the one or more layers of light absorbing cladding material, the layer of light absorbing core material, and the additional one or more layers of light absorbing cladding material, the top surface of the light transmissive region and the bottom surface of the channel; removing from
including
the concentration of light absorbing material in each of the one or more layers of light absorbing cladding material and each of the additional one or more layers of light absorbing cladding material is less than C1;
A method of making a light control film.
[Item 68]
A method of manufacturing a light control film, comprising:
Providing a microstructured film comprising a plurality of light transmissive regions interleaved with channels, said microstructured film being defined by top and sidewalls of said light transmissive regions and bottom surfaces of said channels. providing a microstructured film having a surface;
applying one or more layers of light absorbing cladding material to the surface, each layer having an extinction coefficient;
applying a layer of light absorbing core material having a first extinction coefficient k1 over the one or more layers of light absorbing cladding material ;
applying on said layer of light absorbing core material one or more additional layers of light absorbing cladding material, each additional layer having an extinction coefficient;
at least a portion of the one or more layers of light-absorbing cladding material, the layer of light-absorbing core material, and the additional one or more layers of light-absorbing cladding material; removing from the bottom surface;
including
the extinction coefficient of each of the one or more layers of light absorbing cladding material and each of the additional one or more layers of light absorbing cladding material is less than k 1 ;
A method of making a light control film.
[Item 69]
applying the one or more layers of light absorbing cladding material; applying the layer of light absorbing core material; and applying the one or more additional layers of light absorbing cladding material; 69. Method according to item 67 or 68, comprising layer-by-layer assembly.
[Item 70]
70. The method of any one of items 67-69, further comprising filling the channels with an organic polymeric material.

Claims (15)

光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、光吸収材料の第２の濃度Ｃ２を有するクラッド層の間に挟まれた、前記光吸収材料の第１の濃度Ｃ１を有するコアを含み、Ｃ２＜Ｃ１であり、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、
光制御フィルム。 A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between said light input surface and said light output surface, said absorptive regions sandwiched between cladding layers having a second concentration C2 of light absorbing material; alternating transmissive and absorptive regions comprising a core having a first concentration C 1 of said light absorbing material, wherein C 2 < C 1 , said core having an aspect ratio of at least 20;
comprising
light control film. 前記光吸収材料が、光吸収粒子を含む、請求項１に記載の光制御フィルム。 3. The light control film of claim 1, wherein the light absorbing material comprises light absorbing particles. 前記光吸収材料が、カーボンブラック粒子を含む、請求項１または２に記載の光制御フィルム。 3. A light control film according to claim 1 or 2 , wherein the light absorbing material comprises carbon black particles. 前記コアが、３０重量％～１００重量％の光吸収材料を含み、前記クラッド層が、０．５重量％～５０重量％の光吸収材料を含む、請求項１～３のいずれか一項に記載の光制御フィルム。 4. Any one of claims 1-3 , wherein the core comprises 30% to 100% by weight of light absorbing material and the clad layer comprises 0.5% to 50% by weight of light absorbing material. A light control film as described. 光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、第２の吸光係数ｋ２を有するクラッド層の間に挟まれた、第１の吸光係数ｋ１を有するコアを含み、ｋ２＜ｋ１であり、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、光制御フィルム。 A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between the light input surface and the light output surface, the absorptive regions sandwiched between cladding layers having a second extinction coefficient k2; alternating transmissive and absorptive regions comprising a core having a first extinction coefficient k 1 , where k 2 <k 1 , said core having an aspect ratio of at least 20;
A light control film. ｋ１が、０．２～０．４であり、ｋ２が、０．００５～０．１５である、請求項５に記載の光制御フィルム。 6. The light control film of claim 5 , wherein k 1 is between 0.2 and 0.4 and k 2 is between 0.005 and 0.15. 光制御フィルムであって、
光入力面、及び前記光入力面の反対側の光出力面と、
前記光入力面と前記光出力面との間に配置された交互の透過領域及び吸収領域であって、前記吸収領域が、光吸収粒子及び非光吸収性希釈剤を含むクラッド層の間に挟まれた、光吸収粒子を含むコアを含み、前記コアが、少なくとも２０のアスペクト比を有する、交互の透過領域及び吸収領域と、
を備える、
光制御フィルム。 A light control film,
a light input surface and a light output surface opposite said light input surface;
alternating transmissive and absorptive regions disposed between said light input surface and said light output surface, said absorptive regions sandwiched between cladding layers comprising light absorbing particles and a non-light absorbing diluent. alternating transmissive and absorptive regions comprising a core comprising light absorbing particles, said core having an aspect ratio of at least 20;
comprising
light control film. 前記コア及び前記クラッド層が、有機光吸収粒子を含む、請求項５～７のいずれか一項に記載の光制御フィルム。 The light control film of any one of claims 5-7, wherein the core and the cladding layers comprise organic light absorbing particles. 前記クラッド層が、光吸収粒子、非光吸収性希釈剤、及び有機ポリマー材料を含む、請求項１～８のいずれか一項に記載の光制御フィルム。 The light control film of any one of claims 1-8 , wherein the cladding layer comprises light absorbing particles, a non-light absorbing diluent, and an organic polymeric material. 前記光制御フィルムが、０度の視野角において少なくとも７５％の相対透過率を有する、請求項１～９のいずれか一項に記載の光制御フィルム。 A light control film according to any preceding claim, wherein the light control film has a relative transmittance of at least 75% at a viewing angle of 0 degrees. 前記光制御フィルムが、３５度～８０度の視野角において５％以下の平均相対透過率を有する、請求項１～１０のいずれか一項に記載の光制御フィルム。 11. The light control film of any one of claims 1-10 , wherein the light control film has an average relative transmittance of 5% or less at viewing angles of 35 degrees to 80 degrees. 前記クラッド層上に配置された第２のクラッド層を更に備える、請求項１～１１のいずれか一項に記載の光制御フィルム。 12. The light control film of any one of claims 1-11 , further comprising a second cladding layer disposed on the cladding layer. 光制御フィルムを製造する方法であって、
チャネルと交互に配置された複数の光透過領域を備えた微細構造フィルムを提供することであって、前記微細構造フィルムが、前記光透過領域の上面及び側壁、並びに前記チャネルの底面によって画定される表面を有する、微細構造フィルムを提供することと、
各層が光吸収粒子の濃度を有する、光吸収クラッド材料の１つ以上の層を前記表面に適用することと、
光吸収クラッド材料の前記１つ以上の層上に、光吸収粒子の第１の濃度Ｃ１を有する光吸収コア材料の層を適用することと、
光吸収コア材料の前記層上に、各追加の層が光吸収粒子の濃度を有する、光吸収クラッド材料の追加の１つ以上の層を適用することと、
前記１つ以上の層光吸収クラッド材料、光吸収コア材料の前記層、及び光吸収クラッド材料の前記追加の１つ以上の層の少なくとも一部分を、前記光透過領域の前記上面及び前記チャネルの底面から除去することと、
を含み、
光吸収クラッド材料の前記１つ以上の層のそれぞれ及び光吸収クラッド材料の前記追加の１つ以上の層のそれぞれにおける光吸収材料の前記濃度が、Ｃ１未満である、
光制御フィルムを製造する方法。 A method of manufacturing a light control film, comprising:
Providing a microstructured film comprising a plurality of light transmissive regions interleaved with channels, said microstructured film being defined by top and sidewalls of said light transmissive regions and bottom surfaces of said channels. providing a microstructured film having a surface;
applying one or more layers of light absorbing cladding material to the surface, each layer having a concentration of light absorbing particles;
applying a layer of light absorbing core material having a first concentration C1 of light absorbing particles on said one or more layers of light absorbing cladding material;
applying on said layer of light absorbing core material one or more additional layers of light absorbing cladding material, each additional layer having a concentration of light absorbing particles;
at least a portion of the one or more layers of light absorbing cladding material, the layer of light absorbing core material, and the additional one or more layers of light absorbing cladding material, the top surface of the light transmissive region and the bottom surface of the channel; removing from
including
the concentration of light absorbing material in each of the one or more layers of light absorbing cladding material and each of the additional one or more layers of light absorbing cladding material is less than C1;
A method of making a light control film. 光制御フィルムを製造する方法であって、
チャネルと交互に配置された複数の光透過領域を備えた微細構造フィルムを提供することであって、前記微細構造フィルムが、前記光透過領域の上面及び側壁、並びに前記チャネルの底面によって画定される表面を有する、微細構造フィルムを提供することと、
各層が吸光係数を有する、光吸収クラッド材料の１つ以上の層を前記表面に適用することと、
光吸収クラッド材料の前記１つ以上の層上に、第１の吸光係数ｋ１を有する光吸収コア材料の層を適用することと、
光吸収コア材料の前記層上に、各追加の層が吸光係数を有する、光吸収クラッド材料の追加の１つ以上の層を適用することと、
光吸収クラッド材料の前記１つ以上の層、光吸収コア材料の前記層、及び光吸収クラッド材料の前記追加の１つ以上の層の少なくとも一部分を、前記光透過領域の前記上面及び前記チャネルの底面から除去することと、
を含み、
光吸収クラッド材料の前記１つ以上の層のそれぞれ及び光吸収クラッド材料の前記追加の１つ以上の層のそれぞれの前記吸光係数が、ｋ１未満である、
光制御フィルムを製造する方法。 A method of manufacturing a light control film, comprising:
Providing a microstructured film comprising a plurality of light transmissive regions interleaved with channels, said microstructured film being defined by top and sidewalls of said light transmissive regions and bottom surfaces of said channels. providing a microstructured film having a surface;
applying one or more layers of light absorbing cladding material to the surface, each layer having an extinction coefficient;
applying a layer of light absorbing core material having a first extinction coefficient k1 over the one or more layers of light absorbing cladding material;
applying on said layer of light absorbing core material one or more additional layers of light absorbing cladding material, each additional layer having an extinction coefficient;
at least a portion of the one or more layers of light-absorbing cladding material, the layer of light-absorbing core material, and the additional one or more layers of light-absorbing cladding material; removing from the bottom surface;
including
the extinction coefficient of each of the one or more layers of light absorbing cladding material and each of the additional one or more layers of light absorbing cladding material is less than k 1 ;
A method of making a light control film. 光吸収クラッド材料の前記１つ以上の層を適用することと、光吸収コア材料の前記層を適用することと、光吸収クラッド材料の前記１つ以上の追加の層を適用することとが、レイヤー・バイ・レイヤーアセンブリを含む、請求項１３又は１４に記載の方法。 applying the one or more layers of light absorbing cladding material; applying the layer of light absorbing core material; and applying the one or more additional layers of light absorbing cladding material; 15. A method according to claim 13 or 14 , comprising layer-by-layer assembly.
JP2021505416A 2018-08-01 2019-07-30 High transmittance optical control film Pending JP2021533407A (en)

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