JP2008096962A - 表示装置及びその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000003990 capacitor Substances 0.000 claims abstract description 166
- 238000003860 storage Methods 0.000 claims abstract description 151
- 239000010408 film Substances 0.000 claims abstract description 124
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 59
- 229920005591 polysilicon Polymers 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000005224 laser annealing Methods 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 95
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 239000004973 liquid crystal related substance Substances 0.000 description 17
- 230000014759 maintenance of location Effects 0.000 description 11
- 239000012535 impurity Substances 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- G—PHYSICS
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- 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
- G02F1/136213—Storage capacitors associated with the pixel electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1255—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/127—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement
- H01L27/1274—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement using crystallisation of amorphous semiconductor or recrystallisation of crystalline semiconductor
- H01L27/1281—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement using crystallisation of amorphous semiconductor or recrystallisation of crystalline semiconductor by using structural features to control crystal growth, e.g. placement of grain filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/13—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body combined with thin-film or thick-film passive components
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78633—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device with a light shield
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- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
【解決手段】保持容量1Cにおいて、下層保持容量電極12、薄い下層保持容量膜14、ポリシリコン層15C、上層保持容量膜16C、上層保持容量電極18が積層される。ポリシリコン層15Cはレーザーアニールによる結晶化により形成される。保持容量1Cのポリシリコン層15Cは微結晶となりその表面の平坦性が良好となる。ポリシリコン層15C(保持容量電極)のパターンは、開口部OPの底部より大きく形成され、その外周部のエッジが開口部OPの傾斜部K上又は開口部OPの外のバッファ膜13上に配置されるようにした。
【選択図】図1
Description
い。
1C,100C 保持容量
10 第1の基板 11 遮光金属層 12 下層保持容量電極
13,53 バッファ膜 14 下層保持容量膜
15,15C,55 ポリシリコン層
16,56 ゲート絶縁膜 16C 上層保持容量膜
17 ゲート電極 18 上層保持容量電極
19 層間絶縁膜 20S ソース電極 20D ドレイン電極
21 パッシベーション膜 22 平坦化膜 23 画素電極
30 第2の基板 31 共通電極 56C 保持容量膜
57 ゲート電極 58 上層容量電極
OP 開口部 LC 液晶層
CH1,CH2,CH3 コンタクトホール
Claims (9)
- 基板上に薄膜トランジスタと、前記薄膜トランジスタを通して画素電極に印加される表示信号を保持する保持容量を備える表示装置において、
前記薄膜トランジスタは、前記基板上に形成された遮光層と、前記遮光層上にバッファ膜を介して形成されたポリシリコン層と、前記ポリシリコン層を覆うゲート絶縁膜と、前記ゲート絶縁膜上に形成されたゲート電極を備え、
前記保持容量は、前記基板上に形成された下層保持容量電極と、前記下層保持容量電極上に形成された前記バッファ膜の開口部を通して、前記下層保持容量電極に接触し、前記バッファ膜より薄い下層保持容量膜と、前記下層保持容量膜を介して前記下層保持容量電極上に形成され、前記バッファ膜上のポリシリコン層よりも結晶粒径の小さな微結晶ポリシリコン部分を有する保持容量電極と、前記保持容量電極を覆う上層保持容量膜と、前記上層保持容量膜を介して前記保持容量電極上に形成された上層保持容量電極と、を備えることを特徴とする表示装置。 - 前記保持容量電極のパターンは前記開口部の底部より大きく形成され、前記保持容量電極の外周部のエッジが前記開口部の傾斜部の前記バッファ膜上又は前記開口部の外側の前記バッファ膜上に配置され、前記保持容量電極の外周部の結晶粒径がその内側の結晶粒径より大きいことを特徴とする請求項1に記載の表示装置。
- 前記バッファ膜と前記下層保持容量膜の膜厚の和が300nm以上であることを特徴とする請求項1又は請求項2に記載の表示装置。
- 前記下層保持容量膜の膜厚は100nm以下であることを特徴とする請求項1又は請求項2に記載の表示装置。
- 前記保持容量電極の外周部は、前記上層保持容量電極と重畳しないことを特徴とする請求項2に記載の表示装置。
- 基板上に薄膜トランジスタと、この薄膜トランジスタを通して画素電極に印加される表示信号を保持する保持容量を備える表示装置の製造方法において、
前記基板上に遮光層及び下層保持容量電極を形成する工程と、
前記遮光層及び下層保持容量電極を覆って、バッファ膜を形成する工程と、
前記下層保持容量電極上の前記バッファ膜を選択的にエッチングして開口部を形成する工程と、
前記開口部を通して前記下層保持容量電極上に前記バッファ膜より薄い下層保持容量膜を形成する工程と、
前記バッファ膜及び前記下層保持容量膜上にアモルファスシリコン層を形成し、このアモルファスシリコン層に対してレーザーアニールを行うことによってこれをポリシリコン層とする工程と、
前記ポリシリコン層をパターニングして、保持容量電極を形成する工程と、
前記ポリシリコン層を覆うゲート絶縁膜、前記保持容量電極を覆う上層保持容量膜を形成する工程と、
前記ゲート絶縁膜上にゲート電極を形成し、前記上層保持容量膜上に上層保持容量電極を形成する工程と、を含むことを特徴とする表示装置の製造方法。 - 前記保持容量電極を形成する工程は、前記開口部の底部より大きく、前記保持容量電極のエッジが前記開口部の傾斜部の前記バッファ膜上又は前記開口部の外側の前記バッファ膜上に位置するように形成されることを特徴とする請求項6に記載の表示装置の製造方法。
- 前記バッファ膜と前記下層保持容量膜の膜厚の和が300nm以上であることを特徴とする請求項6又は請求項7に記載の表示装置の製造方法。
- 前記下層保持容量膜の膜厚は100nm以下であることを特徴とする請求項6又は請求項7に記載の表示装置の製造方法。
Priority Applications (4)
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JP2007179898A JP4179393B2 (ja) | 2006-09-14 | 2007-07-09 | 表示装置及びその製造方法 |
TW096132410A TW200813581A (en) | 2006-09-14 | 2007-08-31 | Display device and method of manufacturing the same |
KR1020070093062A KR100918138B1 (ko) | 2006-09-14 | 2007-09-13 | 표시 장치 및 그 제조 방법 |
US11/855,753 US8071985B2 (en) | 2006-09-14 | 2007-09-14 | Display device and method of manufacturing the same |
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JP2007179898A JP4179393B2 (ja) | 2006-09-14 | 2007-07-09 | 表示装置及びその製造方法 |
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TW (1) | TW200813581A (ja) |
Cited By (12)
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JP2012064604A (ja) * | 2010-09-14 | 2012-03-29 | Casio Comput Co Ltd | トランジスタ構造体、トランジスタ構造体の製造方法及び発光装置 |
US8399885B2 (en) | 2010-08-26 | 2013-03-19 | Samsung Display Co., Ltd. | Thin film transistor substrate and flat panel display apparatus |
JP2013201435A (ja) * | 2009-07-03 | 2013-10-03 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
JP2014098900A (ja) * | 2012-11-15 | 2014-05-29 | Boe Technology Group Co Ltd | 画素ユニット構造、アレー基板及び表示装置 |
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JP4179393B2 (ja) | 2008-11-12 |
KR20080025011A (ko) | 2008-03-19 |
TWI355551B (ja) | 2012-01-01 |
KR100918138B1 (ko) | 2009-09-17 |
US20080067519A1 (en) | 2008-03-20 |
TW200813581A (en) | 2008-03-16 |
US8071985B2 (en) | 2011-12-06 |
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