CN114512622A

CN114512622A - Display device and electronic apparatus

Info

Publication number: CN114512622A
Application number: CN202011281003.9A
Authority: CN
Inventors: 贾玉虎
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2022-05-17
Also published as: WO2022100320A1

Abstract

The embodiment of the application provides a display device and electronic equipment. The display device includes a display area and a first non-display area. The display area comprises a straight part and a first bending part, the first bending part is connected to the edge of the straight part in a bending mode, the first bending part is arranged in a bending mode towards a first direction, and the first direction is different from the bending direction of the first bending part relative to the straight part; the first non-display area is arranged on the edge of the first bending part, a plurality of first unit sets which are spaced from each other are arranged in the first non-display area, each first unit set comprises one or more first units, each first unit is provided with a plurality of grooves which are spaced from each other, a second unit set is arranged between every two adjacent first unit sets, each second unit set comprises one or more second units, and the structures of the second units are different from those of the first units. The display device and the display method can avoid packaging failure caused by cracks and folds of the part, located in the corner area, of the display device of the full-screen electronic equipment.

Description

Display device and electronic apparatus

Technical Field

The present disclosure relates to display technologies, and particularly to a display device and an electronic apparatus.

Background

With the rapid development of display technology, the trend of electronic products to be beautiful, light and thin gradually appears, and the curved surface lamination of the OLED (organic light-Emitting Diode) flexible display screen is also rapidly developed. The technology for laminating the two bent sides of the OLED flexible display screen is mature day by day, and meanwhile, the four bent sides of the OLED flexible display screen is favored by panel manufacturers and mobile phone manufacturers. However, as the depth of the OLED flexible display screen entering the corner area of the cover plate increases, the stress of the OLED flexible display screen is more complicated. Because the tensile stress and the compressive stress which are applied to the part of the OLED flexible display screen which is positioned in the corner area can not be released, the conventional OLED flexible display screen is easy to crack and wrinkle in the corner area, so that the part of the film layer positioned in the corner area in the OLED flexible display screen is peeled off, and the OLED flexible display screen is subjected to packaging failure so that the function of the OLED flexible display screen is damaged due to water and oxygen invasion.

Disclosure of Invention

The embodiment of the application provides a display device and electronic equipment, which can avoid packaging failure caused by cracks and folds of a part, located in a corner area, of an OLED flexible display screen of the full-screen electronic equipment.

The embodiment of the application achieves the technical effects through the following technical scheme.

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

the display area comprises a straight part and a first bending part, the first bending part is connected to the edge of the straight part in a bending mode, the first bending part is arranged in a bending mode towards a first direction, and the first direction is different from the bending direction of the first bending part relative to the straight part; and

the first non-display area is arranged at the edge of the first bending part, the first non-display area is provided with a plurality of first unit sets which are spaced from each other, each first unit set comprises one or more first units, each first unit is provided with a plurality of grooves which are spaced from each other, a second unit set is arranged between every two adjacent first unit sets, each second unit set comprises one or more second units, and the structures of the second units are different from those of the first units.

The embodiment of the application also provides electronic equipment, the electronic equipment comprises a shell and a display device arranged on the shell, and the display device is the display device.

In the display device provided by the embodiment of the application, the display area comprises a straight portion and a first bending portion which is connected to the edge of the straight portion in a bending mode and is bent towards the first direction, a first non-display area on the edge of the first bending portion is provided with a plurality of first unit sets which are spaced from each other, each first unit set comprises one or more first units, a plurality of grooves which are spaced from each other are arranged in the first units to release stress, and the situation that the part, located in the corner area, of the display device is cracked and folded to cause packaging failure can be avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a display device in the electronic device shown in fig. 1.

Fig. 3 is a front view of the display device shown in fig. 2.

Fig. 4 is a first partial enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic diagram of a first structure of a first unit shown in fig. 4.

Fig. 6 is a schematic structural diagram of a second unit in fig. 4.

Fig. 7 is a second partial enlarged view of a portion a in fig. 3.

Fig. 8 is a schematic diagram of a second structure of a first unit shown in fig. 4.

Fig. 9 is a schematic diagram of a third structure of a first unit in fig. 4.

Fig. 10 is a schematic diagram of a fourth structure of a first unit in fig. 4.

Fig. 11 is a cross-sectional view of the first unit shown in fig. 10 taken along the P-P direction.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an AR (Augmented Reality) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic apparatus 100 may include a housing 10 and a display device 20. Wherein the display device 20 is provided on the housing 10. It is understood that the electronic device 100 may further include a cover, a main board, a battery, a camera module, a speaker, a sensor, and other components (none of which are shown). For the introduction of the cover plate, the main board, the battery, the camera module, the speaker, the sensor and other elements, reference may be made to the description of the above elements in the related art, and details are not repeated here.

The housing 10 may form an outer contour of the electronic device 100. Meanwhile, the case 10 may serve as a protective case for various internal elements of the electronic apparatus 100, preventing the various internal elements of the electronic apparatus 100 from being damaged due to collision, falling, etc. of the electronic apparatus 100. The housing 10 may be integrally formed. In the forming process of the housing 10, a microphone hole, a speaker hole, a receiver hole, an earphone hole, a USB interface hole, a rear camera hole, a fingerprint identification module mounting hole, and the like may be formed on the housing 10.

The housing 10 may be a metal housing such as a metal of magnesium alloy, stainless steel, etc. It should be noted that the material of the housing 10 in the embodiment of the present application is not limited to this, and other materials may be used. Such as: the housing 10 may be a plastic housing, the housing 10 may also be a ceramic housing, the housing 10 may further include a plastic part and a metal part, and the housing 10 may be a housing structure in which metal and plastic are matched with each other. Specifically, the metal part may be formed first, for example, by casting to form a magnesium alloy substrate, and then molding the plastic on the magnesium alloy substrate to form a plastic substrate, so as to form the complete housing structure. It should be noted that the material and process of the housing 10 are not limited to this, and a glass housing may also be used, and the specific material and the specific manufacturing process of the housing 10 are not limited in the embodiments of the present application.

Referring to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic structural diagram of a display device in the electronic apparatus shown in fig. 1, fig. 3 is a front view of the display device shown in fig. 2, and fig. 4 is a first partial enlarged view of a portion a in fig. 3. The display device 20 may include a display area 21 and a non-display area (not numbered) disposed at a periphery of the display area 21. The display area 21 may be provided with a display unit and a touch unit, and is used for displaying contents such as characters and images and receiving touch operations of a user; the non-display area may not be provided with a display unit and a touch unit, and is not used for displaying a picture and receiving touch operation of a user.

The display area 21 may include a flat portion 211, a first bending portion 212 and a second bending portion 213, wherein the first bending portion 212 and the second bending portion 213 are disposed at an edge of the flat portion 211, and the first bending portion 212 and the second bending portion 213 jointly surround a periphery of the flat portion 211.

The flat portion 211 is a planar plate-shaped structure, and the flat portion 211 may serve as a main display portion of the display device 20. The flat portion 211 may be a plate-shaped structure having corners, such as a rectangular structure or a rounded rectangular structure; the flat portion 211 may also be a plate-like structure without corners, such as a circular structure. The second bending portion 213 is a curved plate-shaped structure, the second bending portion 213 is connected to a side of the straight portion 211 in a bending manner, and the second bending portion 213 can be used as a sub-display portion of the display device 20. The first bending portion 212 is connected to a corner of the straight portion 211 and connected between two adjacent second bending portions 213, and the first bending portion 212 may serve as an auxiliary display portion of the display device 20. The first bent portion 212 is bent toward a first direction F1, and the first direction F1 is different from a direction in which the first bent portion 212 is bent with respect to the straight portion 211. Specifically, the first bending portion 212 may be a spherical structure, the first direction F1 is a tangential direction of the spherical surface, and the bending direction of the first bending portion 212 relative to the straight portion 211 is a radial direction of the spherical surface.

It should be noted that the number of the first bending portions 212 and the number of the second bending portions 213 are different according to the shape of the straight portion 211, wherein the number of the first bending portions 212 is consistent with the number of corners of the straight portion 211, and the number of the second bending portions 213 is consistent with the number of sides of the straight portion 211.

When the flat portion 211 has a rectangular or rounded rectangular structure, the flat portion 211 has four sides and four corners, and the display area 21 includes four second bending portions 213 respectively connected to the four sides of the flat portion 211 and four first bending portions 212 respectively connected to the four corners of the flat portion 211 and located between two adjacent second bending portions 213. When the flat portion 211 has a triangular or rounded triangle structure, the flat portion 211 has three sides and three corners, and the display area 21 includes three second bending portions 213 respectively connected to the three sides of the flat portion 211 and three first bending portions 212 respectively connected to the three corners of the flat portion 211 and respectively located between two adjacent second bending portions 213. When the flat portion 211 is circular, the flat portion 211 has zero sides and infinite corners, and the display area 21 includes infinite first bending portions 212 connected to the periphery of the flat portion 211 without including the second bending portions 213. The drawings of the embodiments of the present application take the straight portion 211 as a rounded rectangle structure as an example, but the embodiments of the present application do not limit the specific shape of the straight portion 211 and the specific number of the first bending portion 212 and the second bending portion 213.

The non-display area may include a first non-display area 22 disposed at an edge of the first bending part 212 and a second non-display area 23 disposed at an edge of the second bending part 213. It can be understood that the first non-display regions 22 are connected between two adjacent second non-display regions 23, the number of the first non-display regions 22 is consistent with the number of the first bending portions 212 and the number of corners of the straight portions 211, and the number of the second non-display regions 23 is consistent with the number of the second bending portions 213 and the number of sides of the straight portions 211.

The first non-display area 22 is provided with a plurality of first cell sets 221 spaced apart from each other, a second cell set 222 is disposed between two adjacent first cell sets 221, and the first cell sets 221 and the second cell sets 222 are disposed side by side along the first direction F1. A first set of cells 221 may include one or more first cells 2210, and a second set of cells 222 may include one or more second cells 2220. The size of the first cell 2210 is the same as that of the second cell 2220, but the structure of the first cell 2210 is different from that of the second cell 2220, the first cell 2210 being provided with a plurality of grooves 220 spaced apart from each other.

It should be noted that, with the rapid development of display technology, the trend of beauty, lightness and thinness of electronic products gradually appears, and the curved surface lamination of the OLED flexible display screen is also rapidly developed. The technology for laminating the two bent sides of the OLED flexible display screen is mature day by day, and meanwhile, the four bent sides of the OLED flexible display screen is favored by panel manufacturers and mobile phone manufacturers. However, four sides of the flexible OLED display are curved, and the corner is a technical difficulty.

As the depth of the OLED flexible display screen entering the corner area of the cover plate is increased, the stress of the OLED flexible display screen is more complicated. After corners of the OLED flexible display screen are attached, the OLED flexible display screen is positioned in the corner area, and the middle area is subjected to larger radial and tangential tensile stress, so that the maximum tensile stress is larger than the maximum tensile stress of the long side and the short side, and cracks are easily generated; the OLED flexible display screen is positioned in the corner area, and the edge area is subjected to larger tangential compressive stress, so that wrinkles are easily generated. The cracks and the wrinkles can cause the peeling of a part of the film layer of the OLED flexible display screen positioned in the corner area, so that the packaging failure of the OLED flexible display screen is caused, water and oxygen invade, and the function of the OLED flexible display screen is damaged.

Therefore, the non-display area of the part of the OLED flexible display screen, which is positioned in the corner area, is provided with the corresponding structure so as to release the tensile stress and the compressive stress applied to the part of the OLED flexible display screen, which is positioned in the corner area, and the phenomenon that the part of the OLED flexible display screen, which is positioned in the corner area, is cracked and folded so as to cause packaging failure can be effectively avoided.

Referring to fig. 5 and 6, fig. 5 is a first structural diagram of a first unit in fig. 4, and fig. 6 is a structural diagram of a second unit in fig. 4. It is assumed that the direction in which the first bent portion 212 is bent with respect to the straight portion 211 is the second direction F2. The first unit 2210 includes a first area 2211, a second area 2212, a third area 2213, and a fourth area 2214, which are sequentially adjacent along the second direction F2, wherein the fourth area 2214 is adjacent to the first bend 212. The second cell 2220 includes a fifth area 2225, a sixth area 2226, and a seventh area 2227 that are adjacent in sequence along the second direction F2, where the seventh area 2227 is adjacent to the first bent portion 212.

The first area 2211 is used to provide a first encapsulation structure and a first cutting guarantee line, the fifth area 2225 is used to provide a second encapsulation structure and a second cutting guarantee line, and the length of the first area 2211 in the second direction F2 is less than the length of the fifth area 2225 in the second direction F2. The second region 2212 is used to provide the trench 220. The third regions 2213 are for providing a first cathode, the sixth regions 2226 are for providing a second cathode, and the length of the third regions 2213 in the second direction F2 is less than the length of the sixth regions 2226 in the second direction F2. The fourth area 2214 is used for disposing driving signal lines, the seventh area 2227 is used for disposing driving units, the driving signal lines of the fourth area 2214 are electrically connected to the driving units of the seventh area 2227, and the length of the fourth area 2214 along the second direction F2 is smaller than the length of the seventh area 2227 along the second direction F2.

It will be appreciated that in order to make the second area 2212 large enough, the grooves 220 are provided: the first area 2211 in the first unit 2210 for setting the package structure and the cutting guarantee line is reduced compared to the fifth area 2225 in the second unit 2220 for setting the package structure and the cutting guarantee line; the third region 2213 for disposing a cathode in the first unit 2210 is reduced in comparison with the sixth region 2226 for disposing a cathode in the second unit 2220; compared to the seventh area 2227 for configuring the driving units in the second unit 2220, the fourth area 2214 for configuring the driving units in the first unit 2210 is not only reduced, but also driving units are not configured directly, but driving signal lines are configured and electrically connected to the driving units in the seventh area 2227 in the second unit 2220.

Referring to fig. 7, fig. 7 is a second partial enlarged view of a portion a in fig. 3. The first non-display area 22 further includes a wiring area 223, a portion of the wiring area 223 is disposed between the fourth area 2214 and the first bending portion 212, and another portion of the wiring area 223 is disposed between the seventh area 2227 and the first bending portion 212. By further reducing the fourth area 2214 for setting the driving signal line in the first cell 2210 and the seventh area 2227 for setting the driving unit in the second cell 2220, the wiring area 223 is left between the first cell set 221 and the second cell set 222 and the first bending portion 212, which can be used for setting the conductive line connecting the display area 21 and the non-display area.

Please continue to refer to fig. 5. The second area 2212 has a first edge (not numbered) and a second edge (not numbered) opposite to each other along the first direction F1. The trench 220 includes a first sub-trench 2201, a second sub-trench 2202 and a third sub-trench 2203, and the first sub-trench 2201, the second sub-trench 2202 and the third sub-trench 2203 are all wave-shaped long-strip structures. The first sub-groove 2201 is arranged between the first edge and the second edge, the groove wall of the second sub-groove 2202 is connected with the first edge, the groove wall of the third sub-groove 2203 is connected with the second edge, the second sub-groove 2202 and the third sub-groove 2203 are oppositely arranged along the first direction F1, and the first sub-groove 2201, the second sub-groove 2202 and the third sub-groove 2203 are partially oppositely arranged along the second direction F2.

It should be noted that the first sub-trench 2201, the second sub-trench 2202 and the third sub-trench 2203 may also be all linear long structures, as shown in fig. 8, and fig. 8 is a second structural diagram of one first unit in fig. 4. The first sub-trench 2201, the second sub-trench 2202 and the third sub-trench 2203 can also be different shapes, as shown in fig. 9, and fig. 9 is a third structural diagram of one first unit in fig. 4. The first sub-groove 2201 is an oval-shaped long-strip structure, and the second sub-groove 2202 and the third sub-groove 2203 are linear long-strip structures.

Referring to fig. 10, fig. 10 is a diagram illustrating a fourth structure of a first unit shown in fig. 4. The trench 220 may also include only the first sub-trench 2201 and the second sub-trench 2202. Wherein, the groove wall of the first sub-groove 2201 is connected with the first edge, the groove wall of the second sub-groove 2202 is connected with the second edge, and the first sub-groove 2201 and the second sub-groove 2202 are partially oppositely arranged along the second direction F2. The embodiment of the present application does not limit the specific structure and the specific shape of the trench 220.

The structure of the groove 220 will be described below from the viewpoint of the laminated structure of the display device 20.

Referring to fig. 11, fig. 11 is a cross-sectional view of the first unit shown in fig. 10 taken along the direction P-P. The display device 20 has a display surface 201 and a non-display surface 202 arranged in an opposite manner. The display surface 201 is a surface of the display device 20 for performing human-computer interaction with a user, is located outside the electronic device 100, and is visible to the user in a using process; the non-display surface 202 is a surface of the display device 20 that is not used for human-computer interaction with a user, is located inside the electronic apparatus 100, and is not visible to the user during use. The display device 20 includes a polyimide film 203, a plurality of inorganic layers 204, and a thin film encapsulation layer 205, which are stacked in a direction from the non-display surface 202 to the display surface 201. A portion of one inorganic layer 204 located at the first cell 2210 is provided with a plurality of first through holes 2040 spaced apart from each other, a portion of the thin film encapsulation layer 205 located at the first cell 2210 is provided with a plurality of second through holes 2050 spaced apart from each other, each of the first through holes 2040 communicates with one of the first through holes 2040 in the adjacent inorganic layer 204, and each of the second through holes 2050 communicates with one of the first through holes 2050 in the adjacent inorganic layer 204, so that there are a plurality of through holes penetrating the plurality of inorganic layers 204 and the thin film encapsulation layer 205 spaced apart from each other in the portion of the display device 20 located at the first cell 2210 to form the trench 220. The width of the groove 220 gradually decreases from the non-display surface 202 to the display surface 201, so that the cross section of the groove 220 along the P-P direction is trapezoidal. It is understood that the cross-section of the groove 220 in the P-P direction may also be triangular. The embodiment of the present application does not limit the specific shape of the cross section of the groove 220.

The display device and the electronic device provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display device, comprising:

2. The display device according to claim 1, wherein the first unit includes a first region, a second region, a third region, and a fourth region, which are sequentially adjacent to each other in a direction in which the first bent portion is bent with respect to the straight portion, the fourth region being adjacent to the first bent portion, the first region being used for disposing the first encapsulation structure and the first cutting guarantee line, the second region being used for disposing the groove, the third region being used for disposing the first cathode, and the fourth region being used for disposing the driving signal line.

3. The display device according to claim 2, wherein the second unit includes a fifth region, a sixth region, and a seventh region, which are sequentially adjacent to each other along a direction in which the first bending portion is bent with respect to the straight portion, the seventh region being adjacent to the first bending portion, the fifth region being used for disposing the second package structure and the second dicing guarantee line, the sixth region being used for disposing the second cathode, the seventh region being used for disposing the driving unit, and the driving unit being electrically connected to the driving signal line.

4. The display device according to claim 3, wherein the first unit has a size same as that of the second unit, and wherein a length of the first region is smaller than that of the fifth region, a length of the third region is smaller than that of the sixth region, and a length of the fourth region is smaller than that of the seventh region in a direction in which the first bent portion is bent with respect to the straight portion.

5. The display device according to claim 3, wherein the first non-display region further includes a wiring region, a portion of the wiring region is disposed between the fourth region and the first bending portion, another portion of the wiring region is disposed between the seventh region and the first bending portion, and the wiring region is used for wiring a conductive wire connecting the display region and the first non-display region.

6. The display device according to claim 2, wherein the second region has a first side and a second side opposite to each other, the first side and the second side are parallel to a 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 spaced apart from each other, the first sub-groove is disposed between the first side and the second side, a groove wall of the second sub-groove is connected to the first side, a groove wall of the third sub-groove is connected to the second side, and the second sub-groove and the third sub-groove are opposite to each other in a direction in which the second side faces the third side.

7. The display device according to any one of claims 1 to 6, wherein the display device comprises a display surface for displaying and a non-display surface opposite to the display surface, the first non-display region comprises a polyimide film layer, a plurality of inorganic layers and a film encapsulation layer, the polyimide film layer, the inorganic layers and the film encapsulation layer are sequentially stacked from the non-display surface to the display surface, one of the inorganic layers is provided with a plurality of first through holes spaced from each other, each of the first through holes is communicated with one of the first through holes in the adjacent inorganic layers, the film encapsulation layer is provided with a plurality of second through holes spaced from each other, each of the second through holes is communicated with one of the first through holes in the adjacent inorganic layers to form the plurality of grooves spaced from each other.

8. The display device according to any one of claims 1 to 6, wherein a plurality of the grooves are arranged at intervals along a direction in which the first bending portion is bent with respect to the straight portion, a plurality of the first cell sets are arranged at intervals along the first direction, and a plurality of the second cell sets are arranged at intervals along the first direction; when one of the first cell sets includes a plurality of the first cells, the plurality of the first cells are arranged side by side in the first direction; when one of the second cell sets includes a plurality of the second cells, the plurality of the second cells are arranged side by side in the first direction.

9. The display device according to any one of claims 1 to 6, wherein the flat portion is polygonal, the display region further comprises a plurality of second bending portions, the number of the second bending portions is the same as the number of the sides of the flat portion, one second bending portion is connected to one side of the flat portion, and one first bending portion is disposed between two adjacent second bending portions.

10. An electronic apparatus comprising a housing and a display device provided on the housing, wherein the display device is the display device according to any one of claims 1 to 9.