CN110119050A - A kind of backlight module and display device - Google Patents
A kind of backlight module and display device Download PDFInfo
- Publication number
- CN110119050A CN110119050A CN201910283308.4A CN201910283308A CN110119050A CN 110119050 A CN110119050 A CN 110119050A CN 201910283308 A CN201910283308 A CN 201910283308A CN 110119050 A CN110119050 A CN 110119050A
- Authority
- CN
- China
- Prior art keywords
- glue
- line
- backlight module
- refractive index
- adhesive layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of backlight module and display device, the backlight module includes a circuit board；Several LED chips are set on the circuit board；One first glue-line is set on the circuit board and covers the LED chip；An at least structural adhesive layer is set on first glue-line, and the structural adhesive layer includes one second glue-line, is set on first glue-line；One third glue-line is set on the second glue-line；Wherein, the refractive index of second glue-line is less than the refractive index of first glue-line and the third glue-line.The beneficial effects of the present invention are backlight modules of the invention and display device by the way that multilayer glue-line is arranged in LED chip, and multilayer glue-line is sequentially arranged in the LED chip by the high sequence of refractive index height, keeps the light issued from the LED chip emergent light into after crossing the refraction of multilayer glue-line more uniform soft.
Description
Technical field
The present invention relates to display field, in particular to a kind of backlight module and display device.
Background technique
The reduction spacing of Mini-LED realizes small OD (lamp plate to DP height), thus reach slimming design, however not
Have and changes traditional backlit type.Still there are light source, diffuser plate, the optical materials such as optical diaphragm in backlight at this time.Mini-LED
Lamp plate generallys use COB form, in order to protect LED chip to enclose one layer of glue (silica gel) again usually on lamp plate.
The simple diminution by OD (lamp plate to DP height) is difficult to reach ultimate attainment slimming effect to realize that slimming designs,
Whole design cost of light source increases simultaneously, and optimization design is not realized in overall structure.
Mini-LED scheme pouring into liquid crystal display die set needs to develop the further Integration Design side of dealer
Case, maximum plays Mini-LED scheme bring benefit, while realizing that it can production.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of backlight module and display devices, to solve in the prior art
Since there are light source, diffuser plate, the optical materials such as optical diaphragm for backlight module, to be difficult to reach ultimate attainment slimming effect.
The technical solution to solve the above problems is: a kind of backlight module, including a circuit board；Several LED chips are set to institute
It states on circuit board；One first glue-line is set on the circuit board and covers the LED chip；An at least structural adhesive layer is set to institute
It states on the first glue-line, the structural adhesive layer includes one second glue-line, is set on first glue-line；One third glue-line is set to the
On two glue-lines；Wherein, the refractive index of second glue-line is less than the refractive index of first glue-line and the third glue-line.
Further, at least a structural adhesive layer further includes filled layer, be set to second glue-line and the third glue-line it
Between.
Further, the filled layer includes several spheric granules.
Further, the material of the filled layer includes polymethyl methacrylate.
Further, the material therefor of first glue-line, second glue-line and the third glue-line includes silica gel, silicon
At least one of ketone glue, epoxy resin.
Further, bulge-structure is equipped with far from the surface of first glue-line in the structural adhesive layer；The protrusion knot
Configuration shape is prism, semicolumn, pyramid, one of semiglobe.
Further, the refractive index of first glue-line and third glue-line is equal to 1.6.
Further, the refractive index of second glue-line is less than or equal to 1.3.
Further, the thickness of the LED chip is less than the thickness of first glue-line.
The present invention also provides a kind of display devices, including the backlight module.
The invention has the advantages that backlight module and display device of the invention by LED chip be arranged multilayer glue-line,
And multilayer glue-line is sequentially arranged in the LED chip by the high sequence of refractive index height, makes the light issued from the LED chip
Line is more uniform soft into the emergent light after multilayer glue-line reflects is crossed.
Detailed description of the invention
The present invention is further explained with reference to the accompanying drawings and examples.
Fig. 1 is the backlight module schematic diagram in embodiment 1.
Fig. 2 is the display device schematic diagram in embodiment 1.
Fig. 3 is the backlight module schematic diagram in embodiment 2.
In figure
1,2 backlight module；10 circuit boards；
20LED chip；30 first glue-lines；
401,402 structural adhesive layer；50 filled layers；
41 second glue-lines；42 third glue-lines；
43 the 4th glue-lines；44 the 5th glue-lines；
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.Direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom" etc. are only
With reference to the direction of annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, rather than to limit this hair
It is bright.
Embodiment 1
As shown in Figure 1, backlight module 1 of the invention includes circuit board 10, LED chip 20, the first glue-line in the present embodiment
30, structural adhesive layer 40 and filled layer 50.
The circuit board 10 is printed circuit board, if dry circuit is distributed with thereon, to realize the electricity between electronic component
Letter connection.
The LED chip 20 is a kind of solid state semiconductor devices, and main material is monocrystalline silicon, and major function is will be electric
It can be converted into luminous energy, the light source as the backlight module 1.
First glue-line 30 is substratum transparent, and material is silica gel, silicone adhesive, epoxy resin etc., have high transparency,
High resiliency and good anti-ultraviolet ageing performance can effectively be packaged LED chip 20.
In the present embodiment, the structural adhesive layer 40 includes the second glue-line 41 and third glue-line 42, and second glue-line 41 is set
In on first glue-line 30, the third glue-line 42 is set to side of second glue-line 41 far from first glue-line 30.
The material of second glue-line 41 and the third glue-line 42 is identical as 30 material of the first glue-line, and difference exists
In the refractive index of second glue-line 41 is less than the refractive index of first glue-line 30 and the third glue-line 42, specifically, institute
The second glue-line 41 is stated less than or equal to 1.3, the refractive index of first glue-line 30 and the third glue-line 42 is greater than or equal to
1.6.When the light that the LED chip 20 issues enters first glue-line 30 and the structural adhesive layer 40, light is not via
Glue-line with refractive index is to achieve the effect that diffusion.
First glue-line 30 and the structural adhesive layer 40 form the high refractive index alternating structure of height, and low-index layer is
Second glue-line 41 agrees with air layer effect, and high refractive index layer, that is, first glue-line 30 and the third glue-line 42 agree with
Optical function diaphragm effect.
The filled layer 50 is set between second glue-line 41 and the third glue-line 42, specifically, the filled layer
50 be the glue-line filled with several spheroidal particles, and the material of the particle filled composite is polymethyl methacrylate,
The filled layer 50 is the array arrangement of the micro-feature structure on logical polymethyl methacrylate surface, passes through light
The refraction of Shi Fasheng different directions changes the travelling route of light, realizes that incident light sufficiently dissipates color, realizes softer, uniform photograph
Penetrate effect.
In order to preferably have the function that allow light to spread, in the present embodiment, 40 outermost layer of structural adhesive layer is i.e. described
Third glue-line 42 is equipped with bulge-structure 420 far from the side of second glue-line 41, and 420 shape of bulge-structure is prism,
Semicolumn, pyramid, one of semiglobe, specific effect change according to the difference of 420 shape of bulge-structure,
If the bulge-structure 420 uses prism structure, main function is to shrink light；If the bulge-structure 420 uses hemisphere
Structure, then the effect of the bulge-structure 420 is to receive light and diffusing light, and in the present embodiment, the bulge-structure 420 is using half
Spherical structure.
As shown in Fig. 2, display device 100 of the invention includes backlight module 1, technical characteristics in the present embodiment
It is embodied on the backlight module 1, other component no longer repeats one by one.
Embodiment 2
As shown in figure 3,1 structure of the backlight module in the present embodiment, in 2 structure of backlight module and embodiment 1
It is substantially similar, the difference lies in that the structural adhesive layer 40 further includes the 4th glue-line 43 and the 5th glue-line 44, institute in the present embodiment
The 4th glue-line 43 is stated set on side of the third glue-line 42 far from second glue-line 41, the 5th glue-line 44 is set to described
Side of 4th glue-line 43 far from the third glue-line 42.
The material of 4th glue-line 43 and the 5th glue-line 44 is identical as 30 material of the first glue-line, and difference exists
In the refractive index of the 4th glue-line 43 is less than the refractive index of first glue-line 30 and the third glue-line 42, specifically, institute
The 4th glue-line 43 is stated less than or equal to 1.3, the refractive index of the 5th glue-line 44 is greater than or equal to 1.6.
When the light that the LED chip 20 issues enters first glue-line 30 and the structural adhesive layer 40, light warp
By the glue-line of different refractivity to achieve the effect that diffusion.
In the present embodiment, 40 outermost layer of structural adhesive layer, that is, the 5th glue-line 44 far from the 4th glue-line 43 one
Side be equipped with bulge-structure 421,421 shape of bulge-structure be prism, semicolumn, pyramid, one of semiglobe,
Specific effect changes according to the difference of 421 shape of bulge-structure, if the bulge-structure 421 uses prism structure,
Main function is to shrink light；If the bulge-structure 421 uses semiglobe, the effect of the bulge-structure 421 is to receive
Light and diffusing light, in the present embodiment, the bulge-structure 421 uses semiglobe.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of backlight module, which is characterized in that including
One circuit board；
Several LED chips are set on the circuit board；
One first glue-line is set on the circuit board and covers the LED chip；
An at least structural adhesive layer is set on first glue-line, and the structural adhesive layer includes
One second glue-line is set on first glue-line；
One third glue-line is set on the second glue-line；
Wherein, the refractive index of second glue-line is less than the refractive index of first glue-line and the third glue-line.
2. backlight module according to claim 1, which is characterized in that at least a structural adhesive layer further includes filled layer, is set to
Between second glue-line and the third glue-line.
3. backlight module according to claim 2, which is characterized in that
The filled layer includes several spheric granules.
4. backlight module according to claim 2, which is characterized in that
The material of the filled layer includes polymethyl methacrylate.
5. backlight module according to claim 1, which is characterized in that
The material therefor of first glue-line, second glue-line and the third glue-line includes silica gel, silicone adhesive, epoxy resin
At least one of.
6. backlight module according to claim 5, which is characterized in that
Bulge-structure is equipped with far from the surface of first glue-line in the structural adhesive layer；
The bulge-structure shape is prism, semicolumn, pyramid, one of semiglobe.
7. backlight module according to claim 1, which is characterized in that
The refractive index of first glue-line and third glue-line is equal to 1.6.
8. backlight module according to claim 1, which is characterized in that
The refractive index of second glue-line is less than or equal to 1.3.
9. backlight module according to claim 1, which is characterized in that
The thickness of the LED chip is less than the thickness of first glue-line.
10. a kind of display device, which is characterized in that including any one backlight module described in claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283308.4A CN110119050A (en) | 2019-04-10 | 2019-04-10 | A kind of backlight module and display device |
| PCT/CN2019/086194 WO2020206790A1 (en) | 2019-04-10 | 2019-05-09 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910283308.4A CN110119050A (en) | 2019-04-10 | 2019-04-10 | A kind of backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110119050A true CN110119050A (en) | 2019-08-13 |
Family
ID=67520944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910283308.4A Pending CN110119050A (en) | 2019-04-10 | 2019-04-10 | A kind of backlight module and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110119050A (en) |
| WO (1) | WO2020206790A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114488606A (en) * | 2020-10-23 | 2022-05-13 | 合肥京东方显示技术有限公司 | Display device |
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| CN107731992A (en) * | 2017-11-28 | 2018-02-23 | 西安科锐盛创新科技有限公司 | LED encapsulation structure |
| CN108254970A (en) * | 2017-12-29 | 2018-07-06 | 宁波东辉光电科技有限公司 | A kind of straight-down negative optics backlight diaphragm structure |
| CN109581737A (en) * | 2017-09-28 | 2019-04-05 | 乐金显示有限公司 | Back light unit and liquid crystal display device including the back light unit |
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| JP4909450B2 (en) * | 2010-06-28 | 2012-04-04 | パナソニック株式会社 | Light emitting device, backlight unit, liquid crystal display device, and illumination device |
| CN104979455B (en) * | 2014-04-02 | 2018-02-09 | 四川新力光源股份有限公司 | A kind of LED light source device and its method for packing and backlight module and display device |
| CN107346801A (en) * | 2016-05-06 | 2017-11-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | LED integrated encapsulation structures and its method for packing |
| CN106772767A (en) * | 2016-12-30 | 2017-05-31 | 盐城三鼎电子科技有限公司 | A kind of ultrathin LED backlight source component |
| CN109459886B (en) * | 2018-10-31 | 2021-11-02 | 厦门天马微电子有限公司 | Backlight module, manufacturing method and display device |
| CN109270611A (en) * | 2018-12-11 | 2019-01-25 | 宁波激智科技股份有限公司 | A kind of complex optical film that high brightness height covers |
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2019
- 2019-04-10 CN CN201910283308.4A patent/CN110119050A/en active Pending
- 2019-05-09 WO PCT/CN2019/086194 patent/WO2020206790A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581737A (en) * | 2017-09-28 | 2019-04-05 | 乐金显示有限公司 | Back light unit and liquid crystal display device including the back light unit |
| CN107731992A (en) * | 2017-11-28 | 2018-02-23 | 西安科锐盛创新科技有限公司 | LED encapsulation structure |
| CN108254970A (en) * | 2017-12-29 | 2018-07-06 | 宁波东辉光电科技有限公司 | A kind of straight-down negative optics backlight diaphragm structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114488606A (en) * | 2020-10-23 | 2022-05-13 | 合肥京东方显示技术有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020206790A1 (en) | 2020-10-15 |
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