Display modules and electronic devices

Abstract

The display module and electronic device provided in this application include a first screen and a second screen. The second screen is strip-shaped and surrounds the first screen. One end of the second screen away from the first screen is bent to the side of the first screen away from the light-emitting surface. The second screen includes at least a portion of a break, which is electrically isolated from the first screen and spliced ​​to the first screen. By dividing the display module into a first screen corresponding to a planar portion and a strip-shaped second screen corresponding to a curved portion, and the second screen having a break that separates it from the first screen, the deformation of the second screen during the bonding process can be reduced, thereby reducing the risk of wrinkles on the curved portion and improving product yield.

Description

Technical Field

[0001] This application relates to the field of display device technology, and more specifically, to a display module and electronic device. Background Technology

[0002] With the development of display device manufacturing technology, flexible display screens are being used in more and more electronic devices. In some electronic devices, to improve the overall aesthetics, display modules with curved edges are used. During the manufacturing process of such display modules, when the flat flexible screen is bonded to a light-transmitting cover plate with curved edges, the edges of the flexible screen will undergo a certain degree of deformation. If the deformation is too large, it will cause wrinkles in the screen, affecting the bonding effect. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the above background, this application provides a display module, which includes a first screen and a second screen;

[0004] The second screen is strip-shaped and surrounds the first screen. The end of the second screen away from the first screen is bent to the side of the first screen away from the light-emitting surface.

[0005] The second screen includes at least a disconnected portion, which is electrically isolated from the first screen and is spliced ​​to the first screen.

[0006] In one possible implementation, the second screen body includes at least a portion of a connecting portion on the side near the first screen body, and the light-emitting driving circuit of the first screen body is electrically connected to the light-emitting driving circuit of the first bonding portion; the disconnect portion is electrically connected to the first bonding portion.

[0007] Preferably, the first screen or the second screen includes a first bonding portion for electrical connection with other circuits.

[0008] In one possible implementation, the second screen body includes two disconnected portions, which are symmetrically distributed relative to the first bonding portion.

[0009] In one possible implementation, the first screen and the second screen are electrically isolated, the first screen includes a second bonding portion, and the second screen includes a third bonding portion, the second bonding portion and the third bonding portion being used for electrical connection with other circuits.

[0010] In one possible implementation, the light-emitting surface of the first screen is circular.

[0011] In one possible implementation, the planar unfolded shape of the light-emitting surface of the second screen is a fan ring.

[0012] In one possible implementation, the projection of the second screen onto the light-emitting surface of the first screen is annular.

[0013] In one possible implementation, the first screen and the second screen are flexible display screens.

[0014] In one possible implementation, the display module further includes a light-transmitting cover plate covering the light-emitting surfaces of the first screen and the second screen, the light-transmitting cover plate including a planar area corresponding to the first screen and a curved area corresponding to the second screen.

[0015] Another object of this application is to provide an electronic device, which includes the display module provided in this application.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] This application provides a display module and an electronic device. By dividing the display module into a first screen body corresponding to a planar portion and a strip-shaped second screen body corresponding to a curved portion, and the second screen body having a disconnected portion that is separate from the first screen body, the deformation of the second screen body generated during the bonding process can be reduced by using the strip-shaped second screen body to wrap around the first screen body, thereby reducing the risk of wrinkles in the curved portion and improving product yield. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a display module bonding process in the prior art;

[0020] Figure 2 One of the schematic diagrams of the display module provided in the embodiments of this application;

[0021] Figure 3 A second schematic diagram of the display module provided in the embodiments of this application;

[0022] Figure 4 This is the third schematic diagram of the display module provided in the embodiments of this application;

[0023] Figure 5 Fourth schematic diagram of the display module provided in the embodiments of this application;

[0024] Figure 6 Fifth schematic diagram of the display module provided in the embodiments of this application;

[0025] Figure 7 Sixth schematic diagram of the display module provided in the embodiments of this application;

[0026] Figure 8 Schematic diagram seven of the display module provided in the embodiments of this application;

[0027] Figure 9 Eighth schematic diagram of the display module provided in the embodiments of this application;

[0028] Figure 10 Schematic diagram nine of the display module provided in the embodiments of this application;

[0029] Figure 11 This is one of the schematic diagrams showing the angle setting of the display module provided in the embodiments of this application;

[0030] Figure 12 This is the second schematic diagram showing the angle setting of the display module provided in the embodiments of this application;

[0031] Figure 13 Schematic diagram ten of the display module provided in the embodiments of this application;

[0032] Figure 14 This is eleventh of the schematic diagrams of the display module provided in the embodiments of this application. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] It should be noted that similar labels 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.

[0036] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0038] Please see Figure 1 In some display modules, the edges of a flat flexible screen need to be bent into curved surfaces to form a flat display area 910 in the center and curved display areas 920 at the edges. However, the curved display area 920 undergoes a significant change in three-dimensional shape during the transition from a flat to a curved surface, making it prone to wrinkles. This is especially true in display modules where the flat area is circular; significant deformation occurs at various points along the direction surrounding the flat display area 910, greatly increasing the risk of wrinkles.

[0039] In view of this, this application provides a solution to reduce the risk of wrinkles in curved areas. The solution provided in this embodiment will be described in detail below.

[0040] This embodiment provides a display module; please refer to [reference needed]. Figure 2 , Figure 2 This is a planar unfolded schematic diagram of the display module, which includes a first screen 110 and a second screen 120. Optionally, the first screen 110 and the second screen 120 are OLED flexible displays.

[0041] The second screen 120 is a curved strip shape and includes at least a break portion 121, which is electrically isolated from the first screen 110. That is, before being attached to the light-transmitting cover 200, the break portion 121 of the second screen 120 can be separated from the first screen 110.

[0042] Please refer to Figure 3During the bonding process, the disconnected portion 121 of the second screen 120 can be bent away from the light-emitting surface of the first screen 110, and the side of the disconnected portion 121 is bonded to the side of the first screen 110, thereby splicing the disconnected portion 121 and the first screen 110 together to form a shape as shown in the image. Figure 4 and Figure 5 The shape shown.

[0043] Please refer to Figure 4 and Figure 5 After bonding, the second screen 120 surrounds at least a portion of the first screen 110. Please refer to [the documentation / reference]. Figure 6 , Figure 6 for Figure 4 As shown in the cross-sectional view along direction AA, after fitting, the section of the second screen 120 away from the first screen 110 can be bent to the side of the first screen 110 away from the light-emitting surface, thereby forming a curved edge portion. In this embodiment, the first screen 110 can correspond to the planar display area 910 of the display module, and the second screen 120 can correspond to the curved display area 920 of the display module.

[0044] Preferably, after bonding, the projection of the second screen 120 onto the light-emitting surface of the first screen 110 is annular, so that the second screen 120 can surround the entire first screen 110.

[0045] Based on the above design, by dividing the display module into a first screen 110 corresponding to the planar portion and a strip-shaped second screen 120 corresponding to the curved portion, and the second screen 120 having a break portion 121 that is separate from the first screen 110, the strip-shaped second screen 120 can be used to wrap around the first screen 110 during the bonding process, thereby reducing the deformation of the second screen 120 in the direction surrounding the first screen 110 during the bonding process, thus reducing the risk of wrinkles in the curved portion and improving product yield.

[0046] In one possible implementation, refer again Figure 2 The second screen 120 includes at least a connecting portion 122 on its side near the first screen 110. The light-emitting driving circuit of the first screen 110 is electrically connected to the light-emitting driving circuit of the connecting portion 122. The disconnect portion 121 is electrically connected to the connecting portion 122. For example, the disconnect portion 121, the connecting portion 122, and the array substrate of the first screen 110 are a connected whole, so that the first screen 110 and the second screen 120 can be driven simultaneously as a whole.

[0047] Alternatively, please refer to Figure 7 or Figure 8The first screen 110 or the second screen 120 includes a first bonding portion 131, which is used for electrical connection with other circuits. For example, the first bonding portion 131 may include bonding gold fingers or pads for electrical connection with other circuits, and the display module can obtain signals from other circuits for display through the first bonding portion 131.

[0048] Optionally, please refer to again Figure 7 The second screen 120 includes two disconnected portions 121, which are symmetrically distributed relative to the connecting portion 122. Thus, when the second screen 120 and the first screen 110 are bonded together, the two disconnected portions 121 can be bonded to the sides of the first screen 110 respectively, thereby reducing the risk of errors during bonding.

[0049] In another possible implementation, please refer to Figure 9 The first screen 110 and the second screen 120 can be two relatively independent screens, electrically isolated from each other. In this case, the first screen 110 includes a second bonding portion 132, and the second screen 120 includes a third bonding portion 133, which are used for electrical connection with other circuits. For example, the second bonding portion 132 and the third bonding portion 133 can include bonding gold fingers or solder pads for electrical connection with other circuits. The first screen 110 and the second screen 120 can be driven relatively independently for display via the second bonding portion 132 and the third bonding portion 133.

[0050] In one possible implementation, in its unfolded state, the light-emitting surface of the first screen 110 is circular, and the unfolded planar shape of the light-emitting surface of the second screen 120 is a fan-shaped ring. Optionally, the display angle of the second screen 120 after lamination can be adjusted by setting the angle of the fan-shaped ring of the second screen 120. Specifically, please refer to... Figure 11 The fan ring angle of the second screen body 120 is R1. Please refer to [link / reference]. Figure 13 The display angle of the second screen 120 after it is attached to the first screen 110 is R2, where R2 = arccos(R1 / 2π).

[0051] It should be noted that in other implementations of this application, the first screen 110 may also be of other shapes, such as ellipse, polygon or other irregular shapes, and the second screen 120 may be a strip structure whose shape after bonding matches the side contour shape of the first screen 110. These will not be described in detail here.

[0052] In one possible implementation, please refer to Figure 13 The display module further includes a light-transmitting cover plate 200 covering the light-emitting surfaces of the first screen 110 and the second screen 120. The light-transmitting cover plate 200 includes a planar area corresponding to the first screen 110 and a curved area corresponding to the second screen 120. The light-transmitting cover plate 200 can be a light-transmitting glass cover plate.

[0053] This application also provides an electronic device, which includes the display module provided in this application. Preferably, the electronic device can be a smart wearable device with a display screen, such as a smartwatch or a smart bracelet.

[0054] Based on the same inventive concept, this embodiment also provides a display module bonding method for bonding the display module provided in this embodiment. The method includes the following steps.

[0055] Step S110: Provide a bonding fixture 300, the bonding fixture 300 including a planar pressing area and a curved pressing area located around the planar pressing area.

[0056] The planar pressing area may be equipped with a vacuum adsorption device, and the curved pressing area may be equipped with an alignment groove.

[0057] Step S120: Place the display module to be bonded onto the bonding fixture 300.

[0058] The display module to be bonded can be... Figure 2 The display module is shown in its unfolded state. First, a traction film, which can be a UV anti-adhesion film, can be applied to both ends of the second screen 120. Next, after alignment is achieved between the display module to be bonded and the alignment marks on the bonding fixture 300, the first screen 110 of the display module to be bonded is adsorbed by the vacuum adsorption device on the bonding fixture 300. Then, the traction film applied to both ends of the second screen 120 is pulled onto the alignment groove of the curved pressing part of the bonding fixture 300.

[0059] In step S130, the display module to be bonded is pressed against the light-transmitting cover plate 200 by the bonding fixture 300.

[0060] The light-transmitting cover 200 includes a planar area corresponding to the first screen 110 and a curved area corresponding to the second screen 120. Please refer to... Figure 14 By controlling the bonding fixture 300 to move the display module to be bonded toward the light-transmitting cover plate 200, the display module to be bonded can be pushed to bond with the light-transmitting cover plate 200.

[0061] Step S140: Remove the bonding fixture 300 from the bonded display module.

[0062] Once the optically clear adhesive (OCA) between the display module to be bonded and the light-transmitting cover plate 200 has cured, the bonding fixture 300 can be removed. The traction film can then be removed by light irradiation; for example, UV light can be used to irradiate the traction film to reduce its stickiness, after which it can be removed from the second screen 120.

[0063] In summary, the embodiments of this application provide a display module and an electronic device. By dividing the display module into a first screen body corresponding to the planar portion and a strip-shaped second screen body corresponding to the curved portion, and the second screen body having a disconnected portion that is separate from the first screen body, the deformation of the second screen body generated during the bonding process can be reduced by using the strip-shaped second screen body to surround the first screen body, thereby reducing the risk of wrinkles in the curved portion and improving product yield.

[0064] 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.

[0065] 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 display module, characterized in that, The display module includes a first screen and a second screen; The second screen is strip-shaped and surrounds the first screen. The end of the second screen away from the first screen is bent to the side of the first screen away from the light-emitting surface. The second screen includes two disconnected portions, which are electrically isolated from the first screen and are spliced ​​to the first screen. The second screen body includes at least a connecting portion on the side near the first screen body, and the light-emitting driving circuit of the first screen body is electrically connected to the light-emitting driving circuit of the connecting portion; the two disconnect portions are electrically connected to the connecting portion and are symmetrically distributed relative to the connecting portion. The light-emitting surface of the first screen is circular; before being attached to the first screen, the planar unfolded shape of the light-emitting surface of the second screen is a fan ring; after being attached to the first screen, the projection of the second screen onto the light-emitting surface of the first screen is a ring surrounding the first screen.

2. The display module according to claim 1, characterized in that, The first screen or the second screen includes a first bonding portion for electrical connection with other circuits.

3. A display module, characterized in that, The display module includes a first screen and a second screen; The second screen is strip-shaped and surrounds the first screen. The end of the second screen away from the first screen is bent to the side of the first screen away from the light-emitting surface. The second screen includes at least one disconnection portion, which is electrically isolated from the first screen and is spliced ​​to the first screen. The first screen and the second screen are electrically isolated from each other. The light-emitting surface of the first screen is circular; before being attached to the first screen, the planar unfolded shape of the light-emitting surface of the second screen is a fan ring; after being attached to the first screen, the projection of the second screen onto the light-emitting surface of the first screen is a ring surrounding the first screen.

4. The display module according to claim 3, characterized in that, The first screen body includes a second bonding portion, and the second screen body also includes a third bonding portion, the second bonding portion and the third bonding portion being used for electrical connection with other circuits.

5. The display module according to claim 3 or 4, characterized in that, The first screen and the second screen are flexible display screens.

6. The display module according to claim 3 or 4, characterized in that, The display module further includes a light-transmitting cover plate covering the light-emitting surfaces of the first screen and the second screen, the light-transmitting cover plate including a planar area corresponding to the first screen and a curved area corresponding to the second screen.

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