Title:
HIGH-BRIGHTNESS SECURITY FILM
Document Type and Number:
WIPO Patent Application WO/2023/101289
Kind Code:
A1
Abstract:
The present invention relates to a high-brightness security film in which light transmittance is improved so as to improve brightness and clarity, wherein, according to one aspect of the present invention, provided is a security film comprising: a base layer formed of a light-transmitting material; and a pattern layer comprising: light transmitting portions which are formed of a light-transmitting material through which light incident from the base layer is transmitted, and which are spaced apart at predetermined intervals; and shielding portions which are formed between the spaced-apart light transmitting portions and comprise a resin and shielding particles dispersed in the resin so as to block light incident through the base layer, wherein the pattern layer limits a viewing angle by transmitting some of the light incident from the base layer, wherein at least a portion of a surface of a light-incident surface side of the shielding portions is formed to be round so that light reflected from the surface of the light-incident surface side of the shielding portions is reflected toward the light transmitting portions.
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Inventors:
LEE JOON YONG (KR)
BAE CHAN YEOL (KR)
BAE CHAN YEOL (KR)
Application Number:
PCT/KR2022/018395
Publication Date:
June 08, 2023
Filing Date:
November 21, 2022
Export Citation:
Assignee:
MIRAENANOTECH CO LTD (KR)
International Classes:
G02B5/30
Foreign References:
| KR20200004741A | 2020-01-14 | |||
| KR100783645B1 | 2007-12-07 | |||
| JP2012032749A | 2012-02-16 | |||
| US20100214506A1 | 2010-08-26 | |||
| KR20080055335A | 2008-06-19 |
Attorney, Agent or Firm:
ERUUM & LEEON INTELLECTUAL PROPERTY LAW FIRM (KR)
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