JP2020530591A - 回折格子導光板用モールド基材の製造方法および回折格子導光板の製造方法 - Google Patents
回折格子導光板用モールド基材の製造方法および回折格子導光板の製造方法 Download PDFInfo
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Classifications
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32623—Mechanical discharge control means
- H01J37/32651—Shields, e.g. dark space shields, Faraday shields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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- B29D11/00663—Production of light guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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- B29D11/0073—Optical laminates
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- G02B5/1857—Manufacturing methods using exposure or etching means, e.g. holography, photolithography, exposure to electron or ion beams
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/321—Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0075—Light guides, optical cables
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
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- H01J2237/3341—Reactive etching
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Power Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
前記パターニングステップにおけるエッチング率は、前記傾斜面の上部領域から下部領域へ減少後に反転して増加し、前記第1傾斜パターン部は、深さ勾配を有する傾斜溝パターンを含み、前記第2傾斜パターン部は、0nm〜50nmの深さ偏差を有する傾斜溝パターンを含むものである回折格子導光板用モールド基材の製造方法を提供する。
前記パターニングステップにおけるエッチング率は、前記傾斜面の上部領域から下部領域へ減少後に反転して増加し、前記第1傾斜パターン部は、深さ勾配を有する傾斜溝パターンを含み、前記第2傾斜パターン部は、0nm〜50nmの深さ偏差を有する傾斜溝パターンを含むものである回折格子導光板用モールド基材の製造方法を提供する。
以下、本発明を具体的に説明するために実施例を挙げて詳細に説明する。しかし、本発明に係る実施例は種々の異なる形態に変形可能であり、本発明の範囲が以下に述べる実施例に限定されると解釈されない。本明細書の実施例は、当業界における平均的な知識を有する者に本発明をより完全に説明するために提供されるものである。
図4は、実施例および比較例によるファラデーケージの高エッチング領域を確認するステップのための模式図を示すものである。
Claims (12)
- 0.5Ω/□以上の面抵抗を有するメッシュ部が上面に備えられたファラデーケージを用意するステップと、
前記ファラデーケージの底面にサンプル基材を設け、平面プラズマエッチングを行って、前記ファラデーケージ内の高エッチング領域を確認するステップと、
傾斜面を有する支持台を用意し、前記傾斜面の下部領域を前記ファラデーケージの高エッチング領域に位置させる支持台整列ステップと、
前記支持台の傾斜面上にモールド用基材を設けるステップと、
プラズマエッチングを用いて、前記モールド用基材の一側に第1傾斜パターン部および前記モールド用基材の他側に第2傾斜パターン部を同時に形成するパターニングステップとを含み、
前記パターニングステップにおけるエッチング率は、前記傾斜面の上部領域から下部領域へ減少後に反転して増加し、
前記第1傾斜パターン部は、深さ勾配を有する傾斜溝パターンを含み、
前記第2傾斜パターン部は、0nm〜50nmの深さ偏差を有する傾斜溝パターンを含む回折格子導光板用モールド基材の製造方法。 - 前記第2傾斜パターン部の傾斜溝パターンの深さは、前記第1傾斜パターン部の傾斜溝パターンの最大深さの70%〜130%である、請求項1に記載の回折格子導光板用モールド基材の製造方法。
- 前記傾斜面の最上部のエッチング速度と前記傾斜面の最下部のエッチング速度との差は、30%以内である、請求項1または2に記載の回折格子導光板用モールド基材の製造方法。
- 前記メッシュ部は、金属メッシュ上にフッ化炭素ラジカルが吸着されたものである、請求項1から3のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記高エッチング領域は、前記サンプル基材上に線状に示されるものである、請求項1から4のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記モールド用基材上に開口パターン部を含むマスクを設けるステップをさらに含む、請求項1から5のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記第1傾斜パターン部の傾斜溝パターンの最小深さと最大深さとの差は、100nm以上200nm以下である、請求項1から6のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記第1傾斜パターン部は、前記エッチング率が反転して増加する前の領域、または前記エッチング率が反転した後に増加する領域で形成される、請求項1から7のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記パターニングステップにおけるエッチング方向は、前記ファラデーケージの下面に垂直な方向である、請求項1から8のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記支持台の傾斜角は、35゜以上45゜以下である、請求項1から9のいずれか一項に記載の回折格子導光板用モールド基材の製造方法。
- 前記支持台は、2つの傾斜面を含み、前記傾斜面の下部領域はそれぞれ、前記ファラデーケージの高エッチング領域に位置する、請求項1に記載の回折格子導光板用モールド基材の製造方法。
- 請求項1から10のいずれか一項に記載の製造方法で製造された回折格子導光板用モールド基材を用意するステップと、
前記回折格子導光板用モールド基材上に樹脂組成物を塗布するステップと、
回折格子パターンが形成される面の反対面上に透明基材を設けるステップと、
前記樹脂組成物を硬化して回折格子パターンを形成するステップと、
前記回折格子導光板用モールド基材と前記回折格子パターンとを分離して回折格子導光板を形成するステップとを含む回折格子導光板の製造方法。
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