公开(公告)号：US20210294096A1

公开(公告)日：2021-09-23

申请号：US17339059

申请日：2021-06-04

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Mai YOSHIMURA ,  Masashi KAWASHITA

IPC: G02B27/00 ,  G02B5/18

Abstract: A display with a plurality of display elements each composed of an uneven layer having an uneven structure and a multilayer film layer provided on the uneven structure. A pattern formed by convexities can be divided into shape elements each arranged in each of a plurality of virtual rectangles, when viewed from a direction facing the uneven layer, and each of the shape elements arranged in each of the virtual rectangles is inscribed in the rectangle in which the shape element is arranged. The plurality of virtual rectangles each have sides along a first direction and sides along a second direction orthogonal to the first direction, and a length of the side along the first direction is less than or equal to a sub wavelength.

公开(公告)号：US20200284959A1

公开(公告)日：2020-09-10

申请号：US16884464

申请日：2020-05-27

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Hidemitsu HAKII ,  Masashi KAWASHITA ,  Yukari ODA ,  Tomoya UCHIDA

IPC: G02B5/28 ,  G02B5/00 ,  G02B1/18 ,  G02B5/30

Abstract: A display is provided with a periodic structure that is dielectric and includes a support and a plurality of periodic elements. A plurality of periodic elements is arranged on a reference plane in a two-dimensional lattice form having a sub-wavelength period and are either convexities projected or concavities recessed in the reference plane. A metal layer is disposed on a surface of the periodic structure. The surface corresponds to a plane including a region of the reference plane surrounding the individual periodic elements and surfaces of the periodic elements. The metal layer's profile conforms to a surface profile of the periodic structure. The plurality of periodic elements have an interval therebetween in a first direction in which the plurality of periodic elements are arranged in a two-dimensional lattice form. The interval is different from an interval between the periodic elements in a second direction intersecting the first direction.

公开(公告)号：US20190143736A1

公开(公告)日：2019-05-16

申请号：US16228739

申请日：2018-12-20

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masashi KAWASHITA ,  Hidemitsu HAKII

IPC: B42D25/328 ,  G02B5/18 ,  G02B5/28 ,  H01L31/0216 ,  B42D25/373 ,  B42D25/45 ,  G09F19/12

Abstract: An optical device comprises a support having a reference plane, and a dielectric periodic structure including a plurality of periodic elements which are arranged, on the reference plane, in a two-dimensional lattice having a sub-wavelength spacing and are either projections projecting from the reference plane or recesses depressed from the reference plane. The optical device further includes a metal layer, which is positioned on a surface of the periodic structure including a region of the reference plane surrounding the individual periodic elements and the surfaces of the periodic elements and which has a shape that follows the surface profile of the periodic structure.

公开(公告)号：US20210215864A1

公开(公告)日：2021-07-15

申请号：US17219343

申请日：2021-03-31

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masashi KAWASHITA

IPC: G02B5/28 ,  B32B7/12 ,  B32B3/30 ,  B32B7/023 ,  B32B27/36

Abstract: A color production structure includes an uneven structure layer and a multilayer film layer. The uneven structure layer has an uneven structure on a surface thereof and including a plurality of uneven elements. The multilayer film layer is a laminated film on the uneven structure and has a surface shaped to conform to the uneven structure, the multilayer film layer configured such that reflected light enhanced by interference emerges from the multilayer film layer. Each of the uneven elements has a longitudinal width and a lateral width in plan view along a thickness direction of the uneven structure layer, having a value within a range from 10 μm to 100 μm inclusive. Each of the uneven elements has a dimension in the thickness direction of the uneven structure layer, the dimension of each uneven element continuously increasing from the peripheral edge to the center thereof in the plan view.

公开(公告)号：US20210382215A1

公开(公告)日：2021-12-09

申请号：US17406925

申请日：2021-08-19

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masashi KAWASHITA ,  Yukari ODA ,  Yuki YASU ,  Yoshiko ISHIMARU

IPC: G02B5/28 ,  G02B27/12 ,  H01L51/52

Abstract: A wavelength selection filter includes a first high refractive index section with a thickness T1, a second high refractive index section with a thickness T2, a high refractive index layer with a refractive index n1, a projection-depression structure layer with a refractive index n2, a filling layer with a refractive index n3, a first high refractive index section with an area ratio R1, and a second high refractive index section with an area ratio R2. With n1>n2, n1>n3, and R1+R2>1, the value of T1×{n1×R1+n2×(1−R1)} is a first parameter, the value of T2×{n1×R2+n3×(1−R2)} is a second parameter, and the ratio of the second parameter to the first parameter is 0.7 or more and 1.3 or less.

公开(公告)号：US20190333418A1

公开(公告)日：2019-10-31

申请号：US16508045

申请日：2019-07-10

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masashi KAWASHITA

IPC: G09F3/02 ,  B42D25/29 ,  B42D25/328 ,  G02B5/18 ,  G03F7/20

Abstract: A display element including a layer with a protrusion-recess structure and a multilayer film layer disposed on the protrusion-recess structure and with a surface shape following the protrusion-recess structure. A pattern formed by the protrusion includes a plurality of shape elements when the protrusion-recess structure is viewed in a direction perpendicular to the surface. Each shape element has a length extending in one extending direction, larger than a length in a width direction perpendicular to the extending direction. The length in the width direction is equal to or less than a sub-wavelength. A standard deviation of the length in the extending direction is larger than a standard deviation of the length in the width direction. The display elements include a first display element and a second display element. The extending directions of the first display element and the second display element are different from each other.

公开(公告)号：US20180143358A1

公开(公告)日：2018-05-24

申请号：US15860532

申请日：2018-01-02

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Masashi KAWASHITA ,  Mai OOKI

IPC: G02B5/18 ,  B32B3/30 ,  B32B38/00 ,  B32B7/02

CPC classification number: G02B5/1861 ,  B32B3/30 ,  B32B7/02 ,  B32B38/0012 ,  B32B2307/402 ,  B32B2307/404 ,  B32B2307/406 ,  B32B2307/416 ,  B32B2307/418 ,  B32B2307/732 ,  B32B2551/00 ,  G02B5/18 ,  G02B5/1852

Abstract: A color developing structure capable of achieving multi-hued color through a simple process, and a method of producing the same are provided. In the color developing structure formed on a surface of a base material: the color developing structure has a rectangular shape in plan view, and is formed of a concavo-convex structure having a plurality of convexities with different heights and a laminated film including a plurality of layers laminated on the concavo-convex structure; the plurality of layers adjoining in a lamination direction are made of materials that transmit light of the same wavelength band and have different refractive indices with respect to light of the wavelength band; and the plurality of layers have about the same thickness.