CN108761902A - Backlight module with reflector plate - Google Patents
Backlight module with reflector plate Download PDFInfo
- Publication number
- CN108761902A CN108761902A CN201810413140.XA CN201810413140A CN108761902A CN 108761902 A CN108761902 A CN 108761902A CN 201810413140 A CN201810413140 A CN 201810413140A CN 108761902 A CN108761902 A CN 108761902A
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- light sources
- light
- reflector plate
- backlight module
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- 230000033228 biological regulation Effects 0.000 claims abstract description 29
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000005606 hygroscopic expansion Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 241000278713 Theora Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a backlight module with a reflector plate, which comprises a bottom plate, a plurality of light sources arranged on the bottom plate, the reflector plate and one or more light regulation and control devices. The reflector plate covers the bottom plate and allows the light source to emit light outwards through the bottom plate. A plurality of pre-cut lines are formed on the reflecting sheet; these precut lines pass between parts of adjacent light sources, respectively. The light regulating device is arranged on the reflector plate and covers at least one light source. The light generated by the light source is emitted to the light control device, and the light is controlled by the light control device. At least a portion of the light modulating means is aligned with at least a portion of the precut line.
Description
Technical field
The present invention relates to a kind of backlight modules of tool reflecting surface；Specifically, the present invention relates to have on a kind of reflecting surface
The backlight module of pre- secant design.
Background technology
Plane and curved-surface display device have been widely used among various electronic device, such as mobile phone, a
People's object wearing device, TV, host used for vehicle, PC, digital camera, hand held electronic game etc..However as resolution ratio,
The continuous improvement that narrow frame equal-specification requires, the optical design in display device are also tested therewith.
By taking liquid crystal display device as an example, optical appearance usually ceases manner of breathing with the backlight module for being set to display panel rear
It closes.By taking traditional direct type backlight module as an example, in order to reach preferable light utilization ratio, it will usually in the back of the body of directly-down light source
Reflecting plate is arranged in side, is again introduced into backlight module with recycling the light not used.In addition, in order to change optical optics row
For various optical element can then be arranged on reflecting plate.However since reflecting plate is easy to make moist or be heated and expand, simultaneously
It causes the optical element being arranged on while being lifted or deforming, and then influence optical appearance.In addition, in assembling optical element
It is typically easy to that assembling is made to be not easy because that can not align when on reflecting plate, can equally influence the optical appearance of product.
Invention content
The purpose of the present invention is to provide a kind of backlight module, the situation of its included reflector plate protuberance can be reduced.
The purpose of the present invention is to provide a kind of backlight modules, and efficiency when assembled can be improved.
Backlight module includes bottom plate, the multiple light sources being set on bottom plate, reflector plate and one or more light regulation devices.Instead
It penetrates piece to be covered on bottom plate, and light source is allowed to send out light across bottom plate.A plurality of pre- secant is formed on reflector plate；These
Pre- secant is respectively by between the adjacent light source of part.One be arranged by this, when reflective sheet portions region because make moist, be heated or its
His reason and when expanding, the situation of reflector plate protuberance can be partly limited in the range limited by the pre- secant section in part
It is interior, and reduce the range influenced.For another aspect, reflector plate generates the situation of comprehensive protuberance because of expansion also can therefore quilt
Multiple regions defined by pre- secant are dispersed in, the excessively high possibility of specific position bump height is decreased in.
Light regulation device is set on reflector plate, and is covered on an at least light source.The light that light source generates, which projects, to be arrived at
Light regulation device, and light is regulated and controled by light regulation device.Being at least partially align along for light regulation device is at least partly pre-
Secant；One it is arranged by this, you can more easily assemble light regulation device on reflector plate.Further, since reflector plate is because of expansion
And the situation swelled is influenced by pre- secant and is suppressed, therefore top plate not will produce excessive change at a distance from light source
Change, and optical appearance is stabilized.
Description of the drawings
Fig. 1 is the embodiment element exploded view of backlight module；
Fig. 2 is the embodiment vertical view of backlight module；
Fig. 3 is another embodiment schematic diagram of backlight module；
Fig. 4 is another embodiment schematic diagram of backlight module；
Fig. 5 is the embodiment schematic diagram that light changing device has protrusion；
Fig. 6 is the embodiment sectional view of backlight module；
Fig. 7 is another embodiment sectional view of reflector plate.
Symbol description
100 bottom plates
300 light sources
500 reflector plates
501 perforation
510 pre- secants
511 intersection points
513 pre- slots
530 reflector plate blocks
700 smooth regulation devices
Specific implementation mode
The present invention provides a kind of backlight module, preferably can be applied in display device.Display device preferably includes liquid crystal
The non-spontaneous property display panel such as display panel or electrophoretic display panel；And it preferably can be applied to computer monitor, TV, monitoring
On device, automobile-used host.In addition, display device also can operate on other electronic devices, such as mobile phone, digital camera, the palm
The display screen of mo(u)ld top half Game device etc..
As shown in Figure 1, backlight module includes bottom plate 100, multiple light sources 300, reflector plate 500 and one or more light regulation and control dress
Set 700.Bottom plate 100 can preferably be made of plastics or metal, for carrying light source 300 and the circuit of control light source 300.Light source 300
Preferably point light source, such as light emitting diode, but not limited to this.Light source 300 is preferably arranged in line-column matrix in bottom plate
To form several rows and ordered series of numbers in different directions on 100.However in different embodiments, light source 300 can also other modes row
Row setting.
Reflector plate 500 is covered on bottom plate 100, and light source 300 is allowed to send out light across reflector plate 500.Preferably
For, multiple perforation 501 are formed on reflector plate 500, and light source 300 is then located in perforation 501, thus be able to send out light
Line.As shown in Figure 1, being formed with a plurality of pre- secant 510 on reflector plate 500；In a preferred embodiment, pre- secant 510 is with roulette
Mode formed, that is, by the setting of the conllinear joint-cutting of multistage separately to be formed.However in different embodiments, pre- secant
510 are alternatively the line of rabbet joint for not cutting through reflector plate 500, or can generate the structure of weakening strength in specific position for other.Such as Fig. 1
Shown, these pre- secants 510 are respectively by between the adjacent light source of part 300；In other words, the both sides of pre- secant 510 are laid
There is light source 300, and pre- secant 510 then extends there through.In this embodiment, pre- secant 510 is parallel to each other, thus by reflector plate
500 are defined as multiple strips side by side.
One it is arranged by this, when 500 subregion of reflector plate is when making moist, being heated or other reasons due tos expands, reflector plate
In the range of the situations of 500 protuberances can be partly limited in and be limited by pre- 510 section of secant in part, and reduce the model influenced
It encloses.For another aspect, reflector plate 500 generated because of expansion comprehensive protuberance situation also can therefore be dispersed in it is multiple by pre-
The region that secant 510 is defined decreases in the excessively high possibility of specific position bump height.
As shown in Figure 1, light regulation device 700 is set on reflector plate 500, and it is covered on an at least light source 300.Preferably
For, the light that light source 300 generates projects arrival light regulation device 700, and is regulated and controled to light by light regulation device 700.
Light is allowed to leave light regulation device 700 again for example, light regulation device 700 can reflex to some light after different location, and
The optical diaphragm 900 of top is arrived at, and then keeps light distribution more uniform, but not limited to this；Light regulation device 700 also can be right
Light carries out the adjustment, such as direction of travel, phase, color etc. of other forms.In this embodiment, light source regulation device 700
Be formed as strip, and there are top plate 710 and two opposite side plates 730.Top plate 710 is formed as elongated rectangular shape and along light source
The row or column of 300 arrangement forms extends, and two side plates 730 then bend respectively from the relatively long end of top plate 710 and stretch out.Top plate
Multiple light holes 711 are preferably formed on 710, to allow light to penetrate；And light hole 711 preferably may also set up in side plate 730
On.Two side plates 730 can be mutually parallel, but can be also flared out relative to top plate 710 or to inside contracting.Have per side plate 730
Positioning end 731 far from top plate 710, light regulation device 700 is then set to by positioning end 731 on reflector plate 500, and is covered
In on the light source 300 of a line, hemistich, a row or half row.
As shown in Figures 1 and 2, light regulation device 700 be located at parallel and adjacent to two pre- secants 510 between, and both sides
Positioning end 731 respectively with the part of two pre- secants 510 or part segment alignment.However in various embodiments, light regulates and controls
Device 700 also can be only aligned with the positioning end of side 731 with a pre- secant 510, or be carried out with other parts and pre- secant 510
Alignment.In the present embodiment, positioning end 731 is aligned the ora terminalis for indicating positioning end 731 with pre- secant 510 on reflector plate 500
Upright projection is Chong Die with pre- secant 510.However in different embodiments, it may also indicate that the ora terminalis of positioning end 731 in reflector plate 500
On upright projection and pre- secant 510 be close and keeping parallelism.Preferably, positioning end 731 can be overlapped with whole pre- secant 510
Or the mode that keeps a distance parallel with pre- secant 510 is aligned；However in different embodiments, it also can only be cut in advance with certain
Part segment alignment in line 510.One it is arranged by this, you can more easily assemble light regulation device 700 in reflector plate 500
On.Further, since the situation that reflector plate 500 swells due to expansion is suppressed by the influence of pre- secant 510, therefore top plate
710 not will produce excessive variation at a distance from light source 300, and optical appearance is stabilized.Especially when positioning end 731
When being aligned in the setting of pre- secant 510, since the height that reflector plate 500 swells near pre- secant 510 is more limited, it is more easy to
Distance change between limitation top plate 710 and light source 300.
In the embodiment shown in fig. 3, light regulation device 700 is then formed as halfpipe, and is covered in a row or column
Light source 300 on.The light regulation device 700 for being formed as halfpipe is preferably equally aligned with long side with pre- secant 510, to increase group
The convenience of dress.
Fig. 4 show another embodiment of the present invention, and in the present embodiment, pre- secant 510 is not only arranged with single direction,
But it is interspersed between the row and column of 300 arrangement form of light source.In other words, 510 middle part of pre- secant is divided into lateral setting, and
Another part is then longitudinally disposed, to staggeredly define multiple reflector plate blocks 530.Preferably, each reflector plate block
530 are each formed with perforation 501 for accommodating light source 300 or light source 300 being allowed to pass through.When because lower section circuit, light source 300 need to carry out
Repair, replace or other factors and need to by reflector plate 500 remove heavy industry when, you can will only need the partial mirror block of heavy industry
530 detach along pre- secant 510, without removing full wafer reflector plate 500.
Separately as shown in figure 4, in this embodiment, these staggered pre- secants 510 can form multiple intersection points 511.Side plate
730 positioning end 731 extends sufficient piece 733 and is bonded with reflector plate 500, and the corner part of sufficient piece 733 then can be used as anchor point 735
And it is corresponding with one of above-mentioned intersection point 511, to achieve the effect that be aligned light regulation device 700.In various embodiments,
Also above-mentioned anchor point 735 can be formed in the other parts of 730 positioning end 731 of side plate, such as hole can be formed on sufficient piece 733
It is aligned with intersection point 511 as anchor point 735.
Fig. 5 show another embodiment of the present invention.In the present embodiment, the positioning end 731 of light regulation device 700 is arranged
There is protrusion 750.Protrusion 750 is preferably distributed along positioning end 731 at intervals, to form the structure of entire row double wedge shape.It cuts in advance
Line 510 is by 513 compartment of terrain arrangement form of a plurality of pre- slot.In device light regulation device 700, can accordingly be stretched with protrusion 750
Enter in pre- slot 513, to be aligned and position light regulation device 700 on reflector plate 500.
Fig. 6 show an embodiment sectional view of backlight module.In the present embodiment, pre- secant 510 is also crisscrossly
Multiple reflector plate blocks 530 are formed, and light source 300 is then respectively distributed in each reflector plate block 530.Preferably, light source
300 meet following relationship with the setting of immediate pre- secant 510：
Wherein, L：Light source center to pre- secant vertical range；
α：The hygroscopic expansion coefficient or coefficient of thermal expansion of reflector plate；
h：The height of light source.
By above-mentioned setting, even if generating the situation swelled because reflector plate 500 expands in reflector plate block 530,
500 bump height of reflector plate near perforation 501 can be also restricted, such as not higher than the top surface of light source 300, therefore shape subtracts
Less to the influence in optical appearance.Specifically, in the present embodiment when reflector plate 500 expands and generates protuberance, due to pre-
The position of secant 510 has weaker structural strength, therefore relatively may thus locate to generate the situation of bending or bending.At this time
The position of pre- secant 510 will maintain to be close to bottom plate 100, and reflector plate 500 then generated between adjacent pre- secant 510 it is grand
It rises, to reduce the situation excessively swelled in certain part.Meanwhile setting by above-mentioned light source 300 and immediate pre- secant 510
Relationship is set, the influence to optical appearance can be further reduced.Must it should be noted that, above-mentioned setting relationship is not limited to pre- secant
510 for it is crisscross when situation；It is also applicable when pre- secant 510 is same direction.
In the embodiment shown in fig. 7, multiple pre- secants can be set between the adjacent rows of 300 arrangement form of light source
510.Similarly, also can multiple pre- secants 510 be set between adjacent two row of 300 arrangement form of light source.One it is arranged by this,
Light source 300 can be made to be reduced at a distance between pre- secant 510, and then the protuberance degree of each reflector plate block 530 is made to subtract
It is few, to reduce the influence generated to optical appearance due to reflector plate 500 expands.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only the example for implementing the present invention.
It must be noted that, it has been disclosed that embodiment be not limiting as the scope of the present invention.On the contrary, be contained in claim spirit and
The modification of range and impartial setting are included in the range of this invention.
Claims (8)
1. a kind of backlight module, including：
Bottom plate；
Multiple light sources are respectively arranged on the bottom plate；
Reflector plate is covered on the bottom plate and those light sources is allowed to pass through；Wherein, a plurality of pre- secant point is formed on the reflector plate
Not by between those adjacent light sources of part；And
At least one smooth regulation device, is set on the reflector plate, and each light regulation device be covered at least one light source it
On；
Wherein, which is at least partly aligned at least partly those pre- secants.
2. backlight module as described in claim 1, wherein each light regulation device has：
Top plate；And
Both side plate bends from two opposite ends of the top plate stretch out respectively；Each side plate has the positioning end far from the top plate；
Wherein, one of the positioning end of at least side plate and those pre- secants are aligned.
3. backlight module as claimed in claim 2, wherein the pre- secant being aligned with the positioning end includes at least one pre- slot,
It is provided with protrusion on the positioning end, which stretches into the pre- slot.
4. backlight module as claimed in claim 2, wherein those light sources are arranged in line-column matrix, those pre- secants then staggeredly divide
It is distributed in those light sources to be formed by between rows and columns to form multiple intersection points, anchor point and those is formed on each positioning end
At least one corresponds in intersection point.
5. backlight module as described in claim 1, wherein those light sources are arranged in line-column matrix, those pre- secants then staggeredly divide
Those light sources are distributed in be formed by between rows and columns, at least one smooth regulation device respectively along those light sources be formed by row or
Row extend to cover those corresponding light sources, and are located between two adjacent pre- secants.
6. backlight module as described in claim 1, wherein those light sources are arranged in line-column matrix, those pre- secants then staggeredly divide
It is distributed in those light sources to be formed by between rows and columns, the setting of at least one light source and the immediate pre- secant meets following pass
It is formula：
Wherein, L：The light source center to the pre- secant vertical range；
α：The hygroscopic expansion coefficient or coefficient of thermal expansion of the reflector plate；
h：The height of the light source.
7. having between adjacent two row or adjacent two row that backlight module as claimed in claim 6, wherein those light sources are formed
The a plurality of pre- secant.
8. backlight module as described in claim 1, wherein those light sources are arranged in line-column matrix, those pre- secants then staggeredly divide
It is distributed in those light sources to be formed by between rows and columns to form multiple reflector plate blocks, at least partly those reflector plate blocks are distinguished
It is formed with a perforation, those light sources are located in those perforation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107108487A TWI661250B (en) | 2018-03-13 | 2018-03-13 | Backlight module and display device |
| TW107108487 | 2018-03-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108761902A true CN108761902A (en) | 2018-11-06 |
| CN108761902B CN108761902B (en) | 2022-03-22 |
Family
ID=64009456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810413140.XA Active CN108761902B (en) | 2018-03-13 | 2018-05-03 | Backlight module with reflector plate |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108761902B (en) |
| TW (1) | TWI661250B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113066383A (en) * | 2021-03-31 | 2021-07-02 | 深圳创维－Rgb电子有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113066383A (en) * | 2021-03-31 | 2021-07-02 | 深圳创维－Rgb电子有限公司 | Display device |
| CN113066383B (en) * | 2021-03-31 | 2023-04-07 | 深圳创维－Rgb电子有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201939131A (en) | 2019-10-01 |
| TWI661250B (en) | 2019-06-01 |
| CN108761902B (en) | 2022-03-22 |
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