CN108169843B - Electronic device, display assembly and backlight module thereof - Google Patents

Electronic device, display assembly and backlight module thereof Download PDF

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Publication number
CN108169843B
CN108169843B CN201810105971.0A CN201810105971A CN108169843B CN 108169843 B CN108169843 B CN 108169843B CN 201810105971 A CN201810105971 A CN 201810105971A CN 108169843 B CN108169843 B CN 108169843B
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CN
China
Prior art keywords
light
guide plate
light guide
backlight module
refraction layer
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Active
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CN201810105971.0A
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Chinese (zh)
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CN108169843A (en
Inventor
陆忠恒
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN201810105971.0A priority Critical patent/CN108169843B/en
Publication of CN108169843A publication Critical patent/CN108169843A/en
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Publication of CN108169843B publication Critical patent/CN108169843B/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133612Electrical details

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The application discloses backlight unit, this backlight unit includes: the light guide plate comprises a light inlet end part and a light guide plate main body part; the light source is arranged on one side of the light inlet end part, which is deviated from the main body part of the light guide plate; a light uniformizing element disposed on the light guide plate main body; the flexible circuit board is partially arranged on the area of the light guide plate which is not covered by the dodging element, and a reserved gap is reserved between the end parts of the flexible circuit board and the dodging element, which are close to each other; the shading adhesive tape covers the flexible circuit board and covers a partial area of the light homogenizing element; and the refraction layer is arranged in the non-display area of the backlight module and is used for deflecting the light rays which are directly emitted to the refraction layer from the light source towards the shading adhesive tape and shielding the light rays by the shading adhesive tape. The application also discloses an electronic device and a display component. The backlight module can avoid the problem of light leakage of the backlight module under the condition of reducing the width occupied by the non-display area of the backlight module.

Description

Electronic device, display assembly and backlight module thereof
Technical Field
The present invention relates to the field of backlight technology of electronic devices, and more particularly, to an electronic device, a display module thereof, and a backlight module.
Background
At present, with the development of science and technology, electronic devices such as smart phones and the like are gradually becoming necessities of life of people.
Backlight unit is electron device's important part, portable electron device's such as smart mobile phone backlight unit of side income formula is adopted usually at present, the light that the light source sent penetrates into the light guide plate from the light guide plate side, thereby provide backlight for electron device's display panel through the light guide plate, however because this kind of side income formula backlight unit's light source and some relevant structures need set up the side at the light guide plate, consequently, occupy great non-display area, be unfavorable for the realization of narrow frame and comprehensive screen, how to shorten backlight unit in the width of non-display area and not influence backlight unit and display panel's normal demonstration, become the focus problem that people paid attention to.
Disclosure of Invention
The embodiment of the application adopts a technical scheme that: a backlight module is provided, which includes: the light guide plate comprises a light inlet end part and a light guide plate main body part; the light source is arranged on one side of the light inlet end part, which is deviated from the main body part of the light guide plate; a light uniformizing element disposed on the light guide plate main body; the flexible circuit board is partially arranged on the area of the light guide plate which is not covered by the dodging element, and a reserved gap is reserved between the end parts of the flexible circuit board and the dodging element, which are close to each other; the shading adhesive tape covers the flexible circuit board and covers a partial area of the light homogenizing element; and the refraction layer is arranged in the non-display area of the backlight module and is used for deflecting the light rays which are directly emitted to the refraction layer from the light source towards the shading adhesive tape and shielding the light rays by the shading adhesive tape.
Another technical scheme adopted by the embodiment of the application is as follows: a display assembly is provided, which comprises a display panel and a backlight module used for providing backlight for the display panel, wherein the backlight module is provided.
The embodiment of the application adopts another technical scheme that: an electronic device is provided, which comprises the display assembly.
The beneficial effects of the embodiment of the application are that: this application embodiment includes through setting up this backlight unit: the light guide plate comprises a light inlet end part and a light guide plate main body part; the light source is arranged on one side of the light inlet end part, which is deviated from the main body part of the light guide plate; a light uniformizing element disposed on the light guide plate main body; the flexible circuit board is partially arranged on the area of the light guide plate which is not covered by the dodging element, and a reserved gap is reserved between the end parts of the flexible circuit board and the dodging element, which are close to each other; the shading adhesive tape covers the flexible circuit board and covers a partial area of the light homogenizing element; the refraction layer is arranged in the non-display area of the backlight module and is used for deflecting the light which is directly emitted to the refraction layer from the light source towards the shading adhesive tape and shielding the light by the shading adhesive tape.
Drawings
FIG. 1 is a schematic structural diagram of a backlight module according to a first embodiment of the present application;
FIG. 1a is a schematic view illustrating a light shielding principle of a backlight module according to a first embodiment of the present application;
FIG. 2 is a schematic structural diagram of a backlight module according to a second embodiment of the present application;
FIG. 3 is a schematic structural diagram of a backlight module according to a third embodiment of the present application;
FIG. 4 is a schematic structural diagram of a backlight module according to a fourth embodiment of the present application;
fig. 5 is an exploded schematic view of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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 application.
The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and fig. 1a, fig. 1 is a schematic structural diagram of a backlight module according to a first embodiment of the present application, and fig. 1a is a schematic light shielding principle diagram of the backlight module according to the first embodiment of the present application. In the present embodiment, the backlight module includes a back frame 11, a reflective sheet 12, a light guide plate 13, a light uniformizing element 14, a refractive layer 15, a flexible circuit board 16, a connection tape 17, a light shielding tape 18, a first plastic frame 19, a second plastic frame 20, and a light source 21.
The back frame 11 is a box-shaped structure with an opening on one side, the back frame 11 includes a bottom wall 111 and a side wall 112, the bottom wall 111 is connected with the side wall 112 in a bending manner, and the bottom wall 111 and the side wall 112 enclose an accommodating cavity. The material of the back frame 11 may be metal, such as iron, aluminum, etc.
The reflective sheet 12 is disposed on the bottom wall 111 of the back frame 11 and located inside the accommodating cavity.
The light guide plate 13 is disposed on the reflective sheet 12 and located inside the accommodating cavity.
The light guide plate 13 includes a light incident end portion 131 and a light guide plate main body portion 132, and the light incident end portion 131 of the light guide plate 13 near the light incident side thereof is thicker than the light guide plate main body portion 132.
Alternatively, the thickness of the light entrance end portion 131 gradually decreases from the light entrance side to a direction away from the light entrance side, and the thickness of the light guide plate main body portion 132 is uniform, i.e., equal everywhere.
The light sources 21 are disposed on the area of the reflective sheet 12 not covered by the light guide plate 13, and the light sources 21 are all located at the side of the light guide plate 13. The light source 21 is located on the light incident side of the light guide plate 13. The light source 21 may be an LED lamp. The light source 21 is disposed on a side of the light incident end portion 131 facing away from the light guide plate main body portion 132, for example, the light source 21 is located on a left side of the light guide plate 13.
The light uniformizing element 14 is disposed on the light guide plate main body portion 132, and the light uniformizing element 14 may include a diffusion film 141, a first brightness enhancement film 142, and a second brightness enhancement film 143 disposed in this order away from the light guide plate. Alternatively, the diffusion film 141, the first brightness enhancement film 142, and the second brightness enhancement film 143 are independent film layers, or at least two of the diffusion film 141, the first brightness enhancement film 142, and the second brightness enhancement film 143 are integrally provided.
The first adhesive frame 19 is disposed on the bottom wall 111 of the back frame 11 and is abutted against the side wall 112 of the back frame 11. The first plastic frame 19 is disposed on a side of the light source 21 away from the light guide plate 13, for example, the first plastic frame 19 is disposed on a left side of the light source 21, and a light mixing and heat dissipating space is left between the first plastic frame 19 and the light source 21.
The flexible circuit board 16 is partially disposed on the area of the light guide plate 13 not covered by the light unifying element 14, and the portion of the flexible circuit board 16 not disposed on the light guide plate 13 is disposed above the first glue frame 19 and the light source 21.
The light source 21 is fixed to the lower surface of the portion of the flexible circuit board 16 not disposed on the light guide plate 13, and the light source 21 is electrically connected to the flexible circuit board 16. The wiring on the flexible circuit board 16 connects the light source 21 and the external power pins to enable the external power pins to power the light source 21.
The flexible circuit board 16 is bonded to the area of the light guide plate 13 not covered with the light uniforming member 14 by the connection tape 17. The connecting tape 17 may be a double-sided tape. One surface of the double-sided tape is attached to the lower surface of the flexible circuit board 17 at a position corresponding thereto, and the other surface is attached to the upper surface of the light guide plate 13 at a position corresponding thereto.
The thickness of the refractive layer 15 is smaller than that of the connection tape 17.
The flexible circuit board 16 and the end of the dodging element 14 close to each other have a predetermined gap a therebetween. Specifically, a reserved gap a is provided between the end of the flexible circuit board 16 and the connection tape 17 near the light unifying element 14 and the end of the light unifying element 14 near the flexible circuit board 16. The reserved gap a is used for matching assembly errors on one hand, and on the other hand, the backlight module can still be normally used under the condition of certain cold and hot deformation.
The light shielding tape 18 covers the flexible circuit board 16 and covers a partial area of the light uniformizing element 14. Specifically, the light shielding tape 18 is disposed on a surface of the flexible circuit board 16 remote from the light source 21, and is disposed on a partial area of the light unifying element 14. The masking tape 18 may be adhered to the upper surface of the light unifying element 14 to secure the light unifying element 14.
Alternatively, the light shielding tape 18 may include a first sub light shielding tape portion 181 and a second sub light shielding tape portion 182, the first sub light shielding tape portion 181 covers the flexible circuit board 16, and the second sub light shielding tape portion 182 covers a partial region of the light uniformizing element 14. The thickness of the first sub light shielding tape part 181 may be greater than that of the second sub light shielding tape part 182.
The second adhesive frame 20 fixes the light shielding tape 18 and the flexible circuit board 16 on the side of the light shielding tape 18 and the flexible circuit board 16 away from the light unifying element 14.
The first rubber frame 19 is located in the containing cavity of the back frame 11, and the second rubber frame 20 is located outside the containing cavity of the back frame 11.
The refraction layer 15 is disposed in a non-display area of the backlight module, the non-display area is an area covered by the light shielding tape 18, in other words, a projection of the refraction layer 15 on a plane where the light shielding tape 18 is located is completely covered by the light shielding tape 18. The refraction layer 15 is used for deflecting the light ray S1 directly emitted from the light source 21 to the refraction layer 15 toward the light-shielding tape 18 and being shielded by the light-shielding tape 18. That is, the refraction layer 15 is used to deflect the light ray S1 emitted from the light source 21 and originally leaked from the right side of the light-shielding tape 18 upward so as to be shielded by the light-shielding tape 18, thereby reducing the width required for the light-shielding tape 18, reducing the width of the non-display area, and preventing light leakage.
Alternatively, in the present embodiment, the refraction layer 15 is disposed between the light uniformizing element 14 and the light guide plate 13, and the coverage area of the refraction layer 15 corresponds to the end area of one end of the light uniformizing element 14 or the light guide plate 13 close to the light source 21.
Optionally, the refractive layer 15 includes a first sub-layer 151 relatively close to the light guide plate 13 and a second sub-layer 152 relatively far from the light guide plate 13, and the refractive index of the first sub-layer 151 is smaller than that of the second sub-layer 152. Since the light ray S1 emitted from the light source 21 to the refractive layer 15 is emitted from the optically thinner medium (the first sub-layer 151) to the optically denser medium (the second sub-layer 152), the incident angle is larger than the refraction angle, and the light ray S1 is deflected upward, so that the light ray S1 that would otherwise leak is deflected upward by the refractive layer 15 and blocked by the light blocking tape 18.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a backlight module according to a second embodiment of the present application.
In the present embodiment, the refraction layer 25 has a single-layer structure, and the refraction layer 25 has a refractive index greater than that of the light guide plate 13.
Since the refraction layer 25 is disposed between the light guide plate 13 and the light uniformizing element 14, the light S1 emitted from the light source 21 to the refraction layer 25 will necessarily pass through the light guide plate 13 first, the refractive index of the refraction layer 23 is set to be greater than that of the light guide plate 13, the light S1 is emitted from the optically thinner medium to the optically denser medium, and the light S1 emitted from the light source 21 to the refraction layer 25 can be deflected toward the light shielding tape 18.
On this basis, further, the refractive index of the light unifying element 14 may be set larger than the refractive index of the refractive layer 25, and the refractive index of the light unifying element 14 gradually increases in a direction away from the light guide plate 13. For example, the refractive index of the diffusion film 141 is smaller than the refractive index of the first brightness enhancement film 142, and the refractive index of the first brightness enhancement film 142 is smaller than the refractive index of the second brightness enhancement film 143, so that the degree of upward deflection can be increased, and the width required for the light shielding tape 18 can be further reduced.
It should be understood that the position where the refractive layer is disposed is not limited to the position described in the above embodiment, and any position on the optical path of the light leakage in the non-display region is within the scope of the present application. See the description below for details.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a backlight module according to a third embodiment of the present application. In the present embodiment, the refractive layer 35 is provided between the diffusion film 141 and the first brightness enhancement film 142. The area covered by the refractive layer 35 corresponds to the end area of the diffusion film 141 or the first brightness enhancement film 142.
Similarly, in the present embodiment, the refractive layer may be a structure including two sublayers or a single layer. See the description above for details.
In other embodiments, a refractive layer can be disposed between the first and second brightness enhancement films 142, 143.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a backlight module according to a fourth embodiment of the present application. In the present embodiment, the refraction layer 45 is disposed in the reserved gap a and on the light guide plate 13. The leaked light directly emitted from the light source 21 through the reserved gap a can be deflected toward the light shielding tape 18 so as to be shielded by the light shielding tape 18.
Referring to fig. 5, fig. 5 is an exploded schematic view of an electronic device according to an embodiment of the disclosure. In this embodiment, the electronic device 50 may be a smart phone, and in other embodiments, the electronic device may also be a tablet computer, a palm computer, a smart watch, and the like.
In the present embodiment, the electronic device 20 may include a rear case 51, a middle frame 52, a display assembly 53, and a cover plate 54.
The middle frame 52 is fixedly connected with the rear case 51.
The display unit 53 is fixed to the middle frame 52.
The display assembly 53 includes a backlight module 531 and a display panel 532, and the backlight module 53 is used for providing backlight for the display panel 532.
The display panel 532 may be a liquid crystal display panel or other display panel.
The cover plate 54 is provided over the display unit 53. The cover 54 may be a transparent glass cover and in the non-display area, the cover 54 may be opaque. For example, the cover plate 54 is coated with a light-shielding ink in the non-display area.
It is to be understood that other structures of the electronic device 50, such as a circuit board, etc., may be disposed between the rear case 51 and the middle frame 52, and will not be specifically described herein since the present application is not directed to improvements of these components.
In other embodiments, the electronic device 50 may have other structures, and the description of the structure of the electronic device 50 is not intended to limit the scope of the present application.
This application embodiment includes through setting up this backlight unit: the light guide plate comprises a light inlet end part and a light guide plate main body part; the light source is arranged on one side of the light inlet end part, which is deviated from the main body part of the light guide plate; a light uniformizing element disposed on the light guide plate main body; the flexible circuit board is partially arranged on the area of the light guide plate which is not covered by the dodging element, and a reserved gap is reserved between the end parts of the flexible circuit board and the dodging element, which are close to each other; the shading adhesive tape covers the flexible circuit board and covers a partial area of the light homogenizing element; the refraction layer is arranged in the non-display area of the backlight module and is used for deflecting the light which is directly emitted to the refraction layer from the light source towards the shading adhesive tape and shielding the light by the shading adhesive tape.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (7)

1. A backlight module is characterized in that the backlight module comprises:
the light guide plate comprises a light inlet end part and a light guide plate main body part, wherein the thickness of the light inlet end part is gradually reduced from the light inlet side to the direction far away from the light inlet side, and the thickness of the light guide plate main body part is uniform;
the light source is arranged on one side, away from the light guide plate main body part, of the light inlet end part;
a light uniformizing element disposed on the light guide plate main body;
a flexible circuit board partially disposed on a region of the light guide plate not covered by the light unifying element, with a reserved gap between ends of the flexible circuit board and the light unifying element that are close to each other;
the shading adhesive tape is arranged on one surface, far away from the light source, of the flexible circuit board and is connected with the light uniformizing element, and the area covered by the shading adhesive tape is a non-display area of the backlight module;
the refraction layer is arranged between the light homogenizing element and the main body part of the light guide plate, the projection of the refraction layer on the plane where the shading adhesive tape is located is completely covered by the shading adhesive tape, and the refraction layer is used for deflecting light rays which are directly emitted to the refraction layer by the light source towards the shading adhesive tape and is shielded by the shading adhesive tape;
the refraction layer comprises a first sublayer and a second sublayer, wherein the first sublayer is close to the light guide plate, the second sublayer is far away from the light guide plate, and the refractive index of the first sublayer is smaller than that of the second sublayer; alternatively, the first and second electrodes may be,
the refraction layer is of a single-layer structure, and the refractive index of the refraction layer is greater than that of the light guide plate; in the alternative to this, either,
the refraction layer is single-layer structure, the refracting index of even light component is greater than the refracting index on refraction layer, the refracting index of even light component is along keeping away from the direction of light guide plate increases gradually.
2. A backlight module according to claim 1, wherein the refraction layer is disposed between the light uniformizing element and the light guide plate, and a covering area of the refraction layer corresponds to an end area of one end of the light uniformizing element or the light guide plate close to the light source.
3. The backlight module as claimed in claim 1, wherein the light uniformizing element comprises a diffusion film, a first brightness enhancement film and a second brightness enhancement film sequentially arranged along a direction away from the light guide plate, and the refraction layer is disposed between the diffusion film and the first brightness enhancement film or between the first brightness enhancement film and the second brightness enhancement film.
4. The backlight module as claimed in claim 1, wherein the refraction layer is disposed in the predetermined gap and on the light guide plate.
5. The backlight module according to claim 1, further comprising a connection tape, wherein the flexible circuit board portion is adhered to a region of the light guide plate not covered by the light uniformizing element by the connection tape, and the thickness of the refraction layer is smaller than that of the connection tape;
the reserved gap is reserved between the end parts, close to the dodging element, of the flexible circuit board and the connecting adhesive tape and the end parts, close to the flexible circuit board, of the dodging element.
6. A display module, characterized in that the display module comprises a display panel and a backlight module for providing backlight for the display panel, wherein the backlight module is the backlight module according to any one of claims 1 to 5.
7. An electronic device, characterized in that the electronic device comprises the display assembly of claim 6.
CN201810105971.0A 2018-01-31 2018-01-31 Electronic device, display assembly and backlight module thereof Active CN108169843B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN108169843B true CN108169843B (en) 2021-03-19

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CN110297358B (en) * 2019-06-28 2022-08-19 厦门天马微电子有限公司 Backlight module and curved surface display panel

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JP2012014909A (en) * 2010-06-30 2012-01-19 Omron Corp Plane light source device
TWI547740B (en) * 2012-11-08 2016-09-01 友達光電股份有限公司 Backlight module having a light shielding module and display device using the same
CN105807492A (en) * 2016-05-24 2016-07-27 京东方科技集团股份有限公司 Backlight module and display device
CN106842713B (en) * 2017-04-12 2024-04-16 Oppo广东移动通信有限公司 Backlight module and electronic device

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