CN106439607A - Backlight module, display module and mobile terminal - Google Patents
Backlight module, display module and mobile terminal Download PDFInfo
- Publication number
- CN106439607A CN106439607A CN201610829465.7A CN201610829465A CN106439607A CN 106439607 A CN106439607 A CN 106439607A CN 201610829465 A CN201610829465 A CN 201610829465A CN 106439607 A CN106439607 A CN 106439607A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light source
- backlight module
- fin
- 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.)
- Pending
Links
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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
-
- 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
- F21V19/0015—Fastening arrangements intended to retain 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of display technologies and discloses a backlight module, a display module and a mobile terminal. The backlight module comprises a rubber frame, light sources, a light guide plate, a reflection plate and a radiating plate, wherein the light sources, the light guide plate, the reflection plate and the radiating plate are mounted on the rubber frame; the light sources are adjacent to the light guide plate; the light exiting faces of the light sources face the light incidence face of the light guide plate; the reflection plate is mounted on the side, away from the light exiting face of the light guide plate, of the light guide plate; the projection of the reflection plate on the light guide plate covers the light guide plate and at most part of the light sources; the radiating plate is mounted on the side, away from the light guide plate, of the reflection plate; and the projection of the radiating plate on the light sources covers the light sources and at most part of the reflection plate. According to the backlight module, the problem that the lightening effect of the backlight module is dropped due to different thermal expansion coefficients of the radiating plate and the reflection plate can be solved while the radiating performance of the light sources is improved, and the reliability of backlight module products is improved.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of backlight module and display module, mobile terminal.
Background technology
At present, adopt sidelight type backlight module in the display module of the mobile terminals such as mobile phone, its light source is typically adopted more
LED(Light Emitting Diode；Light-Emitting Diode) lamp bar, LED lamp bar is installed on the glue frame of backlight module in use
On, the lower surface of LED lamp bar and two end faces vertical with LED lamp bar bearing of trend are all fitted with glue frame, relative with lower surface
Exiting surface fit with the light guide plate of backlight module, with exiting surface, lower surface and two all vertical front adhesive of end face have soft
Property circuit board, is fitted with the reflector plate of backlight module with the bottom surface of vis-a-vis.Therefore LED lamp bar in use be in by
Glue frame, light guide plate, flexible PCB and reflector plate are in the closing space for being formed, and the heat that LED lamp bar is produced is difficult to shed,
The accumulation of heat can cause LED lamp bar temperature too high, so as to reduce service life and the brightness of light source, and be easily caused mobile phone etc.
The local temperature of terminal unit is too high.
For improving the thermal accumlation problem of LED lamp bar, at present frequently with fin of fitting on reflector plate method by LED
The heat that lamp bar is delivered on reflector plate is dispersed in external environment by fin, and fin typically adopts graphite flake, is guarantor
The heat dispersion of card graphite flake, the area of graphite flake is generally 1/2nd of reflector plate area.High temperature is carried out in backlight module
During the experiment of high humidity reliability, as graphite flake is different from the coefficient of thermal expansion of reflector plate, the two can produce phase in expansion and contraction
To displacement, reflector plate is caused to produce fold, so as to reduce the trust that lights effect, cause backlight module product of backlight module
Property decline.
Content of the invention
The present invention provides a kind of backlight module and display module, mobile terminal, and the backlight module is improving the radiating of light source
While performance, can also improve lighting under effect due to the fin backlight module that cause different from the coefficient of thermal expansion of reflector plate
The problem of drop, improves the reliability of backlight module product.
For achieving the above object, the present invention provides following technical scheme：
A kind of backlight module, including glue frame and the light source, light guide plate, reflector plate and the fin that are installed on the glue frame, its
In：
The light source is provided adjacent to the light guide plate, the incidence surface phase of the exiting surface of the light source and the light guide plate
Right；
The reflector plate is installed on the light guide plate away from the side of its exiting surface, and the reflector plate is on the light guide plate
Projection cover the light guide plate and cover an at most part for the light source；
The fin is installed on the reflector plate away from the side of the light guide plate, and the fin is on the light source
Projection cover the light source and cover an at most part for the reflector plate.
The backlight module that the present invention is provided includes glue frame and is installed on light source, light guide plate, reflector plate and the fin of glue frame,
Wherein, projection of the reflector plate on the light guide plate covers an at most part for light source, then light source is in the side of orienting reflex piece
Do not completely enclosed by reflector plate, and as projection of the fin on light source covers the light source, the heat that light source is produced can be straight
Connect and fin is transferred to, the heat transfer efficiency between light source and fin is improve, and then improves the radiating effect of fin
Rate, simultaneously as fin on the light source projection cover reflector plate at most a part, then reduce fin with anti-
The area of directly contact part between piece is penetrated, can be improved when the hot and humid reliability for carrying out backlight module is tested, due to stone
The reflector plate fold that ink sheet is different from the coefficient of thermal expansion of reflector plate and causes, so as to improve the reliability of backlight module product.
Preferably, the glue frame is conformed with portion away from the side of the light guide plate exiting surface, the reflector plate with described
Jut is connected together.
Further, the jut deviates from institute away from the surface of the exiting surface side of the light guide plate with the reflector plate
State the flush of light guide plate exiting surface side.
Further, projection of the fin on the light guide plate covers the company of the reflector plate and the jut
Connect position.
Preferably, the glue frame is provided with the light source draw-in groove for installing light source, and the light source draw-in groove deviates from the light source
The surface of exiting surface is plane.
Preferably, projection of the fin in the glue frame covers at least a portion of the glue frame, and described scattered
In backing, the reflector plate corresponding position is provided with void region.
Preferably, the fin that the fin is prepared for graphite material.
Present invention also offers a kind of display module, including backlight module as above.
Present invention also offers a kind of mobile terminal, including display module as above.
Preferably, the fin in the backlight module is away from least a portion and the shifting of the side of the reflector plate
The housing laminating of dynamic terminal.
Description of the drawings
Fig. 1 is the decomposition texture schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 2 is the part-structure schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 3 is the part-structure schematic diagram of backlight module provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the backlight module that the present embodiment is provided.
Reference：
10, glue frame；11, jut；12, light source draw-in groove；13, light guide plate draw-in groove；
20, light source；30, light guide plate；40, reflector plate；50, fin.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality obtained under the premise of creative work is not made by those of ordinary skill in the art
Example is applied, belongs to the scope of protection of the invention.
The embodiment of the present invention provide firstly a kind of backlight module, shown in Figure 1, and Fig. 1 is that the embodiment of the present invention is provided
Backlight module decomposition texture schematic diagram, the backlight module includes：Glue frame 10 and the light source 20, light guide plate for being installed on glue frame 10
30th, reflector plate 40 and fin 50, wherein：
Shown in Figure 2, Fig. 2 is the part-structure schematic diagram of backlight module provided in an embodiment of the present invention, light source 20 with
Light guide plate 30 is provided adjacent to, and the exiting surface of light source 20 is relative with the incidence surface of light guide plate 30；Light source 20 in the present embodiment is LED
Light source, in being embodied as, is provided with light source draw-in groove 12 and light guide plate draw-in groove 13 in glue frame 10, light source 20 is connected in light source draw-in groove 12
Interior, light guide plate 30 is connected in light guide plate draw-in groove 13；
Shown in Figure 3, Fig. 3 is the part-structure schematic diagram of backlight module provided in an embodiment of the present invention, reflector plate 40
Light guide plate 30 is installed on away from the side of its exiting surface, projection of the reflector plate 40 on light guide plate 30 covers light guide plate 30 and cover
An at most part for lid light source 20；Projection of the reflector plate 40 on light guide plate 30 covers light guide plate 30, can make by away from light guide plate
The light that 30 exiting surface side sends is launched piece and launches to the exiting surface side of light guide plate 30, meanwhile, reflector plate 40 is being led
Projection on tabula rasa 30 covers an at most part for light source 20, can make light source 20 in the side of orienting reflex piece 40 not by reflector plate
40 completely enclose and form gap；In being embodied as, can be by the size of adjustment reflector plate 40 so as to the throwing on light guide plate 30
Shadow does not cover light source 20；
Shown in Figure 4, Fig. 4 is the part-structure schematic diagram of backlight module provided in an embodiment of the present invention, fin 50
Reflector plate 40 is installed on away from the side of light guide plate 30, projection of the fin 50 on light source 20 covers light source 20 and cover anti-
Penetrate an at most part for piece 40；Preferably, the fin 50 that fin 50 is prepared for graphite material；Fin 50 is on light source 20
Projection cover light source 20, and as light source 20 is not between the side of orienting reflex piece 40 is completely enclosed and formed by reflector plate 40
Gap, the heat that produce can light source 20 is directly delivered to fin 50, simultaneously as projection of the fin 50 on light source 20 is covered
An at most part for lid reflector plate 40, reduces the contact area of fin 50 and reflector plate 40.
The backlight module that the present invention is provided includes glue frame 10 and is installed on light source 20, the light guide plate 30, reflector plate of glue frame 10
40 and fin 50, wherein, projection of the reflector plate 40 on light guide plate 30 covers an at most part for light source 20, then light source 20 exists
The side of orienting reflex piece 40 is not completely enclosed by reflector plate 40, and as projection of the fin 50 on light source 20 covers light source
20, the heat that light source 20 is produced can be transferred directly to fin 50, improve the heat transfer between light source 20 and fin 50
Efficiency, and then the radiating efficiency of fin 50 is improve, simultaneously as projection of the fin 50 on light source 20 covers reflector plate
A 40 at most part, then reduce the area of directly contact part between fin 50 and reflector plate 40, and can improve is being carried out
During the hot and humid reliability experiment of backlight module, the reflection for causing as graphite flake is different from the coefficient of thermal expansion of reflector plate 40
40 fold of piece, so as to improve the reliability of backlight module product.
In a kind of optimal way, for making reflector plate 40 be installed in glue frame 10, glue frame 10 is away from 30 exiting surface of light guide plate
Side is conformed with portion 11, and reflector plate 40 is connected together with jut 11, the concrete knot of the jut 11 for providing in the present embodiment
Structure is referring to shown in Fig. 2 and Fig. 3, and jut 11 is two and is arranged at two lateral location of glue frame 10, and with reflector plate 40
Two sides are connected together；In being embodied as, the structure of jut 11 is not limited to structure shown in Fig. 2 and Fig. 3, as long as can instead
Penetrate piece 40 and glue frame 10 is snapped into, the frame shape that for example can be also set to be closed jut 11 with four checkposts of reflector plate 40 is tied
Structure.
For ease of installing fin 50 in reflector plate 40 away from the side of light guide plate 30, in being embodied as, referring to Fig. 3 institute
Show, jut 11 deviates from the table that the surface of the exiting surface side of light guide plate 30 and reflector plate 40 deviate from 30 exiting surface side of light guide plate
Face is concordant, a part for fin 50 can be made to be mounted directly on reflector plate 40, reduce the gap between fin 50 and glue frame 10,
And reduce backlight module the probability of light leakage phenomena is caused due to the gap between fin 50 and glue frame 10.
For further reducing the probability that backlight module produces light leakage phenomena, projection of the fin 50 on light guide plate 30 is covered
Lid reflector plate 40 and the link position of jut 11, fin 50 can be blocked at the link position of reflector plate 40 and jut 11
The light that gap appears, reduces the probability that backlight module produces light leakage phenomena.In this example, fin 50 is graphite material system
Standby fin, graphite heat radiation fin while the heat dispersion of light source 20 is improved, as which has the performance for being difficult printing opacity, can
Play a part of to block the light that the gap between reflector plate 40 and glue frame 10 appears.
In prior art, it is the installation strength for improving LED light source, for installing the light source draw-in groove 12 of light source 20 in glue frame 10
Multiple raised structures are provided with the surface of the side of the exiting surface away from light source 20, when light source 20 is installed on light source draw-in groove 12, per
Individual raised structures are sticked in LED light source between two adjacent LED chip, can improve the installation strength of light source 20, but prominent
The heat-dissipating space that structure reduces light source 20 is played, is unfavorable for the radiating of light source 20；For increasing the heat-dissipating space of light source 20 further,
Shown in Figure 1, glue frame 10 is provided with the light source draw-in groove 12 for installing light source 20, and light source draw-in groove 12 deviates from 20 exiting surface of light source
Surface be plane, the light source draw-in groove 12 for providing in the present embodiment increases the heat-dissipating space of light source 20, can further improve light
The heat dispersion in source 20.
In a kind of optimal way, it is the area of dissipation for improving fin 50 further, referring to shown in Fig. 1 and Fig. 4, Fig. 4 is
The structural representation of the backlight module that the present embodiment is provided, projection of the fin 50 in glue frame 10 covers at least the one of glue frame 10
In part, and fin 50,40 corresponding position of reflector plate is provided with void region.Fin 50 covers glue frame 10 at least
A part increased the area of fin 50, be conducive to improving position corresponding with reflector plate 40 in its heat dispersion, and fin 50
The place of putting is provided with void region, reduces the contact area between fin 50 and reflector plate 40, improves backlight module product
Reliability.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display module, including above-mentioned backlight module.
The display module equally can while the heat dispersion of its light source 20 is improved, can also improve due to fin 50 with
The problem for lighting effect decline of the backlight module that the coefficient of thermal expansion difference of reflector plate 40 causes.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of mobile terminal, including above-mentioned display module.Should
The mobile terminal concretely mobile terminal such as mobile phone, panel computer, notebook computer.The mobile terminal equally can improve its light
While the heat dispersion in source 20, can also improve the backlight mould for causing as fin 50 is different from the coefficient of thermal expansion of reflector plate 40
The problem for lighting effect decline of group.
Shell due to some mobile terminal products current is metal material, is to improve the backlight in mobile terminal further
The heat dispersion of light source 20 in module, in a kind of optimal way, the fin 50 in backlight module is away from the side of reflector plate 40
At least a portion fit with the housing of mobile terminal, then light source 20 produce heat can be conducted to mobile terminal by fin 50
Housing, and in conducting to external environment, further increase the heat dispersion of light source 20 by housing.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the embodiment of the present invention
Bright spirit and scope.So, if these modifications of the present invention and modification belong to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of backlight module, it is characterised in that including glue frame and be installed on the light source of the glue frame, light guide plate, reflector plate and
Fin, wherein：
The light source is provided adjacent to the light guide plate, and the exiting surface of the light source is relative with the incidence surface of the light guide plate；
The reflector plate is installed on the light guide plate away from the side of its exiting surface, throwing of the reflector plate on the light guide plate
Shadow covers the light guide plate and covers an at most part for the light source；
The fin is installed on the reflector plate away from the side of the light guide plate, throwing of the fin on the light source
Shadow covers the light source and covers an at most part for the reflector plate.
2. backlight module according to claim 1, it is characterised in that the glue frame is away from the one of the light guide plate exiting surface
Side is conformed with portion, and the reflector plate is connected together with the jut.
3. backlight module according to claim 2, it is characterised in that the jut is away from the exiting surface of the light guide plate
The surface of side deviates from the flush of the light guide plate exiting surface side with the reflector plate.
4. backlight module according to claim 3, it is characterised in that projection of the fin on the light guide plate is covered
Cover the link position of the reflector plate and the jut.
5. backlight module according to claim 1, it is characterised in that the glue frame is provided with the light source for installing light source
Draw-in groove, the light source draw-in groove is plane away from the surface of the light source exiting surface.
6. the backlight module according to any one of claim 1-5, it is characterised in that the fin is in the glue frame
Projection covers at least a portion of the glue frame, and in the fin, the reflector plate corresponding position is provided with vacancy section
Domain.
7. backlight module according to claim 1, it is characterised in that the radiating that the fin is prepared for graphite material
Piece.
8. a kind of display module, it is characterised in that include the backlight module as described in any one of claim 1-7.
9. a kind of mobile terminal, it is characterised in that including display module as claimed in claim 8.
10. mobile terminal according to claim 9, it is characterised in that the fin in the backlight module is away from described
At least a portion of the side of reflector plate is fitted with the housing of the mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610829465.7A CN106439607A (en) | 2016-09-18 | 2016-09-18 | Backlight module, display module and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610829465.7A CN106439607A (en) | 2016-09-18 | 2016-09-18 | Backlight module, display module and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106439607A true CN106439607A (en) | 2017-02-22 |
Family
ID=58168399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610829465.7A Pending CN106439607A (en) | 2016-09-18 | 2016-09-18 | Backlight module, display module and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106439607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11294229B2 (en) | 2017-09-20 | 2022-04-05 | Beijing BOE Optoelectronics Technologyy Co., Ltd. | Backlight module and display device |
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| CN104534359A (en) * | 2014-12-25 | 2015-04-22 | 武汉天马微电子有限公司 | Backlight device |
| CN204962478U (en) * | 2015-09-08 | 2016-01-13 | 昆山龙腾光电有限公司 | Backlight unit and have its liquid crystal disply device |
| CN105372865A (en) * | 2015-11-17 | 2016-03-02 | 武汉华星光电技术有限公司 | Reflection sheet, backlight module set applying same and display screen |
| CN205579339U (en) * | 2016-04-28 | 2016-09-14 | 上海天马微电子有限公司 | Backlight module and display |
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2016
- 2016-09-18 CN CN201610829465.7A patent/CN106439607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889564A (en) * | 2012-10-09 | 2013-01-23 | 深圳市华星光电技术有限公司 | Backboard and backlight module and liquid crystal display device using backboard |
| CN104534359A (en) * | 2014-12-25 | 2015-04-22 | 武汉天马微电子有限公司 | Backlight device |
| CN204962478U (en) * | 2015-09-08 | 2016-01-13 | 昆山龙腾光电有限公司 | Backlight unit and have its liquid crystal disply device |
| CN105372865A (en) * | 2015-11-17 | 2016-03-02 | 武汉华星光电技术有限公司 | Reflection sheet, backlight module set applying same and display screen |
| CN205579339U (en) * | 2016-04-28 | 2016-09-14 | 上海天马微电子有限公司 | Backlight module and display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11294229B2 (en) | 2017-09-20 | 2022-04-05 | Beijing BOE Optoelectronics Technologyy Co., Ltd. | Backlight module and display device |
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Application publication date: 20170222 |
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