Folding mechanism, electronic equipment and assembling method of electronic equipment

Abstract

The invention relates to the technical field of electronic equipment, in particular to a folding mechanism, electronic equipment and an assembling method of the electronic equipment. The folding mechanism comprises a first door plate and a second door plate which are rotationally connected, the first door plate is further connected with the first middle frame, the second door plate is further connected with the second middle frame, at least one first compensation glue groove is formed in the surface of the first door plate, and the first compensation glue groove is filled with compensation glue. The difference between the height of the side, facing the flexible display screen, of the first middle frame and the height of the side, facing the flexible display screen, of the compensation glue on the first door plate in the first direction is within a first preset range; and / or at least one second compensation glue groove is formed in the surface of the second door plate, the second compensation glue groove is filled with compensation glue, and the height difference value of the side, facing the flexible display screen, of the second middle frame and the side, facing the flexible display screen, of the compensation glue on the second door plate is within a second preset range. The folding mechanism provided by the invention can reduce creases on the flexible display screen corresponding to the folding mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a folding mechanism, an electronic device, and an assembly method of the electronic device. Background Art

[0002] In recent years, flexible displays have been widely used in a variety of foldable electronic devices due to their thinness, lightness, and resistance to breakage. These devices also include a housing assembly for supporting the flexible display. This housing assembly typically consists of two housings and a folding mechanism connected between the two housings. The folding mechanism deforms the two housings to fold or unfold relative to each other, driving the flexible display to fold or unfold.

[0003] However, there is a tolerance between the folding mechanism and the two shells, which causes the middle part of the flexible display screen to be uneven and have poor flatness. Therefore, after being flattened, there is usually a crease on the flexible display screen at the position corresponding to the folding mechanism. Summary of the Invention

[0004] The embodiments of the present application provide a folding mechanism, an electronic device, and an assembly method for the electronic device. The folding mechanism can reduce creases on a corresponding flexible display screen.

[0005] In a first aspect, the present application provides a folding mechanism, which includes a first door panel and a second door panel. The first door panel and the second door panel are rotatably connected, and the side of the first door panel away from the second door panel is used to connect to the first middle frame, and the side of the second door panel away from the first door panel is used to connect to the second middle frame. Wherein, at least one first compensation glue groove is provided on the surface of the first door panel, and the first compensation glue groove is filled with compensation glue, and the height difference between the side of the first middle frame facing the flexible display screen and the side of the compensation glue on the first door panel facing the flexible display screen along the first direction is within a first preset range. And / or, at least one second compensation glue groove is provided on the surface of the second door panel, and the second compensation glue groove is filled with compensation glue, and the height difference between the side of the second middle frame facing the flexible display screen and the side of the compensation glue on the second door panel facing the flexible display screen along the first direction is within a second preset range. The first direction is the thickness direction of the first door panel or the second door panel. In this manner, the compensating adhesive cured in the first compensating adhesive groove can increase the height of the first door panel along the first direction, allowing the actual difference between the first door panel and the first middle frame to fall within a first preset value. This can reduce the tensile force exerted by the adhesive on the flexible display screen when attached to the first door panel, thereby reducing the crease in the portion of the flexible display screen corresponding to the first door panel. Similarly, the compensating adhesive cured in the second compensating adhesive groove can increase the height of the second door panel along the first direction, allowing the actual difference between the second door panel and the middle frame to fall within a second preset value. This can reduce the tensile force exerted by the adhesive on the flexible display screen when attached to the second door panel, thereby reducing the crease in the portion of the flexible display screen corresponding to the second door panel.

[0006] It is worth mentioning that when filling the compensation glue, it can be filled only in the first compensation glue groove, or it can be filled only in the second compensation overflow glue groove, and the specific amount can be adjusted according to actual needs.

[0007] In some embodiments, the first preset range and the second preset range are -0.05 to 0.05 mm. The first preset range is the error range of the first middle frame and the first door panel along the first direction when the design is in progress. The second preset range is the error range of the second middle frame and the second door panel along the first direction when the design is in progress.

[0008] The thickness direction of the first door panel can be from the surface of the first door panel not provided with the at least one first compensating adhesive groove to the surface of the first door panel provided with the at least one first compensating adhesive groove, and the thickness direction of the second door panel can be from the surface of the second door panel not provided with the at least one second compensating adhesive groove to the surface of the second door panel provided with the at least one second compensating adhesive groove. The first direction can also be the thickness direction of the first and second middle frames.

[0009] In some embodiments, the folding mechanism may further include a main rotating shaft, with the first door panel and the second door panel positioned on either side of the main rotating shaft, the first door panel and the second door panel being rotatably connected via the main rotating shaft. The main rotating shaft may be a plate-shaped structure. An overflow glue groove and a compensating glue groove may be provided on the main rotating shaft. The overflow glue groove may extend in the same direction as the main rotating shaft, and the compensating glue groove may extend in the same direction as the main rotating shaft. In some embodiments, the overflow glue groove may extend at an angle to the main rotating shaft.

[0010] In some embodiments, the first door panel further comprises at least one first glue overflow groove, wherein the at least one first glue overflow groove and the at least one first compensation glue groove are located on the same surface of the first door panel. The second door panel further comprises at least one second glue overflow groove, wherein the at least one second glue overflow groove and the at least one second compensation glue groove are located on the same surface of the second door panel. Adhesive may be disposed in the first glue overflow groove and the second glue overflow groove to bond the flexible display to the folding mechanism.

[0011] In some embodiments, the first glue overflow groove may include a plurality of first sub-glue overflow grooves, the plurality of first sub-glue overflow grooves being arranged along a second direction, where the second direction is the lengthwise direction of the first door panel. Specifically, the plurality of first sub-glue overflow grooves are spaced apart along the second direction. When bonding the flexible display to the first door panel, the first sub-glue overflow grooves at the leading and trailing ends of the plurality of first sub-glue overflow grooves along the first direction are filled with adhesive, while the remaining first sub-glue overflow grooves are partially or completely filled with adhesive to ensure a stable connection between the flexible display and the first door panel.

[0012] In some embodiments, in a projection along the first direction, the first glue overflow groove is in an elongated strip shape, and two ends of the first glue overflow groove are close to two ends of the first door panel along the second direction.

[0013] In some embodiments, the first compensating adhesive groove may include multiple first sub-compensating adhesive grooves, the multiple first sub-compensating adhesive grooves being arranged along the second direction, with the first compensating adhesive grooves at the leading and trailing ends of the second direction being located near both ends of the first door panel. In this embodiment, the multiple first sub-compensating adhesive grooves may be spaced apart along the second direction. When filling the first compensating adhesive grooves with compensating adhesive, the first sub-compensating adhesive grooves at the leading and trailing ends of the second direction are both filled with compensating adhesive, while the remaining first sub-compensating adhesive grooves are partially or completely filled with compensating adhesive. The first sub-compensating adhesive grooves may extend along the second direction, or along a third direction, where the third direction is the width of the door panel.

[0014] In some embodiments, in a projection along the first direction, the first compensation glue groove is in an elongated strip shape, and two ends of the first compensation glue groove are close to two ends of the first door panel along the second direction.

[0015] In some embodiments, there are two first compensating adhesive grooves, located on either side of the first overflow adhesive groove. The two first compensating adhesive grooves can enhance the support between the flexible display and the first door panel, thereby reducing creases in the flexible display at the first door panel. The two first compensating adhesive grooves can have the same or different numbers of first sub-compensating adhesive grooves.

[0016] In some embodiments, the second glue overflow groove may include a plurality of second sub-glue overflow grooves, and the plurality of second sub-glue overflow grooves are arranged along the second direction. Specifically, the plurality of second sub-glue overflow grooves are spaced apart along the second direction. When bonding the flexible display to the second door panel, the second sub-glue overflow grooves at the leading and trailing ends of the plurality of second sub-glue overflow grooves along the first direction are filled with adhesive, and the remaining second sub-glue overflow grooves are partially or completely filled with adhesive to ensure a stable connection between the flexible display and the second door panel.

[0017] In some embodiments, in the projection along the first direction, the second glue overflow groove is in an elongated strip shape, and two ends of the second glue overflow groove along the second direction are close to two ends of the first door panel.

[0018] In some embodiments, the second compensating adhesive groove includes multiple second sub-compensating adhesive grooves, each of which is arranged along the second direction, with the second compensating adhesive grooves at the leading and trailing ends of the second direction being located near both ends of the second door panel. In this embodiment, the multiple second sub-compensating adhesive grooves can be spaced apart along the second direction. When filling the second compensating adhesive grooves, the second sub-compensating adhesive grooves at the leading and trailing ends of the second direction are both filled with compensating adhesive, while the remaining second sub-compensating adhesive grooves are partially or completely filled with compensating adhesive. The second sub-compensating adhesive grooves can extend along the second direction, or along a third direction.

[0019] In some embodiments, in the projection along the first direction, the second compensation glue groove is in the shape of an elongated strip, and two ends of the second compensation glue groove along the second direction are close to two ends of the second door panel.

[0020] In some embodiments, there are two second compensating adhesive grooves, located on either side of the second overflow adhesive groove. These two second compensating adhesive grooves can enhance the support between the flexible display and the second door panel, thereby reducing creases in the flexible display at the second door panel. The two second compensating adhesive grooves can have the same or different number of second sub-compensating adhesive grooves.

[0021] In a second aspect, the present application further provides an electronic device, comprising a first middle frame, a second middle frame, a flexible display, adhesive, and a folding mechanism according to any technical solution of the first aspect. The first middle frame and the second middle frame can be relatively unfolded or folded by the folding mechanism. The adhesive is filled in the first and second overflow grooves, and the flexible display is fixed to the first and second door panels by the adhesive. The electronic device can specifically be a smartphone, a smartwatch, a tablet computer, a laptop computer, etc. Specifically, the electronic device is a foldable electronic device, such as a foldable mobile phone or a foldable tablet computer.

[0022] In the present application, since the first door panel and the second door panel are respectively provided with the first compensation glue groove and the second compensation glue groove, the first compensation glue groove and the second compensation glue groove are used to fill the compensation glue, so that the height difference between the first door panel and the first middle frame meets the first preset value, and the height difference between the second door panel and the second middle frame meets the second preset value. When the flexible display screen is bonded to the folding mechanism, the flatness of the position corresponding to the folding mechanism of the flexible display screen will be improved, and when the adhesive glue bonds the flexible display screen to the folding mechanism, the tensile force of the adhesive glue on the flexible display screen will also be reduced, thereby reducing the crease of the flexible display screen at the folding mechanism.

[0023] In a third aspect, the present application further provides a method for assembling the electronic device according to the second aspect, the method comprising the following steps:

[0024] When a height difference h1 between the side of the first middle frame facing the flexible display screen and the side of the first door panel facing the flexible display screen is greater than a first preset value, filling compensation glue into one or more first compensation glue grooves based on the difference between the height difference h1 and the first preset value;

[0025] Pressing the compensation glue so that the height difference between the side of the first middle frame facing the flexible display and the side of the compensation glue on the first door panel facing the flexible display is within a first preset range;

[0026] When the compensating adhesive in the first compensating adhesive groove is solidified, the mold for pressing the compensating adhesive is separated from the compensating adhesive;

[0027] Fill the first glue overflow groove with adhesive.

[0028] Another method is also included:

[0029] When a height difference h1 between the side of the first middle frame facing the flexible display and the side of the first door panel facing the flexible display is greater than a first preset value, compensation glue is filled into one or more first compensation glue grooves based on the difference between the height difference h1 and the first preset value; when a height difference h2 between the side of the second middle frame facing the flexible display and the side of the second door panel facing the flexible display is greater than a second preset value, compensation glue is filled into one or more second compensation glue grooves based on the difference between the height difference h2 and the second preset value;

[0030] The compensation glue is pressed so that the height difference between the side of the first middle frame facing the flexible display and the side of the compensation glue on the first door panel facing the flexible display is within a first preset range, and the height difference between the side of the second middle frame facing the flexible display and the side of the compensation glue on the second door panel facing the flexible display is within a second preset range;

[0031] When the compensation glue in the first compensation glue groove and the second compensation glue groove is solidified, the mold for pressing the compensation glue is separated from the compensation glue;

[0032] The first glue overflow groove and the second glue overflow groove are filled with adhesive glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0034] Figure 2a A schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0035] Figure 2b A schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0036] Figure 2cA schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0037] Figure 3 A flowchart of an assembly method for an electronic device provided in an embodiment of the present application;

[0038] Figure 4a A schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0039] Figure 4b A schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0040] Figure 4c A schematic diagram of another structure of an electronic device provided in an embodiment of the present application;

[0041] Figure 5 Another flow chart of the method for assembling an electronic device provided in an embodiment of the present application;

[0042] Figure 6 A schematic structural diagram of a folding mechanism provided in an embodiment of the present application;

[0043] Figure 7 A schematic diagram of another structure of the folding mechanism provided in an embodiment of the present application;

[0044] Figure 8 This is a schematic structural diagram of the first door panel in the folding mechanism provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 1-Flexible display screen; 2-First middle frame; 3-Second middle frame; 4-Folding mechanism; 40-First door panel; 400-First compensation glue groove; 4000-First sub-compensation glue groove; 401-First overflow glue groove; 4010-First sub-overflow glue groove; 41-Second door panel; 410-Second compensation glue groove; 4100-Second sub-compensation glue groove; 411-Second overflow glue groove; 4110-Second sub-overflow glue groove; 42-Main rotating shaft; 43-Compensation glue; 5-Adhesive glue. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0048] The folding mechanism of existing folding mobile devices includes many parts, and each part will have a certain tolerance during the processing. The assembly of each part to form a folding mechanism will have a certain error from the design standard, which will cause the tolerance between the folding mechanism and the shell to be inconsistent with the design tolerance. When the folding mechanism drives the flexible display to fold, obvious creases will appear at the position corresponding to the folding mechanism.

[0049] Therefore, how to reduce the creases on flexible displays has become an urgent problem to be solved.

[0050] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0051] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0052] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application; Figure 2a to Figure 2c This is another structural diagram of an electronic device provided in an embodiment of the present application. Figure 1 、 Figure 2a to Figure 2c The embodiments of the present application provide electronic devices, which may be smartphones, smart watches, tablet computers, and laptop computers. Specifically, the electronic devices are foldable electronic devices, such as foldable phones or foldable tablet computers.

[0053] In some embodiments, an electronic device includes a first middle frame 2, a second middle frame 3, a folding mechanism 4, and a flexible display 1. The first middle frame 2 and the second middle frame 3 are both connected to the folding mechanism 4, and the first middle frame 2 and the second middle frame 3 can be relatively unfolded or folded by the folding mechanism 4. The folding mechanism 4 may include a first door panel 40 and a second door panel 41, which are rotatably connected. The side of the first door panel 40 facing away from the second door panel 41 is connected to the first middle frame 2, and the side of the second door panel 41 facing away from the first door panel 40 is connected to the second middle frame 3. In some embodiments, the folding mechanism 4 may include a first door panel 40, a second door panel 41, and a main shaft 42. When the folding mechanism 4 is in the unfolded state, the first door panel 40 and the second door panel 41 are respectively arranged on either side of the main shaft 42, and the first door panel 40 and the second door panel 41 are both rotatably connected to the main shaft 42. The flexible display 1 is bonded to the first middle frame 2, the second middle frame 3, the first door panel 40, and the second door panel 41. In order to reduce the creases of the corresponding parts of the flexible display screen 1 and the folding mechanism 4, one or more first compensation glue grooves 400 can be provided on the first door panel 40, and one or more second compensation glue grooves 410 can be provided on the second door panel 41. The compensation glue 43 can be filled in the first compensation glue groove 400 and the second compensation glue groove 410 to compensate for the out-of-tolerance areas of the first door panel 40 and the second door panel 41, thereby reducing the creases of the flexible display screen 1.

[0054] When installing the flexible display screen 1, Figure 3 A flow chart of the assembly method of the electronic device provided in the embodiment of the present application. Figure 2a to Figure 2c and Figure 3 , you can take the following steps:

[0055] S10: When the height difference h1 between the side of the first middle frame 2 facing the flexible display screen 1 and the side of the first door panel 40 facing the flexible display screen 1 is greater than a first preset value, based on the difference between the height difference h1 and the first preset value, compensation glue 43 is filled in one or more first compensation glue grooves 400.

[0056] In an embodiment of the present application, the height difference h1 can be the difference between the side of the first middle frame 2 facing the flexible display screen 1 and the side of the first door panel 40 facing the flexible display screen 1. If the height difference h1 is greater than the first preset value, based on the difference between the height difference h1 and the first preset value, the compensation glue 43 is filled in the first compensation glue groove 400.

[0057] In some embodiments, the amount of compensation glue filled in the first compensation glue groove 400 may be the difference between the height difference h1 and the first preset value.

[0058] In some embodiments, a linear white light confocal sensor can be used to scan the first middle frame 2 and the first door panel 40. The side of the first middle frame 2 facing the flexible display 1 can be divided into multiple regions, each of which can be sized at 4*4mm, 5*5mm, or the like. One of these regions, facing the flexible display 1, can be considered an absolute plane. Similarly, the side of the first door panel 40 facing the flexible display 1 can be divided into multiple regions. Selected regions facing the flexible display are compared with the absolute plane of the first middle frame 2. The height difference between the absolute plane and the side of the selected regions of the first door panel 40 facing the flexible display 1 is calculated. The height difference between the absolute plane of the first middle frame 2 and the selected regions of the first door panel 40 facing the flexible display 1 is h1. Based on the difference between the height difference h1 and a first preset value, the required glue dispensing volume for each selected region of the first door panel 40 can be calculated using the integration principle to fill the first compensation glue groove 400 with compensation glue 43, thereby achieving adaptive glue dispensing of the first door panel 40.

[0059] S20: Pressing the compensation glue 43 so that the height difference between the side of the first middle frame 2 facing the flexible display screen 1 and the side of the compensation glue 43 on the first door panel 40 facing the flexible display screen 1 is within a first preset range;

[0060] In some embodiments, the first preset value may be a maximum value of the first preset range.

[0061] S21: When the compensation adhesive in the first compensation adhesive groove 400 is solidified, the mold for pressing the compensation adhesive is separated from the compensation adhesive;

[0062] S30 : Filling the first glue overflow groove 401 with adhesive 5 .

[0063] When installing the flexible display screen 1, Figure 5 Another flow chart of the method for assembling an electronic device provided in an embodiment of the present application. Figure 4a to Figure 4c and 5, you can also take the following steps:

[0064] S40: When the height difference h1 between the side of the first middle frame 2 facing the flexible display screen 1 and the side of the first door panel 40 facing the flexible display screen 1 is greater than a first preset value, based on the difference between the height difference h1 and the first preset value, compensation glue 43 is filled in one or more first compensation glue grooves 400; when the height difference h2 between the side of the second middle frame 3 facing the flexible display screen 1 and the side of the second door panel 41 facing the flexible display screen 1 is greater than a second preset value, based on the difference between the height difference h2 and the second preset value, compensation glue 43 is filled in one or more second compensation glue grooves 410.

[0065] In an embodiment of the present application, the height difference h1 can be the difference between the side of the first middle frame 2 facing the flexible display screen 1 and the side of the first door panel 40 facing the flexible display screen 1. If the height difference h1 is greater than the first preset value, based on the difference between the height difference h1 and the first preset value, the compensation glue 43 is filled in the first compensation glue groove 400.

[0066] In an embodiment of the present application, the height difference h2 can be the difference between the side of the second middle frame 3 facing the flexible display screen 1 and the side of the second door panel 41 facing the flexible display screen 1. If the height difference h2 is greater than the second preset value, based on the difference between the height difference h2 and the second preset value, the compensation glue 43 is filled in the second compensation glue groove 410.

[0067] In an embodiment of the present application, a linear white light confocal sensor can be used to scan the first middle frame 2, the first door panel 40, the second door panel 41, and the second middle frame 3. The side of the first middle frame 2 facing the flexible display 1 can be divided into multiple areas, each of which can be 4*4mm, 5*5mm, etc., and one of the areas facing the flexible display 1 can be considered an absolute plane. Similarly, the side of the first door panel 40 facing the flexible display 1 can also be divided into multiple areas, and several of the areas facing the flexible display are selected and compared with the absolute plane in the first middle frame 2. The height difference between the absolute plane and the side of the selected area of ​​the first door panel 40 facing the flexible display 1 is calculated. The height difference between the absolute plane of the first middle frame 2 and the selected area of ​​the first door panel 40 is h1. In the same way, the side of the second middle frame 3 facing the flexible display 1 can be divided into multiple areas, each of which can be 4*4mm, 5*5mm, etc., and one of the areas facing the flexible display 1 can be considered an absolute plane. The side of the second door panel 41 facing the flexible display 1 can also be divided into multiple areas. The sides of several selected areas facing the flexible display are compared with the absolute plane in the second middle frame 3. The height difference between the absolute plane and the side of the selected areas of the second door panel 41 facing the flexible display 1 is calculated. The height difference between the absolute plane of the second middle frame 3 and the selected areas of the second door panel 41 is h2. Based on the difference between the height difference h1 and the first preset value, the integral principle can be used to calculate the amount of glue required for each selected area of ​​the first door panel 40. Based on the difference between the height difference h2 and the second preset value, the integral principle can be used to calculate the amount of glue required for each selected area of ​​the second door panel 41. This allows the first and second compensation glue grooves 400 and 410 to be filled with compensation glue 43, thereby achieving adaptive glue dispensing of the first and second door panels 40 and 41.

[0068] S50: Pressing the compensation glue 43 so that the height difference between the side of the first middle frame 2 facing the flexible display 1 and the side of the compensation glue 43 on the first door panel 40 facing the flexible display 1 is within a first preset range, and the height difference between the side of the second middle frame 3 facing the flexible display 1 and the side of the compensation glue 43 on the second door panel 41 facing the flexible display 1 is within a second preset range;

[0069] The amount of the compensation glue 43 filled in the first compensation glue groove 400 may be the difference between the height difference h1 and the first preset value, and the amount of the compensation glue 43 filled in the second compensation glue groove 410 may be the difference between the height difference h2 and the second preset value.

[0070] In some embodiments, the first preset value may be a maximum value of a first preset range, and the second preset value may be a maximum value of a second preset range.

[0071] S51: When the compensation adhesive in the first compensation adhesive groove 400 and the second compensation adhesive groove 410 is solidified, the mold for pressing the compensation adhesive is separated from the compensation adhesive;

[0072] S60 : Filling the first glue overflow groove 401 and the second glue overflow groove 411 with adhesive 5 .

[0073] In the above embodiment, adhesive glue can also be set on the surfaces of the first middle frame 2 and the second middle frame 3, and the flexible display screen 1 is connected to the adhesive glue on the surfaces of the first middle frame 2 and the second middle frame 3 and the adhesive glue 5 filled in the first overflow glue groove 401 and the second overflow glue groove 411 to fix the flexible display screen 1.

[0074] In the embodiment of the present application, the first preset value and the second preset value can both be between [-0.05mm and 0.05mm], and the first preset range and the second preset range can both be between [-0.03mm and 0.03mm]. In the embodiment of the present application, when the first middle frame 2 is higher than the first door panel 40 and the second middle frame 3 is higher than the second door panel 41, that is, the first preset value and the second preset value are both between [0 and 0.05mm], when the first door panel 40 and the second door panel 41 are compensated, the compensation glue 43 can compensate the first door panel 40 to be flush with the height of the first middle frame 2, and can also compensate the second door panel 41 to be flush with the height of the second middle frame 3.

[0075] For ease of understanding, the first direction, the second direction, and the third direction are exemplarily defined below.

[0076] In the embodiment of the present application, the first direction may be the thickness direction of the first middle frame 2 or the second middle frame 3, or the thickness direction of the first door 40 or the second door panel 41. For example, the first direction may be a direction perpendicular to the absolute plane, and the first direction may be a direction from the absolute plane to the flexible display screen 1. The description of the absolute plane may refer to the description in step S10 or S40, and will not be repeated here.

[0077] In some embodiments, the first direction can be the surface of the first door panel 40 that is not provided with at least one first compensation glue groove 400, pointing to the direction of the surface of the first door panel 40 that is provided with at least one first compensation glue groove 400; the second direction is the surface of the second door panel 41 that is not provided with at least one second compensation glue groove 410, pointing to the direction of the surface of the second door panel 41 that is provided with at least one second compensation glue groove 410.

[0078] The second direction can be the length direction of the first middle frame 2 and the second middle frame 3, or the second direction can be the length direction of the first door 40 and the second door panel 41, and the third direction can be the width direction of the first middle frame 2 and the second middle frame 3, or the third direction can be the width direction of the first door 40 and the second door panel 41.

[0079] In some embodiments, along a first direction, with the surface of the first door panel 40 facing the flexible display 1 as a reference plane, the difference between the surface of the first middle frame 2 facing the display and the reference plane is a height difference h1. The height difference h1 during assembly of the first door panel 40 and the first middle frame 2 can be compared with a first preset value. When the height difference h1 between the first door panel 40 and the first middle frame 2 along the first direction is greater than the first preset value, compensating glue 43 can be filled into the first compensating glue groove 400 to ensure that the height difference between the first door panel 40 and the first middle frame 2 meets the preset height difference.

[0080] In some embodiments, along the first direction, with the surface of the second door panel 41 facing the flexible display 1 as a reference plane, the difference between the surface of the second middle frame 3 facing the flexible display 1 and the reference plane is a height difference h2. This height difference h2, when the second door panel 41 and the second middle frame 3 are assembled, can be compared with a second preset value. When the height difference h2 between the second door panel 41 and the second middle frame 3 along the first direction is greater than the second preset value, compensating glue can be filled into the second compensating glue groove 410 to ensure that the height difference between the second door panel 41 and the second middle frame 3 meets the preset height difference.

[0081] Although, when the first door panel 40 is processed, it meets the processing standards, and the thickness error of the first door panel 40 is within the standard range, and the first middle frame 2 is processed, it meets the processing standards, and the thickness error of the first middle frame 2 is within the standard range, and when the second door panel 41 is processed, it meets the processing standards, and the error of the second door panel 41 along the first direction is within the standard range, and the second middle frame 3 meets the processing standards, and the error of the second middle frame 3 along the first direction is within the standard range, the height difference between the first door panel 40 and the first middle frame 2, and the height difference between the second door panel 41 and the second middle frame 3 do not meet the design requirements. Standard situation, therefore, in this way, the compensation glue 43 can increase the height of the first door panel 40 and the second door panel 41, so that the height difference between the first door panel 40 and the first middle frame 2, and the height difference between the second door panel 41 and the second middle frame 3 respectively meet the first preset value and the second preset value. When the flexible display screen 1 is bonded to the folding mechanism 4, the flatness of the position corresponding to the folding mechanism 4 will be improved, and when the adhesive glue 5 bonds the flexible display screen 1 to the folding mechanism 4, the tensile force of the adhesive glue 5 on the flexible display screen 1 will also be reduced, thereby reducing the crease of the flexible display screen 1 at the folding mechanism 4.

[0082] The folding mechanism 4 will be described in more detail below.

[0083] Figure 6 A structural schematic diagram of the folding mechanism provided in an embodiment of the present application.

[0084] Reference Figure 6 The folding mechanism 4 may include a first door panel 40 and a second door panel 41, wherein the first door panel 40 and the second door panel 41 are rotatably connected. The side of the first door panel 40 away from the second door panel 41 may be connected to the first middle frame 2, and the side of the second door panel 41 away from the first door panel 40 may be connected to the second middle frame 3. The surface of the first door panel 40 may be provided with at least one first compensation glue groove 400, wherein the first compensation glue groove 400 can be filled with compensation glue 43. The surface of the second door panel 41 may be provided with at least one second compensation glue groove 410, wherein the second compensation glue groove 410 can be filled with compensation glue 43.

[0085] In some embodiments, the surface of the first door panel 40 is further provided with at least one first glue overflow groove 401. The at least one first glue overflow groove 401 and the at least one first compensation glue groove 400 are located on the same surface of the first door panel 40. The first glue overflow groove 401 can be filled with adhesive 5. The surface of the second door panel 41 is further provided with at least one second glue overflow groove 411. The at least one second glue overflow groove 411 and the at least one second compensation glue groove 410 are located on the same surface of the second door panel 41. The second glue overflow groove 411 can be filled with adhesive 5.

[0086] In the embodiment of the present application, along the first direction, the height difference between the first middle frame 2 and the height of the compensating adhesive 43 on the first door panel 40 is within a first preset range. When the actual height difference between the first middle frame 2 and the first door panel 40 along the first direction is greater than the first preset value, the compensating adhesive 43 can be filled into the first compensating adhesive groove 400. After the compensating adhesive is cured, the compensating adhesive 43 and the first door panel 40 can be understood as a one-piece structure. The provision of the compensating adhesive 43 can increase the height of the first door panel 40 along the first direction, ensuring that the actual height difference between the first door panel 40, with the compensating adhesive, and the first middle frame 2 is within the first preset range. This can reduce the tensile force applied to the flexible display 1 by the adhesive 5 disposed in the first overflow adhesive groove 401, thereby reducing the crease of the flexible display 1 corresponding to the first door panel 40.

[0087] In some embodiments, along the first direction, the difference between the height of the second middle frame 3 and the height of the compensating adhesive 43 on the second door panel 41 is within a second preset range. When the actual height difference between the second middle frame 3 and the second door panel 41 along the first direction is greater than the second preset value, the second compensating adhesive groove 410 can be filled with compensating adhesive 43. After the compensating adhesive 43 is cured, the compensating adhesive 43 and the second door panel 41 can be understood as a one-piece structure. The provision of the compensating adhesive 43 can increase the height of the second door panel 41 along the first direction, ensuring that the actual height difference between the second door panel 41 with the compensating adhesive and the second middle frame 3 is within the second preset range.

[0088] It should be noted that the first direction, the first preset value, and the first preset range may refer to the description of S10, S20, S50, and S50 above. In addition, the first direction may also refer to the above definition of the first direction.

[0089] In the above embodiment, when installing the flexible display screen, the flexible display screen can be fixedly connected to the folding mechanism 4 through the adhesive glue 5 in the first glue overflow groove 401 and the second glue overflow groove 411. Under the tensile force of the adhesive glue 5, the flexible display screen abuts against the cured compensation glue. Due to the setting of the compensation glue 43, the height of the first door panel 40 and the height of the second door panel 41 along the first direction can be increased, thereby reducing the tensile force on the flexible display screen, and improving the flatness of the flexible display screen on the first middle frame 2, the folding mechanism 4 and the second middle frame 3, so as to reduce the crease of the flexible display screen in the part corresponding to the folding mechanism 4.

[0090] Figure 7 This is a schematic diagram of a folding mechanism provided in an embodiment of the present application. Figure 4c and Figure 7In some embodiments, the folding mechanism 4 may further include a main rotating shaft 42, with the first door panel 40 and the second door panel 41 disposed on either side of the main rotating shaft 42. The first door panel 40 and the second door panel 41 are rotatably connected via the main rotating shaft 42. More specifically, the main rotating shaft 42 may be provided with at least one third compensating glue groove (not shown), and correspondingly, the main rotating shaft 42 may be provided with a third overflow glue groove (not shown).

[0091] Figure 8 This is a schematic diagram of the structure of the first door panel in the folding mechanism provided in the embodiment of the present application. Figure 7 and Figure 8 In some embodiments, the first compensation glue groove 400 may include a plurality of first sub-compensation glue grooves 4000, and the plurality of first sub-compensation glue grooves 4000 are arranged along the second direction. In addition, the first sub-compensation glue grooves 4000 located at the head end and the tail end along the second direction are close to the two ends of the first door panel 40, which can improve the stability of the contact between the flexible display screen and the solidified compensation glue. The number of the first sub-compensation glue grooves 4000 can be two, three, four, or five. In some embodiments, the first sub-compensation glue grooves 4000 extend along the second direction, and the compensation glue can be filled in the first sub-compensation glue grooves 4000. When pressed, the compensation glue can move along the extension direction of the first sub-compensation glue grooves 4000, reducing the probability of the compensation glue overflowing into the gap between the first door panel 40 and the first middle frame 2, or the gap between the first door panel 40 and the main shaft 42, thereby improving the stability of the electronic device.

[0092] In some embodiments, multiple first sub-compensating glue grooves 4000 can be arranged along the second direction, and each first sub-compensating glue groove 4000 extends along the third direction. Along the second direction, the first sub-compensating glue grooves 4000 located at the head end and the tail end are close to the two ends of the first door panel 40, which can improve the stability of the connection between the flexible display screen and the solidified compensation glue.

[0093] In some embodiments, the first compensation glue groove 400 may include multiple first sub-compensation glue grooves 4000, and the multiple first sub-compensation glue grooves 4000 are arranged along the second direction, wherein some of the first sub-compensation glue grooves 4000 extend along the second direction, and another part of the first sub-compensation glue grooves 4000 extend along the third direction.

[0094] In the above embodiment, there can be two first compensating adhesive grooves 400, arranged on either side of the first overflow adhesive groove 401. One first compensating adhesive groove 400 can extend along the second direction. Along the second direction, the two ends of one first compensating adhesive groove 400 are adjacent to the ends of the first door panel 40. Alternatively, one first compensating adhesive groove 400 can include a first sub-compensating adhesive groove 4000, with the two ends of the first sub-compensating adhesive groove 4000 adjacent to the ends of the first door panel 40, while the other first compensating adhesive groove 400 can include multiple first sub-compensating adhesive grooves 4000, with the multiple first sub-compensating adhesive grooves 4000 spaced apart along the second direction. In this manner, two first compensating adhesive grooves 400 can be provided. The two first compensating adhesive grooves 400 can increase the number of supporting portions between the flexible display and the first door panel 40, thereby reducing creases on the flexible display at the first door panel 40.

[0095] In some embodiments, the first glue overflow groove 401 may include multiple first sub-glue overflow grooves 4010, which are arranged along the second direction. The first sub-glue overflow grooves 4010 at the leading and trailing ends are located near the ends of the first door panel 40. A slot may also be provided in the gap between two adjacent first sub-glue overflow grooves 4010, which can also be used to fill the compensating glue. In some embodiments, along the second direction, the ends of the first glue overflow grooves 401 are located near the ends of the first door panel 40, which can improve the stability of the bonding between the flexible display 1 and the first door panel 40.

[0096] In some embodiments, the second compensation glue groove 410 may include multiple second sub-compensation glue grooves 4100. The multiple second sub-compensation glue grooves 4100 are arranged along the second direction. In addition, the second sub-compensation glue grooves 4100 located at the leading and trailing ends of the second direction are close to both ends of the second door panel 41, thereby improving the stability of the contact between the flexible display 1 and the cured compensation glue. The number of second sub-compensation glue grooves 4100 can be three, four, or five. In some embodiments, the second sub-compensation glue grooves 4100 extend along the second direction. The compensation glue can be filled in the second sub-compensation glue grooves 4100. When pressed together, the compensation glue moves along the extension direction of the second sub-compensation glue grooves 4100, reducing the probability of the compensation glue overflowing into the gap between the second door panel 41 and the second middle frame 3, or the gap between the second door panel 41 and the main shaft 42, thereby improving the stability of the electronic device.

[0097] In some embodiments, multiple second sub-compensating glue grooves 4100 are arranged along the second direction, and each second sub-compensating glue groove 4100 extends along the third direction. Along the second direction, the second sub-compensating glue grooves 4100 located at the head end and the tail end are close to the two ends of the second door panel 41, which can improve the stability of the connection between the flexible display screen and the solidified compensation glue.

[0098] In some embodiments, the second compensation glue groove 410 may include multiple second sub-compensation glue grooves 4100, and the multiple second sub-compensation glue grooves 4100 are arranged along the second direction, wherein some of the second sub-compensation glue grooves 4100 extend along the second direction, and another part of the second sub-compensation glue grooves 4100 extend along the third direction.

[0099] In the above embodiment, there may be two second compensating adhesive grooves 410, located on either side of the second overflow adhesive groove 411. One second compensating adhesive groove 410 may extend along the second direction. Along the second direction, the two ends of one second compensating adhesive groove 410 are adjacent to the two ends of the second door panel 41. The other second compensating adhesive groove 410 includes multiple second sub-compensating adhesive grooves 4100, which are spaced apart along the second direction. In this embodiment, the presence of two second compensating adhesive grooves 410 increases the number of supporting portions between the flexible display and the second door panel 41, thereby reducing creases in the flexible display at the second door panel 41.

[0100] In some embodiments, the second glue overflow groove 411 may include multiple second sub-glue overflow grooves 4110, arranged along the second direction. The second sub-glue overflow grooves 4110 at the leading and trailing ends are located near the ends of the second door panel 41. A slot may also be provided in the gap between two adjacent second sub-glue overflow grooves 4110, which can also be used to fill the compensating glue. In some embodiments, the ends of the second glue overflow grooves 411 along the second direction are located near the ends of the second door panel 41, thereby improving the stability of the bonding between the flexible display and the second door panel 41.

[0101] In the above embodiment, the number of first sub-compensating adhesive grooves 4000 that can be included in the first compensating adhesive groove 400 can be adjusted according to actual needs, as long as the flexible display can be stably supported. Similarly, the number of second sub-compensating adhesive grooves 4100 included in the second compensating adhesive groove 410 can be adjusted according to actual needs. In addition, when the first compensating adhesive groove 400 includes multiple first sub-compensating adhesive grooves 4000, the extension directions of the multiple first sub-compensating adhesive grooves 4000 can also be different. When the second compensating adhesive groove 410 includes multiple second sub-compensating adhesive grooves 4100, the extension directions of the multiple second sub-compensating adhesive grooves 4100 can also be different.

[0102] It should be noted that the second direction and the third direction in the above embodiments may refer to the above definitions of the second direction and the third direction.

[0103] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A folding mechanism, applied to electronic equipment, characterized in that: The folding mechanism includes a first door panel and a second door panel, the first door panel and the second door panel are rotatably connected, a side of the first door panel away from the second door panel is used to connect to the first middle frame, and a side of the second door panel away from the first door panel is used to connect to the second middle frame, wherein: At least one first compensation glue groove is provided on the surface of the first door panel, the first compensation glue groove is filled with compensation glue, and the height difference along the first direction between the side of the first middle frame facing the flexible display screen and the side of the compensation glue on the first door panel facing the flexible display screen is within a first preset range; and / or, At least one second compensation glue groove is provided on the surface of the second door panel, and the second compensation glue groove is filled with compensation glue. The height difference along the first direction between the side of the second middle frame facing the flexible display screen and the side of the compensation glue on the second door panel facing the flexible display screen is within a second preset range; The first direction is a thickness direction of the first door panel or the second door panel.

2. The folding mechanism according to claim 1, wherein: The first preset range and the second preset range are -0.05 to 0.05 mm.

3. The folding mechanism according to claim 1 or 2, wherein: The thickness direction of the first door panel is the surface of the first door panel not provided with the at least one first compensation glue groove, pointing to the direction of the surface of the first door panel provided with the at least one first compensation glue groove. The thickness direction of the second door panel is the surface of the second door panel not provided with the at least one second compensation glue groove, pointing to the direction of the surface of the second door panel provided with the at least one second compensation glue groove.

4. The folding mechanism according to any one of claims 1 to 3, characterized in that: The folding mechanism includes a main rotating shaft, the first door panel and the second door panel are arranged on both sides of the main rotating shaft, and the first door panel and the second door panel are rotationally connected through the main rotating shaft.

5. The folding mechanism according to any one of claims 1 to 4, characterized in that: The surface of the first door panel is also provided with at least one first glue overflow groove, and the at least one first glue overflow groove and the at least one first compensation glue groove are located on the same surface of the first door panel. The surface of the second door panel is also provided with at least one second glue overflow groove, and the at least one second glue overflow groove and the at least one second compensation glue groove are located on the same surface of the second door panel.

6. The folding mechanism according to claim 5, wherein: The first glue overflow groove includes a plurality of first sub-glue overflow grooves, and the plurality of first sub-glue overflow grooves are arranged along a second direction, and the second direction is a length direction of the first door panel.

7. The folding mechanism according to any one of claims 1 to 6, characterized in that: The first compensation glue groove includes a plurality of first sub-compensation glue grooves, and the plurality of first sub-compensation glue grooves are arranged along the second direction; Along the second direction, the first sub-compensating glue grooves located at the head end and the tail end are close to two ends of the first door panel.

8. The folding mechanism according to any one of claims 1 to 7, wherein: There are two first compensation glue grooves, and the two first compensation glue grooves are located on both sides of the first overflow glue groove.

9. The folding mechanism according to claim 5 or 6, characterized in that: The second glue overflow groove includes a plurality of second sub-glue overflow grooves, and the plurality of second sub-glue overflow grooves are arranged along the second direction.

10. The folding mechanism according to any one of claims 1 to 9, characterized in that: The second compensation glue groove includes a plurality of second sub-compensation glue grooves, and the plurality of second sub-compensation glue grooves are arranged along the second direction; Along the second direction, the second sub-compensating glue grooves located at the head end and the tail end are close to both ends of the second door panel.

11. The folding mechanism according to claim 9, wherein: There are two second compensation glue grooves, and the two second compensation glue grooves are located on both sides of the second overflow glue groove.

12. An electronic device, characterized in that: The electronic device includes the first middle frame, the second middle frame, a flexible display, adhesive and the folding mechanism according to any one of claims 1 to 11, the first middle frame and the second middle frame can be relatively unfolded or folded by the folding mechanism, the adhesive is filled in the first glue overflow groove and the second glue overflow groove, and the flexible display is fixed to the first door panel and the second door panel by the adhesive.

13. An assembly method for an electronic device according to claim 12, characterized in that: include: When a height difference h1 between the side of the first middle frame facing the flexible display screen and the side of the first door panel facing the display screen is greater than a first preset value, filling compensation glue into one or more first compensation glue grooves based on the difference between the height difference h1 and the first preset value; Pressing the compensation glue so that a height difference between a side of the first middle frame facing the flexible display and a side of the compensation glue on the first door panel facing the flexible display is within a first preset range; When the compensating adhesive in the first compensating adhesive groove is solidified, the mold for pressing the compensating adhesive is separated from the compensating adhesive; The first glue overflow groove is filled with adhesive.

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