A middle frame manufacturing method and device of a display module and a 3D printing equipment

Abstract

The embodiment of the present specification relates to the technical field of middle frame manufacturing, specifically to a middle frame manufacturing method, device and 3D printing equipment of a display module. A middle frame manufacturing method of a display module adopts a 3D printing equipment to manufacture the middle frame, and specifically includes the following steps: obtaining a first printing path of the middle frame, printing a first middle frame body of the display module according to the first printing path; obtaining a second printing path of the middle frame based on the first printing path, printing a second middle frame body of the display module according to the second printing path; obtaining a third printing path of the middle frame based on the second printing path, and printing a third middle frame body of the display module according to the third printing path. The embodiment of the present specification adopts a 3D printing equipment to manufacture the middle frame, so that the manufactured middle frame can be closely fitted with the display module, and the display module will not be squeezed to deform during the middle frame manufacturing process.

Description

Technical Field

[0001] This specification relates to the field of mid-frame manufacturing technology, specifically a method, apparatus, and 3D printing equipment for manufacturing the mid-frame of a display module. Background Technology

[0002] Display modules, as devices that provide image display functions, are widely used in various display devices. A display module includes components such as a glass cover, display panel, and flexible circuit board. It is relatively fragile and easily damaged by external impacts; therefore, a mid-frame is needed to protect the display module.

[0003] There are two main existing methods for creating mid-frames:

[0004] The first method involves injection molding the mid-frame using a mold, and then snapping the mid-frame onto the display module. The actual dimensions of the mid-frame produced in this way may deviate from the dimensions of the display module, preventing a tight fit and resulting in poor waterproofing, dustproofing, and support protection. Furthermore, different sizes of display modules require different mid-frame molds, increasing the manufacturing cost of the mid-frame.

[0005] The second method involves first setting the mold on the display module, and then directly injection molding the mid-frame onto the display module using the mold. In this method, the mold may exert pressure on the display module, causing deformation and damage. Furthermore, different sizes of display modules require different mid-frame molds, resulting in higher manufacturing costs. Summary of the Invention

[0006] The purpose of the embodiments in this specification is to address the shortcomings of the prior art by providing a method, apparatus, and 3D printing equipment for manufacturing the middle frame of a display module. The middle frame is manufactured by printing a first middle frame, a second middle frame, and a third middle frame using a 3D printing equipment, so that the manufactured middle frame can fit tightly with the display module and will not compress the display module during the middle frame manufacturing process, thus preventing deformation of the display module.

[0007] The technical solutions provided in the embodiments of this specification are as follows:

[0008] In a first aspect, a method for manufacturing the mid-frame of a display module is provided, wherein the mid-frame is manufactured using a 3D printing device, and the method specifically includes the following steps:

[0009] Obtain the first printing path of the middle frame, and print the first middle frame of the display module according to the first printing path;

[0010] Based on the first printing path, obtain the second printing path of the middle frame, and print the second middle frame of the display module according to the second printing path;

[0011] Based on the second printing path, obtain the third printing path of the middle frame, and print the third middle frame of the display module according to the third printing path;

[0012] The first middle frame, the second middle frame, and the third middle frame are solidified to form the middle frame.

[0013] Preferably, the first printing path is arranged around but not attached to the periphery of the main body of the display module; the printing start point of the first printing path coincides with the printing end point of the first printing path; the horizontal distance of the first printing path from the side of the substrate is S1, and the height of the first printing path from the top of the substrate is H1.

[0014] The printing needle of the 3D printing device travels along the first printing path at a first moving speed to print the first middle frame, and there is a first gap between the first middle frame and the main body.

[0015] Preferably, the second printing path is located above the first printing path; the starting point of the second printing path is separate from the ending point of the second printing path; the height of the second printing path from the top of the first middle frame is H2;

[0016] The printing needle of the 3D printing device travels along the second printing path at a second moving speed to print the second middle frame.

[0017] Preferably, the third printing path is located above the main body of the display module, and the third printing path is parallel to the second printing path; the printing start point of the third printing path is separate from the printing end point of the third printing path; the horizontal distance between the third printing path and the second printing path is S2.

[0018] The printing needle of the 3D printing device travels along the third printing path at a third moving speed to print the third middle frame, and the third middle frame fills the first gap.

[0019] Preferably, the method for manufacturing the middle frame further includes the following steps:

[0020] Based on the third printing path, obtain the fourth printing path of the middle frame, and print the fourth middle frame of the display module according to the fourth printing path.

[0021] Preferably, the fourth printing path is located between the third printing path and the second printing path, and the fourth printing path is parallel to the third printing path; the printing start point of the fourth printing path is separate from the printing end point of the fourth printing path; the horizontal distance between the fourth printing path and the third printing path is S3, and S3 is half of S2.

[0022] The printing needle of the 3D printing device travels along the fourth printing path at a fourth moving speed to print the fourth middle frame.

[0023] Preferably, the method for manufacturing the middle frame further includes the following steps:

[0024] Based on the fourth printing path, a smoothing path is obtained, and the tops of the second, third, and fourth middle frames are smoothed according to the smoothing path.

[0025] Preferably, the smoothing path is the same as the fourth printing path;

[0026] The 3D printing device's flattening needle travels along the flattening path at a fifth moving speed to flatten the tops of the second, third, and fourth middle frames.

[0027] Preferably, the method for manufacturing the middle frame further includes the following steps:

[0028] The second, third, and fourth middle frames are morphologically scanned to obtain the leveling path.

[0029] Preferably, the method for manufacturing the middle frame further includes the following steps:

[0030] Scan compensation is performed on the substrate.

[0031] In a second aspect, an apparatus for manufacturing a mid-frame of a display module is provided, comprising:

[0032] The first print path acquisition module is used to acquire the first print path of the middle frame;

[0033] The first frame printing module is used to print the first frame of the display module according to the first printing path;

[0034] The second print path acquisition module is used to acquire the second print path of the middle frame based on the first print path.

[0035] The second frame printing module is used to print the second frame of the display module according to the second printing path;

[0036] The third print path acquisition module is used to acquire the third print path of the middle frame based on the second print path;

[0037] The third frame printing module is used to print the third frame of the display module according to the third printing path;

[0038] The fourth print path acquisition module is used to acquire the fourth print path of the middle frame based on the third print path;

[0039] The fourth frame printing module is used to print the fourth frame of the display module according to the fourth printing path;

[0040] The scraping path acquisition module is used to acquire the scraping path based on the fourth printing path;

[0041] The leveling module is used to level the tops of the second, third, and fourth middle frames according to the leveling path.

[0042] In a third aspect, a 3D printing device is provided to manufacture the mid-frame of a display module using the mid-frame manufacturing method of the first aspect.

[0043] The method, apparatus, and 3D printing equipment for manufacturing the middle frame in the embodiments of this specification use a 3D printing equipment to print a first middle frame, a second middle frame, and a third middle frame to manufacture the middle frame, so that the manufactured middle frame can fit tightly with the display module, and the display module will not be squeezed or deformed during the middle frame manufacturing process.

[0044] Further or more detailed beneficial effects will be described in conjunction with specific embodiments in the detailed implementation details.

[0045] illustrate. Attached Figure Description

[0046] Figure 1 This is a flowchart illustrating the method for manufacturing the middle frame of the display module in Embodiment 1 of this specification;

[0047] Figure 2 This is a top view of the first frame and display module in Embodiment 1 of this specification;

[0048] Figure 3 This is a cross-sectional view of the first frame and display module in Embodiment 1 of this specification in the front view direction;

[0049] Figure 4 This is a schematic diagram of the first frame and display module in Embodiment 1 of this specification from a three-dimensional perspective;

[0050] Figure 5 for Figure 3 Add a sectional view of the second frame;

[0051] Figure 6 for Figure 4Add a structural diagram of the second frame;

[0052] Figure 7 for Figure 5 Add a sectional view of the third frame;

[0053] Figure 8 This is a cross-sectional view of the first, second, third, and fourth middle frames and the display module in the front view direction in Embodiment 2 of this specification;

[0054] Figure 9 This is a flowchart illustrating the method for manufacturing the middle frame of the display module in Embodiment 2 of this specification;

[0055] Figure 10 This is a flowchart illustrating the method for manufacturing the middle frame of the display module in Embodiment 3 of this specification;

[0056] Figure 11 This is a schematic diagram of the structure of the display module mid-frame manufacturing device in Embodiment 4 of this specification. Detailed Implementation

[0057] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1:

[0059] A method for manufacturing the mid-frame of a display module, such as Figure 1 As shown, the middle frame is made using 3D printing equipment. The specific steps for making the middle frame include:

[0060] L1. Obtain the first printing path of the middle frame, and print the first middle frame 101 of the display module according to the first printing path.

[0061] like Figure 3 As shown, the display module includes a substrate 201 and a main body 202 disposed on the substrate 201. In this embodiment, before step L1, the display module needs to be placed on the vacuum adsorption platform of the 3D printing equipment, and then the vacuum adsorption function is activated to firmly adsorb the substrate 201 onto the vacuum adsorption platform, so as to facilitate the subsequent printing of the middle frame of the display module.

[0062] The 3D printing equipment can acquire the position of the display module on the vacuum adsorption platform and the external shape and dimensions of the display module through a vision system. For example, in this embodiment, the substrate 201 of the display module can be rectangular, and the four right angles of the substrate 201 are rounded. The main body 202 is located in the middle of the substrate 201, and the main body 202 is also rectangular. Assuming that in this embodiment, the horizontal distance (i.e., S) from the side of the substrate 201 to the side of the main body 202 can be 1000 micrometers, and the height (i.e., H) of the main body 202 can be 1500 micrometers.

[0063] The first printing path can be determined by the external shape and dimensions of the display module. Specifically, the first printing path is arranged around but not attached to the periphery of the main body 202 of the display module. The first printing path is located above the substrate 201 of the display module, and while it surrounds the periphery of the main body 202, there is a certain distance between the first printing path and the periphery of the main body 202; it is not attached to the periphery of the main body 202. The printing start point and the printing end point of the first printing path coincide, making the first printing path a closed arrangement, thereby allowing the printed first frame 101 to encircle the main body 202. The printing start point of the first printing path can be any point on the first printing path.

[0064] The horizontal distance S1 from the side of the first printing path to the substrate 201 is the same as the height H1 from the top of the substrate 201. The value of S1 for the first printing path is fixed, ensuring a fixed distance between the printed first frame 10 and the side of the substrate 201, thus improving the aesthetics of the frame. Alternatively, the value of S1 can be the horizontal distance from the side of the substrate 201 to the side of the main body 202 (i.e., S) minus 100 micrometers, then divided by 2. In this embodiment, when S is 1000 micrometers, the value of S1 for the first printing path is 450 micrometers. In this embodiment, the value of H1 can be twice S1; when S1 is 450 micrometers, H1 is 900 micrometers.

[0065] The 3D printing equipment has a printing needle. The 3D printing equipment can drive the printing needle to move along a first printing path (the bottom of the printing needle is located on the first printing path). When the printing needle moves, the printing material used to form the middle frame can flow out from the bottom of the printing needle to form the first middle frame 101.

[0066] The 3D printing equipment is pre-equipped with multiple printing needles of different inner diameters. Before printing the first intermediate frame 10, only a printing needle with a suitable inner diameter needs to be selected. For example, in this embodiment, a printing needle with an inner diameter of 900 micrometers can be selected. Since the printing material can collapse on both sides of the width direction of the first intermediate frame 101, on the one hand, the first intermediate frame 101 can be tightly connected to the side of the substrate 201; on the other hand, the actual width of the first intermediate frame 101 is greater than 900 micrometers. Furthermore, in this embodiment, the printing needle moves along the first printing path at a first moving speed. At this first moving speed, the height of the printed first intermediate frame 101 is slightly lower than the bottom of the printing needle, preventing the printing needle from squeezing the first intermediate frame 101 and ensuring that the width of the first intermediate frame 101 is greater than its height, thereby improving the structural stability of the first intermediate frame 101. In this embodiment, the first moving speed can specifically be 10 millimeters per second.

[0067] After the first printing path, printing needle, and first moving speed are determined, the printing needle of the 3D printing equipment moves along the first printing path at the first moving speed to print the first intermediate frame 101. The first intermediate frame 101 is specifically as follows... Figures 2 to 4 As shown, after the first intermediate frame 101 is printed, there is a first gap between the first intermediate frame 101 and the main body 202. The setting of the first gap allows the first intermediate frame 101 to be connected more tightly to the main body 202 later.

[0068] L2. Obtain the second printing path for the middle frame based on the first printing path, and print the second middle frame 102 of the display module according to the second printing path. After the first middle frame 101 is printed, the second middle frame 102 of the display module also needs to be printed. Before printing the second middle frame 102, the second printing path needs to be determined first.

[0069] The second print path is positioned above the first print path, and the second print path may be parallel to the first print path in the height direction. The start point and end point of the second print path are separate, such as... Figure 6 As shown, the second printing path is not closed; one side of the second printing path corresponding to the main body 202 is empty, and this side is used for the main body 202 to connect with other components. The printing start point of the second printing path corresponds to the first end of the empty side of the main body 202, and the printing end point of the second printing path corresponds to the second end of the empty side of the main body 202.

[0070] The height of the second printing path from the top of the first frame 101 is H2. In this embodiment, the value of H2 can be the same as the value of H1. When H1 is 900 micrometers, H2 can also be 900 micrometers.

[0071] The printing needle in the second printing path can be the same as the printing needle in the first printing path, that is, a printing needle with a diameter of 900 micrometers can be used directly. The second moving speed can be the same as the first moving speed, so that the height of the second middle frame 102 is slightly lower than the bottom of the printing needle, and ultimately the width of the printed second middle frame 102 is greater than the height of the second middle frame 102.

[0072] After the second printing path, printing needle, and second moving speed are determined, the printing needle moves upward by a height H2, and then moves to the starting point of the second printing path. The printing needle of the 3D printing equipment travels along the starting point of the second printing path to the ending point of the second printing path at the second moving speed to complete the printing of the second inner frame 102. The second inner frame 102 is specifically as follows... Figure 5 and Figure 6As shown. Because the printing material can collapse on both sides of the second frame 102 in the width direction, the second frame 102 can cover and fuse the sides of the first frame 101 into one, thereby enabling the second frame 102 and the first frame 101 to be tightly connected.

[0073] Before proceeding to step L3, it is necessary to determine whether the sum of H1 and H2 is greater than the height of the main body 202 (i.e., H). In this embodiment, since the sum of H1 and H2 is 1800 micrometers, which is greater than the height of the main body 202 (1500 micrometers), it can directly proceed to step L3.

[0074] In another embodiment, if the sum of H1 and H2 is less than or equal to the height of the main body 202, then step L2 is repeated, that is, the printing needle is moved upward by the height of H2 again, and then a second frame 102 is printed. Next, it is determined whether the sum of H1 and the two H2s is greater than the height of the main body 202. If it is, then step L3 is performed; if it is still not greater than the height of the main body 202, then step L2 continues until the latest second frame 102 is higher than the main body 202, and then step L3 is performed. In most cases, the sum of H1 and H2 will directly exceed the height of the main body 202, that is, after performing step L2 once, step L3 is performed directly.

[0075] L3. Obtain the third printing path for the middle frame based on the second printing path, and print the third middle frame 103 of the display module according to the third printing path. After the second middle frame 102 is printed, the third middle frame 103 of the display module also needs to be printed. Before printing the third middle frame 103, the third printing path needs to be determined first.

[0076] The third printing path is located above the main body 202 of the display module, and is parallel to the second printing path in the horizontal direction. The starting point and ending point of the third printing path are separate, and the third printing path is not closed, so as to facilitate the connection of the main body 202 with other components. The starting point of the third printing path corresponds to the first end of the empty side of the main body 202 (which may correspond to the starting point of the second printing path), and the ending point of the third printing path corresponds to the second end of the empty side of the main body 202 (which may correspond to the ending point of the second printing path).

[0077] The horizontal distance between the third printing path and the second printing path is S2. Specifically, S2 can be twice S1 plus 100 micrometers. When S1 is 450 micrometers, S2 is 1000 micrometers.

[0078] The printing needle for the third printing path can be the same as that for the second printing path, i.e., a printing needle with a diameter of 900 micrometers can be used directly. The third moving speed needs to be greater than the second moving speed, so that the height of the third middle frame 103 is slightly lower than the bottom of the printing needle.

[0079] After the third printing path, printing needle, and third moving speed are determined, the printing needle is moved horizontally a distance S2, and then moved to the starting point of the third printing path. The printing needle of the 3D printing equipment travels from the starting point to the ending point of the third printing path at the third moving speed to complete the printing of the third middle frame 103. During the printing of the third middle frame 103, the printing material collapses on both sides of the width of the third middle frame 103, filling the first gap. At this time, the third middle frame 103 tightly connects the main body 202, the second middle frame 102, and the first middle frame 101. The third middle frame 103 is specifically as follows... Figure 7 As shown.

[0080] L4. Solidify the first middle frame 101, the second middle frame 102, and the third middle frame 103 to form the middle frame.

[0081] After the specific structure of the middle frame (i.e., the first middle frame 101, the second middle frame 102, and the third middle frame 103) is formed, the middle frame is solidified to obtain the final middle frame.

[0082] This embodiment uses 3D printing equipment to make the middle frame, which can fit tightly with the display module. The middle frame will not squeeze the display module during the middle frame making process, thus preventing the display module from deforming. In addition, when the size of the display module changes, only the printing needle of the corresponding size needs to be replaced. There is no need to prepare a mold corresponding to the size of the display module, thus making the middle frame making cost lower.

[0083] Furthermore, this embodiment may also include the following steps before step L1:

[0084] L0. Perform scan compensation on substrate 201.

[0085] After the display module is placed on the vacuum adsorption platform of the 3D printing equipment, the substrate 201 may also become uneven due to the unevenness of the vacuum adsorption platform itself. For example, if a certain point on the vacuum adsorption platform protrudes upwards by 20 micrometers, then the corresponding point on the substrate 201 will also protrude upwards by 20 micrometers. If this point on the substrate 201 happens to be on the printing path, then the height of the printed mid-frame at that point will be 20 micrometers lower.

[0086] Therefore, before printing, the substrate 201 needs to be scanned. If the substrate 201 is x micrometers too low at a certain position, then the position is compensated by -x micrometers; if the substrate 201 is y micrometers too high at a certain position, then the position is compensated by y micrometers. The scanning compensation can be directly implemented using existing technology.

[0087] In this way, when the printing needle moves to a certain position and that position is 10 micrometers too low, the printing needle will adaptively adjust down by 10 micrometers; when the printing needle moves to a certain position and that position is 15 micrometers too high, the printing needle will adaptively adjust up by 15 micrometers. This ensures that the height of the printed middle frame is consistent, preventing some positions from being too low and others from being too low, thus resulting in a better printing effect for the middle frame.

[0088] Example 2:

[0089] A method for manufacturing the mid-frame of a display module, such as Figure 9 As shown, the difference from Embodiment 1 is that the following steps are included before step L4:

[0090] L5. Obtain the fourth printing path for the middle frame based on the third printing path, and print the fourth middle frame 104 of the display module according to the fourth printing path. After the third middle frame 103 is printed, the fourth middle frame 104 of the display module also needs to be printed. Before printing the fourth middle frame 104, the fourth printing path needs to be determined first.

[0091] The fourth printing path is located between the third and second printing paths, and can be arranged parallel to the third printing path in the horizontal direction. The starting and ending points of the fourth printing path are separate, and the fourth printing path is not closed, allowing the main body 202 to connect with other components. The starting point of the fourth printing path can correspond to the starting point of the third printing path, and the ending point of the fourth printing path can correspond to the ending point of the third printing path.

[0092] The horizontal distance between the fourth printing path and the third printing path is S3, which is half of S2. Since S2 is 1000 micrometers in Example 1, S3 is 500 micrometers in this example. The printing needle of the fourth printing path needs to be smaller than the printing needle of the third printing path; specifically, the inner diameter of the fourth printing needle can be 100 micrometers. The fourth moving speed needs to be greater than the third moving speed, so that the height of the fourth frame 104 is slightly lower than the bottom of the printing needle.

[0093] After the fourth printing path, printing needle, and fourth moving speed are determined, the printing needle is moved horizontally a distance S3, and then moved to the starting point of the fourth printing path. The printing needle of the 3D printing equipment travels from the starting point to the ending point of the fourth printing path at the fourth moving speed to complete the printing of the fourth frame 104. The fourth frame 104 is specifically as follows... Figure 8 As shown, the fourth middle frame 104 is disposed in the gap between the third middle frame 103 and the second middle frame 102. The fourth middle frame 104 connects the third middle frame 103 and the second middle frame 102, thus avoiding the connection structure between the third middle frame 103 and the second middle frame 102 being too weak.

[0094] Then, step L4 is replaced with step L6, which specifically involves solidifying the first middle frame 101, the second middle frame 102, the third middle frame 103, and the fourth middle frame 104 to form the middle frame. After the specific structure of the middle frame (i.e., the first middle frame 101, the second middle frame 102, the third middle frame 103, and the fourth middle frame 104) is formed, the middle frame is solidified to obtain the final middle frame.

[0095] The difference from Embodiment 1 is that a fourth middle frame 104 is provided between the third middle frame 103 and the second middle frame 102 in this embodiment. The fourth middle frame 104 enhances the connection between the third middle frame 103 and the second middle frame 102, making the final printed middle frame structure more stable and robust.

[0096] Example 3: A method for manufacturing the middle frame of a display module, such as... Figure 10 As shown, the difference from Embodiment 2 is that the following steps are included before step L6:

[0097] L7. Obtain the leveling path based on the fourth printing path, and level the tops of the second middle frame 102, the third middle frame 103, and the fourth middle frame 104 according to the leveling path. After the fourth middle frame 104 is printed, the top of the middle frame also needs to be leveled, and the leveling path needs to be determined before leveling.

[0098] The leveling path is the same as the fourth printing path, with the same starting point and ending point. However, the leveling needle differs from the printing needle used to print the fourth frame 104; specifically, the inner diameter of the leveling needle can be 2000 micrometers. The fifth moving speed is not specifically limited; for example, it could be 18 millimeters per second.

[0099] After the leveling path, leveling needle, and fifth moving speed are determined, the leveling needle is moved to the starting point of the leveling path. The leveling needle of the 3D printing equipment travels along the leveling path from the starting point to the ending point at the fifth moving speed to level the top of the second middle frame 102, the third middle frame 103, and the fourth middle frame 104.

[0100] The difference from Embodiment 2 is that this embodiment also uses a flattening needle to flatten the top of the second middle frame 102, the third middle frame 103, and the fourth middle frame 104, thereby making the final middle frame flatter and more aesthetically pleasing.

[0101] Furthermore, the method for manufacturing the middle frame in this embodiment also includes the following steps:

[0102] The second frame 102, the third frame 103, and the fourth frame 104 are scanned to obtain the smoothing path. In this embodiment, the smoothing path does not necessarily have to be exactly the same as the fourth printing path. After obtaining the shapes of the second frame 102, the third frame 103, and the fourth frame 104, adjustments can be made upside down and left and right based on the fourth printing path to obtain a better smoothing path and thus a better final smoothing effect.

[0103] Example 4:

[0104] A device for manufacturing the mid-frame of a display module, such as Figure 11 As shown, it includes: a first print path acquisition module, a first middle frame printing module, a second print path acquisition module, a second middle frame printing module, a third print path acquisition module, a third middle frame printing module, a fourth print path acquisition module, a fourth middle frame printing module, a leveling path acquisition module, and a leveling module.

[0105] The first print path acquisition module is used to acquire the first print path of the middle frame. The first middle frame printing module is used to print the first middle frame 101 of the display module according to the first print path. The second print path acquisition module is used to acquire the second print path of the middle frame based on the first print path. The second middle frame printing module is used to print the second middle frame 102 of the display module according to the second print path. The third print path acquisition module is used to acquire the third print path of the middle frame based on the second print path. The third middle frame printing module is used to print the third middle frame 103 of the display module according to the third print path. The fourth print path acquisition module is used to acquire the fourth print path of the middle frame based on the third print path. The fourth middle frame printing module is used to print the fourth middle frame 104 of the display module according to the fourth print path. The leveling path acquisition module is used to acquire the leveling path based on the fourth print path. The leveling module is used to level the tops of the second middle frame 102, the third middle frame 103, and the fourth middle frame 104 according to the leveling path.

[0106] The first printing path acquisition module specifically includes the vision system of the 3D printing equipment (mainly used to acquire the external shape and size of the display module) and a computer connected to the 3D printing equipment (mainly used to calculate the first printing path based on the external shape and size of the display module).

[0107] The specific composition of the second print path acquisition module, the third print path acquisition module, the fourth print path acquisition module, and the scraping path acquisition module is the same as that of the first print path acquisition module.

[0108] The first frame printing module specifically includes a 3D printing device needle, a needle driving mechanism (for driving the needle to move according to the first printing path), and a material storage device (for storing printing material).

[0109] The specific composition of the second, third, and fourth frame printing modules and the leveling module is the same as that of the first frame printing module.

[0110] The mid-frame manufacturing device in this embodiment uses 3D printing equipment to manufacture the mid-frame, which allows the manufactured mid-frame to fit tightly with the display module. Furthermore, the mid-frame manufacturing process does not compress the display module, thus preventing deformation. In addition, when the size of the display module changes, only the corresponding printing needle needs to be replaced, eliminating the need to prepare a mold corresponding to the size of the display module. Therefore, the cost of manufacturing the mid-frame is lower. Moreover, the manufactured mid-frame has a stable and sturdy structure, good flatness, and high aesthetic appeal.

[0111] Example 5: A 3D printing device can manufacture the mid-frame of a display module using the mid-frame manufacturing method described in Example 3. This allows the manufactured mid-frame to fit tightly against the display module, and the display module will not be compressed or deformed during the mid-frame manufacturing process. Furthermore, when the size of the display module changes, only the corresponding sized printing needle needs to be replaced, eliminating the need to prepare a mold corresponding to the size of the display module. This reduces the cost of manufacturing the mid-frame. Moreover, the manufactured mid-frame has a stable and robust structure, good flatness, and high aesthetic appeal.

[0112] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. A method for manufacturing the middle frame of a display module, characterized in that, The middle frame is manufactured using 3D printing equipment, and the manufacturing method of the middle frame specifically includes the following steps: Obtain the first printing path of the middle frame, and print the first middle frame (101) of the display module according to the first printing path; the first printing path is arranged around but not attached to the periphery of the main body (202) of the display module; there is a first gap between the first middle frame (101) and the main body (202); A second printing path for the middle frame is obtained based on the first printing path, and a second middle frame (102) is printed on the display module according to the second printing path; the second printing path is located above the first printing path; Based on the second printing path, a third printing path for the middle frame is obtained, and a third middle frame (103) is printed on the display module according to the third printing path; the third printing path is located above the main body (202) of the display module; the third middle frame (103) fills the first gap; The first middle frame (101), the second middle frame (102), and the third middle frame (103) are solidified to form the middle frame.

2. The method for manufacturing the middle frame according to claim 1, characterized in that, The starting point of the first printing path coincides with the ending point of the first printing path; the horizontal distance of the first printing path from the side of the substrate (201) is S1, and the height of the first printing path from the top of the substrate (201) is H1; The printing needle of the 3D printing device travels along the first printing path at a first moving speed to print the first middle frame (101).

3. The method for manufacturing the middle frame according to claim 2, characterized in that, The starting point of the second printing path is separated from the ending point of the second printing path; the height of the second printing path from the top of the first middle frame (101) is H2; The printing needle of the 3D printing device travels along the second printing path at a second moving speed to print the second middle frame (102).

4. The method for manufacturing the middle frame according to claim 3, characterized in that, The third printing path is set parallel to the second printing path; the starting point of the third printing path is separate from the ending point of the third printing path; the horizontal distance between the third printing path and the second printing path is S2; The printing needle of the 3D printing device travels along the third printing path at a third moving speed to print the third middle frame (103).

5. The method for manufacturing the middle frame according to claim 4, characterized in that, The method for manufacturing the middle frame also includes the following steps: Based on the third printing path, obtain the fourth printing path of the middle frame, and print the fourth middle frame (104) of the display module according to the fourth printing path.

6. The method for manufacturing the middle frame according to claim 5, characterized in that, The fourth printing path is located between the third printing path and the second printing path, and the fourth printing path is parallel to the third printing path; the printing start point of the fourth printing path is separate from the printing end point of the fourth printing path; the horizontal distance between the fourth printing path and the third printing path is S3, and S3 is half of S2; The printing needle of the 3D printing device travels along the fourth printing path at a fourth moving speed to print the fourth middle frame (104).

7. The method for manufacturing a middle frame according to claim 6, characterized in that, The method for manufacturing the middle frame also includes the following steps: Based on the fourth printing path, a smoothing path is obtained, and the tops of the second middle frame (102), the third middle frame (103), and the fourth middle frame (104) are smoothed according to the smoothing path.

8. The method for manufacturing the middle frame according to claim 7, characterized in that, The scraping path is the same as the fourth printing path; The 3D printing device's flattening needle travels along the flattening path at a fifth moving speed to flatten the tops of the second middle frame (102), the third middle frame (103), and the fourth middle frame (104).

9. The method for manufacturing a middle frame according to claim 7, characterized in that, The method for manufacturing the middle frame also includes the following steps: The second middle frame (102), the third middle frame (103), and the fourth middle frame (104) are morphologically scanned to obtain the leveling path.

10. The method for manufacturing a middle frame according to claim 2, characterized in that, The method for manufacturing the middle frame also includes the following steps: Scan compensation is performed on the substrate (201).

11. A device for manufacturing the middle frame of a display module, characterized in that, include: The first print path acquisition module is used to acquire the first print path of the middle frame; The first printing path is arranged around but not attached to the periphery of the main body (202) of the display module; there is a first gap between the first middle frame (101) and the main body (202); The first frame printing module is used to print the first frame (101) of the display module according to the first printing path. The second print path acquisition module is used to acquire a second print path for the middle frame based on the first print path; the second print path is located above the first print path; The second frame printing module is used to print the second frame (102) of the display module according to the second printing path. The third printing path acquisition module is used to acquire the third printing path of the middle frame based on the second printing path; the third printing path is located above the main body (202) of the display module; the third middle frame (103) fills the first gap; The third frame printing module is used to print the third frame (103) of the display module according to the third printing path. The fourth print path acquisition module is used to acquire the fourth print path of the middle frame based on the third print path; The fourth frame printing module is used to print the fourth frame (104) of the display module according to the fourth printing path. The scraping path acquisition module is used to acquire the scraping path based on the fourth printing path; The leveling module is used to level the tops of the second middle frame (102), the third middle frame (103), and the fourth middle frame (104) according to the leveling path.

12. A mid-frame of a display module, characterized in that, The mid-frame of the display module is manufactured using the mid-frame manufacturing method described in any one of claims 1 to 10.

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