CN115933214A - Photoinduced excitation three-dimensional imaging device and manufacturing method thereof - Google Patents
Photoinduced excitation three-dimensional imaging device and manufacturing method thereof Download PDFInfo
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Abstract
The application provides a photoinduced excitation stereo imaging device and a manufacturing method thereof, and relates to the technical field of projection stereo imaging equipment. The manufacturing method comprises the following steps: preparing a graphene film on a metal substrate, and stripping the metal substrate to obtain a single-layer graphene film; and paving a layer of adhesive on the single-layer graphene film, then paving the quantum dot particle array, filling the adhesive in gaps of the quantum dot particles after the quantum dot particles are solidified, irradiating by adopting an ultraviolet lamp, finally paving the single-layer graphene film on the upper layer of the quantum dot particles, and repeatedly and circularly paving the single-layer graphene film and the quantum dot particle array to obtain the gel array containing the quantum dot particles. The application prepares a high-quality stereoscopic projection "screen", and this "screen" is a transparent cube that is full of nanometer transparent granule, but a quick activation nanometer transparent granule constitutes the image, realizes real naked eye stereoeffect, and the transparency is good, and image brightness is high, does not rely on the environment.
Description
Technical Field
The application relates to the technical field of projection stereoscopic imaging equipment, in particular to a photoinduced excitation stereoscopic imaging device and a manufacturing method thereof.
Background
The existing stereo projection is divided into active stereo projection and passive stereo projection, but the active stereo projection has great technical defects, so most of the active stereo projection is passive stereo projection. Passive stereoscopic projection puts high demands on the polarization of the screen, and for the selection of the screen, we first exclude the white plastic screen and the glass bead screen. Because the white plastic screen and the glass bead screen do not have polarization, the light reflection principle sets that the white plastic screen and the glass bead screen cannot meet the requirement of passive stereoscopic projection.
In addition to the high requirement for the polarization of the screen, the stereoscopic projection also puts a demand on the gain of the screen. There is a serious problem of light loss in the stereoscopic projection process, and the light loss degree varies from 50% to 80% due to the difference of technologies, that is, when a projector of 4000 lumens is used for stereoscopic projection, the brightness entering human eyes may only remain 800 lumens (Zscreen method). With high gain, many people naturally think of metal screens. Although the gain of the metal screen meets the requirement of the stereoscopic projection, the metal screen has serious solar effect and metal glare problems, which also seriously affect the display effect of the stereoscopic projection and cannot achieve satisfactory effect.
In the market of projection screens, although the brands are numerous and the varieties are various, the screens which can meet the requirements of stereoscopic projection are few, and professional stereoscopic projection screens are few.
Disclosure of Invention
An object of the application is to provide a photoinduced excitation three-dimensional imaging device, this photoinduced excitation three-dimensional imaging device has the advantage that realizes real bore hole stereoeffect, and the transmittance is good, and image brightness is high, does not rely on the environment.
Another object of the present application is to provide a method for manufacturing a photo-excited stereoscopic imaging device, which is simple and convenient.
The technical problem to be solved by the application is achieved by adopting the following technical scheme.
In one aspect, an embodiment of the present application provides a method for manufacturing a photo-excited stereoscopic imaging device, including the following steps:
s1, preparing a graphene film on a metal substrate, and stripping the metal substrate to obtain a single-layer graphene film;
s2, paving a layer of adhesive on the single-layer graphene film, then paving a quantum dot particle array, filling the adhesive in gaps of the quantum dot particles after the quantum dot particles are solidified, irradiating by adopting an ultraviolet lamp, finally paving the single-layer graphene film on the upper layer of the quantum dot particles, and repeatedly and circularly paving the single-layer graphene film and the quantum dot particle array to obtain the gel array containing the quantum dot particles.
In another aspect, embodiments of the present application provide a photo-excitation stereoscopic imaging device manufactured by the above manufacturing method.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
according to the method, the high-quality stereoscopic projection screen is prepared by filling the quantum dot particle array in the stereoscopic frame made of the multilayer graphene film, the screen is a transparent cube full of nanoscale transparent particles, the nanoscale transparent particles can be rapidly activated to form an image, the real naked eye stereoscopic effect is realized, the transparency is good, the image brightness is high, and the method is independent of the environment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a gel array of quantum dot particles in Experimental example 1 of the present application;
fig. 2 is a schematic structural diagram of a photo-excitation stereo imaging apparatus in experimental example 2 of the present application;
FIG. 3 is a schematic diagram of the structure of an excitation emitter in Experimental example 1 of the present application;
fig. 4 is a schematic diagram of the operation of the photo-excitation stereo imaging apparatus in experimental example 1 of the present application;
FIG. 5 is a schematic structural diagram of a reflector in embodiment 1 of the present application;
fig. 6 is a schematic diagram of quantum dots being excited and lit up in embodiment 1 of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to specific examples.
A method of manufacturing a photo-activated stereoscopic imaging device, comprising the steps of:
s1, preparing a graphene film on a metal substrate, and stripping the metal substrate to obtain a single-layer graphene film;
s2, laying a layer of adhesive on the single-layer graphene film, then laying the quantum dot particle array, filling the adhesive in gaps of the quantum dot particles after curing the quantum dot particles, irradiating by adopting an ultraviolet lamp, finally laying the single-layer graphene film on the upper layer of the quantum dot particles, and repeatedly and circularly laying the single-layer graphene film and the quantum dot particle array to obtain the gel array containing the quantum dot particles.
The quantum dots adopted in the application are quantum dot photoluminescence devices, and the quantum dots become an ideal choice for realizing displays and televisions with high saturation colors and wide color gamut due to the advantages of high luminous efficiency, high tuning precision, narrow light emission peak and the like, and have excellent application prospects.
The quantum dots have good photoluminescence efficiency, are suitable for being used as optical down-conversion materials, can effectively absorb blue light emitted by InGaN LEDs, and are suitable for being used in photoluminescence devices. By changing the composition materials and the size of the quantum dots, the excitation spectrum of the quantum dots is wide and continuous, and the wavelength is controllable.
In 2008, event Technologies, inc. issued an energy saving lamp that excited CdSe/ZnS quantum dots dispersed in a polymer cap using a blue LED. QDs downconverters can also be used to improve the white light produced by LEDs for solid state lighting due to their spectral purity, while also maintaining high luminous efficiency of the device. The invention CN201811139309.3 of China is a CdZnSeS alloy quantum dot and a preparation method thereof, and discloses a CdZnSeS alloy quantum dot and a preparation method thereof, wherein the preparation method comprises the CdZnSeS alloy quantum dot preparation method.
2017. In the years, lin Qingli et al prepared blue quantum dots by low temperature nucleation and high temperature shelling. The quantum dot not only has adjustable light-emitting color in a blue-green range (the wavelength is 450-495 nm), but also has high absolute photoluminescence quantum yield.
In some embodiments of the present application, the above manufacturing method further includes S3, installing a column laser array and a transverse laser array on the bottom surface and the side surface of the gel array, and preparing the photo-excited stereoscopic imaging device. The bottom surface and the side surface of the gel array are provided with a column laser array and a transverse laser array, the laser array emits laser with visible wave band into the gel array to excite quantum dot particles, the direction of the laser emitted by the transverse laser array is orthogonal to that of the laser emitted by the column laser array, and the intensity of the laser is adjusted by taking the excited quantum dot particles as a standard. In other embodiments of the present application, laser emission may also be performed by providing a plurality of laser emitters and mirrors outside the gel array.
In some embodiments of the present application, the material of the metal substrate is one or more of Fe, ru, co, rh, ir, ni, pd, pt, cu and Au.
In some embodiments of the present application, the above-mentioned preparing the graphene film on the metal substrate adopts a chemical vapor deposition method, and the specific steps are as follows: putting the metal substrate into a furnace, introducing protective gas, heating to 950-1050 ℃, keeping for 10-30min, stopping introducing the protective gas, changing into introducing a gas carbon source, continuously reacting for 20-40min, stopping heating, stopping introducing the gas carbon source, continuing introducing the protective gas, and cooling to room temperature. In addition, the application can also adopt a silicification thermal decomposition method and a decomposition method to prepare the graphene film on the metal substrate.
In some embodiments of the present application, the protective gas is hydrogen, argon or nitrogen; the gas carbon source is methane, acetylene or ethylene.
In some embodiments of the present application, the graphene thin film has a thickness of 0.33 to 0.34nm.
In some embodiments of the present application, the adhesive is a UV glue or a shadowless glue; the quantum dot particles are quantum dot photoluminescent devices.
In some embodiments of the present application, the step of curing the quantum dot particles is irradiation with ultraviolet light for 20 to 30 seconds.
In some embodiments of the present application, the above-mentioned uv irradiation time is 20-30s, which is effective to enhance the overall intensity and the overall transparency.
A photoinduced excitation three-dimensional imaging device is manufactured by adopting the manufacturing method.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
A method of manufacturing a photo-activated stereoscopic imaging device, comprising the steps of:
1. preparation of graphene thin film by Chemical Vapor Deposition (CVD)
The method comprises the steps of putting a metal substrate made of Fe into a furnace, introducing nitrogen as protective gas, heating to 1000 ℃, maintaining the temperature stable, keeping the temperature for 20min, stopping introducing the protective gas, changing to introducing methane as a gas carbon source, continuously reacting for 30min, cutting off a power supply after the reaction is completed, stopping heating, closing the gas carbon source, introducing the protective gas to exhaust the gas carbon source, cooling the furnace to room temperature in the environment of the protective gas, removing a metal foil, and stripping the single-layer graphene film from the metal substrate by using a mechanical stripping technology to obtain the complete single-layer graphene film, wherein the thickness of the single-layer graphene film is 0.335nm.
2. Preparation of gel arrays comprising Quantum dot particles
A layer of adhesive (UV adhesive) is laid on the single-layer graphene film, and then the quantum dot particle array is uniformly and orderly laid, wherein the quantity of the quantum dot particle array can be adjusted; irradiating the quantum dot particle array for 25s by using an ultraviolet lamp to solidify the quantum dot particle array; filling adhesive in the gaps of the quantum dot particles, and irradiating for 30s by using an ultraviolet lamp to enhance the integral strength and the integral permeability, so as to prepare single-layer gel containing the quantum dot particles; according to the method, continuously paving a single-layer graphene film on the single-layer gel containing the quantum dot particles, and then paving an adhesive and a quantum dot particle array; and (3) repeatedly and circularly paving the single-layer graphene and the quantum dot particle array to prepare the complete gel array of the quantum dot particles.
The laser source in this embodiment is a plurality of laser generators and reflectors disposed outside the gel array, as shown in fig. 1, the frame is made of a graphene transparent material, photoluminescence quantum dots are arranged in the frame, the plurality of laser generators are substantially disposed adjacently at the same position by using a plurality of lasers, but there is a certain angle between the lasers, the plurality of lasers emit laser, the quantum dot particles at the intersection point after the laser is reflected by the reflectors, the quantum dot particles at different positions in the quantum dot particle gel array are excited to be photoluminescence by controlling the angles of the reflectors, and the reflectors can be adjusted in angle rapidly to achieve the three-dimensional imaging effect.
In the present embodiment, a schematic diagram (front, side, top and perspective views) of the laser generator is shown in fig. 3; the laser emitter emits laser light (or blue light) with a specific wave band to irradiate the quantum dots through the reflecting mirror so as to excite the quantum dot particles. The reflector is provided with magnetic poles, the rotation angle of the reflector is controlled by controlling the surrounding magnetic field to realize the scanning of the appointed quantum dots, so that the specific quantum dots emit light and finally form a specific pattern, the working schematic diagram (front view, side view, top view and three-dimensional view) of the reflector is shown in fig. 4, and the design (front view, side view, top view and three-dimensional view) of the reflector is shown in fig. 5. The arrangement of the quantum dots is staggered, and only one quantum dot can be irradiated by one laser beam, so that only one quantum dot is excited to light when the laser scans, as shown in fig. 6.
Example 2
A method of manufacturing a photo-activated stereoscopic imaging device, comprising the steps of:
1. preparation of graphene thin film by Chemical Vapor Deposition (CVD)
The method comprises the steps of putting Co as a material of a metal substrate, putting the metal substrate into a furnace, introducing argon as a protective gas, heating to 950 ℃, maintaining the temperature stable, keeping the temperature for 15min, stopping introducing the protective gas, changing into introducing vinyl alkane as a gas carbon source, continuously reacting for 40min, cutting off a power supply after the reaction is completed, stopping heating, closing the gas carbon source, introducing the protective gas to exhaust the gas carbon source, cooling the furnace to room temperature in an environment of the protective gas, removing a metal foil, and stripping the single-layer graphene film from the metal substrate by utilizing a mechanical stripping technology to obtain the complete single-layer graphene film, wherein the thickness of the single-layer graphene film is 0.335nm.
2. Preparation of gel arrays comprising Quantum dot particles
A layer of adhesive (shadowless glue) is laid on the single-layer graphene film, then the quantum dot particle array is uniformly and orderly laid, and the quantity of the quantum dot particle array can be adjusted; irradiating the quantum dot particle array for 20s by using an ultraviolet lamp to solidify the quantum dot particle array; filling adhesive in the gaps of the quantum dot particles, and irradiating for 30s by using an ultraviolet lamp to enhance the integral strength and the integral permeability, so as to prepare single-layer gel containing the quantum dot particles; according to the method, continuously paving a single-layer graphene film on the single-layer gel containing the quantum dot particles, and then paving an adhesive and a quantum dot particle array; and (3) repeatedly and circularly paving the single-layer graphene and the quantum dot particle array to prepare the complete gel array of the quantum dot particles.
3. And respectively installing a column laser array and a transverse laser array on the bottom surface and the side surface of the gel array to prepare the photoinduced excitation three-dimensional imaging device, as shown in figure 2.
In this embodiment, the laser array emits laser in a visible wavelength band to the gel matrix to excite the quantum dot particles in the gel matrix, and the direction of the laser emitted by the transverse laser array is orthogonal to the direction of the laser emitted by the column-wise laser array, and the intensity of the laser is adjusted based on the excitation of the quantum dot particles, so as to finally manufacture the photo-excitation three-dimensional imaging device.
Example 3
A method of manufacturing a photo-activated stereoscopic imaging device, comprising the steps of:
1. preparation of graphene thin film by Chemical Vapor Deposition (CVD)
The method comprises the steps of adopting an alloy of Pd and Cu as a material of a metal substrate, putting the metal substrate into a furnace, introducing argon as a protective gas, heating to 1050 ℃, keeping the temperature stable for 30min, stopping introducing the protective gas, introducing acetylene as a gas carbon source instead, continuously reacting for 20min, cutting off a power supply after the reaction is completed, stopping heating, closing the gas carbon source, introducing the protective gas to exhaust the gas carbon source, cooling the furnace to room temperature in an environment of the protective gas, removing a metal foil, and stripping the single-layer graphene film from the metal substrate by using a mechanical stripping technology to obtain the complete single-layer graphene film, wherein the thickness of the single-layer graphene film is 0.34nm.
2. Preparation of gel arrays comprising Quantum dot particles
A layer of adhesive (UV adhesive) is laid on the single-layer graphene film, and then the quantum dot particle array is uniformly and orderly laid, wherein the quantity of the quantum dot particle array can be adjusted; irradiating the quantum dot particle array for 30s by using an ultraviolet lamp to solidify the quantum dot particle array; filling an adhesive in gaps of the quantum dot particles, and irradiating for 25s by using an ultraviolet lamp to enhance the overall strength and the overall permeability so as to prepare single-layer gel containing the quantum dot particles; according to the method, continuously paving a single-layer graphene film on the single-layer gel containing the quantum dot particles, and then paving an adhesive and a quantum dot particle array; and (3) repeatedly and circularly paving the single-layer graphene and the quantum dot particle array to prepare the complete gel array of the quantum dot particles.
3. And a column laser array and a transverse laser array are respectively arranged on the bottom surface and the side surface of the gel array.
Example 4
A method of manufacturing a photo-activated stereoscopic imaging device, comprising the steps of:
1. preparation of graphene thin film by Chemical Vapor Deposition (CVD)
The method comprises the steps of adopting an alloy of Pd and Cu as a material of a metal substrate, putting the metal substrate into a furnace, introducing argon as a protective gas, heating to 1050 ℃, keeping the temperature stable for 30min, stopping introducing the protective gas, introducing acetylene as a gas carbon source instead, continuously reacting for 20min, cutting off a power supply after the reaction is completed, stopping heating, closing the gas carbon source, introducing the protective gas to exhaust the gas carbon source, cooling the furnace to room temperature in an environment of the protective gas, removing a metal foil, and stripping the single-layer graphene film from the metal substrate by using a mechanical stripping technology to obtain the complete single-layer graphene film, wherein the thickness of the single-layer graphene film is 0.34nm.
2. Preparation of gel arrays comprising Quantum dot particles
A layer of adhesive (UV adhesive) is laid on the single-layer graphene film, and then the quantum dot particle array is uniformly and orderly laid, wherein the quantity of the quantum dot particle array can be adjusted; irradiating the quantum dot particle array for 28s by using an ultraviolet lamp to solidify the quantum dot particle array; filling adhesive in the gaps of the quantum dot particles, and irradiating for 30s by using an ultraviolet lamp to enhance the integral strength and the integral permeability, so as to prepare single-layer gel containing the quantum dot particles; according to the method, continuously paving a single-layer graphene film on the single-layer gel containing the quantum dot particles, and then paving an adhesive and a quantum dot particle array; and laying a single-layer graphene and quantum dot particle array in such a repeated cycle manner to prepare a complete gel array of quantum dot particles.
3. And a column laser array and a transverse laser array are respectively arranged on the bottom surface and the side surface of the gel array.
In summary, the photo-excitation three-dimensional imaging device and the manufacturing method thereof according to the embodiments of the present application have the following advantages: according to the method, the high-quality stereoscopic projection screen is prepared by filling the quantum dot particle array in the stereoscopic frame made of the multilayer graphene film, the screen is a transparent cube full of nanoscale transparent particles, the nanoscale transparent particles can be rapidly activated to form an image, the real naked eye stereoscopic effect is realized, the transparency is good, the image brightness is high, and the method is independent of the environment.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
Claims (10)
1. A method of making a photo-activated stereoscopic imaging device, comprising the steps of:
s1, preparing a graphene film on a metal substrate, and stripping the metal substrate to obtain a single-layer graphene film;
s2, laying a layer of adhesive on the single-layer graphene film, then laying the quantum dot particle array, filling the adhesive in gaps of the quantum dot particles after curing the quantum dot particles, irradiating by adopting an ultraviolet lamp, finally laying the single-layer graphene film on the upper layer of the quantum dot particles, and repeatedly and circularly laying the single-layer graphene film and the quantum dot particle array to obtain the gel array containing the quantum dot particles.
2. The method of claim 1, further comprising step S3 of mounting a column laser array and a transverse laser array on the bottom and side of the gel array.
3. The method as claimed in claim 1, wherein the metal substrate is made of one or more of Fe, ru, co, rh, ir, ni, pd, pt, cu and Au.
4. The method for manufacturing the photo-excited three-dimensional imaging device according to claim 3, wherein the graphene film is prepared on the metal substrate by a chemical vapor deposition method, and the method comprises the following specific steps: putting the metal substrate into a furnace, introducing protective gas, heating to 950-1050 ℃, keeping for 10-30min, stopping introducing the protective gas, changing into introducing a gas carbon source, continuously reacting for 20-40min, stopping heating, stopping introducing the gas carbon source, continuing introducing the protective gas, and cooling to room temperature.
5. The method of claim 4, wherein the protective gas is hydrogen, argon, or nitrogen; the gas carbon source is methane, acetylene or ethylene.
6. The method as claimed in claim 4, wherein the graphene film has a thickness of 0.33-0.34nm.
7. The method of claim 1, wherein the adhesive is UV glue or shadowless glue; the quantum dot particles are quantum dot photoluminescent devices.
8. The method as claimed in claim 1, wherein the step of curing the quantum dot particles is performed by irradiating with ultraviolet light for 20-30s.
9. The method of claim 1, wherein the UV irradiation time is 20-30s.
10. A photo-excited stereoscopic imaging device manufactured by the manufacturing method according to any one of claims 1 to 9.
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