CN106016067B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN106016067B CN106016067B CN201610523659.4A CN201610523659A CN106016067B CN 106016067 B CN106016067 B CN 106016067B CN 201610523659 A CN201610523659 A CN 201610523659A CN 106016067 B CN106016067 B CN 106016067B
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- led
- fpc
- backlight module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2054—Light-reflecting surface, e.g. conductors, substrates, coatings, dielectrics
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of backlight module and display devices.The glue frame that backlight module includes LED light group, is connect with LED light group, and it is successively set on side and the light guide plate and optical diaphragm being located on the inside of glue frame that LED light group is connect with glue frame, wherein: LED light group includes FPC and at least LED that is set on FPC, the side opposite with light-emitting surface of light guide plate is arranged in FPC, and FPC and light guide plate have the overlapping region not less than light guide plate, and the surface towards light guide plate side of FPC at least has reflecting layer, the side that an at least LED is distributed in light guide plate in the region opposite with light guide plate.The program compared with prior art, enormously simplifies the structure of backlight module, to reduce the thickness of backlight module, improves packaging efficiency, and reduce production cost.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of backlight module and display device.
Background technique
With the development of science and technology, more and more intelligence wearing products enter in people's lives, small and exquisite, lightening intelligence
Product can be dressed and be particularly subject to consumers.
As described in Fig. 1 a and Fig. 1 b, the backlight module of existing intelligent wearable device generally comprises metal backing 013, glue frame
02, reflector plate 012, LED (light emitting diode, light emitting diode) lamp group 01, light guide plate 03 and optical diaphragm 04
Equal components, wherein LED light group 01 includes FPC (Flexible Printed Circuit board, flexible printed circuit board)
The 010 and LED 011 that is arranged on FPC 010.Present inventor sends out in the development process for being engaged in intelligent wearable device
Existing, usually there is following technical problem in existing intelligent wearable device:
Backlight module components inside existing intelligent wearable device are more, and when assembling is complicated for operation, and efficiency is lower;Backlight
The reflector plate 012 of mould group needs to be assembled between light guide plate 03 and metal backing 013, due to thinner thickness, easily because operating not
When and injured is scrapped;The production cost that aforementioned technical problem also also results in intelligent wearable device is higher, and also limits intelligence
The lightening development of energy wearable device;In addition, as illustrated in figure 1 c, the picture of prior art backlight module holds between two LED
Easily there is speck 014, causes optical quality poor.
Summary of the invention
The embodiment of the present invention provides a kind of backlight module and display device, to simplify the structure of backlight module, to reduce
The thickness of backlight module improves its packaging efficiency, reduces its production cost.
The embodiment of the invention provides a kind of backlight module, including LED light group, the glue frame being connect with the LED light group, with
And it is successively set on side and the light guide plate and optical film being located on the inside of the glue frame that the LED light group is connect with the glue frame
Piece, in which:
The LED light group includes FPC and at least LED that is set on the FPC, and the FPC setting is led described
The side opposite with light-emitting surface of tabula rasa, and the FPC and the light guide plate have the overlapping region not less than the light guide plate,
And the surface of the FPC towards the light guide plate side at least has reflecting layer in the region opposite with the light guide plate, it is described
The side that an at least LED is distributed in the light guide plate.
In technical solution of the embodiment of the present invention, the FPC of LED light group plays a supporting role to internal part, so as to
Cancel metal backing in the prior art, the surface of FPC towards light guide plate side at least has in the region opposite with light guide plate
Reflecting layer, reflecting layer can substitute traditional reflector plate, and compared with prior art, the program enormously simplifies the knot of backlight module
Structure improves packaging efficiency, and reduce production cost to reduce the thickness of backlight module.
Preferably, the LED is two, and the direction of main light emission of two LED is parallel and contrary.It is set using this
Meter, the direction of main light emission of two LED are staggered, and are convenient for optical design, and are conducive to improve optical homogeneity property, promote display
The display quality of part.
Preferably, the light guide plate is the light guide plate of center symmetric shape.It can be applied to using the backlight module of the program
In the products such as smartwatch or Intelligent bracelet with display screen.
Optionally, the light guide plate includes that circular light guide plate, oval light guide plate, rectangular light guide plate or hexagon are guide-lighting
Plate.
Preferably, two LED are centrosymmetric setting.Using the design, the light that two LED issue is respectively in a pair
The two sides dispersive propagation for claiming axis (axis of symmetry passes through the center of light guide plate and is parallel to the direction of main light emission of LED), from
And optical design is easily facilitated, be conducive to further increase optical homogeneity property, promote the display quality of display device.
Preferably, the FPC includes golden finger, and part of the FPC in addition to golden finger has centrosymmetric structure.This
Sample, LED light group tool is there are two placement location is assembled, the two assembling placement locations differ 180 °, in any assembling placement location
It can be assembled with glue frame, without distinguishing the stretching direction of golden finger, therefore, which can be further simplified assembling work
Skill improves packaging efficiency.
Optionally, the reflecting layer is white reflecting layer or argentum reflecting layer.
Preferably, the glue frame is adhesively fixed with the FPC.Using the design, glue frame and FPC assembly are easy, disassembly side
Just.
Preferably, backlight module further include: be attached at the shading glue of the neighboring area of the glue frame and the optical diaphragm
Band.Shading rubber belt can block stray light, edge light leakage be reduced, to further improve the optical quality of display device.
The embodiment of the present invention also provides a kind of display device, including backlight module described in aforementioned any technical solution.It should
The thickness of the backlight module of display device is smaller, and packaging efficiency is higher, and production cost is relatively low.
Optionally, the display device includes smartwatch or the Intelligent bracelet with display screen.
Detailed description of the invention
Fig. 1 a is the cross section structure schematic diagram of prior art backlight module;
Fig. 1 b is the LED distribution schematic diagram of prior art LED lamp group;
Fig. 1 c is the picture stimulated effect picture of prior art backlight module;
Fig. 2 is the cross section structure schematic diagram of one embodiment of the invention backlight module;
Fig. 3 is the main view of one embodiment of the invention LED light group.
Appended drawing reference:
Prior art part:
01-LED lamp group;02- glue frame;03- light guide plate;04- optical diaphragm;010-FPC;011-LED;012- reflector plate;
013- metal backing;014- speck.
Part of the embodiment of the present invention:
1-LED lamp group;2- glue frame;3- light guide plate;4- optical diaphragm;10-FPC;11-LED;
The reflecting layer 12-;13- golden finger;5- gum;6- shading rubber belt.
Specific embodiment
For the thickness for reducing backlight module, its packaging efficiency is improved, its production cost is reduced, the embodiment of the present invention mentions
A kind of backlight module and display device are supplied.To make the object, technical solutions and advantages of the present invention clearer, it lifts and implements below
Invention is further described in detail for example.
As shown in Figures 2 and 3, the backlight module that one embodiment of the invention provides, including LED light group 1 and LED light group 1 connect
The glue frame 2 connect, and it is successively set on side and the light guide plate 3 and light for being located at 2 inside of glue frame that LED light group 1 is connect with glue frame 2
Learn diaphragm 4, in which:
LED light group 1 includes FPC 10 and at least LED 11 being set on FPC 10, and FPC 10 is arranged in light guide plate
3 side opposite with light-emitting surface, and FPC 10 and light guide plate 3 have the overlapping region not less than light guide plate 3, and 10 court of FPC
At least there is reflecting layer 12 in the region opposite with light guide plate 3 to the surface of 3 side of light guide plate, an at least LED 11 is distributed in
The side of light guide plate 3.
The concrete application product type of above-described embodiment backlight module is unlimited, such as can apply in smartwatch or tool
Have in the display devices such as the Intelligent bracelet of display screen.The global shape of backlight module substantially can be rounded, rectangular or just polygon
Shape etc..
As shown in Figure 1a, in the prior art, the reflector plate 012 of backlight module needs to be assembled in light guide plate 03 and metal back
Between plate 013, due to thinner thickness, easily injured is scrapped due to misoperation, not only higher cost, and leads to backlight module
Thickness it is larger.
In technical solution of the embodiment of the present invention, metal backing in the prior art is eliminated, by the FPC of LED light group 1
10 pairs of internal parts are played a supporting role, FPC 10 towards 3 side of light guide plate surface at least in the region opposite with light guide plate 3
With reflecting layer 12, reflecting layer 12 can substitute traditional reflector plate, and compared with prior art, the program enormously simplifies backlight mould
The structure of group improves packaging efficiency, and reduce production cost to reduce the thickness of backlight module.
The specific material type in reflecting layer 12 is unlimited, can be white reflecting layer or argentum reflecting layer, high reflection can be used
Ink prints to be formed.Can reflection only be arranged in the region opposite with light guide plate 3 in the surface of FPC 10 towards 3 side of light guide plate
Reflecting layer can also be arranged in whole region in layer, it is preferred to use latter scheme, in this way, being convenient for the processing and fabricating of FPC 10.
As shown in figure 3, in a preferred embodiment of the invention, LED 11 is two, the direction of main light emission of two LED 11 is flat
It is capable and contrary.The light emitting angle of LED is generally 100 °~140 °, usually defines the luminous bisector of angle direction conduct of LED
Direction of main light emission.Using the design, the direction of main light emission of two LED 11 is staggered, and is convenient for optical design, and be conducive to mention
High optical homogeneity property promotes the display quality of display device.
The concrete shape of light guide plate 3 is unlimited, preferably the light guide plate of centrically symmetric shape.For example, circular light guide plate is (as schemed
Shown in 3), oval light guide plate, rectangular light guide plate or hexagon light guide plate, etc..It can be applied using the backlight module of the program
In the products such as smartwatch or Intelligent bracelet with display screen.
In backlight module of the embodiment of the present invention, the light that LED 11 is issued enters leaded light by all side end faces of light guide plate 3
In plate 3, side surface design of the light guide plate 3 close to reflecting layer 12 has optics site (not shown), and optics site can incite somebody to action
The light of injection is broken up, and projects after being allowed to homogenization from light guide plate 3 far from a side surface in reflecting layer 12.12 pairs of reflecting layer light
Reflex can make more light enter light guide plate 3, to improve light utilization efficiency.And optical diaphragm 4 can play increasing to light
Effect that is bright and further homogenizing, so that backlight module be allow to provide optical quality preferable face light.
As shown in fig. 1b and fig. lc, in the prior art, the LED 011 of backlight module is two, is commonly designed a certain
The same side of the axis of symmetry is easy to appear speck 014 between two LED 011, causes optical quality poor.And in the present invention one
In the technical solution of embodiment, referring to figure 3. shown in, LED 11 is two, this two LED 11 is centrosymmetric setting.Using
The design, in an axis of symmetry, (axis of symmetry is by the center of light guide plate 3 and parallel respectively for the light that two LED 11 issue
In the direction of main light emission of LED 11) two sides dispersive propagation be conducive to further increase optics to easily facilitate optical design
Homogeneity promotes the display quality of display device.
As shown in figure 3, FPC 10 generally includes the golden finger 13 for accessing signal, in the preferred embodiment of the present invention
In scheme, part of the FPC 10 in addition to golden finger 13 has centrosymmetric structure.In this way, the tool of LED light group 1 is put there are two group
Seated position, the two assembling placement locations just differ 180 °, can assemble with glue frame in any assembling placement location, and nothing
The stretching direction of golden finger 13 need to be distinguished, therefore, which can be further simplified packaging technology, improve packaging efficiency.
In previous embodiment, the specific type of attachment of glue frame 2 and FPC 10 is unlimited, for example, can be connected by fastener.
In a preferred embodiment of the invention, glue frame 2 and FPC 10 is adhesively fixed, such as the gum 5 by being arranged on FPC 10 is viscous
Connect fixation.Using the design, glue frame 2 and FPC 10 assemble simplicity, convenient disassembly, and FPC 10 itself has flexibility, can subtract
Few deformation or damage of pullling to glue frame 2, and be also convenient for carrying out subsequent assembling procedure.
As shown in Fig. 2, preferably, backlight module further include: be attached at the screening of the neighboring area of glue frame 2 and optical diaphragm 4
Optical cement band 6.Shading rubber belt 6 can block stray light, edge light leakage be reduced, to further improve the optics product of display device
Matter.
Refering to what is shown in Fig. 2, the assembling process of the provided backlight module of the embodiment of the present invention is as follows:
The FPC 10 of LED light group 1 is adhesively fixed with glue frame 2;
Light guide plate 3 is fixed in the inside of glue frame 2;
Each optical diaphragm 4, such as diffusion sheet, the first prismatic lens, the second prismatic lens etc. are successively assembled in going out for light guide plate 3
Smooth surface side;
Shading rubber belt 6 is attached to the neighboring area of glue frame 2 and optical diaphragm 4, completes the assembling of backlight module.
As it can be seen that compared with prior art, which is not necessarily to carry out the assembling of metal backing and reflector plate, enormously simplify
The structure of backlight module improves packaging efficiency, and reduce production cost to reduce the thickness of backlight module.
The embodiment of the present invention also provides a kind of display device, the backlight module including aforementioned any technical solution.The display
The thickness of the backlight module of device is smaller, and packaging efficiency is higher, and production cost is relatively low.The concrete type of display device is not
Limit, for example, can be smartwatch, or the Intelligent bracelet with display screen, etc..
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of backlight module, which is characterized in that including LED light group, the glue frame being connect with the LED light group, and successively set
It sets in the side that the LED light group is connect with the glue frame and light guide plate and optical diaphragm on the inside of the glue frame, in which:
The LED light group includes FPC and at least LED that is set on the FPC, and the FPC is arranged in the light guide plate
The side opposite with light-emitting surface, and the FPC and the light guide plate have the overlapping region not less than the light guide plate, and institute
State FPC towards the light guide plate side surface at least the region opposite with the light guide plate have reflecting layer, it is described at least
One LED is distributed in the side of the light guide plate;
The LED is two, and the direction of main light emission of two LED is parallel and contrary;
Two LED are centrosymmetric setting.
2. backlight module as described in claim 1, which is characterized in that the light guide plate is the light guide plate of center symmetric shape;
The light guide plate includes circular light guide plate, oval light guide plate, rectangular light guide plate or hexagon light guide plate.
3. backlight module as described in claim 1, which is characterized in that the light guide plate is the light guide plate of center symmetric shape;
The FPC includes golden finger, and part of the FPC in addition to the golden finger has centrosymmetric structure.
4. backlight module as described in claim 1, which is characterized in that the reflecting layer is white reflecting layer or argentum reflecting layer.
5. backlight module as described in claim 1, which is characterized in that the glue frame is adhesively fixed with the FPC.
6. backlight module as claimed in any one of claims 1 to 5, which is characterized in that further include: it is attached at the glue frame and institute
State the shading rubber belt of the neighboring area of optical diaphragm.
7. a kind of display device, which is characterized in that including backlight module as described in any one of claims 1 to 6.
8. display device as claimed in claim 7, which is characterized in that the display device include smartwatch or have display
The Intelligent bracelet of screen.
Priority Applications (1)
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CN201610523659.4A CN106016067B (en) | 2016-07-05 | 2016-07-05 | Backlight module and display device |
Applications Claiming Priority (1)
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CN201610523659.4A CN106016067B (en) | 2016-07-05 | 2016-07-05 | Backlight module and display device |
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CN106016067A CN106016067A (en) | 2016-10-12 |
CN106016067B true CN106016067B (en) | 2019-03-26 |
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Families Citing this family (1)
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CN107247404B (en) * | 2017-06-02 | 2019-09-10 | 捷开通讯(深圳)有限公司 | Wearable device |
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CN204328709U (en) * | 2015-01-07 | 2015-05-13 | 新科实业有限公司 | A kind of backlight module |
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US7418726B2 (en) * | 2003-01-02 | 2008-08-26 | Intellectual Property & Ideas, Llc | Illuminated devices using UV-LED's |
CN105629549A (en) * | 2016-01-26 | 2016-06-01 | 武汉华星光电技术有限公司 | Rubber frame, backlight module and display device |
CN105511163A (en) * | 2016-01-28 | 2016-04-20 | 武汉华星光电技术有限公司 | Backlight module and display screen |
CN105700239A (en) * | 2016-04-22 | 2016-06-22 | 深圳市华星光电技术有限公司 | Backlight module and display device |
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CN102193245A (en) * | 2010-03-19 | 2011-09-21 | 日立民用电子株式会社 | Liquid crystal display device |
CN103150027A (en) * | 2013-02-05 | 2013-06-12 | 苏州达方电子有限公司 | Backlight structure and luminous keyboard |
CN104423655A (en) * | 2013-08-20 | 2015-03-18 | 鸿富锦精密工业(深圳)有限公司 | Flexible touch structure as well as watch and jewelry comprising the same |
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Effective date of registration: 20180412 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Applicant after: BOE Technology Group Co., Ltd. Address before: 361101 Fujian, Xiamen torch hi tech Zone (Xiangan) Industrial Zone Xiang Hong Road, No. 1, 1-2 layer Applicant before: Xiamen BOE Co., Ltd. Applicant before: BOE Technology Group Co., Ltd. |
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