JP6110063B2 - 有機発光表示装置及び有機発光表示装置の製造方法 - Google Patents
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1216—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
-
- 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
- H01L27/1255—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 integrated with passive devices, e.g. auxiliary capacitors
-
- 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
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4908—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET for thin film semiconductor, e.g. gate of TFT
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Geometry (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Thin Film Transistor (AREA)
Description
12 バッファ層
14 半導体層
16 ゲート絶縁膜
18 透明電極
20 ゲート電極
22 層間絶縁膜
24 ソース/ゲート電極
26 画素定義膜
28 開口部
30 有機発光層
Claims (21)
- キャパシタ領域を含む基板と、
前記基板上に位置するバッファ層と、
前記キャパシタ領域の前記バッファ層の上部に位置する半導体層と、
前記半導体層の上部に形成されるゲート絶縁膜と、
前記キャパシタ領域の前記ゲート絶縁膜の上部に形成される透明電極と、
前記キャパシタ領域の前記透明電極の上部に形成されるゲート電極と、
を含み、
断面における前記透明電極の幅は、前記半導体層の幅より小さく、
前記キャパシタ領域の前記透明電極は、前記キャパシタ領域の前記ゲート電極に比べ、内側へ凹んでいる、有機発光表示装置。 - 前記透明電極は、ITOまたはIZOから選択された一つ以上を含む物質で形成される、請求項1に記載の有機発光表示装置。
- 前記半導体層は、ポリシリコンで形成される、請求項1に記載の有機発光表示装置。
- 前記透明電極と前記半導体層との幅の差異は、0.6μm以下である、請求項1に記載の有機発光表示装置。
- キャパシタ領域及びトランジスタ領域を含む基板と、
前記基板上に位置するバッファ層と、
前記キャパシタ領域の前記バッファ層の上部及び前記トランジスタ領域の前記バッファ層の上部に位置する半導体層と、
前記半導体層の上部に形成されるゲート絶縁膜と、
前記キャパシタ領域の前記ゲート絶縁膜の上部と前記トランジスタ領域の前記ゲート絶縁膜の上部に形成される透明電極と、
前記キャパシタ領域の前記透明電極の上部と前記トランジスタ領域の前記透明電極の上部に形成されるゲート電極と、
前記トランジスタ領域の前記ゲート電極と絶縁され、前記ゲート電極の上部に位置して前記トランジスタ領域の前記半導体層とコンタクトホールに接続されるソース/ドレーン電極と、
を含み、
断面における前記キャパシタ領域の前記透明電極の幅は、前記キャパシタ領域の前記半導体層の幅より小さく、
前記キャパシタ領域の前記透明電極は、前記キャパシタ領域の前記ゲート電極に比べ、内側へ凹んでいる、有機発光表示装置。 - 前記ゲート電極は、アルミニウム、クロム−アルミニウム合金またはモリブデン−アルミニウム合金のうちいずれか一つからなる単一層または多重層である、請求項5に記載の有機発光表示装置。
- 前記ソース/ドレーン電極は、アルミニウム、クロム−アルミニウム合金またはモリブデン−アルミニウム合金のうちいずれか一つからなる単一層または多重層である、請求項5に記載の有機発光表示装置。
- 前記透明電極は、ITOまたはIZOから選択された一つ以上を含む物質で形成される、請求項5に記載の有機発光表示装置。
- 前記半導体層は、ポリシリコンで形成される、請求項5に記載の有機発光表示装置。
- 前記透明電極と前記半導体層との幅の差異は、0.6μm以下である、請求項5に記載の有機発光表示装置。
- キャパシタ領域を含む基板の前記キャパシタ領域上に形成されたバッファ層の上部に半導体層を形成するステップと、
前記半導体層の上部にゲート絶縁膜、透明電極及びゲート電極を順次に形成するステップと、
前記キャパシタ領域の上部に第1エッチング防止膜を形成するステップと、
前記第1エッチング防止膜以外の領域に形成されたゲート電極をエッチングするステップと、
前記第1エッチング防止膜を除去し、前記ゲート電極をマスクとして前記透明電極が前記ゲート電極に比べ、内側へ凹むように前記透明電極をエッチングして、断面における前記透明電極の幅を、前記半導体層の幅より小さくするステップと、
を含む、有機発光表示装置の製造方法。 - 前記透明電極は、前記ゲート電極の内側へ0.6μm以下の範囲で凹んでいる、請求項11に記載の有機発光表示装置の製造方法。
- 前記ゲート電極をエッチングするステップは、
前記ゲート電極を選択的にエッチングするためにエッチング液を使用して湿式エッチングする、請求項11に記載の有機発光表示装置の製造方法。 - 前記内側に凹むようにエッチングするステップは、
前記透明電極を選択的にエッチングするためにエッチング液を使用して湿式エッチングする、請求項11に記載の有機発光表示装置の製造方法。 - キャパシタ領域及びトランジスタ領域を含む基板の前記キャパシタ領域上に形成されたバッファ層の上部に半導体層を形成するステップと、
前記半導体層の上部にゲート絶縁膜、透明電極及びゲート電極を順次に形成するステップと、
前記キャパシタ領域の上部に第1エッチング防止膜を形成するステップと、
前記第1エッチング防止膜以外の領域に形成されたゲート電極をエッチングするステップと、
前記第1エッチング防止膜を除去し、前記ゲート電極をマスクとして前記透明電極が前記ゲート電極に比べ、内側へ凹むように前記透明電極をエッチングして、断面における前記透明電極の幅を、前記半導体層の幅より小さくするステップと、
前記基板の上部に層間絶縁膜を提供するステップと、
前記トランジスタ領域の上部に第2エッチング防止膜を形成して前記第2エッチング防止膜以外の領域に形成された前記層間絶縁膜をエッチングするステップと、
を含み、
前記層間絶縁膜をエッチングするステップで、前記透明電極は前記ゲート電極によってエッチングが遮断される、有機発光表示装置の製造方法。 - 前記透明電極は、前記ゲート電極の内側へ0.6μm以下の範囲で凹む請求項15に記載の有機発光表示装置の製造方法。
- 前記ゲート電極をエッチングするステップは、
前記ゲート電極を選択的にエッチングするためにエッチング液を使用して湿式エッチングする、請求項15に記載の有機発光表示装置の製造方法。 - 前記内側へ凹むようにエッチングするステップは、
前記透明電極を選択的にエッチングするために乾式エッチングする、請求項15に記載の有機発光表示装置の製造方法。 - 前記基板上部にソース/ドレーン電極を提供するステップと、
前記トランジスタ領域の上部に第3エッチング防止膜を形成し、前記第3エッチング防止膜以外の領域に形成された前記ソース/ドレーン電極をエッチングするステップをさらに含む、請求項15に記載の有機発光表示装置の製造方法。 - 前記ソース/ドレーン電極をエッチングするステップは、
前記キャパシタ領域上に形成された前記ゲート電極をエッチングし、前記透明電極が外部に露出するようにするステップを含む、請求項19に記載の有機発光表示装置の製造方法。 - 前記ゲート電極と前記ソース/ドレーン電極は、1回のエッチングにより同時にエッチングされる、請求項20に記載の有機発光表示装置の製造方法。
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JP6349739B2 (ja) * | 2014-01-21 | 2018-07-04 | 株式会社リコー | 発光装置及びその製造方法並びに露光ヘッド |
JP2015158572A (ja) * | 2014-02-24 | 2015-09-03 | 株式会社Joled | 表示装置、電子機器 |
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