CN107167864B - A kind of array line laser quantum dot manufacturing backlight module method and device - Google Patents
A kind of array line laser quantum dot manufacturing backlight module method and device Download PDFInfo
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- CN107167864B CN107167864B CN201710227932.3A CN201710227932A CN107167864B CN 107167864 B CN107167864 B CN 107167864B CN 201710227932 A CN201710227932 A CN 201710227932A CN 107167864 B CN107167864 B CN 107167864B
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- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
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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
- F21V5/04—Refractors for light sources of lens shape
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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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention relates to a kind of array line laser quantum dot manufacturing backlight module method and devices, including at least one excitation point light source, flat light guide plate, the excitation point light source are blue laser light source, and the blue laser light source is arranged in array；It further include line laser molding control element, the line laser molding control element is located between excitation point light source and flat light guide plate；Line laser molding control element is Bao Weier lens, and the arrangement of Bao Weier lens is in for array；The Bao Weier lens axial orientation angle is adjusted by lens carrier, it is adjustable with the distance between blue laser light source between the Bao Weier lens, it further include that the angle that is formed of normal of the line laser by Bao Weier lens forming in light guide plate side incident direction Yu light guide plate side passes through lens carrier adjusting.The present invention can control the brightness and power consumption of the wavelength and laser of light source, and high light laser can be made to effectively become line laser and enter light guide plate.
Description
Technical field
The present invention relates to laser display and lighting area, in particular to a kind of array line laser quantum dot backlight module system
Make method and device.
Background technique
With the development of social science and technology, people are higher and higher to the optical performance requirements of display.It is glimmering from early stage
Light lamp tube is the display of the LED backlight of the display of backlight till now.It is shown simultaneously from computer, arrives mobile phone, arrive large screen,
To home theater, the development of display technology is embodied invariably.However any technology has its limitation, although today LED at
The hot spot in market, is greatly popularized, but there is also development bottlenecks for some aspects, especially in brightness, stability and
In terms of colour gamut.Therefore people attempt to develop new technology, and to improve existing product, and laser is happened at that time as light source.
As light source, its maximum feature is exactly its wide colour gamut, long-life, high brightness, lower energy consumption to laser,
With the unrivaled innate advantage of conventional light source, therefore it is known as after white and black displays, colored display and number display
Forth generation " successor ".It undoubtedly will be in colour gamut, stability, in terms of brightness if backlight can be directly made into using laser
Give existing display technology one very big promotion.However it is limited to the cost of laser, it radiates, dimensional structure etc. is a series of
The problem of, so far in the market still without the product for really making backlight of pure laser.
In comparison, quantum dot film but has very big advantage.It is advantageous that the photoelectric characteristic of quantum dot is very unique,
It can be issued the very pure high quality of various different colours according to the diameter of quantum dot by stimulation electrically or optically
Monochromatic light.And quantum dot is applied to the cardinal principle of display technology, is to excite different rulers in quantum-dot structure by ethereal blue light source
Very little quantum dot crystal to release pure feux rouges and pure green light, and projects in imaging system with remaining pure blue light
Face can thus issue power spectrum concentration, the red green monochromatic light of very pure high quality, complete beyond tradition by quantum dot
The light-emitting phosphor characteristic of LED backlight realizes more preferably imaged color.
Technology of quantum dots makes color distincter with color gamut performance can be substantially improved in backlight, technology of quantum dots by
In its photoelectric characteristic uniqueness so being used widely, and gradually obtain the generally approval of liquid crystal manufacturer and user.It is especially aobvious
Show that giant's Samsung brings a plurality of QLED TV and quantum dot displays using technology of quantum dots on CES.In addition, also disappearing
Breath claim, three star representations 2017 will not reproduction OLED display, with all strength research and development use technology of quantum dots QLED TV, all
Show that technology of quantum dots had wider possibility in 2017.It is believed that the following technology of quantum dots is in display industry meeting
It is more universal.
Scientific research personnel is occupied in the research and development of the back light based on quantum dot at present, however its excitation light source is blue light
LED, since LED is broad-spectrum light source, the spectrum of light source is very wide, cannot play the advantage of quantum dot well, thus compels
It is essential and wants a kind of excitation light source that color is purer, so that the colour gamut for the wide spectrum that quantum dot is formed is wider, color is purer.
Summary of the invention
Technical problem to be solved:
Present invention mainly solves the problem of be deficiency for techniques described above, propose a kind of array line laser quantum
Point backlight module scheme, it is therefore an objective to the excitation intensity that quantum dot is improved by the Linear Laser using high brightness, so that quantum dot
Its function of discharging pure color is more fully played, the complexity and cost of pure laser source system are reduced, in conjunction with highlighted line style
Laser and quantum dot film reapective features improve the brightness and colour gamut of backlight display system.
To solve the above problems, basic conception of the invention is to highlight linear laser source using array, and control line swashs
The wavelength of the wavelength of light source, especially blue light effectively quantum dot film to be excited to shine.The present invention is based on optical system couplings below
Close design principle: the coupling efficiency of an optical system is mainly determined by incident and outgoing system etendue, works as incidence
It is optical coupled most effective when the etendue of system and the flux matched etendue of outgoing system.
Technical solution:
A kind of array line laser quantum dot manufacturing backlight module method and device, including at least one excitation point light source,
Flat light guide plate, it is characterised in that: the excitation point light source is blue laser light source, and the blue laser light source is in array
Arrangement；
It further include line laser molding control element, the line laser molding control element is located at excitation point light source and flat
Between light guide plate；The line laser molding control element is Bao Weier lens, and the Bao Weier lens arrangement is in array, with
Blue laser light source corresponds, and the lens axial orientation angle Bao Weier is adjusted by lens carrier；The Bao Weier lens with
The position-adjustable of blue laser light source passes through lens branch with the distance between blue laser light source between the Bao Weier lens
Frame is adjusted；It further include the line laser by Bao Weier lens forming in light guide plate side incident direction and light guide plate side
The angle that normal is formed is adjusted by lens carrier.
The present invention highlights laser source using array, is the brightness and power consumption in order to preferably control laser.It is single
The power of laser determines by total guide-lighting efficiency of light guide plate and its optical film group, too low to reach realization and effectively show institute
What is needed highlights, too high not only waste of resource, but also is possible to generate unnecessary light pollution, increases the complexity of system therewith,
It will increase the cost of system.To improve laser module to the coupling efficiency of light guide plate, present invention employs array lens groups
Concept allows high brightness laser to become line laser by one group of lens, more effectively imports light guide plate.In order to reduce line
The beam angle of laser, the present invention are designed using Bao Weier lens arrangement.Bao Weier lens can pass through the exhibition of control emergent light
Wide angle effectively reduces the width of outgoing beam.The width of outgoing beam closer to light guide plate etendue, then two
The coupling of system is more effective.Since Bao Weier lens axial orientation angle is adjustable, so that being existed by the line laser of Bao Weier lens forming
The angle that the normal of light guide plate side incident direction and light guide plate side is formed is adjustable, further increases line laser and light guide plate
Coupling efficiency.
Also, the interval between blue laser light source array is determined by the coupling efficiency of line laser and light guide plate, total laser
Device number by backlight module total light flux with display system require to determine.The array pitch of corresponding Bao Weier lens with
And number selection.
Pass through the propagation path of above structure light are as follows: light issues the prismatic lens refraction for encountering array from light source, generates
The smaller line laser of width, line laser enter from the side incidence end of light guide plate, project from the upper surface of light guide plate.
Preferably, the wave-length coverage of blue laser light source is 450nm-455 nm, and power is greater than 1.5 watts.Swash to reduce
The excitation point light source that light device shines generated hot, of the invention for a long time has the cooling system of special designing, the heat dissipation system
System is with common heat sink heat dissipation diversion trench.Each light source and a heat sink heat dissipation diversion trench phase in the blue laser light source
Even.When the power of laser light source is greater than 1.5 watt-hours, laser light source at this time is high power laser sources, and danger level is 4 grades.
The present invention be also disclosed improve line laser quantum dot film group optical coupling efficiency method, essentially consist in how
By adjusting the orientation and Scattering Point of Light Guide Plates density and form of array lens, light source, light guide plate and Bao Weier lens group come excellent
Change system, to improve total optical coupling efficiency of system.Array lens are at a distance from light guide plate edge by guide-lighting template die group
Required total brightness of system determines.More dipped beam Qiang Yue great, required laser number is also more, and corresponding system lenses number increases
Add.Vice versa.It requires to determine by the optimization of overall brightness needed for final.
Preferably, the excitation point light source is replaceable and detaching structure；Lens array group is fixed on lens fixed frame；
Multiple excitation point light sources are fixed on light source fixing frame；The light source fixing frame and lens fixed frame are fixedly connected on bottom plate framework.
System maintenance after such design both facilitates, laser die block array use the design of replaceable and detaching structure, standby replacement,
Also it can guarantee the stability of optical system.
Further, this method using by control quantum dot membrane system thickness and placement order come the brightness of control system and
Colour gamut.
Further, using above-mentioned array line laser quantum dot manufacturing backlight module method and device as backlight mould
The backlight of group；It further include quantum dot film group；The quantum dot film group is to be made of the controllable membrane system of thickness, at least a piece of；Institute
Quantum dot film quantity and thickness is stated to be determined by the colour gamut of final display backlight mould group.
Preferably, the quantum dot film by extrusion molding sandwiched type structure row at, quantum dot membrane material ingredient include green and
Red quantum dot material, and the two ratio is adjustable.
Since this system uses high brightness laser, the optically and thermally performance of quantum dot film group is put forward higher requirements,
Quantum dot film is coated by the anti-light material for learning aging.Entire quantum dot film, which is selected, has the long-life, high saturating, heat-resisting, anti-distortion
Material is made.
Another feature protruded of the invention is can be by control quantum dot membrane system thickness and placement order to control
Brightness and colour gamut are needed, and colour gamut is one highly important index of display system.
Further, a kind of display device, including liquid crystal display panel and above-mentioned backlight module.Battle array disclosed by the invention
Column line laser quantum dot backlight module was both displayed for, and can be used for illuminating.
The utility model has the advantages that
(1) present invention highlights laser source using array, not only can control the wavelength of light source, but also can control sharp
The brightness and power consumption of light device.
(2) present invention uses array lens group, so that high light laser is effectively become line laser and enters light guide plate.
(3) present invention is designed using Bao Weier lens arrangement, can effectively be subtracted by controlling the broadening angle of emergent light
The width of small outgoing beam.The width of outgoing beam closer to the etendue of light guide plate, make line laser and light guide plate this
The optical coupling of two systems is more effective.
(4) present invention is using by controlling quantum dot membrane system thickness and placement order come the brightness and colour gamut of control system.
Detailed description of the invention
Fig. 1 is the overall structure of array line laser quantum dot light emitting device, backlight module；
Fig. 2 is array line laser quantum dot light emitting device, backlight module cross-sectional structure figure；
Fig. 3 is unilateral incident array line laser quantum dot light emitting device, backlight module light guide plate bottom scattering point design
Structure chart；
Fig. 4 is the structure chart of bilateral incident array line laser quantum dot light emitting device, backlight module；
Fig. 5 is bilateral incident array line laser quantum dot light emitting device, backlight module bottom scattering point design structure diagram；
Fig. 6 is the azimuthal variation schematic configuration diagram of unilateral incident ray laser formation lens of the invention；
Line laser Fig. 7 of the invention when being unilateral incident is linear in light guide plate side incident direction and the method for light guide plate side
At the adjustable schematic diagram of angle；
Fig. 8 is the front view of lens adjusting bracket of the invention；
Fig. 9 is the sectional view of lens adjusting bracket of the invention.
Specific embodiment
The present invention will be described with reference to the accompanying drawing:
Fig. 1 is the overall structure of array line laser quantum dot light emitting device, backlight module.It includes the indigo plant positioned at right side
Color laser light source 3 is followed successively by array prism group i.e. array Bao Weier prism group 2, light guide plate on the inside of laser light source
105 and quantum dot film group and subsequent optical coupling unit.
Wherein, blue laser light source is made of semiconductor laser.The temperature that may cause is irradiated for a long time for reduction to mention
Height, blue laser light source have been attached to special radiator structure, and structure includes along laser module end direction from left to right
The common heat sink diversion trench composition of air, do not drawn in figure wherein.
The number of array laser light source is determined by the size of light guide plate 105 and the coupling efficiency of Bao Weier lens 2.Wherein Bao
Weir lens are coupled lens, are a kind of lenticular units that point light source can be converted to linear light source, and material is BK7 glass.
The broadening angle of line laser broadens angular dimension luminous intensity and leaded light as needed for light guide plate from 90 degree to 120 degree
The coupling efficiency of plate determines.Solid line with the arrow is laser beam in figure.5 be the connected relay part, that is, light source of array laser module
Fixed frame.6 are solidly connected structure i.e. lens fixed frame for Bao Weier lens unit, and above-mentioned two fixed frame is made of aluminium.Fig. 1
In 1 part be array line laser quantum dot light emitting device and backlight module overall structure, including flat leaded light
Size needed for plate can change at several cun between 65 cun of displays.
Fig. 2 is the cross-sectional view of Fig. 1, the main optical coupling part including light guide plate and quantum dot system backlight module.Except 2
, it further includes 6 optical components from 101 to 106, wherein 106 that 3, which be corresponding Bao Weier lens and highlighted laser light source,
For reflection diaphragm, the light of light guide plate is appeared for being reflected into light guide plate bottom, its purpose is to the laser that will be overflowed is anti-
It is fed back to light guide plate, reduces the loss of luminous flux.105 be flat light guide plate, plane length and width dimensions by required display sizes and
It is fixed.Thickness is determined by the coupling efficiency of institute's light requirement.103 and 104 be the quantum dot membrane system of different quantum dot densities and thickness, is used
In the coloration of control display color.102 be blast membrane system, and 101 be diffusion membrane system.
Fig. 3 is the backlight module of unilateral irradiation, and 201 be that correspondingly another rim portion is simultaneous is that light guide plate side is anti-for light guide plate
Film is penetrated, its purpose is to stop the light at light guide plate edge to be revealed.301 be large-size light-conducting plate bottom scattering point, and 302 be small
Size light guide plate bottom scattering point, and be circle, size determines by light guide plate coupling efficiency, and scattering point density design by
Required light guide plate coupling efficiency requires to determine.Density generally far from optical entrance end is larger.202 be light guide plate exit end,
Post high-reflecting film, it is therefore an objective to by highly reflecting films the transmitted light for having entered light guide plate be fed back into light guide plate again, reduce to enter and lead
The light loss of tabula rasa.203 be the incidence end of light guide plate.
Fig. 4 is the design of bilateral leaded light.Array laser module is incident simultaneously at left and right sides of light guide plate, including symmetrical
Laser light source module and Bao Weier Lens Coupling part.
The design structure of Fig. 5 light guide plate corresponding with bilateral leaded light.The scattering dot density and size of its light guide plate outer bottom
Depending on the leaded light as needed for system requires.201 be light guide plate offside reflection film.301 be large-size light-conducting plate bottom scattering point,
302 be small size light guide plate bottom scattering point.As can be seen that 301 idea density are closeer in light guide plate middle section.
Bao Weier lens as shown in Figure 6 are adjustable relative to the position of laser light source, that is, the orientation of outgoing Xi'an laser
It is adjustable.The device is conducive to control outgoing in the light distribution in light guide plate as seen from the figure, thus can be logical to institute's light requirement
Amount and coupling efficiency are controlled, additionally, due to this azimuthal variation, so that the system can be with Effective Regulation light guide plate
Outgoing uniformity.
The unilateral incident line laser by Bao Weier lens forming is illustrated in figure 7 in light guide plate side incident direction and leaded light
The adjustable schematic diagram of angle that the normal of plate side is formed.In order to further increase the optical coupling efficiency of line laser and light guide plate,
The invention proposes using Bao Weier lens forming line laser light guide plate side incident direction and light guide plate side normal
The adjustable method of the angle of formation carries out optical system coupled.Since the incident direction under line laser in light guide plate changes,
It is bound to cause the variation of exit facet luminous flux on light guide plate, the optical coupling efficiency of whole system is optimized therewith.
If Fig. 8 and Fig. 9 show lens carrier 21, wherein 22 be carrier base, 23 be regulation handle.Lens carrier has two
It is a, be separately fixed on lens fixed frame and light source fixing frame on.The carrier base 22 of lens carrier is to place lens and light source
Fixed device, lens and light source can be moved along fixed frame as seen from the figure, to change the position between lens and light source
The line laser of relationship, the azimuth of change lens and Bao Weier lens forming is set in light guide plate side incident direction and light guide plate side
The angle that the normal in face is formed.
Present invention design is extensible to be applied to rectangular light guide plate diagonal Linear Laser array incidence situation, can also
To be applied to round and irregular figure light guide plate backlight design.
The present invention especially can also extend to stratiform with expanded application in one-dimensional and multidimensional Linear Laser Array Design
The multi-dimensional design of light guide plate.
The present invention can be with expanded application in annular and the backlight design of spherical light guide plate.
Above-described several embodiments and the scope of protection of the present invention is not limited, it is any to be made based on this embodiment
Equivalent and similar transformation will also receive same protection.
Although the present invention has been described by way of example and in terms of the preferred embodiments, they be not it is for the purpose of limiting the invention, it is any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, therefore guarantor of the invention
Shield range should be subject to what claims hereof protection scope was defined.
Claims (7)
1. a kind of array line laser quantum dot backlight module, including at least one excitation point light source (3), flat light guide plate
(105), it is characterised in that: the excitation point light source (3) is blue laser light source, and the blue laser light source is arranged in array
Cloth；
It further include line laser molding control element, the line laser molding control element is located at excitation point light source and flat leaded light
Between plate；The line laser molding control element is Bao Weier lens (2), and Bao Weier lens (2) arrangement is in array,
It is corresponded with blue laser light source, and Bao Weier lens axial orientation angle can be adjusted by lens carrier (21)；
The position-adjustable of Bao Weier lens (2) and blue laser light source, between the Bao Weier lens with blue laser
The distance between light source can be adjusted by lens carrier (21)；
It is formed by the line laser of the Bao Weier lens forming in light guide plate side incident direction and the normal of light guide plate side
Angle can be adjusted by lens carrier (21).
2. a kind of array line laser quantum dot backlight module according to claim 1, it is characterised in that: the blue swashs
The wave-length coverage of radiant is 450nm-455 nm, and power is greater than 1.5 watts；Each light source and one in the blue laser light source
A heat sink heat dissipation diversion trench is connected.
3. a kind of array line laser quantum dot backlight module according to claim 1, it is characterised in that: the excitation point
Light source (3) is replaceable and detaching structure；Bao Weier lens array group is fixed on lens fixed frame (6)；Multiple excitation point light sources
(3) it is fixed on light source fixing frame (5)；The light source fixing frame (5) and lens fixed frame (6) are fixedly connected on bottom plate framework.
4. a kind of array line laser quantum dot backlight module according to any one of claims 1 to 3, it is characterised in that:
It further include quantum dot film group；The quantum dot film group is to be made of the controllable membrane system of thickness, by the thickness for controlling quantum dot membrane system
It spends with placement order and controls the brightness and colour gamut of backlight module.
5. a kind of array line laser quantum dot backlight module according to any one of claims 1 to 3, it is characterised in that:
It further include quantum dot film group；The quantum dot film group is to be made of the controllable membrane system of thickness, including at least a piece of quantum dot film；
The quantity and thickness of the quantum dot film are determined by the colour gamut of final display backlight mould group.
6. a kind of array line laser quantum dot backlight module according to claim 5, it is characterised in that: the quantum dot
Film is formed by extrusion molding sandwiched type structure, and quantum dot membrane material includes green and red quantum dot material, and the two ratio is adjustable.
7. a kind of display device, which is characterized in that including liquid crystal display panel and such as battle array of any of claims 1-6
Column line laser quantum dot backlight module.
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| CN107390433A (en) * | 2017-09-20 | 2017-11-24 | 南京第五十五所技术开发有限公司 | Modularization line laser quantum dot backlight module device and display device |
| CN108872615B (en) * | 2018-04-26 | 2021-08-06 | 迪瑞医疗科技股份有限公司 | Coupling type blood coagulation testing system and method |
| CN110221378A (en) * | 2019-05-08 | 2019-09-10 | 南京第五十五所技术开发有限公司 | A kind of array side insertion lens type light guide plate backlight coupling device and display device |
| CN111458931A (en) * | 2020-04-02 | 2020-07-28 | 河南百合特种光学研究院有限公司 | High-brightness backlight source module based on L D pump fluorescent crystal |
| CN114465075A (en) * | 2022-02-09 | 2022-05-10 | 江苏亮点光电科技有限公司 | A word line laser for generating a word line group |
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