Surface treatment process for glass-based display circuit board

Abstract

The invention relates to the technical field of electronic surface treatment processes, in particular to a surface treatment process for a glass-based display circuit board, which specifically comprises the following steps of: 1, pre-treating the circuit board; step 2, carrying out chemical nickel gold treatment on the surface of the circuit board after the step 1; step 3, performing wind shear treatment on the surface of the circuit board after the step 2; step 4, scrubbing the surface of the circuit board in the step 3; 5, performing liquid medicine treatment on the surface of the circuit board in the step 4; step 6, drying the surface of the circuit board in the step 5; and step 7, packaging the circuit board after the step 6 to obtain a finished product. By improving the cleaning process of the surface of the circuit board, the problems that the service life of the circuit board is short, the resistance welding performance is poor, the routing performance is low and the like due to incomplete cleaning are solved, and the technical problem that cleaning is insufficient in an existing circuit board surface treatment process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic surface treatment technology, and in particular to a surface treatment technology for a glass-based display circuit board. Background Art

[0002] With the development of science and technology, electronic products have developed rapidly in recent years, especially the terminal products with the development trend of light, thin, short and small have put forward higher density, smaller size, higher conductivity and other requirements for its basic industry - printed circuit boards, so printed circuit boards with epoxy glass cloth as the substrate have appeared.

[0003] In the production process of circuit boards, surface treatment is one of the most important steps. Common circuit board surface treatment methods on the market include tin spraying, tin sinking, gold sinking, bare copper, OSP, etc., and the advantages and disadvantages of different surface treatment methods are also different. However, common surface treatments cannot meet all solder mask requirements, so the nickel-gold process has emerged to solve this problem. However, the existing nickel-gold process only uses multiple pure water cleaning, soaking and brushing treatments after coating the surface of the circuit board. This cleaning method makes the cleaning of the surface of the circuit board not thorough, and the cleaning steps are cumbersome. The impurities left in the solution due to incomplete cleaning will shorten the service life of the circuit board, and cause the circuit board to have problems such as poor solder mask performance and low wire bonding performance.

[0004] Therefore, there is a technical problem of insufficient cleaning in the existing surface treatment process of glass-based display circuit boards. Summary of the invention

[0005] In order to overcome the defects of the prior art mentioned in the above content, the present invention proposes a surface treatment process for a glass-based display circuit board. By improving the cleaning process of the circuit board surface, the circuit board surface can be efficiently and fully cleaned with a simple process operation, thereby avoiding the short service life of the circuit board due to incomplete cleaning, and causing the circuit board to have poor solder resistance performance and low wire bonding performance. The technical problem of insufficient cleaning existing in the existing circuit board surface treatment process is solved.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts but is not limited to the following scheme. Specifically, the present invention provides a surface treatment process for a glass-based display circuit board, and the surface treatment process for a glass-based display circuit board specifically includes the following steps:

[0007] Step 1: pre-process the circuit board;

[0008] Step 2, performing nickel-gold treatment on the surface of the circuit board completed in step 1;

[0009] Step 3, performing wind shearing treatment on the surface of the circuit board completed in step 2;

[0010] Step 4, scrubbing the surface of the circuit board in step 3;

[0011] Step 5, treating the surface of the circuit board in step 4 with a liquid medicine;

[0012] Step 6, drying the surface of the circuit board in step 5;

[0013] Step seven, packaging the circuit board completed in step six to obtain a finished product.

[0014] The above-mentioned glass-based display circuit board surface treatment process performs wind shear treatment on the surface of the circuit board after the nickel-gold treatment, so that the water stains on the surface of the circuit board are blown off, reducing the pollution of the solvent in step one to the subsequent cleaning process, facilitating the improvement of the cleanliness, reducing the frequency of solvent replacement, and reducing the cost of solvent. At the same time, when the wind shear treatment blows the water stains off the surface of the circuit board, the water droplets roll on the surface of the circuit board and continuously contact with the air, making the evaporation of the water stains more convenient, thereby improving the cleanliness. The scrubbing treatment and the liquid medicine treatment further strengthen the cleaning of the impurities on the surface of the circuit board. The combination of wind shear treatment and drying treatment can greatly shorten the drying market, improve the drying efficiency, reduce the drying energy consumption, and thus reduce the industrial cost. The surface of the circuit board can be efficiently and fully cleaned with a simple process operation, avoiding the problems of short service life of the glass-based display circuit board due to incomplete cleaning, poor solder resistance performance, low wire bonding performance, etc., and solving the technical problem of insufficient cleaning in the existing glass-based display circuit board surface treatment process.

[0015] Furthermore, the surface treatment process of the glass-based display circuit board includes conveying the circuit board along a predetermined path, and providing a wind cutting device to perform wind cutting treatment on the circuit board surface after each solvent cleaning of the circuit board surface on the predetermined path. The wind cutting treatment is performed on the circuit board surface after each solvent cleaning of the circuit board surface, thereby improving the cleanliness of the circuit board surface, while avoiding the contamination of the next cleaning solvent by the previous cleaning solvent, ensuring the integrity of each cleaning process, and making each cleaning process more sufficient and thorough.

[0016] Furthermore, the wind shear treatment uses vertical wind shear to blow water off the surface of the circuit board. The vertical wind shear makes the wind shear treatment efficient and low in energy consumption.

[0017] Furthermore, the surface treatment process of the glass-based display circuit board also includes performing a nickel-gold treatment on the surface of the circuit board and a wind shear treatment, and then performing a heating and soaking treatment on the surface of the circuit board. The heating and soaking treatment softens impurities attached to the surface of the circuit board that are difficult to wash and blow off, thereby making it easier to clean and treat the impurities.

[0018] Furthermore, the heating temperature during the heating and soaking treatment is 40°C to 60°C.

[0019] Furthermore, the surface treatment process of the glass-based display circuit board includes at least three scrubbing treatments, one of which is a detergent scrubbing treatment on the circuit board surface after the circuit board surface is heated and soaked and subjected to wind shear treatment II; one of which is a pure water scrubbing treatment I on the circuit board surface after the circuit board surface is subjected to detergent scrubbing treatment and wind shear treatment III on the circuit board surface; and one of which is a pure water scrubbing treatment II on the circuit board surface after the circuit board surface is subjected to pure water scrubbing treatment I and wind shear treatment IV on the circuit board surface. The detergent scrubbing removes the stubborn impurities and / or water stains remaining on the circuit board surface, and multiple scrubbing treatments repeatedly remove the impurities and / or water stains on the circuit board surface, ensuring that the scrubbing treatment of the circuit board surface is sufficient and thorough.

[0020] Further, the liquid medicine treatment includes:

[0021] Perform two-fluid cleaning on the surface of the circuit board;

[0022] The surface of the circuit board after the two-fluid cleaning treatment is subjected to QDR cleaning treatment.

[0023] It can be understood that the two-fluid cleaning treatment dissolves and removes the dust on the surface of the circuit board that is difficult to clean by brushing, and the DQR cleaning treatment thoroughly cleans the residual medicine from the two-fluid cleaning treatment to make the surface of the circuit board clean. The coordination of the two-fluid cleaning treatment and the DQR cleaning treatment ensures that the cleaning of the surface of the circuit board is sufficient and thorough.

[0024] Furthermore, in the surface treatment process of the glass-based display circuit board, a treatment tank is used to perform nickel-gold treatment and liquid treatment on the surface of the circuit board, and the surface treatment process of the glass-based display circuit board also includes filtering the tank liquid. The filtering process ensures that each solvent is independent and complete, and fully utilizing the solvent to achieve the cleaning effect that the solvent can bring is the ideal state of the solvent in the process flow. The filtering process avoids the presence of other impurities in the solvent that affect the solvent from reaching the ideal state.

[0025] Furthermore, the surface treatment process of the glass-based display circuit board also includes exhausting the processing environment of the circuit board during the entire process. The exhaust process extracts the air in the processing environment of the circuit board to ensure the cleanliness of the air in the processing environment of the circuit board and avoid the presence of mutually reactive gases and / or harmful gases in the air.

[0026] Furthermore, the surface treatment process of the glass-based display circuit board also includes loading and unloading the circuit board through an automatic loading and scanning device and an automatic unloading device after the surface of the circuit board is treated with nickel and gold. The automatic loading and unloading process makes the entire process more efficient and avoids the harm to the human body caused by chemicals attached to the surface of the circuit board due to manual operation.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention performs wind shear treatment on the surface of the circuit board after the nickel-gold treatment, so that the water stains on the surface of the circuit board are blown off, reducing the pollution of the solvent in step one to the subsequent cleaning process, facilitating the improvement of the cleanliness, reducing the frequency of solvent replacement, and reducing the cost of solvent. At the same time, when the wind shear treatment blows the water stains off the surface of the circuit board, the water droplets roll on the surface of the circuit board and continuously contact with the air, making the evaporation of the water stains more convenient, thereby improving the cleanliness. The scrubbing treatment and the liquid medicine treatment further strengthen the cleaning of the impurities on the surface of the circuit board. The wind shear treatment and the drying treatment can greatly shorten the drying market, improve the drying efficiency, reduce the drying energy consumption, and thus reduce the industrial cost. The surface of the circuit board can be efficiently and fully cleaned with a simple process operation, avoiding the problems of short service life of the glass-based display circuit board due to incomplete cleaning, poor solder resistance performance, low wire bonding performance, etc., and solving the technical problem of insufficient cleaning in the existing surface treatment process of the glass-based display circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 The process of surface treatment of glass-based display circuit board provided in this embodiment Figure 1 .

[0031] Figure 2 The process of surface treatment of glass-based display circuit board provided in this embodiment Figure 2 .

[0032] Figure 3 This is a flow chart of the brushing treatment of the surface treatment process of the glass-based display circuit board provided in this embodiment.

[0033] Figure 4 This is a flow chart of the liquid treatment process for the surface treatment of the glass-based display circuit board provided in this embodiment. DETAILED DESCRIPTION

[0034] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0035] Example

[0036] In view of the technical problem of insufficient cleaning existing in the prior art, the present invention proposes a surface treatment process for a glass-based display circuit board. By improving the cleaning process of the circuit board surface, the circuit board surface can be efficiently and fully cleaned with a simple process operation, thereby avoiding the problems of short service life of the circuit board due to incomplete cleaning, poor solder resistance performance, low wire bonding performance, etc. of the circuit board, and solving the technical problem of insufficient cleaning existing in the existing circuit board surface treatment process.

[0037] See also Figure 1 In order to achieve the above-mentioned purpose, the technical solution specifically adopted by the present invention is a surface treatment process of a glass-based display circuit board, and the surface treatment process of a glass-based display circuit board specifically includes the following steps:

[0038] Step 1: pre-process the circuit board;

[0039] Step 2, performing nickel-gold treatment on the surface of the circuit board completed in step 1;

[0040] Step 3, performing wind shearing treatment on the surface of the circuit board completed in step 2;

[0041] Step 4, scrubbing the surface of the circuit board in step 3;

[0042] Step 5, treating the surface of the circuit board in step 4 with a liquid medicine;

[0043] Step 6, drying the surface of the circuit board in step 5;

[0044] Step seven, packaging the circuit board completed in step six to obtain a finished product.

[0045] It can be understood that the above-mentioned glass-based display circuit board surface treatment process, by performing wind shear treatment on the surface of the circuit board after the nickel-gold treatment, the water stains on the surface of the circuit board are blown off, reducing the pollution of the solvent in step one to the subsequent cleaning process, facilitating the improvement of the cleanliness, reducing the frequency of solvent replacement, and reducing the cost of solvent. At the same time, when the wind shear treatment blows the water stains off the surface of the circuit board, the water droplets roll on the surface of the circuit board and constantly contact with the air, and the evaporation of the water stains is more convenient, thereby improving the cleanliness. The scrubbing treatment and the liquid medicine treatment further strengthen the cleaning of the impurities on the surface of the circuit board. The combination of wind shear treatment and drying treatment can greatly shorten the drying market, improve the drying efficiency, reduce the drying energy consumption, and thus reduce the industrial cost. The surface of the circuit board can be efficiently cleaned with a simple process operation, avoiding the problem of short service life of the glass-based display circuit board due to incomplete cleaning, and causing the circuit board to have poor solder resistance and low wire bonding performance, thereby solving the technical problem of insufficient cleaning in the existing glass-based display circuit board surface treatment process. It should be noted that the present invention does not impose any limitation on the number of wind shear treatments. Specifically, in this embodiment, the number of wind shear treatments is five. The wind shear treatment is represented by wind shear treatment IV. In practical applications, the number of wind shear treatments is set according to actual cleaning requirements.

[0046] The surface treatment process of the glass-based display circuit board includes conveying the circuit board along a predetermined path, and setting a wind shear device to perform wind shear treatment on the circuit board surface after each solvent cleaning on the predetermined path. It can be understood that the circuit board surface is subjected to wind shear treatment after each solvent cleaning, which improves the cleanliness of the circuit board surface and avoids the previous cleaning solvent from contaminating the next cleaning solvent, ensuring the integrity of each cleaning process and making each cleaning process more thorough. At the same time, the wind shear treatment uses vertical wind shear to blow off the water on the surface of the circuit board. Vertical wind shear makes the wind shear treatment efficient and low in energy consumption.

[0047] See also Figure 2 , the surface treatment process of the glass-based display circuit board also includes treating the surface of the circuit board with nickel-gold and performing wind shear treatment I, and then heating and soaking the surface of the circuit board. It can be understood that the heating and soaking treatment will soften the impurities attached to the surface of the circuit board that are difficult to wash and blow off, thereby making it easier to clean and treat the impurities. Preferably, the heating temperature during the heating and soaking treatment is 40°C to 60°C. Specifically. In this embodiment, the heating temperature during the heating and soaking treatment is 45°C to 55°C.

[0048] See also Figure 3, the surface treatment process of the glass-based display circuit board includes at least three brushing treatments, one of which is to perform a detergent brushing treatment on the surface of the circuit board after the circuit board surface is heated and immersed and subjected to wind shear treatment II; one of which is to perform a pure water brushing treatment I on the surface of the circuit board after the circuit board surface is subjected to a detergent brushing treatment and the circuit board surface is subjected to wind shear treatment III; one of which is to perform a pure water brushing treatment II on the surface of the circuit board after the circuit board surface is subjected to pure water brushing treatment I and the circuit board surface is subjected to wind shear treatment IV. It can be understood that the detergent brushing will wash away the stubborn impurities and / or water stains remaining on the surface of the circuit board, and multiple brushing treatments will repeatedly wash away the impurities and / or water stains on the surface of the circuit board, ensuring that the circuit board surface is fully and thoroughly brushed. It should be noted that this scheme does not impose any restrictions on the number of brushing treatments. In actual applications, it needs to be set according to different cleaning needs.

[0049] See also Figure 4 After brushing the surface of the circuit board, the surface is treated with chemicals. The chemical treatment includes:

[0050] Perform two-fluid cleaning on the surface of the circuit board;

[0051] The surface of the circuit board after the two-fluid cleaning treatment is subjected to QDR cleaning treatment.

[0052] It can be understood that the two-fluid cleaning treatment dissolves and removes the dust on the surface of the circuit board that is difficult to clean by brushing, and the DQR cleaning treatment thoroughly cleans the residual medicine from the two-fluid cleaning treatment to make the surface of the circuit board clean. The coordination of the two-fluid cleaning treatment and the DQR cleaning treatment ensures that the cleaning of the surface of the circuit board is sufficient and thorough.

[0053] In the surface treatment process of glass-based display circuit boards, a treatment tank is used to treat the surface of the circuit board with nickel and gold and liquid. The surface treatment process of glass-based display circuit boards also includes filtering the tank liquid. It can be understood that the filtering process ensures that each solvent is independent and complete. Fully utilizing the solvent to achieve the cleaning effect that the solvent can bring is the ideal state of the solvent in the process flow. The filtering process avoids the presence of other impurities in the solvent that affect the solvent from reaching the ideal state.

[0054] The surface treatment process of the glass-based display circuit board also includes exhausting the processing environment of the circuit board during the entire process of the surface treatment of the glass-based display circuit board. It can be understood that the exhaust treatment extracts the air in the processing environment of the circuit board to ensure the cleanliness of the air in the processing environment of the circuit board and avoid the presence of mutually reactive gases and / or harmful gases in the air.

[0055] The surface treatment process of the glass-based display circuit board also includes temperature control treatment of the bath liquid in the entire glass-based display circuit board surface treatment process. Specifically, in this embodiment, a cooling pipe is used to perform temperature control treatment on the bath liquid to achieve a cooling effect. It should be noted that this solution does not impose any restrictions on the method of temperature control treatment.

[0056] The surface treatment process of the glass-based display circuit board also includes loading and unloading the circuit board through an automatic loading and scanning device and an automatic unloading device after the surface of the circuit board is treated with nickel and gold. It can be understood that the automatic loading and unloading process makes the entire process more efficient, while avoiding the harm to the human body caused by chemicals attached to the surface of the circuit board due to manual operation.

[0057] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various forms of implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A surface treatment process for a glass-based display circuit board, characterized in that: The surface treatment process of the glass-based display circuit board specifically includes the following steps: Step 1: pre-process the circuit board; Step 2, performing nickel-gold treatment on the surface of the circuit board completed in step 1; Step 3, performing wind shearing treatment on the surface of the circuit board completed in step 2; Step 4, scrubbing the surface of the circuit board in step 3; Step 5, treating the surface of the circuit board in step 4 with a liquid medicine; Step 6, drying the surface of the circuit board in step 5; Step seven, packaging the circuit board completed in step six to obtain a finished product.

2. The surface treatment process of a glass-based display circuit board according to claim 1, characterized in that: The surface treatment process of the glass-based display circuit board includes conveying the circuit board along a predetermined path, and arranging a wind cutting device to perform wind cutting treatment on the surface of the circuit board after each solvent cleaning of the circuit board surface on the predetermined path.

3. The surface treatment process of a glass-based display circuit board according to claim 2, characterized in that: The wind shear treatment uses vertical wind shear to blow water off the surface of the circuit board.

4. The surface treatment process of a glass-based display circuit board according to claim 2, characterized in that: The surface treatment process of the glass-based display circuit board also includes performing a nickel-gold treatment on the surface of the circuit board and a wind shear treatment I, and then performing a heating and immersion treatment on the surface of the circuit board.

5. The surface treatment process of a glass-based display circuit board according to claim 4, characterized in that: The heating temperature during the heating and soaking treatment is 40°C to 60°C.

6. The surface treatment process of a glass-based display circuit board according to claim 4, characterized in that: The surface treatment process of the glass-based display circuit board includes at least three brushing treatments, one of which is a detergent brushing treatment on the surface of the circuit board after the circuit board surface is subjected to a heating immersion treatment and a wind shear treatment II; one of which is a pure water brushing treatment I on the surface of the circuit board after the circuit board surface is subjected to a detergent brushing treatment and a wind shear treatment III; and one of which is a pure water brushing treatment II on the surface of the circuit board after the circuit board surface is subjected to a pure water brushing treatment I and a wind shear treatment IV.

7. The surface treatment process of the glass-based display circuit board according to claim 1, characterized in that: The liquid medicine treatment comprises: Perform two-fluid cleaning on the surface of the circuit board; The surface of the circuit board after the two-fluid cleaning treatment is subjected to QDR cleaning treatment.

8. The surface treatment process of a glass-based display circuit board according to claim 1, characterized in that: In the surface treatment process of the glass-based display circuit board, a treatment tank is used to perform nickel-gold treatment and liquid treatment on the surface of the circuit board. The surface treatment process of the glass-based display circuit board also includes filtering the tank liquid.

9. The surface treatment process of a glass-based display circuit board according to claim 1, characterized in that: The surface treatment process of the glass-based display circuit board also includes exhausting the processing environment of the circuit board during the entire process flow.

10. The surface treatment process of a glass-based display circuit board according to claim 1, characterized in that: The surface treatment process of the glass-based display circuit board also includes loading and unloading the circuit board through an automatic loading and scanning device and an automatic unloading device after the surface of the circuit board is subjected to nickel-gold treatment.

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