WO2016074445A1 - 封装方法、封装结构及显示装置 - Google Patents
封装方法、封装结构及显示装置 Download PDFInfo
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- WO2016074445A1 WO2016074445A1 PCT/CN2015/077671 CN2015077671W WO2016074445A1 WO 2016074445 A1 WO2016074445 A1 WO 2016074445A1 CN 2015077671 W CN2015077671 W CN 2015077671W WO 2016074445 A1 WO2016074445 A1 WO 2016074445A1
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- substrate
- package
- heat dissipation
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 119
- 230000017525 heat dissipation Effects 0.000 claims abstract description 60
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 22
- 229910021389 graphene Inorganic materials 0.000 claims description 20
- 239000008393 encapsulating agent Substances 0.000 claims description 16
- 239000002041 carbon nanotube Substances 0.000 claims description 12
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 12
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 10
- 239000011817 metal compound particle Substances 0.000 claims description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 9
- 238000005538 encapsulation Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 claims description 6
- 239000002238 carbon nanotube film Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 239000003292 glue Substances 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Images
Classifications
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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
- H10K59/80—Constructional details
- H10K59/8794—Arrangements for heating and cooling
-
- 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
-
- 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
- H10K50/87—Arrangements for heating or cooling
-
- 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
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- 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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/221—Carbon nanotubes
Definitions
- the present invention relates to the field of display, and in particular, to a packaging method, a package structure, and a display device.
- the luminescent materials and functional materials in the organic electroluminescent device are sensitive to water and gas, and therefore, the sealing requirements for oxygen and the barrier to water are high.
- the current small and medium-sized OLED display devices are mostly packaged by a laser sealing process and a Frit material (glass material), that is, using a laser beam to move and heat the glass encapsulant to make the glass package.
- the glue melts and the molten glass encapsulant forms a hermetic package connection between the upper and lower glass substrates to provide a hermetic seal.
- the instantaneous temperature during the packaging process can reach several hundred degrees. Such a high package temperature can damage the backplane structure of the driving transistor in the OLED device, thereby affecting the lifetime of the device.
- the technical problem to be solved by the present invention is to provide a packaging method, a package structure and a display device, which can effectively suppress a rapid rise of the substrate temperature caused by laser irradiation and reduce damage to the driving back plate.
- an embodiment of the present invention provides a packaging method, including:
- the pattern of the encapsulant is laser irradiated, and the encapsulant is melt sintered to form an encapsulant structure between the first substrate and the second substrate.
- the present invention further provides a package structure including a first substrate, a second substrate, and a package adhesive structure located in the package region to seal the first substrate and the second substrate, the package The region is further provided with a heat dissipation structure between the first substrate and the second substrate.
- the present invention also provides a display device including the above package structure.
- FIG. 1 is a flow chart of a packaging method according to an embodiment of the present invention.
- FIG. 2 is a flow chart of fabricating a heat dissipation structure using a carbon nanotube material according to an embodiment of the present invention
- 3a-3g are schematic views of the direction of film drawing of the carbon nanotube film provided by the embodiment of the present invention.
- FIG. 4 is a flow chart of fabricating a heat dissipation structure using a graphene material according to an embodiment of the present invention
- FIG. 5 is a schematic diagram of a heat dissipation structure formed by using a graphene material according to an embodiment of the present invention
- FIG. 6 is a schematic diagram of a package structure according to an embodiment of the present invention.
- FIG. 7 is a schematic view of a package adhesive structure provided by an embodiment of the present invention.
- FIG. 8 is a schematic diagram of a heat dissipation structure according to an embodiment of the present invention.
- FIG. 9 is a schematic diagram of another package structure provided by an embodiment of the present invention.
- FIG. 1 is a flowchart of a packaging method according to an embodiment of the present invention, where the packaging method includes:
- S11 forming a pattern of the encapsulant on the package region of the first substrate, and forming a heat dissipation structure on the package region of any one of the first substrate and the second substrate;
- S12 bonding the first substrate and the second substrate, and aligning a package area of the first substrate with a package area of the second substrate;
- the packaging method provided by the embodiment of the present invention, by fabricating a heat dissipation structure on the package area, when the package glue is melted by laser irradiation, heat can be quickly dissipated by the heat dissipation structure, and the substrate caused by laser irradiation is effectively suppressed.
- the rapid rise in temperature reduces damage to the drive backplane.
- the packaging method provided by the embodiments of the present invention can be used for packaging of, for example, an organic electroluminescent device (OLED), wherein the material for forming the heat dissipation structure may be a material such as a metal or a nanocarbon material.
- OLED organic electroluminescent device
- the material for forming the heat dissipation structure may be a material such as a metal or a nanocarbon material.
- a nanocarbon layer is formed on the package region of any one of the first substrate and the second substrate as the heat dissipation structure, wherein the nanocarbon layer may be a carbon nanotube material or a graphene material, preferably,
- a multilayer nanocarbon layer can be provided as the heat dissipation structure.
- the following steps may be added in the process of forming the nanocarbon layer as the heat dissipation structure: doping the carbon nano layer with the metal compound particles to form a doped layer.
- doping may be performed by doping by vacuum evaporation.
- the metal compound particles may have a particle diameter of 10 nm to 50 nm, for example, 20 nm, 30 nm, or 40 nm, and the material of the metal compound particles may be a material such as aluminum chloride or zinc iodide.
- the heat dissipation effect can be improved by 30% to 40%.
- Table 1 for example, for the heat dissipation structure of No. 8, the composition includes only two layers of graphene layers having a heat transfer coefficient of 4180 W/m*K, which is doped with aluminum chloride particles having a particle diameter of 10 nm.
- the heat transfer coefficient can reach 6000 W/m*K, which greatly improves the heat dissipation effect.
- the above doped layer may be formed between the plurality of nanocarbon layers.
- the step of forming the nanocarbon layer in the package region of any of the substrates includes forming a nanocarbon layer matching the shape of the package region of the substrate on the package region of any of the substrates.
- the nanocarbon layer can be formed on the package region of the substrate by the following method:
- a nanocarbon film is formed on the bonding region, and the nanocarbon film is patterned to form a nanocarbon layer matching the shape of the package region of the substrate on the package region of the substrate.
- the obtained nanocarbon film is attached to the bonding zone.
- FIG. 2 is a flow chart of fabricating a heat dissipation structure by using the above method 1 and carbon nanotube material, including:
- the first substrate may be a cap plate
- the second substrate is a BP substrate ( TFT substrate)
- the bonding region may be formed by UV glue; in particular, UV glue may be first coated on the BP substrate (TFT substrate), and the process of coating the UV glue may be printing, Spin coating, Slit (slit coating), Spin & Slit (slack-type coating first, then applying a uniform coating and flattening of the coating by rotation), and then pre-baking the substrate coated with the UV glue. Volatile part of the solvent forms the bonding zone described above;
- S22 forming a carbon nanotube film by using a die-casting process on the bonding region, specifically, covering the carbon nanotubes on the pre-baked substrate, and covering the carbon nanotubes with the carbon nanotube covering structure.
- the film is formed by a film.
- the carbon nanotube covering structure can be formed by pulling the film in different pulling directions as shown in FIGS. 3a-3g, wherein in FIGS. 3a-3g, marking the carbon nanotube layer 2
- the upper black line indicates the direction of the die. For example, for the mode in FIG. 3a, the die direction is the short side direction of the BP substrate 1, and for the mode in FIG. 3b, the die direction is the long side direction of the BP substrate 1. ;
- the UV glue is used to form the bonding region
- the bonding region can be formed by using other materials such as a thermosetting resin.
- a bonding region is formed using a thermosetting resin in step S21, a curing treatment is performed in a step S23 using a thermal curing process.
- the above heat dissipation structure can be fabricated on a BP substrate or a cover plate, preferably on a BP substrate.
- the pattern shape of the package glue and the pattern shape of the heat dissipation structure may be Same, and make the two face each other.
- FIG. 4 is a flow chart of fabricating a heat dissipation structure by using the above method 1 and graphene materials, including:
- the first substrate may be a cap plate
- the second substrate is a BP substrate
- the TFT substrate may be coated with a thermosetting resin on a package region of the BP substrate, and the process of applying the thermosetting resin may be a printing, a Spin, a Slit, a Spin & Slit process, or the like.
- S33 forming a photoresist layer on the graphene film, for example, coating a surface of the graphene film with UV glue, and pre-baking the UV glue to form a photoresist layer;
- the above method 2 for example, it can be completed by directly attaching a pattern and a specification of the graphene film to the BP substrate, that is, obtaining a patterned graphene layer in advance, and then patterning the graphene.
- the layer can be attached directly to the bonding area.
- the heat dissipation structure is further formed with a vertical through hole, wherein the through hole may be formed together in the step of fabricating a nanocarbon layer matching the shape of the package area, Via holes may also be formed in the nanocarbon layer after the nanocarbon layer matching the shape of the package region is formed. For example, a corresponding via pattern may be formed again on the nanocarbon layer matching the shape of the package region by a laser ashing process or a photolithography process.
- the adhesion between the two side portions of the heat dissipation structure can be enhanced, and the influence of the heat dissipation structure on the effect of the subsequent package can be reduced.
- the packaging method provided by the embodiment of the present invention, by fabricating a heat dissipation structure on the package area, when the package glue is melted by laser irradiation, heat can be quickly dissipated by the heat dissipation structure, and the substrate caused by laser irradiation is effectively suppressed.
- the rapid rise of the temperature reduces the damage to the driving backplane, and at the same time, the LSD (Laser Sealing Damage) is not caused by the introduction of the heat dissipation structure.
- High product packaging yield the use of nano-carbon materials has the advantages of low cost and simple process, and because the nano-carbon structure has a large heat transfer coefficient and good heat dissipation performance, the heat dissipation effect can be further improved.
- an embodiment of the present invention further provides a package structure including a first substrate 4 , a second substrate 7 , and a package region 8 for the first substrate 4 and the second substrate A sealed encapsulant structure 5, wherein the package region 8 is further provided with a heat dissipation structure 6 between the first substrate 4 and the second substrate 7.
- the first substrate may be a cap plate and the second substrate is a BP substrate (TFT substrate).
- the heat dissipation structure is further formed with a vertical through hole.
- the encapsulating structure 5 may be a Frit material.
- the heat dissipating structure is a nano carbon material, for example, a carbon nanotube material, a graphene material, or the like.
- the shape of the encapsulation structure 5 is as shown in FIG. 7.
- the pattern shape of the heat dissipation structure 6 can be made the same as the pattern shape of the encapsulation structure 5, that is, form. The shape shown in Figure 8.
- the heat dissipation structure in the embodiment of the present invention includes not only a nanocarbon layer, but also a doped layer formed by doping the nanocarbon layer with metal compound particles.
- the package structure includes a first substrate. a second substrate 7 and an encapsulant structure 5 located in the package region 8 to seal the first substrate 4 and the second substrate 7.
- the package region 8 is further provided on the first substrate 4 a heat dissipation structure 6 between the second substrate 7 and the second substrate 7, wherein the heat dissipation structure 6 includes a first nanocarbon layer 61, a second nanocarbon layer 62, and is disposed between the first nanocarbon layer 61 and the second nanocarbon layer 62.
- the doping layer 63 can significantly improve the heat dissipation effect of the heat dissipation structure by adding the doping layer 63 to the heat dissipation structure.
- the metal compound particles may have a particle diameter of 10 nm to 50 nm, for example, 20 nm, 30 nm, or 40 nm, and the material of the metal compound particles may be a material such as aluminum chloride or zinc iodide.
- the present invention provides a display device including the above package structure.
- the display device provided by the embodiment of the present invention may be any product or component having a display function such as a notebook computer display screen, a liquid crystal display, a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer, or the like.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims (15)
- 一种封装方法,包括:在第一基板的封装区域上形成封装胶的图案,在第一基板和第二基板中任一个基板的封装区域上形成散热结构;将所述第一基板与所述第二基板贴合,并使所述第一基板的封装区域与所述第二基板的封装区域对位;对所述封装胶的图案进行激光照射,将封装胶熔融烧结,以在所述第一基板与所述第二基板之间形成封装胶结构。
- 根据权利要求1所述的封装方法,其中,在第一基板和第二基板中任一个基板的封装区域上形成散热结构包括:在所述任一个基板的封装区域中形成纳米碳层。
- 根据权利要求2所述的封装方法,其中,在第一基板和第二基板中任一个基板的封装区域上形成散热结构还包括:对所述纳米碳层进行金属化合物粒子掺杂形成掺杂层。
- 根据权利要求3所述的封装方法,其中,所述金属化合物粒子的粒径为10nm~50nm。
- 根据权利要求3所述的封装方法,其中,所述金属化合物粒子的材料为氯化铝或碘化锌。
- 根据权利要求3所述的封装方法,其中,所述纳米碳层为多层,所述掺杂层形成在所述多层纳米碳层之间。
- 根据权利要求2所述的封装方法,其中,在所述任一个基板的封装区域中形成纳米碳层包括:在所述任一个基板的封装区域中形成粘合区;在所述粘合区上采用拉模工艺形成碳纳米管薄膜;对所述粘合区进行固化处理;去除所述粘合区之外的碳纳米管;对所述粘合区进行烘烤坚膜处理。
- 根据权利要求2所述的封装方法,其中,在所述任一个基板的封装区域中形成纳米碳层包括:在所述任一个基板的封装区域中形成粘合区:在所述任一个基板上形成石墨烯薄膜,其中将石墨烯薄膜通过粘合区贴附至所述任一基板上;在所述石墨烯薄膜上形成光刻胶层;对所述光刻胶层进行曝光、显影,形成图案化的光刻胶层;刻蚀掉暴露出的石墨烯,之后剥离剩余的光刻胶。
- 根据权利要求1-8任一所述的封装方法,其中,所述散热结构上还形成有垂直通孔。
- 一种封装结构,包括第一基板、第二基板以及位于封装区域以将所述第一基板与所述第二基板密封的封装胶结构,其中,所述封装区域还设有位于所述第一基板与所述第二基板之间的散热结构。
- 根据权利要求10所述的封装结构,其中,所述散热结构包括形成在所述封装区域上的纳米碳层。
- 根据权利要求11所述的封装结构,其中,所述散热结构还包括通过对所述纳米碳层进行金属化合物粒子掺杂形成的掺杂层。
- 根据权利要求12所述的封装结构,其中,所述纳米碳层为多层,所述掺杂层形成在所述多层纳米碳层之间。
- 根据权利要求10-13任一所述的封装结构,其中,所述散热结构上还形成有垂直的通孔。
- 一种显示装置,包括如权利要求11-14中任一项所述的封装结构。
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CN104409663B (zh) | 2014-11-12 | 2017-01-18 | 京东方科技集团股份有限公司 | 封装方法、封装结构及显示装置 |
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CN106206988B (zh) * | 2016-08-26 | 2019-03-15 | 昆山国显光电有限公司 | 封装结构及其制备方法、以及应用 |
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CN108511620B (zh) * | 2018-03-02 | 2020-09-08 | 江苏壹光科技有限公司 | 一种激光封装oled照明面板及封装方法 |
CN108428806B (zh) * | 2018-05-14 | 2020-02-14 | 昆山国显光电有限公司 | 显示屏及其制造方法、显示装置 |
CN111864117A (zh) * | 2020-07-30 | 2020-10-30 | 福建华佳彩有限公司 | 一种显示面板封装结构及其封装方法 |
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