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：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.