Curved surface decorative cover plate and touch screen
By making pattern layers of different materials in the cover assembly and film assembly, and using transparent adhesive bonding, the problem of pattern offset of curved touch screen cover plates in the hot bending process is solved, improving aesthetics and stability .
Patent Information
- Application Number
- CN202420174348.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-24
AI Technical Summary
In the hot bending process of existing curved touch screen covers, due to the different expansion coefficients of patterns of different materials, the patterns are relatively offset, affecting the appearance effect.
Using a design that includes cover assembly and film assembly, the pattern layers of different materials are made into the cover assembly and film assembly through transparent adhesive, and the cover assembly is formed through thermal bending process, and the film assembly is based on the expansion Size design to avoid pattern offset.
It effectively avoids pattern offset, improves the aesthetics and stability of curved decorative covers, and ensures the overall effect of pattern layers of different materials.
Smart Images
Figure CN222189855U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cover plate technology, in particular to a curved surface decorative cover plate and a touch screen. Background Art
[0002] With the rapid development of touch technology, touch screen products are applied to various fields, and at the same time, higher requirements are put forward for the service effect of touch screen products. Curved touch screen products can bring people better visual and tactile experience, which is a major trend of future development. Unlike flat touch screens, curved touch screens have higher requirements for manufacturing process and greater technical difficulty, and the surface decoration of curved cover plates is one of them. The existing implementation scheme is mainly an integrated production process, which first integrates various patterns on the flat cover plate and then obtains the curved cover plate through the hot bending process.
[0003] Since different materials have different gloss and optical effects, in order to improve the aesthetics of the cover, it is often necessary to use different materials to make patterns on the cover. When the cover is hot-bent, the patterns of different materials will deform to different degrees due to different expansion coefficients, which will lead to relative offset between the patterns of different materials, and ultimately make the actual appearance of the cover differ greatly from the expected. Utility Model Content
[0004] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a curved decorative cover plate, which can avoid relative offset between patterns of different materials.
[0005] The utility model also includes a touch screen, comprising the above-mentioned curved cover plate.
[0006] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0007] A curved decorative cover plate, comprising a cover plate assembly, a film assembly and a transparent adhesive, wherein the cover plate assembly and the film assembly are relatively attached to each other through the transparent adhesive;
[0008] The cover plate assembly comprises a curved cover plate and a first pattern layer, wherein the first pattern layer is arranged on a side surface of the curved cover plate;
[0009] The film assembly comprises a flexible film and a second pattern layer, wherein the second pattern layer is arranged on one side surface of the flexible film;
[0010] The pattern layers between the first pattern layer and the second pattern layer are made of different materials.
[0011] Furthermore, one of the first pattern layer and the second pattern layer is a metal pattern layer, and the other is an oxidized metal pattern layer, an inorganic non-metallic pattern layer or an organic polymer pattern layer.
[0012] Furthermore, the first patterned layer is arranged on a surface of the curved cover plate facing the film assembly.
[0013] Furthermore, the second patterned layer is arranged on a surface of the flexible film on one side facing the cover plate assembly.
[0014] Furthermore, the film assembly further includes a coating layer, and the coating layer is arranged on a surface of the flexible film on a side facing away from the second patterned layer.
[0015] Furthermore, the coating layer includes a hardened coating.
[0016] Furthermore, the curved decorative cover plate includes a visible area and a non-visible area, and the non-visible area is located outside the visible area; the first pattern layer is arranged on a local area of the non-visible area of the curved cover plate, and the second pattern layer is arranged on a local area of the non-visible area of the flexible film; the first pattern layer and the second pattern layer together constitute the non-visible area of the curved decorative cover plate.
[0017] Furthermore, the curved cover plate includes a plane area and a curved area, and the curved area is located outside the plane area; the first pattern layer is arranged on the plane area of the curved cover plate, and the second pattern layer is arranged on the area of the flexible film corresponding to the curved area.
[0018] Furthermore, the transparent adhesive is OCA optical adhesive or OCR optical adhesive.
[0019] A touch screen comprises a touch function layer and the above-mentioned curved decorative cover plate, wherein the touch function layer is arranged on a surface of the cover plate assembly facing away from the film assembly.
[0020] The utility model has the following beneficial effects: the curved decorative cover plate of the utility model respectively makes pattern layers of different materials in the cover plate component and the film component, and then the cover plate component and the film component are relatively fitted so that the pattern layers of different materials together constitute a complete pattern; wherein the first pattern layer is first made on the flat cover plate, and then the flat cover plate with the first pattern layer is heated and bent into the curved cover plate through a hot bending process, while the second pattern layer is directly designed and made on the flexible film according to the size of the first pattern layer after heating and expansion, thereby avoiding the problem of relative displacement between the first pattern layer and the second pattern layer due to thermal expansion caused by the hot bending process of the curved cover plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the stacking structure of the curved decorative cover plates provided by the utility model before bonding.
[0022] Figure 2 This is a schematic diagram of the exploded structure of the curved decorative cover provided by the utility model before bonding.
[0023] Figure 3 This is a schematic diagram of the stacking structure of another curved decorative cover plate provided by the present invention before bonding.
[0024] Figure 4 This is a schematic diagram of the stacking structure of another curved decorative cover plate provided by the present invention before bonding.
[0025] Figure 5 This is a schematic diagram of the stacking structure of the touch screen provided by the utility model. DETAILED DESCRIPTION
[0026] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1
[0030] like Figure 1 As shown, a curved decorative cover comprises a cover assembly 11, a film assembly 12 and a transparent adhesive 13, wherein the cover assembly 11 and the film assembly 12 are relatively attached to each other through the transparent adhesive 13;
[0031] The cover plate assembly 11 includes a curved cover plate 111 and a first pattern layer 112, wherein the first pattern layer 112 is disposed on one side surface of the curved cover plate 111;
[0032] The film assembly 12 includes a flexible film 121 and a second pattern layer 122, wherein the second pattern layer 122 is disposed on one side surface of the flexible film 121;
[0033] The first pattern layer 112 and the second pattern layer 122 are pattern layers made of different materials.
[0034] The curved decorative cover of the utility model manufactures pattern layers of different materials in the cover assembly 11 and the film assembly 12 respectively, and then the cover assembly 11 and the film assembly 12 are relatively fitted so that the pattern layers of different materials together constitute a complete pattern; wherein the first pattern layer 112 is first manufactured on a flat cover, and then the flat cover with the first pattern layer 112 is heated and bent into the curved cover 111 through a hot bending process, while the second pattern layer 122 is directly designed and manufactured on the flexible film 121 according to the size of the first pattern layer 112 after heating and expansion, thereby avoiding the problem of relative displacement between the first pattern layer 112 and the second pattern layer 122 due to thermal expansion caused by the hot bending process of the curved cover 111.
[0035] The first pattern layer 112 and the second pattern layer 122 are made of different materials and have different gloss and optical effects. When used in combination, the aesthetics of the curved decorative cover plate can be greatly improved.
[0036] Among them, one of the first patterned layer 112 and the second patterned layer 122 is a metal patterned layer such as a silver patterned layer, and the other is an oxidized metal patterned layer such as an ITO patterned layer, an inorganic non-metallic patterned layer such as a silicon oxide patterned layer, or an organic polymer patterned layer such as a UV patterned layer.
[0037] like Figure 2 As shown, the curved decorative cover plate includes a visible area 101 and a non-visible area 102, and the non-visible area 102 is located outside the visible area 101; the first pattern layer 112 is arranged on a local area of the non-visible area 102 of the curved cover plate 111, and the second pattern layer 122 is arranged on a local area of the non-visible area 102 of the flexible film 121; the first pattern layer 112 and the second pattern layer 122 together constitute the non-visible area 102 of the curved decorative cover plate.
[0038] The first pattern layer 112 and the second pattern layer 122 may partially overlap or not overlap at all.
[0039] Preferably, the first pattern layer 112 is disposed on a surface of the curved cover plate 111 facing the film assembly 12 , and the second pattern layer 122 is disposed on a surface of the flexible film 121 facing the cover plate assembly 11 .
[0040] When the cover plate assembly 11 and the film assembly 12 are relatively attached to each other through the transparent adhesive 13, the first pattern layer 112 and the second pattern layer 122 are both covered by the transparent adhesive 13. The transparent adhesive 13 can protect the covered first pattern layer 112 and the second pattern layer 122 to prevent the first pattern layer 112 and the second pattern layer 122 from being corroded by water vapor and scratched by foreign objects.
[0041] In this embodiment, the curved cover plate 111 can be but not limited to a glass cover plate, a plastic cover plate or a sapphire cover plate, etc., the flexible film 121 can be but not limited to a PET film, a PI film, a PVC film, etc., and the transparent adhesive 13 can be but not limited to OCA optical adhesive or OCR optical adhesive. Embodiment 2
[0042] As an optimization solution of the first embodiment, in this embodiment, if Figure 3 As shown, the film assembly 12 further includes a coating layer 123 , and the coating layer 123 is disposed on a surface of the flexible film 121 which is opposite to the second patterned layer 122 .
[0043] The curved decorative cover of the present invention forms a coating layer 123 on the surface of the flexible film 121 by coating the surface of the flexible film 121 . The coating layer 123 improves the optical properties of the flexible film 121 , such as hardness, brightness, transmittance, etc.
[0044] In this embodiment, the coating layer 123 includes a hardened coating.
[0045] The hardened coating layer 123 can improve the surface hardness of the flexible film 121. Using the hardened coating layer 123 as the outermost layer of the curved decorative cover plate can prevent the curved decorative cover plate from being scratched by foreign objects during transportation, assembly and use.
[0046] The hardened coating may specifically be a metal material, a ceramic material, a DLC material, a sapphire material or a diamond material, among which the DLC material is a diamond-like carbon coating, which is an amorphous carbon film composed of carbon and hydrogen atoms, and generally has the characteristics of high hardness, high corrosion resistance, low friction coefficient and biocompatibility, and has physical and chemical properties similar to diamond; the sapphire material is a very rare gemstone, which has the characteristics of high hardness, high transparency and high scratch resistance, and is mainly artificial sapphire; in addition, the diamond material is a material composed of nano-scale diamond particles, whose hardness can reach 9 on the Mohs hardness scale, and is one of the hardest materials known to date, with very high wear resistance and scratch resistance, and can effectively protect the surface from scratches and wear, thereby extending the service life. Embodiment 3
[0047] As an optimization solution of Embodiment 1 or Embodiment 2, in this embodiment, if Figure 4 As shown, the curved cover plate 111 includes a plane area 113 and a curved area 114, and the curved area 114 is located outside the plane area 113; the first pattern layer 112 is arranged on the plane area 113 of the curved cover plate 111, and the second pattern layer 122 is arranged on the area of the flexible film 121 corresponding to the curved area 114.
[0048] In this embodiment, the plane area 113 is arranged on the curved cover plate 111 (the curved cover plate 111 of the first and second embodiments is entirely the curved area 114, without the plane area 113), and the first pattern layer 112 is arranged on the plane area 113 of the curved cover plate 111. Since the curved cover plate 111 is mainly heated in the curved area 114 during the hot bending process, the first pattern layer 112 located on the plane area 113 has a smaller expansion deformation during the hot bending process.
[0049] At the same time, the plane area 113 of the curved cover plate 111 is used as the visible area 101 of the curved decorative cover plate, and the curved area 114 of the curved cover plate 111 is used as the non-visible area 102 of the curved decorative cover plate, so as to reduce the degree of deformation of the display screen caused by the bending of the curved cover plate 111. Of course, the visible area 101 of the curved decorative cover plate can also be appropriately extended to the curved area 114 of the curved cover plate 111, depending on specific needs. Embodiment 4
[0050] like Figure 5 As shown, a touch screen comprises a touch function layer 2 and the curved decorative cover plate 1 described in any one of Embodiments 1 to 4, wherein the touch function layer 2 is arranged on a surface of the cover plate assembly 11 facing away from the film assembly 12 .
[0051] Specifically, the touch function layer 2 can be directly made on the side surface of the cover assembly 11 facing away from the film assembly 12, or first made on a substrate or a film, and then the substrate or film with the touch function layer 2 is adhered to the side surface of the cover assembly 11 facing away from the film assembly 12.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A curved decorative cover plate, It is characterized in that It includes a cover plate assembly, a film assembly and a transparent adhesive, wherein the cover plate assembly and the film assembly are relatively attached to each other through the transparent adhesive; The cover plate assembly comprises a curved cover plate and a first pattern layer, wherein the first pattern layer is arranged on a side surface of the curved cover plate; The film assembly comprises a flexible film and a second pattern layer, wherein the second pattern layer is arranged on one side surface of the flexible film; The pattern layers between the first pattern layer and the second pattern layer are made of different materials.
2. The curved decorative cover plate according to claim 1, It is characterized in that One of the first pattern layer and the second pattern layer is a metal pattern layer, and the other is an oxidized metal pattern layer, an inorganic non-metal pattern layer or an organic polymer pattern layer.
3. The curved decorative cover plate according to claim 1, It is characterized in that The first pattern layer is arranged on a surface of the curved cover plate facing the film assembly.
4. The curved decorative cover plate according to claim 1 or 3, It is characterized in that The second pattern layer is arranged on a surface of the flexible film facing the cover plate assembly.
5. The curved decorative cover plate according to claim 4, It is characterized in that The film assembly further comprises a coating layer, and the coating layer is arranged on a surface of the flexible film on a side facing away from the second patterned layer.
6. The curved decorative cover plate according to claim 5, It is characterized in that The coating layer includes a hardened coating.
7. The curved decorative cover plate according to claim 1, It is characterized in that The curved decorative cover plate includes a visible area and a non-visible area, and the non-visible area is located outside the visible area; the first pattern layer is arranged on a local area of the non-visible area of the curved cover plate, and the second pattern layer is arranged on a local area of the non-visible area of the flexible film; the first pattern layer and the second pattern layer together constitute the non-visible area of the curved decorative cover plate.
8. The curved decorative cover plate according to claim 1, It is characterized in that The curved cover plate includes a plane area and a curved area, and the curved area is located outside the plane area; the first pattern layer is arranged on the plane area of the curved cover plate, and the second pattern layer is arranged on the area of the flexible film corresponding to the curved area.
9. The curved decorative cover plate according to claim 1, It is characterized in that The transparent adhesive is OCA optical adhesive or OCR optical adhesive.
10. A touch screen, It is characterized in that It comprises a touch function layer and the curved decorative cover plate according to claim 1, wherein the touch function layer is arranged on a surface of the cover plate assembly facing away from the film assembly.