CN104501096A - Reflecting transmission device and laser backlight source with same - Google Patents
Reflecting transmission device and laser backlight source with same Download PDFInfo
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- CN104501096A CN104501096A CN201410787101.8A CN201410787101A CN104501096A CN 104501096 A CN104501096 A CN 104501096A CN 201410787101 A CN201410787101 A CN 201410787101A CN 104501096 A CN104501096 A CN 104501096A
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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
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
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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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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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
- G02F1/133553—Reflecting elements
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
- G02F1/133557—Half-mirrors
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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)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a reflecting transmission device and a laser backlight source with the same. The reflecting transmission device comprises reflecting transmission mechanisms and a totally reflecting mirror, wherein the reflecting transmission mechanisms and the totally reflecting mirror are arranged in sequence along an incidence light beam path and form include angles ranging from 40 degrees to 50 degrees with the incidence light beam path. The incidence light beam is reflected by the reflecting transmission mechanisms and the totally reflecting mirror in sequence to form a reflecting light beam in equal light intensity. The reflecting transmission device is applied in the laser backlight source to uniformly form a surface light source. Furthermore, in order to improve utilization rate of light, a reflector plate and a beam expanding mirror can be applied. Compared with other laser backlight sources, the reflecting transmission device can split light emitted from laser modules so as to provide multiple beams of incidence light, the number of the laser modules is greatly lowered, and cost is reduced. With no need of designing the structure of a scattering rod, design difficulty is greatly reduced.
Description
Technical field
The present invention relates to backlight, particularly relate to a kind of reflection and transmission device and the laser backlight with this reflection and transmission device.
Background technology
In liquid crystal display, because liquid crystal molecule itself is not luminous, so need extra equipment for it provides light source.Backlight is positioned at liquid crystal display a kind of light source behind, and its illumination effect will directly have influence on the visual effect of liquid crystal display.In the design of backlight, selecting of light source is very important, which determines the photoelectric parameters such as the power consumption of backlight, brightness, color, also determines service condition and the service life of backlight.Laser display, is the technology of new generation after white and black displays, colored display, numerical monitor, is called as " revolution in human vision history ", has the features such as gamut range is wide, life-span length, energy-conserving and environment-protective.Backlight of the prior art has two kinds usually, i.e. direct-light-type backlight and side-edge type backlight.If adopt LASER Light Source to provide incident light to backlight, be so that direct-light-type backlight or side-edge type backlight all need multiple LASER Light Source, the cost of backlight can be caused so higher, and adopt the structure of scattering rod, design is complicated.
Summary of the invention
Goal of the invention: the object of this invention is to provide that a kind of cost is lower, the reflection and transmission device of simplicity of design and there is the laser backlight of this reflection and transmission device.
Technical scheme: a kind of reflection and transmission device of the present invention, comprises the reflection and transmission mechanism and total reflective mirror that arrange in turn along incident beam light path, and reflection and transmission mechanism and total reflective mirror are all 40 ° ~ 50 ° angles with incident beam; Incident beam via after reflection and transmission mechanism and total reflective mirror reflection, forms the folded light beam that luminous intensity is equal successively.Lay a good foundation for forming uniform backlight.
Described reflection and transmission mechanism comprises n the semi-transparent semi-reflecting lens set gradually, and when light beam is incident or be transmitted to i-th semi-transparent semi-reflecting lens surface, light beam by the ratio reflected is
residue light beam continues along former incident direction transmission, wherein, and n>=1,1≤i≤n.
The direction contrary with described folded light beam is provided with reflector plate, and reflector plate is vertical with folded light beam.Be used for increasing the utilization ratio of light.
The light path of described folded light beam is provided with beam expanding lens, and beam expanding lens is vertical with folded light beam, and beam expanding lens and described reflection and transmission mechanism and described total reflective mirror one_to_one corresponding.Beam expanding lens expands light.
Described beam expanding lens comprises convex lens or concavees lens.
A kind of laser backlight of the present invention, comprises any one reflection and transmission device above-mentioned, also comprises laser module, backboard, diffuser plate and blooming; Described in several, reflection and transmission device is fixed on backboard in parallel to each other, described incident beam is provided by laser module, after the reflection of each reflection and transmission mechanism and total reflective mirror in the described reflection and transmission device be parallel to each other, form the folded light beam that multi-beam intensity is equal, folded light beam incides on diffuser plate and blooming, forming surface light source.
Described laser module is multiple, and the light beam incidence being arranged on each reflection and transmission device be parallel to each other is sentenced and provided incident beam.
Described laser module is 1, in the light beam incident direction of the described reflection and transmission device be parallel to each other, an independent reflection and transmission device is also set, laser module provides incident beam for independent reflection and transmission device, incident beam is divided into the equal folded light beam of multi-beam intensity by independent reflection and transmission device, and folded light beam is as the incident beam of each reflection and transmission device be parallel to each other.
The second laser backlight of the present invention, comprises any one reflection and transmission device above-mentioned, also comprises laser module, backboard, light guide plate and blooming; Described reflection and transmission device is fixed on backboard, described reflection and transmission device and backboard are all arranged on the side of light guide plate, there is provided incident beam to described reflection and transmission device by laser module, after the reflection of each reflection and transmission mechanism and total reflective mirror in described reflection and transmission device, form the folded light beam that multi-beam intensity is equal, folded light beam incides on light guide plate and blooming, forming surface light source.
Described reflection and transmission device is fixed on backboard by fixture.
Beneficial effect: compared with prior art, present invention employs the structural principle of speculum, carrying out light splitting by reflection and transmission device to the light that laser module sends provides more incident light, greatly reduces the quantity of laser module, reduce cost, simplify design; And do not need the structure designing scattering rod, greatly reduce design difficulty.
Accompanying drawing explanation
Fig. 1 is the structural representation of reflection and transmission device of the present invention;
Fig. 2 is the reflection and transmission apparatus structure schematic diagram in reflection and transmission device of the present invention with beam expanding lens and reflector plate;
Fig. 3 is a kind of fixed form of reflection and transmission device in laser backlight of the present invention;
Fig. 4 is the side view that the present invention has direct-light-type backlight in the laser backlight of this reflection and transmission device;
Fig. 5 is a kind of light source presentation mode that the present invention has direct-light-type backlight in the laser backlight of this reflection and transmission device;
Fig. 6 is the another kind of light source presentation mode that the present invention has direct-light-type backlight in the laser backlight of this reflection and transmission device;
Fig. 7 is the structural representation that the present invention has side-edge type backlight in the laser backlight of this reflection and transmission device.
Detailed description of the invention
Below in conjunction with accompanying drawing, further illustrate technical scheme of the present invention by detailed description of the invention.
Reflection and transmission device of the present invention, comprises the reflection and transmission mechanism and total reflective mirror 12 that arrange in turn along incident beam L1 light path, and reflection and transmission mechanism and total reflective mirror 12 are all that 40 ° ~ 50 ° angles are placed with incident beam L1.To have the reflection and transmission device of five reflection and transmission mechanisms and a total reflective mirror 12 in the present embodiment, reflection and transmission mechanism and total reflective mirror 12 are 45 ° with the angle of incident beam L1.As shown in Figure 1, five reflection and transmission mechanisms and a total reflective mirror 12 are arranged in turn along incident beam L1 light path, and total reflective mirror 12 is arranged on finally.
Above-mentioned reflection and transmission mechanism comprises n semi-transparent semi-reflecting lens, must meet following characteristic:
When light beam is incident or be transmitted to i-th semi-transparent semi-reflecting lens surface, light beam by the ratio reflected is
residue light beam continues along former incident direction transmission, wherein n>=1,1≤i≤n.
Here n is 5, and as shown in Figure 1, when incident beam L1 is incident to first semi-transparent semi-reflecting lens 111 surface, have the light beam of 1/6 to be reflected, the light beam of 5/6 is transmitted through second semi-transparent semi-reflecting lens 112; When light beam when 5/6 is transmitted through second semi-transparent semi-reflecting lens 112 surface, have 5/6 be multiplied by 1/5 that is 1/6 light beam reflected, 5/6 be multiplied by 4/5 that is 4/6 light beam be transmitted through the 3rd semi-transparent semi-reflecting lens 113; When light beam when 4/6 is transmitted through the 3rd semi-transparent semi-reflecting lens 113 surface, have 4/6 be multiplied by 1/4 that is 1/6 light beam reflected, 4/6 be multiplied by 3/4 that is 3/6 light beam be transmitted through the 4th semi-transparent semi-reflecting lens 114; When light beam when 3/6 is transmitted through the 4th semi-transparent semi-reflecting lens 114 surface, have 3/6 be multiplied by 1/3 that is 1/6 light beam reflected, 3/6 be multiplied by 2/3 that is 2/6 light beam be transmitted through the 5th semi-transparent semi-reflecting lens 115; When light beam when 2/6 is transmitted through the 5th semi-transparent semi-reflecting lens 115 surface, have 2/6 be multiplied by 1/2 that is 1/6 light beam reflected, 2/6 be multiplied by 1/2 that is 1/6 light beam be transmitted through total reflective mirror 12; When light beam when 1/6 is transmitted through total reflective mirror 12 surface, the light beam of 1/6 is all reflected.Therefore, when incident beam L1 is incident to reflection and transmission device, the folded light beam L2 that six bundle luminous intensities are equal being formed, laying a good foundation for forming uniform backlight.
In order to increase the utilization rate of light further, reflection and transmission device can also comprise a reflector plate 13, and it is arranged on the direction contrary with folded light beam L2, and vertical with folded light beam L2, as shown in Figure 2.
In order to expand folded light beam L2 further, reflection and transmission device further comprises six beam expanding lens, these six beam expanding lens correspond respectively to five reflection and transmission mechanisms and a total reflective mirror 12, each beam expanding lens 14 is arranged in the light path of folded light beam L2, and vertical with folded light beam L2, as shown in Figure 2.
Beam expanding lens 14 can comprise convex lens or concavees lens, to realize the function that light expands.
Fig. 3 gives a kind of fixed form of reflection and transmission device in laser backlight, namely the reflection and transmission mechanism in reflection and transmission device, total reflective mirror 12 and reflector plate 13 is all fixed in backboard 3.Wherein, reflection and transmission mechanism is all connected with backboard 3 by fixture 31 with total reflective mirror 12.Reflection and transmission mechanism can be connected with fixture 31 by glue, screw or other modes with total reflective mirror 12.
Common laser backlight has two kinds---direct-light-type backlight and side-edge type backlight.These two kinds of each have their own advantages of backlight, all often use in liquid crystal display.Here situation about to be applied in respectively by reflection and transmission device of the present invention in direct-light-type backlight and side-edge type backlight is provided:
Fig. 4 gives a kind of side view of direct-light-type backlight, and it comprises laser module 2, reflection and transmission mechanism, total reflective mirror 12, reflector plate 13, beam expanding lens 14, diffuser plate 4 and blooming 5.Laser module 2 sends incident beam L1, the folded light beam L2 that six bundle luminous intensities are equal is formed after the reflection of reflection and transmission mechanism and total reflective mirror 12, often restraint folded light beam L2 to expand through corresponding beam expanding lens 14 again, be finally evenly distributed on diffuser plate 4 and blooming 5.
For direct-light-type backlight, if only with single reflection and transmission device, the light beam so provided very little, is also unfavorable for forming uniform area source.Therefore, direct-light-type backlight often not only comprises single reflection and transmission device, but comprises multiple reflection and transmission device parallel to each other.Each reflection and transmission device needs to provide a branch of incident beam L1.Here the mode that two kinds provide incident beam L1 is provided: respectively as shown in Figure 5 and Figure 6.
As shown in Figure 5, multiple reflection and transmission device parallel to each other is fixed on backboard 3, and each reflection and transmission device has a laser module 2 corresponding with it, to provide the incident beam L1 of each reflection and transmission device.In this case the number of laser module 2 is identical with the number of reflection and transmission device.
As shown in Figure 6, multiple reflection and transmission device parallel to each other is fixed on backboard 3, another independent reflection and transmission device is also fixed on backboard 3, and each reflection and transmission mechanism and total reflective mirror 12 are corresponding with each parallel reflection and transmission device respectively in this independent reflection and transmission device, the incident beam L3 of the reflection and transmission device providing this independent by a laser module 2, incident beam L3 is divided into the equal folded light beam of multi-beam intensity by independent reflection and transmission device, is used as the incident beam L1 of each parallel reflection and transmission device.In this case only a laser module 2 is needed.
Reflection and transmission device of the present invention also can be applied in side-edge type backlight, as shown in Figure 7.A reflection and transmission device is arranged on the side of light guide plate 6, there is provided incident beam L1 to this reflection and transmission device with a laser module 2, after the reflection successively of each reflection and transmission mechanism and total reflective mirror 12 in reflection and transmission device, form the folded light beam L2 that six bundle luminous intensities are equal, folded light beam L2 is incident in light guide plate 6, and light guide plate 6 is converted to area source light.In this case also only a laser module 2 is needed.
No matter reflection and transmission application of installation of the present invention in the backlight, is direct-light-type backlight or side-edge type backlight, effectively can reduces the quantity of laser module 2, reduce costs, simplified design.And do not need the structure designing scattering rod, greatly reduce design difficulty.
Claims (10)
1. a reflection and transmission device, it is characterized in that: comprise the reflection and transmission mechanism and total reflective mirror (12) that arrange in turn along incident beam (L1) light path, reflection and transmission mechanism and total reflective mirror (12) all with incident beam (L1) in 40 ° ~ 50 ° angles; Incident beam (L1) via after reflection and transmission mechanism and total reflective mirror (12) reflection, forms the folded light beam (L2) that luminous intensity is equal successively.
2. reflection and transmission device according to claim 1, is characterized in that: described reflection and transmission mechanism comprises n the semi-transparent semi-reflecting lens set gradually, and when light beam is incident or be transmitted to i-th semi-transparent semi-reflecting lens surface, light beam by the ratio reflected is
residue light beam continues along former incident direction transmission, wherein, and n>=1,1≤i≤n.
3. reflection and transmission device according to claim 1, it is characterized in that: on the direction contrary with described folded light beam (L2), be provided with reflector plate (13), reflector plate (13) is vertical with folded light beam (L2).
4. reflection and transmission device according to claim 1, it is characterized in that: in the light path of described folded light beam (L2), be provided with beam expanding lens (14), beam expanding lens (14) is vertical with folded light beam (L2), and beam expanding lens (14) and described reflection and transmission mechanism and described total reflective mirror (12) one_to_one corresponding.
5. reflection and transmission device according to claim 4, is characterized in that: described beam expanding lens (14) comprises convex lens or concavees lens.
6. a laser backlight, is characterized in that: comprise the reflection and transmission device according to any one of claim 1 to 5, also comprises laser module (2), backboard (3), diffuser plate (4) and blooming (5); Reflection and transmission device described in several is fixed on backboard (3) in parallel to each other, described incident beam (L1) is provided by laser module (2), through described in the reflection and transmission device that is parallel to each other each reflection and transmission mechanism and total reflective mirror (12) reflection after, form the folded light beam (L2) that multi-beam intensity is equal, folded light beam (L2) incides on diffuser plate (4) and blooming (5), forming surface light source.
7. laser backlight according to claim 6, is characterized in that, described laser module (2) is for multiple, and the light beam incidence being arranged on each reflection and transmission device be parallel to each other is sentenced and provided incident beam (L1).
8. laser backlight according to claim 6, it is characterized in that, described laser module (2) is 1, in the light beam incident direction of the described reflection and transmission device be parallel to each other, an independent reflection and transmission device is also set, laser module (2) provides incident beam (L3) for independent reflection and transmission device, incident beam (L3) is divided into the equal folded light beam of multi-beam intensity by independent reflection and transmission device, and folded light beam is as the incident beam (L1) of each reflection and transmission device be parallel to each other.
9. a laser backlight, is characterized in that: comprise the reflection and transmission device according to any one of claim 1 to 5, also comprises laser module (2), backboard (3), light guide plate (6) and blooming (5); Described reflection and transmission device is fixed on backboard (3), described reflection and transmission device and backboard (3) are all arranged on the side of light guide plate (6), incident beam (L1) is provided to described reflection and transmission device by laser module (2), after the reflection of each reflection and transmission mechanism and total reflective mirror (12) in described reflection and transmission device, form the folded light beam (L2) that multi-beam intensity is equal, folded light beam (L2) incides on light guide plate (6) and blooming (5), forming surface light source.
10. laser backlight according to claim 9, is characterized in that: described reflection and transmission device is fixed on backboard (3) by fixture (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787101.8A CN104501096A (en) | 2014-12-17 | 2014-12-17 | Reflecting transmission device and laser backlight source with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787101.8A CN104501096A (en) | 2014-12-17 | 2014-12-17 | Reflecting transmission device and laser backlight source with same |
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| CN104501096A true CN104501096A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410787101.8A Pending CN104501096A (en) | 2014-12-17 | 2014-12-17 | Reflecting transmission device and laser backlight source with same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116616A (en) * | 2015-10-08 | 2015-12-02 | 杭州虹视科技有限公司 | Liquid crystal backlight device |
| CN105351831A (en) * | 2015-11-10 | 2016-02-24 | 隆昌照明集团有限公司 | System with single light source and multiple street lamps |
| CN106405932A (en) * | 2016-09-28 | 2017-02-15 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN107806590A (en) * | 2017-09-25 | 2018-03-16 | 北京邮电大学 | A kind of novel parallel light source |
| CN110058456A (en) * | 2019-05-05 | 2019-07-26 | 京东方科技集团股份有限公司 | Planar light source device and its driving method, back lighting device, display device |
| CN113445067A (en) * | 2021-06-04 | 2021-09-28 | 清华大学 | Hydrogen production equipment and method for observing bubbles in proton exchange membrane electrolytic cell |
| CN113589588A (en) * | 2021-07-20 | 2021-11-02 | 武汉华星光电技术有限公司 | Backlight module and display module |
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| CN204313226U (en) * | 2014-12-17 | 2015-05-06 | 南京中科神光科技有限公司 | A kind of reflection and transmission device and the laser backlight with this reflection and transmission device |
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| US20060164574A1 (en) * | 2005-01-26 | 2006-07-27 | Samsung Electronics Co., Ltd. | Liquid crystal display |
| CN202432373U (en) * | 2012-02-15 | 2012-09-12 | 青岛海信电器股份有限公司 | Television backlight source system and television |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116616A (en) * | 2015-10-08 | 2015-12-02 | 杭州虹视科技有限公司 | Liquid crystal backlight device |
| CN105351831A (en) * | 2015-11-10 | 2016-02-24 | 隆昌照明集团有限公司 | System with single light source and multiple street lamps |
| CN106405932A (en) * | 2016-09-28 | 2017-02-15 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN107806590A (en) * | 2017-09-25 | 2018-03-16 | 北京邮电大学 | A kind of novel parallel light source |
| CN110058456A (en) * | 2019-05-05 | 2019-07-26 | 京东方科技集团股份有限公司 | Planar light source device and its driving method, back lighting device, display device |
| CN110058456B (en) * | 2019-05-05 | 2021-10-08 | 京东方科技集团股份有限公司 | Surface light source device, driving method thereof, backlight device, and display device |
| CN113445067A (en) * | 2021-06-04 | 2021-09-28 | 清华大学 | Hydrogen production equipment and method for observing bubbles in proton exchange membrane electrolytic cell |
| CN113445067B (en) * | 2021-06-04 | 2022-04-08 | 清华大学 | Hydrogen production equipment and method for observing bubbles in proton exchange membrane electrolytic cell |
| CN113589588A (en) * | 2021-07-20 | 2021-11-02 | 武汉华星光电技术有限公司 | Backlight module and display module |
| CN113589588B (en) * | 2021-07-20 | 2023-12-01 | 武汉华星光电技术有限公司 | Backlight module and display module |
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