Cover plate, display device and wearable equipment

Abstract

The utility model discloses a cover plate, a display device and wearable equipment, and the cover plate is of a spherical curved surface structure and comprises a first cover plate part and a second cover plate part, and the second cover plate part at least partially surrounds the periphery of the first cover plate part and is connected with the first cover plate part. The cover plate provided by the utility model can improve the product yield.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a cover plate, a display device and a wearable device. Background Art

[0002] With the advancement of technology, smart phones, tablet computers, smart watches and other devices have been widely used. Among them, the display device is an indispensable interpersonal communication interface in these devices. In the display device, the cover plate can play a protective role and extend the service life of the display device, but the performance and yield of the cover plate need to be further improved. Utility Model Content

[0003] The present application provides a cover plate, a display device and a wearable device, which can improve product yield.

[0004] According to a first aspect of an embodiment of the present application, a cover plate is provided, which has a spherical curved surface structure and includes: a first cover plate portion; and a second cover plate portion, which is at least partially arranged around the periphery of the first cover plate portion and connected to the first cover plate portion.

[0005] In one embodiment, the first cover plate portion and the second cover plate portion are made of different materials; preferably, the material of the first cover plate portion includes glass; preferably, the material of the second cover plate portion includes ceramic.

[0006] In one embodiment, the first cover plate portion and / or the second cover plate portion are made of transparent material; preferably, the material of the first cover plate portion and / or the second cover plate portion includes glass; preferably, the first cover plate portion includes glass, and the material of the second cover plate portion includes ceramic.

[0007] In one embodiment, the first cover plate portion and the second cover plate portion are connected via a colloid; preferably, the material of the colloid is a light-shielding material.

[0008] In one embodiment, the first cover portion includes a main body and a flange protruding from the outer side wall of the main body, the second cover portion is arranged around the periphery of the main body, and the inner side wall of the second cover portion is provided with a step portion overlapping the flange; preferably, the main body and the flange are made of the same material; preferably, the main body and the flange are integrally formed.

[0009] In one embodiment, the convex surface of the cover plate includes a first surface of the first cover plate portion and a second surface of the second cover plate portion, wherein the first surface and the second surface are on the same spherical surface.

[0010] In one embodiment, an escape groove is provided on the inner side wall of the second cover plate portion.

[0011] In one embodiment, the groove depth of the cover plate is a first groove depth, and the groove depth of the first cover plate portion is a second groove depth, wherein the second groove depth is greater than the difference between the first groove depth and the second groove depth; preferably, the first groove depth ranges from 1.5 to 5.0 mm; and the second groove depth ranges from 1.0 to 4.0 mm.

[0012] A second aspect of the embodiments of the present application provides a display device, comprising a display panel and the cover plate in any one of the above embodiments, wherein the concave surface of the cover plate is a fitting surface, and the display panel is fitted to the fitting surface.

[0013] In one embodiment, the display panel is a flexible display panel.

[0014] A third aspect of an embodiment of the present application provides a wearable device, comprising the display device in any one of the above embodiments.

[0015] In one embodiment, the wearable device is a smart watch or a smart bracelet.

[0016] The beneficial effect is: the present application adopts a separate design for the cover plate, which is arranged to include a first cover plate portion and a second cover plate portion that are interconnected. Compared with the related art in which the cover plate is an integral structure, the present application can reduce the groove depth of the first cover plate portion and reduce the curvature of the first cover plate portion, which can not only ensure the overall performance of the cover plate, but also reduce the difficulty of preparation and improve the production yield of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 This is a schematic structural diagram of an embodiment of a cover plate of the present application;

[0019] Figure 2 It is a simple side view of a cover plate in the prior art;

[0020] Figure 3 yes Figure 1 A simple side view of the middle cover;

[0021] Figure 4 yes Figure 1 A schematic structural diagram of the first cover plate portion;

[0022] Figure 5 yes Figure 1 A schematic diagram of the structure of the second cover plate portion;

[0023] Figure 6 yes Figure 1 A cross-sectional view of the middle cover along section line AA;

[0024] Figure 7 yes Figure 1 Schematic diagram of the structure when the middle cover is at another angle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0027] See also Figure 1 In one embodiment of the present application, the cover plate 100 is a spherical curved surface structure, and its orthographic projection on a horizontal plane is circular or quasi-circular, and the cover plate 100 has a convex surface and a concave surface disposed opposite to each other. When the cover plate 100 is applied to a display device, the concave surface of the cover plate 100 is used as a bonding surface to bond with the display panel. The display device can be specifically applied to wearable devices, such as smart watches or smart bracelets.

[0028] The cover plate 100 in the present application adopts a split design, and the cover plate 100 includes a first cover plate portion 110 and a second cover plate portion 120. The first cover plate portion 110 is light-transmissive, so that the user can observe the image displayed by the display panel through the first cover plate portion 110, and the second cover plate portion 120 is at least partially arranged around the periphery of the first cover plate portion 110 and connected to the first cover plate portion 110. Specifically, the second cover plate portion 120 can protect the first cover plate portion 110.

[0029] See also Figure 2In the related art, an integrated molding technology is usually used to form a cover plate 10 with a spherical curved surface structure, that is, the cover plate 10 is an integral structure. At this time, the deep groove and large curvature of the cover plate 10 will cause a serious loss in the yield of the spherical spiral pattern of the cover plate 10, and the yield of the cover plate 10 is low. At the same time, due to process problems, the groove depth of the cover plate 10 is limited.

[0030] See also Figure 3 In this embodiment, the overall structure of the cover plate 10 in the prior art is split and a new cover plate 100 is designed. The cover plate 100 adopts a separate design. The first cover plate portion 110 and the second cover plate portion 120 are separately processed and assembled together. In other words, the cover plate 100 is not formed in one piece, so that the spherical groove depth of the first cover plate portion 110 is less than Figure 2 The spherical groove depth of the middle cover plate 10 can reduce the probability of spherical spiral pattern defects, ensure product yield, and improve the adhesion between the cover plate 100 and the display panel. At the same time, since the separate design can also reduce the difficulty of the manufacturing process, the solution of the present application can also increase the groove depth of the cover plate 100 to ensure the visual perception effect of the cover plate 100 in various forms.

[0031] During the assembly process, the first cover plate portion 110 and the second cover plate portion 120 can be assembled together manually, or the first cover plate portion 110 and the second cover plate portion 120 can be assembled together by a machine in order to improve efficiency. When the machine is used for assembly, a camera can be used to photograph and locate the first cover plate portion 110 and the second cover plate portion 120. When the image recognition technology recognizes that the centers of the first cover plate portion 110 and the second cover plate portion 120 coincide, it is determined that the relative position between the first cover plate portion 110 and the second cover plate portion 120 is accurate. Finally, the machine fits and assembles the first cover plate portion 110 and the second cover plate portion 120 together.

[0032] In one embodiment, the first cover plate portion 110 and the second cover plate portion 120 are made of different materials, so that the cover plate 100 can have the superior performance of multiple materials and avoid the single performance caused by a single material. In one embodiment, the material of the first cover plate portion 110 includes glass, and the material of the second cover plate portion 120 includes ceramic.

[0033] Specifically, glass has high light transmittance and high hardness, so setting the material of the first cover plate portion 110 to include glass can not only ensure the display clarity of the display device, but also improve the drop resistance and scratch resistance of the display device. At the same time, ceramics have the advantages of good surface strength, high hardness, and strong ductility, so setting the material of the second cover plate portion 120 to include ceramics can increase the hardness, strength, and feel of the cover plate 100.

[0034] Of course, in other embodiments, the materials of the first cover plate portion 110 and the second cover plate portion 120 may also be other materials. For example, the material of the first cover plate portion 110 includes sapphire, which further improves the light transmittance and hardness of the first cover plate portion 110; the material of the second cover plate portion 120 includes resin, which is flexible and can improve the protection performance of the second cover plate portion 120 on the first cover plate portion 110 and improve the drop resistance of the cover plate 100, or the material of the second cover plate portion 120 includes metal material. In short, the materials of the first cover plate portion 110 and the second cover plate portion 120 can be set according to needs, and this application does not limit the specific materials.

[0035] Of course, in other embodiments, the materials of the first cover portion 110 and the second cover portion 120 may also be the same, and the first cover portion 110 and / or the second cover portion 120 may use transparent materials. For example, the materials of the first cover portion 110 and the second cover portion 120 are both glass. During the preparation process, the first cover portion 110 and the second cover portion 120 are first prepared separately using glass, and then the first cover portion 110 and the second cover portion 120 are assembled together.

[0036] In one embodiment, the first cover portion 110 is made of a transparent material to ensure the light transmittance of the first cover portion 110 and the clarity of the display of the display device.

[0037] In one embodiment, in order to achieve a narrow frame of the display device and increase the display area of ​​the display device, the second cover portion 120 is also made of a transparent material, so that the user can also observe the image displayed by the display panel through the second cover portion 120. In other embodiments, the second cover portion 120 can also be a light shielding structure, in which case the second cover portion 120 can be used to shield the peripheral wiring of the display panel below to avoid light leakage.

[0038] Among them, when the materials of the first cover portion 110 and the second cover portion 120 are both transparent materials, the material of the first cover portion 110 may include glass, and the material of the second cover portion 120 may include glass; or when the first cover portion 110 is made of transparent material and the second cover portion 120 is a shading structure, the material of the second cover portion 120 may also include ceramics; or when the first cover portion 110 is a shading structure and the second cover portion 120 is made of transparent material, the material of the first cover portion 110 may include ceramics, and the material of the second cover portion 120 may include glass, which is not limited here.

[0039] In one embodiment, in order to ensure the connection strength between the first cover plate portion 110 and the second cover plate portion 120, the first cover plate portion 110 and the second cover plate portion 120 are connected by a colloid. The colloid may be a water-based glue or a double-sided glue. In one application scenario, the colloid may be an OCA (Optically Clear Adhesive) optical glue. When the colloid is a water-based glue, the first cover plate portion 110 and the second cover plate portion 120 may be bonded together by a glue dispensing process during preparation. In one application scenario, in order to prevent light leakage from the display device, the material of the colloid may also be a light-shielding material.

[0040] In other embodiments, there may be no colloid between the first cover portion 110 and the second cover portion 120 , and in this case, the first cover portion 110 and the second cover portion 120 are directly connected via a mechanical structure.

[0041] In one embodiment, the first cover plate portion 110 and the second cover plate portion 120 may also be connected together by melting and solidifying. In this case, during preparation, the edges of the first cover plate portion 110 and / or the second cover plate portion 120 may be melted by methods including but not limited to laser scanning. After the melted portion solidifies, the first cover plate portion 110 and the second cover plate portion 120 can be fixedly connected together.

[0042] Combination Figures 4 to 6 The first cover portion 110 includes a main body 111 and a flange 112 protruding from the outer wall of the main body 111 , the second cover portion 120 is arranged around the outer periphery of the main body 111 , and the inner wall of the second cover portion 120 is provided with a step portion 121 overlapping with the flange 112 .

[0043] Specifically, the flange 112 is an annular structure and is disposed on the outer side wall of the main body 111. After the first cover plate portion 110 and the second cover plate portion 120 are assembled together, the second cover plate portion 120 is also disposed around the outer periphery of the main body 111, and at this time, the step portion 121 on the inner side wall of the second cover plate portion 120 overlaps with the flange 112 to limit the position of the first cover plate portion 110 and prevent the first cover plate portion 110 from being separated from the open position of the second cover plate portion 120. It can be understood that after the cover plate 100 is attached to the display panel, the overlap of the flange 112 and the step portion 121 can also prevent the first cover plate portion 110 from being separated from the second cover plate portion 120.

[0044] The main body 111 and the flange 112 are made of the same material to reduce the cost. For example, the main body 111 and the flange 112 are made of glass.

[0045] In order to ensure the connection strength, the main body 111 and the flange 112 are integrally formed. Of course, in other embodiments, the main body 111 and the flange 112 can also be independent structures, and the two are connected together by means such as gluing.

[0046] Continue reading Figure 1 The convex surface of the cover 100 includes a first surface 1101 of the first cover portion 110 and a second surface 1201 of the second cover portion 120, wherein the first surface 1101 and the second surface 1201 are smoothly connected, that is, there is no height difference between the first surface 1101 and the second surface 1201, and both are on the same spherical surface to ensure the roundness of the convex surface of the cover 110 and improve the feel of the cover 110 when used.

[0047] In other embodiments, the first surface 1101 of the first cover portion 110 and the second surface 1201 of the second cover portion 120 may not be smoothly connected, which can enhance the fun of touching the cover 110 .

[0048] Continue reading Figure 3 The groove depth of the cover plate 100 is the first groove depth H1, the groove depth of the first cover plate portion 110 is the second groove depth H2, and the third groove depth H3 is the difference between the first groove depth H1 and the second groove depth H2, that is, H3=H1-H2. In one embodiment, the second groove depth H2 is greater than the third groove depth H3. At this time, the area of ​​the first surface 1101 of the first cover plate portion 110 is greater than the area of ​​the second surface 1201 of the second cover plate portion 120. The first cover plate portion 110 is the main structure of the cover plate 100.

[0049] In other embodiments, when the second cover portion 120 is light-transmissive, the third groove depth H3 may also be greater than or equal to the second groove depth H2.

[0050] In one embodiment, the first groove depth H1 ranges from 1.5 to 5.0 mm, for example, the first groove depth H1 is specifically 1.5 mm, 3.0 mm, 4.25 mm or 5.0 mm, and the second groove depth H2 ranges from 1.0 to 4.0 mm, for example, the second groove depth H2 is specifically 1.0 mm, 2.0 mm, 3.0 mm, 3.25 mm or 4.0 mm. The specific values ​​of the first groove depth H1 and the second groove depth H2 can be set according to actual needs and are not limited here.

[0051] See also Figure 5 as well as Figure 7 The inner side wall of the second cover plate portion 120 is provided with an escape groove 1202 to escape the flexible circuit board bonded with the display panel and prevent the second cover plate portion 120 from squeezing the flexible circuit board. Of course, in other embodiments, the inner side wall of the second cover plate portion 120 may not be provided with the escape groove 1202.

[0052] The present application also protects a display device, which includes a cover plate 100 and a display panel attached to the concave surface of the cover plate 100. The specific structure of the cover plate 100 can be found in the above-mentioned related content and will not be described in detail here.

[0053] In one embodiment, the above-mentioned display panel is a flexible display panel, for example, the display panel is an OLED display panel (Organic Light-Emitting Diode). In another embodiment, the display panel can also be an LCD display panel (Liquid Crystal Display), or it can also be a Mirco-LED display panel (Micro Light Emitting Diode). The present application does not limit the specific type of the display panel.

[0054] The present application also protects a wearable device, which includes the above-mentioned display device. The second cover portion 120 can be fixedly connected to the frame of the wearable device by gluing. For example, the second cover portion 120 is fixed to the frame of the wearable device by foam glue or injection glue. The wearable device can be a smart watch or a smart bracelet, and the present application does not limit the specific type of the wearable device.

[0055] Of course, the display device of the present application can also be applied to other devices and is not limited to wearable devices.

[0056] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cover plate, characterized in that: The cover plate has a spherical curved surface structure and comprises: a first cover plate portion; The second cover plate portion is at least partially disposed around the periphery of the first cover plate portion and is connected to the first cover plate portion.

2. The cover plate according to claim 1, characterized in that: The first cover plate portion and the second cover plate portion are made of different materials.

3. The cover plate according to claim 2, characterized in that: The material of the first cover plate portion includes glass, or the material of the second cover plate portion includes ceramic.

4. The cover plate according to claim 1, characterized in that: The first cover plate portion and / or the second cover plate portion are made of transparent material.

5. The cover plate according to claim 4, characterized in that: The material of the first cover plate portion and / or the second cover plate portion includes glass.

6. The cover plate according to claim 4, characterized in that: The first cover plate portion includes glass, and the material of the second cover plate portion includes ceramic.

7. The cover plate according to claim 1, characterized in that: The first cover plate portion and the second cover plate portion are connected via colloid.

8. The cover plate according to claim 7, characterized in that: The material of the colloid is a light-shielding material.

9. The cover plate according to claim 1, characterized in that: The first cover plate portion includes a main body portion and a flange protruding from an outer side wall of the main body portion, the second cover plate portion is arranged around the periphery of the main body portion, and an inner side wall of the second cover plate portion is provided with a step portion overlapping with the flange.

10. The cover plate according to claim 9, characterized in that: The main body portion and the flange are made of the same material.

11. The cover plate according to claim 10, characterized in that: The main body and the flange are integrally formed.

12. The cover plate according to claim 1, characterized in that: The convex surface of the cover plate includes a first surface of the first cover plate portion and a second surface of the second cover plate portion, wherein the first surface and the second surface are on the same spherical curved surface.

13. The cover plate according to claim 1, characterized in that: An escape groove is provided on the inner side wall of the second cover plate portion.

14. The cover plate according to claim 1, characterized in that: The groove depth of the cover plate is a first groove depth, and the groove depth of the first cover plate portion is a second groove depth, wherein the second groove depth is greater than a difference between the first groove depth and the second groove depth.

15. The cover plate according to claim 14, characterized in that: The first groove depth ranges from 1.5 to 5.0 mm; the second groove depth ranges from 1.0 to 4.0 mm.

16. A display device, characterized in that: The display device comprises a display panel and the cover plate according to any one of claims 1 to 15, wherein the concave surface of the cover plate is a fitting surface, and the display panel is fitted to the fitting surface.

17. The display device according to claim 16, characterized in that: The display panel is a flexible display panel.

18. A wearable device, characterized in that: Comprising the display device according to any one of claims 16 to 17.

19. The wearable device according to claim 18, characterized in that: The wearable device is a smart watch or a smart bracelet.

Images