CN109932841A - A kind of direct-light-type backlight with optically focused bracket - Google Patents
A kind of direct-light-type backlight with optically focused bracket Download PDFInfo
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- CN109932841A CN109932841A CN201910263988.3A CN201910263988A CN109932841A CN 109932841 A CN109932841 A CN 109932841A CN 201910263988 A CN201910263988 A CN 201910263988A CN 109932841 A CN109932841 A CN 109932841A
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- optically focused
- light
- direct
- bracket
- type backlight
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- 239000011324 bead Substances 0.000 claims abstract description 37
- 238000009792 diffusion process Methods 0.000 claims abstract description 21
- 230000004888 barrier function Effects 0.000 claims abstract description 19
- 239000002390 adhesive tape Substances 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012356 Product development Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
A kind of direct-light-type backlight with optically focused bracket, including bottom plate；It is characterized by: being provided with flexible circuit board on the bottom plate, it is provided with several LED lamp beads in flexible circuit board, optically focused bracket is provided with around each LED lamp bead, the optically focused bracket is connected to a fixed by adhesive tape and flexible circuit board；It is provided with diffuser plate above the optically focused bracket, is provided with diffusion barrier above diffuser plate；The configuration of the present invention is simple can specify display area, no light leakage, and regular can show, increase light source utilization rate, improve pH effect efficiency and picture homogeneity；And product development cycle is short, and production cost is low.
Description
Technical field
The present invention relates to the field of backlight more particularly to a kind of direct-light-type backlights with optically focused bracket.
Background technique
Direct-light-type backlight generally uses form for LED lamp bead is soft in FPC by SMT surface mounting technology actual load at present
Property wiring board on, lens are placed above LED lamp bead lamp bead, for increasing the light emitting angle of LED lamp bead, due to different LED light
Pearl, light emitting angle is different, therefore lens used are also different, and lens need to be matched with the light emitting angle of LED lamp bead, be resulted in this way
The lens model needed is various, and material logistics are difficult, and the development cost of entire direct-light-type backlight increases, and the development cycle is elongated；
Therefore it needs to design a kind of new direct-light-type backlight.
Summary of the invention
It is an object of the present invention to provide a kind of direct-light-type backlights with optically focused bracket, and structure is simple, effectively change LED lamp bead
The direction of propagation mode of light source；Solves the above technical problem.
In order to achieve the above technical purposes, reach above-mentioned technical requirements, the technical scheme adopted by the invention is that: it is a kind of
Direct-light-type backlight with optically focused bracket, including bottom plate；It is characterized by: flexible circuit board is provided on the bottom plate, it is soft
Property wiring board on be provided with several LED lamp beads, be provided with optically focused bracket around each LED lamp bead, the optically focused bracket is logical
Adhesive tape is crossed to be connected to a fixed with flexible circuit board；Diffuser plate, setting above diffuser plate are provided with above the optically focused bracket
There is diffusion barrier.
Preferred: the optically focused bracket is set as inverted cone, and cone communicates up and down；Adjacent optically focused pedestal upper end
It is connected.
Preferred: the optically focused pedestal lower end is provided with positioning column, positioning column and the location hole phase in flexible circuit board
Cooperation.
Preferred: the height of the optically focused bracket is set as 3-8mm, and the taper of optically focused bracket is set as 1 ° -10 °.
Preferred: the optically focused bracket uses optical grade PC plastic material.
Preferred: the optically focused bracket is by being integrally formed.
Preferred: the LED lamp bead is set as top light emitting, and light emitting angle is set as 120 ° -140 °.
Beneficial effects of the present invention；A kind of direct-light-type backlight with optically focused bracket, compared with traditional structure: adjacent is poly-
Light pedestal upper end is connected, and keeps optically focused bracket easy for installation, increases intensity；Optically focused bracket is arranged around LED lamp bead, is inverted
Cone, and use optical grade PC plastic material, suitable for different LED lamp beads, no replacement is required optically focused bracket can effectively change
The direction of propagation mode of LED lamp bead light source, enables light source uniformly to project, light source is avoided to diffuse；The setting of optically focused frame bottom
There are positioning pillars, location hole is provided in flexible circuit board, positioning pillars are matched with location hole so that the installation of optically focused bracket is fast
It is fast accurate, keep the structure of optically focused bracket more stable；The configuration of the present invention is simple can specify display area, no light leakage, and can advise
It then shows, increases light source utilization rate, improve pH effect efficiency and picture homogeneity；And product development cycle is short, and it is raw
It produces at low cost.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the partial enlarged view of Fig. 1 of the present invention；
Fig. 3-Figure 15 is optical effect figure；
In figure: 1. bottom plates；2. flexible circuit board；3.LED lamp bead；4. optically focused bracket；5. diffuser plate；6. diffusion barrier.
Specific embodiment
In order to be more clear goal of the invention of the invention, technical solution and its advantageous effects, below in conjunction with attached drawing
And specific embodiment, the present invention will be described in further detail；
In the accompanying drawings: a kind of direct-light-type backlight with optically focused bracket, including bottom plate 1；It is characterized by: on the bottom plate 1
It is provided with flexible circuit board 2, several LED lamp beads 3 are provided in flexible circuit board 2, are provided with around each LED lamp bead 3 poly-
Light bracket 4, the optically focused bracket 4 are connected to a fixed by adhesive tape with flexible circuit board 2；The top of the optically focused bracket 4
It is provided with diffuser plate 5, diffusion barrier 6 is provided with above diffuser plate 5.
The optically focused bracket 4 is set as inverted cone, and cone communicates up and down；Adjacent 4 upper end of optically focused bracket is connected；
4 lower end of optically focused bracket is provided with positioning column, and positioning column is matched with the location hole in flexible circuit board 2；Described is poly-
The height of light bracket 4 is set as 3-8mm, and the taper of optically focused bracket 4 is set as 1 ° -10 °；The optically focused bracket 4 uses optics
Grade PC plastic material；The optically focused bracket 4 is by being integrally formed；4 bottom of optically focused bracket is set as and bottom plate 1
The arc to match；The LED lamp bead 3 is set as top light emitting, and light emitting angle is set as 120 ° -140 °.
Specific implementation of the invention: LED lamp bead is first passed through SMT surface mount skill by the assembling process of backlight of the present invention
Art piece is soldered in FPC flexible circuit board, and the gap then reserved by FPC flexible circuit board attaches adhesive tape, removes glue
The protective film taken, by the positioning column of optically focused bracket, the location hole along FPC flexible circuit board is inserted into, fixes；Again in adhesive tape
The place of attaching need to be pressed with hand, effectively guide-lighting to ensure that optically focused bracket is closely adhered with FPC flexible circuit board；Finally successively assemble
Good light guide plate and light guiding film.
Embodiment 1
The parameter that LED lamp bead is arranged is as follows:
Quantity: 1；
Top: lambert 85% is reflected, and 15% absorbs；
Fluorescence coating: lambert 60% is reflected, and 40% absorbs；
Substrate layer: lambert 85% is reflected, and 15% absorbs；
The mixing of 10M light, inverse analog；
It is as follows that optically focused support parameter is set:
Material (light 2501 or Mitsubishi 3100 out)；
Simple reflex mirror: 90% reflection, 10% absorbs；
The high 5mm of bracket；
2 degree of semi-cone angle；
Remaining relevant parameter is as follows:
PCB
Simple scattering, lambert: 50% reflection, 50% absorbs.
Diffusion barrier
System carries measured data, individually below with: BS910, BS912, CH880,100PBU, D121UP are compared.
Using 1 LED lamp bead, diffusion barrier selects BS910, and optical effect figure is shown in attached drawing 3；
Using 1 LED lamp bead, diffusion barrier selects BS912, and optical effect figure is shown in attached drawing 4；
Using 1 LED lamp bead, diffusion barrier selects CH880, and optical effect figure is shown in attached drawing 5；
Using 1 LED lamp bead, diffusion barrier selects KIMOTO 100PBU, and optical effect figure is shown in attached drawing 6；
Using 1 LED lamp bead, diffusion barrier selects D121UP, and optical effect figure is shown in attached drawing 7；
In terms of the above sunykatuib analysis, the type of diffusion has a certain impact to optics, in addition to BS912 material is thicker, other materials
Difference on effect it is little；But it is found during simulation, the lesser radian variation of optically focused bracket just has ratio to the homogeneity of light
Biggish variation, the later period, assembly and mold requirement on machining accuracy were relatively high in use process.
Embodiment 2
The LED lamp bead with a kind of specification of the same race of embodiment is selected, the application mould of LED lamp bead is carried out to the optically focused bracket of the height of 8mm
It is quasi-, the ideal structure selected；
Using 1 LED, board parameter: T=1.5mm, gap 0.3mm is spread, diffusion barrier selects BS910；Optical analog effect is shown in attached
Fig. 8, attached drawing 9；
Using 1 LED lamp bead, board parameter: T=1.5mm, gap 0.3mm is spread, diffusion barrier selects KIMOTO_100PBU；Optics
Effect is shown in attached drawing 10, attached drawing 11；
Above-mentioned analog result obtains the optical effect of the family of optically focused of the optical effect better than 5mm high of the optically focused bracket of 8mm high；
This structure is required already close to us, continues the simulation of 9 LED.
Embodiment 3 spreads board parameter: T=1.5mm, gap 0.3mm using 9 LED lamp beads, and diffusion barrier selects KIMOTO_
100PBU；Optical effect figure is shown in attached drawing 12；
Conclusion: carrying out simulation discovery to 9 LED lamp beads, using sustained height optically focused supporting structure when, meet single LED lamp
The optical effect requirement of pearl, can not meet the optical effect requirement of 9 LED lamp beads simultaneously.Preliminary analysis is that diffuser plate has biography
Diffuser plate, is changed into diffusion membrane structure by light function, the bracket intermediate absorption light on both sides.
Using 9 LED lamp beads, diffusion barrier selects KIMOTO_100PBU, gap 0.3mm；Optical effect figure is shown in attached drawing
13；
Conclusion: optically focused bracket intersection is too bright, solution: reducing the gap between diffusion barrier and optically focused bracket, T=0.05mm；
Using 9 LED lamp beads, diffusion barrier selects KIMOTO_100PBU, T=0.05mm；Optical effect figure is shown in attached drawing 14；
Conclusion: optically focused bracket intersection is partially dark, improvement project, increases the gap between diffusion barrier and optically focused bracket, T=0.15mm
Using 9 LED lamp beads, diffusion barrier selects KIMOTO_100PBU, gap 0.15mm；Optical effect is shown in attached drawing 15；
Conclusion: in terms of the above sunykatuib analysis, optically focused bracket, single LED, which is lighted, lights that comparison in difference is big with region, and the later period sets
Meter mainly meets area surface homogeneity, or region homogeneity and the homogeneity of single LED lamp bead is balanced, and then leads to again
Liquid crystal is crossed to compensate.
Above-described embodiment is only intended to clearly illustrate description made by the present invention, and does not limit the embodiments,
To those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
Dynamic, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (8)
1. a kind of direct-light-type backlight with optically focused bracket, including bottom plate (1)；It is characterized by: being arranged on the bottom plate (1)
Flexible wiring board (2) is provided with several LED lamp beads (3) in flexible circuit board (2), is respectively provided with around each LED lamp bead (3)
Have optically focused bracket (4), the optically focused bracket (4) is connected to a fixed by adhesive tape with flexible circuit board (2)；The optically focused branch
It is provided with above frame (4) diffuser plate (5), is provided with diffusion barrier (6) above diffuser plate (5).
2. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
Frame (4) is set as inverted cone, and cone communicates up and down；Adjacent optically focused bracket (4) upper end is connected.
3. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
Frame (4) lower end is provided with positioning column, and positioning column is matched with the location hole on flexible circuit board (2).
4. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
The height of frame (4) is set as 3-8mm, and the taper of optically focused bracket (4) is set as 1 ° -10 °.
5. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
Frame (4) uses optical grade PC plastic material.
6. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
Frame (4) is by being integrally formed.
7. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the optically focused branch
Frame (4) bottom is set as the arc to match with bottom plate (1).
8. a kind of direct-light-type backlight with optically focused bracket according to claim 1, it is characterised in that: the LED light
Pearl (3) is set as top light emitting, and light emitting angle is set as 120 ° -140 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910263988.3A CN109932841A (en) | 2019-04-03 | 2019-04-03 | A kind of direct-light-type backlight with optically focused bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910263988.3A CN109932841A (en) | 2019-04-03 | 2019-04-03 | A kind of direct-light-type backlight with optically focused bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109932841A true CN109932841A (en) | 2019-06-25 |
Family
ID=66989192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910263988.3A Pending CN109932841A (en) | 2019-04-03 | 2019-04-03 | A kind of direct-light-type backlight with optically focused bracket |
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|---|---|---|---|---|
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| CN104977756A (en) * | 2015-06-02 | 2015-10-14 | 南京熊猫电子股份有限公司 | Method for avoiding cross-hatching phenomenon of direct type LED backlight LCD TV |
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| CN107908044A (en) * | 2018-01-02 | 2018-04-13 | 京东方科技集团股份有限公司 | Flexible backlight source and preparation method thereof, display device |
| CN109085719A (en) * | 2018-08-10 | 2018-12-25 | 深圳市华星光电技术有限公司 | Direct LED backlight |
| CN209560241U (en) * | 2019-04-03 | 2019-10-29 | 靖江市永盛光电科技有限公司 | A kind of direct-light-type backlight with optically focused bracket |
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2019
- 2019-04-03 CN CN201910263988.3A patent/CN109932841A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050281050A1 (en) * | 2004-06-18 | 2005-12-22 | Au Optronics Corp. | Support member and light emitting diode module using the same |
| CN1588658A (en) * | 2004-07-01 | 2005-03-02 | 友达光电股份有限公司 | Light-emitting diode light source module with support piece |
| KR20080053699A (en) * | 2006-12-11 | 2008-06-16 | 엘지디스플레이 주식회사 | Backlight assembly for liquid crystal display device |
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| CN103712160A (en) * | 2013-12-24 | 2014-04-09 | 南京中电熊猫液晶显示科技有限公司 | Diffusion plate support and backlight module |
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