Display, transfer foil, adhesive label, and article having display

Patent metadata

Field	Value
Publication number	US-12111483-B2
Application number	US-202016939869-A
Country	US
Kind code	B2
Filing date	Jul 27, 2020
Priority date	Mar 1, 2018
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A display including a plurality of pixels each including a plurality of first subpixels and a plurality of second subpixels. In pixel, when illumination light is applied to the first subpixels from a normal direction, no diffracted light emerges from the plurality of first subpixels, or first diffracted light emerges from the plurality of first subpixels in a first angular range. When illumination light is applied to the second subpixels from the normal direction, no diffracted light emerges from the plurality of second subpixels, or second diffracted light having a wavelength equal to that of the first diffracted light emerges from the plurality of second subpixels in a second angular range wider than the first angular range, at an intensity lower than that of the first diffracted light; with the pixels configured to display a continuously changing image using the first diffracted light and the second diffracted light.

First claim

What is claimed is:

1. A display, comprising:
a plurality of pixels each including a wide-range display region and a narrow-range display region, wherein:
in each of the plurality of pixels,
the wide-range display region includes no diffraction grating, or includes a wide-range display diffraction grating formed of first crests or troughs curved in an arc shape and arrayed in a width direction,

the narrow-range display region includes no diffraction grating, or includes a narrow-range display diffraction grating formed of second crests or troughs curved in an arc shape and arrayed in a width direction, and
the arc formed by the first crests or troughs is a first arc or a part thereof having a first center angle, and the arc formed by the second crests or troughs is a second arc or a part thereof having a second center angle smaller than the first center angle; and
the plurality of pixels are configured to display a continuously changing image with diffracted light emerging from the wide-range display diffraction grating and diffracted light emerging from the narrow-range display diffraction grating.

2. A display, comprising:
a plurality of pixels each including a wide-range display region and a narrow-range display region, wherein
in each of the plurality of pixels,
the wide-range display region includes no diffraction grating, or includes a wide-range display diffraction grating formed of first crests or troughs curved in an arc shape and arrayed in a width direction,
the narrow-range display region includes no diffraction grating, or includes a narrow-range display diffraction grating formed of second crests or troughs curved in an arc shape and arrayed in a width direction,
the wide-range display region and the narrow-range display region have an equal dimension in a direction perpendicular to the width direction, and
a curvature of the arc formed by the second crests or troughs is smaller than a curvature of the arc formed by the first crests or troughs; and
the plurality of pixels are configured to display a continuously changing image with diffracted light emerging from the wide-range display diffraction grating and diffracted light emerging from the narrow-range display diffraction grating.

3. The display of claim 1 , wherein the wide-range display region and the narrow-range display region each include a plurality of subpixels arrayed in a direction perpendicular to the width direction.

4. The display of claim 1 , wherein the display is configured to display a full color image as the continuously changing image.

5. The display of claim 1 , wherein each of the plurality of pixels includes first to third sub-regions as the wide-range display region, and fourth to sixth sub-regions as the narrow-range display region, the first and fourth sub-regions displaying a first color, the second and fifth sub-regions displaying a second color different from the first color, the third and sixth sub-regions displaying a third color different from the first and second colors.

6. The display of claim 5 , wherein
in each of the plurality of pixels,
the first to sixth sub-regions each have a shape extended in a first direction intersecting an array direction of the first crests or troughs and an array direction of the second crests or troughs;
the first to third sub-regions are arrayed in a second direction intersecting the first direction;
the fourth to sixth sub-regions are arrayed in the second direction;
a column formed by the first to third sub-regions and a column formed by the fourth to sixth sub-regions are arrayed in the second direction;
two of the second, third, fifth and sixth sub-regions are interposed between the first and fourth sub-regions;
two of the first, third, fourth and sixth sub-regions are interposed between the second and fifth sub-regions; and
two of the first, second, fourth and fifth sub-regions are interposed between the third and sixth sub-regions.

7. The display of claim 5 , wherein
in each of the plurality of pixels,
the first to sixth sub-regions each have a shape extended in a first direction intersecting an array direction of the first crests or troughs and an array direction of the second crests or troughs;
the first and fourth sub-regions are arrayed in a second direction intersecting the first direction;
the second and fifth sub-regions are arrayed in the second direction;
the third and sixth sub-regions are arrayed in the second direction; and
a column formed by the first and fourth sub-regions, a column formed by the second and fifth sub-regions, and a column formed by the third and sixth sub-regions are arrayed in the second direction.

8. The display of claim 5 , wherein
in each of the plurality of pixels,
the first to sixth sub-regions each have a shape extended in a first direction intersecting an array direction of the first crests or troughs and an array direction of the second crests or troughs;
the first to third sub-regions are arrayed in a second direction intersecting the first direction;
the fourth to sixth sub-regions are arrayed in the second direction;
a column formed by the first to third sub-regions and a column formed by the fourth to sixth sub-regions are arrayed in the first direction;
the first and fourth sub-regions are adjacent to each other in the first direction;
the second and fifth sub-regions are adjacent to each other in the first direction; and
the third and sixth sub-regions are adjacent to each other in the first direction.

9. The display of claim 1 , comprising:
a relief structure forming layer having a relief structure on a surface thereof; and
a reflective layer covering the surface, wherein
the relief structure is provided with the wide-range display diffraction grating and the narrow-range display diffraction grating at an interface between the relief structure forming layer and the reflective layer, or on a surface of the reflective layer.

10. The display of claim 9 , wherein the reflective layer has visible light transmissivity.

11. A transfer foil comprising a transfer layer including the display of claim 1 , and a support separably supporting the transfer layer.

12. An adhesive label comprising the display of claim 1 , and an adhesive layer provided to one major surface of the display.

13. An article having a display, comprising the display of claim 1 , and an article supporting the display.

14. The article having a display of claim 13 , wherein the article has an elongated shape, the display has a center which is distanced from a plane passing through a center of the article and perpendicular to a length direction of the article, and a line segment extending from the center of the display and equally dividing an angular range of diffracted light emerging from the wide-range display diffraction grating is tilted with respect to the plane.

15. The article having a display of claim 13 , wherein the article includes a print pattern, the print pattern presents characters, the display has a center which is distanced from a plane passing through a center of the article and perpendicular to a width direction of the characters, and a line segment extending from the center of the display and equally dividing an angular range of diffracted light emerging from the wide-range display diffraction grating is tilted with respect to the plane.

Assignees

• Toppan Printing Co Ltd

Inventors

• Masunaga Yuko
• Nagano Akira
• Kamata Yasumasa
• Honma Hideaki

Classifications

• G03H1/30

  discrete holograms only · CPC title

• G03H1/2202

  Reconstruction geometries or arrangements · CPC title

• G03H1/0244

  Surface relief holograms (replicating hologram without interference recording G03H1/0276) · CPC title

• G03H2001/2242

  Multiple viewing windows · CPC title

• G03H1/265

  Angle multiplexing; Multichannel holograms (G03H1/268 takes precedence) · CPC title