CN113436553A - Display panel - Google Patents
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- CN113436553A CN113436553A CN202110795251.3A CN202110795251A CN113436553A CN 113436553 A CN113436553 A CN 113436553A CN 202110795251 A CN202110795251 A CN 202110795251A CN 113436553 A CN113436553 A CN 113436553A
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- China
- Prior art keywords
- guide plate
- groove structure
- light guide
- display panel
- light
- Prior art date
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Images
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
- F21S9/037—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit and the lighting unit being located within or on the same housing
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The embodiment of the invention discloses a display panel, which comprises: the light guide plate comprises a first surface, a second surface and a first side face, wherein the first surface and the second surface are oppositely arranged, the first side face is connected with the first surface and the second surface, and the first surface of the light guide plate is provided with at least one groove structure; and the light rays emitted by the light source component are emitted out through the groove structure of the light guide plate. In the embodiment of the invention, the light source component is arranged on the side surface of the light guide plate, the luminous power and the power consumption of the light source component are both small, and the cost is reduced, so that the display panel is suitable for being integrated in a circuit with low power supply and is convenient to integrate with a photovoltaic component; can set up the pattern that groove structure formed wantonly, and then make display panel show the pattern that corresponds with groove structure, whether according to the luminous of light source subassembly, can realize the dynamic display of the pattern that groove structure corresponds, groove structure can constitute the traffic marking when using in the road and with this can realize the dynamic display of road traffic marking.
Description
Technical Field
The embodiment of the invention relates to a display technology, in particular to a display panel.
Background
The road traffic sign includes traffic safety facilities formed by various lines, arrows, characters, elevation marks and the like marked on the road surface, has the functions of controlling and guiding traffic, and has very important functions of improving the traffic capacity of roads, improving traffic flow driving conditions, reducing traffic accidents, protecting personnel and vehicle safety. The clear road traffic sign can make drivers and pedestrians form good conditioned reflex, effectively reduce traffic accidents and improve road traffic efficiency.
The existing road traffic sign needs to be drawn frequently by manpower to ensure that the road traffic sign is clear and visible, and obviously, the labor consumption is large.
Disclosure of Invention
The embodiment of the invention provides a display panel to realize dynamic display of a road traffic sign.
An embodiment of the present invention provides a display panel, including:
the light guide plate comprises a first surface and a second surface which are oppositely arranged and a first side face which connects the first surface and the second surface, and the first surface of the light guide plate is provided with at least one groove structure;
and the light source assembly is positioned on the first side surface of the light guide plate, and light rays emitted by the light source assembly are emitted out through the groove structure of the light guide plate.
Further, the depth of the groove structure is less than or equal to 1/2 of the perpendicular distance from the first surface to the second surface.
Further, the groove structure comprises a notch and a groove bottom which are opposite, the notch of the groove structure is flush with the first surface, and the orthographic projection of the groove bottom of the groove structure on the first surface is located in the notch of the groove structure.
Further, the cross-sectional shape of the groove structure taken through a first cross-section is triangular, semicircular, trapezoidal or rectangular, and the first cross-section is perpendicular to the first surface.
Further, still include:
and the photovoltaic cell layer is positioned on the second surface of the light guide plate and used for converting received external light into electric energy and supplying power to the light source assembly so as to enable the display panel to display.
Further, still include: and the electric energy storage unit is electrically connected with the photovoltaic cell layer and is used for storing the electric energy generated by the photovoltaic cell layer.
Further, still include:
and the transparent wearing layer is positioned on the first surface of the light guide plate, and is used for enabling light rays emitted through the groove structure of the light guide plate to penetrate through and bearing surface layer wearing in the driving process.
Furthermore, the pattern formed by the groove structure on the light guide plate is a traffic marking, and the traffic marking comprises one or more of a pedestrian crossing marking, a dotted marking, a solid marking, a straight marking, a reverse marking, a turning marking, a steering marking and a no-go marking.
According to the display panel provided by the embodiment of the invention, the light source assembly is arranged on the side surface of the light guide plate, the light incident direction of the light guide plate is in a side light incident type, and the number of the light source assemblies is small, so that the luminous power and the power consumption of the light source assembly are both small, the cost is reduced, and the display panel is suitable for being integrated in a circuit with low power supply and is convenient to be integrated with a photovoltaic assembly. In addition, the groove structure has a light leakage effect, so that patterns formed by the groove structure can be randomly arranged, and the display panel can display the patterns corresponding to the groove structure. On the other hand, when the light source component emits light, the display panel displays the patterns corresponding to the groove structures, when the light source component does not emit light, the display panel does not emit light, dynamic display of the patterns corresponding to the groove structures can be achieved, and when the light source component is applied to a road, the groove structures can form traffic marking lines, so that dynamic display of the road traffic marking lines can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 7 is a diagram of a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 9 is a diagram of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a display panel according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of a display panel according to an embodiment of the present invention. The display panel includes: the light guide plate comprises a light guide plate 10, wherein the light guide plate 10 comprises a first surface 101 and a second surface 102 which are oppositely arranged and a first side surface 103 connecting the first surface 101 and the second surface 102, and the first surface 101 of the light guide plate 10 is provided with at least one groove structure 104; the light source assembly 20 is disposed at the first side surface 103 of the light guide plate 10, and light emitted from the light source assembly 20 exits through the groove structure 104 of the light guide plate 10.
In this embodiment, the optional light guide plate 10 is a flat plate, the light source assembly 20 is disposed at a side portion of the light guide plate 10, and the light guide plate 10 is of a side light-entering type according to the light-entering direction, that is, the light source assembly 20 is disposed at the side portion of the light guide plate 10. Specifically, the light guide plate 10 includes a first surface 101 and a second surface 102 disposed opposite to each other, and a first side surface 103 connecting the first surface 101 and the second surface 102, where the first surface 101 and the second surface 102 disposed opposite to each other of the light guide plate 10 refer to two surfaces of a flat plate of the light guide plate 10, and the first side surface 103 connecting the first surface 101 and the second surface 102 of the light guide plate 10 refers to one side surface of the flat plate of the light guide plate 10. The flat plate of the light guide plate 10 has a plurality of side surfaces, and the optional first side surface 103 is any one of the flat plates of the light guide plate 10 on which the light source assembly 10 may be disposed.
It is understood that the light guide plate includes a plurality of sides, and in other embodiments, the light source assembly may be disposed on the plurality of sides of the light guide plate.
The light source assembly 20 is a display light source of the display panel, the light source assembly 20 is disposed at a position corresponding to the first side surface 103 of the light guide plate 10, the light source assembly 20 can be selected to be a lamp tube or a plurality of light emitting diodes, and light emitted by the light source assembly 20 is emitted through the groove structure 104 of the light guide plate 10. It can be understood that the light source assembly may also be disposed below the second surface of the light guide plate, and the light incident direction of the light guide plate is a straight type.
In the embodiment, the light guide plate 10 absorbs the light emitted from the light source assembly 20 from the side, and the light propagates in the light guide plate 10 and is totally reflected in the planar area of the light guide plate surface, so that the light is constrained in the planar area of the light guide plate 10 and cannot propagate out. I.e., the planar area of the light guide plate 10, light leakage does not occur.
The first surface 101 of the light guide plate 10 is further provided with a groove structure 104, the groove structure 104 is a notch formed by etching the first surface 101 of the light guide plate 10, all the notches on the light guide plate 10 are the groove structure 104, and the light guide plate 10 includes one or more groove structures 104. Obviously, the area corresponding to the groove structure 104 of the light guide plate 10 is a non-planar area of the light guide plate 10. When light propagates through the light guide plate 10, the light is totally reflected when entering the planar area of the light guide plate 10, and does not leak light. When light propagates in the light guide plate 10, when the light enters the non-planar area of the light guide plate 10, that is, each groove structure 104, since the area of the first surface 101 of the light guide plate 10 corresponding to the groove structure 104 is no longer a plane, the light does not generate a total reflection effect, but the light is scattered from the groove structure 104, and a light leakage effect is generated at the position of the groove structure 104.
Based on this, the groove structure 104 of the light guide plate 10 can form various patterns, and based on the light leakage effect of the groove structure 104 of the light guide plate 10, the display panel can display the pattern of the groove structure 104 of the light guide plate 10 when displaying. For example, the groove structure 104 of the light guide plate 10 is a bar-shaped groove, and the display panel can display a bar-shaped pattern when displaying; each groove structure 104 of the light guide plate 10 forms an arrow pattern, and the display panel can display an arrow when displaying.
When the display panel is applied to road traffic, the groove structure 104 of the light guide plate 10 may form various traffic marking patterns. When the light source assembly 20 is turned off, the display panel does not emit light, and the traffic sign is hidden. When the light source assembly 20 emits light, there will be total reflection light guided in the light guide plate 10, and when the light guided reaches the position of the groove structure 104, the light leakage effect of the notch makes the groove structure 104 of the light guide plate 10 emit light, so that the display panel displays a traffic marking pattern formed by the groove structure 104. Therefore, road surface display and dynamic display of traffic marking are realized. The first surface of the light guide plate and the road surface are located on the same side.
Taking the pedestrian crossing as an example, the pedestrian crossing is used as a special marking line for pedestrians to cross the road when the traffic is forbidden. However, whether the pedestrian can cross the road or not is controlled by the traffic light, and the pedestrian can cross the road only when the traffic light is green, but the pedestrian usually ignores the traffic signal and directly crosses the pedestrian crossing, which causes unnecessary traffic accidents. In the embodiment, the patterns arranged on the light guide plate are pedestrian crossing marking patterns, the light source assembly is closed in the driving time, and the pedestrian crossing markings disappear; when the sequence of people turns to, the light source component is opened, the groove structure of the light guide plate emits light rays, and the formed patterns are marked lines of the pedestrian crossing. The change of the road surface shape reminds pedestrians to walk or refuse to pass through the pedestrian crossing, and the safety of the pedestrian crossing is improved.
It can be understood that the display panel is provided with a control module, and the control module controls whether the light source assembly emits light or not. When the display panel is applied to road traffic, the control module is controlled by a road traffic remote control system, and the traffic control safety is guaranteed.
The optional light guide plate 10 is made of optical grade acrylic/PC plates, and the optical grade acrylic/PC plates have extremely high reflectivity and do not absorb light, so that the light rays emitted by the light source assembly 20 can be prevented from being lost in the light guide plate 10, and the light utilization rate is improved. The optical acrylic/PC board is also suitable for etching by using etching techniques such as laser engraving, V-shaped cross grid engraving, etc. to form the groove structure 104 on the first surface 101 of the light guide plate 10. The light in the light guide plate 10 may be diffused at various angles, and when the light strikes each of the groove structures 104, the groove structures 104 may destroy the total reflection condition to enable the light to be emitted from the front surface of the groove structures 104 of the light guide plate 10, so that the display panel displays the display pattern formed by the groove structures 104.
It is understood that the light guide plate 10 includes, but is not limited to, the above-mentioned materials, and any material of the light guide plate falls within the scope of the present invention. The groove structure in the light guide plate is formed by etching corresponding patterns at corresponding positions on the light guide plate by a laser ablation method, and installing a light emitting diode at one side edge of the light guide plate. It can be understood that when the display panel is applied to road traffic, the cluster of the road traffic marking can be etched in the light guide plate, so that the light leakage effect of the laser nicks can be utilized to realize pattern display, in particular to the display of the road traffic marking.
According to the display panel provided by the embodiment of the invention, the light source assembly is arranged on the side surface of the light guide plate, the light incident direction of the light guide plate is in a side light incident type, and the number of the light source assemblies is small, so that the luminous power and the power consumption of the light source assembly are both small, the cost is reduced, and the display panel is suitable for being integrated in a circuit with low power supply and is convenient to be integrated with a photovoltaic assembly. In addition, the groove structure has a light leakage effect, so that patterns formed by the groove structure can be randomly arranged, and the display panel can display the patterns corresponding to the groove structure. On the other hand, when the light source component emits light, the display panel displays the patterns corresponding to the groove structures, when the light source component does not emit light, the display panel does not emit light, dynamic display of the patterns corresponding to the groove structures can be achieved, and when the light source component is applied to a road, the groove structures can form traffic marking lines, so that dynamic display of the road traffic marking lines can be achieved.
Illustratively, based on the above technical solution, the depth H of the optional groove structure 104 shown in fig. 2 is less than or equal to 1/2 of the vertical distance from the first surface 101 to the second surface 102. The depth H of the groove structure 104 refers here in particular to the largest dimension of the groove structure 104 in the direction of the first surface 101 pointing to the second surface 102. If the depth H of the groove structure 104 is greater than 1/2 of the vertical distance from the first surface 101 to the second surface 102, the depth H of the groove structure 104 on the first surface 101 of the light guide plate 10 is greater, which may cause the light guide plate 10 to be easily broken, or the light in the light guide plate 10 directly exits from the groove structure 104 and cannot continue to propagate to reach the next groove structure 104. Therefore, the depth H of the groove structure 104 is less than or equal to 1/2 of the vertical distance from the first surface 101 to the second surface 102, which not only can ensure the quality of the light guide plate 10 and avoid breakage, but also can make the light continue to propagate on the light guide plate 10 and avoid the groove structure 104 from intercepting the propagation of the light.
It is understood that in other embodiments, the depth of the groove structure is greater than 1/2 of the vertical distance from the first surface to the second surface and less than or equal to the vertical distance from the first surface to the second surface, which is also selected on the basis of ensuring the quality of the light guide plate.
Illustratively, based on the above technical solution, as shown in fig. 2, the optional groove structure 104 includes opposite notches and groove bottoms, the notch of the groove structure 104 is flush with the first surface 101, and an orthographic projection of the groove bottom of the groove structure 104 on the first surface 101 is located in the notch of the groove structure 104. In this embodiment, the groove structure 104 includes a groove opening and a groove bottom, the groove opening of the groove structure 104 is flush with the first surface 101, and the groove bottom of the groove structure 104 extends inside the light guide plate 10, so that an included angle θ between a side wall 104a of the groove structure 104 connecting the groove opening and the groove bottom and the first surface 101 is not a right angle, and at this time, light propagating in the light guide plate 10 is easily emitted from the side wall 104a of the groove structure 104 after being reflected by the second surface 102.
In this embodiment, an orthographic projection of the groove bottom of the groove structure 104 on the first surface 101 is located in the notch of the groove structure 104. When the light propagates through the light guide plate 10 by total reflection, the light is reflected by the second surface 102 and reaches the sidewall 104a of the groove structure 104, and the reflected light forms a non-zero angle with the sidewall 104a of the groove structure 104, so that the reflected light can exit from the sidewall 104a of the groove structure 104. When the light propagates through the light guide plate 10 by total internal reflection, the light is reflected by the first surface 101 and reaches the sidewall 104a of the groove structure 104, and if the reflected light forms a non-zero angle with the sidewall 104a of the groove structure 104, the reflected light can exit from the sidewall 104a of the groove structure 104.
It will be appreciated that in other embodiments, it is also optional as shown in fig. 3 that the orthographic projection of the groove bottom of the groove structure 104 on the first surface 101 overlaps or covers the notch of the groove structure 104. At this time, the light can also exit through the sidewall 104a of the groove structure 104, and the light extraction efficiency is related to the arrangement of the sidewall 104a and the size of the notch. It can also be understood that when the included angle between the side wall surface of the connecting notch of the groove structure and the groove bottom and the first surface is a right angle, the light rays propagating in the light guide plate can also be emitted from the side wall of the groove structure.
In the embodiment of the invention, the relative position relationship between the groove bottom and the notch of the groove structure is not limited, as long as the light rays totally reflected and propagated in the light guide plate can be emitted through the groove structure.
Illustratively, based on the above technical solution, the cross-sectional shape of the optional groove structure 104 as shown in fig. 4 to 7 is a triangle, a semicircle, a trapezoid or a rectangle, taken through a first cross-section, which is perpendicular to the first surface 101.
The cross-sectional shape of the groove structure 104 taken through the first cross-section as shown in fig. 1 is triangular. It should be noted that, when the cross-sectional shape of the groove structure 104 cut by the first cross-section is a triangle, the shape of the groove structure 104, that is, the structure etched in the light guide plate 10, may be a cone, a polygon, or other structures, and it is understood that any groove structure with a triangular cross-sectional shape falls within the protection scope of the present invention.
As shown in fig. 4, the cross-sectional shape of the groove structure 104 taken through the first cross-section is a trapezoid, and the shape of the groove structure 104, that is, the structure etched in the light guide plate 10, may be a trapezoid with a small upper part and a large lower part, and it can be understood that any groove structure with a trapezoid cross-sectional shape falls within the protection scope of the present invention. As shown in fig. 4, the groove bottom of the groove structure 104 overlaps the notch in an orthogonal projection of the first surface 101.
As shown in fig. 5, the cross-sectional shape of the groove structure 104 cut through the first cross-section is a trapezoid, and the shape of the groove structure 104, that is, the structure etched in the light guide plate 10, may be a trapezoid, a frustum, or the like, and it can be understood that any groove structure with a trapezoid cross-sectional shape falls within the scope of the present invention. As shown in fig. 5, an orthographic projection of the groove bottom of the groove structure 104 on the first surface 101 is located within the groove opening.
As shown in fig. 6, the cross-sectional shape of the groove structure 104 taken through the first cross-section is a semi-circle, and the shape of the groove structure 104, i.e., the structure etched in the light guide plate 10, may be a semi-sphere, etc., and it can be understood that any groove structure with a semi-circle cross-sectional shape falls within the scope of the present invention.
As shown in fig. 7, the cross-sectional shape of the groove structure 104 cut through the first cross-section is a rectangle, and the shape of the groove structure 104, i.e., the structure etched in the light guide plate 10, may be a cuboid, a cube, or the like, and it can be understood that any groove structure with a rectangular cross-sectional shape falls within the protection scope of the present invention.
As described above, when the groove bottom of the groove structure 104 overlaps the groove structure 104 in the orthographic projection of the first surface 101, the sidewall 104a of the groove structure 104 is not parallel to the first surface 101, and when the light is totally reflected and propagated inside the light guide plate 10, and the light is reflected by the first surface 101 and/or the second surface 102 and reaches the sidewall 104a of the groove structure 104, the reflected light forms a non-zero angle with the sidewall 104a of the groove structure 104, so that the reflected light can exit from the sidewall 104a of the groove structure 104. The light leakage effect of the region corresponding to the groove structure 104 is realized.
Exemplarily, on the basis of the above technical solution, the selectable display panel shown in fig. 8 further includes: and a photovoltaic cell layer 30 disposed on the second surface 102 of the light guide plate 10, wherein the photovoltaic cell layer 30 is used for converting received external light into electric energy and supplying power to the light source assembly 20, so as to enable the display panel to display.
In this embodiment, the photovoltaic cell layer 30 is formed by photovoltaic cells, the light guide plate 10 is a transparent substrate and can allow external light to penetrate through, and the photovoltaic cell layer 30 can receive solar radiation energy penetrating through the light guide plate 10 and convert the solar radiation energy into electric energy to be supplied to the light source assembly 20. The optional photovoltaic cell is packaged by polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin, polyurethane and polyamide transparent thermoplastic elastomer by a hot lamination process. By using the photovoltaic cell layer 30 as the power supply terminal of the light source assembly 20, the wiring of the display device can be reduced, and the self-sustaining of the power can be realized, so that the display device can operate in a scene separated from the power grid. It should be noted that, in the present embodiment, the display panel is a structure in which the light source assembly 20 and the light guide plate 10 are combined, and the light source assembly 20 has small luminous power and small power consumption, so that it can be integrated with a photovoltaic cell layer to realize self-sustaining of electric power.
As shown in fig. 8, the method may further include: and the electric energy storage unit 40 is electrically connected with the photovoltaic cell layer 30, and is used for storing the electric energy generated by the photovoltaic cell layer 30.
In this embodiment, the electric energy storage unit 40 is electrically connected to the photovoltaic cell layer 30, and is configured to receive and store the electric energy generated by the photovoltaic cell layer 30. Specifically, after the photovoltaic cell layer 30 provides the light source assembly 20 with the required electric energy, if there is surplus electric energy, the electric energy storage unit 40 may store the surplus electric energy, and provide the electric energy to the light source assembly 20 as a power supply under the condition of no solar radiation, so that the display panel can realize dynamic display under any weather conditions. If the display panel is integrated in road traffic, the electric energy storage unit 40 can ensure dynamic display of the road traffic sign of the display panel under all weather and any weather conditions, thereby improving driving safety.
In addition, the optional electric energy storage unit is respectively electrically connected with the photovoltaic cell layer and the light source component, the electric energy converted from the photovoltaic cell layer can be supplied to the light source component through the electric energy storage unit, namely, the electric energy generated by the photovoltaic cell layer is completely supplied to the electric energy storage unit, the electric energy storage unit supplies required electric energy to the light source component, the electric energy storage unit can effectively and timely acquire the electric energy generated by the photovoltaic cell layer and timely store surplus electric energy, and the utilization efficiency of the electric energy is improved.
Optionally, a voltage-current conversion device is further arranged between the photovoltaic cell layer and the light source assembly, and the voltage-current conversion device is used for converting voltage and current provided by the photovoltaic cell layer, the electric energy storage unit or an external power supply into voltage and current matched with the light source assembly, so that the light source assembly can conveniently perform light emitting display.
Based on this, when the display panel is applied to road traffic, the working process of the display panel comprises the following steps: in the sunshine time period, the photovoltaic cell layer stores the electric energy generated by the solar cell in the electric energy storage unit, the electric energy storage unit is converted into the voltage current required by the light source assembly through the voltage current conversion device, and the electric energy is provided for the light source assembly when the light source assembly needs to display, so that the light source assembly works and stores the redundant electric energy. In the no-sunlight time period, the photovoltaic cell layer does not charge the electric energy storage unit any more, and the electric energy stored by the electric energy storage unit is continuously supplied to the electric energy required by the work of the light source component.
The optional display panel shown in fig. 9 further includes: the transparent abrasion layer 50 is located on the first surface of the light guide plate 10, and the transparent abrasion layer 50 is used for allowing light rays emitted through the groove structure 104 of the light guide plate 10 to penetrate through and is also used for bearing surface abrasion in a driving process. Optionally, the pattern formed by the groove structure 104 on the light guide plate 10 is a traffic marking, and the traffic marking includes one or more of a pedestrian crossing marking, a dotted marking, a solid marking, a straight marking, a reverse marking, a turning marking, a steering marking and a no-go marking.
In this embodiment, the selectable display panel may be integrated in road traffic, and applied as a road surface display assembly or a roadside display assembly. When used as a pavement display assembly, the display panel is placed on a road surface and may be crushed by a vehicle, based on which the optional display panel further includes a transparent wear layer 50. The transparent abrasion layer 50 has a transparent characteristic, so that most of light emitted from the light guide plate 10 can be transmitted through the transparent abrasion layer, and a display effect is ensured. Meanwhile, the transparent wearing layer 50 is also used for bearing surface layer wearing in the driving process, so that the wearing of the vehicle to the surface of the display panel is reduced, and the structure of the display panel is protected. The display panel may be attached directly to the surface of the road traffic or may be placed in the road, i.e. the surface of the transparent wearing layer 50 is flush with the surface of the road.
Optionally, the material of the transparent wearing layer 50 includes a transparent polymer and a transparent rigid aggregate. The optional transparent polymer comprises one or more of polyurethane, epoxy resin, acrylic resin, epoxy modified acrylic resin, organic silicon resin, polycarbonate and petroleum resin high molecular materials; the transparent rigid aggregate comprises one or more of quartz sand, fused quartz particles and glass particles.
The optional display panel further comprises a first substrate 60, the first substrate 60 being located on a side of the photovoltaic cell layer 30 facing away from the light guide plate 10. The first substrate 60 may be an insulating flexible substrate or a rigid substrate. Display panel sets up on the road surface to first base plate 60 is the bearing part, can protect the structure in the display panel, avoids structures such as display panel's luminous function rete to be rolled the damage by the vehicle. The flexible characteristic of the flexible substrate can effectively relieve the edges and corners of the pavement structure and protect the display panel; the rigid characteristic of the rigid substrate can provide effective rigid support for the structure on the rigid substrate, and the protective effect is achieved. In the invention, the thickness and the material of the first substrate are not limited, and related practitioners can reasonably select the material and the thickness of the first substrate on the basis of ensuring that the luminescent functional layer is not damaged by the pavement structure.
The display panel shown in fig. 10 may further include: and an impact encapsulation layer 70 between the light guide plate 10 and the transparent abrasion layer 50, wherein the impact encapsulation layer 70 serves to encapsulate the light guide plate 10 and the light source assembly 20, to disperse vehicle impact stress transmitted by the transparent abrasion layer 50, and to prevent impurities such as water from entering the inside of the display panel. In this embodiment, the display panel is applied to a road traffic system, and the vehicle not only has abrasion to the display panel, but also has a large impact stress, and based on this, the impact packaging layer 70 that is provided can disperse the road surface impact stress transmitted by the transparent abrasion layer 50, and can also package the display panel, thereby improving the service life of the display panel.
The display panel that this embodiment provided, forms such as accessible are attached or the holding set up in high load road surface, and display panel's demonstration changes, has realized dynamic road traffic marking, improves the security.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A display panel, comprising:
the light guide plate comprises a first surface and a second surface which are oppositely arranged and a first side face which connects the first surface and the second surface, and the first surface of the light guide plate is provided with at least one groove structure;
and the light source assembly is positioned on the first side surface of the light guide plate, and light rays emitted by the light source assembly are emitted out through the groove structure of the light guide plate.
2. The display panel of claim 1, wherein the depth of the groove structure is less than or equal to 1/2 of the perpendicular distance from the first surface to the second surface.
3. The display panel of claim 1 wherein the groove structure includes opposing notches and a groove bottom, the notches of the groove structure being flush with the first surface, the orthographic projection of the groove bottom of the groove structure at the first surface being located within the notches of the groove structure.
4. A display panel as claimed in claim 1 or 3 characterized in that the groove structure has a cross-sectional shape of a triangle, a semicircle, a trapezoid or a rectangle taken through a first cross-section, which is perpendicular to the first surface.
5. The display panel according to claim 1, further comprising:
and the photovoltaic cell layer is positioned on the second surface of the light guide plate and used for converting received external light into electric energy and supplying power to the light source assembly so as to enable the display panel to display.
6. The display panel according to claim 5, further comprising: and the electric energy storage unit is electrically connected with the photovoltaic cell layer and is used for storing the electric energy generated by the photovoltaic cell layer.
7. The display panel according to claim 5, further comprising:
and the transparent wearing layer is positioned on the first surface of the light guide plate, and is used for enabling light rays emitted through the groove structure of the light guide plate to penetrate through and bearing surface layer wearing in the driving process.
8. The display panel of claim 1, wherein the pattern formed by the groove structures on the light guide plate is a traffic marking, and the traffic marking comprises one or more of a crosswalk marking, a dashed marking, a solid marking, a straight marking, a reverse marking, a u-turn marking, a turning marking, and a no-walk marking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795251.3A CN113436553A (en) | 2021-07-14 | 2021-07-14 | Display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110795251.3A CN113436553A (en) | 2021-07-14 | 2021-07-14 | Display panel |
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| CN113436553A true CN113436553A (en) | 2021-09-24 |
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| CN202110795251.3A Pending CN113436553A (en) | 2021-07-14 | 2021-07-14 | Display panel |
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| US11852856B1 (en) * | 2022-11-18 | 2023-12-26 | Wistron Corporation | Electronic device |
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