CN107749418B - Processing technology of organic light-emitting layer assembly of double-sided display device - Google Patents
Processing technology of organic light-emitting layer assembly of double-sided display device Download PDFInfo
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- CN107749418B CN107749418B CN201710839269.2A CN201710839269A CN107749418B CN 107749418 B CN107749418 B CN 107749418B CN 201710839269 A CN201710839269 A CN 201710839269A CN 107749418 B CN107749418 B CN 107749418B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- 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
Abstract
The invention relates to the technical field of display, in particular to a processing technology of an organic light-emitting layer assembly of a double-sided display device. The method comprises the following steps: the organic light-emitting layer assembly comprises a hole transmission functional layer, a light-emitting layer and an electron transmission functional layer which are sequentially stacked; the hole transport functional layer, the luminescent layer and the electron transport functional layer are prepared according to the prior art and are compounded according to the prior art; spraying pretreatment liquid on the surface of the compounded organic light-emitting layer assembly, and drying by using a vacuum drier at the drying temperature of 35 ℃ after the spraying is finished; placing the pretreated organic light-emitting layer assembly in a closed container, vacuumizing and keeping for more than 5 hours, and then recovering to normal pressure and taking out; finally, the mixture is placed into a forced air drying oven to be dried for 1 hour at the temperature of 40 ℃. According to the organic light-emitting layer assembly of the double-sided display device and the processing technology thereof, the light-emitting performance of the organic light-emitting layer assembly is remarkably improved through pretreatment and subsequent treatment.
Description
Technical Field
The invention relates to the technical field of display, in particular to a processing technology of an organic light-emitting layer assembly of a double-sided display device.
Background
An Organic Light Emitting Display (OLED) device has not only excellent Display performance, but also characteristics of self-luminescence, simple structure, ultra-lightness and thinness, fast response speed, wide viewing angle, low power consumption, flexible Display and the like, is known as a "dream Display", is favored by various Display manufacturers, and has become the dominant force of the third generation Display device in the Display technology field.
Disclosure of Invention
The invention aims to provide a double-sided display device, which can realize double-sided display and reduce the thickness of the double-sided display device. Meanwhile, the invention also provides an organic light-emitting layer component of the double-sided display device and a processing technology thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: a dual-sided display device comprising: a substrate, a first via hole formed on the substrate, a gate electrode disposed in the first via hole, a first insulating layer covering a first surface of the substrate, a first active layer disposed on a side of the first insulating layer away from the substrate, a first source electrode and a first drain electrode disposed on a side of the first insulating layer away from the substrate and respectively contacting both ends of the first active layer, a second insulating layer covering the first source electrode, the first drain electrode, the first insulating layer, a first anode disposed on a side of the second insulating layer away from the substrate, a first pixel defining layer covering the first anode and the second insulating layer, a first pixel defining groove disposed on the first pixel defining layer on a side of the first anode away from the substrate, a first organic light emitting layer disposed in the first pixel defining groove, a first cathode disposed on a side of the first pixel layer away from the substrate and contacting the first organic light emitting layer, a second cathode disposed on a side of the first pixel layer away from the substrate and contacting the first organic light emitting layer, The organic light emitting diode comprises a substrate, a first insulating layer covering a first surface of the substrate, a first active layer arranged on one side of the first insulating layer far away from the substrate, a first source electrode and a first drain electrode which are arranged on one side of the first insulating layer far away from the substrate and are respectively contacted with two ends of the first active layer, a second source electrode, a first drain electrode, a first insulating layer covering the first source electrode, the first drain electrode and the first insulating layer, a first anode arranged on the first insulating layer, a first pixel defining layer covering the first anode and the first insulating layer, a first pixel defining groove arranged on the first pixel defining layer on the first anode, a first organic light emitting layer arranged in the first pixel defining groove, and a first cathode arranged on the first pixel layer and contacted with the first organic light emitting layer.
The substrate is a flexible substrate.
The substrate is made of polyimide.
An organic light-emitting layer assembly of a double-sided display device comprises a hole transport functional layer, a light-emitting layer and an electron transport functional layer which are sequentially stacked.
A processing technology of an organic light emitting layer assembly of a double-sided display device comprises the following steps:
1) structure and separate processing
The organic light-emitting layer assembly comprises a hole transmission functional layer, a light-emitting layer and an electron transmission functional layer which are sequentially stacked;
the hole transport functional layer, the luminescent layer and the electron transport functional layer are prepared according to the prior art and are compounded according to the prior art;
2) and pretreatment
Spraying pretreatment liquid on the surface of the compounded organic light-emitting layer assembly, and drying by using a vacuum drier at the drying temperature of 35 ℃ after the spraying is finished;
the pretreatment liquid comprises the following components: 5 parts of sodium sulfate, 5.5 parts of titanium dioxide, 15 parts of isopropanol, 15 parts of epoxy acrylate and 0.5 part of soybean flavone;
the processing method of the pretreatment liquid comprises the following steps: sequentially adding the raw materials into a preparation kettle, heating to 55 ℃, and stirring and mixing for 1 hour to prepare the nano-composite material;
3) and subsequent treatment
Placing the pretreated organic light-emitting layer assembly in a closed container, vacuumizing and keeping for more than 5 hours, and then recovering to normal pressure and taking out; finally, the mixture is placed into a forced air drying oven to be dried for 1 hour at the temperature of 40 ℃.
The invention has the advantages and effects that:
1) according to the double-sided display device, the organic light emitting diode on the first surface and the driving thin film transistor of the organic light emitting diode on the second surface share one grid, and the grid is embedded into the substrate, so that double-sided display can be realized, the thickness of the double-sided display device can be reduced, and the portability of the double-sided display device can be improved.
2) According to the organic light-emitting layer assembly of the double-sided display device and the processing technology thereof, the light-emitting performance of the organic light-emitting layer assembly is remarkably improved through pretreatment and subsequent treatment.
Drawings
The invention is described in further detail below with reference to the accompanying drawings:
FIG. 1 is a structural diagram of a dual-sided display device of the present invention;
in the figure: the organic light emitting diode includes a substrate 1, a first via 12, a gate 2, a first insulating layer 3, a first active layer 4, a first source 5, a first drain 6, a second insulating layer 7, a first anode 8, a first pixel defining layer 9, a first pixel defining groove 91, a first organic light emitting layer 10, a first cathode 11, a third insulating layer 13, a second active layer 14, a second source 15, a second drain 16, a fourth insulating layer 17, a second anode 18, a second pixel defining layer 19, a second pixel defining groove 191, a second organic light emitting layer 20, and a second cathode 21.
Detailed Description
Example 1
Referring to fig. 1, the present invention provides a dual-sided display device, including: a substrate 1, a first via hole 12 formed on the substrate, a gate electrode 2 disposed in the first via hole 12, a first insulating layer 3 covering a first surface of the substrate 1, a first active layer 4 disposed on a side of the first insulating layer 3 remote from the substrate 1, a first source electrode 5 and a first drain electrode 6 disposed on a side of the first insulating layer 3 remote from the substrate and respectively contacting both ends of the first active layer 4, a second insulating layer 7 covering the first source electrode 5, the first drain electrode 6, the first insulating layer 3, a first anode electrode 8 disposed on a side of the second insulating layer 7 remote from the substrate, a first pixel defining layer 9 covering the first anode electrode 8 and the second insulating layer 7, a first pixel defining groove 91 disposed on the first pixel defining layer 9 on a side of the first anode electrode 8 remote from the substrate 1, a first organic light emitting layer 10 disposed in the first pixel defining groove 91, a second organic light emitting layer 10, A first cathode 11 disposed on a side of the first pixel layer 9 away from the substrate and in contact with the first organic light emitting layer 10, a third insulating layer 13 covering a second surface of the substrate 1, a second active layer 14 disposed on a side of the third insulating layer 13 away from the substrate 1, a second source electrode 15 and a second drain electrode 16 disposed on a side of the third insulating layer 13 away from the substrate and in contact with both ends of the second active layer 14, respectively, a fourth insulating layer 17 covering the second source electrode 15, the second drain electrode 16, the second insulating layer 13, a second anode 18 disposed on the fourth insulating layer 17, a second pixel defining layer 19 covering the second anode 18 and the fourth insulating layer 17, a second pixel defining groove 191 disposed on the second pixel defining layer 19 on the second anode 18, a second organic light emitting layer 20 disposed in the second pixel defining groove 191, a second organic light emitting layer 20 disposed on the second pixel defining groove 191, and a second light emitting layer 15 disposed on a side of the second insulating layer 13 away from the substrate, And a second cathode 21 provided on the second pixel layer 19 in contact with the second organic light emitting layer 20.
Specifically, the substrate 1 is a flexible substrate, and preferably, the material of the substrate is polyimide.
Specifically, the double-sided display device of the invention shares one grid electrode with the organic light emitting diode on the first surface and the driving thin film transistor of the organic light emitting diode on the second surface, and embeds the grid electrode into the substrate, so that the double-sided display device can be reduced in thickness while realizing double-sided display, and the portability of the double-sided display device is improved.
Example 2
A processing technology of an organic light emitting layer assembly of a double-sided display device comprises the following steps:
1) structure and separate processing
The organic light-emitting layer assembly comprises a hole transmission functional layer, a light-emitting layer and an electron transmission functional layer which are sequentially stacked;
the hole transport functional layer, the luminescent layer and the electron transport functional layer are prepared according to the prior art and are compounded according to the prior art;
2) and pretreatment
Spraying pretreatment liquid on the surface of the compounded organic light-emitting layer assembly, and drying by using a vacuum drier at the drying temperature of 35 ℃ after the spraying is finished;
the pretreatment liquid comprises the following components: 5 parts of sodium sulfate, 5.5 parts of titanium dioxide, 15 parts of isopropanol, 15 parts of epoxy acrylate and 0.5 part of soybean flavone;
the processing method of the pretreatment liquid comprises the following steps: sequentially adding the raw materials into a preparation kettle, heating to 55 ℃, and stirring and mixing for 1 hour to prepare the nano-composite material;
3) and subsequent treatment
Placing the pretreated organic light-emitting layer assembly in a closed container, vacuumizing and keeping for more than 5 hours, and then recovering to normal pressure and taking out; finally, the mixture is placed into a forced air drying oven to be dried for 1 hour at the temperature of 40 ℃.
The present invention is not limited to the above-described embodiments, which are merely exemplary and are intended to be illustrative of the present invention, and are not to be construed as limiting the present invention.
Claims (1)
1. The processing technology of the double-sided display device is characterized by comprising the processing technology of an organic light-emitting layer assembly, and comprises the following steps:
1) structure of the same
The organic light-emitting layer assembly comprises a hole transmission functional layer, a light-emitting layer and an electron transmission functional layer which are sequentially stacked;
2) and pretreatment
Spraying pretreatment liquid on the surface of the compounded organic light-emitting layer assembly, and drying by using a vacuum drier at the drying temperature of 35 ℃ after the spraying is finished;
the pretreatment liquid comprises the following components: 5 parts of sodium sulfate, 5.5 parts of titanium dioxide, 15 parts of isopropanol, 15 parts of epoxy acrylate and 0.5 part of soybean flavone;
the processing method of the pretreatment liquid comprises the following steps: sequentially adding the raw materials into a preparation kettle, heating to 55 ℃, and stirring and mixing for 1 hour to prepare the nano-composite material;
3) and subsequent treatment
Placing the pretreated organic light-emitting layer assembly in a closed container, vacuumizing and keeping for more than 5 hours, and then recovering to normal pressure and taking out; finally, placing the mixture into a blast drying oven to be dried for 1 hour at the temperature of 40 ℃;
the double-sided display device consists of a substrate and an organic light-emitting layer assembly;
a first through hole is formed in the substrate, and a grid is arranged in the first through hole;
the first insulating layer covers the first surface of the substrate, the first active layer is arranged on one side, far away from the substrate, of the first insulating layer, the first source electrode and the first drain electrode are arranged on one side, far away from the substrate, of the first insulating layer and are respectively contacted with two ends of the first active layer, the second insulating layer covers the first source electrode, the first drain electrode and the first insulating layer, the first anode is arranged on one side, far away from the substrate, of the second insulating layer, the first pixel defining layer covers the first anode and the second insulating layer, the first pixel defining groove is arranged on the first pixel defining layer on one side, far away from the substrate, of the first anode, the first organic light emitting layer is arranged in the first pixel defining groove, and the first cathode is arranged on one side, far away from the substrate, of the first pixel layer and is contacted with the first organic;
the third insulating layer covers the second surface of the substrate, the second active layer is arranged on one side of the third insulating layer far away from the substrate, the second source electrode and the second drain electrode are arranged on one side of the third insulating layer far away from the substrate and are respectively contacted with two ends of the second active layer, the fourth insulating layer covers the second source electrode, the second drain electrode and the second insulating layer, the second anode is arranged on the fourth insulating layer, the second pixel defining layer covers the second anode and the fourth insulating layer, the second pixel defining groove is arranged on the second pixel defining layer on the second anode, the second organic light-emitting layer is arranged in the second pixel defining groove, and the second cathode is arranged on the second pixel layer and is contacted with the second organic light-emitting layer;
according to the double-sided display device, the organic light emitting diode on the first surface and the driving thin film transistor of the organic light emitting diode on the second surface share one grid, and the grid is embedded into the substrate, so that double-sided display can be realized, the thickness of the double-sided display device can be reduced, and the portability of the double-sided display device can be improved.
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| CN201710839269.2A CN107749418B (en) | 2017-09-18 | 2017-09-18 | Processing technology of organic light-emitting layer assembly of double-sided display device |
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| CN201710839269.2A CN107749418B (en) | 2017-09-18 | 2017-09-18 | Processing technology of organic light-emitting layer assembly of double-sided display device |
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| CN107749418A CN107749418A (en) | 2018-03-02 |
| CN107749418B true CN107749418B (en) | 2020-11-03 |
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| WO2021120112A1 (en) * | 2019-12-19 | 2021-06-24 | 重庆康佳光电技术研究院有限公司 | Double-sided tft panel, fabrication method therefor, and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1815748A (en) * | 2005-12-22 | 2006-08-09 | 友达光电股份有限公司 | Double-side displaying apparatus |
| CN103730485A (en) * | 2013-12-27 | 2014-04-16 | 京东方科技集团股份有限公司 | Two-side displaying OLED array substrate, manufacturing method thereof, and display device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1815748A (en) * | 2005-12-22 | 2006-08-09 | 友达光电股份有限公司 | Double-side displaying apparatus |
| CN103730485A (en) * | 2013-12-27 | 2014-04-16 | 京东方科技集团股份有限公司 | Two-side displaying OLED array substrate, manufacturing method thereof, and display device |
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Effective date of registration: 20210119 Address after: 410000 No. 101, building B2, phase III, Changsha E center, south of Kangtian road and east of Xiangtai Road, Liuyang economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Changsha Huike Jinyang New display device Co.,Ltd. Address before: 230000 northeast corner of the intersection of Jiudingshan road and Kuihe Road, Xinzhan District, Hefei City, Anhui Province Patentee before: HEFEI HUIKE JINYANG TECHNOLOGY Co.,Ltd. |
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Address after: 410000 No. 101, building B2, phase III, Changsha E center, south of Kangtian road and east of Xiangtai Road, Liuyang economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Changsha Huike Jinyang Technology Co.,Ltd. Address before: 410000 No. 101, building B2, phase III, Changsha E center, south of Kangtian road and east of Xiangtai Road, Liuyang economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: Changsha Huike Jinyang New display device Co.,Ltd. |