WO2018040237A1 - 双面oled显示装置 - Google Patents

双面oled显示装置 Download PDF

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Publication number
WO2018040237A1
WO2018040237A1 PCT/CN2016/101954 CN2016101954W WO2018040237A1 WO 2018040237 A1 WO2018040237 A1 WO 2018040237A1 CN 2016101954 W CN2016101954 W CN 2016101954W WO 2018040237 A1 WO2018040237 A1 WO 2018040237A1
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WO
WIPO (PCT)
Prior art keywords
display element
substrate
encapsulation layer
light emitting
peripheral edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/101954
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English (en)
French (fr)
Inventor
孙海雁
唐岳军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US15/321,742 priority Critical patent/US20180212013A1/en
Publication of WO2018040237A1 publication Critical patent/WO2018040237A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/824—Cathodes combined with auxiliary electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants

Definitions

  • the present invention relates to a double-sided OLED display device, and more particularly to a double-sided OLED display device having a simple package structure and preventing moisture intrusion.
  • the double-sided OLED display device encapsulates two display surfaces by using a package film in a package structure.
  • a package structure is complicated, which is disadvantageous for productivity improvement.
  • the double-sided OLED display device is mostly used for environment change. In a relatively bad place, such as an outdoor display card, a billboard, etc., the inside of the double-sided OLED display device is easily invaded by moisture, and the internal electronic components and the like are destroyed, resulting in a decrease in the life thereof.
  • the object of the present invention is to provide a double-sided OLED display device which has a simple package structure and can prevent moisture intrusion; and solves the technical problem that the package structure of the conventional double-sided OLED display device is complicated and the waterproof steam intrusion effect is poor.
  • Embodiments of the present invention provide a double-sided OLED display device including: a first display element, a second display element, a first encapsulation layer, and a second encapsulation layer, wherein the first display element is disposed on the second display element Above and opposite directions of light emission, the first encapsulation layer is disposed above the first display element, and the second encapsulation layer is disposed under the second display element;
  • the first display element and the second display element as a whole are integrally closed by the first encapsulation layer and the second encapsulation layer, and the first encapsulation layer and the second encapsulation layer are sealed Closed and fixed;
  • the sealing portion is a sealant frame or a sealant layer
  • the first light emitting portion and the second light emitting portion each include a light emitting layer, an anode, an organic functional layer, and a cathode;
  • the light emitting layer is disposed between the anode and the organic functional layer, and the organic functional layer is disposed between the light emitting layer and the cathode.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • the first display element includes a first substrate and a first light emitting portion formed on the first substrate, the second display element including a second substrate and a second light emitting portion formed on the second substrate;
  • the bottom of the first substrate and the bottom of the second substrate are fixedly connected by a glue layer, and the peripheral edge portion of the first encapsulation layer and the peripheral edge portion of the second encapsulation layer are closed by the sealing portion. fixed.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • the first display element includes a first substrate and a first light emitting portion formed on the first substrate, the second display element including a second substrate and a second light emitting portion formed on the second substrate;
  • peripheral edge portion of the first substrate and the peripheral edge portion of the second substrate may extend into the sealing portion in whole or in part and the first substrate and the second substrate are passed through the sealing portion a fixed connection; a peripheral edge portion of the first encapsulation layer and a peripheral edge portion of the second encapsulation layer are closed and fixed by the sealing portion.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • the first display element and the second display element share a substrate, the first display element further includes a first light emitting portion formed on the substrate, and the second display element further includes a a second light emitting portion above the substrate;
  • the first light emitting portion is disposed on an upper surface of the substrate, the second light emitting portion is disposed on a lower surface of the substrate; and a peripheral edge portion of the first encapsulation layer and a periphery of the second encapsulation layer The edge portion is closed and fixed by the sealing portion.
  • the substrate protrudes into the sealing portion.
  • the first display element is a bottom emission type display element and the second display element is a top emission type display element
  • the first display element and the The second display element is disposed in the same direction
  • the first display element includes a first substrate and a first light emitting portion formed on the first substrate, the second display element including a second substrate and a second light emitting portion formed on the second substrate;
  • the first encapsulation layer is the first substrate, and a peripheral edge portion of the second substrate protrudes into the sealing portion and is fixedly connected to the first substrate through the sealing portion, the first A peripheral edge portion of the substrate and a peripheral edge portion of the second encapsulation layer are closed and fixed by the sealing portion.
  • the first display element and the second display element are both bottom emission type display elements, the first display element and the second display element pair To set
  • the first display element includes a first substrate and a first light emitting portion formed on the first substrate, the second display element including a second substrate and a second light emitting portion formed on the second substrate;
  • the first encapsulation layer is the first substrate, and the second encapsulation layer is a second substrate; a peripheral edge portion of the first substrate and a peripheral edge portion of the second substrate pass through the sealing portion Closed and fixed.
  • the outer surfaces of the first light-emitting portion and the second light-emitting portion are completely covered with a thin film encapsulation layer.
  • Embodiments of the present invention provide a double-sided OLED display device including: a first display element, a second display element, a first encapsulation layer, and a second encapsulation layer, wherein the first display element is disposed on the second display element Above and opposite directions of light emission, the first encapsulation layer is disposed above the first display element, and the second encapsulation layer is disposed under the second display element;
  • the first display element comprises a first substrate and a first light emitting portion formed on the first substrate, the second display element comprising a second substrate and a second light emitting formed on the second substrate unit;
  • the first substrate and the second substrate are fixedly connected, and the first display element and the second display element are integrally packaged as a whole through the first encapsulation layer and the second encapsulation layer, and the The first encapsulation layer and the second encapsulation layer are closed and fixed by a sealing portion.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • the bottom of the first substrate and the bottom of the second substrate are fixedly connected by a glue layer, and the peripheral edge portion of the first encapsulation layer and the peripheral edge portion of the second encapsulation layer are closed by the sealing portion. fixed.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • peripheral edge portion of the first substrate and the peripheral edge portion of the second substrate may extend into the sealing portion in whole or in part and the first substrate and the second substrate are passed through the sealing portion a fixed connection; a peripheral edge portion of the first encapsulation layer and a peripheral edge portion of the second encapsulation layer are closed and fixed by the sealing portion.
  • the first display element and the second display element are both top emission type display elements, the first display element and the second display element are back To set
  • the first substrate and the second substrate are integrally formed to form a substrate, that is, the first light emitting portion is disposed on an upper surface of the substrate, and the second light emitting portion is disposed on a lower surface of the substrate; And the peripheral edge portion of the first encapsulation layer and the peripheral edge portion of the second encapsulation layer are closed and fixed by the sealing portion.
  • the substrate protrudes into the sealing portion.
  • the first display element is a bottom emission type display element and the second display element is a top emission type display element
  • the first display element and the The second display element is disposed in the same direction
  • the first encapsulation layer is the first substrate, and a peripheral edge portion of the second substrate protrudes into the sealing portion and is fixedly connected to the first substrate through the sealing portion, the first A peripheral edge portion of the substrate and a peripheral edge portion of the second encapsulation layer are closed and fixed by the sealing portion.
  • the first display element and the second display element are both bottom emission type display elements, the first display element and the second display element pair To set
  • the first encapsulation layer is the first substrate, and the second encapsulation layer is a second substrate; a peripheral edge portion of the first substrate and a peripheral edge portion of the second substrate pass through the sealing portion Closed and fixed.
  • the outer surfaces of the first light-emitting portion and the second light-emitting portion are completely covered with a thin film encapsulation layer.
  • the sealing portion is a sealant frame or a sealant layer.
  • the first light-emitting portion and the second light-emitting portion each include a light-emitting layer, an anode, an organic functional layer, and a cathode;
  • the light emitting layer is disposed between the anode and the organic functional layer, and the organic functional layer is disposed between the light emitting layer and the cathode.
  • the double-sided OLED display device of the present invention integrally encapsulates the OLED display device through the arrangement of the first package layer and the second package layer, so that the package structure of the present invention is simple;
  • the double-sided OLED display device of the present invention further enhances the airtightness of the package structure when the package layer is packaged by the sealing portion, thereby improving the waterproof gas intrusion performance of the present invention, thereby improving the present invention.
  • the service life of the existing double-sided OLED display device is complicated, and the technical problem of poor water vapor intrusion performance is solved.
  • FIG. 1 is a schematic structural view of a first preferred embodiment of a double-sided OLED display device of the present invention
  • FIG. 2 is a schematic structural view of a second preferred embodiment of a double-sided OLED display device of the present invention.
  • FIG. 3 is a schematic structural view of a third preferred embodiment of a double-sided OLED display device of the present invention.
  • FIG. 4 is a schematic structural view of a fourth preferred embodiment of the double-sided OLED display device of the present invention.
  • FIG. 5 is a schematic structural view of a fifth preferred embodiment of the double-sided OLED display device of the present invention.
  • FIG. 6 is a schematic structural view of a sixth preferred embodiment of the double-sided OLED display device of the present invention.
  • FIG. 7 is a schematic structural view of a seventh preferred embodiment of the double-sided OLED display device of the present invention.
  • Figure 8 is a schematic view showing the structure of an eighth preferred embodiment of the double-sided OLED display device of the present invention.
  • FIG. 1 is a schematic structural view of a first preferred embodiment of a double-sided OLED display device according to the present invention.
  • the double-sided OLED display device 10 includes a first display element 11, a second display element 12, a first encapsulation layer 13, and a second encapsulation layer 14.
  • the first display element 11 is disposed above the second display element 12 and the light emitting directions of the two are opposite, the first encapsulation layer 13 is disposed above the first display element 11, and the second encapsulation layer 14 is disposed on the second display element 12.
  • the first display element 11 includes a first substrate 111 and a first light emitting portion 112 formed on the first substrate 111.
  • the second display element 12 includes a second substrate 121 and a second formed on the second substrate 121. Light emitting portion 122.
  • the first display element 11 and the second display element 12 are both top emission type display elements, and the first display element 11 and the second display element 12 are disposed facing away from each other;
  • the bottom of the first substrate 111 and the bottom of the second substrate 121 are fixedly connected by the adhesive layer 16 , and the first display element 11 and the second display element 12 as a whole are integrally closed and packaged by the first encapsulation layer 13 and the second encapsulation layer 14 . And the peripheral edge portion of the first encapsulation layer 13 and the peripheral edge portion of the second encapsulation layer 14 are closed and fixed by the sealing portion 15.
  • the first light emitting portion 112 and the second light emitting portion 122 each include a light emitting layer, an anode, a first organic functional layer and a cathode; the light emitting layer is disposed between the anode and the first organic functional layer, and the first organic functional layer is disposed in the light emitting Between the layer and the cathode, and the cathode is connected to the auxiliary electrode.
  • the first organic functional layer may include at least one of a hole blocking layer, an electron transport layer, and an electron injection layer.
  • first light emitting portion 112 and the second light emitting portion 122 may further include a second organic functional layer disposed between the light emitting layer and the anode, and the second organic functional layer may include a hole injection layer, a hole transport layer, and an electron At least one of the barrier layers.
  • the double-sided OLED display device is mostly used for outdoor use, so often encounters bad weather, such as heavy rain and the like, so that the foreign object easily touches the double-sided OLED display device, so in order to increase the preferred embodiment
  • the strength of the package structure, the first encapsulation layer 13 and the second encapsulation layer 14 are each preferably a structurally strong outer cover, and in order to further strengthen the strength of the package structure of the preferred embodiment, the sealing portion 15 may preferably be an encapsulant Layer or sealant frame, etc.;
  • the operation in the overall package may be: first placing the package face of the first package layer 13 upward, and then passing the first substrate 111 of the first display element 11 and the bottom plate of the second substrate 121 of the second display element 12 through the glue layer. 16 is attached and placed on the first encapsulation layer 13. An encapsulant layer is then applied over the first encapsulation layer 13. Finally, the second encapsulation layer 14 is overlaid on the first display element 11 and the second display element 12 to cure the encapsulation layer, that is, the corresponding overall encapsulation operation is completed.
  • the preferred embodiment integrally encapsulates the first display element 11 and the second display element 12 by the arrangement of the first encapsulation layer 13 and the second encapsulation layer 14, so that the preferred embodiment
  • the package structure is simple; in addition, the preferred embodiment is provided with the sealing portion 15 so that when the first encapsulation layer 13 and the second encapsulation layer 14 are packaged, the sealing structure is further enhanced, thereby improving the preferred implementation.
  • the performance of the waterproof vapor intrusion of the example further increases the service life of the preferred embodiment.
  • FIG. 2 is a schematic structural view of a second preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 20 includes a first display element 21, a second display element 22, a first encapsulation layer 23, and a second encapsulation layer 24.
  • the first display element 21 is disposed above the second display element 22 and the light emitting directions of the two are opposite, the first encapsulation layer 23 is disposed above the first display element 21, and the second encapsulation layer 24 is disposed on the second display element 22.
  • the first display element 21 includes a first substrate 211 and a first light emitting portion 212 formed on the first substrate 211.
  • the second display element 22 includes a second substrate 221 and a second formed on the second substrate 221. Light emitting portion 222.
  • first display element 21 and the second display element 22 are both top emission type display elements, the first display element 21 and the second display element 22 are disposed facing away from each other;
  • the peripheral edge portions of the first substrate 211 and the second substrate 221 all extend into the sealing portion 25 and the first substrate 211 and the second substrate 221 are fixedly connected by the sealing portion 25, such a structure simultaneously fixing the first display element 21 and The second display element 22, and the connection of the first display element 21 and the second display element 22 to the respective encapsulation layers.
  • the first display element 21 and the second display element 22 as a whole are integrally packaged by the first encapsulation layer 23 and the second encapsulation layer 24 and the peripheral edge portions of the first encapsulation layer 23 and the peripheral edge portions of the second encapsulation layer 24 It is closed and fixed by the sealing portion 25.
  • the first encapsulating layer 23 and the second encapsulating layer 24 are each preferably a structurally strong outer cover, and in order to further strengthen the strength of the packaging structure of the preferred embodiment, the sealing portion 25 may preferably be an encapsulating layer or a sealant frame. .
  • the advantageous effect of the preferred embodiment is that the preferred embodiment achieves the first display element 21 by simultaneously extending the first substrate 211 and the second substrate 221 into the sealing portion 25 as compared with the first preferred embodiment. And the second display element 22, and the connection of the first display element 21 and the second display element 22 to the respective package layers, while the OLED device layers in the first display element 21 and the second display element 22 are respectively associated with the first.
  • the cutting edge and the trace width between the substrate 211 and the second substrate 221 are located inside the sealing portion 25, and the sealing portion 25 completely closes both display surfaces, which helps to reduce the width of the display front edge and enhance the narrow frame.
  • FIG. 3 is a schematic structural view of a third preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 30 includes a first display element 31, a second display element 32, a first encapsulation layer 33, and a second encapsulation layer 34.
  • the first display element 31 is disposed above the second display element 32 and the light emitting directions of the two are opposite, the first encapsulation layer 33 is disposed above the first display element 31, and the second encapsulation layer 34 is disposed on the second display element 32.
  • the first display element 31 includes a first substrate 311 and a first light emitting portion 312 formed on the first substrate 311.
  • the second display element 32 includes a second substrate 321 and a second formed on the second substrate 321 Light emitting portion 322.
  • first display element 31 and the second display element 32 are both top emission type display elements, the first display element 31 and the second display element 32 are disposed facing away from each other;
  • the first display element 31 and the second display element 32 as a whole are integrally packaged by the first encapsulation layer 33 and the second encapsulation layer 34 and the peripheral edge portions of the first encapsulation layer 33 and the peripheral edge portions of the second encapsulation layer 34 It is closed and fixed by the sealing portion 35.
  • the peripheral edge portion of the first substrate 311 and the peripheral edge portion of the second substrate 321 of the preferred embodiment only partially protrude into the sealing portion 35, such as the left and right sides of the first substrate 311.
  • the edge portion of the side protrudes into the sealing portion 35, and the edge portions of the front and rear sides of the second substrate 321 protrude into the sealing portion 35, that is, the extending direction of the edge portion of the first substrate 311 and the second substrate 321
  • the extending portion of the edge portion extends perpendicularly.
  • the first encapsulation layer 33 and the second encapsulation layer 34 are each preferably a structurally strong outer cover, and in order to further strengthen the strength of the package structure of the preferred embodiment, the sealing portion 35 may preferably be an encapsulant layer or a sealant frame. .
  • the advantageous effect of the preferred embodiment is that the preferred embodiment of the present invention has only partially protruded into the sealing portion 35 by the peripheral edge portion of the first substrate 311 and the peripheral edge portion of the second substrate 321 as compared with the second preferred embodiment. And the two are in a complementary state, so that the preferred embodiment can save the materials of the first substrate 311 and the second substrate 321 in the case where the first substrate 311 and the second substrate 321 can be stably fixed, thereby reducing the cost.
  • FIG. 4 is a schematic structural view of a fourth preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 40 includes a first display element 41, a second display element 42, a first encapsulation layer 43, and a second encapsulation layer 44.
  • the first display element 41 is disposed above the second display element 42 and the light emitting directions of the two are opposite.
  • the first encapsulation layer 43 is disposed above the first display element 41, and the second encapsulation layer 44 is disposed on the second display element 42.
  • the first display element 41 includes a first substrate 411 and a first light emitting portion 412 formed on the first substrate 411.
  • the second display element 42 includes a second substrate 421 and a second formed on the second substrate 421. Light emitting portion 422.
  • first display element 41 and the second display element 42 are both top emission type display elements, the first display element 41 and the second display element 42 are disposed facing away from each other;
  • the first display element 41 and the second display element 42 as a whole are integrally packaged by the first encapsulation layer 43 and the second encapsulation layer 44 and the peripheral edge portion of the first encapsulation layer 43 and the peripheral edge portion of the second encapsulation layer 44 It is closed and fixed by the sealing portion 45.
  • the first substrate 411 and the second substrate 421 of the preferred embodiment are integrally formed to form the substrate 46, that is, the first display element 41 and the second display element 42 share the substrate 46, so that the first illumination
  • the portion 412 is located on the upper surface of the substrate 46
  • the second light emitting portion 422 is located on the lower surface of the substrate 46.
  • the first encapsulation layer 43 and the second encapsulation layer 44 are each preferably a structurally strong outer cover, and in order to further strengthen the strength of the package structure of the preferred embodiment, the sealing portion 45 may preferably be an encapsulant layer or a sealant frame. ;
  • the preferred embodiment has the beneficial effects that the first substrate 411 and the first substrate 421 are integrated with each other such that the first display element 41 and the second display element 42 share a substrate, compared to the first preferred embodiment. 46, which makes the integrity between the first display element 41 and the second display element 41 in the preferred embodiment stronger, while also simplifying the package structure.
  • FIG. 5 is a schematic structural view of a fifth preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 50 includes a first display element 51, a second display element 52, a first encapsulation layer 53, and a second encapsulation layer 54.
  • the preferred embodiment projects the peripheral edge portion of the integrated substrate 56 into the sealing portion 55 on the basis of the fourth preferred embodiment.
  • the advantageous effect of the preferred embodiment is that the peripheral portion of the substrate 56 extends into the sealing portion 55 compared to the fourth preferred embodiment, such a structure simultaneously fixing the first display element 51 and the second display element 52, and the attachment of the first display element 51 and the second display element 52 to the respective encapsulation layers, such that the integrity of the first display element 51 and the second display element 52 is more robust, thereby enhancing the strength of the preferred embodiment.
  • FIG. 6 is a schematic structural view of a sixth preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 60 includes a first display element 61, a second display element 62, and a second encapsulation layer 63.
  • the first display element 61 is disposed above the second display element 62 and the light emitting directions of the two are opposite.
  • the first display element 61 includes a first substrate 611 and a first light emitting portion 612 formed on the first substrate 611, and a second
  • the display element 62 includes a second substrate 621 and a second light emitting portion 622 formed over the second substrate 621.
  • the first display element 61 is a bottom emission type display element, and when the second display element 62 is a top emission type display element, the first display element 61 and the second display element 62 are disposed in the same direction;
  • the first substrate 611 is located at the upper end of the first display element 61, and the second encapsulation layer 63 is disposed under the second display element 62.
  • the peripheral edge portion of the second substrate 621 extends into the sealing portion 64. And being fixedly connected to the first substrate 611 through the sealing portion 64;
  • the first display element 61 and the second display element 62 as a whole are integrally packaged by the first substrate 611 and the second encapsulation layer 63, and the peripheral edge portions of the first substrate 611 and the peripheral edge portions of the second encapsulation layer 63 are sealed.
  • the portion 64 is closed and fixed.
  • the second encapsulating layer 63 is preferably a structurally strong outer cover, and in order to further strengthen the strength of the packaging structure of the preferred embodiment, the sealing portion 64 may preferably be an encapsulating layer or a sealant frame or the like;
  • the advantageous effect of the preferred embodiment is that the preferred embodiment saves the material of one encapsulation layer by using the first substrate 611 as the arrangement of the first encapsulation layer, thereby reducing the cost of the preferred embodiment.
  • FIG. 7 is a schematic structural view of a sixth preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 70 includes a first display element 71 and a second display element 72.
  • the first display element 71 is disposed above the second display element 72 and the light emitting directions of the two are opposite.
  • the first display element 71 includes a first substrate 711 and a first light emitting portion 712 formed on the first substrate 711, and a second
  • the display element 72 includes a second substrate 722 and a second light emitting portion 721 formed over the second substrate 722.
  • first display element 71 and the second display element 72 are both bottom emission type display elements, the first display element 71 and the second display element 72 are oppositely disposed;
  • the first substrate 711 is located at the upper end of the first display element 71, and the second substrate 722 is located at the lower end of the second display element 72.
  • the first display element 71 and the second display element 72 as a whole are integrally packaged by the first substrate 711 and the second substrate 722, and the peripheral edge portion of the first substrate 711 and the peripheral edge portion of the second substrate 722 pass through the sealing portion 73. Closed and fixed.
  • the sealing portion 73 may preferably be an encapsulant layer or a sealant frame or the like;
  • the beneficial effects of the preferred embodiment are that, compared with the sixth preferred embodiment, the preferred embodiment further reduces the material of the encapsulation layer by using both the first substrate 711 and the second substrate 722 as the encapsulation layer, thereby reducing the present The cost of the preferred embodiment.
  • FIG. 8 is a schematic structural view of an eighth preferred embodiment of the double-sided OLED display device of the present invention.
  • the double-sided OLED display device 80 includes a first display element 81, a second display element 82, a first encapsulation layer 83, and a second encapsulation layer 84.
  • the first display element 81 is disposed above the second display element 82 and the light emitting directions of the two are opposite, the first encapsulation layer 83 is disposed above the first display element 81, and the second encapsulation layer 84 is disposed on the second display element 82.
  • the first display element 81 includes a first substrate 811 and a first light emitting portion 812 formed on the first substrate 811, and the second display element 82 includes a second substrate 821 and a second formed on the second substrate 821 Light emitting portion 822.
  • first display element 81 and the second display element 82 are both top emission type display elements, the first display element 81 and the second display element 82 are disposed facing away from each other;
  • the bottom of the first substrate 811 and the bottom of the second substrate 821 are fixedly connected by a glue layer 86, and the first display element 81 and the second display element 82 as a whole are integrally closed and packaged by the first encapsulation layer 83 and the second encapsulation layer 84. And the peripheral edge portion of the first encapsulation layer 83 and the peripheral edge portion of the second encapsulation layer 84 are closed and fixed by the sealing portion 85.
  • the preferred embodiment in order to improve the performance of the waterproof vapor of the preferred embodiment invading the first light emitting portion 812 and the second light emitting portion 822, the preferred embodiment is in the first light emitting portion 812 and the second light emitting portion.
  • the outer surface of portion 822 is covered with a thin film encapsulation layer 87 to enhance the moisture/oxygen barrier.
  • the thin film encapsulation layer covered by the outer surface of the light emitting portion in the display element is applicable not only to the top emission type display element but also to the bottom emission type display element.
  • the thin film encapsulation layer 87 is not limited to a single layer structure, that is, may be composed of a multilayer film, for example, a silicon nitride film and a silicon oxide film, a silicon nitride film and a film of aluminum oxide, or a combination of a silicon nitride film and a silicon oxide film and a film of aluminum oxide;
  • a suitable organic material can be added to the thin film encapsulation layer 87.
  • the enhancement of the moisture/oxygen barrier barrier in the present invention can also be achieved by other embodiments, such as providing a desiccant within the two encapsulation layers.
  • the encapsulation process of the preferred embodiment is similar or identical to the encapsulation process of the first preferred embodiment. For details, refer to the encapsulation process of the first preferred embodiment.
  • the preferred embodiment improves the waterproof vapor intrusion performance of the preferred embodiment by the arrangement of the thin film encapsulation layer, and further protects the light emitting portion, thereby further improving the preferred embodiment. Service life.

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Abstract

一种双面OLED显示装置，包括第一显示元件（11）、第二显示元件（12）、第一封装层（13）以及第二封装层（14），第一显示元件（11）设置在第二显示元件（12）的上方且二者的发光方向相反，第一封装层（13）设置在第一显示元件（11）的上方，第二封装层（14）设置在第二显示元件（12）的下方；第一显示元件（11）和第二显示元件（12）通过第一封装层（13）和第二封装层（14）进行闭合封装。

Description

双面OLED显示装置 技术领域
本发明涉及一种双面OLED显示装置，特别是涉及一种封装结构简单且可防止水汽入侵的双面OLED显示装置。
 背景技术
随着科技的发展，人们对双面显示装置的显示要求越来越高，特别是双面OLED显示装置。
而一般的双面OLED显示装置在封装结构是采用封装薄膜分别对两个显示面进行封装，这样的封装结构较为复杂，不利于生产率的提升；另外，双面OLED显示装置多用于环境多变、较恶劣的地方，例如室外展示牌、广告牌等，因此双面OLED显示装置的内部容易被水汽侵入而破坏其内部的电子元件等，进而导致其寿命降低。
故，有必要提供一种双面OLED显示装置，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种封装结构简单且可防止水汽侵入的双面OLED显示装置；以解决现有的双面OLED显示装置的封装结构复杂以及防水汽侵入效果较差的技术问题。
 技术解决方案
本发明实施例提供一种双面OLED显示装置，其包括：第一显示元件、第二显示元件、第一封装层以及第二封装层，所述第一显示元件设置在所述第二显示元件的上方且二者的发光方向相反，所述第一封装层设置在所述第一显示元件的上方，所述第二封装层设置在所述第二显示元件的下方；
所述第一显示元件和所述第二显示元件作为一个整体通过所述第一封装层和所述第二封装层进行整体闭合封装且所述第一封装层和所述第二封装层通过密封部闭合固定；
所述密封部为密封胶框或封胶层；
所述第一发光部和所述第二发光部均包括发光层、阳极、有机功能层和阴极；
所述发光层设置在所述阳极和所述有机功能层之间，所述有机功能层设置在所述发光层和所述阴极之间。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
其中，所述第一基板的底部和所述第二基板的底部通过胶层固定连接，所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
其中，所述第一基板的四周边缘部分和所述第二基板的四周边缘部分可全部或部分伸入所述密封部中且通过所述密封部将所述第一基板和所述第二基板固定连接；所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
所述第一显示元件与所述第二显示元件共用一基板，所述第一显示元件还包括形成于所述基板之上的第一发光部，所述第二显示元件还包括形成于所述基板之上的第二发光部；
所述第一发光部设置在所述基板的上表面，所述第二发光部设置在所述基板的下表面；且所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，所述基板伸入所述的密封部中。
在本发明所述的双面OLED显示装置中，当所述第一显示元件为底发光型显示元件，所述第二显示元件为顶发光型显示元件时，所述第一显示元件和所述第二显示元件同向设置；
第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
其中，所述第一封装层为所述第一基板，所述第二基板的四周边缘部分伸入所述密封部中且通过所述密封部与所述第一基板固定连接，所述第一基板的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为底发光型显示元件时，所述第一显示元件和所述第二显示元件对向设置；
第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
其中，所述第一封装层为所述第一基板，所述第二封装层为第二基板；所述第一基板的四周边缘部分和所述第二基板的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，所述第一发光部和所述第二发光部的外表面均完全覆盖有薄膜封装层。
本发明实施例提供一种双面OLED显示装置，其包括：第一显示元件、第二显示元件、第一封装层以及第二封装层，所述第一显示元件设置在所述第二显示元件的上方且二者的发光方向相反，所述第一封装层设置在所述第一显示元件的上方，所述第二封装层设置在所述第二显示元件的下方；
其中，第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
所述第一基板和所述第二基板固定连接，所述第一显示元件和所述第二显示元件作为一个整体通过所述第一封装层和所述第二封装层进行闭合封装且所述第一封装层和所述第二封装层通过密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
其中，所述第一基板的底部和所述第二基板的底部通过胶层固定连接，所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
其中，所述第一基板的四周边缘部分和所述第二基板的四周边缘部分可全部或部分伸入所述密封部中且通过所述密封部将所述第一基板和所述第二基板固定连接；所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
其中，所述第一基板和所述第二基板一体成型构成一基板，即所述第一发光部设置在所述基板的上表面，所述第二发光部设置在所述基板的下表面；且所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，所述基板伸入所述的密封部中。
在本发明所述的双面OLED显示装置中，当所述第一显示元件为底发光型显示元件，所述第二显示元件为顶发光型显示元件时，所述第一显示元件和所述第二显示元件同向设置；
其中，所述第一封装层为所述第一基板，所述第二基板的四周边缘部分伸入所述密封部中且通过所述密封部与所述第一基板固定连接，所述第一基板的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，当所述第一显示元件和所述第二显示元件均为底发光型显示元件时，所述第一显示元件和所述第二显示元件对向设置；
其中，所述第一封装层为所述第一基板，所述第二封装层为第二基板；所述第一基板的四周边缘部分和所述第二基板的四周边缘部分通过所述密封部闭合固定。
在本发明所述的双面OLED显示装置中，其特征在于，所述第一发光部和所述第二发光部的外表面均完全覆盖有薄膜封装层。
在本发明所述的双面OLED显示装置中，所述密封部为密封胶框或封胶层。
在本发明所述的双面OLED显示装置中，所述第一发光部和所述第二发光部均包括发光层、阳极、有机功能层和阴极；
所述发光层设置在所述阳极和所述有机功能层之间，所述有机功能层设置在所述发光层和所述阴极之间。
 有益效果
相较于现有的双面OLED显示装置，本发明的双面OLED显示装置通过第一封装层和第二封装层的设置，将OLED显示装置进行整体的封装，使得本发明的封装结构简单；另外本发明的双面OLED显示装置通过密封部的设置，使得用封装层的进行封装时，进一步增强了封装结构的密闭性，从而提升了本发明的防水汽侵入的性能，进而提高了本发明的使用寿命；解决了现有的双面OLED显示装置的封装结构较为复杂，且防水汽侵入性能较差的技术问题。
 附图说明
为让本发明的上述内容能更明显易懂，下文特举优选实施例，并配合所附图式，作详细说明如下：
图1为本发明的双面OLED显示装置的第一优选实施例的结构示意图；
图2为本发明的双面OLED显示装置的第二优选实施例的结构示意图；
图3为本发明的双面OLED显示装置的第三优选实施例的结构示意图；
图4为本发明的双面OLED显示装置的第四优选实施例的结构示意图；
图5为本发明的双面OLED显示装置的第五优选实施例的结构示意图；
图6为本发明的双面OLED显示装置的第六优选实施例的结构示意图；
图7为本发明的双面OLED显示装置的第七优选实施例的结构示意图；
图8为本发明的双面OLED显示装置的第八优选实施例的结构示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
在图中，结构相似的单元是以相同标号表示。
请参照图1，图1为本发明的双面OLED显示装置的第一优选实施例的结构示意图。该双面OLED显示装置10包括第一显示元件11、第二显示元件12、第一封装层13和第二封装层14。
第一显示元件11设置在第二显示元件12的上方且二者的发光方向相反，第一封装层13设置在第一显示元件11的上方，第二封装层14设置在第二显示元件12的下方；第一显示元件11包括第一基板111和形成于第一基板111之上的第一发光部112，第二显示元件12包括第二基板121和形成于第二基板121之上的第二发光部122。
第一显示元件11和第二显示元件12均为顶发光型显示元件，第一显示元件11和第二显示元件12背向设置；
第一基板111的底部和第二基板121的底部通过胶层16固定连接，第一显示元件11和第二显示元件12作为一个整体通过第一封装层13和第二封装层14进行整体闭合封装且第一封装层13的四周边缘部分和第二封装层14的四周边缘部分通过密封部15闭合固定。
其中，第一发光部112和第二发光部122均包括发光层、阳极、第一有机功能层和阴极；发光层设置在阳极和第一有机功能层之间，第一有机功能层设置在发光层和阴极之间，且阴极与辅助电极连接。其中第一有机功能层可包括空穴阻挡层、电子传输层以及电子注入层中的至少一层。
此外第一发光部112和第二发光部122还可包括设置在设置在发光层和阳极之间的第二有机功能层，第二有机功能层可包括空穴注入层、空穴传输层以及电子阻挡层中的至少一层。
可以理解的是，本双面OLED显示装置多用于户外，故经常遇到恶劣的天气，比如暴雨狂风等，这样就使得外物容易触碰本双面OLED显示装置，因此为了增加本优选实施例的封装结构的强度，第一封装层13和第二封装层14均优选为结构较强的外盖，而为了使得本优选实施例的封装结构强度进一步的加强，密封部15可优选为封装胶层或密封胶框等；
整体封装中的操作可以是：首先将第一封装层13的封装面朝上放置，随后将第一显示元件11的第一基板111和第二显示元件12的第二基板121的底板通过胶层16贴合，并放置在第一封装层13上。然后在第一封装层13上涂覆封装胶层。最后将第二封装层14覆盖在第一显示元件11和第二显示元件12上，固化封装胶层，即完成了相应的整体封装操作。
本优选实施例的有益效果是：本优选实施例通过第一封装层13和第二封装层14的设置，将第一显示元件11和第二显示元件12进行整体的封装，使得本优选实施例的封装结构简单；另外本优选实施例通过密封部15的设置，使得用第一封装层13和第二封装层14的进行封装时，进一步增强了封装结构的密闭性，从而提升了本优选实施例的防水汽侵入的性能，进而提高了本优选实施例的使用寿命。
请参考请参照图2，图2为本发明的双面OLED显示装置的第二优选实施例的结构示意图。该双面OLED显示装置20包括第一显示元件21、第二显示元件22、第一封装层23和第二封装层24。
第一显示元件21设置在第二显示元件22的上方且二者的发光方向相反，第一封装层23设置在第一显示元件21的上方，第二封装层24设置在第二显示元件22的下方；第一显示元件21包括第一基板211和形成于第一基板211之上的第一发光部212，第二显示元件22包括第二基板221和形成于第二基板221之上的第二发光部222。
第一显示元件21和第二显示元件22均为顶发光型显示元件时，第一显示元件21和第二显示元件22背向设置；
第一基板211和第二基板221的四周边缘部分全部伸入密封部25中且通过密封部25将第一基板211和第二基板221固定连接，这样的结构同时固定了第一显示元件21和第二显示元件22，以及固定第一显示元件21和第二显示元件22与相应封装层的连接。
第一显示元件21和第二显示元件22作为一个整体通过第一封装层23和第二封装层24进行整体闭合封装且第一封装层23的四周边缘部分和第二封装层24的四周边缘部分通过密封部25闭合固定。
第一封装层23和第二封装层24均优选为结构较强的外盖，而为了使得本优选实施例的封装结构强度进一步的加强，密封部25可优选为封装胶层或密封胶框等。
本优选实施例的有益效果是：相较第一优选实施例，本优选实施例通过将第一基板211和第二基板221伸入密封部25中，这样的结构同时固定了第一显示元件21和第二显示元件22，以及固定第一显示元件21和第二显示元件22与相应封装层的连接，同时第一显示元件21和第二显示元件22中的OLED器件层与各自对应的第一基板211和第二基板221之间的切割边缘和走线宽度位于密封部25之内，同时密封部25将两显示面全部封闭，有助于减小显示器额缘宽度，提升窄边框化。
请参考请参照图3，图3为本发明的双面OLED显示装置的第三优选实施例的结构示意图。该双面OLED显示装置30包括第一显示元件31、第二显示元件32、第一封装层33和第二封装层34。
第一显示元件31设置在第二显示元件32的上方且二者的发光方向相反，第一封装层33设置在第一显示元件31的上方，第二封装层34设置在第二显示元件32的下方；第一显示元件31包括第一基板311和形成于第一基板311之上的第一发光部312，第二显示元件32包括第二基板321和形成于第二基板321之上的第二发光部322。
第一显示元件31和第二显示元件32均为顶发光型显示元件时，第一显示元件31和第二显示元件32背向设置；
第一显示元件31和第二显示元件32作为一个整体通过第一封装层33和第二封装层34进行整体闭合封装且第一封装层33的四周边缘部分和第二封装层34的四周边缘部分通过密封部35闭合固定。
优选实施例相较于第二优选实施例，本优选实施例的第一基板311的四周边缘部分和第二基板321四周边缘部分仅部分伸入密封部35中，如第一基板311的左右两侧的边缘部分伸入到密封部35中，第二基板321的前后两侧的边缘部分伸入到密封部35中，即第一基板311的边缘部分的伸入延伸方向与第二基板321的边缘部分的伸入延伸方向垂直。
第一封装层33和第二封装层34均优选为结构较强的外盖，而为了使得本优选实施例的封装结构强度进一步的加强，密封部35可优选为封装胶层或密封胶框等。
本优选实施例的有益效果是：相较于第二优选实施例，本优选实施例通过第一基板311的四周边缘部分和第二基板321的四周边缘部分仅部分伸入密封部35中的设置，且二者呈互补状态，使得本优选实施例在满足能稳定固定第一基板311和第二基板321的情况下可以节省第一基板311和第二基板321的材料，从而降低成本。
请参照图4，图4为本发明的双面OLED显示装置的第四优选实施例的结构示意图。该双面OLED显示装置40包括第一显示元件41、第二显示元件42、第一封装层43和第二封装层44。
第一显示元件41设置在第二显示元件42的上方且二者的发光方向相反，第一封装层43设置在第一显示元件41的上方，第二封装层44设置在第二显示元件42的下方；第一显示元件41包括第一基板411和形成于第一基板411之上的第一发光部412，第二显示元件42包括第二基板421和形成于第二基板421之上的第二发光部422。
第一显示元件41和第二显示元件42均为顶发光型显示元件时，第一显示元件41和第二显示元件42背向设置；
第一显示元件41和第二显示元件42作为一个整体通过第一封装层43和第二封装层44进行整体闭合封装且第一封装层43的四周边缘部分和第二封装层44的四周边缘部分通过密封部45闭合固定。
相较于第一优选实施例，本优选实施例的第一基板411和第二基板421为一体成型构成基板46，即第一显示元件41和第二显示元件42共用基板46，使得第一发光部412位于基板46的上表面，第二发光部422位于基板46的下表面。
第一封装层43和第二封装层44均优选为结构较强的外盖，而为了使得本优选实施例的封装结构强度进一步的加强，密封部45可优选为封装胶层或密封胶框等；
本优选实施例的有益效果是：相较于第一优选实施例，本优选实施例将第一基板411和第一基板421一体化，使得第一显示元件41和第二显示元件42共用一基板46，使得本优选实施例中第一显示元件41和第二显示元件41之间的整体性更强，同时也简化了封装结构。
请参照图5，图5为本发明的双面OLED显示装置的第五优选实施例的结构示意图。该双面OLED显示装置50包括第一显示元件51、第二显示元件52、第一封装层53和第二封装层54。
相较于第四优选实施例，本优选实施例在第四优选实施例的基础上，将一体化的基板56的四周边缘部分伸入了密封部55中。
本优选实施例的有益效果是：相较于第四优选实施例本优选实施例将基板56的四周边缘部分伸入密封部55，这样的结构同时固定了第一显示元件51和第二显示元件52，以及固定第一显示元件51和第二显示元件52与相应封装层的连接，使得第一显示元件51和第二显示元件52的整体性更稳固，从而提升本优选实施例的强度。
请参照图6，图6为本发明的双面OLED显示装置的第六优选实施例的结构示意图。该双面OLED显示装置60包括第一显示元件61、第二显示元件62和第二封装层63。
第一显示元件61设置在第二显示元件62的上方且二者的发光方向相反，第一显示元件61包括第一基板611和形成于第一基板611之上的第一发光部612，第二显示元件62包括第二基板621和形成于第二基板621之上的第二发光部622。
第一显示元件61是底发光型显示元件，第二显示元件62为顶发光型显示元件时，第一显示元件61和第二显示元件62同向设置；
其中，第一基板611作为第一封装层，位于在第一显示元件61的上端，第二封装层63设置在第二显示元件62的下方；第二基板621的四周边缘部分伸入密封部64中且通过密封部64与第一基板611固定连接；
第一显示元件61和第二显示元件62作为一个整体通过第一基板611和第二封装层63进行整体闭合封装且第一基板611的四周边缘部分和第二封装层63的四周边缘部分通过密封部64闭合固定。
第二封装层63均优选为结构较强的外盖，而为了使得本优选实施例的封装结构强度进一步的加强，密封部64可优选为封装胶层或密封胶框等；
本优选实施例的有益效果是：本优选实施例通过将第一基板611作为第一封装层的设置，节省了一个封装层的材料，从而降低了本优选实施例的成本。
请参照图7，图7为本发明的双面OLED显示装置的第六优选实施例的结构示意图。该双面OLED显示装置70包括第一显示元件71和第二显示元件72。
第一显示元件71设置在第二显示元件72的上方且二者的发光方向相反，第一显示元件71包括第一基板711和形成于第一基板711之上的第一发光部712，第二显示元件72包括第二基板722和形成于第二基板722之上的第二发光部721。
第一显示元件71和第二显示元件72均为底发光型显示元件时，第一显示元件71和第二显示元件72对向设置；
其中，第一基板711作为第一封装层，位于在第一显示元件71的上端，第二基板722作为第二封装层，位于在第二显示元件72的下端；
第一显示元件71和第二显示元件72作为一个整体通过第一基板711和第二基板722进行整体闭合封装且第一基板711的四周边缘部分和第二基板722的四周边缘部分通过密封部73闭合固定。
为了使得本优选实施例的封装结构强度进一步的加强，密封部73可优选为封装胶层或密封胶框等；
本优选实施例的有益效果是：相较于第六优选实施例，本优选实施例通过将第一基板711和第二基板722均作为封装层，进一步节省了封装层的材料，从而降低了本优选实施例的成本。
请参照图8，图8为本发明的双面OLED显示装置的第八优选实施例的结构示意图。该双面OLED显示装置80包括第一显示元件81、第二显示元件82、第一封装层83和第二封装层84。
第一显示元件81设置在第二显示元件82的上方且二者的发光方向相反，第一封装层83设置在第一显示元件81的上方，第二封装层84设置在第二显示元件82的下方；第一显示元件81包括第一基板811和形成于第一基板811之上的第一发光部812，第二显示元件82包括第二基板821和形成于第二基板821之上的第二发光部822。
第一显示元件81和第二显示元件82均为顶发光型显示元件时，第一显示元件81和第二显示元件82背向设置；
第一基板811的底部和第二基板821的底部通过胶层86固定连接，第一显示元件81和第二显示元件82作为一个整体通过第一封装层83和第二封装层84进行整体闭合封装且第一封装层83的四周边缘部分和第二封装层84的四周边缘部分通过密封部85闭合固定。
相较于第一优选实施，本优选实施例为了提高本优选实施例的防水汽侵入第一发光部812和第二发光部822的性能，本优选实施例于第一发光部812和第二发光部822的外表面均覆盖了薄膜封装层87，以起到水气/氧气隔绝的增强作用。
可以理解的是，于显示元件中的发光部的外表面覆盖的薄膜封装层，不仅适用于顶发光型显示元件，而且也适用于底发光型显示元件。
另外，在薄膜封装层87的材料方面，氮化硅、氧化硅或三氧化二铝等均可选择，同时薄膜封装层87并不限于单层结构，也就是说可由多层薄膜组成，例如以一个氮化硅薄膜和一个氧化硅薄膜、一个氮化硅薄膜和一个三氧化二铝薄膜，或是一个氮化硅薄膜和一个氧化硅薄膜以及一个三氧化二铝薄膜等组合而成；这里还可在薄膜封装层87中加入适当的有机材料。
本发明中水气／氧气隔绝阻挡的增强还可以通过其他实施方式来实现，例如在两封装层之内设置干燥剂。
本优选实施例的封装过程与第一优选实施例的封装过程相似或相同，具体请参照第一优选实施例的封装过程。
本优选实施例相较于上述优选实施例，本优选实施例通过薄膜封装层的设置，提高了本优选实施例的防水汽侵入性能，进一步保护了发光部，从而进一步提升了本优选实施例的使用寿命。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种双面OLED显示装置，其包括：第一显示元件、第二显示元件、第一封装层以及第二封装层，所述第一显示元件设置在所述第二显示元件的上方且二者的发光方向相反，所述第一封装层设置在所述第一显示元件的上方，所述第二封装层设置在所述第二显示元件的下方；
    所述第一显示元件和所述第二显示元件作为一个整体通过所述第一封装层和所述第二封装层进行整体闭合封装且所述第一封装层和所述第二封装层通过密封部闭合固定；
    所述密封部为密封胶框或封胶层；
    所述第一发光部和所述第二发光部均包括发光层、阳极、有机功能层和阴极；
    所述发光层设置在所述阳极和所述有机功能层之间，所述有机功能层设置在所述发光层和所述阴极之间。
  2. 根据权利要求1所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一基板的底部和所述第二基板的底部通过胶层固定连接，所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  3. 根据权利要求1所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一基板的四周边缘部分和所述第二基板的四周边缘部分可全部或部分伸入所述密封部中且通过所述密封部将所述第一基板和所述第二基板固定连接；所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  4. 根据权利要求1所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    所述第一显示元件与所述第二显示元件共用一基板，所述第一显示元件还包括形成于所述基板之上的第一发光部，所述第二显示元件还包括形成于所述基板之上的第二发光部；
    所述第一发光部设置在所述基板的上表面，所述第二发光部设置在所述基板的下表面；且所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  5. 根据权利要求4所述的双面OLED显示装置，其中所述基板伸入所述的密封部中。
  6. 根据权利要求1所述的双面OLED显示装置，其中当所述第一显示元件为底发光型显示元件，所述第二显示元件为顶发光型显示元件时，所述第一显示元件和所述第二显示元件同向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一封装层为所述第一基板，所述第二基板的四周边缘部分伸入所述密封部中且通过所述密封部与所述第一基板固定连接，所述第一基板的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  7. 根据权利要求1所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为底发光型显示元件时，所述第一显示元件和所述第二显示元件对向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一封装层为所述第一基板，所述第二封装层为第二基板；所述第一基板的四周边缘部分和所述第二基板的四周边缘部分通过所述密封部闭合固定。
  8. 根据权利要求1所述的双面OLED显示装置，其中所述第一发光部和所述第二发光部的外表面均完全覆盖有薄膜封装层。
  9. 一种双面OLED显示装置，其包括：第一显示元件、第二显示元件、第一封装层以及第二封装层，所述第一显示元件设置在所述第二显示元件的上方且二者的发光方向相反，所述第一封装层设置在所述第一显示元件的上方，所述第二封装层设置在所述第二显示元件的下方；
    所述第一显示元件和所述第二显示元件作为一个整体通过所述第一封装层和所述第二封装层进行整体闭合封装且所述第一封装层和所述第二封装层通过密封部闭合固定。
  10. 根据权利要求9所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一基板的底部和所述第二基板的底部通过胶层固定连接，所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  11. 根据权利要求9所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一基板的四周边缘部分和所述第二基板的四周边缘部分可全部或部分伸入所述密封部中且通过所述密封部将所述第一基板和所述第二基板固定连接；所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  12. 根据权利要求9所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为顶发光型显示元件时，所述第一显示元件和所述第二显示元件背向设置；
    所述第一显示元件与所述第二显示元件共用一基板，所述第一显示元件还包括形成于所述基板之上的第一发光部，所述第二显示元件还包括形成于所述基板之上的第二发光部；
    所述第一发光部设置在所述基板的上表面，所述第二发光部设置在所述基板的下表面；且所述第一封装层的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  13. 根据权利要求12所述的双面OLED显示装置，其中所述基板伸入所述的密封部中。
  14. 根据权利要求9所述的双面OLED显示装置，其中当所述第一显示元件为底发光型显示元件，所述第二显示元件为顶发光型显示元件时，所述第一显示元件和所述第二显示元件同向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一封装层为所述第一基板，所述第二基板的四周边缘部分伸入所述密封部中且通过所述密封部与所述第一基板固定连接，所述第一基板的四周边缘部分和所述第二封装层的四周边缘部分通过所述密封部闭合固定。
  15. 根据权利要求9所述的双面OLED显示装置，其中当所述第一显示元件和所述第二显示元件均为底发光型显示元件时，所述第一显示元件和所述第二显示元件对向设置；
    第一显示元件包括第一基板和形成于所述第一基板之上的第一发光部，所述第二显示元件包括第二基板和形成于所述第二基板之上的第二发光部；
    其中，所述第一封装层为所述第一基板，所述第二封装层为第二基板；所述第一基板的四周边缘部分和所述第二基板的四周边缘部分通过所述密封部闭合固定。
  16. 根据权利要求9所述的双面OLED显示装置，其中所述第一发光部和所述第二发光部的外表面均完全覆盖有薄膜封装层。
  17. 根据权利要求9所述的双面OLED显示装置，其中所述密封部为密封胶框或封胶层。
  18. 根据权利要求9所述的双面OLED显示装置，其中所述第一发光部和所述第二发光部均包括发光层、阳极、有机功能层和阴极；
    所述发光层设置在所述阳极和所述有机功能层之间，所述有机功能层设置在所述发光层和所述阴极之间。
PCT/CN2016/101954 2016-08-31 2016-10-13 双面oled显示装置 Ceased WO2018040237A1 (zh)

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CN106530991A (zh) * 2016-12-28 2017-03-22 武汉华星光电技术有限公司 双面显示装置
CN109585507B (zh) * 2018-11-26 2021-05-28 武汉华星光电半导体显示技术有限公司 显示装置及其制造方法
CN110931652A (zh) * 2019-11-26 2020-03-27 深圳市华星光电半导体显示技术有限公司 Oled双面显示装置

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