Manufacturing method of temperature sensing computer keyboard touchpad glass

Abstract

The invention relates to the related technical field of touchpads, in particular to a manufacturing method of temperature-sensing computer keyboard touchpad glass, which comprises the following steps: step 1, carrying out earlier-stage preparation treatment on a glass substrate, including CNC (Computer Numerical Control) processing, cleaning and quality inspection, toughening treatment, ultrasonic cleaning, drying and quality inspection, BM (Black Matrix) ink silk-screen printing, baking, cleaning and quality inspection; step 2, adjusting the temperature-sensitive ink silk-screen printing process of the glass substrate, including a first printing stage, a second printing stage and a third printing stage, performing image acquisition through a CCD alignment mechanism in each stage, and analyzing the offset condition of each stage to determine the placement position of the silk-screen template in the next printing stage, or adjusting the temperature-sensitive ink silk-screen printing process of the glass substrate in the next printing stage; offsetting alarm is carried out; 3, AF liquid medicine coating treatment, cleaning, quality inspection and packaging warehousing are conducted on the glass substrate, through accurate alignment, the production efficiency is improved, the stability and consistency of printing quality are ensured, and high practicability is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to touch panels, and in particular to a method for manufacturing temperature-sensitive computer keyboard touch panel glass. Background Art

[0002] The traditional touch panel manufacturing process usually includes CNC (Computer Numeric Control) processing, cleaning quality inspection, tempering treatment, cooling, ultrasonic cleaning, rinsing, drying quality inspection and other steps, followed by screen printing and baking. However, the traditional method has certain deficiencies in position accuracy control during the printing process, which can easily cause the printed pattern to shift, affecting product quality and yield rate.

[0003] Chinese patent announcement number: CN102501657B discloses a screen printing alignment method, which is to paste a transparent film on the packaging substrate, first print the printed liquid ink on the transparent film through the screen, and observe whether the position of the liquid ink on the transparent film is aligned with the printed pattern or printed circuit on the packaging substrate. If there is no alignment, a new transparent film is re-pasted and the position of the screen is adjusted until the alignment is confirmed to be successful, and then screen printing is performed on the packaging substrate. In practical applications, this method still has the problems of cumbersome printing process and inability to accurately align the screen template. Summary of the invention

[0004] To this end, the present invention provides a method for manufacturing a temperature-sensitive computer keyboard touch panel glass, so as to overcome the problems in the prior art that the screen template printing process is complicated and cannot be accurately aligned.

[0005] A method for manufacturing a temperature-sensitive computer keyboard touch panel glass that can evenly coat temperature-sensitive color-changing ink comprises the following steps:

[0006] Step 1: Preparing the glass substrate, including CNC processing, cleaning and quality inspection, tempering and cooling, ultrasonic cleaning, rinsing to remove the cleaning agent and drying for quality inspection, and finally screen printing BM (Black Matrix) ink on the glass substrate, baking, cleaning and quality inspection;

[0007] Step 2: Adjust the temperature-sensitive ink screen printing process on the glass substrate that has undergone preliminary preparation, which is divided into three stages: the first printing stage, the second printing stage and the third printing stage. In each stage, the placement position of the next screen template is re-determined based on the analysis results by collecting the printed image and comparing the position;

[0008] Step three, performing AF (Anti-Fingerpr int, anti-fingerprint) liquid coating treatment and cleaning on the glass substrate to form a touch panel glass product, and then performing a final quality inspection on the finished product and packaging and storage.

[0009] Furthermore, in the first printing stage, the placement position of the first screen template is determined according to a preset first standard point.

[0010] Furthermore, after the first printing stage is completed, the first actual point position is obtained by performing image acquisition and analysis on the first pattern, and a position comparison analysis is performed between the first actual point position and the preset first standard point position to determine the placement position of the silk screen template in the second printing stage, wherein the first actual point position is the center point position of the first pattern, the preset first standard point is a reference point set in the first printing stage for determining the placement position of the first silk screen template, and the first pattern is a pattern captured by a CCD (Charge-Coup led Device) alignment mechanism after the first printing is completed.

[0011] Furthermore, in the second printing stage, if the placement position of the screen template needs to be adjusted, the second standard point is determined according to the relationship between the first standard point position and the first actual point position, and the placement position of the second screen template is determined by the second standard point.

[0012] Furthermore, in the second printing stage, when the placement position of the second silk screen template is determined according to the relationship between the first standard point position and the first actual point position, the regulated lateral offset distance and longitudinal offset distance are smaller than the offset distance in the relationship between the first standard point position and the first actual point, and a lateral offset distance ratio parameter and a longitudinal offset distance ratio parameter are set in the offset process, the offset distance is the offset distance between the actual point and the standard point, the actual point is the center point of the pattern actually formed after printing is completed, and the standard point is a reference point for determining the placement position of the silk screen template.

[0013] Furthermore, in the third printing stage, the third standard point is determined by analyzing the target point and the relationship between the actual point and the standard point in the first printing stage and the second printing stage, and the placement position of the third screen template is determined by the third standard point.

[0014] The standard point is a reference point for determining the placement position of the silk screen template, and the actual point is the center point of the pattern actually formed after printing is completed.

[0015] Further, the target point is determined by analyzing the first actual point position and the second actual point position.

[0016] Furthermore, different screen printing templates are selected in the three printing stages respectively.

[0017] Furthermore, different temperature-sensitive color-changing inks are selected in the three printing stages respectively.

[0018] Furthermore, in the three printing stages, images of the patterns produced by printing are collected, actual dot positions and standard dot positions are obtained, and the obtained data are compared and analyzed, and an alarm is issued for those that do not meet the deviation error range.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the first printing stage, the position of the glass substrate is accurately identified by activating the CCD alignment mechanism, and the initial standard point position is determined, thereby determining the placement position of the first screen template. The implementation of this innovative technical solution effectively avoids the position deviation caused by manual positioning in the traditional printing process, greatly improves the printing accuracy, and thus achieves significant improvements in productivity and product quality.

[0021] Furthermore, by collecting and analyzing the image of the first pattern, the first actual point position is obtained, and the position is compared and analyzed with the preset first standard point position. The setting of this technical step makes the printing process more refined and accurate. By obtaining the horizontal offset distance, the vertical offset distance, and the linear offset distance, the placement position of the second screen template in the second printing stage is further guided, ensuring the stability and consistency of the printing quality.

[0022] Furthermore, the present invention introduces the concepts of lateral offset distance, longitudinal offset distance and linear offset distance and analyzes them, thereby further optimizing the template placement and ensuring the accuracy and aesthetics of the printed pattern. At the same time, when the offset exceeds the preset range, the system can issue an alarm in time, thereby avoiding the generation of waste products due to inaccurate printing positions and saving production costs.

[0023] In the second printing stage, the horizontal offset distance, vertical offset distance and linear offset distance in the first printing stage are analyzed to accurately adjust the screen template placement in the second printing stage, ensuring the printing quality and greatly improving the printing accuracy and efficiency. This technical means based on the actual offset distance adjustment effectively controls the position error in the printing process, thereby significantly improving the printing quality, and is especially suitable for occasions with extremely high requirements for printing quality.

[0024] Furthermore, by adopting the method of determining the placement position of the second screen template of the present invention, assuming that 90% of the actual offset distance is selected as the adjustment value, the position error is effectively reduced and the stability of printing is improved. After the second printing is completed, the accuracy of the placement position of the third screen template in the third printing stage is ensured by comparing and analyzing the center point position of the second pattern with the second standard point position.

[0025] In the third printing stage, the third standard point is determined by analyzing the data of the first two printing stages, and the CCD alignment mechanism is used for precise position recognition, which can accurately determine the standard point of the third printing, greatly improving the position accuracy during the printing process and effectively avoiding printing quality problems caused by position deviation. The placement position of the third screen template is determined according to the position of the third standard point. This process ensures the integrity and consistency of the pattern and avoids pattern dislocation or loss caused by position deviation.

[0026] Furthermore, after the third printing stage is completed, the pattern generated by printing is imaged and analyzed to obtain the center point position of the third pattern T3, and the position is compared and analyzed with the third target point position. This step not only verifies the accuracy of the printing position, but also provides feedback for the subsequent printing process for further adjustment and optimization.

[0027] Furthermore, through the precise measurement and adjustment of the position offset during the three printing processes, the precise alignment of the temperature-sensitive color-changing ink pattern is achieved, which effectively eliminates the position deviation during the printing process, ensures the accuracy and consistency of the pattern, and thus significantly improves the quality and appearance of the product.

[0028] Furthermore, the present invention selects different screen printing templates and temperature-sensitive color-changing inks in the three printing stages, which not only improves the printing efficiency, but also makes the printing effect more diverse, meeting the needs of different users for touch panel glass.

[0029] Furthermore, the present invention reduces the need for manual intervention and improves production efficiency by introducing automated equipment and precise measurement technology. At the same time, through real-time monitoring and offset alarm systems, the printing position is adjusted in time, the scrap rate is reduced, and production efficiency is further improved.

[0030] Furthermore, the present invention introduces the concepts of lateral offset distance, longitudinal offset distance and linear offset distance and analyzes them, thereby further optimizing the template placement and ensuring the accuracy and aesthetics of the printed pattern. At the same time, when the offset exceeds the preset range, the system can issue an alarm in time, thereby avoiding the generation of waste products due to inaccurate printing positions and saving production costs.

[0031] Furthermore, after the third printing is completed, the present invention collects and analyzes the image of the pattern produced by the printing, obtains the center point position of the third pattern, and compares and analyzes the position with the third standard point position. This step not only verifies the accuracy of the printing position, but also provides feedback for the subsequent printing process for further adjustment and optimization.

[0032] Furthermore, the present invention selects different screen printing templates and temperature-sensitive color-changing inks in the three printing stages, which not only improves the aesthetics of the product and makes the printing effect more diverse, but also gives the product a temperature sensing function, so that users can obtain different visual feedback according to the temperature changes of the touchpad when using the computer keyboard, meeting the needs of different users for touchpad glass and enhancing the interactivity and user experience of the product.

[0033] Furthermore, the present invention achieves precise alignment of the temperature-sensitive color-changing ink pattern by accurately measuring and adjusting the position offset during the three printing processes, effectively eliminating the position deviation during the printing process, ensuring the accuracy and consistency of the pattern, and thus significantly improving the quality and appearance of the product.

[0034] Furthermore, the present invention reduces the need for manual intervention by introducing automated equipment and precise measurement technology. At the same time, through real-time monitoring and offset alarm systems, the printing position is adjusted in time, the scrap rate is reduced, and production efficiency is further improved.

[0035] Furthermore, by optimizing the process flow and improving production efficiency, the present invention reduces production costs while ensuring product quality. Precise printing technology reduces material waste, and automated equipment reduces labor costs, which improves the economic efficiency of production as a whole.

[0036] In summary, the present invention greatly improves the product quality in the production process of temperature-sensitive computer keyboard touch panel glass through a printing positioning method with different technical concepts, represents a new development trend of screen printing technology, and provides new ideas for technological innovation and development in this field. The present invention shows significant beneficial effects in terms of functionality, production accuracy, quality control, safety, environmental adaptability, cost savings, and technological development trends, and has high practical value and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a process flow chart of an embodiment of a method for manufacturing a temperature-sensitive computer keyboard touch panel glass according to the present invention;

[0038] Figure 2 A flow chart for determining the placement position of the second screen template in an embodiment of the present invention;

[0039] Figure 3 A flowchart for confirming the relationship between actual points and standard points in an embodiment of the present invention;

[0040] Figure 4 It is a structural schematic diagram of a screen printing machine tool in an embodiment of the present invention;

[0041] Figure 5 A top view of a printing workbench and a glass substrate in an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the first printing stage in an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the second printing stage in an embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of the third printing stage in an embodiment of the present invention;

[0045] Fig. 9 Schematic diagram of rectangular coordinate system points in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0048] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or relationships are based on the directions or relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0049] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] See also Figure 1-Figure 9 As shown, Figure 1 This is a process flow chart of an embodiment of a method for manufacturing a temperature-sensitive computer keyboard touch panel glass according to the present invention; Figure 2 A flow chart for determining the placement position of the second screen template in an embodiment of the present invention; Figure 3 A flowchart for confirming the relationship between actual points and standard points in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a screen printing machine tool in an embodiment of the present invention; Figure 5 A top view of a printing workbench and a glass substrate in an embodiment of the present invention; Figure 6 This is a schematic diagram of the first printing stage in an embodiment of the present invention; Figure 7 This is a schematic diagram of the second printing stage in an embodiment of the present invention; Figure 8 This is a schematic diagram of the third printing stage in an embodiment of the present invention; Fig. 9 Schematic diagram of rectangular coordinate system points in an embodiment of the present invention.

[0051] The present invention provides a method for manufacturing a temperature-sensitive computer keyboard touch panel glass, comprising the following steps:

[0052] Step 1: Preparing the glass substrate L, including CNC processing, cleaning and quality inspection, tempering and cooling, ultrasonic cleaning, rinsing to remove the cleaning agent and drying for quality inspection, and finally screen printing BM ink on the glass substrate L, baking, cleaning and quality inspection;

[0053] Step 2: Screen printing temperature-sensitive ink on the glass substrate L that has undergone preliminary preparation;

[0054] Step three, the glass substrate is treated with AF liquid coating, cleaned, quality inspected and packaged for storage.

[0055] Step 2 specifically includes the following three stages:

[0056] In the first printing stage, the glass substrate L is transferred to the printing workbench 2 through the feeding area 1, and the glass substrate L is fixed on the printing workbench 2. The CCD alignment mechanism 3 is started to identify the position of the glass substrate L, and the initial standard point position and the preset first standard point position on the glass substrate L are obtained. The placement position of the first screen template is determined by the first standard point position, and the temperature-sensitive color-changing ink A is applied on the first screen template with a circular pattern of 5 mm in diameter. The printing host 5 descends to make the screen contact with the glass substrate L, and pressure is applied by the scraper 4 to transfer the ink through the first screen to the substrate to form a circular pattern T1 with a diameter of 5 mm. The glass substrate L on the workbench 2 is removed, and it is baked, cleaned and quality inspected.

[0057] After the first printing is completed, the CCD alignment mechanism 3 collects and analyzes the image of the first pattern generated by the first screen template printing, obtains the center point position of the first pattern, and sets it as the first actual point position, and compares and analyzes the first actual point position with the preset first standard point position to determine the placement position of the second screen template in the second printing stage, or, to issue an offset alarm. The comparison and analysis content includes:

[0058] Obtaining a lateral offset distance ΔX1 between a first actual point position S1 and a preset first standard point position M1;

[0059] Obtaining a longitudinal offset distance ΔY1 between a first actual point position S1 and a preset first standard point position M1;

[0060] A straight line offset distance ΔP1 between the first actual point position S1 and the preset first standard point position M1 is obtained.

[0061] In this embodiment, the glass substrate L is set to 160 mm×100 mm, the initial standard point of the glass substrate L is M0, the initial standard point M0 is the lower left corner vertex of the glass substrate L, the first standard point M1 is the geometric center point of the glass substrate L, and the first actual point position S1 is the geometric center point of the first pattern. Under ideal circumstances, the first standard point M1 coincides with the first actual point position S1.

[0062] Corresponding offset error ranges are set for the lateral offset distance ΔX1, the longitudinal offset distance ΔY1, and the linear offset distance ΔP1. If any of the lateral offset distance ΔX1, the longitudinal offset distance ΔY1, and the linear offset distance ΔP1 exceeds the corresponding error range, an alarm is issued; if all the lateral offset distances ΔX1, the longitudinal offset distances ΔY1, and the linear offset distances ΔP1 are within the corresponding error range, the placement position of the second screen template is determined.

[0063] The determination includes adjustment and non-adjustment. ΔP1 is compared with a preset range. If ΔP1 is within the preset range, it is determined that no adjustment is made. If ΔP1 is not within the preset range, it is determined that adjustment is made.

[0064] In the first printing stage, the position of the glass substrate L is accurately identified by starting the CCD alignment mechanism 3, and the initial standard point position is determined, thereby determining the placement position of the first screen template. The implementation of this innovative technical solution effectively avoids the position deviation caused by manual positioning in the traditional printing process, greatly improves the printing accuracy, and thus achieves significant improvements in productivity and product quality.

[0065] After the first printing is completed, the CCD alignment mechanism 3 collects and analyzes the image of the first pattern, obtains the first actual point position, and compares and analyzes it with the preset first standard point position. The setting of this technical step makes the printing process more refined and accurate. By obtaining the lateral offset distance ΔX1, the longitudinal offset distance ΔY1, and the linear offset distance ΔP1, the placement position of the second screen template in the second printing stage is further guided, ensuring the stability and consistency of the printing quality.

[0066] In addition, the present invention also sets an offset error range and issues an alarm for values ​​that do not meet the error range, effectively preventing the expansion of printing errors, further ensuring printing quality, simplifying the printing process, and improving production efficiency.

[0067] In the case where it is determined that the placement position of the second screen template needs to be adjusted, the value of the second standard point M2 is determined by the relationship between the first standard point M1 and the first actual point position S1, and the placement position of the second screen template is determined by the value of the second standard point M2.

[0068] As an embodiment, assuming that in a plane rectangular coordinate system, M0 is set to (0,0), the first standard point M1 is set to (80,50), and the first actual point S1 is set to (72,45), then ΔX1 is set to -8, ΔY1 is set to -5; the horizontal offset distance ratio parameter and the vertical offset distance ratio parameter of the second actual point are both set to 0.9, and 90% of the actual offset distance is selected as the adjustment value when determining the placement position of the second silk screen template. Then, during the second printing, the second standard point M2 is set to (79.2,49.5).

[0069] In the second printing stage, if the placement position of the second screen template needs to be adjusted, the placement position of the second screen template is determined by the second standard point M2, the CCD alignment mechanism 3 is started to identify the position of the glass substrate L, and the third screen template is placed according to the value of the second standard point M2. The temperature-sensitive color-changing ink B is coated on the second screen template with a circular pattern of 10 mm in diameter. The printing host 5 descends to make the screen contact with the glass substrate L. Pressure is applied by the scraper 4 to transfer the ink through the screen to the substrate to form a circular pattern T2 with a diameter of 10 mm. The glass substrate L on the workbench 2 is removed for baking, cleaning and quality inspection.

[0070] In the second printing stage, the second standard point is determined by setting the horizontal offset distance ratio parameter and the vertical offset distance ratio parameter of the second actual point, and the second printing is carried out. After the second printing is completed, the third standard point is determined by analyzing the target point and the relationship between the actual point and the standard point in the first two printing stages.

[0071] After the second printing is completed, there are two situations. In the first situation, the offset between the second actual point and the second standard point is equal to the offset between the first actual point and the first standard point; in the second situation, the offset between the second actual point and the second standard point is not equal to the offset between the first actual point and the first standard point.

[0072] For the first case, when the offset between the second actual point and the second standard point is equal to the offset between the first actual point and the first standard point, the standard point in the third printing stage can be directly determined according to the third target point. As an example, the first standard point M1 = (80, 50), the first actual point S1 = (72, 45), ΔX1 = -8, ΔY1 = -5, 90% of the actual offset distance is selected as the adjustment value, the second standard point M2 = (79.2, 49.5) is used to collect and analyze the second pattern produced by the second screen printing, obtain the center point position of the second pattern, and set it as the second actual point position S2. Assuming that the second actual point position S2 = (71.2, 44.5), then ΔX2 = -8, ΔY2 = -5, and compare and analyze the two offsets. At this time, the two offsets are equal, and it is determined that the offset between the actual point and the standard point is affected by a single factor, and the offset between the actual point and the standard point is a fixed value. When the third printing target point is set to be between the first actual point and the second actual point, the third target point is (71.6, 44.75), and the third standard point M3 = (79.6, 49.75).

[0073] For the second case, the offset between the second actual point and the second standard point is not equal to the offset between the first actual point and the first standard point. There is a case where the X value and Y value of the actual point position are in the same proportional relationship with the X value and Y value of the standard point position. As an example, the first standard point M1=(80,50), the first actual point S1=(72,45), ΔX1=-8, ΔY1=-5, at this time, S1x=0.9×M1x, S1y=0.9×M1y, 90% of the actual offset distance is selected as the adjustment value, the second standard point M2=(79.2,49.5), the second pattern generated by the second screen template printing is imaged and analyzed, the center point position of the second pattern is obtained, and its Set as the second actual dot position S2, assuming that the second actual dot position S2 = (71.28, 44.55), then ΔX2 = -7.92, ΔY2 = -4.95, compare and analyze the two offsets, at this time, the two offsets are not equal, but at this time S2x = 0.9 × M2x, S2y = 0.9 × M2y, determine that the X value and Y value of the actual dot position at this time are in the same proportional relationship with the X value and Y value of the standard dot position, set the third printing target point to be between the first actual point and the second actual point, the third target point is S3 (71.64, 44.775), S3x = 0.9 × M3x, S3y = 0.9 × M3y, and the third standard point M3 is (79.6, 49.75).

[0074] For the second case, the offset between the second actual point and the second standard point is not equal to the offset between the first actual point and the first standard point. There is also a case where the X value and Y value of the actual point position are not proportional to the X value and Y value of the standard point position. As an example, the first standard point M1=(80,50), the first actual point S1=(72,40), ΔX1=-8, ΔY1=-10, S1x=0.9×M1x, S1y=0.8×M1y, 90% of the actual offset distance is selected as the adjustment value, the second standard point M2=(79.2,48), the second pattern generated by the second screen template printing is imaged and analyzed to obtain the center point of the second pattern Position, and set it as the second actual point position S2, assuming that the second actual point position S2 = (71.28, 38.4), then ΔX2 = -7.92, ΔY2 = -9.6, compare and analyze the two offsets, at this time, the two offsets are not equal, but at this time S2x = 0.9 × M2x, S2y = 0.8 × M2y, determine that the X value and Y value of the actual point and the standard point at this time are in different proportional relationships, set the third printing target point to be between the first actual point and the second actual point, the third target point is S3 (71.64, 39.2), S3x = 0.9 × M3x, S3y = 0.8 × M3y, then the third standard point M3 is (79.6, 49).

[0075] In the second printing stage, two possible situations that may occur during the printing process are considered, namely, the situation where the offset between the second actual point and the second standard point is equal or unequal. By analyzing the horizontal offset distance, the vertical offset distance and the linear offset distance in the first printing stage, the screen template placement position is accurately adjusted in the second printing stage, ensuring the printing quality and greatly improving the printing accuracy and efficiency. This technical means based on the actual offset distance adjustment effectively controls the position error in the printing process, thereby significantly improving the printing quality, and is especially suitable for occasions with extremely high requirements for printing quality.

[0076] After the second printing is completed, the third standard point can be determined by comparing and analyzing the relationship between the actual points and the standard points of the first two times, thereby achieving more accurate positioning. This technology not only improves printing accuracy, but also facilitates subsequent baking, cleaning and quality inspection.

[0077] Secondly, the present invention further optimizes the template placement by introducing the concepts of lateral offset distance, longitudinal offset distance and linear offset distance and analyzing them, thereby ensuring the accuracy and aesthetics of the printed pattern. At the same time, when the offset exceeds the preset range, the system can issue an alarm in time, thereby avoiding the generation of waste products due to inaccurate printing position and saving production costs.

[0078] The method for determining the placement position of the second screen template of the present invention is adopted. When the placement position of the second screen template is determined according to the relationship between the first standard point position M1 and the first actual point position S1, the regulated lateral offset distance and the longitudinal offset distance are smaller than the offset distance in the relationship between the first standard point position M1 and the first actual point position S1, and a lateral offset distance ratio parameter and a longitudinal offset distance ratio parameter are set in the offset process. Because in the actual screen printing process, there are many possible reasons for the offset, for example, the screen template is not accurately positioned when placed, or there is a problem in the proportional determination of the distance in the control program. By setting the offset distance ratio parameter and making the actual offset distance smaller than the distance between the standard point and the actual point during the first printing, the cause of the offset can be analyzed, laying the foundation for subsequent fine processing. For the setting of the offset parameter, between 0 and 1, when 1 is selected as the offset parameter, the second actual point will overlap with the first actual point, and the cause of the offset and the offset relationship cannot be determined. When a smaller offset parameter is selected, the offset is large and the cause of the offset and the offset relationship cannot be accurately determined, so 0.9 is selected as the offset parameter for example. The position error is effectively reduced and the printing stability is improved. After the second printing is completed, the position of the center point of the second pattern is compared and analyzed with the position of the second standard point to ensure the accuracy of the placement of the third screen template in the third printing stage.

[0079] In the third printing stage, if the placement position of the third screen template needs to be adjusted, the placement position of the third screen template is determined according to the third standard point determined by the analysis in the second printing stage, the CCD alignment mechanism 3 is started to identify the position of the glass substrate L, and the third screen template is placed according to the value of the third standard point M3, and the temperature-sensitive color-changing ink C is coated on the third screen template with a circular pattern of 15 mm in diameter. The printing host 5 descends to make the screen contact with the glass substrate L, and pressure is applied by the scraper 4 to transfer the ink through the screen to the substrate to form a circular pattern T3 with a diameter of 15 mm. The glass substrate L on the workbench 2 is removed and baked, cleaned and quality inspected.

[0080] After the third printing is completed, the third pattern T3 generated by the third screen template printing is imaged and analyzed, the center point position of the third pattern T3 is obtained, and it is set as the third actual point position, the third actual point position is compared and analyzed with the third standard point position, and the lateral offset distance ΔX3, the longitudinal offset distance ΔY3 and the straight line offset distance ΔP3 in the third printing stage are analyzed.

[0081] In the three printing stages, after each printing is completed, the CCD alignment mechanism 3 collects and analyzes the image of the actual printed pattern to obtain the actual point position, which is the center point position of the pattern. The offset between the actual point and the standard point and the error range are compared and analyzed. If any value does not meet the offset error range, an alarm is issued. If it meets the offset error range, the printing stage ends.

[0082] By comparing and analyzing the actual offset with the error range after each printing is completed, this step not only verifies the accuracy of the printing position, but also provides feedback for the subsequent printing process for further adjustment and optimization. It can also monitor and analyze the lateral offset distance, longitudinal offset distance and linear offset distance in real time, and promptly detect and alarm situations that do not meet the offset error range, thereby reducing printing errors and improving product quality.

[0083] Step three, perform AF liquid coating treatment and cleaning on the glass substrate L to form a touch panel glass product, and perform final quality inspection on the finished product and package it for storage.

[0084] The present invention effectively reduces the consumption of raw materials and production costs by optimizing the printing process, and at the same time reduces the discharge of three wastes, meeting the requirements of green production.

[0085] Specifically, the present invention achieves precise alignment of the temperature-sensitive color-changing ink pattern through precise measurement and adjustment of position offset during the three printing processes, effectively eliminates position deviation during the printing process, ensures the accuracy and consistency of the pattern, and thus significantly improves the quality and appearance of the product.

[0086] Specifically, the present invention reduces the need for manual intervention by introducing automated equipment and precise measurement technology. At the same time, through real-time monitoring and offset alarm systems, the printing position is adjusted in time, the scrap rate is reduced, and production efficiency is further improved.

[0087] Specifically, the present invention reduces production costs while ensuring product quality by optimizing the process flow and improving production efficiency. Precise printing technology reduces material waste, and automated equipment reduces labor costs, which improves the economic efficiency of production as a whole.

[0088] In the screen printing stage of temperature-sensitive ink, as an example, temperature-sensitive color-changing inks A, B, and C change color at different temperatures to provide temperature prompts:

[0089] When ink A is greater than or equal to 40°C, it turns blue, indicating that the temperature is rising;

[0090] When ink B is greater than or equal to 50°C, it turns purple, warning that the temperature is too high;

[0091] When ink C is greater than or equal to 60℃, it turns red, indicating severe overheating and the machine needs to be stopped immediately for inspection.

[0092] These inks are colorless at normal temperatures, do not affect the appearance of the touchpad, and provide an intuitive visual warning when they change color.

[0093] Specifically, the present invention selects different screen printing templates and temperature-sensitive color-changing inks in the three printing stages, which not only improves the aesthetics of the product and makes the printing effects more diverse, but also gives the product a temperature sensing function, so that users can obtain different visual feedback according to the temperature changes of the touch pad when using the computer keyboard, meeting the needs of different users for touch pad glass and enhancing the interactivity and user experience of the product.

[0094] In summary, the present invention greatly improves the product quality in the production process of temperature-sensitive computer keyboard touch panel glass through a printing positioning method with different technical concepts, represents a new development trend of screen printing technology, and provides new ideas for technological innovation and development in this field. It shows significant beneficial effects in terms of functionality, production accuracy, quality control, safety, environmental adaptability, cost savings, and technological development trends, and has high practical value and market prospects.

[0095] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a temperature-sensitive computer keyboard touch panel glass, characterized in that: The following steps are included: Step 1: Preparing the glass substrate, including CNC processing, cleaning and quality inspection, tempering and cooling, ultrasonic cleaning, rinsing to remove the cleaning agent and drying for quality inspection, and finally screen printing BM ink on the glass substrate, baking, cleaning and quality inspection; Step 2: Adjust the temperature-sensitive ink screen printing process on the glass substrate after the previous preparation process, which is divided into three stages: the first printing stage, the second printing stage and the third printing stage. In each stage, the placement position of the next screen template is re-determined based on the analysis results by collecting the printed image and comparing the position; Step three, perform AF liquid coating treatment and cleaning on the glass substrate to form a finished touch panel glass product, and perform final quality inspection on the finished product and package it for storage.

2. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 1, characterized in that: In the first printing stage, the placement position of the first screen template is determined according to a preset first standard point, and the preset first standard point is a reference point set in the first printing stage for determining the placement position of the first screen template.

3. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 2, characterized in that: After the first printing stage is completed, the first actual point position is obtained by performing image acquisition and analysis on the first pattern, and a position comparison analysis is performed between the first actual point position and the preset first standard point position to determine the placement position of the silk screen template in the second printing stage, wherein the first actual point position is the center point position of the first pattern, and the first pattern is the pattern acquired by the CCD alignment mechanism after the first printing is completed.

4. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 3, characterized in that: In the second printing stage, if the placement position of the screen template needs to be adjusted, the second standard point is determined according to the relationship between the first standard point position and the first actual point position, and the placement position of the second screen template is determined by the second standard point.

5. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 4, characterized in that: In the second printing stage, when the placement position of the second screen template is determined according to the relationship between the first standard point position and the first actual point position, the regulated lateral offset distance and the longitudinal offset distance are smaller than the offset distance in the relationship between the first standard point position and the first actual point, and a lateral offset distance ratio parameter and a longitudinal offset distance ratio parameter are set during the offset process, and the offset distance is the offset distance between the actual point and the standard point.

6. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 5, characterized in that: In the third printing stage, the third standard point is determined by analyzing the target point and the relationship between the actual point and the standard point in the first printing stage and the second printing stage, and the placement position of the third silk screen template is determined by the third standard point. The standard point is a reference point for determining the placement position of the silk screen template, and the actual point is the center point of the pattern actually formed after printing is completed.

7. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 6, characterized in that: The target point is determined by analyzing the first actual point position and the second actual point position.

8. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 1, characterized in that: In the three printing stages, different screen printing templates are selected respectively.

9. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 1, characterized in that: In the three printing stages, different temperature-sensitive color-changing inks are selected respectively.

10. The method for manufacturing the temperature-sensitive computer keyboard touch panel glass according to claim 1, characterized in that: In the three printing stages, the image of the pattern produced by printing is collected, the actual dot position and the standard dot position are obtained, and the obtained data are compared and analyzed, and an alarm is issued for those that do not meet the deviation error range.

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