CN206497275U - Straight-down negative LED light bar and backlight module - Google Patents
Straight-down negative LED light bar and backlight module Download PDFInfo
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- CN206497275U CN206497275U CN201621260754.1U CN201621260754U CN206497275U CN 206497275 U CN206497275 U CN 206497275U CN 201621260754 U CN201621260754 U CN 201621260754U CN 206497275 U CN206497275 U CN 206497275U
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Abstract
The utility model discloses a kind of straight-down negative LED light bar, including：Substrate, LED lamp bead on the substrate and the LED lens being located in the LED lamp bead are installed；The first adhesive layer, the phosphor powder layer for sealing the LED lamp bead are provided with around the incidence surface of the LED lens.Straight-down negative LED light bar of the present utility model hinders wet ability under conditions of not influenceing its optics to sample with preferable resistance oxygen.The utility model also provides a kind of down straight aphototropism mode set.
Description
Technical field
The utility model is related to LED technology field, more particularly to a kind of straight-down negative LED light bar and backlight module.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) because with low in energy consumption, radiationless, effective area it is big,
The features such as image quality is fine, picture color is stable, is widely used in electronic equipment.Liquid crystal display it is main by LCDs and
Backlight module is constituted, and the liquid crystal molecule in LCDs changes it in the presence of electric field and put in order, and backlight module is produced
The liquid crystal molecule that sufficient brightness and uniform light is passed through in LCDs, liquid crystal display then changes the light of transmitted light
Road, is modulated to light so that image frame is presented in liquid crystal display.
In general, it is different according to the position of backlight in backlight module, backlight module can be divided into downward back optical mode
Group and sidelight type backlight module.Wherein, the backlight of down straight aphototropism mode set is located at the bottom of backlight module, what backlight was sent
After mixed light of the light by certain space distance, LCDs is entered back into.Existing down straight aphototropism mode set uses LED mostly
(Light Emitting Diode) is used as backlight, it will usually LED is fabricated into straight-down negative LED light bar or LED array, is used for
Form area source.Therefore, straight-down negative LED light bar is as the backlight of down straight aphototropism mode set, and its illumination effect can directly affect
To the display effect of liquid crystal display.
The present inventor has found during the utility model is implemented：As shown in figure 1, existing straight-down negative LED light bar master
To be made up of substrate 1, LED lamp bead 2 and LED lens 3, LED lamp bead 2 is installed on substrate 1, and LED lens 3 cover at LED lamp bead 1
The diffusion to LED light is realized to change the light path that LED lamp bead 1 emits beam in top.Wherein, as shown in Fig. 2 LED lamp bead 2 is wrapped
LED chip 21, reflective bowl 22 and electrode pin 23 are included, the peace of LED chip 21 turns in the reflective bottom of bowl 22, and passes through gold thread 24
It is connected with electrode pin 23, the surrounding of LED chip 21 is enclosed with layer of silica gel 25, and the exiting surface of LED lamp bead 2 is coated with phosphor powder layer
26.Because the surrounding of LED lamp bead 2 is layer of silica gel 25, moisture and oxygen can be prevented to penetrate into the inside of LED lamp bead 2 from surrounding, still
The exiting surface of LED lamp bead 2 is phosphor powder layer 26, and the phosphor powder layer 26 does not possess the ability of resistance dampness oxygen, if oxygen is from fluorescent material
Layer 26 is penetrated into inside LED lamp bead 2, then can aoxidize the silver layer in reflective bowl 22, make silver layer blackening and reduce the hair of LED lamp bead 2
Brightness, can also make the moisture-sensitive of gold thread 24 come off and shorten the life-span of LED lamp bead 2；If also, phosphor powder layer 26 is contacted with oxygen
It certain time, then can be decomposed, influence the photochromic of LED lamp bead 2.As shown in Fig. 1~2, existing straight-down negative LED light bar would generally be
Glue-line 100 is set between the exiting surface and LED lens 3 of LED lamp bead 2, for being sealed to phosphor powder layer 26 in LED lamp bead 2,
To realize resistance dampness oxygen.But, because being stained with glue-line 100 on the phosphor powder layer 26 of LED lamp bead 2 so that what LED lamp bead 2 was sent
Light, which has to pass through the glue-line 100, could enter in LED lens 3, and glue-line 100 can change the light path that LED lamp bead 2 emits beam, this
The optics taste of LED light bar can be had a strong impact on, and then influences the display effect of liquid crystal display.
Utility model content
In view of the above-mentioned problems, a kind of straight-down negative LED light bar of the present utility model and backlight module can not only be prevented in air
Oxygen and moisture penetrate into LED lamp bead inside, prevent oxygen from being contacted with the phosphor powder layer in LED lamp bead, moreover it is possible to avoid LED lamp bead
Exiting surface because adhesive layer pollute influence the optics of LED light bar to sample.
In order to solve the above technical problems, straight-down negative LED light bar of the present utility model, including：Substrate, installed in the substrate
On LED lamp bead and the LED lens that are located in the LED lamp bead；First is provided with around the incidence surface of the LED lens
Adhesive layer, the phosphor powder layer for sealing the LED lamp bead.
Straight-down negative LED light bar of the present utility model sets the first adhesive layer around the incidence surface of LED lens, this first glue
The phosphor powder layer that layer is used to seal the LED lamp bead is closed, oxygen can be prevented to be contacted with LED lamp bead phosphor powder layer, it is to avoid LED lamp bead
Phosphor powder layer be decomposed, simultaneously, moreover it is possible to prevent oxygen and moisture infiltration to the inside of LED lamp bead；Further, since the first bonding
Layer is arranged on around the incidence surface of LED lens so that the first adhesive layer will not pollute the incidence surface of LED lens, through LED lamp bead
The light that exiting surface is launched can be directly entered the incidence surface of LED lens, can effectively lift the optics taste of LED light bar.
As the improvement of such scheme, the LED lens pass through on first adhesive layer and the LED lamp bead exiting surface
Layer of silica gel connection.
As the improvement of such scheme, first adhesive layer is in sequential like.
As the improvement of such scheme, the LED lamp bead exiting surface is relative with the center of the LED lens incidence surfaces.
As the improvement of such scheme, first adhesive layer is in the annular of inner circle foreign side.
As the improvement of such scheme, it is saturating that area coverage of first adhesive layer in the layer of silica gel accounts for the LED
The 10%~80% of the incidence surface surrounding area of mirror.
As the improvement of such scheme, during first adhesive layer is layer of silica gel, epoxy resin layer and polysilazane layer
One or more combination；The rate of perviousness of first adhesive layer is less than 15 (g/m224h), oxygen transmission rate is less than 400 (cc/m224h)。
As the improvement of such scheme, the hardness of first adhesive layer is more than 60D.
As the improvement of such scheme, the electrode pin of the LED lamp bead passes through the second adhesive layer and the substrate connection.
In order to solve the above technical problems, the utility model also provides a kind of down straight aphototropism mode set, including：Diffuser plate, light
Film and any of the above-described straight-down negative LED light bar are learned, the straight-down negative LED light bar is located at the lower section of the diffuser plate, the optical film
Located at the top of the diffuser plate.
Down straight aphototropism mode set of the present utility model includes any of the above-described straight-down negative LED light bar, and the LED light bar is saturating in LED
First adhesive layer is set around the incidence surface of mirror, and first adhesive layer is used for the phosphor powder layer for sealing the LED lamp bead, can prevent
Oxygen is contacted with LED lamp bead phosphor powder layer, it is to avoid the phosphor powder layer of LED lamp bead is decomposed, simultaneously, moreover it is possible to prevent oxygen and moisture
Penetrate into the inside of LED lamp bead；Further, since the first adhesive layer is arranged on around the incidence surface of LED lens so that first glues
The incidence surface of LED lens will not be polluted by closing layer, and the light that the exiting surface through LED lamp bead is launched can be directly entered entering for LED lens
Smooth surface, can effectively lift the optics taste of the LED light bar and backlight module.
Brief description of the drawings
Fig. 1 is the structural representation of straight-down negative LED light bar in the prior art.
Fig. 2 is the structural representation of existing LED lamp bead.
Fig. 3 is a kind of structural representation of straight-down negative LED light bar of the utility model embodiment 1.
Fig. 4 is the top view that LED lamp bead and LED lens have been bonded in the utility model embodiment 1.
In figure：
1st, substrate 11, link position
2nd, LED lamp bead 21, LED chip
22nd, reflective cup 23, electrode pin
24th, gold thread 25, layer of silica gel
26th, phosphor powder layer 3, LED lens
31st, incidence surface 32, surrounding area
4th, the first adhesive layer 5, the second adhesive layer
6th, lens glue 100, glue-line
200th, fixed plate
Embodiment
Many details are elaborated in the following description to fully understand the utility model.But this practicality is new
Type can be implemented with the other modes for being much different from this description, and those skilled in the art can be without prejudice to the utility model
Similar popularization is done in the case of intension, therefore the utility model is not limited by following public specific embodiment.
Clear, complete description is carried out to the technical solution of the utility model with reference to specific embodiments and the drawings.
Fig. 3 is referred to, is a kind of structural representation of straight-down negative LED light bar of the utility model embodiment 1.
As shown in Figures 2 and 3, a kind of straight-down negative LED light bar of the present utility model, including：Substrate 1, installed in the base
LED lamp bead 2 on plate 1 and the LED lens 3 covered in the LED lamp bead 2；It is arranged at the incidence surface of the LED lens 3
The first adhesive layer 4 around 31, first adhesive layer 4 is used for the phosphor powder layer 26 for sealing the LED lamp bead 2.
Straight-down negative LED light bar of the present utility model sets the first adhesive layer 4 around the incidence surface 31 of LED lens 3, and this
One adhesive layer 4 is used for the phosphor powder layer 26 for sealing the LED lamp bead 2, and oxygen and the phosphor powder layer 26 of LED lamp bead 2 can be prevented to connect
Touch, it is to avoid the phosphor powder layer 26 of LED lamp bead 2 is decomposed, simultaneously, moreover it is possible to prevent oxygen and moisture infiltration to the interior of LED lamp bead 2
Portion；Further, since the first adhesive layer 4 is arranged on around the incidence surface 31 of LED lens 3 so that the first adhesive layer 4 will not pollute
The incidence surface 31 of LED lens 3, the light launched by the exiting surface of LED lamp bead 2 can be directly entered the incidence surface 31 of LED lens 3,
The optics taste of LED light bar can effectively be lifted.
Wherein, the LED lamp bead 2 and LED lens 3 may each comprise one or more, and they can be in bar on substrate 1
Shape, banding or matrix distribution, can also be other irregular distributions, and these are all equivalent protection domains of the present utility model.
Wherein, the LED lens 3 pass through the layer of silica gel 25 on first adhesive layer 4 and the exiting surface of LED lamp bead 2
It is tightly connected, first adhesive layer 4 is in sequential like so that the sealing effectiveness of first adhesive layer 4 is good.
Wherein, the incidence surface 31 of the LED lens 3 is relative with the exiting surface of the LED lamp bead 2, sends LED lamp bead 2
Light be not blocked, LED lens 3 can be directly entered.
Wherein, the electrode pin of the LED lamp bead 2 is connected by the link position 11 of the second adhesive layer 5 and the substrate 1
Connect, the material of second adhesive layer 5 is thermosetting conductive material.
Because the exiting surface of LED lamp bead can be rectangular, the incidence surface of LED lens can be rounded, to prevent going out for LED lamp bead
Smooth surface causes resistance oxygen to hinder wet ability or excessive and stick to entering for LED lens by bond area because the area bonded is too small
The optics of LED light bar is influenceed to sample in smooth surface, as shown in figs. 2 to 4, exiting surface of first adhesive layer 4 in LED lamp bead 2
On area coverage can in inner circle foreign side annular with the exiting surface shape with the shape of incidence surface 31 and LED lamp bead 2 of LED lens 3
Shape is fitted, and area coverage of first adhesive layer 4 in the layer of silica gel 25 is accounted for around the incidence surface 3 of the LED lens 3
The 10%~80% of area 32, to ensure that the first adhesive layer 4 can carry out good sealing to LED lamp bead 2.It should be understood that
When the shape of the exiting surface 31 of LED lens 3 is rectangle, ellipse, triangle or irregular figure, the first adhesive layer 4 can be according to LED
The different shape of the exiting surface 31 of lens 3 is coated, and the first adhesive layer 4 is not limited to the annular of above-mentioned inner circle foreign side, also
Can be other annulars, these are all equivalent protection domains of the present utility model.
Specifically, first adhesive layer 4 includes layer of silica gel, epoxy resin layer or polysilazane layer.
Preferably, first adhesive layer 4 can be polysilazane layer, and its hardness is 60D, and rate of perviousness is 10g/ (m2·
24h), oxygen transmission rate is 300cc/ (m2·24h)；First adhesive layer 4 can also be modified epoxy layer, and its hardness is 70D, thoroughly
Wet rate is 8g/ (m224h), oxygen transmission rate is 100cc/ (m2·24h)。
Preferably, in the above-described embodiments, in the incidence surface 31 of the exiting surface of the LED lamp bead 1 and the LED lens 3
Centre is relative, can make the light vertical incidence that LED lamp bead 1 is launched to the incidence surface 31 of LED lens 3.The utility model also provides one
Down straight aphototropism mode set is planted, including：Any of the above-described straight-down negative LED light bar, diffuser plate and optical film, the straight-down negative LED light bar
Located at the lower section of the diffuser plate, the optical film is located at the top of the diffuser plate.
As shown in figure 3, because the down straight aphototropism mode set includes any of the above-described straight-down negative LED light bar, the LED light bar exists
The surrounding of incidence surface 31 of LED lens 3 sets the first adhesive layer 4, and first adhesive layer 4 is used for the fluorescent material of sealing LED lamp bead 2
Layer, can prevent oxygen and the phosphor powder layer of LED lamp bead 2 from contacting, it is to avoid the phosphor powder layer of LED lamp bead 2 is decomposed, simultaneously, moreover it is possible to
Prevent oxygen and moisture infiltration to the inside of LED lamp bead 2；Further, since the first adhesive layer 4 is arranged on the incidence surface of LED lens 3
Around 31 so that the first adhesive layer 4 will not pollute the incidence surface 31 of LED lens 3, the light that the exiting surface through LED lamp bead 2 is launched
The incidence surface 31 of LED lens 3 can be directly entered, the optics taste of the LED light bar and backlight module can be effectively lifted.
It is described above, only it is preferred embodiment of the present utility model, not does any formal to the utility model
Limitation, therefore all contents without departing from technical solutions of the utility model are implemented according to technical spirit of the present utility model to more than
Any simple modification, equivalent variations and modification that example is made, in the range of still falling within technical solutions of the utility model.
Claims (9)
1. a kind of straight-down negative LED light bar, it is characterised in that including：
Substrate, LED lamp bead on the substrate and the LED lens being located in the LED lamp bead are installed；
The first adhesive layer, the phosphor powder layer for sealing the LED lamp bead are provided with around the incidence surface of the LED lens；Its
In, the LED lens are connected by first adhesive layer with the layer of silica gel on the LED lamp bead exiting surface.
2. straight-down negative LED light bar as claimed in claim 1, it is characterised in that first adhesive layer is in sequential like.
3. straight-down negative LED light bar as claimed in claim 1, it is characterised in that the LED lamp bead exiting surface and the LED are saturating
The center of mirror incidence surface is relative.
4. straight-down negative LED light bar as claimed in claim 1, it is characterised in that first adhesive layer is in the ring of inner circle foreign side
Shape.
5. straight-down negative LED light bar as claimed in claim 1, it is characterised in that first adhesive layer is in the layer of silica gel
Area coverage account for the LED lens incidence surface surrounding area 10%~80%.
6. straight-down negative LED light bar as claimed in claim 1, it is characterised in that first adhesive layer is layer of silica gel, asphalt mixtures modified by epoxy resin
One or more layers combination in lipid layer and polysilazane layer；The rate of perviousness of first adhesive layer is less than 15g/ (m224h), thoroughly
Oxygen rate is less than 400cc/ (m2·24h)。
7. straight-down negative LED light bar as claimed in claim 1, it is characterised in that the hardness of first adhesive layer is more than 60D.
8. straight-down negative LED light bar as claimed in claim 1, it is characterised in that the electrode pin of the LED lamp bead passes through second
Adhesive layer and the substrate connection.
9. a kind of down straight aphototropism mode set, it is characterised in that including：It is any in diffuser plate, optical film and such as claim 1~8
Straight-down negative LED light bar described in, the straight-down negative LED light bar is located at the lower section of the diffuser plate, and the optical film is located at institute
State the top of diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260754.1U CN206497275U (en) | 2016-11-11 | 2016-11-11 | Straight-down negative LED light bar and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260754.1U CN206497275U (en) | 2016-11-11 | 2016-11-11 | Straight-down negative LED light bar and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497275U true CN206497275U (en) | 2017-09-15 |
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ID=59800946
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621260754.1U Active CN206497275U (en) | 2016-11-11 | 2016-11-11 | Straight-down negative LED light bar and backlight module |
Country Status (1)
| Country | Link |
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| CN (1) | CN206497275U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597735A (en) * | 2016-11-11 | 2017-04-26 | 广东晶科电子股份有限公司 | Direct-light type LED light bar and manufacturing method therefor |
| WO2019227647A1 (en) * | 2018-05-29 | 2019-12-05 | 武汉华星光电技术有限公司 | Backlight module, display device, and manufacturing method of backlight module |
| US10726772B2 (en) | 2018-05-29 | 2020-07-28 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display device, backlight module and manufacturing method thereof |
-
2016
- 2016-11-11 CN CN201621260754.1U patent/CN206497275U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597735A (en) * | 2016-11-11 | 2017-04-26 | 广东晶科电子股份有限公司 | Direct-light type LED light bar and manufacturing method therefor |
| WO2019227647A1 (en) * | 2018-05-29 | 2019-12-05 | 武汉华星光电技术有限公司 | Backlight module, display device, and manufacturing method of backlight module |
| US10726772B2 (en) | 2018-05-29 | 2020-07-28 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display device, backlight module and manufacturing method thereof |
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