Display device and electronic equipment

Abstract

The embodiments of the present application provide a display device and an electronic device. The display device includes a display area and a first non-display area. The display area includes a straight portion and a first bent portion, the first bent portion is bent and connected to the edge of the straight portion, and the first bent portion is bent in a first direction, and the first direction is different from the direction in which the first bent portion is bent relative to the straight portion; the first non-display area is arranged at the edge of the first bent portion, and the first non-display area is provided with a plurality of mutually spaced first unit sets, the first unit set includes one or more first units, the first unit is provided with a plurality of mutually spaced grooves, and a second unit set is arranged between two adjacent first unit sets, the second unit set includes one or more second units, and the structure of the second unit is different from that of the first unit. The embodiments of the present application can prevent cracks and wrinkles from occurring in the corner area of ​​the display device of a full-screen electronic device, thereby causing packaging failure.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and an electronic device. Background Art

[0002] With the rapid development of display technology, the trend of electronic products becoming more beautiful and thinner is gradually emerging, and the curved surface bonding of OLED (Organic Light-Emitting Diode) flexible display screens has also developed rapidly. While the process of curved bonding on two sides of OLED flexible display screens is becoming more mature, the curved bonding on four sides of OLED flexible display screens is also becoming increasingly popular among panel manufacturers and mobile phone manufacturers. However, as the depth of the OLED flexible display screen entering the corner area of ​​the cover increases, the force on the OLED flexible display screen becomes more complicated. Since the tensile stress and compressive stress on the part of the OLED flexible display screen located in the corner area cannot be released, conventional OLED flexible display screens are prone to cracks and wrinkles in the corner area, resulting in peeling of part of the film layer in the corner area of ​​the OLED flexible display screen, which leads to failure of the OLED flexible display screen packaging and water and oxygen intrusion, resulting in damage to the function of the OLED flexible display screen. Summary of the Invention

[0003] The embodiments of the present application provide a display device and an electronic device that can prevent cracks and wrinkles from occurring in the corner areas of an OLED flexible display screen of a full-screen electronic device, thereby preventing packaging failure.

[0004] The embodiments of the present application achieve the above technical effects through the following technical solutions.

[0005] An embodiment of the present application provides a display device, including:

[0006] a display area, the display area including a straight portion and a first bent portion, the first bent portion being bent and connected to an edge of the straight portion, and the first bent portion being bent in a first direction, the first direction being different from a direction in which the first bent portion is bent relative to the straight portion; and

[0007] A first non-display area, wherein the first non-display area is arranged at the edge of the first bending portion, wherein the first non-display area is provided with a plurality of mutually spaced first unit sets, wherein the first unit sets include one or more first units, and the first units are provided with a plurality of mutually spaced grooves, and a second unit set is arranged between two adjacent first unit sets, wherein the second unit set includes one or more second units, and the structure of the second unit is different from that of the first unit.

[0008] An embodiment of the present application further provides an electronic device, comprising a housing and a display device disposed on the housing, wherein the display device is the display device described above.

[0009] In the display device provided in the embodiment of the present application, the display area includes a straight portion and a first bent portion that is bent and connected to the edge of the straight portion and bent in a first direction. The first non-display area at the edge of the first bent portion is provided with a plurality of mutually spaced first unit sets, each first unit set including one or more first units. By providing a plurality of mutually spaced grooves in the first unit to release stress, cracks and wrinkles in the corner area of ​​the display device can be avoided, which may cause packaging failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0011] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0012] Figure 2 for Figure 1 A schematic structural diagram of a display device in an electronic device is shown.

[0013] Figure 3 for Figure 2 A front view of the display device is shown.

[0014] Figure 4 for Figure 3 The first partial enlarged view of part A.

[0015] Figure 5 for Figure 4 Schematic diagram of the first structure of the first unit.

[0016] Figure 6 for Figure 4 Schematic diagram of the structure of the second unit.

[0017] Figure 7 for Figure 3 The second partial enlarged view of part A.

[0018] Figure 8 for Figure 4 Schematic diagram of the second structure of the first unit.

[0019] Figure 9 for Figure 4 Schematic diagram of the third structure of the first unit.

[0020] Figure 10 for Figure 4Schematic diagram of the fourth structure of the first unit.

[0021] Figure 11 for Figure 10 A cross-sectional view of the first unit along the PP direction is shown. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] An embodiment of the present application provides an electronic device. The electronic device may be a device such as a smartphone, a tablet computer, or a gaming device, an AR (Augmented Reality) device, an automotive device, a data storage device, an audio player, a video player, a laptop computer, a desktop computing device, or the like.

[0024] See also Figure 1 , Figure 1 Schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 100 may include a housing 10 and a display device 20. The display device 20 is disposed on the housing 10. It is understood that the electronic device 100 may also include components such as a cover plate, a motherboard, a battery, a camera module, a speaker, and a sensor (all not shown in the figure). For an introduction to components such as the cover plate, motherboard, battery, camera module, speaker, and sensor, please refer to the description of the above components in the relevant technology, which will not be repeated here.

[0025] The housing 10 forms the outer contour of the electronic device 100. It also serves as a protective shell for the various internal components of the electronic device 100, preventing damage to the components due to collisions, falls, and the like. The housing 10 can be integrally molded. During the molding process, structures such as a microphone hole, a speaker hole, a receiver hole, a headphone jack, a USB port, a rear camera hole, and a fingerprint recognition module mounting hole can be formed on the housing 10.

[0026] The shell 10 can be a metal shell, such as magnesium alloy, stainless steel and other metals. It should be noted that the material of the shell 10 in the embodiment of the present application is not limited to this, and other materials can also be used. For example: the shell 10 can be a plastic shell, the shell 10 can also be a ceramic shell, the shell 10 can also include a plastic part and a metal part, and the shell 10 can be a shell structure in which metal and plastic cooperate with each other. Specifically, the metal part can be formed first, such as forming a magnesium alloy substrate by casting, and then injection molding plastic on the magnesium alloy substrate to form a plastic substrate to form a complete shell structure. It should be noted that the material and process of the shell 10 are not limited to this, and a glass shell can also be used. The embodiment of the present application does not limit the specific material and specific manufacturing process of the shell 10.

[0027] See also Figure 2 、 Figure 3 and Figure 4 , Figure 2 for Figure 1 A schematic structural diagram of a display device in an electronic device shown in FIG. Figure 3 for Figure 2 A front view of the display device shown, Figure 4 for Figure 3 A first partial enlarged view of section A in the figure. The display device 20 may include a display area 21 and a non-display area (not numbered in the figure) disposed around the periphery of the display area 21. The display area 21 may be provided with a display unit and a touch unit for displaying content such as text and images and accepting user touch operations. The non-display area may not be provided with a display unit or a touch unit and is not used for displaying images or accepting user touch operations.

[0028] The display area 21 may include a straight portion 211 , a first bent portion 212 and a second bent portion 213 , wherein the first bent portion 212 and the second bent portion 213 are both arranged at the edge of the straight portion 211 , and the first bent portion 212 and the second bent portion 213 are jointly arranged around the periphery of the straight portion 211 .

[0029] The straight portion 211 is a flat plate-like structure, and the straight portion 211 can serve as the main display portion of the display device 20. The straight portion 211 can be a plate-like structure with edges and corners, such as a rectangular structure or a rounded rectangular structure; the straight portion 211 can also be a plate-like structure without edges and corners, such as a circular structure. The second bent portion 213 is a curved plate-like structure, and the second bent portion 213 is bent and connected to the side of the straight portion 211. The second bent portion 213 can serve as the auxiliary display portion of the display device 20. The first bent portion 212 is bent and connected to the corner of the straight portion 211 and is connected between two adjacent second bent portions 213. The first bent portion 212 can serve as the auxiliary display portion of the display device 20. The first bent portion 212 is bent in a first direction F1, and the first direction F1 is different from the direction in which the first bent portion 212 is bent relative to the straight portion 211. Specifically, the first bent portion 212 may be a spherical structure, the first direction F1 is the tangential direction of the sphere, and the direction in which the first bent portion 212 bends relative to the straight portion 211 is the radial direction of the sphere.

[0030] It should be noted that the number of first bending portions 212 and second bending portions 213 varies with the shape of the straight portion 211 , wherein the number of first bending portions 212 is consistent with the number of corners of the straight portion 211 , and the number of second bending portions 213 is consistent with the number of sides of the straight portion 211 .

[0031] When the straight portion 211 is a rectangular or rounded rectangular structure, the straight portion 211 has four sides and four corners, and the display area 21 includes four second bent portions 213 that are respectively bent and connected to the four sides of the straight portion 211, and four first bent portions 212 that are respectively bent and connected to the four corners of the straight portion 211 and located between two adjacent second bent portions 213. When the straight portion 211 is a triangular or rounded triangular structure, the straight portion 211 has three sides and three corners, and the display area 21 includes three second bent portions 213 that are respectively bent and connected to the three sides of the straight portion 211, and three first bent portions 212 that are respectively bent and connected to the three corners of the straight portion 211 and located between two adjacent second bent portions 213. When the straight portion 211 is circular, it has zero sides and countless corners, and the display area 21 includes countless first bent portions 212 bent and connected to the periphery of the straight portion 211, but does not include second bent portions 213. The drawings of the embodiments of this application use a straight portion 211 having a rounded rectangular structure as an example, but the embodiments of this application do not limit the specific shape of the straight portion 211 or the specific number of first bent portions 212 and second bent portions 213.

[0032] The non-display area may include a first non-display area 22 disposed at the edge of the first bent portion 212 and a second non-display area 23 disposed at the edge of the second bent portion 213. It is understood that the first non-display area 22 is connected between two adjacent second non-display areas 23, and the number of first non-display areas 22 is consistent with the number of first bent portions 212 and the number of corners of the straight portion 211, and the number of second non-display areas 23 is consistent with the number of second bent portions 213 and the number of sides of the straight portion 211.

[0033] The first non-display area 22 is provided with a plurality of mutually spaced first unit sets 221. A second unit set 222 is provided between two adjacent first unit sets 221. The first unit sets 221 and the second unit sets 222 are arranged side by side along the first direction F1. A first unit set 221 may include one or more first units 2210, and a second unit set 222 may include one or more second units 2220. The dimensions of the first unit 2210 and the second unit 2220 are the same, but the structure of the first unit 2210 and the second unit 2220 is different. The first unit 2210 is provided with a plurality of mutually spaced grooves 220.

[0034] It's important to note that with the rapid development of display technology, the trend toward more aesthetically pleasing and thinner electronic products is gradually emerging, and the process of curved OLED flexible display lamination has also rapidly developed. While the process of two-sided curved OLED flexible display lamination is maturing, four-sided curved OLED flexible display lamination is also gaining favor among panel and mobile phone manufacturers. However, there is a technical difficulty in four-sided curved OLED flexible display lamination: corner lamination.

[0035] As the OLED flexible display screen penetrates deeper into the corner area of ​​the cover plate, the stresses on the OLED flexible display screen become more complex. After the corners of the OLED flexible display screen are bonded, the middle area of ​​the OLED flexible display screen located in the corner area is subjected to greater radial and tangential tensile stresses, resulting in a maximum tensile stress greater than the maximum tensile stress of the long and short sides, which is prone to cracking. The edge area of ​​the OLED flexible display screen located in the corner area is subjected to greater tangential compressive stress, which is prone to wrinkling. Cracks and wrinkles can cause the film layer of the OLED flexible display screen located in the corner area to peel off, resulting in failure of the OLED flexible display screen encapsulation and water and oxygen intrusion, which in turn damages the function of the OLED flexible display screen.

[0036] Therefore, a corresponding structure is set in the non-display area of ​​the part of the OLED flexible display located in the corner area to release the tensile stress and compressive stress of the part of the OLED flexible display located in the corner area, which can effectively prevent the part of the OLED flexible display located in the corner area from cracking and wrinkling, resulting in packaging failure.

[0037] See also Figure 5 and Figure 6 , Figure 5 for Figure 4 A schematic diagram of the first structure of the first unit in the Figure 6 for Figure 4 Schematic diagram of the structure of a second unit in FIG. Assume that the direction in which the first bent portion 212 bends relative to the straight portion 211 is the second direction F2. The first unit 2210 includes a first region 2211, a second region 2212, a third region 2213, and a fourth region 2214, which are sequentially adjacent along the second direction F2. The fourth region 2214 is adjacent to the first bent portion 212. The second unit 2220 includes a fifth region 2225, a sixth region 2226, and a seventh region 2227, which are sequentially adjacent along the second direction F2. The seventh region 2227 is adjacent to the first bent portion 212.

[0038] The first region 2211 is used to provide a first packaging structure and a first cutting assurance line. The fifth region 2225 is used to provide a second packaging structure and a second cutting assurance line. The length of the first region 2211 along the second direction F2 is shorter than the length of the fifth region 2225 along the second direction F2. The second region 2212 is used to provide a groove 220. The third region 2213 is used to provide a first cathode. The sixth region 2226 is used to provide a second cathode. The length of the third region 2213 along the second direction F2 is shorter than the length of the sixth region 2226 along the second direction F2. The fourth region 2214 is used to provide a driving signal line. The seventh region 2227 is used to provide a driving unit. The driving signal lines in the fourth region 2214 are electrically connected to the driving units in the seventh region 2227. The length of the fourth region 2214 along the second direction F2 is shorter than the length of the seventh region 2227 along the second direction F2.

[0039] It can be understood that in order to free up a large enough second area 2212 for setting the groove 220: compared with the fifth area 2225 in the second unit 2220 for setting the packaging structure and the cutting assurance line, the first area 2211 in the first unit 2210 for setting the packaging structure and the cutting assurance line is reduced; compared with the sixth area 2226 in the second unit 2220 for setting the cathode, the third area 2213 in the first unit 2210 for setting the cathode is reduced; compared with the seventh area 2227 in the second unit 2220 for setting the driving unit, not only the fourth area 2214 in the first unit 2210 for setting the driving unit is reduced, but the driving unit is not directly set but a driving signal line is set and electrically connected to the driving unit in the seventh area 2227 in the second unit 2220.

[0040] See also Figure 7 , Figure 7 for Figure 3A second partial enlarged view of section A in the middle. The first non-display area 22 also includes a wiring area 223, a portion of which is disposed between the fourth area 2214 and the first bend 212, and another portion of which is disposed between the seventh area 2227 and the first bend 212. By further reducing the fourth area 2214 for arranging drive signal lines in the first unit 2210 and the seventh area 2227 for arranging drive units in the second unit 2220, the wiring area 223 is freed between the first unit assembly 221 and the second unit assembly 222 and the first bend 212, allowing for the arrangement of wires connecting the display area 21 and the non-display area.

[0041] Please continue reading Figure 5 The second area 2212 has a first side (not numbered in the figure) and a second side (not numbered in the figure) arranged opposite to each other along the first direction F1. The groove 220 includes a first sub-groove 2201, a second sub-groove 2202 and a third sub-groove 2203. The first sub-groove 2201, the second sub-groove 2202 and the third sub-groove 2203 are all wavy strip structures. Among them, the first sub-groove 2201 is arranged between the first side and the second side, the groove wall of the second sub-groove 2202 is connected to the first side, the groove wall of the third sub-groove 2203 is connected to the second side, the second sub-groove 2202 and the third sub-groove 2203 are arranged opposite to each other along the first direction F1, and the first sub-groove 2201 and the second sub-groove 2202 and the third sub-groove 2203 are arranged opposite to each other along the second direction F2.

[0042] It should be noted that the first sub-groove 2201, the second sub-groove 2202 and the third sub-groove 2203 may also all be straight strip structures, such as Figure 8 As shown, Figure 8 for Figure 4 The first sub-groove 2201, the second sub-groove 2202 and the third sub-groove 2203 can also be of different shapes, such as Figure 9 As shown, Figure 9 for Figure 4 Schematic diagram of the third structure of a first unit in FIG. The first sub-groove 2201 is an elliptical strip structure, and the second sub-groove 2202 and the third sub-groove 2203 are linear strip structures.

[0043] See also Figure 10 , Figure 10 for Figure 4Schematic diagram of a fourth structure of a first unit in the embodiment. The groove 220 may also include only a first sub-groove 2201 and a second sub-groove 2202. The groove wall of the first sub-groove 2201 is connected to the first side, the groove wall of the second sub-groove 2202 is connected to the second side, and the first sub-groove 2201 and the second sub-groove 2202 are partially opposite each other along the second direction F2. The specific structure and shape of the groove 220 are not limited in this embodiment of the present application.

[0044] The structure of the groove 220 will be described below from the perspective of the stacked structure of the display device 20 .

[0045] See also Figure 11 , Figure 11 for Figure 10 A cross-sectional view of the first unit along the PP direction is shown. The display device 20 has a display surface 201 and a non-display surface 202 disposed opposite each other. The display surface 201 is the side of the display device 20 used for user interaction, located outside the electronic device 100 and visible to the user during use. The non-display surface 202 is the side of the display device 20 not used for user interaction, located inside the electronic device 100 and invisible to the user during use. The display device 20 includes a polyimide film 203, multiple inorganic layers 204, and a thin film encapsulation layer 205, stacked from the non-display surface 202 toward the display surface 201. The portion of an inorganic layer 204 located in the first unit 2210 is provided with a plurality of mutually spaced first through holes 2040, and the portion of the thin-film encapsulation layer 205 located in the first unit 2210 is provided with a plurality of mutually spaced second through holes 2050. Each first through hole 2040 communicates with a first through hole 2040 in an adjacent inorganic layer 204, and each second through hole 2050 communicates with a first through hole 2050 in an adjacent inorganic layer 204. As a result, the portion of the display device 20 located in the first unit 2210 has a plurality of mutually spaced through holes penetrating the plurality of inorganic layers 204 and the thin-film encapsulation layer 205, forming a groove 220. The width of the groove 220 gradually decreases from the non-display surface 202 to the display surface 201, such that the cross-section of the groove 220 along the PP direction is trapezoidal. It is understood that the cross-section of the groove 220 along the PP direction may also be triangular. The present embodiment of the application does not limit the specific shape of the cross-section of the groove 220.

[0046] The display device and electronic device provided by the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the present application. At the same time, those skilled in the art may vary in the specific implementation methods and application scope based on the concepts of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A display device, characterized in that: include: A display area, the display area comprising a straight portion and a first bent portion, the first bent portion being bent and connected to an edge of the straight portion, and the first bent portion being bent in a first direction, the first direction being different from a direction in which the first bent portion is bent relative to the straight portion; and A first non-display area, wherein the first non-display area is arranged at the edge of the first bending portion, wherein the first non-display area is provided with a plurality of mutually spaced first unit sets, wherein the first unit set includes one or more first units, wherein the first unit is provided with a plurality of mutually spaced grooves, and a second unit set is arranged between two adjacent first unit sets, wherein the second unit set includes one or more second units, and the structure of the second unit is different from that of the first unit.

2. The display device according to claim 1, characterized in that The first unit includes a first area, a second area, a third area and a fourth area which are adjacent to each other in sequence along the direction in which the first bending portion is bent relative to the straight portion, the fourth area is adjacent to the first bending portion, the first area is used to set a first packaging structure and a first cutting guarantee line, the second area is used to set the groove, the third area is used to set a first cathode, and the fourth area is used to set a driving signal line.

3. The display device according to claim 2, characterized in that: The second unit includes a fifth zone, a sixth zone and a seventh zone which are adjacent to each other in sequence along the direction in which the first bending portion is bent relative to the straight portion, the seventh zone is adjacent to the first bending portion, the fifth zone is used to set a second packaging structure and a second cutting assurance line, the sixth zone is used to set a second cathode, and the seventh zone is used to set a driving unit, and the driving unit is electrically connected to the driving signal line.

4. The display device according to claim 3, characterized in that: The size of the first unit is the same as that of the second unit. In the direction in which the first bending portion is bent relative to the straight portion, the length of the first zone is smaller than the length of the fifth zone, the length of the third zone is smaller than the length of the sixth zone, and the length of the fourth zone is smaller than the length of the seventh zone.

5. The display device according to claim 3, characterized in that: The first non-display area also includes a wiring area, a portion of which is arranged between the fourth area and the first bending portion, and another portion of which is arranged between the seventh area and the first bending portion, and the wiring area is used to lay out wires connecting the display area and the first non-display area.

6. The display device according to claim 2, characterized in that: The second zone has a first side and a second side that are arranged opposite to each other, the first side and the second side are parallel to the direction in which the first bending portion is bent relative to the straight portion, the groove includes a first sub-groove, a second sub-groove and a third sub-groove that are spaced apart from each other, the first sub-groove is arranged between the first side and the second side, the groove wall of the second sub-groove is connected to the first side, the groove wall of the third sub-groove is connected to the second side, and the second sub-groove and the third sub-groove are arranged opposite to each other in the direction from the second side to the first side.

7. The display device according to any one of claims 1 to 6, characterized in that: The display device includes a display surface for displaying and a non-display surface opposite to the display surface, the first non-display area includes a polyimide film layer, a plurality of inorganic layers and a thin film encapsulation layer stacked in sequence from the non-display surface to the display surface, one of the inorganic layers is provided with a plurality of first through holes spaced apart from each other, each of the first through holes is connected to one of the first through holes in an adjacent inorganic layer, the thin film encapsulation layer is provided with a plurality of second through holes spaced apart from each other, each of the second through holes is connected to one of the first through holes in an adjacent inorganic layer to form the plurality of grooves spaced apart from each other.

8. The display device according to any one of claims 1 to 6, characterized in that: A plurality of the grooves are arranged at intervals along the direction in which the first bending portion is bent relative to the straight portion, a plurality of the first unit sets are arranged at intervals along the first direction, and a plurality of the second unit sets are arranged at intervals along the first direction; when a first unit set includes a plurality of the first units, the plurality of the first units are arranged side by side along the first direction; when a second unit set includes a plurality of the second units, the plurality of the second units are arranged side by side along the first direction.

9. The display device according to any one of claims 1 to 6, characterized in that: The straight portion is a polygon, and the display area also includes a plurality of second bending portions, the number of the second bending portions is the same as the number of sides of the straight portion, one of the second bending portions is bent and connected to a side of the straight portion, and one of the first bending portions is arranged between two adjacent second bending portions.

10. An electronic device, characterized in that: It comprises a shell and a display device arranged on the shell, and the display device is the display device according to any one of claims 1 to 9.

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