# US 2023/0399546 A1 · Method of manufacturing ultra-thin antireflection sticker and ultra-thin antireflection sticker

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- Number: US 2023/0399546 A1
- Document ID: US20230399546A1
- Status: Published application
- Kind: A1
- Application number: 18/208,301
- Filed: 2023-06-11
- Published: 2023-12-14
- Earliest claimed: 2022-06-13
- Assignees: The Industry & Academic Cooperpation In Chungnam National University (Iac)
- Applicants: The Industry & Academic Cooperpation In Chungnam National University (Iac)
- Inventors: Seong Min KANG; Ji Seong CHOI
- Web page: https://patentgrep.com/patent/US20230399546A1

## CPC

- C09J 7/255: {Polyesters}
- C09J 7/00: Adhesives in the form of films or foils
- G02B 1/118: having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
- G09F 3/08: Fastening or securing by means not forming part of the material of the label itself
- H10F 77/315: {the coatings being antireflective or having enhancing optical properties}
- H10K 30/87: Light-trapping means
- C09J 2301/31: the adhesive effect being based on a Gecko structure
- C09J 2427/006: in the substrate
- C09J 2483/00: Presence of polysiloxane
- H10K 30/82: Transparent electrodes, e.g. indium tin oxide [ITO] electrodes
- H10K 39/10: Organic photovoltaic [PV] modules; Arrays of single organic PV cells
- H10K 77/111: {Flexible substrates}
- H10K 85/50: Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A method of manufacturing a monolayer-structured ultra-thin antireflection sticker through a soft lithography process and an ultra-thin antireflection sticker, includes: a master mold manufacturing step in which a master mold having a plurality of semi-spherical mold structures on an upper surface thereof is manufactured; a sticker material coating step in which a sticker material is coated onto the upper surface of the master mold; a cured film covering step in which a cured film is disposed to cover an upper surface of the sticker material; a curing step in which the sticker material is cured; a cured film removal step in which the cured film is removed from the sticker material; and a sticker peeling step in which the cured sticker material is peeled off the master mold, the peeled-off sticker material forming a monolayer-structured ultra-thin antireflection sticker having a plurality of antireflective structures on an upper surface thereof.

## Claims

### Claim 1

A method of manufacturing an ultra-thin antireflection sticker, comprising:
a master mold manufacturing step in which a master mold having a plurality of semi-spherical mold structures on an upper surface thereof is manufactured;
a sticker material coating step in which a sticker material is coated onto the upper surface of the master mold;
a cured film covering step in which a cured film is disposed to cover an upper surface of the sticker material;
a curing step in which the sticker material is cured;
a cured film removal step in which the cured film is removed from the sticker material; and
a sticker peeling step in which the cured sticker material is peeled off the master mold, the peeled-off sticker material forming a monolayer-structured ultra-thin antireflection sticker having a plurality of antireflective structures on an upper surface thereof.

### Claim 2 (depends on 1)

The method of manufacturing an ultra-thin antireflection sticker according to claim 1, wherein, in the sticker material coating step, the sticker material is formed of perfluorinated polyether ((PFPE).

### Claim 3 (depends on 1)

The method of manufacturing an ultra-thin antireflection sticker according to claim 1, wherein, in the cured film covering step, the cured film is formed of a polyethylene terephthalate (PET) material.

### Claim 4 (depends on 1)

The method of manufacturing an ultra-thin antireflection sticker according to claim 1, wherein the cured film covering step comprises:
a covering step in which the cured film is disposed to cover an entire area of the upper surface of the sticker material; and
a thickness adjustment step in which the cured film presses the sticker material to adjust the thickness of the sticker material.

### Claim 5 (depends on 1)

The method of manufacturing an ultra-thin antireflection sticker according to claim 1, wherein, in the sticker peeling step, each of the antireflection structures formed on the upper surface of the ultra-thin antireflection sticker forms a semi-spherical groove shape.

### Claim 6

An ultra-thin antireflection sticker comprising:
a base having a flat plate shape; and
a plurality of antireflection structures each protruding from an upper surface of the base to form a semispherical groove shape,
wherein the base and the antireflection structures are integrally formed with each other and are formed of the same material.