JP5266889B2 - 光透過性導電体の製造方法 - Google Patents
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
- H05K1/097—Inks comprising nanoparticles and specially adapted for being sintered at low temperature
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0108—Transparent
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0242—Shape of an individual particle
- H05K2201/026—Nanotubes or nanowires
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/032—Materials
- H05K2201/0323—Carbon
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Crystallography & Structural Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Non-Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Manufacturing Of Printed Wiring (AREA)
Description
多数のカーボンナノ線状構造体がその一部で接し合い、二次元に集積した導電材が設 けられており、
前記導電材が前記カーボンナノ線状構造体のみで構成された光透過性導電材であり、
前記光透過性支持体表面とこの表面に接しているカーボンナノ線状構造体との間、及 び、接し合っているカーボンナノ線状構造体同士の間には、直接に結合が形成されてい る
、光透過性導電体に係わる。
カーボンナノ線状構造体が分散用溶媒中に分散している分散液に前記光透過性支持体 を所定の時間浸漬し、前記光透過性支持体表面にカーボンナノ線状構造体を吸着させる 工程と、
前記分散液から取り出した前記光透過性支持体表面を洗浄用溶媒によって洗浄し、吸 着されていないカーボンナノ線状構造体を除去する工程と、
前記分散用溶媒及び前記洗浄用溶媒を蒸発させ、吸着されたカーボンナノ線状構造体 を固着させる工程と
からなる一連の工程を所定の回数行う、光透過性導電体の製造方法に係わる。
実施の形態1では、主として、請求項1〜9に記載した光透過性導電体、および、請求項13〜21に記載した光透過性導電体の製造方法の例について説明する。この際、前記カーボンナノ線状構造体としてカーボンナノチューブを用いるものとする。
実施の形態2では、主として、請求項11に記載した光透過性導電体、および請求項22に記載した光透過性導電体の製造方法の例について説明する。
実施の形態3では、主として、請求項24に記載した光透過性導電体が設けられている電子デバイスの例として、タッチパネルとして構成された電子デバイスについて説明する。
<光透過性導電体の作製>
レーザーアブレーション法によって単層カーボンナノチューブを合成した。この単層カーボンナノチューブの酸化処理を、30質量%の過酸化水素水を用いて100℃にて8時間行った後、純水で洗浄し、乾燥させた。
作製した光透過性導電体の全光線透過率を測定した。また、4端子のシート抵抗測定器を用いて、光透過性導電体のシート抵抗を測定した。さらに、原子間力顕微鏡(AFM)を用いて、光透過性導電体の表面状態の観察を行った。
HiPco法によって製造された単層カーボンナノチューブを、カーボンナノテクノロジー社から購入した。この単層カーボンナノチューブを所定の濃度になるように1,1,2,2−テトラクロロエタン中に加えた後、超音波洗浄器を用いて2時間超音波を照射して、単層カーボンナノチューブが1,1,2,2−テトラクロロエタン中に均一に分散した分散液を調製した。それ以外は実施例1〜5と同様にして光透過性導電体を作製し、その特性を評価した。結果を表1に示す。
3…光透過性支持体、10…光透過性導電体、20…光透過性導電体、
21…高分子樹脂層、30…光透過性導電体、31…光透過性支持体、
32…透明導電膜、40…光透過性導電体、41…光透過性支持体、42…透明導電膜、
50…タッチパネル、51…スペーサ
Claims (6)
- 光透過性支持体の表面に、
多数のカーボンナノ線状構造体がその一部で接し合い、二次元に集積した導電材が設けられており、
前記導電材が前記カーボンナノ線状構造体のみで構成された光透過性導電材であり、
前記光透過性支持体表面とこの表面に接しているカーボンナノ線状構造体との間、及び、接し合っているカーボンナノ線状構造体同士の間には、直接に結合が形成されている
光透過性導電体の製造方法であって、
カーボンナノ線状構造体が分散用溶媒中に分散している分散液に前記光透過性支持体を所定の時間浸漬し、前記光透過性支持体表面にカーボンナノ線状構造体を吸着させる工程と、
前記分散液から取り出した前記光透過性支持体表面を洗浄用溶媒によって洗浄し、吸着されていないカーボンナノ線状構造体を除去する工程と、
前記分散用溶媒及び前記洗浄用溶媒を蒸発させ、吸着されたカーボンナノ線状構造体を固着させる工程と
からなる一連の工程を所定の回数行う、光透過性導電体の製造方法。 - 前記カーボンナノ線状構造体としてカーボンナノチューブを用い、前記分散用溶媒としてハロゲン化炭化水素を用い、前記光透過性支持体としてガラス板又は高分子樹脂板を用いる、請求項1に記載した光透過性導電体の製造方法。
- 前記光透過性支持体表面又は前記カーボンナノ線状構造体に、前記カーボンナノ線状構造体又は前記光透過性支持体表面との親和性を高めるための処理を施す、請求項1に記載した光透過性導電体の製造方法。
- 前記光透過性支持体として高分子樹脂板を用い、その表面をオゾン処理、オゾンガス存在下での紫外線処理、酸素ガス存在下でのコロナ処理、酸素ガス存在下でのプラズマ処理、及びシランカップリング剤による処理の少なくとも1つによって親水化するか、又は表面に親水層を積層する、請求項3に記載した光透過性導電体の製造方法。
- 前記カーボンナノ線状構造体を、過酸化水素水、硝酸、及び濃硫酸のうちの少なくとも1種との加熱処理によって親水化する、請求項1に記載した光透過性導電体の製造方法。
- 前記光透過性支持体表面とこの表面に接しているカーボンナノ線状構造体との接合部を被覆する高分子樹脂層を設ける工程を有する、請求項1に記載した光透過性導電体の製造方法。
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