CN109659344B - Flexible OLED device - Google Patents
Flexible OLED device Download PDFInfo
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- CN109659344B CN109659344B CN201811544610.2A CN201811544610A CN109659344B CN 109659344 B CN109659344 B CN 109659344B CN 201811544610 A CN201811544610 A CN 201811544610A CN 109659344 B CN109659344 B CN 109659344B
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- impact
- layer
- cover plate
- oled device
- flexible oled
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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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The invention provides a flexible OLED device. The flexible OLED device comprises an OLED panel and a cover plate arranged on the OLED panel; a plurality of first impact-resistant structures are arranged in the cover plate; the first impact-resistant structure can not only not destroy the original function of the film layer, but also effectively decompose the impact force received by the flexible OLED device, avoid the damage to the product caused by stress concentration, and improve the impact resistance of the flexible OLED device.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible OLED device.
Background
An Organic Light Emitting diode Display (OLED) has many advantages of self-luminescence, low driving voltage, high luminous efficiency, short response time, high definition and contrast, a viewing angle of nearly 180 °, a wide temperature range, flexible Display, large-area full color Display, and the like, and is considered as a Display device with the most potential for development.
OLED devices typically include: the light-emitting diode comprises a substrate, an anode arranged on the substrate, a hole injection layer arranged on the anode, a hole transport layer arranged on the hole injection layer, a light-emitting material layer arranged on the hole transport layer, an electron transport layer arranged on the light-emitting material layer, an electron injection layer arranged on the electron transport layer and a cathode arranged on the electron injection layer. The light emitting principle of the OLED device is that a semiconductor material and an organic light emitting material emit light under the drive of an electric field through carrier injection and recombination. Specifically, an Indium Tin Oxide (ITO) electrode and a metal electrode are generally used as an anode and a cathode of the device, respectively, and under a certain voltage, electrons and holes are injected into an electron transport layer and a hole transport layer from the cathode and the anode, respectively, and the electrons and the holes migrate to a light emitting material layer through the electron transport layer and the hole transport layer, respectively, and meet in the light emitting material layer to form excitons and excite light emitting molecules, which emit visible light through radiative relaxation.
OLEDs can be classified into two broad categories, namely, direct addressing and thin film transistor Matrix addressing, namely, Passive Matrix OLEDs (PMOLEDs) and Active Matrix OLEDs (AMOLEDs) according to driving methods. The AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a large-sized display device with high definition.
With the maturation of flexible OLED panel technology, flexible panel OLEDs have become available in mass production and provide a reliable basis for the production of folded screens. In the process of manufacturing the foldable OLED panel module, in order to make the product light and thin and convenient to bend, the thicknesses of various films are thinned as much as possible, but the impact resistance of the product is reduced due to the thinning of the films, and the product is easy to damage.
Disclosure of Invention
The invention aims to provide a flexible OLED device, which can avoid damage to a product caused by stress concentration and improve the shock resistance of the flexible OLED device.
To achieve the above object, the present invention provides a flexible OLED device including: the OLED panel and the cover plate are arranged on the OLED panel;
a plurality of first impact-resistant structures are arranged in the cover plate;
the first impact-resistant structure is used for decomposing impact force to which the flexible OLED device is subjected.
The flexible OLED device further comprises a cover plate bonding layer arranged between the OLED panel and the cover plate; and a plurality of second anti-impact structures are arranged in the cover plate bonding layer.
The flexible OLED device also comprises an upper protection layer arranged between the OLED panel and the cover plate bonding layer and an upper protection layer bonding layer arranged between the upper protection layer and the OLED panel; and a plurality of third impact-resistant structures are arranged in the upper protective layer bonding layer.
The flexible OLED device further comprises a lower protection layer arranged below the OLED panel and a lower protection layer bonding layer arranged between the lower protection layer and the OLED panel; and a plurality of fourth impact-resistant structures are arranged in the lower protective layer bonding layer.
The cover plate bonding layer, the upper protection layer bonding layer and the lower protection layer bonding layer are all made of optical glue.
The first impact-resistant structure, the second impact-resistant structure, the third impact-resistant structure and the fourth impact-resistant structure are all wavy in shape; the first impact-resistant structure, the second impact-resistant structure, the third impact-resistant structure and the fourth impact-resistant structure are all carbon fiber structures.
The cross section of the carbon fiber structure is wavy.
The forming method of the cover plate bonding layer, the upper protection layer bonding layer and the lower protection layer bonding layer comprises the following steps: and providing a forming die, wherein the forming die is provided with a forming groove, a plurality of carbon fiber structures are placed in the forming groove, an optical adhesive material is coated in the forming groove through a coating nozzle so as to cover the plurality of carbon fiber structures, and a cover plate bonding layer, an upper protection layer bonding layer and a lower protection layer bonding layer are formed.
The forming method of the cover plate comprises the following steps: providing a forming die, wherein the forming die is provided with a forming groove, a plurality of carbon fiber structures are placed in the forming groove, and a cover plate material is coated in the forming groove through a coating nozzle to cover the plurality of carbon fiber structures to form the cover plate.
The carbon fiber structures are arranged in parallel or in a crossed manner in the forming groove.
The invention has the beneficial effects that: the flexible OLED device comprises an OLED panel and a cover plate arranged on the OLED panel; a plurality of first impact-resistant structures are arranged in the cover plate; the first impact-resistant structure can not only not destroy the original function of the film layer, but also effectively decompose the impact force received by the flexible OLED device, avoid the damage to the product caused by stress concentration, and improve the impact resistance of the flexible OLED device.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic structural diagram of a flexible OLED device according to the present invention;
FIGS. 2 and 3 are schematic diagrams of the arrangement of carbon fiber structures in the forming grooves of the flexible OLED device of the present invention;
fig. 4 is a schematic view at a-a of fig. 2.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a flexible OLED device, including: the OLED panel comprises an OLED panel 10 and a cover plate 20 arranged on the OLED panel 10;
a plurality of first impact-resistant structures 21 are arranged in the cover plate 20;
the first impact-resistant structure 21 serves to break up the impact force to which the flexible OLED means is subjected.
Specifically, the flexible OLED device further includes a cover plate bonding layer 30 disposed between the OLED panel 10 and the cover plate 20; a plurality of second impact resistant structures 31 are disposed in the cover plate adhesive layer 30.
Further, the flexible OLED device further includes an upper protection layer 40 disposed between the OLED panel 10 and the cover plate bonding layer 30, and an upper protection layer bonding layer 50 disposed between the upper protection layer 40 and the OLED panel 10; a plurality of third impact resistant structures 51 are provided in the upper protective layer adhesive layer 50.
Further, the flexible OLED device further includes a lower protection layer 60 disposed below the OLED panel 10, and a lower protection layer adhesive layer 70 disposed between the lower protection layer 60 and the OLED panel 10; a plurality of fourth impact resistant structures 71 are disposed in the lower protective layer bonding layer 70.
Further, the flexible OLED device further includes a polarizer 80 disposed between the upper protection layer 40 and the cover plate bonding layer 30.
Specifically, the cover plate Adhesive layer 30, the upper protective layer Adhesive layer 50, and the lower protective layer Adhesive layer 70 are all made of Optical Clear Adhesive (OCA).
Specifically, the shapes of the first impact-resistant structure 21, the second impact-resistant structure 31, the third impact-resistant structure 51 and the fourth impact-resistant structure 71 may be saw-toothed, wavy or pulse, and the shape of the impact-resistant structure of the present invention is preferably wavy in order to ensure the capability of the impact-resistant structure to decompose the impact force.
The first impact-resistant structure 21, the second impact-resistant structure 31, the third impact-resistant structure 51 and the fourth impact-resistant structure 71 are all carbon fiber structures.
Further, similarly, the cross section of the carbon fiber structure may be in a zigzag shape, a wavy shape or a pulse shape, and in order to ensure the capability of the carbon fiber structure to decompose the impact force, the cross section of the carbon fiber structure of the present invention is preferably in a wavy shape.
Specifically, the OLED panel 10 includes a flexible substrate 11, a TFT layer 12 disposed on the flexible substrate 11, an OLED device 13 disposed on the TFT layer 12, and a thin film encapsulation layer 14 covering the OLED device 13.
Further, the OLED panel 10 further includes a COF (chip on film) 15 connected to the TFT layer 12 and located outside the thin film encapsulation layer 14, and a PCB (printed circuit board) 16 connected to the COF 15.
Specifically, the COF15 is connected to the TFT layer 12 through an Anisotropic Conductive Film (ACF) 17.
Specifically, as shown in fig. 2 and 4, the cover plate bonding layer 30, the upper protective layer bonding layer 50, and the lower protective layer bonding layer 70 according to the present invention are formed by: providing a forming mold 100, wherein the forming mold 100 has a forming groove 101, placing a plurality of carbon fiber structures in the forming groove 101, coating an optical adhesive material in the forming groove 101 through a coating nozzle 102 to cover the plurality of carbon fiber structures, and forming a cover plate bonding layer 30, an upper protective layer bonding layer 50 and a lower protective layer bonding layer 70.
Similarly, the method for forming the cover plate 20 of the present invention comprises: providing a forming die 100, wherein the forming die 100 is provided with a forming groove 101, placing a plurality of carbon fiber structures in the forming groove 101, and coating a cover plate material in the forming groove 101 through a coating nozzle 102 to cover the plurality of carbon fiber structures to form the cover plate 20.
Specifically, the top view of the carbon fiber structure is in a strip shape.
Specifically, as shown in fig. 2 and 3, a plurality of carbon fiber structures are arranged in parallel or in a cross arrangement in the forming groove 101.
It should be noted that, in the invention, the carbon fiber structures are added to the cover plate 20, the cover plate bonding layer 30, the upper protection layer bonding layer 50 and the lower protection layer bonding layer 70 to serve as impact-resistant structures, and the carbon fiber structures not only do not destroy the original functions of the film layer, but also can effectively decompose the impact force applied to the flexible OLED device, thereby avoiding the damage to the product caused by stress concentration and improving the impact resistance of the flexible OLED device.
In summary, the flexible OLED device of the present invention includes an OLED panel and a cover plate disposed on the OLED panel; a plurality of first impact-resistant structures are arranged in the cover plate; the first impact-resistant structure can not only not destroy the original function of the film layer, but also effectively decompose the impact force received by the flexible OLED device, avoid the damage to the product caused by stress concentration, and improve the impact resistance of the flexible OLED device.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (9)
1. A flexible OLED device, comprising: the OLED panel (10) and a cover plate (20) arranged on the OLED panel (10);
a plurality of first impact-resistant structures (21) are arranged in the cover plate (20);
the first impact-resistant structure (21) is used for decomposing impact force applied to the flexible OLED device;
the first impact-resistant structure (21) is in the shape of a strip;
further comprising a cover plate bonding layer (30) arranged between the OLED panel (10) and the cover plate (20); and a plurality of second anti-impact structures (31) are arranged in the cover plate bonding layer (30).
2. The flexible OLED device of claim 1, further comprising an upper protective layer (40) disposed between the OLED panel (10) and the cover sheet adhesive layer (30) and an upper protective layer adhesive layer (50) disposed between the upper protective layer (40) and the OLED panel (10); a plurality of third impact-resistant structures (51) are arranged in the upper protective layer bonding layer (50).
3. The flexible OLED device of claim 2, further comprising a lower protective layer (60) disposed below the OLED panel (10) and a lower protective layer adhesive layer (70) disposed between the lower protective layer (60) and the OLED panel (10); and a plurality of fourth impact-resistant structures (71) are arranged in the lower protective layer bonding layer (70).
4. The flexible OLED device of claim 3, wherein the cover plate adhesive layer (30), the upper protective layer adhesive layer (50), and the lower protective layer adhesive layer (70) are all made of optical glue.
5. The flexible OLED device according to claim 4, characterized in that the first impact-resistant structure (21), the second impact-resistant structure (31), the third impact-resistant structure (51) and the fourth impact-resistant structure (71) are all wave-shaped; the first impact-resistant structure (21), the second impact-resistant structure (31), the third impact-resistant structure (51) and the fourth impact-resistant structure (71) are all carbon fiber structures.
6. The flexible OLED device of claim 5, wherein the carbon fiber structure has a wave-like cross-sectional shape.
7. The flexible OLED device of claim 5, wherein the cover plate adhesive layer (30), the upper protective layer adhesive layer (50), and the lower protective layer adhesive layer (70) are formed by: providing a forming die (100), wherein the forming die (100) is provided with a forming groove (101), placing a plurality of carbon fiber structures in the forming groove (101), coating an optical adhesive material in the forming groove (101) through a coating nozzle (102) to cover the plurality of carbon fiber structures, and forming a cover plate bonding layer (30), an upper protection layer bonding layer (50) and a lower protection layer bonding layer (70).
8. The flexible OLED device of claim 5, wherein the cover sheet (20) is formed by: providing a forming die (100), wherein the forming die (100) is provided with a forming groove (101), placing a plurality of carbon fiber structures in the forming groove (101), and coating a cover plate material in the forming groove (101) through a coating nozzle (102) to cover the plurality of carbon fiber structures to form a cover plate (20).
9. The flexible OLED device of claim 7 or 8, characterized in that the plurality of carbon fiber structures are arranged in parallel or in a cross arrangement in the shaped groove (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544610.2A CN109659344B (en) | 2018-12-17 | 2018-12-17 | Flexible OLED device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544610.2A CN109659344B (en) | 2018-12-17 | 2018-12-17 | Flexible OLED device |
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| CN109659344A CN109659344A (en) | 2019-04-19 |
| CN109659344B true CN109659344B (en) | 2021-04-02 |
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| CN201811544610.2A Active CN109659344B (en) | 2018-12-17 | 2018-12-17 | Flexible OLED device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428738B (en) * | 2019-07-31 | 2022-01-14 | 武汉天马微电子有限公司 | Display module and display device |
| CN110518144B (en) * | 2019-08-20 | 2021-10-15 | 武汉天马微电子有限公司 | Flexible packaging cover plate, manufacturing method thereof, flexible display panel and display device |
| CN110635014B (en) * | 2019-09-25 | 2022-01-25 | 昆山工研院新型平板显示技术中心有限公司 | Flexible cover plate and display panel |
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| KR20160081704A (en) * | 2014-12-31 | 2016-07-08 | 엘지디스플레이 주식회사 | Flexible organic light emitting display device |
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| KR20160081704A (en) * | 2014-12-31 | 2016-07-08 | 엘지디스플레이 주식회사 | Flexible organic light emitting display device |
| CN106448481A (en) * | 2016-10-21 | 2017-02-22 | 昆山国显光电有限公司 | Display device and manufacturing method thereof |
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