公开(公告)号：US20230031501A1

公开(公告)日：2023-02-02

申请号：US17961788

申请日：2022-10-07

Applicant: TOPPAN INC.

Inventor： Keitaro SUGIHARA

IPC: G06K7/14 ,  B42D25/328

Abstract: A color display of an embodiment includes: an embossed layer; a high refractive index layer; and a protective layer, laminated in this order, wherein the high refractive index layer has a highest refractive index among these layers, the embossed layer includes a first region having a periodic structure with a period at least smaller than a center wavelength of visible light, a plurality of the first regions, each having a strip shape, are connected to each other at their longitudinal end sides, the first regions being offset from each other in a direction perpendicular to a longitudinal direction of the strip shape, as viewed via a display surface, and a periodic direction of the periodic structure is parallel to the longitudinal direction.

公开(公告)号：US20220215215A1

公开(公告)日：2022-07-07

申请号：US17699665

申请日：2022-03-21

Applicant: TOPPAN INC.

Inventor： Keitaro SUGIHARA ,  Akihito KAGOTANI

IPC: G06K19/06 ,  G02B5/20

Abstract: A forming mold has a surface in contact with a deposited film, a part or an entire part being a first wavy surface. A wave period of the first wavy surface is in a range of 250 nm or more and 500 nm or less. The deposited film conforms to the surface of the forming mold. The first wavy surface includes a plurality of rib surfaces, a plurality of groove surfaces, and a plurality of taper surfaces connecting the rib surfaces to the respective groove surfaces. The deposited film has a peak zone, a valley zone, and a transition zone. One of the peak zone, the valley zone, and the transition zone and another one of the peak zone, the valley zone, and the transition zone are different or has portions different in thickness and/or volume density.