Jig, curved display module and assembly method

Abstract

The present application provides a jig, a curved display module and an assembling method. The jig comprises a plurality of support members, each of which is rotatably connected to an adjacent support member to switch the jig between a flat state and a curved state. Based on the structure, the assembling method adjusts the process of assembling the curved display module. Before the display panel is bent, the printed circuit board is first folded to the lower side and fixed by means of the jig in the flat state. Since there is no misalignment and pulling problem in folding the printed circuit board in the flat state, the printed circuit board is bent together with the display panel by means of the jig after being folded to the back. During the bending process, the jig fully supports the display panel and the printed circuit board, so that the chip on film is not distorted and fails. Then, the display panel and the printed circuit board in the curved state are assembled to the curved backlight module, and then the jig is removed to complete the assembly. That is, the present application can effectively reduce the risk of chip on film peeling failure in the assembling process of the curved display module.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a fixture, a curved display module, and an assembly method. Background Technology

[0002] With the sales and demand for curved monitors increasing year by year, curved screens have become the mainstream design in the monitor industry. Curved monitors offer a better sense of immersion, higher visibility, and a more comfortable viewing angle.

[0003] Current curved product assembly technology involves first bending the flat display panel and attaching it to the frame of the curved backlight module during the assembly of curved display modules (OC, Open Cell). Then, the PCB (Printed Circuit Board) is directly folded to the back of the curved backlight module. During this folding process, the COF (Chip-on-Foil Film) on both sides of the connection between the PCB and the display panel is subjected to severe tensile stress, which leads to COF twisting and peeling failure.

[0004] Therefore, the existing assembly technology for curved display modules has a technical problem of COF distortion failure, which needs to be improved. Summary of the Invention

[0005] This invention provides a fixture, a curved display module, and an assembly method to alleviate the technical problem of COF distortion failure in the assembly technology of curved display modules.

[0006] To solve the above problems, the technical solution provided by the present invention is as follows:

[0007] This invention provides a fixture for assembling a curved display module, comprising: a plurality of support members, each of which is rotatably connected to an adjacent support member to allow the fixture to switch between a flat state and a curved state;

[0008] When the fixture is in the straight state, the opposing first and second support surfaces formed by the plurality of support members are planar; when the fixture is in the curved state, the first and second support surfaces formed by the plurality of support members are curved surfaces.

[0009] In the fixture provided in the embodiments of the present invention, each of the support members includes a connector and a first support member and a second support member extending from opposite ends of the connector. The first support member and the second support member are disposed opposite to each other. Each first support member is rotatably connected to an adjacent first support member. The surfaces of a plurality of first support members that are away from the second support member together form the first support surface, and the surfaces of a plurality of second support members that are away from the first support member together form the second support surface.

[0010] In the fixture provided in the embodiments of the present invention, the end of the first support member that is away from the connector extends beyond the end of the second support member that is away from the connector.

[0011] In the fixture provided in the embodiments of the present invention, cushioning foam is provided on the first support surface.

[0012] In the fixture provided in the embodiments of the present invention, the fixture further includes a plurality of rotating parts, each rotating part including a first connecting sub-part, a second connecting sub-part, and a rotating shaft. The first connecting sub-part and the second connecting sub-part are respectively connected to a support member, and the first connecting sub-part and the second connecting sub-part are rotatably connected through the rotating shaft.

[0013] Meanwhile, embodiments of the present invention provide a method for assembling a curved display module, including:

[0014] S1, providing a curved display module to be assembled and the aforementioned fixture, wherein the curved display module to be assembled includes a display panel in a flat state, a PCB in a flat state, a plurality of COFs in a flat state and electrically connected between the display panel and the PCB, and a backlight module in a curved state.

[0015] S2, the display panel in a flat state is installed onto the first support surface of the fixture in a flat state, the plurality of COFs in a flat state are flipped, and the PCB in a flat state is installed onto the second support surface of the fixture in a flat state.

[0016] S3, simultaneously bend the display panel, the fixture, and the PCB, which are in a straight state, to obtain the display panel, the fixture, and the PCB in a curved state;

[0017] S4, the display panel, the fixture, and the PCB, which are in a curved state, are pressed onto the frame of the backlight module, wherein the frame is in a curved state;

[0018] S5, remove the fixture and install the display panel and the PCB, which are in a curved state, onto the backlight module.

[0019] In the assembly method provided in this embodiment of the invention, in step S2, the display panel is located on the first support member of the fixture, the COF is located on one side of the connector of the fixture, and the PCB is located below the second support member of the fixture.

[0020] In the assembly method provided in this embodiment of the invention, in step S2, the flip-chip film is also located on the first support member of the fixture and below the second support member of the fixture.

[0021] In the assembly method provided in the embodiment of the present invention, in step S4, the first support member of the fixture is located on the frame, the connector of the fixture is located on one side of the frame, and the second support member of the fixture is located below the frame so that the PCB overlaps with the frame.

[0022] Meanwhile, this embodiment of the invention provides a curved display module, which is obtained by the above-described assembly method.

[0023] The beneficial effects of the present invention are as follows: The present invention provides a fixture, a curved display module and an assembly method. The fixture includes a plurality of support members, each of which is rotatably connected to an adjacent support member so that the fixture can switch between a flat state and a curved state. When the fixture is in the flat state, the first support surface and the second support surface formed by the plurality of support members are planar. When the fixture is in the curved state, the first support surface and the second support surface formed by the plurality of support members are curved surfaces. Based on this structure, the assembly method of this application adjusts the OC assembly process of the curved display module. Before bending the display panel, the PCB is first folded to the lower side for support and fixation using the fixture. Because there is no misalignment or pulling problem when folding the PCB in the flat state, the risk of COF twisting and peeling is low. After the PCB is on the back, it is bent together with the panel using the fixture. During this bending process, the fixture provides sufficient support for both the panel and the PCB, preventing COF twisting and peeling failure. Then, the curved panel and PCB are assembled onto the curved backlight module, and the fixture is removed to complete the assembly. In other words, this application can effectively reduce the risk of COF peeling failure during the curved OC assembly process by providing the fixture and the corresponding assembly method. Attached Figure Description

[0024] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0025] Figure 1 A schematic diagram of a fixture provided in an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of a support member in a fixture provided in an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional schematic diagram of a rotating component in a fixture provided in an embodiment of the present invention;

[0028] Figures 4 to 9 This is a schematic diagram of the component states corresponding to each step in the assembly method provided in the embodiments of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0032] The embodiments of this application can alleviate the technical problem of COF distortion failure in existing curved display module assembly technologies. This application will now be described in detail with reference to the accompanying drawings.

[0033] like Figures 1 to 3As shown, in one embodiment, the jig 10 for assembling a curved display module provided by the present invention includes: a plurality of support members 11, each of the support members 11 being rotatably connected to an adjacent support member 11 so that the jig can switch between a flat state and a curved state.

[0034] Among them, such as Figure 1 As shown, when the fixture 10 is in the straight state, the opposing first and second support surfaces formed by the plurality of support members 11 are planar; when the fixture 10 is in the curved state, the first and second support surfaces formed by the plurality of support members 11 are curved surfaces.

[0035] This embodiment provides a fixture comprising multiple support members, each rotatably connected to an adjacent support member to allow the fixture to switch between a flat state and a curved state. When the fixture is in the flat state, the first and second support surfaces formed by the multiple support members are planar; when the fixture is in the curved state, the first and second support surfaces formed by the multiple support members are curved surfaces. Based on this structure, before bending the display panel, the PCB is first folded to the lower side for support and fixation using this fixture. Because folding the PCB in the planar state eliminates the problem of misalignment and pulling, the risk of COF peeling is very low. After the PCB is on the back side, it is bent together with the panel using the fixture. During this bending process, the fixture provides sufficient support for both the panel and the PCB, preventing COF distortion and failure.

[0036] like Figure 2 As shown, in the fixture provided in the embodiment of the present invention, each of the support members 11 includes a connector 110 and a first support member 111 and a second support member 112 extending from opposite ends of the connector 110. The first support member 111 and the second support member 112 are disposed opposite to each other. Each first support member 111 is rotatably connected to an adjacent first support member 111. The surfaces of a plurality of first support members 111 that are away from the second support member 112 together form the first support surface, and the surfaces of a plurality of second support members 112 that are away from the first support member 111 together form the second support surface.

[0037] like Figure 2 As shown, in the fixture provided in this embodiment of the invention, the end of the first support member 111 that is away from the connector 110 extends beyond the end of the second support member 112 that is away from the connector 110. Based on this structure, the display panel and PCB can be well supported without excessive material waste.

[0038] In the fixture provided in this embodiment of the invention, a cushioning foam is provided on the first support surface. This cushioning foam can prevent damage to the bottom surface of the display panel.

[0039] like Figure 1 As shown, in the fixture provided in the embodiment of the present invention, the fixture 10 further includes a plurality of rotating members 12, and each of the support members 11 is rotatably connected to the adjacent support member 11 through a rotating member 12.

[0040] like Figure 3 As shown, in the fixture provided in this embodiment of the invention, the rotating component 12 includes a first connecting sub-component 121, a second connecting sub-component 122, and a rotating shaft 120. The first connecting sub-component 121 and the second connecting sub-component 122 are respectively connected to a support component 11, and the first connecting sub-component 121 and the second connecting sub-component 122 are rotatably connected via the rotating shaft 120. Specifically, the rotating component 12 can be implemented using a simple hinge, reducing costs.

[0041] like Figure 3 As shown, in the fixture provided in this embodiment of the invention, the rotating member 12 further includes a rotation angle limiting member, which is disposed on the rotating shaft 120. Specifically, as... Figure 3 As shown, the rotation angle limiting member includes an extension 1211 of the first connecting sub-component 121. Based on the extension 1211, the relative rotation direction of the first connecting sub-component 121 and the second connecting sub-component 122 can be limited, making it easier for the fixture 10 to be positioned in a straight state.

[0042] like Figure 3 As shown, in the fixture provided in this embodiment of the invention, the first connecting part 121 and the extension 1211 are located on the same plane. Based on this structure, the manufacturing cost of the fixture can be simplified.

[0043] In the fixture provided in this embodiment of the invention, the first connecting sub-component 121 and the second connecting sub-component 122 are integrally formed with the first support member 111 of the connected support member 11. Based on this structure, the manufacturing difficulty of the entire fixture can be reduced.

[0044] like Figure 2 As shown, in the fixture provided in this embodiment of the invention, the planes containing the first support member 111 and the second support member 112 are parallel. This facilitates the fixing of the display panel and the PCB.

[0045] like Figure 2 As shown, in the fixture provided in this embodiment of the invention, the plane containing the connector 110 and the first support 111 is perpendicular. This allows for bending support of the COF based on the connector 110.

[0046] Furthermore, embodiments of this application also provide a curved display assembly apparatus, which includes:

[0047] Backlight module fixing components;

[0048] Display module fixing components;

[0049] Flip-over components;

[0050] A fixture includes a plurality of support members, each of which is rotatably connected to an adjacent support member to allow the fixture to switch between a flat state and a curved state; when the fixture is in the flat state, the first support surface and the second support surface formed by the plurality of support members are planar; when the fixture is in the curved state, the first support surface and the second support surface formed by the plurality of support members are curved surfaces.

[0051] Correspondingly, based on the aforementioned curved display assembly apparatus, a corresponding method for assembling a curved display is also provided, which includes:

[0052] The curved backlight module is fixed on the backlight module fixing component;

[0053] The display module, which is in a flat state, is fixed on the display module fixing member. The display module includes a display panel, at least two flexible circuit boards, and a printed circuit board corresponding to each of the flexible circuit boards.

[0054] Align the first support surface of the flip support fixture with the fixing surface of the display panel;

[0055] The flipping component is controlled to bend the flexible circuit board, causing the printed circuit board to be aligned and flipped onto the second support surface of the flipping support fixture;

[0056] The flipping component is controlled to bend the flipping support fixture so that the display module is in a curved state and matches the bending angle of the curved backlight module;

[0057] Control the relative movement of the backlight module fixing member and / or the display module fixing member to align the curved backlight module and the display module in the curved state;

[0058] Control the movement of the flip support member out;

[0059] The curved backlight module and the display module in the curved state are bound together and aligned.

[0060] Furthermore, such as Figures 4 to 9 As shown, in order to assemble a curved display module using the above-mentioned fixture, this application also provides a method for assembling a curved display module, the method comprising:

[0061] S1 provides the curved display module to be assembled, as well as the aforementioned fixture.

[0062] In this step, the curved display module to be assembled includes a display panel in a flat state, a PCB in a flat state, multiple COFs in a flat state and electrically connected between the display panel and the PCB, and a backlight module in a curved state.

[0063] In this step, the fixture is used as follows: Figure 4 As shown, it is made up of multiple joints with the same cross section, and is in a straight state before assembly.

[0064] S2, the display panel in a flat state is installed onto the first support surface of the fixture in a flat state, the plurality of COFs in a flat state are flipped, and the PCB in a flat state is installed onto the second support surface of the fixture in a flat state.

[0065] Among them, such as Figure 5 As shown, in S2, the display panel (Panel TFT in the figure) is located on the first support of the fixture, the COF is located on one side of the connector of the fixture, and the PCB is located under the second support of the fixture.

[0066] Among them, such as Figure 5 As shown, in S2, the flip-chip COF is also located on the first support of the fixture and below the second support of the fixture.

[0067] In this step, the usage is as follows: Figure 5 Place the OC on the fixture. There is cushioning foam (not shown) between the panel and the upper surface of the fixture to prevent scratches. Keep it flat and fold the PCB to the lower back side. This process will not have the COF pulling risk of conventional assembly folding, only a certain bending stress.

[0068] S3, simultaneously bend the display panel, the fixture, and the PCB, which are in a straight state, to obtain the display panel, the fixture, and the PCB in a curved state.

[0069] Among them, such as Figure 6 As shown, in step S3, the structure obtained in step S2 is bent downward with the center of the fixture as the bending center. After the PCB is on the back side, it is bent together with the panel with the help of the fixture. During this bending process, the fixture provides sufficient support for the panel and the PCB, and will not cause COF to twist and fail.

[0070] In this step, since the fixture only has joint hinges on the upper side, it can be bent downwards arbitrarily to fit the backlight curve as closely as possible. This process will also bend the PCB together to avoid misalignment and pulling due to differences in flatness and curvature.

[0071] S4, the display panel, the fixture, and the PCB, which are in a curved state, are pressed onto the frame of the backlight module, wherein the frame is in a curved state.

[0072] In S4, the first support member of the fixture is located on the frame, the connector of the fixture is located on one side of the frame, and the second support member of the fixture is located below the frame so that the PCB overlaps with the frame.

[0073] In this step, such as Figure 7 as well as Figure 8 As shown, the jig and OC are mounted together on the curved backlight, and the panel and jig are pressed together onto the backlight's plastic frame; specifically, as... Figure 7 As shown, to avoid the PCB from contacting the backlight module ( Figure 7 Interference with the module backlight) is addressed by offsetting the OC and fixture together towards the source side (the end of the display panel where the source driver chip is located, commonly referred to as the bottom bezel) by a certain distance before bonding; for example... Figure 8 As shown, after bonding, the fixture and OC are moved together a certain distance to the opposite side of the source (the side opposite the bottom frame, in the direction of the top frame) to ensure that the PCB and the backlight overlap to facilitate PCB bonding and shaping.

[0074] S5, remove the fixture and install the display panel and the PCB, which are in a curved state, onto the backlight module.

[0075] In this step, such as Figure 9 As shown, the fixture is pulled out from either side to further position and fix the Panel and PCB, completing the OC assembly process.

[0076] This embodiment provides an assembly method for a curved display module. This assembly method adjusts the OC assembly process of the curved display module. Before bending the display panel, the PCB is first folded to the lower side for support and fixation using a fixture. Because there is no misalignment or pulling problem when folding the PCB in a flat state, the risk of COF peeling is very low. After the PCB is on the back, it is bent together with the panel using the fixture. During this bending process, the fixture provides sufficient support for both the panel and the PCB, preventing COF distortion and failure. Then, the curved panel and PCB are assembled onto the curved backlight module, and the fixture is removed. This method can effectively reduce the risk of COF peeling failure during the curved OC assembly process.

[0077] Meanwhile, this embodiment of the invention provides a curved display module, which is obtained by the above-described assembly method.

[0078] As can be seen from the above embodiments:

[0079] This invention provides a fixture, a curved display module, and an assembly method. The fixture includes multiple support members, each of which is rotatably connected to an adjacent support member to allow the fixture to switch between a flat state and a curved state. When the fixture is in the flat state, the first support surface and the second support surface formed by the multiple support members are planar. When the fixture is in the curved state, the first support surface and the second support surface formed by the multiple support members are curved surfaces. Based on this structure, the assembly method of this application adjusts the OC assembly process of the curved display module. Before bending the display panel, the PCB is first folded to the lower side for support and fixation using the fixture. Because there is no misalignment or pulling problem when folding the PCB in the flat state, the risk of COF peeling is very low. After the PCB is on the back, it is bent together with the panel using the fixture. During this bending process, the fixture provides sufficient support for both the panel and the PCB, preventing COF distortion and failure. Then, the curved panel and PCB are assembled onto the curved backlight module, and the fixture is removed. In other words, this application can effectively reduce the risk of COF peeling failure during the curved OC assembly process by providing the fixture and the corresponding assembly method.

[0080] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A method for assembling a curved surface display module, characterized in that, include: S1, providing a curved display module to be assembled and a fixture, wherein the curved display module to be assembled includes a display panel in a flat state, a printed circuit board in a flat state, a plurality of flip-chip films in a flat state and electrically connected between the display panel and the printed circuit board, and a backlight module in a curved state. The fixture, used for assembling curved display modules, includes: a plurality of support members, each of which is rotatably connected to an adjacent support member to allow the fixture to switch between a flat state and a curved state; Wherein, when the fixture is in the straight state, the opposing first support surface and second support surface formed by the plurality of support members are planar; when the fixture is in the curved state, the first support surface and the second support surface formed by the plurality of support members are curved surfaces; Each of the support members includes a connector and a first support member and a second support member extending from opposite ends of the connector. The first support member and the second support member are disposed opposite to each other. Each first support member is rotatably connected to an adjacent first support member. The surfaces of a plurality of first support members that are away from the second support member together form the first support surface. The surfaces of a plurality of second support members that are away from the first support member together form the second support surface. S2, the display panel in a flat state is mounted onto the first support surface of the fixture in a flat state, the plurality of flip-chip films in a flat state are flipped, and the printed circuit board in a flat state is mounted onto the second support surface of the fixture in a flat state. S3, simultaneously bend the display panel, the fixture, and the printed circuit board in a straight state to obtain the display panel, the fixture, and the printed circuit board in a curved state; S4, the display panel, the fixture, and the printed circuit board, which are in a curved state, are pressed onto the frame of the backlight module, wherein the frame is in a curved state; S5, remove the fixture and install the display panel and the printed circuit board in the curved state onto the backlight module.

2. The assembly method according to claim 1, characterized in that, In step S2, the display panel is located on the first support of the fixture, the flip-chip film is located at least on one side of the connector of the fixture, and the printed circuit board is located under the second support of the fixture.

3. The assembly method according to claim 2, characterized in that, In step S2, the flip-chip film is also located on the first support member of the fixture and below the second support member of the fixture.

4. The assembly method according to claim 1, characterized in that, In step S4, the first support member of the fixture is located on the frame, the connector of the fixture is located on one side of the frame, and the second support member of the fixture is located below the frame so that the printed circuit board overlaps with the frame.

5. The assembly method according to claim 1, characterized in that, The end of the first support member that is away from the connector extends beyond the end of the second support member that is away from the connector.

6. The assembly method according to claim 1, characterized in that, The first support surface is provided with cushioning foam.

7. The assembly method according to any one of claims 1 to 6, characterized in that, The fixture further includes multiple rotating components, each including a first connecting component, a second connecting component, and a rotating shaft. The first connecting component and the second connecting component are respectively connected to a support component, and the first connecting component and the second connecting component are rotatably connected via the rotating shaft.

8. A curved surface display module, characterized in that, Obtained by the assembly method as described in any one of claims 1 to 7.

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