# US 2019/0377112 A1 · Transparent film having improved lighting performance, and manufacturing method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0377112 A1 - Document ID: US20190377112A1 - Status: Published application - Kind: A1 - Application number: 16/463,518 - Filed: 2016-11-25 - Published: 2019-12-12 - Earliest claimed: 2016-11-25 - Assignees: Diypro Co., Ltd. - Applicants: Diypro Co., Ltd. - Inventors: Myung Joong KIM - Web page: https://patentgrep.com/patent/US20190377112A1 ## CPC - G02B 5/0231: {the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045)} - G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation} - C08J 5/08: glass fibres - C08L 33/12: Homopolymers or copolymers of methyl methacrylate - C08L 67/00: Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers - C09J 7/20: characterised by their carriers - C09J 7/22: Plastics; Metallised plastics - G02B 1/04: made of organic materials, e.g. plastics (G02B1/08 takes precedence) - C09J 2301/122: the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape - C09J 2301/204: the adhesive coating being discontinuous - G02B 1/043: {Contact lenses} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - 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) ## Abstract A transparent film having improved lighting performance, and a manufacturing method therefor are disclosed. According to a preferable embodiment of the present invention, the transparent film having improved lighting performance has a plurality of transmission and refraction parts formed at predetermined intervals on the surface of a support film, a cross-section of each of the transmission and refraction parts comprises a flat part, which has a predetermined height from the planar surface of the support film, and an inclined part extended from one end of the flat part to the plane of the support film, and the flat part is bonded to a glass window by an adhesive. Sunlight directly entering through the glass window is refracted and then is directed toward the bottom surface or is reflected at the inclined part and then is directed toward the ceiling, thereby entering deeply into an indoor place, and thus lighting effects are improved. In addition, since light entering perpendicularly to the flat part is transmitted in the same direction without being refracted, an indoor person can observe an outside landscape or an outside object as is, and thus the frustration of being incapable of observing the outside when using a window blind has been solved. ## Claims ### Claim 1 A transparent film comprising: a support film; and a plurality of transmission and refraction parts formed on one plane of the support film and disposed at a predetermined interval to adhere to a glass window, wherein a cross-section of each of the transmission and refraction parts comprises: a flat part having a predetermined height from the plane of the support film; and an inclined part extending from the flat part to the plane of the support film, wherein the flat part adheres to the glass window by an adhesive. ### Claim 2 (depends on 1) The transparent film of claim 1, wherein the inclined part extends from one end of the flat part to the plane of the support film. ### Claim 3 (depends on 2) The transparent film of claim 2, wherein the inclined parts of the transmission and refraction parts are formed in the same direction. ### Claim 4 (depends on 2) The transparent film of claim 2, wherein the interval between the plurality of transmission and refraction parts is 50% of a length of the flat part. ### Claim 5 A transparent film, in which a plurality of flat parts and inclined parts are alternately formed on one surface thereof, wherein the plurality of inclined parts extend from one end of the flat part to the inside of the transparent film and formed in the same direction, and the flat part adheres to a glass window by an adhesive. ### Claim 6 (depends on 5) The transparent film of claim 5, wherein projected lengths of the inclined parts and the flat parts are the same. ### Claim 7 (depends on 1) The transparent film of claim 1, wherein an angle between each of the inclined parts and the plane of the support film ranges of 30 degrees to 60 degrees. ### Claim 8 (depends on 1) The transparent film of claim 1, wherein the adhesive is applied to the flat part. ### Claim 9 (depends on 8) The transparent film of claim 8, further comprising an adhesive transfer film which has one surface coated with the adhesive, of which the surface coated with the adhesive adheres to the flat part, and by which the adhesive is transferred to the flat part when being detached from the flat part. ### Claim 10 (depends on 1) The transparent film of claim 1, wherein the support film is a polyester film, and the plurality of transmission and refraction parts are made of a UV-curable resin. ### Claim 11 (depends on 1) The transparent film of claim 1, further comprising an adhesion film comprising: a transparent support member preventing yellowing of the transmission and refraction parts; a first adhesion layer formed on one surface of the transparent support member; a second adhesion layer formed on the other surface of the transparent support member; and a protection film protecting the first adhesion layer, wherein the second adhesion layer adheres to the flat part, and the first adhesion layer adheres to the glass window by removing the protection film. ### Claim 12 A method for manufacturing a transparent film, the method comprising: (a) applying a ultraviolet (UV)-curable resin to a support film; (b) forming a plurality of transmission and refraction parts, which are disposed on the UV-curable resin at a predetermined interval by using a roller, on which patterns of flat parts and inclined parts are formed, to adhere a glass window; and (c) irradiating UV rays onto the UV-curable resin to cure the UV-curable resin, wherein a cross-section of each of the plurality of transmission and refraction parts comprises a flat part having a predetermined height from a plane of the support film and an inclined part extending from the flat part to the plane of the support film, and the inclined parts provided in the plurality of transmission and refraction parts extend from one cross-section of two cross-sections of the flat part to the plane of the support film and are formed in the same direction. ### Claim 13 (depends on 12) The method of claim 12, wherein the interval between the plurality of transmission and refraction parts is 50% of a length of the flat part. ### Claim 14 A method for manufacturing a transparent film, the method comprising: (a) heating a polymethylmethacrylate (PMMA) film; (b) performing processing to alternately form a plurality of flat parts and inclined parts on a plane of the heated PMMA film by using a roller on which patterns of the flat part and the inclined part are formed; and (c) cooling the PMMA film on which the plurality of flat parts and inclined parts are alternately formed on the plane to cure the PMMA film, wherein the plurality of inclined parts extend from one cross-section of two cross-sections of the flat part to the inside of the PMMA film and are formed in the same direction. ### Claim 15 (depends on 12) The method of claim 12, wherein projected lengths of the inclined parts and the flat parts are the same. ### Claim 16 (depends on 12) The method of claim 12, wherein an angle between each of the inclined parts and the plane of the support film ranges of 30 degrees to 60 degrees. ### Claim 17 (depends on 12) The method of claim 12, further comprising allowing an adhesive transfer film, which has one surface coated with the adhesive, of which the surface coated with the adhesive adheres to the flat part, and by which the adhesive is transferred to the flat part when being detached from the flat part, to adhere to the flat part. ### Claim 18 (depends on 12) The method of claims 12, further comprising allowing a second adhesion layer of an adhesion film, which comprises: a transparent support member preventing yellowing of the transmission and refraction parts; a first adhesion layer formed on one surface of the transparent support member; the second adhesion layer formed on the other surface of the transparent support member; and a protection film protecting the first adhesion layer, to adhere to the flat part, wherein the first adhesion layer adheres to a glass window by removing the protection film.