JP2008187070A - 表示装置の製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 238000009826 distribution Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 55
- 239000000758 substrate Substances 0.000 claims description 51
- 230000008569 process Effects 0.000 claims description 21
- 239000004065 semiconductor Substances 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims 3
- 239000013078 crystal Substances 0.000 abstract description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 30
- 229910052710 silicon Inorganic materials 0.000 abstract description 30
- 239000010703 silicon Substances 0.000 abstract description 30
- 238000002425 crystallisation Methods 0.000 abstract description 16
- 230000008025 crystallization Effects 0.000 abstract description 16
- 238000005259 measurement Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 57
- 239000010409 thin film Substances 0.000 description 33
- 229910021417 amorphous silicon Inorganic materials 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 11
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 10
- 239000011521 glass Substances 0.000 description 9
- 238000005224 laser annealing Methods 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
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- 238000000137 annealing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
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- 239000013081 microcrystal Substances 0.000 description 2
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- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 241000226585 Antennaria plantaginifolia Species 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000011077 uniformity evaluation Methods 0.000 description 1
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
- H01L21/02691—Scanning of a beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/02518—Deposited layers
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
- H01L21/02675—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth using laser beams
- H01L21/02678—Beam shaping, e.g. using a mask
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
- H01L21/02675—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth using laser beams
- H01L21/02683—Continuous wave laser beam
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
- H01L21/02675—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth using laser beams
- H01L21/02686—Pulsed laser beam
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- 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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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
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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
- H01L27/1214—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
- H01L27/1285—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 using control of the annealing or irradiation parameters, e.g. using different scanning direction or intensity for different transistors
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Abstract
【解決手段】エリア検出型のCCDカメラを線状レーザビームの長軸方向あるいは短軸方向にステップさせレーザビーム全体のエネルギ分布51を測定する。検出した信号(カウント数)をビーム短軸に対して平行方向に積算し、ビーム長軸方向の積算強度Eを算出する。この積算強度Eをビーム長軸の各位置におけるビーム短軸幅W(ガウス分布の1/e2、あるいは半値全幅)の平方根で除し、E/√(W)を全位置に渡って算出する。ラテラル成長結晶の得られるレーザパワー閾値はビーム短軸幅の平方根に比例しているので、短軸幅でレーザパワーを補正したE/√(W)ビームプロファイルは、SELAXにおける結晶化条件と密接な相関を有し、形成する結晶膜の良否判定をビームプロファイル測定結果から推測する。
【選択図】図9
Description
の関係が成り立つので、実効ビームプロファイルを算出する際に、E/√(W)、P×√(W)、√(P×E)のいずれのパラメータを算出しても同等の結果が得られる。
/(強度の平均値Ave)を少なくとも40%以内に設定しなければ、レーザ照射領域全体に渡り均一性能の結晶膜が得られないことがわかった。
[2]実効プロファイルを算出(ピーク強度P、ビーム短軸幅√(W)を用いて自動解析)、
[3]事前に決められた(実効強度の)しきい値に対し、測定ビームプロファイルの実効強度が下回っていないかを判定、
[4]下回っていれば、警報を鳴らし、レーザ発振器を含む光学系調査を行い、必要ならば調整を行い実効プロファイルを所望の状態に戻す、
[5]ビームを所望の状態に戻した後に、着工を再開する。
Claims (10)
- 絶縁基板上の非晶質半導体膜あるいは粒状多結晶半導体膜の複数の領域に、線状に整形されたレーザビームを当該線状の長軸方向と交叉する方向に走査しながら照射してアニールすることにより、前記非晶質半導体膜あるいは前記粒状多結晶半導体膜を前記走査方向に延びる帯状多結晶半導体膜に改質して表示装置用のアクティブ・マトリクス基板を得る表示装置の製造方法であって、
エリア検出型CCDカメラあるいはリニアアレイセンサを前記線状レーザビームの前記長軸方向あるいは短軸方向にステップさせてレーザビーム全体のエネルギ分布をカウント数として検出するプロセスと、
前記エネルギ分布の検出信号を前記レーザビームの前記短軸に対して平行な方向に積算し、
前記レーザビームの前記長軸方向の積算強度を算出し、
算出した前記積算強度をレーザビームの前記短軸幅の平方根で除して強度分布を得し、
前記レーザビームのプロファイルを制御する領域における前記強度分布の最大値と最小値を前記レーザビームの発振源もしくは装置の光学系にフィードバックして、当該レーザビームのプロファイルを制御するプロセスを有することを特徴とする表示装置の製造方法。 - 請求項1において、
前記レーザビームの前記長軸方向の積算強度E、前記レーザビームの短軸幅をWとしたとき、前記強度分布をE/√(W)で算出することを特徴とする表示装置の製造方法。 - 請求項2において、
前記レーザビームの短軸幅Wがガウス分布の1/e2であることを特徴とする表示装置の製造方法。 - 請求項2において、
前記レーザビームの短軸幅Wがガウス分布の半値幅であることを特徴とする表示装置の製造方法。 - 絶縁基板上の非晶質半導体膜あるいは粒状多結晶半導体膜の複数の領域に、線状に整形されたレーザビームを当該線状の長軸方向と交叉する方向に走査しながら照射してアニールすることにより、前記非晶質半導体膜あるいは前記粒状多結晶半導体膜を前記走査方向に延びる帯状多結晶半導体膜に改質して表示装置用のアクティブ・マトリクス基板を得る表示装置の製造方法であって、
エリア検出型CCDカメラあるいはリニアアレイセンサを前記線状レーザビームの前記長軸方向あるいは短軸方向にステップさせてレーザビーム全体のエネルギ分布をカウント数として検出するプロセスと、
前記エネルギ分布の検出信号を前記レーザビームの前記短軸に対して平行な方向に積算し、
前記レーザビームの前記長軸方向の積算強度を算出し、
算出した前記積算強度をレーザビームの前記短軸幅の平方根で除して強度分布を得し、
前記レーザビームのプロファイルを制御する領域における前記強度分布の最大値と最小値および平均値を算出し、「(最大値+最小値)/平均値」を前記レーザビームの発振源もしくは装置の光学系にフィードバックして、当該レーザビームのプロファイルを制御するプロセスを有することを特徴とする表示装置の製造方法。 - 請求項5において、
前記レーザビームの前記長軸方向の積算強度E、前記レーザビームの短軸幅をWとしたとき、前記強度分布をE/√(W)で算出することを特徴とする表示装置の製造方法。 - 請求項6において、
前記レーザビームの短軸幅Wがガウス分布の1/e2であることを特徴とする表示装置の製造方法。 - 請求項6において、
前記レーザビームの短軸幅Wがガウス分布の半値幅であることを特徴とする表示装置の製造方法。 - 絶縁基板上の非晶質半導体膜あるいは粒状多結晶半導体膜の複数の領域に、線状に整形されたレーザビームを当該線状の長軸方向と交叉する方向に走査しながら照射してアニールすることにより、前記非晶質半導体膜あるいは前記粒状多結晶半導体膜を前記走査方向に延びる帯状多結晶半導体膜に改質して表示装置用のアクティブ・マトリクス基板を得る表示装置の製造方法であって、
前記レーザビーム内の各位置におけるピーク強度分布P×積算強度分布Eの平方根√(P×E)、P×√(W)を前記レーザビームの発振源もしくは装置の光学系にフィードバックして、当該レーザビームのプロファイルを制御することを特徴とする表示装置の製造方法。 - 請求項5から9の何れかにおいて、
前記レーザビームのプロファイルを制御する領域における前記レーザビームの強度分布の「(最大値+最小値)/平均値」が、40%よりも小さいことを特徴とする表示装置の製造方法。
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US12/022,201 US7723135B2 (en) | 2007-01-31 | 2008-01-30 | Manufacturing method of display device |
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WO2012120563A1 (ja) * | 2011-03-08 | 2012-09-13 | パナソニック株式会社 | 薄膜トランジスタアレイ装置、有機el表示装置、及び、薄膜トランジスタアレイ装置の製造方法 |
WO2013031198A1 (ja) * | 2011-08-30 | 2013-03-07 | パナソニック株式会社 | 薄膜形成基板の製造方法、薄膜素子基板の製造方法、薄膜基板及び薄膜素子基板 |
JP6040438B2 (ja) * | 2011-11-09 | 2016-12-07 | 株式会社Joled | 薄膜形成基板及び薄膜形成方法 |
FR3010785B1 (fr) * | 2013-09-18 | 2015-08-21 | Snecma | Procede de controle de la densite d'energie d'un faisceau laser par analyse d'image et dispositif correspondant |
KR102440115B1 (ko) * | 2015-11-13 | 2022-09-05 | 삼성디스플레이 주식회사 | 엑시머 레이저 어닐링 방법 |
DE102019102512A1 (de) * | 2019-01-31 | 2020-08-06 | Trumpf Laser- Und Systemtechnik Gmbh | Lasersystem |
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Cited By (4)
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KR20140043950A (ko) * | 2012-09-19 | 2014-04-14 | 삼성전자주식회사 | 빔 형상기, 이를 구비하는 레이저 어닐링 시스템 및 이 시스템을 이용하여 반사형 포토 마스크를 제작하는 방법 |
KR101991405B1 (ko) * | 2012-09-19 | 2019-06-20 | 삼성전자주식회사 | 빔 형상기, 이를 구비하는 레이저 어닐링 시스템 및 이 시스템을 이용하여 반사형 포토 마스크를 제작하는 방법 |
KR20140076319A (ko) * | 2012-12-12 | 2014-06-20 | 엘지디스플레이 주식회사 | 평판표시장치 및 이의 제조 방법 |
KR101960847B1 (ko) * | 2012-12-12 | 2019-03-20 | 엘지디스플레이 주식회사 | 평판표시장치 및 이의 제조 방법 |
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US20080188012A1 (en) | 2008-08-07 |
JP5188718B2 (ja) | 2013-04-24 |
US7723135B2 (en) | 2010-05-25 |
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