CN110161753A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN110161753A CN110161753A CN201910472002.3A CN201910472002A CN110161753A CN 110161753 A CN110161753 A CN 110161753A CN 201910472002 A CN201910472002 A CN 201910472002A CN 110161753 A CN110161753 A CN 110161753A
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- CN
- China
- Prior art keywords
- light guide
- guide plate
- backlight module
- lamp bar
- buffer structure
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light 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
- G02B6/0066—Light 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 characterised by the light source being coupled to the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL 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
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The invention discloses a kind of backlight module and display devices, the backlight module backlight module includes bottom plate, side frame and light guide plate, wherein: bottom plate and side frame form an accommodating space, light guide plate is set in accommodating space, light guide plate includes the corner part of the corner region positioned at light guide plate, at least one buffer structure is arranged between corner part and side frame.The buffer structure can reduce light guide plate when being impacted, reduce the relative displacement occurred between light guide plate and metal frame, so as to reduce light guide plate to the impact force of lamp bar, and the power that light guide plate drives the lamp bar circuit board being adhered on light guide plate mobile, to reduce the shearing force that lamp bar circuit board is subject to, reduces lamp bar and tear risk.Therefore, the reliability of backlight module can be improved in the program, improves the display effect of display device.
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
Liquid crystal display device is a kind of flat-panel display device, its working principle is that right under electric field action using liquid crystal material
The modulating action of light generates a variety of different light and shade variations to form image.Since liquid crystal material itself does not shine,
Liquid crystal display device requires special backlight module.
Backlight module is one of key part and component of liquid crystal display device, and the major function of backlight module is for liquid crystal
Display panel provides uniform, high brightness backlight.The basic principle of backlight module is to lead to common point-type or Linear luminous body
It crosses effective ray machine structure and is converted to the planar luminous body of high brightness and uniform gray scale, so that liquid crystal display panel be enable normally to show shadow
Picture.
According to the distributing position of light source, backlight module can be divided into down straight aphototropism mode set and two kinds of side entrance back module.
Since side entrance back module meets the slim requirement of current display device, and highlighted, uniform planar light source can be provided, because
This, most liquid crystal display devices are all made of side entrance back module.
In the prior art, in order to install the various components of backlight module, the frame that backlight module needs to have certain, and it is complete
The trend of face has become the main trend of display device development, and the frame of display device is also more and more narrow, aobvious in order to realize
The narrow frame of showing device, the prior art install lamp bar by the way of reverse group, to preferably realize narrow frame.And the side of reverse group
Formula installation lamp bar also brings along certain defect.
Specifically, the side of the lamp bar circuit board of lamp bar is bonded and fixed to metal frame, the other side in reverse group formula backlight module
It is bonded and fixed to light guide plate, so as to so that bond area when lamp bar is installed is larger.In the prior art, when display device carries out
When drop test, or fall in use, is easy to cause the light guide plate to shake in light guide plate accommodating space, works as light guide plate
Along when shaking, relative displacement can occur with metal frame causes light source to damage, backlight module so as to tear lamp bar circuit board
Reliability it is poor.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of backlight module and display device, there is light source to reduce backlight module
The probability for damaging defect, improves the reliability of backlight module, improves the display effect of display device.
Backlight module provided by the embodiment of the present invention includes bottom plate, side frame and light guide plate, in which:
The bottom plate and the side frame form an accommodating space, and the light guide plate setting is in the accommodating space, described
Light guide plate includes the corner part of the corner region positioned at the light guide plate, and at least one is arranged between the corner part and the side frame
A buffer structure.
There is at least one buffering knot in optional technical solution, between the corner region of the light guide plate and the bottom plate
Structure.
In optional technical solution, the light guide plate further includes body regions, the plane where perpendicular to the light guide plate
Direction on, the thickness of the corner region is less than or equal to the thickness of the body regions.
In optional technical solution, the buffer structure be set to the light guide plate towards the side of the side frame and/or:
The buffer structure is set to the side frame towards the side of the light guide plate.
In specific technical solution, the buffer structure has reflecting layer towards the surface of the light guide plate.
In optional technical solution, the reflecting layer includes white ink layer or aluminium ink layer.
In optional technical solution, backlight module further includes lamp bar, and the lamp bar is set to the incident side of the light guide plate,
The incident side of the light guide plate intersects with the light emission side of the light guide plate, reflectivity of the reflecting layer close to the lamp bar side
Reflectivity less than the reflecting layer far from the lamp bar side.
In optional technical solution, backlight module further includes multiple light sources, and the light-emitting surface of the multiple light source is led with described
The light-emitting surface of tabula rasa is parallel.
In optional technical solution, the corner part of the light guide plate includes right angle corner portion, rounded corners portion, straight line chamfering
Corner part or ladder corner part.
In optional technical solution, the buffer structure include elastic foam, poly terephthalic acid class plastics, rubber or
Silica gel.
In optional technical solution, the buffer structure includes serrate projections structure, triangular hill structure, hemispherical convex
Play structure, strip projected parts structure or foaming structure.
In the embodiment, it is provided with buffer structure between the corner part and side frame of light guide plate, which has elasticity,
It is specifically as follows flexible structure, can is flexible pad more specifically.When light guide plate expanded by heating, buffer structure can be squeezed,
To have certain expansion space, light guide plate can be made not deform because being squeezed.When backlight module is by impact force,
Buffer structure can be allow to play the role of buffering to light guide plate, so that light guide plate will not occur more significantly to be displaced.It is special
It is other, for light guide plate towards lamp bar direction, biggish displacement will not occur, therefore, light guide plate drive lamp bar it is mobile away from
It is smaller from also, the mobile tearing effects generated to lamp bar of light guide plate can be alleviated and mentioned so as to improve the service life of lamp bar
The reliability of high backlight module improves the yield of display device.
A kind of display device is additionally provided in another technical solution of the application, which includes above-mentioned backlight module.
Backlight module in the display device includes buffer structure, and light guide plate can be made close to the corner part of the side of lamp bar
There is buffer structure between side frame, which can reduce light guide plate when being impacted, and occur between metal frame
Relative displacement drives the lamp bar being adhered on light guide plate so as to reduce light guide plate to the impact force and light guide plate of lamp bar
The mobile power of circuit board reduces lamp bar and tears risk to reduce the shearing force that lamp bar circuit board is subject to.The knot of the display device
Structure reliability is higher, and can have preferable display effect and higher service life.
Detailed description of the invention
Fig. 1 is the backlight module partial cross section structural schematic diagram of an embodiment of the prior art；
Fig. 2 is the backlight module partial cross section structural schematic diagram of another embodiment of the prior art；
Fig. 3 is the backlight module top view of one embodiment of the application；
Fig. 4 is structural schematic diagram at M in Fig. 3；
Fig. 5 is backlight module partial cross section structural schematic diagram in embodiment a kind of at N-N in Fig. 3；
Fig. 6 is backlight module partial cross section structural schematic diagram in embodiment another at N-N in Fig. 3；
Fig. 7 is the partial enlarged view of the backlight module top view of another embodiment of the application；
Fig. 8 is the backlight module top view of another embodiment of the application；
Fig. 9 is backlight module partial cross section structural schematic diagram in embodiment a kind of at Q-Q in Fig. 8；
Figure 10 is the backlight module top view of another embodiment of the application；
Figure 11 is the partial enlarged view of the backlight module top view of another embodiment of the application；
Figure 12 is the partial enlarged view of the backlight module top view of another embodiment of the application；
Figure 13 is the display device structure schematic diagram of one embodiment of the invention.
Appended drawing reference:
1- metal frame；
2- glue frame；
21- side frame；
22- bottom plate；
3- light guide plate；
31- corner part；
4- lamp bar；
41- lamp bar circuit board；
42- light emitting diode；
5- shading rubber belt；
6- buffer structure；
The reflecting layer 61-；
7- light source.
Specific embodiment
For the probability for reducing the tearing of backlight module lamp bar, the reliability of backlight module is improved, the display of display device is improved
Effect, the embodiment of the invention provides a kind of backlight module and display devices.To make the object, technical solutions and advantages of the present invention
Clearer, invention is further described in detail by the following examples.
As shown in Figure 1 to Figure 2, wherein Fig. 1 is the backlight module partial cross section structural representation of an embodiment of the prior art
Figure；Fig. 2 is the backlight module partial cross section structural schematic diagram of another embodiment of the prior art.Backlight module is according to its lamp bar 4
Mounting structure is different, can be divided into positive group of formula and reverse group formula.Backlight module may include metal frame 1, glue frame 2, light guide plate 3, lamp
Item 4 and shading rubber belt 5 etc., lamp bar 4 include lamp bar circuit board 41 and the light emitting diode 42 for being fixed on lamp bar circuit board 41
(Light Emitting Diode, abbreviation LED), for the backlight module of side entering type, the light-emitting surface of light emitting diode 42 with lead
The light-emitting surface of tabula rasa 3 intersects.
Be positive a group formula backlight module as shown in Figure 1, specifically, light emitting diode 42 utilizes table just in group formula backlight module
Face mounting technology (Surface Mount Technology, abbreviation SMT) is fitted on lamp bar circuit board 41, then by lamp bar circuit
Plate 41 fits in glue frame 2 and light guide plate 3, then is pasted by shading rubber belt 5, i.e., lamp bar circuit board 41 is leaned on positioned at backlight module
The side of 3 light-emitting surface of nearly light guide plate.And as the frame of display module becomes narrow gradually, the bond area of glue frame 2 is smaller and smaller, leads
Structural reliability is caused to reduce.
It is illustrated in figure 2 reverse group formula backlight module, specifically, in reverse group formula backlight module, the lamp bar circuit board 41 of lamp bar 4
Side be bonded and fixed to metal frame 1, the other side is bonded and fixed to light guide plate 3, so as to so that lamp bar 4 install when bonding plane
Product is larger.In the prior art, glue frame 2 has 3 accommodating space of light guide plate, the side frame 21 of the light guide plate 3 and light guide plate accommodating space
Between have certain interval, to adapt to the change in size of the generation of expanding with heat and contract with cold of light guide plate 3.When display device carries out drop test
When, or fall in use, it is easy to cause the light guide plate 3 to shake in light guide plate accommodating space, specifically, working as light guide plate
3 along the direction A shake when, can with metal frame occur relative displacement, so as to tear lamp bar circuit board 41, cause lamp bar 4 damage,
The reliability of backlight module is poor.
As shown in Figures 3 to 5, wherein Fig. 3 is the backlight module top view of one embodiment of the application；Fig. 4 is in Fig. 3 at M
Structural schematic diagram；Fig. 5 is the backlight module partial cross section structural schematic diagram of one embodiment of the application, in specially Fig. 3 at N-N
A kind of partial cross section structural schematic diagram；The embodiment of the present application provides a kind of backlight module, which includes bottom plate 22, side
Frame 21 and light guide plate 3, in which: bottom plate 22 and side frame 21 form an accommodating space, and light guide plate 3 is set in accommodating space, guide-lighting
Plate 3 includes the corner part 31 of the corner region positioned at light guide plate 3, at least one buffering knot is arranged between corner part 31 and side frame 21
Structure 6.
In the embodiment, it is provided with buffer structure 6 between the corner part 31 and side frame 21 of light guide plate 3, the buffer structure 6 tool
It is flexible, it is specifically as follows flexible structure, more specifically, which can be flexible pad.When 3 expanded by heating of light guide plate
When, buffer structure 6 can be squeezed, to have certain expansion space, light guide plate 3 can be made not deform because being squeezed.
When backlight module is by impact force, buffer structure 6 can be allow to play the role of buffering to light guide plate 3, thus light guide plate 3
It will not occur more significantly to be displaced.Particularly, light guide plate 3 will not be occurred larger towards 4 direction of lamp bar, the i.e. direction A
Displacement, therefore, the distance that light guide plate 3 drives lamp bar 4 mobile is also smaller, can alleviate that light guide plate 3 is mobile to generate lamp bar 4
Tearing effects improve the reliability of backlight module so as to improve the service life of lamp bar 4, improve the yield of display device.
Backlight module further includes lamp bar 4, and lamp bar 4 is set to the incident side of light guide plate 3, the incident side and leaded light of light guide plate 3
The light emission side of plate 3 intersects, i.e., the backlight module is side entrance back module.In the embodiment, light guide plate 3 can be made close to lamp bar
There is buffer structure 6, which can reduce light guide plate 3 and be impacted between the corner part 31 and side frame 21 of 4 side
When and light guide plate 3 and metal frame between the relative displacement that occurs, so as to reduce light guide plate 3 to the impact force of lamp bar 4,
And the power that light guide plate 3 drives the lamp bar circuit board 41 that is adhered on light guide plate 3 mobile, thus reduce lamp bar circuit board 41 by
Shearing force, reduce lamp bar 4 tear risk.
It is worth noting that light guide plate is plate structure, corner region refers to the edge line bending region of light guide plate.Example
Such as, light guide plate is rectangular light guide plate, and corner region refers to be four rectangular areas of rectangular light guide plate, of course, it is possible to light guide plate
Corner region carry out the techniques such as chamfered, therefore corner region is not limited to rectangular area.
Fig. 5 and Fig. 6 are please referred to, Fig. 6 is the backlight module partial cross section structural schematic diagram of another embodiment of the application, specifically
For another partial cross section structural schematic diagram at N-N in Fig. 3.In optional technical solution, the corner region of light guide plate 3 and bottom
There is at least one buffer structure 6 between plate 22.
In the embodiment, also there is buffer structure 6 between light guide plate 3 and bottom plate 22, specifically, referring to perpendicular to leading
The direction of 3 light-emitting surface of tabula rasa, the position between light guide plate 3 and bottom plate 22, so as to alleviate between light guide plate 3 and bottom plate 22
Buffering effect improves the reliability that light guide plate 3 is installed.
It is worth noting that the quantity of the buffer structure in the application between light guide plate corner part and side frame does not do specific limit
System, buffer structure can be an overall structure, also may include multiple buffer structures, user can design according to self-demand
The specific structure and quantity of buffer structure.In addition, the quantity of the buffer structure between light guide plate corner part and bottom plate is not also done and is had
Body limitation, equally, buffer structure can be an overall structure, also may include multiple buffer structures, and user can be according to certainly
The specific structure and quantity of body Demand Design buffer structure.
Please continue to refer to Fig. 5 and Fig. 6, in the application optional embodiment, light guide plate 3 further includes body regions, vertical
In on the direction of 3 place plane of light guide plate, the thickness of corner region is less than or equal to the thickness of body regions.
As shown in fig. 6, in a specific embodiment, the thickness of corner region and the consistency of thickness of body regions, thus
3 light guide effect of light guide plate is more uniform, and the structure of light guide plate 3 is relatively simple, convenient for production and installation.
As shown in figure 5, the thickness of corner region is less than the thickness of body regions, the reality in another specific embodiment
It applies in example, can make backlight module includes 3 mounting groove of light guide plate, and corner region is overlapped in 3 mounting groove of light guide plate, can turn
Buffer structure 6 is arranged between 3 mounting groove of angular zone and light guide plate further can make the thickness compensation turning of buffer structure 6
The thickness difference in region and body regions, consequently facilitating installation buffer structure 6.In the interface, the thickness of corner region and body regions
Degree segment difference can form position limiting structure, form limit fit structure with the glue frame of installation light guide plate, to improve light guide plate installation
Reliability.
In the application optional embodiment, the specific set-up mode of buffer structure is unlimited, for example, being set to guide-lighting and side frame
Between buffer structure, can be set in the surface of light guide plate, also can be set in the surface of side frame, or in light guide plate surface
Buffer structure is provided with side frame surface.Certainly, the buffer structure for setting and between light guide plate and bottom plate is same, can
It to be set to the surface of light guide plate, also can be set in the surface of bottom plate, or be respectively provided in light guide plate surface and backplate surface
There is buffer structure.
In one specific embodiment, buffer structure is set to side of the light guide plate towards side frame, specifically, the buffering knot
Structure can be bonded and fixed to light guide plate.It, can be first by the corner part outer surface of light guide plate when assembling backlight module in the embodiment
Buffer structure is attached, then light guide plate and lamp bar are pressed, is assembled into semi-finished product, then above-mentioned semi-finished product are assembled to glue iron one
Installing frame in, then other membrane materials are assembled, to form backlight module.
In another specific embodiment, the side in side frame towards light guide plate is can be set in buffer structure.The embodiment
In, buffer structure can be bonded and fixed to side frame, alternatively, buffer structure can be connected in side frame, specifically, buffering can be made to tie
Structure has clamp, and side frame has card slot, which is adapted to clamping with card slot.
Certainly, in a specific embodiment, buffer structure can be fixedly connected with light guide plate and side frame respectively with both ends,
For example, two sides respectively with light guide plate and side frame, alternatively, light guide plate and side frame are clamped, and Nian Jie with light guide plate, to improve buffering
The fixed effect of structure.
Referring to FIG. 7, Fig. 7 shows the partial enlarged view of the backlight module top view of another embodiment of the application.This Shen
Please be in a specific embodiment, buffer structure 6 has reflecting layer 61 towards the surface of light guide plate 3.The reflecting layer 61 can incite somebody to action
The light of directive corner region is reflected back in light guide plate 3, to improve the light utilizing status of backlight module, improves backlight module
Using effect.
Specifically, the specific structure in the reflecting layer 61 is unlimited, such as reflecting layer 61 can be white ink layer, or
Aluminium ink layer.White ink layer and the reflecting effect of aluminium ink layer are preferable, certainly, in other embodiments, or
The ink layer of other colors.
In specific embodiment, the color in reflecting layer 61 can be uniform, or variation.One specific real
It applies in example, referring to FIG. 7, backlight module further includes lamp bar 4, lamp bar 4 is set to the incident side of light guide plate 3, and light guide plate 3 enters light
Side is intersected with the light emission side of light guide plate 3, and reflectivity of the reflecting layer 61 close to 4 side of lamp bar is less than reflecting layer far from one 4 side of lamp bar
Reflectivity.
In the embodiment, backlight module is side entrance back module, and lamp bar 4 is set to the side of light guide plate 3, light guide plate 3
Towards one end of lamp bar 4, the reflecting layer 61 on 6 surface of buffer structure of corner part 31 is variation, specifically, reflecting layer 61 is close
The reflectivity of 4 side of lamp bar is less than reflectivity of the reflecting layer far from 4 side of lamp bar, since the light close to 4 side of lamp bar is stronger,
Therefore, there is the problem of shadow defect in the corner part 31 which can reduce light guide plate 3, improves light uniformity.Specifically
When implementation, reflecting layer 61 may include multiple portions, and the color of various pieces is different, so that reflectivity is different；Alternatively, reflecting layer
Surface can be gradient color, close to 4 side of lamp bar reflecting layer 61 be gray reflective layer, far from 4 side of lamp bar reflecting layer
61 be white reflecting layer or silvery reflective layer, and the reflecting layer 61, specific root can be specifically made by the way of gradual change silk-screen
According to Demand Design.
Please refer to Fig. 8 and Fig. 9, wherein Fig. 8 shows the backlight module top view of another embodiment of the application；Fig. 9 is shown
Backlight module partial cross section structural schematic diagram in a kind of embodiment at Q-Q in Fig. 8, specifically, Fig. 8 and Fig. 9 show the application
The structural schematic diagram of down straight aphototropism mode set in embodiment.In the embodiment, backlight module further includes multiple light sources 7, Duo Geguang
The light-emitting surface in source 7 is parallel with the light-emitting surface of light guide plate 3.
In the embodiment, backlight module is down straight aphototropism mode set, for down straight aphototropism mode set, can also apply this Shen
Technical solution please, to improve the stability and reliability of light guide plate installation.
Please refer to Fig. 8 and Figure 10, in optional embodiment, the shape of the corner part 31 of light guide plate 3 is not particularly limited, and is led
The corner part 31 of tabula rasa 3 includes right angle corner portion, rounded corners portion, straight line chamfering corner part or ladder corner part.In leaded light
Light guide plate 3 is observed in plate top view direction, i.e., the light guide plate 3 from the direction of 3 light-emitting surface of light guide plate, the edge of light guide plate 3 has
Square edge, rounded edges, right angle Chamfer Edge or step edges.
In the embodiment, being designed according to the structure of backlight module, light guide plate 3 can have different edge shapes, thus
Different 31 shapes of corner part is formed, according to the shape of actual product Demand Design corner part 31, the application can be used
In buffer structure 6, the buffer structure 6 adapt to cooperation corner part 31 shape.Specifically, as shown in figure 8, light guide plate 3
Corner part 31 be right angle corner portion, as shown in Figure 10, the corner part 31 of light guide plate 3 is ladder corner part, herein without one
One enumerates.Since light guide plate 3 is provided with corner part, being provided with buffer structure 6 in corner can be effective in this way when falling
Ground buffers the impact force of light guide plate, avoids light guide plate from directly hitting lamp bar 4, causes to show bad.
For the material of buffer structure, the application is also not particularly limited, for example, buffer structure can for elastic foam,
Poly terephthalic acid class plastics, rubber perhaps any one in silica gel or at least two mixing.For the material of buffer structure
Matter needs to have elasticity flexibility in other words, can shrink with the extruding of light guide plate, restores with loosening for light guide plate
It is formed, to have buffering effect.Above-mentioned several materials are several optional materials, naturally it is also possible to other materials be selected to make
Buffer structure for buffer structure, above-mentioned several materials is relatively conventional and easy to process, and cost is relatively low, therefore is relatively good
Selection.
In optional embodiment, the shape of buffer structure is also not particularly limited, which can be the slow of sheet
Structure is rushed, buffer structure also may include serrate projections structure, triangular hill structure, hemispherical protuberances structure, strip projected parts
Structure or foaming structure.Specifically, as shown in figure 4, buffer structure is sheet buffer structure, sheet buffering in the embodiment
The manufacture craft of structure is relatively simple, and is easily installed, and installation reliability is also higher, also has the advantages that cost is relatively low.
As shown in figure 11, Figure 11 shows the partial enlarged view of the backlight module top view of another embodiment of the application, should
In embodiment, buffer structure is triangular hill structure, herein, it is understood that is had between corner part and side frame multiple slow
Structure is rushed, each buffer structure is triangular hill structure.In specific embodiment, a table of triangular hill can be made
Face is adhered to light guide plate, i.e., multiple triangular hills is bonded in 31 outer surface of the corner part of light guide plate, specifically, above-mentioned multiple three
Angular protrusion can be disposed proximate to, to improve the buffering effect reliability of buffer structure.Above-mentioned multiple triangular hills, can also be with
It is spaced set distance, to reduce cost.
Specifically, above-mentioned serrate projections structure, triangular hill structure, hemispherical protuberances structure, strip projected parts structure or
Person's foaming structure can cooperate with sheet buffer structure, for example, above structure is made on the surface of sheet buffer structure, due to band
There is the buffer structure of bulge-structure or foaming structure, compared with fine and close sheet buffer structure, structure is more loose, so as to
To improve buffering effect.Again due to being used cooperatively with sheet buffer structure, it is also convenient for installation buffer structure.Please refer to figure
12, Figure 12 show the partial enlarged view of the backlight module top view of another embodiment of the application, in the embodiment, buffer structure
For the schematic diagram of sheet buffer structure and the cooperation of triangular hill structure.It, can be by by sheet buffer structure in the embodiment
It is adhered to light guide plate surface, to complete the installation of buffer structure.
In specific embodiment, when buffer structure includes hemispherical protuberances structure, the radius of the hemispherical protuberances structure
It at least 50 μm, analyzes by the experiment and calculating of inventor, when the radius of hemispherical protuberances is greater than 50 μm, has preferable
Buffering effect, and convenient for production and installation.If the radius of hemispherical protuberances is too small, then with the buffering effect of sheet buffer structure
It is closer to, and manufacture difficulty is larger, higher cost.
As shown in figure 13, another embodiment of the application additionally provides a kind of display device 100, which includes
Any of the above-described kind of backlight module 10.
Backlight module in the display device includes buffer structure, and light guide plate can be made close to the corner part of the side of lamp bar
There is buffer structure between side frame, which can reduce light guide plate when being impacted, and occur between metal frame
Relative displacement drives the lamp bar being adhered on light guide plate so as to reduce light guide plate to the impact force and light guide plate of lamp bar
The mobile power of circuit board reduces lamp bar and tears risk to reduce the shearing force that lamp bar circuit board is subject to.The knot of the display device
Structure reliability is higher, and can have preferable display effect and higher service life.
In specific embodiment, the concrete type of display device is unlimited, which can be such as smartwatch, hand
Machine, tablet computer, laptop, any electronic equipment having a display function of electric paper book or television set etc..Such as Figure 13
Shown in display device be mobile phone.
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 (12)
1. a kind of backlight module, which is characterized in that including bottom plate, side frame and light guide plate, in which:
The bottom plate and the side frame form an accommodating space, and the light guide plate is arranged in the accommodating space, the leaded light
Plate includes the corner part of the corner region positioned at the light guide plate, and it is slow that at least one is arranged between the corner part and the side frame
Rush structure.
2. backlight module as described in claim 1, which is characterized in that between the corner region of the light guide plate and the bottom plate
With at least one buffer structure.
3. backlight module as described in claim 1, which is characterized in that the light guide plate further includes body regions, perpendicular to
Where the light guide plate on the direction of plane, the thickness of the corner region is less than or equal to the thickness of the body regions.
4. backlight module as described in claim 1, which is characterized in that the buffer structure is set to the light guide plate towards institute
State side frame side and/or
The buffer structure is set to the side frame towards the side of the light guide plate.
5. backlight module as described in claim 1, which is characterized in that the buffer structure has towards the surface of the light guide plate
There is reflecting layer.
6. backlight module as claimed in claim 5, which is characterized in that the reflecting layer includes white ink layer or silver color oil
Layer of ink.
7. backlight module as claimed in claim 5, which is characterized in that further include lamp bar, the lamp bar is set to the leaded light
The incident side of plate, the incident side of the light guide plate intersect with the light emission side of the light guide plate, and the reflecting layer is close to the lamp bar
The reflectivity of side is less than reflectivity of the reflecting layer far from the lamp bar side.
8. backlight module as described in claim 1, which is characterized in that further include multiple light sources, the multiple light source goes out light
Face is parallel with the light-emitting surface of the light guide plate.
9. backlight module as described in claim 1, which is characterized in that the corner part of the light guide plate include right angle corner portion,
Rounded corners portion, straight line chamfering corner part or ladder corner part.
10. backlight module as described in any one of claims 1 to 9, which is characterized in that the buffer structure includes elasticity bubble
Cotton, poly terephthalic acid class plastics, rubber or silica gel.
11. backlight module as described in any one of claims 1 to 9, which is characterized in that the buffer structure includes serrate projections
Structure, triangular hill structure, hemispherical protuberances structure, strip projected parts structure or foaming structure.
12. a kind of display device, which is characterized in that including backlight module as claimed in any one of claims 1 to 11.
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| CN111458784A (en) * | 2020-05-13 | 2020-07-28 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN111505864A (en) * | 2020-03-30 | 2020-08-07 | 深圳市晶泰液晶显示技术有限公司 | Backlight module and display device |
| CN111638615A (en) * | 2020-06-12 | 2020-09-08 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN112201168A (en) * | 2020-10-30 | 2021-01-08 | 武汉天马微电子有限公司 | Buffer structure and manufacturing method thereof, composite buffer structure and display device |
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| CN115097563A (en) * | 2022-07-14 | 2022-09-23 | 友达光电（昆山）有限公司 | Optical assembly and display device using same |
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