CN108401448A - The backlight module of backlight module lens and its composition - Google Patents
The backlight module of backlight module lens and its composition Download PDFInfo
- Publication number
- CN108401448A CN108401448A CN201780001157.8A CN201780001157A CN108401448A CN 108401448 A CN108401448 A CN 108401448A CN 201780001157 A CN201780001157 A CN 201780001157A CN 108401448 A CN108401448 A CN 108401448A
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- CN
- China
- Prior art keywords
- backlight module
- light
- module lens
- central point
- top surface
- 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
- G02F1/133606—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
- G02F1/133606—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
Abstract
The invention discloses a kind of backlight module lens, including being in cube structure substrate on the whole, substrate has the bottom surface of square, the top surface and side of square, recess forms incidence surface upwards at the center of bottom surface, protuberance forms main light-emitting surface upwards for top surface, main light-emitting surface is spliced including four free form surfaces, four free form surfaces have in conjunction with central point and combine central point central symmetry around this, this combines central point, and downwardly incidence surface is recessed and is located on same center line with the central point of incidence surface, the joint of main light-emitting surface and top surface forms the annular slope surface that a circle is inclined outwardly, in predetermined angle to constitute light modulation face between annular slope surface and top surface.The light efficiency figure of the present invention has certain remaining light around marginal position, when applied to backlight module, a plurality of backlight module lens are arranged into array, generated remaining light can eliminate dark space or clear zone caused by gap, and black surround or bright line will not be formed at binding site by ensureing makes whole light efficiency be evenly distributed with position.
Description
Technical field
The present invention relates to a kind of optical lenses that point light source is converted into area source, are especially carried on the back suitable for general lighting
Light technical field.
Background technology
With the development of large-size liquid crystal television technology, the backlight of LCD TV needs a large amount of LED to be arranged into array
Liquid crystal display panel is illuminated, there are one lens for setting before every LED chip, and two are carried out to the light come out from LED by lens
Secondary light distribution, to reduce the usage amount of backlight module thickness and LED, while the backlight for meeting liquid crystal wants briliancy and homogeneity
It asks.The circumference of LED lens currently on the market, the projection of optical texture top partial view diagram is mostly circle, optics knot
Structure partial shape is mostly rotational-symmetric form, therefore existing Straight-down type liquid crystal television LED lens hot spot is all circle, and light liquid
Brilliant tv display screen generally is rectangular, and the LED lens being distributed using rectangular light spot will be more reasonable, how by every lens
Hot spot be adjusted to it is regular it is rectangular be the technical issues that need to address.
The patent of invention of a Patent No. ZL201310095608.2 filed in 25 days March in 2013 of the applicant,
Disclose a kind of LED lens for directly-down liquid crystal backlight, lens are the entities being made of clear material, including bottom surface, are enclosed
The negative camber and positive camber extended in vertical direction around bottom surface, negative camber surrounding is recessed upwards forms the first optical surface, the
One optical surface is light incident surface, and positive camber includes the second optics song being mutually spliced that four surroundings are upwardly extended along bottom surface
Face, the second optical surface are refractive optical surface, and each second optical surface includes the side upwardly extended along bottom surface, laterally upwards
Protrusion upper convex surface, along the convex upper recess surface towards central concave.Although the invention solves the problems of the prior art, can
The rectangle or elliptical spot of a uniform illumination are formed on diffuser plate, but can not still be solved when LED forming arrays
Light modulation problem between each luminescence unit.
Large scale liquid crystal display technology will be in pluralistic trend, the faces such as 4K, curved surface, quantum dot, Rimless in recent years
Plate demand will welcome high growth.It will enter into the market along with consumption upgrading and trend in large size, 8K panels.It is with 75 inches
Example, 4K panel pixel closenesses are only 59ppi, and PPI can be promoted to 110 or more if being promoted to 8K, and display picture sophistication will
It is substantially improved.
In addition, HDR is the abbreviation of English " High Dynamatic Range " high dynamic range, refer to display effect more
Close to realistic colour seen by person, higher brightness and broader colour gamut are realized, the image quality promotion that HDR technologies are brought is intuitive
It can feel, even General Visitors also can be distinguished with the naked eye, therefore HDR skills are carried on tv product one after another in numerous manufacturers in this year
Art.According to the standard of Dolby Vision and UHD Lines, to realize that Real HDR must satisfy dynamic contrast, colour gamut
And the correlated condition of Peak Brightness.From the point of view of state-of-the art, dynamic range can reach 1500nits,
Minimum is only 0.05nit.The solution of HDR technologies mainly has following form：It is backlight subarea independence first from the point of view of hardware
Control；In addition backlight will use high colour gamut scheme, as Red using new fluorescent powder or uses quantum dot backlighting scheme.In addition to
Reach outside the standard of HDR in terms of hardware display, signal processing is also essential, and this requires chips to support HDR to solve
Code.Certainly, real HDR is realized, from the making of film source, coding and decoding, transmission and final display, all these links
It is required to the innovation and breakthrough of technology.
In TV market, because being influenced by panel price fluctuation, whole set of television manufacturer is faced with severe profit and chooses for a long time
War, and this technology will bring more true image quality to experience to user, be also beneficial to be promoted and make a profit.With industrial chain the relevant technologies
It is gradually ripe and break through, diversification is also presented in technology, and panel vendor attempts to have passed through LED local dimming technologies（LED local
dimming）HDR is realized with Tcon algorithms two ways, it is anticipated that coming years HDR TV will also welcome quick increasing
It is long.LED local dimming technologies（LED local dimming）Principle be by individually control the luminance of LED chip come
It realizes high contrast, however how to provide a kind of completely new backlight module lens, it is this with different luminances to match
LED chip（Such as with different light intensity, or with different shooting angles etc.）, be the invention solves another technology
Problem, this point have great technical meaning for this industry.
Invention content
To overcome the above disadvantages, the purpose of the present invention is to provide a kind of uniform backlight module of combination back lighting is saturating
Mirror.
In order to reach object above, the present invention provides a kind of backlight module lens, including are in cube structure on the whole
Substrate, the substrate have the bottom surface of square, square top surface and side, and the center of the bottom surface is recessed upwards
Incidence surface is formed, protuberance forms main light-emitting surface upwards for the top surface, and the main light-emitting surface includes that four free form surfaces splice
It forms, the free form surface described in four has in conjunction with central point and combines central point central symmetry around this, this combines central point
Downwardly incidence surface is recessed and is located on same center line with the central point of incidence surface, wherein the main light-emitting surface and
The joint of top surface forms the annular slope surface that a circle is inclined outwardly, in predetermined angle with structure between the annular slope surface and top surface
At light modulation face.
As further improvement of the invention, the angle of gradient of the annular slope surface is in 0.1 ° to 15 ° range.
As further improvement of the invention, the cross section undulate of the annular slope surface.
As further improvement of the invention, positioning column is provided on the bottom surface.
As further improvement of the invention, the bed-plate dimension of the substrate, which is less than top surface size, makes the side court
Cant angle theta inwardly1Angle is to form auxiliary light-emitting surface.
As further improvement of the invention, the θ1Angle is within the scope of 1-15 °.
As further improvement of the invention, reflection plated film is coated on the main light-emitting surface and auxiliary light-emitting surface.
As further improvement of the invention, it is made of glass or optical resin material.
According to another aspect of the present invention, a kind of backlight module, including a plurality of backlight modules as described above are provided
Lens are arranged into array, and LED chip is provided at the incidence surface of each backlight module lens.
The light efficiency figure of the present invention has certain remaining light around marginal position, a plurality of when applied to backlight module
Backlight module lens are arranged into array, and not close-packed arrays may have a gap between every lens, and generated remaining light
Dark space or clear zone caused by gap can be eliminated, ensures that will not form black surround or bright line at binding site makes whole light efficiency be distributed
Uniformly.
Description of the drawings
Attached drawing 1 is the stereoscopic schematic diagram according to the embodiment one of the backlight module lens of the present invention；
Attached drawing 2 is the schematic front view according to the embodiment one of the backlight module lens of the present invention；
Attached drawing 3 be attached drawing 2 in along the sectional view of A-A；
Attached drawing 4 is the illuminating effect light efficiency test chart of embodiment one；
Attached drawing 5 is the stereoscopic schematic diagram according to the embodiment two of the backlight module lens of the present invention；
Attached drawing 6 is the schematic front view according to the embodiment two of the backlight module lens of the present invention；
Attached drawing 7 be attached drawing 6 in along the sectional view of A-A；
Attached drawing 8 is the illuminating effect light efficiency test chart of embodiment two.
Specific implementation mode
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment one
Shown in each attached drawing 1 to attached drawing 4, the backlight module lens in the present embodiment are made of glass or optical resin material.
Substrate 1 is in cube structure on the whole, and substrate 1 has the bottom surface 2 of square, the top surface 3 of square and side 4, on bottom surface 2
Be provided with positioning column 10 for install position, the center of bottom surface 1 is recessed forms incidence surface 5 upwards.
Protuberance forms main light-emitting surface 6 upwards for top surface 3, and main light-emitting surface 6 is spliced including four free form surfaces 7, and four certainly
Had in conjunction with central point 8 by curved surface 7 and combine 8 central symmetry of central point around this, this combines the downwardly incidence surface of central point 8
5 are recessed and are located on same center line with the central point of incidence surface 5, wherein main light-emitting surface 6 and the joint of top surface 3 are formed
The annular slope surface that one circle is inclined outwardly, in 0.1 ° of angle to constitute light modulation face 12 between annular slope surface and top surface 3, annular slope surface
Cross section undulate（It is shown due to more difficult in the smaller figure of angle in this example）；2 size of bottom surface of substrate 1 is less than top surface 3
Size makes side towards inside cant angle theta1Angle is to form auxiliary light-emitting surface 9, tiltangleθ1Usually between 1-15 ° of range（2.5 ° of effects
Preferably）.Preferably, reflection plated film can be coated on main light-emitting surface 6, light modulation face 12 and auxiliary light-emitting surface 9.
The principle of the present invention is that main light-emitting surface 6 plays the intermediate region that incident light is uniformly projected to square projection surface；
The incident light of larger angle is refracted the position of the adjacent edges to be incident upon square projection surface by light modulation face 12；Wide-angle
Incident light be utilized by auxiliary light-emitting surface 9 to be incident upon the marginal position of square projection surface, otherwise these large angle incidences
Light will be by vertical offside reflection waste.It should be noted that since lens are integrated injection moldings, on annular slope surface contributes to
Mould realizes draft, tiltangleθ1Contribute to the realization of lower die draft process.
The light efficiency figure of the present invention has certain remaining light around marginal position, a plurality of when applied to backlight module
Backlight module lens are arranged into array, are provided with LED chip 11 at the incidence surface 5 of each backlight module lens, every lens it
Between not close-packed arrays may have gap（Gap at the beginning of designing by determining herein）, the angle by adjusting light modulation face 12 can
So that black surround will not be formed at binding site between every lens, it ensure that whole light efficiency is evenly distributed.
Embodiment two
Shown in each attached drawing 5 to attached drawing 8, the backlight module lens in the present embodiment are made of glass or optical resin material.
Substrate 1 is in cube structure on the whole, and substrate 1 has the bottom surface 2 of square, the top surface 3 of square and side 4, on bottom surface 2
Be provided with positioning column 10 for install position, the center of bottom surface 1 is recessed forms incidence surface 5 upwards.
Protuberance forms main light-emitting surface 6 upwards for top surface 3, and main light-emitting surface 6 is spliced including four free form surfaces 7, and four certainly
Had in conjunction with central point 8 by curved surface 7 and combine 8 central symmetry of central point around this, this combines the downwardly incidence surface of central point 8
5 are recessed and are located on same center line with the central point of incidence surface 5, wherein main light-emitting surface 6 and the joint of top surface 3 are formed
The annular slope surface that one circle is inclined outwardly, in 15 ° of angles to constitute light modulation face 12 between annular slope surface and top surface 3, annular slope surface
Cross section undulate；2 size of bottom surface of substrate 1, which is less than 3 size of top surface, makes side towards inside cant angle theta1Angle with formed it is auxiliary go out
Smooth surface 9, tiltangleθ 1 is usually between 1-15 ° of range（2.5 ° of effects are preferable）.Preferably, main light-emitting surface 6, light modulation face 12 and auxiliary
Reflection plated film can be coated on light-emitting surface 9.
The principle of the present invention is that main light-emitting surface 6 plays the intermediate region that incident light is uniformly projected to square projection surface；
The incident light of larger angle is refracted the position of the adjacent edges to be incident upon square projection surface by light modulation face 12；Wide-angle
Incident light be utilized by auxiliary light-emitting surface 9 to be incident upon the marginal position of square projection surface, otherwise these large angle incidences
Light will deviate square projected area by vertical side refraction.It should be noted that since lens are integrated injection molding, ring
Shape slope surface contributes to upper mold to realize draft, tiltangleθ1Contribute to the realization of lower die draft process.
Compared to embodiment one, the light efficiency figure of the present embodiment remaining light around marginal position is less, this is because light modulation face
12 angles are bigger to be emitted incident light wide-angle deviation.When applied to backlight module, a plurality of backlight module lens are arranged into
Array, is provided with LED chip 11 at the incidence surface 5 of each backlight module lens, and not close-packed arrays may between every lens
There can be gap（Gap at the beginning of designing by determining herein）, can make between every lens by adjusting the angle in light modulation face 12
Binding site at will not form black surround, there will not be bright line, ensure that whole light efficiency is evenly distributed.
The technical concepts and features of embodiment of above only to illustrate the invention, its object is to allow be familiar with technique
People understands present disclosure and is implemented, and it is not intended to limit the scope of the present invention, all according to spirit of that invention
The equivalent change or modification that essence is done should all cover within the scope of the present invention.
Claims (9)
1. a kind of backlight module lens, it is characterised in that：Including being in cube structure substrate on the whole, the substrate is with just
The top surface and side of rectangular bottom surface, square, recess forms incidence surface, the top surface upwards at the center of the bottom surface
Protuberance forms main light-emitting surface upwards, and the main light-emitting surface is spliced including four free form surfaces, freely bent described in four
Face have in conjunction with central point and around this combine central point central symmetry, this combine central point downwardly incidence surface recess and
Be located on same center line with the central point of incidence surface, wherein the joint of the main light-emitting surface and top surface formed one enclose to
The annular slope surface of outer incline, in predetermined angle to constitute light modulation face between the annular slope surface and top surface.
2. according to the backlight module lens required described in 1, it is characterised in that：The angle of gradient of the annular slope surface is in 0.1 ° extremely
15 ° of ranges.
3. backlight module lens according to claim 1, it is characterised in that：The cross section of the annular slope surface is in wave
Shape.
4. backlight module lens according to claim 1, it is characterised in that：The bed-plate dimension of the substrate is less than top surface
Size makes the side towards inside cant angle theta1Angle is to form auxiliary light-emitting surface.
5. backlight module lens according to claim 4, it is characterised in that：The θ1Angle is within the scope of 1-15 °.
6. backlight module lens according to claim 1, it is characterised in that：It is provided with positioning column on the bottom surface.
7. backlight module lens according to claim 1, it is characterised in that：Main light-emitting surface, auxiliary light-emitting surface and the tune
Coating reflection plated film in smooth surface.
8. backlight module lens according to claim 1, it is characterised in that：It is made of glass or optical resin material.
9. a kind of backlight module, it is characterised in that：Including a plurality of backlight module lens as described in any of the claims 1 to 8
It is arranged into array, LED chip is provided at the incidence surface of each backlight module lens.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/084322 WO2018209492A1 (en) | 2017-05-15 | 2017-05-15 | Backlight module lens and backlight module formed by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108401448A true CN108401448A (en) | 2018-08-14 |
Family
ID=63095062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780001157.8A Pending CN108401448A (en) | 2017-05-15 | 2017-05-15 | The backlight module of backlight module lens and its composition |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108401448A (en) |
| WO (1) | WO2018209492A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201027184A (en) * | 2009-01-05 | 2010-07-16 | Chi Mei Optoelectronics Corp | Backlight module and liquid crystal display device using the same and light emitting diode package |
| US20120300493A1 (en) * | 2011-05-26 | 2012-11-29 | Shenzhen China Star Optoelectronics Technology Co.,Ltd. | Light Source Module and a Backlight Module Using the Same |
| CN204227321U (en) * | 2014-11-19 | 2015-03-25 | 卿清波 | Secondary lens and backlight module |
| CN205640733U (en) * | 2016-01-20 | 2016-10-12 | 张志才 | Novel bi -concave backlight lens |
| CN205827020U (en) * | 2016-06-28 | 2016-12-21 | 周楠 | A kind of down straight aphototropism mode set |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818216B (en) * | 2012-06-05 | 2014-08-06 | 佛山市国星光电股份有限公司 | Large-angle lens and large-angle light-emergent LED (Light Emitting Diode) light source module |
| US8651707B1 (en) * | 2013-03-07 | 2014-02-18 | Ledlink Optics, Inc. | Optical lens for a LED having a quasi-elliptical shape |
| CN103277739B (en) * | 2013-04-26 | 2016-07-27 | 易美芯光（北京）科技有限公司 | A kind of optical lens |
| CN203744119U (en) * | 2013-12-19 | 2014-07-30 | 辅讯光电工业（苏州）有限公司 | Optical lens and backlight module using same |
| CN204141495U (en) * | 2014-09-22 | 2015-02-04 | 张志才 | Square focus spot backlight lens |
-
2017
- 2017-05-15 CN CN201780001157.8A patent/CN108401448A/en active Pending
- 2017-05-15 WO PCT/CN2017/084322 patent/WO2018209492A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201027184A (en) * | 2009-01-05 | 2010-07-16 | Chi Mei Optoelectronics Corp | Backlight module and liquid crystal display device using the same and light emitting diode package |
| US20120300493A1 (en) * | 2011-05-26 | 2012-11-29 | Shenzhen China Star Optoelectronics Technology Co.,Ltd. | Light Source Module and a Backlight Module Using the Same |
| CN204227321U (en) * | 2014-11-19 | 2015-03-25 | 卿清波 | Secondary lens and backlight module |
| CN205640733U (en) * | 2016-01-20 | 2016-10-12 | 张志才 | Novel bi -concave backlight lens |
| CN205827020U (en) * | 2016-06-28 | 2016-12-21 | 周楠 | A kind of down straight aphototropism mode set |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018209492A1 (en) | 2018-11-22 |
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Application publication date: 20180814 |