Conductive film, display module and attaching equipment

Abstract

The invention provides a conductive film, a display module and attaching equipment, and solves the problem of poor combination effect of a conductive film and a curved surface area of a display panel in the prior art. The conductive film provided by the invention comprises a first part and two second parts, wherein the two second parts are positioned on two sides of the first part in a first direction; the second part is provided with at least one pre-folding line extending in the second direction, and the first direction intersects with the second direction. The parts, on the two sides of each pre-folding line, of the conductive film can be bent at a certain angle at the pre-folding line, so that the gap between the second part and the curved surface area of the display panel is reduced, the second part is more easily attached to the curved surface area, and the combination effect of the conductive film and the display panel is improved.

Description

Technical Field

[0001] This invention relates to display panels, and more specifically to a conductive film, a display module, and an attachment device. Background Technology

[0002] In pursuit of a higher screen-to-body ratio, some OLED panels are designed as display panels with curved areas on both sides to increase the display area.

[0003] The backlight surface of a display panel needs to be covered with a conductive film, such as SCF (surface-conductive film). Compared to flat display panels, the conductive film attached to the backlight surface of a display panel has a poorer bonding effect with curved areas, making it difficult to effectively activate the conductive film in curved areas. Summary of the Invention

[0004] In view of this, embodiments of the present invention aim to provide a conductive film, a display module, and an attachment device.

[0005] In a first aspect, the present invention provides a conductive film comprising: a first portion and two second portions, the two second portions being located on both sides of the first portion in a first direction; wherein the second portion has at least one pre-folded line extending along a second direction, the first direction intersecting the second direction.

[0006] In one embodiment, the pre-broken line is located at least at the junction of the second part and the first part.

[0007] In one embodiment, each second section includes multiple pre-broken lines.

[0008] In one embodiment, the distance between two adjacent pre-broken lines within each second section is the same.

[0009] In a second aspect, the present invention provides a display module, comprising: a display panel including a light-emitting surface and a backlight surface disposed opposite to each other, the display panel including a planar region and two curved regions, the two curved regions being located on both sides of the planar region in a first direction, the two curved regions being symmetrically disposed along a second direction and both curving toward the backlight surface of the display panel; the aforementioned conductive film being attached to the backlight surface of the display panel, the first part corresponding to the planar region and the second part corresponding to the curved region.

[0010] In a third aspect, the present invention provides an attachment apparatus for attaching the aforementioned conductive film to a display panel in the aforementioned display module, comprising: an attachment mechanism including a first attachment roller and a second attachment roller, wherein the axis of the first attachment roller and the axis of the second attachment roller are both arranged along a second direction; wherein the display panel includes a light-emitting surface and a backlight surface arranged opposite to each other, and the first attachment roller and the second attachment roller are configured to simultaneously approach or move away from each other along the first direction to roll the conductive film, thereby attaching the conductive film to the backlight surface of the display panel.

[0011] In one embodiment, the bonding mechanism further includes: a first arm, the end of the first arm near the first bonding roller having a first support, the first bonding roller being rotatably connected to the first support; a second arm, the end of the second arm near the first bonding roller having a second support, the second bonding roller being rotatably connected to the second support; and a driving assembly configured to simultaneously drive the first arm and the second arm to move closer to each other or further away from each other.

[0012] In one embodiment, the drive assembly includes: a fixed frame, including a first end and a second end disposed opposite to each other, a first arm having one end away from the first attachment roller hinged to the first end of the fixed frame, and a second arm having one end away from the second attachment roller hinged to the second end of the fixed frame; and a drive rod, the drive rod being disposed perpendicular to the fixed frame, one end of the drive rod extending beyond the fixed frame and connected to a first link and a second link respectively, the other end of the first link being hinged to the first arm, and the other end of the second link being hinged to the second arm.

[0013] In one embodiment, the vertical distance between the hinge point of the first arm and the fixed frame and the drive rod is d1, and the vertical distance between the hinge point of the second arm and the fixed frame and the drive rod is d2, where d1 equals d2; the length of the first link is equal to the length of the second link, and the length of the first arm is equal to the length of the second arm.

[0014] In one embodiment, the curvature of the first attachment roller is the same as that of the second attachment roller, and the curvature of the first attachment roller is greater than the curvature of any point in the curved surface region.

[0015] Compared with the prior art, the embodiments of the present invention have at least the following advantages: The conductive film provided by this invention includes a first portion and two second portions, with the two second portions located on both sides of the first portion in a first direction. Each second portion has at least one pre-fold line extending along a second direction, where the first and second directions intersect. The portion of the conductive film on both sides of each pre-fold line is bent at a certain angle at the pre-fold line. This helps to reduce the gap between the second portion and the curved area of ​​the display panel, making it easier for the second portion to adhere to the curved area and improving the bonding effect between the conductive film and the display panel. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic diagram of a display module provided by at least one embodiment of the present invention before the conductive film is attached to the display panel.

[0017] Figure 2 The diagram shown is a schematic diagram of a display module provided in at least one embodiment of the present invention before the conductive film is attached to the display panel.

[0018] Figure 3 The diagram shown is a schematic diagram of a display module provided by at least one embodiment of the present invention before the conductive film is attached to the display panel.

[0019] Figure 4 The image shown is a cross-sectional view of a portion of the structure in the attachment device provided in at least one embodiment of the present invention.

[0020] Figure 5 The figure shown is a plan view of a portion of the structure of the attachment device provided in at least one embodiment of the present invention.

[0021] Figure 6 The diagram shown is a schematic diagram of a bonding mechanism in a first state according to at least one embodiment of the present invention.

[0022] Figure 7 The diagram shown is a schematic diagram of a bonding mechanism in a second state according to at least one embodiment of the present invention.

[0023] Figure 8 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a first state.

[0024] Figure 9 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a second state.

[0025] Figure 10 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a first state.

[0026] Figure 11 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a second state.

[0027] Figure 12 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a first state.

[0028] Figure 13 The diagram shown is a schematic diagram of another bonding mechanism provided by at least one embodiment of the present invention in a second state.

[0029] Figure 14 The image shown is another cross-sectional view of a portion of the structure in the attachment device provided in at least one embodiment of the present invention.

[0030] Figure 15 The diagram shows a flowchart of a conductive film attachment method for a display module according to at least one embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures: 1. Display panel; 11. Flat area; 12. Curved area; 2. Conductive film; 21. First part; 22. Second part; 3. Support assembly; 31. First section; 32. Second section; 41. First attaching roller; 42. Second attaching roller; 43. First support arm; 431. First support; 44. Second support arm; 441. Second support; 45. Fixing frame; 46. Drive rod; 461. Blocking part; 47. First connecting rod; 48. Second connecting rod; 49. Elastic reset element; 410. Mounting plate; 411. Pressure spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. It should be noted that, unless otherwise specified, different features in the embodiments of this application can be combined with each other.

[0035] For ease of understanding, the accompanying diagram shows the mutually orthogonal X-axis, Y-axis, and Z-axis. The direction along the X-axis is referred to as the X-direction (also called the first direction), the direction along the Y-axis is referred to as the Y-direction (also called the second direction), and the direction along the Z-axis is referred to as the Z-direction. The Z-direction is the normal direction relative to the plane encompassing the X and Y directions. Furthermore, a view where various elements are observed parallel to the plane encompassing the X and Y directions is called a top view. Alternatively, the planes in the X and Y directions can be planes parallel to the display surface of the display panel, and the Z-direction can be a direction parallel to the thickness direction of the display panel.

[0036] For certain elements, terms like "above" or "overhead" are sometimes used when describing the position of an element in the Z direction, and "below" or "under" are used when describing the position of an element in the opposite direction. Furthermore, when using terms like "above," "overhead," "below," "under," or "relative" to define the positional relationship between two elements, this includes not only the state where the two elements are directly adjacent, but also the state where the two elements are separated by gaps or other elements. Additionally, terms like "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0037] The display panel has a light-emitting surface and a backlight surface, and the cross-section of the display panel is the same in the Y direction. The display panel includes a planar area and two curved areas, which are located on both sides of the planar area in the X direction. The two curved areas are symmetrically arranged in the Y direction and both curve towards the backlight surface of the display panel.

[0038] In the process of assembling a display module based on a display panel, conductive films, such as SCF (surface-conductive film), need to be attached to the back of the display panel. Currently, the process of attaching conductive films to the backlight side of the display panel includes: placing the conductive film to be attached on the backlight side of the display panel, and then using an attachment roller to roll the conductive film to attach it to the backlight side of the display panel.

[0039] However, in current display panels, the conductive film has weak adhesion to curved areas, which can easily lead to activation failures.

[0040] Based on this, at least one embodiment of the present invention provides a conductive film, comprising: a first portion and two second portions, the two second portions being located on both sides of the first portion in a first direction; wherein, the second portion has at least one pre-fold line extending along a second direction, the first direction intersecting the second direction.

[0041] The conductive film, display module, and bonding device provided by the present invention will be described below with reference to some specific embodiments.

[0042] refer to Figure 1The display module includes a display panel 1 and a conductive film 2. The display panel 1 includes a light-emitting surface and a backlight surface arranged opposite each other, and the cross-sections of the display panel 1 in the Y direction are identical. The display panel 1 includes a planar region 11 and two curved regions 12, located on both sides of the planar region 11 in the X direction. The two curved regions 12 are symmetrically arranged along the Y direction and both curve towards the backlight surface of the display panel 1. The conductive film 2 is attached to the backlight surface of the display panel 1. The conductive film 2 includes a first portion 21 and two second portions 22, located on both sides of the first portion 21 in the first direction (i.e., the X direction). When the conductive film 2 is attached to the backlight surface of the display panel 1, the first portion 21 corresponds to the planar region 11, and the second portions 22 correspond to the curved regions 12. The conductive film 2 attached to the backlight surface of the display panel 1 can be an SCF (surface-conductive film).

[0043] refer to Figure 1 The second part 22 has at least one pre-fold line 20 extending along the second direction (i.e., the Y direction). The portions on both sides of each pre-fold line 20 are bent at a certain angle at the pre-fold line 20, which helps to reduce the gap between the second part 22 of the conductive film 2 and the curved area 12, making it easier for the conductive film 2 to adhere to the curved area 12 and reducing the difficulty of attaching the second part 22 of the conductive film 2 to the curved area 12.

[0044] For example, refer to Figure 1 The pre-broken line 20 is located at least at the boundary between the second part 22 and the first part 21. That is, the pre-broken line 20 is preferentially located at the boundary between the second part 22 and the first part 21; if there is only one pre-broken line 20, it is located at the boundary between the second part 22 and the first part 21; if there are multiple pre-broken lines 20, one of them is located at the boundary between the second part 22 and the first part 21. The remaining pre-broken lines 20 are distributed in other areas of the second part 22.

[0045] For example, refer to Figure 2 Each second part 22 includes multiple pre-fold lines 20. It can be understood that the more pre-fold lines 20 are located in the second part 22, the more flat surfaces the second part 22 has before being rolled, and the smaller the maximum distance between the second part 22 and the curved area 12. That is, the second part 22 is more closely attached to the curved area 12 before being rolled, and the second part 22 is easier to attach to the curved area 12, reducing the difficulty of attaching the second part 22 of the conductive film 2 to the curved area 12.

[0046] For example, the distance between two adjacent pre-broken lines 20 within each second part 22 is the same, so as to control the specific position of the pre-broken line 20.

[0047] For example, refer to Figure 3 Multiple pre-fold lines 20 divide the second part 22 into multiple sub-regions. Before the conductive film 2 is attached to the display panel 1, there is a gap between the second part 22 and the curved area 12. The angle between the sub-region furthest from the first part 21 and the first part 21 is A, and the maximum bending angle of the curved area 12 is B, where angle A is less than angle B. This ensures that the sub-region furthest from the first part 21 will not curl back, and during the rolling attachment process, the sub-region furthest from the first part 21 will not fold due to compression, ensuring that the second part 22 can completely fit with the curved area 12. It should be noted that angle A is the angle between the plane containing the sub-region furthest from the first part 21 and the plane containing the first part 21, and angle B is the angle between the end face of the curved area 12 furthest from the flat area 11 and the flat area 11.

[0048] The bonding equipment is used to attach the conductive film 2 from the display panel to the backlight surface of the display panel 1. The bonding equipment includes a bonding mechanism located on the backlight surface of the display panel 1, which is used to roll the conductive film 2 attached to the backlight surface of the display panel 1.

[0049] refer to Figure 4 and Figure 5 The bonding mechanism includes a first bonding roller 41 and a second bonding roller 42, which are parallel and both have their axes aligned along the Y direction. The first bonding roller 41 and the second bonding roller 42 are configured to simultaneously approach or move away from each other along the X direction, thereby rolling and bonding the conductive film 2 within the planar region 11 and the curved region 12. Specifically, the first bonding roller 41 and the second bonding roller 42 can roll and bond the conductive film 2 located in the two curved regions 12 simultaneously, i.e., when the first bonding roller 41 rolls the conductive film 2 in one curved region 12, the second bonding roller 42 simultaneously rolls the conductive film 2 in the other curved region 12. For example, the height at which the first bonding roller 41 rolls the conductive film 2 in the corresponding curved region 12 is the same as the height at which the second bonding roller 42 rolls the conductive film 2 in the corresponding curved region 12.

[0050] During the rolling process of the conductive film 2 attached to the backlight surface of the display panel 1 using the first attaching roller 41 and the second attaching roller 42 in the bonding mechanism, the force applied by the first attaching roller 41 in the X direction to the corresponding curved area 12 is F1, and the force applied by the second attaching roller 42 in the X direction to the corresponding curved area 12 is F2. The forces F1 and F2 are in opposite directions and can cancel each other out, thereby ensuring the stability of the display panel 1 during the rolling process of the conductive film 2. At the same time, since the display panel 1 can remain stable during the rolling process of the conductive film 2, the rolling force applied by the first attaching roller 41 and the second attaching roller 42 in the corresponding curved area 12 can be increased to a certain extent, thereby improving the bonding force between the conductive film 2 and the curved area 12 and effectively activating the conductive film 2 in the curved area 12.

[0051] The first attaching roller 41 and the second attaching roller 42 can be driven by different driving components to ensure that the first attaching roller 41 and the second attaching roller 42 can move closer or further away synchronously to roll the conductive film 2 located on the backlight surface of the display panel 1. Of course, the first attaching roller 41 and the second attaching roller 42 can also be driven simultaneously by the same mechanism to reduce the number of driving components.

[0052] For example, the curvature of the first attaching roller 41 is the same as that of the second attaching roller 42. The curvature of the first attaching roller 41 is greater than the curvature of any point in the curved area 12. This ensures that the first attaching roller 41 will not interfere with the curved area 12 during the process of attaching the conductive film 2. At this time, the first attaching roller 41 and the second attaching roller 42 can form a rolling contact with any point in the curved area 12, thereby improving the reliability of rolling attachment of the conductive film 2.

[0053] For example, refer to Figure 6 and Figure 7 The bonding mechanism also includes a first arm 43, a second arm 44, and a drive assembly. The first arm 43 has a first support 431 at its end near the first bonding roller 41, and the first bonding roller 41 is rotatably connected to the first support 431. The second arm 44 has a second support 441 at its end near the second bonding roller 42, and the second bonding roller 42 is rotatably connected to the second support 441. The drive assembly is configured to simultaneously drive the first arm and the second arm to move closer or further apart, so that the first bonding roller 41 and the second bonding roller 42 can simultaneously move closer or further apart, thereby synchronously completing the bonding of the first portion 21 and the two second portions 22 of the conductive film 2.

[0054] There are various configurations for the drive components. For example, two sets of telescopic drive components (such as cylinders) can be used to drive the first arm 43 and the second arm 44 respectively, or a single drive component can be used to drive the first arm 43 and the second arm 44 simultaneously through a linkage structure.

[0055] As an example, the drive assembly includes a mounting frame 45 and a drive rod 46. The mounting frame 45 has a first end and a second end opposite to each other. A first arm 43 is hinged to the first end of the mounting frame 45 at the end opposite to the first attachment roller 41, and a second arm 44 is hinged to the second end of the mounting frame 45 at the end opposite to the second attachment roller 42. The drive rod 46 is arranged perpendicular to the mounting frame 45, with the end of the drive rod 46 near the display panel 1 extending beyond the mounting frame and connected (e.g., hinged) to a first link 47 and a second link 48, respectively. The end of the first link 47 opposite to the drive rod 46 is hinged to the first arm 43, and the end of the second link 48 opposite to the drive rod 46 is hinged to the second arm 44. For example, the drive rod 46 extends in the Z direction.

[0056] As the drive rod 46 approaches the display panel 1 along the Z-direction, it drives the first connecting rod 47 and the second connecting rod 48 to move, which in turn drives the first arm 43 and the second arm 44 to rotate relative to the fixed frame 45, causing the first arm 43 and the second arm 44 to close or open synchronously. At this time, only one drive element is needed to drive the drive rod 46 to reciprocate along the Z-direction, which can drive the first arm 43 and the second arm 44 to open or close synchronously. When the first arm 43 and the second arm 44 open synchronously, the first attaching roller 41 and the second attaching roller 42 move away synchronously. When the first arm 43 and the second arm 44 close synchronously, the first attaching roller 41 and the second attaching roller 42 move closer synchronously.

[0057] For example, the drive rod 46 passes through the fixed frame 45 and can move relative to the fixed frame 45 in the Z direction. In this case, the fixed frame 45 limits the movement direction of the drive rod 46. Of course, if the fixed frame 45 is fixed, the drive rod 46 and the fixed rod can be disconnected, and the movement direction of the drive rod 46 can be limited by the drive component. That is to say, it is only necessary to ensure that the drive rod 46 remains perpendicular to the fixed rod during its movement in the Z direction.

[0058] For example, the first arm 43 is hinged to the end region of the first end of the fixture 45, and the second arm 44 is hinged to the end region of the second end of the fixture 45.

[0059] For example, refer to Figure 7The vertical distance between the hinge point of the first arm 43 and the fixed frame 45 and the drive rod 46 is d1, and the vertical distance between the hinge point of the second arm 44 and the fixed frame 45 and the drive rod 46 is d2, where d1 equals d2. The length of the first connecting rod 47 is equal to the length of the second connecting rod 48, and the length of the first arm 43 is equal to the length of the second arm 44. At this time, the linkage structure formed by the drive rod 46, the first connecting rod 47, the first arm 43, and the fixed frame 45 is completely symmetrical with the linkage structure formed by the drive rod 46, the second connecting rod 48, the second arm 44, and the fixed frame 45. As the drive rod 46 moves along the Z direction, the rotation amplitude of the first arm 43 and the rotation amplitude of the second arm 44 are completely consistent, which helps the first attaching roller 41 and the second attaching roller 42 to smoothly and reliably roll the conductive film 2, ensuring that the force applied by the first attaching roller 41 and the second attaching roller 42 to the conductive film 2 is basically the same.

[0060] In some examples, the bonding mechanism also includes a resilient reset member 49, which is configured to reposition the bonding mechanism by elastic drive. The resilient reset member 49 can be a spring, using compression or tension of the spring to provide elastic force to reset the bonding mechanism. It should be noted that, generally, the initial state of the bonding mechanism is when the first arm 43 and the second arm 44 are in a closed state close to each other.

[0061] For example, refer to Figure 8 and Figure 9 The drive rod 46 passes through the fixed frame 45 and can move relative to the fixed frame 45 in the Z direction. A blocking part 461 is provided on the outer periphery of the drive rod 46. The elastic reset member 49 can be sleeved on the drive rod 46, with one end abutting against the fixed frame 45 and the other end abutting against the blocking part 461. As the drive rod 46 moves towards the display panel 1 in the Z direction, the drive rod 46 will compress the elastic reset member 49. After the bonding mechanism rolls and bonds the conductive film 2 to the backlight surface of the display panel 1, the elastic force of the elastic reset member 49 can drive the drive rod 46 to move away from the display panel 1 in the Z direction, assisting the bonding mechanism in resetting.

[0062] For example, refer to Figure 10 and Figure 11 The two ends of the elastic reset member 49 can be connected to the first arm 43 and the second arm 44 respectively. After the first arm 43 and the second arm 44 move away from each other and open up, the elastic reset member 49 is stretched. After the bonding mechanism rolls and bonds the conductive film 2 to the backlight surface of the display panel 1, the elastic force of the elastic reset member 49 can drive the first arm 43 and the second arm 44 to move closer to each other, assisting the bonding mechanism in resetting.

[0063] For example, refer to Figure 12 and Figure 13A mounting plate 410 is also provided on the side of the fixing frame 45 away from the display panel 1, and a pressure spring 411 is provided between the mounting plate 410 and the fixing frame 45. After the bonding mechanism moves down to contact the conductive film 2 and squeezes the conductive film 2, the pressure spring 411 will be compressed. As the first bonding roller 41 and the second bonding roller 42 in the bonding mechanism gradually change from a closed state close to each other to an open state away from each other, the distance between the fixing frame 45 and the display panel 1 will change. At this time, the pressure spring 411 can drive the fixing frame 45 to move towards the display panel 1, so that the first bonding roller 41 and the second bonding roller 42 can always be in close contact with the display panel 1.

[0064] In some embodiments, the attachment device further includes a support component for supporting the display panel 1, wherein the light-emitting surface of the display panel 1 is attached to the support component.

[0065] For example, refer to Figure 14 The support component 3 can fix the display panel 1 by adsorption. Specifically, the support component 3 is provided with hollow air holes. A fan is used to create negative pressure below the support component 3, thereby using the negative pressure to adsorb the light-emitting surface of the display panel 1 and fix the display panel 1.

[0066] For example, the support component 3 may also have a cavity, the shape of which is exactly the same as the shape of the light-emitting surface of the display panel 1, thereby improving the reliability of the support component 3 in fixing the display panel 1. Specifically, the inner surface of the cavity includes a first segment 31 and two second segments 32. The two second segments 32 are located on both sides of the first segment 31 along the X direction. The first segment 31 corresponds to and fits the planar area 11 of the display panel 1, and the second segment 32 corresponds to and fits the curved area 12 of the display panel 1.

[0067] In summary, with Figure 12 and Figure 13 As shown in the figure, the working principle of the attachment device provided in this embodiment of the invention is as follows: When it is necessary to attach the conductive film 2 to the backlight surface of the display panel 1, the entire bonding mechanism is lowered until the first bonding roller 41 and the second bonding roller 42 contact and compress the conductive film 2. The drive rod 46 is activated and moves closer to the display panel 1 in the Z direction. The drive rod 46 will drive the first connecting rod 47 and the second connecting rod 48 to move, which in turn will drive the first arm 43 and the second arm 44 to rotate relative to the fixed frame 45, so that the first arm 43 and the second arm 44 open synchronously. During the process, the distance between the fixed frame 45 and the display panel 1 will change. The pressure spring 411 will drive the fixed frame 45 to move towards the display panel 1, so that the first bonding roller 41 and the second bonding roller 42 can always be in close contact with the display panel 1. The first attaching roller 41 and the second attaching roller 42 can simultaneously squeeze the conductive film 2 in different curved areas 12, and the forces applied to the display panel 1 by the first attaching roller 41 and the second attaching roller 42 can cancel each other in the first direction, so that the display panel 1 can remain stable during the rolling of the conductive film 2. Therefore, when the rolling force applied by the first attaching roller 41 and the second attaching roller 42 in the corresponding curved area 12 is increased, the display panel 1 can remain stable, thereby increasing the bonding force between the conductive film 2 and the curved area 12 and effectively activating the conductive film 2 in the curved area 12.

[0068] In another aspect, at least one embodiment of the present invention also provides a method for attaching a conductive film to a display panel. The method for attaching a conductive film to a display panel provided by the embodiments of the present invention will be described below with reference to some specific implementation methods.

[0069] refer to Figure 15 The conductive film attachment method for the display panel includes: S100, provides display panel 1.

[0070] refer to Figure 1 The display panel 1 has a light-emitting surface and a backlight surface, and the cross-section of the display panel 1 in the Y direction is the same. The display panel 1 includes a planar region 11 and two curved regions 12. The two curved regions 12 are located on both sides of the planar region 11 in the X direction. The two curved regions 12 are symmetrically arranged in the Y direction and are both curved toward the backlight surface of the display panel 1.

[0071] Among them, the curved surface region 12 can be a circular arc contour, a part of an elliptical contour, or a curved contour with a gradually changing diameter.

[0072] S200, provides conductive film 2.

[0073] refer to Figure 1The conductive film 2 includes a first portion 21 and two second portions 22, which are located on both sides of the first portion 21 in a first direction. For example, the conductive film 2 may include SCF (surface-conductive film).

[0074] S300. The conductive film 2 is placed on the backlight surface of the display panel 1, wherein the first part 21 corresponds to the planar area 11 and the second part 22 corresponds to the curved area 12.

[0075] It should be noted that before placing the conductive film 2 on the backlight surface of the display panel 1, the display panel 1 needs to be fixed. For example, a negative pressure adsorption method can be used to fix the display panel 1. Specifically, the display panel 1 is placed on the support component 3, which has perforated air holes. A fan is used to create negative pressure below the support component 3, thereby using the negative pressure to adsorb the light-emitting surface of the display panel 1, thus fixing the display panel 1.

[0076] S400, Roll-fit the conductive film 2.

[0077] refer to Figure 4 The first attaching roller 41 and the second attaching roller 42 move synchronously closer or further apart in a first direction to roll and attach the conductive film 2 located in the planar region 11 and the curved region 12. During the rolling process of the conductive film 2 attached to the backlight surface of the display panel 1 using the first attaching roller 41 and the second attaching roller 42, the force applied by the first attaching roller 41 in the X direction to the corresponding curved region 12 is F1, and the force applied by the second attaching roller 42 in the X direction to the corresponding curved region 12 is F2. The forces F1 and F2 are in opposite directions and can cancel each other out, thus ensuring the stability of the display panel 1 during the rolling process of the conductive film 2. Simultaneously, because the display panel 1 remains stable during the rolling process of the conductive film 2, the rolling force applied by the first attaching roller 41 and the second attaching roller 42 in the corresponding curved region 12 can be increased to a certain extent, thereby improving the bonding force between the conductive film 2 and the curved region 12 and effectively activating the conductive film 2 within the curved region 12.

[0078] For example, the first attaching roller 41 and the second attaching roller 42 respectively and simultaneously contact the two second portions 22 of the conductive film 2. That is, when the first attaching roller 41 rolls one second portion 22 of the conductive film 2, the second attaching roller 42 simultaneously rolls the other second portion 22 of the conductive film 2. For example, the height at which the first attaching roller 41 rolls the corresponding first portion 21 is the same as the height at which the second attaching roller 42 rolls the corresponding second portion 22. This is more conducive to balancing the force F1 applied by the first attaching roller 41 in the X direction to the corresponding curved surface region 12 and the force F2 applied by the second attaching roller 42 in the X direction to the corresponding curved surface region 12.

[0079] For example, the curvature of the first attaching roller 41 is the same as that of the second attaching roller 42. The curvature of the first attaching roller 41 is greater than the curvature of any point in the curved area 12. This ensures that the first attaching roller 41 will not interfere with the curved area 12 during the process of attaching the conductive film 2. At this time, the first attaching roller 41 and the second attaching roller 42 can form a rolling contact with any point in the curved area 12, thereby improving the reliability of rolling attachment of the conductive film 2.

[0080] In some other possible embodiments, the conductive film attachment method for the display panel further includes, in addition to the above method, pre-folding the conductive film 2. (Refer to...) Figure 1 After the conductive film 2 is pre-folded, a pre-fold line 20 is formed along the Y direction. The pre-fold line 20 is located at least at the junction of the second part 22 and the first part 21. After being pre-folded, the conductive film 2 will be bent at a certain angle on both sides of each pre-fold line 20. This helps to reduce the gap between the second part 22 of the conductive film 2 and the curved area 12. Under the rolling action of the first attaching roller 41 and the second attaching roller 42, the second part 22 is more easily attached to the curved area 12, reducing the difficulty of attaching the second part 22 of the conductive film 2 to the curved area 12.

[0081] It should be noted that the pre-folding of the conductive film 2 is performed before step S400 "rolling and attaching the conductive film 2", specifically before or after step S300 "placing the conductive film 2 on the backlight side of the display panel 1".

[0082] For example, refer to Figure 2 Each second part 22 includes multiple pre-fold lines 20. It can be understood that the more pre-fold lines 20 are located in the second part 22, the more flat surfaces the second part 22 has before being rolled, and the smaller the maximum distance between the second part 22 and the curved area 12. That is, the second part 22 is more closely attached to the curved area 12 before being rolled. Under the rolling action of the first attaching roller 41 and the second attaching roller 42, the second part 22 is more easily attached to the curved area 12, reducing the difficulty of attaching the second part 22 of the conductive film 2 to the curved area 12.

[0083] For example, the distance between two adjacent pre-broken lines 20 within each second part 22 is the same, so as to control the specific position of the pre-broken line 20.

[0084] For example, refer to Figure 3Multiple pre-fold lines 20 divide the second part 22 into multiple sub-regions. The angle between the sub-region furthest from the first part 21 and the first part 21 is A, and the maximum bending angle of the curved surface region 12 is B. Angle A is less than angle B. This ensures that the sub-region furthest from the first part 21 will not roll back. During the rolling and attaching process of the first attaching roller 41 or the second attaching roller 42 to the second part 22, the sub-region furthest from the first part 21 will not fold due to compression, ensuring that the second part 22 can be completely attached to the curved surface region 12.

[0085] In summary, the conductive film attachment method for the display panel provided in this embodiment of the invention has at least the following advantages: (1) The first attaching roller 41 and the second attaching roller 42 can simultaneously squeeze the corresponding second part 22. The force applied by the first attaching roller 41 and the second attaching roller 42 to the display panel 1 can cancel each other in the first direction, so that the display panel 1 can remain stable during the rolling of the conductive film 2. Therefore, when the rolling force applied by the first attaching roller 41 and the second attaching roller 42 in the corresponding curved area 12 is increased, the display panel 1 can remain stable, thereby increasing the bonding force between the conductive film 2 and the curved area 12, and effectively activating the conductive film 2 attached to the curved area 12.

[0086] (2) The conductive film 2 is pre-folded. After being pre-folded, the conductive film 2 will be bent at a certain angle on both sides of each pre-fold line. This helps to reduce the gap between the second part 22 of the conductive film 2 and the curved area 12. Under the rolling action of the first attaching roller 41 and the second attaching roller 42, the second part 22 is more easily attached to the curved area 12, reducing the difficulty of attaching the second part 22 of the conductive film 2 to the curved area 12.

[0087] (3) Multiple pre-fold lines are formed in the second part 22, which divide the second part 22 into multiple sub-regions. The angle between the sub-region furthest from the first part 21 and the first part 21 is A, and the bending angle of the curved surface region 12 is B. Angle A is smaller than angle B. This ensures that the sub-region furthest from the first part 21 will not roll back. During the rolling and attaching process of the first attaching roller 41 or the second attaching roller 42 to the second part 22, the sub-region furthest from the first part 21 will not fold due to compression, ensuring that the second part 22 can be completely attached to the curved surface region 12.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A conductive film, characterized in that, include: A first part and two second parts, the two second parts being located on either side of the first part in the first direction; wherein, the second part has at least one pre-broken line extending along the second direction, the first direction intersecting the second direction.

2. The conductive film according to claim 1, characterized in that, The pre-broken line is located at least at the junction of the second part and the first part.

3. The conductive film according to claim 1, characterized in that, Each of the second parts includes multiple of the aforementioned pre-broken lines.

4. The conductive film according to claim 3, characterized in that, The distance between two adjacent pre-broken lines within each of the second portions is the same.

5. A display module, characterized in that, include: The display panel includes a light-emitting surface and a backlight surface arranged opposite to each other. The display panel includes a planar area and two curved areas. The two curved areas are located on both sides of the planar area in a first direction. The two curved areas are symmetrically arranged along a second direction and both curve toward the backlight surface of the display panel. The conductive film as described in any one of claims 1 to 4 is attached to the backlight surface of the display panel, wherein the first portion corresponds to the planar region and the second portion corresponds to the curved region.

6. An attachment apparatus for attaching a conductive film as described in any one of claims 1 to 4 to a display panel in a display module as described in claim 5, characterized in that, include: The bonding mechanism includes a first bonding roller and a second bonding roller, wherein the axis of the first bonding roller and the axis of the second bonding roller are both arranged along a second direction; The first and second attachment rollers are configured to move closer or further away synchronously in a first direction to roll the conductive film so that the conductive film is attached to the backlight surface of the display panel.

7. The bonding device according to claim 6, characterized in that, The bonding mechanism further includes: The first arm has a first support at one end near the first attachment roller, and the first attachment roller is rotatably connected to the first support. The second arm has a second support at one end near the first attaching roller, and the second attaching roller is rotatably connected to the second support. A drive assembly configured to simultaneously drive the first arm and the second arm toward each other or away from each other.

8. The bonding device according to claim 7, characterized in that, The driving component include: The fixing frame includes a first end and a second end that are disposed opposite to each other. The end of the first arm that is away from the first attachment roller is hinged to the first end of the fixing frame, and the end of the second arm that is away from the second attachment roller is hinged to the second end of the fixing frame. A drive rod is provided, which is perpendicular to the fixed frame. One end of the drive rod extends beyond the fixed frame and is connected to a first connecting rod and a second connecting rod. The other end of the first connecting rod is hinged to the first support arm, and the other end of the second connecting rod is hinged to the second support arm.

9. The bonding device according to claim 8, characterized in that, The vertical distance between the hinge point of the first arm and the fixed frame and the drive rod is d1, and the vertical distance between the hinge point of the second arm and the fixed frame and the drive rod is d2, where d1 equals d2; the length of the first connecting rod is equal to the length of the second connecting rod, and the length of the first arm is equal to the length of the second arm.

10. The attachment device according to claim 6, characterized in that, The curvature of the first attaching roller is the same as that of the second attaching roller, and the curvature of the first attaching roller is greater than the curvature of any point in the curved surface region.

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