Cover plate assembly, cover plate assembly preparation method, display device and display device laminating method

Abstract

The invention discloses a cover plate assembly, a cover plate assembly preparation method, a display device and a display device fitting method, the cover plate assembly comprises: a main body part, the main body part comprises a first area and a second area at least partially surrounding the first area, and the main body part comprises a first surface and a second surface opposite to each other; and the coating pattern part is arranged on the first surface and is positioned in the second area. The cover plate assembly provided by the embodiment of the invention comprises the main body part and the film coating pattern part, and the film coating pattern part is a part for forming a required pattern by adopting a film coating process. According to the cover plate assembly, the film plating pattern part is formed through the film plating technology, the printing space and the thickness segment difference can be reduced, the display area is increased, meanwhile, the frame is reduced, the edge stacking thickness is reduced, when the adhesive layer is arranged on the first surface of the cover plate assembly, the bonding bubble problem of the adhesive layer can be solved, and the use performance of the cover plate assembly is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and in particular relates to a cover plate assembly, a cover plate assembly preparation method, a display device, and a display device bonding method. Background Art

[0002] With the advancement of technology, digital display devices such as smart phones and tablet computers have been widely used, among which the display screen is an indispensable interpersonal communication interface in these display devices. Display devices such as OLED (Organic Light Emitting Diode) have the advantages of self-luminescence, energy saving and consumption reduction, bendability, and good flexibility. In addition, the display device realizes display without the need for a backlight source, has the characteristics of fast response speed and good display effect, and has attracted the attention of users and is widely used in terminal products such as smart phones and tablet computers.

[0003] However, due to the structural limitations of the cover assembly of the existing display device, the performance of the cover assembly cannot meet the requirements.

[0004] Therefore, there is an urgent need for a new cover plate assembly, a cover plate assembly preparation method, a display device and a display device bonding method. Summary of the invention

[0005] The embodiments of the present invention provide a cover assembly, a method for preparing a cover assembly, a display device, and a method for bonding a display device. A coating process is adopted to form a coating pattern portion to reduce printing space and thickness step difference, thereby increasing the display area while reducing the frame and the edge stacking thickness. When an adhesive layer is provided on the first surface of the cover assembly, the problem of bubbles in the adhesive layer bonding can be improved, thereby improving the performance of the cover assembly.

[0006] In a first aspect, an embodiment of the present invention provides a cover plate assembly, characterized in that it includes:

[0007] A main body portion, the main body portion includes a first area and a second area at least partially surrounding the first area, the main body portion includes a first surface and a second surface opposite to each other; a coating pattern portion, the coating pattern portion is arranged on the first surface and located in the second area.

[0008] In a second aspect, an embodiment of the present invention provides a method for preparing a cover assembly, which is used to prepare the cover assembly described in any of the above embodiments, comprising the following steps: providing a main body, the main body comprising a first area and a second area at least partially surrounding the first area, the main body comprising a first surface and a second surface relative to each other; forming a coating pattern portion on the first surface of the main body by a coating process, the coating pattern portion being formed in the second area.

[0009] In a third aspect, an embodiment of the present invention provides a display device, comprising: a display panel; a cover assembly, located on the light-emitting side of the display panel, and the first surface of the main body of the cover assembly is located on the side of the second surface close to the display panel, and the cover assembly is the cover assembly described in any of the above embodiments.

[0010] In a fourth aspect, an embodiment of the present invention provides a method for bonding a display device, comprising: providing a display panel; providing a cover plate assembly, wherein the first surface of a main body of the cover plate assembly and the display panel are arranged relative to each other, and the cover plate assembly is the cover plate assembly described in any of the above embodiments; using the coating pattern portion of the cover plate assembly as a reference datum, aligning and bonding the cover plate assembly and the display panel.

[0011] Compared with the related art, the cover assembly provided in the embodiment of the present invention includes a main body portion and a coating pattern portion, and the coating pattern portion is a portion in which the desired pattern is formed by a coating process. Compared with the components formed in the second zone by printing processes such as silk-screen printing in the prior art, the coating pattern portion formed by a coating process can reduce the printing space and thickness step difference, increase the display area, reduce the frame and reduce the edge stacking thickness. When an adhesive layer is provided on the first surface of the cover assembly, the problem of bubbles in the adhesive layer can be improved, thereby improving the performance of the cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a schematic diagram of a second surface of a cover plate assembly provided according to an embodiment of the present invention;

[0014] Figure 2 is a schematic diagram of a first surface of a cover plate assembly provided according to an embodiment of the present invention;

[0015] Figure 3 An embodiment of the present invention provides Figure 1 Schematic diagram of the cross section at BB;

[0016] Figure 4 An embodiment of the present invention provides Figure 3 A partial enlarged view of point C in the middle;

[0017] Figure 5 is a flow chart of a method for preparing a cover plate assembly according to an embodiment of the present invention;

[0018] Figure 6 is a cross-sectional schematic diagram of a structure obtained in step S110 of a method for preparing a cover plate assembly provided by an embodiment of the present invention;

[0019] Figure 7 It is a structural schematic diagram of a method for preparing a cover plate assembly provided by an embodiment of the present invention during the preparation process;

[0020] Figure 8 is a schematic diagram of a display device provided according to an embodiment of the present invention;

[0021] Fig. 9 is a cross-sectional schematic diagram of a display device provided according to an embodiment of the present invention;

[0022] Fig.10 is a cross-sectional schematic diagram of a display device provided according to another embodiment of the present invention;

[0023] Fig.11 is a flow chart of a display device bonding method provided according to an embodiment of the present invention;

[0024] Fig.12 2 is a schematic cross-sectional view of a structure obtained in step S210 of a display device bonding method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] In order to better understand the present invention, Figures 1 to 12 A cover plate assembly, a method for preparing a cover plate assembly, a display device, and a method for laminating a display device according to embodiments of the present invention are described in detail.

[0028] In the prior art, a silk screen printing process is usually used to form an ink layer on the edge of the cover to facilitate shielding of some wiring or components. However, the ink layer formed by the silk screen printing process is relatively thick and wide, which cannot meet the requirements of thinning or narrowing the frame, affecting the performance of the cover assembly.

[0029] In order to solve the above problems, the cover assembly provided in the embodiment of the present invention adopts a coating process to form a coating pattern part to reduce the printing space and thickness step difference, thereby increasing the display area while reducing the frame and the edge stacking thickness. When an adhesive layer is provided on the first surface of the cover assembly, the problem of bubbles in the adhesive layer can be improved, thereby improving the performance of the cover assembly.

[0030] An embodiment of the present invention provides a cover plate assembly 100, comprising: a main body 1, the main body 1 comprising a first area A1 and a second area A2 at least partially surrounding the first area A1, the main body 1 comprising a first surface F1 and a second surface F2 relative to each other; a coating pattern portion 2, the coating pattern portion 2 is arranged on the first surface F1 and located in the second area A2.

[0031] Please also read Figures 1 to 3 , Figure 1 is a schematic diagram of a second surface F2 of a cover plate assembly 100 provided according to an embodiment of the present invention; Figure 2 is a schematic diagram of a first surface F1 of a cover plate assembly 100 provided according to an embodiment of the present invention; Figure 3 An embodiment of the present invention provides Figure 1 Schematic diagram of the cross section at BB in the middle.

[0032] The cover assembly 100 provided in the embodiment of the present invention includes a main body portion 1 and a coating pattern portion 2, wherein the coating pattern portion 2 is a portion formed with a desired pattern by a coating process. Compared with the components formed in the second area A2 by printing processes such as silk-screen printing in the prior art, the coating pattern portion 2 formed by a coating process can reduce the printing space and thickness step difference, thereby increasing the display area while reducing the frame and the edge stacking thickness. When an adhesive layer 300 is provided on the first surface F1 of the cover assembly 100, the problem of bubbles in the adhesive layer 300 can be improved, thereby improving the performance of the cover assembly 100.

[0033] It can be understood that the main body 1 includes a first area A1 and a second area A2 at least partially surrounding the first area A1. The first area A1 may refer to the central area of ​​the main body 1, and the second area A2 may refer to the edge area of ​​the main body 1. Optionally, the second area A2 is completely arranged around the first area A1.

[0034] When the cover assembly 100 is applied to the display panel 200, the first surface F1 may correspond to the light-incoming surface of the main body 1 (the surface close to the display panel 200), and the second surface F2 may correspond to the light-emitting surface of the main body 1 (the surface away from the display panel 200).

[0035] It should be noted that the coating process refers to the technology of forming a thin film on the surface of the substrate. The thickness and width of this thin film and other dimensions can reach the nanometer level. Under the premise of reducing the frame, the thinning of the coating pattern part 2 can optimize the fitting of bubbles. The coating process can specifically include chemical coating process and physical coating process. The chemical coating process includes electroplating, chemical solution deposition, spin coating, chemical vapor deposition, plasma enhanced chemical vapor deposition, etc., while the physical coating process includes physical vapor deposition, thermal evaporation coating, etc. The preparation of the coating pattern part 2 in this embodiment can be formed by selecting a suitable coating process according to actual needs, and there is no special limitation.

[0036] The main body 1 can be made of materials such as glass with high light transmittance to protect the display panel 200. Specifically, the main body 1 can be made of rigid materials with relatively low cost; it can also be made of flexible materials so that the main body 1 can be folded, so that it can be applied to flexible and foldable display devices. Specifically, the main body 1 can be made of transparent, soft, and foldable materials such as UTG (UltraThin Glass), CPI (Colorless Polyimide), PET (Polyethylene Terephthalate), etc., to achieve the bendability and foldability of the main body 1, which is convenient for application in foldable display devices.

[0037] In some optional embodiments, the coating pattern portion 2 includes a first state and a second state, and a pattern of the coating pattern portion 2 in the first state is different from a pattern of the coating pattern portion 2 in the second state.

[0038] Specifically, by selecting the coating pattern part 2 of different materials, the coating pattern part 2 can display different patterns under different conditions, such as different temperatures, light sources, and viewing angles, which is helpful for lamination and alignment and optimization of rotation.

[0039] Optionally, the coating pattern portion 2 can display a specific pattern in both the first state and the second state, but the two patterns are different in shape, size, etc. Alternatively, the coating pattern portion 2 can only display a pattern in one of the first state and the second state, and the pattern in the other state is transparent to improve the light transmittance of the cover assembly 100.

[0040] Optionally, the transparency of the coating pattern portion 2 in the first state is greater than the transparency of the coating pattern portion 2 in the second state, that is, the lower the transparency, the clearer the pattern, the darker the color, and the better the recognizability; the higher the transparency, the lighter the color. When the transparency is equal to 100%, the coating pattern portion 2 is completely transparent and invisible to the user. Specifically, the state of the coating pattern portion 2 can be adjusted according to actual needs. For example, when the coating pattern portion 2 is needed for alignment, it is necessary to keep the coating pattern portion 2 in a visible state, for example, the second state. In the subsequent use process, if the coating pattern portion 2 is not needed, the coating pattern portion 2 can be kept in the first state.

[0041] In some optional embodiments, the coating pattern portion 2 is transparent in the first state, and is black or gray in the second state, or the coating pattern portion 2 is colorful in the second state. It can be understood that the color can be other colors besides black or gray, such as red, blue, green, etc.

[0042] The specific material used for the coating pattern portion 2 can be adjusted so that the coating pattern portion 2 is visible under specific conditions, that is, it is black or gray in the second state to achieve a shading effect, or the coating pattern portion 2 is colorful in the second state, but transparent in the first state and not visible.

[0043] Optionally, in the first state and the second state, the coating pattern portion 2 is at different temperatures, and / or different light sources, and / or different viewing angles.

[0044] For example, the temperature in the first state may be greater than the temperature in the second state, and the material used to prepare the coating pattern portion 2 may show different colors at different temperatures, so that the coating pattern portion 2 has different pattern colors in the first state and the second state.

[0045] Alternatively, other types of materials are selected so that the material of the coating pattern portion 2 shows different patterns under different light sources. For example, in the first state, white light can be used to illuminate the coating pattern portion 2, and in the second state, ultraviolet light or infrared light can be used to illuminate the coating pattern portion 2. The specific settings and selections can be made according to actual needs without special limitations.

[0046] In addition, by selecting appropriate materials, the coating pattern portion 2 can have different pattern colors at different viewing angles to meet the personalized needs of customers.

[0047] In some optional embodiments, the material of the coating pattern portion 2 includes at least one of a photosensitive material and a temperature-sensitive material.

[0048] It can be understood that the photosensitive material specifically refers to the photochromic material, which is a material that can change color under ultraviolet light or sunlight. When the ultraviolet light or sunlight is lost, it will return to its original color. This is used as the material of the coating pattern part 2. The light sources used in the first state and the second state are different, so that the material of the coating pattern part 2 shows different patterns under different light sources.

[0049] The temperature-sensitive material specifically refers to a thermochromic material, which can repeatedly change color according to changes in temperature, from colored to colorless, or from colorless to colored, and the temperatures of the first state and the second state are different.

[0050] In some optional embodiments, the material of the coating pattern portion 2 includes a metal material, such as at least one of aluminum, nickel and other metal materials. As long as the coating pattern portion 2 can achieve different patterns in the first state and the second state, any material can be considered for application to the coating pattern portion 2.

[0051] See also Figure 1 to Figure 2 In some optional embodiments, along a direction perpendicular to the thickness direction of the cover assembly 100, the cross-section of the main body 1 is circular; the first area A1 is circular, the second area A2 is a ring surrounding the first area A1, and the coating pattern portion 2 is evenly arranged around the first area A1.

[0052] It can be understood that the cross-section of the main body 1 in this embodiment is circular, that is, it can be applied to a circular display device, such as a wearable device, a watch, etc., or other display devices that require a circular shape. The first area A1 is circular, and the second area A2 is a ring surrounding the first area A1, that is, the second area A2 is completely arranged around the first area A1, and the inner diameter of the second area A2 can be equal to the diameter of the first area A1, so that the first area A1 and the second area A2 match.

[0053] See also Figure 2 Optionally, the coating pattern portion 2 is symmetrically arranged about the center of the first area A1, that is, the coating pattern portion 2 can be arranged in a circle around the center of the first area A1, or can be arranged only in part of the position. As long as the coating pattern portion 2 is symmetrically arranged about the center of the first area A1, it is convenient to align and fit the coating pattern portion 2 and the display panel 200, thereby improving the accuracy of the fitting.

[0054] See also Figure 2In some optional embodiments, the orthographic projection shape of the coating pattern portion 2 on the main body 1 is at least one of a triangle, a rectangle, a circle, and a cross. It should be noted that, for the convenience of preparation, the orthographic projection shape of the coating pattern portion 2 on the main body 1 can only adopt one shape, such as any one of a triangle, a rectangle, a circle, and a cross. Alternatively, in order to facilitate the capture and identification of the coating pattern portion 2, a plurality of coating pattern portions 2 of different shapes can also be provided at the same time. For example, the orthographic projection shape of the coating pattern portion 2 on the main body 1 can include a rectangle, a circle, etc. at the same time.

[0055] Of course, in addition to the regular shapes in the above examples, according to actual needs, the orthographic projection shape of the coating pattern portion 2 on the main body 1 may also be an irregular shape, where an irregular shape refers to a shape that does not have a regular shape or boundary.

[0056] In some optional embodiments, the coating pattern portion 2 includes a plurality of scale marks spaced apart along the outer edge of the main body portion 1 .

[0057] The scale mark in this embodiment specifically refers to a mark that can be used to determine the rotation degree of the main body 1, or the relative position of the main body 1 and the display panel 200. The specific shape and setting size of the scale mark are not particularly limited, and need to be selected according to the requirements of the actual display device. For example, when applied to a display device, the width of the scale mark can be 1nm~100nm on the basis of being parallel to the plane where the main body 1 is located, that is, the width and thickness of the scale mark can be at the nanometer level to meet the requirements of narrow frame and thinness.

[0058] In this embodiment, the coating pattern portion 2 is provided with scale marks on the edge of the main body portion 1 to avoid affecting the light emitting effect of the first area A1.

[0059] See also Figure 4 , Figure 4 An embodiment of the present invention provides Figure 3 A partial enlarged view of the portion C in the figure; Optionally, the thickness d of the coating pattern portion 2 is greater than or equal to 5 nm and less than or equal to 25 nm. For example, the thickness d of the coating pattern portion 2 can be equal to any one of 5 nm, 10 nm, 15 nm, 20 nm, and 25 nm, and there is no special limitation, and it can be selected according to actual needs.

[0060] In some optional embodiments, the coating pattern portion 2 includes an electroplating pattern portion, which is a pattern portion formed by an electroplating process, and the electroplating process refers to the process of plating a thin layer of metal or alloy on the surface of a metal or other material using the principle of electrolysis. In this embodiment, the electroplating pattern portion is formed on the first surface F1 of the second area A2 of the main body 1 by the electroplating process.

[0061] See also Figure 5, Figure 5 1 is a flow chart of a method for preparing a cover plate assembly according to an embodiment of the present invention; an embodiment of the present invention also provides a method for preparing a cover plate assembly, which is used to prepare the cover plate assembly 100 in any of the above embodiments, and comprises the following steps:

[0062] S110: Provide a main body 1, the main body 1 includes a first area A1 and a second area A2 at least partially surrounding the first area A1, and the main body 1 includes a first surface F1 and a second surface F2 opposite to each other, such as Figure 6 As shown;

[0063] S120: forming a coating pattern portion 2 on the first surface F1 of the main body 1 by a coating process, wherein the coating pattern portion 2 is formed in the second area A2. Figure 3 shown.

[0064] The method for preparing the cover assembly provided in this embodiment adopts a coating process to form a coating pattern portion 2 to reduce the printing space and thickness step difference, thereby increasing the display area while reducing the frame and the edge stacking thickness. When an adhesive layer 300 is provided on the first surface F1 of the cover assembly 100, the bubble problem of the adhesive layer 300 can be improved, thereby improving the performance of the cover assembly 100.

[0065] In step S110, the main body 1 can be made of materials such as glass with high light transmittance to protect the display panel 200. Specifically, the main body 1 can be made of rigid materials with relatively low cost; it can also be made of flexible materials so that the main body 1 can be folded, thereby being applicable to flexible and foldable display devices.

[0066] In step S120, the coating process refers to a technology for forming a thin film on the surface of the substrate. The thickness, width and other dimensions of this thin film can reach the nanometer level. On the premise of reducing the frame, the thinning of the coating pattern part 2 can optimize the bonding of bubbles.

[0067] The coating process may specifically include a chemical coating process and a physical coating process. The chemical coating process includes electroplating, chemical solution deposition, spin coating, chemical vapor deposition, plasma enhanced chemical vapor deposition, etc., while the physical coating process includes physical vapor deposition, thermal evaporation coating, etc. The coating pattern portion 2 in this embodiment can be prepared by selecting a suitable coating process according to actual needs, and there is no special limitation.

[0068] In some optional embodiments, the step of forming the coating pattern portion 2 on the first surface F1 of the main body 1 through a coating process, and the coating pattern portion 2 is formed in the second area A2, includes: forming the coating pattern portion 2 on the first surface F1 of the main body 1 through an electroplating process, and the coating pattern portion 2 is formed in the second area A2.

[0069] The electroplating process refers to a process of plating a thin layer of metal or alloy on the surface of a metal or other material using the principle of electrolysis. In this embodiment, an electroplating pattern portion is formed on the first surface F1 of the second area A2 of the main body 1 by the electroplating process.

[0070] The electroplating process is adopted to form the electroplating pattern part, and the thickness and width of the electroplating pattern part can be controlled at the nanometer level, so as to achieve thinning and narrow frame, thereby reducing the printing space and thickness step difference, increasing the display area while reducing the frame and the edge stacking thickness. When the adhesive layer 300 is provided on the first surface F1 of the cover assembly 100, the bubble problem of the adhesive layer 300 can be improved.

[0071] See also Figure 7 , Figure 7 It is a structural schematic diagram of a method for preparing a cover assembly 100 provided by an embodiment of the present invention during the preparation process; in some optional embodiments, a coating pattern portion 2 is formed on the first surface F1 of the main body 1 by an electroplating process, and the coating pattern portion 2 is formed in the second area A2 in the step of: providing a shielding jig 3, the shielding jig 3 includes a patterned opening K; under the shielding of the shielding jig 3, the coating pattern portion 2 material passes through the opening K to form the coating pattern portion 2 on the first surface F1 of the main body 1, and the pattern of the coating pattern portion 2 corresponds to the pattern of the opening K.

[0072] In this embodiment, the material of the coating pattern portion 2 can specifically be a metal material, such as aluminum, nickel and other metals. The portion of the first surface F1 blocked by the blocking fixture 3 will not form the coating pattern portion 2, while the portion of the first surface F1 corresponding to the opening K of the blocking fixture 3 will form the coating pattern portion 2, that is, the pattern of the opening K of the blocking fixture 3 can be adjusted to form the desired pattern of the coating pattern portion 2.

[0073] It should be noted that the shielding jig 3 can be used to shield the corresponding clear areas that do not require electroplating. The shape of the shielding jig 3 is adjusted according to the pattern of the coating pattern part 2, that is, the shape that needs to be electroplated is exposed, and the remaining clear areas can be used for shielding. For areas other than those that need to be electroplated, the accuracy can be adjusted according to the material of the jig. The shielding jig 3 can be in the form of films, steel jigs, Teflon jigs and other materials, and there are no special limitations.

[0074] See also Figure 8 , Fig. 9 as well as Fig.10 , Figure 8 is a schematic diagram of a display device provided according to an embodiment of the present invention; Fig. 9 is a cross-sectional schematic diagram of a display device provided according to an embodiment of the present invention; Fig.10It is a cross-sectional schematic diagram of a display device provided according to another embodiment of the present invention; the embodiment of the present invention further provides a display device, a cover assembly 100, which is located on the light-emitting side of the display panel 200, and the first surface F1 of the main body 1 of the cover assembly 100 is located on the side of the second surface F2 close to the display panel 200, the cover assembly 100 is the cover assembly 100 in any of the above embodiments, the first surface F1 of the main body 1 of the cover assembly 100 is located on the side of the second surface F2 close to the display panel 200, that is, the display panel 200 enters the main body 1 from the first surface F1 and is emitted from the second surface F2.

[0075] See also Fig. 9 or Fig.10 Optionally, the display panel 200 includes a display area and a non-display area at least partially arranged around the display area; along the thickness direction of the display device, the first area A1 of the main body 1 covers the display area, that is, the size of the first area A1 is greater than or equal to the size of the display area, so that the light output from the display area can all be emitted from the first area A1 without being affected by the coating pattern part 2 of the second area A2.

[0076] See also Figure 8 In some optional embodiments, the main body 1 and the display panel 200 both include curved edges. Along the thickness direction of the display device, the main body 1 covers the display panel 200, that is, the main body 1 and the display panel 200 correspondingly adopt a structural form with curved edges, such as a circular or double-arc edge, a four-arc edge structure, etc., and then the problem of rotation error caused by inaccurate grasping of the mark is solved by setting the coating pattern part 2.

[0077] For example, the main body 1 and the display panel 200 are both circular.

[0078] See also Fig. 9 or Fig.10 Optionally, the display device further includes an adhesive layer 300, which is located between the main body 1 and the display panel 200 and contacts the first surface F1 of the main body 1; along the thickness direction of the display device, the orthographic projection of the adhesive layer 300 on the main body 1 overlaps with the second area A2 of the main body 1, and the adhesive layer 300 is at least partially located on the side of the coating pattern portion 2 away from the main body 1, and is bonded to the display panel 200.

[0079] Optionally, a packaging layer, a touch layer, a polarizer and other film layers may be stacked in sequence between the display panel and the adhesive layer 300 , and the packaging layer is arranged closer to the display panel than the touch layer.

[0080] Optionally, the encapsulation layer is used to encapsulate and protect the display panel, and the inorganic material may specifically be silicon nitride, silicon oxide, silicon oxynitride and the like, and may specifically be formed by a CVD (Chemical Vapor Deposition) process.

[0081] Optionally, the encapsulation layer includes a first encapsulation layer, and a material of the first encapsulation layer includes an inorganic material.

[0082] Optionally, the encapsulation layer further comprises a second encapsulation layer located on a side of the first encapsulation layer away from the substrate, and the material of the second encapsulation layer comprises an organic material. The organic material can be made of resin or polymer organic material, and can be formed by IJP (Inkjet printing) process.

[0083] Optionally, the encapsulation layer also includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate, and the material of the third encapsulation layer includes an inorganic material. Continuing to add an inorganic encapsulation layer outside the organic encapsulation layer can further improve the encapsulation effect of the encapsulation layer; in this embodiment, the material of the third encapsulation layer can be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0084] Optionally, the material of the first encapsulation layer is the same as the material of the third encapsulation layer, so that the first encapsulation layer and the third encapsulation layer can be prepared using the same equipment, which can simplify the preparation process of the display panel.

[0085] Optionally, the touch layer is used to realize the touch function of the display device, and can be prepared by ITO (Indium Tin Oxide) material. ITO has high light transmittance, which can effectively improve the light transmittance of the display panel and ensure the display effect. Of course, the touch layer can also be made of other materials, such as molybdenum, titanium, aluminum, silver and other metal materials.

[0086] Polarizers can be used to increase display contrast, reduce external light interference, improve viewing angles and enhance color performance. Polarizers are made of multiple layers of film, mainly including PVA (Polyvinyl Alcohol) film, TAC (Tri-cellulose Acetate) film, protective film, release film and pressure-sensitive adhesive.

[0087] Of course, depending on the specific type and requirements of the display device, other film layers, such as a color film layer, a quantum dot layer, etc., may be provided between the display panel 200 and the cover assembly 100 without any special limitation.

[0088] It can be understood that in this embodiment, except for the corresponding position of the coating pattern part 2, the adhesive layer 300 entirely covers the first surface F1 of the main body 1. In the second area A2, the adhesive layer 300 covers the coating pattern part 2 and contacts the exposed portion of the first surface F1 of the coating pattern part 2 to ensure the bonding effect.

[0089] Since the thickness d of the coating pattern portion 2 formed by coating is smaller, bubbles generated when the adhesive layer 300 is attached can be effectively reduced, thereby improving the use effect of the display device.

[0090] The adhesive layer 300 may be made of OCA (Optically Clear Adhesive). OCA adhesive is a double-sided adhesive tape without a base material obtained by making optical acrylic adhesive into a base material, and then laminating a layer of release film on the upper and lower base layers. The adhesive layer of OCA has uniform thickness and high flatness; it has high adhesion and high bonding strength after lamination. Of course, the adhesive layer 300 may also be made of adhesive layers of other materials, such as double-sided tape.

[0091] See also Fig.10 In some optional embodiments, the display panel 200 includes an alignment portion 210 corresponding to the coating pattern portion 2. The alignment portion 210 can be arranged in a non-display area to facilitate alignment with the coating pattern portion 2 to achieve accurate fitting of the display panel 200 and the cover assembly 100. Of course, the alignment portion 210 can also be arranged in the display area of ​​the display panel 200, as long as it does not affect the normal display of the display area, and there is no special limitation.

[0092] The pattern of the alignment portion 210 can be selected according to the corresponding plating pattern portion 2 as long as it is convenient for the two to be aligned.

[0093] See also Fig.11 , Fig.11 : is a flow chart of a display device bonding method provided according to an embodiment of the present invention; the embodiment of the present invention further provides a display device bonding method, comprising:

[0094] S210: Provide a display panel 200, such as Fig.12 As shown;

[0095] S220: Provide a cover assembly 100, wherein the first surface F1 of the main body 1 of the cover assembly 100 and the display panel 200 are arranged opposite to each other, and the cover assembly 100 is the cover assembly 100 in any of the above embodiments, such as Figure 3 As shown;

[0096] S230: Using the coating pattern portion 2 of the cover assembly 100 as a reference, align and bond the cover assembly 100 and the display panel 200. Fig.10 shown.

[0097] In the display device bonding method provided in the embodiment of the present invention, the coating pattern portion 2 of the cover assembly 100 is used as a reference, and the cover assembly 100 and the display panel 200 are aligned and bonded, and the thin film layer and small width of the coating pattern portion 2 are utilized to improve the bonding accuracy and bonding yield.

[0098] In step S210, the display panel 200 may be an organic light-emitting diode (OLED) display panel 200, a quantum dot light-emitting diode (QLED) or a micro flat display panel 200 (Micro-OLED or Micro-LED), etc.

[0099] In step S220 , the first surface F1 of the main body 1 of the cover assembly 100 and the display panel 200 are arranged opposite to each other to facilitate subsequent alignment and lamination.

[0100] In step S230, it includes: the coating pattern portion 2 includes a plurality of scale marks spaced apart along the outer edge of the main body portion 1, and the display panel 200 includes an alignment portion 210. The cover assembly 100 and the display panel 200 are aligned and bonded using the alignment portion 210 and the scale marks as reference datums.

[0101] During the bonding process, the relative positions of the alignment portion 210 and the scale mark can be aligned to achieve high-precision bonding of the cover assembly 100 and the display panel 200, thereby improving the bonding accuracy and bonding yield.

[0102] The display device provided by the embodiment of the present invention has the technical effects of the technical solution of the cover assembly 100 in any of the above embodiments, and the explanations of the structures and terms that are the same as or corresponding to the above embodiments are not repeated here.

[0103] The display device provided in the embodiment of the present invention can be applied to a mobile phone, or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present invention does not make any special limitations on this.

[0104] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the location process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

[0105] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

Claims

1. A cover plate assembly, characterized in that: include: a main body portion, the main body portion comprising a first region and a second region at least partially surrounding the first region, the main body portion comprising first and second opposite surfaces; The coating pattern portion is disposed on the first surface and located in the second area.

2. The cover plate assembly according to claim 1, characterized in that: The plating pattern portion includes a first state and a second state, and a pattern of the plating pattern portion in the first state is different from a pattern of the plating pattern portion in the second state.

3. The cover plate assembly according to claim 2, characterized in that: The transparency of the plating pattern portion in the first state is greater than the transparency of the plating pattern portion in the second state.

4. The cover plate assembly according to claim 2, characterized in that: The coating pattern portion is transparent in the first state, and is black or gray in the second state, or the coating pattern portion is colorful in the second state.

5. The cover plate assembly according to claim 2, characterized in that: In the first state and the second state, the coating pattern portion is at different temperatures, and / or different light sources, and / or different viewing angles.

6. The cover plate assembly according to claim 1, characterized in that: The material of the plating pattern portion includes at least one of a photosensitive material and a temperature-sensitive material.

7. The cover plate assembly according to claim 1, characterized in that: The material of the plating pattern portion includes a metal material.

8. The cover plate assembly according to claim 1, characterized in that: Along a direction perpendicular to the thickness direction of the cover plate assembly, the cross section of the main body is circular; The first area is circular, the second area is a ring surrounding the first area, and the coating pattern portion is evenly arranged around the first area.

9. The cover plate assembly according to claim 1, characterized in that: The plating pattern portion is symmetrically arranged about the center of the first area.

10. The cover plate assembly according to claim 1, characterized in that: The orthographic projection shape of the plating pattern portion on the main body portion is at least one of a triangle, a rectangle, a circle, and a cross.

11. The cover plate assembly according to claim 10, characterized in that: The coating pattern portion includes a plurality of scale marks spaced apart along the outer edge of the main body portion.

12. The cover plate assembly according to claim 1, characterized in that: The thickness of the plating pattern portion is greater than or equal to 5 nm and less than or equal to 25 nm.

13. The cover plate assembly according to claim 10, characterized in that: The plating pattern portion includes an electroplating pattern portion.

14. A method for preparing a cover plate assembly, used for preparing the cover plate assembly according to any one of claims 1 to 13, characterized in that: The following steps are involved: providing a main body portion, the main body portion comprising a first region and a second region at least partially surrounding the first region, the main body portion comprising first and second opposing surfaces; A plating pattern portion is formed on the first surface of the main body by a plating process, and the plating pattern portion is formed in the second area.

15. The method for preparing a cover plate assembly according to claim 14, characterized in that: The step of forming a coating pattern portion on the first surface of the main body by a coating process, wherein the coating pattern portion is formed in the second area, comprises: A plating pattern portion is formed on the first surface of the main body by an electroplating process, and the plating pattern portion is formed in the second area.

16. The method for preparing a cover plate assembly according to claim 14, characterized in that: The step of forming a coating pattern portion on the first surface of the main body by an electroplating process, wherein the coating pattern portion is formed in the second area, comprises: Providing a shielding fixture, the shielding fixture comprising a patterned opening; Under the shielding of the shielding fixture, the material of the coating pattern portion forms a coating pattern portion on the first surface of the main body through the opening, and the pattern of the coating pattern portion corresponds to the pattern of the opening.

17. A display device, characterized in that: include: Display panel; A cover assembly is located on the light emitting side of the display panel, and the first surface of the main body of the cover assembly is located on the side of the second surface close to the display panel. The cover assembly is the cover assembly according to any one of claims 1 to 13.

18. The display device according to claim 17, characterized in that: The display panel includes a display area and a non-display area at least partially surrounding the display area; Along the thickness direction of the display device, the first area of ​​the main body covers the display area.

19. The display device according to claim 17, characterized in that: The main body and the display panel both include arc-shaped edges, and along the thickness direction of the display device, the main body covers the display panel.

20. The display device according to claim 17, characterized in that Also includes an adhesive layer, the adhesive layer is located between the main body and the display panel and contacts the first surface of the main body; Along the thickness direction of the display device, the orthographic projection of the adhesive layer on the main body overlaps with the second area of ​​the main body, and the adhesive layer is at least partially located on the side of the coating pattern portion away from the main body and is bonded to the display panel.

21. The display device according to claim 18, characterized in that The display panel includes an alignment portion arranged corresponding to the coating pattern portion.

22. A display device bonding method, characterized in that: include: providing a display panel; A cover plate assembly is provided, wherein a first surface of a main body of the cover plate assembly is arranged opposite to the display panel, and the cover plate assembly is the cover plate assembly according to any one of claims 1 to 14; The cover plate assembly and the display panel are aligned and bonded with each other using the coating pattern portion of the cover plate assembly as a reference.

23. The display device bonding method according to claim 22, characterized in that: The step of aligning and laminating the cover plate assembly and the display panel with the coating pattern portion of the cover plate assembly as a reference comprises: The coating pattern portion includes a plurality of scale marks spaced apart along the outer edge of the main body portion, and the display panel includes an alignment portion. The cover assembly and the display panel are aligned and bonded using the alignment portion and the scale marks as reference datums.

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