CN107632456A - Side-edge type backlight based on blue red dual chip LED lamp bead - Google Patents
Side-edge type backlight based on blue red dual chip LED lamp bead Download PDFInfo
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- CN107632456A CN107632456A CN201710641945.5A CN201710641945A CN107632456A CN 107632456 A CN107632456 A CN 107632456A CN 201710641945 A CN201710641945 A CN 201710641945A CN 107632456 A CN107632456 A CN 107632456A
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Abstract
The invention discloses a kind of side-edge type backlight based on blue red dual chip LED lamp bead, using the high colour gamut LED lamp bead of blue chip, red light chips collocation green emitting phosphor, one part blue light excites green emitting phosphor, green glow caused by blue light, feux rouges and the excitated fluorescent powder sent afterwards by chip is compound to obtain high colour gamut LED side-edge type backlights, with higher colour gamut, colour gamut is up to 100% 120%, simultaneously, red light chips excitation is higher, and it need to only excite a kind of fluorescent material, it is easier to control the target capabilities of product；Using simpler than R, G, B three-color LED in blue, red dual chip collocation green emitting phosphor structure, it is easier to realize in technique；Compared to quantum dot film and quantum dot pipe, blue, red dual chip collocation green emitting phosphor is also equipped with the advantages such as stability is good, cost is low while superelevation colour gamut is realized.
Description
Technical field
The invention belongs to LED backlight technical field, is related to a kind of side-edge type backlight, is specifically that one kind is based on blue red twin-core
The side-edge type backlight of piece LED lamp bead.
Background technology
LED has small volume, long lifespan, good reliability, energy-conservation, green as a kind of emerging solid light source
The features such as, it is widely used in many High Efficiency Solid-State photon fields and daily life, such as illumination, backlight, letter
The fields such as number display, car light, large screen display lamp.
And as the fast development of LED backlight technology, consumer are cumulative to the demand day of the high color gamut displays of LED etc.
By force, it is desirable to which its color is more abundant, and stereovision is more preferable, color rendition Du Genggao.The method of main flow is to use blue chip at present
Yellow fluorescent powder is excited to realize white light LEDs, another kind realizes that the mainstream technology of the high colour gamut of LED television is to use blue-ray LED light
Source collocation quantum pipe, quantum film.
Red, green fluorescence powder or yellow fluorescent powder are mixed with packaging plastic either in conventional method, then point is coated in indigo plant
On optical chip, white light LEDs are compounded to form by photochromic, or the chip hybrid of R, G, B tri- is into white light, or quantum dot film, amount
Following various defects be present in son point Guan Jun：
1. commercial fluorescent material is mostly YAG powder or silicate fluorescent powder, Nitride phosphor, fluoride fluorescence at present
Powder, KSF fluorescent material, β-SiAlON, colour gamut are only capable of reaching 72%-93%；
2. the launching efficiency of fluorescent material is low, improving colour gamut can only be realized by increasing dosage, far can not be met current
Requirement of the society to more low energy consumption, more high energy efficiency and higher color domain, and the excitation of red fluorescence powder is not high, NTSC value
All the time 100% can not be broken through；
3. R, G, B three-color LED chip mixed light are difficult, and radiate there is also problem, while driving control system is more complicated；
4. the quanta point material of Current commercial is easy to be influenceed by temperature, humidity and causes to fail, simultaneously because quantum
Point preparation technology is complicated, yields poorly, stability is poor, and price is higher, fails to popularize completely.
The content of the invention
It is an object of the invention to provide a kind of side-edge type backlight based on blue red dual chip LED lamp bead, in blue light core
Red chip is added on the basis of piece to arrange in pairs or groups again green emitting phosphor, both can further lift the color gamut value of display field, again
Possess that stability is good, low cost and other advantages.
The purpose of the present invention can be achieved through the following technical solutions：
Based on the side-edge type backlight of blue red dual chip LED lamp bead, including metal backing and installed in metal backing bottom
Light guide plate on plate, reflector plate is provided between light guide plate and the metal backing bottom plate, liquid crystal surface is installed on the light guide plate
Plate, film is provided between the light guide plate and liquid crystal panel；
The light incident sides of the light guide plate are arranged with LED light bar in parallel, and the LED light bar is arranged on light guide plate and carried on the back with metal
Between plate side plate；
The LED light bar includes pcb board and the LED lamp bead being evenly distributed on pcb board；
The LED lamp bead includes lamp bead support and is distributed in blue chip, red light chips and green in lamp bead support
Fluorescent material, the green emitting phosphor are coated in lamp bead support with encapsulation glue mixing point.
Further, the excitation wavelength of the blue chip is 440nm-470nm, and the excitation wavelength of the red light chips is
600nm-650nm。
Further, the excitation wavelength of the green emitting phosphor is 500nm-545nm, and material is β-SiAlON and silicate
Fluorescent material.
Further, the material of the lamp bead support is shaped as square, long using one kind in ceramics, PCT, EMC, SMC
Bar shaped or circle, specification use 4010,4012,4014,7020 or 7016.
Further, the packing forms of the lamp bead support are combined using formal dress, whole upside-down mountings or formal dress upside-down mounting
Form.
Further, an at least blue chip and a red light chips are placed in the lamp bead support.
Further, connected in the lamp bead support between an at least blue chip and an at least red light chips, or
It is in parallel between person's blue chip string and red light chips string.
Further, in the lamp bead support an at least blue chip and an at least red light chips by least one electricity
Road powers.
Beneficial effects of the present invention：Side-edge type backlight provided by the invention based on blue red dual chip LED lamp bead, is used
The high colour gamut LED lamp bead of blue chip, red light chips collocation green emitting phosphor, one part blue light excite green emitting phosphor, it
Green glow caused by blue light, feux rouges and the excitated fluorescent powder sent afterwards by chip is compound to obtain high colour gamut LED side entrance backs
Source, there is higher colour gamut, colour gamut is up to 100%-120%, meanwhile, red light chips excitation is higher, and need to only excite a kind of glimmering
Light powder, it is easier to control the target capabilities of product；Using in blue, red dual chip collocation green emitting phosphor structure than R, G, B tri-
Color LED is simple, is easier to realize in technique；Compared to quantum dot film and quantum dot pipe, blue, red dual chip collocation green emitting phosphor exists
The advantages such as stability is good, cost is low are also equipped with while realizing superelevation colour gamut.
Brief description of the drawings
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the preparation method flow chart of LED light bar of the present invention.
Embodiment
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
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " perforate ", " on ", " under ", " thickness ", " top ", " in ",
Indicating position or the position relationship such as " length ", " interior ", " surrounding ", it is for only for ease of the description present invention and simplifies description, without
It is that the component of instruction or hint meaning or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.
As shown in figure 1, the invention provides a kind of side-edge type backlight based on blue red dual chip LED lamp bead, including gold
Belong to backboard 1 and the light guide plate 2 on the bottom plate of metal backing 1, reflection is provided between light guide plate 2 and the bottom plate of metal backing 1
Piece 3, liquid crystal panel 4 is installed on light guide plate 2, diaphragm 5 is provided between light guide plate 2 and liquid crystal panel 4.
The light incident sides of light guide plate 2 are arranged with LED light bar 6 in parallel, and LED light bar 6 is arranged on light guide plate 2 and metal backing 1
Between side plate.LED light bar 6 includes pcb board and the LED lamp bead that is evenly distributed on pcb board, LED lamp bead include lamp bead support with
And blue chip, red light chips and green emitting phosphor in lamp bead support are distributed in, green emitting phosphor and encapsulation glue mixing point
It is coated in lamp bead support.
Wherein, the excitation wavelength of blue chip is 440nm-470nm, and the excitation wavelength of red light chips is 600nm-650nm,
The excitation wavelength of green emitting phosphor is 500nm-545nm, and material is β-SiAlON and silicate fluorescent powder, the material of lamp bead support
Using one kind in ceramics, PCT, EMC, SMC, the shape of square, strip, circle or other Regularias is shaped as, specification can
Using 4010,4012,4014,7020 or 7016, the packing forms of LED lamp bead support use formal dress, whole upside-down mountings or formal dress
The form that upside-down mounting is combined.
Wherein, an at least blue chip and a red light chips can be placed in lamp bead support.
Wherein, connected in lamp bead support between an at least blue chip and an at least red light chips, or blue light core
It is in parallel between piece string and red light chips string.
Wherein, an at least blue chip and at least a red light chips are powered by least one circuit in lamp bead support.
During work, blue chip sends blue light, and red light chips send feux rouges, meanwhile, a part of indigo plant that blue chip is sent
Light excites green emitting phosphor, and the feux rouges and blue chip that blue light, the red light chips sent by blue chip are sent excite green
Green glow caused by color fluorescent material is compound to obtain high colour gamut LED lamp bead, LED lamp bead is arranged on pcb board LED light bar 6 is made, will
Backlight is made in the light incident sides that lamp bar is arranged on light guide plate 2, realizes that superelevation colour gamut is shown.
As shown in Fig. 2 in the present invention, the preparation method of LED light bar 6 comprises the following steps：
Step S1, blue chip and red light chips are arranged in lamp bead support in series, die bond bonding wire；
Step S2, green emitting phosphor and packaging plastic mixing point are coated in lamp bead support, baking-curing；
Step S3, the LED lamp bead being cured is attached on side entering type pcb board, crosses Reflow Soldering, obtain blue red dual chip collocation
The LED light bar 6 of green emitting phosphor.
Side-edge type backlight provided by the invention based on blue red dual chip LED lamp bead, using blue chip, red light chips
The high colour gamut LED lamp bead of collocation green emitting phosphor, one part blue light excite green emitting phosphor, the indigo plant sent afterwards by chip
Light, feux rouges and green glow caused by excitated fluorescent powder is compound obtains high colour gamut LED side-edge type backlights, have higher colour gamut, color
Domain is up to 100%-120%, meanwhile, red light chips excitation is higher, and need to only excite a kind of fluorescent material, it is easier to controls product
Target capabilities；Using, technique in relatively appearance simpler than R, G, B three-color LED in blue, red dual chip collocation green emitting phosphor structure
Easily realize；Compared to quantum dot film and quantum dot pipe, blue, red dual chip collocation green emitting phosphor is gone back while superelevation colour gamut is realized
Possess the advantages such as stability is good, cost is low.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example describe
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can close in any one or more embodiments or example
Suitable mode combines.
Above content is only to structure example of the present invention and explanation, affiliated those skilled in the art couple
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from invention
Structure surmounts scope defined in the claims, all should belong to protection scope of the present invention.
Claims (8)
1. the side-edge type backlight based on blue red dual chip LED lamp bead, it is characterised in that：Including metal backing (1) and installation
Light guide plate (2) on metal backing (1) bottom plate, reflector plate is provided between the light guide plate (2) and metal backing (1) bottom plate
(3) liquid crystal panel (4), is installed on the light guide plate (2), film (5) is provided between the light guide plate (2) and liquid crystal panel (4)；
The light incident sides of the light guide plate (2) are arranged with LED light bar (6) in parallel, and the LED light bar (6) is arranged on light guide plate (2)
Between metal backing (1) side plate；
The LED light bar (6) includes pcb board and the LED lamp bead being evenly distributed on pcb board；
The LED lamp bead includes lamp bead support and is distributed in blue chip, red light chips and green fluorescence in lamp bead support
Powder, the green emitting phosphor are coated in lamp bead support with encapsulation glue mixing point.
2. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
The excitation wavelength of blue chip is 440nm-470nm, and the excitation wavelength of the red light chips is 600nm-650nm.
3. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
The excitation wavelength of green emitting phosphor is 500nm-545nm, and material is β-SiAlON and silicate fluorescent powder.
4. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
The material of lamp bead support is shaped as square, strip or circle, specification uses using one kind in ceramics, PCT, EMC, SMC
4010th, 4012,4014,7020 or 7016.
5. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
The packing forms of lamp bead support use the form that formal dress, whole upside-down mountings or formal dress upside-down mounting are combined.
6. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
An at least blue chip and a red light chips are placed in lamp bead support.
7. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
Connected in lamp bead support between an at least blue chip and an at least red light chips, or blue chip string and red light chips
It is in parallel between string.
8. the side-edge type backlight according to claim 1 based on blue red dual chip LED lamp bead, it is characterised in that：It is described
An at least blue chip and at least a red light chips are powered by least one circuit in lamp bead support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641945.5A CN107632456A (en) | 2017-07-31 | 2017-07-31 | Side-edge type backlight based on blue red dual chip LED lamp bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641945.5A CN107632456A (en) | 2017-07-31 | 2017-07-31 | Side-edge type backlight based on blue red dual chip LED lamp bead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107632456A true CN107632456A (en) | 2018-01-26 |
Family
ID=61099110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710641945.5A Pending CN107632456A (en) | 2017-07-31 | 2017-07-31 | Side-edge type backlight based on blue red dual chip LED lamp bead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107632456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681153A (en) * | 2018-07-27 | 2018-10-19 | 厦门天马微电子有限公司 | A kind of display device and its driving method |
| CN111948853A (en) * | 2020-08-20 | 2020-11-17 | 安徽芯瑞达科技股份有限公司 | Side-in high color gamut LED module for backlight field |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731726Y (en) * | 2004-09-05 | 2005-10-05 | 王亚盛 | Novel large power packing header of LED |
| TW200833998A (en) * | 2006-08-25 | 2008-08-16 | Samsung Electro Mech | White light emitting diode module |
| CN104409604A (en) * | 2014-12-01 | 2015-03-11 | 深圳市晶台股份有限公司 | Manufacturing method and packaging application of novel LED bracket |
| CN206059391U (en) * | 2016-10-08 | 2017-03-29 | 深圳市佑明光电有限公司 | A kind of LED package and white light LEDs point source |
| CN206349351U (en) * | 2016-12-20 | 2017-07-21 | 广州硅能照明有限公司 | High-performance upside-down mounting COB encapsulating structures |
-
2017
- 2017-07-31 CN CN201710641945.5A patent/CN107632456A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731726Y (en) * | 2004-09-05 | 2005-10-05 | 王亚盛 | Novel large power packing header of LED |
| TW200833998A (en) * | 2006-08-25 | 2008-08-16 | Samsung Electro Mech | White light emitting diode module |
| CN104409604A (en) * | 2014-12-01 | 2015-03-11 | 深圳市晶台股份有限公司 | Manufacturing method and packaging application of novel LED bracket |
| CN206059391U (en) * | 2016-10-08 | 2017-03-29 | 深圳市佑明光电有限公司 | A kind of LED package and white light LEDs point source |
| CN206349351U (en) * | 2016-12-20 | 2017-07-21 | 广州硅能照明有限公司 | High-performance upside-down mounting COB encapsulating structures |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681153A (en) * | 2018-07-27 | 2018-10-19 | 厦门天马微电子有限公司 | A kind of display device and its driving method |
| CN108681153B (en) * | 2018-07-27 | 2021-01-05 | 厦门天马微电子有限公司 | Display device and driving method thereof |
| CN111948853A (en) * | 2020-08-20 | 2020-11-17 | 安徽芯瑞达科技股份有限公司 | Side-in high color gamut LED module for backlight field |
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| PB01 | Publication | ||
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Application publication date: 20180126 |