JP7067695B2 - 基板 - Google Patents
基板 Download PDFInfo
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- JP7067695B2 JP7067695B2 JP2020503705A JP2020503705A JP7067695B2 JP 7067695 B2 JP7067695 B2 JP 7067695B2 JP 2020503705 A JP2020503705 A JP 2020503705A JP 2020503705 A JP2020503705 A JP 2020503705A JP 7067695 B2 JP7067695 B2 JP 7067695B2
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Images
Classifications
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Description
本出願は、2017年7月27日に出願された大韓民国特許出願第10-2017-0095466号及び2018年7月26日に出願された大韓民国特許出願第10-2018-0087287号に基づく優先権の利益を主張し、該当大韓民国特許出願の文献に開示されたすべての内容は本明細書の一部として組み込まれる。
本出願は、基板に関する。
a=b=R
a≠b=R or b≠a=R
a=b<R
a≠b<R
図18に示したような形態のインプリンティングマスクを製造し、それを用いて半球型スペーサを製造した。インプリンティングマスクは、図18に示した形態によってPET(poly(ethylene terephthalate))本体9にインプリンティングモールド901を形成し、前記モールド901に凹部9011を形成した後、凹部9011が形成されていない面に黒色層(AlOxNy)902を形成し、黒色層902と凹部9011上に離型層を形成して製造した。このとき、凹部は、幅が約24μm~26μmの範囲内であり、約9μm~10μm程度である半球形状に形成した。また、スペーサの配置は、図22に記載された不規則度が約70%程度になるように前記凹部を形成した。
実施例1のように、PC(polycarbonate)基材層(図6及び図7の10)上に結晶質のITO(Indium Tin Oxide)電極層(図6及び図7の40)を形成し、その上に黒色層(図6及び図7の30)を形成した。黒色層は、まず、銅(Cu)をITO電極層上に約80nm程度の厚さで蒸着した後、さらに銅酸化物(CuOx)約30nm程度の厚さで蒸着して、2層構造(Cu/CuOx)に形成した。上記で銅は、物理的軟性(physical ductility)が約0.62程度と知られた金属である。その後、スペーサとして、円柱状のコラムスペーサが形成されるようにマスクを変更して適用したこと以外は、実施例1と同じ方式でスペーサを製作した。前記円柱状のコラムスペーサの形成時には、遮光層が含まれたフォトマスクとしてポリエステルフィルムである本体の一面に遮光層が形成され、その後、保護層が形成されたコアリンク社の常用製品を適用した。図26は、上記のように形成されたスペーサの写真である。図26の(a)は、OM形状であり、(b)は、SEMイメージである。
ハニカム形態に配置されたスペーサを形成したこと以外は、実施例1と同じ方式でスペーサを製作した。図27は、上記のように形成されたスペーサの写真である。図27で(A)及び(B)は、それぞれ低段差パターンの低倍率及び高倍率SEM(Scanning electron microscope)イメージであり、(C)は、高段差パターンの高倍率SEM(Scanning electron microscope)イメージであり、(D)は、反射モードのOM(Optical Microscopy)低倍率イメージであり、(E)は、透過モードの高倍率写真である。
黒色層を形成しないこと以外は、実施例1と同じ方式でスペーサを製作した。図28は、前記比較例1の基板を適用した液晶セルの遮光状態での写真である。
実施例のように黒色層とコラムスペーサを形成せずに、スペーサとして公知にされたブラックボールスペーサ(Black Ball Spacer)(Sekisui Chem社、KBN-512)を適用して、液晶セルを製造した。前記液晶セルは、下部基材層であるITO電極層が形成されたフィルムの前記ITO電極層上に前記ブラックボールスペーサが分散された配向膜をコーティングした後に、同一にITO電極層が形成されたフィルムの前記ITO電極層をボールスペーサが分散された配向膜がコーティングされた下部基材層のITO電極層と対向配置させた状態で、その間に液晶を満たして合着して製作した。図29は、前記液晶セルの遮光状態での写真である。
黒色層を形成せずに、その代わりに紫外線硬化型樹脂(UV)内にカーボンブラックを約3重量%の量で適用してコラムスペーサを形成したこと以外は、実施例1と同じ方式でスペーサを製作した。図30は、前記比較例3の基板を適用した液晶セルの遮光状態での写真である。
図31及び図32は、それぞれ実施例1及び比較例1で形成されたコラムスペーサフィルムのOM(Optical Microscopy)イメージである。
Claims (10)
- フレキシブル基材層;
前記フレキシブル基材層上に形成された透明コラムスペーサ;
前記透明コラムスペーサと前記フレキシブル基材層との間に存在する黒色層;及び
前記黒色層と前記フレキシブル基材層との間に存在し、前記黒色層及び前記フレキシブル基材層と接触する電極層
を含み、
前記黒色層は、
物理的延性値が0.55以上である金属の金属層である第1層と、
物理的延性値が0.55以上である金属の金属酸化物層、物理的延性値が0.55以上である金属の金属窒化物層、又は物理的延性値が0.55以上である金属の金属酸窒化物層である第2層を含む、
基板。 - 黒色層の面積(B)と透明コラムスペーサの底部の面積(T)の割合(T/B)は、0.5~1.5の範囲内である、
請求項1に記載の基板。 - 黒色層は、前記透明コラムスペーサの底部と同一であるかそれより小さい面積を有する、
請求項1又は請求項2に記載の基板。 - 黒色層と透明コラムスペーサは、互いに重畳されている、
請求項1から請求項3のいずれか1項に記載の基板。 - 黒色層は、
前記金属層である第1層の両側に
前記金属酸化物層、前記金属窒化物層又は前記金属酸窒化物層である第2層
を含む
多層構造である、
請求項1から請求項4のいずれか1項に記載の基板。 - 黒色層は、厚さが30nm~5000nmの範囲内にある、
請求項1から請求項5のいずれか1項に記載の基板。 - 第1層と第2層の厚さは、
それぞれ30nm~200nmの範囲内にある、
請求項1から請求項6のいずれか1項に記載の基板。 - 透明スペーサは、上部に半球部を有する半球型スペーサである、
請求項1から請求項7のいずれか1項に記載の基板。 - 請求項1から請求項8のいずれか1項に記載の基板及び、
前記基板と対向配置されており、前記基板の透明スペーサにより前記基板との間隔が維持された第2基板
を含む、
光学デバイス。 - 基板の間の間隔には液晶物質が存在する、
請求項9に記載の光学デバイス。
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