WO2015070463A1 - 薄膜晶体管基板的制造方法及用该方法制造的薄膜晶体管基板 - Google Patents
薄膜晶体管基板的制造方法及用该方法制造的薄膜晶体管基板 Download PDFInfo
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- WO2015070463A1 WO2015070463A1 PCT/CN2013/087357 CN2013087357W WO2015070463A1 WO 2015070463 A1 WO2015070463 A1 WO 2015070463A1 CN 2013087357 W CN2013087357 W CN 2013087357W WO 2015070463 A1 WO2015070463 A1 WO 2015070463A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
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- H—ELECTRICITY
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
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- G—PHYSICS
- G02—OPTICS
- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
- H10D86/423—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D99/00—Subject matter not provided for in other groups of this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/28—Dry etching; Plasma etching; Reactive-ion etching of insulating materials
Definitions
- the present invention relates to the field of liquid crystal display, and more particularly to a method of fabricating a thin film transistor substrate and a thin film transistor substrate manufactured by the method. Background
- Thin film transistor in electricity And drive to use.
- the thin film transistor can be formed on a glass substrate or a plastic substrate, it is generally used in the field of flat panel display devices such as liquid crystal display devices (LCDs), organic light emitting display devices (OLEDs), and electrophoretic display devices (EPDs). .
- LCDs liquid crystal display devices
- OLEDs organic light emitting display devices
- EPDs electrophoretic display devices
- Oxide semiconductors have higher electron mobility (oxide semiconductor mobility > 10cm7Vs, a-Si mobility is only 0,5 ⁇ 0 , 8em 2 /Vs), and compared to low temperature polysilicon (LTPS), oxide semiconductors
- the process cartridge has high compatibility with the a-Si process and can be applied to liquid crystal display devices (LCDs), organic light-emitting display devices (OLEDs), flexible displays, etc., and is compatible with high-swarf production lines. It is applied to large, medium and small size displays and has good application development prospects. It is popular in the current industry research. The current research on oxide semiconductors is most mature with indium gallium zinc oxide (InGaZnO, IGZO:) semiconductors.
- InGaZnO, IGZO: indium gallium zinc oxide
- the thin film transistor substrate includes a thin film transistor and a pixel electrode.
- a conventional oxide semiconductor thin film transistor substrate as shown in FIG. 1, after the oxide semiconductor layer 100 is completed, a metal source/drain electrode 200, a source/drain is required.
- the wet etching process of the electrode 200 usually uses a strong acid and a mixture thereof (such as HN0 3 /3 ⁇ 4P0 4 /C3 ⁇ 4COOH, etc.), which easily causes destruction of the oxide semiconductor layer at the back channel etching (BCE). If a thousand etching process is used, it exists. The problem of poor etching uniformity.
- the process is usually after the formation of the oxide semiconductor layer 100 and before the formation of the metal source/drain electrodes 200
- An etch stop layer (ESL) 300 for protecting the oxide semiconductor layer at the back channel from being damaged during the etching process of the metal source Z drain electrode 200, but an additional etching barrier is required.
- ESL etch stop layer
- a lithography process includes film exposure, development, etching, stripping, etc., so an additional etch barrier will greatly increase production costs, thereby reducing production yield.
- An object of the present invention is to provide a method of manufacturing a thin film transistor substrate, which is effective
- the metal-free signal line and the source/drain etching process damage the oxide semiconductor layer, improve the stability and uniformity of the thin film transistor substrate, improve the production yield, and increase the possibility of mass production of the oxide semiconductor thin film transistor substrate, and It can reduce a lithography process, greatly reduce production costs and increase production yield.
- Another object of the present invention is to provide a thin film transistor substrate which has a simple structure, high stability and uniformity, a simple manufacturing method, can reduce a lithography process, greatly reduce production cost, and improve production yield.
- the present invention provides a method of fabricating a thin film transistor substrate, comprising the steps of:
- Step 1 Providing a substrate
- Step 2 forming a gate of a predetermined structure on the substrate
- Step 3 forming a gate insulating layer on the cabinet and the substrate;
- Step 4 forming a metal signal line of a predetermined structure on the gate insulating layer
- Step 5 forming an oxide semiconductor layer of a predetermined structure on the cabinet insulating layer
- Step 6 In the * pole insulation layer. Forming a passivation layer of a predetermined structure on the metal signal line and the oxide semiconductor layer;
- Step 7 Form a source/drain of a predetermined structure on the metal signal line, the oxide semiconductor layer, and the passivation layer to form a thin film transistor substrate.
- the substrate is a glass substrate; the oxide semiconductor layer is formed of indium gallium zinc oxide, indium gallium oxide, zinc oxide, aluminum oxide or tin oxide.
- a passivation layer is formed, and an etch stop layer of a predetermined structure is formed, the etch stop layer is located on the oxide semiconductor layer, and the passivation layer is located in the etch barrier
- the layers are inverted, and the passivation layer and the etch barrier layer are made of the same material or different materials.
- a pixel electrode is further formed on the passivation layer and electrically connected to the source/drain, and the source/drain and the pixel electrode are both It is formed of a transparent conductive oxide.
- the transparent conductive oxide is indium tin oxide.
- the invention also provides a method for manufacturing a thin film transistor substrate, comprising the following steps: Step 1. providing a substrate;
- Step 2 forming a gate of a predetermined structure on the substrate
- Step 3 forming a gate insulating layer on the cabinet and the substrate;
- Step 4 forming a metal signal line of a predetermined structure on the gate insulating layer
- Step 5 forming an oxide semiconductor layer of a predetermined structure on the gate insulating layer
- Step 6 Form a predetermined junction on the gate insulating layer, the metal signal line, and the oxide semiconductor layer Passivation layer
- Step 7 Form a source Z drain of a predetermined structure on the metal signal line, the oxide semiconductor layer, and the passivation layer to form a thin film transistor substrate;
- a passivation layer is formed, and an etch stop layer of a predetermined structure is formed, the etch stop layer is located on the oxide semiconductor layer, and the passivation layer is located at the The two sides of the barrier layer, the passivation layer and the engraving; the barrier layer is made of the same material or different materials.
- the substrate is a glass substrate; the oxide semiconductor layer is formed of indium gallium zinc oxide, indium gallium oxide, zinc oxide, aluminum oxide or tin oxide.
- a pixel electrode is further formed on the passivation layer and electrically connected to the source/drain, and the source/drain and the pixel electrode are both It is formed of a transparent conductive oxide.
- the transparent conductive oxide is indium tin oxide
- the invention also provides a thin film transistor substrate, comprising:
- a passivation layer on the gate insulating layer, the metal signal line and the oxide semiconductor layer; a source/drain on the metal signal line, the oxide semiconductor layer, and the passivation layer, the source/ a drain electrically connected to the metal signal line;
- a pixel electrode located on the passivation layer and directly connected to the source/drain, and in the same layer as the source/drain, the source/drain and the pixel electrode are both made of a transparent conductive oxide form.
- the substrate is a glass substrate.
- the oxide semiconductor layer is composed of indium gallium zinc oxide, indium gallium oxide, zinc oxide, aluminum oxide
- the barrier layer is formed simultaneously with the passivation layer, and is made of the same material or different materials.
- the source/drain are formed simultaneously with the pixel electrode, and the transparent conductive oxide is indium tin oxide.
- Advantageous Effects of Invention A method of manufacturing a thin film transistor substrate and a thin film transistor substrate manufactured by the method, wherein an oxide semiconductor layer is formed after a metal signal line, and an etch barrier layer is formed before source/drain formation, And use transparent conductive oxide (TCO) instead of tradition
- TCO transparent conductive oxide
- the source/drain is made of a material to avoid the destruction of the oxide semiconductor layer by the metal signal line and the source/drain etching process, improve the stability and uniformity of the thin film transistor substrate, improve the production yield, and increase the oxide semiconductor film.
- FIG. 1 is a schematic structural view of a conventional thin film transistor substrate
- FIG. 2 is a flow chart showing a method of fabricating a thin film transistor substrate of the present invention
- 3 to 8 are schematic views showing a process of fabricating a thin film transistor substrate by the method for fabricating the thin film transistor substrate of the present invention
- 9 to 14 are schematic views showing a process of fabricating a thin film transistor substrate by the method for fabricating the thin film transistor substrate of the present invention.
- FIG. 5 is a schematic structural view of an embodiment of a thin film transistor substrate of the present invention.
- 16 is a schematic structural view of another embodiment of a thin film transistor substrate of the present invention. detailed description
- the present invention provides a method for manufacturing a thin film transistor base, comprising the following steps:
- Step 1 Provide a substrate 20.
- the substrate 20 is a transparent substrate, preferably a glass substrate or a plastic substrate.
- the substrate 20 is a glass substrate.
- a gate 22 of a predetermined structure is formed on the substrate 20 by a first photolithography process, which may be formed by: depositing a first metal layer on the substrate 20, and then passing through a mask or a half mask. The first metal layer is exposed, developed, and etched to form a *pole 22 of a predetermined structure, that is, the first photolithography process is completed.
- the first metal layer is generally an aluminum layer, one of a copper layer and a molybdenum layer. Or a combination thereof.
- Step 3 A gate insulating layer 24 is formed on the gate electrode 22 and the substrate 20.
- a shed-pole insulating layer 24 is formed on the gate electrode 22 and the substrate 20 by a second photolithography process.
- the gate insulating layer 24 generally includes one or a combination of silicon oxide and silicon nitride, and is formed in a manner similar to that of the above-described drain 22, and will not be described herein.
- Step 4 A metal signal line 26 of a predetermined structure is formed on the gate insulating layer 24.
- a predetermined metal signal line is formed on the gate insulating layer 24 by a third photolithography process.
- the specific formation manner may be: depositing a second metal layer on the gate insulating layer 24, and then exposing, developing, and etching the second metal layer through a mask or a half mask to form a metal signal of a predetermined structure. Line 26.
- the second metal layer is generally one of an aluminum layer, a copper layer, a molybdenum layer, or a combination thereof.
- Step 5 An oxide semiconductor layer 28 of a predetermined structure is formed on the cabinet insulating layer 24.
- An oxide semiconductor layer 28 of a predetermined structure is formed on the gate insulating layer 24 by a fourth photolithography process in a manner similar to that of the gate electrode 22 or the metal signal line 26 described above.
- the oxide semiconductor layer 28 is one of an indium gallium hydride (IGZO) semiconductor layer, an indium gallium oxide semiconductor layer, a zinc oxide semiconductor layer, an aluminum oxide semiconductor or a tin oxide semiconductor layer, preferably indium gallium zinc.
- IGZO indium gallium hydride
- the oxide semiconductor layer 28 is located on the side of the metal signal line 26, and preferably, the oxide semiconductor layer 28 and the metal signal line 26 are shifted in the horizontal direction.
- the oxide semiconductor layer 28 is formed after the metal signal line 26 is formed, which can avoid the destruction of the oxide semiconductor layer by the etching process of the metal signal line 26, improve the stability and uniformity of the thin film transistor substrate, and improve production. Yield, increasing the possibility of mass production of oxide semiconductor thin film transistor substrates.
- Step 6 Forming a passivation layer 32 of a predetermined structure on the gate insulating layer 24, the metal signal line 26, and the oxide semiconductor layer 28.
- a passivation layer 32 of a predetermined structure is formed on the gate insulating layer 24, the metal signal line 26, and the oxide semiconductor layer 28 by a fifth photolithography process, and the passivation layer 32 is formed in the manner of the above-described drain 22 or The metal signal line 26 is formed in a similar manner and will not be described herein.
- the corresponding passivation layer 32 on the metal signal line 26 must be etched away to form a contact hole to expose the metal signal line 26 so that The source/drain 34 formed after the passivation layer 32 is electrically connected to the metal signal line 26.
- the etching method may be a thousand etching or a wet etching.
- Step 7 A source/drain 34 of a predetermined structure is formed on the metal signal line 26, the oxide semiconductor layer 28, and the passivation layer 32 to form a thin film transistor substrate.
- a pixel electrode 36 is formed.
- the pixel electrode 36 is formed on the passivation layer 32 and electrically connected to the source/drain 34, the source/drain.
- the electrode 34 and the pixel electrode 36 are both formed of a transparent conductive oxide (TCO).
- TCO transparent conductive oxide
- the manner in which the source/drain 34 and the pixel electrode 36 are formed and the tree 22 or metal signal are worth mentioning.
- the thin film tube substrate of the present invention can be applied to the field of flat panel display devices such as liquid crystal display devices (LCDs), organic light emitting display devices (OLEDs), and electrophoretic display devices (EPDs), and can be applied to active display applications such as non-flexible or flexible displays. The field can be applied to large, medium and small size displays.
- FIG. 16 is a schematic flowchart of a method for manufacturing a thin film transistor substrate according to another embodiment of the present invention.
- steps 1 to 5 and step 7 are the same as the above embodiment.
- the difference is that in step 6, in step 6 of the embodiment, while the passivation layer 32 is formed, an etch stop layer 30 of a predetermined structure is further formed, and the etch stop layer 30 is located on the oxide semiconductor layer 28.
- the passivation layer 32 is located on both sides of the etch stop layer 30, and the passivation layer 32 and the etch stop layer 30 are made of the same material or different materials. In this embodiment, the passivation layer 32 and the etch stop layer 30 are made of the same material.
- the etch stop layer 30 serves to protect the oxide semiconductor layer 28 at the back channel from being damaged during the source/drain 34 etching process.
- the etch stop layer 30 and the passivation layer 32 are formed in the same layer, and one layer can be made less, that is, one lithography process (including film formation, exposure, development, etching, stripping, etc.) is reduced. This can significantly reduce production costs and increase production yield.
- the present invention further provides a thin film transistor substrate, comprising: a substrate 20, a gate electrode 22, a gate insulating layer 24, a metal signal line 26, an oxide semiconductor layer 28, and a passivation layer.
- a thin film transistor substrate comprising: a substrate 20, a gate electrode 22, a gate insulating layer 24, a metal signal line 26, an oxide semiconductor layer 28, and a passivation layer.
- the substrate 20 is a transparent substrate, preferably a glass substrate or a plastic substrate.
- the substrate 20 is a glass substrate solving
- the cabinet 22 is located on the substrate 20 to be folded.
- the method of forming the gate electrode 22 on the substrate 20 is as follows: first depositing a first metal layer on the substrate 20, and then exposing, developing, etching the first metal layer through the mask or the half mask. A bridge 22 of a predetermined structure is formed.
- the first metal layer is generally one of an aluminum layer, a copper layer, a molybdenum layer, or a combination thereof.
- the ohmic insulating layer 24 generally includes one of silicon oxide, silicon nitride, or a combination thereof.
- the metal signal line 26 is on the gate insulating layer 24.
- the metal signal line 26 is formed by: depositing a second metal layer on the gate insulating layer 24, and then exposing, developing, and etching the second metal layer through a mask or a half mask to form a predetermined structure.
- the second metal layer is generally one of an aluminum layer, a copper layer, a molybdenum layer, or a combination thereof.
- the metal signal line 26 is formed before the formation of the oxide semiconductor layer 28, which can avoid the destruction of the oxide semiconductor layer 28 by the etching process of the metal signal line 26, improve the stability and uniformity of the thin film transistor substrate, and improve Production yield increases the possibility of mass production of oxide semiconductor thin film transistor substrates.
- the oxide semiconductor layer 28 is located on the shed 'pole insulating layer 24 and on the side of the metal signal line 26.
- the oxide semiconductor layer 28 is an indium gallium zinc oxide semiconductor layer (IGZO).
- IGZO indium gallium zinc oxide semiconductor layer
- the oxide semiconductor layer 28 and the metal signal line 26 are shifted in the horizontal direction.
- the passivation layer 32 is located on the pole insulating layer 24.
- the metal signal line 26 and the oxide semiconductor layer 28 are provided.
- the source/drain electrodes 34 are located on the metal signal line 26, the oxide semiconductor layer 28, and the passivation layer 32. The source/drain electrodes 34 are electrically connected to the metal signal line 26.
- the pixel electrode 36 is located on the passivation layer 32 and directly connected to the source/drain 34, and is located in the same layer as the source/drain 34, and the source/drain 34 and the pixel electrode 36.
- the source/drain 34 and the pixel electrode 36 are both made of a transparent conductive oxide (TCO).
- TCO transparent conductive oxide
- the transparent conductive oxide (TCO) may be indium tin oxide.
- the thin film transistor substrate further includes an etch stop layer 30, and the etch stop layer 30 is located at the oxide layer.
- the etch stop layer 30 is used to protect the oxide semiconductor layer 28 at the back channel from being damaged during the process of the source/drain 34.
- the passivation layer 32 is located on both sides of the etch barrier layer 30.
- the passivation layer 32 is on the same layer as the etch stop layer 30 and is formed at the same time.
- the passivation layer 32 and the etch stop layer 30 may be made of the same material or may be made of different materials. In this embodiment, the passivation layer 32 and the etch stop layer 30 are made of the same material.
- the etch stop layer 30 and the passivation layer 32 are formed in the same layer, and one layer can be made less, that is, one lithography process is reduced (including film formation, exposure development, etching, stripping, etc.) Order), which can significantly reduce production costs and increase production yield.
- the oxide semiconductor layer is formed after the metal signal line, and an etch stop is formed before the source/drain formation.
- Layer and use transparent conductive oxide (TCO) to cut the traditional source/drain material to avoid damage to the oxide semiconductor layer by metal signal lines and source/drain etching processes, and improve the stability of the thin film transistor substrate.
- TCO transparent conductive oxide
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Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016524028A JP6261732B2 (ja) | 2013-11-12 | 2013-11-18 | 薄膜トランジスタ基板の製造方法及び前記方法によって製造された薄膜トランジスタ基板 |
| GB1600114.1A GB2529987B (en) | 2013-11-12 | 2013-11-18 | Thin-film transistor upon a substrate and method of manufacturing therefor |
| US14/236,684 US9082664B2 (en) | 2013-11-12 | 2013-11-18 | Method for manufacturing thin-film transistor substrate and thin-film transistor substrate manufactured with same |
| KR1020167008559A KR101831080B1 (ko) | 2013-11-12 | 2013-11-18 | 박막 트랜지스터 기판의 제조 방법 및 이를 이용하여 제조된 박막 트랜지스터 기판 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562123.XA CN103560112B (zh) | 2013-11-12 | 2013-11-12 | 薄膜晶体管基板的制造方法及用该方法制造的薄膜晶体管基板 |
| CN201310562123.X | 2013-11-12 |
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| WO2015070463A1 true WO2015070463A1 (zh) | 2015-05-21 |
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| PCT/CN2013/087357 Ceased WO2015070463A1 (zh) | 2013-11-12 | 2013-11-18 | 薄膜晶体管基板的制造方法及用该方法制造的薄膜晶体管基板 |
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| Country | Link |
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| JP (1) | JP6261732B2 (zh) |
| KR (1) | KR101831080B1 (zh) |
| CN (1) | CN103560112B (zh) |
| GB (1) | GB2529987B (zh) |
| WO (1) | WO2015070463A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113678261A (zh) * | 2019-04-09 | 2021-11-19 | 三菱电机株式会社 | 半导体装置及半导体模块 |
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| CN104241298B (zh) * | 2014-09-02 | 2017-11-10 | 深圳市华星光电技术有限公司 | Tft背板结构及其制作方法 |
| US10276593B2 (en) * | 2015-06-05 | 2019-04-30 | Sharp Kabushiki Kaisha | Active matrix substrate and method for manufacturing same, display device using active matrix substrate |
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| JPH0728077A (ja) * | 1993-07-15 | 1995-01-31 | Matsushita Electric Ind Co Ltd | 表示素子およびその製造方法 |
| CN1353329A (zh) * | 2000-11-15 | 2002-06-12 | 松下电器产业株式会社 | 薄膜晶体管阵列及其制造方法和使用它的显示板 |
| CN202373580U (zh) * | 2011-09-27 | 2012-08-08 | 北京京东方光电科技有限公司 | 薄膜晶体管阵列基板及液晶显示器 |
| CN102636927A (zh) * | 2011-12-23 | 2012-08-15 | 京东方科技集团股份有限公司 | 阵列基板及其制造方法 |
| CN102645808A (zh) * | 2012-04-20 | 2012-08-22 | 京东方科技集团股份有限公司 | 一种阵列基板的制造方法、阵列基板及显示装置 |
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| JPH0540279A (ja) * | 1991-05-24 | 1993-02-19 | Sanyo Electric Co Ltd | 液晶表示装置 |
| JP2003050405A (ja) * | 2000-11-15 | 2003-02-21 | Matsushita Electric Ind Co Ltd | 薄膜トランジスタアレイ、その製造方法およびそれを用いた表示パネル |
| KR20070109612A (ko) * | 2006-05-12 | 2007-11-15 | 엘지.필립스 엘시디 주식회사 | 폴리실리콘 tft 어레이 기판의 제조방법 |
| CN101819363B (zh) | 2009-02-27 | 2011-12-28 | 北京京东方光电科技有限公司 | Tft-lcd阵列基板及其制造方法 |
| KR101273831B1 (ko) | 2009-12-09 | 2013-06-11 | 샤프 가부시키가이샤 | 반도체 장치 및 그 제조 방법 |
| JP5139503B2 (ja) * | 2010-11-18 | 2013-02-06 | 株式会社ジャパンディスプレイイースト | 液晶表示装置およびその製造方法 |
| JP5857432B2 (ja) * | 2011-04-11 | 2016-02-10 | 大日本印刷株式会社 | 薄膜トランジスタの製造方法 |
-
2013
- 2013-11-12 CN CN201310562123.XA patent/CN103560112B/zh not_active Expired - Fee Related
- 2013-11-18 GB GB1600114.1A patent/GB2529987B/en not_active Expired - Fee Related
- 2013-11-18 JP JP2016524028A patent/JP6261732B2/ja not_active Expired - Fee Related
- 2013-11-18 KR KR1020167008559A patent/KR101831080B1/ko not_active Expired - Fee Related
- 2013-11-18 WO PCT/CN2013/087357 patent/WO2015070463A1/zh not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0728077A (ja) * | 1993-07-15 | 1995-01-31 | Matsushita Electric Ind Co Ltd | 表示素子およびその製造方法 |
| CN1353329A (zh) * | 2000-11-15 | 2002-06-12 | 松下电器产业株式会社 | 薄膜晶体管阵列及其制造方法和使用它的显示板 |
| CN202373580U (zh) * | 2011-09-27 | 2012-08-08 | 北京京东方光电科技有限公司 | 薄膜晶体管阵列基板及液晶显示器 |
| CN102636927A (zh) * | 2011-12-23 | 2012-08-15 | 京东方科技集团股份有限公司 | 阵列基板及其制造方法 |
| CN102645808A (zh) * | 2012-04-20 | 2012-08-22 | 京东方科技集团股份有限公司 | 一种阵列基板的制造方法、阵列基板及显示装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113678261A (zh) * | 2019-04-09 | 2021-11-19 | 三菱电机株式会社 | 半导体装置及半导体模块 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6261732B2 (ja) | 2018-01-17 |
| GB2529987B (en) | 2020-08-19 |
| JP2017500727A (ja) | 2017-01-05 |
| CN103560112A (zh) | 2014-02-05 |
| KR20160052624A (ko) | 2016-05-12 |
| GB2529987A (en) | 2016-03-09 |
| CN103560112B (zh) | 2015-11-18 |
| GB201600114D0 (en) | 2016-02-17 |
| KR101831080B1 (ko) | 2018-02-21 |
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