JP2010040848A - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 21
- 239000004065 semiconductor Substances 0.000 claims abstract description 67
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 51
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 47
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000000969 carrier Substances 0.000 claims description 4
- 239000010408 film Substances 0.000 description 53
- 238000002161 passivation Methods 0.000 description 14
- 239000000758 substrate Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 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
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
- H01L27/1222—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 crystalline structure of the active layer
- H01L27/1229—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 crystalline structure of the active layer with different crystal properties within a device or between different devices
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
- H01L27/1251—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
Abstract
【解決手段】最下層には、ゲート電極103が縦方向に細長く形成されている。このゲート電極103の上に、図示しないゲート絶縁膜104を挟んでpoly−Si層107およびa−Si層108からなる半導体層が形成されている。半導体層の上に、ソース電極110あるいはドレイン電極111が形成されている。ソース電極110あるいはドレイン電極111と半導体層の間にはn+Si層が形成されている。ソース電極110あるいはドレイン電極111の端部EDは、半導体層の端部ESよりも内側に形成されているので、半導体層の端部ESにおけるリーク電流を無くすことが出来る。
【選択図】図2
Description
「特許文献1」には、プロセスが複雑になるのを防止するために、poly−Siを用いたTFTにおいてもボトムゲートを用いる構成が記載されている。この構成はゲート電極の上に形成されたゲート絶縁膜の上に、先ず、チャンネルとなるpoly−Si層を形成し、その上にa−Si層を形成する。a−Si層の上にはn+層のコンタクト層が形成され、その上にソース/ドレイン電極(SD電極)が形成される。poly−Siをチャンネルに用いたTFTをこのような構成とすることによって、a−Siをチャンネルに用いたTFTとで共通のプロセスが多くなり、プロセスが単純化する。
Claims (6)
- 画素電極と画素用TFTがマトリクス状に形成された表示領域と、前記表示領域の周辺に駆動回路用TFTを含む駆動回路が形成された表示装置であって、
前記画素用TFTの半導体層はa−Si層のみから形成されており、
前記駆動回路用TFTは、キャリアが移動する第1の方向と、前記第1の方向と直角方向の第2の方向を有し、前記駆動回路用TFTはゲート電極と、前記ゲート電極を覆うゲート絶縁膜と、前記ゲート絶縁膜の上にpoly−Si層とa−Si層がこの順で積層された半導体層を有し、前記半導体層の一方の端部にはn+Si層とソース電極が配置され、前記n+Si層と前記ソース電極は前記半導体層の一方の側壁部を覆い、前記半導体の他方の端部にはn+Si層とドレイン電極が配置され、前記n+Si層と前記ドレイン電極は前記半導体層の他方の側壁部を覆い、
前記駆動回路用TFTの前記半導体層の前記一方の端部および前記他方の端部は、前記第2の方向においては、前記ソース電極の端部および前記ドレイン電極の端部よりも外側に存在していることを特徴とする液晶表示装置。 - 前記駆動回路用TFTにおいて、前記半導体層は、前記第2の方向の寸法が前記第1の方向の寸法よりも大きいことを特徴とする請求項1に記載の液晶表示装置。
- 前記駆動回路用TFTにおいて、前記ゲート電極の端部は、前記第2の方向において、前記半導体層よりも外側に存在していることを特徴とする請求項1に記載の液晶表示装置。
- 画素電極と画素用TFTがマトリクス状に形成された表示領域と、前記表示領域の周辺に駆動回路用TFTを含む駆動回路が形成された表示装置であって、
前記画素用TFTの半導体層はa−Si層のみから形成されており、
前記駆動回路用TFTは、キャリアが移動する第1の方向と、前記第1の方向と直角方向の第2の方向を有し、前記駆動回路用TFTはゲート電極と、前記ゲート電極を覆うゲート絶縁膜と、前記ゲート絶縁膜の上にpoly−Si層とa−Si層がこの順で積層された半導体層を有し、前記半導体層の一方の端部にはn+Si層とソース電極が配置され、前記n+Si層と前記ソース電極は前記半導体層の一方の側壁部を覆い、前記半導体の他方の端部にはn+Si層とドレイン電極が配置され、前記n+Si層と前記ドレインの端部は前記半導体層の他方の側壁部を覆い、
前記駆動回路用TFTの前記半導体層の前記第2の方向の幅は、前記ソース電極または前記ドレイン電極の幅よりも大きいことを特徴とする液晶表示装置。 - 前記駆動回路用TFTにおいて、前記駆動回路用TFTの前記半導体層は、前記第2の方向の寸法が前記第1の方向の寸法よりも大きいことを特徴とする請求項4に記載の液晶表示装置。
- 前記駆動回路用TFTにおいて、前記ゲート電極の幅は、前記第2の方向において、前記半導体層の幅よりも大きいことを特徴とする請求項4に記載の液晶表示装置。
Priority Applications (2)
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JP2008203188A JP2010040848A (ja) | 2008-08-06 | 2008-08-06 | 液晶表示装置 |
US12/534,904 US7994505B2 (en) | 2008-08-06 | 2009-08-04 | Liquid crystal display device |
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JP2008203188A JP2010040848A (ja) | 2008-08-06 | 2008-08-06 | 液晶表示装置 |
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JP (1) | JP2010040848A (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011161910A1 (ja) * | 2010-06-22 | 2011-12-29 | パナソニック株式会社 | 発光表示装置及びその製造方法 |
JP2012028473A (ja) * | 2010-07-21 | 2012-02-09 | Panasonic Corp | 薄膜トランジスタ及びこれを用いた表示装置、並びに、薄膜トランジスタの製造方法 |
JP2016219822A (ja) * | 2011-01-12 | 2016-12-22 | 株式会社半導体エネルギー研究所 | トランジスタ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5111167B2 (ja) * | 2008-03-06 | 2012-12-26 | 株式会社ジャパンディスプレイイースト | 液晶表示装置 |
JP5488136B2 (ja) * | 2010-04-05 | 2014-05-14 | セイコーエプソン株式会社 | 電気光学装置及び電子機器並びにトランジスター |
CN105845737B (zh) * | 2016-05-17 | 2019-07-02 | 京东方科技集团股份有限公司 | 薄膜晶体管及其制造方法、阵列基板、显示装置 |
US10651257B2 (en) | 2017-12-18 | 2020-05-12 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Array substrate and manufacturing method thereof |
CN108039352B (zh) * | 2017-12-18 | 2020-06-05 | 武汉华星光电半导体显示技术有限公司 | 阵列基板及其制造方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0982978A (ja) * | 1995-09-20 | 1997-03-28 | Hitachi Ltd | 半導体装置及びこれを用いた液晶表示装置 |
JP2007121788A (ja) * | 2005-10-31 | 2007-05-17 | Hitachi Displays Ltd | アクティブマトリクス基板およびそれを用いた液晶表示装置 |
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JP2814319B2 (ja) | 1991-08-29 | 1998-10-22 | 株式会社日立製作所 | 液晶表示装置及びその製造方法 |
KR100785020B1 (ko) * | 2006-06-09 | 2007-12-12 | 삼성전자주식회사 | 하부 게이트 박막 트랜지스터 및 그 제조방법 |
JP5226259B2 (ja) * | 2007-08-21 | 2013-07-03 | 株式会社ジャパンディスプレイイースト | 液晶表示装置 |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0982978A (ja) * | 1995-09-20 | 1997-03-28 | Hitachi Ltd | 半導体装置及びこれを用いた液晶表示装置 |
JP2007121788A (ja) * | 2005-10-31 | 2007-05-17 | Hitachi Displays Ltd | アクティブマトリクス基板およびそれを用いた液晶表示装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011161910A1 (ja) * | 2010-06-22 | 2011-12-29 | パナソニック株式会社 | 発光表示装置及びその製造方法 |
US8575611B2 (en) | 2010-06-22 | 2013-11-05 | Panasonic Corporation | Light-emitting display device and manufacturing method for light-emitting display device |
JP5443588B2 (ja) * | 2010-06-22 | 2014-03-19 | パナソニック株式会社 | 発光表示装置及びその製造方法 |
JP2012028473A (ja) * | 2010-07-21 | 2012-02-09 | Panasonic Corp | 薄膜トランジスタ及びこれを用いた表示装置、並びに、薄膜トランジスタの製造方法 |
JP2016219822A (ja) * | 2011-01-12 | 2016-12-22 | 株式会社半導体エネルギー研究所 | トランジスタ |
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