JP4109247B2 - 半透過型液晶表示装置の製造方法 - Google Patents
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- JP4109247B2 JP4109247B2 JP2004372366A JP2004372366A JP4109247B2 JP 4109247 B2 JP4109247 B2 JP 4109247B2 JP 2004372366 A JP2004372366 A JP 2004372366A JP 2004372366 A JP2004372366 A JP 2004372366A JP 4109247 B2 JP4109247 B2 JP 4109247B2
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 73
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 239000010410 layer Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 53
- 239000000758 substrate Substances 0.000 claims description 47
- 229920002120 photoresistant polymer Polymers 0.000 claims description 45
- 229910052751 metal Inorganic materials 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 36
- 239000004065 semiconductor Substances 0.000 claims description 36
- 239000011229 interlayer Substances 0.000 claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- 238000005530 etching Methods 0.000 claims description 14
- 238000000151 deposition Methods 0.000 claims description 11
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 11
- 229920005591 polysilicon Polymers 0.000 claims description 11
- 229910052779 Neodymium Inorganic materials 0.000 claims description 9
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 9
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 7
- 238000001312 dry etching Methods 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- 238000002310 reflectometry Methods 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 229910001887 tin oxide Inorganic materials 0.000 claims description 6
- 238000001039 wet etching Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 3
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 claims description 3
- 238000004380 ashing Methods 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 239000010408 film Substances 0.000 description 86
- 238000003860 storage Methods 0.000 description 20
- 239000003990 capacitor Substances 0.000 description 13
- 239000010409 thin film Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000001029 thermal curing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133371—Cells with varying thickness of the liquid crystal layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- 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
- G02F1/01—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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136231—Active matrix addressed cells for reducing the number of lithographic steps
- G02F1/136236—Active matrix addressed cells for reducing the number of lithographic steps using a grey or half tone lithographic process
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第二に、反射領域に凸凹構造を有するように別途の熱処理工程を進めなくて良いため、熱処理によってフォトアクリルで構成された有機絶縁膜の特性が悪くなるという問題を防止できる。
第三に、反射電極が透過電極の上部に形成されるので、従来対比反射電極が透過電極の下部に形成され、反射効率が落ちるという問題を防止できる。
まず、本発明の実施の形態に係る半透過型液晶表示装置の構成について述べる。
図4は、本発明の実施の形態に係る半透過型液晶表示装置の平面図で、図5は、本発明の実施の形態に係る図4のI−I´線上の半透過型液晶表示装置の構造断面図である。
Claims (15)
- 各画素領域が反射領域と透過領域とに定義される液晶表示装置の製造方法において、
基板上に半導体パターンを形成する第1段階と、
前記半導体パターンを含む基板の全面にゲート絶縁膜を形成し、当該ゲート絶縁膜上に導電性金属を形成してパターニングし、前記半導体パターンにゲート電極がオーバーラップするように前記基板上にゲートライン及びゲート電極を形成すると同時に、前記ゲートラインと平行に配列され、前記半導体パターンにオーバーラップするように共通ラインを形成する第2段階と、
前記ゲート電極の両側の前記半導体パターンにソース/ドレイン領域を形成する第3段階と、
前記ゲートラインを含む基板の全面に層間絶縁膜及び透明導電層を順次形成する第4段階と、
第1ハーフトーンマスクを用いて前記層間絶縁膜及び透明導電層を選択的に除去して、前記ソース/ドレイン領域に第1、第2コンタクトホールを形成し、前記画素領域に透過電極を形成する第5段階と、
前記透過電極を含む基板の全面に絶縁膜を蒸着する第6段階と、
第2ハーフトーンマスクを用いて前記絶縁膜を選択的に除去して、前記ソース/ドレイン領域にソース/ドレインコンタクトホールを形成し、前記透過領域に透過ホールを形成し、前記反射領域の前記絶縁膜の表面に凸凹構造を形成する第7段階と、
前記絶縁膜上に金属層を蒸着し、選択的に除去して前記ソース領域に電気的に連結されるデータライン及びソース電極を形成し、前記ドレイン領域と前記透過電極とに電気的に連結されるように前記反射領域にドレイン電極及び反射電極を形成する第8段階と
を含むことを特徴とする半透過型液晶表示装置の製造方法。 - 前記半導体パターンを形成する段階は、
前記基板上に非晶質シリコン層を蒸着する段階と、
前記非晶質シリコンをポリシリコン層に結晶化する段階と、
前記ポリシリコン層を選択的に除去する段階とを含む
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記第1ハーフトーンマスクは、
画素領域に相応する遮光部と、
前記第1、第2コンタクトホールに相応する透過部と、
前記遮光部と透過部を除いた領域に相応する半透過部とを備えて構成される
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記第5段階は、
前記透明導電層上にフォトレジストを蒸着する段階と、
前記第1ハーフトーンマスクを用いた露光及び現像工程で前記遮光部に相応する部分は残っており、前記透過部に相応する部分は前記透明導電層が露出するように除去され、前記半透過部に相応する部分は一定の厚さが除去されるように前記フォトレジストをパターニングする段階と、
前記パターニングされたマスクを用いて、露出された前記透明導電膜及び層間絶縁膜を選択的に除去して、前記第1、第2コンタクトホールを形成する段階と、
前記遮光部にのみ残るように前記フォトレジストをアッシングする段階と、
前記アッシングされたフォトレジストをマスクに用いて前記透明導電膜を選択的に除去して、前記透過電極を形成する段階と
を含むことを特徴とする請求項3に記載の半透過型液晶表示装置の製造方法。 - 前記第1、第2コンタクトホールの形成時、前記透明導電膜は湿式食刻で除去し、前記層間絶縁膜は乾式食刻工程で除去する
ことを特徴とする請求項4に記載の半透過型液晶表示装置の製造方法。 - 前記透過電極の形成時、前記透明導電層は湿式食刻工程で除去する
ことを特徴とする請求項4に記載の半透過型液晶表示装置の製造方法。 - 前記透明導電膜は、インジウム−スズ−オキサイド(ITO)、スズーオキサイド(TO)、インジウム−ジンクーオキサイド(IZO)、またはインジウム−スズ−ジンクーオキサイド(ITZO)で形成する
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記第2ハーフトーンマスクは、
前記ソース/ドレインコンタクトホールに対応する透過部と、
前記反射領域の凹部及び前記透過ホールに対応する半透過部と、
前記反射領域の凸部に対応する遮光部とを含む
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記第7段階は、
前記絶縁膜上にフォトレジストを形成する段階と、
前記第2ハーフトーンマスクを用いた露光及び現像工程で前記遮光部に相応する部分は残っており、前記透過部に相応する部分は有機絶縁膜が露出するように除去され、前記半透過部に相応する部分は一定の厚さが除去されるように前記フォトレジストをパターニングする段階と、
前記パターニングされたフォトレジストをマスクに用いて、前記露出した絶縁膜を選択的に除去して前記ソース/ドレインコンタクトホールを形成する段階と、
前記透過電極が現れるように前記パターニングされたフォトレジストと前記絶縁膜とを同時に食刻して透過領域に透過ホールを形成し、前記反射領域の絶縁膜の表面に凸凹部を形成する段階と
を含むことを特徴とする請求項8に記載の半透過型液晶表示装置の製造方法。 - 前記パターニングしたフォトレジストと前記絶縁膜とを同時に食刻する段階は、乾式食刻で食刻する
ことを特徴とする請求項9に記載の半透過型液晶表示装置の製造方法。 - 前記凸凹部が曲線型の凸凹となるようにリフローする段階を更に含む
ことを特徴とする請求項9に記載の半透過型液晶表示装置の製造方法。 - 前記絶縁膜は、フォトアクリルで形成する
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記金属層はAlまたはAlネオジムまたはAgを使用するか、或いは抵抗の小さい第1金属と、反射度の高い第2金属とを積層して形成する
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。 - 前記第1金属はMoを使用し、前記第2金属はAlまたはAlネオジムまたはAgを使用する
ことを特徴とする請求項13に記載の半透過型液晶表示装置の製造方法。 - 前記層間絶縁膜は、シリコン酸化膜やシリコン窒化膜で形成する
ことを特徴とする請求項1に記載の半透過型液晶表示装置の製造方法。
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JP (1) | JP4109247B2 (ja) |
KR (1) | KR100617031B1 (ja) |
CN (1) | CN1637530B (ja) |
FR (1) | FR2864640B1 (ja) |
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TWI302999B (en) | 2008-11-11 |
FR2864640B1 (fr) | 2007-08-03 |
CN1637530A (zh) | 2005-07-13 |
US7423712B2 (en) | 2008-09-09 |
US20050140877A1 (en) | 2005-06-30 |
KR100617031B1 (ko) | 2006-08-30 |
JP2005196172A (ja) | 2005-07-21 |
TW200525225A (en) | 2005-08-01 |
GB0428535D0 (en) | 2005-02-09 |
GB2409762B (en) | 2006-04-19 |
CN1637530B (zh) | 2010-04-14 |
GB2409762A (en) | 2005-07-06 |
KR20050069113A (ko) | 2005-07-05 |
FR2864640A1 (fr) | 2005-07-01 |
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