3A cover plate maintenance method

Abstract

The invention provides a 3A cover plate maintenance method. The 3A cover plate maintenance method comprises the following steps that whether a scratched area of a 3A cover plate can be maintained or not is judged; when it is determined that the 3A cover plate can be maintained, a first area of the 3A cover plate is polished, and the first area comprises the scratch area; the polished first area is cleaned; anti-reflection liquid is sprayed to the first area, and the 3A cover plate is baked; and judging whether the maintenance operation is successful. According to the 3A cover plate maintenance method provided by the invention, the 3A cover plate can be effectively maintained, and the operation is simple.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a 3A cover plate repair method. Background Art

[0002] In the display module, a cover plate is placed on the light-emitting side of the display panel. A 3A cover plate refers to a glass cover plate with anti-glare (AG), anti-fingerprint (AF) and anti-reflection (AR) functions. The manufacturing process of the 3A cover plate itself is highly complex, costly, and difficult to repair. Summary of the invention

[0003] The disclosed embodiment provides a 3A cover plate repair method, which can solve the problem of repairing scratches on the 3A cover plate.

[0004] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] In a first aspect, an embodiment of the present disclosure provides a 3A cover plate repair method, comprising the following steps:

[0006] Determine whether the scratched area of ​​the 3A cover is repairable;

[0007] When it is determined that the 3A cover plate is repairable, grinding a first area of ​​the 3A cover plate, the first area including the scratched area;

[0008] cleaning the first area after polishing;

[0009] Spraying anti-reflection liquid onto the first area, and baking the 3A cover plate;

[0010] Determine whether the maintenance operation is successful.

[0011] Exemplarily, the determining whether the scratched area of ​​the 3A cover plate is repairable specifically includes:

[0012] Observe or detect the defect status at the scratch area of ​​the 3A cover plate, and based on the defect status, determine whether the scratch area of ​​the cover plate is repairable, wherein the defect status includes at least one of the defect area, defect depth, defect length, and defect type.

[0013] Exemplarily, the polishing of the first area of ​​the 3A cover plate specifically includes:

[0014] An operator holds a grinding tool or uses an electric grinding tool to grind the first area in a reciprocating friction manner, wherein during the reciprocating friction process, a moving speed of the grinding tool is lower than a threshold value.

[0015] Exemplarily, the grinding tool includes a square-shaped polishing sheet, wherein, during the reciprocating friction process, the polishing sheet is arranged perpendicular to the 3A cover plate, and one corner of the polishing sheet is aligned with the first area for friction.

[0016] Exemplarily, when the first area is polished by reciprocating friction, polishing liquid is dipped on the polishing tool for polishing.

[0017] Exemplarily, the step of spraying anti-reflection liquid onto the first region and baking the 3A cover plate specifically includes:

[0018] The process conditions for baking the 3A cover plate are as follows: a baking time of 1 to 3 hours and a baking temperature of 50 to 70°.

[0019] Exemplarily, the step of spraying the anti-reflection liquid onto the first region and baking the 3A cover plate specifically includes: baking the 3A cover plate for 2 hours at a temperature of 60°C.

[0020] Exemplarily, the determining whether the maintenance operation is successful specifically includes:

[0021] Spraying the first area of ​​the 3A cover plate;

[0022] Determine whether the maintenance work is successful based on the droplet distribution status.

[0023] Exemplarily, the spraying toward the first area of ​​the 3A cover plate specifically includes:

[0024] The steam engine sprays water mist onto the first area of ​​the cover plate.

[0025] Exemplarily, judging whether the maintenance operation is successful according to the droplet distribution state specifically includes:

[0026] When the droplets are evenly distributed, the maintenance operation is determined to be successful;

[0027] When the mist droplets aggregate, it is determined that the maintenance work has failed.

[0028] The beneficial effects brought by the embodiments of the present disclosure are as follows:

[0029] The 3A cover repair method provided in the embodiment of the present disclosure can first determine whether the scratched area on the 3A cover can be repaired for a scratched 3A cover. When it is determined that the 3A cover can be repaired, the first area of ​​the 3A cover including the scratched area can be polished. After the polishing is completed, the polished first area is cleaned, and then an anti-reflection liquid is sprayed on the first area, and the 3A cover is baked; after the baking is completed, it is determined whether the repair operation is successful. The above method can effectively repair the 3A cover, and the repair process operation is simple, which can solve the problems of high cost and high repair difficulty of 3A cover in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram showing the structure of the coating on the surface of the 3A cover plate in the embodiment of the present disclosure;

[0031] Figure 2 A flow chart showing a 3A cover plate repair method in an embodiment of the present disclosure;

[0032] Figure 3 The morphology of the AG film on the 3A cover plate under a microscope is shown;

[0033] Figure 4 This shows the metallographic diagram of the AG film of the 3A cover before repair;

[0034] Figure 5 It shows the metallographic diagram of AG film of 3A cover plate after repair;

[0035] Figure 6 It is a schematic structural diagram showing the process of grinding on the 3A cover plate by using the grinding tool 20 in step S02 in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] The features such as "parallel", "perpendicular", and "same" used in the embodiments of the present disclosure include the features such as "parallel", "perpendicular", and "same" in a strict sense, as well as the cases where "approximately parallel", "approximately perpendicular", "approximately the same", etc. include certain tolerances, taking into account the tolerances associated with the measurement of specific quantities (e.g., the limitations of the measurement system), and represent the acceptable deviation range for a specific value determined by ordinary technicians in the field. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

[0039] In addition, in this document, unless otherwise defined, the terms "substantially", "essentially", "approximately" and "about" are used to describe and explain small changes. When used with an event or situation, these terms can cover situations where the event or situation occurs exactly, and can also cover situations where the event or situation occurs approximately. For example, when used with a numerical value, these terms can include a range of variation of less than or equal to 10% of the numerical value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, less than or equal to ±0.05%. The term "substantially coplanar" can refer to two objects arranged along the same plane in the micrometer range, for example, arranged along the same plane within 40μm, 30μm, 20μm, 10μm or 1μm.

[0040] It should be understood that in the exemplary embodiments of the present disclosure, when a layer or an element is referred to as being on another layer or substrate, the layer or element may be directly on the other layer or substrate, or there may be an intermediate layer between the layer or element and the other layer or substrate. "A and B are arranged on the same layer" means that after A and B adopt the same film forming process to form a film layer for forming a specific pattern, a layer structure is formed by a single patterning process using the same mask.

[0041] In the display module, the light-emitting side of the display panel is covered with a cover plate, which can protect the display panel. The 3A cover plate refers to a glass cover plate with anti-glare (AG), anti-fingerprint (AF) and anti-reflection (AR) functions.

[0042] The substrate of the 3A cover plate can be made of glass material or polyester material, such as halide glass. The substrate of the 3A cover plate has a first surface and a second surface. A coating film can be made by evaporation or coating process and attached to the first surface of the substrate. The second surface of the substrate can be attached with a layer of shading material by silk screen ink or other methods to produce a specific pattern to achieve some image effects, such as black silk screen and white buttons.

[0043] See also Figure 1 As shown, the coating layers on the 3A cover plate mainly include: high-penetration anti-reflection coating (AR) 100, anti-glare coating (AG) 200, anti-fingerprint and anti-oil coating (AF) 300, etc.

[0044] In the related art, the repair of the cover plate is generally for ordinary glass cover plates, while the manufacturing process of the 3A cover plate itself is highly complex, the cost is high, and the repair difficulty is extremely high.

[0045] In order to solve the above problems, Figure 2 As shown, the embodiment of the present disclosure provides a 3A cover repair method, comprising the following steps:

[0046] Step S01, determining whether the scratched area of ​​the 3A cover plate is repairable;

[0047] In this step, the defect state of the scratched area of ​​the 3A cover plate can be observed or detected, and based on the defect state, it can be judged whether the scratched area of ​​the cover plate is repairable, wherein the defect state includes at least one of the defect area, defect depth, defect length, and defect type.

[0048] Exemplarily, the defect state at the scratched area can be observed or detected by touch or tool detection. For example, the operator can touch the scratched area of ​​the 3A cover plate based on the touch feeling. If the defect can be clearly felt by the touch feeling, it is determined that the scratched area of ​​the 3A cover plate is not repairable; if the defect cannot be clearly felt by the touch feeling, it is determined that the scratched area of ​​the 3A cover plate is repairable. This method is simple to operate, does not require special tools, and is low in cost.

[0049] Of course, it is understandable that a detection tool may be used to detect the defect state, for example, by image detection or optical detection to detect whether the defect state is repairable.

[0050] Step S02: When it is determined that the 3A cover plate is repairable, grinding a first area of ​​the 3A cover plate, where the first area includes the scratched area;

[0051] In this step, illustratively, an operator may hold a grinding tool or use an electric grinding tool to grind the first area by reciprocating friction, wherein during the reciprocating friction process, the moving speed of the grinding tool is lower than a threshold value.

[0052] In some embodiments, the grinding tool can be manually held by an operator to perform a low-speed reciprocating motion. The threshold value can be, for example, 50 reciprocating motions per minute.

[0053] In other embodiments, the grinding tool may also be an electric grinding tool, such as an electric grinding wheel tool, etc. The threshold may be, for example, 50 reciprocating motions per minute.

[0054] It should be noted that in this step, the grinding time can be 3 to 8 minutes, for example, the grinding time can be 5 minutes.

[0055] For example, the grinding tool may include a square-shaped polishing sheet. For example, the polishing sheet may be made of the same abrasive as the surface material of the 3A cover plate. Figure 6 As shown, during the reciprocating friction process, the polishing sheet is arranged perpendicular to the 3A cover plate, and one corner of the polishing sheet is aligned with the first area for friction.

[0056] Furthermore, in some embodiments, when the first area is polished by reciprocating friction, polishing liquid is dipped on the polishing tool for polishing.

[0057] The polishing liquid may be selected from materials having a formula as shown in Table 1 below.

[0058] Table 1

[0059]

[0060] Step S03, cleaning the first area after polishing;

[0061] In this step, after the 3A cover plate is polished, the 3A cover plate may be wiped with a dust-free cloth or the like to clean the surface of the 3A cover plate.

[0062] Step S04, spraying anti-reflection liquid (AF liquid) onto the first area, and baking the 3A cover plate;

[0063] In this step, the process conditions for baking the 3A cover plate may be: a baking time of 1 to 3 hours and a baking temperature of 50 to 70°. For example, the baking time is 2 hours and the baking temperature is 60°.

[0064] In this way, in the above-mentioned step S02, the polishing sheet can be used to grind the surface of the AF film. Therefore, after the grinding is completed, in the above-mentioned step S03, AF liquid can be sprayed on the first area and the AF liquid can be baked to simulate the forming process of the AF film to form an AF film in the first area and repair the damaged parts of the AF film during the grinding process.

[0065] The AF fluid may be selected from materials having a formula as shown in Table 2 below.

[0066] Table 2

[0067]

[0068]

[0069] Wherein, the auxiliary agent A may be a fatty acid lead salt; the auxiliary agent B may be methylhexahydrophthalic anhydride; and the surfactant may be one or more of silicon monoxide, silicon dioxide, and titanium dioxide.

[0070] Step S05: Determine whether the maintenance operation is successful.

[0071] In this step, it is determined whether the maintenance operation is successful, including:

[0072] Step S051, spraying toward the first area of ​​the 3A cover plate;

[0073] Step S052: Determine whether the maintenance operation is successful based on the droplet distribution state.

[0074] Exemplarily, the step S051 specifically includes spraying water mist to the first area of ​​the cover plate through a steam engine. The step S052 specifically includes: when the mist droplets are evenly distributed, determining that the maintenance operation is successful; when the mist droplets are aggregated, determining that the maintenance operation is failed.

[0075] After the 3A cover plate is repaired by the 3A cover plate repair method provided in the embodiment of the present disclosure, when it is determined that the repair operation is successful, the 3A cover plate can be returned to the quality inspection section of the 3A cover plate, and the 3A cover plate can be quality inspected again. When the quality inspection is qualified, the 3A cover plate is marked as a qualified product and subsequent processes are carried out; when the quality inspection is still unqualified, the 3A cover plate can be repaired a second time according to the 3A cover plate repair method in the embodiment of the present disclosure, or directly marked as an unqualified product.

[0076] The maintenance principle of the 3A cover plate maintenance method provided in the embodiment of the present disclosure is described below.

[0077] Figure 3 The morphology of the 3A cover plate observed under a microscope is shown. Figure 3 It can be seen that the AG film in the 3A cover plate appears as full and dense concave and convex points under a microscope, while the AF film and AR film are invisible under a microscope.

[0078] Figure 4 The metallographic image of the 3A cover plate before repair is shown. There are many types of defects on the 3A cover plate. For example, one type of defect is as follows: the AG film has no scratches under the microscope, but foreign matter accumulates in the concave and convex points of the AG film, resulting in visible scratch defects on the appearance of the 3A cover plate.

[0079] For the above-mentioned defect types, in the 3A cover plate repair method provided in the embodiment of the present disclosure, the foreign matter in the concave and convex point slits of the AG film will be brought out by using a grinding tool to rub the scratched area back and forth at a low speed. Figure 5 The metallographic diagram of the 3A cover after repair is shown. Figure 5 It can be seen that after polishing, the AG film is not damaged, only foreign matter is taken out, and after polishing, the AF film is repaired with AF liquid, thereby achieving the purpose of repairing the scratches on the appearance of the 3A cover.

[0080] In addition, in order to determine whether the AG film, AF film and AR film were damaged during the repair process of the 3A cover plate, a reliability test was conducted on the repaired 3A cover plate. The test results are shown in Table 3.

[0081] Table 3

[0082]

[0083] The Lab color space is a color model based on human visual perception. It consists of three values: L, a, and b. The Lab color space can fully describe the color of an object. In Table 3, L represents brightness, which indicates the brightness of an object. Its value range is from 0 to 100, where 0 represents black and 100 represents white. a represents red-greenness, which indicates the color bias of an object between red and green. The closer to negative values, the closer to green, and the closer to positive values, the closer to red. b represents yellow-blueness, which indicates the color bias of an object between yellow and blue. The closer to negative values, the closer to blue, and the closer to positive values, the closer to yellow.

[0084] It can be seen from Table 3 above that the 3A cover plate repair method provided in the embodiment of the present disclosure does not damage the AG film and the AR film, and the AF film can be repaired well; the product characteristic test after repair is no different from that of qualified products. The 3A cover plate repair method provided in the present disclosure can effectively repair the 3A cover plate.

[0085] There are a few points to note:

[0086] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0087] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0088] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0089] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A 3A cover repair method, characterized in that: The steps include: Determine whether the scratched area of ​​the 3A cover is repairable; When it is determined that the 3A cover plate is repairable, grinding a first area of ​​the 3A cover plate, the first area including the scratched area; cleaning the first area after polishing; Spraying anti-reflection liquid onto the first area, and baking the 3A cover plate; Determine whether the maintenance operation is successful.

2. The 3A cover repair method according to claim 1, characterized in that: The step of judging whether the scratched area of ​​the 3A cover plate is repairable specifically includes: Observe or detect the defect status at the scratch area of ​​the 3A cover plate, and based on the defect status, determine whether the scratch area of ​​the cover plate is repairable, wherein the defect status includes at least one of the defect area, defect depth, defect length, and defect type.

3. The 3A cover repair method according to claim 1, characterized in that: The polishing of the first area of ​​the 3A cover plate specifically includes: An operator holds a grinding tool or uses an electric grinding tool to grind the first area in a reciprocating friction manner, wherein during the reciprocating friction process, a moving speed of the grinding tool is lower than a threshold value.

4. The 3A cover repair method according to claim 3, characterized in that: The grinding tool comprises a square-shaped polishing sheet, wherein during the reciprocating friction process, the polishing sheet is arranged perpendicular to the 3A cover plate, and one corner of the polishing sheet is aligned with the first area for friction.

5. The 3A cover repair method according to claim 4, characterized in that: When the first area is polished by reciprocating friction, the polishing tool is dipped in polishing liquid for polishing.

6. The 3A cover repair method according to claim 1, characterized in that: The step of spraying the anti-reflection liquid onto the first area and baking the 3A cover plate specifically includes: The process conditions for baking the 3A cover plate are as follows: a baking time of 1 to 3 hours and a baking temperature of 50 to 70°.

7. The 3A cover repair method according to claim 1, characterized in that: The step of spraying the anti-reflection liquid onto the first region and baking the 3A cover plate specifically includes: baking the 3A cover plate under the following process conditions: a baking time of 2 hours and a baking temperature of 60°.

8. The 3A cover repair method according to claim 1, characterized in that: The determining whether the maintenance operation is successful specifically includes: Spraying the first area of ​​the 3A cover plate; Determine whether the maintenance work is successful based on the droplet distribution status.

9. The 3A cover repair method according to claim 8, characterized in that: The spraying toward the first area of ​​the 3A cover plate specifically includes: The steam engine sprays water mist onto the first area of ​​the cover plate.

10. The 3A cover repair method according to claim 8, characterized in that: The determining whether the maintenance operation is successful according to the droplet distribution state specifically includes: When the droplets are evenly distributed, the maintenance operation is determined to be successful; When the mist droplets aggregate, it is determined that the maintenance work has failed.

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