Cover plate assembly, cover plate assembly manufacturing method, display device and display device bonding method

Abstract

This invention discloses a cover plate assembly, a method for preparing the cover plate assembly, a display device, and a method for bonding the display device. The cover plate assembly includes: a main body portion, the main body portion including a first region and a second region at least partially surrounding the first region, the main body portion including opposing first and second surfaces; and a coated pattern portion, the coated pattern portion disposed on the first surface and located in the second region. The cover plate assembly provided by the embodiments of this invention includes a main body portion and a coated pattern portion. The coated pattern portion is the part with the desired pattern formed by a coating process. Compared with the parts in the second region formed by printing processes such as screen printing in the prior art, forming the coated pattern portion by a coating process can reduce the printing space and thickness difference, increase the display area, and reduce the edge stacking thickness while reducing the bezel. When an adhesive layer is provided on the first surface of the cover plate assembly, the problem of adhesive layer bonding bubbles can be improved, thereby improving the performance of the cover plate assembly.

Description

Technical Field

[0001] This invention belongs to the field of electronic product technology, and particularly relates to a cover plate assembly, a method for preparing the cover plate assembly, a display device, and a method for bonding the display device. Background Technology

[0002] With the advancement of technology, digital display devices such as smartphones and tablets have been widely used, and the display screen is an indispensable human-computer interaction interface in these devices. OLED (Organic Light Emitting Diode) display devices, for example, have advantages such as self-illumination, energy saving, flexibility, and good adaptability. Furthermore, these devices do not require a backlight and feature fast response times and excellent display quality, attracting user attention and being widely used in smartphones, tablets, and other terminal products.

[0003] However, due to the structural limitations of the cover plate assembly in existing display devices, the performance of the cover plate 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] This invention provides a cover plate assembly, a cover plate assembly preparation method, a display device, and a display device bonding method. By using a coating process to form a coating pattern, the printing space and thickness difference are reduced, the display area is increased, and the edge stacking thickness is reduced while the bezel is reduced. When an adhesive layer is provided on the first surface of the cover plate assembly, the problem of adhesive layer bonding bubbles can be improved, thereby improving the performance of the cover plate assembly.

[0006] In a first aspect, embodiments of the present invention provide a cover plate assembly, characterized in that it comprises:

[0007] The main body includes a first region and a second region at least partially surrounding the first region, the main body including opposing first and second surfaces; the coating pattern portion is disposed on the first surface and located in the second region.

[0008] Secondly, embodiments of the present invention provide a method for preparing a cover plate assembly, for preparing the cover plate assembly described in any of the above embodiments, comprising the following steps: providing a main body portion, the main body portion including a first region and a second region at least partially surrounding the first region, the main body portion including opposing first and second surfaces; forming a coated pattern portion on the first surface of the main body portion by a coating process, the coated pattern portion being formed in the second region.

[0009] Thirdly, embodiments of the present invention provide a display device, including: a display panel; a cover plate assembly located on the light-emitting side of the display panel, wherein a first surface of the main body portion of the cover plate assembly is located on the side of the second surface close to the display panel, and the cover plate assembly is the cover plate assembly described in any of the above embodiments.

[0010] Fourthly, embodiments of the present invention provide a method for bonding a display device, comprising: providing a display panel; providing a cover plate assembly, wherein a first surface of the main body portion of the cover plate assembly is disposed opposite to the display panel, and the cover plate assembly is the cover plate assembly described in any of the above embodiments; and aligning and bonding the cover plate assembly and the display panel with a coating pattern portion of the cover plate assembly as a reference.

[0011] Compared with related technologies, the cover plate assembly provided in this embodiment of the invention includes a main body and a coated pattern part. The coated pattern part is the part in which the desired pattern is formed by a coating process. Compared with the parts in the second area formed by printing processes such as screen printing in the prior art, the coated pattern part formed by the coating process can reduce the printing space and thickness difference, increase the display area, and reduce the edge stacking thickness while reducing the bezel. When an adhesive layer is provided on the first surface of the cover plate assembly, the problem of adhesive layer bonding bubbles can be improved, thereby improving the performance of the cover plate assembly. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

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

[0015] Figure 3 This is provided by one embodiment of the present invention. Figure 1 Schematic diagram of the cross section at point BB;

[0016] Figure 4 This is provided by one embodiment of the present invention. Figure 3 A magnified view of a section at point C;

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

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

[0019] Figure 7 This is a schematic diagram of the structure of the cover plate assembly preparation method provided in one embodiment of the present invention during the preparation process;

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

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

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

[0023] Figure 11 This is a flowchart of a display device bonding method according to an embodiment of the present invention;

[0024] Figure 12 This is a cross-sectional schematic diagram of the structure obtained in step S210 of the display device bonding method provided in an embodiment of the present invention. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0027] To better understand this invention, the following is combined with... Figures 1 to 12 The cover plate assembly, cover plate assembly preparation method, display device, and display device bonding method according to embodiments of the present invention will be described in detail.

[0028] In existing technologies, screen printing is typically used to form an ink layer on the edge of the cover plate to cover certain wiring or components. However, the ink layer formed by screen printing is relatively thick and wide, which cannot meet the requirements for thinning or narrowing the bezel, thus affecting the performance of the cover plate assembly.

[0029] To address the aforementioned issues, the cover plate assembly provided in this embodiment of the invention employs a coating process to form a coated pattern portion, thereby reducing the printing space and thickness variation. This increases the display area while simultaneously reducing the bezel and edge stacking thickness. When an adhesive layer is provided on the first surface of the cover plate assembly, the problem of adhesive layer adhesion bubbles can be improved, thus enhancing the performance of the cover plate assembly.

[0030] This invention provides a cover plate assembly 100, including: a main body 1, the main body 1 including a first region A1 and a second region A2 at least partially surrounding the first region A1, the main body 1 including a first surface F1 and a second surface F2 opposite to each other; and a coating pattern portion 2, the coating pattern portion 2 being disposed on the first surface F1 and located in the second region A2.

[0031] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the second surface F2 of a cover plate assembly 100 provided according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the first surface F1 of a cover plate assembly 100 provided according to an embodiment of the present invention; Figure 3 This is provided by one embodiment of the present invention. Figure 1 A cross-sectional view of section BB.

[0032] The cover plate assembly 100 provided in this embodiment of the invention includes a main body 1 and a coated pattern part 2. The coated pattern part 2 is the part in which the desired pattern is formed by a coating process. Compared with the part in the second area A2 formed by printing, such as screen printing, in the prior art, the coated pattern part 2 formed by the coating process can reduce the printing space and thickness difference, increase the display area, and reduce the edge stacking thickness while reducing the border. When an adhesive layer 300 is provided on the first surface F1 of the cover plate assembly 100, the problem of air bubbles in the adhesive layer 300 can be improved, thereby improving the performance of the cover plate assembly 100.

[0033] It is understood that the main body 1 includes a first region A1 and a second region A2 that at least partially surrounds the first region A1. The first region A1 may refer to the central region of the main body 1, while the second region A2 may refer to the edge region of the main body 1. Optionally, the second region A2 is set completely around the first region A1.

[0034] When the cover plate assembly 100 is applied to the display panel 200, the first surface F1 can correspond to the light-incoming surface of the main body 1 (the surface close to the display panel 200), and the second surface F2 can 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 a substrate. The thickness, width, and other dimensions of this film can reach the nanometer level. Under the premise of reducing the border, the thinning of the coating pattern part 2 can optimize the adhesion of air bubbles. The coating process can specifically include chemical coating process and physical coating process. Chemical coating process includes electroplating, chemical solution deposition, spin coating, chemical vapor deposition, plasma-enhanced chemical vapor deposition, etc., while physical coating process includes physical vapor deposition, thermal evaporation coating, etc. The preparation of the coating pattern part 2 in this embodiment can be selected according to the actual needs of forming a suitable coating process, 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, which has a relatively low cost; or it can be made of flexible materials, so that the main body 1 can be folded, thus making it applicable to flexible and foldable display devices. Specifically, the main body 1 can be made of transparent, soft, and foldable materials such as UTG (Ultra-Thin Glass), CPI (Colorless Polyimide), and PET (Polyethylene Terephthalate) to achieve the bending and folding of the main body 1, making it easy to apply to foldable display devices.

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

[0038] Specifically, by selecting 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 helps with bonding and alignment and optimizes rotation.

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

[0040] Optionally, the transparency of the coated pattern portion 2 in the first state is greater than that 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 100%, the coated pattern portion 2 is completely transparent and invisible to the user. Specifically, the state of the coated pattern portion 2 can be adjusted according to actual needs. For example, when the coated pattern portion 2 is needed for alignment, it needs to be kept in a visible state, such as the second state. In subsequent use, if the coated pattern portion 2 is not needed, it can be placed in the first state.

[0041] In some optional embodiments, the coated pattern portion 2 is transparent in a first state, and black or gray in a second state; or, the coated pattern portion 2 is colored in a second state. It is understood that the color can be any color other than black or gray, such as red, blue, green, etc.

[0042] The specific material used in the coating pattern section 2 can be adjusted so that the coating pattern section 2 appears under specific conditions, that is, it is black or gray in the second state to achieve a light-blocking effect, or the coating pattern section 2 is colored in the second state, while it is transparent in the first state and does not appear.

[0043] Optionally, in the first and second states, the coated pattern section 2 is subjected to different temperatures and / or different light sources and / or different viewing angles.

[0044] For example, the temperature in the first state can be higher than the temperature in the second state, and the material used to prepare the coating pattern part 2 can exhibit different colors at different temperatures, so that the pattern colors of the coating pattern part 2 in the first state and the second state are different.

[0045] Alternatively, other types of materials can be selected so that the material of the coating pattern part 2 displays different patterns under different light sources. For example, in the first state, white light can be used to illuminate the coating pattern part 2, while in the second state, ultraviolet light or infrared light can be used to illuminate the coating pattern part 2. The specific settings can be selected according to actual needs, and there are no special limitations.

[0046] In addition, by selecting appropriate materials, the pattern color of the coated pattern section 2 can be made to appear differently from different viewing angles, thus meeting the personalized needs of customers.

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

[0048] It is understandable that photosensitive materials, specifically photochromic materials, are materials that can change color under ultraviolet light or sunlight. When the ultraviolet light or sunlight is lost, they will return to their original color. This is used as the material for the coating pattern section 2. The light sources used for the first state and the second state are different, so that the material of the coating pattern section 2 can display different patterns under different light sources.

[0049] Thermosensitive materials specifically refer to thermochromic materials, which can repeatedly change color according to temperature changes, from colored to colorless, or from colorless to colored, with the first and second states having different temperatures.

[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 first state and the second state are realized, the material that displays different patterns in the coating pattern portion 2 can be considered to be applied to the coating pattern portion 2.

[0051] Please see Figures 1 to 2 In some optional embodiments, the cross-section of the main body 1 is circular along the direction perpendicular to the thickness direction of the cover plate assembly 100; the first region A1 is circular, the second region A2 is an annulus surrounding the first region A1, and the coating pattern portion 2 is uniformly arranged around the first region A1.

[0052] It is understood that the cross-section of the main body 1 in this embodiment is circular, which means it can be applied to circular display devices, such as wearable devices, watches, or other display devices that require a circular shape. The first area A1 is circular, and the second area A2 is an annulus surrounding the first area A1, that is, the second area A2 is exactly set around the first area A1. 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] Please see Figure 2 Optionally, the coating pattern part 2 is symmetrical about the center of the first area A1. That is, the coating pattern part 2 can be set around the center of the first area A1 in a whole circle, or it can be set only in some positions. As long as the coating pattern part 2 is symmetrical about the center of the first area A1, it is convenient for the coating pattern part 2 and the display panel 200 to be aligned and bonded, thereby improving the bonding accuracy.

[0054] Please see Figure 2In some optional embodiments, the orthographic projection shape of the coating pattern portion 2 on the main body portion 1 is at least one of a triangle, a rectangle, a circle, and a cross. It should be noted that, for ease of manufacturing, the orthographic projection shape of the coating pattern portion 2 on the main body portion 1 may only be one type, such as any one of a triangle, a rectangle, a circle, and a cross. Alternatively, for ease of grasping and identifying the coating pattern portion 2, multiple coating pattern portions 2 of different shapes may be provided simultaneously. For example, the orthographic projection shape of the coating pattern portion 2 on the main body portion 1 may simultaneously include a rectangle, a circle, etc.

[0055] Of course, in addition to the regular shape in the example above, depending on actual needs, the orthographic projection shape of the coating pattern part 2 on the main body part 1 can also be an irregular shape, which refers to those graphics that do not have regular shapes or boundaries.

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

[0057] In this embodiment, the scale markings specifically refer to markings 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 size of the scale markings 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 markings can be 1nm to 100nm along the plane parallel to the main body 1. That is, the width and thickness of the scale markings can be at the nanometer level to meet the requirements of narrow bezels and thinness.

[0058] In this embodiment, the coating pattern portion 2 is marked with scale markings on the edge of the main body portion 1 to avoid affecting the light emission effect of the first region A1.

[0059] Please see Figure 4 , Figure 4 This is provided by one embodiment of the present invention. Figure 3 A magnified view of a portion at point C; optionally, the thickness d of the coated 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 coated pattern portion 2 can be any of 5 nm, 10 nm, 15 nm, 20 nm, or 25 nm, without any particular limitation, and can be selected according to actual needs.

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

[0061] Please see Figure 5, Figure 5 This is a flowchart of a method for preparing a cover plate assembly according to an embodiment of the present invention; the present invention also provides a method for preparing a cover plate assembly 100 in any of the above embodiments, comprising the following steps:

[0062] S110: Provide a main body 1, the main body 1 including a first region A1 and a second region A2 at least partially surrounding the first region A1, the main body 1 including opposing first surfaces F1 and second surfaces F2, such as Figure 6 As shown;

[0063] S120: A coating pattern 2 is formed on the first surface F1 of the main body 1 by a coating process. The coating pattern 2 is formed in the second region A2, such as... Figure 3 As shown.

[0064] The cover plate assembly preparation method provided in this embodiment uses a coating process to form a coating pattern part 2, so as to reduce the printing space and thickness difference, increase the display area, and reduce the edge stacking thickness while reducing the border. When an adhesive layer 300 is provided on the first surface F1 of the cover plate assembly 100, the problem of air bubbles in the adhesive layer 300 can be improved, thereby improving the performance of the cover plate 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, which has a relatively low cost; or it can be made of flexible materials, so that the main body 1 can be folded, and thus can be applied to flexible and foldable display devices.

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

[0067] The coating process can specifically include chemical coating process and physical coating process. Chemical coating process includes electroplating, chemical solution deposition, spin coating, chemical vapor deposition, plasma-enhanced chemical vapor deposition, etc., while physical coating process includes physical vapor deposition, thermal evaporation coating, etc. In this embodiment, the coating pattern part 2 can be formed by selecting a suitable coating process according to actual needs, and there are no special limitations.

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

[0069] Electroplating refers to the process of depositing a thin layer of metal or alloy onto the surface of a metal or other material using the principle of electrolysis. In this embodiment, an electroplated pattern is formed on the first surface F1 of the second region A2 of the main body 1 using an electroplating process.

[0070] Electroplating is used to form the electroplated pattern part. The thickness and width of the electroplated pattern part can be controlled at the nanometer level, achieving thinning and narrowing of the bezel. This reduces the printing space and thickness difference, increases the display area, and reduces the edge stacking thickness while reducing the bezel. When an adhesive layer 300 is provided on the first surface F1 of the cover plate assembly 100, the problem of air bubbles in the adhesive layer 300 can be improved.

[0071] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of the cover plate assembly 100 preparation method provided in one embodiment of the present invention during the preparation process; in some optional embodiments, the step of forming a coating pattern portion 2 on the first surface F1 of the main body portion 1 by electroplating process, and the coating pattern portion 2 being formed in the second region A2 includes: providing a shielding fixture 3, the shielding fixture 3 including a patterned opening K; under the shielding of the shielding fixture 3, the coating pattern portion 2 material forms a coating pattern portion 2 on the first surface F1 of the main body portion 1 through the opening K, 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 part 2 can be a metal material, such as aluminum, nickel, etc. The first surface F1 of the part covered by the shielding fixture 3 will not form the coating pattern part 2, while the first surface F1 of the part corresponding to the opening K of the shielding fixture 3 forms the coating pattern part 2. That is, it can be provided that the pattern of the opening K of the shielding fixture 3 is adjusted to form the desired coating pattern part 2.

[0073] It should be noted that the shielding fixture 3 can be used to shield the clear area that does not need to be electroplated. The shape of the shielding fixture 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 area is shielded. For areas that do not need to be electroplated, the precision can be adjusted according to the material of the fixture. The shielding fixture 3 can be made of materials such as film, steel fixture, Teflon fixture, etc., without any special limitations.

[0074] Please see Figure 8 , Figure 9 as well as Figure 10 , Figure 8 This is a schematic diagram of a display device provided according to an embodiment of the present invention; Figure 9 This is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention; Figure 10This is a cross-sectional schematic diagram of a display device provided according to another embodiment of the present invention; the present invention also provides a display device, a cover plate assembly 100, located on the light-emitting side of the display panel 200, and the first surface F1 of the main body portion 1 of the cover plate assembly 100 is located on the side of the second surface F2 near the display panel 200. The cover plate assembly 100 is the cover plate assembly 100 in any of the above embodiments. The first surface F1 of the main body portion 1 of the cover plate assembly 100 is located on the side of the second surface F2 near the display panel 200, that is, the display panel 200 enters the main body portion 1 from the first surface F1 and exits from the second surface F2.

[0075] Please see Figure 9 or Figure 10 Optionally, the display panel 200 includes a display area and a non-display area disposed around the display area in at least part; 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 emitted from the display area can be emitted entirely from the first area A1 without being affected by the coating pattern portion 2 of the second area A2.

[0076] Please see Figure 8 In some optional embodiments, both the main body 1 and the display panel 200 include arc-shaped 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 adopt corresponding structures with arc edges, such as circular, double arc edge, or four arc edge structures. In this way, the problem of rotation error caused by inaccurate clamping is solved by setting the coating pattern part 2.

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

[0078] Please see Figure 9 or Figure 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. The adhesive layer 300 is at least partially located on the side of the coated pattern portion 2 away from the main body 1 and is bonded to the display panel 200.

[0079] Optionally, between the display panel and the adhesive layer 300, there may be a series of film layers such as an encapsulation layer, a touch layer, and a polarizer, with the encapsulation layer positioned closer to the display panel than the touch layer.

[0080] Optionally, the encapsulation layer is used to encapsulate and protect the display panel. The inorganic material can be silicon nitride, silicon oxide, or silicon oxynitride, and can be formed using CVD (Chemical Vapor Deposition) technology.

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

[0082] Optionally, the encapsulation layer also includes a second encapsulation layer located on the side of the first encapsulation layer facing away from the substrate. The material of the second encapsulation layer includes an organic material. The organic material can be made of resin or polymeric organic material, and can be formed using IJP (Inkjet printing) technology.

[0083] Optionally, the encapsulation layer may also include a third encapsulation layer located on the side of the second encapsulation layer away from the substrate. The material of the third encapsulation layer includes inorganic materials. Adding 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 may be the same as or different from the material of the first encapsulation layer, and there is no special limitation.

[0084] Optionally, the materials of the first encapsulation layer and the third encapsulation layer are the same, so that the first encapsulation layer and the third encapsulation layer can be manufactured using the same equipment, which can simplify the manufacturing process of the display panel.

[0085] Optionally, the touch layer is used to realize the touch function of the display device. It can be made of 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 metal materials such as molybdenum, titanium, aluminum, and silver.

[0086] Polarizing films can be used to improve display contrast, reduce interference from external light, improve viewing angles, and enhance color performance. Polarizing films are composed of multiple layers of films, 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 of display device and different requirements, other film layers, such as color filter layer, quantum dot layer, etc., can be provided between the display panel 200 and the cover plate assembly 100, without any special limitations.

[0088] It is understood that in this embodiment, in addition to the adhesive layer 300 covering the first surface F1 of the main body part 1 at the corresponding position of the coating pattern part 2, in the second area A2, the adhesive layer 300 covers the coating pattern part 2 and contacts the exposed part 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 2 formed by the coating is smaller, it can effectively reduce the air bubbles generated when the adhesive layer 300 is bonded, and improve the performance of the display device.

[0090] The adhesive layer 300 can be made of OCA (Optically Clear Adhesive). OCA adhesive is made by using optical acrylic glue as a substrate, then bonding a release film to the top and bottom layers to obtain a double-sided adhesive tape without a substrate. OCA adhesive layers have uniform thickness, high flatness, high adhesion, and strong bonding strength after bonding. Of course, other adhesive materials can also be used for adhesive layer 300, such as double-sided tape.

[0091] Please see Figure 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 located in the non-display area to facilitate alignment with the coating pattern portion 2 and achieve accurate bonding between the display panel 200 and the cover plate assembly 100. Of course, the alignment portion 210 can also be located 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 are no special limitations.

[0092] The pattern of the alignment part 210 can be selected according to the corresponding coating pattern part 2, as long as it facilitates the alignment of the two.

[0093] Please see Figure 11 , Figure 11 This is a flowchart of a display device bonding method according to one embodiment of the present invention; another embodiment of the present invention provides a display device bonding method, including:

[0094] S210: Provides a display panel 200, such as Figure 12 As shown;

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

[0096] S230: Using the coated pattern portion 2 of the cover plate assembly 100 as a reference, align and attach the cover plate assembly 100 and the display panel 200, such as... Figure 10 As shown.

[0097] In the display device bonding method provided in the embodiment of the present invention, the cover plate assembly 100 and the display panel 200 are aligned and bonded with the coating pattern portion 2 of the cover plate assembly 100 as a reference. The bonding accuracy and bonding yield are improved by utilizing the thin film layer and small width of the coating pattern portion 2.

[0098] In step S210, the display panel 200 can be an organic light-emitting diode (OLED) display panel 200, a quantum dot light-emitting diode (QLED) display panel 200, or a micro-flat panel 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 plate assembly 100 and the display panel 200 are positioned opposite each other to facilitate subsequent alignment and bonding.

[0100] In step S230, the following are included: the coating pattern part 2 includes a plurality of scale marks that are spaced apart along the outer edge of the main body part 1, and the display panel 200 includes an alignment part 210. The cover plate assembly 100 and the display panel 200 are aligned and bonded with the alignment part 210 and the scale marks as reference references.

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

[0102] The display device provided in this embodiment of the invention has the technical effects of the cover plate assembly 100 in any of the above embodiments. The explanations of the same or corresponding structures and terms in the above embodiments will not be repeated here.

[0103] The display device provided in this embodiment of the invention can be applied to mobile phones or any electronic product with display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This embodiment of the invention does not impose any special limitations on these.

[0104] The above are merely specific embodiments of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

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

Claims

1. A cover plate assembly, characterized in that, include: The main body includes a first region and a second region at least partially surrounding the first region, and the main body includes opposing first and second surfaces; A coated pattern portion is disposed on the first surface and located in the second region. The coated pattern portion includes a first state and a second state. The transparency of the coated pattern portion in the first state is greater than the transparency of the coated pattern portion in the second state. Alternatively, the coated pattern portion may be transparent in the first state, and black or gray in the second state, or colored in the second state.

2. The cover plate assembly according to claim 1, characterized in that, In the first state and the second state, the coated pattern is subjected to different temperatures and / or different light sources and / or different viewing angles.

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

4. The cover plate assembly according to claim 1, characterized in that, The material of the coated pattern includes metallic materials.

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

6. The cover plate assembly according to claim 1, characterized in that, The coating pattern is symmetrically arranged about the center of the first region.

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

8. The cover plate assembly according to claim 7, characterized in that, The coated pattern section includes multiple scale markings spaced apart along the outer edge of the main body.

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

10. The cover plate assembly according to claim 7, characterized in that, The coating pattern section includes an electroplated pattern section.

11. A method for manufacturing a cover plate assembly, used to manufacture the cover plate assembly according to any one of claims 1 to 10, characterized in that, Includes the following steps: A main body portion is provided, the main body portion including a first region and a second region at least partially surrounding the first region, the main body portion including opposing first and second surfaces; A coating pattern is formed on the first surface of the main body by a coating process, and the coating pattern is formed in the second region.

12. The method for preparing the cover plate assembly according to claim 11, characterized in that, In the step of forming a coated pattern on the first surface of the main body using a coating process, wherein the coated pattern is formed in the second region, the steps include: A coating pattern is formed on the first surface of the main body by an electroplating process, and the coating pattern is formed in the second region.

13. The method for preparing the cover plate assembly according to claim 11, characterized in that, In the step of forming a coated pattern on the first surface of the main body by an electroplating process, wherein the coated pattern is formed in the second region, the steps include: A masking fixture is provided, the masking fixture including patterned openings; Under the shielding of the shielding fixture, the coating pattern material forms a coating pattern on the first surface of the main body through the opening, and the pattern of the coating pattern corresponds to the pattern of the opening.

14. A display device, characterized in that, include: Display panel; A cover plate assembly is located on the light-emitting side of the display panel, and the first surface of the main body of the cover plate assembly is located on the side of the second surface closer to the display panel. The cover plate assembly is the cover plate assembly according to any one of claims 1 to 10.

15. The display device according to claim 14, characterized in that, The display panel includes a display area and a non-display area that is 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.

16. The display device according to claim 14, characterized in that, Both the main body and the display panel include curved edges, and the main body covers the display panel along the thickness direction of the display device.

17. The display device according to claim 14, characterized in that, It also includes an adhesive layer, which is located between the main body and the display panel and is in contact with 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. The adhesive layer is at least partially located on the side of the coated pattern portion away from the main body portion and is bonded to the display panel.

18. The display device according to claim 15, characterized in that, The display panel includes an alignment portion corresponding to the coated pattern portion.

19. A method for bonding a display device, characterized in that, include: Provide a display panel; A cover plate assembly is provided, wherein a first surface of the main body portion of the cover plate assembly is disposed opposite to the display panel, and the cover plate assembly is the cover plate assembly according to any one of claims 1 to 10; Using the coating pattern portion of the cover plate assembly as a reference, the cover plate assembly and the display panel are aligned and bonded together.

20. The display device bonding method according to claim 19, characterized in that, The step of aligning and bonding the cover plate assembly and the display panel using the coating pattern portion of the cover plate assembly as a reference includes: 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 plate assembly and the display panel are aligned and bonded using the alignment portion and the scale marks as reference bases.

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