WO2020155801A1 - 阵列基板及其制作方法和显示面板 - Google Patents
阵列基板及其制作方法和显示面板 Download PDFInfo
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- WO2020155801A1 WO2020155801A1 PCT/CN2019/119932 CN2019119932W WO2020155801A1 WO 2020155801 A1 WO2020155801 A1 WO 2020155801A1 CN 2019119932 W CN2019119932 W CN 2019119932W WO 2020155801 A1 WO2020155801 A1 WO 2020155801A1
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- 239000000758 substrate Substances 0.000 title claims abstract description 168
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000004065 semiconductor Substances 0.000 claims abstract description 253
- 239000010409 thin film Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 55
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 150000003346 selenoethers Chemical class 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 10
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 10
- 229910052976 metal sulfide Inorganic materials 0.000 claims abstract description 10
- 150000004767 nitrides Chemical class 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 713
- 239000011229 interlayer Substances 0.000 claims description 76
- 229910052739 hydrogen Inorganic materials 0.000 claims description 73
- 239000001257 hydrogen Substances 0.000 claims description 73
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 63
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 59
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 41
- 229910052733 gallium Inorganic materials 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 39
- 230000004888 barrier function Effects 0.000 claims description 38
- 239000011787 zinc oxide Substances 0.000 claims description 32
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 17
- 229910052738 indium Inorganic materials 0.000 claims description 17
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical group [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- UBSJOWMHLJZVDJ-UHFFFAOYSA-N aluminum neodymium Chemical compound [Al].[Nd] UBSJOWMHLJZVDJ-UHFFFAOYSA-N 0.000 claims description 13
- RHKSESDHCKYTHI-UHFFFAOYSA-N 12006-40-5 Chemical compound [Zn].[As]=[Zn].[As]=[Zn] RHKSESDHCKYTHI-UHFFFAOYSA-N 0.000 claims description 10
- AKJVMGQSGCSQBU-UHFFFAOYSA-N zinc azanidylidenezinc Chemical compound [Zn++].[N-]=[Zn].[N-]=[Zn] AKJVMGQSGCSQBU-UHFFFAOYSA-N 0.000 claims description 10
- ZZEMEJKDTZOXOI-UHFFFAOYSA-N digallium;selenium(2-) Chemical compound [Ga+3].[Ga+3].[Se-2].[Se-2].[Se-2] ZZEMEJKDTZOXOI-UHFFFAOYSA-N 0.000 claims description 9
- 239000006011 Zinc phosphide Substances 0.000 claims description 8
- HOKBIQDJCNTWST-UHFFFAOYSA-N phosphanylidenezinc;zinc Chemical compound [Zn].[Zn]=P.[Zn]=P HOKBIQDJCNTWST-UHFFFAOYSA-N 0.000 claims description 8
- 229940048462 zinc phosphide Drugs 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- UNRNJMFGIMDYKL-UHFFFAOYSA-N aluminum copper oxygen(2-) Chemical compound [O-2].[Al+3].[Cu+2] UNRNJMFGIMDYKL-UHFFFAOYSA-N 0.000 claims description 7
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 claims description 7
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 6
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical group [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 6
- 229940112669 cuprous oxide Drugs 0.000 claims description 6
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 6
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 6
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 claims description 6
- GKCNVZWZCYIBPR-UHFFFAOYSA-N sulfanylideneindium Chemical compound [In]=S GKCNVZWZCYIBPR-UHFFFAOYSA-N 0.000 claims description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 5
- 229910005540 GaP Inorganic materials 0.000 claims description 4
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- FICKXURGDGSXMP-UHFFFAOYSA-N [Zn+2].[O-2].[Zn+2].[Sn+2]=O.[In+3] Chemical compound [Zn+2].[O-2].[Zn+2].[Sn+2]=O.[In+3] FICKXURGDGSXMP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- 238000001755 magnetron sputter deposition Methods 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910018565 CuAl Inorganic materials 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
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- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 238000001312 dry etching Methods 0.000 description 2
- BVSHTEBQPBBCFT-UHFFFAOYSA-N gallium(iii) sulfide Chemical compound [S-2].[S-2].[S-2].[Ga+3].[Ga+3] BVSHTEBQPBBCFT-UHFFFAOYSA-N 0.000 description 2
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- 239000010703 silicon Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
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- KKEYTLVFLSCKDE-UHFFFAOYSA-N [Sn+2]=O.[O-2].[Zn+2].[O-2] Chemical compound [Sn+2]=O.[O-2].[Zn+2].[O-2] KKEYTLVFLSCKDE-UHFFFAOYSA-N 0.000 description 1
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- -1 indium tin gallium oxide Compounds Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
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- 229920000123 polythiophene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H10K59/13—Active-matrix OLED [AMOLED] displays comprising photosensors that control luminance
-
- 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
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/1443—Devices controlled by radiation with at least one potential jump or surface barrier
-
- 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
- H01L29/66—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
-
- 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
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
Definitions
- the first conductivity type semiconductor layer is n-type conductivity
- the material for forming the first conductivity type semiconductor layer is selected from indium gallium zinc oxide, indium tin zinc oxide, indium tin gallium oxide Compounds, indium gallium zinc tin oxide, indium zinc oxide, gallium zinc oxide, zinc oxynitride, aluminum doped indium zinc oxide, aluminum neodymium doped indium zinc oxide, aluminum doped gallium zinc oxide At least one of gallium-zinc oxide doped with aluminum neodymium;
- the semiconductor layer of the first conductivity type is p-type conductivity
- the material for forming the semiconductor layer of the first conductivity type is selected from the group consisting of cuprous oxide, copper aluminum oxide, gallium sulfide, indium sulfide, and selenide. At least one of gallium, zinc nitride, zinc phosphide, gallium phosphide, and zinc arsenide;
- the second conductivity type semiconductor layer is n-type conductivity, and the material forming the second conductivity type semiconductor layer is selected from indium gallium zinc oxide, indium tin zinc oxide, indium tin gallium oxide, indium gallium zinc tin oxide Indium zinc oxide, gallium zinc oxide, zinc oxynitride, aluminum doped indium zinc oxide, aluminum neodymium doped indium zinc oxide, aluminum doped gallium zinc oxide, aluminum neodymium doped gallium At least one of zinc oxide and amorphous silicon.
- the material of the intrinsic semiconductor layer includes amorphous silicon.
- the interlayer insulating layer includes a plurality of laminated interlayer insulating layers, wherein the manufacturing processes of two adjacent sublayer insulating layers are different.
- the gate insulating layer is disposed on the surface of the active layer away from the substrate; the gate is disposed on the surface of the gate insulating layer away from the substrate;
- the interlayer insulating layer is disposed on a side of the substrate close to the active layer, and covers the exposed active layer, the gate insulating layer, and the gate;
- the source electrode and the drain electrode It is arranged on the surface of the interlayer insulating layer away from the substrate, and the source electrode and the drain electrode are respectively electrically connected to the active layer through a first via hole.
- the array substrate further includes:
- a first insulating layer the first insulating layer being disposed on the surface of the interlayer insulating layer away from the substrate and covering the source electrode and the drain electrode;
- a hydrogen barrier layer, the hydrogen barrier layer is disposed on the surface of the first insulating layer away from the substrate, and the hydrogen barrier layer is electrically connected to the gate through a second via hole;
- a flat layer is disposed on the surface of the second insulating layer away from the substrate;
- a pixel defining layer, the pixel defining layer is disposed on a surface of the third electrode layer away from the substrate,
- the first conductive type semiconductor layer is disposed on the surface of the first electrode layer away from the substrate;
- the intrinsic semiconductor layer is disposed on the surface of the first conductivity type semiconductor layer away from the substrate;
- the second conductive type semiconductor layer is disposed on the surface of the intrinsic semiconductor layer away from the substrate.
- a second insulating layer, the second insulating layer is disposed on the surface of the interlayer insulating layer away from the substrate, and covers the exposed source, drain, and first conductivity type semiconductor layer , The intrinsic semiconductor layer, the second conductivity type semiconductor layer and the second electrode layer;
- a flat layer is disposed on the surface of the second insulating layer away from the substrate;
- a third electrode layer, the third electrode layer is disposed on the surface of the flat layer away from the substrate, and is electrically connected to the second electrode layer through a fourth via;
- the first conductivity type semiconductor layer is disposed on the surface of the drain electrode or the source electrode away from the substrate;
- the intrinsic semiconductor layer is disposed on the surface of the first conductivity type semiconductor layer away from the substrate;
- the hydrogen barrier layer and the first electrode layer are provided in the same layer.
- the first conductivity type semiconductor layer is produced in an atmosphere that does not contain hydrogen.
- an embodiment of the present disclosure provides a display panel, which includes the array substrate according to any one of the foregoing embodiments.
- an embodiment of the present disclosure provides a method of manufacturing an array substrate, including:
- the step of forming a thin film transistor on a substrate includes: sequentially forming an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source electrode and a drain electrode on the substrate,
- the step of forming the interlayer insulating layer includes:
- a plurality of laminated interlayer insulating layers are sequentially formed, wherein the power and speed of forming two adjacent sublayer insulating layers are different.
- the active layer and the interlayer insulating layer are formed on the surface of the buffer layer away from the light shielding layer.
- FIG. 3 is a schematic diagram of the structure of a thin film transistor in an embodiment of the present disclosure.
- FIG. 4 is a schematic flow chart of a method for manufacturing a thin film transistor in an embodiment of the present disclosure
- FIG. 5 is a schematic diagram of a structure flow diagram of fabricating a thin film transistor in an embodiment of the present disclosure
- FIG. 6 is a schematic diagram of the structure flow of manufacturing a thin film transistor in an embodiment of the present disclosure
- FIG. 7 is a schematic diagram of a structure flow diagram of fabricating a thin film transistor in an embodiment of the present disclosure.
- FIG. 9 is a schematic diagram of a structure flow diagram of fabricating a thin film transistor in an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of the structure flow of manufacturing a thin film transistor in an embodiment of the present disclosure.
- FIG. 11 is a schematic diagram of the structure flow of manufacturing a thin film transistor in an embodiment of the present disclosure.
- the optical compensation method is through the use of sub-pixels.
- a photosensitive sensor PIN diode
- the thin film transistor compensates the brightness of the sub-pixel area according to the result of detecting the brightness of the light.
- the PIN diode includes n (or p) type doped amorphous silicon, amorphous silicon, and p (or n) type doped amorphous silicon stacked on the surface of the source or drain.
- the active layer is usually conductorized in the source and drain.
- a hydrogen barrier layer is provided on the side far away from the substrate, wherein the material of the hydrogen barrier layer is usually the same as that of the source electrode and the drain electrode.
- the designer unexpectedly discovered that the hydrogen barrier layer cannot completely block the diffusion of hydrogen into the active layer, that is, to a certain extent, the active layer is still conductive by hydrogen, causing the active layer to be large.
- the current state seriously affects the TFT characteristics.
- an embodiment of the present disclosure provides a thin film transistor.
- the thin film transistor includes an active layer 20, a gate insulating layer 30, a gate 40, an interlayer insulating layer 50, a source 61, and
- the drain 62 is provided with a PIN diode 70 on the side of the drain 62 or the source 61 away from the active layer 20 (in the drawings, the side of the drain 62 is taken as an example).
- the PIN diode 70 includes a first conductivity type semiconductor layer 71, an intrinsic semiconductor layer 72 and a second conductivity type semiconductor layer 73 stacked in sequence, wherein, the first conductive type semiconductor layer 71 is formed of metal oxide, metal sulfide, metal selenide, metal nitride, metal phosphide, or metal arsenide.
- the active layer 20 is provided on the surface of the substrate 10; the gate insulating layer 30 is provided on the surface of the active layer 20 away from the substrate 10.
- the gate 40 is disposed on the surface of the gate insulating layer 30 away from the substrate 10; the interlayer insulating layer 50 is disposed on the surface of the substrate 10, and the interlayer insulating layer 50 covers the exposed active layer 20 and the gate insulating layer 30 And the gate 40; the source 61 and the drain 62 are arranged on the surface of the interlayer insulating layer 50 away from the substrate 10, and are electrically connected to the active layer 20 through the first via 51; the PIN diode 70 is arranged on the drain In order to achieve the optical compensation effect of the PIN diode, a second electrode layer 74 is also provided on the surface of the PIN diode 70 away from the substrate 10. The PIN diode 70 is connected to the drain 62 and the second electrode layer 74 respectively.
- electrodes need to be provided on both sides of the PIN diode to meet its working requirements.
- electrodes may be provided on the surfaces of the first conductivity type semiconductor layer and the second conductivity type semiconductor layer; in other embodiments of the present disclosure, as shown in FIG. 1, the A conductive type semiconductor layer is provided on the surface of the source or drain, the source or drain is used as one electrode of the PIN diode, and then another electrode is provided on the surface of the second conductive type semiconductor layer (ie, in Figure 1 The second electrode layer 74).
- the specific materials for forming the substrate, the active layer, the gate insulating layer, the gate electrode, the interlayer insulating layer, the source electrode, the drain electrode, and the second electrode layer are not limited. Flexible selection according to actual needs.
- the specific material for forming the substrate includes but not limited to polymer and glass; the material for forming the active layer includes but not limited to indium gallium zinc oxide, amorphous silicon, polysilicon, hexathiophene or polythiophene, etc.
- the materials for forming the gate insulating layer and the interlayer insulating layer respectively include but are not limited to silicon nitride, silicon oxide, silicon oxynitride or organic insulating materials; the material for forming the gate is selected from silver, copper, aluminum, molybdenum, and metal alloys And at least one of indium tin oxide; the material for forming the source and drain electrodes is selected from at least one of silver, copper, aluminum, molybdenum, metal alloys and indium tin oxide; the material for forming the second electrode layer is selected from silver , At least one of copper, aluminum, molybdenum, metal alloys, and indium tin oxide.
- the interlayer insulating layer is usually only used as an insulating layer, and the power and speed set during the entire process of depositing the interlayer insulating layer remain unchanged.
- the designer found that the interlayer insulating layer is to a certain extent Hydrogen can also be prevented from diffusing into the active layer, and the interlayer insulating layer obtained by high-power, low-speed deposition has a better effect on blocking hydrogen, but the production process takes longer and the cost is higher.
- the interlayer insulating layer includes multiple sub-layer insulating layers stacked, Among them, the power and speed formed by two adjacent sub-layer insulating layers are different.
- high-quality and high-performance interlayer insulating film can be produced through high power and low speed, and relatively poor quality layers can be produced through low power and high speed.
- Interlayer insulating film (low-quality film, it should be noted that "low-quality film” here does not mean that the quality of the interlayer insulating film is poor, but that the effect of blocking hydrogen diffusion is relatively poor compared with high-quality film), so,
- the high and low power and the high and low speed of the formation of each sub-layer insulating layer can be adjusted to meet the requirements for film quality and formation rate at the same time.
- the resulting interlayer insulating layer can not only better block the diffusion of hydrogen, but also The production time of the interlayer insulating layer is shortened, and the production efficiency of the thin film transistor is improved.
- the power for preparing the interlayer insulating layer is 100W-5kw, and the rate is Among them, high power is 1.2kw ⁇ 5kw (such as 1.2kw, 1.4kw, 1.6kw, 1.8kw, 2kw, 2.3kw, 2.5kw, 2.8kw, 3kw, 3.3kw, 3.5kw, 4kw, 4.2kw, 4.5kw, 4.8kw, 5kw), low power is 100W ⁇ 1.2kw (such as 100W, 300W, 500W, 800W, 1.0kw, 1.05kw, 1.1kw, 1.15kw), high speed rate (such as ), the low rate is (such as ).
- high power is 1.2kw ⁇ 5kw (such as 1.2kw, 1.4kw, 1.6kw, 1.8kw, 2kw, 2.3kw, 2.5kw, 2.8kw, 3kw, 3.3kw, 3.5kw, 4kw, 4.2k
- high-quality films and low-quality films are alternately stacked to form an interlayer insulating layer, that is, a high-quality film, a low-quality film, a high-quality film, and a high-quality film , And so on, cascading settings.
- the thickness of the interlayer insulating layer is not limited, and those skilled in the art can flexibly choose according to actual needs. In some embodiments of the present disclosure, the thickness of the interlayer insulating layer is about such as or Therefore, the interlayer insulating layer has good performance and can also block the diffusion of hydrogen.
- the principle of the light compensation function of the PIN diode is: light irradiates the PIN diode to excite the carrier electrons and holes of the first conductivity type semiconductor layer and the second conductivity type semiconductor layer.
- the electrons and holes are The intrinsic semiconductor layer recombines to generate photo-generated carriers, and as the light intensity increases, the current generated by the carriers increases, so according to the magnitude of the current, the intensity of light can be accurately reflected. According to the magnitude of the current, Change the applied voltage to control the intensity of the light and realize the compensation function.
- the first conductivity type semiconductor layer is n-type conductivity
- the material for forming the first conductivity type semiconductor layer is selected from indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), indium tin gallium oxide (ITGO), indium gallium zinc tin oxide (IGZTO), indium zinc oxide (IZO), gallium zinc oxide (GZO), zinc oxynitride (ZnON), aluminum doped Indium zinc oxide (Al-IZO), aluminum neodymium doped indium zinc oxide (AlNd-IZO), aluminum doped gallium zinc oxide (Al-GZO), aluminum neodymium doped gallium zinc oxide (AlNd -GZO);
- the second conductivity type semiconductor layer is p-type conductivity
- the material forming the second conductivity type semiconductor layer is selected from cuprous oxide (Cu 2 O), aluminum oxide copper (CuAl 2 O
- the materials forming the first conductivity type semiconductor layer have a good function of blocking hydrogen diffusion, thereby improving the display effect of the display panel using the thin film transistor; And when the second conductivity type semiconductor layer uses materials other than the aforementioned non-crystalline silicon, since it and the production atmosphere do not contain hydrogen, the risk of the active layer being conductive can be further reduced.
- the first conductivity type semiconductor layer is p-type conductivity
- the material for forming the first conductivity type semiconductor layer is selected from cuprous oxide (Cu 2 O), copper aluminum oxide (CuAl 2 O), gallium sulfide ( At least one of GaS, indium sulfide (InS), gallium selenide (GaSe), zinc nitride (ZnN), zinc phosphide (ZnP), gallium phosphide (GaP), and zinc arsenide (ZnAs);
- the second conductivity type semiconductor layer is n-type conductivity, and the material forming the second conductivity type semiconductor layer is selected from indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), indium tin gallium oxide ( ITGO), indium gallium zinc tin oxide (IGZTO), indium zinc oxide (IZO), gallium zinc oxide (GZO), zinc oxynitride (ZnON), aluminum-doped in
- the materials forming the first conductivity type semiconductor layer have a good function of blocking hydrogen diffusion, thereby improving the display effect of the display panel using the thin film transistor; And when the second conductivity type semiconductor layer uses materials other than the aforementioned non-crystalline silicon, since it and the production atmosphere do not contain hydrogen, the risk of the active layer being conductive can be further reduced.
- the material forming the intrinsic semiconductor layer includes amorphous silicon. Therefore, the optical compensation effect of the PIN diode is better.
- the thickness of the first conductivity type semiconductor layer is such as or In this way, the performance of the first conductivity type semiconductor layer is better, the resistance will not be too large, and will not affect the size of the photocurrent. If the thickness is too thin, the first conductivity type semiconductor layer cannot form a continuous film. If the thickness is too thick, the resistance Will rise, easily causing the photocurrent to drop; the thickness of the intrinsic semiconductor layer is such as In this way, an intrinsic semiconductor layer with a uniform thickness can be formed with better performance; the thickness of the second conductivity type semiconductor layer is such as or In this way, the second conductivity type semiconductor layer with uniform thickness can be formed, and the performance is better.
- the thin film transistor includes: a substrate 10; a light-shielding layer 80 provided on the upper surface of the substrate 10; and a buffer layer 90 provided on the substrate 10, and cover the light shielding layer 80; the active layer 20, the active layer 20 is arranged on the surface of the buffer layer 90 away from the light shielding layer 80; the gate insulating layer 30, the gate insulating layer 30 is arranged on the active layer 20 away On the surface of the substrate 10; the gate 40, the gate 40 is arranged on the surface of the gate insulating layer 30 away from the substrate 10; the interlayer insulating layer 50, the interlayer insulating layer 50 is arranged on the surface of the buffer layer 90 away from the substrate 10 And cover the exposed active layer 20, the gate insulating layer 30 and the gate 40; the source 61 and the drain 62, and the source 61 and the drain 62 are arranged on the surface of the interlayer insulating layer 50 away from the substrate 10,
- the source 61 and the drain 62 are
- the hydrogen barrier layer, the first conductivity type semiconductor layer and the interlayer insulating layer can all be used to block the diffusion of hydrogen, better prevent the active layer from being conductive, and then solve the high current of the active layer. The problem.
- the arrangement of the hydrogen barrier layer 110 and the first electrode layer 112 in the same layer is not limited to the two being at the same vertical height or having the same thickness.
- the two are formed by the same material and the same patterning process, they It is regarded as the same layer setting.
- the thin film transistor includes: a substrate 10; a light-shielding layer 80, which is provided on the upper surface of the substrate 10; a buffer layer 90, which is provided on the substrate 10; On the upper surface of the bottom 10, and cover the light shielding layer 80; the active layer 20, the active layer 20 is arranged on the surface of the buffer layer 90 away from the light shielding layer 80; the gate insulating layer 30, the gate insulating layer 30 is arranged on the active layer 20 On the surface away from the substrate 10; the gate 40, the gate 40 is arranged on the surface of the gate insulating layer 30 away from the substrate 10; the interlayer insulating layer 50, the interlayer insulating layer 50 is arranged on the buffer layer 90 away from the substrate 10 On the surface, and cover the exposed active layer 20, the gate insulating layer 30 and the gate 40; the source 61 and the drain 62, and the source 61 and the drain 62 are arranged on the surface of the interlayer insulating layer 50
- the materials for forming the second electrode layer, the third electrode layer, the first insulating layer, the second insulating layer, the flat layer, the hydrogen barrier layer, and the pixel defining layer are no special requirements for the materials for forming the second electrode layer, the third electrode layer, the first insulating layer, the second insulating layer, the flat layer, the hydrogen barrier layer, and the pixel defining layer.
- Those skilled in the art can Flexible choice according to actual needs.
- the step of forming the light shielding layer 80 and the buffer layer 90 may be further included.
- the light shielding layer 80, the buffer layer 90, and the active layer are formed as described above. 20.
- the methods of the gate insulating layer 30, the gate 40, the interlayer insulating layer 50, the source 61 and the drain 62 are not limited. Those skilled in the art can flexibly use conventional technical means according to actual needs.
- the embodiments describe in detail the formation steps and methods of the above-mentioned various structures:
- a light-shielding layer film is deposited on one surface of the substrate 10, and then the light-shielding layer film is patterned through a patterning process (including the steps of forming photoresist, etching, and peeling) to obtain a light-shielding layer 80; on the surface of the substrate 10 Deposit the buffer layer 90 and cover the light shielding layer 80; deposit an active layer film on the surface of the buffer layer 90 away from the substrate, and then pattern the active layer film through a patterning process to obtain the active layer 20; 20.
- a gate insulating layer 30 is deposited on the surface away from the substrate.
- the gate insulating layer can be a whole layer or a patterned structure obtained through a patterning process.
- the gate insulating layer 30 is deposited on the surface away from the substrate to form a gate.
- the gate film covers the exposed active layer and the substrate, and then the gate film is patterned by a patterning process to obtain the gate electrode 40; an interlayer insulating layer 50 and an interlayer insulating layer 50 are deposited on the surface of the substrate Cover the exposed active layer 20, the gate insulating layer 30 and the gate 40; form a first via 51 in the interlayer insulating layer by an etching method, and the first via 51 exposes part of the active layer 20;
- the source and drain films are deposited on the surface of the insulating layer 50 away from the substrate, and then the source and drain films are patterned by a patterning process to obtain a source 61 and a drain 62.
- the source 61 and the drain 62 communicate with each other through the first via 51
- the source layer 20 is electrically connected.
- the provision of the interlayer insulating layer can also prevent hydrogen from diffusing into the active layer to a certain extent.
- the interlayer insulating layer is formed The steps include: sequentially forming a plurality of laminated interlayer insulating layers, wherein the power and speed of forming two adjacent sublayer insulating layers are different.
- An intermediate semiconductor layer 76 is formed on the surface of the first semiconductor layer 75 away from the substrate, and the intermediate semiconductor layer 76 covers the first semiconductor layer 75.
- FIG. 9 for a structural schematic diagram (in FIG. 9, a hydrogen barrier layer is not provided as an example).
- the second semiconductor layer due to the arrangement of the first semiconductor layer, when preparing the second semiconductor layer, regardless of whether the material used contains hydrogen, whether the deposition atmosphere contains hydrogen, or whether it is deposited for a long time, hydrogen is deposited in the interlayer insulating layer and the second semiconductor layer. When a semiconductor layer is blocked by layers, it will not diffuse into the active layer.
- the thin film transistor in order to further improve the structure of the thin film transistor, it further includes: forming a second electrode layer 74 on the surface of the second conductive type semiconductor layer 73 away from the substrate 10 through a patterning process;
- the interlayer insulating layer 50 is deposited on the surface away from the substrate 10 to form a second insulating layer 120, and the second insulating layer 120 covers the exposed source 61, drain 62, first conductive type semiconductor layer 71, and intrinsic semiconductor layer 72 , The second conductive type semiconductor layer 73 and the second electrode layer 74; depositing a flat layer 130 on the surface of the second insulating layer 120 away from the substrate; forming a fourth via 131 on the surface of the flat layer 130 by etching, The fourth via 131 penetrates the second insulating layer 120 and exposes a part of the surface of the second electrode layer 74; the third electrode layer 140 is formed on the surface of the flat layer 130 away from the substrate through the steps of deposition, etching and stripping.
- an embodiment of the present disclosure provides a display panel.
- the display panel includes the aforementioned thin film transistor. Therefore, the characteristics of the thin film transistor in the display panel are good, and the display effect of the display panel is better. Those skilled in the art can understand that the display panel has all the features and advantages of the aforementioned thin film transistors.
- the above display panels also include structures or components necessary for conventional display panels, such as hole transport layers, light emitting layers, electron transport layers, and packaging films. Or parts.
- an embodiment of the present disclosure provides a display device.
- the display device includes the aforementioned display panel or thin film transistor. Therefore, the display device has better display effect and stable performance.
- the display device has all the features and advantages of the thin film transistor or the display panel described above, and will not be repeated here.
- the aforementioned display devices also include structures or components necessary for conventional display devices.
- the panel also includes structures or components such as a glass cover, a housing, a CPU processor, a fingerprint module, an audio module, and a touch module.
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Abstract
Description
Claims (21)
- 一种阵列基板,包括:衬底;薄膜晶体管,在所述衬底上;和PIN二极管,在所述薄膜晶体管远离所述衬底的一侧,从所述薄膜晶体管朝向远离所述衬底的方向上,所述PIN二极管包括依次层叠设置的第一导电类型半导体层、本征半导体层和第二导电类型半导体层;其中,所述第一导电类型半导体层的材料包括下述材料中的一种或几种:金属氧化物、金属硫化物、金属硒化物、金属氮化物、金属磷化物或金属砷化物。
- 根据权利要求1所述的阵列基板,其中,所述薄膜晶体管包括有源层、栅绝缘层、栅极、层间绝缘层、源极和漏极,其中,所述PIN二极管设置在所述漏极或所述源极的远离所述有源层的一侧。
- 根据权利要求1所述的阵列基板,其中,所述第一导电类型半导体层为n型导电,且形成所述第一导电类型半导体层材料选自铟镓锌氧化物、铟锡锌氧化物、铟锡镓氧化物、铟镓锌锡氧化物、铟锌氧化物、镓锌氧化物、氮氧化锌、铝掺杂的铟锌氧化物、铝钕掺杂的铟锌氧化物、铝掺杂的镓锌氧化物、铝钕掺杂的镓锌氧化物中的至少一种;所述第二导电类型半导体层为p型导电,且形成所述第二导电类型半导体层的材料选自氧化亚铜、氧化铝铜、硫化镓、硫化铟、硒化镓、氮化锌、磷化锌、磷化镓、砷化锌和非晶硅中的至少一种。
- 根据权利要求1所述的阵列基板,其中,所述第一导电类型半导体层为p型导电,且形成所述第一导电类型半导体层材料选自氧化亚铜、氧化铝铜、硫化镓、硫化铟、硒化镓、氮化锌、磷化锌、磷化镓、砷化锌中的至少一种;所述第二导电类型半导体层为n型导电,且形成所述第二导电类型半导体层的材料选自铟镓锌氧化物、铟锡锌氧化物、铟锡镓氧化物、铟镓锌锡氧化物、铟锌氧化物、镓锌氧化物、氮氧化锌、铝掺杂的铟锌氧化物、铝钕掺杂的铟锌氧化物、铝掺杂的镓锌氧化物、铝钕掺杂的镓锌氧化物和非晶硅中的至少一种。
- 根据权利要求1所述的阵列基板,其中,所述本征半导体层的材料包括非晶硅。
- 根据权利要求2所述的阵列基板,其中,所述层间绝缘层包括多个层叠设置的子层 间绝缘层,其中相邻的两个子层间绝缘层的制造工艺不同。
- 根据权利要求2所述的阵列基板,其中,所述阵列基板还包括两个电极层,两个电极层分别设置在第一导电类型半导体层和第二导电类型半导体层的远离本征半导体层的一侧,并分别与第一导电类型半导体层和第二导电类型半导体层电连接。
- 根据权利要求2所述的阵列基板,其中,所述阵列基板还包括一个电极层,所述电极层设置在第二导电类型半导体层的远离本征半导体层的一侧,并与第二导电类型半导体层电连接,并且所述第一导电类型半导体层与所述漏极或所述源极直接接触而电连接。
- 根据权利要求2所述的阵列基板,其中,所述栅绝缘层设置在所述有源层远离所述衬底的表面上;所述栅极设置在所述栅绝缘层远离所述衬底的表面上;所述层间绝缘层设置在所述衬底的靠近有源层的一侧,并覆盖暴露的所述有源层、所述栅绝缘层和所述栅极;所述源极和所述漏极设置在所述层间绝缘层远离所述衬底的表面上,所述源极和所述漏极分别通过第一过孔与所述有源层电连接。
- 根据权利要求10所述的阵列基板,其中,所述阵列基板还包括:遮光层,所述遮光层设置在所述衬底上;缓冲层,所述缓冲层设置在所述衬底上,且覆盖所述遮光层,其中,所述有源层和所述层间绝缘层设置在缓冲层远离所述遮光层的表面上。
- 根据权利要求10~11中任一项所述的阵列基板,还包括:第一绝缘层,所述第一绝缘层设置在所述层间绝缘层远离所述衬底的表面上,并覆盖所述源极和所述漏极;氢阻挡层,所述氢阻挡层设置在所述第一绝缘层远离所述衬底的表面上,所述氢阻挡层通过第二过孔与所述栅极电连接;第一电极层,所述第一电极层通过第三过孔与所述漏极或所述源极电连接;第二电极层,所述第二电极层设置在所述第二导电类型半导体层远离所述衬底的表面上;第二绝缘层,所述第二绝缘层设置在所述第一绝缘层远离所述衬底的表面上,并覆盖暴露的所述氢阻挡层、所述第一电极层、所述第一导电类型半导体层、所述本征半导体层、所述第二导电类型半导体层和所述第二电极层;平坦层,所述平坦层设置在所述第二绝缘层远离所述衬底的表面上;第三电极层,所述第三电极层设置在所述平坦层远离所述衬底的表面上,并通过第四过孔与所述第二电极层电连接;像素界定层,所述像素界定层设置在所述第三电极层远离所述衬底的表面上,其中,所述第一导电类型半导体层设置在所述第一电极层远离所述衬底的表面上;所述本征半导体层设置在所述第一导电类型半导体层远离所述衬底的表面上;所述第二导电类型半导体层设置在所述本征半导体层远离所述衬底的表面上。
- 根据权利要求10~11中任一项所述的阵列基板,还包括:第二电极层,所述第二电极层设置在所述第二导电类型半导体层远离所述衬底的表面上;第二绝缘层,所述第二绝缘层设置在所述层间绝缘层远离所述衬底的表面上,并覆盖暴露的所述源极、所述漏极、所述第一导电类型半导体层、所述本征半导体层、所述第二导电类型半导体层和所述第二电极层;平坦层,所述平坦层设置在所述第二绝缘层远离所述衬底的表面上;第三电极层,所述第三电极层设置在所述平坦层远离所述衬底的表面上,并通过第四过孔与所述第二电极层电连接;像素界定层,所述像素界定层设置在所述第三电极层远离所述衬底的表面上,其中,所述第一导电类型半导体层设置在所述漏极或所述源极远离所述衬底的表面上;所述本征半导体层设置在所述第一导电类型半导体层远离所述衬底的表面上;所述第二导电类型半导体层设置在所述本征半导体层远离所述衬底的表面上。
- 根据权利要求12所述的阵列基板,其中,所述氢阻挡层和所述第一电极层同层设置。
- 根据权利要求1所述的阵列基板,其中,所述第一导电类型半导体层在不含有氢的氛围中制作。
- 一种显示面板,其中,包括权利要求1-15中任一项所述的阵列基板。
- 一种制作阵列基板的方法,包括:在衬底上形成薄膜晶体管;在所述薄膜晶体管远离所述衬底的一侧形成第一半导体层;在所述第一半导体层远离所述薄膜晶体管的表面上形成中间半导体层,所述中间半导体层覆盖所述第一半导体层;在所述中间半导体层远离所述薄膜晶体管的表面上形成第二半导体层,所述第二半导体层覆盖所述中间半导体层;对所述第一半导体层、所述中间半导体层和所述第二半导体层进行图案化,以便在所述薄膜晶体管远离所述衬底的表面上形成构成PIN二极管的第一导电类型半导体层、本征半导体层和第二导电类型半导体层,其中,所述第一导电类型半导体层的材料包括下述材料中的一种或几种:金属氧化物、金属硫化物、金属硒化物、金属氮化物、金属磷化物或金属砷化物。
- 根据权利要求17所述的方法,其中,在衬底上形成薄膜晶体管的步骤包括:在衬底上依次形成有源层、栅绝缘层、栅极、层间绝缘层、源极和漏极,其中,第一半导体层形成在所述漏极或所述源极远离所述有源层的一侧,且所述第一半导体层覆盖暴露的所述层间绝缘层。
- 根据权利要求18所述的方法,其中,形成所述层间绝缘层的步骤包括:依次形成多个层叠设置的子层间绝缘层,其中,形成相邻两个所述子层间绝缘层的功率和速度均不同。
- 根据权利要求18所述的方法,还包括:在所述衬底上形成遮光层;在所述衬底上形成缓冲层,所述缓冲层覆盖所述遮光层,其中,所述有源层和所述层间绝缘层形成在缓冲层远离所述遮光层的表面上。
- 根据权利要求17所述的方法,其中,所述第一导电类型半导体层在不含有氢的氛围中制作。
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CN112259610B (zh) * | 2020-10-09 | 2024-03-22 | 武汉华星光电半导体显示技术有限公司 | 阵列基板及显示面板 |
CN114551619B (zh) * | 2021-11-09 | 2023-12-05 | 武汉华星光电半导体显示技术有限公司 | 显示面板和移动终端 |
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