CN109782506B - Optically variable glass and optically variable suspension display device - Google Patents
Optically variable glass and optically variable suspension display device Download PDFInfo
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- CN109782506B CN109782506B CN201910023090.9A CN201910023090A CN109782506B CN 109782506 B CN109782506 B CN 109782506B CN 201910023090 A CN201910023090 A CN 201910023090A CN 109782506 B CN109782506 B CN 109782506B
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Abstract
The invention provides an optically variable glass and an optically variable suspension display device, wherein the optically variable glass can change the refractive index of an electrochromic film by adjusting the voltage of the electrochromic film, so that the transmittance of the optically variable glass can be changed, and the optically variable glass can be widely applied to scenes. Furthermore, the optically variable glass can be applied to a suspension display device, and the purpose of adjusting the transmittance of the optically variable glass is achieved by adjusting the voltage of the electrochromic film, so that the process of gradually suspending the display main body can be dynamically realized.
Description
Technical Field
The invention belongs to the technical field of display devices, and particularly relates to optically variable glass and an optically variable suspension display device.
Background
At present, most of common product display methods adopt a fixed supporting structure to bear a display object, and the static display mode has poor visual effect and cannot effectively attract the attention of audiences. In order to improve the display effect, manufacturers apply the magnetic levitation technology to the display of some products. However, the magnetic suspension effect utilizes the principle that like poles repel each other, so a certain magnetic device must be arranged in a proper position of the exhibit to ensure the magnetic suspension effect, and the magnetic suspension display principle cannot be applied to electronic products and some articles containing magnetic conductive materials. In addition, in order to ensure the suspension effect of the exhibit in the air, the suspension body must be placed at a position where the self gravity and the repulsive force of the base are equal, that is, the display position of the suspension body is fixed, which is not only unfavorable for adjustment, but also the suspension body is susceptible to the influence of external vibration and has poor stability.
Disclosure of Invention
The invention aims to provide an optically variable glass and an optically variable suspension display device, which aim to solve the problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the optical variable glass comprises a substrate, a refractive index matching layer, an electrochromic film and an electrode layer which are sequentially arranged, wherein the refractive index matching layer comprises a plurality of layers of titanium dioxide films and silicon dioxide films, the titanium dioxide films and the silicon dioxide films are alternately arranged, and the silicon dioxide films are formed on the surface of the substrate; the electrochromic film is formed on the surface of the titanium dioxide film.
Preferably, in the optically variable glass, the electrochromic film is a tungsten oxide and vanadium oxide compound.
Preferably, in the optically variable glass, the electrode layer includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively located at two ends of the electrochromic film.
Preferably, in the optically variable glass, the refractive index of the titanium dioxide thin film in the visible light band is in the range of 2.20 to 2.56.
Preferably, in the optically variable glass, the silica thin film has a refractive index in the range of 1.45 to 1.48 in the visible light band.
Preferably, in the optically variable glass, the titania thin film and the silica thin film are each 6 layers.
Preferably, in the optically variable glass, the substrate is BK7 glass, and the refractive index of the substrate in the visible light band is in the range of 1.51 to 1.53.
Preferably, in the optically variable glass, the thickness of the electrochromic film is larger than that of the silica film.
The invention also provides an optically variable suspended display device comprising a frame structure and the optically variable glass as described above; one side surface of the frame structure is a transparent plate; the optically variable glass is mounted within the frame structure; a display body is fixed on the optically variable glass; an observer views the display body through the transparent panel.
Preferably, in the optically variable suspended display device, the frame structure is a closed structure, and the other side of the frame structure is an opaque plate.
Compared with the prior art, the invention has the advantages that: the optical variable glass can change the refractive index of the electrochromic film by adjusting the voltage of the electrochromic film, and the electrochromic film is matched with the refractive index matching layer, so that the transmittance of the optical variable glass can be changed, and the application scene is wide.
Furthermore, the optically variable glass can be applied to a suspension display device, and the purpose of adjusting the transmittance of the optically variable glass is achieved by adjusting the voltage of the electrochromic film, so that the process of gradually suspending the display main body can be dynamically realized.
Drawings
FIG. 1 is a cross-sectional view of the structure of the optically variable glass in this embodiment;
FIG. 2 is a graph showing the transmittance of light in the visible light band of the optically variable glass when the power is not applied in the present embodiment;
FIG. 3 is a graph showing the transmittance of light in the visible light band of the optically variable glass when a saturation voltage is applied in the present embodiment;
FIG. 4 is a schematic structural diagram of the optically variable levitation display device in this embodiment;
fig. 5 is a side view of the optically variable suspended display device of this embodiment.
Wherein, 1-a frame structure; 2-optically variable glass; 3-a display body; 4-a transparent plate; 21-a substrate; 22-a silicon dioxide film; 23-a titanium dioxide film; 24-electrochromic films; 25-electrode, 26-negative electrode.
Detailed Description
The optically variable glass and optically variable suspended display device of the present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous results of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1, in the present embodiment, an optically variable glass is proposed, which includes a substrate 21, an index matching layer, an electrochromic film 24 and an electrode layer, which are sequentially disposed, wherein the index matching layer includes a plurality of titanium dioxide films 23 and silicon dioxide films 22, the titanium dioxide films 23 and the silicon dioxide films 22 are alternately arranged, and the silicon dioxide films 22 are formed on the surface of the substrate 21; the electrochromic film 24 is formed on the surface of the titanium dioxide film 23.
Wherein, the refractive index range of the titanium dioxide film 23 in the visible light wave band is 2.20-2.56. The silica thin film 22 has a refractive index in the visible light band ranging from 1.45 to 1.48. The titania thin film 23 and the silica thin film 22 each have 6 layers. The substrate 21 is BK7 glass, and the refractive index of the substrate 21 in the visible light waveband ranges from 1.51 to 1.53. The electrode layers include a positive electrode 25 and a negative electrode 26, and the positive electrode 25 and the negative electrode 26 are respectively located at two ends of the electrochromic film 24.
The electrochromic film 24 is a tungsten oxide compound and a vanadium oxide compound, and the refractive index of the electrochromic film 24 can be reversibly changed under the action of an external electric field, so that the light transmittance of the electrochromic film can be changed. The refractive index of the electrochromic film 24 in the visible light band is 5.54 to 7.03 in the non-energized state, and when a voltage is applied to the electrochromic film 24 to a saturation voltage, the refractive index of the electrochromic film 24 in the visible light band becomes 1.82 to 2.28.
Specifically, when the optically variable glass 2 is manufactured, 6 layers of alternately arranged silica thin films 22 and titania thin films 23 are first plated on a substrate 21 by means of electron beam evaporation, an electrochromic thin film 24 is then formed on the surface of the titania thin film 23, and finally a positive electrode 25 and a negative electrode 26 are formed on the surface of the electrochromic thin film 24.
In the present embodiment, the thicknesses of the silica 22 and the titania thin film 23 in the index matching layer from bottom to top are 89nm, 33nm, 7nm, 70nm, 33nm, 13nm, 129nm, 15nm, 33nm, 123nm, 16nm, and 8nm, respectively. The thickness of the electrochromic film 24 is greater than that of the silica film 22, wherein the thickness of the electrochromic film 24 is 200 nm.
The transmittance of the optically variable glass obtained according to the above given material parameters at different voltages in the visible light band is shown in fig. 2 and 3, where fig. 2 corresponds to the case when the positive electrode 25 and the negative electrode 26 on the electrochromic film 24 are not energized, and it can be seen that the transmittance of the optically variable glass is lower than 40% throughout the visible light band at this time, so that the presence of the optically variable glass can be clearly seen; fig. 3 corresponds to the case where the positive electrode 25 and the negative electrode 26 of the electrochromic film 24 are applied with saturation voltage, and the transmittance of the optically variable glass in the entire visible light band is about 95%, and the optically variable glass "disappears" visually.
In this embodiment, an optically variable suspended display device is also proposed, as shown in fig. 4 and 5, the device comprising a frame structure 1 and an optically variable glass 2 as above; a transparent plate 4 is arranged on one side surface of the frame structure 1; the optically variable glass 2 is mounted within the frame structure 1; the display body 3 is fixed on the optical variable glass 2; the observer views the display body 3 through the transparent plate 4 and the optically variable glass 2, i.e. the display body 3 is fixed on the optically variable glass 2 on the side close to the transparent plate 4. In fig. 5, the arrows indicate the observation direction of the observer.
Wherein, the frame structure 1 is a closed structure, and other sides of the frame structure 1 can be opaque plates. A clamping groove (not shown) for mounting the optically variable glass 2 is provided on the frame structure 1. The clamping groove penetrates through the lower surface of the frame structure 1, and the optical variable glass 2 is convenient to mount.
In the present embodiment, the optically variable glass 2 is disposed parallel to the transparent plate 4. The transparent plate 4 is a transparent glass plate with high transmittance and is opposite to the front side of the display main body 3, so that an observer can observe the display main body 3 conveniently, and simultaneously, the display main body 3 is optimized to show a dynamic visual effect which is changed from being attached to the optically variable glass 2 to being suspended in the air.
Specifically, the frame structure 1 is rectangular, and the periphery of the frame structure is sealed by flat plates so as to isolate the display main body 3 from an observer, thereby achieving the purpose of protecting the exhibit. Meanwhile, the observer can observe the dynamic visual effect of the display main body 3 only in the visual area of the transparent plate, and other factors interfering with vision are eliminated. If the opaque plate hides the outer edge of the optically variable glass 2, the observer cannot observe the outer edge of the optically variable glass 2 in the process of dynamic change of the transmittance of the optically variable glass 2, and only the surface of the optically variable glass 2 and the dynamic change of the surface of the optically variable glass 2 exist in the visual range, so that visual interference on the surface of the optically variable glass 2 caused by the change of the outer edge of the optically variable glass 2 is avoided, and the dynamic visual effect is optimized to form the suspension effect.
In addition, when the show main part 3 quality is lighter, accessible bonding's mode is fixed on optically variable glass 2, easy operation, stability are good and do not have the restriction to the classification of showpiece, therefore have that the bandwagon effect is good, implement advantages such as convenient, range of application is wide, be applied to the appeal that the showpiece can be promoted greatly in the show field. In addition, the opaque plate can also hide the fixed position and the fixed component of the display main body 3, and can also optimize the dynamic visual effect.
As can be seen from the above, the optically variable suspended display device proposed in this embodiment employs the optically variable glass 2, when the electrodes on the electrochromic film 24 are not energized, the transmittance of the electrode in the visible light band is lower than 40%, the transparent plate of the frame structure 1 can observe that the display main body 3 is fixed on the optically variable glass 2, when the voltage is gradually increased, the transmittance of the optically variable glass 2 is gradually increased to about 95%, and at this time, the existence of the optically variable glass 2 is basically invisible, so that the effect of suspending the display main body 3 is achieved. When an observer observes the display main body 3, the optical variable glass 2 supporting the exhibit realizes a change process from existence to nonexistence, and the display main body 3 shows a dynamic visual effect gradually changed from being attached to the optical variable glass 2 to being suspended in the air, so that the eyeballs of the audience can be effectively attracted, and the purposes of pushing the exhibit and improving the display effect are achieved.
In summary, in the optically variable glass and the optically variable suspension display device provided in the embodiments of the present invention, since the refractive index of the electrochromic film 24 is electrically controlled and adjustable, the refractive index of the electrochromic film 24 changes with the change of the applied voltage, and the electrochromic film 24 with a dynamically changing refractive index cooperates with the silica film 22 and the titania film 23, so as to achieve the dynamic change of the transmittance of the optically variable glass 2.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. An optically variable suspended display device comprising a frame structure and optically variable glass; one side surface of the frame structure is a transparent plate; the optically variable glass is mounted within the frame structure; a display body is fixed on the optically variable glass; an observer views the display body through the transparent plate;
the optical variable glass comprises a substrate, a refractive index matching layer, an electrochromic film and an electrode layer which are sequentially arranged, wherein the refractive index matching layer comprises a plurality of layers of titanium dioxide films and silicon dioxide films, the titanium dioxide films and the silicon dioxide films are alternately arranged, and the silicon dioxide films are formed on the surface of the substrate; the electrochromic film is formed on the surface of the titanium dioxide film;
the electrochromic film is a tungsten oxide and vanadium oxide compound;
the electrode layer comprises a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively positioned at two ends of the electrochromic film;
the refractive index range of the titanium dioxide film in a visible light wave band is 2.20-2.56;
the refractive index range of the silicon dioxide film in a visible light wave band is 1.45-1.48;
the thicknesses of the silicon dioxide and the titanium dioxide film in the refractive index matching layer from bottom to top are 89nm, 33nm, 7nm, 70nm, 33nm, 13nm, 129nm, 15nm, 33nm, 123nm, 16nm and 8nm respectively;
the substrate is BK7 glass, and the refractive index range of the substrate under a visible light waveband is 1.51-1.53;
the thickness of the electrochromic film is larger than that of the silicon dioxide film, and the thickness of the electrochromic film is 200 nm.
2. The optically variable suspended display device of claim 1, wherein the frame structure is an enclosed structure and the other sides of the frame structure are opaque panels.
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| CN201910023090.9A CN109782506B (en) | 2019-01-10 | 2019-01-10 | Optically variable glass and optically variable suspension display device |
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| CN201910023090.9A CN109782506B (en) | 2019-01-10 | 2019-01-10 | Optically variable glass and optically variable suspension display device |
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| CN109782506B true CN109782506B (en) | 2021-08-03 |
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