CN206209253U - A kind of area source lamp bar, direct-light-type backlight and liquid crystal display module - Google Patents
A kind of area source lamp bar, direct-light-type backlight and liquid crystal display module Download PDFInfo
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- CN206209253U CN206209253U CN201621329650.1U CN201621329650U CN206209253U CN 206209253 U CN206209253 U CN 206209253U CN 201621329650 U CN201621329650 U CN 201621329650U CN 206209253 U CN206209253 U CN 206209253U
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Abstract
The utility model discloses a kind of area source lamp bar, direct-light-type backlight and liquid crystal display module.The area source lamp bar includes some LED chips/LED chip group, LED-baseplate and the light conversion film/transparent mulch film that are set in array, some LED chips/LED chip the group is encapsulated in the LED-baseplate, and the light conversion film/transparent mulch film is covered in some LED chips/LED chip group and LED-baseplate.The area source lamp strip adoption is directly encapsulated into LED-baseplate in LED chip/LED chip group that array is set, metal binding line, housing without existing main flow list LED lamp finished product etc., reliability is higher, die sinking accessory is few, advantageously reduce production cost, and the area of the LED-baseplate is big, is conducive to the radiating of direct-light-type backlight.
Description
Technical field
The utility model is related to field of backlights, more particularly to a kind of area source lamp bar, direct-light-type backlight and liquid crystal display
Module.
Background technology
The backlighting requirements brightness of vehicle-mounted HUD products is high, brightness range from tens of thousands of to hundreds of thousands, far beyond current TFT
Color screen backlight it is thousands of to 10,000 or so scope, conventional side entering-type LED backlight source is small due to lamp bar, it is impossible to meet vehicle-mounted
The brightness requirement of HUD products, can only use direct LED backlight.At present, direct-light-type backlight uses the point light of individual packages
Source LED, it is, high-power in being typically employed to by each single LED final package in the circuit board, and in order to lift brightness
LED and large number of, amount of localized heat aggregation is serious, and the heat that highlighted LED is produced is difficult to effectively distribute, influence product reliability
And the life-span；And, the spot light LED of each individual packages has the parts such as metal binding line, housing, and die sinking accessory is more, into
This is also higher.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of area source lamp bar, direct-light-type backlight
And liquid crystal display module.The area source lamp strip adoption is directly encapsulated into LED-baseplate in LED chip/LED chip group that array is set
On, metal binding line, housing without existing main flow list LED lamp finished product etc., reliability is higher, and die sinking accessory is few, is conducive to
Production cost is reduced, and the area of the LED-baseplate is big, is conducive to the radiating of direct-light-type backlight.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of area source lamp bar, including some LED chips/LED chip group, LED-baseplate and the light that are set in array are changed
Film, some LED chips/LED chip group is encapsulated in the LED-baseplate, and the light conversion film is covered in some LED
In chip/LED chip group and LED-baseplate.
Further, the LED chip is the one kind in red bluish-green LED chip, is included in the light conversion film and institute
State fluorescent material and/or quantum dot that LED chip is complementarily shaped to white light.
Further, the LED chip group is the combination of any two kinds in red bluish-green LED chip, the light conversion film
Inside include the fluorescent material or quantum dot that white light is complementarily shaped to the LED chip.
A kind of area source lamp bar, including some LED chip groups, LED-baseplate and the transparent mulch film set in array, it is described
Some LED chip groups are encapsulated in the LED-baseplate, and the transparent mulch film is covered in some LED chip groups and LED bases
On plate；Wherein, the LED chip group is the combination of red bluish-green LED chip.
A kind of direct-light-type backlight, including glue frame, be arranged on the glue frame bottom wiring board, be arranged on the circuit
Plate is close to the above-mentioned area source lamp bar of glue frame side, is arranged on heat-radiating substrate of the wiring board away from glue frame side.
Further, the periphery of the glue frame is provided with metal frame, and the cross section of the metal frame is L-shaped, the circuit
Plate is pasted on the bottom surface of the metal frame.
A kind of direct-light-type backlight, including metal frame, be arranged on the metal frame bottom wiring board, be arranged on it is described
Wiring board is close to the above-mentioned area source lamp bar of metal frame side, is arranged on radiating base of the wiring board away from metal frame side
Plate.
Further, some pit-holes are formed with a metal frame at least side.
Further, some pit-holes mutually stagger.
A kind of liquid crystal display module, including above-mentioned direct-light-type backlight.
The utility model has the advantages that：LED chip/LED core that the area source lamp strip adoption is set in array
Piece group is directly encapsulated into LED-baseplate, metal binding line, housing without existing main flow list LED lamp finished product etc., and reliability is more
Height, die sinking accessory is few, advantageously reduces production cost, and the area of the LED-baseplate is big, is conducive to direct-light-type backlight
Radiating.
Brief description of the drawings
The front schematic view of the area source lamp bar that Fig. 1 is provided for the utility model；
Fig. 2 is the A-A profiles of the area source lamp bar shown in Fig. 1；
The schematic diagram of the direct-light-type backlight that Fig. 3 is provided for the utility model；
The schematic diagram of another direct-light-type backlight that Fig. 4 is provided for the utility model；
Fig. 5 is the side schematic diagram of the direct-light-type backlight shown in Fig. 4；
The schematic diagram of the another direct-light-type backlight that Fig. 6 is provided for the utility model；
Fig. 7 is the side schematic diagram of the direct-light-type backlight shown in Fig. 6.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
Embodiment one
As illustrated in fig. 1 and 2, a kind of area source lamp bar 1, including some LED chips 11, the LED-baseplate 12 set in array
With light conversion film 13, some LED chips 11 are encapsulated in the LED-baseplate 12, and the light conversion film 13 is covered in described
On some LED chips 11 and LED-baseplate 12；Wherein, the LED chip 11 is the one kind in red bluish-green LED chip, and the light turns
Change in film 13 and include the fluorescent material and/or quantum dot that white light is complementarily shaped to the LED chip 11.
Such as, the LED chip 11 is blue-light LED chip, then include yellow fluorescent material in the light conversion film 13, is realized
Common white light in existing backlight, or, red green quantum dot is also mixed with the light conversion film 13, to improve the color of white light
Thresholding, realizes colour gamut white light high；Or, the light conversion film 13 can be by the way of red green quantum dot mixes, not making directly
Yellow fluorescent material, the blue-light LED chip is used directly to excite red green quantum dot, realize the white light in higher color domain.Similarly, the LED
Chip 11 is red LED chip, and the light conversion film 13 can use blue phosphor+green fluorescence powder or blue phosphor+green quantum
Point or blue quantum dot+green fluorescence powder or blue quantum dot+green quantum dot；The LED chip 11 is green LED chip, the light
Conversion film 13 can using red fluorescent material+blue phosphor or red fluorescent material+indigo plant quantum dot or red quantum dot+blue phosphor or
Red quantum dot+indigo plant quantum dot.
The light conversion film 13 can be covered on the LED chip 11 and LED-baseplate 12 by heat pressing process, it is also possible to
Pasted on the LED chip 11 and LED-baseplate 12 by way of pasting.
The area source lamp bar 1 does not use whole LED lamp finished product, but LED chip 11 directly is encapsulated in into LED-baseplate 12
On, all LED chips 11 share one layer of light conversion film 13, metal binding line, housing without existing main flow list LED lamp finished product
Deng accessory, low cost is molded, the connection line between the LED chip 11 is arranged in LED-baseplate 12, and reliability is higher, and
And the area of the LED-baseplate 12 is big, is conducive to radiating；Preferably, the light conversion film 13 uses fluorescent material and quantum dot material
Material mixing, can improve the color gamut value of white light, and optimally, the light conversion film 13, can be with maximum journey only with quanta point material
Improve the color gamut value of white light in degree ground.
Embodiment two
As illustrated in fig. 1 and 2, a kind of area source lamp bar 1, including some LED chip groups 11, LED-baseplate set in array
12 and light conversion film 13, some LED chip groups 11 are encapsulated in the LED-baseplate 12, and the light conversion film 13 is covered in
In some LED chip groups 11 and LED-baseplate 12；Wherein, the LED chip group 11 is any in red bluish-green LED chip
The fluorescent material or amount that white light is complementarily shaped to the LED chip group 11 are included in two kinds of combination, the light conversion film 13
Sub- point.
Such as, the LED chip group 11 is the combination of blue-light LED chip+green LED chip, then the light conversion film 13
Red fluorescent material is inside included, white light is realized, or, red quantum dot is included in the light conversion film 13, realize colour gamut white light high.
Similarly, the LED chip group 11 is the combination of red LED chip+blue-light LED chip, and the light conversion film 13 can use green
Fluorescent material or green quantum dot；The LED chip group 11 is the combination of green LED chip+red LED chip, the light conversion
Film 13 can be using blue phosphor or blue quantum dot.
The light conversion film 13 can be covered in the LED chip group 11 and LED-baseplate 12 by heat pressing process, also may be used
Pasted in the LED groups chip 11 and LED-baseplate 12 with by way of pasting.
The area source lamp bar 1 does not use whole LED lamp finished product, but LED chip group 11 directly is encapsulated in into LED-baseplate
On 12, all LED chip groups 11 share one layer of light conversion film 13, the metal binding line without existing main flow list LED lamp finished product,
The accessories such as housing, mold low cost, and the connection line between the LED chip group 11 is arranged in LED-baseplate 12, and reliability is more
Height, and the area of the LED-baseplate 12 is big, is conducive to radiating；Preferably, the light conversion film 13 uses quanta point material,
The color gamut value of white light can be improved.
Embodiment three
As illustrated in fig. 1 and 2, a kind of area source lamp bar 1, including some LED chip groups 11, LED-baseplate set in array
12 and transparent mulch film 13, some LED chip groups 11 are encapsulated in the LED-baseplate 12, and the transparent mulch film 13 covers
Cover in some LED chip groups 11 and LED-baseplate 12；Wherein, some LED chip groups 11 are red bluish-green LED chip
Combination.
The transparent mulch film 13 can be covered in the LED chip group 11 and LED-baseplate 12 by heat pressing process,
Can be pasted in the LED chip group 11 and LED-baseplate 12 by way of pasting.
The area source lamp bar 1 does not use whole LED lamp finished product, but LED chip group 11 directly is encapsulated in into LED-baseplate
On 12, all LED chip groups 11 share layer of transparent cover layer 13, the metal binding without existing main flow list LED lamp finished product
The accessories such as line, housing, mold low cost, and the connection line between the LED chip group 11 is arranged in LED-baseplate 12, reliable
Property it is higher, and the area of the LED-baseplate 12 is big, is conducive to radiating；It is luminous using red bluish-green three-color LED chipset, can
Obtain the white light of color gamut value high.
Example IV
As shown in figure 3, a kind of direct-light-type backlight, including glue frame 2, be arranged on the bottom of glue frame 2 wiring board 3,
Be arranged on the wiring board 3 in embodiment one to the embodiment three of the side of glue frame 2 any described area source lamp bar 1, set
Put the heat-radiating substrate 4 away from the side of glue frame 2 in the wiring board 3.
The direct-light-type backlight replaces the spot light LED, Neng Gougeng of individual packages in the prior art using area source lamp bar 1
Heat dispersion is improved well and mitigates thickness, and the transparent mulch film 13 of light conversion film 13/ of area source lamp bar 1 can be played necessarily
Diffusing light effect, be conducive to the lightening of direct-light-type backlight.
The area source lamp bar 1 is connected by techniques such as SMT welding or ACF hot pressing with the wiring board 3, the LED
The pad welded with the wiring board 3 is provided with the back side and/or side of substrate 12, further, on the wiring board 3
Part circuit can be arranged in the LED-baseplate 12, with simplify wiring board 3 circuit design, the wiring board 3 be PCB
Or FPC.
The heat-radiating substrate 4 is preferably using the metal material that heat conductivility is good, preferably aluminium base, and the circuit
Plate 3 and heat-radiating substrate 4 are preferably integrated setting.
Optical film group 5 is provided with the glue frame 2, the optical film group 5 is light guide plate or/and diffusion barrier or/and increases
Light film or other optical films, in general the optical film group 5 include light guide plate, diffusion barrier, lower bright enhancement film and upper increasing successively
Light film, but, the type and quantity of optical film group 5 should be depending on actual demands, should not be as limit；Set on the glue frame 2
There is anti-dazzling screen 6, the anti-dazzling screen 6 is preferably two-sided with viscosity, and dorsad the side of the area source lamp bar 1 is black flour, towards institute
It is black flour or the face of fine flour or other colors to state the side of area source lamp bar 1；Extend some in the top of the glue frame 2
Retaining wall 21, when liquid crystal display module is assembled, for limiting the relative position between the direct-light-type backlight and display panel.
Reflector plate can be pasted on four inwalls of side of the glue frame 2, to improve the brightness of backlight, except this it
Outward, the bottom surface and four sides of the stepped locations of the assembling optical film of glue frame 2 group 5 can also paste reflector plate.
Used as the further optimization of the present embodiment, as shown in Figures 4 and 5, the periphery of the glue frame 2 is provided with metal frame 7, institute
State to be assembled by the buckle structure 21 of side between glue frame 2 and metal frame 7 and fix, the cross section of the metal frame 7 is L-shaped, institute
State wiring board 3 to paste on the bottom surface of the metal frame 7, the heat that the area source lamp bar 1 is produced can be transmitted to described
In metal frame 7, the surface area of backlight source heat-dissipating is increased, accelerate the radiating of backlight, the preferred heat conductivility of the metal frame 7 is good
Good metal material, such as aluminium alloy, stainless steel, iron etc..
Embodiment five
As shown in fig. 6, a kind of direct-light-type backlight, including metal frame 8, the circuit that is arranged on the bottom of the metal frame 8
Plate 3, it is arranged on any described area source lamp in embodiment one to the embodiment three of the side of metal frame 8 of the wiring board 3
Bar 1, it is arranged on heat-radiating substrate 4 of the wiring board 3 away from the side of metal frame 8.
The direct-light-type backlight replaces the spot light LED, Neng Gougeng of individual packages in the prior art using area source lamp bar 1
Heat dispersion is improved well and mitigates thickness, and the transparent mulch film 13 of light conversion film 13/ of area source lamp bar 1 can be played necessarily
Diffusing light effect, be conducive to the lightening of direct-light-type backlight.
In the prior art, direct-light-type backlight is used as the frame structure of support and is generally the glue frame of plastic cement material, glue frame
The capacity of heat transmission is poor, and the heat-radiating substrate 4 that the radiating of whole direct-light-type backlight is only relied on wiring board 3 is completed, and heat-radiating substrate 4 is general
It is aluminium base；Direct-light-type backlight in the technical program is of the prior art using the good substitution of metal frame 8 of heat conductivility
Glue frame, enhances the heat dispersion of direct-light-type backlight, the metal frame 8 can using the good metal of some heat conductivilitys or
Person's alloy, preferably aluminium alloy.
The area source lamp bar 1 is connected by techniques such as SMT welding or ACF hot pressing with the wiring board 3, the LED
The pad welded with the wiring board 3 is provided with the back side and/or side of substrate 12, further, on the wiring board 3
Part circuit can be arranged in the LED-baseplate 12, with simplify wiring board 3 circuit design, the wiring board 3 be PCB
Or FPC.
, by heat conduction glue bond, the heat-radiating substrate 4 is the good metal of heat conductivility for the metal frame 8 and wiring board 3
Or alloy, preferably aluminium base, the wiring board 3 and heat-radiating substrate 4 preferably by integrated setting, to strengthen the metal
Frame 8, wiring board 3 and the triangular collaboration heat-sinking capability of heat-radiating substrate 4.
Some pit-holes 81 are formed with least side of the metal frame 8, the pit-hole 81 can be arranged on the outer of side
On wall, it is also possible to be arranged on the inwall of side, it is preferably provided on the outer wall of side；Preferably, the four of the metal frame 8
The outer wall of individual side has been respectively formed on some pit-holes 81, and the pit-hole 81 can increase the surface area of metal frame 8, the metal frame
8 surface area is bigger, and its heat dispersion is better；The pit-hole 81 can run through the side of the metal frame 8, but preferably not pass through
Wear, stay certain wall thickness.
As shown in fig. 7, some pit-holes 81 mutually stagger, the interval region between pit-hole 81 forms a kind of similar network
The structure of shape reinforcement, prevents from causing the intensity decreases of metal frame 8 because pit-hole 81 is set.
The optical film group 5 is light guide plate or/and diffusion barrier or/and bright enhancement film or other optical films, in general institute
State optical film group 5 and include light guide plate, diffusion barrier, lower bright enhancement film and upper bright enhancement film successively, but, the type of optical film group 5 and
Quantity should be depending on actual demand, should not be as limit；Anti-dazzling screen 6 is provided with the metal frame 8, the anti-dazzling screen 6 is preferred
It is two-sided that dorsad the side of the area source lamp bar 1 is black flour with viscosity, towards the side of the area source lamp bar 1 be black flour,
Or the face of fine flour or other colors.
Reflector plate can be pasted on four inwalls of side of the metal frame 8, it is also possible to plate last layer reflective metals, than
Such as silver, to improve the brightness of backlight；In addition, the bottom surface of the stepped locations of the assembling of the metal frame 8 optical film group 5 and
Four sides can also paste one layer of reflective metals of reflector plate or plating.
Some retaining walls 82 are extended at the top of the metal frame 8, assemble liquid crystal display module when, for limit this it is straight under
Relative position between formula backlight and display panel；The inner side of the retaining wall 82 is pasted with cushion pad, prevents metal material
Retaining wall 82 damage glass material display panel, the cushion pad can be plastic cement or silica gel or the material such as PET or foam
Material.Further, a small glue frame can be made, small glue frame is pasted onto the top of the metal frame 8, or in the metal
The top of frame sets corresponding structure, and display panel is placed in small glue frame, small glue frame for being socketed.
Embodiment six
A kind of liquid crystal display module, including the backlight described in example IV or embodiment five.
Embodiment described above only expresses implementation method of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model the scope of the claims can not be interpreted as, as long as the institute in the form of equivalent or equivalent transformation
The technical scheme of acquisition, all should fall within protection domain of the present utility model.
Claims (10)
1. a kind of area source lamp bar, it is characterised in that including some LED chips/LED chip group, the LED-baseplate that are set in array
And light conversion film, some LED chips/LED chip group is encapsulated in the LED-baseplate, and the light conversion film is covered in institute
State in some LED chips/LED chip group and LED-baseplate.
2. area source lamp bar according to claim 1, it is characterised in that during the LED chip is red bluish-green LED chip
One kind, includes the fluorescent material and/or quantum dot that white light is complementarily shaped to the LED chip in the light conversion film.
3. area source lamp bar according to claim 1, it is characterised in that during the LED chip group is red bluish-green LED chip
Any two kinds of combination, the fluorescent material or amount that white light is complementarily shaped to the LED chip are included in the light conversion film
Sub- point.
4. a kind of area source lamp bar, it is characterised in that including set in array some LED chip groups, LED-baseplate and transparent cover
Epiphragma, some LED chip groups are encapsulated in the LED-baseplate, and the transparent mulch film is covered in some LED chips
In group and LED-baseplate；Wherein, the LED chip group is the combination of red bluish-green LED chip.
5. a kind of direct-light-type backlight, it is characterised in that including glue frame, the wiring board being arranged on the glue frame bottom, set
The wiring board in the claim 1-4 of glue frame side any described area source lamp bar, be arranged on the wiring board
Away from the heat-radiating substrate of glue frame side.
6. direct-light-type backlight according to claim 5, it is characterised in that the periphery of the glue frame is provided with metal frame,
The cross section of the metal frame is L-shaped, and the wiring board is pasted on the bottom surface of the metal frame.
7. a kind of direct-light-type backlight, it is characterised in that including metal frame, the wiring board being arranged on the metal frame bottom,
Be arranged on the wiring board in the claim 1-4 of metal frame side any described area source lamp bar, be arranged on it is described
Heat-radiating substrate of the wiring board away from metal frame side.
8. backlight according to claim 7, it is characterised in that the metal frame is formed with some holes on an at least side
Hole.
9. backlight according to claim 8, it is characterised in that some pit-holes mutually stagger.
10. a kind of liquid crystal display module, it is characterised in that including any described backlight in claim 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621329650.1U CN206209253U (en) | 2016-12-06 | 2016-12-06 | A kind of area source lamp bar, direct-light-type backlight and liquid crystal display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621329650.1U CN206209253U (en) | 2016-12-06 | 2016-12-06 | A kind of area source lamp bar, direct-light-type backlight and liquid crystal display module |
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| Publication Number | Publication Date |
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| CN206209253U true CN206209253U (en) | 2017-05-31 |
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ID=58754492
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621329650.1U Active CN206209253U (en) | 2016-12-06 | 2016-12-06 | A kind of area source lamp bar, direct-light-type backlight and liquid crystal display module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803149A (en) * | 2018-07-20 | 2018-11-13 | 京东方科技集团股份有限公司 | Area source and preparation method thereof and liquid crystal display device |
| US10901263B2 (en) | 2017-10-24 | 2021-01-26 | Huawei Technologies Co., Ltd. | Backlight module, display screen, and terminal |
-
2016
- 2016-12-06 CN CN201621329650.1U patent/CN206209253U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10901263B2 (en) | 2017-10-24 | 2021-01-26 | Huawei Technologies Co., Ltd. | Backlight module, display screen, and terminal |
| CN108803149A (en) * | 2018-07-20 | 2018-11-13 | 京东方科技集团股份有限公司 | Area source and preparation method thereof and liquid crystal display device |
| CN108803149B (en) * | 2018-07-20 | 2021-05-25 | 京东方科技集团股份有限公司 | Surface light source, manufacturing method thereof and liquid crystal display device |
| US11454845B2 (en) | 2018-07-20 | 2022-09-27 | Beijing Boe Display Technology Co., Ltd. | Surface light source, manufacturing method thereof and liquid crystal display device |
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