CN111443526B - Backlight module capable of realizing multiple composite light equalization - Google Patents
Backlight module capable of realizing multiple composite light equalization Download PDFInfo
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- CN111443526B CN111443526B CN202010380681.4A CN202010380681A CN111443526B CN 111443526 B CN111443526 B CN 111443526B CN 202010380681 A CN202010380681 A CN 202010380681A CN 111443526 B CN111443526 B CN 111443526B
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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
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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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
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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
- G02F1/133602—Direct backlight
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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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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
- G02F1/133602—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 discloses a backlight module for multiple composite light equalization, which comprises a frame, a substrate and a light source part, wherein the light source part is arranged on the frame; the frame is of an annular structure, one side of the frame is connected with a substrate, one side edge of the substrate is movably connected with one side edge of the frame, the substrate can be opened and closed, an electroluminescent device is arranged on the inner side of the substrate, the electroluminescent device is electrified to generate a light source, a light emitting layer is arranged between the substrate and the frame, the light emitting layer is of a multilayer composite structure, and the photoluminescent layer is sequentially provided with a first photoluminescent layer, a second photoluminescent layer, a brightening layer and a filter layer; the light source part comprises a plurality of light source points and a light guide plate arranged outside the point light sources, and the light source points can adjust light source parameter information; when the electroluminescent device is powered off, the light source points irradiate the light emitting layer to form preset illumination.
Description
Technical Field
The invention relates to the field of photoluminescence or display, in particular to a backlight module for multiple compounding and light equalization.
Background
The backlight module is one of the key components of the liquid crystal display panel. The function is to provide enough light source with uniform brightness and distribution to make it able to normally display images, so called backlight source is a light source located at the back of the liquid crystal display, and its luminous effect will directly affect the visual effect of the liquid crystal display module. The liquid crystal itself does not emit light, and it displays graphics or characters as a result of its modulation of light. The development of backlights can be traced back to the second war period. At the time, a subminiature tungsten lamp was used as a backlight source for aircraft instruments. This is the initial stage of backlight development. Through development of half a century, the backlight source has become an electronic independent subject nowadays and gradually forms a research and development hotspot.
Traditional backlight unit shines the light source through the electroluminescence principle, and does not carry out the even light through multilayer composite construction and handle, and the homogeneity of light source is relatively poor, does not be provided with the light guide plate in the utilization to the light source, and the utilization ratio of light source is lower, and when electroluminescent device outage back, backlight unit can't continue to show, if at the intersection, after the traffic signal lamp outage, can't show, causes the traffic jam, and when serious, still produces the traffic accident easily.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the backlight module for compounding the uniform light for many times.
In order to achieve the purpose, the invention adopts the technical scheme that: a backlight module for multiple composite light equalization comprises: a frame, a substrate and a light source; it is characterized in that the preparation method is characterized in that,
the frame is of an annular structure, one side of the frame is connected with a substrate, one side edge of the substrate is movably connected with one side edge of the frame, the substrate can be opened and closed, an electroluminescent device is arranged on the inner side of the substrate, and the electroluminescent device is electrified to generate a light source;
a light-emitting layer is arranged between the substrate and the frame, the light-emitting layer is of a multilayer composite structure, and the photoluminescent layer is sequentially provided with a first photoluminescent layer, a second photoluminescent layer, a brightening layer and a filter layer;
the light source part is arranged on one side of the luminous layer and comprises a plurality of light source points and a light guide plate arranged outside the point light source, and the light source points can adjust light source parameter information;
when the electroluminescent device is powered off, the light source points irradiate the light emitting layer to form preset illumination.
In a preferred embodiment of the invention, the brightness enhancing layer has a two-dimensional photonic crystal structure, and is capable of passing light sources of a particular wavelength.
In a preferred embodiment of the present invention, a top pillar is disposed at one end of the frame close to the substrate.
In a preferred embodiment of the present invention, a slot is disposed on a side of the substrate close to the frame, the slot is corresponding to the top pillar, the top pillar is capable of being inserted into the slot, and when the top pillar is inserted into the slot, a predetermined angle is formed between the substrate and the frame.
In a preferred embodiment of the present invention, the light source parameter information includes one or a combination of two or more of light source brightness, wavelength, light time and light frequency.
In a preferred embodiment of the present invention, the light guide plate has an arc structure or a groove structure.
In a preferred embodiment of the present invention, the first and second photoluminescent layers can pass through a light source with a specific wavelength.
In a preferred embodiment of the present invention, the light source points can be sequentially lighted up according to a predetermined track.
In a preferred embodiment of the present invention, the electroluminescent device includes a first electrode plate, a second electrode plate and an insulating layer, and the first electrode plate and the second electrode plate are electrified to generate an electric field.
The other technical scheme of the invention is as follows: a traffic signal device comprising the backlight module of any of the above claims for multiple recombination of uniform light.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) backlight unit includes two kinds of luminous parts of electroluminescence and photoluminescence, and at outage or power failure in-process, backlight unit can continue to give out light, and the power failure in-process, electroluminescent traffic signal lamp loses effect, can't continue to use, nevertheless makes backlight unit can continue to use through the photoluminescence principle to make traffic signal lamp can incessant operation, improve traffic safety nature.
(2) The electroluminescent device is arranged on the inner side of the substrate, after power failure, the substrate rises, a certain angle is formed between the substrate and the frame at the moment, the substrate and the frame are supported through the support pillar, the light source points irradiate on the light emitting layer to realize display of the backlight module, the light emitting layer is of a multi-layer structure, the light emitting layer can penetrate through a light source with characteristic wavelength, the backlight module can display different illumination brightness and illumination colors, and the use is more flexible.
(3) The light source point can light up according to predetermined orbit in proper order, also can twinkle or often light according to predetermined orbit or shape, and through this kind of mode, backlight unit can realize the dynamic display of predetermined orbit, or show different colours, the figure of different luminance, can be used for the warning effect.
(4) The light emitting layer is of a multilayer structure, the middle of the light emitting layer is provided with the filter layer, and the light source penetrates through the multilayer structure, so that the light source can be compounded for many times, the light equalizing effect of the light source for many times is realized, and the uniformity of the display light source is stronger.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic partial structure view of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a back structure of a backlight module according to a preferred embodiment of the present invention;
in the figure: 1. the light guide plate comprises a frame, 2, a movable shaft, 3, a substrate, 4, a clamping groove, 5, a top column, 6, an electroluminescent device, 7, a light emitting layer, 8, a light source point, 9 and a light guide plate.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
As shown in fig. 1-2, a backlight module with multiple composite light uniforming comprises: a frame 1, a substrate 3 and a light source;
specifically, the frame 1 is of an annular structure, one side of the frame 1 is connected with a substrate 3, one side edge of the substrate 3 is movably connected with one side edge of the frame 1, the substrate 3 can be opened and closed, an electroluminescent device 6 is arranged on the inner side of the substrate 3, and the electroluminescent device 6 is electrified to generate a light source;
a light-emitting layer 7 is arranged between the substrate 3 and the frame 1, the light-emitting layer 7 is of a multilayer composite structure, and the photoluminescent layer 7 is sequentially provided with a first photoluminescent layer 7, a second photoluminescent layer 7, a brightening layer and a filter layer;
the light source part is arranged on one side of the luminous layer 7 and comprises a plurality of light source points 8 and a light guide plate 9 arranged on the outer side of the light source points 8, and the light source points 8 can adjust light source parameter information;
when the electroluminescent device 6 is powered off, the light source points 8 irradiate the light-emitting layer 7 to form predetermined illumination.
It should be noted that, the substrate 3 is connected with the frame 1 through the movable shaft 2, the substrate 3 can rotate along the movable shaft 2, the top pillar 5 can stretch and contract, in the process of stretching and contracting the top pillar 5, the length of the top pillar 5 changes, at the same time, the angle between the substrate 3 and the frame 1 supported by the top pillar 5 increases, electroluminescence, that is, electroluminescence is electroluminescence, the electroluminescence device 6 includes a positive plate and a negative plate, an electric field is generated through the voltage applied on the two plates, electrons excited by the electric field hit the luminescence center, the electrons jump, change and compositely emit light between energy levels, one side of the electroluminescence device 6 is provided with a luminescent material, the luminescent material includes zinc sulfide doped with copper and silver, the outer sides of the plates are all provided with insulating layers, which can prevent the outer sides of the plates from discharging and generate an electric shock phenomenon, the light source points 8 can be a convex structure or a cylindrical structure or a spherical structure, under the normal condition, backlight unit sends out light through electroluminescent device 6, when the outage, base plate 3 supports through fore-set 5, form certain angle between frame 1 and the base plate 3 this moment, shine the luminescent layer 7 through light source point 8 and realize photoluminescence, light source point 8 shines the in-process, can guide the light source through light guide plate 9 in the light source point 8 outside, prevent that the light source from taking place diffraction or scattering, improve the gathering nature of light source, realize the combination of two kinds of luminous principles, make backlight unit homoenergetic normal use under any circumstance. Backlight unit includes two kinds of luminous parts of electroluminescence and photoluminescence, at outage or power failure in-process, backlight unit can continue to give out light, in the power failure in-process, electroluminescent traffic signal lamp loses the effect, can't continue to use, but make backlight unit can continue to use through the photoluminescence principle, electroluminescent device 6 sets up the inboard at base plate 3, after the outage, base plate 3 rises, there is certain angle between base plate 3 and the frame 1 this moment, support through fore-set 5 between base plate 3 and the frame 1, light source point 8 shines on luminescent layer 7, realize backlight unit's demonstration, luminescent layer 7 is the multilayer structure, luminescent layer 7 can pass the light source of characteristic wavelength, can make backlight unit show different illumination luminance and illumination colour, it is more nimble to use, the use is more
In accordance with embodiments of the present invention, the brightness enhancing layer has a two-dimensional photonic crystal structure, which is capable of passing light sources of a particular wavelength.
It should be noted that the photonic crystal structure is a microstructure formed by periodically arranging media with different refractive indexes, and the brightness enhancing layer can be a two-dimensional photonic crystal structure, but is not limited to this structure, and those skilled in the art can adjust the structure according to actual use conditions, for example, adjust the structure to be a one-dimensional photonic crystal structure or a three-dimensional photonic crystal structure, and the photonic crystal structure can generate a band effect on a light wave with a certain frequency.
According to the embodiment of the invention, one end of the frame 1 close to the base plate 3 is provided with a top pillar 5.
The frame 1 may be a square frame 1 or a circular frame 1, the frame 1 may be hollow, the substrate 3 may be clamped inside the frame 1, and the top pillars 5 may be provided at edges of both sides of the frame 1.
According to the embodiment of the invention, a clamping groove 4 is arranged on one side of the base plate 3 close to the frame 1, the position of the clamping groove 4 corresponds to the position of the top pillar 5, the top pillar 5 can be inserted into the clamping groove 4, and when the top pillar 5 is inserted into the clamping groove 4, a preset angle is formed between the base plate 3 and the frame 1.
It should be noted that the card slots 4 are disposed on two side edges of the substrate 3, and correspond to the positions of the top pillars 5, when electroluminescence is required, the substrate 3 is clamped in the frame 1, at this time, the angle between the substrate 3 and the frame 1 is 0, after the substrate 3 is opened, the angle between the substrate 3 and the frame 1 is adjusted by the length of the top pillars 5, and the longer the top pillars 5 are, the larger the angle between the substrate 3 and one side of the frame 1 is after the substrate 3 is opened.
According to the embodiment of the invention, the light source parameter information comprises one or more of light source brightness, wavelength, light time and light frequency.
It should be noted that when light is an electromagnetic radiation in a certain wavelength range, the electromagnetic radiation with the wavelength of 380nm to 780nm can cause human vision, namely visible spectrum, and the wavelength range of the light source in the present application is set to 380nm to 780nm, preferably 380nm to 500nm, 600nm to 780nm and 580 nm.
According to the embodiment of the invention, the light guide plate 9 has an arc structure or a groove structure.
It should be noted that, the light guide plate 9 is provided with an arc-shaped structure or a groove-shaped structure, but is not limited to these two structures, and a person skilled in the art can set the light guide plate 9 into a convex structure or the like according to actual use conditions, and in the process of illuminating the light source points 8, the light source can be guided by the light guide plate 9 outside the light source points 8, so as to prevent the light source from being diffracted or scattered, and improve the light gathering property of the light source.
According to the embodiment of the invention, the first photoluminescent layer 7 and the second photoluminescent layer 7 can pass through a light source with a specific wavelength.
It should be noted that the first photoluminescent layer 7 can receive the light source excited by any wavelength in the wavelengths 360-.
According to an embodiment of the present invention, the light source points 8 can be lit up sequentially in accordance with a predetermined trajectory.
It should be noted that the light source points 8 can be sequentially lighted up according to a predetermined track, and can also be flashed or normally lighted according to a predetermined track or shape, by this way, the backlight module can realize dynamic display of the predetermined track, or display different colors and different brightness graphs, and can be used for warning, the predetermined track can be a graph, such as a square, a circular or a polygonal structure or an irregular graph, and the predetermined track can also be a curved path or a straight path or an unclosed curve or straight line with other shapes.
According to the embodiment of the present invention, the electroluminescent device 6 includes a first electrode plate, a second electrode plate and an insulating layer, and the first electrode plate and the second electrode plate are energized to generate an electric field.
The electroluminescent device 6 includes a positive electrode plate and a negative electrode plate, and generates an electric field by a voltage applied to the two electrode plates, and electrons excited by the electric field hit a luminescence center, and the electrons jump, change, and recombine between energy levels to emit light.
The other technical scheme of the invention is as follows: a traffic signal device comprising the multiple composite uniform light backlight module of any one of the preceding claims, wherein the backlight module is arranged at the back of the traffic signal device, and a transparent plate is arranged at the front of the traffic signal device; specifically comprises
Backlight module, including: a frame 1, a substrate 3 and a light source; in particular, the method of manufacturing a semiconductor device,
the frame 1 is of an annular structure, one side of the frame 1 is connected with a substrate 3, one side edge of the substrate 3 is movably connected with one side edge of the frame 1, the substrate 3 can be opened and closed, an electroluminescent device 6 is arranged on the inner side of the substrate 3, and the electroluminescent device 6 is electrified to generate a light source;
a light-emitting layer 7 is arranged between the substrate 3 and the frame 1, the light-emitting layer 7 is of a multilayer composite structure, and the photoluminescent layer 7 is sequentially provided with a first photoluminescent layer 7, a second photoluminescent layer 7, a brightening layer and a filter layer;
the light source part comprises a plurality of light source points 8 and a light guide plate 9 arranged outside the light source points 8, and the light source points 8 can adjust light source parameter information;
when the electroluminescent device 6 is powered off, the light source points 8 irradiate the light-emitting layer 7 to form predetermined illumination.
It should be noted that electroluminescence, i.e. electroluminescence, the electroluminescence device 6 includes a positive plate and a negative plate, an electric field is generated by voltage applied on the two plates, electrons excited by the electric field collide with a luminescence center, the electrons jump, change and compound between energy levels to emit light, a luminescent material is disposed on one side of the electroluminescence device 6, the luminescent material includes zinc sulfide doped with copper and silver, an insulating layer is disposed on the outer side of each plate to prevent discharge and electric shock phenomena from occurring on the outer side of the plate, the light source points 8 can be a convex structure or a cylindrical structure or a spherical structure, under normal conditions, the backlight module emits light through the electroluminescence device 6, when power is off, the substrate 3 is supported by the support posts 5, at this time, a certain angle is formed between the frame 1 and the substrate 3, the luminescent layer 7 is irradiated by the light source points 8 to realize photoluminescence, and during the irradiation process of the light source points 8, the light guide plate 9 outside the light source points 8 can guide the light source, prevent the light source from diffraction or scattering, improve the gathering property of the light source, realize the combination of two kinds of light-emitting principles, and enable the backlight module to be normally used under any condition.
According to the embodiment of the present invention, the electroluminescent device 6 includes a first electrode plate, a second electrode plate and an insulating layer, and the first electrode plate and the second electrode plate are energized to generate an electric field.
The electroluminescent device 6 includes a positive electrode plate and a negative electrode plate, and generates an electric field by a voltage applied to the two electrode plates, and electrons excited by the electric field hit a luminescence center, and the electrons jump, change, and recombine between energy levels to emit light.
According to the embodiment of the invention, the light source parameter information comprises one or more of light source brightness, wavelength, light time and light frequency.
It should be noted that the light is an electromagnetic radiation in a certain wavelength range, the electromagnetic radiation with the wavelength of 380nm to 780nm can cause human vision, namely visible spectrum, and the wavelength range of the light source in this application is set in 380nm to 780nm, preferably 380nm to 500nm, 600nm to 780nm, 580 nm.
According to the embodiment of the invention, a clamping groove 4 is arranged on one side of the base plate 3 close to the frame 1, the position of the clamping groove 4 corresponds to the position of the top pillar 5, the top pillar 5 can be inserted into the clamping groove 4, and when the top pillar 5 is inserted into the clamping groove 4, a preset angle is formed between the base plate 3 and the frame 1.
According to the embodiment of the invention, the first photoluminescent layer 7 and the second photoluminescent layer 7 can pass through a light source with a specific wavelength.
It should be noted that the first photoluminescent layer 7 can receive the light source excited by any wavelength in the wavelengths 360-.
According to the embodiment of the invention, the light guide plate 9 has an arc structure or a groove structure.
It should be noted that, the light guide plate 9 is provided with an arc-shaped structure or a groove-shaped structure, but is not limited to these two structures, and those skilled in the art can set the light guide plate 9 into a convex structure or the like according to actual use conditions, and in the process of illuminating the light source points 8, the light source can be guided by the light guide plate 9 outside the light source points 8, so as to prevent the light source from being diffracted or scattered, and improve the light gathering property of the light source.
According to an embodiment of the present invention, the light source points 8 can be lit up sequentially in accordance with a predetermined trajectory.
It should be noted that the predetermined trajectory can be a figure, such as a square, circular or polygonal structure or an irregular figure, and can also be a curved path or a straight path or other shape of an unclosed curve or straight line.
In accordance with embodiments of the present invention, the brightness enhancing layer has a two-dimensional photonic crystal structure, which is capable of passing light sources of a particular wavelength.
It should be noted that the photonic crystal structure is a microstructure formed by periodically arranging media with different refractive indexes, and the brightness enhancing layer can be a two-dimensional photonic crystal structure, but is not limited to this structure, and those skilled in the art can adjust the structure according to actual use conditions, for example, adjust the structure to be a one-dimensional photonic crystal structure or a three-dimensional photonic crystal structure, and the photonic crystal structure can generate a band effect on a light wave with a certain frequency.
According to the embodiment of the invention, one end of the frame 1 close to the base plate 3 is provided with a top pillar 5.
The frame 1 may be a square frame 1 or a circular frame 1, the frame 1 may be hollow, the substrate 3 may be clamped inside the frame 1, and the top pillars 5 may be provided at edges of both sides of the frame 1.
It should be noted that the card slots 4 are disposed on two side edges of the substrate 3, and correspond to the positions of the top pillars 5, when electroluminescence is required, the substrate 3 is clamped in the frame 1, at this time, the angle between the substrate 3 and the frame 1 is 0, after the substrate 3 is opened, the angle between the substrate 3 and the frame 1 is adjusted by the length of the top pillars 5, and the longer the top pillars 5 are, the larger the angle between the substrate 3 and one side of the frame 1 is after the substrate 3 is opened.
The backlight module comprises two light emitting parts, namely electroluminescence and photoluminescence, and can continue to emit light in the power failure or power failure process, and the electroluminescent traffic signal lamp cannot continue to be used in the power failure process due to the fact that the electroluminescent traffic signal lamp is out of function, but the backlight module can continue to be used through the photoluminescence principle, so that the traffic signal lamp can run uninterruptedly, and traffic safety is improved.
Electroluminescent device 6 sets up the inboard at base plate 3, and after the outage, base plate 3 rises, has certain angle between base plate 3 and the frame 1 this moment, supports through fore-set 5 between base plate 3 and the frame 1, and light source point 8 shines on luminescent layer 7, realizes backlight unit's demonstration, and luminescent layer 7 is the multilayer structure, and luminescent layer 7 can pass the light source of characteristic wavelength, can make backlight unit show different illumination luminance and illumination colour, uses more in a flexible way.
The light-emitting layer 7 is of a multilayer structure, the middle of the light-emitting layer is provided with a filter layer, and the light source penetrates through the multilayer structure, so that the light source can be compounded for many times, the light equalizing effect of the light source for many times is realized, and the uniformity of the display light source is stronger.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A backlight module for multiple composite light equalization comprises: a frame, a substrate and a light source element; it is characterized in that the preparation method is characterized in that,
the frame is of an annular structure, one side of the frame is connected with the substrate, one side edge of the substrate is movably connected with one side edge of the frame, the substrate can be opened and closed, an electroluminescent device is arranged on the inner side of the substrate, and the electroluminescent device is electrified to generate a light source;
a light-emitting layer is arranged between the substrate and the frame, the light-emitting layer is of a multilayer composite structure, and the multilayer composite structure comprises a first photoluminescent layer, a second photoluminescent layer, a brightening layer and a filter layer which are sequentially arranged;
the light source part is arranged on one side of the luminous layer and comprises a plurality of light source points and a light guide plate arranged on the outer side of the point light source, and the light source points can adjust light source parameter information;
when the electroluminescent device is powered off, the light source points irradiate the light emitting layer to form preset illumination.
2. The backlight module of claim 1, wherein: the brightness enhancing layer has a two-dimensional photonic crystal structure and is capable of passing light of a particular wavelength.
3. The backlight module of claim 1, wherein: and one side of the frame, which is close to the substrate, is provided with a top column.
4. The backlight module of claim 3, wherein: the base plate is provided with the draw-in groove on one side that is close to the frame, draw-in groove position with the fore-set position corresponds, the fore-set can insert in the draw-in groove, when the fore-set inserts in the draw-in groove, the base plate with predetermined angle has between the frame.
5. The backlight module of claim 1, wherein: the light source parameter information comprises one or the combination of more than two of light source brightness, wavelength, light time and light frequency.
6. The backlight module of claim 1, wherein: the light guide plate is of an arc structure or a groove structure.
7. The backlight module of claim 1, wherein: the first photoluminescent layer and the second photoluminescent layer can pass through light with specific wavelength.
8. The backlight module of claim 1, wherein: the light source points can be sequentially lighted up according to a predetermined trajectory.
9. The backlight module of claim 1, wherein: the electroluminescent device comprises a first electrode plate, a second electrode plate and an insulating layer, wherein the first electrode plate and the second electrode plate are electrified to generate an electric field.
10. A traffic signal device comprising a backlight module of any one of claims 1-9 for multiple recombination of uniform light.
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| CN202010380681.4A CN111443526B (en) | 2020-05-08 | 2020-05-08 | Backlight module capable of realizing multiple composite light equalization |
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| CN202010380681.4A CN111443526B (en) | 2020-05-08 | 2020-05-08 | Backlight module capable of realizing multiple composite light equalization |
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| CN111443526B true CN111443526B (en) | 2022-06-07 |
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| CN113655659A (en) * | 2021-08-17 | 2021-11-16 | 深圳市瀚达美电子有限公司 | Vehicle-mounted miniLED backlight source module capable of adjusting brightness in real time |
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| CN105940508B (en) * | 2014-02-28 | 2019-01-11 | 松下知识产权经营株式会社 | Luminescent device and light emitting device |
| CN105704869B (en) * | 2016-04-07 | 2018-11-23 | 深圳市华星光电技术有限公司 | Electroluminescent photic mixed luminescence display device and preparation method thereof |
| CN207081917U (en) * | 2017-06-20 | 2018-03-09 | 苏州星烁纳米科技有限公司 | A kind of liquid crystal display device |
| TWI683596B (en) * | 2017-06-26 | 2020-01-21 | 財團法人工業技術研究院 | Light source apparatus and display apparatus |
| CN110204218B (en) * | 2019-05-15 | 2022-06-10 | 苏州科光光电科技有限公司 | Photoinduced luminous surface layer body |
| CN210244024U (en) * | 2019-08-29 | 2020-04-03 | 苏州科光光电科技有限公司 | Colorful self-luminous transparent display device |
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