WO2018176703A1 - 显示模组封装结构及显示装置 - Google Patents

显示模组封装结构及显示装置 Download PDF

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Publication number
WO2018176703A1
WO2018176703A1 PCT/CN2017/094554 CN2017094554W WO2018176703A1 WO 2018176703 A1 WO2018176703 A1 WO 2018176703A1 CN 2017094554 W CN2017094554 W CN 2017094554W WO 2018176703 A1 WO2018176703 A1 WO 2018176703A1
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WO
WIPO (PCT)
Prior art keywords
package substrate
protective cover
stress absorbing
absorbing adhesive
display module
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/CN2017/094554
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English (en)
French (fr)
Inventor
简重光
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.)
HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
Original Assignee
HKC Co Ltd
Chongqing HKC 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 HKC Co Ltd, Chongqing HKC Optoelectronics Technology Co Ltd filed Critical HKC Co Ltd
Priority to US15/740,350 priority Critical patent/US20200033661A1/en
Publication of WO2018176703A1 publication Critical patent/WO2018176703A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0271—Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W42/00—Arrangements for protection of devices
    • H10W42/121—Arrangements for protection of devices protecting against mechanical damage
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/503—Arrangements improving the resistance to shock

Definitions

  • the present disclosure relates to a display module package structure and a display device.
  • the flat display device has the advantages of light weight, thin thickness and power saving.
  • the flat display device includes a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED), and the like.
  • LCD liquid crystal display
  • PDP plasma display panel
  • OLED organic light emitting diode
  • the substrate When the external temperature changes, the substrate is likely to warp, and the substrate is easily separated from the display panel, causing damage to the display panel.
  • the present disclosure provides a display module package structure and a display device to solve the problem that the substrate is easily warped and damages the display panel.
  • the present disclosure provides a display module package structure, including:
  • a stress absorbing adhesive between the package substrate and the protective cover and located at an edge of the display panel, the stress absorbing adhesive is applied to the package substrate and the protective cover, and the stress absorbing adhesive is disposed To absorb thermal stress.
  • the present disclosure further provides a display device, including the display module package structure of the first aspect.
  • the present disclosure further provides another display device, including:
  • the protective cover is connected to the package substrate through a stress absorbing adhesive for sealing a space between the package substrate and the protective cover, and the display panel is located within the space.
  • the stress absorbing adhesive is arranged to absorb thermal stress when the temperature changes.
  • the display module package structure and the display device provided by the embodiment of the present disclosure include a package substrate, a display panel, a protective cover, and a stress absorbing adhesive between the package substrate and the protective cover and located at the periphery of the display panel.
  • the package substrate and the protective cover are adhered by the stress absorbing adhesive, and the thermal stress generated when the external temperature changes by the package substrate and the protective cover is absorbed by the stress absorbing adhesive, thereby avoiding the package substrate and the protective cover when the external temperature changes.
  • the warpage and separation phenomenon caused by the difference in thermal expansion coefficient of the board improves the packaging effect of the display module.
  • FIG. 1 is a schematic structural diagram of a display module package structure according to an embodiment of the present disclosure
  • Figure 2 is a schematic view showing the stress absorption stress of the stress absorbing adhesive at the position A of the broken line in Figure 1;
  • Figure 3 is a schematic view showing the heat transfer of the stress absorbing adhesive at the position A of the broken line in Figure 1;
  • FIG. 4 is a schematic structural diagram of another display module package structure according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of still another display module package structure according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a display device according to an embodiment of the present disclosure.
  • the display module package structure may include: a package substrate 10; a display panel 20 on the package substrate 10; a protective cover 30 on the display panel 20 away from the package substrate 10; and a package substrate
  • the stress absorbing adhesive 40 between the cover panel 30 and the periphery of the display panel 20 is located.
  • the stress absorbing adhesive 40 adheres to the package substrate 10 and the protective cover 30, and absorbs thermal stress generated when the package substrate 10 and the protective cover 30 are changed in external temperature.
  • the materials of the package substrate 10 and the protective cover 30 may be the same or different.
  • the embodiments of the present disclosure are described by taking different materials of the package cover 10 and the protective cover 30 as an example.
  • the material of the package substrate 10 may be plastic. It should be noted that the present disclosure does not limit the thickness of the package substrate 10, and only needs to satisfy the normal package function.
  • the display panel 20 is located on the package substrate 10.
  • the display panel 20 in the embodiment of the present disclosure may be a liquid crystal display panel or an organic light emitting display panel.
  • the display panel is described as an example.
  • the liquid crystal display panel may include an array substrate, a color filter substrate, and a liquid crystal layer sandwiched between the array substrate and the color filter substrate (not shown in the drawing) ).
  • the length of the display panel 20 in the horizontal direction is smaller than the length of the package substrate 10 in the horizontal direction, and the display panel 20 may be located at a central area of the package substrate 10 .
  • the protective cover 30 is located on a side of the display panel 20 away from the package substrate 10.
  • the protective cover 30 is disposed to protect the display panel 20 to ensure the normal display function of the display panel 20.
  • the material of the protective cover 30 may be glass, such as transparent glass, to ensure that the display image of the display panel 20 can be clearly seen by the user.
  • the display panel 20 is a display touch panel, and the thickness of the protective cover 30 is less than a predetermined thickness, so as to ensure that the normal touch use of the display touch panel is not affected by the user.
  • the length of the protective cover 30 in the horizontal direction may be the same as the length of the package substrate 10 .
  • the stress absorbing adhesive 40 is located between the package substrate 10 and the protective cover 30 and located at the peripheral edge of the display panel 20. As shown in FIG. 1 , the stress absorbing adhesive 40 is located between the package substrate 10 and the protective cover 30 , and is attached to the package substrate 10 and the protective cover 30 .
  • the package substrate 10 and the protective cover 30 expand or contract in volume when the ambient temperature changes, and thermal stress generated by the package substrate 10 and the protective cover 30.
  • the stress absorbing adhesive 40 provided by the embodiment of the present disclosure is capable of absorbing thermal stress generated when the package substrate 10 and the protective cover 30 are changed in external temperature, thereby preventing the package substrate 10 and the protective cover 30 from warping or separating.
  • Figure 2 is a schematic illustration of the stress absorption stress absorption stress at the position A of the broken line in Figure 1.
  • the stress absorbing adhesive 40 can absorb the thermal stress generated by the package substrate 10 and the protective cover 30, and the stress absorbing adhesive 40 can also release part of the stress, ensuring that the stress absorbing adhesive 40 does not deform or the deformation amount is relatively small. small.
  • the stress absorbing adhesive 40 is insensitive to temperature changes and stress absorption occurs when temperature changes.
  • the deformation of the glue 40 is small or does not deform.
  • the stress absorbing adhesive 40 can also withstand high temperature or low temperature, and the performance does not change or change little in a high temperature environment or a low temperature environment.
  • the stress absorbing adhesive 40 comprises at least one of the following materials: epoxy resin, acrylic glue, vinyl ether resin, and acrylate resin.
  • the stress absorbing adhesive 40 is a heat conductive adhesive.
  • the stress absorbing adhesive 40 keeps the package substrate 10, the protective cover 30 and the stress absorbing adhesive 40 in a thermal equilibrium state, thereby avoiding The temperature of the package substrate 10 or the protective cover 30 changes too fast.
  • the material of the package substrate 10 and the protective cover 30 are different, for example, the material of the package substrate 10 is plastic, the material of the protective cover 30 is glass, and the specific heat capacity of the package substrate 10 and the protective cover 30 are different, and therefore, when the external environment occurs When the temperature changes, the temperature difference between the package substrate 10 and the protective cover 30 is different.
  • the stress absorbing adhesive 40 can also conduct heat between the package substrate 10 and the protective cover 30, and the package substrate 10 and the protective cover 30 and the stress are maintained.
  • the absorbent gel 40 is in thermal equilibrium, as shown in FIG.
  • the stress absorbing adhesive 40 is further configured to absorb the mechanical stress generated by the package substrate 10 and the protective cover 30 when the external environment changes, such as the compressive stress absorbed by the package substrate 10 or the protective cover 30 during handling or transportation. It is ensured that the package substrate 10 and the protective cover 30 are not damaged.
  • the display module package structure of the embodiment of the present disclosure includes a package substrate, a display panel, a protective cover, and a stress absorbing adhesive between the package substrate and the protective cover and located at the periphery of the display panel.
  • the stress absorbing adhesive adheres to the package substrate and the protective cover plate, and absorbs thermal stress generated when the external temperature changes of the package substrate and the protective cover plate, so as to prevent the package substrate and the protective cover plate from being different due to different thermal expansion coefficients when the external temperature changes.
  • the warping and separation phenomenon improves the packaging effect of the display module; and the stress absorbing adhesive also keeps the package substrate, the protective cover and the stress absorbing adhesive in a thermal equilibrium state, and avoids damage to the display panel caused by excessive temperature of a certain substrate.
  • FIG. 4 is a schematic structural diagram of another display module package structure according to an embodiment of the present disclosure.
  • the package structure of the display module may include: a package substrate 10; a display panel 20 on the package substrate 10; a protective cover 30 on the display panel 20 away from the package substrate 10; and a package substrate
  • the stress absorbing adhesive 40 between the cover panel 30 and the periphery of the display panel 20 is located.
  • the stress absorbing adhesive 40 adheres to the package substrate 10 and the protective cover 30, and absorbs thermal stress generated when the package substrate 10 and the protective cover 30 are changed in external temperature.
  • a plurality of honeycomb holes 401 are provided in the stress absorbing adhesive 40, and the holes 401 are used to dissipate heat generated by the display panel 20.
  • a plurality of honeycomb holes 401 are disposed in the stress absorbing adhesive 40, and heat generated during operation of the display panel 20 can be dissipated through the holes 401 to prevent the display panel 20 from being displayed due to excessive temperature.
  • the display quality of the panel 20 can also increase the useful life of the display panel 20.
  • the display module package structure provided by the embodiment of the present disclosure has a stress absorbing adhesive disposed between the package substrate and the protective cover plate, and a hole is formed in the stress absorbing adhesive, and the package substrate and the protection can be adhered not only by the stress absorbing adhesive.
  • the cover plate absorbs the thermal stress generated by the external temperature change of the package substrate and the protective cover plate through the stress absorbing adhesive, and prevents the warpage and separation phenomenon of the package substrate and the protective cover plate due to different thermal expansion coefficients when the external temperature changes.
  • the package effect of the display module is improved; and the heat generated during the working process of the display panel can be dissipated through the holes provided in the stress absorbing adhesive, the display command of the display panel is ensured, and the service life of the display panel is improved.
  • FIG. 5 is a schematic structural diagram of still another display module package structure according to an embodiment of the present disclosure.
  • the package structure of the display module may include: a package substrate 10; a display panel 20 on the package substrate 10; a protective cover 30 on the side of the display panel 20 away from the package substrate 10;
  • the stress absorbing adhesive 40 is disposed between the protective cover 30 and at the periphery of the display panel 20.
  • the stress absorbing adhesive 40 is attached to the package substrate 10 and the protective cover 30, and absorbs the package substrate 10 and the protective cover 30. Thermal stress generated when the external temperature changes;
  • An adhesive layer 50 is disposed on a side of the package substrate 10 and/or the protective cover 30 facing the stress absorbing adhesive 40, and the adhesive layer 50 is disposed corresponding to the stress absorbing adhesive 40.
  • a first adhesive layer 501 is disposed between the package substrate 10 and the stress absorbing adhesive 40, and a second adhesive layer 502 is disposed between the protective cover 30 and the stress absorbing adhesive 40.
  • a first adhesive layer 501 is disposed on a side of the package substrate 10 facing the stress absorbing adhesive 40
  • a second adhesive layer 502 is disposed on a side of the protective cover 30 facing the stress absorbing adhesive 40.
  • the layer 501 and the second adhesive layer 502 are disposed at positions corresponding to the stress absorbing adhesive 40, and the adhesion between the package substrate 10 and the stress absorbing adhesive 40 and the adhesion of the cover sheet 30 to the stress absorbing adhesive 40 can be enhanced.
  • the warping phenomenon or the separation phenomenon of the package substrate 10 and the protective cover 30 occur mostly at the edge position.
  • the adhesive layer 50 can improve the packaging performance of the display module, avoid warpage or separation of the package substrate 10 and/or the protective cover 30, or reduce warpage or separation of the substrate 10 and/or the protective cover 30. The possibility to improve the package quality of the display module.
  • the adhesive layer 50 is a roughened layer, which can improve the bonding strength between the package substrate 10, the protective cover 30 and the stress absorbing adhesive 40, and further improve the packaging performance of the display module.
  • the roughening layer may be formed by adding a roughening layer between the package substrate 10, the protective cover 30 and the stress absorbing adhesive 40, and may also pass through the package substrate 10 and the protective cover 30 and the stress absorbing adhesive 40. The corresponding position is roughened to form a roughened layer.
  • the manner of forming the roughened layer is not limited, and only a rough layer is formed between the package substrate 10, the protective cover 30 and the stress absorbing adhesive 40. The bonding strength of the package substrate 10, the protective cover 30 and the stress absorbing adhesive 40 is improved, and the packaging performance of the display module can be further improved.
  • the display module package structure of the embodiment of the present disclosure includes a package substrate, a display panel, a protective cover, a stress absorbing adhesive on the package substrate and located at the periphery of the display panel, and a seal.
  • a high-viscosity layer on the side of the substrate and/or the protective cover facing the stress-absorbing adhesive.
  • the high-viscosity layer is disposed corresponding to the stress-absorbing adhesive, and the high-viscosity is used to improve the adhesion of the stress-absorbing adhesive to the package substrate and the protective cover.
  • the performance further improves the packaging performance of the display module, avoids or reduces the warpage and separation of the package substrate and/or the protective cover, and improves the package quality of the display module.
  • FIG. 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
  • the display device includes the display module package structure 1 described in the above embodiments.
  • the display device may be a smart device such as a mobile phone.

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  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示模组封装结构（1）及显示装置。显示模组封装结构（1）包括：封装基板（10）；位于封装基板（10）上的显示面板（20）；以及通过应力吸收胶（40）和封装基板（10）连接保护盖板（30）。封装基板（10）、应力吸收胶（40）和保护盖板（30）密封出一个空间，空间位于封装基板（10）和保护盖板（30）之间，显示面板（20）位于空间之内，其中，在温度变化时，应力吸收胶（40）设置为吸收热应力。

Description

显示模组封装结构及显示装置 技术领域
本公开涉及一种显示模组封装结构及显示装置。
背景技术
近年来，随着平面显示技术的进步，平面显示装置已经逐渐取代传统的阴极射线管(cathode raytube，CRT)显示装置。平面显示装置具有重量轻、厚度薄及省电等优势。
平面显示装置包括液晶显示装置(liquid crystal display，LCD)、等离子显示装置(plasma display panel，PDP)，有机发光显示装置(Organic Light Emitting Diode，OLED)等。这些平面显示装置的显示面板上、下表面贴覆基板，基板作为显示面板的保护板。
当外界温度变化时，基板容易发生翘曲，基板容易与显示面板分离，对显示面板造成损伤。
发明内容
有鉴于此，本公开提供一种显示模组封装结构及显示装置，以解决基板容易翘曲，损伤显示面板的问题。
第一方面，本公开提供了一种显示模组封装结构，包括：
封装基板；
位于所述封装基板上的显示面板；
位于所述显示面板上的保护盖板；
位于所述封装基板与所述保护盖板之间且位于所述显示面板四周边缘的应力吸收胶，所述应力吸收胶贴合所述封装基板和所述保护盖板，所述应力吸收胶设置为吸收热应力。
第二方面，本公开还提供了一种显示装置，包括第一方面所述的显示模组封装结构。
第三方面，本公开还提供另一种显示装置，包括：
封装基板；
显示面板，位于所述封装基板上；
保护盖板，通过应力吸收胶和所述封装基板连接，用以密封一个空间，所述空间位于所述封装基板和所述保护盖板之间，所述显示面板位于所述空间之内。
其中，在温度变化时，所述应力吸收胶设置为吸收热应力。
本公开实施例提供的显示模组封装结构及显示装置，显示模组封装结构包括封装基板、显示面板、保护盖板以及位于封装基板与保护盖板之间且位于显示面板四周边缘的应力吸收胶，通过应力吸收胶贴合封装基板和保护盖板，并且通过应力吸收胶吸收封装基板和保护盖板在外部温度发生变化时产生的热应力，避免当外界温度发生变化时，封装基板和保护盖板因热膨胀系数不同造成的翘曲、分离现象，提升显示模组的封装效果。
附图说明
下面将通过参照附图详细描述本公开的示例性实施例，使本领域的普通技术人员更清楚本公开的上述及其他特征。
图1是本公开实施例提供的一种显示模组封装结构的结构示意图；
图2是图1中虚线位置A处应力吸收胶吸收应力的示意图；
图3是图1中虚线位置A处应力吸收胶传导热量的示意图；
图4是本公开实施例提供的另一种显示模组封装结构的结构示意图；
图5是本公开实施例提供的又一种显示模组封装结构的结构示意图；
图6是本公开实施例提供的一种显示装置的示意图。
具体实施方式
下面结合附图并通过具体实施方式来说明本公开的技术方案。此处所描述的实施例仅仅用于解释本公开，而非对本公开的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本公开相关的部分而非全部结构。在不冲突的情况下，以下实施例以及实施例中的特征可以任意相互组合。
图1是本公开提供的显示模组封装结构的结构示意图。如图1所示，该显示模组封装结构可以包括：封装基板10；位于封装基板10上的显示面板20；位于显示面板20上远离封装基板10一侧的保护盖板30；以及位于封装基板10与保护盖板30之间且位于显示面板20四周边缘的应力吸收胶40。应力吸收胶40贴合封装基板10和保护盖板30，并且吸收封装基板10和保护盖板30在外部温度发生变化时产生的热应力。
示例性的，封装基板10和保护盖板30的材质可以相同，也可以不同。本公开实施例以封装盖板10和保护盖板30的材质不同为例进行说明。可选的，封装基板10的材质可以为塑料。需要说明的是，本公开对封装基板10的厚度不进行限定，只需满足正常的封装功能即可。
显示面板20位于封装基板10上，本公开实施例中的显示面板20可以为液晶显示面板，也可以为有机发光显示面板，本公开实施例以显示面板20为液晶 显示面板为例进行说明。可选的，当显示面板20为液晶显示面板时，所述液晶显示面板可以包括阵列基板、彩膜基板以及夹持于所述阵列基板和彩膜基板之间的液晶层(图中未示出)。可选的，如图1所示，显示面板20在水平方向上的长度小于封装基板10在水平方向上的长度，并且，显示面板20可以位于封装基板10的中心区域。
保护盖板30位于显示面板20上远离封装基板10的一侧，保护盖板30设置为对显示面板20进行保护封装，保证显示面板20的正常显示功能。可选的，保护盖板30的材质可以为玻璃，例如透明玻璃，保证用户可以看清楚显示面板20的显示图像。可选的，显示面板20为显示触控面板，保护盖板30的厚度小于预定厚度，保证不影响用户对显示触控面板的正常触控使用。
可选的，如图1所示，保护盖板30在水平方向上的长度可以与封装基板10的长度相同。
应力吸收胶40位于封装基板10与保护盖板30之间且位于显示面板20的四周边缘。如图1所示，应力吸收胶40位于封装基板10和保护盖板30之间，贴合封装基板10和保护盖板30。
封装基板10和保护盖板30在外界环境温度变化时体积膨胀或者收缩，封装基板10和保护盖板30产生的热应力。本公开实施例提供的应力吸收胶40能够吸收封装基板10和保护盖板30在外部温度发生变化时产生的热应力，从而避免封装基板10和保护盖板30翘曲或者分离。图2是图1中虚线位置A处应力吸收胶吸收应力的示意图。当外界环境温度升高时，应力吸收胶40可以吸收封装基板10和保护盖板30产生的热应力，并且应力吸收胶40还可以释放部分应力，保证应力吸收胶40不发生形变或者形变量较小。
可选的，应力吸收胶40对温度变化不敏感，在温度发生变化时，应力吸收 胶40的形变较小或者不发生形变。并且，应力吸收胶40还可以耐高温或者耐低温，在高温环境或者低温环境下性能不发生改变或者改变很小。可选的，应力吸收胶40包括下述材料中的至少一种：环氧树脂、亚克力胶、乙烯基醚类树脂和丙烯酸酯类树脂。
可选的，应力吸收胶40为一种热传导胶，当显示模组封装结构的外部温度发生变化时，应力吸收胶40保持封装基板10、保护盖板30和应力吸收胶40处于热平衡状态，避免封装基板10或者保护盖板30温度变化过快。当封装基板10与保护盖板30的材质不同时，例如封装基板10的材质为塑料，保护盖板30的材质为玻璃，封装基板10与保护盖板30的比热容不同，因此，当外界环境发生变化时，封装基板10和保护盖板30的温度变化不同，此时，应力吸收胶40还可以在封装基板10和保护盖板30之间进行热传导，保持封装基板10和保护盖板30以及应力吸收胶40三者处于热平衡状态，如图3所示。
可选的，应力吸收胶40还设置为吸收封装基板10和保护盖板30在外界环境变化时产生的机械应力，例如搬运或者运输过程中吸收封装基板10或者保护盖板30受到的压应力，保证封装基板10和保护盖板30不被损坏。
综上，本公开实施例提供的显示模组封装结构，包括封装基板、显示面板、保护盖板以及位于封装基板与保护盖板之间且位于显示面板四周边缘的应力吸收胶。应力吸收胶贴合封装基板和保护盖板，并且吸收封装基板和保护盖板在外部温度发生变化时产生的热应力，避免当外界温度发生变化时，封装基板和保护盖板因热膨胀系数不同造成的翘曲、分离现象，提升显示模组的封装效果；并且，应力吸收胶还保持封装基板、保护盖板和应力吸收胶处于热平衡状态，避免某一基板温度过高对显示面板造成损伤。
图4是本公开实施例提供的另一种显示模组封装结构的结构示意图。
如图4所示，显示模组的封装结构可以包括：封装基板10；位于封装基板10上的显示面板20；位于显示面板20上远离封装基板10一侧的保护盖板30；以及位于封装基板10与保护盖板30之间且位于显示面板20四周边缘的应力吸收胶40。应力吸收胶40贴合封装基板10和保护盖板30，并且吸收封装基板10和保护盖板30在外部温度发生变化时产生的热应力。
应力吸收胶40中设置有若干蜂窝状孔洞401，孔洞401用于散发显示面板20产生的热量。
示例性的，如图4所示，应力吸收胶40中设置有若干蜂窝状的孔洞401，显示面板20工作过程中产生的热量可以通过孔洞401散发出去，避免显示面板20由于温度过高影响显示面板20的显示质量，同时还可以提高显示面板20的使用寿命。
综上，本公开实施例提供的显示模组封装结构，在封装基板与保护盖板之间设置有应力吸收胶，应力吸收胶中设置有孔洞，不仅可以通过应力吸收胶贴合封装基板和保护盖板，通过应力吸收胶吸收封装基板和保护盖板在外部温度发生变化时产生的热应力，避免当外界温度发生变化时，封装基板和保护盖板因热膨胀系数不同造成的翘曲、分离现象，提升显示模组的封装效果；并且，还可以通过应力吸收胶中设置的孔洞散发显示面板工作过程中产生的热量，保证显示面板的显示指令以及提高显示面板的使用寿命。
图5是本公开实施例提供的又一种显示模组封装结构的结构示意图。如图5所示，显示模组的封装结构可以包括：封装基板10；位于封装基板10上的显示面板20；位于显示面板20上远离封装基板10一侧的保护盖板30；位于封装基板10与保护盖板30之间且位于显示面板20四周边缘的应力吸收胶40。应力吸收胶40贴合封装基板10和保护盖板30，并且吸收封装基板10和保护盖板30 在外部温度发生变化时产生的热应力；
封装基板10和/或保护盖板30朝向应力吸收胶40的一侧设置有粘性层50，粘性层50与应力吸收胶40对应设置。
在本实施例中，封装基板10和应力吸收胶40之间设置有第一粘性层501，保护盖板30和应力吸收胶40之间设置有第二粘性层502。
如图5所示，在封装基板10朝向应力吸收胶40的一侧设置有第一粘性层501，在保护盖板30朝向应力吸收胶40的一侧设置有第二粘性层502，第一粘性层501和第二粘性层502设置于与应力吸收胶40对应的位置上，可以增强封装基板10与应力吸收胶40的粘接性以及保护盖板30与应力吸收胶40的粘接性。封装基板10和保护盖板30的翘曲现象或者分离现象多发生在边缘位置。粘性层50可以提高显示模组的封装性能，避免封装基板10和/或保护盖板30发生翘曲或者分离现象，或者是减小基板10和/或保护盖板30发生翘曲或者分离现象的可能性，提高显示模组的封装质量。
可选的，粘性层50为粗造化层，可以提升封装基板10、保护盖板30与应力吸收胶40的粘接强度，进一步提升显示模组的封装性能。可选的，可以是在封装基板10、保护盖板30与应力吸收胶40之间添加粗糙化层的方法形成粗糙化层，还可以通过对封装基板10和保护盖板30与应力吸收胶40对应的位置进行粗糙化处理，形成粗糙化层，本公开实施中对粗糙化层的形成方式不进行限定，只需在封装基板10、保护盖板30与应力吸收胶40之间形成粗糙化层，保证提升封装基板10、保护盖板30与应力吸收胶40的粘接强度，进一步提升显示模组的封装性能即可。
综上，本公开实施例提供的显示模组封装结构，包括封装基板、显示面板、保护盖板、位于封装基板上且位于显示面板四周边缘的应力吸收胶以及位于封 装基板和/或保护盖板朝向应力吸收胶的一侧的高粘性层，所述高粘性层与应力吸收胶对应设置，通过高粘性成提升应力吸收胶与封装基板和保护盖板的粘接性能，进一步提升显示模组的封装性能，避免或者减轻封装基板和/或保护盖板的翘曲、分离现象，提升显示模组的封装质量。
图6是本公开实施例提供的一种显示装置的结构示意图。所述显示装置包括上述实施例所述的显示模组封装结构1。所述显示装置可以为诸如手机之类的智能设备。
注意，上述仅为本公开的实施例及所运用技术原理。本领域技术人员会理解，本公开不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本公开的保护范围。因此，虽然通过以上实施例对本公开进行了较为详细的说明，但是本公开不仅仅限于以上实施例，在不脱离本公开构思的情况下，还可以包括更多其他等效实施例，而本公开的范围由所附的权利要求范围决定。

Claims (20)

  1. 一种显示模组封装结构，包括：
    封装基板；
    位于所述封装基板上的显示面板；
    位于所述显示面板上的保护盖板；
    位于所述封装基板与所述保护盖板之间且位于所述显示面板四周边缘的应力吸收胶，所述应力吸收胶贴合所述封装基板和所述保护盖板，所述应力吸收胶设置为吸收热应力。
  2. 根据权利要求1所述的显示模组封装结构，其中，当所述显示模组封装结构的外部温度发生变化时，所述应力吸收胶保持所述封装基板、所述保护盖板和所述应力吸收胶处于热平衡状态。
  3. 根据权利要求1所述的显示模组封装结构，其中，所述应力吸收胶包括下述材料中的至少一种：
    环氧树脂、亚克力胶、乙烯基醚类树脂和丙烯酸酯类树脂。
  4. 根据权利要求1所述显示模组封装结构，其中，在外界环境变化时，所述应力吸收胶还吸收所述封装基板和所述保护盖板的机械应力。
  5. 根据权利要求1所述的显示模组封装结构，其中，所述应力吸收胶中设置有孔洞，所述孔洞用于散热。
  6. 根据权利要求1所述的显示模组封装结构，其中，所述封装基板和所述应力吸收胶之间设置有第一粘性层，所述保护盖板和所述应力吸收胶之间设置有第二粘性层。
  7. 根据权利要求6所述的显示模组封装结构，其中，所述第一粘性层和第二粘性层均为粗糙化层。
  8. 根据权利要求1所述的显示模组封装结构，其中，所述封装基板的材质 为塑料，所述保护盖板的材质为玻璃。
  9. 根据权利要求1所述的显示模组封装结构，其中，所述显示面板为液晶显示面板。
  10. 一种显示装置，其中，包括显示模组封装结构，
    所述显示模组封装结构包括：
    封装基板；
    位于所述封装基板上的显示面板；
    位于所述显示面板上的保护盖板；
    位于所述封装基板与所述保护盖板之间且位于所述显示面板四周边缘的应力吸收胶，所述应力吸收胶贴合所述封装基板和所述保护盖板，所述应力吸收胶设置为吸收热应力。
  11. 根据权利要求10所述的显示装置，其中，当所述显示模组封装结构的外部温度发生变化时，所述应力吸收胶保持所述封装基板、所述保护盖板和所述应力吸收胶处于热平衡状态。
  12. 根据权利要求10所述的显示装置，其中，所述应力吸收胶包括下述材料中的至少一种：环氧树脂、亚克力胶、乙烯基醚类树脂和丙烯酸酯类树脂。
  13. 根据权利要求10所述的显示装置，其中，所述应力吸收胶中设置有用于散热的孔洞。
  14. 根据权利要求10所述的显示装置，其中，所述封装基板和所述应力吸收胶之间设置有第一粘性层，所述保护盖板和所述应力吸收胶之间设置有第二粘性层。
  15. 根据权利要求10所述的显示装置，其中，所述封装基板的材质为塑料，所述保护盖板的材质为玻璃。
  16. 一种显示模组封装结构，包括：
    封装基板；
    显示面板，位于所述封装基板上；
    保护盖板，通过应力吸收胶和所述封装基板连接，用以密封一个空间，所述空间位于所述封装基板和所述保护盖板之间，所述显示面板位于所述空间之内，
    其中，在温度变化时，所述应力吸收胶设置为吸收热应力。
  17. 根据权利要求16所述的显示模组封装结构，其中，所述应力吸收胶包括下述材料中的至少一种：环氧树脂、亚克力胶、乙烯基醚类树脂和丙烯酸酯类树脂。
  18. 根据权利要求16所述的显示模组封装结构，其中，所述封装基板和所述应力吸收胶之间设置有第一粘性层，所述保护盖板和所述应力吸收胶之间设置有第二粘性层。
  19. 根据权利要求16所述的显示模组封装结构，其中，所述应力吸收胶中设置有用于散热的孔洞。
  20. 根据权利要求16所述的显示模组封装结构，其中，当所述显示模组封装结构的外部温度发生变化时，所述应力吸收胶保持所述封装基板、所述保护盖板和所述应力吸收胶处于热平衡状态。
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