WO2015039481A1 - 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
- Publication number
- WO2015039481A1 WO2015039481A1 PCT/CN2014/080896 CN2014080896W WO2015039481A1 WO 2015039481 A1 WO2015039481 A1 WO 2015039481A1 CN 2014080896 W CN2014080896 W CN 2014080896W WO 2015039481 A1 WO2015039481 A1 WO 2015039481A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- electrode
- protective layer
- array substrate
- connection electrode
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 167
- 239000011241 protective layer Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000010409 thin film Substances 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000010408 film Substances 0.000 claims abstract description 8
- 239000011159 matrix material Substances 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 16
- 238000007789 sealing Methods 0.000 claims 3
- 229920000178 Acrylic resin Polymers 0.000 claims 1
- 229920001225 polyester resin Polymers 0.000 claims 1
- 239000004645 polyester resin Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 19
- 230000001070 adhesive effect Effects 0.000 abstract description 19
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005530 etching Methods 0.000 abstract description 3
- 239000000565 sealant Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 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
- H10K59/123—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
- H10K71/00—Manufacture or treatment specially adapted for 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
- 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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/40—Thermal treatment, e.g. annealing in the presence of a solvent vapour
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
- PDA personal digital assistants
- LCD Organic Electroluminescence Display
- the OLED display device is divided into a passive matrix type and an active matrix type, wherein the active matrix type OLED display device means that each OLED is controlled by a Thin Film Transistor (TFT) circuit to control a current flowing through the OLED, and has a light emission. High efficiency and good image display.
- TFT Thin Film Transistor
- the active matrix type OLED display device includes an array substrate 110 and a color filter substrate 120.
- the array substrate 110 includes: a first substrate 111, an array of thin film transistors 112 sequentially disposed on the first substrate 111, a protective layer 113, and a connection electrode 114, and the connection electrode 114 is connected to the drain of the thin film transistor 112 through the via hole of the protective layer.
- the color filter substrate 120 includes: a second substrate 121, a color filter layer, a flat layer 123, a first electrode 124, an organic electro-luminescence layer (organic EL layer) 125, and a second organic substrate Second electrode 126.
- the color filter layer includes: a black matrix 1221, a color block 1222 separated by a black matrix 1221. After the color film substrate 120 and the array substrate 110 are paired, the second electrode 126 is in contact with the connection electrode 114 on the array substrate 110 to achieve electrical connection.
- the thin film transistor is lifted.
- an electroluminescent device comprises: a counter substrate and an array substrate.
- the array substrate includes: a first substrate, and a thin film transistor sequentially disposed on the first substrate, a first protective layer, and a first connection electrode connected to the drain of the thin film transistor.
- the opposite substrate includes: a second substrate, and first electrodes, an organic light emitting layer, and a second electrode sequentially disposed on the second substrate. The second electrode and the first connection electrode are connected together by a conductive adhesive.
- the conductive paste is disposed between the second electrode and the first connection electrode.
- the conductive paste is distributed only on the contact faces of the second electrode and the first connection electrode, so that the conductive paste is disposed in a discontinuous distribution.
- the conductive paste is disposed to be continuously distributed.
- the first protective layer is convex toward a side away from the first substrate to form a first boss, and the first connecting electrode is disposed on the first boss.
- the opposite substrate further includes a second protective layer and a second connecting electrode; the second protective layer covers the second electrode and the organic light emitting layer under the second electrode, the second protective layer Providing a protective layer via hole; the second connection electrode is disposed on the second protective layer, and is connected to the second electrode through the protective layer via hole; the conductive paste is disposed on the second connection Between the electrode and the first connection electrode.
- the second protective layer is convex toward a side away from the second substrate to form a second boss, and the second connecting electrode is disposed on the second boss.
- the opposite substrate and the array substrate are sealed together by a frame sealant at an edge; the conductive paste is filled in a space surrounded by the opposite substrate, the array substrate, and the sealant.
- the conductive paste includes: a base resin and conductive particles dispersed in the base resin; and the base resin includes an epoxy resin, an acrylate resin, and a polyurethane.
- the first protective layer and/or the second protective layer may be made of one of the following materials, or a composite film layer made of a plurality of materials: silicon nitride, silicon oxide, or photosensitive resin. .
- a method of fabricating an electroluminescent device includes an array substrate and an opposite substrate.
- the array substrate includes: a first substrate, and a thin film transistor sequentially disposed on the first substrate, a first protective layer, and a first connection electrode connected to the drain of the thin film transistor.
- the opposite substrate includes: a second substrate, and first electrodes, an organic light emitting layer, and a second electrode sequentially disposed on the second substrate.
- the method includes: a process of opposing substrates, The column substrate process, the opposite substrate and the array substrate are processed in a box process.
- the process of the counter substrate and the array substrate is as follows: Step 1.
- Step 2 Apply a conductive adhesive on the opposite surface of the opposite substrate and/or the opposite surface of the array substrate; Step 2. Apply the opposite substrate to the substrate The array substrate is subjected to a pair of boxes, and at the same time, the conductive paste is heated and pressurized during the process of the cassette, so that the second electrode and the first connection electrode are connected together by a conductive adhesive.
- step 1 the conductive paste is applied only to the top surface of the second electrode on the opposite substrate and/or the top surface of the first connection electrode.
- a conductive paste is entirely applied to one side of the counter substrate of the opposite substrate and/or to the side of the counter substrate of the array substrate.
- the opposite substrate and the array substrate processing process further includes applying a sealant on the opposite side of the opposite substrate and/or the opposite side of the array substrate.
- FIG. 1 is a schematic structural view of an active matrix type OLED display device according to a technique
- FIG. 2 is a schematic structural view of an electroluminescent display device according to an embodiment of the present invention
- FIG. 3 is a schematic structural view of an electroluminescent display device according to an embodiment of the invention.
- FIG. 4 is a schematic structural view of an electroluminescent display device according to an embodiment of the invention.
- FIG. 5 is a schematic structural diagram of an electroluminescent display device according to an embodiment of the invention.
- FIG. 6 is a schematic structural view of an electroluminescent display device according to an embodiment of the invention.
- FIG. 7 is a schematic structural diagram of an electroluminescent display device according to an embodiment of the invention.
- FIG. 8 is a schematic structural view of an electroluminescent display device according to an embodiment of the present invention
- FIG. 9 is a schematic structural view of an electroluminescent display device according to an embodiment of the present invention.
- Embodiments of the present invention provide an electroluminescent device.
- the device includes: an array substrate 10 and an opposite substrate 20.
- the array substrate 10 includes: a first substrate 11, a thin film transistor 12 sequentially disposed on the first substrate 11, a first protective layer 131, and a first connection electrode 141 connected to the drain of the thin film transistor.
- the opposite substrate 20 is, for example, a color filter substrate and includes: a second substrate 21, a color filter layer, a flat layer 23, a first electrode 24, an organic light-emitting layer 25, and a second electrode 26 which are sequentially disposed on the second substrate 21,
- the color filter layer includes: a black matrix 221 (BM), a color block 222 (red, green, blue, R/G/B in the figure) separated by a black matrix 221, and a second electrode 26 and a first connection electrode 141. They are connected together by a conductive paste 40.
- the active electroluminescent device includes: a counter substrate 20 and an array substrate 10, and a color filter layer and a light emitting device OLED are disposed on the opposite substrate 20.
- the light emitting device OLED is composed of a first electrode 24 and an organic light emitting layer. 25 and a second electrode 26; a TFT circuit (drive circuit) is disposed on the array substrate 10 for driving and compensating the light emitting device OLED.
- the driving circuit has various implementation modes, but the driving circuit includes at least one In the case of a thin film transistor to be driven, the thin film transistor 12 in this embodiment refers to a thin film transistor for driving in a driving circuit. The drain of the thin film transistor 12 is drawn through the first connection electrode 141. After the counter substrate 20 and the array substrate 10 are aligned, the second electrode 26 of the OLED is butted to the first connection electrode 141 on the array substrate 10, thereby realizing the driving circuit and Electrical connection of the light emitting device.
- the electroluminescent device provided by the embodiment of the invention applies a conductive adhesive on one side of the box when the opposite substrate and the array substrate are paired, and heats and presses the conductive adhesive in the process of the box to make the second electrode and the second electrode
- a connecting electrode is connected together by a conductive adhesive, and the conductive material in the conductive adhesive turns on the second electrode and the first connecting electrode, and the connection between the light emitting device OLED and the thin film transistor is more reliable.
- the connection between the second electrode and the first connection electrode is sufficiently reliable, so that the thickness of the first connection electrode can be reduced (can be reduced to 0.3 to 1 micrometer), thereby making the formation of the first connection electrode
- the film time is shortened, the etching difficulty is reduced, and the production efficiency is further improved.
- the buffering action of the conductive adhesive can also reduce the defects caused by the pressing or rubbing of the opposite substrate and the array substrate, and improve the yield.
- the conductive paste 40 is disposed between the second electrode 26 and the first connection electrode 141.
- the conductive paste 40 may be disposed as a discontinuous distribution as shown in FIG. 2, and the conductive paste 40 is only distributed on the contact surface of the second electrode 26 and the first connection electrode 141; or may be continuously distributed as shown in FIG. .
- the opposite substrate 20 further includes: a second protective layer 27 and a second connecting electrode 28; the second protective layer 27 covers the second The organic light-emitting layer 25 under the electrode 26 and the second electrode 26, the second protective layer 27 is provided with a protective layer via 271; the second connecting electrode 28 is disposed on the second protective layer 27, and passes through the protective layer via 271 and The two electrodes 26 are connected.
- the conductive paste 40 is disposed between the second connection electrode 28 and the first connection electrode 141.
- the conductive adhesive 40 may be disposed as a discontinuous distribution as shown in FIG. 4, and the conductive adhesive 40 is only distributed on the contact surface of the second connection electrode 28 and the first connection electrode 141; or may be arranged continuously as shown in FIG. distributed.
- the second protective layer 27 By providing the second protective layer 27, it is possible to play a buffering role in the process of the cartridge, prevent the organic light-emitting layer 25 from being excessively stressed, protect the organic light-emitting layer 25, and further reduce the connection electrode (the connection electrode in this example)
- the thickness of the first connection electrode 141 and the second connection electrode 28) is included.
- the first protective layer 13 under the first connection electrode 141 on the array substrate 10 is convex toward the side away from the first substrate 11 to form a surface.
- the first boss 132 is convex toward the side away from the first substrate 11 to form a surface.
- the first bump 132 may be prepared on the first protective layer 13 of the array substrate 10, and the first connecting electrode 141 may be formed on the first bump 132.
- a conductive paste is prepared between the second electrode 26 and the first connection electrode 141.
- the first boss 132 is located directly above the drain of the thin film transistor 12, and the first connection electrode 141 is disposed on the first boss 132 and protected by the first boss 132.
- the via hole is connected to the drain of the thin film transistor 12; alternatively, as shown in FIG. 7, the first bump 132 is located above the thin film transistor 12, but the position is shifted from the drain of the thin film transistor 12, and the protective layer via is located.
- the first connection electrode 141 covers the first land 132 and the protective layer via hole adjacent to the first land 132 so that the first connection electrode 141 is connected to the drain of the thin film transistor 12.
- the second connecting electrode 28 can be raised by providing a boss on the opposite substrate 20.
- the second protective layer 27 under the second connecting electrode 28 is away from the first One side of the two substrates 21 is convex to form a second boss 272.
- the first protective layer 131 and/or the second protective layer 27 are disposed to have a boss, and the connection electrode is padded to make the connection more reliable, and the thickness of the connection electrode is reduced (can be reduced to 0.3 to 1 micrometer), thereby The film formation time in the preparation process of the connection electrode is shortened, and the etching difficulty is reduced.
- the defects caused by the pressing or rubbing of the opposite substrate and the array substrate can be reduced, and the yield is improved.
- the counter substrate 20 and the array substrate are opposite to each other.
- the conductive adhesive 40 is an adhesive having certain conductive properties after curing or drying, and generally comprises: a matrix resin and conductive particles dispersed in the matrix resin; and the conductive adhesive 40 passes through the matrix resin. Bonding combines the conductive particles to form a conductive path to achieve an electrically conductive connection of the material to be bonded.
- the matrix resin includes, but is not limited to, an epoxy resin, an acrylate resin, a polyurethane.
- the first protective layer or the second protective layer according to the embodiment of the present invention is made of one of the following materials, or a composite film layer made of a plurality of materials: silicon nitride, silicon oxide, or photosensitive resin.
- the electroluminescent device made the connection between the light emitting device OLED and the thin film transistor more reliable through the conductive adhesive, and does not cause any impurity even if the electrode (the second electrode and/or the first connecting electrode) is in contact with the surface. Poor contact. Moreover, the thickness of the connection electrode can be reduced, and the defects caused by the pressing or rubbing of the opposing substrate and the array substrate can be avoided, and the yield can be improved.
- the electro-display device of the embodiment may be: 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, or any product or component having a display function.
- the embodiment of the invention further provides a method for preparing an electroluminescent device, comprising: a process of a substrate, an array substrate process, a counter substrate and an array substrate.
- the opposite substrate and the array substrate are processed in a box process, including:
- Step 101 Apply a conductive adhesive to the opposite surface of the opposite substrate and/or the opposite surface of the array substrate; Step 102, pair the opposite substrate with the array substrate, and simultaneously The conductive paste is heated and pressurized to connect the second electrode and the first connecting electrode through the conductive adhesive.
- step 101 only the top surface of the second electrode and/or the first connection electrode on the opposite substrate may be The top surface is coated with a conductive paste to save material.
- a conductive paste to save material.
- the process of the opposite substrate and the array substrate further includes the step of applying a sealant on the opposite side of the opposite substrate and/or the opposite side of the array substrate.
- a conductive paste with conductive particles is disposed on the opposite substrate and/or the array substrate, and the conductive adhesive is heated and pressurized in the process of the box.
- the connection of the light emitting device OLED and the thin film transistor is more reliable.
- the thickness of the connection electrode can be reduced, the defects caused by the pressing or rubbing of the opposite substrate and the array substrate can be reduced, and the yield can be improved.
- the color filter layers are all formed on the opposite substrate 20; however, the embodiment of the present invention is not limited thereto, and the color filter layer may be formed on the array substrate 10.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/418,588 US9508779B2 (en) | 2013-09-23 | 2014-06-26 | Electroluminescence display device and fabrication method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310436164.4 | 2013-09-23 | ||
CN201310436164.4A CN103474578B (zh) | 2013-09-23 | 2013-09-23 | 电致发光装置及其制备方法 |
Publications (1)
Publication Number | Publication Date |
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WO2015039481A1 true WO2015039481A1 (zh) | 2015-03-26 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2014/080896 WO2015039481A1 (zh) | 2013-09-23 | 2014-06-26 | 电致发光装置及其制备方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9508779B2 (zh) |
CN (1) | CN103474578B (zh) |
WO (1) | WO2015039481A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103474578B (zh) | 2013-09-23 | 2016-08-10 | 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 |
CN103715204B (zh) * | 2013-12-27 | 2015-05-27 | 京东方科技集团股份有限公司 | 阵列基板及其制作方法、显示装置 |
KR102453921B1 (ko) * | 2015-09-03 | 2022-10-13 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 제조 방법 |
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 |
CN106206427A (zh) | 2016-08-15 | 2016-12-07 | 京东方科技集团股份有限公司 | 显示基板的制作方法、显示装置的制作方法以及显示基板 |
WO2019218342A1 (en) * | 2018-05-18 | 2019-11-21 | Boe Technology Group Co., Ltd. | Organic light emitting diode counter substrate and display panel, array substrate for organic light emitting diode display panel, and fabricating method thereof |
Citations (3)
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JP2004327215A (ja) * | 2003-04-24 | 2004-11-18 | Seiko Epson Corp | 電気光学装置、電気光学装置用基板、電気光学装置の製造方法および電子機器 |
CN103474578A (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 |
CN203456465U (zh) * | 2013-09-23 | 2014-02-26 | 京东方科技集团股份有限公司 | 电致发光装置 |
Family Cites Families (7)
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JPH1084014A (ja) * | 1996-07-19 | 1998-03-31 | Shinko Electric Ind Co Ltd | 半導体装置の製造方法 |
JP2002246582A (ja) * | 2000-10-26 | 2002-08-30 | Canon Inc | 放射線検出装置、その製造方法及びシステム |
JP2004342432A (ja) * | 2003-05-15 | 2004-12-02 | Nec Corp | 有機el表示装置 |
US7132801B2 (en) | 2003-12-15 | 2006-11-07 | Lg.Philips Lcd Co., Ltd. | Dual panel-type organic electroluminescent device and method for fabricating the same |
JP2007264005A (ja) * | 2006-03-27 | 2007-10-11 | Seiko Epson Corp | 光学表示装置、光学表示装置の製造方法および電子機器 |
CN100448021C (zh) * | 2007-08-13 | 2008-12-31 | 京东方科技集团股份有限公司 | 电致发光显示器件及其制造方法 |
CN102160185B (zh) * | 2008-09-22 | 2013-04-03 | 阿尔卑斯电气株式会社 | Mems传感器 |
-
2013
- 2013-09-23 CN CN201310436164.4A patent/CN103474578B/zh active Active
-
2014
- 2014-06-26 US US14/418,588 patent/US9508779B2/en active Active
- 2014-06-26 WO PCT/CN2014/080896 patent/WO2015039481A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004327215A (ja) * | 2003-04-24 | 2004-11-18 | Seiko Epson Corp | 電気光学装置、電気光学装置用基板、電気光学装置の製造方法および電子機器 |
CN103474578A (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 |
CN203456465U (zh) * | 2013-09-23 | 2014-02-26 | 京东方科技集团股份有限公司 | 电致发光装置 |
Also Published As
Publication number | Publication date |
---|---|
US20160035804A1 (en) | 2016-02-04 |
CN103474578A (zh) | 2013-12-25 |
CN103474578B (zh) | 2016-08-10 |
US9508779B2 (en) | 2016-11-29 |
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