Method of making an anti-bleed structure

Abstract

The application provides a manufacturing method of an anti-ink overflow structure. The manufacturing method of the anti-ink overflow structure comprises the following steps: a to-be-shielded area of an optical ineffective area in an optical lens is shielded, wherein the area of the to-be-shielded area is greater than one half of the area of the optical ineffective area; a region other than the to-be-shielded area of the optical ineffective area is scanned by a laser beam; the optical lens is heated; and the optical lens is cooled. The application solves the problem that ink overflow is prone to occurring in the process of coating ink on the optical lens in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical imaging equipment, in particular to a manufacturing method of an anti-ink overflow structure. BACKGROUND

[0002] Currently, the optical lens used in the field of optical imaging lens used in mobile phones needs to be miniaturized to the order of millimeters, and these optical lenses need to have an optical effective part for transmitting light and an optical ineffective part for bearing during assembly. Reflection and scattering of light in the optical ineffective part can produce various stray light and affect the imaging quality of the stray light on the imaging sensor. In order to suppress stray light imaging, it is necessary to perform ink coating or other light absorption processes on the optical ineffective part to reduce the generation of stray light. Good ink coating can improve image quality and enhance lens appearance. Currently, the ink coating process is mostly performed manually, and due to the small size of the lens, there may be a large amount of operation uncertainty, which reduces production efficiency and yield and increases cost. In addition, there are also some automatic or semi-automatic solutions for machine ink coating, but because the size and ink coating area of each lens are different, the precision of the machine is not enough to easily cause the optical effective part of some lenses to be affected by ink overflow. The machine also needs to increase the process of positioning the ink coating area on the lens, which can easily cause bottlenecks in production efficiency and yield. Currently, it is still necessary to optimize the lens structure to reduce ink overflow, unevenness and other inherent problems during the ink coating process, and improve the ink coating efficiency and production yield.

[0003] That is, the existing technology is prone to ink overflow during the process of coating the optical lens. SUMMARY

[0004] The main purpose of the present application is to provide a manufacturing method of an anti-ink overflow structure to solve the problem of ink overflow during the process of coating the optical lens in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a manufacturing method of an anti-ink overflow structure is provided, comprising: a to-be-shielded area of an optical ineffective area in an optical lens is shielded, wherein the area of the to-be-shielded area is greater than one half of the area of the optical ineffective area; a region other than the to-be-shielded area of the optical ineffective area is scanned by a laser beam; the optical lens is heated; and the optical lens is cooled.

[0006] Further, when the optical lens is heated, the heating temperature is greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius, and the heating time is greater than or equal to 60 minutes and less than or equal to 480 minutes.

[0007] Further, after the optical lens is cooled, the region scanned by the laser beam is coated.

[0008] Further, the wavelength of the laser beam for the laser beam scanning is 690nm or 800nm.

[0009] Further, the laser beam scanning is performed in an inert gas environment.

[0010] Further, the diameter of the focal point of the laser beam for the laser beam scanning is greater than or equal to 0.5um and less than or equal to 5um, and the energy density of the laser beam is greater than or equal to 0.01J / mm 2 and less than or equal to 0.1J / mm 2 .

[0011] Further, the laser beam comprises pulses of femtosecond laser, each pulse has a width greater than or equal to 1fs and less than or equal to 10fs, and the frequency of the pulse repetition is 0.1KHz and less than or equal to 10KHz.

[0012] Further, the laser beam comprises line scanning when scanning, and the density of the line scanning is less than or equal to 0.5.

[0013] Further, the polarization direction of the laser beam is parallel to the scanning direction of the laser beam.

[0014] According to another aspect of the present application, a method for manufacturing an anti-overflow ink structure is provided, comprising: shielding a to-be-shielded area of an optical ineffective area in an optical lens, wherein the area of the to-be-shielded area is less than one half of the area of the optical ineffective area; performing laser beam scanning on an area of the optical ineffective area other than the to-be-shielded area; heating the optical lens; and cooling the optical lens.

[0015] Further, when heating the optical lens, the heating temperature is greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius, and the heating time is greater than or equal to 60 minutes and less than or equal to 480 minutes.

[0016] Further, after cooling the optical lens, a film is coated on the area scanned by the laser beam.

[0017] Further, the wavelength of the laser beam for the laser beam scanning is 690nm or 800nm.

[0018] Further, the laser beam scanning is performed in an inert gas environment.

[0019] Further, the diameter of the focal point of the laser beam for the laser beam scanning is greater than or equal to 10um and less than or equal to 100um, and the energy density of the laser beam is greater than or equal to 0.5J / mm 2 and less than or equal to 5J / mm 2 .

[0020] Further, the laser beam comprises pulses of femtosecond laser, each pulse has a width greater than or equal to 1 fs and less than or equal to 5 fs, and the frequency of pulse repetition is 10 KHz and less than or equal to 1000 KHz.

[0021] Further, the laser beam comprises a line scan when scanning, and the density of the line scan is less than or equal to 0.7.

[0022] Further, the polarization direction of the laser beam is perpendicular to the scanning direction of the laser beam.

[0023] The application discloses a manufacturing method of an anti-ink overflow structure.

[0024] The application discloses a manufacturing method of an anti-ink overflow structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings constituting a part of the specification of the application are used to provide a further understanding of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0026] Figure 1 The application discloses a manufacturing method of an anti-ink overflow structure.

[0027] Figure 2 The application discloses a manufacturing method of an anti-ink overflow structure.

[0028] Figure 3 The application discloses a manufacturing method of an anti-ink overflow structure.

[0029] Figure 4 The application discloses a manufacturing method of an anti-ink overflow structure.

[0030] In the above drawings, the following reference signs are used:

[0031] 10, optical effective area; 20, to-be-shielded area; 30, scanning area. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that all technical and scientific terms used in the present application have the same meaning as that generally understood by those skilled in the art to which the present application belongs, unless otherwise specified.

[0034] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0035] In order to solve the problem of ink overflow in the process of coating ink on the optical lens in the prior art, the present application provides a manufacturing method of an anti-ink-overflow structure.

[0036] Embodiment one

[0037] As shown in Figures 1 to 3 The manufacturing method of the anti-ink-overflow structure includes: a to-be-shielded area 20 of an optical ineffective area in an optical lens is shielded, wherein the area of the to-be-shielded area 20 is greater than one half of the area of the optical ineffective area; a region other than the to-be-shielded area 20 of the optical ineffective area is scanned by a laser beam; the optical lens is heated; and the optical lens is cooled.

[0038] The scanning of the optical lens by the laser beam changes the hydrophilicity or hydrophobicity of the scanned region 30, so that the hydrophilicity of the ink-coating region is greater than that of the region adjacent to the ink-coating region, thereby reducing the outward ink overflow of the ink-coating region, greatly increasing the precision of the ink coating on the optical lens, increasing the production efficiency and yield of the optical imaging lens, and reducing the production cost. Heating the optical lens can increase the periodicity of the surface of the optical lens to further increase the hydrophilicity or hydrophobicity.

[0039] It should be noted that the scanned region 30 in the present application is the region of the optical ineffective area other than the to-be-shielded area 20, or the region scanned by the laser beam.

[0040] It should be noted that the optical lens used in the present embodiment is of hydrophobic material. For the optical lens originally having hydrophobicity, the hydrophobicity of the part of the optical ineffective area of the optical lens other than the ink coating area is further enhanced compared to the ink coating area, so as to facilitate the restriction of the ink in the ink coating area and avoid the ink overflowing into the optical effective area 10. In order to ensure that the ink coating area has sufficient area, the second area ratio is preferably greater than half of the area of the first area. Alternatively, in the present embodiment, the to-be-shielded area 20 is the ink coating area, and the hydrophobicity in the optical ineffective area on both sides of the ink coating area is increased to restrict the ink coating in the ink coating area, so as to prevent the ink coating from diffusing or moving to the optical effective area 10.

[0041] It should be noted that the optical effective area 10 is an area through which light can be transmitted, and the optical ineffective area is an area outside the optical effective area 10 through which light cannot be transmitted.

[0042] Specifically, considering the size of the optical ineffective area of the optical lens (generally below 1 mm) and in order to reduce stray light, the area that can be coated with ink should be large enough. The size of the ink coating area is preferably more than 50% of the area of the optical ineffective area to achieve sufficient effect of eliminating stray light. In the present application, the to-be-shielded area 20 is the ink coating area.

[0043] In the present embodiment, when the optical lens is heated, the heating temperature is greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius, and the heating time is greater than or equal to 60 minutes and less than or equal to 480 minutes. Heating the optical lens can promote the surface reconstruction of the optical lens, so that the periodicity of the surface of the optical lens is further improved to increase the hydrophilicity or hydrophobicity. Such setting can increase the surface reconstruction efficiency of the optical lens. After scanning is completed, heating can reduce the complexity of the surface and further increase the contact angle to improve the hydrophobicity.

[0044] In the present embodiment, after the optical lens is cooled, the area scanned by the laser beam is coated. By coating, a hydrophilic film or a hydrophobic film can be formed on the surface of the optical lens to change the hydrophilicity or hydrophobicity of the area scanned by the laser beam, so as to restrict the ink in the area with strong hydrophilicity. It should be noted that in the present embodiment, the coating can increase the hydrophobicity, and can include a known hydrophobic film composed of inorganic oxides such as silicon dioxide and aluminum oxide and organic components such as polytetrafluoroethylene, so as to further improve the hydrophobic property.

[0045] In the present embodiment, the wavelength of the laser beam for laser beam scanning is 690 nm or 800 nm. In order to adapt to the properties of optical lens materials such as glass or plastic, a laser beam with a wavelength of 690 nm or 800 nm is selected. Through the process of multi-photon absorption, the partial area of the optical lens is damaged to generate micro-nano scale structures, so as to change the hydrophilicity or hydrophobicity of the surface of the optical lens.

[0046] In the embodiment, the laser beam scanning is performed in an inert gas environment. Performing the operation in an environment of nitrogen, argon or the like can reduce chemical reactions that affect the performance of the optical lens, while also saving the cost of vacuum pumping, making the production of the ink overflow prevention structure more simple and convenient.

[0047] In the embodiment, the diameter of the focal point of the laser beam performing the laser beam scanning is greater than or equal to 0.5 um and less than or equal to 5 um, and the energy density of the laser beam is greater than or equal to 0.01 J / mm 2 and less than or equal to 0.1 J / mm 2 . Controlling the focal point and energy density of the laser beam within this range facilitates the formation of sub-micron hydrophobic structures, can also save power consumption and control the degree of damage to the surface appearance, so that the exposed structure is more beautiful. It should be noted that the sub-micron structure has better hydrophobicity.

[0048] In the embodiment, the laser beam includes pulses of femtosecond laser, each pulse has a width greater than or equal to 1 fs and less than or equal to 10 fs, and the pulse repetition frequency is 0.1 KHz and less than or equal to 10 KHz. Setting the laser beam to femtosecond laser can break the diffraction limit by controlling the laser intensity and ablation threshold to form micro-nano scale groove structures at the focal point of the laser beam ablation, and can also save power consumption and control the degree of damage to the surface appearance of the optical lens. Using pulses of femtosecond laser can ablate sub-micron structures or nano structures on the optical lens, thereby changing the hydrophilicity or hydrophobicity of the scanning area 30 to distinguish it from the to-be-shielded area 20, and limiting the ink to the hydrophilic structure part.

[0049] In the embodiment, the laser beam includes line scanning when scanning, and the line scanning density is less than or equal to 0.5. Such a setting can enhance the periodicity of the ablated structure, so that the surface structure of the ablated structure is more delicate, and the hydrophobicity is improved. Line scanning refers to scanning in the form of a line when scanning, which can be single or reciprocating through the scanning area 30, thereby forming a periodic feature similar to a stripe on the optical lens. The line scanning density can be defined by the width of the scanned line or the distance between adjacent scanned lines. The greater the line scanning density, the more dense the ablated area, the periodicity of the ablated structure is weakened, and the roughness is greater.

[0050] The greater the scanning density, the more dense the ablated area, the periodicity of the ablated structure is weakened, and tends to be random, thereby changing the hydrophobic or hydrophilic properties of the surface. The micro-nano structures formed by ablation in the first area help to change the contact area of water and solid surface, as well as the contact area of water and gas surface, thereby changing the original hydrophobic or hydrophilic properties of the surface. According to formula 1, it can be analyzed that

[0051]

[0052] wherein β is the contact angle, r is the surface roughness and is greater than 1, γ sv is the surface tension of the solid-gas interface, γ sl is the surface tension of the solid-liquid interface, and γ lv is the surface tension of the liquid-gas interface.

[0053] If the contact angle is less than 90 degrees, the surface is hydrophilic; if the contact angle is greater than 90 degrees, the surface is hydrophobic.

[0054] Since the cosine function decreases between 0 and 180 degrees, and cosβ is greater than 0 between 0 and 90 degrees, and cosβ is less than 0 between 90 degrees and 180 degrees, and since r is greater than 1, the roughness is positively correlated with both hydrophilicity and hydrophobicity. That is, in the range of hydrophilicity, the greater the roughness, the greater cosβ, and the stronger the hydrophilicity. In the range of hydrophobicity, the greater the roughness, the smaller cosβ, and the stronger the hydrophobicity. Since a certain surface γ sv , γ sl and γ lv are fixed, increasing the roughness of an optical lens with hydrophobic properties can increase the hydrophobicity of the optical lens, and increasing the roughness of an optical lens with hydrophilic properties can increase the hydrophilicity of the optical lens.

[0055] After measuring the surface contact angle of the optical lens by a contact angle meter or the like, an ablation scheme suitable for the surface is selected.

[0056] In this embodiment, the optical lens is made of a hydrophobic material, and the roughness of the optical lens is increased after scanning by the laser beam, thereby improving the hydrophobicity of the optical lens. Therefore, the areas on both sides of the area to be shielded 20 are scanned to enhance the hydrophobicity at the scanning area 30, and the ink application is limited to the area to be shielded 20 to reduce the ink overflow phenomenon. That is, in this embodiment, the area to be shielded 20 is the ink application area.

[0057] In this embodiment, the polarization direction of the laser beam is parallel to the scanning direction of the laser beam. At the same power, such arrangement makes the hydrophobicity better, enhances the periodicity of the surface ablation structure of the optical lens, and further improves the hydrophobicity of the surface of the optical lens, greatly reducing the ink overflow.

[0058] It should be noted that the optical lens is divided into an optically effective area 10 and an optically ineffective area. The optically effective area 10 is used for imaging, while the optically ineffective area is used for fixed installation. Although the optically ineffective area is not used for imaging, it can still cause reflection and refraction, resulting in unexpected stray light on the imaging surface of the optical imaging system. In order to suppress the stray light generated by the optically ineffective area, ink needs to be applied to the optically ineffective area.

[0059] Example 2

[0060] like Figure 4 As shown, the method for manufacturing the anti-ink spill structure includes: blocking the area 20 of the optical invalid region in the optical lens, wherein the area of ​​the area to be blocked 20 is less than half the area of ​​the optical invalid region; scanning the area of ​​the optical invalid region other than the area to be blocked 20 with a laser beam; heating the optical lens; and cooling the optical lens.

[0061] By scanning the optical lens with a laser beam to alter the hydrophilicity or hydrophobicity of the scanning area 30, the hydrophilicity of the inked area is made greater than that of the adjacent areas. This reduces ink overflow from the inked area, significantly increasing the precision of inking the optical lens, improving production efficiency and yield, and reducing production costs. Heating the optical lens can increase the periodicity of its surface, further enhancing its hydrophilicity or hydrophobicity.

[0062] The operation process in this embodiment can be referred to in Embodiment 1. Figure 2 and Figure 3 The flowchart.

[0063] It should be noted that the optical lens used in this embodiment is made of hydrophilic material. For an optical lens that is already hydrophilic, increasing the hydrophilicity of the scanning area 30 and the ink-coating area further increases the hydrophilicity of the area adjacent to the ink-coating area, making the hydrophilicity of the area adjacent to the ink-coating area less than that of the ink-coating area. This facilitates confining the ink within the ink-coating area and prevents it from overflowing into the optically effective area 10. To ensure the ink-coating area has sufficient area, the second area is preferably less than half the area of ​​the first area. Alternatively, in this embodiment, the area scanned by the laser beam is the ink-coating area. The increased hydrophilicity of the optical lens after laser scanning helps confine the ink within the ink-coating area, preventing the ink from diffusing or moving into the optically effective area 10.

[0064] It should be noted that the optically effective region 10 is the area where light can pass through, while the optically ineffective region is the area outside the optically effective region 10 where light cannot pass through.

[0065] Specifically, considering the size of the optical ineffective area of the optical lens (generally below 1mm) and in order to reduce stray light, the area that can be coated with ink should be large enough. The size of the ink coating area is preferably more than 50% of the area of the optical ineffective area to achieve sufficient effect of eliminating stray light. In the present application, the scanning area 30 is the ink coating area.

[0066] In the present embodiment, when the optical lens is heated, the heating temperature is greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius, and the heating time is greater than or equal to 60 minutes and less than or equal to 480 minutes. Heating the optical lens can promote the surface reconstruction of the optical lens, so that the periodicity of the surface of the optical lens is further improved to increase the hydrophilicity or hydrophobicity. Such settings can increase the efficiency of surface reconstruction of the optical lens.

[0067] In the present embodiment, after the optical lens is cooled, the area scanned by the laser beam is coated. By coating, a hydrophilic film or a hydrophobic film can be formed on the surface of the optical lens to change the hydrophilicity or hydrophobicity of the area scanned by the laser beam, and the ink coating is limited to the area with strong hydrophilicity. It should be noted that in the present embodiment, the coating can increase the hydrophilicity, and the coated film can include a combination of inorganic oxides such as silicon dioxide and aluminum oxide and organic substances such as PVDF and FEG to form a conventional hydrophilic film to enhance the hydrophilicity.

[0068] In the present embodiment, the wavelength of the laser beam for laser beam scanning is 690nm or 800nm. In order to adapt to the properties of optical lens materials such as glass or plastic, a laser with a wavelength of 690nm or 800nm is selected to cause damage to part of the area of the lens through a multi-photon absorption process to generate micro-nano scale structures to change the hydrophilicity or hydrophobicity of the surface of the optical lens.

[0069] In the present embodiment, laser beam scanning is performed in an inert gas environment. Performing the operation in a nitrogen or argon environment can reduce chemical reactions that affect the performance of the optical lens, while also saving the cost of vacuum pumping, making the production of the ink overflow prevention structure more simple and convenient.

[0070] In the present embodiment, the focusing point diameter of the laser beam for laser beam scanning is greater than or equal to 10um and less than or equal to 100um, and the energy density of the laser beam is greater than or equal to 0.5J / mm 2 and less than or equal to 5J / mm 2 . Increasing the focusing point size and energy density can easily form larger scale random hydrophilic structures to increase the hydrophilicity of the ink coating area, greatly reducing the occurrence of ink overflow.

[0071] In this embodiment, the laser beam comprises pulses of femto-second laser, each pulse has a width greater than or equal to 1 fs and less than or equal to 5 fs, and the frequency of the pulse repetition is 10 KHz and less than or equal to 1000 KHz. Increasing the time of the pulse will effectively increase the roughness, and in turn improve the hydrophilicity of the scanning area 30. Since the scanning area 30 in this embodiment is the inked area, the appearance of the inked area is not affected by the ink, which can allow more damage to the surface. The greater the roughness, the more ink can be limited, and the more hydrophilic it will be. The appearance of the inked area will eventually be covered by the ink, so it can withstand some damage to make it easier to form a hydrophilic structure. The pulses of femto-second laser can ablate sub-micron structures or nano structures on the optical lens, and in turn make the scanned area hydrophilic or hydrophobic, which is distinguished from the to-be-shielded area 20, and limits the ink to the hydrophilic structure part.

[0072] In this embodiment, the laser beam comprises line scanning when scanning, and the density of the line scanning is less than or equal to 0.7. Such a setting can enhance the randomness of the ablation structure, so as to improve the hydrophilicity. In other words, the more random the ablation structure of the inked area is, the stronger the hydrophilicity is. Line scanning refers to scanning in the form of a line when scanning. The scanning can be single or reciprocating through the scanning area 30, thereby forming a periodic feature similar to a stripe on the optical lens. The density of the line scanning can be defined by the ratio of the width of the scanned line to the distance between adjacent scanned lines. The greater the density of the line scanning, the more dense the ablated area, which weakens the periodicity of the ablation structure and tends to be more random, and the greater the roughness.

[0073] The greater the density of the line scanning, the more dense the ablated area, which weakens the periodicity of the ablation structure and tends to be more random, thereby changing the hydrophobic or hydrophilic properties of the surface. The micro-nano structure formed by ablation in the scanning area 30 helps to change the contact area of water and the solid surface, and the contact area of water and the gas surface, thereby changing the original hydrophobic or hydrophilic properties of the surface. According to formula 1, it can be analyzed that

[0074]

[0075] wherein β is the contact angle, r is the surface roughness and is greater than 1, γ sv is the surface tension of the solid-gas interface, γ sl is the surface tension of the solid-liquid interface, and γ lv is the surface tension of the liquid-gas interface.

[0076] If the contact angle is less than 90 degrees, the surface is hydrophilic; if the contact angle is greater than 90 degrees, the surface is hydrophobic.

[0077] Since the cosine function has a decreasing trend between 0 and 180 degrees, and cosβ is greater than 0 between 0 and 90 degrees, and cosβ is less than 0 between 90 degrees and 180 degrees, since r is greater than 1, the roughness is positively correlated with the hydrophilicity and the hydrophobicity. That is, in the range of hydrophilicity, the greater the roughness, the greater the cosβ, and the stronger the hydrophilicity. In the range of hydrophobicity, the greater the roughness, the smaller the cosβ, and the stronger the hydrophobicity. Since a certain surface γ sv , γ sl and γ lv are fixed, increasing the roughness of the optical lens with hydrophobic properties can increase the hydrophobicity of the optical lens, and increasing the roughness of the optical lens with hydrophilic properties can increase the hydrophilicity of the optical lens.

[0078] After measuring the surface contact angle of the optical lens by a contact angle measuring instrument, etc., an appropriate ablation scheme is selected for the surface.

[0079] In this embodiment, the optical lens is made of a hydrophilic material, and the roughness of the optical lens is increased after scanning by the laser beam, thereby improving the hydrophilicity of the optical lens. Therefore, the area between the areas to be shielded 20 is scanned to enhance the hydrophilicity at the scanning area 30, and the ink application is limited to the areas to be shielded 20 to reduce the phenomenon of ink overflow. That is, in this embodiment, the areas to be shielded 20 are ink application areas.

[0080] In this embodiment, the polarization direction of the laser beam is perpendicular to the scanning direction of the laser beam. Such arrangement can enhance the randomness of the surface ablation structure of the optical lens to improve the roughness of the surface of the ink application area, thereby improving the hydrophilicity. At the same power, such arrangement makes the hydrophilicity more optimal to reduce the periodicity of the surface ablation structure of the optical lens to further improve the hydrophilicity of the surface of the optical lens, and greatly reduces the ink overflow.

[0081] It should be noted that the optical lens is divided into an optical effective area 10 and an optical ineffective area. The optical effective area 10 is used for imaging, and the optical ineffective area is used for fixed installation. Although the optical ineffective area is not used for imaging, it can also cause reflection and refraction, etc. to cause unexpected stray light on the imaging surface of the optical imaging system. In order to suppress the stray light generated by the optical ineffective area, ink application needs to be performed on the optical ineffective area.

[0082] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0083] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, as the scope of the exemplary embodiments of this application is limited only by the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Also, unless otherwise indicated herein, the materials described herein can be used in a variety of applications.

[0084] It should be noted that the terms "first", "second", and the like, as used in the description and the claims herein are intended to modify a particular disclosed embodiment unless otherwise indicated, but do not imply that the architecture having such designation is either the first or second such embodiment made. It is also to be understood that the use of the terms "first", "second", and the like, are used to distinguish the particular elements being described and are not intended to indicate that either is either the first or second such element made or arranged in order or sequence.

[0085] The preferred embodiments of the application are described herein with reference to the accompanying drawings, in which the same or similar elements in the drawings are referred to with the same reference numerals. The application is not limited to the preferred embodiments described herein but can be practiced with modification and alteration within the scope of the present application. Accordingly, the specification and drawings are to be regarded in an illustrative, rather than a restrictive, sense.

Claims

1. A method for manufacturing an anti-ink overflow structure, characterized in that, include: The area (20) to be blocked in the optical invalid region of the optical lens is blocked, wherein the area of ​​the area to be blocked (20) is greater than half the area of ​​the optical invalid region; Laser beam scanning is performed on the area of ​​the optically invalid region other than the area to be blocked (20); The optical lens is heated to a temperature greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius for a duration greater than or equal to 60 minutes and less than or equal to 480 minutes. The optical lens is cooled; The optical lens is made of a hydrophobic material, and the area to be blocked (20) is the area to be coated with ink.

2. The method for manufacturing the anti-ink overflow structure according to claim 1, characterized in that, After cooling the optical lens, a coating is applied to the area scanned by the laser beam.

3. The method for manufacturing the anti-ink overflow structure according to claim 1, characterized in that, The wavelength of the laser beam used for the laser beam scanning is 690 nm or 800 nm.

4. The method for manufacturing the anti-ink overflow structure according to claim 1, characterized in that, The laser beam scanning is performed in an inert gas environment.

5. The method for manufacturing the anti-ink overflow structure according to any one of claims 1 to 4, characterized in that, The laser beam used for the laser beam scanning has a focal diameter greater than or equal to 0.5 μm and less than or equal to 5 μm, and the energy density of the laser beam is greater than or equal to 0.

01. And less than or equal to 0.1 .

6. The method for manufacturing the anti-ink overflow structure according to claim 5, characterized in that, The laser beam comprises femtosecond laser pulses, each pulse having a width greater than or equal to 1 fs and less than or equal to 10 fs, and the pulse repetition frequency being greater than or equal to 0.1 kHz and less than or equal to 10 kHz.

7. The method for manufacturing the anti-ink overflow structure according to claim 5, characterized in that, The polarization direction of the laser beam is parallel to the scanning direction of the laser beam.

8. A method for manufacturing an anti-ink overflow structure, characterized in that, include: The area (20) to be blocked in the optical invalid region of the optical lens is blocked, wherein the area of ​​the area to be blocked (20) is less than half the area of ​​the optical invalid region; Laser beam scanning is performed on the area of ​​the optically invalid region other than the area to be blocked (20); The optical lens is heated to a temperature greater than or equal to 100 degrees Celsius and less than or equal to 200 degrees Celsius for a duration greater than or equal to 60 minutes and less than or equal to 480 minutes. The optical lens is cooled; The optical lens is made of hydrophilic material, and the scanning area (30) of the laser beam is the ink-coated area.

9. The method for manufacturing the anti-ink overflow structure according to claim 8, characterized in that, After cooling the optical lens, a coating is applied to the area scanned by the laser beam.

10. The method for manufacturing the anti-ink overflow structure according to claim 8, characterized in that, The wavelength of the laser beam used for the laser beam scanning is 690 nm or 800 nm.

11. The method for manufacturing the anti-ink overflow structure according to claim 8, characterized in that, The laser beam scanning is performed in an inert gas environment.

12. The method for manufacturing the anti-ink overflow structure according to any one of claims 8 to 11, characterized in that, The focal diameter of the laser beam used for the laser beam scanning is greater than or equal to 10 μm and less than or equal to 100 μm, and the energy density of the laser beam is greater than or equal to 0.

5. And less than or equal to 5 .

13. The method for manufacturing the anti-ink overflow structure according to claim 12, characterized in that, The laser beam comprises femtosecond laser pulses, each pulse having a width greater than or equal to 1 fs and less than or equal to 5 fs, and the pulse repetition frequency being greater than or equal to 10 kHz and less than or equal to 1000 kHz.

14. The method for manufacturing the anti-ink overflow structure according to claim 12, characterized in that, The polarization direction of the laser beam is perpendicular to the scanning direction of the laser beam.

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