Display device and electronic apparatus

Abstract

The invention provides a display device, which comprises a display screen, a cover plate and a polymer layer, and is characterized in that the display screen comprises a bending part arranged at the side edge of the display screen; the cover plate covers the light emitting surface of the display screen; the polymer layer covers the bending part, the polymer layer is connected to the cover plate, and the side, away from the bending part, of the polymer layer protrudes out of the side face, close to the bending part, of the cover plate. The invention further provides the electronic equipment provided with the display device.

Description

Technical Field

[0001] The present invention relates to the field of display screens, and in particular to a display device and an electronic device provided with the display device. Background Art

[0002] How to reduce the width of the black borders of electronic display devices has always been a research direction for improving product refinement. This not only involves research on narrowing the black borders of electronic devices, but also poses a very severe challenge to the reliability of the entire electronic device and the mass production manufacturability of the technology. Figure 1 As shown, one of the display devices in the prior art generally includes a display screen body 12, a transparent cover plate 14 covering the front of the display screen body 12, and a shell 16. The bottom bending portion 122 of the display screen body 12 is covered by a molded edge sealant 124, and the edge sealant 124 is connected to the back of the display screen body 12. The display screen body 12 is accommodated in the inner cavity of the shell 16, and the edge sealant 124 is connected to the shell 16 by an adhesive 126; the edge sealant 124 includes a bending position fluctuation area 1241 and a safety margin area 1243 located outside the bottom bending portion 122. The safety margin area 1243 is provided at the bending position fluctuation area 1241 away from the bottom bending portion 122. One side; wherein, in order to ensure that the molded edge sealing glue 124 prevents the mold from damaging the bottom bending portion 122 during the molding process, the position fluctuation tolerance of the bottom bending portion 122 during the bonding process needs to be considered in the structural design. Therefore, a bending position fluctuation area 1241 is provided on the outer side of the bottom bending portion 122 to prevent the mold from damaging the bottom bending portion 122; secondly, considering the fit of the mold and the manufacturing tolerance of the mold, a safety margin area 1243 needs to be reserved on the side of the bending position fluctuation area 1241 away from the bottom bending portion 122. Therefore, the bending position fluctuation area 1241 and the safety margin area 1243 of the edge sealing glue 124 cannot be eliminated. However, the edge sealing glue 124 in the prior art is generally arranged on the back of the transparent cover plate 14 and retracted, so that the width of the black edge on the outside of the bottom bending portion 122 of the display device is equal to the sum of the width of the bending position fluctuation area 1241, the width of the safety margin area 1243 and the width of the retracted area 1245 of the edge sealing glue 124, which limits the further reduction of the black edge width of the display device. Summary of the Invention

[0003] The present application provides a display device with reduced black border width, and an electronic device provided with the display device.

[0004] The present application provides a display device, which includes a display screen, a cover plate and a polymer layer. The display screen includes a bent portion arranged on its side edge; the cover plate covers the light-emitting surface of the display screen; the polymer layer covers the bent portion, the polymer layer is connected to the cover plate, and the side of the polymer layer facing away from the bent portion protrudes from the side of the cover plate close to the bent portion.

[0005] The present application also provides an electronic device, which includes a display device and a middle frame; the middle frame is provided with an inner cavity, the display device is accommodated in the inner cavity of the middle frame, the display device includes a display screen, a cover plate and a polymer layer, the display screen includes a bent portion provided on its side edge; the cover plate covers the light-emitting surface of the display screen; the polymer layer covers the bent portion, the polymer layer is connected to the cover plate, the side of the polymer layer facing away from the bent portion protrudes from the side of the cover plate close to the bent portion, and the polymer layer of the display device is connected to the inner surface of the middle frame by a connecting glue.

[0006] The polymer layer of the display device of the present application is covered on the bent portion and then connected to the cover plate, and the end of the polymer layer facing away from the bent portion protrudes from the side of the cover plate, so that the width of the black edge of the display device is equal to the width of the side of the outer arc surface of the polymer layer facing away from the bent portion minus the width of the part of the polymer layer protruding from the side of the cover plate; therefore, the distance between the side of the cover plate and the outer arc surface of the bent portion of the display device of the present application is greatly narrowed, which can minimize the width of the black edge of the display device, expand the display area of ​​the display device, increase the screen-to-body ratio, and enhance the competitiveness of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the implementation. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0008] Figure 1 It is a schematic cross-sectional structural diagram of one of the display devices in the prior art.

[0009] Figure 2 It is a schematic cross-sectional structural diagram of an electronic device in the first embodiment of the present application.

[0010] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the electronic device in the figure.

[0011] Figure 4 yes Figure 3 An enlarged view of the display device in FIG.

[0012] Figure 5 yes Figure 4 Schematic diagram of the exploded display device in FIG.

[0013] Figure 6 It is a schematic cross-sectional structural diagram of an electronic device in the second embodiment of the present application.

[0014] Figure 7 yes Figure 6 An enlarged view of the display device in FIG.

[0015] Figure 8 It is a schematic cross-sectional structural diagram of an electronic device in the third embodiment of the present application.

[0016] Figure 9 yes Figure 8 An enlarged view of the display device in FIG.

[0017] Figure 10 It is a schematic cross-sectional structural diagram of a display device in the fourth embodiment of the present application.

[0018] Figure 11 It is a schematic cross-sectional structural diagram of an electronic device in the fifth embodiment of the present application.

[0019] Figure 12 yes Figure 11 An enlarged view of the display device in FIG.

[0020] Figure 13 It is a schematic cross-sectional structural diagram of a display device in the sixth embodiment of the present application.

[0021] Description of main numbers:

[0022] 100. Electronic device; 20. Display device; 22. Display screen; 220. Bend portion; 221. Display screen body; 2211. Optical adhesive film; 2212. Polarizer; 2213. Touch layer; 2214. First optical adhesive layer; 2215. Liquid crystal layer; 2216. Second optical adhesive layer; 2217. Backlight layer; 2218. Substrate layer; 222. Light emitting surface; 223. Outer arc surface; 224. Space; 24. Cover plate; 241. Side surface; 25. Polymerization Material layer; 251, first colloid part; 253, second colloid part; 254, first connecting part; 255, protrusion; 256, first connecting surface; 257, second connecting part; 2501, first avoidance groove; 2503, second avoidance groove; 2505, third avoidance groove; 27, connecting glue; 30, middle frame; 32, first inner cavity; 33, outer peripheral wall; 34, second inner cavity; 35, supporting wall; 36, avoidance groove; 50, circuit board; 60, battery; 70, back plate. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0024] In addition, the following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments that may be implemented in the present application. Directional terms mentioned in this application, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," and "side," are only used with reference to the directions in the accompanying drawings. Therefore, the directional terms used are intended to better and more clearly illustrate and understand the present application, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "disposed on" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to mechanical connection; they may refer to direct connection, indirect connection via an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0026] Please also refer to Figure 2-Figure 5The electronic device 100 in the first embodiment of the present invention includes a display device 20, a middle frame 30, a circuit board 50, a battery 60, and a back panel 70. The middle frame 30 has inner cavities on opposite sides. The display device 20 is accommodated in the inner cavity of one side of the middle frame 30, and the circuit board 50 and the battery 60 are both accommodated in the inner cavity of the other side of the middle frame 30. Specifically, the middle frame 30 has a first inner cavity 32 and a second inner cavity 34 on opposite sides. The display device 20 is accommodated in the first inner cavity 32, and the circuit board 50 and the battery 60 are both accommodated in the second inner cavity. 34; The display device 20 includes a display screen 22, a cover plate 24 and a polymer layer 25. The display screen 22 includes a bending portion 220 and a display screen body 221 provided at its side edge. The bending portion 220 is connected to the side of the display screen body 221; the cover plate 24 covers the light-emitting surface 222 of the display screen 22, the polymer layer 25 covers the bending portion 220, and the polymer layer 25 is connected to the cover plate 24. The side of the polymer layer 25 facing away from the bending portion 220 protrudes from the side surface 241 of the cover plate 24 close to the bending portion 220 to form a protrusion 255. The bent portion 220 has an outer curved surface 223 facing away from the display screen body 221. The width between the side surface 241 of the cover plate 24 and the outer curved surface 223 is the width of the black border 250 of the display device 20; that is, the width L1 of the black border 250 of the display device 20 is equal to the width L2 of the polymer layer 25 on the side facing away from the outer curved surface 223 of the bent portion 220 minus the width L3 of the protrusion 255, that is, L1 = L2 - L3.

[0027] Compared to the prior art, in which the polymer layer of the display screen is entirely connected to the back of the cover plate, that is, the polymer layer is contracted to the back of the cover plate and does not extend out of the side of the cover plate, so that the width of the black edge of the display screen is at least equal to the width of the polymer layer outside the outer arc surface of the folded portion of the display screen; the polymer layer 25 of the display device 20 of the present application is connected to the cover plate 24 after covering the folded portion 220, and the end of the polymer layer 25 away from the folded portion 220 protrudes from the side 241 of the cover plate 24, so that the width of the black edge 250 of the display device 20 is only equal to the width from the side 241 of the cover plate 24 to the folded portion 220. 20, that is, the width L1 of the black edge 250 is equal to the width L2 of the polymer layer 25 on the side of the outer arc surface 223 away from the bending portion 220 minus the width L3 of the protrusion 255; therefore, the distance between the side 241 of the cover plate 24 of the display device 20 of the present application and the outer arc surface 223 of the bending portion 220 is greatly narrowed, that is, the width L1 of the black edge 250 is greatly narrowed, which can minimize the width L1 of the black edge 250 of the display device 20, expand the display area of ​​the display device 20, increase the screen-to-body ratio, and enhance the competitiveness of the electronic device 100.

[0028] The polymer layer 25 includes a first colloid portion 251 and a second colloid portion 253. The first colloid portion 251 is located outside the bend portion 220, that is, on the side of the bend portion 220 facing away from the display screen body 221. The second colloid portion 253 is located on the side of the first colloid portion 251 facing away from the bend portion 220. It can be understood that the area where the first colloid portion 251 is located is the bending position fluctuation area of ​​the bend portion 220, ensuring the position fluctuation tolerance of the bend portion 220 during the lamination process and preventing the mold from damaging the bend portion 220 during the molding process. The area where the second colloid portion 253 is located is a safety margin area reserved on one side of the bend portion 220 to meet the fitting and manufacturing tolerances of the mold for molding the polymer layer 25. At least a portion of the polymer layer 25 protrudes from the cover plate 24 near the side 241 of the bend portion 220 to form a protrusion 255. The width of the polymer layer 25 protruding from the side of the cover plate 24 near the bent portion 220 is greater than 0.03 mm and less than 0.35 mm. In other words, the width of the protrusion 255 is greater than 0.03 mm and less than 0.35 mm. Because at least a portion of the second colloid portion 253 of the polymer layer 25 extends beyond the side 241 of the cover plate 24, the width of the black border 250 of the display device 20 is equal to the sum of the widths of the first colloid portion 251 and the second colloid portion 253, minus the width of the protrusion 255. Therefore, the width of the black border 250 of the display device 20 is less than the sum of the widths of the first colloid portion 251 and the second colloid portion 253. This reduces the width of the black border 250 on the outside of the display device 20, expands the display area of ​​the display device 20, and improves the screen-to-body ratio.

[0029] In this embodiment, the second colloid portion 253 and at least a portion of the first colloid portion 251 protrude from the side of the cover plate 24 near the bent portion 220 on a side away from the bent portion 220 to form a protrusion 255. The first colloid portion 251 is connected to the side surface 241 of the cover plate 24 and the surface facing the display screen body 221. That is, the second colloid portion 253 and the portion of the first colloid portion 251 connected to the second colloid portion 253 extend beyond the side surface 241, so that the width of the black border 250 of the display device 20 is equal to the sum of the width of the first colloid portion 251 and the width of the second colloid portion 253 minus the width of the protrusion 255. Therefore, the width of the black border 250 of the display device 20 is much smaller than the sum of the width of the first colloid portion 251 and the width of the second colloid portion 253, further reducing the width of the black border 250 on the outside of the display device 20, expanding the display area of ​​the display device 20, and improving the screen-to-body ratio.

[0030] In this embodiment, half of the width of the first colloid portion 251 extends beyond the side surface 241, and the width of the protruding portion 255 is equal to the sum of the width of the second colloid portion 253 and half of the width of the first colloid portion 251. This makes the width of the black border 250 of the display device 20 equal to half of the width of the first colloid portion 251, significantly reducing the width of the black border 250 on the outside of the display device 20.

[0031] In other embodiments, 0.1 times, 0.2 times, 0.3 times, 0.4 times, 0.6 times, 0.7 times, 0.8 times or 0.9 times the width of the first colloid portion 251 and the second colloid portion 253 both extend out of the side surface 241 of the cover plate 24; the width of the protrusion 255 is equal to the sum of the width of the second colloid portion 253 and 0.1 times the width of the first colloid portion 251, the sum of the width of the second colloid portion 253 and 0.2 times the width of the first colloid portion 251, the sum of the width of the second colloid portion 253 and 0.3 times the width of the first colloid portion 251, the sum of the width of the second colloid portion 253 and 0.4 times the width of the first colloid portion 251, the sum of the width of the second colloid portion 253 and 0.6 times the width of the first colloid portion 251, and the sum of the width of the second colloid portion 253 and 0.7 times the width of the first colloid portion. 251, the sum of the width of the second colloid portion 253 and 0.8 times the width of the first colloid portion 251, or the sum of the width of the second colloid portion 253 and 0.9 times the width of the first colloid portion 251; so that the width of the black border 250 of the display device 20 is equal to 0.9 times the width of the first colloid portion 251, 0.8 times the width of the first colloid portion 251, 0.7 times the width of the first colloid portion 251, 0.6 times the width of the first colloid portion 251, 0.4 times the width of the first colloid portion 251, 0.3 times the width of the first colloid portion 251, 0.2 times the width of the first colloid portion 251, or 0.1 times the width of the first colloid portion 251; the width of the black border 250 on the outer side of the display device 20 is reduced, the display area of ​​the display device 20 is expanded, and the screen-to-body ratio is improved.

[0032] Optionally, the polymer layer 25 further includes a first connecting portion 254. The first connecting portion 254 is located on a side of the first colloid portion 251 facing away from the second colloid portion 253. The first connecting portion 254 is connected to the back of the display screen body 221. The width of the first connecting portion 254 is greater than the sum of the widths of the first colloid portion 251 and the second colloid portion 253. Specifically, one side of the first connecting portion 254 is connected to a side of the first colloid portion 251 facing away from the second colloid portion 253. The first connecting portion 254 covers a side of the bent portion 220 facing away from the cover plate 24. The first connecting portion 254 is used to connect to the middle frame 30. The polymer layer 25 also includes a second connecting portion 257, which is located on the side of the first colloid portion 251 facing away from the second colloid portion 253. The second connecting portion 257 is connected to the bent portion 220, the cover plate 24, and the first connecting portion 254. Specifically, a space 224 is defined between the bent portion 220 and the side of the display screen body 221. The second connecting portion 257 fills the space 224 and is connected to the outer curved surface 223 of the bent portion 220 and the surface of the cover plate 24 facing the display screen body 221. The back surface refers to the surface opposite to the light-emitting surface of the display screen body 221, and the front surface refers to the surface facing the same direction as the light-emitting surface of the display screen body 221.

[0033] Optionally, the polymer layer 25 has a first connection surface 256 facing away from the cover plate 24. The first connection surface 256 includes a surface of the first connection portion 254 facing away from the cover plate 24 and a surface of the first colloid portion 251 facing away from the cover plate 24. The first connection surface 256 is used to connect to the middle frame 30. In this embodiment, the surface of the first connection portion 254 facing away from the cover plate 24 is coplanar with the surface of the first colloid portion 251 facing away from the cover plate 24.

[0034] In this embodiment, the width of the black border 250 ranges from 0.5 mm to 1.5 mm, that is, the width of the black border 250 can be, but is not limited to, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm. The width of the first colloid portion 251 is approximately 0.2 mm. Specifically, the width of the first colloid portion 251 ranges from 0.15 mm to 0.25 mm, that is, the width of the first colloid portion 251 can be, but is not limited to, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, or 0.25 mm. The width of the second colloid portion 253 is 0.03 mm-0.1 mm, that is, the width of the second colloid portion 253 can be but is not limited to 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm or 0.10 mm, etc.; the width range of the protrusion 255 is within 0.2 mm, that is, the width of the protrusion 255 can be but is not limited to 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm or 0.20 mm, etc. The polymer layer 25 is made of a polymer, which may be, but is not limited to, UV adhesive, PUR hot melt adhesive, or polyurethane reactive hot melt adhesive. The polymer layer 25 may be formed on the bent portion 220 of the display screen 22 by, but is not limited to, a mold forming process or a glue pouring process.

[0035] like Figure 4 and Figure 5 As shown, the display screen body 221 also includes an optical adhesive film 2211, a polarizer 2212, a touch layer 2213, a first optical adhesive layer 2214, a liquid crystal layer 2215, a second optical adhesive layer 2216, a backlight layer 2217 and a substrate layer 2218 stacked in sequence; the cover plate 24 covers the side of the optical adhesive film 2211 away from the polarizer 2212, the polymer layer 25 is connected to the side of the display screen body 221 and the cover plate 24, and the polymer layer 25 covers the bending portion 220 and the back of the display screen body 221 away from the cover plate 24.

[0036] like Figure 2 and Figure 3As shown, the middle frame 30 includes an outer peripheral wall 33 and a support wall 35. The outer periphery of the support wall 35 is connected to the inner side of the outer peripheral wall 33. One side of the outer peripheral wall 33 and the inner surface of the outer peripheral wall 33 form a first inner cavity 32, and the opposite side of the outer peripheral wall 33 and the inner surface of the outer peripheral wall 33 form a second inner cavity 34. The middle frame 30 is provided with a relief groove 36 on the inner side of the first inner cavity 32. Specifically, the relief groove 36 is located on the inner side of the support wall 35 facing the first inner cavity 32. When the display device 20 is accommodated in the first inner cavity 32, the portion of the polymer layer 25 protruding from the side surface 241 of the cover plate 24 is accommodated in the relief groove 36, that is, the protruding portion 255 of the polymer layer 25 is accommodated in the relief groove 36. The circuit board 50 and battery 60 are both housed in the second inner cavity 34 of the middle frame 30. The back panel 70 is connected to the side of the middle frame 30 facing away from the display device 20. The back panel 70 covers the second inner cavity 34. The circuit board 50 is electrically connected to the display screen body 221 and the battery 60. The battery 60 is used to provide power to the circuit board 50 and the display screen body 221. The electronic device 100 also includes a connecting adhesive 27. The polymer layer 25 of the display device 20 is connected to the inner surface of the middle frame 30 via the connecting adhesive 27. When assembling the display device 20 to the middle frame 30, the connecting adhesive 27 is bonded to the first connecting surface 256 of the polymer layer 25. The display device 20 is then installed in the first inner cavity 32 of the middle frame 30, so that the protrusion 255 is accommodated in the avoidance groove 36. The side of the connecting adhesive 27 facing away from the display device 20 is connected to the support wall 35.

[0037] The protrusion 255 of the display device 20 of the present application is accommodated in the avoidance groove 36 of the middle frame 30, so that the width of the black border 250 of the electronic device 100 is equal to the sum of the width of the first colloid part 251 and the width of the second colloid part 253 minus the width of the protrusion 255, so that the width of the black border 250 is significantly reduced, the display area of ​​the display device 20 is expanded, the screen-to-body ratio is increased, and the competitiveness of the electronic device 100 is enhanced.

[0038] like Figure 6-Figure 7As shown, the structure of the electronic device 100a provided in the second embodiment of the present application is similar to that of the electronic device 100 provided in the first embodiment, except that: the first adhesive portion 251 in the second embodiment is connected to the back of the cover plate 24 facing the display screen, and a first avoidance groove 2501 is provided between the first adhesive portion 251 and the cover plate 24. In other words, the second adhesive portion 253 and at least a portion of the first adhesive portion 251 protrude from the side surface 241 of the cover plate 24 near the bend 220 on the side away from the bend 220 to form a protrusion 255. The protrusion 255 is connected to the surface of the cover plate 24 facing the display screen body 221, and a first avoidance groove 2501 is provided between the protrusion 255 and the cover plate 24. The width of the polymer layer protruding from the side surface of the cover plate 24 near the bend 220 is greater than 0.03 mm and less than 0.35 mm, that is, the width of the protrusion 255 is greater than 0.03 mm and less than 0.35 mm. The protrusion 255 is recessed at its connection to the cover plate 24, thereby increasing the gap between the middle frame 30 and the protrusion 255 at the first relief groove 2501. This prevents the deformation of the middle frame 30 from impacting the polymer layer 25 when the electronic device 100a is dropped, thereby improving the reliability of the electronic device 100a. The addition of the first relief groove 2501 between the outer peripheral wall 33 and the protrusion 255 increases the gap between the outer peripheral wall 33 and the protrusion 255. When the electronic device 100a is dropped, the outer peripheral wall 33 may deform toward this gap due to the impact. However, due to the larger gap, the deformation of the outer peripheral wall 33 will not collide with the protrusion 255 and damage the display device 20a, thereby improving the reliability of the display device 20a.

[0039] In the display device 20a of this embodiment, the second colloid portion 253 and at least a portion of the first colloid portion 251 of the polymer layer 25 protrude from the side surface 241, and the width of the polymer layer 25 facing the back of the cover plate 24 is reduced, so that the width of the black border 250 of the display device 20a is smaller than the width of the first colloid portion 251. This reduces the width of the black border 250 on the outside of the display device 20a, expands the display area of ​​the display device 20a, and improves the screen-to-body ratio. Secondly, there is a large gap between the middle frame 30 and the polymer layer 25, which can avoid the risk of the outer peripheral wall 33 of the electronic device 100a being impacted and deformed and colliding with the protruding portion 255 when the electronic device 100a falls, thereby improving the competitiveness of the electronic device 100.

[0040] like Figure 8 and Figure 9As shown, the structure of the electronic device 100b provided in the third embodiment of the present application is similar to that of the electronic device 100 provided in the first embodiment, except that: in the third embodiment, the first colloid portion 251 and the second colloid portion 253 both protrude from the side surface 241 of the cover plate 24 near the bent portion 220, and the side surface 241 of the cover plate 24 is tangent to the outer curved surface 223 of the bent portion 220. In other words, the polymer layer 25 on the side of the bent portion 220 facing away from the display screen body 221 protrudes from the side surface 241 to form a protruding portion 255; the width of both the first colloid portion 251 and the second colloid portion 253 protruding from the side surface of the cover plate 24 near the bent portion 220 is equal to the sum of the widths of the first colloid portion 251 and the second colloid portion 253. In other words, the width of the protruding portion 255 is equal to the sum of the widths of the first colloid portion 251 and the second colloid portion 253. Specifically, the width of the first colloid portion 251 and the second colloid portion 253 protruding from the side of the cover plate 24 near the bent portion 220 ranges from 0.18 mm to 0.35 mm, that is, the width of the protrusion 255 ranges from 0.18 mm to 0.35 mm. Because the second colloid portion 253 and the first colloid portion 251 in this embodiment are both located outside the side 241 of the cover plate 24, the width of the black border of the display device 20b is equal to zero, that is, the display device 20b in this embodiment can be achieved without a black border. The second connecting portion 257 is connected to the bent portion 220, the side 241 of the cover plate 24, and the surface of the cover plate 24 facing the display screen body 221. The protrusion 255 is accommodated in the avoidance groove 36 of the middle frame 30.

[0041] In the display device 20b of this embodiment, the second colloid portion 253 and the first colloid portion 251 of the polymer layer 25 both extend out of the side surface 241 of the cover plate 24. The side surface 241 of the cover plate 24 is tangent to the outer arc surface 223 of the bent portion, so that the display device 20b has no black edges, the display area of ​​the display device 20b is expanded, the screen-to-body ratio is increased, and the appearance of the electronic device 100b is improved.

[0042] like Figure 10As shown, the structure of the electronic device provided by the fourth embodiment of the present application is similar to the structure of the electronic device provided by the third embodiment, except that: in the fourth embodiment, only the second connecting portion 257 of the polymer layer 25 is connected to the surface of the cover plate 24 facing the display screen body 221, and the first colloid portion 251 and the second colloid portion 253 protrude from the side surface 241 of the cover plate 24 to form a protrusion 255, and a second avoidance groove 2503 is provided between the protrusion 255 and the cover plate 24, so as to increase the gap between the middle frame and the protrusion 255 at the second avoidance groove 2503, which can prevent the electronic device from damaging the display device 20c due to the impact on the polymer layer 25 when the middle frame is deformed by falling, thereby improving the reliability of the electronic device. That is, since the second avoidance groove 2503 is added between the outer peripheral wall of the middle frame and the protrusion 255, the gap between the outer peripheral wall and the protrusion 255 is increased. When the electronic device falls, the outer peripheral wall may be impacted and deformed toward the second avoidance groove 2503; due to the large gap, the deformation of the outer peripheral wall will not hit the protrusion 255 and damage the display device 20c, thereby improving the reliability of the display device 20c.

[0043] In the display device 20c of this embodiment, the first colloid portion 251 and the second colloid portion 253 of the polymer layer 25 both extend out of the side surface 241 of the cover plate 24, such that the side surface 241 is tangent to the outer curved surface 223. This achieves a black-borderless display device 20, expands the display area of ​​the display device 20c, and improves the screen-to-body ratio. Secondly, a large gap is provided between the middle frame and the polymer layer 25, which can prevent the risk of the middle frame being deformed by the impact when the electronic device is dropped, thereby colliding with the protrusion 255 and damaging the display device 20c, thereby improving the competitiveness of the electronic device.

[0044] like Figure 11 and Figure 12As shown, the structure of the electronic device 100d provided in the fifth embodiment of the present application is similar to the structure of the electronic device 100 provided in the first embodiment, except that: the second colloid portion 253 in the fifth embodiment protrudes from the side surface 241 of the cover plate 24 close to the bending portion 220, and the first colloid portion 251 is connected to the side surface 241 of the cover plate 24 close to the bending portion 220 and the surface of the cover plate 24 facing the display screen main body 221; that is, the second colloid portion 253 of the polymer layer 25 is located on the outside of the side surface 241, and the width of the protrusion 255 is equal to the width of the second colloid portion 253. Specifically, the width of the second colloid portion 253 protruding from the side surface of the cover plate 24 close to the bending portion 220 is in the range of 0.03 mm to 0.1 mm, that is, the width of the protrusion 255 is in the range of 0.03 mm to 0.1 mm; the width of the black border 250 of the display device 20d is equal to the width of the first colloid portion 251. Since the second adhesive portion 253 is located outside the side surface 241 of the cover plate 24 in this embodiment, the width of the black border 250 of the display device 20d is only equal to the width of the first adhesive portion 251. The protrusion 255 is received in the avoidance groove 36 of the middle frame 30.

[0045] Compared with the prior art, in which the polymer layer of the display screen shrinks to the back of the cover plate and does not extend out of the side of the cover plate, the width of the black border of the display screen is at least equal to the width of the polymer layer on the outside of the outer arc surface of the bent portion of the display screen; the polymer layer 25 of the display device 20d of the present application is connected to the cover plate 24 after covering the bent portion 220, and the second colloid portion 253 protrudes from the side 241 of the cover plate 24, so that the width of the black border 250 of the display device 20d is only equal to the width of the first colloid portion 251; therefore, the width of the black border 250 of the display device 20d of the present application is significantly smaller than the width of the polymer layer 25, which can reduce the width of the black border 250 of the display device 20d, expand the display area of ​​the display device 20, increase the screen-to-body ratio, and enhance the competitiveness of the electronic device 100d.

[0046] like Figure 13As shown, the structure of the electronic device provided in the sixth embodiment of the present application is similar to the structure of the electronic device 100d provided in the fourth embodiment, except that: the first colloid portion 251 of the polymer layer 25 in the sixth embodiment is only connected to the surface of the cover plate 24 facing the display screen body 221, the second colloid portion 253 protrudes from the side surface 241 of the cover plate 24 to form a protrusion 255, and a third avoidance groove 2505 is provided between the second colloid portion 253 and the first colloid portion 251 on the side away from the bending portion 220 and the cover plate 24, so as to increase the gap between the middle frame and the protrusion 255 at the third avoidance groove 2505, which can prevent the middle frame of the electronic device from deforming and colliding with the polymer layer 25 when it falls and impacts, thereby damaging the display device 20e, thereby improving the reliability of the electronic device. That is, since the third avoidance groove 2505 is added between the outer peripheral wall of the middle frame and the protrusion 255, the gap between the outer peripheral wall and the protrusion 255 is increased. When the electronic device falls, the outer peripheral wall may be impacted and deformed toward the third avoidance groove 2505. Due to the large gap, the deformation of the outer peripheral wall will not hit the protrusion 255 and damage the display device 20e, thereby improving the reliability of the display device 20e.

[0047] The second colloid portion 253 of the polymer layer 25 in the display device 20e of this embodiment extends out of the side surface 241 of the cover plate 24, so that the width of the black border 250 of the display device 20e is only equal to the width of the first colloid portion 251. Therefore, the width of the black border 250 of the display device 20e of this application is significantly smaller than the width of the polymer layer 25, which can reduce the width of the black border 250 of the display device 20e, expand the display area of ​​the display device 20, and improve the screen-to-body ratio; secondly, there is a large gap between the middle frame and the polymer layer 25, which can avoid the risk of the middle frame being deformed by the impact when the electronic device falls and colliding with the protrusion 255 to damage the display device 20e, thereby improving the competitiveness of the electronic device.

[0048] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A display device, characterized in that: The display device includes: A display screen, the display screen comprising a bent portion provided at a side edge thereof; a cover plate, the cover plate covering the light emitting surface of the display screen; and A polymer layer covers the bent portion, the polymer layer is connected to the cover plate, and a side of the polymer layer facing away from the bent portion protrudes from a side surface of the cover plate close to the bent portion.

2. The display device according to claim 1, wherein The polymer layer includes a first colloid part and a second colloid part, the first colloid part is located on the outside of the bending part, the second colloid part is located on the side of the first colloid part away from the bending part, and at least a portion of the second colloid part protrudes from the side of the cover plate close to the bending part.

3. The display device according to claim 2, wherein: The width of the first colloid portion is in the range of 0.15 mm to 0.25 mm, and the width of the second colloid portion is in the range of 0.03 mm to 0.1 mm.

4. The display device according to claim 2, wherein: The second colloid part and at least part of the first colloid part away from the bending part protrude from the side of the cover plate close to the bending part, and the first colloid part is connected to the side of the cover plate and the surface facing the display screen.

5. The display device according to claim 4, wherein: The width of the polymer layer protruding from the side surface of the cover plate close to the bent portion is greater than 0.03 mm and less than 0.35 mm.

6. The display device according to claim 2, wherein: The polymer layer also includes a first connecting portion, which is located on a side of the first colloid portion facing away from the second colloid portion. The first connecting portion is connected to the back of the display screen, and a width of the first connecting portion is greater than the sum of the width of the first colloid portion and the width of the second colloid portion.

7. The display device according to claim 6, wherein: The polymer layer further includes a second connecting portion, which is located on a side of the first colloid portion away from the second colloid portion, and is connected to the bent portion, the cover plate, and the first connecting portion.

8. The display device according to claim 2, wherein: The second colloid part and at least part of the first colloid part protrude from the side of the cover plate close to the bending part on a side away from the bending part to form a protrusion, which is connected to the surface of the cover plate facing the display screen, and a first avoidance groove is provided between the protrusion and the cover plate.

9. The display device according to claim 2, wherein: The first colloid part and the second colloid part both protrude from a side surface of the cover plate close to the bent portion, and the side surface of the cover plate is tangent to an outer side surface of the bent portion.

10. The display device according to claim 9, wherein The width of the first colloid part and the second colloid part protruding from the side surface of the cover plate close to the bending portion ranges from 0.18 mm to 0.35 mm.

11. The display device according to claim 2, wherein: The first colloid part and the second colloid part protrude from the side surface of the cover plate to form a protruding part, and a second avoiding groove is provided between the protruding part and the cover plate.

12. The display device according to claim 2, wherein: The second colloid portion protrudes from the side surface of the cover plate close to the bending portion, and the first colloid portion is connected to the side surface of the cover plate close to the bending portion and the surface of the cover plate facing the display screen.

13. The display device according to claim 12, wherein: The width of the second colloid portion protruding from the side surface of the cover plate close to the bent portion is in a range of 0.03 mm to 0.1 mm.

14. The display device according to claim 12, wherein: A third avoidance groove is provided between the first colloid part, the second colloid part and the cover plate.

15. An electronic device, characterized in that: The electronic device includes a display device and a middle frame according to any one of claims 1 to 14, wherein the middle frame is provided with an inner cavity, the display device is accommodated in the inner cavity of the middle frame, and the polymer layer of the display device is connected to the inner surface of the middle frame by a connecting glue.

16. The electronic device according to claim 15, characterized in that An inner side surface of the polymer layer of the middle frame facing the display device is provided with a avoiding groove, and a portion of the polymer layer protruding from the side surface of the cover plate is accommodated in the avoiding groove.

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