CN111610658A - Display module, manufacturing method thereof and display device - Google Patents

Display module, manufacturing method thereof and display device Download PDF

Info

Publication number
CN111610658A
CN111610658A CN202010589003.9A CN202010589003A CN111610658A CN 111610658 A CN111610658 A CN 111610658A CN 202010589003 A CN202010589003 A CN 202010589003A CN 111610658 A CN111610658 A CN 111610658A
Authority
CN
China
Prior art keywords
light
backlight module
display module
display
shielding
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.)
Granted
Application number
CN202010589003.9A
Other languages
Chinese (zh)
Other versions
CN111610658B (en
Inventor
刘明文
朱广
李竹山
陈志启
戴超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Tianma Microelectronics Co Ltd
Original Assignee
Wuhan Tianma Microelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Tianma Microelectronics Co Ltd filed Critical Wuhan Tianma Microelectronics Co Ltd
Priority to CN202010589003.9A priority Critical patent/CN111610658B/en
Publication of CN111610658A publication Critical patent/CN111610658A/en
Application granted granted Critical
Publication of CN111610658B publication Critical patent/CN111610658B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133528—Polarisers
    • 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
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells

Abstract

The application provides a display module assembly and a manufacturing method thereof, and a display device, wherein the display module assembly comprises a shading piece, the shading piece is positioned between a backlight module assembly and a display panel and is simultaneously contacted with the surface of the backlight of a lower polarizer, an array substrate and the backlight module, and simultaneously shades the light emitted from the backlight module to a blind hole and the light emitted from the interface of the lower polarizer and the array substrate, so that a shading structure formed by a glue dispensing process in the prior art is replaced, the problem of light leakage at the position of the blind hole is solved, the defect of the glue dispensing process on a display area is avoided, the display is influenced, the assembly process is simplified, and the cost is reduced.

Description

Display module, manufacturing method thereof and display device
Technical Field
The invention relates to the technical field of display, in particular to a display module, a manufacturing method of the display module and a display device.
Background
With the development of the liquid crystal display technology, especially the development of the full-screen technology, in order to make the display panel meet the full-screen requirement, a blind hole is formed between the hole and a part of the structure of the display panel through the opening of the backlight module, so as to accommodate the camera and other structures.
In order to reduce the light leak of blind hole position, set up light-shielding structure in the blind hole position among the prior art display module assembly, but prior art light-shielding structure still has the problem of easy light leak, and the preparation yield is lower simultaneously, influences the demonstration, and the equipment is also comparatively difficult.
Disclosure of Invention
In view of the above, the invention provides a display module, a manufacturing method thereof and a display device, so as to solve the problems of light leakage of a blind hole structure of a liquid crystal display screen, low manufacturing yield, display influence, difficulty in assembly and the like in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a display module, comprising:
the backlight module comprises a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module;
along deviating from backlight unit's direction, display panel includes in proper order: a lower polarizer and an array substrate;
the blind hole at least penetrates through the backlight module and the lower polarizer along the direction vertical to the plane of the display panel;
the shading piece at least comprises a shading first part and a shading second part;
the first shading part comprises a first surface and a second surface which are oppositely arranged, the first surface faces the backlight module, and the second surface is in contact with the surface of the lower polarizer facing the backlight module; the light-shielding second part comprises a third surface and a fourth surface which are oppositely arranged, the third surface is in contact with the surface, facing the display panel, of the back frame of the backlight module, and the fourth surface is in contact with the surface, facing the backlight module, of the array substrate.
As can be seen from the above technical solutions, the display module provided in the present invention includes: the backlight module, the display panel and the shading piece are arranged in a stacked mode, wherein the surface, facing the backlight module, of the display panel is provided with a lower polarizer, through holes are formed in the lower polarizer and the backlight module, and a blind hole is formed between the lower polarizer and an array substrate of the display panel; the shading piece comprises a shading first part and a shading second part, one surface of the shading first part is in contact with the lower polarizer, one surface of the shading second part is in contact with the array substrate, and the other surface of the shading second part is in contact with the back frame of the backlight module. The shading first part can block light emitted to the blind hole by the backlight module, and light leakage of the backlight module to the blind hole is prevented; the shading second part can prevent the interface between the lower polarizer and the array substrate from generating bright lines, so that a shading structure obtained by adopting a dispensing process in the prior art is replaced; on the first hand, the shading piece comprises the shading first part and the shading second part, and can simultaneously contact the lower polarizer, the array substrate and the back frame, so that the covering is wide, and the problem of light leakage at the position of a blind hole caused by poor dispensing covering can be avoided; in the second aspect, the light-shielding piece is used for replacing a dispensing process, so that the problem of poor display caused by leakage of dispensing and seepage to a display area can be avoided; in the third aspect, the light shielding piece is of a solid structure, so that the assembly is convenient, the assembly process is simplified and the cost is reduced compared with a dispensing process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a display module with a light-shielding tape and two dispensing processes for preventing light leakage at a blind hole position;
fig. 2 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a light shielding member formed by integral molding;
FIG. 4 is an enlarged view of a portion of FIG. 2A;
FIG. 5 is a schematic view of another display module according to an embodiment of the present invention;
FIG. 6 is a partial top view of a blind hole location after a prism layer is disposed;
fig. 7 is a schematic 3D structure diagram of a light shielding member and a supporting portion according to an embodiment of the present invention;
FIG. 8 is a cross-sectional 3D schematic of the structure shown in FIG. 7;
FIG. 9 is a schematic structural view of a display module formed by a backlight module of an integrated plastic-iron structure;
FIG. 10 is a schematic view of another display module formed by a backlight module of an integrated plastic-iron structure;
FIG. 11 is a schematic top view of a light shield formed using a light shield tape and a light shield gasket;
fig. 12 is a schematic structural diagram of a display device provided in an embodiment of the present invention.
Detailed Description
As described in the background section, the problem of light leakage is easily caused at the blind hole position in the display module in the prior art.
The inventor finds that the above phenomenon occurs because, as shown in fig. 1, the structure shown in fig. 1 is a schematic cross-sectional structure diagram of a display module for preventing light leakage at a blind hole position formed by using a light-shielding tape and two dispensing processes; the shading tape 011 is formed between the lower polarizer 012 and the backlight module 013, and is used for shading light emitted from the edge of the black matrix by the backlight module to avoid bright lines; the first dispensing tape 014 is arranged between the lower polarizer 012 and the light-shielding tape 011 and is used for shielding light leakage generated at the interface between the lower polarizer 012 and the array substrate 015; the second dispensing point 016 is formed on the side wall of the first dispensing point 014 and the light shielding tape 011, and a circular sealant is formed at the joint position of the bottom edge and the side wall of the blind hole, and since a gap may exist between the light shielding tape and the backlight module to cause light leakage, the second dispensing point is used for shielding the light leakage between the light shielding tape and the backlight module.
However, in the prior art, two dispensing processes are used, and in the dispensing process, the glue is in a fluid state, so the process yield is low, the dispensing easily permeates into the lower polarizer or between optical films in the backlight module, which causes poor display, the circular hole sealing is poor, the first dispensing and the second dispensing are not connected together, or the dispensing of the lower polarizer is too narrow, which causes light leakage, thereby affecting the display effect, and the process procedures of the two dispensing processes are also complex.
Based on this, the present invention provides a display module, comprising:
the backlight module comprises a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module;
along deviating from backlight unit's direction, display panel includes in proper order: a lower polarizer and an array substrate;
the blind hole at least penetrates through the backlight module and the lower polarizer along the direction vertical to the plane of the display panel;
the shading piece at least comprises a shading first part and a shading second part;
the first shading part comprises a first surface and a second surface which are oppositely arranged, the first surface faces the backlight module, and the second surface is in contact with the surface of the lower polarizer facing the backlight module; the light-shielding second part comprises a third surface and a fourth surface which are oppositely arranged, the third surface is in contact with the surface, facing the display panel, of the back frame of the backlight module, and the fourth surface is in contact with the surface, facing the backlight module, of the array substrate.
According to the display module provided by the invention, the light shading piece is adopted for shading between the backlight module and the display panel, and the light shading piece is of a structure with a fixed shape and is simultaneously contacted with the lower surface of the lower polarizer, the lower surface of the array substrate and the back frame of the backlight module, so that the light shading structure formed by the glue dispensing process in the prior art can be replaced, and the problems of light leakage, low manufacturing yield, difficulty in assembly and the like caused by the glue dispensing process can be avoided.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a display module according to an embodiment of the present invention, including:
the backlight module 10 and the display panel 20 are positioned on one side of the light-emitting surface of the backlight module 10;
along the direction Y that deviates from backlight unit, display panel 20 includes in proper order: a lower polarizer 21, an array substrate 22;
a blind hole 30 at least penetrating through the backlight module 10 and the lower polarizer 21 along a direction perpendicular to the plane of the display panel 20;
the light shielding member 40, the light shielding member 40 includes the light shielding first part 401 and the light shielding second part 402 at least;
the light shielding first portion 401 includes a first surface 401A and a second surface 401B disposed opposite to each other, the first surface 401A faces the backlight module, and the second surface 401B contacts with a surface of the lower polarizer 21 facing the backlight module 10; the light shielding second portion 402 includes a third surface 402A and a fourth surface 402B disposed opposite to each other, the third surface 402A contacts with a surface of the back frame 101 of the backlight module 10 facing the display panel 20, and the fourth surface 402B contacts with a surface of the array substrate 22 facing the backlight module 10.
The display panel further includes a liquid crystal layer 23, a color filter substrate 24, an upper polarizer 25, and a cover plate 26 along the Y direction, as shown in fig. 1, and may further include other structures of the liquid crystal display device, which are not described in detail in this embodiment. It should be noted that, when the camera and/or the optical sensor is placed in the blind hole, in order to avoid the influence of the polarizer on the light sensitivity of the camera and/or the optical sensor, the upper polarizer 25 and the lower polarizer 21 are both provided with through holes corresponding to the blind hole in this embodiment.
In this embodiment, the back frame 101 includes a horizontal portion 101H and a bending portion 101V, wherein the horizontal portion 101H is parallel to a plane where the display panel is located, and the bending portion 101V bends toward the display panel relative to the horizontal portion 101H; the surface of the bent portion 101V facing the blind hole 30 forms a part of the sidewall of the blind hole. In this embodiment, a specific relationship between the bent portion and the horizontal portion is not limited, and alternatively, the bent portion 101V is disposed perpendicular to the extending direction of the horizontal portion 101H. In this embodiment, the thicknesses of the bent portion 101V and the horizontal portion 101H may be the same or different, and for the convenience of simplifying the subsequent manufacturing process, optionally, the thickness of the bent portion 101V is the same as the thickness of the horizontal portion 101H; in order to facilitate the back frame to provide a better supporting function for the light shielding member, and to avoid the display module from being thicker, optionally, the thickness of the bending portion 101V is greater than that of the horizontal portion 101H.
Referring to fig. 2, the backlight module of the present embodiment further includes a multi-layer optical film, the optical film sequentially includes a reflective sheet 107, a light guide plate 103, a diffusion sheet 104, a lower prism sheet 105 and an upper prism sheet 106 from bottom to top, fig. 3 only shows a schematic structure of the multi-layer optical film, and the structure in the drawing does not represent an actual optical film and size. In other embodiments of the present invention, the optical film may further include other structures, which are not limited in this embodiment.
It should be noted that, in this embodiment, a specific structure of the backlight module is not limited, the backlight module 10 may be a direct type backlight module or a side type backlight module, and the two structures of the backlight module are different only in the arrangement positions of the optical film layer and the light source accommodated in the back frame, and the positions of the back frame are the same, which is not described in detail in this embodiment. In the following embodiments, only the edge-type backlight module is taken as an example for explanation, and the direct-type backlight module may be expanded by referring to the edge-type backlight module structure, which is not described in detail in this embodiment.
In this embodiment, the blind holes 30 are formed by through holes penetrating through the backlight module 10 and the lower polarizer 21 and the lower surface of the array substrate 22. The blind hole 30 includes a first hole surrounded by the backlight module and a second hole surrounded by the lower polarizer, the inner diameters of the first hole and the second hole are not limited in this embodiment, and optionally, the inner diameter of the first hole is smaller than the inner diameter of the second hole, so that a light shielding member is arranged on the surface to shield the interface light leakage of the lower polarizer and the array substrate. In addition, the arrangement of the shading piece does not influence the use of the internal structure of the blind hole.
The inner diameter of the first hole is smaller than that of the second hole in this embodiment, and in order to match the blind hole shape, in this embodiment, the thickness of the light-shielding second portion 402 is larger than that of the light-shielding first portion 401 in the Y direction shown in fig. 2. Specifically, the difference between the thickness of the light-shielding first portion 401 and the thickness of the light-shielding second portion 402 is the thickness of the lower polarizer 21, so that the portion of the light-shielding second portion 402, which is larger than the thickness of the light-shielding first portion 401, is exactly the same as the thickness of the lower polarizer 21, and the step formed by the lower polarizer 21 relative to the array substrate 22 is completely filled, thereby avoiding the light leakage problem at the position of the lower polarizer.
It should be noted that, in the present embodiment, the light shielding member is regarded as the light shielding first portion and the light shielding second portion, but actually, the light shielding first portion and the light shielding second portion may be integrally formed by using the same material, as shown in fig. 3, the light shielding member is formed by integrally forming; when the shading first part and the shading second part are made of the same material, the shapes of the shading first part and the shading second part which are of an integral structure are formed by adopting impact-resistant hot melt adhesive punching. On one hand, the impact-resistant hot melt adhesive can provide enough elasticity and impact resistance, and resists extrusion between the backlight module and the display panel in the transportation process of the display module; on the other hand, the hot melt adhesive is a plastic adhesive, is in a solid state at normal temperature, and can be quickly bonded after being heated and melted. The backlight module has the advantages of low cost and strong viscosity, and can bond the gap between the backlight module and the display panel together so as to shield the light emitted from the backlight at the position of the blind hole.
The shading first part is arranged between the optical diaphragm and the lower polarizer of the backlight module, and the upper surface of the shading first part, namely the second surface of the shading first part is contacted with the lower polarizer, the contact means close attachment in the embodiment, so that the shading piece shades the gap light leakage between the lower polarizer and the backlight module.
It should be noted that, because the thickness of the optical film is thin, and the material is easy to expand with heat and contract with cold, in order to avoid the optical film from affecting the light shielding member during the process of expanding with heat and contracting with cold, in this embodiment, the lower surface of the light shielding first portion, that is, the first surface, is only disposed toward the backlight module, and a gap is disposed between the first surface and the optical film of the backlight module, please refer to fig. 4, where fig. 4 is an enlarged view of a partial position shown in fig. 2 a; that is, a gap J is disposed between the surface of the optical film facing the display panel and the first surface 401A, and the thickness of the gap J ranges from 0.02mm to 0.03mm, inclusive. That is to say, backlight unit's optical film piece and the first portion of shading are not contact, closely laminate to at optical film piece expend with heat and contract with cold in-process, can not take the first portion of shading to remove, thereby guaranteed that the shape of the first portion of shading is unchangeable, and then guaranteed the shading effect of the first portion of shading.
It should be noted that, in order to improve the supporting function of the light shielding member, the display module in this embodiment further includes a supporting portion, as shown in fig. 5, the supporting portion 50 is located on a side of the bending portion 101V departing from the blind hole, and the surface of the supporting portion 50 and the back frame facing the display panel is in contact with at least a part of the light shielding second portion 402. Because the supporting portion 50 is disposed on the surface of the back frame of the backlight module, and after being combined with the back frame, the light-shielding second portion 402 is supported in a contact manner, so that the contact area between the light-shielding second portion and the backlight module is increased, and the support for the light-shielding second portion is further improved.
In this embodiment, specific thickness parameters of the supporting portion are not limited, and optionally, the width of the region where the light-shielding second portion 402 contacts the supporting portion 50 and the back frame 101 in the radial direction of the blind hole is greater than or equal to 0.25mm, so as to ensure that the resultant force of the supporting portion 50 and the back frame 101 of the backlight module provides support for the light-shielding second portion, and prevent the light-shielding second portion 402B from deforming in the assembling process.
The concrete material of the supporting part is not limited in this embodiment, optionally, in order to improve the impact strength of structures such as an optical film and a light guide plate in the backlight module at the position of the blind hole, the supporting part is made of an elastic material in this embodiment, and the elastic material can be a polyurethane cotton adhesive tape or rubber, so that the supporting part has good elasticity, good plasticity and a shape required in this embodiment.
It should be noted that the display module may further include a prism layer, as shown in fig. 6, which is a partial top view of the blind hole position after the prism layer is disposed; the prism layer 60 is disposed at a circle deviating from the blind hole 30, the light propagation path at the blind hole position of the backlight module is changed through the prism layer 60, the light intensity at the blind hole backlight side is reduced, bright lines are prevented from appearing, and the light of the blind hole deviating from the backlight side is improved, thereby reducing the dark space deviating from the backlight side, in this embodiment, the specific structure of the prism layer is not limited, optionally, the prism layer may be a prism structure similar to a brightness enhancement film, in order to refract the light of the blind hole towards the backlight side to the backlight side, as shown in fig. 6, the sawtooth structure size of the prism layer close to the backlight side is smaller, the sawtooth structure size of the prism layer deviating from the backlight side is slightly larger, and in the backlight light-emitting direction both sides, that is, the sawtooth structure size of the prism layers at the left and right sides shown in fig. 6 is largest, the sawtooth structures of the plurality of prism, the light near the backlight source is refracted to the side far away from the backlight source, the blind holes are prevented from generating bright lines due to the fact that the blind holes are high in brightness towards the side of the backlight source, and a dark shadow is formed in the area far away from the side of the backlight source.
The prism layer may be a single layer structure, or may be made on the surface of the support portion away from the blind hole, as shown in the prism layer 60 in fig. 5, for convenience of explaining the arrangement position of the prism layer, please refer to fig. 7 and 8, fig. 7 is a schematic 3D structure diagram of the light shielding member and the support portion according to the embodiment of the present invention; fig. 8 is a schematic cross-sectional 3D structure diagram of the structure shown in fig. 7, in which the prism layer 60 is directly formed on the surface of the supporting portion 50 away from the blind hole by a punching process to form a plurality of saw-tooth structures for reflecting light generated by the backlight source, so as to change the light direction and avoid forming bright lines.
In addition, referring to fig. 9, fig. 9 is a schematic structural view of a display module formed by a backlight module adopting a glue-iron integrated structure, when the backlight module 10 includes the glue frame 107, because the cross-sectional area of the glue frame 107 is larger and is disposed on one side of the bending portion deviating from the blind hole, the surface of the glue frame 107 facing the display panel is at least partially contacted with the light-shielding second portion 402 and is tightly attached, so that the glue frame 107 can support the light-shielding member, and a support portion does not need to be separately disposed.
In other embodiments of the present invention, the light-shielding first portion and the light-shielding second portion may be made of different materials. As shown in fig. 9, the light-shielding second portion in this embodiment includes an upper portion 402S contacting the array substrate and a lower portion 402X contacting the back frame, and the upper portion 402S and the lower portion 402X of the light-shielding second portion in this embodiment may be formed by using different materials, for example, the upper portion of the light-shielding second portion and the first portion have the same thickness and are then integrally formed by using a punching process, or, as shown in fig. 10, the lower portion of the light-shielding second portion and the first portion have the same thickness and are integrally formed by using a punching process.
It should be noted that, in the structure shown in fig. 10, since the thicknesses of the lower portions of the light-shielding first portion and the light-shielding second portion are the same, in the assembling process, the lower portions of the light-shielding first portion and the light-shielding second portion can be taken as a whole, and the light-shielding tape is used as the light-shielding structure, and the upper portion of the light-shielding second portion is separately made into the light-shielding gasket, as shown in fig. 11, fig. 11 is a schematic view of a top-view structure of the light-shielding member formed by using the light-shielding tape and. Because the blind hole position adopts the integrative structure of plastic iron, the light leak problem between polaroid and the array substrate under the shading packing ring can improve the blind hole position, and the backlight light leak problem of blind hole position can be improved to the shading sticky tape setting on the integrative frame that glues of plastic iron.
Compared with the structure that the upper parts of the light shielding first part and the light shielding second part have the same thickness and are integrally formed as shown in fig. 9, the structure shown in fig. 10 can prevent the bonding of the light shielding member from being affected by a step formed between the lower polarizer and the array substrate in the assembling process, for example, the bonding is poor due to the generation of bubbles, which affects the bonding quality.
Through the setting of shading sticky tape and shading packing ring, can replace the second way point technology of gluing among the prior art to realize low-cost and solve the problem of blind hole light leak. Because the solid shading adhesive tape and the shading gasket are adopted to replace glue in the glue dispensing process, the problem that poor display is caused because the flowing glue permeates between the lower polarizer and the array substrate in the glue dispensing process does not exist.
Based on the display module provided in the above embodiment of the present invention, an embodiment of the present invention further provides a method for manufacturing a display module, including:
provide backlight unit and display panel, along the direction that deviates from backlight unit, display panel includes in proper order: a lower polarizer and an array substrate;
providing a light shading piece, wherein the light shading piece at least comprises a light shading first part and a light shading second part, the light shading first part comprises a first surface and a second surface which are oppositely arranged, and the second surface is used for being in contact with the surface of the lower polarizer facing the backlight module; the shading second part comprises a third surface and a fourth surface which are oppositely arranged, the third surface is used for being in contact with the surface, facing the display panel, of the back frame of the backlight module, and the fourth surface is used for being in contact with the surface, facing the backlight module, of the array substrate;
contacting the third surface of the shading second part with a back frame of the backlight module;
and contacting the lower polarizer of the display panel with the second surface of the shading first part, and contacting the array substrate of the display panel with the fourth surface of the shading second part.
In this embodiment, after providing the backlight module and the display panel, the light-shielding member is provided, and the light-shielding member is first contacted with the back frame of the backlight module, i.e., the light-shielding member and the backlight module are assembled in advance, and then the display panel is assembled. When the display module further includes a supporting portion and a prism layer, the prism layer may be fabricated on a surface of the supporting portion, then the light shielding member is assembled with the supporting portion, as shown in fig. 2, then the assembled supporting portion is placed in a back frame of the backlight, at the same time, a third surface of the light shielding second portion contacts with the back frame of the backlight module, finally, the array substrate of the display panel contacts with a fourth surface of the light shielding second portion, a second surface of the light shielding first portion contacts with a surface of a lower polarizer of the display panel, and finally, the display module is formed.
The light shading piece is in a non-fluid state structure and can be directly contacted with the backlight module and the display panel, so that the problems of light leakage, difficulty in assembly and the like caused by insufficient coverage due to a fluid dispensing process are solved; moreover, the light-shading piece is contacted and assembled with the backlight module through a line, the display panel is assembled again, and the display panel and the backlight module can press the light-shading piece together, so that the light-shading piece is contacted with the display panel and the backlight module, gaps are avoided, and the light-shading effect of the light-shading piece is ensured.
Based on the same inventive concept, the present invention further provides a display device, as shown in fig. 12, fig. 12 is a schematic structural view of the display device provided in the embodiment of the present invention, where the display device 100 includes the display module described in the above embodiment, and a blind hole 30 is disposed in the display module, it should be noted that, in this embodiment, only the blind hole 30 is located at the upper left corner of the display device for example, in other embodiments of the present invention, the blind hole 30 may also be disposed in the middle above the display device, or at the lower left corner, and the like, which is not described in detail in this embodiment.
The embodiment of the display device in this embodiment can refer to the embodiment of the display module, and details are not repeated in this embodiment. In this embodiment, a specific structure of the display device is not limited, and the display device may be any product or component having a liquid crystal display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
Optionally, the display device provided in the embodiment of the present invention further includes a camera and/or an optical sensor, and the camera and/or the optical sensor are located in the blind hole 30, so as to meet the requirements of consumers on the display device in social development, and at the same time, improve the practicability of the display device. And the full-screen display and the high integration of the display device are facilitated.
The shading part structure provided by the embodiment of the invention replaces the glue dispensing formed by the glue dispensing process in the prior art, and can avoid the display problems caused by high cost and easy leakage caused by the glue dispensing process and the light leakage of a blind hole.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (23)

1. A display module, comprising:
the backlight module comprises a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module;
along deviating from backlight unit's direction, display panel includes in proper order: a lower polarizer and an array substrate;
the blind hole at least penetrates through the backlight module and the lower polarizer along the direction vertical to the plane of the display panel;
the shading piece at least comprises a shading first part and a shading second part;
the first shading part comprises a first surface and a second surface which are oppositely arranged, the first surface faces the backlight module, and the second surface is in contact with the surface of the lower polarizer facing the backlight module; the light-shielding second part comprises a third surface and a fourth surface which are oppositely arranged, the third surface is in contact with the surface, facing the display panel, of the back frame of the backlight module, and the fourth surface is in contact with the surface, facing the backlight module, of the array substrate.
2. The display module according to claim 1, wherein the blind holes comprise a first hole surrounded by the backlight module and a second hole surrounded by the lower polarizer.
3. The display module of claim 2, wherein an inner diameter of the first aperture is smaller than an inner diameter of the second aperture.
4. The display module of claim 3, wherein the light-shielding second portion has a thickness greater than a thickness of the light-shielding first portion in a direction perpendicular to a plane of the display panel.
5. The display module according to claim 4, wherein the difference between the thicknesses of the light-shielding first portion and the light-shielding second portion is the thickness of the lower polarizer.
6. The display module according to claim 1, wherein the back frame of the backlight module comprises a horizontal portion and a bent portion, and the bent portion forms a sidewall of the blind hole; the horizontal part is parallel to the plane of the display panel.
7. The display module according to claim 6, wherein the display module further comprises a support portion, the support portion is located on a side of the bending portion away from the blind hole; the surface of the support part and the back frame facing the display panel is in contact with at least part of the light-shielding second part.
8. The display module according to claim 7, wherein a width of a region where the light shielding second portion contacts the support portion and the back frame in a radial direction of the blind hole is greater than or equal to 0.25 mm.
9. The display module of claim 7, wherein the support portion is made of an elastic material.
10. The display module of claim 9, wherein the elastic material comprises polyurethane foam tape or rubber.
11. The display module according to claim 7, further comprising a prism layer on a side of the support portion facing away from the blind hole.
12. The display module according to claim 11, wherein the prism layer is located on a surface of the support portion.
13. The display module of claim 1, wherein the light blocking first portion is integrally formed with the light blocking second portion.
14. The display module of claim 1, wherein the light blocking second portion comprises an upper portion in contact with the array substrate and a lower portion in contact with the back frame.
15. The display module of claim 14, wherein the lower portion has the same thickness as the light blocking first portion and is integrally formed therewith.
16. The display module of claim 14, wherein the upper portion has the same thickness as the light blocking first portion and is integrally formed therewith.
17. The display module of claim 1, wherein the backlight module comprises an optical film, and a gap exists between a surface of the optical film facing the display panel and the first surface.
18. The display module of claim 17, wherein the gap ranges from: 0.02mm-0.03mm, inclusive.
19. The display module assembly according to claim 1, wherein the material of the light-shielding second portion is a hot melt adhesive.
20. The display module according to claim 1, wherein the backlight module further comprises a plastic frame, the plastic frame is located on a side of the bending portion away from the blind hole, and a surface of the plastic frame facing the display panel is at least partially attached to the light-shielding second portion.
21. The display module of claim 1, wherein the light blocking first portion and the light blocking second portion are formed by a die cutting process.
22. A method for manufacturing a display module, wherein the display module is the display module according to any one of claims 1 to 21;
providing a backlight module and a display panel, wherein the display panel sequentially comprises: a lower polarizer and an array substrate;
providing a light shielding piece, wherein the light shielding piece at least comprises a light shielding first part and a light shielding second part, the light shielding first part comprises a first surface and a second surface which are oppositely arranged, and the second surface is used for being in contact with the surface of the lower polarizer facing the backlight module; the shading second part comprises a third surface and a fourth surface which are oppositely arranged, the third surface is used for being in contact with the surface, facing the display panel, of the back frame of the backlight module, and the fourth surface is used for being in contact with the surface, facing the backlight module, of the array substrate;
contacting the third surface of the shading second part with a back frame of the backlight module;
and contacting the lower polarizer of the display panel with the second surface of the shading first part, and simultaneously contacting the array substrate of the display panel with the fourth surface of the shading second part.
23. A display device, comprising: the display module of any one of claims 1-21.
CN202010589003.9A 2020-06-24 2020-06-24 Display module, manufacturing method thereof and display device Active CN111610658B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010589003.9A CN111610658B (en) 2020-06-24 2020-06-24 Display module, manufacturing method thereof and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010589003.9A CN111610658B (en) 2020-06-24 2020-06-24 Display module, manufacturing method thereof and display device

Publications (2)

Publication Number Publication Date
CN111610658A true CN111610658A (en) 2020-09-01
CN111610658B CN111610658B (en) 2023-03-17

Family

ID=72194259

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010589003.9A Active CN111610658B (en) 2020-06-24 2020-06-24 Display module, manufacturing method thereof and display device

Country Status (1)

Country Link
CN (1) CN111610658B (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205485160U (en) * 2016-01-08 2016-08-17 昆山龙显电子有限公司 No frame LCD module
CN107707695A (en) * 2017-09-29 2018-02-16 努比亚技术有限公司 Screen, terminal device and preparation method thereof comprehensively
CN108681131A (en) * 2018-07-27 2018-10-19 厦门天马微电子有限公司 Display device
CN108983495A (en) * 2018-08-02 2018-12-11 厦门天马微电子有限公司 A kind of backlight module and display device
CN209028373U (en) * 2018-11-30 2019-06-25 Oppo广东移动通信有限公司 Display screen component and electronic equipment
CN110361881A (en) * 2019-07-15 2019-10-22 Oppo（重庆）智能科技有限公司 Display module and electronic equipment
CN110426878A (en) * 2019-07-16 2019-11-08 武汉华星光电技术有限公司 Display device
CN110579898A (en) * 2019-09-23 2019-12-17 武汉华星光电技术有限公司 display module and dispensing method thereof
CN110716340A (en) * 2019-09-23 2020-01-21 武汉华星光电技术有限公司 Display device, electronic equipment and manufacturing method of display device
CN110796954A (en) * 2019-11-11 2020-02-14 厦门天马微电子有限公司 Display module, manufacturing method thereof and display device
US20200064541A1 (en) * 2018-08-27 2020-02-27 Lg Display Co., Ltd. Display Device
CN110888261A (en) * 2018-12-07 2020-03-17 鸿富锦精密工业（深圳）有限公司 Display panel and display device
CN210348142U (en) * 2019-08-19 2020-04-17 深圳市隆利科技股份有限公司 Backlight module with through hole

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205485160U (en) * 2016-01-08 2016-08-17 昆山龙显电子有限公司 No frame LCD module
CN107707695A (en) * 2017-09-29 2018-02-16 努比亚技术有限公司 Screen, terminal device and preparation method thereof comprehensively
CN108681131A (en) * 2018-07-27 2018-10-19 厦门天马微电子有限公司 Display device
CN108983495A (en) * 2018-08-02 2018-12-11 厦门天马微电子有限公司 A kind of backlight module and display device
US20200064541A1 (en) * 2018-08-27 2020-02-27 Lg Display Co., Ltd. Display Device
CN209028373U (en) * 2018-11-30 2019-06-25 Oppo广东移动通信有限公司 Display screen component and electronic equipment
CN110888261A (en) * 2018-12-07 2020-03-17 鸿富锦精密工业（深圳）有限公司 Display panel and display device
CN110361881A (en) * 2019-07-15 2019-10-22 Oppo（重庆）智能科技有限公司 Display module and electronic equipment
CN110426878A (en) * 2019-07-16 2019-11-08 武汉华星光电技术有限公司 Display device
CN210348142U (en) * 2019-08-19 2020-04-17 深圳市隆利科技股份有限公司 Backlight module with through hole
CN110716340A (en) * 2019-09-23 2020-01-21 武汉华星光电技术有限公司 Display device, electronic equipment and manufacturing method of display device
CN110579898A (en) * 2019-09-23 2019-12-17 武汉华星光电技术有限公司 display module and dispensing method thereof
CN110796954A (en) * 2019-11-11 2020-02-14 厦门天马微电子有限公司 Display module, manufacturing method thereof and display device

Also Published As

Publication number Publication date
CN111610658B (en) 2023-03-17

Similar Documents

Publication Publication Date Title
CN211180477U (en) Display panel and display device
CN110634400A (en) Backlight module, display device and manufacturing method of backlight module
JP6188935B2 (en) Display device
US10969625B2 (en) Liquid crystal display device having high screen ratio
US20100245707A1 (en) Protection plate integrated display apparatus
WO2016176929A1 (en) Backlight module and liquid crystal display
CN210465916U (en) Liquid crystal display device having a plurality of pixel electrodes
CN111708206B (en) Touch display module, manufacturing method thereof and display device
US10488690B2 (en) Display device and assembling method thereof
WO2010116569A1 (en) Display device and method for manufacturing same
CN108181758B (en) Shading double-sided tape and display device
CN110796954A (en) Display module, manufacturing method thereof and display device
JP2009169320A (en) Liquid crystal display
US20200174310A1 (en) Liquid crystal display device
CN114399959B (en) Display device and tiled display device
US10545362B2 (en) Display device
WO2017024756A1 (en) Light bar, backlight module and assembly method thereof, and display device
CN104698659A (en) Liquid crystal display module and assembly method thereof
CN111610658B (en) Display module, manufacturing method thereof and display device
US10295729B2 (en) Liquid crystal display device
CN110967856A (en) Display module, manufacturing method thereof and display device
CN111679503A (en) Backlight module and display device
CN213240761U (en) Display panel and display device
CN213338276U (en) Backlight module, narrow-frame display device and display terminal
CN210776107U (en) Light leakage prevention liquid crystal display module

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant