# US 2019/0170906 A1 · Antireflective lamination film, method of forming antireflective lamination film, and eyeglass type display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170906 A1 - Document ID: US20190170906A1 - Status: Published application - Kind: A1 - Application number: 16/196,523 - Filed: 2018-11-20 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Shin-Etsu Chemical Co., Ltd. - Applicants: Shin-Etsu Chemical Co., Ltd. - Inventors: Jun HATAKEYAMA - Web page: https://patentgrep.com/patent/US20190170906A1 ## CPC - G02B 1/111: using layers comprising organic materials - G02B 1/118: having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G02B 2207/101: Nanooptics - G02B 2207/107: Porous materials, e.g. for reducing the refractive index - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A transparent antireflective lamination film including: a first film composed of a first material having a first refractive index; a second film having a refractive index lower than the first film laminated on the first film, including a pattern composed of a second material having a second refractive index lower than the first refractive index formed in a film composed of the first material; and at least one layer of film laminated on the second film, at least one layer of film including: a film including the pattern composed of the second material having larger area than in the second film, and/or a film including a pattern composed of a material having a refractive index lower than the second refractive index, wherein the refractive index of each film is decreasing toward the upper side from the first film in the antireflective lamination film. ## Claims ### Claim 1 A transparent antireflective lamination film, comprising: a first film composed of a first material having a first refractive index; a second film having a refractive index lower than that of the first film laminated on the first film, wherein the second film includes: a pattern composed of a second material having a second refractive index lower than the first refractive index formed in a film composed of the first material; and at least one layer of film laminated on the second film, the at least one layer of film including: a film including the pattern composed of the second material having larger area than in the second film, and/or a film including a pattern composed of a material having a refractive index lower than the second refractive index, wherein the refractive index of each film is successively decreasing toward the upper side from the first film in the antireflective lamination film. ### Claim 2 (depends on 1) The antireflective lamination film according to claim 1, wherein the pattern has a pattern size of 200 nm or less. ### Claim 3 (depends on 1) The antireflective lamination film according to claim 1, wherein the refractive index of the first film is 1.65 or more, and the refractive index of the film that has the lowest refractive index is 1.35 or less with respect to visible light having a wavelength of 590 to 610 nm. ### Claim 4 (depends on 2) The antireflective lamination film according to claim 2, wherein the refractive index of the first film is 1.65 or more, and the refractive index of the film that has the lowest refractive index is 1.35 or less with respect to visible light having a wavelength of 590 to 610 nm. ### Claim 5 (depends on 1) The antireflective lamination film according to claim 1, wherein the transmittance of visible light having a wavelength of 400 nm to 800 nm is 80% or more. ### Claim 6 (depends on 2) The antireflective lamination film according to claim 2, wherein the transmittance of visible light having a wavelength of 400 nm to 800 nm is 80% or more. ### Claim 7 (depends on 3) The antireflective lamination film according to claim 3, wherein the transmittance of visible light having a wavelength of 400 nm to 800 nm is 80% or more. ### Claim 8 (depends on 4) The antireflective lamination film according to claim 4, wherein the transmittance of visible light having a wavelength of 400 nm to 800 nm is 80% or more. ### Claim 9 (depends on 1) The antireflective lamination film according to claim 1, wherein at least one of the first material and the second material is a photoresist material. ### Claim 10 (depends on 2) The antireflective lamination film according to claim 2, wherein at least one of the first material and the second material is a photoresist material. ### Claim 11 (depends on 1) The antireflective lamination film according to claim 1, wherein at least one of the first material and the second material is a non-photosensitive material. ### Claim 12 (depends on 2) The antireflective lamination film according to claim 2, wherein at least one of the first material and the second material is a non-photosensitive material. ### Claim 13 (depends on 1) A method of forming the antireflective lamination film according to claim 1, wherein the pattern is formed by photolithography. ### Claim 14 (depends on 2) A method of forming the antireflective lamination film according to claim 2, wherein the pattern is formed by photolithography. ### Claim 15 (depends on 13) The method of forming an antireflective lamination film according to claim 13, wherein the pattern is formed by photolithography and etching. ### Claim 16 (depends on 14) The method of forming an antireflective lamination film according to claim 14, wherein the pattern is formed by photolithography and etching. ### Claim 17 (depends on 1) A method of forming the antireflective lamination film according to claim 1, wherein the pattern is formed by an imprint method. ### Claim 18 (depends on 2) A method of forming the antireflective lamination film according to claim 2, wherein the pattern is formed by an imprint method. ### Claim 19 (depends on 1) An eyeglass type display, comprising: a self-emitting display selected from the group consisting of liquid crystal, organic EL, and micro LED installed on a substrate at the side of an eyeball of the eyeglass type display, and a convex lens for focusing installed on the side of an eyeball of the self-emitting display, wherein the antireflective lamination film according to claim 1 is formed on a surface of the convex lens. ### Claim 20 (depends on 2) An eyeglass type display, comprising: a self-emitting display selected from the group consisting of liquid crystal, organic EL, and micro LED installed on a substrate at the side of an eyeball of the eyeglass type display, and a convex lens for focusing installed on the side of an eyeball of the self-emitting display, wherein the antireflective lamination film according to claim 2 is formed on a surface of the convex lens.