JP5090693B2 - 表示装置とその製造方法 - Google Patents
表示装置とその製造方法 Download PDFInfo
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- JP5090693B2 JP5090693B2 JP2006238500A JP2006238500A JP5090693B2 JP 5090693 B2 JP5090693 B2 JP 5090693B2 JP 2006238500 A JP2006238500 A JP 2006238500A JP 2006238500 A JP2006238500 A JP 2006238500A JP 5090693 B2 JP5090693 B2 JP 5090693B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000010408 film Substances 0.000 claims description 153
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 92
- 239000002184 metal Substances 0.000 claims description 84
- 239000000758 substrate Substances 0.000 claims description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 239000010409 thin film Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 2
- 229920005591 polysilicon Polymers 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 42
- 239000010410 layer Substances 0.000 description 23
- 239000004065 semiconductor Substances 0.000 description 23
- 239000011229 interlayer Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 229910052814 silicon oxide Inorganic materials 0.000 description 10
- 238000002161 passivation Methods 0.000 description 9
- 229910052581 Si3N4 Inorganic materials 0.000 description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 238000005224 laser annealing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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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
-
- 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
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
-
- 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
-
- 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
- H01L29/78651—Silicon transistors
- H01L29/7866—Non-monocrystalline silicon transistors
- H01L29/78672—Polycrystalline or microcrystalline silicon transistor
- H01L29/78675—Polycrystalline or microcrystalline silicon transistor with normal-type structure, e.g. with top gate
-
- 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
- H01L27/124—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 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
-
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Description
本実施の形態は、表示装置におけるキャパシタの上部電極を、下部電極の縁部を覆うように形成することで、漏れ電流の低減を図るものであるが、ここでは先ず一般的な表示装置の構成について説明しておく。表示装置は、絶縁基板の表示領域に設けられた複数の平行に設けられた走査信号線と、この走査信号線に交差するように設けられた複数の平行に設けられた表示信号線とを有する。隣接する走査信号線と表示信号線とで囲まれた領域が画素となり、よって、画素は表示領域にマトリクス状に配列される。また、絶縁基板には、前記走査信号線を駆動する走査信号駆動回路及び前記表示信号線を駆動する表示信号駆動回路とが設けられている。上記画素内には、少なくとも1つの薄膜トランジスタ(TFT)及びキャパシタが形成されている。
本実施の形態2にかかる表示装置について図4を参照して説明する。図4は、実施の形態2にかかる表示装置の平面図である。図4に示す実施の形態2にかかる表示装置において、図2に示す実施の形態1と同一構成要素には同一の符号を付し、その詳細な説明は省略する。
本実施の形態3にかかる表示装置について図5(a)乃至図5(c)を参照して説明する。図5(a)は、実施の形態3にかかる表示装置の平面図である。図5(b)は、実施の形態3にかかる表示装置においてゲートメタル電極まで形成したものを示す断面図であって、図5(a)に示すB−B線における断面図である。そして、図5(c)は図5(b)にさらに配線層まで形成した場合を示す断面図を示す。図5(a)乃至図5(c)に示す実施の形態3にかかる表示装置において、図2に示す実施の形態1と同一構成要素には同一の符号を付し、その詳細な説明は省略する。
Claims (7)
- 絶縁基板と、前記絶縁基板上に形成された多結晶シリコン電極と、
前記多結晶シリコン電極上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に前記多結晶シリコン電極と対向する位置に形成されたゲートメタル電極とを有し、
前記ゲートメタル電極は、該ゲートメタル電極の端部に形成された凹部よりなる開口部を有し、上面視で、前記開口部の形成部を除いて前記多結晶シリコン電極の縁部の全部を覆うように形成され、
前記開口部に前記多結晶シリコン電極と配線層を接続するコンタクトホールが形成されている表示装置。 - 前記ゲートメタル電極は、上面視で、前記多結晶シリコン電極の縁部の四隅および前記開口部の形成部以外を覆うように形成され、該ゲートメタル電極の端部が上面視で前記多結晶シリコン電極よりも外側まで延在して形成されている
ことを特徴とする請求項1記載の表示装置。 - 前記多結晶シリコン電極端部から前記ゲートメタル電極端部の距離をY、多結晶シリコン電極膜厚をa、ゲート絶縁膜厚をb、ゲートメタル電極膜厚をcとした場合、Y≧(a+b+c)/2を満たす
ことを特徴とする請求項1又は2記載の表示装置。 - 前記多結晶シリコン電極端部から前記ゲートメタル電極端部の距離をY、多結晶シリコン電極膜厚をa、ゲート絶縁膜厚をb、ゲートメタル電極膜厚をcとした場合、c>a、bを満たす
ことを特徴とする請求項3記載の表示装置。 - 前記絶縁基板と前記多結晶シリコン電極との間に下地膜を有する
ことを特徴とする請求項1乃至4のいずれか1項記載の表示装置。 - 基板上に多結晶シリコン薄膜を形成する工程と、
前記多結晶シリコン薄膜上に前記ゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜上に導電膜を形成し、パターニングしてゲートメタル電極を形成する工程と、
前記ゲートメタル電極の端部に凹部よりなる開口部を形成する工程と、
前記開口部に前記多結晶シリコン電極と配線層を接続するコンタクトホールを形成する工程とを有し、
前記ゲートメタル電極を形成する工程では、上面視で、前記開口部の形成部を除いて前記多結晶シリコン電極の縁部の全部を前記ゲートメタル電極が覆うように形成することを特徴とする表示装置の製造方法。 - 前記ゲートメタル電極を形成する工程では、上面視で、前記多結晶シリコン電極の縁部の四隅および開口部の形成部以外を覆い、該ゲートメタル電極の端部が上面視で前記多結晶シリコン電極よりも外側まで延在するように、前記ゲートメタル電極を形成することを特徴とする請求項6記載の表示装置の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006238500A JP5090693B2 (ja) | 2006-09-04 | 2006-09-04 | 表示装置とその製造方法 |
KR1020070085931A KR100903791B1 (ko) | 2006-09-04 | 2007-08-27 | 표시 장치와 그 제조 방법 |
TW096131801A TW200818512A (en) | 2006-09-04 | 2007-08-28 | Display apparatus and manufacturing method of the same |
US11/847,873 US20080054267A1 (en) | 2006-09-04 | 2007-08-30 | Display apparatus and manufacturing method of the same |
CNA2007101482660A CN101140941A (zh) | 2006-09-04 | 2007-09-04 | 显示装置及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006238500A JP5090693B2 (ja) | 2006-09-04 | 2006-09-04 | 表示装置とその製造方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008058850A JP2008058850A (ja) | 2008-03-13 |
JP2008058850A5 JP2008058850A5 (ja) | 2009-10-01 |
JP5090693B2 true JP5090693B2 (ja) | 2012-12-05 |
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Application Number | Title | Priority Date | Filing Date |
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JP2006238500A Active JP5090693B2 (ja) | 2006-09-04 | 2006-09-04 | 表示装置とその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080054267A1 (ja) |
JP (1) | JP5090693B2 (ja) |
KR (1) | KR100903791B1 (ja) |
CN (1) | CN101140941A (ja) |
TW (1) | TW200818512A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8603870B2 (en) | 1996-07-11 | 2013-12-10 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method of manufacturing the same |
TW548686B (en) * | 1996-07-11 | 2003-08-21 | Semiconductor Energy Lab | CMOS semiconductor device and apparatus using the same |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06167722A (ja) * | 1992-11-30 | 1994-06-14 | Sharp Corp | アクティブマトリクス基板及びその製造方法 |
JP3973787B2 (ja) * | 1997-12-31 | 2007-09-12 | 三星電子株式会社 | 液晶表示装置及びその製造方法 |
JP3520842B2 (ja) | 1999-07-16 | 2004-04-19 | セイコーエプソン株式会社 | 電気光学装置、及びこれを用いた電子機器 |
JP2001223366A (ja) | 2000-02-10 | 2001-08-17 | Seiko Epson Corp | アクティブマトリクス基板及びその製造方法、並びに電気光学装置 |
JP2002359252A (ja) * | 2000-09-29 | 2002-12-13 | Toshiba Corp | 平面表示装置及びその製造方法 |
JP2002122881A (ja) * | 2000-10-13 | 2002-04-26 | Nec Corp | 液晶表示装置及びその製造方法 |
US6825496B2 (en) * | 2001-01-17 | 2004-11-30 | Semiconductor Energy Laboratory Co., Ltd. | Light emitting device |
KR100495701B1 (ko) * | 2001-03-07 | 2005-06-14 | 삼성에스디아이 주식회사 | 유기 전계 발광 표시장치의 제조방법 |
JP2003036041A (ja) * | 2001-07-23 | 2003-02-07 | Toshiba Corp | 平面表示装置 |
KR100566894B1 (ko) * | 2001-11-02 | 2006-04-04 | 네오폴리((주)) | Milc를 이용한 결정질 실리콘 tft 패널 및 제작방법 |
JP2005079283A (ja) * | 2003-08-29 | 2005-03-24 | Seiko Epson Corp | 薄膜半導体装置及びその製造方法、電気光学装置、並びに電子機器 |
JP2006108149A (ja) * | 2004-09-30 | 2006-04-20 | Seiko Epson Corp | 薄膜半導体装置、電気光学装置、電子機器、薄膜半導体装置の製造方法、及び薄膜電子装置 |
-
2006
- 2006-09-04 JP JP2006238500A patent/JP5090693B2/ja active Active
-
2007
- 2007-08-27 KR KR1020070085931A patent/KR100903791B1/ko not_active IP Right Cessation
- 2007-08-28 TW TW096131801A patent/TW200818512A/zh unknown
- 2007-08-30 US US11/847,873 patent/US20080054267A1/en not_active Abandoned
- 2007-09-04 CN CNA2007101482660A patent/CN101140941A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20080021517A (ko) | 2008-03-07 |
KR100903791B1 (ko) | 2009-06-19 |
US20080054267A1 (en) | 2008-03-06 |
TW200818512A (en) | 2008-04-16 |
CN101140941A (zh) | 2008-03-12 |
JP2008058850A (ja) | 2008-03-13 |
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