Display device and injection mold

Abstract

A display device and an injection mold. The display device comprises: a display substrate (10); a cover plate (23) provided on one side of the display substrate (10), wherein the corner of the cover plate (23) is provided with a chamfer (231), the chamfer (231) is located on the side of the cover plate (23) close to the display substrate (10), the chamfer (231) has a height in the thickness direction of the cover plate (23), the ratio of the height of the chamfer (231) to the maximum thickness of the cover plate (23) is greater than or equal to 0.03 and less than or equal to 0.5, the chamfer (231) has a beveled edge, and the included angle between the beveled edge and the plane where the display device (10) is located is greater than or equal to 50 degrees and less than or equal to 80 degrees; and an injection molded edge sealing member (40) comprising a first injection molding part (41) and a second injection molding part (42), at least part of the first injection molding part (41) being arranged on the peripheral side of the cover plate (23), and at least part of the second injection molding part (42) being arranged on the peripheral side of the display substrate (10).

Description

Display device, injection mold Technical Field

[0001] The present disclosure relates to, but is not limited to, the field of display technology, and specifically to a display device and an injection mold. Background Art

[0002] In a display device, the display substrate is typically attached to a cover plate, which is then connected to the midframe. The midframe, in turn, supports the display substrate via the cover plate. However, because the display substrate is attached to one side of the cover plate, the midframe needs to maintain a certain distance from the edge of the display substrate when connected to the cover plate to avoid interference with the display substrate. Therefore, the cover plate needs to have enough width for the midframe to be installed and enough width to avoid interference between the midframe and the display substrate, which increases the width of the display device's bezel.

[0003] The module injection molding process can reduce the width of the border area of ​​the display device, but cannot solve the problem of light leakage caused by the narrow border of the display device.

[0004] Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] A display device, comprising:

[0007] display substrate;

[0008] a cover plate disposed on one side of the display substrate; a chamfered corner of the cover plate, the chamfered corner being located on a side of the cover plate close to the display substrate; the chamfered corner having a height in a thickness direction of the cover plate, the ratio of the height of the chamfered corner to the maximum thickness of the cover plate being greater than or equal to 0.03 and less than or equal to 0.5; the chamfered corner having a beveled edge, the angle between the beveled edge and the plane where the display device is located being greater than or equal to 50 degrees and less than or equal to 80 degrees;

[0009] a light shielding layer, the light shielding layer being disposed between the display substrate and the cover plate, wherein the light shielding layer and an edge region of the cover plate overlap with an orthographic projection of an edge region of the display device on a plane;

[0010] The injection-molded edge banding comprises a first injection-molded part and a second injection-molded part, wherein at least a portion of the first injection-molded part is disposed on the peripheral side of the cover plate, and at least a portion of the second injection-molded part is disposed on the peripheral side of the display substrate.

[0011] In an exemplary embodiment, a ratio of the height of the chamfer to the maximum thickness of the cover plate is greater than or equal to 0.04 and less than or equal to 0.4.

[0012] In an exemplary embodiment, a ratio of the height of the chamfer to the maximum thickness of the cover plate is greater than or equal to 0.1 and less than or equal to 0.2.

[0013] In an exemplary embodiment, the first end of the first injection molded part is connected to the second injection molded part, and an end surface of the second end of the first injection molded part is substantially flush with a surface of the cover plate away from the display substrate.

[0014] In an exemplary embodiment, the first injection-molded portion and the second injection-molded portion are connected as one body and comprise the same material.

[0015] In an exemplary embodiment, the first injection-molded portion is annular and is disposed around the periphery of the cover plate.

[0016] In an exemplary embodiment, the ring width of the first injection-molded portion is greater than or equal to 0.05 mm and less than or equal to 1 mm.

[0017] In an exemplary embodiment, at least a portion of the second injection-molded edge sealing portion is disposed in the display substrate.

[0018] In an exemplary embodiment, a middle frame is further included, the middle frame including side frames and a bottom frame, the side frames are arranged on the side of the injection-molded edge sealing member away from the cover plate; the bottom frame is located on the side of the display substrate away from the cover plate.

[0019] In an exemplary embodiment, the side frames of the middle frame do not overlap with the orthographic projection of the cover plate on the plane where the display device is located.

[0020] In an exemplary embodiment, the injection-molded edge sealer further includes a third injection portion, and the third injection portion is disposed between the display substrate and the bottom frame.

[0021] In an exemplary embodiment, the third injection-molded portion is integrally connected to the second injection-molded portion and comprises the same material.

[0022] In an exemplary embodiment, a sealant layer is further included, and the sealant layer is disposed between the injection-molded edge sealing member and the middle frame.

[0023] In an exemplary embodiment, a middle frame is further included. The middle frame includes a bottom frame. The bottom frame is located on a side of the display substrate away from the cover plate. The injection-molded edge sealing member is disposed on the bottom frame.

[0024] In an exemplary embodiment, the cover plate has an outer surface at a side away from the display substrate, and an edge region of the outer surface is arc-shaped.

[0025] In an exemplary embodiment, the cover plate has an outer surface on a side away from the display substrate, and the outer surface is a plane.

[0026] In an exemplary embodiment, the injection molded edge banding has a first side surface away from the peripheral side surface of the cover plate, and the first side surface is arc-shaped. The first side surface of the injection molded edge banding is connected to the edge area of ​​the outer surface of the cover plate to form an arc surface.

[0027] In an exemplary embodiment, the injection molded edge banding has a top surface away from the bottom frame, a first side surface away from the peripheral side of the cover plate, and a rounded corner connecting the top surface and the first side surface, and the top surface is flat and roughly flush with the outer surface of the cover plate.

[0028] In an exemplary embodiment, the injection-molded edge banding has a first side surface away from the peripheral side of the cover plate, the first side surface is arc-shaped, the bottom frame has a second side surface, the second side surface is arc-shaped, and the first side surface is connected to the second side surface to form an arc surface.

[0029] In an exemplary embodiment, the injection molded edge banding has a first side surface away from the peripheral side of the cover plate, the first side surface is a plane, the bottom frame has a second side surface, the second side surface is a plane, and the first side surface is substantially flush with the second side surface.

[0030] In an exemplary embodiment, the injection molded edge banding has a bottom surface close to the bottom frame, the bottom surface is flat, the bottom frame has an upper surface close to the injection molded edge banding, the upper surface is flat, and the bottom surface is connected to the upper surface.

[0031] In an exemplary embodiment, the injection molded edge banding has a bottom surface close to the side of the bottom frame, and the bottom surface is provided with a first positioning groove. The bottom frame has an upper surface close to the side of the injection molded edge banding, and the upper surface is provided with a first positioning protrusion, and the first positioning protrusion is engaged with the first positioning groove.

[0032] In an exemplary embodiment, the first positioning slot is located in the middle area of ​​the bottom surface of the injection-molded edge banding, and the first positioning protrusion is located in the middle area of ​​the upper surface of the bottom frame; or, the first positioning slot is located in the edge area of ​​the bottom surface of the injection-molded edge banding, and the first positioning protrusion is located in the edge area of ​​the upper surface of the bottom frame.

[0033] In an exemplary embodiment, the first positioning protrusion includes at least one of a rectangle, a trapezoid, a triangle, and a strip shape inclined to the plane of the display device in a cross section perpendicular to the plane of the display device.

[0034] In an exemplary embodiment, the first positioning slot has a cross-section perpendicular to the plane where the display device is located, which includes at least one of a rectangle, a trapezoid, a triangle, and a strip shape that is inclined relative to the plane where the display device is located.

[0035] In an exemplary embodiment, the injection molded edge banding has a bottom surface close to the side of the bottom frame, and the bottom surface is provided with a second positioning protrusion. The bottom frame has an upper surface close to the side of the injection molded edge banding, and the upper surface is provided with a second positioning slot, and the second positioning protrusion is engaged with the second positioning slot.

[0036] In an exemplary embodiment, the second positioning protrusion is located in the middle area of ​​the bottom surface of the injection-molded edge banding, and the second positioning slot is located in the middle area of ​​the upper surface of the bottom frame; or, the second positioning protrusion is located in the edge area of ​​the bottom surface of the injection-molded edge banding, and the second positioning slot is located in the edge area of ​​the upper surface of the bottom frame.

[0037] In an exemplary embodiment, the second positioning protrusion includes at least one of a rectangle, a trapezoid, a triangle, and a strip inclined to the plane of the display device in a cross section perpendicular to the plane of the display device.

[0038] In an exemplary embodiment, the second positioning slot includes at least one of a rectangle, a trapezoid, a triangle, and a strip inclined to the plane of the display device in a cross section perpendicular to the plane of the display device.

[0039] In an exemplary embodiment, the display substrate includes a first fixing region, a bending region, and a second fixing region that are continuously arranged, and the second fixing region is arranged on the backlight side of the first fixing region via the bending region.

[0040] On the other hand, the present disclosure provides an injection mold, including an upper mold core and a lower mold core, the upper mold core and the lower mold core are used to enclose the display substrate and the cover plate in any of the display devices described above, forming an injection cavity connected to the edges of the display substrate and the cover plate, the injection cavity is used to accommodate the injection fluid that forms the injection-molded edge sealing member in the display device, the injection cavity includes an inner side surface, the inner side surface is located on the peripheral side of the cover plate, and a gap is formed between the inner side surface and the peripheral side surface of the cover plate.

[0041] In an exemplary embodiment, a connection point between the upper mold core and the lower mold core is substantially flush with a surface of the cover plate on a side away from the display substrate.

[0042] In an exemplary embodiment, an air extraction hole connected to the cover plate is provided in the lower mold core.

[0043] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0045] FIG1a is a schematic diagram of a cross-sectional structure of a display device;

[0046] FIG1b is a second schematic cross-sectional structural diagram of a display device;

[0047] FIG2 is a schematic diagram of a planar structure of a display device according to an embodiment of the present application;

[0048] FIG3 is a schematic cross-sectional view of a display device according to an embodiment of the present application;

[0049] FIG4 a is a schematic cross-sectional view of a display device according to an embodiment of the present application;

[0050] FIG4 b is a schematic cross-sectional view of another display device according to an embodiment of the present application;

[0051] FIG5 is a schematic planar structural diagram of a first injection-molded edge sealing portion of a display device according to an embodiment of the present application;

[0052] FIG6 a is a schematic diagram of a cross-sectional structure of a cover plate in a display device;

[0053] FIG6b is a light leakage simulation diagram of the display device in FIG6a;

[0054] FIG7 a is a schematic cross-sectional view of a cover plate in a display device according to an embodiment of the present application;

[0055] FIG7b is a light leakage simulation diagram of the display device in FIG7a;

[0056] FIG8 is an enlarged view of a chamfer of a cover plate in a display device according to an embodiment of the present application;

[0057] FIG9 is a schematic cross-sectional view of an injection mold according to an embodiment of the present application;

[0058] FIG10 is an enlarged view of an injection mold according to an embodiment of the present application;

[0059] FIG11a is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of a display device according to an embodiment of the present application;

[0060] FIG11 b is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0061] FIG12a is an enlarged view of a first positioning slot and a first positioning protrusion of a display device according to an embodiment of the present application;

[0062] FIG12 b is an enlarged view of a first positioning slot and a first positioning protrusion of another display device according to an embodiment of the present application;

[0063] FIG12c is an enlarged view of a first positioning slot and a first positioning protrusion of another display device according to an embodiment of the present application;

[0064] FIG12d is an enlarged view of a first positioning slot and a first positioning protrusion of another display device according to an embodiment of the present application;

[0065] FIG13 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0066] FIG14 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0067] FIG15 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0068] FIG16 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0069] FIG17a is an enlarged view of a second positioning slot and a second positioning protrusion of a display device according to an embodiment of the present application;

[0070] FIG17 b is an enlarged view of a second positioning slot and a second positioning protrusion of a display device according to an embodiment of the present application;

[0071] FIG17c is an enlarged view of a second positioning slot and a second positioning protrusion of a display device according to an embodiment of the present application;

[0072] FIG17 d is an enlarged view of a second positioning slot and a second positioning protrusion of a display device according to an embodiment of the present application;

[0073] FIG18 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0074] FIG19a is an enlarged view of the connection between the injection-molded edge seal and the middle frame of a display device according to an embodiment of the present application;

[0075] FIG19b is an enlarged view of the connection between the injection-molded edge seal and the middle frame of another display device according to an embodiment of the present application;

[0076] FIG19c is an enlarged view of the connection between the injection-molded edge seal and the middle frame of another display device according to an embodiment of the present application;

[0077] FIG19d is an enlarged view of the connection between the injection-molded edge seal and the middle frame of another display device according to an embodiment of the present application;

[0078] FIG20 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application;

[0079] FIG21 is a schematic cross-sectional view of a cover plate and an injection-molded edge seal of another display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the embodiments can be implemented in a variety of different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0081] In the drawings, the sizes of various components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or numerical values ​​shown in the drawings.

[0082] In this specification, ordinal numbers such as “first”, “second” and “third” are provided to avoid confusion among constituent elements, and are not intended to limit the number.

[0083] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the direction in which each constituent element is described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced according to the circumstances.

[0084] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; they can refer to mechanical connections or connections; they can refer to direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0085] In this specification, a transistor refers to a device that includes at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to the region through which current primarily flows.

[0086] In this specification, the first electrode can be a drain electrode and the second electrode can be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in this specification, "source electrode" and "drain electrode" may be interchanged.

[0087] In this specification, "connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables the transfer of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0088] In this specification, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus also includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus also includes a state where the angle is greater than 85° and less than 95°.

[0089] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0090] The term "about" in the present disclosure refers to a numerical value that is not strictly defined and allows for process and measurement errors.

[0091] Figure 1a is a schematic cross-sectional view of a display device. As shown in Figure 1a, the bonding area of ​​the display device may include a display substrate 10', a polarizer 21' disposed on the light-emitting side of the display substrate 10', an optical adhesive layer 22' disposed on the side of the polarizer 21' away from the display substrate 10, and a cover plate 23' disposed on the side of the optical adhesive layer 22' away from the display substrate 10.

[0092] In an exemplary embodiment, the binding area of ​​the display device may further include a middle frame 30 ′. The middle frame 30 ′ is provided with a mounting groove. The edge of the cover plate 23 ′ is disposed in the mounting groove so that the cover plate 23 ′ is fixed to the middle frame 30 ′.

[0093] The inventors of this application have found through research that the middle frame 30 ′ of the display device shown in FIG. 1 a needs to reserve a mounting groove for connecting with the cover plate 23 ′, which results in a larger size of the middle frame 30 ′ and makes it impossible to achieve a narrow frame.

[0094] Figure 1b is a second schematic cross-sectional view of a display device. As shown in Figure 1b, the bonding area of ​​the display device may include a display substrate 10', a polarizer 21' disposed on the light-emitting side of the display substrate 10', an optical adhesive layer 22' disposed on the side of the polarizer 21' away from the display substrate 10, and a cover plate 23' disposed on the side of the optical adhesive layer 22' away from the display substrate 10.

[0095] In an exemplary embodiment, the binding area of ​​the display device may further include a middle frame 30 ′ connected to the peripheral side of the cover plate 23 ′. An injection molded edge sealer 40 ′ is provided between the middle frame 30 ′ and the peripheral side of the display substrate 10 ′.

[0096] The inventors of this application have discovered that, in order to prevent light leakage from the edge region of the cover plate 23', a light-shielding layer 24' can be provided on the surface of the edge region of the cover plate 23', adjacent to the display substrate 10'. The light-shielding layer 24' is used to block light from escaping from the edge region of the cover plate 23'. Due to errors in the manufacturing process, the light-shielding layer 24' cannot completely cover the edge region of the cover plate 23'. The peripheral side surface of the light-shielding layer 24' is recessed relative to the peripheral side surface of the cover plate 23', resulting in a gap between the peripheral side surface of the light-shielding layer 24' and the peripheral side surface of the cover plate 23', which can cause light leakage.

[0097] The present disclosure provides a display device, comprising:

[0098] display substrate;

[0099] a cover plate, arranged on one side of the display substrate;

[0100] a middle frame, comprising side frames and a bottom frame, wherein the side frames are arranged around the display substrate and the cover plate; and the bottom frame is located on a side of the display substrate away from the cover plate;

[0101] The injection-molded edge banding comprises a first injection-molded part and a second injection-molded part, wherein at least a portion of the first injection-molded part is arranged between the peripheral side surface of the cover plate and the side frame, and at least a portion of the second injection-molded part is arranged between the peripheral side surface of the display substrate and the side frame.

[0102] FIG2 is a schematic diagram of a planar structure of a display device according to an embodiment of the present application. In an exemplary embodiment, as shown in FIG2 , the display device may include a display area 100 and a frame area 220 located around the display area 100. The frame area 220 includes at least a binding area 210 located on one side of the display area 100. The display area 100 of the display device may include a plurality of pixel units, at least one of which may include a first subpixel P1 that emits a first color light, a second subpixel P2 that emits a second color light, and a third subpixel P3 that emits a third color light. Each subpixel may include a circuit unit and a light-emitting unit. The circuit unit may include at least a pixel driving circuit. The pixel driving circuit is respectively connected to a scan signal line, a data signal line, and a light-emitting signal line. The pixel driving circuit is configured to receive a data voltage transmitted by the data signal line under the control of the scan signal line and the light-emitting signal line and output a corresponding current to the light-emitting device. The light-emitting unit may include at least a light-emitting device. The light-emitting device is respectively connected to the pixel driving circuit of the subpixel in which it is located. The light-emitting device is configured to emit light of corresponding brightness in response to the current output by the pixel driving circuit of the subpixel in which it is located.

[0103] In an exemplary embodiment, the display device may include a wearable device or a mobile phone. Wearable devices may include wristwatches (e.g., wristbands such as watches and bracelets) supported by the hand, shoes (e.g., shoes, socks, or other leg-worn products) supported by the foot, glasses (e.g., glasses, helmets, or headbands) supported by the head, as well as smart clothing, backpacks, crutches, accessories, etc. In the embodiments of this application, a smartwatch is used as an example.

[0104] In an exemplary embodiment, the display device includes a circular display area 100. In some embodiments, the display area 100 may also have a rectangular shape, an elliptical shape, or a polygonal shape such as a triangle, a pentagon, or the like.

[0105] In an exemplary embodiment, the first subpixel P1 may be a red subpixel (R) that emits red light, the second subpixel P2 may be a blue subpixel (B) that emits blue light, and the third subpixel P3 may be a green subpixel (G) that emits green light. In an exemplary embodiment, the subpixels may be rectangular, diamond-shaped, pentagonal, or hexagonal, and the three subpixels may be arranged horizontally, vertically, or in a triangular pattern, although this disclosure is not limited thereto.

[0106] In an exemplary embodiment, a pixel unit may include four sub-pixels, and the four sub-pixels may be arranged in a horizontal parallel arrangement, a vertical parallel arrangement, or a square arrangement, etc., which is not limited in the present disclosure.

[0107] In an exemplary embodiment, the light emitting device may include one of an organic light emitting diode (OLED), a light emitting diode (LED), and a quantum dot light emitting diode (QLED). The sub-pixel may emit light, for example, red, green, blue, or white light, through the light emitting device.

[0108] Figure 3 is a schematic diagram of the cross-sectional structure of a display device according to an embodiment of the present application, and Figure 3 is a cross-sectional view taken along the a-a' direction in Figure 2. Figure 3 illustrates the structure of three sub-pixels in the display device. In an exemplary embodiment, the display device according to the embodiment of the present disclosure may include more sub-pixels (see Figure 1). In addition, although Figure 3 shows that three sub-pixels are adjacent to each other, the embodiments of the present disclosure are not limited thereto. That is, other components such as wiring may be between the three sub-pixels. The three sub-pixels may not be pixels adjacent to each other. In Figure 3, the cross-sections of the three sub-pixels may not be cross-sections in the same direction of the display device.

[0109] In an exemplary embodiment, as shown in FIG3 , the display area of ​​the display device may include, on a plane perpendicular to the display device, a display substrate, a polarizer 21 disposed on the light-emitting side of the display substrate, an optical adhesive layer 22 disposed on a side of the polarizer 21 away from the display substrate, and a cover plate 23 disposed on a side of the optical adhesive layer 22 away from the display substrate. The polarizer 21 is connected to the cover plate 23 via the optical adhesive layer 22.

[0110] In an exemplary embodiment, the display substrate may include a driving circuit layer 102 disposed on a substrate 101, a light-emitting structure layer 103 disposed on a side of the driving circuit layer 102 away from the substrate 101, and an encapsulation structure layer 104 disposed on a side of the light-emitting structure layer 103 away from the substrate 101. In some possible implementations, the display device may include other film layers, such as a touch structure layer, etc., which is not limited in this disclosure.

[0111] In an exemplary embodiment, the substrate 101 may be a flexible substrate or a rigid substrate. The driving circuit layer 102 may include a plurality of circuit units, each of which may include at least a pixel driving circuit, and the pixel driving circuit may include a plurality of transistors and a storage capacitor. The light-emitting structure layer 103 may include a plurality of light-emitting units, each of which may include at least a light-emitting device, and the light-emitting device may include an anode, an organic light-emitting layer, and a cathode. The anode is connected to the pixel driving circuit, the organic light-emitting layer is connected to the anode, and the cathode is connected to the organic light-emitting layer. The organic light-emitting layer emits light of a corresponding color under the drive of the anode and the cathode. The encapsulation structure layer 104 may include a first encapsulation layer, a second encapsulation layer, and a third encapsulation layer stacked together. The first encapsulation layer and the third encapsulation layer may be made of inorganic materials, and the second encapsulation layer may be made of organic materials. The second encapsulation layer is arranged between the first encapsulation layer and the third encapsulation layer to form an inorganic material / organic material / inorganic material stacked structure, which can ensure that external water vapor cannot enter the light-emitting structure layer 103.

[0112] In exemplary embodiments, the organic light-emitting layer may include an emission layer (EML) and any one or more of the following: a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL).

[0113] In some exemplary embodiments, the encapsulation structure layer 104 may include a stacked first encapsulation layer, a second encapsulation layer, and a third encapsulation layer. The first encapsulation layer and the third encapsulation layer may be made of inorganic materials, and the second encapsulation layer may be made of organic materials. The second encapsulation layer is arranged between the first encapsulation layer and the third encapsulation layer to form an inorganic material / organic material / inorganic material stacked structure, which can ensure that external water vapor cannot enter the light-emitting structure layer.

[0114] Figure 4a is a schematic cross-sectional view of a display device according to an embodiment of the present application, and is a cross-sectional view taken along the direction b-b' in Figure 2. In an exemplary embodiment, as shown in Figure 4a, the binding area of ​​the display device may include a display substrate 10, a polarizer 21 disposed on the light-emitting side of the display substrate 10, an optical adhesive layer 22 disposed on the side of the polarizer 21 away from the display substrate 10, a light-shielding layer 24 disposed on the side of the optical adhesive layer 22 away from the display substrate 10, and a cover plate 23 disposed on the side of the light-shielding layer 24 away from the display substrate. The light-emitting side is the side of the display area of ​​the display substrate where an image is displayed.

[0115] In an exemplary embodiment, the cover plate 23 may be made of a transparent material, such as glass.

[0116] In an exemplary embodiment, the light-shielding layer 24 is located between the display substrate 10 and the cover plate 23 , and the light-shielding layer 24 overlaps with the orthographic projection of the edge area of ​​the cover plate 23 on the plane of the display device. The light-shielding layer 24 is used to block light and prevent light from leaking out of the edge area of ​​the cover plate 23 .

[0117] In an exemplary embodiment, the display device of the present application employs an outward bending design to bend a portion of the display substrate toward the backlight side of the display substrate, thereby reducing the size of the display device's border area and achieving a narrow border. The backlight side is the side of the display substrate's display area that does not display an image.

[0118] In an exemplary embodiment, the display substrate includes a first fixing region 11, a bending region 12, and a second fixing region 13, which are arranged in a continuous manner. The bending region 12 is arranged between the first fixing region 11 and the second fixing region 13 and has a C-shaped bend. A first end of the bending region 12 is connected to the first fixing region 11, and a second end of the bending region 12 is connected to the second fixing region 13. The first fixing region 11 and the second fixing region 13 are both flat. The second fixing region 13 is arranged on the backlight side of the first fixing region 11 via the bending region 12. A portion of the second fixing region 13 is located in the binding region 210 of the display device, and a portion of the second fixing region 13 is located in the display region 100 of the display device.

[0119] In an exemplary embodiment, the display substrate 10 may further include a support structure layer disposed between the first fixing area 11 and the second fixing area 13 on a plane perpendicular to the display device. A first surface of the support structure layer is connected to the backlight side of the first fixing area 11, and a second surface of the support structure layer is connected to a surface of the second fixing area 13.

[0120] In an exemplary embodiment, the supporting structure layer includes a first backplane 25, a super clean foam (SCF) composite film 26, a buffer layer 27, and a second backplane 28. The first backplane 25 is connected to the backlight side of the first fixed area 11 of the display substrate 10, the super clean foam composite film 26 is arranged on the side of the first backplane 25 away from the first fixed area 11, the buffer layer 27 is arranged on the side of the super clean foam composite film 26 away from the first fixed area 11, the second backplane 28 is arranged on the side of the buffer layer 27 away from the first fixed area 11, and the second backplane 28 is connected to the surface of the second fixed area 13.

[0121] In an exemplary embodiment, the ultra-clean foam composite film 26 can buffer the stress acting on the display substrate and dissipate the heat generated by the display substrate during operation, thereby providing a certain degree of protection for the display substrate.

[0122] In an exemplary embodiment, the display substrate 10 may further include a cover layer 29 on a plane perpendicular to the display device. At least a portion of the cover layer 29 is disposed on a surface of the bending region 12 that is distal from the support structure layer. The cover layer 29 is C-shaped and substantially the same shape as the bending region 12. The first end of the cover layer 29 may cover the first fixing region 11, and the second end of the cover layer 29 may cover the second fixing region 13. For example, the cover layer 29 may be an MCL (Metal Cover Layer) adhesive layer.

[0123] In an exemplary embodiment, the binding area of ​​the display device may further include a middle frame 30 on a plane perpendicular to the display device. The middle frame 30 is L-shaped and includes interconnected side frames 31 and a bottom frame 32. The side frames 31 are located at least around the cover plate 23 and the display substrate 10. The first ends of the side frames 31 are perpendicularly connected to the first ends of the bottom frame 32. The second ends of the side frames 31 extend opposite to the third direction D3. The end surfaces of the second ends of the side frames 31 are substantially flush with the surface of the cover plate 23 on the side away from the display substrate 10. The bottom frame 32 is located on the side of the display substrate that is away from the cover plate 23, between the second fixing region 13 and the bending region 12. The first end of the bottom frame 32 is perpendicularly connected to the first ends of the side frames 31, and the second end of the bottom frame 32 extends opposite to the first direction D1. The first direction D1 is parallel to the plane of the display device, and the third direction D3 is perpendicular to the plane of the display device.

[0124] In an exemplary embodiment, the side frames 31 of the middle frame 30 and the orthographic projections of the cover plate 23 on the plane where the display device is located do not overlap, and a first gap is provided between the side frames 31 of the middle frame 30 and the peripheral side surfaces of the cover plate 23, and the first gap can accommodate the first injection molded edge sealing portion of the injection molded edge sealing member.

[0125] In an exemplary embodiment, the bottom frame 32 of the middle frame 30 overlaps with the orthographic projections of the edge regions of the display substrate 10 and the cover plate 23 on the plane where the display device is located. A second gap is provided between the bottom frame 32 and the display substrate 10 to accommodate the third injection-molded edge sealing portion of the injection-molded edge sealing member.

[0126] In an exemplary embodiment, on a plane perpendicular to the display device, the binding area of ​​the display device may further include an injection molded edge seal 40, the injection molded edge seal 40 including a first injection molded edge seal portion 41, a second injection molded edge seal portion 42, and a third injection molded edge seal portion 43 sequentially arranged along the third direction D3, at least a portion of the first injection molded edge seal portion 41 is arranged between the peripheral side surface of the cover plate 23 and the side frame 31 of the middle frame 30, at least a portion of the second injection molded edge seal portion 42 is arranged between the peripheral side surface of the display substrate 10 and the side frame 31 of the middle frame 30, and at least a portion of the third injection molded edge seal portion 43 is arranged between the edge area of ​​the display substrate 10 and the bottom frame 32 of the middle frame 30.

[0127] The display device of the embodiment of the present disclosure can adopt edge injection molding (Insert Molding) technology, and the gap between the cover plate 23 and the peripheral side of the display substrate 10 and the middle frame 30 is sealed by the injection molding edge sealing member 40. The injection molding edge sealing member 40 can absorb the light leaking from the gap between the peripheral side of the light shielding layer 24 and the peripheral side of the cover plate 23, thereby solving the problem of light leakage at the edge of the display device, and can reduce the size of the frame of the display device to achieve a narrow frame.

[0128] In an exemplary embodiment, the first injection molded edge sealing portion 41 is arranged between the peripheral side surfaces of the cover plate 23 and the light-shielding layer 24 and the side frame 31 of the middle frame 30. The first injection molded edge sealing portion 41 does not overlap with the orthographic projection of the cover plate 23 and the light-shielding layer 24 on the plane where the display device is located. The first injection molded edge sealing portion 41 fills the gap between the peripheral side surfaces of the cover plate 23 and the light-shielding layer 24 and the side frame 31 of the middle frame 30 to absorb light and prevent light emitted from the display area from being diffusely reflected in the gap between the peripheral side surfaces of the cover plate 23 and the side frame 31 of the middle frame 30, thereby achieving the purpose of preventing light leakage.

[0129] In an exemplary embodiment, the first injection molding portion 41 is located on a side of the second injection molding portion 42 away from the bottom frame 32. The first end of the first injection molding portion 41 is connected to the first end of the second injection molding portion 42. The second end of the first injection molding portion 41 extends in a direction opposite to the third direction D3. The end surface of the second end of the first injection molding portion 41 is substantially flush with the surface of the cover plate 23 on the side away from the display substrate 10. The first end and the second end of the first injection molding portion 41 are opposite ends of the first injection molding portion 41 in the third direction D3.

[0130] In the exemplary embodiment, the first side surface of the first injection-molded edge seal 41 is connected to the peripheral side surfaces of the cover plate 23 and the light shielding layer 24, and the second side surface of the first injection-molded edge seal 41 is connected to the side frame 31 of the middle frame 30. The first side surface and the second side surface of the first injection-molded edge seal 41 are opposite sides of the first injection-molded edge seal 41 in the first direction D1.

[0131] In an exemplary embodiment, the first end of the second injection-molded edge seal 42 is connected to the first end of the first injection-molded edge seal 41, the second end of the second injection-molded edge seal 42 extends along the third direction D3, and the second end of the second injection-molded edge seal 42 is connected to the first end of the third injection-molded edge seal 43. The first end and the second end of the second injection-molded edge seal 42 are opposite ends of the second injection-molded edge seal 42 in the third direction D3.

[0132] In an exemplary embodiment, a portion of the second injection-molded edge sealing portion 42 is disposed in a cavity formed between the bending area 12 of the display substrate 10 and the peripheral side surface of the support structure layer, and fills the cavity; a portion of the second injection-molded edge sealing portion 42 is located between the peripheral side surface of the bending area 12 of the display substrate 10 and the side frame 31 of the middle frame 30.

[0133] In an exemplary embodiment, the second injection-molded edge sealing portion 42 overlaps with the orthographic projections of the edge regions of the cover plate 23 and the display substrate 10 on the plane where the display device is located.

[0134] In the exemplary embodiment, the first end of a portion of the third injection-molded edge seal 43 is connected to the second end of the second injection-molded edge seal 42, the first end of a portion of the third injection-molded edge seal 43 is connected to the cover layer 29 on the second fixing area 13 and the bending area 12, the second end of the third injection-molded edge seal 43 extends along the third direction D3, and the second end of the third injection-molded edge seal 43 is connected to the bottom frame 32 of the middle frame 30. The first end and the second end of the third injection-molded edge seal 43 are opposite ends of the third injection-molded edge seal 43 in the third direction D3.

[0135] In an exemplary embodiment, the first injection molded edge portion 41, the second injection molded portion 42 and the third injection molded edge portion 43 are an integrated structure and include the same material, that is, the first injection molded edge portion 41, the second injection molded portion 42 and the third injection molded edge portion 43 can be made of the same material and manufactured by the same injection molding process.

[0136] In an exemplary embodiment, the material of the injection-molded edge banding 40 may include epoxy resin, and the materials of the first injection-molded edge banding portion 41 , the second injection-molded portion 42 , and the third injection-molded edge banding portion 43 may all include epoxy resin.

[0137] In an exemplary embodiment, the binding area of ​​the display device may further include a sealant layer 50 , which is L-shaped and disposed between the injection-molded edge sealer 40 and the side frames 31 and bottom frame 32 of the middle frame 30 .

[0138] In an exemplary embodiment, the width of the sealant layer 50 in the first direction D1 is greater than or equal to 0.05 mm and less than or equal to 1 mm.

[0139] Figure 5 is a schematic planar structural diagram of the first injection-molded edge seal of a display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 5 , on a plane parallel to the display device, the shape of the cover plate 23 comprises a circle, the shape of the first injection-molded edge seal 41 comprises a ring, and the shape of the side frame 31 of the middle frame 30 comprises a ring. The first injection-molded edge seal 41 surrounds the cover plate 23 and is located between the peripheral side of the cover plate 23 and the side frame 31 of the middle frame 30.

[0140] In an exemplary embodiment, the ring width L of the first injection-molded edge sealing portion 41 is greater than or equal to 0.05 mm and less than or equal to 1 mm. For example, the ring width L is greater than or equal to 0.15 mm and less than or equal to 0.3 mm.

[0141] Figure 6a is a schematic cross-sectional view of a cover plate in a display device. As shown in Figure 6a, a chamfer 231' is provided at a corner of an edge of a cover plate 23' of the display device.

[0142] The inventors of this application have found that the light A' emitted from the display substrate 10' is reflected at the chamfer 231' of the cover plate 23', causing the light A' to be emitted toward the light-emitting side of the display substrate 10', resulting in light leakage in the display device.

[0143] Figure 6b is a light leakage simulation diagram of the display device in Figure 6a. A light leakage simulation test was conducted on the cover plate of the display device shown in Figure 6a. Light leakage occurred in the edge area of ​​the cover plate of the display device, as shown in Figure 6b.

[0144] Figure 4b is a schematic cross-sectional view of another display device according to an embodiment of the present application; Figure 7a is a schematic cross-sectional view of a cover plate in a display device according to an embodiment of the present application. In exemplary embodiments, as shown in Figures 4b and 7a, the shape of the cover plate 23 in the display device according to an embodiment of the present application comprises a rectangle, with chamfers 231 disposed at the corners of the edge regions of the cover plate 23. The chamfers 231 are located on the side of the cover plate 23 closest to the display substrate 10.

[0145] In an exemplary embodiment, the light-shielding layer 24 overlaps with the orthographic projection of the edge area of ​​the cover plate 23 on the plane where the display device is located. Due to errors in the preparation process of the light-shielding layer 24, the peripheral side surface of the light-shielding layer 24 is retracted relative to the peripheral side surface of the cover plate 23.

[0146] FIG8 is an enlarged view of the chamfer of a cover plate in a display device according to an embodiment of the present application, and FIG8 is an enlarged view of point a in FIG7a . In an exemplary embodiment, as shown in FIG7a and FIG8 , the cover plate 23 has a maximum thickness h1, which is the maximum distance between the surface of the cover plate 23 away from the display substrate and the surface of the cover plate 23 close to the display substrate; the chamfer 231 has a height h2 in the thickness direction (third direction D3) of the cover plate 23, and the ratio of the height h2 of the chamfer 231 to the maximum thickness h1 of the cover plate 23 is greater than or equal to 0.03 and less than or equal to 0.5. For example, the ratio of the height h2 of the chamfer 231 to the maximum thickness h1 of the cover plate 23 is greater than or equal to 0.04 and less than or equal to 0.4. Furthermore, the ratio of the height h2 of the chamfer 231 to the maximum thickness h1 of the cover plate 23 is greater than or equal to 0.1 and less than or equal to 0.2.

[0147] The cover plate 23 of the display device of the embodiment of the present disclosure has a chamfer 231 with the above-mentioned height h2, so that the light A is reflected at the chamfer 231 of the cover plate 23 and emitted toward the backlight side of the display substrate 10, thereby preventing light leakage from the edge of the display device. In addition, the chamfer 231 with the above-mentioned height h2 can reflect the light leaking from the gap between the side surface of the shading layer 24 and the side surface of the cover plate 23 toward the backlight side of the display substrate 10, thereby solving the problem of light leakage at the edge of the display device.

[0148] In an exemplary embodiment, the chamfer 231 of the cover plate 23 has a bevel 2311 , and an angle n between the bevel 2311 and the plane where the display device is located is greater than or equal to 50 degrees and less than or equal to 80 degrees. For example, the angle n is greater than or equal to 60 degrees and less than or equal to 70 degrees.

[0149] The cover plate 23 of the display device of the embodiment of the present disclosure has a chamfer 231 with the above-mentioned angle n, so that the light A is reflected at the chamfer 231 of the cover plate 23 and emitted toward the backlight side of the display substrate 10, thereby preventing light leakage from the edge of the display device. In addition, the chamfer 231 with the above-mentioned angle n can reflect the light leaking from the gap between the side surface of the shading layer 24 and the side surface of the cover plate 23 toward the backlight side of the display substrate 10, thereby solving the problem of light leakage at the edge of the display device.

[0150] Figure 7b is a light leakage simulation diagram of the display device in Figure 7a. A light leakage simulation test was conducted on the cover plate of the display device in Figure 7a. No light leakage occurred in the edge area of ​​the cover plate of the display device, as shown in Figure 7b.

[0151] An embodiment of the present application provides an injection mold, which can be used to injection mold a display substrate and a cover plate of the display device shown in FIG4 a to form an injection-molded edge sealing member.

[0152] Figure 9 is a schematic cross-sectional view of an injection mold according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 9, the injection mold comprises an upper mold core 61 and a lower mold core 62, located on a plane perpendicular to the injection mold. The upper mold core 61 and the lower mold core 62 are used to enclose the display substrate 10 and the cover plate 23 of the aforementioned display device, forming an injection cavity 71 connected to the edge regions of the display substrate 10 and the cover plate 23. The injection cavity 71 is used to accommodate the injection fluid that forms the injection-molded edge seal.

[0153] In an exemplary embodiment, the upper mold core 61 has an inverted U-shape. The upper mold core 61 includes a bottom wall 611 and a side wall 612. The bottom wall 611 of the upper mold core 61 is plate-shaped, and the side wall 612 is annular. A first end of the side wall 612 is perpendicularly connected to an edge of the bottom wall 611, and a second end of the side wall 612 extends along a third direction D3 and is perpendicularly connected to an edge of the lower mold core 62.

[0154] In an exemplary embodiment, the upper mold core 61 also includes a retaining wall 613 arranged on the bottom wall 611, the retaining wall 613 is annular, the first end of the retaining wall 613 is connected to the bottom wall 611, and the second end of the retaining wall 613 is connected to the surface of the display substrate 10 away from the cover plate 23. The retaining wall 613, the bottom wall 611, the side wall 612 of the upper mold core 61 and the lower mold core 62 form an injection cavity 71.

[0155] In an exemplary embodiment, the bottom wall 611 , the side wall 612 , and the retaining wall 613 of the upper mold core 61 may be connected as one body and comprise the same material.

[0156] In an exemplary embodiment, the lower mold core 62 is plate-shaped, and the surface of the lower mold core 62 close to the upper mold core 61 is flat. The edge of the surface of the lower mold core 62 close to the upper mold core 61 is perpendicularly connected to the second end of the side wall 612 of the upper mold core 61.

[0157] In an exemplary embodiment, the connection between the lower mold core 62 and the upper mold core 61 is a parting line 72 , and the parting line 72 is substantially flush with the surface of the cover plate 23 away from the display panel 10 .

[0158] In an exemplary embodiment, the upper mold core 61 may be made of a flexible material, such as silicone, and the lower mold core 62 may be made of a high molecular polymer, such as polytetrafluoroethylene.

[0159] In an exemplary embodiment, the injection mold further includes an upper mold frame 63 and a lower mold frame 64. The upper mold frame 63 has an inverted U-shape, covering the side of the upper mold core 61 away from the lower mold core 62 and connecting to the surface of the upper mold core 61 away from the lower mold core 62. The lower mold frame 64 has a U-shape, covering the side of the lower mold core 62 away from the upper mold core 61 and connecting to the surface of the lower mold core 62 away from the upper mold core 61.

[0160] The upper mold frame 63 and the lower mold frame 64 of the injection mold in the embodiment of the present application can support the upper mold core 61 and the lower mold core 62.

[0161] In an exemplary embodiment, both the upper mold frame 63 and the lower mold frame 64 may be made of metal, such as stainless steel.

[0162] In the exemplary embodiment, the injection mold further includes an inlet hole 65 and an outlet hole 66, both of which are disposed in the upper mold frame 63 and the upper mold core 61. The inlet hole 65 and the outlet hole 66 penetrate the upper mold frame 63 and the upper mold core 61 and communicate with the injection cavity 71. The inlet hole 65 and the outlet hole 66 are used to facilitate the flow of the injection fluid within the injection cavity 71, allowing the injection fluid to fill the injection cavity 71.

[0163] In the exemplary embodiment, the injection mold further includes an air extraction hole 67, which is disposed in the lower mold base 64 and the lower mold core 62. The air extraction hole 67 penetrates the lower mold base 64 and the lower mold core 62 and connects to the surface of the cover plate 23 away from the display substrate 10. The air extraction hole 67 is used to connect to a suction platform, which absorbs and secures the cover plate 23 within the injection mold through the air extraction hole 67, preventing the cover plate 23 and the display substrate 10 from deviating and ensuring injection molding accuracy.

[0164] Figure 10 is an enlarged view of an injection mold according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 10, the injection cavity 71 includes an inner side surface 711 on a plane perpendicular to the injection mold. At least a portion of the inner side surface 711 of the injection cavity 71 is located outside the peripheral side surface of the cover plate 23. A gap 712 is formed between the inner side surface 711 of the injection cavity 71 and the peripheral side surface of the cover plate 23. The gap 712 can accommodate the injection fluid that forms the injection-molded edge seal. The injection fluid in the gap 712 can form the first injection-molded edge seal portion of the injection-molded edge seal.

[0165] In an exemplary embodiment, the intervals of the gaps 712 in the first direction D1 may be greater than or equal to 0.05 mm and less than or equal to 1 mm. For example, the intervals of the gaps 712 in the first direction D1 may be greater than or equal to 0.15 mm and less than or equal to 0.3 mm.

[0166] Figure 11a is a schematic cross-sectional view of the cover plate and injection-molded edge banding of a display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 11a , the structure of the display device according to this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 4a , with the difference being that the injection-molded edge banding 40 in this exemplary embodiment is integrally connected to the side frames 31 of the middle frame 30 and is comprised of the same material. Specifically, the injection-molded edge banding 40 in the display device serves as the side frames 31 of the middle frame 30 and is disposed on the bottom frame 32. The injection-molded edge banding 40 is located around the cover plate 23 and the display substrate 10.

[0167] In an exemplary embodiment, a light-shielding layer (not shown in the figure) is provided between the cover plate 23 and the display substrate 10 in the display device of this exemplary embodiment. The light-shielding layer is basically the same as the light-shielding layer shown in Figure 4a, and the embodiment of this application will not be repeated here.

[0168] In an exemplary embodiment, the cover plate 23 in the display device of this exemplary embodiment is provided with a chamfer (not shown in the figure), the structure of which is substantially the same as that shown in FIG. 7 , and will not be described in detail in this embodiment of the present application.

[0169] In an exemplary embodiment, the cover plate 23 includes an outer surface 232, which is a surface of the cover plate 23 away from the display substrate 10. An edge region of the outer surface 232 of the cover plate 23 is arc-shaped.

[0170] In an exemplary embodiment, the bottom frame 32 of the middle frame 30 includes a second side surface 321 , and the second side surface 321 of the bottom frame 32 is a plane.

[0171] In an exemplary embodiment, the injection molded edge seal 40 includes a first side surface 401 and a bottom surface 402. The first side surface 401 is the side of the injection molded edge seal 40 that is away from the cover plate 23 and the peripheral side of the display substrate 10, while the bottom surface 402 is the side of the injection molded edge seal 40 that is closer to the bottom frame 32 of the middle frame 30. A first end of the first side surface 401 is connected to the outer surface 232 of the cover plate 23, and a second end of the first side surface 401 is connected to the second side surface 321 of the bottom frame 32 of the middle frame 30.

[0172] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding member 40 is connected to an edge region of the outer surface 232 of the cover plate 23 to form a curved surface.

[0173] In an exemplary embodiment, the bottom surface 402 of the injection molded edge banding 40 is planar.

[0174] In an exemplary embodiment, the bottom frame 32 of the middle frame 30 has an upper surface 322 close to the injection molded edge seal 40 . The upper surface 322 is a plane. The bottom surface 402 of the injection molded edge seal 40 is connected to the upper surface 322 of the bottom frame 32 .

[0175] Figure 11b is a schematic cross-sectional view of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In an exemplary embodiment, as shown in Figure 11b, the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 11a, except that a first positioning slot 81 is provided on the bottom surface 402 of the injection-molded edge banding 40. The first positioning slot 81 is located in the middle region of the bottom surface 402 of the injection-molded edge banding 40. A first positioning protrusion 82 is provided on the upper surface 322 of the bottom frame 32 of the middle frame 30. The first positioning protrusion 82 engages with the first positioning slot 81, securing the injection-molded edge banding 40 to the bottom frame 32 of the middle frame 30.

[0176] In an exemplary embodiment, a light-shielding layer (not shown in the figure) is provided between the cover plate 23 and the display substrate 10 in the display device of this exemplary embodiment. The light-shielding layer is basically the same as the light-shielding layer shown in Figure 4a, and the embodiment of this application will not be repeated here.

[0177] In an exemplary embodiment, the cover plate 23 in the display device of this exemplary embodiment is provided with a chamfer (not shown in the figure), the structure of which is substantially the same as that shown in FIG. 7 a , and will not be described in detail in this embodiment of the present application.

[0178] Figure 12a is an enlarged view of the first positioning groove and first positioning protrusion of a display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 12a, the first positioning protrusion 82 is rectangular in shape and located in the central region of the bottom frame 32 of the middle frame 30, as viewed in a plane perpendicular to the display device. The first positioning groove 81 is rectangular in shape and located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The dimensions of the first positioning protrusion 82 match those of the first positioning groove 81, allowing the first positioning protrusion 82 to engage with the first positioning groove 81.

[0179] Figure 12b is an enlarged view of the first positioning groove and first positioning protrusion of another display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 12b, the first positioning protrusion 82 has a trapezoidal shape, located in the central region of the bottom frame 32 of the middle frame 30, on a plane perpendicular to the display device. The first positioning groove 81 has a trapezoidal shape and is located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The dimensions of the first positioning protrusion 82 match those of the first positioning groove 81, allowing the first positioning protrusion 82 to engage with the first positioning groove 81.

[0180] Figure 12c is an enlarged view of the first positioning groove and first positioning protrusion of another display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 12c, the first positioning protrusion 82 is triangular in shape and located in the central region of the bottom frame 32 of the middle frame 30, as viewed in a plane perpendicular to the display device. The first positioning groove 81 is triangular in shape and located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The dimensions of the first positioning protrusion 82 match those of the first positioning groove 81, allowing the first positioning protrusion 82 to engage with the first positioning groove 81.

[0181] Figure 12d is an enlarged view of the first positioning slot and first positioning protrusion of another display device according to an embodiment of the present application. In an exemplary embodiment, as shown in Figure 12d, on a plane perpendicular to the display device, the shape of the first positioning protrusion 82 includes an elongated strip, the central axis of the first positioning protrusion 82 forms an acute angle with the plane of the display device, and the first positioning protrusion 82 is located in the central region of the bottom frame 32 of the middle frame 30. The shape of the first positioning slot 81 includes an elongated strip, the central axis of the first positioning slot 81 forms an acute angle with the plane of the display device, and the first positioning slot 81 is located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The dimensions of the first positioning protrusion 82 match those of the first positioning slot 81, allowing the first positioning protrusion 82 to engage with the first positioning slot 81.

[0182] FIG13 is a schematic diagram of the cross-sectional structure of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In an exemplary embodiment, as shown in FIG13 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in FIG11 b , except that the injection-molded edge banding 40 in the display device of this exemplary embodiment includes a top surface 403, a first side surface 401, a bottom surface 402, and a rounded corner 404. The top surface 403 is the surface of the injection-molded edge banding 40 away from the bottom frame, the first side surface 401 is the surface of the injection-molded edge banding 40 away from the side of the cover plate 23 and the display substrate 10, the bottom surface 402 is the surface of the injection-molded edge banding 40 close to the bottom frame 32 of the middle frame 30, and the rounded corner 404 connects the top surface 403 to the first side surface. A first end of the top surface 403 is connected to the outer surface 232 of the cover plate 23, a second end of the top surface 403 is connected to a first end of a rounded corner 404, a second end of the rounded corner 404 is connected to a first end of the first side surface 401, and a second end of the first side surface 401 is connected to the second side surface 321 of the bottom frame 32 of the middle frame 30. For example, the rounded corner 404 can be 90 degrees.

[0183] In an exemplary embodiment, the outer surface 232 of the cover plate 23 , the top surface 403 of the injection-molded edge banding 40 , the first side surface 401 of the injection-molded edge banding 40 , and the second side surface 321 of the bottom frame 32 are all planes.

[0184] In an exemplary embodiment, the outer surface 232 of the cover plate 23 is substantially flush with the top surface 403 of the injection molded edge banding 40 .

[0185] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding 40 is substantially flush with the second side surface 321 of the bottom frame 32 .

[0186] Figure 14 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of yet another display device according to an embodiment of the present application. In the exemplary embodiment shown in Figure 14 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 11b , except that the second side surface 321 of the bottom frame 32 of the middle frame 30 is curved.

[0187] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding member 40 is connected to an edge region of the outer surface 232 of the cover plate 23 to form a curved surface.

[0188] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding member 40 is connected to the second side surface 321 of the bottom frame 32 to form a curved surface.

[0189] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding member 40 is in a quarter-circular arc shape, and the second side surface 321 of the bottom frame 32 is in a quarter-circular arc shape.

[0190] Figure 15 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of yet another display device according to an embodiment of the present application. In the exemplary embodiment shown in Figure 15 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 11b , with the differences being that the edge region of the outer surface 232 of the cover plate 23 is planar, the first side surface 401 of the injection-molded edge banding 40 is curved, and the second side surface 321 of the bottom frame 32 of the middle frame 30 is curved.

[0191] In an exemplary embodiment, the first side surface 401 of the injection-molded edge banding member 40 is connected to the second side surface 321 of the bottom frame 32 to form a curved surface.

[0192] Figure 16 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 16 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 11b , with the difference being that a second positioning protrusion 83 is provided on the bottom surface 402 of the injection-molded edge banding 40, located in the central region of the bottom surface 402 of the injection-molded edge banding 40. A second positioning slot 84 is provided on the upper surface 322 of the bottom frame 32 of the middle frame 30, located in the central region of the bottom frame 32. The second positioning protrusion 83 engages with the second positioning slot 84, securing the injection-molded edge banding 40 to the bottom frame 32 of the middle frame 30.

[0193] Figure 17a is an enlarged view of the second positioning slot and second positioning protrusion of a display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 17a , the second positioning protrusion 83 is rectangular in shape and located in the central region of the bottom surface 402 of the injection-molded edge seal 40, as viewed in a plane perpendicular to the display device. The second positioning slot 84 is rectangular in shape and located in the central region of the bottom frame 32 of the middle frame 30. The dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0194] Figure 17b is an enlarged view of the second positioning slot and second positioning protrusion of another display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 17b , the second positioning protrusion 83 comprises a trapezoidal shape, located in the central region of the bottom surface 402 of the injection-molded edge banding 40, in a plane perpendicular to the display device. The second positioning slot 84 comprises a trapezoidal shape, located in the central region of the bottom frame 32 of the middle frame 30. The dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, enabling the second positioning protrusion 83 to engage with the second positioning slot 84.

[0195] Figure 17c is an enlarged view of the second positioning slot and second positioning protrusion of another display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 17c, the second positioning protrusion 83 is triangular in shape, located in the central region of the bottom surface 402 of the injection-molded edge banding 40, as viewed in a plane perpendicular to the display device. The second positioning slot 84 is triangular in shape, located in the central region of the bottom frame 32 of the middle frame 30. The dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0196] Figure 17d is an enlarged view of the second positioning slot and second positioning protrusion of another display device according to an embodiment of the present application. In this exemplary embodiment, as shown in Figure 17d , the second positioning protrusion 83 comprises an elongated strip in a plane perpendicular to the display device, with the central axis of the second positioning protrusion 83 forming an acute angle with the plane of the display device. The second positioning protrusion 83 is located in the central region of the bottom surface 402 of the injection-molded edge seal 40. The second positioning slot 84 comprises an elongated strip in shape, with the central axis of the second positioning slot 84 forming an acute angle with the plane of the display device. The second positioning slot 84 is located in the central region of the bottom frame 32 of the middle frame 30. The dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0197] FIG18 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in FIG18 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in FIG11 , except that a first positioning slot 81 and a second positioning protrusion 83 are provided on the bottom surface 402 of the injection-molded edge banding 40, and a first positioning protrusion 82 and a second positioning slot 84 are provided on the upper surface 322 of the bottom frame 32 of the middle frame 30. The first positioning protrusion 82 engages with the first positioning slot 81, and the second positioning protrusion 83 engages with the second positioning slot 84, thereby securing the injection-molded edge banding 40 to the bottom frame 32 of the middle frame 30.

[0198] Figure 19a is an enlarged view of the connection between the injection-molded edge banding and the middle frame of a display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 19a, on a plane perpendicular to the display device, the first positioning slot 81 and the second positioning protrusion 83 are both rectangular in shape. The first positioning slot 81 and the second positioning protrusion 83 are both located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The first positioning protrusion 82 and the second positioning slot 84 are both rectangular in shape. The first positioning protrusion 82 and the second positioning slot 84 are both located in the central region of the bottom edge 32 of the middle frame 30. The dimensions of the first positioning protrusion 82 match those of the first positioning slot 81, and the dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0199] Figure 19b is an enlarged view of the connection between the injection-molded edge banding and the middle frame of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 19b, on a plane perpendicular to the display device, the first positioning slot 81 and the second positioning protrusion 83 are both trapezoidal in shape. The first positioning slot 81 and the second positioning protrusion 83 are both located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The first positioning protrusion 82 and the second positioning slot 84 are both trapezoidal in shape. The first positioning protrusion 82 and the second positioning slot 84 are both located in the central region of the bottom edge 32 of the middle frame 30. The dimensions of the first positioning protrusion 82 match those of the first positioning slot 81, and the dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0200] Figure 19c is an enlarged view of the connection between the injection-molded edge banding and the middle frame of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 19c, on a plane perpendicular to the display device, the first positioning slot 81 and the second positioning protrusion 83 are both triangular in shape. Both the first positioning slot 81 and the second positioning protrusion 83 are located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The first positioning protrusion 82 and the second positioning slot 84 are both triangular in shape. Both the first positioning protrusion 82 and the second positioning slot 84 are located in the central region of the bottom edge 32 of the middle frame 30. The dimensions of the first positioning protrusion 82 match those of the first positioning slot 81, and the dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, allowing the second positioning protrusion 83 to engage with the second positioning slot 84.

[0201] Figure 19d is an enlarged view of the connection between the injection-molded edge banding and the middle frame of another embodiment of the present application. In this exemplary embodiment, as shown in Figure 19d , on a plane perpendicular to the display device, the first positioning slot 81 and the second positioning protrusion 83 are both elongated in shape. The central axes of the first positioning slot 81 and the second positioning protrusion 83 form an acute angle with the plane of the display device. Both the first positioning slot 81 and the second positioning protrusion 83 are located in the central region of the bottom surface 402 of the injection-molded edge banding 40. The first positioning protrusion 82 and the second positioning slot 84 are both elongated in shape. The central axes of the first positioning protrusion 82 and the second positioning slot 84 form an acute angle with the plane of the display device. Both the first positioning protrusion 82 and the second positioning slot 84 are located in the central region of the bottom edge 32 of the middle frame 30. The dimensions of the first positioning protrusion 82 match those of the first positioning slot 81, and the dimensions of the second positioning protrusion 83 match those of the second positioning slot 84, enabling the second positioning protrusion 83 to engage with the second positioning slot 84.

[0202] Figure 20 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 20 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 11b , except that a first positioning slot 81 is provided on the bottom surface 402 of the injection-molded edge banding 40. The first positioning slot 81 is located at the edge of the bottom surface 402 of the injection-molded edge banding 40. A first positioning protrusion 82 is provided on the upper surface 322 of the bottom frame 32 of the middle frame 30. The first positioning protrusion 82 engages with the first positioning slot 81, securing the injection-molded edge banding 40 to the bottom frame 32 of the middle frame 30.

[0203] Figure 21 is a schematic cross-sectional view of the cover plate and injection-molded edge banding of another display device according to an embodiment of the present application. In the exemplary embodiment, as shown in Figure 21 , the structure of the display device of this exemplary embodiment is substantially the same as that of the embodiment shown in Figure 16 , with the difference being that a second positioning protrusion 83 is provided on the bottom surface 402 of the injection-molded edge banding 40. The second positioning protrusion 83 is located at the edge of the bottom surface 402 of the injection-molded edge banding 40. A second positioning slot 84 is provided on the upper surface 322 of the bottom frame 32 of the middle frame 30. The second positioning protrusion 83 engages with the second positioning slot 84, securing the injection-molded edge banding 40 to the bottom frame 32 of the middle frame 30.

[0204] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures may refer to general designs. In the absence of conflict, the embodiments of this disclosure, that is, the features in the embodiments, may be combined with each other to obtain new embodiments.

[0205] It should be understood by those skilled in the art that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all should be included in the scope of the claims of the present disclosure.

Claims

1. A display device, comprising: a display substrate; a cover plate disposed on one side of the display substrate; a chamfer is provided at a corner position of the cover plate, the chamfer is located on a side of the cover plate close to the display substrate, the chamfer has a height in the thickness direction of the cover plate, and a ratio of the height of the chamfer to a maximum thickness of the cover plate is greater than or equal to 0.03 and less than or equal to 0.

5. The chamfer has an inclined side, and an angle between the inclined side and a plane where the display device is located is greater than or equal to 50 degrees and less than or equal to 80 degrees; a light-shielding layer, the light-shielding layer is disposed between the display substrate and the cover plate, and a positive projection of the light-shielding layer and an edge region of the cover plate in a plane where the display device is located overlaps; an injection molding edge-sealing member, including a first injection molding portion and a second injection molding portion, at least a part of the first injection molding portion is disposed on a periphery of the cover plate, and at least a part of the second injection molding portion is disposed on a periphery of the display substrate.

2. The display device according to claim 1, wherein, a ratio of the height of the chamfer to a maximum thickness of the cover plate is greater than or equal to 0.04 and less than or equal to 0.

4.

3. The display device according to claim 2, wherein, a ratio of the height of the chamfer to a maximum thickness of the cover plate is greater than or equal to 0.1 and less than or equal to 0.

2.

4. The display device according to claim 1, wherein, a first end of the first injection molding portion is connected to the second injection molding portion, and an end surface of a second end of the first injection molding portion is substantially flush with a surface of the cover plate on a side away from the display substrate.

5. The display device according to claim 1, wherein, the first injection molding portion and the second injection molding portion are connected as a whole and are made of the same material.

6. The display device according to claim 1, wherein, the first injection molding portion is annular and is disposed around the periphery of the cover plate.

7. The display device according to claim 6, wherein, a ring width of the first injection molding portion is greater than or equal to 0.05 mm and less than or equal to 1 mm.

8. The display device according to any one of claims 1 to 7, wherein, at least a part of the second injection molding edge-sealing portion is disposed in the display substrate.

9. The display device according to any one of claims 1 to 7 further includes a middle frame, the middle frame includes a side frame and a bottom frame, the side frame is disposed on a side of the injection molding edge-sealing member away from the cover plate; the bottom frame is located on a side of the display substrate away from the cover plate.

10. The display device according to claim 9, wherein, a positive projection of the side frame of the middle frame and the cover plate in a plane where the display device is located does not overlap.

11. The display device according to claim 9, wherein, the injection molding edge-sealing member further includes a third injection molding portion, and the third injection molding portion is disposed between the display substrate and the bottom frame.

12. The display device according to claim 11, wherein, the third injection molding portion and the second injection molding portion are connected as a whole and are made of the same material.

13. The display device according to claim 9 further includes a sealant layer, and the sealant layer is disposed between the injection molding edge-sealing member and the middle frame.

14. The display device according to any one of claims 1 to 7 further includes a middle frame, the middle frame includes a bottom frame, the bottom frame is located on a side of the display substrate away from the cover plate, and the injection sealing member is disposed on the bottom frame.

15. The display device according to claim 14, wherein, the cover plate has an outer surface on a side away from the display substrate, and an edge region of the outer surface is arc-shaped.

16. The display device according to claim 14, wherein, the cover plate has an outer surface on a side away from the display substrate, and the outer surface is a plane.

17. The display device according to claim 15, wherein, the injection sealing member has a first side surface on a side away from the peripheral side surface of the cover plate, the first side surface is arc-shaped, and the first side surface of the injection sealing member is connected to the edge region of the outer surface of the cover plate to form an arc surface.

18. The display device according to claim 16, wherein, the injection sealing member has a top surface on a side away from the bottom frame, a first side surface on a side away from the peripheral side surface of the cover plate, and a fillet connecting the top surface and the first side surface, the top surface is a plane and is substantially flush with the outer surface of the cover plate.

19. The display device according to claim 14, wherein, the injection sealing member has a first side surface on a side away from the peripheral side surface of the cover plate, the first side surface is arc-shaped, the bottom frame has a second side surface, the second side surface is arc-shaped, and the first side surface is connected to the second side surface to form an arc surface.

20. The display device according to claim 14, wherein, the injection sealing member has a first side surface on a side away from the peripheral side surface of the cover plate, the first side surface is a plane, the bottom frame has a second side surface, the second side surface is a plane, and the first side surface is substantially flush with the second side surface.

21. The display device according to claim 14, wherein, the injection sealing member has a bottom surface close to the bottom frame, the bottom surface is a plane, the bottom frame has an upper surface close to the injection sealing member, the upper surface is a plane, and the bottom surface is connected to the upper surface.

22. The display device according to claim 14, wherein, the injection sealing member has a bottom surface close to the bottom frame, the bottom surface is provided with a first positioning card slot, the bottom frame has an upper surface close to the injection sealing member, the upper surface is provided with a first positioning protrusion, and the first positioning protrusion is engaged with the first positioning card slot.

23. The display device according to claim 22, wherein, the first positioning card slot is located in a middle region of the bottom surface of the injection sealing member, and the first positioning protrusion is located in a middle region of the upper surface of the bottom frame; or, the first positioning card slot is located in an edge region of the bottom surface of the injection sealing member, and the first positioning protrusion is located in an edge region of the upper surface of the bottom frame.

24. The display device according to claim 22, wherein, The cross-section of the first positioning protrusion perpendicular to the plane where the display device is located includes at least one of a rectangle, a trapezoid, a triangle, and a long strip inclined with respect to the plane where the display device is located.

25. The display device according to claim 22, wherein, The cross-section of the first positioning slot perpendicular to the plane where the display device is located includes at least one of a rectangle, a trapezoid, a triangle, and a long strip inclined with respect to the plane where the display device is located.

26. The display device according to claim 14, wherein, The injection-molded edge sealing member has a bottom surface near one side of the bottom frame, the bottom surface is provided with a second positioning protrusion, the bottom frame has an upper surface near one side of the injection-molded edge sealing member, the upper surface is provided with a second positioning slot, and the second positioning protrusion is engaged with the second positioning slot.

27. The display device according to claim 26, wherein, The second positioning protrusion is located in the middle area of the bottom surface of the injection-molded edge sealing member, and the second positioning slot is located in the middle area of the upper surface of the bottom frame; or, the second positioning protrusion is located in the edge area of the bottom surface of the injection-molded edge sealing member, and the second positioning slot is located in the edge area of the upper surface of the bottom frame.

28. The display device according to claim 26, wherein, The cross-section of the second positioning protrusion perpendicular to the plane where the display device is located includes at least one of a rectangle, a trapezoid, a triangle, and a long strip inclined with respect to the plane where the display device is located.

29. The display device according to claim 26, wherein, The cross-section of the second positioning slot perpendicular to the plane where the display device is located includes at least one of a rectangle, a trapezoid, a triangle, and a long strip inclined with respect to the plane where the display device is located.

30. The display device according to any one of claims 1 to 7, wherein, The display substrate includes a continuously arranged first fixing area, a bending area, and a second fixing area, and the second fixing area is disposed on the backlight side of the first fixing area through the bending area.

31. An injection mold, comprising an upper mold core and a lower mold core, the upper mold core and the lower mold core are used to enclose a display substrate and a cover plate in any one of the display devices according to claims 1 to 30 above to form an injection cavity connected to the edges of the display substrate and the cover plate, the injection cavity is used to accommodate an injection fluid for forming the injection-molded edge sealing member in the display device, the injection cavity includes an inner side surface, and the inner side surface is located on the periphery of the cover plate and there is a gap between the inner side surface and the peripheral side surface of the cover plate.

32. The injection mold according to claim 31, wherein, The connection between the upper mold core and the lower mold core is substantially flush with the surface of the cover plate away from the display substrate.

33. The injection mold according to claim 31, wherein, An air extraction hole connected to the cover plate is provided in the lower mold core.

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