JP2012103674A - 液晶表示装置及びその製造方法 - Google Patents
液晶表示装置及びその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
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- 239000000758 substrate Substances 0.000 claims abstract description 64
- 239000010408 film Substances 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 18
- 229920002120 photoresistant polymer Polymers 0.000 claims description 11
- 239000010409 thin film Substances 0.000 claims description 10
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
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- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】本発明の一実施形態に係る液晶表示装置は、第1基板と、前記第1基板と対向する第2基板と、前記第1基板と前記第2基板との間に配置される液晶分子を含む液晶層と、前記第1基板上に配置される第1電極と、前記第1電極上に配置される絶縁膜と、前記絶縁膜上に配置される第2電極と、前記第2基板上に配置される第3電極と、前記第2電極及び前記第3電極のうちの少なくとも一つの上に配置する配向膜とを含み、前記第2電極は微細スリット構造に形成され、前記液晶層及び前記配向膜のうちの少なくとも一つは配向補助剤を含むことを特徴とする。
【選択図】図2
Description
V1≠V3 ・・・(1)
V1=V2≠V3 ・・・(2)
V1≠V2≠V3 ・・・(3)
|V2−V3|≧|V1−V3| ・・・(4)
V1≠V3、微細スリット電極はフローティングされる・・・(2)
V1=V2≠V3・・・(3)
V1≠V2≠V3・・・(4)
|V2−V1|≧|V3−V1| ・・・(5)
V1≠V3、微細スリット電極はフローティングされる ・・・(6)
V2=V3≠V1 ・・・(7)
V1≠V2≠V3 ・・・(8)
Claims (35)
- 第1基板と、
前記第1基板と対向する第2基板と、
前記第1基板と前記第2基板との間に配置される液晶分子を含む液晶層と、
前記第1基板上に配置される第1電極と、
前記第1電極上に配置される絶縁膜と、
前記絶縁膜の上に配置される第2電極と、
前記第2基板上に配置される第3電極と、
前記第2電極及び前記第3電極のうちの少なくとも一つの上に配置される配向膜と、を含み、
前記第2電極は微細スリット構造を含み、前記液晶層及び前記配向膜のうちの少なくとも一つは配向補助剤を含ことを特徴とする液晶表示装置。 - 前記第2基板上に配置されるゲート線と、
前記第2基板上に配置され、前記ゲート線と交差するデータ線と、
前記ゲート線及び前記データ線に接続される薄膜トランジスタと、を含み、
前記薄膜トランジスタは前記第3電極と接続されることを特徴とする請求項1に記載の液晶表示装置。 - 前記第1電極及び前記第3電極は板状であることを特徴とする請求項2に記載の液晶表示装置。
- 前記第1電極に印加される電圧を第1電圧、前記第2電極に印加される電圧を第2電圧、前記第3電極に印加される電圧を第3電圧とする時、前記第2電圧と前記第3電圧を互いに異なるようにした状態で、前記液晶層及び前記配向膜のうちの少なくとも一つが光源からの光を照射することを特徴とする請求項3に記載の液晶表示装置。
- 駆動中に垂直電界が前記第1電圧と前記第3電圧との差によって発生することを特徴とする請求項4に記載の液晶表示装置。
- 前記第2電極は、駆動中にフローティングされて、前記第1電圧と前記第3電圧が異なることを特徴とする請求項5に記載の液晶表示装置。
- 駆動中に前記第1電圧と前記第2電圧は同じで前記第1電圧及び前記第2電圧が前記第3電圧とは異なることを特徴とする請求項5に記載の液晶表示装置。
- 前記第1電圧、前記第2電圧、及び前記第3電圧が駆動中に互いに異なることを特徴とする請求項5に記載の液晶表示装置
- 前記第1電極及び前記第3電極は板状であることを特徴とする請求項1に記載の液晶表示装置。
- 前記第1電極に印加される電圧を第1電圧、前記第2電極に印加される電圧を第2電圧、前記第3電極に印加される電圧を第3電圧とする時、前記第2電圧及び前記第3電圧を互いに異なるようにした状態で、前記液晶層及び前記配向膜のうちの少なくとも一つが光源からの光を照射することを特徴とする請求項9に記載の液晶表示装置。
- 駆動中に垂直電界が前記第1電圧と前記第3電圧との差によって発生することを特徴とする請求項10に記載の液晶表示装置。
- 前記第2電極は駆動中にフローティングされて、前記第1電極と前記第3電極が異なることを特徴とする請求項11に記載の液晶表示装置。
- 前記第1電圧と前記第2電圧は駆動中に同じで前記第1電圧及び前記第2電圧が前記第3電圧とは異なることを特徴とする請求項11に記載の液晶表示装置。
- 駆動中に前記第1電圧、前記第2電圧、及び前記第3電圧が互いに異なることを特徴とする請求項11に記載の液晶表示装置。
- 前記絶縁膜の厚さは3.5μm以下であることを特徴とする請求項1に記載の液晶表示装置。
- 前記絶縁膜の誘電率は1.5以上8.5以下であることを特徴とする請求項15に記載の液晶表示装置。
- 前記第2電極は、横幹部及び前記横幹部と交差する縦幹部を含む十字型幹部と、
前記十字型幹部から延び出た複数の微細枝部と、
を含むことを特徴とする請求項1に記載の液晶表示装置。 - 前記第2電極は、前記十字型幹部から互いに異なる方向に延び出た前記複数の微細枝部に対応する複数の領域を含むことを特徴とする請求項17に記載の液晶表示装置。
- 前記第2電極は、横開口部及び前記横開口部と交差する縦開口部を含む十字型開口部と、
前記十字型開口部から延び出た複数の微細開口パターンと、
を含むことを特徴とする請求項1に記載の液晶表示装置。 - さらに、前記第2電極は、前記複数の微細開口パターンの間に配置される微細枝部と、
前記微細枝部の一端をそれぞれ接続する周縁パターンと、
を含むことを特徴とする請求項19に記載の液晶表示装置。 - 前記配向補助剤は電気的に陰性であり、前記配向膜に含まれていることを特徴とする請求項1に記載の液晶表示装置。
- 前記配向膜は、主鎖(main−chain)と、前記主鎖に結合された側鎖(side−chain)とを含み、
前記配向補助剤は前記側鎖に結合されていることを特徴とする請求項21に記載の液晶表示装置。 - 第1基板上に第1電極を形成し、
前記第1電極上に絶縁膜を形成し、
前記絶縁膜上に第2電極を形成し、
前記第1基板と対向する第2基板上に第3電極を形成し、
前記第2電極及び前記第3電極のうちの少なくとも一つの上に配向膜を形成し、
前記第1基板と前記第2基板を合着し、
前記第1基板と前記第2基板との間に液晶層を形成し、
前記第2電極と前記第3電極に異なる電圧を印加し、
前記第2電極及び前記第3電極に異なる電圧を印加した状態で、前記液晶層に光を照射し、
前記第2電極は微細スリット構造に形成され、
前記液晶層及び前記配向膜のうちの少なくとも一つは配向補助剤を含むことを特徴とする液晶表示装置の製造方法。 - 前記第2基板上にゲート線を形成し、
前記第2基板上に配置して、前記ゲート線と交差するデータ線を形成し、
前記ゲート線及び前記データ線に接続される薄膜トランジスタを形成し、
前記薄膜トランジスタが前記第3電極と接続することを特徴とする請求項23に記載の液晶表示装置の製造方法。 - 前記第1電極に印加される電圧を第1電圧(V1)、前記第2電極に印加される電圧を第2電圧(V2)、前記第3電極に印加される電圧を第3電圧(V3)とする時、前記第2電極と前記第3電極に異なる電圧を印加することは、前記第1電圧、前記第2電圧、及び前記第3電圧が、|V2−V3|≧|V1−V3|となることを特徴とする請求項24に記載の液晶表示装置の製造方法。
- 前記第2電極と前記第3電極に異なる電圧を印加することは、
前記第1電圧と前記第3電圧を一定に維持しながら、前記第2電圧を可変させることを特徴とする請求項25に記載の液晶表示装置の製造方法。 - 前記第2電圧を可変させてから前記第1電圧を上昇させることを特徴とする請求項26に記載の液晶表示装置の製造方法。
- 前記第2電極及び前記第3電極に異なる電圧を印加しながら、前記液晶層に光を照射した後、前記液晶層に電界が印加されない状態で前記液晶層に光を照射することを特徴とする請求項23に記載の液晶表示装置の製造方法。
- 前記第1基板上に前記第1電極、前記絶縁膜、前記第2電極の形成は、
前記第1基板上に第1透明電極層、絶縁物質層、第2透明電極層を順次に形成し、
前記第2透明電極層上にフォトレジストパターンを形成し、
前記フォトレジストパターンをマスクとして用いて前記第2透明電極層をエッチングし、
前記フォトレジストパターンをマスクとして用いて前記絶縁物質層をエッチングすることを含むことを特徴とする請求項23に記載の液晶表示装置の製造方法。 - 前記第1電極に印加される電圧を第1電圧(V1)、前記第2電極に印加される電圧を第2電圧(V2)、前記第3電極に印加される電圧を第3電圧(V3)とする時、
前記第2電極と前記第3電極に異なる電圧を印加することは、前記第1電圧、前記第2電圧、及び前記第3電圧が|V2−V3|≧|V1−V3|を満たすことを特徴とする請求項23に記載の液晶表示装置の製造方法。 - 前記第2電極と前記第3電極に異なる電圧を印加することは、
前記第1電圧及び前記第3電圧を一定に維持しながら、前記第2電圧を可変させることを特徴とする請求項30に記載の液晶表示装置の製造方法。 - 前記第2電圧を可変させてから前記第1電圧を上昇させることを特徴とする請求項31に記載の液晶表示装置の製造方法。
- 第1電極を含む第1表示板と、
前記第1表示板と対向する第2表示板とを含み、
前記第2表示板は、
基板と、
前記基板上に配置される第2電極と、
前記第2電極上に配置される絶縁膜と、
前記絶縁膜の上に配置され、スリットを含む第3電極と、を含み、
前記第1電極は第1電圧が印加され、前記第2電極は第2電圧が印加され、前記第3電極はフローティングされて、
前記第1電圧と前記第2電圧が異なることを特徴とする液晶表示装置。 - 駆動中に垂直電界が前記第1電圧と前記第2電圧との差によって発生されることを特徴とする請求項33に記載の液晶表示装置。
- 前記第3電極は画素領域内に配置されることを特徴とする請求項33に記載の液晶表示装置。
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