Display device and preparation method thereof

Abstract

The invention relates to the technical field of display, and discloses a display device and a preparation method thereof. The display device includes: a display panel; the cover plate is arranged on the light emitting side of the display panel; the middle frame is provided with a bearing part and is used for bearing the display panel; the bearing part has a side part and a bottom; the display panel is located on the side, facing the cover plate, of the bottom. The printing component is arranged in the peripheral area of the cover plate and fills and covers the side face, facing the side portion and the bottom of the bearing portion, of the display panel. According to the scheme, the distance between the display area and the middle frame is reduced, and the display device with the narrow frame is achieved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display device and a manufacturing method thereof. Background Art

[0002] With the development of communication technology, more and more frequency bands are used in communication technology. In order to meet the needs of each frequency band at the same time, the number of antennas in smart terminals has also increased. For this reason, frequency-reconfigurable antennas have attracted attention. Based on micromechanical RF switches, frequency-reconfigurable antennas can be constructed. When no voltage is applied, the cantilever beam of the micromechanical RF switch is in a suspended state. When voltage is applied, the cantilever beam collapses to connect the separated metal sheets of the micromechanical RF switch. However, during operation, the micromechanical RF switch has problems such as high driving voltage, easy collapse of the cantilever beam, or failure of the micromechanical switch due to local abnormal contact. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a display device and a method for manufacturing the same.

[0004] An aspect of an embodiment of the present invention provides a display device, specifically comprising:

[0005] Display panel;

[0006] A cover plate, arranged on the light-emitting side of the display panel;

[0007] A middle frame, having a bearing portion for bearing the display panel; the bearing portion has a side portion and a bottom portion; the display panel is located on a side of the bottom portion facing the cover plate;

[0008] The printing component is arranged in the peripheral area of ​​the cover plate and fills and covers the side surfaces of the display panel facing the side and bottom of the bearing portion.

[0009] In some embodiments, the printing component has a first surface disposed opposite to the side portion; the orthographic projection of a point on the first surface that is farther from the cover plate has a greater distance from an edge of the cover plate.

[0010] In some embodiments, a distance ratio between a point on the first surface farthest from the cover plate and a point on the first surface closest to the cover plate is in a range of 1-2.

[0011] In some embodiments, the printing component includes a first printing component and a second printing component arranged opposite to each other along a first direction, and a third printing component and a fourth printing component arranged opposite to each other along a second direction, and the first printing component, the second printing component, the third printing component, and the fourth printing component all include a first packaging component and a second packaging component connected as one body; the first packaging component is arranged on a side of the display panel away from the cover plate; the second direction is an extension direction of the cover plate;

[0012] The first packaging component includes a first sub-surface arranged opposite to the side portion, and a second sub-surface arranged opposite to the first sub-surface; the further away a point on the second sub-surface is from the cover plate, the farther its orthographic projection on the cover plate is from the edge of the cover plate.

[0013] In some embodiments, the printing component includes a first sub-printing component and a second sub-printing component; the first sub-printing component surrounds the second sub-printing component, and the second sub-printing component fills and covers the side of the display panel facing the side and bottom of the carrier.

[0014] In some embodiments, the material viscosity of the first sub-printing component is greater than or equal to the material viscosity of the second sub-printing component.

[0015] In some embodiments, the printing component includes a third sub-printing component, a fourth sub-printing component and a fifth sub-printing component; the third sub-printing component surrounds the fifth sub-printing component, the fifth sub-printing component surrounds the fourth sub-printing component, and the fourth sub-printing component fills and covers the sides of the display panel facing the sides and bottom of the supporting part.

[0016] In some embodiments, the material viscosity of the third sub-printing component is greater than or equal to the material viscosity of the fourth sub-printing component, and the material viscosity of the fourth sub-printing component is greater than the material viscosity of the fifth sub-printing component.

[0017] In some embodiments, the printed component is connected to a surface of the bottom facing the cover plate by glue.

[0018] In some embodiments, the display device further includes: a filling structure;

[0019] The display panel includes: a display module, a flexible circuit board and a driving circuit board connected in sequence, the display module is connected to the cover plate at the light-emitting side, the flexible circuit board is bent from the light-emitting side of the display module to the backlight side of the display module, and the filling structure is arranged on the side of the driving circuit board facing the display module; the printing component fills and covers the flexible circuit board; the printing component fills and covers the side of the display module facing the side and bottom of the bearing portion; the printing component fills and covers the side of the driving circuit board facing the side and bottom of the bearing portion.

[0020] In some embodiments, the display device further includes: a back film, the back film is arranged on a side of the display module away from the cover plate, and the filling structure is arranged on a side of the back film away from the cover plate.

[0021] Another aspect of the embodiments of the present invention further provides a method for manufacturing a display device, comprising:

[0022] A display panel, a cover plate and a middle frame are provided, wherein the middle frame has a bearing portion, and the bearing portion has a side portion and a bottom portion;

[0023] The cover plate is arranged on the light emitting side of the display panel;

[0024] Printing a printed component in a peripheral area of ​​the cover plate;

[0025] Arrange the display panel on a side of the bottom facing the cover plate;

[0026] The printed component fills and covers the side surfaces of the display panel facing the side and bottom of the carrying portion.

[0027] In some embodiments, the step of printing a printed component in the peripheral area of ​​the cover plate includes:

[0028] Printing a first sub-printing component and a second sub-printing component in sequence in the peripheral area of ​​the cover plate;

[0029] The first sub-printing component surrounds the second sub-printing component, and the second sub-printing component fills and covers the side surface of the display panel facing the side and bottom of the bearing portion.

[0030] In some embodiments, the step of printing a printed component in the peripheral area of ​​the cover plate includes:

[0031] Printing a third sub-printing component, a fourth sub-printing component and a fifth sub-printing component in sequence in the peripheral area of ​​the cover plate;

[0032] The third sub-printing component surrounds the fifth sub-printing component, the fifth sub-printing component surrounds the fourth sub-printing component, and the fourth sub-printing component fills and covers the side of the display panel facing the side and bottom of the bearing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a display device provided by the present invention;

[0035] Figure 2 A schematic diagram of the structure of a display device provided by the present invention, in which the middle frame is not shown;

[0036] Figure 3 for Figure 2 A bottom view of a display device;

[0037] Figure 4 A schematic diagram of the structure of a printing component provided by the present invention;

[0038] Figure 5 A schematic diagram of the structure of a printing component provided by the present invention;

[0039] Figure 6 A schematic diagram of the structure of a printing component provided by the present invention;

[0040] Figure 7 A schematic diagram of the structure of a printing component provided by the present invention;

[0041] Figure 8 A schematic diagram of the structure of a display device provided by the present invention, in which the middle frame is not shown;

[0042] Fig. 9 for Figure 8 A bottom view of a display device;

[0043] Fig.10 A schematic diagram of the structure of a display device provided by the present invention, in which the middle frame is not shown;

[0044] Fig.11 for Fig.10 A bottom view of a display device;

[0045] Figures 12A to 12B A schematic diagram of a printing component provided by the present invention being printed twice;

[0046] Figures 13A to 13C A schematic diagram of a printing component provided by the present invention being printed three times. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0048] Embodiments of the present disclosure are described below. However, it should be understood that the disclosed embodiments are merely examples, and other embodiments may take various alternative forms. The drawings are not necessarily drawn to scale; certain features may be exaggerated or minimized to show the details of specific components. Therefore, the specific structural and functional details disclosed herein should not be interpreted as limiting, but merely as a representative basis for teaching those skilled in the art to use the present application in various ways. As will be understood by those of ordinary skill in the art, the various features shown and described with reference to any one of the figures may be combined with the features shown in one or more other figures to produce embodiments that are not explicitly shown or described. The combination of features shown provides representative embodiments for typical applications. However, various combinations and modifications of features consistent with the teachings of the present disclosure may be desirable for certain specific applications or embodiments.

[0049] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. "Including" or "including" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The term "and / or" when used to list two or more items means that any one of the listed items can be adopted by itself, or any combination of two or more of the listed items can be adopted.

[0050] According to a first aspect of an embodiment of the present invention, a display device is provided.

[0051] Figure 1 The present invention is a structural schematic diagram of a display device. Figure 2 It is a schematic diagram of the structure of a display device whose middle frame is not shown. Figure 3 for Figure 2 A bottom view of a display device.

[0052] Reference Figure 1 , Figure 2 and Figure 3 The display device includes: a display panel 10, a cover plate 20, a middle frame 30 and a printing component 40, the middle frame 30 has a bearing portion 31, the bearing portion 31 of the middle frame 30 has a side portion 311 and a bottom portion 312, the display panel 10 is located on the side of the bottom 312 of the middle frame 30 facing the cover plate 20; the cover plate 20 is arranged on the light emitting side of the display panel 10; the printing component 40 is arranged in the peripheral area of ​​the cover plate 20, and fills and covers the side of the display panel 10 facing the side portion 311 and the bottom 312 of the bearing portion 31 of the middle frame 30.

[0053] In a display device, the printed component can be used to encapsulate the peripheral area of ​​the display panel and the cover plate to prevent oxygen and water from entering the interior of the display device, thereby affecting the performance of the display panel.

[0054] The printed component is printed by a 3D printing device, and the 3D printing device can be a droplet jet 3D printing device or a light-curing printer, etc., but is not limited thereto.

[0055] The material of the printing component can be selected from high-viscosity fluid materials or colloid materials, for example, light-cured prepolymers or heat-cured prepolymers. The light-cured prepolymers can be epoxy acrylates, polyurethane acrylates, polyether acrylates, polyester acrylates, acrylic resins, etc., but are not limited thereto. The heat-cured prepolymers can be epoxy resins, polyurethanes, etc., but are not limited thereto.

[0056] When the printed component is printed by a 3D printing device, the selected material can be printed layer by layer along the height direction Z of the printed component until a complete printed component is printed.

[0057] During the printing process of the printed component, the printed part can be cured while printing. The printed part of the printed component can also be pre-cured first, and then cured by light and heat. It is also possible to wait until all the printed components are printed before curing the entire part.

[0058] The printing process can improve the accuracy of the printed components, reduce the distance between the display area of ​​the display panel and the middle frame, and thus reduce the frame of the display device.

[0059] In the disclosed embodiment, a printed component is provided in the peripheral area of ​​the cover plate, and the printed component fills and covers the sides of the display panel facing the side and bottom of the middle frame bearing part, thereby reducing the frame of the display device and realizing a display device with a narrow frame.

[0060] In the embodiment of the present disclosure, the frame of the display device refers to the space defined by the periphery of the display area 100 farthest from the center of the display area and the periphery of the middle frame farthest from the center of the display area.

[0061] In some embodiments, Figure 2 As shown, the printing component 40 has a first surface 41 arranged opposite to the side of the bearing portion of the middle frame; the more distant a point on the first surface 41 is from the cover plate 20, the farther its orthographic projection on the cover plate 20 is from the edge of the cover plate.

[0062] In some examples, such as Figure 2 As shown, the distance from the point on the first surface 41 closest to the cover plate to the edge of the cover plate is a, and the distance from the point on the first surface 41 farthest from the cover plate to the point on the first surface 41 closest to the cover plate is b, then the distance from the point on the first surface 41 farthest from the cover plate to the edge of the cover plate is a+b, and the ratio of the distance from the point on the first surface 41 farthest from the cover plate to the point on the first surface 41 closest to the cover plate to the edge of the cover plate is in the range of 1 to 2. Furthermore, the ratio of the distance from the point on the first surface 41 farthest from the cover plate to the point on the first surface 41 closest to the cover plate to the edge of the cover plate is in the range of 1.2 to 1.5 or 1.6 to 1.8, specifically 1.3, 1.4 or 1.7, but not limited thereto. In the product design process, the specific value of the range of the distance ratio from the point on the first surface farthest from the cover plate to the point on the first surface closest to the cover plate to the edge of the cover plate is specifically designed according to the specific product.

[0063] In the actual production process of the display device, it is theoretically hoped that the distance between the orthographic projection of each point on the first surface on the cover plate and the edge of the cover plate is equal, and the closer to the edge of the cover plate, the better, thereby further reducing the border of the display device; and reducing the difficulty of processing the middle frame, reducing the gap between the side of the middle frame bearing portion and the printed component, preventing foreign matter from entering the interior of the display device, thereby affecting the performance of the display device, and increasing the reliability of the display device.

[0064] Figure 4 FIG. 1 is a schematic diagram of the structure of a printing component. Figure 4 In the example shown, the first surface 41 of the printing component 40 is perpendicular to the surface of the cover plate 20 that carries the printing component 40 , further reducing the frame of the display device.

[0065] In some examples, in order to facilitate the clamping of the printed component and the bearing portion of the middle frame and make the assembly of the printed component and the middle frame more secure, the first surface 41 of the printed component 40 can be set to different shapes. Figure 5 , Figure 6 , Figure 7The shape shown is used as an example to explain the shape of the first surface of the printed component.

[0066] Figure 5 The figure is a schematic diagram of the structure of a printing component. Figure 6 The figure is a schematic diagram of the structure of a printing component. Figure 7 The figure is a schematic diagram of the structure of a printing component.

[0067] In such Figure 5 In the example shown, the first surface 41 of the printing component may be in an arc shape, with the arc opening facing the side of the middle frame bearing portion, thereby facilitating the clamping of the middle frame bearing portion and making the assembly of the printing component and the middle frame more secure.

[0068] In such Figure 6 In the example shown, the shape of the first surface 41 of the printed component may include a first sub-surface 411 and a second sub-surface 412 that are relatively connected, the first sub-surface 411 and the second sub-surface 412 are at a certain angle, and the opening formed by the connection of the first sub-surface 411 and the second sub-surface 412 faces the side of the middle frame bearing part, thereby facilitating the clamping of the bearing part of the middle frame, making the assembly of the printed component and the middle frame more secure.

[0069] In such Figure 7 In the example shown, the shape of the first surface 41 of the printing component may include a third sub-surface 413, a fourth sub-surface 414 and a fifth sub-surface 415 which are relatively connected, the third sub-surface 413 is perpendicular to the fourth sub-surface 414, the fourth sub-surface 414 is perpendicular to the fifth sub-surface 415, and the orthographic projection of the third sub-surface 413 on the cover plate 20 is within the range of the orthographic projection of the fifth sub-surface 415 on the cover plate 20, thereby facilitating the carding of the bearing portion of the middle frame, making the assembly of the printing component and the middle frame more secure.

[0070] In some examples, a is in the range of 0 to 100 μm, and b is in the range of 0 to 100 μm. Furthermore, a is in the range of 10 to 50 μm or 60 to 90 μm, and b is in the range of 10 to 50 μm or 60 to 90 μm.

[0071] During the product design process, the specific values ​​of a and b are designed according to the specific product. For example, a can be 10μm, 20μm, 30μm, 40μm, 50μm, 60μm or 80μm, etc.; b can be 5μm, 15μm, 25μm, 35μm, 45μm, 55μm, 65μm or 85μm, etc.

[0072] In some examples, such as Figure 2As shown, the distance from the point on the first surface 41 farthest from the cover plate to the cover plate is h1. The specific value of h1 is designed according to the specific product and is related to the distance between the cover plate and the bottom of the bearing portion of the middle frame in the specific product.

[0073] In some embodiments, reference Figure 2 and Figure 3 The printing component 40 includes a first printing component 42 and a second printing component 43 arranged opposite to each other along a first direction X, and a third printing component 44 and a fourth printing component 45 arranged opposite to each other along a second direction Y. The first printing component 42, the second printing component 43, the third printing component 44, and the fourth printing component 45 all include a first packaging component 46 and a second packaging component 47 connected as one body; the first packaging component 46 is arranged on a side of the display panel 10 away from the cover plate 20; the second direction Y is the extension direction of the cover plate 20; the first packaging component 46 includes a first sub-surface 461 arranged opposite to the side, and a second sub-surface 462 arranged opposite to the first sub-surface 461; the orthographic projection of a point on the second sub-surface 462 that is farther from the cover plate 20 on the cover plate 20 is farther from the edge of the cover plate.

[0074] In the actual production process of the display device, it is theoretically hoped that the distances from the orthographic projections of various points on the second sub-surface on the cover plate to the edge of the cover plate are equal. However, in the actual production process, since the material of the printing component is flowable, it is difficult to make the distances from the orthographic projections of various points on the second sub-surface on the cover plate to the edge of the cover plate equal. However, when printing the printing component, by controlling the outflow of printing material of the printing device, the orthographic projections of points on the second sub-surface that are farther away from the cover plate are farther away from the edge of the cover plate, and the orthographic projections of the points on the second sub-surface that are farthest from the cover plate are made as close as possible to the orthographic projections of the points on the second sub-surface that are farthest from the cover plate, thereby increasing the available space of the display device.

[0075] In some examples, reference Figure 3 The value range of the distance between the point on the second sub-surface 462 farthest from the cover plate and the point on the second character surface 462 closest to the cover plate is 0 to 100 μm.

[0076] In the actual production process of the display device, it is theoretically hoped that the distances from the orthographic projections of various points on the second sub-surface on the cover plate to the edge of the cover plate are equal, thereby maximizing the increase in the available space of the display device.

[0077] In some embodiments, Figure 1 As shown, the printed component 40 is connected to the bottom of the bearing portion 21 of the middle frame 30 facing the cover plate 20 through the adhesive layer 50. Specifically, the material of the adhesive layer 50 can be a material with good adhesion, such as a textured glue.

[0078] Figure 8 It is a schematic diagram of the structure of a display device whose middle frame is not shown. Fig. 9 for Figure 8 A bottom view of a display device.

[0079] In some embodiments, Figure 8 , Fig. 9 As shown, the printing component 40 includes a first sub-printing component 410 and a second sub-printing component 420; the first sub-printing component 410 surrounds the second sub-printing component 420, and the second sub-printing component 420 fills and covers the side and bottom sides of the bearing part of the display panel 10 facing the middle frame.

[0080] In the disclosed embodiment, a first sub-print component and a second sub-print component are arranged in the peripheral area of ​​the cover plate, and the first sub-print component surrounds the second sub-print component, and the second sub-print component fills and covers the side of the display panel facing the side and bottom of the middle frame bearing part, thereby making the orthographic projection of each point on the side of the first sub-print component facing the middle frame bearing part on the cover plate closer to the edge of the cover plate, further reducing the border of the display device.

[0081] In some examples, the material viscosity of the first sub-printing member is greater than or equal to the material viscosity of the second sub-printing member.

[0082] Specifically, the first sub-print component adopts a fluid material or a colloidal material with a higher viscosity, so that the contour of the side of the first sub-print component facing the middle frame bearing portion can be closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the first sub-print component facing the middle frame bearing portion can be closer.

[0083] The second sub-printing component uses a fluid material or a colloid material with a higher viscosity, so that the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the second sub-printing component away from the middle frame bearing portion is closer. The second sub-printing component uses a fluid material or a colloid material with a lower viscosity, which can speed up the molding speed of the second sub-printing component.

[0084] Fig.10 It is a schematic diagram of the structure of a display device whose middle frame is not shown. Fig.11 for Fig.10 A bottom view of a display device.

[0085] In some embodiments, Fig.10 , Fig.11As shown, the printing component 40 includes a third sub-printing component 430, a fourth sub-printing component 440 and a fifth sub-printing component 450; the third sub-printing component 430 surrounds the fifth sub-printing component 450, the fifth sub-printing component 450 surrounds the fourth sub-printing component 440, and the fourth sub-printing component 440 fills and covers the side and bottom sides of the bearing part of the display panel 10 facing the middle frame.

[0086] In the embodiment of the present disclosure, a third sub-print component, a fourth sub-print component and a fifth sub-print component are arranged in the peripheral area of ​​the cover plate, and the third sub-print component surrounds the fifth sub-print component, the fifth sub-print component surrounds the fourth sub-print component, and the fourth sub-print component fills and covers the side surfaces of the display panel facing the side and bottom of the middle frame bearing portion, so that the orthographic projection of each point on a side of the third sub-print component facing the middle frame bearing portion on the cover plate is closer to the edge of the cover plate, further reducing the frame of the display device; and the orthographic projection of each point on a side of the fourth sub-print component away from the middle frame bearing portion on the cover plate is closer to the edge of the cover plate, further increasing the available space of the display device.

[0087] In some embodiments, the material viscosity of the third sub-printing component is greater than or equal to the material viscosity of the fourth sub-printing component, and the material viscosity of the fourth sub-printing component is greater than the material viscosity of the fifth sub-printing component.

[0088] The third sub-print component and the fourth sub-print component adopt a fluid material or a colloid material with a relatively high viscosity, so that the contour of the side of the third sub-print component facing the side of the middle frame bearing portion can be closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the third sub-print component facing the side of the middle frame bearing portion can be closer, and the contour of the side of the fourth sub-print component away from the side of the middle frame bearing portion can be closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the third sub-print component away from the side of the middle frame bearing portion can be closer.

[0089] The fifth sub-printing component uses a fluid material or a colloid material with a relatively low viscosity, which can speed up the molding speed of the fifth sub-printing component.

[0090] In some embodiments, Figure 1As shown, the display device also includes: a filling structure 60, the display panel 10 includes a display module 11, a flexible circuit board 12 and a driving circuit board 13 connected in sequence, the display module 11 is connected to the cover plate 20 on the light-emitting side, the flexible circuit board 12 is bent from the light-emitting side of the display module 11 to the backlight side of the display module 11, and the filling structure 60 is arranged on the side of the driving circuit board 13 facing the display module 11; the printing component 40 fills and covers the flexible circuit board 12; the printing component 40 fills and covers the side of the display module 11 facing the side 311 of the bearing portion 31, and at least covers part of the side of the display module 11 facing the bottom 312 of the bearing portion 31; the printing component fills and covers the side of the driving circuit board 13 facing the side 311 of the bearing portion 31, and at least covers part of the side of the driving circuit board 13 facing the bottom 312 of the bearing portion 31.

[0091] The filling structure of the embodiment of the present disclosure is used to fill the gap between the display module and the driving circuit board to keep the flexible circuit board in a stable bending state. The material of the filling structure can be polyethylene terephthalate or curing glue, etc., but is not limited thereto.

[0092] In the disclosed embodiment, the backlight side refers to the side of the display module that is away from the light emitting direction thereof. In other words, during the use of the display module, the non-display side is the side of the display module that is away from the viewer.

[0093] In some examples, a driving chip is provided on the driving circuit board 13 for transmitting a driving signal to the flexible circuit board 12; after receiving the driving signal, the flexible circuit board 12 transmits the driving signal to the display module 11, thereby controlling the display module 11 to display an image.

[0094] In some examples, the display module 11 may include: a driving circuit layer and a light-emitting device layer. The driving circuit layer may include a plurality of transistors, and the light-emitting device layer may include a plurality of OLED (Organic Light-Emitting Diode) devices, wherein each OLED device includes a cathode, an anode, an organic light-emitting material layer and other structures, wherein the anode is located on a side close to the driving layer, the cathode is located on a side away from the driving layer, and the organic light-emitting material layer is located between the anode and the cathode. The anode of each OLED device can be connected to a corresponding transistor, so that each OLED device can be independently and continuously controlled under the drive of the transistor, thereby realizing image display.

[0095] In some examples, a COP display panel (Chip On Panel, chip bonded to the display surface) is used, which includes: a display area, a bending area and a bonding area connected in sequence, the display area is connected to the cover plate, and in the light-emitting side direction away from the display area, the display area is connected to the bonding area through the bending area, the bonding area has a pad, and the bonding area is connected to a driving circuit board, such as an FPC (Flexible Printed Circuit) through the pad.

[0096] In some examples, an optical adhesive 80 is further disposed between the display device cover plate 20 and the display module 11, and the display module 11 is connected to the cover plate 20 on the light emitting side through the optical adhesive 80. The optical adhesive reduces the light loss on the light emitting side of the display module.

[0097] In some embodiments, Figure 1 As shown, the display device not only includes the above structure, but also includes: a back film 70 , which is arranged on the side of the display module 11 away from the cover plate 20 , and a filling structure 60 is arranged on the side of the back film 70 away from the cover plate 20 .

[0098] In some examples, the back film can be a heat dissipation back film, which provides support for the display module and dissipates heat from the display module. Based on the same inventive concept, a second aspect of an embodiment of the present invention provides a method for preparing a display device, which specifically includes:

[0099] S10. Provide a display panel, a cover plate and a middle frame, wherein the middle frame has a bearing portion, and the bearing portion has a side portion and a bottom portion.

[0100] S20, disposing a cover plate on the light emitting side of the display panel.

[0101] S30, printing a printed component in the peripheral area of ​​the cover plate.

[0102] S40, disposing the display panel on the side of the bottom facing the cover plate, wherein the printing component fills and covers the side of the display panel facing the side of the bearing portion and the bottom.

[0103] In the disclosed embodiment, a printed component is printed in the peripheral area of ​​the cover plate, and the printed component fills and covers the sides of the display panel facing the side and bottom of the middle frame bearing portion, thereby reducing the distance between the display area and the middle frame, thereby realizing a display device with a narrow frame.

[0104] In some examples, for step S30, the printed component can be printed by a common printing or 3D printing process. Specifically, a high-viscosity fluid material or a colloid adhesive is printed on the peripheral area of ​​the cover plate and the display panel through a printer nozzle to form a pre-shaped printed component, and then the pre-shaped printed component is cured by heat or light to form a final-shaped printed component, and the final-shaped printed component fills and covers the side of the display panel facing the side and bottom of the bearing portion.

[0105] In traditional solutions, when packaging display panels, colloid materials with low viscosity are usually used for packaging. In order to prevent the packaging structure from overflowing during the packaging process, a mold is usually used to form a barrier to the packaging structure to prevent the packaging structure from overflowing. However, after the packaging is completed, the mold needs to be demolded. If the mold slope is not enough during demolding, it will make the mold difficult to eject. If it is ejected forcibly, the packaging structure will be deformed. In addition, the use of a mold will also cause the precision angle of the external contour of the packaging structure to be affected.

[0106] Compared with the process of using molds for packaging in traditional solutions, the embodiments of the present disclosure avoid the problems of difficult demoulding and low processing accuracy of the packaging structure through the printing process, and have a fast printing speed and improved processing accuracy of the printed components.

[0107] Figures 12A to 12B Schematic diagram of printing a component in two steps.

[0108] In some embodiments, reference Fig. 12A and Fig. 12B , the printed component can be printed in two steps. The specific printing process of the printed component is as follows:

[0109] The first sub-print component 410 and the second sub-print component 420 are printed in sequence in the peripheral area of ​​the cover plate, and the first sub-print component 410 surrounds the second sub-print component 420, and the second sub-print component 420 fills and covers the sides of the display panel facing the side and bottom of the middle frame bearing part, thereby reducing the distance between the display area and the middle frame, and realizing a display device with a narrow frame.

[0110] In some examples, the viscosity of the material of the first sub-printing component selected when printing the printing component is greater than or equal to the viscosity of the material of the second sub-printing component.

[0111] In the disclosed embodiment, by using a fluid material or colloid material with a higher viscosity for the first sub-print component, the contour of the side of the first sub-print component facing the side of the middle frame bearing part can be made closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the first sub-print component facing the middle frame bearing part can be made closer. The second sub-print component uses a fluid material or colloid material with a higher viscosity, so that the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the second sub-print component away from the middle frame bearing part can be made closer. The second sub-print component uses a fluid material or colloid material with a lower viscosity, which can speed up the molding speed of the second sub-print component.

[0112] Figures 13A to 13C This is a schematic diagram of printing a component in three steps.

[0113] In some embodiments, reference Fig.13A , Fig. 13B and Fig. 13C , the printed component can be printed in three times, and the specific printing process of the printed component is as follows:

[0114] The third sub-print component 430, the fourth sub-print component 440 and the fifth sub-print component 450 are sequentially printed in the peripheral area of ​​the cover plate, and the third sub-print component 430 surrounds the fifth sub-print component 450, the fifth sub-print component 450 surrounds the fourth sub-print component 440, and the fourth sub-print component 440 fills and covers the sides of the display panel facing the side and bottom of the middle frame bearing part, thereby reducing the distance between the display area and the middle frame, and realizing a display device with a narrow frame.

[0115] In some examples, the material viscosity of the third sub-printing component selected when printing the printing component is greater than or equal to the material viscosity of the fourth sub-printing component, and greater than the material viscosity of the fifth sub-printing component.

[0116] In the disclosed embodiment, by using a fluid material or colloid material with a higher viscosity for the third sub-printing component and the fourth sub-printing component, the contour of the side of the third sub-printing component facing the side of the middle frame bearing part can be made closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the third sub-printing component facing the side of the middle frame bearing part can be made closer, the contour of the side of the fourth sub-printing component away from the side of the middle frame bearing part can be made closer to the edge of the cover plate, and the distance between the point farthest from the cover plate and the point closest to the cover plate on the side of the third sub-printing component away from the side of the middle frame bearing part can be made closer. The fifth sub-printing component uses a fluid material or colloid material with a lower viscosity, which can speed up the molding speed of the fifth sub-printing component.

[0117] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A display device, comprising: Display panel; A cover plate, arranged on the light-emitting side of the display panel; A middle frame, having a bearing portion, for bearing the display panel; The bearing portion has a side portion and a bottom portion; the display panel is located on a side of the bottom portion facing the cover plate; The printing component is arranged in the peripheral area of ​​the cover plate and fills and covers the side surfaces of the display panel facing the side and bottom of the bearing portion.

2. The display device according to claim 1, wherein: The printing component has a first surface arranged opposite to the side portion; the orthographic projection of a point on the first surface that is farther from the cover plate has a greater distance from the edge of the cover plate.

3. The display device according to claim 2, wherein: The distance ratio between the point on the first surface farthest from the cover plate and the point on the first surface closest to the cover plate is in the range of 1-2.

4. The display device according to claim 1, wherein: The printing component comprises a first printing component and a second printing component arranged opposite to each other along a first direction, and a third printing component and a fourth printing component arranged opposite to each other along a second direction, wherein the first printing component, the second printing component, the third printing component and the fourth printing component all comprise a first packaging component and a second packaging component connected as one body; the first packaging component is arranged on a side of the display panel away from the cover plate; the second direction is an extension direction of the cover plate; The first packaging component includes a first sub-surface arranged opposite to the side portion, and a second sub-surface arranged opposite to the first sub-surface; the further away a point on the second sub-surface is from the cover plate, the farther its orthographic projection on the cover plate is from the edge of the cover plate.

5. The display device according to claim 1, wherein: The printing component includes a first sub-printing component and a second sub-printing component; the first sub-printing component surrounds the second sub-printing component, and the second sub-printing component fills and covers the side of the display panel facing the side and bottom of the bearing portion.

6. The display device according to claim 5, wherein: The material viscosity of the first sub-printing component is greater than or equal to the material viscosity of the second sub-printing component.

7. The display device according to claim 1, wherein: The printing component includes a third sub-printing component, a fourth sub-printing component and a fifth sub-printing component; the third sub-printing component surrounds the fifth sub-printing component, the fifth sub-printing component surrounds the fourth sub-printing component, and the fourth sub-printing component fills and covers the side of the display panel facing the side and bottom of the bearing portion.

8. The display device according to claim 7, wherein: The material viscosity of the third sub-printing component is greater than or equal to the material viscosity of the fourth sub-printing component, and the material viscosity of the fourth sub-printing component is greater than the material viscosity of the fifth sub-printing component.

9. The display device according to claim 1, wherein: The printing component is connected to a side of the bottom facing the cover plate by glue.

10. The display device according to claim 1, wherein: Also included: a filling structure; The display panel includes: a display module, a flexible circuit board and a driving circuit board connected in sequence, the display module is connected to the cover plate at the light-emitting side, the flexible circuit board is bent from the light-emitting side of the display module to the backlight side of the display module, and the filling structure is arranged on the side of the driving circuit board facing the display module; the printing component fills and covers the flexible circuit board; the printing component fills and covers the side of the display module facing the side and bottom of the bearing portion; the printing component fills and covers the side of the driving circuit board facing the side and bottom of the bearing portion.

11. The display device according to claim 10, wherein: Also includes: A back film is arranged on a side of the display module away from the cover plate, and the filling structure is arranged on a side of the back film away from the cover plate.

12. A method for preparing a display device, comprising: A display panel, a cover plate and a middle frame are provided, wherein the middle frame has a bearing portion, and the bearing portion has a side portion and a bottom portion; The cover plate is arranged on the light emitting side of the display panel; Printing a printed component in a peripheral area of ​​the cover plate; Arrange the display panel on a side of the bottom facing the cover plate; The printed component fills and covers the side surfaces of the display panel facing the side and bottom of the carrying portion.

13. The method according to claim 12, wherein: The step of printing a printed component in the peripheral area of ​​the cover plate comprises: Printing a first sub-printing component and a second sub-printing component in sequence in the peripheral area of ​​the cover plate; The first sub-printing component surrounds the second sub-printing component, and the second sub-printing component fills and covers the side surface of the display panel facing the side and bottom of the bearing portion.

14. The method according to claim 12, wherein: The step of printing a printed component in the peripheral area of ​​the cover plate comprises: Printing a third sub-printing component, a fourth sub-printing component and a fifth sub-printing component in sequence in the peripheral area of ​​the cover plate; The third sub-printing component surrounds the fifth sub-printing component, the fifth sub-printing component surrounds the fourth sub-printing component, and the fourth sub-printing component fills and covers the side of the display panel facing the side and bottom of the bearing portion.

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