CN106019713A - Collimation backlight source and display device - Google Patents
Collimation backlight source and display device Download PDFInfo
- Publication number
- CN106019713A CN106019713A CN201610608940.8A CN201610608940A CN106019713A CN 106019713 A CN106019713 A CN 106019713A CN 201610608940 A CN201610608940 A CN 201610608940A CN 106019713 A CN106019713 A CN 106019713A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- collimated
- collimated backlight
- light guide
- 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.)
- Pending
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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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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 provides a collimation backlight source and a display device. The collimation backlight source comprises a parallel light providing unit and further comprises a light adjusting unit. The parallel light providing unit is located on the light inlet side of the light adjusting unit and used for providing parallel incident light for the light adjusting unit. The light adjusting unit is used for carrying out direction adjustment on the parallel incident light so that collimated light can be transmitted out of the light outlet side of the light adjusting unit. According to the collimation backlight source, by arranging the light adjusting unit, light outlet direction adjustment can be carried out on the parallel incident light so that the collimated light can be transmitted out of the light outlet side of the light adjusting unit; thus, the collimation backlight source can provide collimated light, and accordingly a technical guarantee is provided for anti-peep display of a display component.
Description
Technical field
The present invention relates to Display Technique field, in particular it relates to a kind of collimated backlight and
Display device.
Background technology
Along with the fast development of flat panel display, its indication range and application scenarios be not
Disconnected expansion.The application scenarios that peep-proof shows arises at the historic moment, and in such a scenario, peep-proof shows
Show the viewing experience that enough secrets can be provided to observer, be greatly improved it special aobvious
Show the secret display effect in field.
Due to collimated backlight provide backlight can along certain specific direction outgoing, so
Peep-proof display product typically requires and provides collimated backlight to display floater.
Current existing back light source technique is mainly at the light guide plate of side light-in backlight
Bottom surface lattice-like pattern is set, this lattice-like pattern can make to be irradiated to light thereon and send out
Raw diffuse-reflectance, thus destroy incident ray total reflection in light guide plate, and then achieve
Light outgoing from light guide plate, but its light direction is divergent shape, it is impossible to realize standard
The outgoing of direct light line.
Summary of the invention
The present invention is directed to above-mentioned technical problem present in prior art, it is provided that a kind of collimation
Backlight and display device.This collimated backlight can carry out light direction to parallel input light
Regulation so that it is light emission side injection collimated ray, so that this collimated backlight achieves standard
The offer of direct light line, and then show for the peep-proof of display device and provide technology guarantee.
The present invention provides a kind of collimated backlight, provides unit including directional light, also includes
Dimming unit, described directional light provides unit to be positioned at the incident side of described dimming unit, uses
In providing parallel input light to described dimming unit；Described dimming unit is for described flat
Row incident illumination travel direction regulates, so that its light emission side injection collimated ray.
Preferably, described dimming unit includes light guide plate and catoptric arrangement, and described reflection is tied
Structure is arranged on the bottom surface relative with its exiting surface of described light guide plate, described parallel incidence
Light is for from the incident sideways of described light guide plate；
The angle of emergence that described parallel input light is incident in described light guide plate and described leaded light
The refractive index of plate meets formula: n × sin (90-a) >=1；Wherein, n be described in lead
The refractive index of tabula rasa, a is the outgoing that described parallel input light is incident in described light guide plate
Angle；
Described catoptric arrangement is for reflexing to described light guide plate by light incident thereon
Described exiting surface so that penetrating described collimated ray on described exiting surface.
Preferably, described catoptric arrangement is embedded in described light guide plate, described catoptric arrangement
The first angle, described first angle is become to be more than between reflecting surface and the bottom surface of described light guide plate
0 ° and less than 90 ° of-a.
Preferably, described catoptric arrangement includes multiple minor structure, and multiple described minor structures are arranged
Cloth is array.
Preferably, along the direction of the incident side away from described light guide plate, described minor structure
Arrangement density is gradually increased.
Preferably, described minor structure is reflecting plate.
Preferably, described minor structure is wedge shape catoptric arrangement.
Preferably, the shape of described minor structure includes bulk or strip.
Preferably, described directional light provides unit to include light source and light conversion element, institute
Stating light source and the described corresponding setting of light conversion element, described light source is used for sending and dissipates
Light；Described light conversion element is used for being emitted onto described divergent rays thereon conversion
For directional light.
Preferably, described light conversion element includes convex lens, concavees lens or concave mirror.
Preferably, also include that reflecting layer, described reflecting layer are arranged on the remote of described light guide plate
From the side of its exiting surface, for reflecting being irradiated to light thereon.
The present invention also provides for a kind of display device, including above-mentioned collimated backlight.
Beneficial effects of the present invention: collimated backlight provided by the present invention, by arranging
Dimming unit, can carry out light direction regulation to parallel input light so that it is light emission side penetrates
Collimated ray, so that this collimated backlight achieves the offer of collimated ray, Jin Erwei
The peep-proof of display device shows that the technology that provides ensures.
Display device provided by the present invention, by using above-mentioned collimated backlight, makes this
Display device is capable of the display towards different directions, so that this display device realizes
Peep-proof shows.
Accompanying drawing explanation
Fig. 1 is the structural representation of collimated backlight in the embodiment of the present invention 1；
Fig. 2 is the structure top view of dimming unit in Fig. 1；
Fig. 3 is the another kind of structure top view of dimming unit in Fig. 1；
Fig. 4 is the structural representation of collimated backlight in the embodiment of the present invention 2.
Description of reference numerals therein:
1. directional light provides unit；11. light sources；12. light conversion elements；2. light modulation is single
Unit；21. light guide plates；211. exiting surface；212. bottom surface；213. side；22. reflection knots
Structure；221. reflecting surface；220. minor structure；3. reflecting layer.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, below
In conjunction with the drawings and specific embodiments to a kind of collimated backlight provided by the present invention and
Display device is described in further detail.
Embodiment 1:
The present embodiment provides a kind of collimated backlight, as it is shown in figure 1, include that directional light carries
For unit 1, also including dimming unit 2, directional light provides unit 1 to be positioned at dimming unit
The incident side of 2, for providing parallel input light to dimming unit 2；Dimming unit 2 is used
In parallel input light travel direction is regulated, so that its light emission side injection collimated ray.
By arranging dimming unit 2, parallel input light can be carried out light direction regulation,
Its light emission side is made to penetrate collimated ray, so that this collimated backlight achieves collimated ray
Offer, and then show for the peep-proof of display device and provides technology guarantee.
In the present embodiment, dimming unit 2 includes light guide plate 21 and catoptric arrangement 22, instead
Penetrate structure 22 and be arranged on the bottom surface 212 relative with its exiting surface 211 of light guide plate 21
On, parallel input light is for incident from the side 213 of light guide plate 21.Parallel input light
The angle of emergence being incident in light guide plate 21 meets formula with the refractive index of light guide plate 21: n
×sin(90-a)≥1；Wherein, n is the refractive index of light guide plate 21, a be parallel enter
Penetrate the angle of emergence that light is incident in light guide plate 21.Catoptric arrangement 22 will be for inciding it
On light reflex to the exiting surface 211 of light guide plate 21, so that penetrating on exiting surface 211
Go out collimated ray.
Wherein, n × sin (90-a) >=1 can ensure that enter in light guide plate 21 parallel
Light is totally reflected, so that being incident to light guide plate from the side 213 of light guide plate 21
Parallel rays in 21 can along light guide plate 21 bearing of trend propagate, and then make parallel enter
Penetrate luminous energy and spread all over whole light guide plate 21, in order to finally guarantee light guide plate 21 whole go out light
Light is had to penetrate on face 211.
In the present embodiment, catoptric arrangement 22 is embedded in light guide plate 21, catoptric arrangement 22
Reflecting surface 221 and the bottom surface 212 of light guide plate 21 between become the first angle b, first
Angle b is more than 0 ° and less than 90 ° of-a.It is arranged such, this collimated backlight can be made
Export the collimated ray of various different light direction, the collimation that i.e. this collimated backlight provides
Angle between light direction and the exiting surface 211 of light guide plate 21 of light can be
Arbitrarily adjust between 0 °-180 °, thus be that the peep-proof realizing each different directions shows
The technology that provides ensures.
In the present embodiment, as in figure 2 it is shown, catoptric arrangement 22 includes multiple minor structure 220,
Multiple minor structures 220 are arranged in array.This array is uniformly arranged, the son being arranged in array
Structure 220 can be by the parallel rays that is incident in light guide plate 21 equably to light guide plate
The exiting surface 211 of 21 reflects, so that can go out on the exiting surface 211 of light guide plate 21
Penetrate uniform collimated ray.
It should be noted that along the direction of the incident side away from light guide plate 21, it is also possible to
The arrangement density making minor structure 220 is gradually increased.Owing to incident ray propagates to light guide plate
21 have a light losing away from one end of incident side, and from incident side more away from, light line loss
Lose the biggest, so that the arrangement density of minor structure 220 is along with the increasing away from incident side distance
Increase greatly, it is possible to make up the light guide plate 21 light losing away from incident side one end, from
And make the brightness of the collimated ray from light guide plate 21 exiting surface 211 outgoing more uniformly,
And then improve the backlight effect of this collimated backlight.
In the present embodiment, minor structure 220 is wedge shape catoptric arrangement.The shape of minor structure 220
Shape is block, i.e. wedge.
It should be noted that the shape of minor structure 220 can also be strip, i.e. wedge-shaped bar
(as shown in Figure 3) or other shapes, as long as being able to ensure that and being incident in light guide plate 21
Parallel rays total reflection during can be incident in minor structure 220.
In the present embodiment, as it is shown in figure 1, directional light provides unit 1 to include light source 11
With light conversion element 12, light source 11 and the corresponding setting of light conversion element 12,
Light source 11 is used for sending divergent rays；Light conversion element 12 is used for being emitted onto it
Divergent rays be converted to directional light.
Wherein, light conversion element 12 is convex lens.It should be noted that light turns
Changing element 12 can also be concavees lens or concave mirror.Convex lens, concavees lens and concave mirror
All there is the performance that divergent rays is converted to directional light.
In the present embodiment, collimated backlight also includes that reflecting layer 3, reflecting layer 3 are arranged on
The side away from its exiting surface 211 of light guide plate 21, for being irradiated to light thereon
Line reflects.The setting in reflecting layer 3, can will be located in the aobvious of collimated backlight light emission side
Show that the collimated ray that panel reflects reflects, to improve what collimated backlight provided
The utilization rate of collimated ray.
Embodiment 2:
The present embodiment provides a kind of collimated backlight, as different from Example 1, such as figure
Shown in 4, minor structure 220 is reflecting plate.
In the present embodiment collimated backlight other structures and arrange and phase in embodiment 1
With, here is omitted.
The beneficial effect of embodiment 1-2: the collimated backlight that embodiment 1-2 is provided,
By arranging dimming unit, parallel input light can be carried out light direction regulation so that it is go out
Light side injection collimated ray, so that this collimated backlight achieves carrying of collimated ray
Confession, and then show for the peep-proof of display device and provide technology guarantee.
Embodiment 3:
The present embodiment provides a kind of display device, including embodiment 1-2 in any one
Collimated backlight.
By using embodiment 1-2 collimated backlight in any one, this display is made to fill
Put the display being capable of towards different directions, so that this display device achieves peep-proof
Display.
Display device provided by the present invention can be, liquid crystal panel, oled panel,
LCD TV, OLED TV, display, mobile phone, navigator etc. are any has display
The product of function or parts.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present
And the illustrative embodiments used, but the invention is not limited in this.For ability
For those of ordinary skill in territory, in the situation without departing from spirit and substance of the present invention
Under, various modification and improvement can be made, these modification and improvement are also considered as the present invention's
Protection domain.
Claims (12)
1. a collimated backlight, provides unit including directional light, it is characterised in that
Also including dimming unit, described directional light provides what unit was positioned at described dimming unit to enter light
Side, for providing parallel input light to described dimming unit；Described dimming unit is for right
Described parallel input light travel direction regulates, so that its light emission side injection collimated ray.
Collimated backlight the most according to claim 1, it is characterised in that described
Dimming unit includes that light guide plate and catoptric arrangement, described catoptric arrangement are arranged on described leaded light
On the bottom surface relative with its exiting surface of plate, described parallel input light is for from described leaded light
The incident sideways of plate；
The angle of emergence that described parallel input light is incident in described light guide plate and described leaded light
The refractive index of plate meets formula: n × sin (90-a) >=1；Wherein, n be described in lead
The refractive index of tabula rasa, a is the outgoing that described parallel input light is incident in described light guide plate
Angle；
Described catoptric arrangement is for reflexing to described light guide plate by light incident thereon
Described exiting surface so that penetrating described collimated ray on described exiting surface.
Collimated backlight the most according to claim 2, it is characterised in that described
Catoptric arrangement is embedded in described light guide plate, the reflecting surface of described catoptric arrangement and described leaded light
Becoming the first angle between the bottom surface of plate, described first angle is more than 0 ° and less than 90 °
-a。
Collimated backlight the most according to claim 3, it is characterised in that described
Catoptric arrangement includes multiple minor structure, and multiple described minor structures are arranged in array.
Collimated backlight the most according to claim 4, it is characterised in that along remote
From the direction of the incident side of described light guide plate, the arrangement density of described minor structure gradually increases
Greatly.
Collimated backlight the most according to claim 4, it is characterised in that described
Minor structure is reflecting plate.
Collimated backlight the most according to claim 4, it is characterised in that described
Minor structure is wedge shape catoptric arrangement.
8. according to the collimated backlight described in claim 6 or 7, it is characterised in that
The shape of described minor structure includes bulk or strip.
Collimated backlight the most according to claim 1, it is characterised in that described
Directional light provides unit to include light source and light conversion element, described light source and described light
The corresponding setting of conversion element, described light source is used for sending divergent rays；Described light turns
Change element and be converted to directional light for being emitted onto described divergent rays thereon.
Collimated backlight the most according to claim 9, it is characterised in that institute
State light conversion element and include convex lens, concavees lens or concave mirror.
11. collimated backlight according to claim 2, it is characterised in that also
Including reflecting layer, described reflecting layer be arranged on described light guide plate away from the one of its exiting surface
Side, for reflecting being irradiated to light thereon.
12. 1 kinds of display devices, it is characterised in that include that claim 1-11 is any
One described collimated backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608940.8A CN106019713A (en) | 2016-07-28 | 2016-07-28 | Collimation backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608940.8A CN106019713A (en) | 2016-07-28 | 2016-07-28 | Collimation backlight source and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106019713A true CN106019713A (en) | 2016-10-12 |
Family
ID=57114886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610608940.8A Pending CN106019713A (en) | 2016-07-28 | 2016-07-28 | Collimation backlight source and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106019713A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405937A (en) * | 2016-11-16 | 2017-02-15 | 深圳市华星光电技术有限公司 | Backlight module |
| CN107195248A (en) * | 2017-07-20 | 2017-09-22 | 京东方科技集团股份有限公司 | Optical module and display device |
| CN107942431A (en) * | 2018-01-05 | 2018-04-20 | 京东方科技集团股份有限公司 | Collimated backlight, display device and its photopolymer layer preparation method |
| CN108153054A (en) * | 2018-01-03 | 2018-06-12 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN108897092A (en) * | 2018-09-03 | 2018-11-27 | 合肥京东方光电科技有限公司 | Light guide structure and preparation method thereof, light source assembly and display device |
| CN108983447A (en) * | 2017-06-02 | 2018-12-11 | 群创光电股份有限公司 | Show equipment |
| US11281018B2 (en) | 2018-11-22 | 2022-03-22 | Hefei Boe Optoelectronics Technology Co., Ltd. | Light collimating thin film, edge-type backlight module, liquid crystal display device and micro light emitting diode display device |
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| CN106405937A (en) * | 2016-11-16 | 2017-02-15 | 深圳市华星光电技术有限公司 | Backlight module |
| CN106405937B (en) * | 2016-11-16 | 2019-08-13 | 深圳市华星光电技术有限公司 | Backlight module |
| CN108983447A (en) * | 2017-06-02 | 2018-12-11 | 群创光电股份有限公司 | Show equipment |
| CN108983447B (en) * | 2017-06-02 | 2021-07-20 | 群创光电股份有限公司 | Display device |
| CN107195248A (en) * | 2017-07-20 | 2017-09-22 | 京东方科技集团股份有限公司 | Optical module and display device |
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| CN107942431A (en) * | 2018-01-05 | 2018-04-20 | 京东方科技集团股份有限公司 | Collimated backlight, display device and its photopolymer layer preparation method |
| CN108897092A (en) * | 2018-09-03 | 2018-11-27 | 合肥京东方光电科技有限公司 | Light guide structure and preparation method thereof, light source assembly and display device |
| US11281018B2 (en) | 2018-11-22 | 2022-03-22 | Hefei Boe Optoelectronics Technology Co., Ltd. | Light collimating thin film, edge-type backlight module, liquid crystal display device and micro light emitting diode display device |
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Application publication date: 20161012 |
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| RJ01 | Rejection of invention patent application after publication |