WO2023035249A1 - 一种显示模组及其制备方法、显示装置 - Google Patents

一种显示模组及其制备方法、显示装置 Download PDF

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Publication number
WO2023035249A1
WO2023035249A1 PCT/CN2021/117821 CN2021117821W WO2023035249A1 WO 2023035249 A1 WO2023035249 A1 WO 2023035249A1 CN 2021117821 W CN2021117821 W CN 2021117821W WO 2023035249 A1 WO2023035249 A1 WO 2023035249A1
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WO
WIPO (PCT)
Prior art keywords
display module
rough structure
bottom plate
area
plate
Prior art date
Application number
PCT/CN2021/117821
Other languages
English (en)
French (fr)
Inventor
李磊
夏航
任健
舒宗英
肖亮
张乐
高露
付忙
刘全洲
王博宁
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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.)
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Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202180002515.3A priority Critical patent/CN116348808A/zh
Priority to US17/796,272 priority patent/US20240184166A1/en
Priority to PCT/CN2021/117821 priority patent/WO2023035249A1/zh
Publication of WO2023035249A1 publication Critical patent/WO2023035249A1/zh

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    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices

Definitions

  • Embodiments of the present disclosure relate to but are not limited to the field of display technology, and specifically relate to a display module, a manufacturing method thereof, and a display device.
  • the backplane and the plastic frame are generally fixed through the glue inlet.
  • the design of the glue inlet becomes smaller and smaller. It enters from the gap between the backplane and the plastic frame, which will deteriorate the sealing of the module and cause problems such as failure of the display screen.
  • an embodiment of the present disclosure provides a display module, including: a back plate and a plastic frame, the back plate includes a bottom plate, the bottom plate includes an edge area, and the glue frame is disposed on the edge area,
  • the edge region is provided with a rough structure area
  • the rough structure area includes a plurality of rough structures, at least part of the orthographic projection of the rough structures on the base plate overlaps with the orthographic projection of the plastic frame on the base plate , the material of the rubber frame fills at least part of the space of the rough structure.
  • the rough structure is micro-nano-scale grooves.
  • the cross-sectional shape of the groove perpendicular to the plane of the rough structure region includes at least one of U-shape, arc-shape, and V-shape.
  • the average area of the openings of the rough structure in the rough structure region is in a range of 1.5 square micrometers to 11.5 square micrometers.
  • the edge region is provided with a glue inlet
  • the glue inlet penetrates the bottom plate
  • the material of the glue frame fills at least part of the space of the glue inlet
  • the rough structure area surrounds the Arrange around the glue inlet hole.
  • the opening of the glue inlet hole is circular, and the diameter of the opening of the glue inlet hole is 0.45-0.6 mm.
  • the rough structure area is arranged around the glue inlet hole.
  • the bottom plate is not provided with a glue inlet hole.
  • the roughened regions are arranged in the shape of a closed circle on the edge region.
  • a backlight assembly is further included, the bottom plate further includes a central area, the edge area is located around the central area, the backlight assembly is disposed on the central area, and the plastic frame surrounds the central area. around the backlight unit.
  • a display panel is further included, and the display panel is disposed on a side of the plastic frame away from the bottom plate.
  • the back plate further includes a side plate, the side plate is located on the peripheral side of the bottom plate, and a boss is provided on the side of the plastic frame close to the side plate, and the boss is located on the side of the side plate.
  • the end of the side plate away from the bottom plate, the vertical projection of the boss on the bottom plate at least partially overlaps the vertical projection of the side plate on the bottom plate.
  • the embodiment of the present disclosure also provides a method for manufacturing a display module, including:
  • the backing plate comprising a base plate comprising an edge region
  • a glue frame is formed on the edge region, and at least part of the glue frame is filled in the rough structure.
  • a roughness is formed on at least part of the edge region by an electrochemical treatment process.
  • an embodiment of the present disclosure further provides a display device, including: the aforementioned display module.
  • FIG. 1 is a schematic structural diagram of a display module in the related art
  • FIG. 2 is an enlarged view of a display module in the related art
  • FIG. 3 is a cross-sectional view of a display module in the related art
  • FIG. 4 is a first structural schematic diagram of a display module according to an embodiment of the present disclosure.
  • FIG. 5 is an enlarged view 1 of a display module according to an embodiment of the present disclosure.
  • FIG. 6 is a first cross-sectional view of a display module according to an embodiment of the present disclosure.
  • FIG. 7 is a second structural schematic diagram of a display module according to an embodiment of the present disclosure.
  • FIG. 8 is the second enlarged view of the display module of the embodiment of the present disclosure.
  • FIG. 9 is a second cross-sectional view of a display module according to an embodiment of the present disclosure.
  • FIG. 10 is a structural schematic diagram of a rough structure in a display module according to an embodiment of the present disclosure.
  • connection should be interpreted in a broad sense.
  • it may be a fixed connection, or a detachable connection, or an integral connection; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediate piece, or an internal communication between two components.
  • FIG. 1 is a schematic structural diagram of a display module in the related art
  • FIG. 2 is an enlarged view of the display module in the related art
  • FIG. 3 is a cross-sectional view of the display module in the related art.
  • the display module includes a backplane 1, a plastic frame 2 and a backlight assembly 3.
  • the backplane 1 includes a bottom plate 101 and a side plate 102.
  • the side plate 102 is arranged on the peripheral side of the bottom plate 101.
  • An accommodating space is formed with the bottom plate 101; the plastic frame 2 and the backlight assembly 3 are located in the accommodating space.
  • the bottom plate 101 includes a central area 10 and an edge area 20 surrounding the central area 10 , the backlight assembly 3 is disposed on the central area 10 , the plastic frame 2 is disposed on the edge area 20 , and the plastic frame 2 is disposed around the backlight assembly 3 .
  • At least one glue inlet 4 is arranged on the edge area 20 , and the bottom of the glue frame 2 fills the glue inlet 4 .
  • the glue inlet 4 can fix the glue frame 2 ; on the other hand, during the process of forming the glue frame 2 by injection molding, the glue frame material in the molten state can enter the edge area 20 through the glue inlet 4 to form the glue frame 2 .
  • the glue inlet 4 becomes smaller, which leads to the deterioration of the bonding force between the glue frame 2 and the glue inlet 4, reduces the fixing strength of the glue frame 2, and produces The problem of membrane material wrinkles; and, the sealability between the plastic frame 2 and the glue inlet hole 4 is deteriorated, and water vapor is easy to enter from the gap between the back plate and the plastic frame, causing the display screen to fail.
  • FIG. 4 is a first schematic structural view of the display module according to an embodiment of the present disclosure
  • FIG. 5 is an enlarged view of the display module according to an embodiment of the present disclosure
  • FIG. 6 is a first cross-sectional view of the display module according to an embodiment of the present disclosure.
  • the display module in the embodiment of the present disclosure includes: a backplane 1 and a plastic frame 2 .
  • the backplane 1 includes a base plate 101
  • the base plate 101 includes an edge area 20 corresponding to a frame area of the display module.
  • the glue frame 2 is disposed on the edge area 20 . At least part of the edge region 20 is provided with a rough structure area 5, the rough structure area 5 includes a plurality of rough structure areas 501, and the orthographic projection of at least part of the rough structure 501 on the base plate 101 overlaps with the orthographic projection of the glue frame 2 on the base plate 101 , the material of the plastic frame 2 fills at least part of the space of the rough structure 501 .
  • the backplane 1 can be made of metal, for example, aluminum and its alloys, iron and its alloys, and the like.
  • the embodiment of the present disclosure shows that the rough structure 501 of the module can increase the bonding force between the backplane 1 and the plastic frame 2, and the plastic frame 2 fills the rough structure 501, which can seal the gap between the plastic frame 2 and the bottom plate 101 and prevent the entry of water vapor.
  • FIG. 10 is a structural schematic diagram of a rough structure in a display module according to an embodiment of the present disclosure.
  • the roughness 501 may be a groove that does not penetrate through the bottom plate 101 .
  • the groove can be a micro-nano scale groove.
  • the rough structure 501 has an opening 502 , and the opening 502 is disposed on the side surface of the edge area 20 close to the plastic frame 2 , and the material of the plastic frame 2 can fill at least part of the space of the rough structure 501 through the opening 502 .
  • the micro-nano-scale groove means that the average pore diameter of the opening of the groove is between 1 nanometer and 1 micrometer.
  • the opening 502 of the roughness 501 may take various shapes.
  • the shape of the opening 502 of the rough structure 501 may include regular or irregular shapes such as a circle, an ellipse, a rhombus, and a rectangle.
  • the opening 502 of the roughness 501 can take various sizes.
  • the average pore diameter of the openings 502 of the rough structure 501 is in the range of 50 nm to 120 nm.
  • the average area of the opening 502 of the rough structure 501 in the rough structure region 5 is in the range of 1.5 square micrometers to 11.5 square micrometers, so that the rough structure 501 can increase the bonding force between the backplane 1 and the plastic frame 2 without reducing too much The strength of the bottom plate 101.
  • the values of the average pore diameter and the average area may include endpoint values.
  • the rough structure area 5 includes a plurality of rough structures 501, and the plurality of rough structures 501 are arranged at intervals, so that the surface of the rough structure area 5 near the rubber frame 2 forms unevenness. noodle.
  • the cross section of the rough structure 501 perpendicular to the plane where the rough structure region 5 is located may adopt various shapes, as long as the material of the rubber frame 2 can fill at least part of the space of the rough structure 501 .
  • the cross section of the rough structure 501 perpendicular to the plane of the rough structure region 5 can be U-shaped; or, the cross section of the rough structure 501 perpendicular to the plane of the rough structure region 5 can be arc-shaped; or, the rough structure 501 is perpendicular to the rough structure
  • the cross-section of the plane where the zone 5 is located may be V-shaped.
  • the embodiment of the present disclosure shows that the module forms the rough structure region 5 on the edge region 20 through electrochemical processing technology.
  • the plastic frame material in the molten state enters at least part of the rough structure 501 in the rough structure region 5 , and after the plastic frame 2 is formed, the material of the plastic frame 2 fills at least part of the space of the rough structure 501 .
  • the rough structure 501 can increase the bonding force between the bottom plate 101 and the plastic frame 2 and seal the gap between the plastic frame 2 and the bottom plate 101 to enhance the water and oxygen resistance of the display module.
  • the edge region 20 may be partially provided with the rough structure region 5 , or the entire region of the edge region 20 may be provided with the rough structure region 5 .
  • a glue inlet 4 is provided on the base plate 101 , wherein the material of the glue frame 2 can be filled into the glue hole, and the filler and the glue frame 2 form an integral structure.
  • This setting can play the role of fixing the glue inlet.
  • the edge area 20 may not be provided with a glue inlet hole, that is,
  • the bottom plate 101 can be a non-porous closed bottom plate, which can realize narrow frame design
  • the arrangement of the rough structure regions 5 on the edge region 20 may take various forms.
  • the rough structure area 5 is arranged in the shape of a closed ring on the edge area 20 , and the closed ring shape is arranged around the base plate 101 and covers the edge area 20 , as shown in FIG. 4 .
  • the rough structure 501 can increase the bonding force between the bottom plate 101 and the plastic frame 2 and seal the gap between the plastic frame 2 and the bottom plate 101 to enhance the water and oxygen resistance of the display module.
  • the module preparation process includes: first forming the back plate 1; then, through the nano-injection molding process, injecting the plastic frame material in the molten state through the top or side of the back plate 1, and injecting the plastic frame material in the molten state Deposited on the edge region 20 , the plastic frame material in the molten state enters at least part of the space of the rough structure 501 , and finally the plastic frame 2 is formed, and the material of the plastic frame 2 fills at least part of the space of the rough structure 501 .
  • FIG. 7 is a structural schematic diagram II of the display module according to the embodiment of the disclosure
  • FIG. 8 is an enlarged diagram II of the display module according to the embodiment of the disclosure
  • FIG. 9 is a cross-sectional view II of the display module according to the embodiment of the disclosure.
  • Fig. 8 as an example of the enlarged view at c in Fig. 7;
  • at least one glue inlet hole 4 is provided in at least part of the edge region 20 , the glue inlet hole 4 runs through the bottom plate 101 , and the material of the glue frame 2 is filled in. At least part of the space of the glue hole 4.
  • the glue inlet 4 can fix the glue frame 2 ; on the other hand, during the process of forming the glue frame 2 by injection molding, the glue frame material in the molten state can enter the edge area 20 through the glue inlet 4 to form the glue frame 2 .
  • the rough structure region 5 of the embodiment of the present disclosure can serve as a fixing function of the glue frame 2, the area occupied by the glue inlet hole 4 on the bottom plate 101 can be reduced to realize a narrow frame design.
  • the opening of the glue inlet hole is circular, and the diameter of the glue inlet opening can be 0.8 mm.
  • the embodiment of the present disclosure shows that the opening of the glue inlet 4 in the module is circular, and the diameter of the glue inlet opening can be 0.45-0.6mm.
  • the arrangement of the glue inlet holes 4 on the edge region 20 can take various forms.
  • the rough structure area 5 can be arranged in a closed ring shape on the edge region 20 , the closed ring shape is arranged around the bottom plate 101 , and the rough structure area 5 is arranged around the glue inlet hole 4 .
  • the rough structure 501 can prevent water vapor and oxygen from entering the display module through the glue inlet 4 , and increase the bonding force between the bottom plate 101 and the glue frame 2 .
  • the rough structure area 5 can be arranged in an island shape only around the glue inlet 4 to prevent water vapor and oxygen from entering the display module through the glue inlet 4 . In this way, while ensuring the reliability of the display module, the process can be simplified and the production cost of the display module can be saved.
  • the module preparation process includes: first forming the back plate 1; then, through the nano-injection molding process, the plastic frame material in the molten state is passed through the glue inlet hole, and the plastic frame material in the molten state is deposited on the edge area 20 , making the plastic frame material in molten state enter at least part of the space of the rough structure 501 , finally forming the plastic frame 2 , and making the material of the plastic frame 2 fill at least part of the space of the rough structure 501 .
  • the display module of the embodiment of the present disclosure further includes a backlight assembly 3
  • the bottom plate 101 also includes a central area 10
  • the edge area 20 is located around the central area 10
  • the central area 10 is connected to the display module.
  • the backlight assembly 3 is disposed on the central area 10
  • the plastic frame 2 surrounds the backlight assembly 3 .
  • the backlight assembly 3 includes a light guide plate 301 disposed on the central area 10 and an optical film 302 disposed on a side of the light guide plate 301 away from the central area 10 .
  • the optical film material 302 includes at least one of a diffusion film, a prism film, a composite film and a brightness enhancement film.
  • the backlight assembly 3 further includes a reflective layer 303 , the reflective layer 303 is disposed between the light guide plate 301 and the central area 10 , and the reflective layer 303 is used to direct the direction emitted by the light guide plate 301 closer to The light in the direction of the central area 10 is reflected into the light guide plate 301 to form the light emitted in a direction away from the central area 10 , thereby increasing the outgoing light of the backlight assembly 3 .
  • the display module of the embodiment of the present disclosure further includes a display panel 6 disposed on the side of the plastic frame 2 away from the bottom plate 101 , and the display panel 6 is used for displaying images.
  • the display panel 6 may be a liquid crystal display panel.
  • the display panel 6 may include a first polarizer, an array substrate, a liquid crystal layer, a color filter substrate, and a second polarizer that are sequentially stacked.
  • the display module of the embodiment of the present disclosure further includes a light-shielding layer 7 , and the light-shielding layer 7 is disposed on the side of the plastic frame 2 away from the bottom plate 101 , between the plastic frame 2 and the display panel 6 .
  • the orthographic projection of the light-shielding layer 7 on the bottom plate 101 and the orthographic projection of the plastic frame 2 on the bottom plate 101 at least partially overlap.
  • One side of the light-shielding layer 7 can be fixed on the plastic frame 2 , and the other side can be fixed on the edge of the backlight assembly 3 .
  • the orthographic projection of the light-shielding layer 7 on the bottom plate 101 does not overlap with the orthographic projection of the display area of the display panel on the bottom plate 101 , preventing the light-shielding layer 7 from affecting the normal display of the picture in the display area.
  • the light-shielding layer 7 is made of a light-shielding material, which can cover the periphery of the display module, thereby avoiding the problem of light leakage of the display module.
  • the backplane 1 further includes a sideboard 102, the sideboard 102 is located on the peripheral side of the bottom board 101, the side board 102 and the bottom board 101 form an accommodation space, the plastic frame 2 and the backlight
  • the component 3 is located in the receiving space.
  • the extension surfaces of the side panels 102 and the bottom panel 101 may be perpendicular to the extension surfaces of the bottom panel 101 .
  • the plastic frame 2 is provided with a boss 201 near the side plate 102 , the boss 201 is located at the end of the side plate 102 away from the bottom plate 101 , and the boss 201 is on the bottom plate 101
  • the vertical projection of the side plate 102 at least partially overlaps with the vertical projection of the side plate 102 on the bottom plate 101, so as to prevent the burrs generated by the side plate 102 from being exposed and have a protective effect.
  • the plastic frame material in a molten state can be deposited on the edge region 20 through the top of the side plate 102 .
  • the plastic frame material in a partially molten state is deposited on the end of the side plate 102 away from the bottom plate 101 , and after the plastic frame 2 is formed, the plastic frame material in a molten state located at the end of the side plate 102 away from the bottom plate 101 forms a boss 201 .
  • An embodiment of the present disclosure also provides a method for manufacturing a display module, including:
  • the backing plate comprising a base plate comprising an edge region
  • a rough structure is formed on at least part of the edge region; wherein the rough structure can be formed on at least part of the edge region by an electrochemical treatment process.
  • a glue frame is formed on the edge region, and at least part of the glue frame is filled in the rough structure.
  • An embodiment of the present disclosure also provides a display device, including any one of the above-mentioned display modules.
  • the display device includes a mobile phone, a tablet computer, a smart wearable product (such as a smart watch, a bracelet, etc.), a personal digital assistant (personal digital assistant, PDA), a vehicle computer, and the like.
  • PDA personal digital assistant
  • Embodiments of the present disclosure do not specifically limit the specific form of the above-mentioned foldable display device

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  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示模组及其制备方法、显示装置，显示模组包括：背板（1）以及胶框（2），背板（1）包括底板（101），底板（101）包括边缘区域（20），胶框（2）设置于边缘区域（20）上，边缘区域（20）设置有粗糙结构区（5），粗糙结构区（5）包括多个粗糙结构（501），至少部分粗糙结构（501）在底板（101）上的正投影与胶框（2）在底板（101）上的正投影交叠，胶框（2）的材料填充粗糙结构（501）的至少部分空间，粗糙结构（501）能够增加背板（1）与胶框（2）的结合力，胶框（2）填充粗糙结构（501），能够密封胶框（2）与底板（101）之间的缝隙，避免水汽的进入。

Description

一种显示模组及其制备方法、显示装置 技术领域
本公开实施例涉及但不限于显示技术领域，具体涉及一种显示模组及其制备方法、显示装置。
背景技术
近年来，随着显示技术的不断发展，显示装置的应用范围也不断扩大，如，智能手机，智能手环，智能电视，车载显示等。而随着汽车市场的火热，搭配大屏中控及仪表盘需求日益增大，以满足人们对车的需求。如今车载触控显示也逐渐走向大屏化，高清化，窄边框化等多形态。
目前，背板与胶框一般通过进胶孔结合固定，由于边框越来越窄，导致进胶孔设计越来越小，背板与胶框结合力变差，产生膜材褶皱，以及存在水汽从背板与胶框结合处缝隙里进入，使模组密封性变差，造成显示画面失效等问题。
发明内容
以下是对本公开详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
第一方面，本公开实施例提供了一种显示模组，包括：背板以及胶框，所述背板包括底板，所述底板包括边缘区域，所述胶框设置于所述边缘区域上，所述边缘区域设置有粗糙结构区，所述粗糙结构区包括多个粗糙结构，至少部分所述粗糙结构在所述底板上的正投影与所述胶框在所述底板上的正投影交叠，所述胶框的材料填充所述粗糙结构的至少部分空间。
在示例性实施方式中，所述粗糙结构为微纳米级凹槽。
在示例性实施方式中，所述凹槽垂直于粗糙结构区所在平面的截面形状包括U形、圆弧形、V形中的至少一种。
在示例性实施方式中，所述粗糙结构的开口在所述粗糙结构区的平均面积在1.5平方微米至11.5平方微米范围内。
在示例性实施方式中，所述边缘区域设置有进胶孔，所述进胶孔贯穿所述底板，所述胶框的材料填充所述进胶孔至少部分空间，所述粗糙结构区围绕所述进胶孔的四周排布。
在示例性实施方式中，所述进胶孔的开口为圆形，所述进胶孔开口的直径为0.45-0.6mm。
在示例性实施方式中，所述粗糙结构区围绕所述进胶孔的四周排布。
在示例性实施方式中，所述底板不设置进胶孔。
在示例性实施方式中，所述粗糙结构区在所述边缘区域上排列成封闭圈形。
在示例性实施方式中，还包括背光组件，所述底板还包括中央区域，所述边缘区域位于所述中央区域的周围，所述背光组件设置于所述中央区域上，所述胶框围绕所述背光组件的四周。
在示例性实施方式中，还包括显示面板，所述显示面板设置于所述胶框远离所述底板一侧。
在示例性实施方式中，所述背板还包括侧板，所述侧板位于所述底板的周侧，所述胶框靠近所述侧板一侧设置有凸台，所述凸台位于所述侧板远离所述底板的一端，所述凸台在所述底板的垂直投影与所述侧板在所述底板的垂直投影至少部分交叠。
第二方面，本公开实施例还提供了一种显示模组的制备方法，包括：
形成背板，所述背板包括底板，所述底板包括边缘区域；
在所述边缘区域的至少部分上形成粗糙结构；
在所述边缘区域上形成胶框，并使所述胶框的至少部分填充于所述粗糙结构中。
在示例性实施方式中，通过电化学处理工艺，在所述边缘区域的至少部分上形成粗糙结构。
第三方面，本公开实施例还提供了一种显示装置，包括：前述的显示模组。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
附图用来提供对本公开技术方案的理解，并且构成说明书的一部分，与本公开的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。
图1为相关技术中显示模组的结构示意图；
图2为相关技术中显示模组的放大图；
图3为相关技术中显示模组的剖视图；
图4为本公开实施例显示模组的结构示意图一；
图5为本公开实施例显示模组的放大图一；
图6为本公开实施例显示模组的剖视图一；
图7为本公开实施例显示模组的结构示意图二；
图8为本公开实施例显示模组的放大图二；
图9为本公开实施例显示模组的剖视图二；
图10为本公开实施例显示模组中粗糙结构的结构示意图。
具体实施方式
下文中将结合附图对本公开的实施例进行详细说明。注意，实施方式可以以多个不同形式来实施。所属技术领域的普通技术人员可以很容易地理解一个事实，就是方式和内容可以在不脱离本公开的宗旨及其范围的条件下被变换为各种各样的形式。因此，本公开不应该被解释为仅限定在下面的实施方式所记载的内容中。在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互任意组合。
在本说明书中，为了方便起见，使用“中部”、“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示方位或位置关系的词句以参 照附图说明构成要素的位置关系，仅是为了便于描述本说明书和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。构成要素的位置关系根据描述各构成要素的方向适当地改变。因此，不局限于在说明书中说明的词句，根据情况可以适当地更换。
在本说明书中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解。例如，可以是固定连接，或可拆卸连接，或一体地连接；可以是机械连接，或电连接；可以是直接相连，或通过中间件间接相连，或两个元件内部的连通。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本公开中的含义。
本公开中的“约”，是指不严格限定界限，允许工艺和测量误差范围内的数值。
图1为相关技术中显示模组的结构示意图；图2为相关技术中显示模组的放大图；图3为相关技术中显示模组的剖视图。以图2为图1中a处放大图为例；以及以图3为图1中A-A处剖视图为例进行。如图1、图2和图3所示，显示模组包括背板1、胶框2以及背光组件3，背板1包括底板101和侧板102，侧板102设置于底板101的周侧，与底板101形成容纳空间；胶框2以及背光组件3位于容纳空间中。底板101包括中央区域10以及围绕中央区域10周围的边缘区域20，背光组件3设置于中央区域10上，胶框2设置于边缘区域20上，且胶框2围绕背光组件3的四周设置。边缘区域20上设置有至少一个进胶孔4，胶框2的底部填充进胶孔4。进胶孔4一方面能够固定胶框2；另一方面，在注塑形成胶框2过程中，熔融状态下的胶框材料能够通过进胶孔4进入边缘区域20上，形成胶框2。
经过本公开发明人研究发现，相关技术中显示模组采用窄边框设计时，进胶孔4变小，导致胶框2与进胶孔4结合力变差，降低胶框2的固定强度，产生膜材褶皱的问题；以及，导致胶框2与进胶孔4密封性变差，水汽容易从背板与胶框结合处缝隙里进入，造成显示画面失效。
图4为本公开实施例显示模组的结构示意图一；图5为本公开实施例显示模组的放大图一；图6为本公开实施例显示模组的剖视图一。以图5为图 4中b处放大图为例；以及以图6为图4中B-B处剖视图为例。如图4、图5和图6所示，本公开实施例显示模组包括：背板1以及胶框2。背板1包括底板101，底板101包括边缘区域20，边缘区域20与显示模组的边框区域对应。胶框2设置于边缘区域20上。边缘区域20的至少部分设置有粗糙结构区5，粗糙结构区5包括多个粗糙结构区501，至少部分粗糙结构501在底板101上的正投影与胶框2在底板101上的正投影交叠，胶框2的材料填充粗糙结构501的至少部分空间。其中，背板1可以采用金属材质，例如，铝及其合金，铁及其合金等。
本公开实施例显示模组的粗糙结构501能够增加背板1与胶框2的结合力，胶框2填充粗糙结构501，能够密封胶框2与底板101之间的缝隙，避免水汽的进入。
图10为本公开实施例显示模组中粗糙结构的结构示意图。在示例性实施方式中，如图10所示，粗糙结构501可以为不贯穿底板101的凹槽。该凹槽可以为微纳米级凹槽。粗糙结构501具有开口502，开口502设置于边缘区域20靠近胶框2一侧表面上，胶框2的材料可以通过开口502填充粗糙结构501的至少部分空间。其中，微纳米级凹槽是指在凹槽的开口的平均孔径在1纳米到1微米之间。
在示例性实施方式中，如图10所示，粗糙结构501的开口502可以采用多种形状。例如，粗糙结构501的开口502的形状可以包括圆形、椭圆形、菱形、矩形等规则或不规则形状。
在示例性实施方式中，如图10所示，粗糙结构501的开口502可以采用多种尺寸。例如，粗糙结构501的开口502的平均孔径在50nm至120nm范围内。例如，粗糙结构501的开口502在粗糙结构区5的平均面积在1.5平方微米至11.5平方微米范围内，使粗糙结构501能够增加背板1与胶框2的结合力，同时不会过多降低底板101的强度。所述平均孔径以及平均面积的取值可以包括端点值。
在示例性实施方式中，如图10所示，粗糙结构区5包括多个粗糙结构501，多个粗糙结构501之间间隔排布，使粗糙结构区5靠近胶框2一侧的表面形成凹凸面。
在示例性实施方式中，粗糙结构501垂直于粗糙结构区5所在平面截面可以采用多种形状，只要胶框2的材料能够填充粗糙结构501的至少部分空间即可。例如，粗糙结构501垂直于粗糙结构区5所在平面的截面可以为U形；或者，粗糙结构501垂直于粗糙结构区5所在平面的截面可以为圆弧形；或者，粗糙结构501垂直于粗糙结构区5所在平面的截面可以为V形。
本公开实施例显示模组通过电化学处理技术，在边缘区域20上形成粗糙结构区5。在注塑形成胶框2过程中，熔融状态下的胶框材料进入粗糙结构区5中至少部分粗糙结构501，形成胶框2后，胶框2的材料填充粗糙结构501的至少部分空间。粗糙结构501能够增加底板101与胶框2的结合力，并密封胶框2与底板101之间的缝隙，以增强显示模组的抗水氧能力。
在示例性实施方式中，边缘区域20可以部分区域设置有粗糙结构区5，或者，边缘区域20全部区域均设置有粗糙结构区5。
在相关技术中，在底板101上设置进胶孔4，其中胶框2的材料可以填充进胶孔，填充物与胶框2形成一体结构。这样设置可以起到固定进胶孔的作用。而在本公开的示例性实施方式中，如图6所示，由于本公开实施例显示模组能够通过粗糙结构区5与胶框2固定，因此，边缘区域20可以不设置进胶孔，即底板101可以为无孔的封闭底板，可以实现窄边框设计
。在示例性实施方式中，粗糙结构区5在边缘区域20上的排布方式可以采用多种形式。例如，粗糙结构区5在边缘区域20上排列成封闭圈形，该封闭圈形环绕底板101的四周设置，并覆盖边缘区域20，如图4所示。粗糙结构501能够增加底板101与胶框2的结合力，并密封胶框2与底板101之间的缝隙，以增强显示模组的抗水氧能力。
本公开实施例显示模组制备过程包括：先形成背板1；然后通过纳米注塑工艺，将熔融状态下的胶框材料通过背板1的上方或者侧面进胶，将熔融状态下的胶框材料沉积在边缘区域20上，使熔融状态下的胶框材料进入粗糙结构501的至少部分空间中，最后形成胶框2，并使胶框2材料填充粗糙结构501的至少部分空间。
图7为本公开实施例显示模组的结构示意图二；图8为本公开实施例显示模组的放大图二；图9为本公开实施例显示模组的剖视图二。以图8为图 7中c处放大图为例；以及以图9为图7中C-C处剖视图为例。在示例性实施方式中，如图7、图8和图9所示，边缘区域20的至少部分中设置有至少一个进胶孔4，进胶孔4贯穿底板101，胶框2的材料填充进胶孔4的至少部分空间。进胶孔4一方面能够固定胶框2；另一方面，在注塑形成胶框2过程中，熔融状态下的胶框材料能够通过进胶孔4进入边缘区域20上，形成胶框2。由于本公开实施例粗糙结构区5可以起到胶框2的固定作用，因此可以减小进胶孔4的在底板101所占的面积，以实现窄边框设计。例如，在相关技术中，进胶孔开口为圆形，进胶孔开口的直径可以为0.8mm，本公开实施例显示模组中进胶孔4开口为圆形，进胶孔开口的直径可以为0.45-0.6mm。
在示例性实施方式中，进胶孔4在边缘区域20上的排布方式可以采用多种形式。例如，如图4所示，粗糙结构区5可以在边缘区域20上排列成封闭圈形，该封闭圈形围绕底板101的四周设置，并且粗糙结构区5围绕进胶孔4设置。粗糙结构501可以防止水蒸气和氧气通过进胶孔4进入显示模组内部，并且增加底板101与胶框2的结合力。
又例如，如图7和图8所示，粗糙结构区5可以仅围绕进胶孔4的四周成岛状排布，防止水蒸气和氧气通过进胶孔4进入显示模组内部。这样在保证显示模组信赖性的同时，可以简化工艺，节约显示模组的制作成本。
本公开实施例显示模组制备过程包括：先形成背板1；然后通过纳米注塑工艺，将熔融状态下的胶框材料通过进胶孔，将熔融状态下的胶框材料沉积在边缘区域20上，使熔融状态下的胶框材料进入粗糙结构501的至少部分空间中，最后形成胶框2，并使胶框2材料填充粗糙结构501的至少部分空间。
在示例性实施方式中，如图6所示，本公开实施例显示模组还包括背光组件3，底板101还包括中央区域10，边缘区域20位于中央区域10的周围，中央区域10与显示模组的显示区域对应。背光组件3设置于中央区域10上，胶框2围绕背光组件3的四周。
在示例性实施方式中，如图6所示，背光组件3包括设置于中央区域10上的导光板301以及设置于导光板301远离中央区域10一侧的光学膜材302。其中，光学膜材302包括扩散膜、棱镜膜、复合膜和增亮膜中的至少一种。
在示例性实施方式中，如图6所示，背光组件3还包括反射层303，反射层303设置于导光板301与中央区域10之间，反射层303用于将导光板301发出的朝向靠近中央区域10方向的光线反射至导光板301中，形成朝向远离中央区域10方向发射的光线，从而增加背光组件3的出射光线。
在示例性实施方式中，如图6所示，本公开实施例显示模组还包括显示面板6，显示面板6设置于胶框2远离底板101一侧，显示面板6用于显示图像。
在示例性实施方式中，如图6所示，显示面板6可以为液晶显示面板。例如，显示面板6可以包括依次层叠设置的第一偏光片、阵列基板、液晶层、彩膜基板以及第二偏光片。
在示例性实施方式中，如图6所示，本公开实施例显示模组还包括遮光层7，遮光层7设置于胶框2远离底板101一侧，位于胶框2与显示面板6之间。遮光层7在底板101上的正投影与胶框2在底板101上的正投影至少部分交叠。遮光层7的一侧可以固定在胶框2上，另一侧可以固定在背光组件3的边缘。遮光层7在底板101上的正投影与显示面板的显示区在底板101上的正投影不交叠，防止遮光层7对影响显示区内画面的正常显示。遮光层7采用遮光材质，可以遮盖显示模组边缘四周，从而避免显示模组产生漏光的问题。
在示例性实施方式中，如图6和图8所示，背板1还包括侧板102，侧板102位于底板101的周侧，侧板102与底板101形成容纳空间，胶框2和背光组件3位于容纳空间中。可选地，侧板102与底板101的延伸面可与底板101的延伸面垂直。
在示例性实施方式中，如图6和图8所示，胶框2靠近侧板102一侧设置有凸台201，凸台201位于侧板102远离底板101的一端，凸台201在底板101的垂直投影与侧板102在底板101的垂直投影至少部分交叠，避免侧板102产生的毛刺外露，具有保护作用。
在示例性实施方式中，如图6所示，本公开实施例中的胶框2在制备过程中，可以通过侧板102的上方，将熔融状态下的胶框材料沉积在边缘区域 20上，并使部分熔融状态下的胶框材料沉积在侧板102远离底板101的一端，形成胶框2后，位于侧板102远离底板101一端的熔融状态下的胶框材料形成凸台201。
本公开实施例还提供了一种显示模组的制备方法，包括：
形成背板，所述背板包括底板，所述底板包括边缘区域；
在所述边缘区域的至少部分上形成粗糙结构；其中，可以通过电化学处理工艺，在边缘区域的至少部分上形成粗糙结构。
在所述边缘区域上形成胶框，并使所述胶框的至少部分填充于所述粗糙结构中。
本公开实施例还提供了一种显示装置，包括前面任一所述的显示模组。该显示装置包括手机、平板电脑、智能穿戴产品(例如智能手表、手环等)、个人数字助理(personal digital assistant，PDA)、车载电脑等。本公开实施例对上述可折叠显示装置的具体形式不做特殊限制
本公开中的附图只涉及本公开涉及到的结构，其他结构可参考通常设计。在不冲突的情况下，本公开的实施例即实施例中的特征可以相互组合以得到新的实施例。
本领域的普通技术人员应当理解，可以对本公开的技术方案进行修改或者等同替换，而不脱离本公开技术方案的精神和范围，均应涵盖在本公开的权利要求的范围当中。

Claims (14)

  1. 一种显示模组，包括：背板以及胶框，所述背板包括底板，所述底板包括边缘区域，所述胶框设置于所述边缘区域上，所述边缘区域设置有粗糙结构区，所述粗糙结构区包括多个粗糙结构，至少部分所述粗糙结构在所述底板上的正投影与所述胶框在所述底板上的正投影交叠，所述胶框的材料填充所述粗糙结构的至少部分空间。
  2. 根据权利要求1所述的显示模组，其中，所述粗糙结构为微纳米级凹槽。
  3. 根据权利要求2所述的显示模组，其中，所述凹槽垂直于粗糙结构区所在平面的截面形状包括U形、圆弧形、V形中的至少一种。
  4. 根据权利要求2所述的显示模组，其中，所述粗糙结构的开口在所述粗糙结构区的平均面积在1.5平方微米至11.5平方微米范围内。
  5. 根据权利要求1所述的显示模组，其中，所述边缘区域设置有进胶孔，所述进胶孔贯穿所述底板，所述胶框的材料填充所述进胶孔至少部分空间，所述粗糙结构区围绕所述进胶孔的四周排布。
  6. 根据权利要求5所述的显示模组，其中，所述进胶孔的开口为圆形，所述进胶孔开口的直径为0.45-0.6mm。
  7. 根据权利要求1所述的显示模组，其中，所述底板不设置进胶孔。
  8. 根据权利要求5-7任一所述的显示模组，其中，所述粗糙结构区在所述边缘区域上排列成封闭圈形。
  9. 根据权利要求1所述的显示模组，还包括背光组件，所述底板还包括中央区域，所述边缘区域位于所述中央区域的周围，所述背光组件设置于所述中央区域上，所述胶框围绕所述背光组件的四周。
  10. 根据权利要求1所述的显示模组，其中，还包括显示面板，所述显示面板设置于所述胶框远离所述底板一侧。
  11. 根据权利要求1所述的显示模组，其中，所述背板还包括侧板，所述侧板位于所述底板的周侧，所述胶框靠近所述侧板一侧设置有凸台，所述 凸台位于所述侧板远离所述底板的一端，所述凸台在所述底板的垂直投影与所述侧板在所述底板的垂直投影至少部分交叠。
  12. 一种显示模组的制备方法，包括：
    形成背板，所述背板包括底板，所述底板包括边缘区域；
    在所述边缘区域的至少部分上形成粗糙结构；
    在所述边缘区域上形成胶框，并使所述胶框的至少部分填充于所述粗糙结构中。
  13. 根据权利要求12所述的显示模组的制备方法，其中，通过电化学处理工艺，在所述边缘区域的至少部分上形成粗糙结构。
  14. 一种显示装置，包括：权利要求1至11任一所述的显示模组。
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