KR100724482B1 - 액정표시소자 및 그 제조방법 - Google Patents
액정표시소자 및 그 제조방법 Download PDFInfo
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- KR100724482B1 KR100724482B1 KR1020040089448A KR20040089448A KR100724482B1 KR 100724482 B1 KR100724482 B1 KR 100724482B1 KR 1020040089448 A KR1020040089448 A KR 1020040089448A KR 20040089448 A KR20040089448 A KR 20040089448A KR 100724482 B1 KR100724482 B1 KR 100724482B1
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 45
- 239000010410 layer Substances 0.000 claims abstract description 214
- 239000013545 self-assembled monolayer Substances 0.000 claims abstract description 65
- 239000002094 self assembled monolayer Substances 0.000 claims abstract description 64
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 36
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 33
- 229920005591 polysilicon Polymers 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 19
- 239000011229 interlayer Substances 0.000 claims description 17
- PYJJCSYBSYXGQQ-UHFFFAOYSA-N trichloro(octadecyl)silane Chemical compound CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl PYJJCSYBSYXGQQ-UHFFFAOYSA-N 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 6
- 238000000059 patterning Methods 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 239000007943 implant Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 abstract 1
- 239000010408 film Substances 0.000 description 23
- 238000002425 crystallisation Methods 0.000 description 21
- 239000010409 thin film Substances 0.000 description 18
- 230000008025 crystallization Effects 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 238000002161 passivation Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000005499 laser crystallization Methods 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007715 excimer laser crystallization Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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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
- H01L29/66—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
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66757—Lateral single gate single channel transistors with non-inverted structure, i.e. the channel layer is formed before the gate
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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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66765—Lateral single gate single channel transistors with inverted structure, i.e. the channel layer is formed after the gate
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- Microelectronics & Electronic Packaging (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Thin Film Transistor (AREA)
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Abstract
Description
도 3은 본 발명의 폴리실리콘 박막트랜지스터의 구조를 나타내는 단면도이다.
Claims (18)
- 기판상에 형성되는 액티브층과;상기 액티브층상에 형성되고, 상기 액티브층 계면을 무극성 및 소수성으로 만드는 자기조립단분자막과;상기 자기조립단분자막상에 형성되는 게이트절연층과;상기 게이트절연층상에 형성되는 게이트전극과;상기 게이트전극상에 형성되는 층간절연층과;상기 층간절연층상에 형성되는 소스 및 드레인전극과;상기 소스 및 드레인전극 상에 형성되는 보호층과;상기 보호층상에 형성되는 화소전극을 구비하는 것을 특징으로 하는 액정표시소자.
- 삭제
- 제 1 항에 있어서, 상기 자기조립단분자막은 상기 액티브층의 일부를 구성하는 채널영역과 상기 게이트절연층 사이에 형성되는 것을 특징으로 하는 액정표시소자.
- 제 1 항에 있어서, 상기 액티브층은 폴리실리콘층인 것을 특징으로 하는 액 정표시소자.
- 제 1항에 있어서, 상기 자기조립단분자막은 헥사메틸디실라젠(hexamethyldisilazene,HMDS) 또는 옥타데실트리클로로실란 (Octadecyltrichlorosilane,OTS)을 포함하는 것을 특징으로 하는 액정표시소자.
- 기판상에 형성되는 게이트전극과;상기 게이트전극상에 형성되는 게이트절연층과;상기 게이트절연층상에 형성되고, 액티브층 계면을 무극성 및 소수성으로 만드는 자기조립단분자막과;상기 자기조립단분자막 상에 형성되는 비정질실리콘의 액티브층과;상기 액티브층의 양단에 연결되는 소스 및 드레인전극과;상기 드레인전극과 연결되는 화소전극을 구비하는 것을 특징으로 하는 액정표시소자.
- 제 6항에 있어서, 상기 자기조립단분자막은 헥사메틸디실라젠(hexamethyldisilazene,HMDS) 또는 옥타데실트리클로로실란 (Octadecyltrichlorosilane,OTS)을 포함하는 것을 특징으로 하는 액정표시소자.
- 삭제
- 삭제
- 삭제
- 기판상에 버퍼층을 형성하는 단계;상기 버퍼층상에 액티브층을 형성하는 단계;상기 액티브층상에 침잠방법, 코팅방법 또는 프린팅방법에 의해 형성되고, 상기 액티브층의 계면을 무극성 및 소수성으로 만드는 조립단분자막을 형성하는 단계;상기 자기조립단분자막 상에 게이트절연층을 형성하는 단계;상기 게이트절연층상에 게이트전극을 형성하는 단계;상기 게이트전극을 마스크로 적용하여 상기 액티브층에 불순물 이온을 주입하여 소스 및 드레인영역을 형성하는 단계;상기 게이트전극상에 층간절연층을 형성하는 단계;상기 층간절연층상에 소스 및 드레인전극을 형성하는 단계;상기 드레인전극과 연결되는 화소전극을 형성하는 단계를 포함하는 것을 특징으로 하는 액정표시소자 제조방법.
- 제 11항에 있어서, 상기 액티브층을 형성하는 단계는상기 버퍼층상에 비정질실리콘층을 형성하는 단계;상기 비정질실리콘층을 결정화하는 단계;상기 결정화된 실리콘층을 패터닝하는 단계를 포함하는 것을 특징으로 하는 액정표시소자 제조방법.
- 제 11항에 있어서, 상기 자기조립단분자막을 형성하는 단계는상기 결정화된 실리콘층상에 자기조립단분자막을 형성하는 단계;상기 자기조립단분자막과 상기 결정화된 실리콘층을 동시에 패터닝하는 단계를 포함하는 것을 특징으로 하는 액정표시소자 제조방법.
- 삭제
- 제 11항에 있어서, 상기 자기조립단분자막을 형성하는 단계는 헥사메틸디실라젠(hexamethyldisilazene,HMDS) 또는 옥타데실트리클로로실란 (Octadecyltrichlorosilane,OTS)을 포함하는 톨루엔 용액을 코팅방법, 침잠방법 또는 프린팅방법에 의해 액티브층과 게이트절연층사이에 형성하는 단계를 포함하는 것을 특징으로 하는 액정표시소자 제조방법.
- 기판상에 게이트전극을 형성하는 단계;상기 게이트전극상에 게이트절연층을 형성하는 단계;상기 게이트절연층상에 침잠방법, 코팅방법 또는 프린팅방법에 의해 형성되고, 액티브층의 계면을 무극성 및 소수성으로 만드는 자기조립단분자막을 형성하는 단계;상기 자기조립단분자막 상에 액티브층을 형성하는 단계;상기 액티브층의 양단에 연결되는 소스 및 드레인전극을 형성하는 단계;상기 드레인전극과 연결되는 화소전극을 형성하는 단계를 포함하는 것을 특징으로 하는 액정표시소자 제조방법.
- 삭제
- 제 16항에 있어서, 상기 자기조립단분자막 형성 단계는 헥사메틸디실라젠(hexamethyldisilazene,HMDS) 또는 옥타데실트리클로로실란 (Octadecyltrichlorosilane,OTS)을 포함하는 톨루엔 용액을 코팅방법, 침잠방법 또는 프린팅방법에 의해 상기 게이트절연층상에 형성하는 것을 특징으로 하는 액정표시소자 제조방법.
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KR101232170B1 (ko) * | 2006-06-30 | 2013-02-12 | 엘지디스플레이 주식회사 | 폴리실리콘 박막트랜지스터의 제조방법 및 이를 이용한액정표시소자의 제조방법 |
KR101351403B1 (ko) * | 2007-12-31 | 2014-01-15 | 엘지디스플레이 주식회사 | 박막 트랜지스터, 이의 제조 방법 및 이를 이용한 표시장치의 제조 방법 |
Citations (4)
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KR20020084427A (ko) * | 2001-05-02 | 2002-11-09 | 송정근 | 고성능 유기 박막 트랜지스트의 소자 구조 및 그 제조방법 |
JP2003092407A (ja) | 2001-09-18 | 2003-03-28 | Sharp Corp | トランジスタ及びそれを用いた表示装置 |
KR20040002914A (ko) * | 2001-06-26 | 2004-01-07 | 샤프 가부시키가이샤 | 스위칭 소자 및 그를 구비하는 표시 장치 |
KR20040057030A (ko) * | 2002-12-24 | 2004-07-01 | 한국전자통신연구원 | 유기물 전계효과 트랜지스터의 제조 방법 |
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Patent Citations (4)
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KR20020084427A (ko) * | 2001-05-02 | 2002-11-09 | 송정근 | 고성능 유기 박막 트랜지스트의 소자 구조 및 그 제조방법 |
KR20040002914A (ko) * | 2001-06-26 | 2004-01-07 | 샤프 가부시키가이샤 | 스위칭 소자 및 그를 구비하는 표시 장치 |
JP2003092407A (ja) | 2001-09-18 | 2003-03-28 | Sharp Corp | トランジスタ及びそれを用いた表示装置 |
KR20040057030A (ko) * | 2002-12-24 | 2004-07-01 | 한국전자통신연구원 | 유기물 전계효과 트랜지스터의 제조 방법 |
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