A conforming apparatus and method

Abstract

Embodiments of the present application provide a bonding device for bonding a display panel and a curved backlight module, comprising: a first bearing mechanism, comprising: a first bearing surface; a positioning part located on the side of the first bearing surface, used for moving a display panel to be processed; a second bearing mechanism, comprising: a second bearing surface; a control mechanism, used for controlling the first bearing mechanism and / or the second bearing mechanism to move, so as to make the display panel to be processed located between the first bearing surface and the second bearing surface to be bent into a target curved display panel, and also used for bonding the target curved display panel and the curved backlight module; the curvatures of the first bearing surface and the second bearing surface are the same as the target curvature of the display panel to be processed, and the target curved display panel is a display panel with the target curvature. Embodiments of the present application complete the bending and shape fixing of the display panel through the second bearing mechanism, and make the curved display panel and the curved backlight module to be bonded, so as to realize the high-precision and high-efficiency curved bonding in an integrated manner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to a laminating device and a laminating method. BACKGROUND

[0002] With the rise of curved display, the type of curved display has been extended to liquid crystal display based on thin film transistor (TFT) material, and is widely used as the display of electronic products such as television and computer due to its low cost. However, the current processing of curved liquid crystal display still has problems such as insufficient assembly precision, low automation, and needs to be improved in processing efficiency and product yield, and technical personnel are needed to solve the problems. SUMMARY

[0003] In order to solve the above problems, the embodiments of the present application provide a laminating device and a laminating method, aiming to improve the processing precision and efficiency of curved liquid crystal display.

[0004] The embodiments of the present application provide a laminating device for laminating a display panel to be processed and a curved backlight module, the laminating device comprising:

[0005] A first bearing mechanism comprising: a first bearing surface, the first bearing surface being curved and having the same curvature as a target curvature of the display panel to be processed;

[0006] A positioning part located on the side of the first bearing surface, used to move the display panel to be processed and fix the display panel to be processed at a predetermined position on the first bearing surface;

[0007] A second bearing mechanism comprising: a second bearing surface, the second bearing surface being parallel to the first bearing surface and being curved and having the same curvature as the target curvature of the display panel to be processed;

[0008] A control mechanism used to control the movement of the first bearing mechanism and / or the second bearing mechanism, so that the first bearing surface and the second bearing surface are close to each other, so that the display panel to be processed between the first bearing surface and the second bearing surface is bent into a target curved display panel; the control mechanism is also used to control the fixation of the target curved display panel on the second bearing surface, and control the movement of the first bearing mechanism and / or the second bearing mechanism, so that the target curved display panel is away from the first bearing surface, so as to laminate the target curved display panel and the curved backlight module;

[0009] Wherein, the target curved display panel is a display panel with a curvature of the target curvature.

[0010] Optionally, the first bearing surface is provided with a plurality of through holes for discharging gas between the display panel to be processed and the first bearing surface during bending of the display panel to be processed.

[0011] Optionally, the first bearing surface is provided with a first opening, and a first photoelectric sensor is arranged in the first opening to detect whether the display panel to be processed is placed on the first bearing surface.

[0012] Optionally, the positioning part comprises:

[0013] The servo motor clamp comprises a plurality of oppositely arranged clamping jaws and a positioning servo motor; the clamping jaws are connected with the positioning servo motor and are used to move towards each other or away from each other under the driving of the positioning servo motor to clamp the display panel to be processed; the clamping jaws are also used to move the display panel to be processed under the driving of the positioning servo motor so that the center of the display panel to be processed coincides with the center of the first bearing surface.

[0014] Optionally, the second bearing surface is provided with a plurality of vacuum holes for adsorbing and fixing the target curved display panel.

[0015] Optionally, the laminating device further comprises:

[0016] The third bearing mechanism comprises a third bearing surface; the third bearing surface is curved and has the same curvature as the curvature of the curved backlight module; and the third bearing surface is used to fix the curved backlight module.

[0017] The control mechanism is also used to control the second bearing mechanism and / or the third bearing mechanism to move so that the target curved display panel is close to and combined with the curved backlight module.

[0018] Optionally, the third bearing mechanism further comprises a plurality of retaining walls arranged around the third bearing surface; the plurality of retaining walls comprise three fixed retaining walls and one movable retaining wall; the movable retaining wall is connected with a pneumatic cylinder device and is used to move under the driving of the pneumatic cylinder device to clamp or release the curved backlight module.

[0019] Optionally, the third bearing surface is provided with a second opening, and a second photoelectric sensor is arranged in the second opening to detect whether the curved backlight module is placed on the third bearing surface.

[0020] Optionally, the control mechanism comprises a first control module, and the first control module comprises:

[0021] The first servo motor is used to drive the second bearing mechanism to move in the direction of the first coordinate axis.

[0022] a second servo motor for driving the second carrier mechanism to move in a direction of a second coordinate axis;

[0023] a third servo motor for driving the second carrier mechanism to rotate in a plane perpendicular to the second coordinate axis.

[0024] Optionally, the control mechanism comprises a second control module, and the second control module comprises:

[0025] a fourth servo motor for driving the third carrier mechanism to move in a direction of a first coordinate axis;

[0026] a fifth servo motor for driving the third carrier mechanism to move in a direction of a third coordinate axis;

[0027] a direct-drive motor for driving the third carrier mechanism to rotate in a plane parallel to the first coordinate axis and the second coordinate axis.

[0028] Optionally, the lamination device further comprises:

[0029] a visual positioning mechanism for obtaining a current position of the target curved display panel and a current position of the curved backlight module, so that the control mechanism controls the third carrier mechanism and / or the second carrier mechanism to move according to the current position of the target curved display panel and the current position of the curved backlight module.

[0030] Optionally, the visual positioning mechanism comprises:

[0031] a first visual sensor, a second visual sensor, and a sixth servo motor; the first visual sensor and the second visual sensor are respectively fixed on two first lead screws with opposite screw directions, the two first lead screws are connected through a first coupling and are connected with the sixth servo motor; the sixth servo motor is used to drive the two first lead screws to rotate, so that the first visual sensor and the second visual sensor move towards or away from each other to a first photographing point, so as to obtain the current position of the target curved display panel.

[0032] Optionally, the visual positioning mechanism comprises:

[0033] a third visual sensor, a fourth visual sensor, a seventh servo motor, and an eighth servo motor; the third visual sensor and the fourth visual sensor are respectively fixed on two second lead screws with opposite screw directions, the two second lead screws are connected through a second coupling and are connected with the seventh servo motor;

[0034] The seventh servo motor is configured to drive the two second lead screws to rotate, so that the third visual sensor and the fourth visual sensor move towards or away from each other along a first coordinate axis direction in which the second lead screws are located.

[0035] The eighth servo motor is configured to drive the third visual sensor and the fourth visual sensor to move synchronously along a third coordinate axis direction on a slide rail.

[0036] The third visual sensor and the fourth visual sensor are configured to obtain a current position of the curved backlight module after moving to a second photographing point.

[0037] Optionally, the display panel is provided with double-sided adhesive tape around an edge of a side surface of the display panel that is attached to the curved backlight module; the double-sided adhesive tape is configured to attach the target curved display panel and the curved backlight module, so that the target curved display panel is combined with the curved backlight module.

[0038] Optionally, the second bearing mechanism further comprises:

[0039] A heating device is configured to heat the double-sided adhesive tape during the process of attaching the target curved display panel to the curved backlight module.

[0040] Through the above embodiments, the present application provides an attaching device, which considers that in the related art, a finished curved display panel is processed, and the finished curved display panel is limited by material properties. If the curvature of the finished curved display panel does not meet the standard, the attaching processing precision of the finished curved display panel and the backlight module may be insufficient or even lead to processing failure. Therefore, in the present application, the bending of the display panel and the attaching of the curved display panel and the backlight module are integrated in the attaching device of the present application, which has the following advantages:

[0041] (1) The second bearing mechanism serves as a device for bending the display panel, a shape fixing device and a carrying device for the curved display panel, and an attaching device for the curved display panel and the curved backlight module, which realizes high integration of the device and is conducive to reducing the cost of the device.

[0042] (2) Through the integration of the device, the display panel is attached to the curved backlight module after the display panel reaches the target curvature, which realizes automatic curved attaching of the display panel and the curved backlight module, is highly compatible with display panels of various shapes and materials, and improves the attaching efficiency of the display panel and the curved backlight module.

[0043] (3) The second bearing mechanism is used as a grabbing and fixing device of the display panel, and can fix the shape of the target curved display panel during the movement and lamination of the target curved display panel and the curved backlight module, that is, the curvature of the target curved display panel is kept as the target curvature until the target curved display panel is laminated with the curved backlight module, and then the second bearing mechanism is separated from the display panel, so that the problems of lamination deviation and air bubbles between the target curved display panel and the curved backlight module are effectively reduced, and the yield of the laminated display module is improved.

[0044] The application further provides a lamination method, which comprises the following steps:

[0045] A display panel to be processed is provided.

[0046] The display panel to be processed is bent by using the lamination device according to any one of the above embodiments to obtain a target curved display panel with a target curvature, and the target curved display panel is laminated with the curved backlight module to obtain a display module.

[0047] According to the above embodiments, the application provides a lamination method, which uses the lamination device according to any one of the above embodiments to integrally perform the bending processing of the display panel and complete the lamination of the target curved display panel and the curved backlight module, so that the curved display module is obtained, and the lamination efficiency and precision of the display panel and the curved backlight module are improved based on low cost, and the product yield is improved. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a schematic diagram of the appearance of a lamination device provided by the application;

[0049] Figure 2 is a schematic diagram of the external structure of a lamination device provided by the application;

[0050] Figure 3 is a schematic diagram of the internal structure of a lamination device provided by the application;

[0051] Figure 4 is a schematic diagram of the structure of a first bearing mechanism provided by the application;

[0052] Figure 5 is a schematic diagram of the structure of a first bearing surface provided by the application;

[0053] Figure 6 is a schematic diagram of the structure of a positioning part provided by the application;

[0054] Figure 7 is a schematic diagram of the placement of a display panel provided by the application;

[0055] Figure 8 is a structural schematic diagram of a second bearing surface provided by an embodiment of the application;

[0056] Figure 9 is a structural schematic diagram of a third bearing mechanism provided by an embodiment of the application;

[0057] Figure 10 is a structural schematic diagram of a movable retaining wall provided by an embodiment of the application;

[0058] Figure 11 is a structural schematic diagram of a third bearing surface provided by an embodiment of the application;

[0059] Figure 12 is a structural schematic diagram of a second control module provided by an embodiment of the application;

[0060] Figure 13 is a structural schematic diagram of a visual positioning mechanism provided by an embodiment of the application;

[0061] Figure 14 is a structural schematic diagram of another visual positioning mechanism provided by an embodiment of the application;

[0062] Figure 15 is a schematic diagram of placement of a curved backlight module provided by an embodiment of the application;

[0063] Figure 16 is a step flowchart of a lamination method provided by an embodiment of the application.

[0064] Reference signs:

[0065] 1, device rack housing; 2, device operation panel; 3, first bearing mechanism; 4, third bearing mechanism; 5, second bearing mechanism; 6, display panel visual positioning mechanism; 7, backlight module visual positioning mechanism; 8, first bearing surface; 9, positioning portion; 10, positioning servo motor; 11, fourth bearing surface; 12, first photoelectric sensor; 13, first opening; 14, clamping jaw; 15, target curved display panel; 16, third bearing surface; 17, air cylinder clamp; 18, fourth servo motor; 19, second photoelectric sensor; 20, fifth servo motor; 21, direct drive motor; 22, second opening; 23, air cylinder device; 24, movable retaining wall; 25, curved backlight module; 26, second bearing surface; 27, first servo motor; 28, second servo motor; 29, third servo motor; 30, vacuum hole; 31, circuit structure suction nozzle; 32, display panel visual sensor; 33, sixth servo motor; 34, backlight module visual sensor; 35, seventh servo motor; 36, eighth servo motor. DETAILED DESCRIPTION

[0066] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0067] The embodiments of the present application will be described below with reference to the drawings of the specification:

[0068] Referring to Figure 1 , Figure 1 is a schematic diagram of an external shape of a bonding device provided by an embodiment of the present application. As shown in Figure 1 , the present application provides a bonding device for bonding a display panel to be processed and a curved backlight module 25.

[0069] The display panel to be processed can be a liquid crystal display panel (LCD) to be processed. The display panel to be processed can include a flat display panel to be processed or a curved display panel to be processed. The curvature of the curved display panel to be processed can be different from a target curvature. For example, if the curvature of the display panel to be processed is 2°, in order to bond the curved backlight module 25, the target curvature can be 10°.

[0070] As shown in Figure 1 , the bonding device can further include a device rack shell 1 and a device operation panel 2 at the user interaction level. The device operation panel 2 can be used to receive an interactive control signal and input an artificial instruction to the control structure.

[0071] Referring to Figure 2 , Figure 2 is a schematic diagram of an external structure of a bonding device provided by an embodiment of the present application. Referring to Figure 3 , Figure 3 is a schematic diagram of an internal structure of a bonding device provided by an embodiment of the present application. As shown in Figure 2 and Figure 3 , the bonding device includes a first bearing mechanism 3, a positioning part 9, a second bearing mechanism 5, and a control mechanism (not shown in the figure).

[0072] The first bearing mechanism 3 includes a first bearing surface 8, and the first bearing surface 8 is curved and has the same curvature as the target curvature of the display panel to be processed.

[0073] In an optional embodiment, the curvature of the first bearing surface 8 can be the same as the target curvature of the side surface of the display panel to be processed for bonding the curved backlight module 25. In a scenario where the bonding accuracy is not high, the thickness of the display panel can be ignored, which causes the curvature of the two side surfaces to be ignored.

[0074] The side surface of the display panel to be processed for attaching the curved backlight module 25 is the light entrance surface of the display panel, and the opposite side surface of the side of the display panel to be processed for attaching the curved backlight module 25 is the light exit surface of the display panel, which can be further used for attaching a touch protection substrate or a protection substrate, such as a protection glass.

[0075] In order to facilitate the fixing and processing of the display panel to be processed on the first bearing surface 8, and to meet the requirement that the light exit surface of the display module is concave, the first bearing surface 8 can be concave, and the first bearing surface 8 can also be horizontally arranged, that is, the normal line of the first bearing surface 8 is arranged along the direction of the gravitational acceleration.

[0076] The positioning part 9 is located on the side surface of the first bearing surface 8, and is used to move the display panel to be processed and fix the display panel to be processed at a predetermined position on the first bearing surface 8.

[0077] The predetermined position is the processing position of the display panel to be processed relative to the first bearing surface 8. For example, it can be the position where the center of the display panel to be processed is vertically opposite to the center of the first bearing surface 8, so as to facilitate the processing of bending.

[0078] Specifically, the positioning part 9 can include at least two pairs of clamps arranged on the side surface of the first bearing surface 8 relative to the horizontal plane. The clamps can be driven by a servo stepping device.

[0079] The taking structure can horizontally place the display panel to be processed above the first bearing surface 8 in advance, and then drive the display panel to be processed to move along the horizontal plane by any one of the clamps on the opposite side of the positioning part 9, so as to finally fix the display panel to be processed at the predetermined position on the first bearing surface 8. The fixed display panel to be processed cannot move on the horizontal plane above the first bearing surface 8.

[0080] The second bearing mechanism 5 includes a second bearing surface 26 arranged parallel to the first bearing surface 8 above the first bearing surface 8. The second bearing surface 26 is curved and has the same curvature as the target curvature of the display panel to be processed.

[0081] In order to realize accurate attachment, optionally, the curvature of the second bearing surface 26 is the same as the target curvature of the opposite side surface of the side of the display panel to be processed for attaching the curved backlight module 25.

[0082] Optionally, the second bearing mechanism 5 can include a mechanical arm. The control mechanism can control the mechanical arm to provide downward pressure on the display panel to be processed above the first bearing surface 8 by a servo motor control device, so that the display panel to be processed located between the first bearing surface 8 and the second bearing surface 26 is bent into a target curved display panel 15.

[0083] Further, in an optional embodiment, considering that the material plasticity of different display panels is different, to prevent some display panels from being broken during the bending process, a heating device can be further provided to heat the display panel during the process of bending the display panel to be processed into the target curved display panel 15, so as to improve the plasticity of the display panel.

[0084] To facilitate the second bearing mechanism 5 to fix the display panel to be processed through the second bearing surface 26, the concave-convex shapes of the first bearing surface 8 and the second bearing surface 26 can be oppositely arranged. Alternatively, the second bearing surface 26 can be convex. The second bearing surface 26 can also be horizontally arranged, i.e., the normal line of the second bearing surface 26 is arranged along the direction of the gravitational acceleration.

[0085] The control mechanism is configured to control the first bearing mechanism 3 and / or the second bearing mechanism 5 to move, so as to make the first bearing surface 8 and the second bearing surface 26 close to each other, so that the display panel located between the first bearing surface 8 and the second bearing surface 26 is bent into the target curved display panel 15. The control mechanism is further configured to control the target curved display panel 15 to be fixed on the second bearing surface 26, and control the first bearing mechanism 3 and / or the second bearing mechanism 5 to move, so as to make the target curved display panel 15 away from the first bearing surface 8, so as to make the target curved display panel 15 fit the curved backlight module 25.

[0086] The target curved display panel 15 is a display panel with a target curvature.

[0087] Specifically, since the concave-convex shapes of the first bearing surface 8 and the second bearing surface 26 are oppositely arranged, and the curvatures of the first bearing surface 8 and the second bearing surface 26 are the same as the target curvature of the display panel to be processed, the control mechanism can make the flat or curved display panel to be processed reach the target curvature under the pressure between the first bearing surface 8 and the second bearing surface 26, so as to obtain the target curved display panel 15. Specifically, the first bearing mechanism 3 can be controlled to move upward, and the second bearing mechanism 5 can be controlled to be fixed. The first bearing mechanism 3 can be controlled to be fixed, and the second bearing mechanism 5 can be controlled to move downward. The first bearing mechanism 3 can be controlled to move upward, and the second bearing mechanism 5 can be controlled to move downward.

[0088] For example, if the curvature of the display panel to be processed is 2°, and the curvatures of the first bearing surface 8 and the second bearing surface 26 are 10°, i.e., the target curvature is 10°, the target curved display panel 15 with a curvature of 10° can be obtained through bending.

[0089] The above embodiment provides a fitting device, the second bearing mechanism 5 is used as the device for bending the display panel, and is also used as the shape fixing device and the carrying device of the curved display panel, and is also used as the fitting device of the curved display panel and the curved backlight module 25. The display panel can reach the target curvature, and then is fitted with the curved backlight module 25. The automatic curved fitting of the display panel and the curved backlight module 25 is realized, and the curved fitting efficiency is improved. Meanwhile, the second bearing mechanism 5 can be used as the grabbing device, and can fix the shape of the curved display panel in the process of moving and fitting the curved backlight module 25, that is, the curvature of the curved display panel is kept, and the yield of fitting success is improved.

[0090] With reference to Figure 4 , Figure 4 is a structural schematic diagram of a first bearing mechanism 3 provided by an embodiment of the present application. As shown in Figure 4 , considering that the liquid crystal display panel is a flexible material, there is air stagnation between the first bearing surface 8 during bending, which affects the bending effect and even damages the display panel. Therefore, in an optional implementation, the present application further provides a first bearing mechanism 3, wherein a plurality of through holes are arranged on the first bearing surface 8, which are used to discharge the air between the display panel to be processed and the first bearing surface 8 during bending the display panel to be processed.

[0091] Optionally, the first bearing mechanism 3 can further include a fourth bearing surface 11 for placing a printed circuit board (PCB) of a side edge of the display panel.

[0092] The first bearing surface 8 can be a metal material, for example, an aluminum alloy material or a stainless steel material.

[0093] The plurality of through holes can be arranged in a matrix on the first bearing surface 8, and the through hole interface can be circular.

[0094] Optionally, the first bearing surface 8 can be a curved rectangle corresponding to the conventional rectangle of the display panel.

[0095] Optionally, the side of the first bearing surface 8 can be further provided with a fixed baffle for aligning and fixing the curved display panel obtained by bending from the side. As shown in the example, Figure 5 the fixed baffle can be arranged at the four corners of the first bearing surface 8.

[0096] With reference to Figure 5 , Figure 5 is a structural schematic diagram of a first bearing surface 8 provided by an embodiment of the present application. As shown in Figure 5As shown, in the case that no display panel to be processed is placed on the first bearing mechanism 3 of the device, the second bearing mechanism 5 is easily damaged by being pressed downward by air pressure, and therefore, in an alternative embodiment, the present application further provides a first bearing surface 8, which is provided with a first opening 13, and the first opening 13 is provided with a first photoelectric sensor 12, which is used to detect whether the display panel to be processed is placed on the first bearing surface 8.

[0097] The shape of the first opening 13 can be set according to the shape and sensing characteristics of the first photoelectric sensor 12. For example, the shape can be oval.

[0098] Referring to Figure 6 , Figure 6 is a structural schematic diagram of a positioning part 9 provided by an embodiment of the present application. As shown, Figure 6 In an alternative embodiment, the present application further provides a positioning part 9, which comprises:

[0099] The servo motor clamp comprises a plurality of oppositely arranged clamping jaws 14 and a positioning servo motor 10; the clamping jaws 14 are connected with the positioning servo motor 10 and are used to move towards each other or away from each other under the driving of the positioning servo motor 10 to clamp the display panel to be processed; the clamping jaws 14 are also used to move the display panel to be processed under the driving of the positioning servo motor 10 so that the center of the display panel to be processed coincides with the center of the first bearing surface 8.

[0100] The positioning part 9 can be connected with a visual sensor, and the position of the display panel to be processed on the first bearing surface 8 is automatically adjusted according to the visual positioning signal transmitted by the visual sensor, and the preset position is reached.

[0101] Referring to Figure 7 , Figure 7 is a schematic diagram of the display panel being placed. As shown, Figure 7 Considering that the bending direction of the display panel to be processed can be only one, i.e., only two sides can be bent, the first bearing surface 8 is also a curved surface with the corresponding two sides being bent. Alternatively, the clamping jaws 14 can be oppositely arranged on the two sides of the curved surface of the first bearing surface 8 which are not bent, i.e., the clamping jaws 14 can be moved towards each other in real time to tighten during the bending process of the display panel to be processed, which is used to assist in controlling the bending degree of the display panel to be processed and prevent the display panel to be processed from being deformed and moved unexpectedly during the bending process.

[0102] Specifically, the display panel to be processed can be placed on the first bearing surface 8 in a state that the light-entering surface faces downward and the light-emitting surface faces upward.

[0103] Referring to Figure 8 , Figure 8is a structural schematic view of a second bearing surface 26 provided by an embodiment of the present application. As shown in Figure 8 In an alternative implementation, the present application provides a second bearing surface 26, which is provided with a plurality of vacuum holes 30 for adsorbing and fixing the target curved display panel 15.

[0104] Each vacuum hole 30 is arranged on a vacuum suction nozzle, and the target curved display panel 15 is adsorbed and fixed by the vacuum suction nozzle through external pressure difference, thereby fixing the shape and grasping movement of the curved display panel.

[0105] Correspondingly, the fourth bearing surface 11 can also be provided with a circuit structure suction nozzle 31 for fixing the PCB of the display panel.

[0106] Referring to Figure 9 , Figure 9 is a structural schematic view of a third bearing mechanism 4 provided by an embodiment of the present application. As shown in Figure 9 In an alternative implementation, the present application provides a lamination device, which further comprises:

[0107] The third bearing mechanism 4 comprises a third bearing surface 16, which is curved and has the same curvature as the curved backlight module 25, and is used for fixing the curved backlight module 25.

[0108] The control mechanism is further used for controlling the movement of the second bearing mechanism 5 and / or the third bearing mechanism 4, so as to make the target curved display panel 15 close to and combine with the curved backlight module 25.

[0109] Referring to Figure 15 , Figure 15 is a schematic view of the placement of the curved backlight module 25. As shown in Figure 15 The curved backlight module 25 can be placed in the concave surface of the third bearing surface 16 in convex surface fitting, and the concave surface is prepared to be laminated with the convex surface of the display panel carried by the second bearing mechanism 5, i.e., the light emitting surface is laminated with the light entering surface of the display panel.

[0110] Specifically, the third bearing mechanism 4 can be controlled to move upward, and the second bearing mechanism 5 is fixed; the third bearing mechanism 4 can be controlled to be fixed, and the second bearing mechanism 5 can be controlled to move downward; the third bearing mechanism 4 can be controlled to move upward, and the second bearing mechanism 5 can be controlled to move downward.

[0111] Referring to Figure 10 , Figure 10is a structural schematic diagram of an activity retaining wall 24 provided by an embodiment of the present application. As shown in Figure 10 In order to keep the fixed position of the target curved display panel 15 and the curved backlight module 25 when they are attached, in an alternative embodiment, the present application further provides a third bearing mechanism 4, which further comprises: a plurality of retaining walls arranged around the third bearing surface 16, the plurality of retaining walls comprising: three fixed retaining walls and one activity retaining wall 24, the activity retaining wall 24 being connected with the air cylinder device 23, and being used to move under the driving of the air cylinder device 23 to clamp or release the curved backlight module 25.

[0112] In the above embodiment, the air cylinder device 23 can control the movement of the activity retaining wall 24 through the air cylinder clamp 17.

[0113] Referring to Figure 11 , Figure 11 is a structural schematic diagram of a third bearing surface 16 provided by an embodiment of the present application. As shown in Figure 11 In the case that the curved backlight module 25 is not placed on the third bearing mechanism 4 of the device, the second bearing mechanism 5 carrying the curved display panel is easily air-pressed downward, which can easily cause damage to the curved display panel or the device. Therefore, in an alternative embodiment, the present application further provides a third bearing surface 16, and the second bearing surface 16 is provided with a second opening 22, and the second opening 22 is provided with a second photoelectric sensor 19, which is used to detect whether the curved backlight module 25 is placed on the third bearing surface 16.

[0114] In the above embodiment, the shape of the second opening 22 can be set according to the shape and sensing characteristics of the second photoelectric sensor 19. For example, it can be rectangular.

[0115] Considering the accuracy of processing, for the mechanical arm of the second bearing mechanism 5, an embodiment of the present application can set a servo motor in each coordinate axis direction of the three-axis coordinate system, which is used to control the accurate movement of the second bearing mechanism 5, as shown in Figure 9 In an alternative embodiment, the present application further provides a control mechanism, which comprises: a first control module, the first control module comprising:

[0116] a first servo motor 27, which is used to drive the second bearing mechanism 5 to move in the first coordinate axis direction;

[0117] a second servo motor 28, which is used to drive the second bearing mechanism 5 to move in the second coordinate axis direction;

[0118] a third servo motor 29, which is used to drive the second bearing mechanism 5 to rotate in a plane perpendicular to the second coordinate axis.

[0119] Specifically, in the stage of bending the display panel, the first control module can be used to calculate a first displacement value of the second bearing mechanism 5 according to the current position coordinates of the first bearing surface 8 and the current position coordinates of the second bearing surface 26; according to the first displacement value, the second bearing mechanism 5 is first moved along the coordinate axis direction of the slide rail beam where the mechanical arm of the second bearing mechanism is located by the first servo motor 27, and then rotated in the plane perpendicular to the second coordinate axis by the third servo motor 29, so that the second bearing surface in the second bearing mechanism is accurately adjusted in the bending direction, and finally moved along the second coordinate axis direction to the display panel 15 to be processed downwards, and a pressure for bending the display panel 15 to be processed is applied. The first coordinate axis can correspond to the X axis in the horizontal plane, i.e., the direction where the mechanical arm beam of the second bearing mechanism is located; and the second coordinate axis can correspond to the Z axis perpendicular to the horizontal plane.

[0120] Specifically, in the stage of bonding the curved display panel and the curved backlight module 25, the first control module can be further used to calculate a second displacement value of the second bearing mechanism 5 according to the current position coordinates of the third bearing surface 16 and the current position coordinates of the second bearing surface 26; according to the second displacement value, the second bearing mechanism 5 is first moved along the coordinate axis direction of the slide rail beam where the mechanical arm of the second bearing mechanism is located by the first servo motor 27, and then rotated in the plane perpendicular to the second coordinate axis by the third servo motor 29, so that the second bearing surface in the second bearing mechanism is accurately adjusted in the angle, and then the bonding direction is aligned, and finally moved along the second coordinate axis direction to the curved backlight module 25 downwards, and a pressure for bonding is applied, so that the target curved display panel 15 and the curved backlight module 25 are close and combined.

[0121] Reference Figure 12 , Figure 12 is a structural schematic diagram of a second control module provided by the embodiment of the present application. As shown in Figure 12 , in the process of bonding the target curved display panel 15 and the curved backlight module 25, the third bearing mechanism 4 can be first moved and then kept stationary at a fixed position, and the vertical direction selects the cylinder device 23 to move the third bearing mechanism 4, which can reduce the processing cost. Therefore, in an optional implementation manner, the present application further provides a control mechanism, which comprises: a second control module, the second control module comprising:

[0122] a fourth servo motor 18, used to drive the third bearing mechanism 4 to move in the first coordinate axis direction;

[0123] a fifth servo motor 20, used to drive the third bearing mechanism 4 to move in the third coordinate axis direction;

[0124] The direct drive motor 21 is used to drive the third bearing mechanism 4 to rotate in a plane parallel to the first coordinate axis and the second coordinate axis.

[0125] The third coordinate axis can correspond to the Y axis on the horizontal plane, i.e., a direction perpendicular to the direction in which the mechanical arm beam of the second bearing mechanism is located on the horizontal plane.

[0126] Specifically, in the stage of attaching the target curved display panel and the curved backlight module 25, the second control module can be used to calculate a third displacement value of the third bearing mechanism 4 according to the current position coordinates of the third bearing surface 16 and the current position coordinates of the second bearing surface 26; according to the third displacement value, the third bearing mechanism 4 is first moved along the direction of the first coordinate axis in which the mechanical arm beam of the second bearing mechanism is located by the fourth servo motor 18; and the third bearing mechanism 4 is moved along the direction perpendicular to the third coordinate axis in which the mechanical arm beam of the second bearing mechanism is located by the fifth servo motor 20, so as to complete the movement of the horizontal plane; then the third bearing mechanism 4 is rotated to a preset angle in the plane parallel to the first coordinate axis and the second coordinate axis by the direct drive motor 21, so that the attachment angle of the two curved surfaces of the target curved display panel 15 and the curved backlight module 25 is consistent; finally, the target curved display panel 15 and the curved backlight module 25 are combined by moving close to the fixed position.

[0127] In addition, the control mechanism can further include a first angle control module for controlling the angle rotation of the second bearing mechanism 5. The control mechanism can further include a second angle control module for controlling the angle rotation of the third bearing mechanism 4.

[0128] Further, the first control module or the second control module can obtain the current positions of the target curved display panel 15 and the curved backlight module 25 through a visual positioning mechanism. For this purpose, in an alternative embodiment, the present application further provides a kind of attaching equipment, further comprising:

[0129] The visual positioning mechanism is used to obtain the current position of the target curved display panel 15 and the current position of the curved backlight module 25, so that the control mechanism controls the third bearing mechanism 4 and / or the second bearing mechanism 5 to move according to the current position of the target curved display panel 15 and the current position of the curved backlight module 25.

[0130] Specifically, the visual positioning mechanism can be signal connected with the first control module or the second control module, and the current position of the target curved display panel 15 and the current position of the curved backlight module 25 are transmitted by sending electrical signals to the first control module or the second control module.

[0131] Reference Figure 13 , Figure 13 is a structural schematic diagram of a visual positioning mechanism provided by the embodiment of the present application. As shown inFigure 13 As shown, in order to further save the use of sensors, the embodiments of the present application consider using a set of visual positioning devices with movable positions and angles to obtain the position of the target curved display panel 15. For this purpose, in an alternative embodiment, the present application also provides a visual positioning mechanism for serving as a display panel visual positioning mechanism, i.e., a display panel visual positioning mechanism 6, which comprises:

[0132] a first visual sensor, a second visual sensor, and a sixth servo motor 33; the first visual sensor and the second visual sensor are respectively fixed on two first lead screws with opposite screw directions, the two first lead screws are connected through a first coupling and connected with the third servo motor 29; the sixth servo motor 33 is used to drive the two first lead screws to rotate, so that the first visual sensor and the second visual sensor move towards or away from each other to a first shooting point position to obtain the current position of the target curved display panel 15.

[0133] The first visual sensor and the second visual sensor are used to obtain and transmit the visual signals of the target curved display panel 15, i.e., the first visual sensor and the second visual sensor are display panel visual sensors 32.

[0134] Specifically, the sixth servo motor 33 can receive a shooting control signal of the control structure to control the rotation of the first lead screw to move the first visual sensor and the second visual sensor to the shooting position of the corresponding target curved display panel 15, i.e., the first shooting point position.

[0135] To improve the accuracy, the first visual sensor and the second visual sensor can be charge coupled device (CCD) cameras.

[0136] Referring to Figure 14 , Figure 14 is a structural schematic diagram of another visual positioning mechanism provided by the embodiments of the present application. As shown, Figure 14 Similarly, in order to save the use of sensors, the embodiments of the present application consider using another set of visual positioning devices with movable positions and angles to obtain the position of the curved backlight module 25. For this purpose, in an alternative embodiment, the present application also provides a visual positioning mechanism for serving as a backlight module visual positioning mechanism, i.e., a backlight module visual positioning mechanism 7, which comprises:

[0137] a third visual sensor, a fourth visual sensor, a seventh servo motor 35, and an eighth servo motor 36; the third visual sensor and the fourth visual sensor are respectively fixed on two second lead screws with opposite screw directions, the two second lead screws are connected through a second coupling and connected with the seventh servo motor 35;

[0138] The seventh servo motor 35 is used to drive the rotation of the two second lead screws, so that the third visual sensor and the fourth visual sensor move towards or away from each other along the first coordinate axis direction in which the second lead screws are located;

[0139] The eighth servo motor 36 is used to drive the third visual sensor and the fourth visual sensor to move synchronously along the third coordinate axis direction of the slide rail;

[0140] The third visual sensor and the fourth visual sensor are used to obtain the current position of the curved backlight module 25 after moving to the second shooting point.

[0141] The third visual sensor and the fourth visual sensor are used to obtain and transmit the visual signals of the curved backlight module 25, that is, the third visual sensor and the fourth visual sensor are the backlight visual sensor 34.

[0142] Specifically, the seventh servo motor 35 and the eighth servo motor 36 can receive the shooting control signal of the control structure to control the rotation of the first lead screw to move the third visual sensor and the fourth visual sensor, and to move the third visual sensor and the fourth visual sensor along the slide rail to the shooting position of the corresponding curved backlight module 25 on the horizontal plane, that is, the second shooting point.

[0143] In order to tightly combine the display panel and the curved backlight module 25, in an optional embodiment, the display panel is provided with double-sided adhesive tape around the edge of the side surface that is attached to the curved backlight module 25; the double-sided adhesive tape is used to paste the target curved display panel 15 and the curved backlight module 25, so as to combine the target curved display panel 15 and the curved backlight module 25.

[0144] The double-sided adhesive tape can be pressure-sensitive adhesive, that is, under the pressure of the interaction between the target curved display panel 15 and the curved backlight module 25, the double-sided adhesive tape generates adhesion.

[0145] Further, the double-sided adhesive tape can also be heat-sensitive adhesive. Correspondingly, the attaching mechanism should have a heating function. The present application considers that a heating device is arranged on the second bearing mechanism 5. Therefore, in an optional embodiment, the present application further provides a second bearing mechanism 5, which further comprises:

[0146] The heating device is used to heat the double-sided adhesive tape during the process of attaching the target curved display panel 15 and the curved backlight module 25.

[0147] Specifically, the heating device in the embodiments of the present application can be the same heating device as the heating device for heating the display panel in the process of bending the display panel to be processed, and different heating temperatures can also be provided in different stages. For example, when the double-sided adhesive is heated in the process of bonding the target curved display panel 15 and the curved backlight module 25, a heating temperature of 80°C can be provided; in the process of bending the display panel to be processed, a heating temperature of 50°C can be provided.

[0148] Through the above embodiments, an integrated bonding device is provided, in which the second bearing mechanism 5 serves as a display panel processing device, a shape fixing device, a carrying device, and a bonding device with the curved backlight module 25 in sequence. In the integrated device, the combination of the flat display panel or the display panel with substandard curvature and the curved backlight module 25 can be quickly realized, and the curved display module can be quickly obtained, thereby improving the bonding yield, bonding efficiency, and product accuracy of the display panel and the curved backlight module 25.

[0149] Reference Figure 16 , Figure 16 is a step flowchart of a bonding method provided by the embodiments of the present application. As Figure 16 shown, in combination with the above embodiments, based on similar inventive concepts, the embodiments of the present application also provide a bonding method, which comprises:

[0150] Step S301, providing a display panel to be processed;

[0151] Step S302, using the bonding device of any one of the above embodiments to bend the display panel to be processed to obtain a target curved display panel 15 with a target curvature, and bond the target curved display panel 15 and the curved backlight module 25 to obtain a display module.

[0152] Among them, the side surface of the target curved display panel 15 for bonding with the curved backlight module 25, i.e., the light entrance surface of the target curved display panel 15, can be a convex surface; correspondingly, the side surface of the curved backlight module 25 for bonding with the target curved display panel 15, i.e., the light exit surface of the curved backlight module 25, can be a concave surface.

[0153] The surfaces of the display panel to be processed and the curved backlight module 25 can be pre-set with alignment marks, such as cross alignment marks. The target curved display panel 15 and the curved backlight module 25 can be bonded based on the alignment marks of the display panel to be processed and the alignment marks of the curved backlight module 25 to achieve high-precision curved bonding.

[0154] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0155] Finally, it should be noted that the terms "first" and "second", and the like, herein do not denote any order, quantity, combination or importance, but are used to identify one element from another, and do not imply referring to a certain number or a certain order. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an indefinite article "a" or "an" does not exclude the existence, under the same conditions, of two or more identical elements.

[0156] The above describes in detail a fitting device and a fitting method provided by the present application. The principles and implementation manners of the present application are described by using specific examples in the present application. The above example is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges can be changed. In summary, the content of the present application should not be understood as a limitation of the present application.

[0157] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present application cover any and all variations of the application that come within the scope of the present application along with its general principles and features. This specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0158] It is to be understood that the application is not limited to the precise construction herein described and as shown in the attached drawings, and that various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

[0159] As used herein, the terms "one embodiment", "an embodiment", or "one or more embodiments” mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0160] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

[0161] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unitary claim, several devices or sub-claims can be joined by means of the word 'or'. The word 'first','second', 'third', etc. do not imply any order. The terms 'first','second', 'third', etc. are to be interpreted according to their meaning in the context and not numerically.

[0162] Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the application, since the scope of the application is determined by the appended claims.

Claims

1. An application device characterized by comprising: The application discloses a display panel and a curved backlight module, and relates to the technical field of display panel processing. The first bearing mechanism comprises a first bearing surface which is curved and has the same curvature as the target curvature of the display panel to be processed. The positioning part is arranged on the side of the first bearing surface and is used for moving the display panel to be processed and fixing the display panel to be processed at a preset position on the first bearing surface. The second bearing mechanism comprises a second bearing surface which is arranged above the first bearing surface in parallel and is curved and has the same curvature as the target curvature of the display panel to be processed. The third bearing mechanism comprises a third bearing surface which is curved and has the same curvature as the curvature of the curved backlight module and is used for fixing the curved backlight module. The control mechanism is used for controlling the first bearing mechanism and / or the second bearing mechanism to move so as to make the first bearing surface and the second bearing surface close to each other, so that the display panel to be processed between the first bearing surface and the second bearing surface is curved into a target curved display panel. The control mechanism is also used for controlling the target curved display panel to be fixed on the second bearing surface and controlling the first bearing mechanism and / or the second bearing mechanism to move so as to make the target curved display panel move away from the first bearing surface, so as to make the target curved display panel and the curved backlight module close to each other and combine. The target curved display panel has the target curvature.

2. The apparatus of claim 1, wherein The control mechanism is also used for controlling the second bearing mechanism and / or the third bearing mechanism to move so as to make the target curved display panel and the curved backlight module close to each other and combine.

3. The apparatus of claim 1, wherein The first bearing surface is provided with at least one through hole which is used for discharging the gas between the display panel to be processed and the first bearing surface during the process of curving the display panel to be processed.

4. The apparatus of claim 1, wherein The first bearing surface is provided with a first opening hole, and a first photoelectric sensor is arranged in the first opening hole and is used for detecting whether the display panel to be processed is placed on the first bearing surface. The positioning part comprises:

5. The apparatus of claim 1, wherein The servo motor clamp comprises a plurality of oppositely arranged clamping jaws and a positioning servo motor.

6. The apparatus of claim 1, wherein The clamping jaws are connected with the positioning servo motor and are used for moving towards each other or moving away from each other under the driving of the positioning servo motor, so as to clamp the display panel to be processed. The clamping jaws are also used for moving the display panel to be processed under the driving of the positioning servo motor, so that the center of the display panel to be processed coincides with the center of the first bearing surface. The second bearing surface is provided with at least one vacuum hole which is used for adsorbing and fixing the target curved display panel. The third bearing mechanism further comprises a plurality of retaining walls which are arranged around the third bearing surface. The plurality of retaining walls comprise three fixed retaining walls and one movable retaining wall. The movable retaining wall is connected with a pneumatic cylinder device and is used for moving under the driving of the pneumatic cylinder device, so as to clamp or release the curved backlight module.

7. The apparatus of claim 1, wherein The third bearing surface is provided with a second opening, and a second photoelectric sensor is arranged in the second opening, and is used for detecting whether the curved backlight module is placed on the third bearing surface.

8. The apparatus of claim 1, wherein, The control mechanism comprises a first control module, and the first control module comprises: a first servo motor, which is used to drive the second bearing mechanism to move in the direction of the first coordinate axis; a second servo motor, which is used to drive the second bearing mechanism to move in the direction of the second coordinate axis; a third servo motor, which is used to drive the second bearing mechanism to rotate in a plane perpendicular to the second coordinate axis.

9. The apparatus of claim 1, wherein, The control mechanism comprises a second control module, and the second control module comprises: a fourth servo motor, which is used to drive the third bearing mechanism to move in the direction of the first coordinate axis; a fifth servo motor, which is used to drive the third bearing mechanism to move in the direction of the third coordinate axis; a direct drive motor, which is used to drive the third bearing mechanism to rotate in a plane parallel to the first coordinate axis and the second coordinate axis.

10. The apparatus of claim 1, wherein The laminating device further comprises: a visual positioning mechanism, which is used to obtain the current position of the target curved display panel and the current position of the curved backlight module, so that the control mechanism controls the third bearing mechanism and / or the second bearing mechanism to move according to the current position of the target curved display panel and the current position of the curved backlight module.

11. The apparatus of claim 10, wherein The visual positioning mechanism comprises: a first visual sensor, a second visual sensor and a sixth servo motor; the first visual sensor and the second visual sensor are respectively fixed on two first screws with opposite screw directions, the two first screws are connected through a first coupling and are connected with the sixth servo motor; the sixth servo motor is used to drive the two first screws to rotate, so that the first visual sensor and the second visual sensor move towards or away from each other to a first photographing point, so as to obtain the current position of the target curved display panel.

12. The apparatus of claim 10, wherein, The visual positioning mechanism comprises: a third visual sensor, a fourth visual sensor, a seventh servo motor and an eighth servo motor; the third visual sensor and the fourth visual sensor are respectively fixed on two second screws with opposite screw directions, the two second screws are connected through a second coupling and are connected with the seventh servo motor; the seventh servo motor is used to drive the two second screws to rotate, so that the third visual sensor and the fourth visual sensor move towards or away from each other along the direction of the first coordinate axis in which the second screws are located; the eighth servo motor is used to drive the third visual sensor and the fourth visual sensor to move synchronously along the slide rail in the direction of the third coordinate axis; the third visual sensor and the fourth visual sensor are used to obtain the current position of the curved backlight module after moving to a second photographing point.

13. The apparatus of claim 6, wherein, The display panel is provided with double-sided adhesive tape around the edge of the side surface which is laminated with the curved backlight module; the double-sided adhesive tape is used to paste the target curved display panel and the curved backlight module, so that the target curved display panel is combined with the curved backlight module.

14. The apparatus of claim 13, wherein, The second bearing mechanism further comprises: A heating device is arranged to heat the double-sided adhesive tape during the process of bonding the target curved display panel with the curved backlight module.

15. A method of bonding, characterized by The bonding method comprises: providing a display panel to be processed; bonding the target curved display panel with the curved backlight module to obtain a display module, by using the bonding device according to any one of claims 1 to 14 to bend the display panel to be processed to obtain a target curved display panel with a target curvature.

Images