Polarizer preparation device and method

Abstract

The present invention discloses a polarizer preparation device and method, relating to the field of polarizer production technology. The device comprises an evaporation component and a support component. The evaporation component comprises an outer shell, a heating wire, and a movable plate. A first accommodating chamber and a second accommodating chamber are provided inside the outer shell. The first accommodating chamber communicates with the outside world through a first opening, and the second accommodating chamber communicates with the first opening through a second opening. A slot is provided at the first opening corresponding to the second opening, and the movable plate is slidably connected to the inner wall of the first opening. Two quantum dot layers of different sizes are formed on a substrate. Compared with a quantum dot layer formed by coating, the two quantum dot layers of different sizes can be clearly distinguished, and the quantum dots in each layer are more uniform. Moreover, the evaporation is performed in a vacuum environment, which can effectively prevent fine dust particles from contaminating the quantum dot layer, thereby effectively improving the quality of the quantum dot layer.

Description

Technical Field

[0001] The present invention relates to the technical field of polarizer production, and in particular to a polarizer preparation device and method. Background Art

[0002] Polarizer stands for polarizing film. Liquid crystal displays rely on polarized light for imaging. All liquid crystal displays have two polarizers, front and back, attached tightly to the liquid crystal glass, forming a liquid crystal film with a total thickness of approximately 1mm. If either polarizer is missing, the liquid crystal film will not display an image. The basic structure of a polarizer includes: a central layer of PVA (polyvinyl alcohol), two layers of TAC (triacetyl cellulose), a PSA film (pressure-sensitive adhesive), a release film, and a protective film. The PVA layer is responsible for polarization. For STN LCD polarizers, a phase difference film and a protective film with a certain compensation value for phase difference must be added to the PSA layer at a specific compensation angle, depending on the customer's needs.

[0003] To meet the demand for wide color gamut and high color saturation in displays, integrating photoluminescent quantum dot devices into backlight structures has become an effective option for major display manufacturers. As nanoscale materials, quantum dots, due to their narrow size (<10 nanometers), exhibit a pronounced quantum confinement effect. When excited by light, when the excitation energy level exceeds the band gap, electrons jump from the valence band to the conduction band and are converted into light energy, resulting in different colors. The color of light is determined by the quantum dot's composition and size. Generally, smaller quantum dot particles absorb longer wavelengths, while larger quantum dot particles absorb shorter wavelengths. For example, quantum dots can absorb short-wavelength blue light and emit long-wavelength red and green light. This property enables quantum dots to change the color of the light emitted by the light source. By using the blue light from the backlight LED (light emitting diode) to excite the quantum dots, the display's color gamut can be effectively improved.

[0004] Currently, when preparing a quantum dot layer, the quantum dot material is generally first dissolved and dispersed in the dissolving medium, mixed evenly, to obtain quantum dot glue, and the quantum dot glue is made into a film on the substrate by coating. After drying and curing, the quantum dot layer is obtained. However, since the quantum dot layer needs to excite two colors of light, red and green, in order to match the blue emitted by the backlight LED to mix into various colors, but the two quantum dots that excite red and green light are different in size, the existing method of preparing the quantum dot layer by coating quantum dot glue is that the distribution of the two quantum dots is often determined by the uniformity of the solution. Precipitation of the solution during the coating process will cause the quantum dots to be less uniform, and fine dust particles will fall on the quantum dots during the coating process, affecting the quality of the quantum dot layer. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in the existing method of preparing a quantum dot layer by coating quantum dot glue, the distribution of the two quantum dots is often determined by the uniformity of the solution. Precipitation of the solution during the coating process will cause the quantum dots to be uneven, and fine dust particles will fall on the quantum dots during the coating process, affecting the quality of the quantum dot layer.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a polarizer preparation device, comprising an evaporation component and a support component, the evaporation component comprising an outer shell, a heating wire and a movable plate, a first accommodating chamber and a second accommodating chamber are provided inside the outer shell, and the first accommodating chamber is communicated with the outside through a first opening, the second accommodating chamber is communicated with the first opening through a second opening, and a card slot is provided at a position of the first opening corresponding to the second opening, the movable plate is slidably connected to the inner wall of the first opening, and the outer shell is provided with a heating wire; the support component comprises a support plate, a rotating shaft, a slide groove, a slider and a sleeve, the slider is fixedly connected to both sides of the outer shell, the slider is slidably connected to the inner wall of the slide groove, the bottom of the slide groove is fixedly connected to the upper surface of the support plate, the lower surface of the support plate is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the sleeve.

[0007] As a preferred solution of the polarizer preparation device described in the present invention, wherein: the support assembly also includes a first driving member, the first driving member includes a first telescopic rod, a first spring and a fixed plate, the fixed plate is fixedly connected to the movable plate, the fixed plate is fixedly connected to one end of the first telescopic rod, the other end of the first telescopic rod is fixedly connected to the inner wall of the second accommodating cavity, and a first spring is arranged between the fixed plate and the inner wall of the second accommodating cavity.

[0008] As a preferred solution of the polarizer preparation device described in the present invention, wherein: the support assembly also includes a second driving member, the second driving member includes a second telescopic rod, a second spring and a fixed block, the fixed block is fixedly connected to the upper surface of the support plate, the fixed block is fixedly connected to one end of the second telescopic rod, the other two ends of the second telescopic rod are fixedly connected to the outer wall of the shell, and the second telescopic rod is provided with a second spring.

[0009] As a preferred solution of the polarizer preparation device described in the present invention, the support assembly also includes a third driving member, which includes a mounting plate, a third telescopic rod, a third spring, a tooth plate and a gear. The bottom of the mounting plate is fixedly connected to the base, the upper surface of the base is fixedly connected to the sleeve, the mounting plate is fixedly connected to one end of the third telescopic rod, and the other end of the third telescopic rod is fixedly connected to the tooth plate, the tooth plate is meshed with the gear, and the gear is fixedly connected to the rotating shaft.

[0010] As a preferred embodiment of the polarizer preparation device of the present invention, it further includes a drive assembly, which includes a cylinder, a first connecting pipe, a main pipe, a branch pipe, a second connecting pipe and a third connecting pipe. An air inlet pipe is provided at one end of the cylinder, and an exhaust pipe is provided at the other end of the cylinder. The cylinder is fixedly connected to one end of the first connecting pipe, and the other end of the first connecting pipe is fixedly connected to the main pipe. The main pipe is fixedly connected to one end of the branch pipe, and the other end of the branch pipe is fixedly connected to the first telescopic rod, and the outer wall of the main pipe is fixedly connected to the outer wall of the outer shell, the cylinder is fixedly connected to one end of the second connecting pipe, and the other end of the second connecting pipe is fixedly connected to the second telescopic rod, the cylinder is fixedly connected to one end of the third connecting pipe, and the other end of the third connecting pipe is fixedly connected to the third telescopic rod.

[0011] As a preferred solution of the polarizer preparation device of the present invention, the inner wall of the cylinder is slidably connected to the piston head, the piston head is fixedly connected to one end of the fourth spring, and the other end of the fourth spring is fixedly connected to the inner end wall of the cylinder.

[0012] As a preferred embodiment of the method for preparing the polarizer of the present invention, the following steps are performed: fixing the substrate; setting a vacuum environment; placing the quantum dot layer material into a first receiving cavity, and heating the first receiving cavity through an electric heating wire so that the quantum dot layer material forms gas molecular clusters; the gas molecular clusters rise to the lower surface of the substrate through the first opening, and at the same time drive the outer shell to translate relative to the substrate; the gas molecular clusters condense into a quantum dot layer on the lower surface of the substrate.

[0013] As a preferred solution of the polarizer preparation method of the present invention, fixing the substrate includes: attaching the upper surface of the substrate to the base plate and fixing the base plate above the outer shell; cooling the base plate to reduce the temperature of the lower surface of the substrate.

[0014] As a preferred solution of the method for preparing the polarizer of the present invention, setting a vacuum environment includes setting the substrate, the evaporation component, the support component and the drive component in a vacuum environment.

[0015] As a preferred embodiment of the method for preparing a polarizer according to the present invention, the quantum dot layer material is placed in a first accommodating cavity, and the first accommodating cavity is heated to a first temperature by an electric heating wire, so that the quantum dot layer material forms a first gas molecule group; the first gas molecule group rises to the lower surface of the substrate through the first opening, and at the same time drives the outer shell to translate relative to the substrate; the first gas molecule group condenses into a first quantum dot layer on the lower surface of the substrate; the outer shell is driven to rotate 90°; the first accommodating cavity is heated to a second temperature by an electric heating wire, so that the quantum dot layer material forms a second gas molecule group; the second gas molecule group rises to the lower surface of the substrate through the first opening, and at the same time drives the outer shell to translate relative to the substrate; the second gas molecule group condenses into a second quantum dot layer on the lower surface of the substrate.

[0016] The beneficial effects of the present invention are as follows: the present invention can increase the heating temperature by controlling the electric heating wire, thereby accelerating the speed at which the gas molecules formed by the quantum dot layer material move toward the substrate, and reducing the volume of the gas molecular clusters condensed in the air by the gas molecules, so as to control the size of the quantum dots. By driving the rotating shaft to rotate 90° and driving the evaporation component to rotate 90°, the substrate can be evaporated from another angle to form two quantum dot layers with quantum dots of different sizes on the substrate. Compared with the quantum dot layer formed by coating, the two quantum dot layers of different sizes can be clearly distinguished, and the quantum dots in each layer are more uniform. Moreover, by evaporating in a vacuum environment, it is possible to effectively prevent fine dust particles from contaminating the quantum dot layer, thereby effectively improving the quality of the quantum dot layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the embodiment of the present disclosure.

[0018] Figure 2 2 is a cross-sectional view of the outer shell in an embodiment of the present disclosure.

[0019] Figure 3 Schematic diagram of the cross section of the outer shell in the embodiment of the present disclosure.

[0020] Figure 4 This is a schematic diagram of the outer shell assembly in an embodiment of the present disclosure.

[0021] Figure 5 In the embodiment of the present disclosure Figure 3 Enlarged schematic diagram of point A in the middle.

[0022] Figure 6 This is a bottom view of the support plate in the embodiment of the present disclosure.

[0023] Figure 7 2 is a cross-sectional view of the cylinder in an embodiment of the present disclosure.

[0024] Figure 8The present invention is a flow chart of a method for preparing a polarizer in an embodiment of the present invention.

[0025] Reference numerals: evaporation component 100, outer shell 101, first accommodating chamber 101a, second accommodating chamber 101b, first opening 101c, second opening 101d, slot 101e, heating wire 102, movable plate 103, support component 200, support plate 201, rotating shaft 202, slide groove 203, slider 204, sleeve 205, first driving member 206, first telescopic rod 206a, first spring 206b, fixed plate 206c, second driving member 207 , second telescopic rod 207a, second spring 207b, fixed block 207c, third driving member 208, mounting plate 208a, third telescopic rod 208b, third spring 208c, gear plate 208d, gear 208e, base 209 drive assembly 300, cylinder 301, piston head 301c, piston head 301c, fourth spring 301d, first connecting pipe 302, main pipe 303, branch pipe 304, second connecting pipe 305, third connecting pipe 306. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Reference Figures 1 to 3 , this embodiment provides a polarizer preparation device, comprising,

[0029] The evaporation component 100 includes an outer shell 101, a heating wire 102 and a movable plate 103. A first accommodating chamber 101a and a second accommodating chamber 101b are provided inside the outer shell 101, and the first accommodating chamber 101a is connected to the outside through a first opening 101c, and the second accommodating chamber 101b is connected to the first opening 101c through a second opening 101d, and a card slot 101e is provided at the position of the first opening 101c corresponding to the second opening 101d. The movable plate 103 is slidably connected to the inner wall of the first opening 101c, and the heating wire 102 is provided inside the outer shell 101.

[0030] Preferably, in this embodiment, the quantum dot layer material inside the first accommodating cavity 101a can be heated by energizing the heating wire 102. Gas molecules are formed after heating, which condense into gas molecule images in the air to form quantum dots of 1-10 nanometers in size. The quantum dot layer material moves upward through the first opening 101c; the movable plate 103 can slide on the inner wall of the first opening 101c, and when one side of the movable plate 103 is inserted into the slot 101e, the first opening 101c can be closed.

[0031] The support assembly 200 includes a support plate 201, a rotating shaft 202, a slide groove 203, a slider 204 and a sleeve 205. The sliders 204 are fixedly connected on both sides of the outer shell 101. The sliders 204 are slidably connected to the inner walls of the slide groove 203. The bottom of the slide groove 203 is fixedly connected to the upper surface of the support plate 201. The lower surface of the support plate 201 is fixedly connected to one end of the rotating shaft 202. The other end of the rotating shaft 202 is rotatably connected to the sleeve 205.

[0032] In this embodiment, the support plate 201 preferably secures the position of the chute 203, and the outer shell 101 drives the sliders 204 on both sides to slide along the inner wall of the chute 203, thereby improving the stability of the outer shell 101 during translation. The rotating shaft 202 rotates along the inner wall of the sleeve 205, which helps improve the stability of the rotating shaft 202 during rotation. When the rotating shaft 202 rotates, it drives the support plate 201, the chute 203, the sliders 204, and the evaporation assembly 100 to rotate.

[0033] When in use, the substrate is fixed above the outer shell 101. The substrate can be pasted on the lower surface of the substrate and fixed to the upper surface of the substrate by a bracket or a support rod. Then the entire device and the substrate are placed in a vacuum environment.

[0034] By energizing the heating wire 102, the quantum dot layer material inside the first accommodating cavity 101a can be heated. The quantum dot layer material forms gas molecules. The temperature of the gas molecules drops sharply in the air, and they will condense into gas molecular clusters with adjacent gas molecules to form quantum dots with a size of 1-10 nanometers. The gas molecular clusters move upward through the first opening 101c. When the quantum dot layer material in the gas molecular cluster state hits the lower surface of the substrate, it will condense on the lower surface of the substrate to form a quantum dot layer. The quantum dot layer is prepared using the principle of vacuum evaporation, and the quantum dots are more uniform. By controlling the heating wire 102 to increase the heating temperature, the speed at which the gas molecules formed by the quantum dot layer material move toward the substrate can be accelerated, and the volume of the gas molecules condensed into gas molecular clusters in the air can be reduced, so that the size of the quantum dots can be controlled. By driving the rotating shaft 202 to rotate 90° and driving the evaporation component 100 to rotate 90°, the substrate can be evaporated from another angle to form two layers of quantum dot layers with quantum dots of different sizes on the substrate. Compared with the quantum dot layer formed by coating, the two layers of quantum dot layers with different sizes can be clearly distinguished, and the quantum dots in each layer are more uniform. Moreover, vapor deposition in a vacuum environment can effectively prevent fine dust particles from contaminating the quantum dot layer, thereby effectively improving the quality of the quantum dot layer.

[0035] Example 2

[0036] Reference Figures 1 to 7 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that.

[0037] Reference Figure 2 and Figure 3 The support assembly 200 also includes a first driving member 206, which includes a first telescopic rod 206a, a first spring 206b and a fixed plate 206c. The fixed plate 206c is fixedly connected to the movable plate 103, and the fixed plate 206c is fixedly connected to one end of the first telescopic rod 206a. The other end of the first telescopic rod 206a is fixedly connected to the inner wall of the second accommodating cavity 101b, and a first spring 206b is arranged between the fixed plate 206c and the inner wall of the second accommodating cavity 101b.

[0038] In this embodiment, preferably, when the first telescopic rod 206a is extended, it can overcome the tension of the first spring 206b, driving the fixed plate 206c to move. The two ends of the fixed plate 206c are slidably connected to the inner wall of the second accommodating cavity 101b. The fixed plate 206c drives the movable plate 103 to slide and open the first opening 101c. The first telescopic rod 206a and the first spring 206b can be provided in two or more sets on the fixed plate 206c and the inner wall of the second accommodating cavity 101b to enhance the stability of the movable plate 103 when sliding. Figure 3 The outer shell 101 is cut open at the middle section, and the first telescopic rod 206a, the first spring 206b, the fixed plate 206c and the movable plate 103 are first installed into the second accommodating cavity 101b, and then the cross-sectional parts of the outer shell 101 are fixedly connected together.

[0039] Reference Figure 1 The support assembly 200 also includes a second driving member 207, which includes a second telescopic rod 207a, a second spring 207b and a fixed block 207c. The fixed block 207c is fixedly connected to the upper surface of the support plate 201, the fixed block 207c is fixedly connected to one end of the second telescopic rod 207a, and the other two ends of the second telescopic rod 207a are fixedly connected to the outer wall of the outer shell 101, and a second spring 207b is sleeved on the second telescopic rod 207a.

[0040] In this embodiment, the ends of the second spring 207b are preferably fixedly connected to the fixed block 207c and the outer wall of the outer shell 101, respectively. When the second telescopic rod 207a is extended, it can overcome the tension of the second spring 207b, pushing the outer shell 101 to move. The outer shell 101 can drive the sliders 204 on both sides to slide along the inner wall of the slide groove 203, thereby improving the stability of the outer shell 101 during translation. As the outer shell 101 moves, it drives the quantum dot layer material in the form of gas molecular clusters escaping from the first opening 101c to move along the lower surface of the substrate, uniformly condensing across the entire lower surface of the substrate to form a quantum dot layer.

[0041] Reference Figure 1The support assembly 200 also includes a third driving member 208, which includes a mounting plate 208a, a third telescopic rod 208b, a third spring 208c, a tooth plate 208d and a gear 208e. The bottom of the mounting plate 208a is fixedly connected to the base 209, and the upper surface of the base 209 is fixedly connected to the sleeve 205. The mounting plate 208a is fixedly connected to one end of the third telescopic rod 208b, and the other end of the third telescopic rod 208b is fixedly connected to the tooth plate 208d. The tooth plate 208d is meshed with the gear 208e, and the gear 208e is fixedly connected to the rotating shaft 202.

[0042] In this embodiment, the base 209 preferably secures the sleeve 205, and the mounting plate 208a secures the third telescopic rod 208b. When the third telescopic rod 208b extends, it overcomes the tension of the third spring 208c, pushing the toothed plate 208d to move. The toothed plate 208d then drives the gear 208e. When the third telescopic rod 208b reaches its maximum extension, the gear 208e rotates 90° in the forward direction. When the third telescopic rod 208b is fully retracted, the gear 208e rotates 90° in the reverse direction, returning to its original position.

[0043] Reference Figure 1 , also includes a driving assembly 300, the driving assembly 300 includes a cylinder 301, a first connecting pipe 302, a main pipe 303, a branch pipe 304, a second connecting pipe 305 and a third connecting pipe 306, one end of the cylinder 301 is provided with an air intake pipe 301a, and the other end of the cylinder 301 is provided with an exhaust pipe 301b, the cylinder 301 is fixedly connected to one end of the first connecting pipe 302, the other end of the first connecting pipe 302 is fixedly connected to the main pipe 303, the main pipe 303 is fixedly connected to one end of the branch pipe 304, the other end of the branch pipe 304 is fixedly connected to the first telescopic rod 206a, and the outer wall of the main pipe 303 is fixedly connected to the outer wall of the outer shell 101, the cylinder 301 is fixedly connected to one end of the second connecting pipe 305, the other end of the second connecting pipe 305 is fixedly connected to the second telescopic rod 207a, the cylinder 301 is fixedly connected to one end of the third connecting pipe 306, and the other end of the third connecting pipe 306 is fixedly connected to the third telescopic rod 208b.

[0044] In this embodiment, an existing air pump is preferably connected to the intake pipe 301a to pump air into the cylinder 301. The air inside the cylinder 301 can enter the main pipe 303 through the first connecting pipe 302. The air inside the main pipe 303 enters the branch pipe 304 and then enters the first telescopic rod 206a. The first telescopic rod 206a overcomes the tension of the first spring 206b, driving the fixed plate 206c to move. The two ends of the fixed plate 206c slide and connect to the inner wall of the second accommodating chamber 101b. The fixed plate 206c drives the movable plate 103 to slide, opening the first opening 101c. The air inside the cylinder 301 can be discharged through the exhaust pipe 301b.

[0045] Air inside cylinder 301 enters second telescopic rod 207a through second connecting pipe 305. Second telescopic rod 207a extends, overcoming the tension of second spring 207b and pushing outer shell 101 to move horizontally. Air inside cylinder 301 enters third telescopic rod 208b through third connecting pipe 306. Third telescopic rod 208b extends, overcoming the tension of third spring 208c and pushing toothed plate 208d to move. Toothed plate 208d drives gear 208e. When third telescopic rod 208b reaches its maximum extension, gear 208e rotates 90° in the forward direction.

[0046] Reference Figure 7 The inner wall of the cylinder 301 is slidably connected to the piston head 301c, the piston head 301c is fixedly connected to one end of the fourth spring 301d, and the other end of the fourth spring 301d is fixedly connected to the inner end wall of the cylinder 301.

[0047] In this embodiment, preferably, the existing air pump is connected to the air inlet pipe 301a to pump air into the cylinder 301. The air will first enter the main pipe 303 through the first connecting pipe 302. The air inside the main pipe 303 enters the branch pipe 304 and then enters the first telescopic rod 206a. The first telescopic rod 206a overcomes the tension of the first spring 206b and drives the fixed plate 206c to move. The two ends of the fixed plate 206c are slidably connected to the inner wall of the second accommodating chamber 101b. The fixed plate 206c drives the movable plate 103 to slide, opening the first opening 101c. At this time, the first telescopic rod 206a Since the second accommodating chamber 101b is restricted and cannot continue to extend, air is pumped into the cylinder 301, and the air pressure inside the cylinder 301 increases, which will push the piston head 301c to compress the fourth spring 301d until the second connecting tube 305 is exposed. At this time, gas can enter the second connecting tube 305. When the second telescopic rod 207a is extended to the maximum stroke, it no longer extends. Air is pumped into the cylinder 301, and the air pressure inside the cylinder 301 increases, which will push the piston head 301c to compress the fourth spring 301d until the third connecting tube 306 is exposed, and air can enter the third telescopic rod 208b.

[0048] When in use, the substrate is fixed above the outer shell 101. The substrate can be pasted on the lower surface of the substrate and fixed to the upper surface of the substrate by a bracket or a support rod. Then the entire device and the substrate are placed in a vacuum environment.

[0049] By energizing the heating wire 102, the quantum dot layer material inside the first accommodation chamber 101a can be heated, and the quantum dot layer material forms gas molecules. The air inlet pipe 301a is connected to the cylinder 301 to pump air. The air will first enter the main pipe 303 through the first connecting pipe 302. The air inside the main pipe 303 enters the branch pipe 304 and then enters the first telescopic rod 206a. The first telescopic rod 206a overcomes the tension of the first spring 206b and drives the fixed plate 206c to move. The two ends of the fixed plate 206c are slidably connected. On the inner wall of the second accommodating cavity 101b, the fixed plate 206c drives the movable plate 103 to slide, opening the first opening 101c. After the gas molecules pass through the first opening 101c and leave the outer shell 101, the temperature of the gas molecules drops sharply in the air, and they will condense into gas molecular clusters with adjacent gas molecules to form quantum dots with a size of 1-10 nanometers. The gas molecular clusters pass through the first opening 101c and move upward. When the quantum dot layer material in the gas molecular cluster state touches the lower surface of the substrate, it will condense on the lower surface of the substrate to form a quantum dot layer.

[0050] At this time, air continues to be pumped into the cylinder 301, and the air pressure inside the cylinder 301 increases, which will push the piston head 301c to compress the fourth spring 301d until the second connecting tube 305 is exposed. At this time, the gas can enter the second connecting tube 305. When the second telescopic rod 207a extends, it overcomes the pulling force of the second spring 207b and pushes the outer shell 101 to move horizontally. The gas molecular group completes the first evaporation on the lower surface of the substrate, so that the first layer of quantum dots is formed on the lower surface of the substrate.

[0051] At this time, air continues to be pumped into the cylinder 301, and the air pressure inside the cylinder 301 increases, which will push the piston head 301c to compress the fourth spring 301d until the third connecting tube 306 is exposed, and air can enter the third telescopic rod 208b. The third telescopic rod 208b extends, overcomes the tension of the third spring 208c, and pushes the gear plate 208d to move. The gear plate 208d drives the gear 208e. When the third telescopic rod 208b is extended to the maximum stroke, the gear 208e rotates 90° in the forward direction, drives the rotating shaft 202 to rotate 90°, and drives the evaporation component 100 to rotate 90°, so that the substrate can be evaporated from another angle. By controlling the heating wire 102 to increase the heating temperature, the speed at which the gas molecules forming the quantum dot layer material move toward the substrate can be accelerated, and the volume of the gas molecules condensed into gas molecular clusters in the air can be reduced, so that the size of the quantum dots can be controlled, and two layers of quantum dot layers with quantum dots of different sizes can be formed on the substrate.

[0052] At the same time, the exhaust pipe 301b is opened, and the air inside the cylinder 301 is discharged through the exhaust pipe 301b, and the other end of the exhaust pipe 301b is set outside the vacuum environment to prevent air from entering the vacuum environment; and the pulling force of the second spring 207b is greater than the pulling force of the third spring 208c, which is greater than the total pulling force of all the first springs 206b. In this way, in the process of discharging the air inside the cylinder 301, the second spring 207b first pulls the outer shell 101 to move horizontally for reset, and the gas molecular group completes the second evaporation on the lower surface of the substrate to form a second quantum dot layer. At this time, the quantum dot layer is completed.

[0053] As the exhaust pipe 301b continues to discharge air from the interior of the cylinder 301, as the air pressure decreases below the tension of the third spring 208c, the third spring 208c, under the action of the tension, pulls the toothed plate 208d to reset, the third telescopic rod 208b fully retracts, and the gear 208e rotates 90° in the opposite direction, resetting the gear 208e and the support plate 201. As the exhaust pipe 301b continues to discharge air from the interior of the cylinder 301, as the air pressure decreases below the combined tension of all the first springs 206b, the first springs 206b, under the action of the tension, pull the fixed plate 206c, causing the movable plate 103 to slide. The movable plate 103 is inserted into the slot 101e, sealing the first opening 101c. Compared to a quantum dot layer formed by coating, two layers of quantum dot layers of different sizes can be clearly distinguished, and the quantum dots in each layer are more uniform. Furthermore, vapor deposition in a vacuum environment effectively prevents contamination of the quantum dot layer by fine dust particles, effectively improving the quality of the quantum dot layer.

[0054] Example 3

[0055] Reference Figure 2 and Figure 8 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that it is a method for preparing a polarizer.

[0056] S1: Fixing the substrate includes:

[0057] Attach the upper surface of the substrate to the base plate, and fix the base plate above the outer shell 101;

[0058] The substrate is cooled to reduce the temperature of the lower surface of the substrate.

[0059] During use, the substrate is secured above the outer shell 101. The substrate can be attached to the lower surface of the substrate and secured to the upper surface of the substrate using brackets or rods. The entire device and substrate are then placed in a vacuum environment. The substrate can be cooled using a water cooling pipe to lower the temperature of the substrate's lower surface, allowing gas molecules to condense on the lower surface when cooled. Furthermore, in a vacuum environment, the quantum dot layer material evaporates more easily, forming gas molecules, which can improve evaporation efficiency.

[0060] S2: Setting up the vacuum environment includes:

[0061] The substrate, the evaporation assembly 100 , the support assembly 200 , and the driving assembly 300 are placed in a vacuum environment.

[0062] S3: placing the quantum dot layer material into the first containing cavity 101a, and heating the first containing cavity 101a through the heating wire 102, so that the quantum dot layer material forms gas molecular clusters.

[0063] S4: The gas molecules condense into a quantum dot layer on the lower surface of the substrate.

[0064] The gas molecules pass through the first opening 101c and rise to the lower surface of the substrate, while driving the outer shell 101 to translate relative to the substrate;

[0065] The quantum dot layer material is placed in the first receiving chamber 101a, and the first receiving chamber 101a is heated to a first temperature by the heating wire 102, so that the quantum dot layer material forms a first gas molecule cluster;

[0066] The first gas molecules pass through the first opening 101c and rise to the lower surface of the substrate, while driving the outer shell 101 to translate relative to the substrate;

[0067] The first gas molecules condense on the lower surface of the substrate to form a first quantum dot layer;

[0068] Drive the outer shell 101 to rotate 90°;

[0069] The first receiving cavity 101a is heated to a second temperature by the heating wire 102 so that the quantum dot layer material forms a second gas molecule cluster;

[0070] The second gas molecules pass through the first opening 101c and rise to the lower surface of the substrate, while driving the outer shell 101 to translate relative to the substrate;

[0071] The second gas molecular clusters condense on the lower surface of the substrate to form a second quantum dot layer.

[0072] By energizing the heating wire 102, the quantum dot layer material inside the first accommodating cavity 101a can be heated. The quantum dot layer material forms gas molecules. The temperature of the gas molecules drops sharply in the air, and they will condense into gas molecular clusters with adjacent gas molecules to form quantum dots with a size of 1-10 nanometers. The gas molecular clusters move upward through the first opening 101c. When the quantum dot layer material in the gas molecular cluster state hits the lower surface of the substrate, it will condense on the lower surface of the substrate to form a quantum dot layer. The quantum dot layer is prepared using the principle of vacuum evaporation, and the quantum dots are more uniform. By controlling the heating wire 102 to increase the heating temperature, the speed at which the gas molecules formed by the quantum dot layer material move toward the substrate can be accelerated, and the volume of the gas molecules condensed into gas molecular clusters in the air can be reduced, so that the size of the quantum dots can be controlled. By driving the rotating shaft 202 to rotate 90° and driving the evaporation component 100 to rotate 90°, the substrate can be evaporated from another angle to form two layers of quantum dot layers with quantum dots of different sizes on the substrate. Compared with the quantum dot layer formed by coating, the two layers of quantum dot layers with different sizes can be clearly distinguished, and the quantum dots in each layer are more uniform. Moreover, vapor deposition in a vacuum environment can effectively prevent fine dust particles from contaminating the quantum dot layer, thereby effectively improving the quality of the quantum dot layer.

Claims

1. A polarizer preparation device, characterized in that: include, An evaporation component (100), the evaporation component (100) comprising an outer shell (101), a heating wire (102) and a movable plate (103); a first accommodating chamber (101a) and a second accommodating chamber (101b) are provided inside the outer shell (101); the first accommodating chamber (101a) is communicated with the outside through a first opening (101c); the second accommodating chamber (101b) is communicated with the first opening (101c) through a second opening (101d); a slot (101e) is provided at a position of the first opening (101c) corresponding to the second opening (101d); the movable plate (103) is slidably connected to an inner wall of the first opening (101c); and the heating wire (102) is provided inside the outer shell (101); A support assembly (200) comprising a support plate (201), a rotating shaft (202), a slide groove (203), a slider (204) and a sleeve (205); the outer shell (101) is fixedly connected to the sliders (204) on both sides; the sliders (204) are slidably connected to the inner wall of the slide groove (203); the bottom of the slide groove (203) is fixedly connected to the upper surface of the support plate (201); the lower surface of the support plate (201) is fixedly connected to one end of the rotating shaft (202); and the other end of the rotating shaft (202) is rotatably connected to the sleeve (205).

2. The polarizer preparation device according to claim 1, wherein: The support assembly (200) further includes a first driving member (206), the first driving member (206) including a first telescopic rod (206a), a first spring (206b) and a fixed plate (206c), the fixed plate (206c) being fixedly connected to the movable plate (103), the fixed plate (206c) being fixedly connected to one end of the first telescopic rod (206a), the other end of the first telescopic rod (206a) being fixedly connected to the inner wall of the second accommodating cavity (101b), and the first spring (206b) being arranged between the fixed plate (206c) and the inner wall of the second accommodating cavity (101b).

3. The polarizer preparation device according to claim 1, wherein: The support assembly (200) further includes a second driving member (207), the second driving member (207) including a second telescopic rod (207a), a second spring (207b) and a fixed block (207c), the fixed block (207c) being fixedly connected to the upper surface of the support plate (201), the fixed block (207c) being fixedly connected to one end of the second telescopic rod (207a), the other two ends of the second telescopic rod (207a) being fixedly connected to the outer wall of the outer shell (101), and the second spring (207b) being sleeved on the second telescopic rod (207a).

4. The polarizer preparation device according to claim 1, wherein: The support assembly (200) further includes a third driving member (208), the third driving member (208) including a mounting plate (208a), a third telescopic rod (208b), a third spring (208c), a tooth plate (208d) and a gear (208e), the bottom of the mounting plate (208a) being fixedly connected to the base (209), the upper surface of the base (209) being fixedly connected to the sleeve (205), the mounting plate (208a) being fixedly connected to one end of the third telescopic rod (208b), the other end of the third telescopic rod (208b) being fixedly connected to the tooth plate (208d), the tooth plate (208d) being meshed with the gear (208e), and the gear (208e) being fixedly connected to the rotating shaft (202).

5. The polarizer preparation device according to claim 4, wherein: The drive assembly (300) further comprises a cylinder (301), a first connecting pipe (302), a main pipe (303), a branch pipe (304), a second connecting pipe (305), and a third connecting pipe (306). An intake pipe (301a) is provided at one end of the cylinder (301), and an exhaust pipe (301b) is provided at the other end of the cylinder (301). The cylinder (301) is fixedly connected to one end of the first connecting pipe (302), and the other end of the first connecting pipe (302) is fixedly connected to the main pipe (303). The main pipe (303) is fixedly connected to one end of the branch pipe (304), the other end of the branch pipe (304) is fixedly connected to the first telescopic rod (206a), and the outer wall of the main pipe (303) is fixedly connected to the outer wall of the outer shell (101). The cylinder (301) is fixedly connected to one end of the second connecting pipe (305), the other end of the second connecting pipe (305) is fixedly connected to the second telescopic rod (207a), the cylinder (301) is fixedly connected to one end of the third connecting pipe (306), and the other end of the third connecting pipe (306) is fixedly connected to the third telescopic rod (208b).

6. The polarizer preparation device according to claim 5, wherein: The inner wall of the cylinder (301) is slidably connected to the piston head (301c), the piston head (301c) is fixedly connected to one end of the fourth spring (301d), and the other end of the fourth spring (301d) is fixedly connected to the inner end wall of the cylinder (301).

7. A method for preparing a polarizer based on the polarizer preparation device according to any one of claims 1 to 6, characterized in that: include, Fixing the substrate; Set up a vacuum environment; placing the quantum dot layer material into a first containing cavity (101a), and heating the first containing cavity (101a) to a first temperature via an electric heating wire (102), so that the quantum dot layer material forms a first gas molecule cluster; The first gas molecule group passes through the first opening (101c) and rises to the lower surface of the substrate, while driving the outer shell (101) to translate relative to the substrate; The first gas molecular clusters condense on the lower surface of the substrate to form a first quantum dot layer; Drive the outer shell (101) to rotate 90°; The first accommodating cavity (101a) is heated to a second temperature by means of an electric heating wire (102), so that the quantum dot layer material forms a second gas molecule cluster; The second gas molecule group passes through the first opening (101c) and rises to the lower surface of the substrate, while driving the outer shell (101) to translate relative to the substrate; The second gas molecular clusters condense on the lower surface of the substrate to form a second quantum dot layer.

8. The method for preparing a polarizer according to claim 7, wherein: Fixing the substrate includes: Attaching the upper surface of the substrate to the base plate, and fixing the base plate above the outer shell (101); The substrate is cooled to reduce the temperature of the lower surface of the substrate.

9. The method for preparing a polarizer according to claim 8, wherein: Setting up the vacuum environment includes: The substrate, the evaporation component (100), the support component (200) and the drive component (300) are placed in a vacuum environment.

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