CN107807474A - A kind of structure and backlight module for minimizing refraction astigmat - Google Patents
A kind of structure and backlight module for minimizing refraction astigmat Download PDFInfo
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- CN107807474A CN107807474A CN201711037345.4A CN201711037345A CN107807474A CN 107807474 A CN107807474 A CN 107807474A CN 201711037345 A CN201711037345 A CN 201711037345A CN 107807474 A CN107807474 A CN 107807474A
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- lateral coordinates
- longitudinal coordinate
- refraction
- coordinate
- astigmat
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
Abstract
A kind of structure and backlight module for minimizing refraction astigmat of the present invention, the structure of miniaturization refraction astigmat are the axially symmetric structure relative to lens centre normal, and it includes：It is arranged at the first refractive face of lens upper surface；It is arranged at the second plane of refraction of lens base；It is arranged at the first diffusing reflection face of lens side surface;It is arranged at the second diffusing reflection face of lens base；Wherein the first diffusing reflection face is connected with the first refractive face and the second diffusing reflection face respectively；Second diffusing reflection face is also connected with second plane of refraction;This lens is using diffusing structure, and half light intensity angular spread of can send LED 120 ° is 162 ° of half light intensity angle so that the light mixing distance of LED backlight module further reduces, so as to reduce the thickness of backlight module.
Description
Technical field
The present embodiments relate to LCD backlight module technical field, and in particular to one kind miniaturization refraction astigmatism is saturating
The structure and backlight module of mirror.
Background technology
Liquid crystal display device (LCD, Liquid Crystal Display) has that in light weight, fuselage is thin, saves electric energy etc.
Many merits, thus be widely used.The backlight of traditional liquid crystal display device uses cold cathode ray tube (CCFL),
LED light source turned into and penetrated for substituting cold cathode because of the advantages that its illuminator is evenly distributed, the life-span is longer, the feature of environmental protection is more preferable at present
The novel backlight light source of spool (CCFL).
Ultrathin is the development trend of liquid crystal display device at present, and refraction type backlight lens are to use larger size at present
Light scattering function is realized with volume, the problem of injected plastics material use is more, and die cost is higher, and injection cycle is longer be present.To enter
One step reduces the processing cost of refraction type lens, by the way of the refraction type lens of smaller size and volume are optimal.By
In current light source be area source rather than spot light, therefore reduce the curve for changing lens is needed after volume come realize with greatly
Size lens identical astigmatism functions, realize and large scale lens identical optical quality.
The characteristics of due to optical principle, the curve for reducing the lens after volume are not that ratio is reduced, and curve has very big
Change, how to find suitable curve is the technical problem that those skilled in the art are badly in need of solving
The content of the invention
In view of the above problems, the embodiment of the present invention provides a kind of structure structure and backlight mould for minimizing refraction astigmat
Group, solve defect present in prior art, reduce the light mixing distance of backlight, and then further reduce the thickness of backlight module
Degree.
According to the one of embodiment of the present invention, there is provided a kind of structure for minimizing refraction astigmat, the miniaturization
The structure for reflecting astigmat is the axially symmetric structure relative to lens centre normal, and it includes：
It is arranged at the first refractive face of lens upper surface；
It is arranged at the second plane of refraction of lens base；
It is arranged at the first diffusing reflection face of lens side surface；
It is arranged at the second diffusing reflection face of lens base；Wherein the first diffusing reflection face respectively with the first refractive face and
Two diffusing reflection faces connect, and the first diffusing reflection face is defined as the origin in first refractive face with first refractive face tie point, i.e., vertical
It is O to coordinate and lateral coordinates；Second diffusing reflection face is also connected with second plane of refraction, the second diffusing reflection face and the second folding
The tie point for penetrating face is defined as the origin of the second plane of refraction, i.e. longitudinal coordinate and lateral coordinates is O；
Wherein, above-mentioned first refractive face and the second plane of refraction are curved surface, and along lens centre normal axial symmetry；With flat
Row is longitudinal direction in lens centre normal direction, and it is horizontal direction to be transversely to the machine direction direction, and above-mentioned curved surface has along vertical respectively
To direction and the curvature of horizontal direction, above-mentioned song can be defined on the basis of longitudinal profile, with longitudinal coordinate and lateral coordinates
The curvature for the SPL that face is formed；
The coordinate of the SPL in the first refractive face is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 0.5, lateral coordinates are between 0.22 to 0.32；
When longitudinal coordinate is 1, lateral coordinates are between 0.59 to 0.69；
When longitudinal coordinate is 1.5, lateral coordinates are between 1.11 to 1.21；
When longitudinal coordinate is 2, lateral coordinates are between 1.92 to 2.02；
When longitudinal coordinate is 2, lateral coordinates are between 3.65 to 3.75；
When longitudinal coordinate is 2.33, lateral coordinates are between 5.16 to 5.26；
The coordinate of the SPL of second plane of refraction is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 0.5, lateral coordinates are between -0.01 to 0.09；
When longitudinal coordinate is 1, lateral coordinates are between 0.08 to 0.18；
When longitudinal coordinate is 1.5, lateral coordinates are between 0.19 to 0.29；
When longitudinal coordinate is 2, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 2.5, lateral coordinates are between 0.6 to 0.7；
When longitudinal coordinate is 3, lateral coordinates are between 0.99 to 1.09；
When longitudinal coordinate is 3.42, lateral coordinates are between 1.7 to 1.8；
The unit of above-mentioned coordinate is millimeter.
Further, the coordinate of the SPL in the first refractive face is as follows:
When longitudinal coordinate is 0, lateral coordinates 0；
When longitudinal coordinate is 0.5, lateral coordinates 0.27；
When longitudinal coordinate is 1, lateral coordinates 0.64；
When longitudinal coordinate is 1.5, lateral coordinates 1.16；
When longitudinal coordinate is 2, lateral coordinates 1.97；
When longitudinal coordinate is 2, lateral coordinates 3.7；
When longitudinal coordinate is 2.33, lateral coordinates 5.21；
Further, the coordinate of the SPL of second plane of refraction is as follows:
When longitudinal coordinate is 0, lateral coordinates 0；
When longitudinal coordinate is 0.5, lateral coordinates 0.04；
When longitudinal coordinate is 1, lateral coordinates 0.13；
When longitudinal coordinate is 1.5, lateral coordinates 0.24；
When longitudinal coordinate is 2, lateral coordinates 0.41；
When longitudinal coordinate is 2.5, lateral coordinates 0.65；
When longitudinal coordinate is 3, lateral coordinates 1.04；
When longitudinal coordinate is 3.42, lateral coordinates 1.75；
Further, wherein, limit space is provided with below second plane of refraction, for installing LED lamp beads,
The structure that the LED lamp bead top surface reflects astigmat with the miniaturization has a certain distance.
Further, wherein the distance is 0.10mm.
Further, the material of the structure of the miniaturization refraction astigmat is acrylic.
The structure of miniaturization refraction astigmat provided in an embodiment of the present invention, this lens, can using diffusing structure
Using 120 ° of half light intensity angular spread for sending LED as 162 ° of half light intensity angle so that the light mixing distance of LED backlight module
Further reduce, so as to reduce the thickness of backlight module.
The size of lens is reduced to 13mm by 20mm or so, greatly reduces the size and volume of lens, while meets saturating
The astigmatism functions of mirror, ensure that the hot spot after astigmatism can reach the area source effect of high uniformity after array.
Another embodiment of the present invention provides a kind of backlight module, and it includes：Above-mentioned miniaturization refraction astigmat；
Backlight module provided in an embodiment of the present invention, due to employing miniaturization refraction astigmat in its LED backlight
Structure, reduce the light mixing distance of backlight module, so as to reduce further the distance of backlight module, be beneficial to liquid crystal display
Device it is lightening.
The backlight module application background of the present invention is LCD TV backlight industry, and the professional standard of TV industry is usually will
Seek 9 brightness uniformities>85%, and it is of the invention, after array, 9 brightness uniformities can be reached>90% effect.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1:The lens arrangement schematic diagram of the present invention；
Fig. 2:Half light intensity angular distribution figure after lens of 120 ° of half light intensity that LED is sent by the present invention；
Fig. 3:Multi-point sampler design sketch on the backlight module application LCD TV of the present invention；.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
As Figure 1-3, the miniaturization for the embodiment of the present invention reflects the structural representation of the structure of astigmat.There is provided
A kind of structure for minimizing refraction astigmat, the structure of miniaturization refraction astigmat is relative to lens centre normal
Axially symmetric structure, it includes：
It is arranged at the first refractive face 1 of lens upper surface；
It is arranged at the second plane of refraction 2 of lens base；
It is arranged at the first diffusing reflection face 4 of lens side surface；
It is arranged at the second diffusing reflection face 3 of lens base；Wherein the first diffusing reflection face 4 respectively with the first refractive face 1
Connected with the second diffusing reflection face 3, the first diffusing reflection face 4 is defined as first refractive face 1 with the tie point 5 of first refractive face 1
Origin, i.e. longitudinal coordinate and lateral coordinates are O；Second diffusing reflection face 3 is also connected with second plane of refraction 2, and second is unrestrained anti-
The tie point 6 for penetrating the plane of refraction 2 of face 3 and second is defined as the origin of the second plane of refraction 2, i.e. longitudinal coordinate and lateral coordinates is O；
Wherein, the above-mentioned plane of refraction 2 of first refractive face 1 and second is curved surface, and along lens centre normal axial symmetry；With
It is longitudinal direction parallel to lens centre normal direction, it is horizontal direction to be transversely to the machine direction direction, and above-mentioned curved surface has edge respectively
The curvature of longitudinal direction and horizontal direction, it can be defined on the basis of longitudinal profile, with longitudinal coordinate and lateral coordinates above-mentioned
The curvature for the SPL that curved surface is formed；
Coordinate with reference to table 1, the SPL in the first refractive face 1 is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02, and preferably 0；
When longitudinal coordinate is 0.5, lateral coordinates are between 0.22 to 0.32, and preferably 0.27；
When longitudinal coordinate is 1, lateral coordinates are between 0.59 to 0.69, and preferably 0.64；
When longitudinal coordinate is 1.5, lateral coordinates are between 1.11 to 1.21, and preferably 1.16；
When longitudinal coordinate is 2, lateral coordinates are between 1.92 to 2.02, and preferably 1.97；
When longitudinal coordinate is 2, lateral coordinates are between 3.65 to 3.75, and preferably 3.7；
When longitudinal coordinate is 2.33, lateral coordinates are between 5.16 to 5.26, and preferably 5.21.
Table 1
Coordinate with reference to table 2, the SPL of second plane of refraction is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02, and preferably 0；
When longitudinal coordinate is 0.5, lateral coordinates are between -0.01 to 0.09, and preferably 0.04；
When longitudinal coordinate is 1, lateral coordinates are between 0.08 to 0.18, and preferably 0.13；
When longitudinal coordinate is 1.5, lateral coordinates are between 0.19 to 0.29, and preferably 0.24；
When longitudinal coordinate is 2, lateral coordinates are between -0.02 to 0.02, and preferably 0.41；
When longitudinal coordinate is 2.5, lateral coordinates are between 0.6 to 0.7, and preferably 0.65；
When longitudinal coordinate is 3, lateral coordinates are between 0.99 to 1.09, and preferably 1.04；
When longitudinal coordinate is 3.42, lateral coordinates are between 1.7 to 1.8, and preferably 1.75；
The unit of above-mentioned coordinate is millimeter.
| Longitudinal coordinate | Horizontal preferred value | Horizontal minimum value | Horizontal maximum |
| 0 | 0 | -0.02 | 0.02 |
| 0.5 | 0.04 | -0.01 | 0.09 |
| 1 | 0.13 | 0.08 | 0.18 |
| 1.5 | 0.24 | 0.19 | 0.29 |
| 2 | 0.41 | -0.02 | 0.02 |
| 2.5 | 0.65 | 0.6 | 0.7 |
| 3 | 1.04 | 0.99 | 1.09 |
| 3.42 | 1.75 | 1.7 | 1.8 |
Table 2
Further, wherein, the lower section of second plane of refraction 2 is provided with limit space, for mounted LED lamp bulb,
The structure that the LED lamp bead top surface reflects astigmat with the miniaturization has a certain distance, wherein the distance is
0.10mm。
Further, the material of the structure of the miniaturization refraction astigmat is acrylic.
The structure of miniaturization refraction astigmat provided in an embodiment of the present invention, this lens, can using diffusing structure
Using 120 ° of half light intensity angular spread for sending LED as 162 ° of half light intensity angle so that the light mixing distance of LED backlight module
Further reduce, so as to reduce the thickness of backlight module.
The size of lens is reduced to 13mm by 20mm or so, greatly reduces the size and volume of lens, while meets saturating
The astigmatism functions of mirror, ensure that the hot spot after astigmatism can reach the area source effect of high uniformity after array.
Another embodiment of the present invention provides a kind of backlight module, and it includes：Above-mentioned miniaturization refraction astigmat；
Backlight module provided in an embodiment of the present invention, due to employing miniaturization refraction astigmat in its LED backlight,
The light mixing distance of backlight module is reduced, so as to reduce further the distance of backlight module, is beneficial to liquid crystal display device
It is lightening.
The backlight module application background of the present invention is LCD TV backlight industry, and the professional standard of TV industry is usually will
Seek 9 brightness uniformities>85%, and it is of the invention, after array, 9 brightness uniformities can be reached>90% effect.
When in use, the light path of 120 ° that can send LED of half light intensity angle of lens of the invention first passes through
Two planes of refraction 2 are refracted to lens interior, and a portion light path is refracted to outside, another part light path warp from first refractive face 1
Cross the first diffusing reflection face 4 and the second diffusing reflection face 3 and outside is passed in a manner of irreflexive.
It should be pointed out that it is limitation of the present invention that described above, which is not, the present invention is also not limited to the example above,
What those skilled in the art were made in essential scope of the present utility model changes, is modified, adds or replaces,
Also protection scope of the present invention should be belonged to.
Claims (7)
1. a kind of structure and backlight module for minimizing refraction astigmat, the structure of miniaturization refraction astigmat is relative
In the axially symmetric structure of lens centre normal, it includes：
It is arranged at the first refractive face of lens upper surface；
It is arranged at the second plane of refraction of lens base；
It is arranged at the first diffusing reflection face of lens side surface；
It is arranged at the second diffusing reflection face of lens base；Wherein the first diffusing reflection face is unrestrained with the first refractive face and second respectively
Reflecting surface connects；Second diffusing reflection face is also connected with second plane of refraction；
Wherein, above-mentioned first refractive face and the second plane of refraction are curved surface, and along lens centre normal axial symmetry；With parallel to
Lens centre normal direction is longitudinal direction, and it is horizontal direction to be transversely to the machine direction direction, and above-mentioned curved surface has along longitudinal side respectively
To the curvature with horizontal direction, above-mentioned curved surface institute can be defined on the basis of longitudinal profile, with longitudinal coordinate and lateral coordinates
The curvature of the SPL of formation；
The coordinate of the SPL in the first refractive face is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 0.5, lateral coordinates are between 0.22 to 0.32；
When longitudinal coordinate is 1, lateral coordinates are between 0.59 to 0.69；
When longitudinal coordinate is 1.5, lateral coordinates are between 1.11 to 1.21；
When longitudinal coordinate is 2, lateral coordinates are between 1.92 to 2.02；
When longitudinal coordinate is 2, lateral coordinates are between 3.65 to 3.75；
When longitudinal coordinate is 2.33, lateral coordinates are between 5.16 to 5.26；
The coordinate of the SPL of second plane of refraction is as follows:
When longitudinal coordinate is 0, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 0.5, lateral coordinates are between -0.01 to 0.09；
When longitudinal coordinate is 1, lateral coordinates are between 0.08 to 0.18；
When longitudinal coordinate is 1.5, lateral coordinates are between 0.19 to 0.29；
When longitudinal coordinate is 2, lateral coordinates are between -0.02 to 0.02；
When longitudinal coordinate is 2.5, lateral coordinates are between 0.6 to 0.7；
When longitudinal coordinate is 3, lateral coordinates are between 0.99 to 1.09；
When longitudinal coordinate is 3.42, lateral coordinates are between 1.7 to 1.8；
The unit of above-mentioned coordinate is millimeter.
2. the structure of miniaturization refraction astigmat according to claim 1, the SPL in the first refractive face
Coordinate is as follows:
When longitudinal coordinate is 0, lateral coordinates 0；
When longitudinal coordinate is 0.5, lateral coordinates 0.27；
When longitudinal coordinate is 1, lateral coordinates 0.64；
When longitudinal coordinate is 1.5, lateral coordinates 1.16；
When longitudinal coordinate is 2, lateral coordinates 1.97；
When longitudinal coordinate is 2, lateral coordinates 3.7；
When longitudinal coordinate is 2.33, lateral coordinates 5.21.
3. the structure of miniaturization refraction astigmat according to claim 1, the SPL of second plane of refraction
Coordinate is as follows:
When longitudinal coordinate is 0, lateral coordinates 0；
When longitudinal coordinate is 0.5, lateral coordinates 0.04；
When longitudinal coordinate is 1, lateral coordinates 0.13；
When longitudinal coordinate is 1.5, lateral coordinates 0.24；
When longitudinal coordinate is 2, lateral coordinates 0.41；
When longitudinal coordinate is 2.5, lateral coordinates 0.65；
When longitudinal coordinate is 3, lateral coordinates 1.04；
When longitudinal coordinate is 3.42, lateral coordinates 1.75.
4. the structure of miniaturization refraction astigmat according to claim 1, wherein, in the lower section of second plane of refraction
Limit space is provided with, for mounted LED lamp bulb, the LED lamp bead top surface reflects the structure of astigmat with the miniaturization
There is a certain distance.
5. the structure of miniaturization refraction astigmat according to claim 4, wherein the distance is 0.10mm.
6. the structure of miniaturization refraction astigmat according to claim 1, wherein, the miniaturization refraction astigmat
The material of structure be acrylic.
7. a kind of backlight module, it includes：Any described miniaturization refraction astigmat in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037345.4A CN107807474A (en) | 2017-10-30 | 2017-10-30 | A kind of structure and backlight module for minimizing refraction astigmat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037345.4A CN107807474A (en) | 2017-10-30 | 2017-10-30 | A kind of structure and backlight module for minimizing refraction astigmat |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561085A (en) * | 2009-05-14 | 2009-10-21 | 上海广电光电子有限公司 | Wide-angle LED light source |
| US20130155690A1 (en) * | 2011-12-14 | 2013-06-20 | E-Pin Optical Industry Co., Ltd. | Led lens and light emitting device using the same |
| CN204285310U (en) * | 2014-11-19 | 2015-04-22 | 广东瑞捷光电股份有限公司 | Optical lens, lamp bar and down straight aphototropism mode set |
| KR20170013696A (en) * | 2015-07-28 | 2017-02-07 | 엘지디스플레이 주식회사 | Light-Diffusing Lens and Backlight Unit and Display Device having the same |
| CN207965428U (en) * | 2017-10-30 | 2018-10-12 | 胜蓝科技股份有限公司 | A kind of structure and backlight module of miniaturization refraction astigmat |
-
2017
- 2017-10-30 CN CN201711037345.4A patent/CN107807474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561085A (en) * | 2009-05-14 | 2009-10-21 | 上海广电光电子有限公司 | Wide-angle LED light source |
| US20130155690A1 (en) * | 2011-12-14 | 2013-06-20 | E-Pin Optical Industry Co., Ltd. | Led lens and light emitting device using the same |
| CN204285310U (en) * | 2014-11-19 | 2015-04-22 | 广东瑞捷光电股份有限公司 | Optical lens, lamp bar and down straight aphototropism mode set |
| KR20170013696A (en) * | 2015-07-28 | 2017-02-07 | 엘지디스플레이 주식회사 | Light-Diffusing Lens and Backlight Unit and Display Device having the same |
| CN207965428U (en) * | 2017-10-30 | 2018-10-12 | 胜蓝科技股份有限公司 | A kind of structure and backlight module of miniaturization refraction astigmat |
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