Middle frame structure, mobile device, screen assembling method and screen assembling platform

Abstract

The invention relates to a middle frame structure, mobile equipment, a screen assembling method and a screen assembling platform. The middle frame structure comprises an interface arranged on the inner side of the middle frame structure, a dispensing transverse surface and an assembling vertical surface. The interface is connected between the dispensing transverse surface and the assembling vertical surface, and the interface is obliquely arranged. According to the arrangement, when lamplight irradiates the middle frame structure, the directions of reflected light rays of the adhesive dispensing transverse plane and the interface are different, so that the brightness degrees of the interface and the adhesive dispensing transverse plane are different, the boundary of the interface and the adhesive dispensing transverse plane is clear, the position of an assembly surface can be distinguished through the interface which shows darker, the edge grabbing precision of the CCD group screen equipment is improved, and the production efficiency is improved. And therefore, the screen assembly yield is improved, the problems of reworking, scrapping and the like are reduced, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic device manufacturing, and in particular, to a middle frame structure, a mobile device, a screen assembling method and a screen assembling platform. BACKGROUND

[0002] In the whole machine manufacturing of electronic products, the CCD (Charged Coupled Device, an image sensor technology) screen assembling process refers to assembling a screen to a middle frame structure by using a CCD screen assembling device. The process requires high assembling precision, and an important link for determining the assembling precision is to find the edge features of the corresponding edge of the middle frame structure by using the visual system of the CCD screen assembling device.

[0003] The edge finding of screen assembling is to find the required edge finding features by using the gray scale contrast of the imaging image. However, for the middle frame structure made of metal material, the glue dispensing surface is a metal surface, and the connection between the assembling surface and the glue dispensing surface near the glue dispensing surface after lighting appears as a piece of white in the imaging image, and the edge features of the assembling surface cannot be distinguished, which is easy to cause the problem of edge finding error, and further cause the problems of screen assembling failure, rework and scrap. SUMMARY

[0004] The present disclosure provides a middle frame structure, a mobile device, a screen assembling method and a screen assembling platform to solve the problems in the related art.

[0005] According to a first aspect of the embodiments of the present disclosure, a middle frame structure is provided, which comprises a demarcation surface, a glue dispensing horizontal surface and an assembling vertical surface arranged inside the middle frame structure; the demarcation surface is connected between the glue dispensing horizontal surface and the assembling vertical surface, and the demarcation surface is arranged obliquely.

[0006] Optionally, a first included angle is formed between the demarcation surface and the glue dispensing horizontal surface, a second included angle is formed between the demarcation surface and the assembling vertical surface, and the first included angle and the second included angle are both not less than 124 degrees and not more than 146 degrees.

[0007] Optionally, the transverse projection width of the demarcation surface on the plane where the glue dispensing horizontal surface is located is not less than 0.12 mm and not more than 0.18 mm.

[0008] Optionally, the middle frame structure further comprises a rounded corner and a reflecting horizontal surface; the reflecting horizontal surface is arranged on the upper side of the middle frame structure; and the rounded corner connects the reflecting horizontal surface and the assembling vertical surface.

[0009] Optionally, the middle frame structure comprises a plurality of side frames connected in series, and each side frame is respectively provided with the demarcation surface, the glue dispensing horizontal surface and the assembling vertical surface.

[0010] The interface and the assembly vertical surface are set to be of equal length in the length direction of their respective borders.

[0011] According to a second aspect of the present disclosure, a mobile device is provided, including a screen and a mid-frame structure as described above, wherein the screen is assembled to the mid-frame structure.

[0012] According to a third aspect of the present disclosure, a screen assembly method is provided, comprising the following steps:

[0013] Emit strip light and ring light towards the mid-frame structure as described above, wherein the emission direction of the ring light is parallel to the assembly vertical surface;

[0014] Obtain the projected grayscale image of the middle frame structure, and determine the assembly edge based on the brightness difference of the projected grayscale image;

[0015] The screen is assembled according to the assembly edges.

[0016] Optionally, the emitted strip light and ring light include:

[0017] Adjust the emission direction of the strip light until the strip light obliquely illuminates the assembly vertical surface.

[0018] Optionally, the emission direction of the strip light forms a 30-degree angle with the vertical assembly surface.

[0019] Optionally, the middle frame structure includes rounded corners and an upper reflective surface;

[0020] The emitted strip light and ring light include:

[0021] Adjust the light source positions of the strip light and the ring light so that the strip light and the ring light at least cover the interface, the dispensing surface, the rounded corners, and the reflective surface.

[0022] According to a fourth aspect of the present disclosure, a screen assembly platform is provided for implementing the screen assembly method as described above. The screen assembly platform includes a camera component, a light source component, a placement platform, and a robotic arm. The placement platform is used to support a mid-frame structure. The camera component and the light source component are located above the mid-frame structure, and the optical axis of the camera component is perpendicular to the dispensing surface. The camera component is used to acquire a projected grayscale image of the mid-frame structure. The robotic arm is used to assemble the screen onto the mid-frame structure based on the brightness differences of the projected grayscale image.

[0023] As can be seen from the above embodiments, the frame structure of this disclosure, by setting a sub-interface and setting the sub-interface at an angle, results in different directions of light reflection between the adhesive surface and the sub-interface when light shines on the frame structure. This causes the sub-interface and the adhesive surface to have different degrees of brightness, thus making the sub-interface and the adhesive surface clearly separated. The position of the assembly surface can be distinguished by the darker sub-interface, which improves the accuracy of edge grasping of CCD screen assembly equipment, thereby improving the screen assembly yield, reducing the occurrence of rework, scrap and other problems, and thus reducing manufacturing costs.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0026] Figure 1 This is a schematic diagram illustrating a mid-frame structure according to an exemplary embodiment.

[0027] Figure 2 This is a partial schematic diagram of a mid-frame structure according to an exemplary embodiment.

[0028] Figure 3 This is a schematic diagram illustrating a frame structure illuminated by a light source according to an exemplary embodiment.

[0029] Figure 4 This is a schematic diagram illustrating a frame structure illuminated by a light source according to another exemplary embodiment.

[0030] Figure 5 This is a flowchart illustrating a screen assembly method according to an exemplary embodiment.

[0031] Figure 6 This is another flowchart illustrating a screen assembly method according to an exemplary embodiment. Detailed Implementation

[0032] The technical solutions in the embodiments (or "implementations") of this disclosure will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] If this disclosure uses terms relating to directional indications or positional relationships (e.g., up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, terms such as "first" and "second" in this disclosure are used only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0034] like Figure 1 and Figure 2 As shown, the frame structure of this disclosure includes a partition 1, a dispensing horizontal surface 2, an assembly vertical surface 3, rounded corners 4, and a reflective horizontal surface 5. The partition 1, the dispensing horizontal surface 2, and the assembly vertical surface 3 are located on the inner side of the frame structure. The partition 1 connects the dispensing horizontal surface 2 and the assembly vertical surface 3, and the partition 1 is inclined. Specifically, the dispensing horizontal surface 2 is perpendicular to the assembly vertical surface 3, and the partition 1 is inclined relative to the dispensing horizontal surface 2 and the assembly vertical surface 3.

[0035] With this setup, when light shines on the mid-frame structure, the directions of light reflected from the adhesive-coated horizontal surface 2 and the interface 1 are different, resulting in different levels of brightness between the interface 1 and the adhesive-coated horizontal surface 2. This makes the boundary between the interface 1 and the adhesive-coated horizontal surface 2 clearer, improving the edge-grabbing accuracy of the CCD screen assembly equipment, thereby increasing the screen assembly yield, reducing the occurrence of rework and scrap, and ultimately reducing manufacturing costs.

[0036] like Figure 3 As shown, when light shines perpendicularly to the dispensing surface 2 in a direction opposite to the emission direction, the dispensing surface 2 will reflect the light in a direction opposite to the emission direction, resulting in higher brightness on the dispensing surface 2. Meanwhile, the interface 1 will reflect the light at a certain angle to the emission direction, resulting in lower brightness on the interface 1. Therefore, when acquiring images of the mid-frame structure, edge features are captured based on the brightness levels of the interface 1 and the dispensing surface 2, improving the accuracy of edge detection in the CCD screen assembly device. Figure 3 In the diagram, light rays are represented by dashed lines.

[0037] Further integration Figure 4 As shown, in some embodiments, a first angle is formed between the interface 1 and the dispensing horizontal surface 2, and a second angle is formed between the interface 1 and the assembly vertical surface 3. The first angle is no more than 146 degrees and no less than 124 degrees, the second angle is no more than 146 degrees and no less than 124 degrees, and the sum of the first and second angles is 270 degrees. This arrangement improves the light reflection effect of the interface 1 while avoiding interference between the interface 1 and the screen.

[0038] Preferably, both the first and second included angles are 135 degrees. This setting improves the light reflection effect of interface 1 and makes the boundary between interface 1 and the assembly vertical surface 3 more distinct. To make the description of the first and second included angles clearer, the first included angle is... Figure 4 The first angle is represented by angle A, and the second angle is... Figure 4 The angle B is used to represent the angle.

[0039] In some embodiments, the lateral projection width of interface 1 on the plane where the dispensing horizontal surface 2 is located is not greater than 0.18 mm and not less than 0.12 mm. The vertical projection height of interface 1 on the plane where the assembly vertical surface 3 is located is not greater than 0.18 mm and not less than 0.12 mm. This is configured to avoid interference between interface 1 and the screen. Preferably, the lateral projection width of interface 1 on the plane where the dispensing horizontal surface 2 is located and the vertical projection height of interface 1 on the plane where the assembly vertical surface 3 is located are equal, and both are 0.15 mm.

[0040] To more clearly describe the lateral projection width of interface 1 on the plane where the dispensing horizontal surface 2 is located, and the vertical projection height of interface 1 on the plane where the assembly vertical surface 3 is located, the lateral projection width is... Figure 4 The above is expressed by C, and the vertical projection height is... Figure 4 The above is expressed by D.

[0041] Rounded corner 4 connects the reflective horizontal surface 5 and the mounting vertical surface 3. Rounded corner 4 is used to reduce the occurrence of paint chipping and scratches on the mid-frame structure, while also reducing the risk of screen damage from impacts. Rounded corner 4 can also be used to reflect light, increasing the distinction between it and the reflective horizontal surface 5 and the adhesive-coated horizontal surface 2, making the edge features of the mid-frame structure more obvious and improving the accuracy of edge gripping in CCD screen assembly equipment.

[0042] The reflective surface 5 is located on the upper side of the middle frame structure, and is positioned above and parallel to the adhesive dispensing surface 2. The reflective surface 5 can also reflect light, further enhancing the edge features of the middle frame structure.

[0043] In some embodiments, the mid-frame structure includes multiple borders 6 connected end to end, each border 6 having a dividing interface 1, a dispensing horizontal surface 2, and an assembly vertical surface 3. The dividing interface 1 and the assembly vertical surface 3 are of equal length along the length of their respective borders 6. This arrangement makes the edge features of the borders 6 more prominent, resulting in better edge detection in CCD screen assembly devices.

[0044] In some other embodiments, in any frame 6, the length of the interface 1 may be less than the length of the mounting vertical surface 3 along the length direction of the frame 6. This configuration reduces the manufacturing cost of the middle frame structure and simplifies mold development.

[0045] Based on the technical solution disclosed herein, a mobile device is also provided, including a screen and a mid-frame structure as described above, with the screen assembled onto the mid-frame structure. Because the mid-frame structure offers more precise edge detection, screen assembly becomes more accurate and stable, making the mobile device more competitive in the market. The mobile device can be a mobile phone, computer, watch, or other similar device.

[0046] Based on the technical solution disclosed herein, such as Figures 4 to 6 As shown, a screen assembly method is also provided, including the following steps:

[0047] In step 301, strip light and ring light are emitted toward the middle frame structure as described above, with the emission direction of the ring light parallel to the assembly vertical surface 3.

[0048] The bar light is emitted by bar light source 7, and its intensity is greater than that of the ring light. The ring light complements the bar light and makes the light more uniform and softer, improving the edge sharpness of the mid-frame structure.

[0049] The emitted strip and ring light include:

[0050] Step 3011: Adjust the emission direction of the strip light until the strip light obliquely illuminates the assembly vertical surface 3, thereby ensuring sufficient distribution of the light source.

[0051] Furthermore, to improve the light reflection effect of the mid-frame structure, reduce glare and shadows, and make edge features more prominent and accurate, the emission direction of the strip light forms a 30-degree angle with the assembly vertical surface 3. To make the angle between the emission direction of the strip light and the assembly vertical surface 3 clearer, this angle is... Figure 4 The angle E is used to represent this. Admittedly, an included angle E of 30 degrees is merely a preferred embodiment in this disclosure; for different mid-frame structures or different edge-finding requirements, the included angle E can also be other angle values. Figure 3 In the diagram, light rays are represented by dashed lines.

[0052] The emitted strip and ring light include:

[0053] Step 3012: Adjust the light source positions of the bar light and the ring light so that the bar light and the ring light at least cover the interface 1, the adhesive surface 2, the rounded corner 4, and the reflective surface 5. This setting makes the distinction between the light and dark areas of the mid-frame structure more obvious, improves the edge-grabbing accuracy of the CCD screen assembly equipment, thereby improving the screen assembly yield and reducing the occurrence of rework, scrap, and other problems.

[0054] In some embodiments, the bar light includes multiple sets of light sources of different colors, and when the bar light is turned on, it can emit several bars of different colors. Further, the multiple sets of light sources of different colors are, but are not limited to, red, green, blue, warm white, and cool white light sources. To make the ring light more uniform and softer, a reflector or diffuser can be added inside the ring light to control the direction of the light.

[0055] In step 302, a projected grayscale image of the middle frame structure is obtained, and the assembly edge is determined based on the brightness difference of the projected grayscale image.

[0056] In step 303, the screen is assembled according to the assembly edges.

[0057] Based on the technical solution of this disclosure, a screen assembly platform is also provided for implementing the screen assembly method described above. The screen assembly platform includes a camera component (not shown), a light source component (not shown), a placement platform (not shown), and a robotic arm (not shown). The placement platform is used to support the mid-frame structure. The camera component and the light source component are located above the mid-frame structure, and the optical axis direction of the camera component is perpendicular to the adhesive dispensing surface 2.

[0058] A camera component is used to acquire a projected grayscale image of the mid-frame structure. Further, in some embodiments, the camera component can directly acquire a projected grayscale image of the mid-frame structure. In other embodiments, the camera component includes a camera and a grayscale processing accessory; the camera is used to acquire a projected color image of the mid-frame structure, and the grayscale processing accessory is used to process the color image into a grayscale image. A robotic arm is used to assemble the screen onto the mid-frame structure based on the brightness differences of the projected grayscale image.

[0059] It should be noted that the technical solutions or features described in the above embodiments can be combined or complemented by each other without conflict. The scope of protection of this disclosure is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A mid-frame structure, characterized in that, It includes a partition, a dispensing horizontal surface, and an assembly vertical surface located inside the middle frame structure; the partition is connected between the dispensing horizontal surface and the assembly vertical surface, and the partition is inclined.

2. The middle frame structure according to claim 1, characterized in that, The interface forms a first angle with the dispensing horizontal surface, and the interface forms a second angle with the assembly vertical surface. Both the first angle and the second angle do not exceed 146 degrees and are not less than 124 degrees.

3. The middle frame structure according to claim 2, characterized in that, The width of the lateral projection of the interface on the plane where the dispensing surface is located is not greater than 0.18 mm and not less than 0.12 mm.

4. The middle frame structure according to claim 1, characterized in that, It also includes rounded corners and a reflective horizontal surface; the reflective horizontal surface is located on the upper side of the middle frame structure; the rounded corners connect the reflective horizontal surface and the assembly vertical surface.

5. The middle frame structure according to claim 1, characterized in that, It includes multiple borders connected end to end, and each of the borders is provided with the interface, the dispensing horizontal surface and the assembly vertical surface; The interface and the assembly vertical surface are set to be of equal length in the length direction of their respective borders.

6. A mobile device, characterized in that, It includes a screen and a mid-frame structure as described in any one of claims 1 to 5, wherein the screen is assembled to the mid-frame structure.

7. A screen assembly method, characterized in that, Includes the following steps: Emitting strip light and ring light to the middle frame structure as described in any one of claims 1-5, wherein the emission direction of the ring light is parallel to the assembly vertical surface; Obtain the projected grayscale image of the middle frame structure, and determine the assembly edge based on the brightness difference of the projected grayscale image; The screen is assembled according to the assembly edges.

8. The screen assembly method according to claim 7, characterized in that, The emitted strip light and ring light include: Adjust the emission direction of the strip light until the strip light obliquely illuminates the assembly vertical surface.

9. The screen assembly method according to claim 8, characterized in that, The emission direction of the strip light forms a 30-degree angle with the vertical surface of the assembly.

10. The screen assembly method according to claim 7, characterized in that, The middle frame structure includes rounded corners and an upper reflective surface; The emitted strip light and ring light include: Adjust the light source positions of the strip light and the ring light so that the strip light and the ring light at least cover the interface, the dispensing surface, the rounded corners, and the reflective surface.

11. A screen assembly platform, characterized in that, For implementation of the screen assembly method according to any one of claims 7 to 10, the screen assembly platform includes a shooting component, a light source component, a placement platform, and a robotic arm; the placement platform is used to support the mid-frame structure, the shooting component and the light source component are located above the mid-frame structure, and the optical axis direction of the shooting component is perpendicular to the dispensing horizontal surface, the shooting component is used to acquire a projected grayscale image of the mid-frame structure; the robotic arm is used to assemble the screen onto the mid-frame structure according to the brightness and darkness distinction of the projected grayscale image.

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