CN106609959A - A direct type directional backlight source - Google Patents
A direct type directional backlight source Download PDFInfo
- Publication number
- CN106609959A CN106609959A CN201611228382.9A CN201611228382A CN106609959A CN 106609959 A CN106609959 A CN 106609959A CN 201611228382 A CN201611228382 A CN 201611228382A CN 106609959 A CN106609959 A CN 106609959A
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- China
- Prior art keywords
- semiconductor light
- light source
- row
- backlight
- straight
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/0025—Fastening arrangements intended to retain light sources the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections
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- 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
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/10—Construction
-
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
Abstract
The invention provides a direct type directional backlight source comprising a backlight separation structure which comprises a body and an accommodating cavity formed in the body and provided with an opening; a plurality of reflecting separating members which divide the accommodating cavity into a plurality of sub-cavities are arranged in the accommodating cavity; the backlight separation structure is a metal structure; the side surfaces of the reflecting separating members are reflecting surfaces. The backlight source also comprises semiconductor light source arrays and an optical diffusion sheet. Each semiconductor light source array comprises a single-array substrate and semiconductor light sources distributed on the single-array substrate in the length direction of the single-array substrate; one semiconductor light source array is tightly attached to the inside of each sub-cavity; the single-array substrates are attached to the bottoms of the sub-cavities and are metal substrates; the optical diffusion sheet is arranged at the opening of the accommodating cavity in a covering manner, and is tightly pressed against the sub-cavities. The direct type backlight source capable of independently controlled can solve the technical problem that conventional stereo display apparatuses have dark zones in reality images.
Description
Technical field
The present invention relates to stereo-picture display field, more particularly to a kind of straight-down negative directivity backlight.
Background technology
Bore hole 3D shows that (also known as Auto-stereo display) is following development trend of Display Technique, and the technology adopts disparity map
As the method in spatial multiplexing, to realize the visually-perceptible of human eye depth information image.Correspondingly, left eye is located in left view
Area receives left view difference image, and right eye receives right anaglyph positioned at right eye vision area.Due to horizontal parallax image construction one
To Stereograms, through the syncretizing mechanism of brain so that beholder perceives corresponding depth information in image, so as to shape
Into stereoscopic vision.
At present main flow bore hole 3D Display Technique mainly includes cylindrical lens array (Lenticular), parallax baffle
And three kinds of directivity backlight technology (directional backlight) (Barrier).Wherein it is based on directivity backlight technology
The full HD bore hole 3D display device of multiple views include direct-light-type backlight, lens arra and transmission-type image-display units, the back of the body
The light that light source sends sequentially passes through lens arra and transmission-type image-display units and focuses in specific vision area.
In existing directivity backlight 3 d display device 100 as shown in Figure 1, if each backlight module 110 is included
(120 indications are a certain unit of lens arra in Fig. 1, and 130 indications are figure for dry light-emitting zone unit 111 and not light-emitting zone 112
As display unit is responsible for the part of illumination by backlight 110 and lens 120), luminescence unit 110 and not light-emitting zone 112 are correspondingly
Focus on the vision area unit 141 in corresponding vision area 140 and vision dark space 142, there is provided the Uniform Illumination and the guarantee back of the body of the viewpoint
The directivity of optical transport.Due to there is dark space (as shown in not light-emitting zone 112 in Fig. 1) between backlight module 110, then can cause
Human eye the edge of vision area unit 141 (i.e. shown in 142 in Fig. 1) experience screen intensity it is uneven (screen part it is brighter and
Certain part is dark).Thus, human eye is during transverse shifting, can be through the boundary of images of left and right eyes vision area part.These have a common boundary it
Place is referred to as vision dark space, even if the presence of vision dark space causes human eye on optimal screen viewing distance, also can experience
Dark space on obvious screen, has a strong impact on visual experience.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of straight-down negative directivity backlight, to change
It is apt to the technological deficiency that existing stereoscopic display device has dark space in display image.
In order to achieve the above object, the present invention is employed the following technical solutions：
A kind of straight-down negative directivity backlight, including：
Backlight separation structure, the backlight separation structure includes main body and has open containing cavity located at the one of main body；
The accommodating intracavity is provided with some reflective spacing bodies and the containing cavity is divided into into some sub- cavity volumes；The backlight separation structure is metal
Structure；The two sides of the reflective spacing body are reflective surface；
Semiconductor light source is arranged, including single-row substrate and semiconductor light source
And the semiconductor light source along single-row zig directional spreding on the single-row substrate；Per in individual sub- cavity volume
Semiconductor light source row is closely provided with, the single-row baseplate-laminating is in the bottom of the sub- cavity volume；The single-row substrate is gold
Category substrate；
Optical diffusion sheet, located at the open of the containing cavity in the way of covering, the optics expands the optical diffusion sheet
Discrete piece is close to the sub- cavity volume.
Preferably, the semiconductor light source is classified as an arrays of semiconductor light sources part；
The arrays of semiconductor light sources includes array base palte and semiconductor light source；
The arrays of semiconductor light sources is arranged on the array base palte；
The array base palte is divided into several subregions；Each subregion has string semiconductor light source；
Each subregion is provided with N number of semiconductor light source；
The substrate of each subregion is the single-row substrate, the substrate of each subregion and the semiconductor light source of each subregion
Composition semiconductor light source row.
Preferably, in N number of semiconductor light source of the semiconductor light source row：
N/3=integers；
Source-series per three semiconductor lights, the semiconductor light source connected per three is parallel with one another；
N number of semiconductor light source common-anode, the negative pole of each semiconductor light source is respectively by audion and control circuit for light source
Connection.
Preferably, being provided with slotted eye between two neighboring subregion；
Some reflective separator composition one located at the accommodating intracavity has periodic tooth-shape structure；
Each reflective separator is a teeth portion, and the vertical cross-section perpendicular to the containing cavity bottom of the teeth portion is substantially
In isosceles triangle；Two sides of the teeth portion are provided with high reflecting material electrodeposited coating；
The arrays of semiconductor light sources is sheathed on the reflective spacing body by slotted eye, installed in the accommodating intracavity.
Preferably, the top of the vertical cross-section of the teeth portion is a circular arc, the span of the radius R of the circular arc is
Below 0.25mm.
Preferably, the thickness of the optical diffusion sheet is 0.05mm～1.5mm, transmitance is more than 80%, and mist degree is
More than 80%.
Preferably, also including some light pipes, the light pipe is provided with groove；
The light pipe is corresponded with semiconductor light source row and is embedded in the containing cavity, and the groove covers at described
Semiconductor light source is arranged；
The outer surface of the side wall of the groove of the light pipe is provided with the described high light reflecting membrane as reflective separator.
Preferably, the thickness of the high light reflecting membrane is between 0.05～0.2mm.
Preferably, the thickness of the optical diffusion sheet is between 0.1～1mm.
Preferably, the single-row substrate is aluminium base, the backlight separation structure is aluminum structure.
Compared with prior art, the invention has the advantages that：
By said structure, straight-down negative of the present invention can independent control backlight, it is existing three-dimensional aobvious to improve
Show that equipment has the technological deficiency of dark space in real world images.The directivity that light is propagated when both ensureing that 3D is played, again can be
Uniform illumination is realized when 2D shows.
Description of the drawings
Fig. 1 is the structural representation of prior art；
Fig. 2 is the schematic diagram of straight-down negative directivity backlight of the present invention；
Fig. 3 is the schematic diagram of arrays of semiconductor light sources of the present invention；
Fig. 4 is the structural representation of the pcb board that arrays of semiconductor light sources of the present invention is fitted；
Fig. 5 is the structural representation that backlight of the present invention separates；
Fig. 6 is the generalized section of direct backlight source structure described in the embodiment of the present invention 1；
Fig. 7 is the generalized section of direct backlight source structure described in the embodiment of the present invention 2；
Fig. 8 is the structural representation of the light pipe described in the embodiment of the present invention 2.
In figure：
1-arrays of semiconductor light sources；11—LED；12-slotted eye；13-probe；14-substrate；2-backlight separation structure；
21-containing cavity；211-point groove；22-teeth portion；221-plating high reflecting material；23-light pipe；231-high light reflecting membrane；
232-groove；3-optical diffusion sheet.
In conjunction with accompanying drawing, the invention will be further described with specific embodiment.
Specific embodiment
Embodiment 1
Refering to shown in Fig. 2, straight-down negative directivity backlight of the present invention includes：Arrays of semiconductor light sources 1, backlight point
Every structure 2 and optical diffusion sheet 3.
Refering to shown in Fig. 3 and Fig. 5, arrays of semiconductor light sources 1 includes：Rectangular aluminium base 14 and some it is fitted in aluminium base
Semiconductor light source on plate 14, such as LED11, are said as an example with LED11 in the present embodiment to arrays of semiconductor light sources 1
It is bright.LED11 is located at aluminium base 14 in the way of paster encapsulation；LED11 array arrangements.Aluminium base 14 is by mould punching mode system
It is standby.
The interval of adjacent two row LED11 is all provided with slotted eye 12, each column LED11 and its shape of place substrate 14 on aluminium base 14
Into semiconductor light source row.
Electronic layout's scheme of the LED array in each arrays of semiconductor light sources 1 is：Adopting surface mounted LED 11 33 is connected, often
The LED11 of three series connection is in parallel；Each column LED11 common-anode, the negative pole of each LED11 is respectively by audion and light source control electricity
Road connects, and to realize the light on and off signal of Electronic Control LED11, each column LED11 is connect with the probe 13 on aluminium base 14 as outside
Mouthful, it is adapted to the wiring needs of 3 d display device.
Refering to shown in Fig. 4, backlight separation structure 2 includes main body and has open containing cavity 21 located at the one of main body, holds
Chamber 21 is put for cuboid cavity.Be provided with containing cavity 21 includes some teeth portion with periodic tooth-shape structure, i.e. tooth-shape structure
22, adjacent fingers 22 space between identical.Vertical cross-section of each teeth portion 22 perpendicular to the bottom of the containing cavity 21 be
Isosceles triangle, two sides of each teeth portion 22 are provided with high reflecting material electrodeposited coating, such as aluminum.Some teeth portion 22 are by containing cavity
21 are divided into some points of grooves 211, and the top margin of teeth portion 22 is located at same level with the open edge of containing cavity 21.
Backlight separation structure 2 is made using precision die reverse mould extrusion forming process, and backlight separation structure 2 is extrusion molding
Aluminium section bar.Because backlight separation structure 2 is made up of extrusion forming process, in cooling process, hot melt aluminum can be in teeth portion
There is the trend of flowing downward in 22 top margin, so that the top of the vertical cross-section of teeth portion 22 is a circular arc, the radius R of the circular arc
In below 0.25mm.
Due to the presence of the R values at the top of the vertical cross-section of teeth portion 22 so that per the corresponding optical diffusion sheets of string LED11
Lighting area on 3 front surfaces can not be completely continuous, therefore, optical diffusion sheet 3 has certain thickness, and general control exists
Within 0.05mm～1.5mm, transmitance is more than 80%, mist degree is more than 80%.
Refering to some teeth shown in Fig. 6, on the corresponding backlight separation structure 2 of several slotted eyes 12 of arrays of semiconductor light sources 1
Portion 22, slotted eye 12 is set in teeth portion 22, so that arrays of semiconductor light sources 1 is arranged in containing cavity 21, arrays of semiconductor light sources 1
Aluminium base 14 be close to the bottom of containing cavity 21.Optical diffusion sheet 3 is covered on the notch of containing cavity 21, and optical diffusion sheet 3 is close to
Divide the open edge that the vallecular cavity of groove 211, i.e. optical diffusion sheet 3 are fitted in the containing cavity 21 of backlight separation structure 2 with teeth portion 22
In the plane that deckle is located jointly.Two sides plating high reflecting material of teeth portion 22 so that in the LED of point bottom of groove 211
The luminous energy that light source sends goes out multiple reflections in the side wall of each teeth portion 22, optical diffusion sheet 3 of the last outgoing at top
On, so as to increase light efficiency.
Arrays of semiconductor light sources 1 is provided with slotted eye 12, to facilitate the installation of arrays of semiconductor light sources 1 and accurately be fitted in backlight
The bottom of the containing cavity 21 of separation structure 2.The width of slotted eye 12 is slightly wider than the bottom width of teeth portion 22 (wide 0.5mm), to be adapted to partly lead
Body array of source 1 is fitted tightly over the bottom of containing cavity 21 of the backlight separation structure 2.Point groove 211 of backlight separation structure 2
Bottom width is slightly wider than the width of the substrate 14 of semiconductor light source row, to be adapted to fit.
Embodiment 2
Refering to shown in Fig. 7, straight-down negative directivity backlight of the present invention includes：Arrays of semiconductor light sources 1, backlight point
Every structure 2 and optical diffusion sheet 3.
Refering to shown in Fig. 3 and Fig. 5, arrays of semiconductor light sources 1 includes：Rectangular aluminium base 14 and some laminatings are distributed in
Semiconductor light source on aluminium base 14, such as LED11, are carried out as an example with LED11 in the present embodiment to arrays of semiconductor light sources 1
Explanation；LED11 is located at aluminium base 14 in the way of paster encapsulation；Arrays of semiconductor light sources 1 is arranged.Aluminium base 14 is by mould punching
It is prepared by mode.
Each column LED11 and its place substrate 14 form semiconductor light source row.
Electronic layout's scheme of the LED array in arrays of semiconductor light sources 1 is：Per on string do not have three it is SMD
LED11 connects, and the LED11 connected per three is in parallel；Each column LED11 common-anode, each negative pole corresponds to respectively an audion and connects
The light on and off signal of Electronic Control LED11 is connect, each column LED11 is adapted to solid with the probe 13 on aluminium base 14 as external interface
The wiring of display device needs.
Backlight separation structure 2 is a matrix aluminium section bar, and the depressed area of aluminium section bar is, with open containing cavity 21, to house
The size of the accurate close aluminium base 14 of the bottom size in chamber 21；Arrays of semiconductor light sources 1 inserts containing cavity 21 and is close to containing cavity
21 bottom.Containing cavity 21 is cuboid cavity
Each semiconductor light source row in correspondence arrays of semiconductor light sources 1 are provided with a light pipe 23.The structure of light pipe 23
With reference to shown in Fig. 7, light pipe 23 is cuboid, and the wall outer surface that light pipe 23 has groove 232, groove 232 sticks height instead
Optical thin film 231 (reflexed light film thickness is between 0.05～0.2mm).Light pipe 23 corresponds light pipe with semiconductor light source row
23 are inlaid in matrix position, and light pipe 23 is located on semiconductor light source row with groove 232, the medial surface of groove 232 and half
Space is left between conductor light source row, i.e. the vallecular cavity of groove 232 is larger, facilitate light pipe 23 to install.Adjacent light pipe 23 is tight
Laminating, high light reflecting membrane 231 forms reflective spacing body.
Light pipe 23 laterally the beam overall of arrangement, the width of aluminium base 14, containing cavity 21 width control system it is consistent；Light pipe 23
After loading containing cavity 21, the height of the outer surface of the diapire of groove 232 of each light pipe 23 should be consistent and with containing cavity 21
Open mouth edge be generally aligned in the same plane；Optical diffusion sheet 3 (diffusion sheet thickness is between 0.1～1mm) is fitted in light pipe 23
The outer surface of the diapire of groove 232 and the open edge of containing cavity 21, are finally packaged into directivity backlight device of the present invention
Part.
Light pipe 23 can be prepared using injection molding process；The wall outer surface patch of the groove 232 of light pipe 23 is high reflective
Thin film 231, to reach reflection using the luminous energy of corresponding LED11 row and the effect of the luminous energy for intercepting the row of adjacent LED 11；It is guide-lighting
The groove 232 of pipe 23 is covered on the unit of adopting surface mounted LED 11 of semiconductor light source row, it is ensured that the compactness of encapsulation and anti-leak-stopping
Light.
Semiconductor light source can be LED light source, or Organic Light Emitting Diode (OrganicLight- in the present invention
Emitting Diode, OLED) etc. can realize the semiconductor light source category of miniaturization, high packaging density.The backlight battle array
Row on off state can realize single-row independent control.
Backlight separation structure 2, arrays of semiconductor light sources 1 and optical diffusion sheet 3 in the present invention is by being brought into close contact mode
One group of backlight is assembled into, realizes that function is as follows：The luminous surface uniformity of array of source full-gear reaches more than 80%, and light source is every
String can be actually needed according to stereo display and control its light on and off, and light source string lights the luminous energy crosstalk of back lighting optical diffusion
Accounting to adjacent area is less than 5%.
Above-mentioned embodiment is the invention is not limited in, if to various changes of the invention or modification without departing from the present invention
Spirit and scope, if these change and modification belong to the present invention claim and equivalent technologies within the scope of, then this
It is bright to be also intended to comprising these changes and change.
Claims (10)
1. a kind of straight-down negative directivity backlight, it is characterised in that include：
Backlight separation structure, the backlight separation structure includes main body and has open containing cavity located at the one of main body；It is described
Accommodating intracavity is provided with some reflective spacing bodies and the containing cavity is divided into into some sub- cavity volumes；The backlight separation structure is metal knot
Structure；The two sides of the reflective spacing body are reflective surface；
Semiconductor light source is arranged, including single-row substrate and along single-row zig directional spreding on the single-row substrate half
Conductor light source；Semiconductor light source row is provided with per individual sub- cavity volume inner close fitting, the single-row baseplate-laminating is in the sub- cavity volume
Bottom；The single-row substrate is metal basal board；
Optical diffusion sheet, the optical diffusion sheet is in the way of covering located at open, the optical diffusion sheet of the containing cavity
It is close to the sub- cavity volume.
2. straight-down negative directivity backlight according to claim 1, it is characterised in that：
The semiconductor light source is classified as an arrays of semiconductor light sources part；
The arrays of semiconductor light sources includes array base palte and semiconductor light source；
The arrays of semiconductor light sources is arranged on the array base palte；
The array base palte is divided into several subregions；Each subregion has string semiconductor light source；
Each subregion is provided with N number of semiconductor light source；
The substrate of each subregion is the single-row substrate, the substrate of each subregion and the semiconductor light source composition of each subregion
Semiconductor light source row.
3. straight-down negative directivity backlight according to claim 2, it is characterised in that：
In N number of semiconductor light source of the semiconductor light source row：
N/3=integers；
Source-series per three semiconductor lights, the semiconductor light source connected per three is parallel with one another；
N number of semiconductor light source common-anode, the negative pole of each semiconductor light source is connected respectively by audion with control circuit for light source.
4. the straight-down negative directivity backlight according to Claims 2 or 3, it is characterised in that：
Slotted eye is provided between two neighboring subregion；
Some reflective separator composition one located at the accommodating intracavity has periodic tooth-shape structure；
Each reflective separator is a teeth portion, the vertical cross-section perpendicular to the containing cavity bottom of the teeth portion substantially in etc.
Lumbar triangle shape；Two sides of the teeth portion are provided with high reflecting material electrodeposited coating；
The arrays of semiconductor light sources is sheathed on the reflective spacing body by slotted eye, installed in the accommodating intracavity.
5. straight-down negative directivity backlight according to claim 4, it is characterised in that：The top of the vertical cross-section of the teeth portion
Portion is a circular arc, and the span of the radius R of the circular arc is below 0.25mm.
6. straight-down negative directivity backlight according to claim 5, it is characterised in that：The thickness of the optical diffusion sheet is
0.05mm～1.5mm, transmitance is more than 80%, and mist degree is more than 80%.
7. the straight-down negative directivity backlight according to Claims 2 or 3, it is characterised in that：
Also include some light pipes, the light pipe is provided with groove；
The light pipe and semiconductor light source row are corresponded and are embedded in the containing cavity, and the groove is covered at described partly leads
Body light source row；
The outer surface of the side wall of the groove of the light pipe is provided with the described high light reflecting membrane as reflective separator.
8. straight-down negative directivity backlight according to claim 7, it is characterised in that：The thickness of the high light reflecting membrane exists
Between 0.05～0.2mm.
9. straight-down negative directivity backlight according to claim 7, it is characterised in that：The thickness of the optical diffusion sheet exists
Between 0.1～1mm.
10. straight-down negative directivity backlight according to claim 8, it is characterised in that：The single-row substrate is aluminium base,
The backlight separation structure is aluminum structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228382.9A CN106609959A (en) | 2016-12-27 | 2016-12-27 | A direct type directional backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228382.9A CN106609959A (en) | 2016-12-27 | 2016-12-27 | A direct type directional backlight source |
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| Publication Number | Publication Date |
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| CN106609959A true CN106609959A (en) | 2017-05-03 |
Family
ID=58636816
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611228382.9A Pending CN106609959A (en) | 2016-12-27 | 2016-12-27 | A direct type directional backlight source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504402A (en) * | 2017-08-30 | 2017-12-22 | 厦门天马微电子有限公司 | Back light and display device |
| CN108445628A (en) * | 2018-02-28 | 2018-08-24 | 厦门天马微电子有限公司 | Backing structure and display device for mounting on vehicle |
| CN109058912A (en) * | 2018-06-07 | 2018-12-21 | 伟志光电（深圳）有限公司 | A kind of straight-down negative multi-section display backlight |
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| CN102798043A (en) * | 2012-08-02 | 2012-11-28 | 青岛海信电器股份有限公司 | Direct-lighting type backlight module |
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| CN105158969A (en) * | 2015-08-18 | 2015-12-16 | 深圳市华星光电技术有限公司 | Liquid crystal display device and backlight module set |
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| CN107504402B (en) * | 2017-08-30 | 2019-11-22 | 厦门天马微电子有限公司 | Back light and display device |
| CN108445628A (en) * | 2018-02-28 | 2018-08-24 | 厦门天马微电子有限公司 | Backing structure and display device for mounting on vehicle |
| CN109058912A (en) * | 2018-06-07 | 2018-12-21 | 伟志光电（深圳）有限公司 | A kind of straight-down negative multi-section display backlight |
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