Title:
Display board
Document Type and Number:
Japanese Patent JP6143063
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a display board free from degradation of display quality.SOLUTION: The display board includes: a light-transmissive substrate 18; a first halftone printing layer 13 formed on one surface 18a directed to the observer side, of the substrate 18; and a second halftone printing layer 14 formed on a surface of the first halftone printing layer 13. The first halftone printing layer 13 includes a first fixed-aperture ratio area 13a where an aperture ratio of dots is a prescribed value, a second fixed-aperture ratio area 13b where an aperture ratio of dots is another value other than the prescribed value, and a varying-aperture ratio area 13c where an aperture ratio of dots is gradually varied from the prescribed value to another value. The varying-aperture ratio area 13c is provided so as to connect the first fixed-aperture ratio area 13a and the second fixed-aperture ratio area 13b.
Inventors:
Yasuyuki Fujitsuka
Application Number:
JP2013040206A
Publication Date:
June 07, 2017
Filing Date:
March 01, 2013
Export Citation:
Assignee:
Nippon Seiki Co., Ltd.
International Classes:
G01D13/04; B60K35/00
Domestic Patent References:
| JP2011196975A | ||||
| JP2006071304A | ||||
| JP11268395A |