CN109116621B - Display module and display device - Google Patents

Display module and display device Download PDF

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Publication number
CN109116621B
CN109116621B CN201811150355.3A CN201811150355A CN109116621B CN 109116621 B CN109116621 B CN 109116621B CN 201811150355 A CN201811150355 A CN 201811150355A CN 109116621 B CN109116621 B CN 109116621B
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China
Prior art keywords
display panel
display
hole
frame
backlight module
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CN201811150355.3A
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CN109116621A (en
Inventor
谢天旭
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133512Light shielding layers, e.g. black matrix
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1339Gaskets; Spacers; Sealing of cells

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

Abstract

The invention discloses a display module and a display device, wherein the display module comprises a backlight module and a display panel which are oppositely arranged, and further comprises a through hole, and the through hole at least penetrates through the backlight module; the backlight module comprises a light source, at least one layer of optical film, at least one rubber frame and at least one shading adhesive tape; the through hole at least comprises a top part and a bottom part, the rubber frame at least comprises a first side surface and a first surface, and an included angle between the first surface and the first side surface is an acute angle; the shading tape comprises a first shading part and an extension shading part which are integrally formed, the first shading part is attached to one side, close to the display panel, of the glue frame, and the extension shading part is attached to the first side face. The display device comprises the display module. The backlight module avoids light leakage of the backlight module at the through hole through the rubber frame arranged around the through hole and the shading adhesive attached to the rubber frame, and can also facilitate the attachment of the shading adhesive tape along the first side surface of the rubber frame, thereby improving the light leakage of the rubber frame.

Description

Display module and display device
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
In recent years, with the development of display technology, various displays have been produced, such as liquid crystal display devices and organic light emitting display devices, which are becoming mainstream products in the display industry at present and are generally favored by consumers, and therefore, research on displays has become one of the research hotspots in the scientific field. The liquid crystal display device has advantages of lightness, thinness, low power consumption, low radiation, and the like, and is widely applied to various fields. A liquid crystal display device generally includes a liquid crystal display panel and a backlight unit assembly for mainly changing an electric light source into a surface light source to provide a sufficient brightness of the liquid crystal display panel. With the development of display screen technology, a comprehensive screen is produced, and compared with an ordinary display screen, the display area has a larger occupation ratio and an ultra-narrow frame, so that the visual perception of a viewer can be greatly improved. However, since a camera or the like is to be placed in the display screen, a hole area needs to be provided in the entire screen.
In the prior art, due to the nature of the rubber frame, the light leakage phenomenon of the rubber frame at the hole digging area is often caused in the hole digging area at the backlight unit, so that the normal use of devices placed in the hole digging area is influenced.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a display module and a display device that not only have high reliability, but also can improve light leakage of a rubber frame at a hole.
Disclosure of Invention
In view of the above, the present invention provides a display module, including: the backlight module and the display panel are oppositely arranged, and the display panel also comprises a through hole which at least penetrates through the backlight module; the backlight module comprises a light source, at least one layer of optical film, at least one rubber frame and at least one shading adhesive tape; the through hole at least comprises a top part and a bottom part, in the direction vertical to the display panel, the top part is the side of the through hole close to the display panel, and the bottom part is the side of the through hole far away from the display panel; the glue frame extends along the direction from the bottom to the top, the glue frame at least comprises a first side surface and a first surface, the first surface is parallel to the direction of the display panel and is positioned on one side of the glue frame away from the display panel, and the included angle between the first surface and the first side surface is an acute angle; the shading tape comprises a first shading part and an extension shading part which are integrally formed, the first shading part is attached to one side, close to the display panel, of the glue frame, and the extension shading part is attached to the first side face.
Based on the same principle, the invention also provides a display device which comprises the display module.
Compared with the prior art, the display module and the display device provided by the invention at least realize the following beneficial effects:
the display module of the embodiment comprises a backlight module and a display panel which are oppositely arranged, wherein the display module is also provided with a through hole which at least penetrates through the backlight module and is used for placing some auxiliary components of the display module, and the light leakage of the backlight module at the through hole is avoided by a rubber frame which is arranged around the through hole and a shading rubber which is attached to the rubber frame, so that the performance of the auxiliary components placed in the through hole is not influenced; the glue frame is designed to extend along the direction of the top pointing to the bottom of the through hole, the included angle between the first surface and the first side face is an acute angle, the first surface is parallel to the direction of the display panel and is located on one side, away from the display panel, of the glue frame, and the first side face is the side face, extending along the direction of the top pointing to the bottom, of the glue frame and facing the through hole. Because if this contained angle is the right angle or obtuse angle, when the shading sticky tape extends from between backlight unit and the display panel and sticks to gluing the frame, be difficult to stick to on the first side of gluing the frame, and probably because the influence of shading sticky tape thickness or material takes place the warpage, the manufacturability is poor, causes the shading sticky tape and sticks badly the problem. The contained angle of this embodiment first surface and first side is the acute angle, can also make the shading sticky tape along the first side of gluing the frame is attached, covers gluey frame gradually to improve gluey frame light leak.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 4 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 5 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 6 is a schematic view of another cross-sectional structure taken along line A-A' of FIG. 1;
FIG. 7 is a schematic view of the structure of the cross section B-B' of FIG. 1;
FIG. 8 is a schematic view of a cross-sectional view B-B' of FIG. 1;
FIG. 9 is an enlarged partial view of FIG. 8;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a cross-section along a-a' direction of fig. 1, and a display module according to an embodiment of the present invention includes: the backlight module 10 and the display panel 20 are oppositely arranged, and the display panel further comprises a through hole 30, and the through hole 30 at least penetrates through the backlight module 10;
the backlight module 10 includes a light source (not shown in the drawings, the structure and the installation position of the light source are not specifically limited in this embodiment), at least one layer of optical film 12 (not filled in the drawings), at least one adhesive frame 13 and at least one light-shielding adhesive tape 14;
the through hole 30 at least comprises a top part 301 and a bottom part 302, wherein in the direction perpendicular to the display panel 20, the top part 301 is the side of the through hole 30 close to the display panel 20, and the bottom part 302 is the side of the through hole 30 far from the display panel 20;
the rubber frame 13 extends along a direction from the bottom 302 to the top 301, the rubber frame 13 at least includes a first side surface 131 and a first surface 132, the first surface 132 is parallel to the direction of the display panel 20 and is located on a side of the rubber frame 13 away from the display panel 20, and an included angle α between the first surface 132 and the first side surface 131 is an acute angle;
the light shielding tape 14 includes a first light shielding portion 141 and an extended light shielding portion 142 that are integrally formed, the first light shielding portion 141 is attached to the side of the bezel 13 close to the display panel 20, and the extended light shielding portion 142 is attached to the first side surface 131.
Specifically, the display module of the present embodiment includes a backlight module 10 and a display panel 20 which are oppositely disposed, the display module is further provided with a through hole 30 penetrating through the backlight module 10 at least for placing some auxiliary components of the display module, and the light leakage of the backlight module 10 at the through hole 30 is avoided by a rubber frame 13 surrounding the through hole 30 and a light-shielding adhesive tape 14 attached on the rubber frame 13, so as not to affect the performance of the auxiliary components placed in the through hole 30; in this embodiment, the plastic frame 13 is designed to extend along a direction pointing to the top 301 from the bottom 302 of the through hole 30, an included angle α between the first surface 132 and the first side surface 131 is an acute angle, wherein the first surface 132 is parallel to the direction of the display panel 20 and is located on a side of the plastic frame 13 away from the display panel 20, and the first side surface 131 is a side surface of the plastic frame 13 extending along the direction pointing to the top 301 from the bottom 302 and facing the through hole 30. If the included angle α is a right angle or an obtuse angle, the light-shielding tape 14 is difficult to be attached to the first side 131 of the frame 13 when extending from between the backlight module 10 and the display panel 20 and attaching to the frame 13, and the light-shielding tape 14 is likely to be warped due to the thickness or material of the light-shielding tape 14, resulting in poor manufacturability and poor attachment of the light-shielding tape 14. In this embodiment, the included angle α between the first surface 132 and the first side surface 131 is an acute angle, and the light-shielding tape 14 can be further attached along the first side surface 131 of the plastic frame 13 to gradually cover the plastic frame 13, thereby improving light leakage of the plastic frame 13.
It should be noted that, the through hole 30 of the embodiment may only penetrate through the backlight module 10 as shown in fig. 2, or may be as shown in fig. 3, fig. 3 is another schematic cross-sectional structure along a-a 'direction of fig. 1, the through hole 30 penetrates through the backlight module 10 and a part of the film layers of the display panel 20, or may be as shown in fig. 4, fig. 4 is another schematic cross-sectional structure along a-a' direction of fig. 1, the through hole 30 penetrates through all the film layers of the backlight module 10 and the display panel 20, and the position where the through hole 30 is disposed may be any position on the display module, which is not limited in the embodiment.
When the through hole 30 only penetrates through the backlight module 10, or the through hole 30 penetrates through the backlight module 10 and a part of the film layers of the display panel 20, the film layers of the display panel 20 in the vertical projection area of the display panel 20 from the through hole 30 can be set to be transparent, so that the display effect of the display panel 20 can be improved.
Moreover, in any structure in which the through hole 30 penetrates through part of the film layers of the backlight module 10 and the display panel 20, or the through hole 30 penetrates through all the film layers of the backlight module 10 and the display panel 20, the design structure of the rubber frame 13 may continue to extend along the direction from the bottom 302 of the through hole 30 to the top 301 (as shown in fig. 4) until the side of the rubber frame 13 away from the first surface 132 reaches the position of the top 301 of the through hole 30, and the light leakage is further improved by the attachment of the light shielding tape 14. The frame 13 may also extend only to the area where the backlight module 10 is located, and the light leakage is further improved by attaching the light-shielding tape 14 (as shown in fig. 2 and 3).
It should be further noted that, as shown in fig. 2 to fig. 4, a side of the rubber frame 13 away from the first surface 131 may be a plane, and may also be a curved surface or an uneven surface due to process limitations, or may be a pointed structure, only an included angle α between the first surface 132 and the first side surface 131 needs to be an acute angle, so that the light-shielding tape 14 is convenient to attach, and the attaching effect and light leakage can be improved, which is not specifically limited herein.
In some alternative embodiments, with continued reference to fig. 2-4, the first surface 132 is angled from the first side 131 by an angle α in the range of 30-60 °.
In order to consider the difficulty of attaching the light-shielding tape 14 and the difficulty of molding the plastic frame 13, the present embodiment further limits the included angle α between the first surface 132 and the first side surface 131 within the range of 30 ° to 60 °, so as to facilitate the attachment of the light-shielding tape 14 on the premise of improving the light leakage of the plastic frame 13, thereby reducing the process difficulty and improving the production efficiency. In addition, in the embodiment, the included angle α is limited within the range of 30 ° to 60 °, which not only facilitates molding of the adhesive frame 13, but also facilitates attachment of the light-shielding adhesive tape 14 when the light-shielding adhesive tape 14 is attached to the surface of the adhesive frame 13, and prevents attachment deviation.
In some optional embodiments, please continue to refer to fig. 2-4, in the embodiment, in the direction perpendicular to the display panel 20, the height of the plastic frame 13 is h, the height of the display panel 20 is h1, the height of the backlight module 10 is h2, and h2 is not less than h1+ h 2.
The embodiment further illustrates that, in the direction perpendicular to the display panel 20, no matter what structure the through hole 30 penetrates through the backlight module 10 and the display panel 20 belongs to in fig. 2 to fig. 4, the height h of the rubber frame 13 may be equal to the height h2 of the backlight module 10, or may be greater than the height h2 of the backlight module 10 and smaller than the sum of the height h1 of the display panel 20 and the height h2 of the backlight module 10, but the height h of the rubber frame 13 is at most equal to the sum of the height h1 of the display panel 20 and the height h2 of the backlight module 10.
It should be noted that, this embodiment only exemplifies the height of the rubber frame 13, and may also be other height structures capable of improving light leakage and facilitating to improve the attaching effect of the light shielding tape 14 in this embodiment, which is not described herein again.
In some optional embodiments, referring to fig. 5, fig. 5 is another schematic cross-sectional view along the direction a-a' of fig. 1, in this embodiment, the backlight module 10 includes a multilayer optical film 12 (not filled), the multilayer optical film 12 includes a reflective sheet 121, a light guide plate 122, a diffusion sheet 123, and a brightness enhancement sheet 124 stacked in sequence along the direction of the backlight module 10 pointing to the display panel 20, the bezel 13 is located on one side of the reflective sheet 121 close to the display panel 20, and the first surface 132 of the bezel 13 is fixedly connected to the reflective sheet 121.
The reflective sheet 121 is generally formed by printing or attaching a white reflective layer or a silver reflective layer on a transparent PET (polyethylene terephthalate) substrate, and attaching PET protective films on both sides of the reflective sheet 121, and the reflective sheet 121 functions to reflect light to a desired surface as efficiently as possible. The light guide plate 122 functions to guide a scattering direction of light, to improve the brightness of the panel, and to ensure uniformity of the brightness of the panel. The diffusion sheet 123 generally uses PMMA (polymethyl methacrylate) diffusion particles to irregularly refract light, so that an effective uniformity is generated in a surface light source, and according to the difference in haze (which is a percentage of the transmitted light intensity deviating from the incident light by an angle of more than 2.5 degrees to the total transmitted light intensity, and the greater the haze is, the lower the transparency is, and is an important parameter of optical transparency of a transparent or semitransparent material), the diffusion sheet 123 is divided into an upper diffusion sheet and a lower diffusion sheet, and the upper diffusion sheet and the lower diffusion sheet have substantially the same structure and both have an antistatic property, and the lower diffusion sheet further has an anti-sticking function. The brightness enhancement film 124 is used to change the direction of the polarized light from each direction to the vertical direction, and is brightest when the human eye looks vertical to the surface of the light guide plate 122.
It should be noted that, this embodiment is only an example of the structure included in the multilayer optical film 12, but is not limited to the above structure, and in the actual production process, other structures of the multilayer optical film 12 that can achieve the same or similar effect may be designed according to different requirements, and this embodiment is not described herein again.
In this embodiment, the first surface 132 of the rubber frame 13 and the reflective sheet 121 can be fixedly connected by a double-sided adhesive tape, but not limited to this connection manner, and other connection manners capable of achieving the same or similar fixing effect may also be used, and this embodiment is not limited specifically herein.
In some alternative embodiments, referring to fig. 6, fig. 6 is another cross-sectional structure view along the direction a-a' of fig. 1, in the present embodiment, a first component 40 is disposed in the through hole 30.
The embodiment further illustrates that the first component 40 with the auxiliary function, such as a camera, an illumination device, etc., can be placed in the through hole 30 formed in the display module, which is beneficial to realizing the function diversification of the full-screen display device, and the first component 40 with the auxiliary function does not occupy the display area of the display device. It should be noted that the first component 40 of the present embodiment may be a camera, an illumination device, or other functional components, and the present embodiment is not limited in detail herein.
In some optional embodiments, please refer to fig. 6, in order to facilitate the assembly of the first component 40, in the direction parallel to the display panel 20, the distance between the first component 40 and the plastic frame 13 is d1, and d1 is greater than or equal to 0.15mm and less than or equal to 0.3mm, so that the design can leave enough space in the through hole 30 to facilitate the placement of the first component 40, and during the assembly, the component is not damaged by the extrusion due to the too close distance between the first component 40 and the plastic frame 13, which may affect the yield of the product.
In some optional embodiments, please refer to fig. 6, the display module 20 of the present embodiment further includes a cover plate 50, and the cover plate 50 is located on a side of the display panel 20 away from the backlight module 10.
The display panel 20 of the present embodiment may include a lower polarizer 201, an array substrate 202 (unfilled), a color filter substrate 203, and an upper polarizer 204 (unfilled), and the cover plate 50 of the present embodiment is located on a side of the upper polarizer 204 away from the backlight module 10, that is, the cover plate 50 shown in fig. 6 is disposed on a side of the display panel 20 away from the backlight module 10, so as to protect the display module including the display panel 20 and the backlight module 10. It should be noted that, since the through hole 30 may only penetrate through the backlight module 10, or may penetrate through partial film layers of the backlight module 10 and the display panel 20 (such as any one layer or a combination of adjacent layers of the polarizer 201, the array substrate 202, the color film substrate 203, and the upper polarizer 204), or may penetrate through all film layers of the backlight module 10 and the display panel 20, fig. 6 of this embodiment merely illustrates the position and structure of the cover plate 50 by using the through hole 30 to penetrate through all film layers of the backlight module 10 and the display panel 20, and a person skilled in the art may draw another schematic diagram in which two other through holes 30 penetrate through different film layers according to the illustration in fig. 6, which is not described herein again. It should be further noted that the present embodiment is only an example of the film structure that the display panel 20 may include, but is not limited to this structure, and the present embodiment is not limited to the display panel 20 with other structures.
Please refer to fig. 6, in an actual production process, according to different design requirements, the position of the cover plate 50 of the present embodiment may also be set as a touch structure layer to implement a touch function of the display device, and the touch structure layer of this structure may not be integrally disposed between the film layers of the display panel, but is separately attached to the display panel. The touch structure layer and the display panel 20 may be electrically connected through the optical adhesive 60, or may be electrically connected through other methods, and the embodiment is not limited in this respect.
In some alternative embodiments, please continue to refer to FIG. 6, in the present embodiment, the distance between the first member 40 and the cover plate 50 in the direction perpendicular to the display panel 20 is d2, and d2 is 0.2mm ≦ 0.4 mm.
The embodiment further defines that the distance d2 between the first component 40 and the cover plate 50 is greater than or equal to 0.2mm and less than or equal to 0.4mm in the direction perpendicular to the display panel 20, so that a certain gap is left between the surface of the cover plate 50 close to the first component 40 and the first component 40, component damage caused by assembly tolerance and process limitation is prevented, and the product yield is improved.
In some alternative embodiments, please refer to fig. 1 and 7, fig. 7 is a schematic sectional view taken along direction B-B' of fig. 1, in this embodiment, the display panel 20 includes a display area AA and a non-display area NA, a vertical projection of the through hole 30 to the display panel 20 is located in the non-display area NA, and the display area AA is disposed around the non-display area NA;
the vertical projection of the light shielding tape 14 to the display panel 20 is located within the non-display area NA.
In order to achieve good display effect and display quality of the display panel 20, in the embodiment, it is further defined that the vertical projection of the through hole 30 to the display panel 20 and the vertical projection of the light shielding tape 14 to the display panel 20 are both located in the non-display area NA.
In the actual manufacturing, considering the cutting tolerance and the attaching tolerance of the light shielding tape 14, the distance between the edge of the first light shielding portion 141 on the side away from the non-display area NA and the edge of the display area AA in the direction parallel to the display panel 20 is d3, so that d3 is 0.15mm or more and 0.35mm or less. That is, a distance d3 is reserved between the edge of the first light-shielding portion 141 on the side away from the non-display area NA and the edge of the display area AA, so that it can be better ensured that the vertical projection of the light-shielding tape 14 to the display panel 20 is located within the range of the non-display area NA and does not enter the range of the display area AA, thereby preventing the display quality of the display panel 20 from being affected by the arrangement of the through hole 30 and the light-shielding tape 14.
In some alternative embodiments, please refer to fig. 8, fig. 8 is a schematic cross-sectional view taken from B-B' of fig. 1 to another cross-sectional view, in this embodiment, the backlight module 10 further includes an iron frame 15, and the iron frame 15 is located on a side of the optical film 12 away from the display panel 20; the iron frame 15 is fixedly connected with the first side 131 and the first surface 132 of the rubber frame 13;
the bezel 15 includes a first portion 151, a bent portion 152, and a second portion 153, which are integrally formed, one end of the bent portion 152 is connected to the first portion 151, the other end of the bent portion 152 is connected to the second portion 153, the first portion 151 is overlapped with the extended light shielding portion 142, and the second portion 153 is parallel to the optical film 12.
The embodiment further illustrates that the light source, the rubber frame 13 and the optical film 12 of the backlight module 10 are all disposed in the bezel 15 including the first portion 151, the bending portion 152 and the second portion 153, so as to provide a reliable carrier for the components of the backlight module 10, and the bezel 15 made of metal can further avoid light leakage. The bending portion 152 of the present embodiment may be a curved surface structure, so that the transition between the first portion 151 and the second portion 152 is smoother, and the influence of burrs or sharp corners on the quality of the bezel 15 can be avoided.
It should be noted that, the fixing connection manner of the rubber frame 13 and the iron frame 15 in this embodiment may be that the rubber frame 13 and the iron frame 15 are connected by being embedded into each other, the rubber frame 13 and the iron frame 15 are fixedly connected by being attached by a double-sided adhesive tape, the rubber frame 13 and the iron frame 15 are integrally formed by an injection molding process, or other fixing manners that can achieve the same or similar effect, and this embodiment is not limited specifically herein.
In some alternative embodiments, please continue to refer to FIG. 8, in the present embodiment, the width of the overlapping of the first portion 151 and the extended shading portion 142 is L, and L is greater than or equal to 0.15mm and less than or equal to 0.3 mm.
The embodiment further defines that the width of the overlapping between the first portion 151 and the extending and shading portion 142 is 0.15mm ≦ L ≦ 0.3mm, theoretically, the extending and shading portion 142 of the shading tape 14 only needs to cover the bezel 15 to cover the glue frame 13 to avoid light leakage, but in the actual production process, considering the actual attachment tolerance of the shading tape 14, the range of the extending and shading portion 142 covering the first portion 151 of the bezel 15 may be designed as 0.15-0.3 mm, that is, the overlapping width of the first portion 151 and the extending and shading portion 142 is designed as 0.15mm ≦ L ≦ 0.3 mm.
It should be noted that the thickness range of the light-shielding tape 14 of the present embodiment may be set to be 0.03-0.06mm, although the thicker light-shielding tape 14 has good viscosity, when the adhesive frame 13 of the present embodiment is attached, in which the included angle α between the first surface 132 and the first side surface 131 is an acute angle, the attachment is not very reliable, and the thickness of the entire display device is affected, so in consideration of the adhesion viscosity and the thinning of the entire display device, the light-shielding tape 14 having a thickness range of 0.03-0.06mm is selected in the present embodiment.
In some alternative embodiments, please refer to fig. 9, where fig. 9 is a partially enlarged view of fig. 8, in the embodiment, in a direction perpendicular to the display panel 20, an end M of the first portion 151 away from the bending portion 152 is located at a middle position of the first side surface 131.
In this embodiment, it is further limited that the end M of the first portion 151 away from the bending portion 152 is located at the middle position of the first side surface 131 in the direction perpendicular to the display panel 20, because if the end M of the first portion 151 away from the bending portion 152 exceeds the middle position of the first side surface 131, that is, the first portion 151 of the bezel 15 is very wide, it is likely that the first portion 151 is too wide and is not easy to be formed, and the edge is easily burred and uneven, which is not beneficial to product assembly, and if the end M of the first portion 151 away from the bending portion 152 does not reach the middle position of the first side surface 131, that is, the first portion 151 of the bezel 15 is very narrow, the bezel 15 and the light shielding tape 14 can not wrap the rubber frame 13 at the same time, thereby improving the effect of light leakage.
In some optional embodiments, the invention further provides a display device comprising the display module provided by the invention. Referring to fig. 10, fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the display device 1000 according to the embodiment includes the display module 1001 according to any one of the embodiments of the present invention. The embodiment of fig. 10 is only an example of a mobile phone, and the display device 1000 is described, it is to be understood that the display device 1000 provided in the embodiment of the present invention may be another display device 1000 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the display module 1001 provided in the embodiment of the present invention, and specific descriptions on the display module 1001 in the above embodiments may be specifically referred to, and no further description is given here.
According to the embodiment, the display module and the display device provided by the invention at least realize the following beneficial effects:
the display module of the embodiment comprises a backlight module and a display panel which are oppositely arranged, wherein the display module is also provided with a through hole which at least penetrates through the backlight module and is used for placing some auxiliary components of the display module, and the light leakage of the backlight module at the through hole is avoided by a rubber frame which is arranged around the through hole and a shading rubber which is attached to the rubber frame, so that the performance of the auxiliary components placed in the through hole is not influenced; the glue frame is designed to extend along the direction of the top pointing to the bottom of the through hole, the included angle between the first surface and the first side face is an acute angle, the first surface is parallel to the direction of the display panel and is located on one side, away from the display panel, of the glue frame, and the first side face is the side face, extending along the direction of the top pointing to the bottom, of the glue frame and facing the through hole. Because if this contained angle is the right angle or obtuse angle, when the shading sticky tape extends from between backlight unit and the display panel and sticks to gluing the frame, be difficult to stick to on the first side of gluing the frame, and probably because the influence of shading sticky tape thickness or material takes place the warpage, the manufacturability is poor, causes the shading sticky tape and sticks badly the problem. The contained angle of this embodiment first surface and first side is the acute angle, can also make the shading sticky tape along the first side of gluing the frame is attached, covers gluey frame gradually to improve gluey frame light leak.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (12)

1. A display module, comprising: the display panel comprises a backlight module and a display panel which are arranged oppositely, and further comprises a through hole, wherein the through hole at least penetrates through the backlight module;
the backlight module comprises a light source, at least one layer of optical film, at least one rubber frame and at least one shading adhesive tape;
the through hole at least comprises a top part and a bottom part, in the direction perpendicular to the display panel, the top part is the side, close to the display panel, of the through hole, and the bottom part is the side, far away from the display panel, of the through hole;
the glue frame extends along the direction of the bottom pointing to the top, the glue frame at least comprises a first side surface and a first surface, the first surface is parallel to the direction of the display panel and is positioned on one side of the glue frame far away from the display panel, and an included angle between the first surface and the first side surface is an acute angle;
the shading adhesive tape comprises a first shading part and an extended shading part which are integrally formed, the first shading part is attached to one side, close to the display panel, of the adhesive frame, and the extended shading part is attached to the first side face.
2. The display module of claim 1, wherein the first surface is angled with respect to the first side surface in a range of 30 ° to 60 °.
3. The display module of claim 1,
in the direction perpendicular to the display panel, the height of the rubber frame is h, the height of the display panel is h1, the height of the backlight module is h2, and h is not less than h2 and not more than h1+ h 2.
4. The display module according to claim 1, wherein the backlight module comprises a plurality of layers of optical films, the plurality of layers of optical films comprise a reflective sheet, a light guide plate, a diffusion sheet, and a brightness enhancement sheet sequentially stacked along a direction of the backlight module toward the display panel, the plastic frame is located on a side of the reflective sheet close to the display panel, and the first surface of the plastic frame is fixedly connected to the reflective sheet.
5. The display module of claim 1, wherein the first member is disposed within the through hole.
6. The display module according to claim 5, further comprising a cover plate, wherein the cover plate is located on a side of the display panel away from the backlight module.
7. The display module of claim 6, wherein the distance between the first member and the cover plate in the direction perpendicular to the display panel is d2, and 0.2mm ≦ d2 ≦ 0.4 mm.
8. The display module according to claim 1, wherein the display panel comprises a display area and a non-display area, wherein a vertical projection of the through hole to the display panel is located in the non-display area, and the display area is disposed around the non-display area;
and the vertical projection of the shading adhesive tape to the display panel is positioned in the non-display area range.
9. The display module according to claim 1, wherein the backlight module further comprises an iron frame, and the iron frame is located on a side of the optical film away from the display panel; the iron frame is fixedly connected with the first side surface and the first surface of the rubber frame;
the iron frame comprises a first portion, a bending portion and a second portion which are integrally formed, one end of the bending portion is connected with the first portion, the other end of the bending portion is connected with the second portion, the first portion and the extending shading portion are overlapped and attached, and the second portion and the optical diaphragm are arranged in parallel.
10. The display module according to claim 9, wherein the width of the first portion overlapping the extended shading portion is L, and L is greater than or equal to 0.15mm and less than or equal to 0.3 mm.
11. The display module according to claim 9, wherein an end of the first portion away from the bending portion is located at a middle position of the first side surface in a direction perpendicular to the display panel.
12. A display device comprising the display module according to any one of claims 1 to 11.
CN201811150355.3A 2018-09-29 2018-09-29 Display module and display device Active CN109116621B (en)

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