WO2015039482A1 - 电致发光装置及其制备方法 - Google Patents
电致发光装置及其制备方法 Download PDFInfo
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- WO2015039482A1 WO2015039482A1 PCT/CN2014/080898 CN2014080898W WO2015039482A1 WO 2015039482 A1 WO2015039482 A1 WO 2015039482A1 CN 2014080898 W CN2014080898 W CN 2014080898W WO 2015039482 A1 WO2015039482 A1 WO 2015039482A1
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- Prior art keywords
- protective layer
- thin film
- film transistor
- substrate
- electrode
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000011241 protective layer Substances 0.000 claims abstract description 135
- 239000000758 substrate Substances 0.000 claims abstract description 88
- 239000010409 thin film Substances 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 64
- 238000005530 etching Methods 0.000 claims abstract description 19
- 229920002120 photoresistant polymer Polymers 0.000 claims description 36
- 239000010410 layer Substances 0.000 claims description 21
- 238000000059 patterning Methods 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 238000004380 ashing Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 27
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000005401 electroluminescence Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000003491 array Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
-
- 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
-
- 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
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
-
- 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
- H10K59/127—Active-matrix OLED [AMOLED] displays comprising two substrates, e.g. display comprising OLED array and TFT driving circuitry on different substrates
- H10K59/1275—Electrical connections of the two substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/50—Forming devices by joining two substrates together, e.g. lamination techniques
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Definitions
- Embodiments of the present invention relate to an electroluminescent device and a method of fabricating the same. Background technique
- OLED Organic Light Emitting Diode
- OELD Organic Electroluminescence Display
- an active matrix type OLED display device includes: a color filter substrate 20 and an array substrate 10.
- the array substrate 10 includes: a substrate 11, an array of thin film transistors 12, a protective layer 13 and a connection electrode 14 disposed on the substrate 11, and the connection electrode 14 is connected to the drain of the thin film transistor 12 through the protective layer via hole.
- the color filter substrate 20 includes: a second substrate 21, a color filter layer (including a black matrix 221 and a color block 222R/G/B separated by a black matrix 221), a flat layer 23, and a first electrode 24, which are sequentially disposed on the second substrate 21.
- the array substrate 10 and the color filter substrate 20 are separately formed, and then the sealant 30 is applied to the edge of the array substrate 10 or the color filter substrate 20, and the array substrate 10 and the color filter substrate 20 are paired with each other.
- the electrodes 26 are in contact with the connection electrodes 14 on the array substrate 10 to achieve electrical connection.
- connection electrode 14 is usually made thicker (generally 2-3 microns), but This may result in a long process of forming a film at the time of preparation and an etching difficulty when the etched film forms the connection electrode 14.
- Embodiments of the present invention provide an electroluminescent device and a method of fabricating the same.
- At least one embodiment of the present invention provides an electroluminescent device, including: an array substrate; the array substrate includes: a substrate, a thin film transistor sequentially disposed on the substrate, covering the a protective layer over the thin film transistor, and a connection electrode disposed on the protective layer; a protective layer under the connection electrode is convex toward a side away from the substrate to form a bump; the protective layer is in a corresponding thin film transistor A drain of the protective layer is disposed at a position of the drain, and the connection electrode is connected to a drain of the thin film transistor through the via of the protective layer.
- the protective layer via is located on the boss.
- the protective layer via is located on one side of the boss, and the connection electrode covers the bump and the protective layer via.
- the connecting electrode has a thickness of 0.3 to 1 micron.
- the total thickness of the protective layer is 2 to 4 microns, and the height of the step of the boss is 1.5 to 2.5 microns.
- the connecting electrode is made of one or more of the following materials: copper, molybdenum, tin, aluminum, silver.
- the protective layer is made of one or more of the following materials:
- Silicon nitride, silicon oxide, or photosensitive resin Silicon nitride, silicon oxide, or photosensitive resin.
- the electroluminescent device further includes: a color filter substrate; the color filter substrate includes: a second substrate, a color filter layer sequentially disposed on the second substrate, a flat layer, and a first electrode And an organic light emitting layer and a second electrode; the second electrode is in contact with and electrically connected to the connecting electrode.
- At least one embodiment of the present invention further provides a method of fabricating an electroluminescent device, comprising: a color film substrate process, an array substrate process, a color filter substrate, and an array substrate pair process, wherein the array substrate process comprises:
- connection electrode is formed over the protective layer, and the connection electrode is connected to a drain of the thin film transistor through the protective layer via.
- the method forms the bump at a predetermined position where the connection electrode is subsequently formed by a multi-step exposure process, and the protective layer via is formed at the position corresponding to the drain of the thin film transistor.
- the method further includes:
- Coating a photoresist on the protective layer Performing a multi-step exposure, after developing, forming a photoresist pattern on the protective layer, so that a photoresist of a first thickness is retained in the photoresist pattern at a predetermined position where the connection electrode is subsequently formed,
- the preset position of the protective layer via hole is formed on the drain of the thin film transistor without retaining the photoresist, and the second thickness of the light is retained except for the preset position of the connection electrode and the preset position of the protective layer via hole.
- Engraving, and the first thickness is greater than the second thickness;
- the remaining photoresist in the corresponding region of the first thickness is peeled off.
- the method can include:
- the photoresist is coated again, and the protective layer via hole is formed by a patterning process for a second time to form a predetermined position of the via hole of the protective layer over the drain of the thin film transistor.
- the method in one example includes:
- FIG. 1 is a schematic structural view of an active matrix type OLED display device
- FIG. 2(a) is a schematic view showing an exemplary structure of an electroluminescence display device according to Embodiment 1 of the present invention
- FIG. 2(b) is a schematic diagram showing another example structure of an electroluminescence display device according to Embodiment 1 of the present invention.
- FIG. 4 is a flow chart of forming a protective layer by a multi-step exposure process according to Embodiment 2 of the present invention
- FIG. 5(a) is a schematic diagram of multi-step exposure in Embodiment 2 of the present invention
- FIG. 5(b) is a schematic view showing a photoresist pattern formed on a protective layer in Embodiment 2 of the present invention.
- FIG. 5(c) is a schematic structural view of the array substrate after the first etching in the second embodiment of the present invention
- FIG. 5(d) is a schematic structural view of the array substrate after the ashing process according to the second embodiment of the present invention
- FIG. 5(e) is a schematic structural view of the array substrate after the second etching in the second embodiment of the present invention
- FIG. 5(f) is a schematic structural view of the array substrate after removing the remaining photoresist according to the second embodiment of the present invention
- (a) is a schematic view showing exposure of a conventional mask in the second embodiment of the present invention
- FIG. 6(b) is a schematic structural view of the array substrate after the first patterning process in the second embodiment of the present invention
- FIG. 6(c) is a schematic structural view of the array substrate after the second patterning process in the second embodiment of the present invention.
- an embodiment of the present invention provides an electroluminescent device.
- the device includes: an array substrate 10.
- the array substrate 10 includes a substrate 11, a thin film transistor 12 sequentially disposed on the substrate 11, a protective layer 13 overlying the thin film transistor 12, and a connection electrode 14 disposed over the protective layer 13.
- the protective layer 13 under the connection electrode 14 is convex toward a side away from the substrate 11.
- a boss 131 is formed.
- the protective layer 13 is provided with a protective layer via 132 at a position corresponding to the drain 122 of the thin film transistor 12.
- the connection electrode 14 is connected to the drain of the thin film transistor 12 through the protective layer via 132.
- a TFT circuit (drive circuit) is provided on the array substrate 10 for driving and compensating the OELD.
- the driver circuit includes at least one thin film transistor for driving.
- the thin film transistor 12 in this embodiment refers to a thin film transistor for driving in a driving circuit.
- the drain electrode 122 of the thin film transistor 12 is taken out through the connection electrode 14, and the connection electrode 14 and the second electrode 26 of the OELD are brought into contact with the case, thereby realizing electrical connection between the drive circuit and the light-emitting device.
- the implementation of the driving circuit is not directly related to the present invention, and the implementation of the present invention is not affected. Therefore, the specific implementation manner of the driving circuit is not limited in the embodiment of the present invention, and may be a person skilled in the art. Any implementation that is well known.
- the protective layer 13 under the connection electrode 14 is designed as a bump, and the connection electrode 14 is raised, so that the thickness of the connection electrode 14 can be further reduced, so that the film formation time in the preparation process of the connection electrode 14 is shortened. The difficulty of etching is reduced and the production efficiency is improved.
- the connection electrode 14 is raised to ensure the reliability of the electrical connection between the thin film transistor 12 and the second electrode 26, and the film can be prevented from being pressed or rubbed against the film during the process of the process and after the process. Transistor arrays cause damage and improve yield.
- the protective layer via 132 is located in the bump 131, and the connection electrode 14 is connected to the drain 122 of the thin film transistor 12 through the underlying protective layer via 132.
- the land 131 overlaps the drain 122 of the thin film transistor 12 in position.
- the protective layer via 132 is located on one side of the bump 131, and the connecting electrode 14 covers the bump 131 and the protective layer via 132. Connecting electrode 14 through protective layer via
- the land 131 and the drain 122 of the thin film transistor 12 do not overlap in position.
- the connecting electrode 14 of this embodiment may be made of one or more of copper, molybdenum, tin, aluminum, and silver.
- the thickness of the connection electrode 14 is preferably 0.3 to 1 ⁇ m. Compared with the prior art of 2-3 micrometers, the thickness of the connection electrode 14 of the embodiment is greatly reduced, thereby saving the time for depositing the connection electrode 14, simplifying the process in the subsequent etching, reducing the etching difficulty, and improving the production. effectiveness.
- the protective layer 13 in this embodiment may be made of one or more of the following materials: silicon nitride, silicon oxide, or a photosensitive resin.
- the protective layer 13 may be a single film layer formed of one of the materials, or may be a composite film layer formed of two or more of them.
- a silicon nitride film layer may be formed first, and then a silicon oxide film layer is formed on the silicon nitride film layer, and the silicon nitride film layer and the silicon oxide film layer are collectively
- the protective layer 13 is formed.
- the protective layer 13 is made of a photosensitive resin material, and the protective layer 13 with the boss 131 described in this embodiment can be formed by exposure and development.
- the photosensitive resin may be a polyacrylic resin, a polyimide resin, or a polyamide resin.
- the total thickness d2 of the protective layer 13 is preferably 2 to 4 micrometers.
- the height dl of the bump 131 is 1.5 to 2.5 micrometers.
- the electroluminescent device further includes: a color filter substrate 20.
- the color filter substrate 20 includes: a second substrate 21, a color filter layer sequentially disposed on the second substrate 21, a flat layer 23, a first electrode 24, an organic light-emitting layer 15, and a second electrode 26.
- the second electrode 26 is in contact with and electrically connected to the connection electrode 14.
- the thickness of the connecting electrode can be further reduced, so that the film forming time in the preparation process of the connecting electrode is shortened, the etching difficulty is lowered, and the production efficiency is improved.
- the connection electrode is raised to ensure the reliability of the electrical connection between the thin film transistor and the second electrode, and the damage of the thin film transistor array can be avoided by pressing or rubbing the color film substrate and the array substrate after the process. , improve the yield rate.
- the electro-display device of this embodiment may be: any product or component having a display function such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
- the embodiment of the invention further provides a method for preparing an electroluminescent device, which comprises: a color film substrate process, an array substrate process, a color film substrate and an array substrate pair process.
- the array substrate process includes:
- Step 101 forming a thin film transistor 12 on the substrate 11;
- Step 102 forming a protective layer 13 on the substrate 11 on which the thin film transistor 12 is formed, and forming a bump 131 at a predetermined position where the connection electrode is subsequently formed by a patterning process, and forming a protective layer at a position corresponding to the drain 122 of the thin film transistor 12.
- Step 103 A connection electrode 14 is formed on the protective layer 13, and the connection electrode 14 is connected to the drain of the thin film transistor 12 through the protective layer via 132.
- a TFT circuit for driving and compensating the OELD is formed on the substrate 11, but the specific implementation of the drive circuit is in accordance with the present invention. There is no direct relationship, so this embodiment will not be described again.
- the thin film transistor 22 is a driving thin film transistor in a driving circuit. The drain of the thin film transistor 22 is taken out through the connection electrode 14. The connection electrode 14 and the second electrode 26 of the OELD are in contact with each other to achieve electrical connection between the drive circuit and the light-emitting device.
- step 102 the protective layer 13 corresponding to the underside of the second electrode 26 is formed into a shape of a boss, so that the second electric The protective layer 13 under the pole 26 is higher than the protective layer at other positions, thereby functioning to support the connection electrode 14.
- step 103 a thin connection electrode 14 (reference thickness: 0.3 to 1 micrometer) is formed on the bump 131, and the thin film transistor 22 is connected through the protective layer via 132 to connect the top surface and the second electrode of the post-casing electrode 14. 26 contacts.
- the protective layer 13 corresponding to the underside of the second electrode 26 is formed into the shape of the boss 131, and a thin connecting electrode 14 is formed on the boss 131 (connecting electrode thickness)
- the reference value is 0.3 to 1 micrometer), so that the film formation time in the preparation process of the connection electrode is shortened, the etching difficulty is lowered, and the production efficiency is improved.
- the connection electrode 14 is raised to ensure the reliability of the electrical connection between the thin film transistor 22 and the second electrode 26, and the film can be prevented from being squeezed or rubbed against the film during the process of the process and after the process. Transistor arrays cause damage and improve yield.
- the bump 131 and the protective layer may be formed at a predetermined position where the connection electrode 14 is subsequently formed by a multi-step exposure process.
- the hole 132 is such that the protective layer 13 under the second electrode 26 is higher than the protective layer at other positions, thereby functioning to support the connection electrode 14.
- the multi-step exposure process that is, the multi-tone mask process, refers to exposure using a multi-tone mask (MTM, Multi Tone Mask) after the photoresist is coated on the protective layer. Since the light intensity transmitted through each part of the multi-step mask is different, the corresponding portions of the photoresist are not exposed to much intensity, and after development, a photoresist pattern having different photoresist thicknesses can be obtained.
- MTM Multi Tone Mask
- step 102 uses a multi-step exposure process to form the bump 131 and the protective via 132, including the following sub-steps:
- a protective layer 13 is formed, and a photoresist 40 is coated on the protective layer 13.
- multi-level exposure is performed using a multi-tone mask 50.
- a photoresist pattern is formed on the protective layer 13 so that a photoresist of a first thickness hi is retained in the photoresist pattern at a predetermined position where the connection electrode is subsequently formed, at the drain of the thin film transistor 12
- the preset position of the subsequent protective via hole is not retained, and the photoresist of the second thickness h2 is retained in the region except the preset position of the connection electrode and the preset position of the via of the protective layer, and the first thickness Hi is greater than the second thickness h2.
- a multi-step masking process is used to reduce the number of patterning processes in the array substrate preparation process, thereby effectively reducing the manufacturing cost and improving the yield.
- Step 2 includes:
- Step 1 forming a protective layer 13 on the substrate on which the thin film transistor 12 is formed;
- Step 2 applying a photoresist 40 on the protective layer 13, and forming a bump 131 on the protective layer 13 at a predetermined position on the protective layer 13 by subsequently forming a connection electrode, as shown in FIG. 6(a), 6(b). ;
- Step 3 Applying the photoresist 40 again, and forming a protective layer via 132 by a patterning process at a predetermined position on the drain of the thin film transistor to form a protective layer via hole, as shown in FIG. 6(c).
- the predetermined pattern is transferred to a specific film layer in the semiconductor preparation process, and the film layer is patterned to present the same pattern as the preset pattern, and the patterning process includes but is not limited to the ordinary meaning.
- the lithography process is not limited to the ordinary meaning.
- the protective layer 13 may be made of one or more of the following materials: silicon nitride, silicon oxide, or a photosensitive resin.
- the photoresist may be directly applied for exposure and development, and the etching process is not required after the development.
- Step 2 includes: Step 1: In the formation On the substrate with the thin film transistor, a photosensitive resin is applied to form the protective layer 13; Step 2, by multi-step exposure development or double exposure development, a bump 131 is formed on the protective layer 13 at a predetermined position where the connection electrode is subsequently formed, and A predetermined position of the protective layer via hole is formed over the drain 122 of the thin film transistor 12 to form a protective layer via 132.
- the protective layer 13 is directly subjected to multi-step exposure and then developed to form the protective layer 13 provided with the bump 131 and the protective layer via 132 as shown in Fig. 2(a).
- the double exposure development the specific process can refer to the first example, eliminating all the steps of applying the photoresist, directly performing exposure, development, and no etching process after development.
- the above steps can form the array substrate shown in Figs. 2(a) and 2(b) except that the mask used in the process of forming the protective layer 13 differs, such as the position and shape of the boss.
- the protective layer is designed in the shape of a boss, and the connecting electrode is padded, so that the thickness of the connecting electrode can be further reduced, so that the film forming time in the preparation process of the connecting electrode is shortened, the etching difficulty is lowered, and the production efficiency is improved.
- the connection electrode is raised to ensure the reliability of the connection between the thin film transistor and the second electrode, and the film substrate and the array substrate are mutually squeezed or rubbed to damage the thin film transistor array during and after the process. , improve the yield rate.
- the electroluminescent device and the method for fabricating the same according to the embodiments of the present invention can further reduce the thickness of the connecting electrode by designing the protective layer under the connecting electrode as a boss shape and padding the connecting electrode (the thickness of the connecting electrode of the present invention) It can be reduced to 0.3 ⁇ 1 ⁇ m), so that the film formation time in the preparation process of the connecting electrode is shortened, the etching difficulty is lowered, and the production efficiency is further improved.
- the connection electrode is padded to ensure the reliability of the electrical connection between the thin film transistor and the second electrode, and at the same time, the film transistor array and the array substrate are pressed or rubbed against each other during the process of the process and the substrate is damaged. , improve the yield rate.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/416,904 US9520453B2 (en) | 2013-09-23 | 2014-06-26 | Electroluminescent device and manufacturing method thereof |
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CN201310436180.3A CN103474453B (zh) | 2013-09-23 | 2013-09-23 | 电致发光装置及其制备方法 |
CN201310436180.3 | 2013-09-23 |
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US (1) | US9520453B2 (zh) |
CN (1) | CN103474453B (zh) |
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Families Citing this family (9)
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CN103474453B (zh) | 2013-09-23 | 2016-09-21 | 京东方科技集团股份有限公司 | 电致发光装置及其制备方法 |
CN103715228B (zh) | 2013-12-26 | 2016-04-13 | 京东方科技集团股份有限公司 | 阵列基板及其制造方法、显示装置 |
CN104766933B (zh) | 2015-04-30 | 2016-11-16 | 京东方科技集团股份有限公司 | 一种隔离柱及其制作方法、显示面板及显示装置 |
JP6677386B2 (ja) * | 2016-02-16 | 2020-04-08 | 天馬微電子有限公司 | 表示装置および表示装置の製造方法 |
CN205900543U (zh) * | 2016-05-18 | 2017-01-18 | 武汉华星光电技术有限公司 | 一种oled显示面板 |
CN106298858B (zh) * | 2016-09-22 | 2019-05-14 | 上海天马微电子有限公司 | 显示面板、显示装置及显示面板的制造方法 |
US11342396B2 (en) * | 2018-02-09 | 2022-05-24 | Boe Technology Group Co., Ltd. | Organic light emitting diode display panel, organic light emitting diode counter substrate, and fabricating method thereof |
CN109686764A (zh) * | 2018-12-19 | 2019-04-26 | 武汉华星光电半导体显示技术有限公司 | 一种显示面板及其制作方法 |
CN111341933B (zh) * | 2020-03-03 | 2023-04-07 | 京东方科技集团股份有限公司 | 一种显示面板及其制备方法、显示装置 |
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CN1638575A (zh) * | 2003-12-15 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | 双面板型有机电致发光器件及其制造方法 |
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CN103474453A (zh) * | 2013-09-23 | 2013-12-25 | 京东方科技集团股份有限公司 | 电致发光装置及其制备方法 |
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