KR100918138B1 - 표시 장치 및 그 제조 방법 - Google Patents
표시 장치 및 그 제조 방법 Download PDFInfo
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- KR100918138B1 KR100918138B1 KR1020070093062A KR20070093062A KR100918138B1 KR 100918138 B1 KR100918138 B1 KR 100918138B1 KR 1020070093062 A KR1020070093062 A KR 1020070093062A KR 20070093062 A KR20070093062 A KR 20070093062A KR 100918138 B1 KR100918138 B1 KR 100918138B1
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 170
- 238000003860 storage Methods 0.000 claims abstract description 160
- 239000010408 film Substances 0.000 claims abstract description 127
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 63
- 229920005591 polysilicon Polymers 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000005224 laser annealing Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 13
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 2
- 238000000059 patterning Methods 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 88
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- 239000004973 liquid crystal related substance Substances 0.000 description 17
- 239000012535 impurity Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 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
- 150000002500 ions Chemical class 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
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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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
- G02F1/136—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
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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
- 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
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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
- 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
-
- 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
- H01L29/66—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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Ceramic Engineering (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims (12)
- 기판 상에 박막 트랜지스터와, 상기 박막 트랜지스터를 통해서 화소 전극에 인가되는 표시 신호를 유지하는 축적 용량을 구비하는 표시 장치로서,상기 박막 트랜지스터는, 상기 기판 상에 형성된 차광층과, 상기 차광층 상에 버퍼막을 개재하여 형성된 폴리실리콘층과, 상기 폴리실리콘층을 덮는 게이트 절연막과, 상기 게이트 절연막 상에 형성된 게이트 전극을 구비하고,상기 축적 용량은, 상기 기판 상에 형성된 하층 축적 용량 전극과, 상기 하층 축적 용량 전극 상에 형성된 상기 버퍼막의 개구부를 통해서, 상기 하층 축적 용량 전극에 접촉하고, 상기 버퍼막보다 얇은 하층 축적 용량막과, 상기 하층 축적 용량막을 개재하여 상기 하층 축적 용량 전극 상에 형성되고, 상기 버퍼막 상의 폴리실리콘층보다도 결정 입경이 작은 미세 결정 폴리실리콘 부분을 갖는 축적 용량 전극과, 상기 축적 용량 전극을 덮는 상층 축적 용량막과, 상기 상층 축적 용량막을 개재하여 상기 축적 용량 전극 상에 형성된 상층 축적 용량 전극을 구비하는 것을 특징으로 하는 표시 장치.
- 제1항에 있어서,상기 축적 용량 전극의 패턴은 상기 개구부의 저부보다 크게 형성되고, 상기 축적 용량 전극의 외주부의 엣지가 상기 개구부의 경사부의 상기 버퍼막 상에 배치되고, 상기 축적 용량 전극의 외주부의 결정 입경이 그 내측의 결정 입경보다 큰 것을 특징으로 하는 표시 장치.
- 제1항에 있어서,상기 축적 용량 전극의 패턴은 상기 개구부의 저부보다 크게 형성되고, 상기 축적 용량 전극의 외주부의 엣지가 상기 개구부의 외측의 상기 버퍼막 상에 배치되고, 상기 축적 용량 전극의 외주부의 결정 입경이 그 내측의 결정 입경보다 큰 것을 특징으로 하는 표시 장치.
- 제1항에 있어서,상기 버퍼막과 상기 하층 축적 용량막의 막 두께의 합이 300 ㎚ 이상인 것을 특징으로 하는 표시 장치.
- 제1항에 있어서,상기 하층 축적 용량막의 막 두께는 100 ㎚ 이하인 것을 특징으로 하는 표시 장치.
- 제2항에 있어서,상기 축적 용량 전극의 외주부는, 상기 상층 축적 용량 전극과 중첩되지 않는 것을 특징으로 하는 표시 장치.
- 제3항에 있어서,상기 축적 용량 전극의 외주부는, 상기 상층 축적 용량 전극과 중첩되지 않는 것을 특징으로 하는 표시 장치.
- 기판 상에 박막 트랜지스터와, 이 박막 트랜지스터를 통해서 화소 전극에 인가되는 표시 신호를 유지하는 축적 용량을 구비하는 표시 장치의 제조 방법으로서,상기 기판 상에 차광층 및 하층 축적 용량 전극을 형성하는 공정과,상기 차광층 및 하층 축적 용량 전극을 덮어, 버퍼막을 형성하는 공정과,상기 하층 축적 용량 전극 상의 상기 버퍼막을 선택적으로 에칭하여 개구부를 형성하는 공정과,상기 개구부를 통해서 상기 하층 축적 용량 전극 상에 상기 버퍼막보다 얇은 하층 축적 용량막을 형성하는 공정과,상기 버퍼막 및 상기 하층 축적 용량막 상에 아몰퍼스 실리콘층을 형성하고, 이 아몰퍼스 실리콘층에 대해 레이저 어닐링을 행함으로써 이를 폴리실리콘층으로 하는 공정과,상기 폴리실리콘층을 패터닝하여, 축적 용량 전극을 형성하는 공정과,상기 폴리실리콘층을 덮는 게이트 절연막, 상기 축적 용량 전극을 덮는 상층 축적 용량막을 형성하는 공정과,상기 게이트 절연막 상에 게이트 전극을 형성하고, 상기 상층 축적 용량막 상에 상층 축적 용량 전극을 형성하는 공정을 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제8항에 있어서,상기 축적 용량 전극을 형성하는 정도는, 상기 개구부의 저부보다 크고, 상기 축적 용량 전극의 엣지가 상기 개구부의 경사부의 상기 버퍼막 상에 위치하도록 형성되는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제8항에 있어서,상기 축적 용량 전극을 형성하는 정도는, 상기 개구부의 저부보다 크고, 상기 축적 용량 전극의 엣지가 상기 개구부의 외측의 상기 버퍼막 상에 위치하도록 형성되는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제8항에 있어서,상기 버퍼막과 상기 하층 축적 용량막의 막 두께의 합이 300 ㎚ 이상인 것을 특징으로 하는 표시 장치의 제조 방법.
- 제8항에 있어서,상기 하층 축적 용량막의 막 두께는 100 ㎚ 이하인 것을 특징으로 하는 표시 장치의 제조 방법.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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JP2006249671 | 2006-09-14 | ||
JP2006249670 | 2006-09-14 | ||
JPJP-P-2006-00249670 | 2006-09-14 | ||
JPJP-P-2006-00249671 | 2006-09-14 | ||
JP2007179898A JP4179393B2 (ja) | 2006-09-14 | 2007-07-09 | 表示装置及びその製造方法 |
JPJP-P-2007-00179898 | 2007-07-09 |
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KR20080025011A KR20080025011A (ko) | 2008-03-19 |
KR100918138B1 true KR100918138B1 (ko) | 2009-09-17 |
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KR1020070093062A KR100918138B1 (ko) | 2006-09-14 | 2007-09-13 | 표시 장치 및 그 제조 방법 |
Country Status (4)
Country | Link |
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US (1) | US8071985B2 (ko) |
JP (1) | JP4179393B2 (ko) |
KR (1) | KR100918138B1 (ko) |
TW (1) | TW200813581A (ko) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
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US8575614B2 (en) * | 2007-04-25 | 2013-11-05 | Sharp Kabushiki Kaisha | Display device |
KR101476817B1 (ko) | 2009-07-03 | 2014-12-26 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 트랜지스터를 갖는 표시 장치 및 그 제작 방법 |
KR101870460B1 (ko) | 2009-07-18 | 2018-06-22 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 반도체 장치의 제조 방법 |
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JP4179393B2 (ja) | 2008-11-12 |
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US20080067519A1 (en) | 2008-03-20 |
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US8071985B2 (en) | 2011-12-06 |
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