CN208999719U - LED backlight lamp bar, backlight module and display device - Google Patents
LED backlight lamp bar, backlight module and display device Download PDFInfo
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- CN208999719U CN208999719U CN201821409390.8U CN201821409390U CN208999719U CN 208999719 U CN208999719 U CN 208999719U CN 201821409390 U CN201821409390 U CN 201821409390U CN 208999719 U CN208999719 U CN 208999719U
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Abstract
The utility model embodiment discloses a kind of LED backlight lamp bar, backlight module and display device, multiple lamp beads and at least one block are provided on the wiring board of the LED backlight lamp bar, gap is provided between per two adjacent lamp beads, at least one block is located in the gap of at least one two neighboring lamp bead, and the height of block is greater than the height of lamp bead.LED backlight lamp bar, backlight module and display device provided by the embodiment of the utility model, in the lamp bead gap setting block of LED backlight lamp bar, and the height of block is greater than the height of lamp bead, to be played a supporting role by block, the lamp bead of LED backlight lamp bar applied to backlight module does not contact directly with diaphragm in backlight module, so that heat can not be transferred directly to diaphragm when lamp bead shines in LED backlight lamp bar, and then guarantee the backlight uniformity of backlight module in display device, improve the display effect of display device.
Description
Technical field
The utility model embodiment is related to field of display technology more particularly to a kind of LED backlight lamp bar, backlight module and shows
Showing device.
Background technique
The performance of backlight directly affects the imaging quality of display device, and the cost of backlight and electric energy consuming account for about it is whole
The half of a display device cost and power consumption, and fine, large-sized display device, need matching high-performance backlight
Technology.Therefore high brightness, low-power consumption, low cost and more frivolous backlight technology are the key that restrict display device development.
Backlight can provide light source, especially liquid crystal display device (Liquid for the display panel of display device
Crystal Display, LCD).The backlight of LCD is mainly made of light source, light guide plate, optical film piece, plastic frame etc..Mesh
The backlight of preceding LCD mainly has electroluminescence (Electro Luminescent, EL), cathode fluorescent tube (Cold
Cathode Fluorescent Lamp, CCFL) and light emitting diode (Light-Emitting Diode, LED) three types.
Wherein, LED is main light source in current LCD.Usual LED light bar is arranged in the both sides of entire LCD backlight or one side (may
It is long side, it is also possible to short side), then this light source is converted to by area source by light guide plate, so that LCD is able to carry out image, text
The display of the information such as word.
But existing display device is to meet highlighted demand, while considering the problems such as radiating, and is generallyd use equidistant
Bilateral lamp bar design, thus will will increase the complexity of the cost and technique of lamp bar.And bilateral lamp bar is due to installing or making
It is influenced with condition etc., two lamp bars can be made to be not at same level, and then influence the leaded light of light guide plate, and generated light leakage and show
As.Meanwhile the lamp bead of existing unilateral lamp bar is directly contacted with diaphragm, will will increase diaphragm in backlight module in use
Temperature, may cause edge for a long time and warp so that the being consistent property of spacing of lamp bead and light guide plate incident side has difficulties,
The uniformity of backlight is difficult to ensure, to influence the display effect of display device.
Utility model content
In view of this, the utility model embodiment provides a kind of LED backlight lamp bar, backlight module and display device, energy
Enough being consistent property of spacing for solving lamp bead and light guide plate incident side in the prior art have difficulties, and the uniformity of backlight is difficult to protect
Card, thus the technical issues of influencing display device display effect.
In a first aspect, the utility model embodiment provides a kind of LED backlight lamp bar, comprising: wiring board, multiple lamp beads,
And at least one block；
Multiple lamp beads and at least one described block are set on the wiring board；Two adjacent lamp beads it
Between there is gap, be provided with the block in the gap of at least one two adjacent lamp bead；Wherein, the height of the block
Degree is greater than the height of the lamp bead.
Optionally, the clearance distance for being provided with the gap of adjacent two lamp bead of the block, which is greater than, to be not provided with
The clearance distance in the gap of adjacent two lamp bead of the block.
Optionally, width of the lamp bead on two neighboring lamp bead line direction is greater than two adjacent lamps
The clearance distance of pearl.
Optionally, the height h of the block meets:
Wherein, 2 θ are the light emitting angle of the lamp bead, and L is to be provided between adjacent two lamp bead of the block
Stand-off distance from.
Optionally, the distance between the block and the adjacent lamp bead S meet:
H tan θ < S < L.
Optionally, the lamp bead includes twin crystal lamp bead.
Second aspect, the utility model embodiment additionally provide a kind of backlight module, comprising: light guide plate, optical diaphragm, with
And above-mentioned LED backlight lamp bar；
It is contacted at the top of the block of the LED backlight lamp bar with the incidence surface of the light guide plate；
The optical diaphragm is located on the light-emitting surface of the light guide plate.
Optionally, the backlight module includes a LED backlight lamp bar；The light guide plate includes a side incident
Side；The side incident face contact at the block top and the light guide plate of the LED backlight lamp bar.
Optionally, the backlight module includes: two LED backlight lamp bars；Two LED backlight lamp bars are opposite to be set
It sets；The light guide plate includes two opposite side incident sides；
Two LED backlight lamp bars are located at the opposite two side incident side of the light guide plate；And the LED
The side incident face contact at the block top and the light guide plate of backlight lamp bar.
The third aspect, the utility model embodiment additionally provide a kind of display device, including above-mentioned backlight module.
The utility model embodiment provides a kind of LED backlight lamp bar, backlight module and display device, the LED backlight
It is provided with multiple lamp beads and at least one block on the wiring board of item, is provided with gap between every two adjacent lamp beads, at least
One block is located in the gap of at least one two neighboring lamp bead, and the height of block is greater than the height of lamp bead, to solve
It has determined in the prior art since the lamp bead of backlight lamp bar in backlight of display device mould group is directly contacted with diaphragm, lamp bead produces when shining
Raw heat causes the temperature of diaphragm to increase, and in turn results in edge warping, influences the display of the uniformity and display device of backlight
The technical issues of effect.Relative to existing LED backlight lamp bar, LED backlight lamp bar provided by the embodiment of the utility model, backlight
Mould group and display device, in the lamp bead gap setting block of LED backlight lamp bar, and the height of block sends out the height with lamp bead, from
And played a supporting role by block, the lamp bead of the LED backlight lamp bar applied to backlight module is straight not with diaphragm in backlight module
Contact so that heat can not be transferred directly to diaphragm when lamp bead shines in LED backlight lamp bar, and then reaches guarantee display device
The backlight uniformity of middle backlight module improves the technical effect of the display effect of display device.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of LED backlight lamp bar provided by the embodiment of the utility model；
Fig. 2 is a kind of enlarged structure schematic diagram of LED backlight lamp bar provided by the embodiment of the utility model；
Fig. 3 is a kind of luminous structural schematic diagram of LED backlight lamp bar provided by the embodiment of the utility model；
Fig. 4 is a kind of structural schematic diagram of backlight module provided by the embodiment of the utility model；
Fig. 5-6 is the structural schematic diagram of backlight lamp bar position in a kind of backlight module provided by the embodiment of the utility model；
Fig. 7 is a kind of structural schematic diagram of display device provided by the embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.Do not conflicting
In the case where, the feature in the utility model embodiment and embodiment can be combined with each other.
The utility model embodiment provides a kind of LED backlight lamp bar, can using in the backlight module of display device,
The display device can be liquid crystal display device, such as the computer with display, mobile terminal etc..Fig. 1 is the utility model
A kind of structural schematic diagram for LED backlight lamp bar that embodiment provides, Fig. 2 are a kind of LED back provided by the embodiment of the utility model
The enlarged structure schematic diagram of light lamp bar.In conjunction with referring to fig. 1 and fig. 2, LED backlight lamp bar provided in this embodiment includes: line
Road plate 11, multiple lamp beads 12 and at least one block 13.Multiple lamp beads 12 and at least one block 13 are set to wiring board 11
On；There is gap between two adjacent lamp beads 12, be arranged in the gap of at least one adjacent two lamp beads 12i-1 and 12i
There is block 13；Wherein, the height of block 13 is greater than the height of lamp bead 12.
It should be noted that multiple lamp beads 12 can be expressed as 121~12n in the present embodiment, i.e., have in LED backlight lamp bar
Have n lamp bead, the label of each lamp bead can with lamp bead 121, lamp bead 122, lamp bead 123 ..., lamp bead 12i-1, lamp bead 12i ...,
Lamp bead 12j-1, lamp bead 12j ..., lamp bead 12n, wherein n, i, j are the positive integer more than or equal to 2.Corresponding LED backlight lamp bar
In be additionally provided at least one block 13, i.e., the number of block can be 1 or 1 or more, depending on actual needs, herein not
It limits.When the number of block be m when, block marked as block 131, block 132 ..., block 13m, wherein m is positive whole
Number, and m is less than n.
Since LED has the characteristics that low-power consumption, lower calorific value, brightness is high, the service life is long, and it is used for the backlight of display device
Source, promotes the color representation that display device is shown, provides the color spectrum face coincideing with its picture point colour filter itself for display device
Color.LED backlight structure is broadly divided into single group tandem power supply or multiple groups tandem/parallel power supply.Wherein, single group tandem electricity
Source uses lower constant current, needs for input power to be promoted to the total forward voltage level for meeting tandem power supply, to drive LED；
And multiple groups tandem and/or parallel LED power need higher constant current to drive, but there are lower high voltage requirements,
All have multiple LED lamp beads by the way that LED lamp bead to be serially and/or parallelly connected together in two kinds of LED backlight structures.
In conjunction with referring to fig. 1 and fig. 2, LED backlight lamp bar provided by the embodiment of the utility model sets multiple lamp beads 12
It sets on wiring board 11, so that multiple LED lamp beads are serially and/or parallelly connected together, constitutes the basic structure of LED backlight lamp bar.
There is gap between two lamp beads 12i-1 and 12i adjacent in LED backlight lamp bar, 12j-1 and 12j, the size in the gap according to
Depending on concrete application, it is not limited thereto.Can generate heat when shining due to lamp bead 12, and by generated heat transfer to
On its other component directly contacted.For example, being located at LED when LED backlight lamp bar is applied to the backlight module of display device and carrying on the back
Diaphragm in light lamp bar will be contacted directly with lamp bead 12, and the temperature of diaphragm is caused to increase, and will if things go on like this make diaphragm that warpage occur,
Influence the luminous uniformity of display device.By the way that gear is arranged in the gap of at least one adjacent two lamp beads 12i-1 and 12i
Block 13, and the height h of the block 13 is greater than the height H of lamp bead 12, so as to be applied to display device in LED backlight lamp bar
When, the lamp bead 12 of LED backlight lamp bar is not direct and film contact, but block 13 is used to be used as support frame and film contact.
LED backlight lamp bar provided by the embodiment of the utility model, in the lamp bead gap setting block of LED backlight lamp bar, and
The height of the height hair and lamp bead of block, thus played a supporting role by block, the LED backlight lamp bar applied to backlight module
Lamp bead do not contacted directly with diaphragm in backlight module so that in LED backlight lamp bar lamp bead shine when heat can not directly transmit
To diaphragm, and then reach the backlight uniformity for guaranteeing backlight module in display device, improves the skill of the display effect of display device
Art effect.
Continuing with referring to fig. 1 and fig. 2, adjacent two lamp bead 12i-1 and 12i, 12j-1 in LED backlight lamp bar
Gap is provided between 12j, the clearance distance in the gap is depending on practical application.In at least one two adjacent lamp bead
Block 13 is provided between 12i-1 and 12i.Due to the presence of block 13, the width w of block 13 can occupy certain clearance gap
From this clearance distance L for allowing for the gap of adjacent two lamp bead 12i-1 and 12i that are provided with block 13 is greater than not set
There is the clearance distance a in the gap of adjacent two the lamp bead 12j-1 and 12j of block 13.The adjacent lamp bead 12 of any two as a result,
Between clearance distance might not be equal so that the lamp bead of LED backlight lamp bar is rendered as non-equidistant form.
Optionally, lamp bead 12 is greater than two adjacent lamp bead 12i-1 in the width b being connected on two 12 line directions of lamp bead
With the clearance distance L of the 12i and clearance distance a of lamp bead 12j-1 and 12j so that LED backlight lamp bar shine
Brightness meets the needs of practical application.Meanwhile there is certain luminous blind area between two lamp beads 12, it shines in blind area at this
Light is weaker, and generation the phenomenon that be easy to produce firefly, causes display device light leakage.
Fig. 3 is a kind of luminous structural schematic diagram of LED backlight lamp bar provided by the embodiment of the utility model.In conjunction with Fig. 1, figure
Shown in 2 and Fig. 3, lamp bead 12 has certain light emitting angle, i.e., the light emitting region of two adjacent lamp beads 12 in LED backlight lamp bar
It partially overlaps, without being dim light area 14, the presence meeting in the dim light area 14 by adjacent two 12 light emitting regions of lamp bead covering
So that LED backlight lamp bar generates light leakage in practical applications.There is low-power consumption, height to make LED backlight lamp bar in practical applications
Under the premise of the features such as brightness, avoid its generate light leakage phenomena, thus in LED backlight lamp bar two neighboring lamp bead 12 clearance gap
It should meet some requirements from L and a, the height h of block 13 and the distance between block 13 and lamp bead 12.
Optionally, the height h of block 13 meets:
Wherein, 2 θ are the light emitting angle of lamp bead 12, and L is to be provided between adjacent two the lamp bead 12i-1 and 12i of block
The spacing distance of gap.
Correspondingly, the distance between block 13 and adjacent lamp bead 12i-1 or lamp bead 12i S meet:
Htan θ < S < L
Known to as a result, under the premise of the height h of block 13 is greater than the height H of lamp bead 12, the height of block should also be limited
It is scheduled in certain threshold range, so that the luminous of lamp bead 12 meets the needs of practical application in LED backlight lamp bar.Meanwhile
The distance between the lamp bead 12i-1 adjacent thereto or lamp bead 12i of block 12 S also should be in certain threshold range.
It illustratively, can be preferably twin crystal lamp bead by lamp bead 12.The light emitting angle of the twin crystal lamp bead 12 is 120 °, dim light area
14 section is the triangle of clearance distance L or a that a bottom edge c is equal between two neighboring lamp bead 12.When not set block
When gap spacing a between 13 two neighboring lamp bead 12j-1 and 12j is 1.9mm, the height d of 14 triangle of dim light area is
0.49mm (height for disregarding lamp bead).And be provided with block 13 and adjacent lamp bead 12i-1 or 12i between gap interval S be
0.6mm, the height d of 14 triangle of dim light area is 0.64mm at this time.It is wanted evading firefly phenomenon and meeting dim light area 14 to shine
Under the premise of asking, the height h of block 13 is chosen as 1mm.
The utility model embodiment between two neighboring lamp bead by being arranged block, and the height of block and block and lamp
Clearance distance between pearl meets some requirements, existing so as to prevent LED backlight lamp bar from generating light leakage in practical applications
As, and then guarantee the requirement of the uniformity of luminance and light emission luminance of LED backlight lamp bar, improve the display effect of display device.
The utility model embodiment additionally provides a kind of backlight module, which includes above-mentioned LED backlight lamp bar, can
Applied in display device.Fig. 4 is a kind of structural schematic diagram of backlight module provided by the embodiment of the utility model.Such as Fig. 4 institute
Show, backlight module provided by the embodiment of the utility model includes light guide plate 20, optical diaphragm 30 and the utility model embodiment
The LED backlight lamp bar 10 of offer.Wherein, 13 top of block of LED backlight lamp bar 10 is contacted with the incidence surface of light guide plate 20；Optics
Diaphragm 30 is located on the light-emitting surface of light guide plate 20.
The light source that the function of backlight module is display device well-off brightness and being evenly distributed, thus can
Normal display image.The substrate principle of backlight module be will common point or linear light source, through succinct effectively organisation conversion at
High brightness and the uniform area source of gray scale.As shown in figure 4, LED backlight in backlight module provided by the embodiment of the utility model
Item 10 is used as light source.The light guiding points that there are many bottom surfaces of light guide plate 20, the linear light source that LED backlight lamp bar 10 issues are emitted to each
Light guiding points so as to enter from the incidence surface of light guide plate 20, and are projected from light-emitting surface.Light guide plate 20 in usual backlight module
Bottom surface is additionally provided with reflector plate (not shown), which can be reflected back the light that bottom surface is exposed in light guide plate 20, uses
To improve the service efficiency of light.The optical diaphragm 30 of backlight module includes diffusion sheet, prismatic lens etc..Light source 20 is led through the light guide plate
Light source is atomized through the diffusate on diffusion sheet after out, and light source is concentrated to the light-emitting surface of diffusion sheet；And prism facets are used for
Increase luminous brightness, such as by the principle of prism, spuious light is concentrated in together, to increase the use of light source
Rate.
To avoid in the backlight module course of work, the heat of lamp bead 12 is transferred directly to light guide plate in LED backlight lamp bar 10
On 20, so that light guide plate 20 generates heat, warpage is generated, influences guide-lighting uniformity, the utility model embodiment LED backlight lamp bar 10
12 gap setting of lamp bead have block 13, by the way that the height of block 13 to be set above to the height of lamp bead 12, block 13 is enabled to make
For the support frame of LED backlight lamp bar 10, so that there is certain distance between 12 top of lamp bead and the incidence surface of light guide plate 20,
When preventing lamp bead 12 from shining, light guide plate 20 is directly transferred heat to.
Optionally, the number of LED backlight lamp bar is related to brightness needed for display device in backlight module.Fig. 5-6 is this
The structural schematic diagram of backlight lamp bar position in a kind of backlight module that utility model embodiment provides.Refering to what is shown in Fig. 5, this is practical
The backlight module that new embodiment provides preferably includes a LED backlight lamp bar 10 provided by the embodiment of the utility model.Its
In, light guide plate 20 includes a side incident side, correspondingly, at the top of the block of the LED backlight lamp bar 10 and side of light guide plate 20
Incidence surface contact.
In another embodiment, as shown in fig. 6, backlight module provided by the embodiment of the utility model can also include two
A LED backlight lamp bar 10 provided by the embodiment of the utility model, light guide plate 20 include two opposite side incident sides.Two
LED backlight lamp bar 10 is oppositely arranged, and is located at the opposite two side incident side of light guide plate 20.At this point, LED backlight
The side incident face contact at the block top and light guide plate 20 of item 10.
This practical new embodiment additionally provides a kind of display device, which for example can be liquid crystal display device,
Backlight module provided by the embodiment of the utility model is provided in the liquid crystal display device.Fig. 7 is that the utility model embodiment mentions
A kind of structural schematic diagram of the display device supplied.As shown in fig. 7, display device 200 provided by the embodiment of the utility model includes
Backlight module 100 provided by the embodiment of the utility model.
The utility model embodiment is by being provided with middle LED backlight provided by the embodiment of the utility model in backlight module
Item so as to meet the radiating requirements of light module of display device, and then guarantees that the backlight of backlight module in display device is equal
Even property, improves the display effect of display device.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of LED backlight lamp bar characterized by comprising wiring board, multiple lamp beads and at least one block；
Multiple lamp beads and at least one described block are set on the wiring board；Have between two adjacent lamp beads
There is gap, is provided with the block in the gap of at least one two adjacent lamp bead；Wherein, the height of the block is big
In the height of the lamp bead.
2. LED backlight lamp bar according to claim 1, which is characterized in that be provided with adjacent two institute of the block
The clearance distance for stating the gap of lamp bead is greater than the clearance gap for being not provided with the gap of adjacent two lamp bead of the block
From.
3. LED backlight lamp bar according to claim 1, which is characterized in that the lamp bead connects in the two neighboring lamp bead
Width on line direction is greater than the clearance distance of two adjacent lamp beads.
4. LED backlight lamp bar according to claim 2, which is characterized in that the height h of the block meets:
Wherein, 2 θ are the light emitting angle of the lamp bead, and L is the clearance gap for being provided with adjacent two lamp bead of the block
From.
5. LED backlight lamp bar according to claim 4, which is characterized in that between the block and the adjacent lamp bead
Distance S meet:
h tanθ<S<L。
6. described in any item LED backlight lamp bars according to claim 1~5, which is characterized in that the lamp bead includes twin crystal lamp
Pearl.
7. a kind of backlight module characterized by comprising described in light guide plate, optical diaphragm and any one of claim 1~6
LED backlight lamp bar；
It is contacted at the top of the block of the LED backlight lamp bar with the incidence surface of the light guide plate；
The optical diaphragm is located on the light-emitting surface of the light guide plate.
8. backlight module according to claim 7, which is characterized in that the backlight module includes a LED backlight
Lamp bar；The light guide plate includes a side incident side；At the top of the block of the LED backlight lamp bar and side of the light guide plate
Incidence surface contact.
9. backlight module according to claim 7, which is characterized in that the backlight module includes: two LED backlights
Lamp bar；Two LED backlight lamp bars are oppositely arranged；The light guide plate includes two opposite side incident sides；
Two LED backlight lamp bars are located at the opposite two side incident side of the light guide plate；And the LED backlight
The side incident face contact at the block top and the light guide plate of lamp bar.
10. a kind of display device, which is characterized in that including the described in any item backlight modules of claim 7~9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821409390.8U CN208999719U (en) | 2018-08-30 | 2018-08-30 | LED backlight lamp bar, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821409390.8U CN208999719U (en) | 2018-08-30 | 2018-08-30 | LED backlight lamp bar, backlight module and display device |
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| CN208999719U true CN208999719U (en) | 2019-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361891A (en) * | 2019-07-29 | 2019-10-22 | 武汉华星光电技术有限公司 | Backlight module |
-
2018
- 2018-08-30 CN CN201821409390.8U patent/CN208999719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361891A (en) * | 2019-07-29 | 2019-10-22 | 武汉华星光电技术有限公司 | Backlight module |
| CN110361891B (en) * | 2019-07-29 | 2021-01-15 | 武汉华星光电技术有限公司 | Backlight module |
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