CN106090730A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN106090730A CN106090730A CN201610532178.XA CN201610532178A CN106090730A CN 106090730 A CN106090730 A CN 106090730A CN 201610532178 A CN201610532178 A CN 201610532178A CN 106090730 A CN106090730 A CN 106090730A
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- Prior art keywords
- light source
- depressed part
- backlight module
- light
- lobe
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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
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- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
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- 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
- F21V17/104—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 using feather joints, e.g. tongues and grooves, with or without friction
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- 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
- F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to Display Technique field, open a kind of backlight module and display device.Backlight module includes: backboard, and described backboard is formed the most alternatively distributed multiple depressed part and lobe；Multiple first light sources, each first light source all correspondences are installed in a depressed part, and the light direction of each first light source is towards the opening of corresponding depressed part；Multiple secondary light sources, each secondary light source is all corresponding to be installed on a lobe and is positioned at described lobe and deviates from the side of depressed part, and the light direction of the light direction of each secondary light source and the first light source is identical；In the orientation of depressed part and lobe, each first light source is less than rising angle and the rising angle of secondary light source of the first light source by the angle of the light of outgoing in corresponding depressed part.The backlight rising angle of this backlight module is adjustable, then the size using the display view angle of the display device of this backlight module is adjustable, improves the suitability of display device and the experience of user.
Description
Technical field
The present invention relates to Display Technique field, particularly to a kind of backlight module and display device.
Background technology
Along with the development of science and technology, computer and mobile terminal (such as mobile phone and panel computer) have been widely used for office and learn
Habit field.When user uses computer or mobile terminal in public, content shown in its display device may be by
People around user spies on, so that user produces the risk of leakage of private information.
At present frequently with reducing the rising angle of backlight of backlight module with the method reducing the display view angle of display device,
So that the user that the content shown by display device can only be in the backlight rising angle in-scope of backlight module sees,
Thus reduce the probability that display content is spied on by the people around user, to protect the privacy of user；But, the many people of needs altogether
During with viewing display content, the narrower display device of this display view angle is unfavorable for that many people watch together, thus reduces display dress
The suitability put, and make the experience of user decline.
Summary of the invention
The invention provides a kind of backlight module and display device, use the display view angle of the display device of this backlight module
Size adjustable, improve the suitability of display device, improve the experience of user simultaneously.
For achieving the above object, the present invention provides following technical scheme:
A kind of backlight module, including:
Backboard, described backboard is formed the most alternatively distributed multiple depressed part and lobe；
Multiple first light sources, each first light source all correspondences are installed in a depressed part, and the going out of each first light source
Light direction is towards the opening of corresponding depressed part；
Multiple secondary light sources, each secondary light source all correspondences are installed on a lobe and are positioned at described lobe and deviate from
The side of depressed part, and the light direction of the light direction of each secondary light source and the first light source is identical；
Along arbitrary depressed part towards the direction of the lobe being adjacent, each first light source is by corresponding depressed part
The angle of the light of interior outgoing is less than rising angle and the rising angle of secondary light source of the first light source.
In the backlight module that the present invention provides, backboard includes the most alternatively distributed multiple depressed part and lobe, by
It is arranged in depressed part in the first light source, along arbitrary depressed part towards the direction of the lobe being adjacent, the first light source
Emergent light blocked by depressed part, its angle less than the rising angle of the first light source, and due to secondary light source emergent light not
Being blocked, the first light source is less than the rising angle of secondary light source by the angle of the light of outgoing in depressed part；At this backlight module
Use during, when the backlight of conventional rising angle need to be provided, control the first light source and close and make secondary light source open, by
Emergent light in secondary light source is not blocked, and now backlight module can provide the backlight of conventional rising angle, to realize normally regarding
Angle shows；When the backlight of narrower rising angle need to be provided, control the first light source and open and make secondary light source close, due to first
The emergent light of light source is blocked by depressed part, and the first light source is by the going out less than secondary light source of the angle of the light of outgoing in depressed part
Angular, now backlight module provides rising angle less backlight, shows realizing narrow visual angle；
The backlight rising angle of backlight module that the present invention provides is adjustable, then use display device aobvious of this backlight module
Show that the size at visual angle is adjustable, therefore improve the suitability of display device, improve the experience of user simultaneously.
Preferably, each depressed part be bearing of trend with along arbitrary depressed part towards the side of the lobe being adjacent
To vertical groove, and described groove is equally spaced along arbitrary depressed part towards the direction of the lobe being adjacent.
Further, each first light source and each secondary light source are LED lamp bar.
Preferably, each first light source is movably installed in a depressed part by height adjustment mechanism, and described height is adjusted
Joint mechanism for regulation along being perpendicular to each first light source on the direction of described backboard and corresponding with described first light source recessed
Distance between the opening in the portion of falling into.
Further, described height adjustment mechanism includes being arranged at light direction side convex deviating from each first light source
Wheel, and it is connected and is used for driving the drive mechanism of described cam rotation with described cam, the cam surface of described cam is with described
First light source deviates from the side of its light direction and offsets.
Preferably, each first light source, and/or, the rising angle of each secondary light source is 115 °-120 °, each first
Light source is 50 °-60 ° by the angle of the light of outgoing in corresponding depressed part.
Preferably, along arbitrary depressed part towards the direction of the lobe being adjacent, each first light source is in backlight
The width of the irradiation area on the exiting surface of module is more than or equal to the distance between two adjacent the first light sources；
In the orientation along depressed part and lobe, the irradiation on the exiting surface of backlight module of each secondary light source
The width in region is more than or equal to the distance between adjacent two secondary light sources.
Preferably, each first light source is met following public affairs by the size of the angle of the light of outgoing in corresponding depressed part
Formula:
Tan (θ/2)=L/2H；
Wherein, described θ is that each first light source is by the angle of the light of outgoing in corresponding depressed part；
Described L is along arbitrary depressed part towards the width of each depressed part on the direction of the lobe being adjacent；
Described H is along being perpendicular on the direction of described backboard, between described first light source and the opening of described depressed part
Distance.
Preferably, also include being arranged on described backboard and be positioned at each depressed part opening towards side, for
Support the gripper shoe of optical film material.
Further, described gripper shoe uses polymethyl methacrylate or makrolon material to prepare.
Preferably, also include being arranged on described backboard for installing the reflection of the side of the first light source and secondary light source
Sheet.
Present invention also offers a kind of display device, including backlight module as above.
In the display device that the present invention provides, the backboard of its backlight module includes the most alternatively distributed multiple depressed part
And lobe, owing to the first light source is arranged in depressed part, the emergent light of the first light source is blocked by depressed part, and its angle is less than
The rising angle of the first light source, and owing to the emergent light of secondary light source is not blocked, the first light source is by the light of outgoing in depressed part
The angle of line is less than the rising angle of secondary light source；During the use of this display device, show normal viewing angle need to be realized
Time, control the first light source and close and make secondary light source open, owing to the emergent light of secondary light source is not blocked, now backlight module
The backlight of conventional rising angle can be provided, show realizing normal viewing angle；When the display of narrow visual angle need to be realized, control the first light source
Opening and make secondary light source close, owing to the emergent light of the first light source is blocked by depressed part, the first light source is gone out by depressed part
The angle of the light penetrated is less than the rising angle of secondary light source, and now backlight module provides the backlight that rising angle is less, with reality
Existing narrow visual angle shows；
The size of the display view angle of the display device that the present invention provides is adjustable, therefore improves the suitability of display device,
Improve the experience of user simultaneously.
Accompanying drawing explanation
Fig. 1 is that the backlight module of the embodiment of the present invention one offer is along arbitrary depressed part towards the projection being adjacent
Structural representation on the direction in portion；
Fig. 2 a is the backlight module that provides of Fig. 1 fundamental diagram when realizing conventional visual angle display；
Fig. 2 b is the backlight module that provides of Fig. 1 fundamental diagram when realizing the display of narrow visual angle；
Fig. 3 a is the structural representation of the height adjustment mechanism that the embodiment of the present invention one provides；
Fig. 3 b is that the height adjustment mechanism of the embodiment of the present invention one offer is along arbitrary depressed part towards be adjacent
Structural representation on the direction of individual lobe；
Fig. 4 is the dimensional structure schematic diagram of the backlight module that the embodiment of the present invention one provides.
Reference:
10, backboard；11, depressed part；12, lobe；21, the first light source；
211, LED；212, substrate；30, height adjustment mechanism；31, cam；
32, power transmission shaft；33, drive mechanism；40, gripper shoe.
Detailed description of the invention
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
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Embodiment one:
Present embodiments providing a kind of backlight module, shown in Figure 1, Fig. 1 is that backlight module is along arbitrary depressed part court
Sectional view on the direction of the lobe being adjacent, this backlight module includes:
Backboard 10, backboard 10 is formed multiple the most alternatively distributed depressed part 11 and lobe 12；In being embodied as,
Backboard 10 can use sheet metal component, then depressed part 11 and lobe 12 can use process for stamping to prepare；
Multiple first light sources 21, each first equal correspondence of light source 21 is installed in a depressed part 11, and each first light
The light direction in source 21 is towards the opening of corresponding depressed part 11；
Multiple secondary light sources 22, each equal correspondence of secondary light source 22 is installed on a lobe 12 and is positioned at lobe 12
Deviate from the side of depressed part 11, and the light direction of the light direction of each secondary light source 22 and the first light source 21 is identical；
Shown in Figure 1, the direction Y shown in Fig. 1 is along any one depressed part 11 towards the projection being adjacent
The direction in portion 12, and direction Y is parallel with backboard, each first light source 21 is by the angle of the light of outgoing in corresponding depressed part 11
A is less than rising angle (not shown) and the rising angle B of secondary light source 22 of the first light source 21, and rising angle is light source
Light scattering angle, the present embodiment provides in this backlight module, convex along any one depressed part 11 towards be adjacent
Rising on the direction Y in portion 12, the included angle A between the line of the opening of each first light source 21 and its corresponding depressed part 11 is less than
The rising angle of the first light source 21, i.e. first light source 21 launch light some blocked by depressed part 11 and can not be by recessed
Injection in the portion of falling into 11, then make the first light source 21 by the included angle A of the light of outgoing in corresponding depressed part 11 less than its rising angle；
In the present embodiment, the rising angle of the first light source 21 and secondary light source 22 may be the same or different, it is preferable that for ease of light source original paper
Selection and improve efficiency when the first light source 21 and secondary light source 22 are installed, the first light source 21 and the beam angle of secondary light source 22
Spend identical.
In the backlight module that the present invention provides, backboard 10 includes multiple the most alternatively distributed depressed part 11 and lobe
12, owing to the first light source 21 is arranged in depressed part 11, along the long side direction Y of backboard 10, the emergent light of the first light source 21
By blocking of depressed part 11, its by the emergent light included angle A in depressed part 11 less than the rising angle of the first light source 21, and due to the
The emergent light of two light sources 22 is not blocked, and the first light source 21 is less than secondary light source by the included angle A of the light of outgoing in depressed part 11
The rising angle B of 22；
See shown in Fig. 2 a, during the use of this backlight module, when the backlight of conventional rising angle need to be provided, control
Make the first light source 21 close and make secondary light source 22 open, owing to the emergent light of secondary light source 22 is not blocked, now backlight mould
Group can provide the backlight of conventional rising angle (generally 110 °～120 °), and this rising angle B can realize normal viewing angle and show；
See shown in Fig. 2 b, when the backlight of narrower rising angle need to be provided, control the first light source 21 and open and make second
Light source 22 is closed, and due to emergent light the blocking by depressed part 11 of the first light source 21, the first light source 21 is by outgoing in depressed part 11
The included angle A of light less than the rising angle B of secondary light source 22, now backlight module provides rising angle less than conventional beam angle
The backlight of degree, shows realizing narrow visual angle；
In being embodied as, because using the display device of above-mentioned backlight module in use, beholder typically need to prevent
The stop bit people in the beholder left and right sides spies on display content or need to share display screen with the people being positioned at the beholder left and right sides
Curtain, therefore, the direction Y along any one depressed part 11 towards the lobe 12 being adjacent shown in Fig. 1 preferably with viewing
The sight line width of person is parallel, to adjust display device visual angle on the sight line width of beholder；
Additionally, the direction Y along any one depressed part 11 towards the lobe 12 being adjacent shown in Fig. 1 also can edge
The height of sighting line direction of beholder, to adjust display device visual angle on the height of sighting line direction of beholder.
Because the backlight rising angle of the backlight module of present invention offer is adjustable, then use the display device of this backlight module
The size of display view angle is adjustable, therefore improves the suitability of display device, improves the experience of user simultaneously.
In a kind of optimal way, for ease of carrying out the processing of depressed part 11, each depressed part 11 is that bearing of trend is appointed with edge
One depressed part 11 is towards the groove vertical for direction Y of the lobe 12 being adjacent, and groove caves in along along any one
Portion 11 is equally spaced towards the direction Y of the lobe 12 being adjacent；Correspondingly, each lobe 12 is and depressed part
11 the most adjacent bar shaped boss, and the bearing of trend of each bar shaped boss all with along any one depressed part 11 towards being adjacent
The direction Y of a lobe 12 vertical, and boss is along any one depressed part 11 towards the lobe 12 being adjacent
Direction Y is equally spaced；In being embodied as, when backboard 10 uses sheet metal component, groove and boss can use process for stamping to add equally
Work is formed.
Further, when depressed part 11 is above-mentioned groove and lobe 12 is above-mentioned boss, each first light source 21 He
Each secondary light source 22 is LED lamp bar, and LED lamp bar is installed along the bearing of trend of groove and boss.Shown in Figure 4, each
LED lamp bar all includes substrate 212 and the multiple LED 211 being arranged on substrate 212.
In a kind of optimal way, for regulation the first light source 21 further by the folder of the light of outgoing in corresponding depressed part 11
Angle A, to carry out the both view angle adjustment during display of narrow visual angle, each first light source 21 is movably installed in one by height adjustment mechanism
In depressed part 11, height adjustment mechanism for regulation along being perpendicular on the direction of backboard 10 each first light source 21 and right with it
Distance between the opening of the depressed part 11 answered；Height adjustment mechanism scalable the first light source 21 and corresponding depressed part 11
Opening between distance, then can corresponding regulation the first light source 21 and its corresponding depressed part 11 opening line between
The size of included angle A, and then adjust the size of part that the light that the first light source 21 launches is blocked by depressed part 11, thus realize the
One light source 21 is by the size of the included angle A of the light of outgoing in corresponding depressed part 11, specifically, the first light source 21 and with
When distance between the opening of the depressed part 11 of its correspondence increases, the first light source 21 is by outgoing in corresponding depressed part 11
The included angle A of light reduces, when the distance between the opening of the first light source 21 and corresponding depressed part 11 reduces, and the first light
Source 21 is increased by the included angle A of the light of outgoing in corresponding depressed part 11.
Above-mentioned height adjustment mechanism can use mode as illustrated in figures 3 a and 3b to realize, and sees shown in Fig. 3 a, highly
Governor motion 30 includes the cam 31 being arranged at the light direction side deviating from each first light source 21,31, the cam of cam 31
The side deviating from its light direction with the first light source 21 offsets, and is connected with cam 31 and is used for driving what cam 31 rotated to drive
Motivation structure 33, drive mechanism 33 can be motor, and drive mechanism 33 is connected with cam 31 by power transmission shaft 32；
First light source 21 is slidably mounted in depressed part 11, and can transport along the direction being perpendicular to backboard 10 relative to backboard 10
Dynamic, it is preferable that the first light source 21 uses above-mentioned LED lamp bar, and the substrate 212 of lamp bar can arrange through hole or fluting, in depression
Portion 11 is internal arranges the guide pillar being slidably matched with through hole or fluting, can realize being slidably matched of LED lamp bar and depressed part 11；When
So, the method for being slidably connected between the first light source 21 and depressed part 11 is not limited to aforesaid way, as long as the first light source 21 can be realized
Can slide in depressed part 11 along the direction being perpendicular to backboard 10；
See shown in Fig. 3 b, when drive mechanism 33 is rotated by power transmission shaft 32 band moving cam 31, the cam surface of cam 31
A Slideslip of its light emission side is deviated from relative to the first light source 21, so that between the first light source 21 and the center of rotation of cam 31
Distance change with the contact position of the first light source 21 with 31, cam, and then make the first light source 21 can be along shown in Fig. 3 b
Slide in the direction being perpendicular to backboard 10, it is achieved the tune of the distance between the opening of the first light source 21 and corresponding depressed part 11
Joint.
Above-mentioned height adjustment mechanism, in addition to using cam 31 mechanism to realize, also can be adopted and realize in other ways, as the
One light source 21 deviates from the side of its light emission side and arranges motor, leading screw isoline drive disk assembly, or deviates from the first light source 21
The side of its light emission side arranges two voussoirs that inclined-plane offsets to carry out the driving of the first light source 21.
In a kind of optimal way, each first light source 21, and/or, the rising angle of each secondary light source 22 is 115 °-
120 °, each first light source 21 is 50 °-60 ° by the included angle A of the light of outgoing in corresponding depressed part 11；Secondary light source
The rising angle of 22 employings 115 °-120 ° can make to provide conventional viewing angle to watch to adapt to many people during conventional visual angle display, and
Each first light source 21 is 50 °-60 ° by the included angle A of the light of outgoing in corresponding depressed part 11 can make narrow visual angle show
Viewing angle less for more conventional viewing angle is provided during pattern.
In a kind of optimal way, for improving the uniformity of the backlight of the offer of the first light source 21 and secondary light source 22, reduce
There is dark space spaced apart in the screen of display device using this backlight module, shown in Figure 4, recessed along any one
Falling into portion 11 towards on the direction Y of the lobe 12 being adjacent, each first light source 21 is on the exiting surface of backlight module
The width F of irradiation area more than or equal to distance K between adjacent two the first light sources 21；
On along any one depressed part 11 towards the direction Y of the lobe 12 being adjacent, each secondary light source 22
The width of the irradiation area on the exiting surface of backlight module is more than or equal to the distance between adjacent two secondary light sources 22, because of
Secondary light source 22 and the first light source 21 in like manner, not shown in Fig. 4；
Because the first whole light sources 21 irradiation area on the exiting surface of backlight module connects or overlaps, make the back of the body
The exiting surface of light module is all covered by the irradiation area of the first light source 21, can improve backlight uniform that the first light source 21 provides
Degree；In like manner, all of secondary light source 22 irradiation area on the exiting surface of backlight module connects or overlaps, and makes backlight
The exiting surface of module is all covered by the irradiation area of secondary light source 22, can improve backlight uniform that secondary light source 22 provides
Degree.
In a kind of optimal way, when the dimensional structure carrying out depressed part 11 designs, at the first light source 21 by corresponding recessed
When in sunken portion 11, the included angle A of the light of outgoing has determined that, shown in Figure 4, each first light source 21 is by corresponding depressed part 11
The size of the included angle A of the light of interior outgoing meets following equation:
Tan (θ/2)=L/2H；
Wherein, described θ is that each first light source 21 is by the included angle A of the light of outgoing in corresponding depressed part 11；
L is along any one depressed part 11 towards each depressed part 11 on the direction Y of the lobe 12 being adjacent
Width；
H is to be perpendicular on the direction of backboard 10 on edge, the distance between the first light source 21 and the opening of depressed part 11.
According to above-mentioned formula, the included angle A of the light of outgoing in the first required light source 21 is by corresponding depressed part 11
When size has determined that, can calculate at the direction Y fovea superior along any one depressed part 11 towards the lobe 12 being adjacent
Fall into the width L in portion 11 and along the distance being perpendicular on the direction of backboard 10 between first light source 21 and the opening of depressed part 11
H, in order to carry out the dimensional structure design of depressed part 11.
In a kind of optimal way, shown in Figure 1, the backlight module that the present embodiment provides also includes being arranged on backboard 10
And be positioned at each depressed part 11 opening towards side, for supporting the gripper shoe 40 of optical film material.
Further, gripper shoe 40 uses polymethyl methacrylate (PMMA) or Merlon (PC) lamp light transmission high
Prepared by transparent material.
In a kind of optimal way, for improving the backlight module utilization rate to light source, the backlight module that the present embodiment provides is also
Reflector plate including the side being arranged on backboard 10 for installing the first light source 21 and secondary light source 22；Reflector plate should be arranged at
Each depressed part 11 and each lobe 12 are towards the first light source 21 and the side of the light emission side of secondary light source 22, with by the first light
The light towards backboard 10 that source 21 and secondary light source 22 produce reflexes to deviate from the side of backboard 10, to improve the utilization of light source
Rate.
Embodiment two:
Present embodiments provide a kind of display device, including backlight module as above.
In this display device, the backboard 10 of its backlight module includes multiple the most alternatively distributed depressed part 11 and projection
Portion 12, owing to the first light source 21 is arranged in depressed part 11, emergent light the blocking by depressed part 11 of the first light source 21, its angle
A is less than the rising angle of the first light source 21, and owing to the emergent light of secondary light source 22 is not blocked, the first light source 21 is by depressed part
In 11, the included angle A of the light of outgoing is less than the rising angle of secondary light source 22；During the use of this display device, needing reality
During existing normal viewing angle display, control the first light source 21 and close and make secondary light source 22 open, due to the emergent light of secondary light source 22
Not blocked, now backlight module can provide the backlight of conventional rising angle, shows realizing normal viewing angle；Narrow regarding need to realized
During the display of angle, control the first light source 21 and open and make secondary light source 22 close, owing to the emergent light of the first light source 21 is by depressed part
11 block, the first light source 21 is less than the rising angle of secondary light source 22 by the included angle A of the light of outgoing in depressed part 11, now
Backlight module provides rising angle less backlight, shows realizing narrow visual angle；
The size of the display view angle of the display device that the present invention provides is adjustable, therefore improves the suitability of display device,
Improve the experience of user simultaneously.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the embodiment of the present invention
Bright spirit and scope.So, if these amendments of the present invention and modification belong to the claims in the present invention and equivalent technologies thereof
Within the scope of, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a backlight module, it is characterised in that including:
Backboard, described backboard is formed the most alternatively distributed multiple depressed part and lobe；
Multiple first light sources, each first light source all correspondences are installed in a depressed part, and each first light source go out light side
To the opening towards corresponding depressed part；
Multiple secondary light sources, each secondary light source all correspondences are installed on a lobe and are positioned at described lobe and deviate from depression
The side in portion, and the light direction of the light direction of each secondary light source and the first light source is identical；
Along arbitrary depressed part towards the direction of the lobe being adjacent, each first light source is gone out by corresponding depressed part
The angle of the light penetrated is less than rising angle and the rising angle of secondary light source of the first light source.
Backlight module the most according to claim 1, it is characterised in that each depressed part be bearing of trend with along arbitrary depression
The groove that portion is vertical towards the direction of the lobe being adjacent, and described groove along along arbitrary depressed part towards with its phase
The direction of an adjacent lobe is equally spaced.
Backlight module the most according to claim 2, it is characterised in that each first light source and each secondary light source are
LED lamp bar.
Backlight module the most according to claim 1, it is characterised in that each first light source is movable by height adjustment mechanism
Be installed in a depressed part, described height adjustment mechanism for regulation along being perpendicular on the direction of described backboard each first
Distance between the opening of light source and the depressed part corresponding with described first light source.
Backlight module the most according to claim 4, it is characterised in that described height adjustment mechanism includes being arranged at and deviates from often
The cam of the light direction side of individual first light source, and it is connected and is used for driving the driving of described cam rotation with described cam
Mechanism, the side that the cam surface of described cam deviates from its light direction with described first light source offsets.
Backlight module the most according to claim 1, it is characterised in that the rising angle of each first light source is 115 °-
120 °, and/or, the rising angle of each secondary light source is 115 °-120 °；
Each first light source is 50 °-60 ° by the rising angle of the light of outgoing in corresponding depressed part.
Backlight module the most according to claim 1, it is characterised in that convex along arbitrary depressed part towards be adjacent
The direction in the portion of rising, the width of each first light source irradiation area on the exiting surface of backlight module is more than or equal to adjacent two
Distance between individual first light source；
Along arbitrary depressed part towards the direction of the lobe being adjacent, each secondary light source is at the exiting surface of backlight module
On the width of irradiation area more than or equal to the distance between adjacent two secondary light sources.
Backlight module the most according to claim 1, it is characterised in that each first light source is by outgoing in corresponding depressed part
The size of angle of light meet following equation:
Tan (θ/2)=L/2H；
Wherein, described θ is that each first light source is by the angle of the light of outgoing in corresponding depressed part；
Described L is along arbitrary depressed part towards the width of each depressed part on the direction of the lobe being adjacent；
Described H is along being perpendicular on the direction of described backboard, the opening of each first light source and corresponding depressed part it
Between distance.
9. according to the backlight module described in any one of claim 1-8, it is characterised in that also include being arranged on described backboard also
Be positioned at each depressed part opening towards side, for supporting the gripper shoe of optical film material.
Backlight module the most according to claim 9, it is characterised in that described gripper shoe uses polymethyl methacrylate
Or prepared by makrolon material.
11. according to the backlight module described in any one of claim 1-8, it is characterised in that also include being arranged on described backboard
For installing the reflector plate of the side of the first light source and secondary light source.
12. 1 kinds of display devices, it is characterised in that include the backlight module as described in any one of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532178.XA CN106090730B (en) | 2016-07-04 | 2016-07-04 | A kind of backlight module and display device |
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| CN108897169A (en) * | 2018-07-25 | 2018-11-27 | 京东方科技集团股份有限公司 | Illuminating module and its control method, display device |
| CN109188769A (en) * | 2018-09-30 | 2019-01-11 | 合肥京东方显示光源有限公司 | A kind of backlight, display panel and display device |
| CN110189628A (en) * | 2019-06-28 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN111474747A (en) * | 2020-04-20 | 2020-07-31 | 京东方科技集团股份有限公司 | Backlight module, driving method thereof and display device |
| CN112967617A (en) * | 2021-02-09 | 2021-06-15 | 维沃移动通信有限公司 | Display module and electronic device |
| CN114613284A (en) * | 2022-03-01 | 2022-06-10 | 厦门天马微电子有限公司 | Display panel and display device |
| US11442299B2 (en) | 2019-05-17 | 2022-09-13 | Chongqing Boe Optoelectronics Technology Co., Ltd. | Display module, display device and viewing-angle switching method |
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| CN108897169A (en) * | 2018-07-25 | 2018-11-27 | 京东方科技集团股份有限公司 | Illuminating module and its control method, display device |
| CN108897169B (en) * | 2018-07-25 | 2021-10-12 | 京东方科技集团股份有限公司 | Light-emitting module, control method thereof and display device |
| CN109188769A (en) * | 2018-09-30 | 2019-01-11 | 合肥京东方显示光源有限公司 | A kind of backlight, display panel and display device |
| CN109188769B (en) * | 2018-09-30 | 2021-08-17 | 合肥京东方显示光源有限公司 | Backlight source, display panel and display device |
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| CN110189628A (en) * | 2019-06-28 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN111474747A (en) * | 2020-04-20 | 2020-07-31 | 京东方科技集团股份有限公司 | Backlight module, driving method thereof and display device |
| US20210325731A1 (en) * | 2020-04-20 | 2021-10-21 | Beijing Boe Optoelectronics Technology Co., Ltd. | Backlight module, driving method thereof and display apparatus |
| CN112967617A (en) * | 2021-02-09 | 2021-06-15 | 维沃移动通信有限公司 | Display module and electronic device |
| CN114613284A (en) * | 2022-03-01 | 2022-06-10 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114613284B (en) * | 2022-03-01 | 2023-11-21 | 厦门天马微电子有限公司 | Display panel and display device |
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