JPH0824193B2 - 平板型光弁駆動用半導体装置の製造方法 - Google Patents
平板型光弁駆動用半導体装置の製造方法Info
- Publication number
- JPH0824193B2 JPH0824193B2 JP27743690A JP27743690A JPH0824193B2 JP H0824193 B2 JPH0824193 B2 JP H0824193B2 JP 27743690 A JP27743690 A JP 27743690A JP 27743690 A JP27743690 A JP 27743690A JP H0824193 B2 JPH0824193 B2 JP H0824193B2
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- single crystal
- forming
- film
- crystal semiconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004065 semiconductor Substances 0.000 title claims description 49
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000010408 film Substances 0.000 claims description 60
- 239000010409 thin film Substances 0.000 claims description 45
- 239000000758 substrate Substances 0.000 claims description 44
- 239000013078 crystal Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 7
- 238000000059 patterning Methods 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
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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
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13454—Drivers integrated on the active matrix substrate
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- 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
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
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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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
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- H01L21/84—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
- H01L21/86—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body the insulating body being sapphire, e.g. silicon on sapphire structure, i.e. SOS
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- 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
- H01L27/1203—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 the substrate comprising an insulating body on a semiconductor body, e.g. SOI
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- 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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- 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
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- 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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- 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
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- H01L29/78648—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate arranged on opposing sides of the channel
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- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- 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
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- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Computer Hardware Design (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
Description
投影型表示装置に好適な平板型光弁駆動用半導体装置の
製造方法に関する。
ラス基板を用い、その上に形成された各画素電極に画素
選択用スイッチングトランジスタをそれぞれ設けて、独
立に映像信号を印加することにより、画像の表示をおこ
なっていた。
に蒸着、スパッタなどの方法によりシリコン薄膜を形成
していた。この製造方法のため、シリコン薄膜として、
単結晶薄膜を形成することはできず、α−Si:H、多結晶
シリコン薄膜などが用いられていた。
欠陥などの影響を無視することができず、特に、投影型
表示装置のように小型化を要求されるものにおいては好
ましい薄膜素材とはいえなかった。
するものである関係から、光の入射が避けられず、これ
によるリーク電流の増加が起こるなどで満足するものが
得られなかった。
上に単結晶半導体薄膜からなるスイッチング素子を搭載
し、かつ、入射光の影響を除去できる遮光層を形成した
平板型光弁駆動用半導体装置を製造する簡単な方法を提
供することを目的とする。
採用した。
性薄膜、絶縁膜、及び単結晶半導体薄膜を含む積層構造
とからなる複合基板を準備する第1工程と、 前記積層構造を所望の形状にパタニングして残し、他
の積層部分を除去する第2工程と、 前記パタニングされた積層構造の単結晶半導体薄膜を
エッチングし、所望の形状の素子領域を形成し、引き続
いて支持基板に酸化膜を形成する第3工程と、 前記素子領域の上にゲート電極を形成し、さらに単結
晶半導体薄膜にドレイン領域、ソース領域を形成しスイ
ッチング素子を形成する第4工程と、 第4工程に引き続き、前記第2工程により積層部分が
除去された支持基板上に、前記スイッチング素子に接続
された透明電極を形成する第5工程とからなることを特
徴とする。
ことを特徴とする。
導体薄膜を成長させる第1工程と、 前記単結晶半導体薄膜を所望の形状にパタニングして
残し、他の部分を除去する第2工程と、 前記支持基板全体を、前記単結晶半導体薄膜の表面を
絶縁膜で被覆し、前記絶縁膜の一部を除去して前記単結
晶薄膜の一部表面を露出する第3工程と、 第3工程に続いて、前記一部表面を露出した前記単結
晶半導体薄膜を種として前記絶縁膜上に第2の単結晶半
導体薄膜をエピタキシャル成長させる第4工程と、 前記第2の半導体単結晶薄膜に所望の素子領域を形成
し、他の部分を除去し絶縁膜を露出する第5工程と、 前記素子領域の上に順次ゲート酸化膜、主ゲート電極
を形成し、さらに第2の単結晶半導体薄膜にドレイン領
域、ソース領域を形成しスイッチング素子を形成する第
6工程と、 前記第6工程に引き続き、前記スイッチング素子に接
続された透明電極を形成する第7工程とからなることを
特徴とする。
(A)に示す複合基板が先ず準備される。1は石英板か
らなる支持基板、2は積層構造で、この両者で複合基板
が形成されている。
24は支持基板1の上の下地膜で、化学気相成長法やスパ
ッタリング法により形成された酸化シリコン層である。
21は遮光性薄膜で、化学気相成長法により堆積されたポ
リシリコン膜である。22は絶縁膜で化学成長法により形
成された酸化シリコン膜、23は半導体薄膜でシリコン単
結晶からなる半導体薄膜である。半導体薄膜23は、シリ
コンウエハの表面を精密に平滑仕上げし、その面を絶縁
膜22に対して重ね合わせ熱加熱処理することにより両者
を強固に固着する。この状態で、シリコンウエハを所望
の厚さになるまで研磨加工することにより形成される。
シリコンウエハは、高品質のものが好ましく、その結晶
方位は「100」0.0±1.0゜の範囲の一様性を有し、単結
晶格子欠陥密度は500個/cm2以下のものが用いられる。
厚みの加工は研磨加工に代えてエッチング処理によるこ
ともできる。
層、10はゲート酸化膜、23は半導体薄膜、26は感光膜で
ある。これの形成方法は、上述の複合基板の上を所望の
形状にパターニングした感光膜26で被覆し、これをマス
クとして選択的に下地膜24を残して積層構造2をエッチ
ングすることにより得られる。
域の形状に合わせてパタニングされた感光膜26をマスク
として半導体薄膜23を選択的にエッチングすることによ
り得られる。
光膜26を除去した後、露出した半導体薄膜23の表面を含
めて熱酸化膜形成処理を施す。これにより形成された半
導体薄膜23の表面の酸化膜がゲート酸化膜8となる。
の上に主ゲート電極9を形成する工程で、素子領域25を
覆うように化学気相成長法により多結晶シリコン膜を堆
積し、この多結晶シリコン膜を所定の形状にパターニン
グされた感光膜(図示しない)をマスクとして選択的に
エッチングして主ゲート電極9を形成する。
ス領域6を形成しスイッチング素子を形成する工程で、
主ゲート電極9をマスクとしてゲート酸化膜8を介して
不純物のイオン注入を行い、半導体薄膜23の中にドレイ
ン領域5及びソース領域6を形成する。この結果、主ゲ
ート電極9の下はマスクされて不純物が注入されずチャ
ネル領域7となる。
全体を保護膜27で覆う。保護膜27は酸化シリコンなど透
明性のある物質が選ばれる。
る工程で、ソース領域6の上にあるゲート酸化膜8の一
分を除去してコンタクトホールを形成しこの部分を覆う
ように透明画素電極3を形成する。画素電極3はITOの
ような透明材料から構成される。その後、図示していな
いが、ドレイン領域5にもコンタクトホールを形成して
これに接続される信号線7を形成する。
光弁駆動用半導体装置を示す。スイッチング素子は単結
晶シリコンで形成されているので、電子移動度が高く、
しかも結晶欠陥が少たいために小型化に有利であり、ま
た、主ゲート電極9及び遮光層11は光学的に不透明であ
るポリシリコンから構成されているので、上下方向の何
れからの入射光も遮断できチャネル領域に流れる電流を
防止することができる。
図(A)に示す基板101が先ず準備される。基板101は単
結晶酸化アルミニウムから構成されている。
成長法により単結晶シリコン膜102を形成した工程を示
している。基板101が単結晶酸化アルミニウムであるた
め、その表面に単結晶シリコンを形成することができ
る。
して遮光膜111とするために一部を残した工程を示す。
被覆形成した工程、第2図(E)は絶縁膜110の一部に
孔112を明けて、単結晶シリコン膜111の表面を露出させ
た工程を示す。
多結晶の半導体膜123を形成した工程を示す。
工程により得られた結果を示している。斜線で示す123A
は単結晶半導体領域で、高温熱処理工程により単結晶シ
リコン膜111が種となって、これと接している孔112の部
分にある多結晶半導体膜123からラテラルエピ成長を遂
げ、孔の近い領域123Aが単結晶化する。単結晶化しなか
った領域123Bは多結晶状態のままである。
(E)において、気相エピタキシャル成長法、又は、液
相エピタキシャル成長法によっても得られる。これによ
る半導体膜としては、シリコン膜、GaAs膜など可能であ
る。
124をパタニングして形成した工程を示す。第2図
(I)はゲート絶縁膜108を形成した工程で、第2図
(J)はゲート電極125、ソース領域105、ドレイン領域
106、チャネル領域107からなるトランジスタを形成し、
透明電極103をドレイン領域106に接続して画素部を形成
する。第2図(J)では遮光膜111とソース領域105とが
接続された例を示しているか、必ずしもこの必要はな
い。
型光弁駆動用半導体装置を用いた光弁装置の1例であ
る。
29、及び半導体装置28と対向基板29との間に配置された
電気光学物質層、例えば液晶層30から構成されている。
持基板1と支持基板1の上に形成された積層構造2とか
らなっている。支持基板の裏面には偏光板31が接着され
ている。スイッチング素子4はマトリクス状に複数個配
置され、電界効果型絶縁ゲートトランジスタで構成され
ている。トランジスタのソース領域は対応する画素電極
3に接続されており、主ゲート電極は走査線32に接続さ
れ、ドレイン電極は信号線7に接続されている。半導体
装置28はさらにXドライバ33を含み列状の信号線7に接
続されている。さらに、Yドライバ34を含み行状の走査
線32に接続されている。又、対向基板29はガラス基板35
と、ガラス基板35の外側面に接着された偏光板36と、ガ
ラス基板35の内側面に形成された対向電極あるいは共通
電極37とから構成されている。
層も好ましくは主ゲート電極と共通に走査線32に接続さ
れている。これにより遮光層は副ゲート電極として動作
する。かかる接続により、スイッチング素子を構成する
トランジスタのチャネル領域に流れるリーク電流を有効
に防止することができる。あるいは、遮光層は対応する
トランジスタのソース領域又はドレイン領域に結線する
こともできる。何れにしても、遮光層に所定の電圧を印
加することによりバックチャネルに基づくリーク電流を
有効に防止することができる。さらには、遮光層に印加
される電圧を制御することによりチャネル領域の閾値電
圧を所望の値に設定することも可能である。
に単結晶半導体薄膜からなるスイッチング素子を搭載
し、かつ、入射光の影響を除去できる遮光層を形成した
平板型光弁駆動用半導体装置を簡単な方法で製造するこ
とができる。
程図、第2図(A)〜(J)は他の実施例を示す製造工
程図、第3図は本願発明の製造方法により得られた平板
型光弁駆動用半導体装置の応用例を示す。 1……支持基板、2……積層構造、3……画素電極、4
……スイッチング素子、5……ドレイン領域、6……ソ
ース領域、7……チャネル領域、8……ゲート酸化膜、
9……主ゲート電極、10……ゲート酸化膜、11……遮光
層、21……遮光性薄膜、22……絶縁膜、23……半導体薄
膜、24……下地膜
Claims (3)
- 【請求項1】透明な支持基板とその上に順に重ねられた
遮光性薄膜、絶縁膜、及び単結晶半導体薄膜を含む積層
構造とからなる複合基板を準備する第1工程と、 前記積層構造を所望の形状にパタニングして残し、他の
積層部分を除去する第2工程と、 前記パタニングされた積層構造の単結晶半導体薄膜をエ
ッチングし、所望の形状の素子領域を形成し、引き続い
て支持基板に酸化膜を形成する第3工程と、 前記素子領域の上にゲート電極を形成し、さらに単結晶
半導体薄膜にドレイン領域、ソース領域を形成しスイッ
チング素子を形成する第4工程と、 第4工程に引き続き、前記第2工程により積層部分が除
去された支持基板上に、前記スイッチング素子に接続さ
れた透明電極を形成する第5工程とからなることを特徴
とする平板型光弁駆動用半導体装置の製造方法。 - 【請求項2】前記支持基板は表面に下地膜が形成されて
いることを特徴とする請求項1記載の平板型光弁駆動用
半導体装置の製造方法。 - 【請求項3】透明な支持基板を準備し、その表面に単結
晶半導体薄膜を成長させる第1工程と、 前記単結晶半導体薄膜を所望の形状にパタニングして残
し、他の部分を除去する第2工程と、 前記支持基板全体を、前記単結晶半導体薄膜の表面を絶
縁膜で被覆し、前記絶縁膜の一部を除去して前記単結晶
薄膜の一部表面を露出する第3工程と、 第3工程に続いて、前記一部表面を露出した前記単結晶
半導体薄膜を種として前記絶縁膜上に第2の単結晶半導
体薄膜をエピタキシャル成長させる第4工程と、 前記第2の半導体単結晶薄膜に所望の素子領域を形成
し、他の部分を除去し絶縁膜を露出する第5工程と、 前記素子領域の上に順次ゲート酸化膜、主ゲート電極を
形成し、さらに第2の単結晶半導体薄膜にドレイン領
域、ソース領域を形成しスイッチング素子を形成する第
6工程と、 前記第6工程に引き続き、前記スイッチング素子に接続
された透明電極を形成する第7工程とからなることを特
徴とする平板型光弁駆動用半導体装置の製造方法。
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27743690A JPH0824193B2 (ja) | 1990-10-16 | 1990-10-16 | 平板型光弁駆動用半導体装置の製造方法 |
US07/771,756 US5233211A (en) | 1990-10-16 | 1991-10-04 | Semiconductor device for driving a light valve |
DE69131879T DE69131879T2 (de) | 1990-10-16 | 1991-10-15 | Lichtventil Vorrichtung |
EP91309495A EP0481734B1 (en) | 1990-10-16 | 1991-10-15 | Light valve device |
KR1019910018236A KR100238640B1 (ko) | 1990-10-16 | 1991-10-16 | 반도체장치 및 그 제조방법 |
US08/060,163 US5672518A (en) | 1990-10-16 | 1993-05-07 | Method of fabricating semiconductor device having stacked layered substrate |
US08/496,540 US5759878A (en) | 1990-10-16 | 1995-06-29 | Method of fabricating semiconductor device having epitaxially grown semiconductor single crystal film |
US08/510,422 USRE36836E (en) | 1990-10-16 | 1995-08-02 | Semiconductor device for driving a light valve |
US08/834,168 US6040200A (en) | 1990-10-16 | 1997-04-14 | Method of fabricating semiconductor device having stacked-layered substrate |
US09/089,465 US5926699A (en) | 1990-10-16 | 1998-06-02 | Method of fabricating semiconductor device having stacked layer substrate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27743690A JPH0824193B2 (ja) | 1990-10-16 | 1990-10-16 | 平板型光弁駆動用半導体装置の製造方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2434395A Division JP2835580B2 (ja) | 1995-02-13 | 1995-02-13 | 平板型光弁駆動用半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04152574A JPH04152574A (ja) | 1992-05-26 |
JPH0824193B2 true JPH0824193B2 (ja) | 1996-03-06 |
Family
ID=17583540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27743690A Expired - Lifetime JPH0824193B2 (ja) | 1990-10-16 | 1990-10-16 | 平板型光弁駆動用半導体装置の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (6) | US5233211A (ja) |
EP (1) | EP0481734B1 (ja) |
JP (1) | JPH0824193B2 (ja) |
KR (1) | KR100238640B1 (ja) |
DE (1) | DE69131879T2 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP0481734A2 (en) | 1992-04-22 |
US5672518A (en) | 1997-09-30 |
US5759878A (en) | 1998-06-02 |
KR100238640B1 (ko) | 2000-01-15 |
KR920008945A (ko) | 1992-05-28 |
EP0481734B1 (en) | 1999-12-29 |
US5233211A (en) | 1993-08-03 |
USRE36836E (en) | 2000-08-29 |
US5926699A (en) | 1999-07-20 |
US6040200A (en) | 2000-03-21 |
EP0481734A3 (en) | 1993-08-25 |
DE69131879T2 (de) | 2000-05-04 |
JPH04152574A (ja) | 1992-05-26 |
DE69131879D1 (de) | 2000-02-03 |
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