WO2022242329A1 - 一种oled显示装置及其制备方法、显示终端 - Google Patents

一种oled显示装置及其制备方法、显示终端 Download PDF

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Publication number
WO2022242329A1
WO2022242329A1 PCT/CN2022/084108 CN2022084108W WO2022242329A1 WO 2022242329 A1 WO2022242329 A1 WO 2022242329A1 CN 2022084108 W CN2022084108 W CN 2022084108W WO 2022242329 A1 WO2022242329 A1 WO 2022242329A1
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WO
WIPO (PCT)
Prior art keywords
glue
dam
oled
display device
oled screen
Prior art date
Application number
PCT/CN2022/084108
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English (en)
French (fr)
Inventor
任宝刚
刘铠
吴潘
刘仁
Original Assignee
荣耀终端有限公司
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Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP22744629.1A priority Critical patent/EP4114151A4/en
Publication of WO2022242329A1 publication Critical patent/WO2022242329A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • G09F9/335—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 being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H04M1/0269—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel mounted in a fixed curved configuration, e.g. display curved around the edges of the telephone housing
    • 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 application relates to the field of display technology, in particular to an OLED display device, a manufacturing method thereof, and a display terminal.
  • OLED organic light emitting diode, organic light emitting diode
  • the present application provides an OLED display device, a preparation method thereof, and a display terminal, which can reduce the black border of the OLED screen and at the same time ensure the waterproof and airtightness of the OLED screen.
  • the present application provides an OLED (organic light emitting diode) display device.
  • the OLED display device can be divided into a head area and a tail area, and the head area has two corners.
  • the OLED display device includes a middle frame and an OLED screen, wherein the middle frame includes a bottom plate and a side plate disposed on one side of the bottom plate, and the side plate of the middle frame is provided at least in the tail area.
  • a supporting structure is used to support the OLED screen.
  • the OLED screen includes super clean film (super clean foam, SCF), display layer and encapsulation cover that are stacked.
  • the protection of the clean film; and the ultra-clean film acts as a buffer for the OLED screen.
  • the OLED display device provided by this application adopts side sealing glue combined with caulking glue and transition glue for waterproof sealing, and can cancel the support structure corresponding to this part of the OLED screen on the side panel of the middle frame, thereby effectively reducing the size of the black border of the OLED screen , thereby improving the overall aesthetics of the device.
  • the OLED display device provided by the present application uses side sealing glue, caulking glue and transition glue to carry out waterproof sealing of the whole machine, which can guarantee and improve the waterproof performance of the whole device.
  • the transitional connection glue can be set to include a dam structure and glue filling.
  • the dam structure specifically includes a first dam and a second dam, and there is a gap between the second dam and the first dam. gap.
  • the first dam is connected with side sealant, caulking glue and back glue; Glue fills the gap.
  • a glue hole for filling the glue can be provided on the part of the bottom plate corresponding to the gap.
  • the vertical projection of the packaging cover plate on the bottom plate can be controlled to cover the vertical projection of the side sealant on the bottom plate.
  • the side sealant can be controlled to have a certain distance from the edge of the package cover to prevent the side sealant from exceeding the edge of the package cover, resulting in occurrence of cracks between the package cover and the side plate during assembly. put one's oar in.
  • the application amount of the side sealant can be controlled so that the side sealant is aligned with the side edge of the package cover.
  • the packaging cover points to the direction of the side panels, and there is an avoidance gap between the packaging cover and the side panels.
  • the present application provides a display terminal, including any OLED display device provided by the technical solution in the first aspect above.
  • the OLED display device in the display terminal provided by this application adopts side sealing glue combined with caulking glue and transition glue for waterproof sealing, and the supporting structure corresponding to this part of the OLED screen can be canceled on the side panel of the middle frame, so that it can effectively Reduce the size of the black border of the OLED screen, thereby improving the overall aesthetics of the device.
  • the OLED display device provided by the present application uses side sealing glue, caulking glue and transition glue to perform waterproof sealing of the whole machine, which can guarantee and improve the waterproof performance of the whole device.
  • the present application provides a method for preparing an OLED display device, comprising:
  • each corner is provided with a transition glue, and the side sealant and the caulking glue are connected through the transition glue. It is used to realize the overall sealing of the OLED display device, thereby improving the waterproof performance of the OLED display device.
  • the method of connecting the middle frame and the OLED screen through the transition glue includes:
  • the dam glue dispensing process Before filling the gap filler, adopt the dam glue dispensing process to form the first dam and the second dam, so that there is a gap between the second dam and the first dam, and the first dam can be connected to the side seal Glue, caulking glue and adhesive backing, the second dam is set on the side of the first dam near the tail area, and the second dam is connected to the caulking glue and backing adhesive;
  • the gap filler After filling the gap filler, fill the gap with the glue through the openings in the corresponding gaps of the bottom plate, so that the glue filling connects the side sealant, the first dam, the second dam, the back glue and the gap filler.
  • FIG. 1 is a structural diagram of an OLED display device used in the prior art
  • Fig. 2 is a cross-sectional view of the OLED display device at C' in Fig. 1;
  • FIG. 3 is a structural diagram of an OLED display device provided in an embodiment of the present application.
  • FIG. 4 is a cross-sectional view at C of the OLED display device in FIG. 3;
  • FIG. 5 is another cross-sectional view at C of the OLED display device in FIG. 3;
  • FIG. 6 is another schematic structural view of the OLED display device provided by the embodiment of the present application.
  • FIG. 7 is a cross-sectional view of the structure in FIG. 6 along the direction d.
  • the OLED (organic light emitting diode, organic light emitting diode) display device provided in the embodiment of the present application is applied to a common display terminal.
  • An OLED display device 001 currently used in the prior art is shown in FIG. 1 .
  • the OLED screen 01 is glued together with the middle frame 03 through the back glue 02, and at the same time, the caulking glue 04 is placed around the middle frame 03 to seal the gap between the OLED screen 01 and the middle frame 03.
  • the gaps are filled.
  • the back glue 02 and the caulking glue 04 are used between the OLED screen 01 and the middle frame 03 to realize waterproof sealing.
  • Fig. 2 is a cross-sectional view at C' in Fig. 1 .
  • a dispensing table S' for the caulking glue 04 needs to be designed on the middle frame 03 (schematically separated by dotted lines).
  • the dispensing station S' will cause the width of the black border on the head of the OLED screen 01 to be wider, which will affect the aesthetic effect of the whole machine; and limited by the dispensing process capability of the caulking glue 04, the position of the dispensing station S of the middle frame 03 is prone to glue overflow .
  • an embodiment of the present application provides an OLED display device, which is used to ensure the waterproof sealing of the OLED screen while reducing the black border of the OLED screen.
  • references to "one embodiment” or “some embodiments” or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically stated otherwise.
  • the terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless specifically stated otherwise.
  • FIG. 3 shows a structural diagram of an OLED display device provided by an embodiment of the present application.
  • the OLED display device 100 in FIG. 3 is shown in the form of a mobile phone, but it is not limited thereto, and may also be in other forms of display terminals such as a tablet, a notebook, and a smart wearable.
  • the OLED display device 100 provided by the embodiment of the present application includes a middle frame 1 and an OLED screen 2 .
  • the OLED display device 100 can be divided into a head area A and a tail area B, and the head area A and the tail area B are arranged along the direction d.
  • the OLED display device 100 Due to the structural characteristics of the OLED display device 100 , there are two corners A1 in the head region A, and two corners B1 in the tail region B. Certainly, the head area A and the tail area B are not limited to the parts shown in the figure, and they are only used as a schematic illustration here. Likewise, the corner A1 and the corner B1 are not limited to the parts shown in the figure, which are only for schematic illustration.
  • FIG. 4 is a cross-sectional view at point C of the OLED display device 100 in FIG. 3 .
  • the middle frame 1 includes a bottom plate 11 and side plates 12 located around the bottom plate 11 , and the middle frame 1 supports the OLED screen 2 through a supporting structure at least in the rear area B. It should be understood that here, in order to clearly illustrate the structure of the bottom plate 11 and the side plate 12 , they are schematically separated by dotted lines.
  • the OLED screen 2 includes a super clean film (super clean foam, SCF) 21 , a display layer 22 and an encapsulation cover 23 that are stacked.
  • SCF super clean film
  • the packaging cover plate 23 partially exceeds the display layer 22 and the ultra-clean film 21 to form protection for the display layer 22 and the ultra-clean film 21 .
  • the package cover 23 may be set as a glass cover as an example.
  • the display layer 22 may include a multi-layer optical film layer or a display structure of several layers, which are not shown here.
  • the ultra-clean film 21 acts as a buffer for the OLED screen 2 .
  • the OLED screen 2 in the OLED display device 100 provided by the embodiment of the present application may be a flat screen as shown in FIG. 3 , and of course, the OLED screen 2 may also be a curved screen.
  • the supporting structure on the middle frame 1 can be a dispensing station S' as shown in the prior art.
  • the support structure on the middle frame may be a support point formed by other parts of the middle frame 1 in the OLED display device 100 .
  • the ultra-clean film 21 and the bottom plate 11 are bonded by the adhesive 3.
  • the OLED screen 2 and the middle frame 1 are bonded by back glue 3.
  • the OLED display device 100 is also provided with a waterproof sealing structure for realizing the waterproof sealing effect between the OLED screen 2 and the middle frame 1 .
  • the design of the waterproof sealing structure is as follows: apply caulking glue 4 on the support structure, and realize the waterproof sealing of the middle frame 1 and OLED screen 2 in this part through the caulking glue 4; on the part of OLED screen 2 corresponding to head area A Apply the side sealant 5 so that the side surface of the ultra-clean film 21 and the display layer 22 and the side surface of the packaging cover 23 facing the bottom plate 11 are bonded and sealed with the side sealant 5, and the part of the OLED screen is sealed by the side sealant 5.
  • Side end face sealing a transition joint glue 6 is formed in each corner A1 of the head area A, so that the transition joint joint glue 6 is connected with the caulking glue 4 and the side sealant glue 5 .
  • the caulking glue 4 , the side sealing glue 5 and the transition glue 6 form a complete sealing structure on the peripheral side of the OLED screen 2 , thereby ensuring the waterproofness of the entire OLED display device 100 . It is worth noting that since the OLED display device 100 provided in the present application uses the side sealant 5 in conjunction with the gap filler 4 and the transition connection glue 6 to perform waterproof sealing, the corresponding part on the side plate 12 of the middle frame 1 can be canceled The supporting structure of the OLED screen 2 can effectively reduce the size of the black border of the OLED screen 2, thereby improving the overall aesthetics of the device.
  • the side sealant 5 in the OLED display device 100 provided by the embodiment of the present application is not limited to the position shown in FIG. It can also extend to the area between the head area A and the tail area B. Specifically, in a specific implementation that can be realized, the side sealant 5 can only extend to the area between the head area A and the tail area B on one side; in another specific implementation that can be realized, the side seal The glue 5 extends to the area between the head area A and the tail area B on both sides. As for the length of the side sealant 5 extending from the head region A, it can be set according to requirements, and will not be repeated here.
  • an avoidance gap may be provided between the package cover 23 and the side plate 12 .
  • the size of the avoidance gap between the package cover plate 23 and the side plate 12 in the direction d is L1.
  • the L1 is 0.1 mm.
  • the side sealant 5 when applied, it can be controlled to have a certain distance from the side sealant 5 to the edge of the package cover 23, so as to prevent the side sealant 5 from exceeding the edge of the package cover 23 and causing the package cover 23 and the side seal to occur during the assembly process. Interference occurs between board 1.
  • the distance between the side sealant 5 and the edge of the package cover 23 is L2. It should be noted that when applying the side sealant 5 , the thickness of the side sealant 5 in the direction d can be set as L3 according to requirements.
  • L2 and L3 are the dimensions of the packaging cover plate 23 protruding from the display layer 22 along the direction d.
  • the L2 can be set to 0.25 mm
  • the L3 can be set to 0.35 mm.
  • the size of the packaging cover plate 23 beyond the display layer 22 is 0.6 mm.
  • the black border of the OLED screen 2 includes not only the portion of the package cover 23 that exceeds the display layer 22 and the gap between the package cover 23 and the side panel 12, but also the non-display area where the OLED screen 2 does not play a display role. .
  • the OLED screen 2 includes a display area for displaying and a non-display area located around the display area.
  • the non-display area is the portion between the display area indicated by L4 and the edge of the display layer 22 .
  • the total width of the black borders of the OLED screen 2 in the OLED display device 100 provided by the present application is equal to the sum of the dimensions of L1, L2, L3 and L4.
  • the total width of the black border of the OLED screen 2 in the OLED display device 100 provided by the present application is 1.58mm.
  • the total width of the black border of the OLED display device 001 in the prior art is 2.08 mm.
  • the OLED display device 100 provided by the present application can effectively reduce the black border of the OLED screen 2 Size, which can improve the overall aesthetics of the device.
  • FIG. 6 is a schematic structural diagram of the OLED display device 100 provided by the embodiment of the present application without the OLED screen 2 .
  • the transition glue 6 includes a dam structure 61 and a potting glue 62 arranged at the corner A1 .
  • the dam structure 61 includes a first dam 611 and a second dam 612 , there is a gap between the first dam 611 and the second dam 612 , and the gap is filled with glue 62 .
  • the first dam 611 is connected to the side sealant 5 , the caulking compound 4 and the back glue 3 ;
  • the second dam 612 is located on the side of the first dam 611 away from the side sealant 5 Connect the sealant 4 and the adhesive 2.
  • the side sealant 5 can partially extend to fill the gap of the potting glue 62 to improve the sealing and waterproof performance of the OLED display device 100 provided by the embodiment of the present application.
  • the structures of the transition glue 6 in the two corners A1 can be set to be the same or similar.
  • the installation positions of the transition glue 6 in the two corners A1 can be arranged symmetrically with respect to the central axis of the OLED screen 2 in the direction d.
  • the transition glue 6 in the two corners A1 can also be approximately symmetrical or asymmetrical with respect to the central axis of the OLED screen 2 in the direction d according to requirements.
  • FIG. 7 is a cross-sectional view of the structure in FIG. 6 along the direction d.
  • the bottom plate 11 is provided with a glue hole E for filling the glue 62 at the portion corresponding to the glue 62 filling the gap.
  • the present application also provides a method for manufacturing an OLED display device, including:
  • the middle frame 1 and the OLED screen 2 are connected through the caulking glue 4 and the transition glue 6, so that the support structure of the side plate 12 at least corresponding to the tail area B is bonded to the OLED screen 2 through the caulking glue 4, and the middle frame 1 and the OLED screen 2 are bonded together.
  • Each corner A1 of the OLED screen 2 corresponding to the head area A is provided with a transition glue 6 through which the side sealant 5 and the gap filler 4 are connected. It is used to realize the overall sealing of the OLED display device 100 , thereby improving the waterproof performance of the OLED display device 100 .
  • glue is poured into the back of the middle frame 1 through the glue hole E to form the glue 62.
  • the glue 62 effectively glues the caulking glue 5, the dam structure 61 and the back glue 3 together to form an airtight waterproof airtight space. Therefore, the waterproof and sealing performance of the OLED display device 100 provided in the embodiment of the present application is improved.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种OLED显示装置及其制备方法、显示终端。该OLED显示装置包括中框和OLED屏，中框包括底板以及位于底板一侧的侧板，侧板至少在对应尾部区域部分设有用于支撑OLED屏的支撑结构；OLED屏包括层叠设置的超洁净膜、显示层和封装盖板，超洁净膜通过背胶与底板粘接；OLED屏至少在对应头部区域的部分设有侧封胶，侧封胶粘接超洁净膜的侧端面、显示层的侧端面以及封装盖板朝向底板一侧表面；OLED屏与支撑结构通过填缝胶粘接；OLED显示装置在头部区域内具有两个角部，在对应每个角部的位置中框和OLED屏间设有过渡连接胶，过渡连接胶连接侧封胶与填缝胶。该OLED显示装置可以在减小黑边的同时保证防水密封性。

Description

一种OLED显示装置及其制备方法、显示终端
相关申请的交叉引用
本申请要求在2021年05月17日提交中国专利局、申请号为202110535019.6、申请名称为“一种OLED显示装置及其制备方法、显示终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种OLED显示装置及其制备方法、显示终端。
背景技术
随着智能手机等终端设备的快速发展与普及，消费者对于手机等终端设备的需求不再局限于通话功能，对其美观性要求越来越高。例如手机等OLED(organic light emitting diode，有机发光二极管)显示装置所采用的OLED屏四周存在黑边，这严重影响OLED显示装置的美观性。基于此，缩小OLED屏四周的黑边就显得较为重要。
但是，一味的缩小OLED屏的黑边会导致成OLED屏密封不严，当OLED屏进液会导致功能严重失效。
因此，如何在减小OLED屏黑边的同时保证OLED屏的防水密封性是亟待解决的问题。
发明内容
本申请提供一种OLED显示装置及其制备方法、显示终端，可以在减小OLED屏黑边的同时保证OLED屏的防水密封性。
第一方面，本申请提供一种OLED(organic light emitting diode，有机发光二极管)显示装置，该OLED显示装置可以被划分为头部区域和尾部区域，头部区域具有两个角部。结合OLED显示装置的结构，具体来说，该OLED显示装置包括中框和OLED屏，其中，中框包括底板和设于底板一侧的侧板，中框的侧板至少在尾部区域内设有支撑结构，该支撑结构用于支撑OLED屏。OLED屏包括层叠设置的超洁净膜(super clean foam，SCF)、显示层和封装盖板，沿OLED屏的延伸方向，封装盖板部分超出显示层与超洁净膜，以形成对显示层与超洁净膜的防护；而超洁净膜起到对OLED屏的缓冲作用。在连接中框与OLED屏时，将OLED屏至少在对应头部区域的部分形成侧封胶，使得侧封胶粘接超洁净膜的侧端面、显示层的侧端面以及封装盖板朝向底板一侧表面，进行该部分OLED屏的侧端面密封；采用支撑结构上的填缝胶粘接OLED屏与中框，且进行该部分OLED屏的密封与固定；且在头部区域中每个角部内的形成过渡连接胶，使得过渡连接胶与填缝胶以及侧封胶连接，以在OLED屏的周侧形成完整密封结构。
本申请提供的OLED显示装置采用侧封胶配合填缝胶和过渡连接胶进行防水密封，可以在中框侧板上取消对应该部分OLED屏的支撑结构，从而可以有效缩小OLED屏的黑边尺寸，从而可以提升装置整体的美观性。同时，本申请提供的OLED显示装置通过侧封胶、 填缝胶以及过渡连接胶进行整机防水密封，可以保障并提升整体装置的防水性能。
在具体设置过渡连接胶的结构时，可以设置过渡连接胶包括围坝结构和灌胶，该围坝结构具体包括第一围坝和第二围坝，第二围坝与第一围坝间具有间隙。具体来说，第一围坝连接侧封胶、填缝胶以及背胶；第二围坝设于第一围坝靠近尾部区域一侧、且第二围坝连接填缝胶以及背胶，灌胶填充于间隙。值得注意的是，为了便于在间隙填充灌胶，可以在底板对应间隙的部分设置用于填充灌胶的灌胶孔。应理解，在具体设置时，可以仅设置一个角部的过渡连接胶为上述结构，也可以设置两个角部的过渡连接胶均为上述结构，具体可以根据需求设置，在此不再赘述。
在OLED屏上形成侧封胶结构时，可以控制封装盖板在底板的垂直投影覆盖侧封胶在底板的垂直投影。具体来说，一种可能的实现方式中，可以控制侧封胶距封装盖板的边缘具有一定间距，以免侧封胶超出封装盖板边缘、导致装配过程中发生封装盖板与侧板间发生干涉。另一种可能的实现方式中，可以控制侧封胶的涂抹量，使得侧封胶与封装盖板的侧边缘对齐。
在具体设置本申请提供的OLED显示装置时，为了避免装配时封装盖板与侧板间，可以设置沿封装盖板指向侧板方向，封装盖板与侧板间具有避让间隙。
第二方面，本申请提供一种显示终端，包括上述第一方面中技术方案提供的任意一种OLED显示装置。具体来说，本申请提供的显示终端内OLED显示装置采用侧封胶配合填缝胶和过渡连接胶进行防水密封，可以在中框侧板上取消对应该部分OLED屏的支撑结构，从而可以有效缩小OLED屏的黑边尺寸，从而可以提升装置整体的美观性。同时，本申请提供的OLED显示装置通过侧封胶、填缝胶以及过渡连接胶进行整机防水密封，可以保障并提升整体装置的防水性能。
第三方面，本申请提供一种OLED显示装置的制备方法，包括：
至少在OLED屏位于头部区域的侧端面涂抹侧封胶，使得侧封胶粘接OLED屏内层叠设置的超洁净膜的侧端面、显示层的侧端面以及封装盖板超出显示层的部分朝向底板一侧表面，用以密封OLED屏的侧端面；
在超洁净膜或者中框的底板涂抹背胶，使得OLED屏通过背胶粘接中框的底板；
通过填缝胶以及过渡连接胶连接中框和OLED屏，使得侧板至少在对应尾部区域的支撑结构与OLED屏通过填缝胶粘接，且使得中框与OLED屏在对应头部区域内的每个角部设有过渡连接胶，通过过渡连接胶连接侧封胶与填缝胶。用以实现OLED显示装置的整体密封，从而提升OLED显示装置的防水性能。
一种可能的实现方式中，通过过渡连接胶连接中框和OLED屏的方法包括：
在填充填缝胶之前，采用围坝胶点胶工艺，形成第一围坝和第二围坝，使得第二围坝与第一围坝间具有间隙，且使得第一围坝可以连接侧封胶、填缝胶以及背胶，第二围坝设于第一围坝靠近尾部区域一侧、且第二围坝连接填缝胶以及背胶；
在填充填缝胶之后，通过设于底板对应间隙位置的开孔，在间隙内填充灌胶，使得灌胶连接侧封胶、第一围坝、第二围坝、背胶以及填缝胶。
附图说明
图1为现有技术中所采用的OLED显示装置的结构图；
图2为图1中OLED显示装置在C’处的剖视图；
图3为本申请实施例提供的OLED显示装置的结构图；
图4为图3中OLED显示装置在C处剖视图；
图5为图3中OLED显示装置在C处又一种剖视图；
图6为本申请实施例提供的OLED显示装置的又一结构示意图；
图7为图6中结构沿方向d的剖视图。
具体实施方式
本申请实施例提供的OLED(organic light emitting diode，有机发光二极管)显示装置应用于常见的显示终端。目前现有技术中所采用的OLED显示装置001如图1所示。如图1所示出的结构，OLED屏01通过背胶02与中框03粘接在一起，同时在中框03四周点填缝胶04，用以将OLED屏01与中框03之间的间隙填充满。该OLED显示装置001中OLED屏01与中框03之间采用背胶02和填缝胶04实现防水密封。
图2为图1中C’处的剖视图。如图2所示出的结构，为了点填缝胶04，在中框03上需设计填缝胶04的点胶台S’(以虚线进行示意性分隔)。而点胶台S’会导致OLED屏01头部黑边宽度较宽，影响整机美观效果；且受限于填缝胶04点胶制程能力，中框03点胶台S位置易产生溢胶。
如图1和图2示出的结构，现有技术中的OLED显示装置001在保证OLED屏的防水性能时，就会造成OLED屏01四周存在黑边，严重影响OLED显示装置001的美观性。而当一味的追求缩小OLED屏01的黑边，又会导致OLED屏01密封不严。值得注意的是，OLED屏01进液会导致功能严重失效。因此OLED屏的防水设计也至关重要。
有鉴于此，本申请实施例提供一种OLED显示装置，用以在减小OLED屏黑边的同时保证OLED屏的防水密封性。
以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
图3示出了本申请实施例提供的OLED显示装置的结构图。应理解，图3中OLED显示装置100以手机形态示出，但并不限于此，还可为平板、笔记本、智能穿戴等其它显示终端形式。具体来说，如图3所示出的结构，本申请实施例提供的OLED显示装置100包括中框1和OLED屏2。这里介绍一下，按照使用惯例，OLED显示装置100可以划分为 头部区域A和尾部区域B，该头部区域A与尾部区域B沿方向d排列。由于OLED显示装置100的结构特点，头部区域A内具有两个角部A1，尾部区域B内也具有两个角部B1。当然，头部区域A与尾部区域B并不限于图中所示出的部分，此处仅作为示意性说明。同样的，角部A1与角部B1并不限于图中所示出的部分，此处仅作为示意性说明。
图4为图3中OLED显示装置100在C处剖视图。如图4所示出的结构，中框1包括底板11以及位于底板11周侧的侧板12，中框1通过至少位于尾部区域B内的支撑结构支撑OLED屏2。应理解，此处为了清晰的示意出底板11与侧板12的结构，以虚线进行示意性分隔。OLED屏2包括层叠设置的超洁净膜(super clean foam，SCF)21、显示层22和封装盖板23。沿OLED屏2的延伸方向，封装盖板23部分超出显示层22与超洁净膜21，以形成对显示层22与超洁净膜21的防护。应理解，该封装盖板23示例性的可以设置为玻璃盖板。显示层22可以包括多层光学膜层或者若干层显示结构，此处未示出。超洁净膜21起到对OLED屏2的缓冲作用。
值得注意的是，本申请实施例提供的OLED显示装置100内的OLED屏2可以为如图3所示出的平面屏，当然该OLED屏2还可以是曲屏。当OLED屏2为平面屏时，中框1上的支撑结构可以为如现有技术中所示出的点胶台S’。当OLED屏2为曲屏时，中框上的支撑结构可以为OLED显示装置100内中框1的其它部分形成的支撑点。
请结合图3所示出的结构参考图4，本申请实施例提供的OLED显示装置100中，超洁净膜21与底板11间通过背胶3粘接，换句话说，OLED屏2与中框1之间通过背胶3粘接。值得注意的是，该OLED显示装置100内还设有用于实现OLED屏2与中框1间防水密封效果的防水密封结构。
该防水密封结构设计具体如下：在支撑结构上点涂填缝胶4，通过填缝胶4实现中框1与OLED屏2在该部分的防水密封；在OLED屏2对应头部区域A的部分点涂侧封胶5，使得超洁净膜21与显示层22的侧端面以及封装盖板23朝向底板11的一侧面采用侧封胶5粘接密封，通过侧封胶5实现该部分OLED屏的侧端面密封；在头部区域A中每个角部A1内形成过渡连接胶6，使得过渡连接胶6与填缝胶4以及侧封胶5连接。
该填缝胶4、侧封胶5以及过渡连接胶6在OLED屏2的周侧形成完整密封结构，从而可以整个OLED显示装置100的防水性。值得注意的是，由于本申请提供的OLED显示装置100中采用侧封胶5配合填缝胶4和过渡连接胶6可以进行防水密封，因而可以在中框1的侧板12上取消对应该部分OLED屏2的支撑结构，从而可以有效缩小OLED屏2的黑边尺寸，从而可以提升装置整体的美观性。
当然，本申请实施例提供的OLED显示装置100中侧封胶5并不限于图3中所设置的位置，当想缩小头部区域A与尾部区域B之间的黑边时，侧封胶5还可延伸至头部区域A与尾部区域B之间的区域。具体来说，一种可以实现的具体实施方式中，侧封胶5可仅单侧延伸至头部区域A与尾部区域B之间的区域；另一种可以实现的具体实施方式中，侧封胶5双侧均延伸至头部区域A与尾部区域B之间的区域。至于侧封胶5自头部区域A延伸出的长度可以根据需求设定，在此不再赘述。
为了避免装配过程中，封装盖板23与侧板12间出现干涉，可以设置封装盖板23与侧板12间具有避让间隙。如图4所示出的结构，封装盖板23与侧板12在方向d上的避让间隙尺寸为L1。示例性的，该L1为0.1mm。
同时，在涂抹侧封胶5时，可以控制侧封胶5距封装盖板23的边缘具有一定间距， 以免侧封胶5超出封装盖板23边缘、导致装配过程中发生封装盖板23与侧板1间发生干涉。示例性的，请继续参考图4所示出的结构，沿方向d，侧封胶5与封装盖板23边缘间间距的尺寸为L2。值得注意的是，在涂抹侧封胶5时，可以按照需求设定侧封胶5在方向d上的尺寸厚度为L3。
应理解，L2与L3的尺寸之和即为封装盖板23沿方向d超出显示层22的尺寸。示例性的，该L2可以设置为0.25mm，L3可以设置为0.35mm，此时封装盖板23超出显示层22的尺寸为0.6mm。
当然，还可以在涂抹侧封胶5时，控制侧封胶5的涂抹量，使得侧封胶5与封装盖板23的侧边缘对齐，设置L2的值为0，具体如图5所示出的结构。
值得注意的是，OLED屏2的黑边除了包括封装盖板23超出显示层22的部分以及封装盖板23与侧板12之间的缝隙，还包括OLED屏2未发挥显示作用的非显示区域。具体来说，OLED屏2包括用于进行显示的显示区域以及位于显示区域周侧的非显示区域。如图5所示出的结构，非显示区域即为L4所示意的显示区域与显示层22边缘间部分。
总的来说，本申请提供的OLED显示装置100内OLED屏2的黑边总宽度等于L1、L2、L3以及L4尺寸之和。示例性的，当设置L1为0.1mm，L2为0.25mm，L3为0.35mm，L4为0.88mm时，本申请提供的OLED显示装置100内OLED屏2的黑边总宽度即为1.58mm。如图2所示出的现有技术中的OLED显示装置001的黑边总宽度为2.08mm，相比该现有技术，本申请提供的OLED显示装置100中可以有效缩小OLED屏2的黑边尺寸，从而可以提升装置整体的美观性。
图6为本申请实施例提供的OLED显示装置100去除OLED屏2后的结构示意图。如图6所示出的结构，以一个角部A1为例，过渡连接胶6包括设于角部A1的围坝结构61和灌胶62。该围坝结构61包括第一围坝611和第二围坝612，第一围坝611与第二围坝612间具有间隙，该间隙内填充有灌胶62。具体来说，第一围坝611连接侧封胶5、填缝胶4以及背胶3；第二围坝612设于第一围坝611远离侧封胶5一侧、且第二围坝612连接填缝胶4以及背胶2。值得注意的是，侧封胶5可部分延伸至填充灌胶62的间隙，以提升本申请实施例提供的OLED显示装置100的密封防水性能。
当然，在具体设置两个角部A1内的过渡连接胶6结构时，可以设置两个角部A1内的过渡连接胶6结构相同或相似。同样的，两个角部A1内的过渡连接胶6设置位置可以关于OLED屏2在方向d上的中轴线对称设置。或者，两个角部A1内的过渡连接胶6也可以根据需求关于OLED屏2在方向d上的中轴线近似对称或者不对称。
图7为图6中结构沿方向d的剖视图。如图7所示出的结构，底板11在对应灌胶62填充间隙的部分设有用于填充该灌胶62的灌胶孔E。
请结合图6参考图7中所示出的结构，本申请还提供一种OLED显示装置的制备方法，包括：
至少在OLED屏2位于头部区域A的侧端面涂抹侧封胶5，使得侧封胶5粘接OLED屏2内层叠设置的超洁净膜21的侧端面、显示层22的侧端面以及封装盖板23超出显示层22的部分朝向底板11一侧表面，用以密封OLED屏2的侧端面；
在超洁净膜21或者中框1的底板11涂抹背胶3，使得OLED屏2通过背胶3粘接中框1的底板11；
通过填缝胶4以及过渡连接胶6连接中框1和OLED屏2，使得侧板12至少在对应尾 部区域B的支撑结构与OLED屏2通过填缝胶4粘接，且使得中框1与OLED屏2在对应头部区域A内的每个角部A1设有过渡连接胶6，通过过渡连接胶6连接侧封胶5与填缝胶4。用以实现OLED显示装置100的整体密封，从而提升OLED显示装置100的防水性能。
现提供一种制备本申请实施例提供的OLED显示装置100的具体操作流程，示例性如下：
在中框1的灌胶孔E两侧点围坝胶形成围坝结构61，以防止填充灌胶62时发生溢胶；在中框1处头部区域A之外部分点填缝胶4。
接着，将头部已点好侧封胶5的OLED屏2组装到中框1上，使得第一围坝611连接侧封胶5、填缝胶4以及背胶3，同时，第二围坝612连接填缝胶4以及背胶2。
最后，在中框1背面通过灌胶孔E灌入胶水形成灌胶62，灌胶62将填缝胶5、围坝结构61以及背胶3有效粘胶在一起，形成密闭的防水密封空间，从而提升本申请实施例提供的OLED显示装置100的防水密封性能。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (9)

  1. 一种OLED显示装置，所述OLED显示装置具有头部区域和尾部区域，其特征在于，所述OLED显示装置包括:中框和OLED屏，其中：
    所述中框包括底板以及位于所述底板一侧的侧板，所述侧板至少在对应所述尾部区域部分设有用于支撑所述OLED屏的支撑结构；
    所述OLED屏包括层叠设置的超洁净膜、显示层和封装盖板，所述超洁净膜通过背胶与所述底板粘接；沿所述OLED屏的延伸方向，所述封装盖板超出所述显示层；所述OLED屏至少在对应所述头部区域的部分设有侧封胶，所述侧封胶粘接所述超洁净膜的侧端面、所述显示层的侧端面以及所述封装盖板朝向所述底板一侧表面；所述OLED屏与所述支撑结构通过填缝胶粘接；
    所述OLED显示装置在所述头部区域内具有两个角部，在对应每个所述角部的位置：所述中框和OLED屏间设有过渡连接胶，所述过渡连接胶连接所述侧封胶与所述填缝胶。
  2. 如权利要求1所述的OLED显示装置，其特征在于，至少一个所述角部内的所述过渡连接胶包括围坝结构和灌胶，所述围坝结构包括第一围坝和第二围坝，所述第二围坝与所述第一围坝间具有间隙；所述第一围坝连接所述侧封胶、填缝胶以及所述背胶；所述第二围坝设于所述第一围坝靠近所述尾部区域一侧、且所述第二围坝连接所述填缝胶以及所述背胶；所述灌胶填充于所述间隙。
  3. 如权利要求2所述的OLED显示装置，其特征在于，所述底板在对应所述间隙的部分设有用于填充所述灌胶的灌胶孔。
  4. 如权利要求1-3任一项所述的OLED显示装置，其特征在于，所述封装盖板在所述底板的垂直投影覆盖所述侧封胶在所述底板的垂直投影。
  5. 如权利要求4所述的OLED显示装置，其特征在于，沿所述封装盖板的延伸方向，所述侧封胶与所述封装盖板的边缘间具有间距。
  6. 如权利要求1-5任一项所述的OLED显示装置，其特征在于，沿所述封装盖板指向所述侧板方向，所述封装盖板与所述侧板间具有避让间隙。
  7. 一种显示终端，其特征在于，包括如权利要求1-6任一项所述的OLED显示装置。
  8. 一种OLED显示装置的制备方法，其特征在于，包括：
    至少在OLED屏位于头部区域的侧端面涂抹侧封胶，使得所述侧封胶粘接所述OLED屏内层叠设置的超洁净膜的侧端面、显示层的侧端面以及封装盖板超出所述显示层的部分朝向底板一侧表面，用以密封所述OLED屏的侧端面；
    在所述OLED屏内的超洁净膜或者中框的底板涂抹背胶，使得所述OLED屏通过所述背胶粘接所述中框的底板；
    通过填缝胶以及过渡连接胶连接所述中框和所述OLED屏，使得所述中框的侧板至少在对应尾部区域的支撑结构与所述OLED屏通过所述填缝胶粘接，且使得所述中框与所述OLED屏在对应所述头部区域内的每个角部部分设有过渡连接胶，使得所述过渡连接胶连接所述侧封胶与所述填缝胶。
  9. 如权利要求8所述的制备方法，其特征在于，所述通过所述过渡连接胶连接所述中框和所述OLED屏的方法包括：
    在填充所述填缝胶之前，采用围坝胶点胶工艺，形成第一围坝和第二围坝，使得所述 第二围坝与所述第一围坝间具有间隙，且使得所述第一围坝可以连接所述侧封胶、填缝胶以及所述背胶，所述第二围坝设于所述第一围坝靠近尾部区域一侧、且所述第二围坝连接所述填缝胶以及所述背胶；
    在填充所述填缝胶之后，通过设于所述底板对应所述间隙位置的开孔，在所述间隙内填充灌胶，使得所述灌胶连接所述侧封胶、第一围坝、第二围坝、所述背胶以及所述填缝胶。
PCT/CN2022/084108 2021-05-17 2022-03-30 一种oled显示装置及其制备方法、显示终端 WO2022242329A1 (zh)

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