Manufacturing method of touch display device and touch display device

Abstract

The invention relates to the technical field of touch display device manufacturing, in particular to a manufacturing method of a touch display device and the touch display device. In the process of fixedly connecting a shell and a cover plate, various forms of stress can be generated due to factors such as assembly precision. According to the application, before the bonding layer is subjected to curing treatment, namely under the condition that the bonding layer is still in a wet state, the shell and the cover plate are fixedly connected, in the state, the bonding layer can be regarded as a buffer layer, and the bonding layer can absorb the stress in various forms through the generated deformation; therefore, the risk that the display panel is damaged by stress is reduced, the display effect of the touch display device is optimized, and the production yield of the touch display device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch display devices, and in particular to a manufacturing method of a touch display device and the touch display device. BACKGROUND

[0002] In the production process of a liquid crystal display device, the assembly of a display panel is a key step. When the display panel is installed into a housing, the cover plate of the display panel needs to be fixed with the housing. However, various problems may occur in the assembly process, such as light leakage and yellow spot phenomenon, which affect the display effect and result in a low production yield of the touch display device. SUMMARY

[0003] Therefore, the present application provides a manufacturing method of a touch display device to improve the display effect of the touch display device and further improve the production yield of the touch display device.

[0004] According to an aspect of the present application, a manufacturing method of a touch display device is provided, which includes:

[0005] providing a display panel, a cover plate and a housing; the cover plate has a first side and a second side arranged oppositely;

[0006] arranging an adhesive layer on the cover plate or the display panel, the first side of the cover plate is attached to the display panel to form an initial assembly; the display panel, the cover plate and the adhesive layer jointly enclose a glue injection space;

[0007] fixing the housing and the first side of the cover plate in the initial assembly to form an initial combination; the housing and the cover plate jointly enclose a receiving cavity, the housing has a first glue injection port communicating with the receiving cavity, the adhesive layer has a second glue injection port communicating with the receiving cavity and the glue injection space, and the display panel is arranged in the receiving cavity;

[0008] performing a curing process on the adhesive layer in the initial combination to form a combination from the initial combination;

[0009] inserting a glue injection member into the first glue injection port and the second glue injection port, filling the optical glue into the glue injection space of the combination through the glue injection member, curing the optical glue, and forming the touch display device.

[0010] In one embodiment, the curing process on the adhesive layer in the initial combination to form a combination from the initial combination includes:

[0011] placing the initial combination at a temperature of 20-25 degrees Celsius for 23-25 hours to cure the adhesive layer and form the combination from the initial combination; the adhesive layer is made of room temperature vulcanized silicone rubber.

[0012] In one of the embodiments, the first side of the cover plate in the initial assembly is fixedly connected with the shell to form an initial combination, comprising:

[0013] A plurality of first mounting holes are formed in the shell in the circumferential direction, and a plurality of second mounting holes are formed in the cover plate in the circumferential direction. The connecting piece is arranged in the first mounting hole and the second mounting hole to connect the shell and the cover plate.

[0014] In one of the embodiments, the first side of the cover plate in the initial assembly is fixedly connected with the shell to form an initial combination, further comprising:

[0015] The initial assembly is placed in a target pose. In the target pose, the cover plate is located downstream of the shell in the direction of gravity.

[0016] In one of the embodiments, the first side of the cover plate in the initial assembly is fixedly connected with the shell to form an initial combination, further comprising:

[0017] The initial assembly is placed in a target pose. In the target pose, the distance between the inner wall of the shell and the outer wall of the display panel is 1mm to 2mm.

[0018] In one of the embodiments, the optical adhesive is a heat-curable optical adhesive. The filling piece is inserted into the first filling port and the second filling port, the optical adhesive is filled into the glue injection space of the combination through the filling piece, and the optical adhesive is cured to form the touch display device by a preset process to cure the optical adhesive.

[0019] The preset process includes a heating process, the heating temperature is 65 degrees Celsius to 75 degrees Celsius, and the heating time is 110 minutes to 130 minutes.

[0020] In one of the embodiments, the shell has at least one first exhaust port, and the bonding layer has at least one second exhaust port. The filling piece is inserted into the first filling port and the second filling port, the optical adhesive is filled into the glue injection space of the combination through the filling piece, and the optical adhesive is cured to form the touch display device, comprising:

[0021] The filling piece is inserted into the first filling port and the second filling port to make the optical adhesive injected into the glue injection space of the combination, and the gas in the glue injection space of the combination is extracted to the outside through the first exhaust port and the second exhaust port to make the optical adhesive filled into the glue injection space of the combination, and the optical adhesive is cured to form the touch display device.

[0022] In one of the embodiments, the bonding layer is arranged on the cover plate or the display panel, comprising:

[0023] A plurality of limiting parts are arranged on the first side of the cover plate in the circumferential direction of the cover plate. All the limiting parts surround to define a limiting area.

[0024] The display panel is placed in the limiting area; the spacing between the outer wall of the display panel and the limiting part is 0.2mm to 0.4mm;

[0025] A bonding layer is arranged between the outer wall of the display panel and the limiting part.

[0026] In one of the embodiments, the cover plate is a curved cover plate.

[0027] According to another aspect of the present application, the embodiments of the present application provide a touch display device, which is made by the manufacturing method of the touch display device.

[0028] In the process of fixing and connecting the shell and the cover plate, various forms of stress may be generated due to assembly precision and other factors. In the present application, the fixing and connecting of the shell and the cover plate is performed before the bonding layer is cured, i.e. when the bonding layer is still in a wet state. In this state, the bonding layer can be regarded as a buffer layer, and the bonding layer can absorb the various forms of stress by deformation, thereby reducing the risk of stress damage to the display panel, optimizing the display effect of the touch display device, and further improving the production yield of the touch display device. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The flow chart of an embodiment of the manufacturing method of the touch display device provided by the present application.

[0030] Figure 2 The perspective structural schematic diagram of the touch display device provided by some embodiments of the present application.

[0031] Figure 3 The structure schematic diagram of the cover plate and the display panel in the touch display device in Figure 1 The perspective structural schematic diagram of the shell in

[0032] Figure 4 The structure schematic diagram of the cover plate and the display panel in the touch display device in Figure 1 The perspective structural schematic diagram of the shell in

[0033] Figure 5 The flow chart of step S401 in some embodiments of the present application.

[0034] Figure 6 The flow chart of step S201 in some embodiments of the present application.

[0035] Figure 7 The flow chart of step S202 in some embodiments of the present application.

[0036] Figure 8 The flow chart of step S203 in some embodiments of the present application.

[0037] Figure 9 A flowchart for step S500a in some embodiments of the present application.

[0038] Figure 10 A flowchart for step S501 in some embodiments of the present application.

[0039] Figure 11 A flowchart for step S2041, step S2042 and step S2043 in some embodiments of the present application.

[0040] Reference signs in the detailed description of the embodiments are as follows:

[0041] 100, touch display device; 110, display panel; 120, cover plate; C1, first side; C2, second side; 130, shell; 140, adhesive layer; K1, first glue filling port; K2, second glue filling port; Z1, first mounting hole; Z2, second mounting hole; Q1, first exhaust port; Q2, second exhaust port; 150, limiting portion. Detailed description of the embodiments

[0042] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship of the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, the terms "first", "second", and the like, if any appear in the description, are used for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0045] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0047] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0048] The present application provides a manufacturing method of a touch display device, which can refer to Figure 1 , Figure 1 The flow chart of an embodiment of the manufacturing method of the touch display device provided by the present application is provided, and the manufacturing method of the touch display device comprises the following steps:

[0049] Step S100, providing a display panel, a cover plate and a housing; the cover plate has a first side and a second side arranged oppositely;

[0050] Step S200: The adhesive layer is placed on the cover plate or the display panel, and the first side of the cover plate is attached to the display panel to form an initial bond; the display panel, the cover plate and the adhesive layer together enclose the injection space;

[0051] Step S300: Fix the first side of the cover plate in the outer shell and the initial bonding body to form an initial assembly; the outer shell and the cover plate together enclose the accommodating cavity, the outer shell has a first glue inlet communicating with the accommodating cavity, the adhesive layer has a second glue inlet communicating with the accommodating cavity and the glue injection space, and the display panel is disposed in the accommodating cavity;

[0052] Step S400: Curing the adhesive layer in the initial assembly to form an assembly;

[0053] Step S500: Insert the potting component into the first potting port and the second potting port, fill the injection space of the assembly with optical adhesive through the potting component, and cure the optical adhesive to form a touch display device.

[0054] In step S100, refer to Figures 2 to 4 , Figure 2 This is a three-dimensional structural diagram of a touch display device 100 provided in some embodiments of this application. Figure 3 for Figure 1 A schematic diagram of the structure of the touch display device 100 when the cover plate 120 and the display panel 110 are installed together. Figure 4 for Figure 1 A three-dimensional structural diagram of the housing 130 is provided, showing a display panel 110, a cover plate 120, and a housing 130; the cover plate 120 has a first side C1 and a second side C2 disposed opposite to each other.

[0055] Specifically, the display panel 110 is a flat panel device for displaying information, capable of receiving and displaying images, text, or other visual information. The display panel 110 includes a liquid crystal display panel, an organic light-emitting diode panel, etc. See also... Figure 1 and Figure 2 The cover plate 120 has a first side C1 and a second side C2 that are disposed opposite to each other. The first side C1 will face the display panel 110, and the second side C2 will serve as the outer surface of the final product. The housing 130 is a component provided for housing and protecting the display panel 110 and other internal components, and the shape and size of the housing 130 determine the appearance profile of the final product.

[0056] In step S200, the adhesive layer 140 is disposed on the cover plate 120 or the display panel 110, and the first side C1 of the cover plate 120 is attached to the display panel 110 to form an initial bond; the display panel 110, the cover plate 120 and the adhesive layer 140 together enclose the glue injection space.

[0057] On the first side C1 of the cover plate 120 or the corresponding surface of the display panel 110, a layer of adhesive layer 140 is coated or laid, and the first side C1 of the cover plate 120 and the corresponding surface of the display panel 110 are aligned and attached together at this time. The adhesive layer is not completely cured and is in a wet state. For reference Figure 2 After the display panel 110 and the cover plate 120 are attached, the cover plate 120, the display panel 110, and the adhesive layer 140 located therebetween collectively form a glue injection space, which is a key area for subsequent filling of optical glue.

[0058] In step S300, for reference Figure 1 The housing 130 and the first side C1 of the cover plate 120 in the initial assembly are fixedly connected to form an initial assembly. The housing 130 and the cover plate 120 collectively define a receiving cavity. The housing 130 has a first glue injection port K1 communicating with the receiving cavity. The adhesive layer 140 has a second glue injection port K2 communicating with the receiving cavity and the glue injection space. The display panel 110 is arranged in the receiving cavity. The housing 130 and the cover plate 120 are fixedly connected when the adhesive layer is not completely cured. The connection mode can be mechanical buckling, screw fixing, pre-coated frame glue bonding, etc. After the housing 130 and the cover plate 120 are fixed, the housing 130 and the cover plate 120 collectively define a receiving cavity. The housing 130 is designed with a first glue injection port K1 directly communicating with the receiving cavity. There is one or more second glue injection ports K2 on the adhesive layer 140 formed in step S200. These second glue injection ports K2 not only communicate with the receiving cavity, but also communicate with the glue injection space defined by the cover plate 120, the display panel 110, and the adhesive layer 140.

[0059] In step S400, the adhesive layer in the initial assembly is cured to form the assembly.

[0060] For reference Figure 2 The adhesive layer 140 in the initial assembly formed in step S300 is cured. After curing, the adhesive layer reaches the designed strength and can firmly combine the cover plate 120 and the display panel 110.

[0061] In step S500, for reference Figures 1 to 3 The glue injection member is inserted into the first glue injection port K1 and the second glue injection port K2. The optical glue is filled into the glue injection space of the assembly through the glue injection member, and the optical glue is cured to form the touch display device 100.

[0062] Specifically, for reference Figure 1 and Figure 2The glue filling member firstly enters the accommodating cavity through the first glue filling port K1, and then the glue filling member enters the accommodating cavity from the second glue filling port K2 so that the optical glue can enter and fill the glue injection space. After the optical glue fills the glue injection space, the optical glue is cured, the glue filling member is removed, and the glue filling port is cleaned. Figure 2 The cylinder at the second glue filling port K2 and the second exhaust port Q2 represents an auxiliary member which is buried in the corner when the cover plate 120 and the display panel 110 are attached, and is taken out after the adhesive layer is cured. The position of the auxiliary member leaves a small hole which can be the second glue filling port K2 or the second exhaust port Q2.

[0063] In some embodiments, the display panel 110 can be made of plastic material and has a transparent area. When the glue filling member fills the optical glue into the glue injection space of the assembly, the operator can observe the glue filling condition through the transparent area. Figures 2 to 4

[0064] In the process of fixedly connecting the housing 130 and the cover plate 120, various forms of stress can be generated due to assembly precision and other factors. In this application, the housing 130 and the cover plate 120 are fixedly connected before the adhesive layer 140 is cured, that is, when the adhesive layer 140 is still in a wet state. In this state, the adhesive layer 140 can be regarded as a buffer layer, and the adhesive layer 140 can absorb the various forms of stress by deformation, thereby reducing the risk of stress damage to the display panel 110, optimizing the display effect of the touch display device 100, and further improving the production yield of the touch display device 100.

[0065] If the adhesive layer is cured first and then the cover plate 120 and the housing 130 are fixedly assembled, since the modulus of elasticity, toughness and other mechanical properties of the cured adhesive layer are fixed, it is difficult for the adhesive layer to buffer and absorb various stresses generated during the installation of the cover plate 120 and the housing 130 by itself deformation as the adhesive layer 140 in a wet state. This results in that the stress cannot be effectively released, the display panel 110 is easily squeezed, the display effect of the touch display device 100 is affected, and the production yield of the touch display device 100 is further reduced.

[0066] In some embodiments, the display panel 110 can be made of plastic material and has a transparent area. When the glue filling member fills the optical glue into the glue injection space of the assembly, the operator can observe the glue filling condition through the transparent area. Figure 5 Figure 5 FIG. 4 is a flowchart of step S401 in some embodiments of the present application. Step S400 includes the following steps:

[0067] In step S401, the initial assembly is placed at a temperature of 20-25 degrees Celsius for 23-25 hours to cure the adhesive layer, and the initial assembly forms the assembly. The material of the adhesive layer is room temperature vulcanized silicone rubber. ​​

[0068] Thus, continuing to refer to Figures 2 to 4 After the fixing and mounting of the shell 130 and the cover plate 120, the curing of the adhesive layer 140 is performed, and the adhesive layer curing time is long, which can absorb part of the stress after the mounting, and the adhesive layer 140 in a wet state during the mounting of the shell 130 and the cover plate 120 can absorb various stresses during the assembly of the shell 130 and the cover plate 120 through the deformation.

[0069] The material of the adhesive layer 140 can be selected as room temperature vulcanized silicone rubber. The room temperature vulcanized silicone rubber glue not only has good adhesive property, but also has the functions of moisture resistance and shock resistance. The room temperature vulcanized silicone rubber can complete vulcanization by contacting the moisture in the air at room temperature, without the need of heating equipment, so as to realize the curing of the adhesive layer.

[0070] It should be noted that in the curing process of the initial assembly, it can be placed at 20 degrees Celsius for 25 hours, or placed at 25 degrees Celsius for 23 hours, or processed at a temperature of 21 degrees Celsius, 23 degrees Celsius or 24 degrees Celsius. The long standing time can also slowly reduce the stress effect of the structure, and the standing time can be selected as 23 hours, 24 hours or 25 hours, which is not limited here.

[0071] In some embodiments, reference can be made to Figure 6 , Figure 6 The flowchart of step S201 in some embodiments of the present application is shown, and step S200 further includes the following steps:

[0072] In step S201, a plurality of first mounting holes are formed in the circumference of the shell, a plurality of second mounting holes are formed in the circumference of the cover plate, and the connecting piece is arranged in the first mounting hole and the second mounting hole to connect the shell and the cover plate.

[0073] In step S201, continuing to refer to Figures 2 to 4 The first mounting hole Z1 and the second mounting hole Z2 are arranged in the two mounting holes after being formed, which provides rigid positioning and further limits the displacement of the cover plate 120, so as to fixedly connect the shell 130 and the cover plate 120.

[0074] Specifically, in the process of punching, the plurality of first mounting holes Z1 formed on the shell 130 are circumferentially aligned with the plurality of second mounting holes Z2 formed on the cover plate 120. The rectangular shell usually has four or more first mounting holes Z1, and the circular shell generally has eight to twelve first mounting holes Z1.

[0075] In some embodiments, reference can be made to Figure 7 , Figure 7 The flowchart of step S202 in some embodiments of the present application is shown, and step S200 further includes the following steps:

[0076] Step S202, placing the initial assembly at the target pose; the initial assembly is at the target pose, and in the direction of gravity, the cover plate is downstream of the housing.

[0077] In step S202, continuing to refer to Figures 2 to 4 The housing 130 is various in shape and generally large, and the cover plate 120 is mostly flat. During the process of mounting the cover plate 120 and the housing 130, the cover plate 120 is placed below, which is more convenient for mounting the cover plate 120 and the housing 130. The cover plate 120 can be placed on a relatively flat ground or table, so that the cover plate 120 is stable, and the cover plate 120 is less likely to shake during the mounting process of the housing 130 and the cover plate 120, which is more convenient for the operator to mount the cover plate 120 and the housing 130.

[0078] In some embodiments, referring to Figure 8 , Figure 8 FIG. 3 is a flowchart of step S203 in some embodiments of the present application. Step S200 further includes the following steps:

[0079] Step S203, placing the initial assembly at the target pose; the initial assembly is at the target pose, and the distance between the inner wall of the housing and the outer wall of the display panel is 1mm to 2mm.

[0080] In step S203, continuing to refer to Figures 2 to 4 The gap between the inner wall of the housing 130 and the outer wall of the display panel 110 is 1mm to 2mm, so that when the housing 130 and the cover plate 120 are fixedly connected, the slight shaking of the display panel 110 is not easy to collide with the housing 130, reducing the risk of damage to the display panel 110, optimizing the display effect of the touch display device 100, and further improving the production yield of the touch display device 100. The gap between the inner wall of the housing 130 and the outer wall of the display panel 110 can be set to 1mm, 1.5mm or 2mm, etc.

[0081] In some embodiments, referring to Figure 9 , Figure 9 FIG. 6 is a flowchart of step S500a in some embodiments of the present application. Step S500a includes the following steps:

[0082] Step S500a, the optical adhesive is a thermally cured optical adhesive; the optical adhesive is filled into the glue injection space of the combination by the glue injection member inserted into the first glue injection port and the second glue injection port, and the optical adhesive is cured to form a touch display device by a preset process;

[0083] The preset process includes a heating treatment process, the heating temperature is 65-75 degrees Celsius, and the heating time is 110-130 minutes.

[0084] In step S500a, continue to refer to Figures 2 to 4 The optical glue is quickly cured by baking the heat-cured optical glue, thereby improving the production efficiency of the touch display device 100. It should be noted that the material of the optical glue includes a silicon-based optical transparent resin. In the heating treatment process, the optical glue can be heated at 65 degrees Celsius for 130 minutes, or heated at 75 degrees Celsius for 110 minutes, or heated at 68 degrees Celsius, 70 degrees Celsius, 73 degrees Celsius or other temperatures. The heating time can also be selected as 115 minutes, 120 minutes or 125 minutes, etc., which is not limited here.

[0085] In some embodiments, refer to Figure 10 , Figure 10 The flowchart of step S501 in some embodiments of the application is shown, and step S500 further includes:

[0086] In step S501, the glue filling member is inserted through the first glue filling port and the second glue filling port to fill the optical glue into the glue filling space of the assembly, and the gas in the glue filling space of the assembly is extracted through the first exhaust port and the second exhaust port to fill the optical glue into the glue filling space of the assembly and cure the optical glue to form the touch display device.

[0087] In step S501, continue to refer to Figures 2 to 4 The gas always flows from the high-pressure area to the low-pressure area. When the gas in the glue filling space is extracted, the gas pressure in the glue filling space decreases to form a negative pressure. Under the negative pressure environment, the optical glue is more easily filled into every corner of the glue filling space under the action of the external atmospheric pressure, improving the uniformity and filling efficiency of the glue filling. Specifically, the second glue filling port K2 and the second exhaust port Q2 can be arranged on opposite sides of the glue filling space. In this way, the optical glue is injected from one side and the gas is extracted from the other side to form a natural flow path, which is conducive to the uniform filling of the optical glue and reduces the retention of the gas in the glue filling space, improving the gas extraction efficiency. And the negative pressure helps to extract the bubbles generated during the glue filling process from the material, reducing the bubbles remaining in the glue filling space and improving the quality of the touch display device 100.

[0088] In some embodiments, refer to Figure 11 , Figure 11 The flowchart of step S2041, step S2042 and step S2043 in some embodiments of the application is shown, and step S200 further includes:

[0089] S2041, a plurality of limiting portions are arranged on the first side of the cover plate along the circumference of the cover plate; all the limiting portions surround to define a limiting area;

[0090] S2042, the display panel is placed in the limiting area; the spacing between the outer wall of the display panel and the limiting portion is 0.2mm to 0.4mm;

[0091] S2043, a bonding layer is arranged between the outer wall of the display panel and the limiting portion.

[0092] In step S2041, continuing to refer to Figures 2 to 4 , the limiting portions 150 are uniformly distributed along the circumference of the cover plate 120, and all the limiting portions 150 can surround to define a limiting area, which can accommodate the display panel 110. During the placement of the display panel 110 and the subsequent operation of arranging the bonding layer 140, the limiting portions 150 physically block the display panel 110 from sliding out of the predetermined position, thereby improving the assembly precision of the cover plate 120 and the housing 130.

[0093] In step S2042, continuing to refer to Figures 2 to 4 , the spacing of 0.2mm to 0.4mm provides the necessary space for arranging the bonding layer 140 in the gap in the next step. The spacing can be selected as 0.2mm, 0.3mm or 0.4mm.

[0094] In step S2043, continuing to refer to Figures 2 to 4 , the bonding layer 140 is filled in the reserved gap, and after curing, the outer edge of the display panel 110 can be bonded to the cover plate 120 and / or the limiting portion 150. The filled bonding layer 140 seals the gap between the outer wall of the display panel 110 and the limiting portion 150, reducing the invasion of pollutants such as dust and water vapor from the edge into the display area between the display panel 110 and the cover plate 120, thereby improving the quality of the touch display device 100.

[0095] In some embodiments, referring to Figures 2 to 4 , the cover plate 120 is a curved cover plate 120. When facing the curved cover plate 120, since the structure of the cover plate 120 is curved and not flat, stress is more likely to occur during the installation of the curved cover plate 120 and the housing 130. The manufacturing method of the touch display device 100 provided in the present application has a significant improvement effect on the touch display device 100 with a curved cover plate 120.

[0096] According to some embodiments of the present application, referring to Figures 2 to 4 , the present application provides a touch display device 100, which is manufactured by the manufacturing method of any one of the touch display devices 100.

[0097] In the technical solution of the embodiments of the present application, continuing to refer to Figures 2 to 4Since the touch display device 100 is manufactured by the manufacturing method of any one of the above touch display devices 100, the touch display device 100 also has the advantages of any one of the above embodiments.

[0098] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as there is no contradiction.

[0099] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A method for manufacturing a touch display device, characterized in that, The application relates to a touch display device and a manufacturing method thereof. The application provides a display panel, a cover plate and a shell; The cover plate has oppositely arranged first and second sides; A bonding layer is arranged on the cover plate or the display panel, the first side of the cover plate is attached to the display panel to form an initial attachment body, the display panel, the cover plate and the bonding layer jointly define a glue injection space; The shell and the first side of the cover plate in the initial attachment body are fixedly connected to form an initial combination body, the shell and the cover plate jointly define a containing cavity, the shell has a first glue injection opening communicating with the containing cavity, the bonding layer has a second glue injection opening communicating with the containing cavity and the glue injection space, and the display panel is arranged in the containing cavity; The bonding layer in the initial combination body is subjected to a curing treatment, so that the initial combination body forms a combination body; A glue injection member is inserted into the first glue injection opening and the second glue injection opening, optical glue is filled into the glue injection space of the combination body through the glue injection member, and the optical glue is cured to form the touch display device.

2. The manufacturing method of the touch display device according to claim 1, wherein, The curing treatment of the bonding layer in the initial combination body to form a combination body comprises: The initial combination body is placed at a temperature of 20-25 DEG C for 23-25 hours to cure the bonding layer, so that the initial combination body forms a combination body; the bonding layer is made of room temperature vulcanized silicone rubber.

3. The manufacturing method of the touch display device according to claim 1, wherein, The fixing connection of the shell and the first side of the cover plate in the initial attachment body to form an initial combination body comprises: A plurality of first mounting holes are formed in the circumferential direction of the shell, a plurality of second mounting holes are correspondingly formed in the circumferential direction of the cover plate, a connecting member is arranged in the first mounting hole and the second mounting hole to connect the shell and the cover plate.

4. The manufacturing method of the touch display device according to claim 1, wherein, The fixing connection of the shell and the first side of the cover plate in the initial attachment body to form an initial combination body further comprises: The initial attachment body is placed in a target pose; the initial attachment body is in the target pose, and the cover plate is located downstream of the shell in the direction of gravity.

5. The manufacturing method of the touch display device according to claim 1, wherein, The fixing connection of the shell and the first side of the cover plate in the initial attachment body to form an initial combination body further comprises: The initial attachment body is placed in a target pose; the initial attachment body is in the target pose, and the distance between the inner wall of the shell and the outer wall of the display panel is 1-2 mm.

6. The manufacturing method of the touch display device according to any one of claims 1 to 5, characterized in that, The optical glue is heat-cured optical glue; in the process of inserting the glue injection member into the first glue injection opening and the second glue injection opening, filling the optical glue into the glue injection space of the combination body through the glue injection member, and curing the optical glue to form the touch display device, the optical glue is cured by a preset process; The preset process comprises a heating treatment process, the heating temperature is 65-75 DEG C, and the heating time is 110-130 minutes.

7. The manufacturing method of the touch display device according to any one of claims 1 to 5, characterized in that, The housing has at least one first exhaust port, and the adhesive layer has at least one second exhaust port; the glue-filling member is inserted into the first glue-filling port and the second glue-filling port, the optical glue is filled into the glue-filling space of the combination through the glue-filling member, and the optical glue is solidified to form a touch display device, comprising: The glue-filling member is inserted into the first glue-filling port and the second glue-filling port, the optical glue is filled into the glue-filling space of the combination, and the gas in the glue-filling space of the combination is extracted to the outside through the first exhaust port and the second exhaust port, so that the optical glue fills the glue-filling space of the combination and is solidified to form a touch display device.

8. The manufacturing method of the touch display device according to any one of claims 1 to 5, characterized in that, The adhesive layer is arranged on the cover plate or the display panel, comprising: A plurality of limiting portions are arranged on the first side of the cover plate along the circumference of the cover plate; all the limiting portions surround to define a limiting area; The display panel is placed in the limiting area; the spacing between the outer wall of the display panel and the limiting portion is 0.2mm to 0.4mm; The adhesive layer is arranged between the outer wall of the display panel and the limiting portion.

9. The manufacturing method of the touch display device according to any one of claims 1 to 5, characterized in that, The cover plate is a curved cover plate.

10. A touch display device, comprising: The touch display device is manufactured by the manufacturing method of any one of claims 1 to 9. The touch display device is manufactured by the manufacturing method of any one of claims 1 to 9.

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