Manufacturing method of dot grating

Abstract

The invention discloses a manufacturing method of a dot grating, which comprises the following steps of: A, selecting a proper template according to specification parameters of the dot grating to be manufactured, and ensuring that the size and the shape of the template strictly meet preset manufacturing requirements so as to ensure the accuracy and the consistency in the subsequent manufacturing process; according to the invention, the film material and the template are subjected to effective flat pressing and fitting treatment under the action of the negative pressure equipment, and meanwhile, after negative pressure between the film material and the template is completed, synchronous cooling and shaping treatment can be carried out between the template and the film material in the negative pressure equipment; the situation that the negative pressure treatment and the cooling shaping treatment between the film material and the template need to be carried out separately is effectively avoided, and the pressure borne by the film material and the template is prevented from changing and fluctuating in the process of transferring from the negative pressure equipment; and the stability of the laminating pressure between the film material and the template and the cooling and shaping quality are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of dot gratings, and specifically to a method for manufacturing a dot grating. Background Art

[0002] A dot grating is a special optical material composed of countless neatly arranged spherical mirrors. Each dot is a miniature convex magnifying glass. Through a 360° rotation of the grating surface, the grating surface perceived by the naked eye is the same. Through the dot patterns printed on the bottom surface of the grating plate or the bottom plate material, the three-dimensional spatial transformation of the picture can be perceived. Compared with slit gratings and lenticular gratings, dot gratings have the advantages of all-round three-dimensionality and relatively lower spatial dizziness. During the manufacturing process of dot gratings, negative pressure treatment and cooling and shaping are usually required. Since the negative pressure treatment and cooling and shaping are often carried out separately, the pressure between the film material and the template during the cooling and shaping process will fluctuate compared with the pressure during the negative pressure process, seriously affecting the quality of cooling and shaping, and thus unable to meet the needs of personnel. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for manufacturing a dot grating to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A method for manufacturing a dot grating, the manufacturing method comprising the following steps:

[0005] A. Select a suitable template according to the specification parameters of the dot grating to be manufactured, ensuring that the size and shape of the template strictly conform to the preset manufacturing requirements to ensure the accuracy and consistency during the subsequent manufacturing process;

[0006] B. Perform effective cleaning on the surface of the selected template to remove impurities and oil stains on the template surface, and subsequently observe whether there are scratches and sand holes on the template surface to ensure that the quality of the selected template meets the manufacturing requirements;

[0007] C. Use a fully automated film laminating device to perform film laminating operation on the surface of the cleaned template, enabling the film material to be smoothly attached to the surface of the template, while ensuring that there are no quality defects such as air bubbles and wrinkles between the film material and the template;

[0008] D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material attached to the surface of the template, and precisely control the intensity and duration of the negative pressure to ensure that the film material is completely flat-pressed and attached to the template groove;

[0009] E. After the negative pressure is completed, immediately cool the template so that the film material on the template surface can be quickly and evenly cooled and solidified, ensuring that the film material can maintain an ideal shaped state and shape.

[0010] F. Subsequently, precisely prepare the electroplating solution required for electroplating the template to ensure that the composition of the electroplating solution meets the requirements of template electroplating. Place the cooled and shaped template in the electroplating solution, select a suitable electroplating process to form a uniform, dense, and moderately thick metal plate on the surface of the template. During the operation process, strictly control parameters such as current and voltage during electroplating, and real-time monitor indicators such as the temperature and concentration of the electroplating solution, and make timely adjustments and optimizations to ensure that the quality and performance of the metal plate reach the expected level.

[0011] G. After electroplating is completed, conduct a detailed surface quality inspection on the metal plate formed on the template surface, strictly check whether there are defects and flaws on the surface of the metal plate. If there are quality problems such as defects and flaws, conduct targeted repairs in a timely manner to ensure that the quality of the metal plate meets the production standards of the dot grating.

[0012] H. Subsequently, thoroughly clean the template that meets the quality requirements to remove any residual processing fluid and impurities, and use a drying device to blow-dry the water on the surface to ensure that the template is fully dried.

[0013] I. Place the fully dried template at a specific position inside the high-precision etching machine to ensure the stability of the template placement. After adjusting parameters such as the temperature and pressure of the high-precision etching machine according to the etching requirements of the film material on the template surface, then start the high-precision etching machine to etch the film material on the top of the template, and finally form the required dot grating.

[0014] J. Place the completed dot grating under the high-definition camera, and check the clarity of the pattern on the dot grating surface and the production accuracy through the display screen. If there are quality problems such as defects and flaws, promptly reject them. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid subsequent surface scratches.

[0015] Preferably, the template is a glass template with high temperature resistance and corrosion resistance.

[0016] Preferably, the film material is a BOPP film with good flexibility and adhesion.

[0017] Preferably, the negative pressure intensity range of the negative pressure device is -0.06 Mpa to -0.2 Mpa, and the time of the negative pressure is 15 min to 25 min.

[0018] Preferably, the negative pressure device is equipped with a pressure monitoring and automatic adjustment device.

[0019] Preferably, the temperature range of the cooling treatment is from 1°C to 5°C, and the time of the cooling treatment is from 8 min to 12 min.

[0020] Preferably, the current density of the electroplating is 1.5 A / dm 2 to 2 A / dm 2 , and the electroplating time is from 40 min to 50 min.

[0021] Preferably, the water flow rate of the cleaning treatment is from 5 L / min to 7 L / min, and the time of the cleaning treatment is from 2 min to 3 min.

[0022] Preferably, the drying temperature range of the drying equipment is from 45°C to 65°C, and the blowing and drying time of the drying equipment is from 1.5 min to 2 min.

[0023] Preferably, the etching temperature range of the high-precision etching machine is from 35°C to 45°C, and the etching pressure range of the high-precision etching machine is from 30 Pa to 50 Pa.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. While the present invention effectively performs a flat pressing and fitting treatment between the film material and the template under the action of a negative pressure device, after the negative pressure between the film material and the template is completed, a synchronous cooling and shaping treatment can be performed between the template and the film material inside the negative pressure device, effectively avoiding the need to separately perform the negative pressure treatment and the cooling and shaping treatment between the film material and the template, preventing the pressure between the film material and the template from changing and fluctuating during the transfer process from the negative pressure device, and ensuring the stability of the fitting pressure between the film material and the template and the quality of the cooling and shaping, thereby improving the quality of the dot grating production. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] To achieve the above object, the present invention provides the following technical solution: A method for manufacturing a dot grating, and the manufacturing method includes the following steps:

[0028] A. Select a suitable template according to the specification parameters of the dot grating to be produced, ensuring that the size and shape of the template strictly meet the pre-set production requirements to guarantee accuracy and consistency in the subsequent production process;

[0029] B. Effectively clean the surface of the selected template, remove impurities and oil stains on the template surface, and subsequently observe whether there are scratches, sand holes, etc. on the template surface to ensure that the quality of the selected template meets the production requirements;

[0030] C. Use a fully automated film laminating device to perform film laminating operations on the surface of the cleaned template, enabling the film material to fit smoothly on the surface of the template, while ensuring that there are no quality defects such as air bubbles and wrinkles between the film material and the template;

[0031] D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material adhered to the template surface, and precisely control the intensity and duration of the negative pressure to ensure that the film material is completely flat-pressed and adhered to the template grooves;

[0032] E. Immediately after the negative pressure is completed, cool the template to enable the film material on the template surface to be quickly and evenly cooled and cured, thereby ensuring that the film material can maintain an ideal shaped state and shape;

[0033] F. Subsequently, precisely prepare the electroplating solution required for the template electroplating to ensure that the composition of the electroplating solution meets the requirements of the template electroplating. Place the cooled and shaped template in the electroplating solution, select a suitable electroplating process to form a uniform, dense, and moderately thick metal plate on the surface of the template. During the operation, strictly control parameters such as current and voltage during the electroplating process, and monitor indicators such as the temperature and concentration of the electroplating solution in real time, and make timely adjustments and optimizations to ensure that the quality and performance of the metal plate reach the expected level;

[0034] G. After electroplating is completed, conduct a detailed surface quality inspection on the metal plate formed on the template surface, strictly check whether there are defects and flaws on the surface of the metal plate. If there are quality problems such as defects and flaws, conduct targeted repairs in a timely manner to ensure that the quality of the metal plate meets the production standards of the dot grating;

[0035] H. Subsequently, thoroughly clean the template that meets the quality requirements, remove any residual processing fluid and impurities, and use a drying device to blow-dry the water on the surface to ensure that the template is fully dried;

[0036] I. Place the fully dried template at a specific position inside the high-precision etching machine to ensure the stability of the template placement. After adjusting parameters such as the temperature and pressure of the high-precision etching machine according to the requirements of etching the film material on the template surface, then start the high-precision etching machine to etch the film material on the top of the template, and finally form the required dot grating for production.

[0037] J. Place the completed dot grating under the high-definition camera and check the clarity of the pattern on the surface of the dot grating and the production precision through the display screen. If there are quality problems such as defects and flaws, promptly remove them. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid scratches on the subsequent surface.

[0038] Example 1:

[0039] A method for manufacturing a dot grating, the manufacturing method comprising the following steps:

[0040] A. Select a suitable template according to the specification parameters of the required dot grating to be manufactured, ensuring that the size and shape of the template strictly meet the pre-set manufacturing requirements to guarantee the accuracy and consistency in the subsequent manufacturing process;

[0041] B. Conduct effective cleaning treatment on the surface of the selected template to remove impurities and oil stains on the template surface, and then observe whether there are scratches and sand holes on the template surface in the subsequent process to ensure that the quality of the selected template meets the manufacturing requirements;

[0042] C. Use a fully automated film laminating device to perform film laminating operation on the surface of the cleaned template, enabling the film material to fit smoothly on the surface of the template, and at the same time ensuring that there are no quality defects such as any air bubbles and wrinkles between the film material and the template;

[0043] D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material adhered to the template surface, and at the same time precisely control the intensity and duration of the negative pressure. The negative pressure intensity is -0.06 Mpa, and the negative pressure time is 15 min to ensure that the film material is completely flat-pressed and adhered to the template groove;

[0044] E. Immediately perform cooling treatment on the template after the negative pressure is completed. The temperature of the cooling treatment is 1 °C, and the cooling treatment time is 8 min, enabling the film material on the template surface to be quickly and uniformly cooled and solidified, and ensuring that the film material can maintain an ideal shaped state and shape;

[0045] F. Subsequently, precisely prepare the electroplating solution required for template electroplating to ensure that the composition of the electroplating solution meets the requirements of template electroplating. Place the template after cooling and shaping into the electroplating solution, select a suitable electroplating process to form a uniform, dense, and moderately thick metal plate on the surface of the template. During the operation, strictly control parameters such as current and voltage during electroplating. The current density is 1.5 A / dm 2 , the electroplating time is 40 min, and monitor indicators such as the temperature and concentration of the electroplating solution in real time, and make timely adjustments and optimizations to ensure that the quality and performance of the metal plate reach the expected level;

[0046] G. After electroplating is completed, conduct a detailed surface quality inspection on the metal plate formed on the surface of the template, strictly check whether there are any flaws and defects on the surface of the metal plate. If there are quality problems such as flaws and defects, conduct targeted repairs in a timely manner to ensure that the quality of the metal plate meets the production standards of the dot grating;

[0047] H. Subsequently, conduct a thorough cleaning treatment on the template that meets the quality requirements. The water flow rate during the cleaning treatment is 5 L / min, and the cleaning treatment time is 2 min to remove any residual processing fluid and impurities. Use a drying device to blow-dry the water on the surface. The drying temperature of the drying device is 45 °C, and the blow-drying time of the drying device is 1.5 min to ensure that the template is fully dried;

[0048] I. Place the fully dried template at a specific position inside a high-precision etching machine to ensure the stability of the template placement, and adjust parameters such as the temperature and pressure of the high-precision etching machine according to the requirements of etching the film material on the surface of the template. The etching temperature is 35 °C, and the etching pressure is 30 Pa. Then start the high-precision etching machine to etch the film material on the top of the template, and finally form the required dot grating for production;

[0049] J. Place the completed dot grating under a high-definition camera, and check the clarity of the pattern on the surface of the dot grating and the production accuracy through a display screen. If there are quality problems such as flaws and defects, promptly reject it. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid subsequent surface scratches.

[0050] Example 2:

[0051] A method for manufacturing a dot grating, the manufacturing method comprising the following steps:

[0052] A. Select a suitable template according to the specification parameters of the dot grating to be manufactured, ensure that the size and shape of the template strictly meet the pre-set manufacturing requirements to ensure the accuracy and consistency during subsequent manufacturing processes;

[0053] B. Effectively clean the selected template surface, remove impurities and oil stains on the template surface, and then observe whether there are scratches, sand holes, etc. on the template surface in the follow-up to ensure that the quality of the selected template meets the production requirements;

[0054] C. Use a fully automated film laminating device to perform film laminating operations on the cleaned template surface, so that the film material can be smoothly attached to the template surface, and at the same time ensure that there are no quality defects such as any air bubbles and wrinkles between the film material and the template;

[0055] D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material attached to the template surface, and at the same time precisely control the intensity and duration of the negative pressure. The negative pressure intensity is -0.11 Mpa, and the negative pressure time is 18 min to ensure that the film material is completely flat-pressed and attached to the template groove;

[0056] E. When the negative pressure is completed, immediately cool the template. The cooling temperature is 3°C, and the cooling time is 10 min, so that the film material on the template surface can be quickly and evenly cooled and solidified, ensuring that the film material can maintain an ideal shaped state and shape;

[0057] F. Subsequently, accurately prepare the electroplating solution required for electroplating the template to ensure that the composition of the electroplating solution meets the requirements of template electroplating. Place the cooled and shaped template in the electroplating solution, select a suitable electroplating process, so that a uniform, dense and moderately thick metal plate is formed on the surface of the template. During the operation, strictly control parameters such as current and voltage during electroplating. The current density is 1.75 A / dm 2 , the electroplating time is 45 min, and monitor indicators such as the temperature and concentration of the electroplating solution in real time, and make timely adjustments and optimizations to ensure that the quality and performance of the metal plate reach the expected level;

[0058] G. When the electroplating is completed, conduct a detailed surface quality inspection on the metal plate formed on the template surface, strictly check whether there are any defects and flaws on the surface of the metal plate. If there are quality problems such as defects and flaws, conduct targeted repairs in a timely manner to ensure that the quality of the metal plate meets the production standards of dot gratings;

[0059] H. Subsequently, thoroughly clean the template that meets the quality requirements. The water flow rate during the cleaning process is 6 L / min, and the cleaning time is 2.5 min to remove any residual processing fluid and impurities. Use a drying device to blow-dry the water on the surface. The drying temperature of the drying device is 55°C, and the blow-drying time of the drying device is 1.75 min to ensure that the template is fully dried;

[0060] I. Place the fully dried template at a specific position inside the high-precision etching machine to ensure the stability of the template placement. Adjust parameters such as the temperature and pressure of the high-precision etching machine according to the requirements of etching the film material on the template surface. The etching temperature is 40°C, and the etching pressure is 40 Pa. Then start the high-precision etching machine to etch the film material on the top of the template, and finally form the dot grating required for production.

[0061] J. Place the completed dot grating under the high-definition camera and check the clarity of the pattern on the surface of the dot grating and the production accuracy through the display screen. If there are quality problems such as defects and flaws, remove them in time. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid scratches on the subsequent surface.

[0062] Example Three:

[0063] A method for manufacturing a dot grating, the manufacturing method comprising the following steps:

[0064] A. Select a suitable template according to the specification parameters of the dot grating to be manufactured, ensuring that the size and shape of the template strictly meet the pre-set manufacturing requirements to ensure accuracy and consistency in the subsequent manufacturing process.

[0065] B. Conduct effective cleaning treatment on the surface of the selected template to remove impurities and oil stains on the template surface, and then observe whether there are scratches and sand holes on the template surface in the subsequent process to ensure that the quality of the selected template meets the manufacturing requirements.

[0066] C. Use a fully automated film laminating device to perform film laminating operation on the surface of the cleaned template, so that the film material can be smoothly attached to the surface of the template, and at the same time ensure that there are no quality defects such as air bubbles and wrinkles between the film material and the template.

[0067] D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material attached to the template surface, and at the same time precisely control the intensity and duration of the negative pressure. The negative pressure intensity is -0.2 Mpa, and the negative pressure time is 25 min to ensure that the film material is completely flat-pressed and attached to the template groove.

[0068] E. Immediately after the negative pressure is completed, cool the template. The cooling temperature is 5°C, and the cooling time is 12 min, so that the film material on the template surface can be quickly and evenly cooled and solidified, and ensure that the film material can maintain an ideal shaped state and shape.

[0069] F. Subsequently, the electroplating solution required for template electroplating is precisely formulated to ensure that the composition of the electroplating solution meets the requirements of template electroplating. The cooled and shaped template is placed in the electroplating solution, and a suitable electroplating process is selected to form a uniform, dense, and moderately thick metal plate on the surface of the template. During the operation, parameters such as current and voltage during electroplating are strictly controlled. The current density is 2 A / dm 2 , the electroplating time is 50 min, and indicators such as the temperature and concentration of the electroplating solution are monitored in real time, and adjustments and optimizations are made in a timely manner to ensure that the quality and performance of the metal plate reach the expected level;

[0070] G. After electroplating is completed, a detailed surface quality inspection is carried out on the metal plate formed on the surface of the template, and whether there are defects and flaws on the surface of the metal plate is strictly checked. If there are quality problems such as defects and flaws, targeted repairs are carried out in a timely manner to ensure that the quality of the metal plate meets the production standards of the dot grating;

[0071] H. Subsequently, the template that meets the quality requirements is thoroughly cleaned. The water flow rate during the cleaning process is 7 L / min, and the cleaning time is 3 min to remove any residual processing fluid and impurities. A drying device is used to blow-dry the water on the surface. The drying temperature of the drying device is 65 °C, and the blowing and drying time of the drying device is 2 min to ensure that the template is fully dried;

[0072] I. The fully dried template is placed at a specific position inside the high-precision etching machine to ensure the stability of the template placement. Parameters such as the temperature and pressure of the high-precision etching machine are adjusted according to the requirements of etching the film material on the surface of the template. The etching temperature is 45 °C, and the etching pressure is 50 Pa. Then, the high-precision etching machine is started to etch the film material on the top of the template, and finally the required dot grating is formed;

[0073] J. The completed dot grating is placed under the high-definition camera, and the clarity of the pattern on the surface of the dot grating and the production accuracy are checked through the display screen. If there are quality problems such as defects and flaws, they are promptly removed. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid subsequent surface scratches.

[0074] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a dot raster, characterized in that: The manufacturing method includes the following steps: A. Select a suitable template according to the specification parameters of the dot grating to be manufactured, ensuring that the size and shape of the template strictly conform to the preset manufacturing requirements to guarantee the accuracy and consistency in the subsequent manufacturing process; B. Effectively clean the surface of the selected template, remove impurities and oil stains on the template surface, and then observe whether there are scratches, sand holes, etc. on the template surface in the subsequent process to ensure that the quality of the selected template meets the manufacturing requirements; C. Use a fully automated film laminating device to perform film laminating operation on the surface of the cleaned template, enabling the film material to fit smoothly on the surface of the template, and at the same time ensuring that there are no quality defects such as bubbles and wrinkles between the film material and the template; D. Place the template after film laminating in a negative pressure device. While ensuring the stable placement of the template, use the negative pressure device to apply uniform negative pressure to the film material attached to the template surface, and precisely control the intensity and duration of the negative pressure to ensure that the film material is completely flat-pressed and attached to the template groove; E. Immediately cool the template after the negative pressure is completed, enabling the film material on the template surface to be quickly and evenly cooled and solidified, thereby ensuring that the film material can maintain an ideal shaped state and shape; F. Subsequently, precisely prepare the electroplating solution required for the template electroplating to ensure that the composition of the electroplating solution meets the requirements of the template electroplating. Place the cooled and shaped template in the electroplating solution, select a suitable electroplating process to form a uniform, dense and moderately thick metal plate on the surface of the template. Strictly control parameters such as current and voltage during the electroplating process, and monitor indicators such as the temperature and concentration of the electroplating solution in real time, and make timely adjustments and optimizations to ensure that the quality and performance of the metal plate reach the expected level; G. After the electroplating is completed, conduct a detailed surface quality inspection on the metal plate formed on the template surface, strictly check whether there are defects and flaws on the surface of the metal plate. If there are quality problems such as defects and flaws, conduct targeted repairs in a timely manner to ensure that the quality of the metal plate meets the manufacturing standards of the dot grating; H. Subsequently, thoroughly clean the template that meets the quality requirements, remove any residual processing fluid and impurities, and use a drying device to blow-dry the water on the surface to ensure that the template is fully dried; I. Place the fully dried template at a specific position inside a high-precision etching machine, ensure the stable placement of the template, adjust parameters such as the temperature and pressure of the high-precision etching machine according to the etching requirements of the film material on the template surface, and then start the high-precision etching machine to etch the film material on the top of the template, finally forming the required dot grating; J. Place the manufactured dot grating under a high-definition camera, and check the clarity and manufacturing precision of the pattern on the dot grating surface through a display screen. If there are quality problems such as defects and flaws, promptly eliminate them. If the quality of the dot grating fully meets the standards, the dot grating can be encapsulated with a packaging film to avoid scratches on the subsequent surface.

2. The manufacturing method of a dot raster according to claim 1, characterized in that: The template is a glass template with high temperature resistance and corrosion resistance.

3. The manufacturing method of a dot raster according to claim 1, characterized in that: The film material is a BOPP film with good flexibility and adhesion.

4. The manufacturing method of a dot raster according to claim 1, characterized in that: The negative pressure intensity range of the negative pressure device is from -0.06 Mpa to -0.2 Mpa, and the time of the negative pressure is from 15 min to 25 min.

5. The manufacturing method of a dot raster according to claim 1, wherein: The negative pressure device is equipped with a pressure monitoring and automatic adjustment device.

6. The manufacturing method of a dot raster according to claim 1, characterized in that: The temperature range of the cooling treatment is from 1 °C to 5 °C, and the time of the cooling treatment is from 8 min to 12 min.

7. A method for manufacturing a dot raster according to claim 1, characterized in that: The current density of the electroplating is 1.5 A / dm 2 to 2 A / dm 2 , and the electroplating time is 40 min to 50 min.

8. A method for manufacturing a dot raster according to claim 1, characterized in that: The water flow rate of the cleaning treatment is from 5 L / min to 7 L / min, and the time of the cleaning treatment is from 2 min to 3 min.

9. The manufacturing method of a dot raster according to claim 1, characterized in that: The drying temperature range of the drying device is from 45 °C to 65 °C, and the blowing and drying time of the drying device is from 1.5 min to 2 min.

10. The manufacturing method of a dot raster according to claim 1, characterized in that: The etching temperature range of the high-precision etching machine is from 35 °C to 45 °C, and the etching pressure range of the high-precision etching machine is from 30 Pa to 50 Pa.