CN107816665A - A kind of bluish-green LED backlight module of high colour gamut and preparation method thereof - Google Patents
A kind of bluish-green LED backlight module of high colour gamut and preparation method thereof Download PDFInfo
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- CN107816665A CN107816665A CN201711065839.3A CN201711065839A CN107816665A CN 107816665 A CN107816665 A CN 107816665A CN 201711065839 A CN201711065839 A CN 201711065839A CN 107816665 A CN107816665 A CN 107816665A
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- led lamp
- lamp bead
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- guide plate
- light guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
- F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
- F21Y2113/17—Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
Abstract
The present invention discloses bluish-green LED backlight module of a kind of high colour gamut and preparation method thereof, and backlight module includes blue red LED lamp bead, green light LED lamp bead, pcb board, metal backing, reflecting paper, lower light guide plate, upper light guide plate, diaphragm, OPEN CELL；The pcb board is rectangular strip circuit board, is welded with two row's LED lamp beads thereon；The red LED lamp bead of the indigo plant, the green light LED lamp bead are located at two rows respectively；Pcb board side is provided perpendicular to the PCB solder joints of four stripe shapes of short side；The pcb board back side is affixed on the inside of the short side of the metal backing of L-type, and metal backing long side internal layer is placed with reflecting paper, and lower light guide plate, upper light guide plate, diaphragm, OPEN CELL have been sequentially placed above reflecting paper.While present invention lifting color gamut value, solve blue chip and the uneven technical problem of red light chips mixed light, furthermore, it is possible to increase the upper collector lens provided with upper and lower reflecting layer, lower collector lens, red blue and green light is entered before lower light guide plate, upper light guide plate, mixed light does not disturb.
Description
Technical field
The present invention relates to LED backlight field, specially a kind of bluish-green LED backlight module of high colour gamut and preparation method thereof.
Background technology
LED has the spies such as small volume, long lifespan, good reliability, energy-conserving and environment-protective as a kind of emerging solid light source
Point, in illumination and display field extensive use, and with the fast development of LED backlight technology, consumer is to the high color of LED television
The demand in domain etc. increasingly strengthens, it is desirable to which its color is more abundant, and stereovision is more preferable, color rendition Du Genggao.Main flow at present
Method be excitated red and green emitting phosphor, colour gamut highest are only capable of reaching 90%-93% using blue chip.Green glow chip ratio
Existing green emitting phosphor has the wide and shorter wavelength of narrower half-wave.In addition, fluorescent material launching efficiency is low, to expect high color
The white light in domain, the concentration of fluorescent material must be increased, this undoubtedly can be improved the increase of packaging industry cost, fraction defective, and another kind is realized
The mainstream technology of the high colour gamut of LED television is to use blue light LED light source collocation quantum pipe, quantum film, but quanta point material is in itself
Have that thermostabilization difference, poisonous, cost be high and the critical defects such as quantum dot pipe is easily broken in use.
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 red, green, blue three is into white light, or quantum dot film,
Following various defects be present in quantum dot Guan Jun：Fluorescent material commercial at present is mostly YAG powder or silicate, nitride fluorescent first
Powder, KSF fluorescent material, β-SiAlON, colour gamut are only capable of reaching 72%-93%；The launching efficiency of fluorescent material is low, and improving colour gamut can only lead to
Increase dosage is crossed to realize, requirement of the today's society to more low energy consumption, more high energy efficiency and higher color domain far can not be met；
Red, green, blue three-color LED chip mixed light is difficult, and radiates there is also problem, while driving control system is more complicated；Current commercial
Quanta point material be easy to be influenceed by temperature, humidity and cause to fail, simultaneously because quantum dot preparation technology is complicated, yield
Low, stability is poor, and price is higher, fails to popularize completely.
Application publication number CN 201710537225.4 discloses a kind of high colour gamut of bluish-green dual chip collocation red fluorescence powder
LED lamp bead and its backlight, wherein producing a kind of bluish-green dual-colored LED lamp bead, LED lamp bead is distributed blue in the inside of LED support
Optical chip and green glow chip, blue chip and green glow chip by being mutually mixed between red fluorescence powder and packaging plastic and toast
Solidify post package and be evenly distributed on side entering type pcb board in the inside of the LED support, formation LED lamp bead, multiple lamp bead bodies
On, then side entrance back module is fabricated to, using short-wave band and the wide green glow chip of narrow half-wave, making up green emitting phosphor can not reach
High colour gamut effect.
The wide green glow chip of introducing short-wave band and narrow half-wave of above-mentioned existing scheme, the colour gamut that backlight is shown effectively is lifted, but
Because side entering type LED lamp bead is elongated, the blue light that blue chip is sent, the feux rouges and green glow that blue light excitated red fluorescent powder is sent
First mixed light of the green glow that chip is sent in LED lamp bead, the secondary mixed light in edge-type light guide plate, still it can not mix
It is even, cause the light source of backlight module nearby light guide plate occur obvious mottlrd figure (that is, red green three coloured light is unmixed uniformly caused by
Polychromatic light band).For overcome the deficiencies in the prior art, a kind of scheme is now provided.
The content of the invention
It is an object of the invention to customer service the deficiencies in the prior art, there is provided a kind of bluish-green LED backlight module of high colour gamut and
Its preparation method, while lifting color gamut value, solve blue chip and the uneven technical problem of red light chips mixed light.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of bluish-green LED backlight module of high colour gamut, including blue red LED lamp bead, green light LED lamp bead, pcb board, metal backing,
Reflecting paper, lower light guide plate, upper light guide plate, diaphragm, OPEN CELL；
The pcb board is rectangular strip circuit board, is welded with two row's LED lamp beads thereon；It is the red LED lamp bead of the indigo plant, described
Green light LED lamp bead is located at two rows respectively；Pcb board side is provided perpendicular to the PCB solder joints of four stripe shapes of short side；It is described
The pcb board back side is affixed on the inside of the short side of the metal backing of L-type, and metal backing long side internal layer is placed with reflecting paper, reflecting paper top
It has been sequentially placed lower light guide plate, upper light guide plate, diaphragm, OPEN CELL；
The LED lamp bead includes support, LED chip, gold thread, encapsulation glue, informal voucher, small pad, big pad；Its medium-height trestle
For the inclined rectangular channel of madial wall；One section of informal voucher is inlayed among frame bottom, informal voucher both sides are respectively arranged with through frame bottom
Small pad, big pad；Small pad, big pad stretch out from frame bottom both sides respectively；LED core is fixed with the inside of frame bottom
Piece, LED chip top left and right are provided with P electrode and N electrode, and P electrode and N electrode are connected to the small weldering of bottom by gold thread respectively
Disk, big pad；Filled with encapsulation glue in bracket groove；
The pcb board is internally provided with two rows series circuit, and upper row is blue red LED lamp bead series circuit, Lan Hong LED
Lamp bead series circuit both ends are connected on two PCB solder joints, and lower row is green light LED lamp bead series circuit, green light LED lamp bead string
Connection circuit both ends are connected on two other described PCB solder joint；The PCB solder joints of two PCB circuits are connected with wire respectively
Two control power supplys；
Increase corresponds to blue red LED lamp bead, the upper optically focused of green light LED lamp bead respectively on the left of the lower light guide plate, upper light guide plate
Lens, lower collector lens；Upper collector lens, lower collector lens upper and lower surface are respectively arranged with collector lens reflecting layer, lower poly-
Optical lens reflecting layer；
Lamp bead is substituted for flip LED lamp bead in the red LED lamp bead of the indigo plant, green light LED lamp bead, i.e. LED flip chip is taken
With upside-down mounting support；
The excitation wavelength of the blue chip is 440nm-470nm, and the wavelength of the green glow chip is 500nm-545nm,
The red fluorescence powder excitation wavelength is 620nm-650nm, and red fluorescence powder material is Nitride phosphor, fluoride fluorescence
One or more in powder, KSF fluorescent material or silicate fluorescent powder；
Material in the support is made up of the one or more in ceramics, PCT, EMC, SMC, and the dimensions of support is
4010th, one kind in 4014,7020,7016；
One or more LED chips are provided with the red LED lamp bead of the indigo plant, green light LED lamp bead；
A kind of preparation method of the bluish-green LED backlight module of high colour gamut：
Step 1: prepared by LED lamp bead：The blue chip die bond is connected respectively to frame bottom, blue chip by gold thread
P electrode, N electrode and small pad, big pad are connect, the encapsulation glue of red fluorescence powder mixing, baking-curing are added into bracket groove
Glue is encapsulated, forms blue red LED lamp bead；The green glow chip die bond connects P respectively to frame bottom, green glow chip by gold thread
Electrode, N electrode and small pad, big pad, encapsulation glue is added into bracket groove, baking-curing encapsulation glue, forms green light LED
Lamp bead；
Step 2: prepared by two-path circuit plate：Blue red LED lamp bead, green light LED lamp bead are divided by tin cream on the pcb board
It is not welded in pcb board two rows admittedly；Four wires on four PCB solder joints, and connect two control power supplys；
Step 3: backlight module assembles：The pcb board back is affixed on by gum on the inside of the L-type short slab of metal backing, gold
Category backboard L-type, which is grown, is sequentially placed lower light guide plate, upper light guide plate, diaphragm, OPEN CELL in version.
The invention provides a kind of high bluish-green LED backlight module of colour gamut and preparation method thereof, while lifting color gamut value, solution
Determine blue chip and the uneven technical problem of red light chips mixed light, in addition, the upper collector lens of increase, lower collector lens, and
Reflecting layer is set in upper and lower lens face, red blue and green light is entered before lower light guide plate, upper light guide plate, mixed light does not disturb, and avoids
Nearby there is obvious mottlrd figure to the bluish-green high colour gamut backlight mould light source of tradition in light guide plate.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is a kind of high bluish-green LED backlight modular structure schematic diagram of colour gamut of the present invention；
Fig. 2 is a kind of LED lamp bead structural representation of the high bluish-green LED backlight module of colour gamut of the present invention；
Fig. 3 is a kind of light-source structure schematic diagram of the high bluish-green LED backlight module of colour gamut of the present invention；
Fig. 4 is the back light module unit structure schematic diagram that a kind of high bluish-green LED backlight module of colour gamut of the present invention increases collector lens；
Fig. 5 is a kind of preparation method flow chart of the high bluish-green LED backlight module of colour gamut of the present invention.
Embodiment
The purpose of the present invention can be achieved through the following technical solutions：
A kind of bluish-green LED backlight module of high colour gamut, referring to Fig. 1-4, including blue red LED lamp bead 11, green light LED lamp bead 12,
Pcb board 2, metal backing 3, reflecting paper 4, lower light guide plate 5, upper light guide plate 6, diaphragm 7, OPEN CELL 8；
The pcb board 2 is rectangular strip circuit board, is welded with two row's LED lamp beads thereon；The red LED lamp bead 11 of the indigo plant, institute
State green light LED lamp bead 12 and be located at two rows respectively；The side of pcb board 2 is provided perpendicular to the PCB solder joints of four stripe shapes of short side
21；The back side of pcb board 2 is affixed on the inside of the short side of the metal backing 3 of L-type, and the long side internal layer of metal backing 3 is placed with reflecting paper 4,
The top of reflecting paper 4 has been sequentially placed lower light guide plate 5, upper light guide plate 6, diaphragm 7, OPEN CELL 8；
The LED lamp bead includes support 101, LED chip 102, gold thread 103, encapsulation glue 104, informal voucher 105, small pad
106th, big pad 107；Its medium-height trestle 101 is the inclined rectangular channel of madial wall；One section of informal voucher 105 is inlayed among the bottom of support 101,
The both sides of informal voucher 105 are respectively arranged with the small pad 106 through frame bottom, big pad 107；Small pad 106, big pad 107 divide
Do not stretched out from the two bottom sides of support 101；The bottom inside of support 101 is fixed with LED chip 102, and the top of LED chip 102 left and right is set
P electrode and N electrode are equipped with, P electrode and N electrode are connected to small pad 106, the big pad 107 of bottom by gold thread 103 respectively；
Filled with encapsulation glue 104 in the groove of support 101；
The pcb board 2 is internally provided with two rows series circuit, and upper row is the blue red series circuit of LED lamp bead 11, Lan Hong
The series circuit both ends of LED lamp bead 11 are connected on two PCB solder joints 21, and lower row is the series circuit of green light LED lamp bead 12, green glow
The series circuit both ends of LED lamp bead 12 are connected on two other described PCB solder joint 21；The PCB solder joints 21 of two PCB circuits
Respectively two control power supplys are connected with wire；
The red series circuit of LED lamp bead 11 of the indigo plant, the series circuit of green light LED lamp bead 12 can be exchanged mutually, be arranged in formation
The series circuit of green light LED lamp bead 12, the blue red series circuit of LED lamp bead 11 of lower row；
The lower light guide plate 5, the left side of upper light guide plate 6 can increase corresponding blue red LED lamp bead 11, green light LED lamp bead respectively
12 upper collector lens 13, lower collector lens 14；Upper collector lens 13, the upper and lower surface of lower collector lens 14 are respectively arranged with poly-
Optical lens reflecting layer 131, lower collector lens reflecting layer 141；Upper collector lens 13, lower collector lens 14 are more preferably by blue red LED
Blue feux rouges, the green glow that pearl 11, green light LED lamp bead 12 are sent are converged in lower light guide plate 5, upper light guide plate 6, and upper collector lens is anti-
Penetrate the setting of layer 131, lower collector lens reflecting layer 141, avoid red blue light and green glow under entrance light guide plate 5, on before light guide plate 6
Mutual mixed light interference；
Lamp bead can be substituted for flip LED lamp bead in the red LED lamp bead 11 of the indigo plant, green light LED lamp bead 12, i.e. LED falls
Cartridge chip collocation upside-down mounting support；
The excitation wavelength of the blue chip is 440nm-470nm, and the wavelength of the green glow chip is 500nm-545nm,
The red fluorescence powder excitation wavelength is 620nm-650nm, and red fluorescence powder material is Nitride phosphor, fluoride fluorescence
One or more in powder, KSF fluorescent material or silicate fluorescent powder；
Material in the support 101 is made up of the one or more in ceramics, PCT, EMC, SMC, the size of support 101
Specification can be one kind in 4010,4014,7020,7016；
One or more LED chips 102 are provided with the red LED lamp bead 11 of the indigo plant, green light LED lamp bead 12；
A kind of as shown in figure 5, preparation method of the bluish-green LED backlight module of high colour gamut：
Step 1: prepared by LED lamp bead：The blue chip die bond passes through gold thread 103 to the bottom of support 101, blue chip
P electrode, N electrode and small pad 106, big pad 107 are connected respectively, and the envelope of red fluorescence powder mixing is added into the groove of support 101
Glue 104 is filled, baking-curing encapsulation glue 104, forms blue red LED lamp bead 11；The green glow chip die bond is to the bottom of support 101
Portion, green glow chip connect P electrode, N electrode and small pad 106, big pad 107 respectively by gold thread 103, into the groove of support 101
Encapsulation glue 104 is added, baking-curing encapsulation glue 104, forms green light LED lamp bead 12；
Step 2: prepared by two-path circuit plate：By tin cream by blue red LED lamp bead 11, green light LED lamp bead on the pcb board 2
12 are welded in the two rows of pcb board 2 admittedly respectively；Four wires on four PCB solder joints 21, and connect two control power supplys；
Step 3: backlight module assembles：The back of pcb board 2 is affixed on by gum on the inside of the L-type short slab of metal backing 3,
Metal backing 3L types, which are grown, is sequentially placed lower light guide plate 5, upper light guide plate 6, diaphragm 7, OPEN CELL 8 in version.
Operation principle：The pcb board 2 passes through two control power supplys, the blue red LED lamp bead 11 of independent control, green light LED lamp bead
12 luminous intensity；Blue red LED lamp bead 11 sends red blue light, and red blue light enters in upper light guide plate 6, and green light LED lamp bead 12 is sent
Green glow, green glow enter in lower light guide plate 5；Green glow is after the refraction of reflection paper upper surface in lower light guide plate 5, by lower light guide plate 5
Upper surface passes, into upper light guide plate 6；After red blue light in upper light guide plate 6 and the green glow mixing entered from lower light guide plate 5,
Passed from upper light guide plate 6；By diaphragm 7, mixed light, last mixed light shine on OPEN CELL 8 mixed light again.
The invention provides a kind of high bluish-green LED backlight module of colour gamut and preparation method thereof, while lifting color gamut value, solution
Determine blue chip and the uneven technical problem of red light chips mixed light, furthermore, it is possible to which it is saturating to increase upper collector lens, lower optically focused
Mirror, and reflecting layer is set in upper and lower lens face, red blue and green light is entered before lower light guide plate, upper light guide plate, mixed light does not disturb,
Avoiding the bluish-green high colour gamut backlight mould light source of tradition, nearby there is obvious mottlrd figure in light guide plate.
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 (9)
1. a kind of bluish-green LED backlight module of high colour gamut, including blue red LED lamp bead (11), green light LED lamp bead (12), pcb board (2),
Metal backing (3), reflecting paper (4), lower light guide plate (5), upper light guide plate (6), diaphragm (7), OPEN CELL (8), its feature exist
In：
The pcb board (2) is rectangular strip circuit board, is welded with two row's LED lamp beads thereon；The red LED lamp bead of indigo plant (11), institute
State green light LED lamp bead (12) and be located at two rows respectively；Pcb board (2) side is provided perpendicular to the PCB welderings of four stripe shapes of short side
Point (21)；Pcb board (2) back side is affixed on the inside of the short side of the metal backing (3) of L-type, and metal backing (3) long side internal layer is placed
There is reflecting paper (4), lower light guide plate (5), upper light guide plate (6), diaphragm (7), OPEN CELL have been sequentially placed above reflecting paper (4)
(8)。
2. a kind of high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that the LED lamp bead includes
Support (101), LED chip (102), gold thread (103), encapsulation glue (104), informal voucher (105), small pad (106), big pad
(107)；Its medium-height trestle (101) is the inclined rectangular channel of madial wall；One section of informal voucher (105) is inlayed among support (101) bottom, in vain
Bar (105) both sides are respectively arranged with the small pad (106) through frame bottom, big pad (107)；Small pad (106), big pad
(107) stretched out respectively from support (101) two bottom sides；Support (101) bottom inside is fixed with LED chip (102), LED chip
(102) top left and right is provided with P electrode and N electrode, and P electrode and N electrode are connected to the small weldering of bottom by gold thread (103) respectively
Disk (106), big pad (107)；Filled with encapsulation glue (104) in support (101) groove.
3. a kind of high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that in the pcb board (2)
Portion is provided with two rows series circuit, and upper row is blue red LED lamp bead (11) series circuit, blue red LED lamp bead (11) series electrical
Road both ends are connected on two PCB solder joints (21), and lower row is green light LED lamp bead (12) series circuit, green light LED lamp bead (12)
Series circuit both ends are connected on two other described PCB solder joint (21)；The PCB solder joints (21) of two PCB circuits are respectively
Two control power supplys are connected with wire.
A kind of 4. high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that the lower light guide plate
(5), increase corresponds to blue red LED lamp bead (11), the upper collector lens of green light LED lamp bead (12) respectively on the left of upper light guide plate (6)
(13), lower collector lens (14)；Upper collector lens (13), lower collector lens (14) upper and lower surface are respectively arranged with collector lens
Reflecting layer (131), lower collector lens reflecting layer (141).
A kind of 5. high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that the red LED lamp bead of indigo plant
(11) lamp bead, is substituted for flip LED lamp bead, i.e. LED flip chip collocation upside-down mounting support in green light LED lamp bead (12).
6. a kind of high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that the blue chip
Excitation wavelength is 440nm-470nm, and the wavelength of the green glow chip is 500nm-545nm, the red fluorescence powder excitation wavelength
For 620nm-650nm, red fluorescence powder material is Nitride phosphor, fluorination matter fluorescent powder, KSF fluorescent material or silicate fluorescent
One or more in powder.
7. a kind of high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that in the support (101)
Material be made up of the one or more in ceramics, PCT, EMC, SMC, the dimensions of support (101) is 4010,4014,
7020th, one kind in 7016.
A kind of 8. high bluish-green LED backlight module of colour gamut according to claim 1, it is characterised in that the red LED lamp bead of indigo plant
(11) one or more LED chips (102), are provided with green light LED lamp bead (12).
9. a kind of preparation method of the bluish-green LED backlight module of high colour gamut, it is characterised in that this method comprises the following steps：
Step 1: prepared by LED lamp bead：The blue chip die bond passes through gold thread (103) to support (101) bottom, blue chip
P electrode, N electrode and small pad (106), big pad (107) are connected respectively, are mixed to the interior red fluorescence powder that adds of support (101) groove
The encapsulation glue (104) of conjunction, baking-curing encapsulation glue (104), form blue red LED lamp bead (11)；The green glow chip die bond
To support (101) bottom, green glow chip connects P electrode, N electrode and small pad (106), big pad respectively by gold thread (103)
(107) encapsulation glue (104), is added into support (101) groove, baking-curing encapsulation glue (104), forms green light LED lamp bead
(12)；
Step 2: prepared by two-path circuit plate：By tin cream by blue red LED lamp bead (11), green light LED lamp bead on the pcb board (2)
(12) pcb board (2) two rows are welded in admittedly respectively；Four upper four wires of PCB solder joints (21), and connect two control electricity
Source；
Step 3: backlight module assembles：Pcb board (2) back is affixed on by gum on the inside of the L-type short slab of metal backing (3),
Metal backing (3) L-type, which is grown, is sequentially placed lower light guide plate (5), upper light guide plate (6), diaphragm (7), OPEN CELL (8) in version.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065839.3A CN107816665B (en) | 2017-11-02 | 2017-11-02 | High-color-gamut blue-green LED backlight module and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065839.3A CN107816665B (en) | 2017-11-02 | 2017-11-02 | High-color-gamut blue-green LED backlight module and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107816665A true CN107816665A (en) | 2018-03-20 |
| CN107816665B CN107816665B (en) | 2020-01-07 |
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|---|---|---|---|
| CN201711065839.3A Active CN107816665B (en) | 2017-11-02 | 2017-11-02 | High-color-gamut blue-green LED backlight module and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107816665B (en) | 2020-01-07 |
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