CN108873148A - A kind of backlight module, display module and electronic equipment - Google Patents

A kind of backlight module, display module and electronic equipment Download PDF

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Publication number
CN108873148A
CN108873148A CN201810700602.6A CN201810700602A CN108873148A CN 108873148 A CN108873148 A CN 108873148A CN 201810700602 A CN201810700602 A CN 201810700602A CN 108873148 A CN108873148 A CN 108873148A
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CN
China
Prior art keywords
fixed frame
backlight module
shading piece
light source
fpc
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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
CN201810700602.6A
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Chinese (zh)
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CN108873148B (en
Inventor
温科胜
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.)
Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN201810700602.6A priority Critical patent/CN108873148B/en
Publication of CN108873148A publication Critical patent/CN108873148A/en
Application granted granted Critical
Publication of CN108873148B publication Critical patent/CN108873148B/en
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Classifications

    • 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
    • G02B6/0086Positioning aspects
    • G02B6/0091Positioning aspects of the light source relative to 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
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Abstract

The present invention provides a kind of backlight module, display module and electronic equipment, wherein, backlight module, including light guide plate, light source and fixed frame, the light guide plate is fixedly installed in the fixed frame, the fixed frame includes bottom plate and side frame, and the bottom plate of an end face of the light guide plate, the side frame of the fixed frame and the fixed frame forms an open accommodating cavity;The light source is set in the accommodating cavity, and the light source is set on the bottom plate of the fixed frame;The backlight module further includes shading piece, and the shading piece seals the accommodating cavity.In the present invention, by the way that light source to be set on the bottom plate of fixed frame, in this way, no setting is required is used to support the support member of FPC for backlight module of the invention, so as to reduce support member to the occupancy of display area, and then the effective display area domain of display screen can be made to further increase.

Description

A kind of backlight module, display module and electronic equipment
Technical field
The present invention relates to display screen technology field more particularly to a kind of backlight modules, display screen module and electronic equipment.
Background technique
Currently, the display module of the electronic equipments such as mobile phone, plate is usually that backlight module is arranged below display screen.It is existing Backlight module formed by component assemblings such as light guide plate, light source, fixed frames, due to light source it is generally necessary to pass through FPC (flexible circuit Plate, Flexible Printed Circuit) external circuits plate.In order to facilitate FPC external circuits plate, existing backlight module is usual Using the hanging assembly method of FPC shown in FIG. 1.In assembly method shown in fig. 1, luminescent device 11 is set on FPC12, The both ends of FPC12 are fixed again, wherein support can be fixed by light guide plate 13 in one end of FPC12, and the other end then needs Support is fixed by the support member 15 being set in fixed frame 14.This makes backlight module need to reserve support member 15 setting width, to reduce the effective display area domain of display screen 16.And with the development trend shielded comprehensively, it is based on Fig. 1 The assembly method shown, the effective display area domain of display screen are difficult to increase again.
Summary of the invention
The embodiment of the present invention provides a kind of backlight module, display screen module and electronic equipment, to solve existing backlight module Assembly method existing for the above problem.
In order to solve the above-mentioned technical problem, the invention is realized in this way:
In a first aspect, the embodiment of the invention provides a kind of backlight module, including light guide plate, light source and fixed frame, it is described Light guide plate is fixedly installed in the fixed frame, and the fixed frame includes bottom plate and side frame, an end face of the light guide plate, institute The bottom plate of the side frame and the fixed frame of stating fixed frame forms an open accommodating cavity;
The light source is set in the accommodating cavity, and the light source is set on the bottom plate of the fixed frame;
The backlight module further includes shading piece, and the shading piece seals the accommodating cavity.
Second aspect, it is described the embodiment of the invention provides a kind of display module, including display screen and above-mentioned backlight module Backlight module is set to below the display screen.
The third aspect, the embodiment of the invention provides a kind of electronic equipment, including above-mentioned display module.
In the embodiment of the present invention, by the way that light source to be set on the bottom plate of fixed frame, in this way, the backlight of the embodiment of the present invention No setting is required is used to support the support member of FPC for mould group, so as to reduce support member to the occupancy of display area, Jin Erke So that the effective display area domain of display screen further increases.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing backlight module;
Fig. 2 is one of the structural schematic diagram of backlight module provided in an embodiment of the present invention;
Fig. 3 is the second structural representation of backlight module provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, those of ordinary skill in the art's acquired every other implementation without creative efforts Example, shall fall within the protection scope of the present invention.
As shown in Figure 2 to Figure 3, the embodiment of the present invention provides a kind of backlight module, including light guide plate 21, light source and fixed frame 23, light guide plate 21 is fixedly installed in fixed frame 23, and fixed frame 23 includes bottom plate 231 and side frame 232, one end of light guide plate 21 The bottom plate 231 in face, the side frame 232 of fixed frame 23 and fixed frame 23 forms an open accommodating cavity.Light source is set to accommodating cavity It is interior, and light source is set on the bottom plate 231 of fixed frame 23.Backlight module further includes shading piece 25, and shading piece 25 seals accommodating cavity.
Wherein, it is spacious to form one for the bottom plate 231 of an end face of light guide plate 21, the side frame 232 of fixed frame 23 and fixed frame 23 The accommodating cavity of mouth can be such that light source is easily assembled in accommodating cavity since accommodating cavity opening is arranged.
Wherein, light source is set on the bottom plate 231 of fixed frame 23, since the bottom plate 231 of fixed frame 23 can mention for light source For smooth bearing surface, the stability of light source assembly can be improved.
Wherein, shading piece 25 can be fixedly installed.Here, shading piece 25 is fixedly installed, it can be understood as, shading piece 25 is opposite Be in backlight module it is fixed, shading piece 25 be fixedly installed mode there are many, for example, shading piece 25 is fixedly installed on Determine on frame 23, shading piece 25 is fixedly installed on light guide plate 21, and shading piece 25 is set with fixed frame 23 and the fixation of light guide plate 21 simultaneously Set, etc..
Wherein, shading piece 25 seals accommodating cavity, it can be understood as, shading piece 25 covers in the opening of accommodating cavity, alternatively, hiding Light part 25 is filled in accommodating cavity other spaces in addition to light source takes up space.In this way, the light that light source can be prevented to issue It is diffused into outside backlight module by the opening of accommodating cavity, meanwhile, it can reduce the fiber-loss of light source, enable more light Enough enter in light guide plate 21.
Wherein, light source luminescent needs to consume the energy, such as electric energy, here it is possible to be arranged on the bottom plate 231 of fixed frame 23 The element or route being electrically connected with light source, and light source is electrically connected to a power source by these elements or route, to be mentioned for light source For electric energy.
It can be seen from the above, the backlight module of the embodiment of the present invention, assembly method are, by light source from the side of fixed frame 23 Opening between frame 232 and the end face of light guide plate 21 is put between the side frame 232 of fixed frame 23 and the end face of light guide plate 21 Accommodating cavity, and light source is set on the bottom plate 231 of fixed frame 23.Meanwhile the shading piece of sealing accommodating cavity is set, prevent backlight Mould group light leakage.There are following differences for its assembly method with backlight module shown in fig. 1:In Fig. 1, luminescent device 11 and FPC12 Open-mouth between the side frame of fixed frame 14 and the end face of light guide plate 13 is vacantly set, needs to be arranged support below FPC12 Component 15, this makes backlight module need to reserve the setting width of support member 15, to reduce the effective aobvious of display screen Show region.And in the embodiment of the present invention, since the bottom plate 231 of fixed frame 23 can provide bearing for light source, the present invention is real The backlight module of example is applied, without in addition setting support member, so as to reduce support member to the occupancy of display area, in turn The effective display area domain of display screen 27 can be made to further increase.
Optionally, light source includes FPC24 and the luminescent device 22 that is set on FPC24, and luminescent device 22 and FPC24 is electrically connected It connects, FPC24 is set on the bottom plate 231 of fixed frame 23;The side frame 232 of fixed frame 23 offers the opening stretched out for FPC24.
A kind of specific embodiment of the embodiment as light source, by the way that luminescent device 22 is set on FPC24, and FPC24 is stretched out into 23 external circuits plate of fixed frame, provides the required electric energy that shines for luminescent device 22.Wherein, fixed frame 23 Side frame 232 opens up the opening stretched out for FPC24, and the size of opening preferably just cooperates with the size of FPC24, to avoid sending out as far as possible The light that optical device 22 issues leaks out from the gap between FPC24 and fixed frame 23.Alternatively, it is also contemplated that FPC24 with Shelter is set at the gap between fixed frame 23, to prevent light from leaking out from gap.
Wherein, luminescent device 22 towards light guide plate 21 can be set to light-emitting surface on one side, thereby may be ensured that luminous Most of light that device 22 issues is incident in light guide plate 21.Luminescent device 22 can be LED light.
Optionally, FPC24 can be adhesively fixed by the bottom plate of the first adhesive layer 30 and fixed frame 23.
Optionally, a part of bottom that can extend to light guide plate 21 of FPC24, in this way, the bottom plate 231 of fixed frame 23 exists The relatively other positions in position that FPC24 is arranged can outwardly protrude setting.
Optionally, the position for extending to 21 bottom of light guide plate of FPC24 can pass through the second adhesive layer 31 and light guide plate 21 Bonding.
Optionally, shading piece 25 is provided with extension 251 in the position of opening, extension 251 towards FPC24 extend to FPC24 contact.
The extension 251 that FPC24 is extended to by being arranged in shading piece 25, can effectively block and luminescent device 22 is isolated The light of sending.
Certainly, shading piece 25 can also be also provided at other positions and prolong in addition in the position of opening setting extension 251 Extending portion 251, or extension 251 (forming the shading piece 25 of L-type) is all set in the entire width direction of shading piece 25.Shading The side frame 232 that the extension 251 of part 25 can be affixed on fixed frame 23 is extended to be contacted with FPC24, in this way, the side of fixed frame 23 Frame 232 can provide support for the extension 251 of shading piece 25, also, the extension 251 of shading piece 25 can also be directly right Opening is blocked, and shaded effect is further increased.
Correspondingly, the surface that extension 251 can also be affixed on luminescent device 22 extends to and contacts with FPC24.In this way, extending Portion 251 can coat the surface of luminescent device 22, to further increase shaded effect.
In addition, the extension 251 of shading piece 25 can be to hair in addition to the light-emitting surface towards light guide plate 21 of luminescent device 22 Other any exposed surfaces of optical device 22 are coated, to further increase shaded effect.
Optionally, shading piece 25 is stacked on light source.When light source includes above-mentioned luminescent device 22 and FPC24, shading piece 25 are stacked on luminescent device 22.
In this way, luminescent device 22 can support shading piece 25.To make shading piece 25 more stably be set to back In optical mode group.Certainly, in the lighter in weight of shading piece 25, shading piece 25 can not be stacked on light source, in other words, shading piece It can have spacing between 25 and light source, at this moment, shading piece 25 can rely on its surface and 21 phase knot of fixed frame 23 and light guide plate It closes, to realize the fixed setting of shading piece 25.
Optionally, one end of shading piece 25 and 232 phase of side frame of fixed frame 23 are abutted against, the other end of shading piece 25 with lead Mutually it is abutted against the end face of tabula rasa 21.
On the basis of shading piece 25 is stacked in light source, by the both ends of shading piece 25 side frame with fixed frame 23 respectively 232 are mutually abutted against with the end face of light guide plate 21, and the stability of the fixed setting of shading piece 25 can be further improved.
Optionally, backlight module further includes shading adhesive layer 26, and shading adhesive layer 26 is from the surface of shading piece 25 to fixation The side frame 232 of frame 23 extends, and shading adhesive layer 26 coats the junction of shading piece 25 and fixed frame 23.
In this way, the stability of the fixed setting of shading piece 25 not only can be improved in shading adhesive layer 26, moreover it is possible to further increase Shaded effect.
Optionally, shading piece 25 is made from a material that be thermally conductive.
In view of light source can generate heat during luminous, shading piece 25 can be made from a material that be thermally conductive, in this way, light source The heat generated when work can be conducted through shading piece 25 to the outside of backlight module.It is provided with and prolongs especially for shading piece 25 Jointly for the embodiment of cladding luminescent device 22, shading piece 25 has thermally conductive for extending portion 251, extension 251 and shading piece 25 Property is conducive in time conduct the heat that luminescent device 22 generates.Other than with heating conduction, shading piece 25 is also answered When with preferable shading performance and preferable insulating properties, for example, gypsum, heat-conducting silicone grease, heat conductive silica gel etc..
Since with good thermal conductivity, insulating properties and flexibility, heat conductive silica gel not only contributes to radiate, and flexibility is also It can protect luminescent device 22, luminescent device 22 prevented to be damaged.In addition, tolerance of the flexibility of heat conductive silica gel to build-up tolerance Property it is also stronger, this make the backlight module of the embodiment of the present invention assembly when it is more convenient.Based on this, shading piece 25 can be by leading Hot silica gel is made.
Optionally, fixed frame 23 can be metal frame, be conducive to the heat dissipation of backlight module.
In addition, the backlight module of the embodiment of the present invention can also include other component, for example, being set to light guide plate 21 and consolidating Determine the reflectance coating 35 between the bottom plate 231 of frame 23, is set to the diffusion barrier 33 and brightness enhancement film 34 at 21 top of light guide plate, is set to expansion Dissipate the black adhesive layer 32, etc. between film 33 and shading adhesive layer 26.
The embodiment of the present invention also provides a kind of display module, including any one of display screen 27 and the embodiment of the present invention back Optical mode group, backlight module are set to 27 lower section of display screen.
Display module can also include the touch cover board 28 for being set to 27 top of display screen, and light can be passed through by touching cover board 28 Glue-line 29 is learned to be connected and fixed with display screen 27.
The embodiment of the present invention also provides a kind of electronic equipment, including any display module in the embodiment of the present invention.
In the embodiment of the present invention, above-mentioned electronic equipment can be computer (Computer), mobile phone, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital Assistant, abbreviation PDA), mobile Internet access electronic equipment (Mobile Internet Device, MID), wearable device (Wearable Device), electronic reader, navigator, digital camera etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (11)

1. a kind of backlight module, including light guide plate, light source and fixed frame, the light guide plate are fixedly installed in the fixed frame, It is characterized in that,
The fixed frame includes bottom plate and side frame, an end face of the light guide plate, the side frame of the fixed frame and described solid The bottom plate for determining frame forms an open accommodating cavity;
The light source is set in the accommodating cavity, and the light source is set on the bottom plate of the fixed frame;
The backlight module further includes shading piece, and the shading piece seals the accommodating cavity.
2. backlight module according to claim 1, which is characterized in that the light source includes flexible circuit board FPC and setting Luminescent device on the FPC, the luminescent device are electrically connected with the FPC, and the FPC is set to the bottom of the fixed frame On plate;
The side frame of the fixed frame offers the opening stretched out for the FPC.
3. backlight module according to claim 2, which is characterized in that the shading piece is provided in the position of the opening Extension, the extension are extended to towards the FPC and are contacted with the FPC.
4. backlight module according to claim 3, which is characterized in that the extension is affixed on the surface of the luminescent device It extends to and is contacted with the FPC.
5. backlight module according to claim 1, which is characterized in that the shading piece is stacked on the light source.
6. backlight module according to claim 1, which is characterized in that the side of one end of the shading piece and the fixed frame Frame is mutually abutted against, and the other end of the shading piece and the end face of the light guide plate are mutually abutted against.
7. backlight module according to claim 5, which is characterized in that the backlight module further includes shading adhesive layer, institute It states shading adhesive layer and extends from the surface of the shading piece to the side frame of the fixed frame, described in the shading adhesive layer cladding The junction of shading piece and the fixed frame.
8. backlight module according to claim 1, which is characterized in that the shading piece is made from a material that be thermally conductive.
9. backlight module according to claim 8, which is characterized in that the shading piece is made of heat conductive silica gel.
10. a kind of display module, which is characterized in that including display screen and backlight mould as claimed in any one of claims 1-9 wherein Group, the backlight module are set to below the display screen.
11. a kind of electronic equipment, which is characterized in that including display module as claimed in claim 10.
CN201810700602.6A 2018-06-29 2018-06-29 Backlight module, display module and electronic equipment Active CN108873148B (en)

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Application Number Priority Date Filing Date Title
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CN108873148B CN108873148B (en) 2021-01-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110286515A (en) * 2019-06-30 2019-09-27 Oppo广东移动通信有限公司 A kind of control method of electronic device and electronic device
CN114035371A (en) * 2021-10-12 2022-02-11 深圳市南极光电子科技股份有限公司 Backlight module, preparation process thereof and display device
US11846796B1 (en) 2022-06-22 2023-12-19 Chicony Power Technology Co., Ltd. Backlight module

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CN207249290U (en) * 2017-09-18 2018-04-17 信利半导体有限公司 A kind of backlight module and liquid crystal display die set
CN207334427U (en) * 2017-09-20 2018-05-08 深圳市风谷创新技术有限公司 High brightness touch display screen
CN108037620A (en) * 2018-01-31 2018-05-15 广东欧珀移动通信有限公司 The installation method of backlight module, electronic device and backlight module

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Publication number Priority date Publication date Assignee Title
CN205899204U (en) * 2016-07-25 2017-01-18 信利半导体有限公司 Backlight source
CN106773284A (en) * 2016-11-28 2017-05-31 武汉华星光电技术有限公司 Backlight module and liquid crystal display
CN206725898U (en) * 2017-04-13 2017-12-08 芜湖德仓光电有限公司 A kind of back light module unit structure
CN206684440U (en) * 2017-05-11 2017-11-28 信利半导体有限公司 A kind of backlight and liquid crystal display die set
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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN110286515A (en) * 2019-06-30 2019-09-27 Oppo广东移动通信有限公司 A kind of control method of electronic device and electronic device
CN114035371A (en) * 2021-10-12 2022-02-11 深圳市南极光电子科技股份有限公司 Backlight module, preparation process thereof and display device
US11846796B1 (en) 2022-06-22 2023-12-19 Chicony Power Technology Co., Ltd. Backlight module

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