CN113223410A - Display panel and electronic device - Google Patents
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- CN113223410A CN113223410A CN202110460260.7A CN202110460260A CN113223410A CN 113223410 A CN113223410 A CN 113223410A CN 202110460260 A CN202110460260 A CN 202110460260A CN 113223410 A CN113223410 A CN 113223410A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The application provides a display panel and an electronic device. The display panel in the present application includes a display region and a terminal region. The terminal area comprises a bending sub-area, a first wiring sub-area and a second wiring sub-area. The terminal area of the display panel is designed in shape, and the length of the bending sub-area connecting the first wiring sub-area and the second wiring sub-area is reduced, so that the area of the bending sub-area is reduced. Thereby reducing the bending stiffness of the bending subarea and realizing bending under smaller pressure and stress. Meanwhile, the length of the first wiring sub-area and the length of the second wiring sub-area are greater than the length of the bending sub-area, so that bending stress can be released in the bending sub-area. Thereby effectively improving the condition that cracks are generated in the bending sub-area and reducing the probability of displaying bright lines.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and electronic equipment.
Background
In the modern communication industry, the market demand of products such as mobile phones, televisions, flat panels, notebooks, digital cameras and the like is increasing, and various electronic devices are developing towards full screens.
In flexible full-screen display module manufacturing, the side four-sided display design is becoming the next generation trend. At present, in the development of a terminal area Bending (Bending) technology of a curved surface product, the terminal area is subjected to higher pressure when being bent than a plane due to the fact that the curved surface is required to be bent, and the terminal area wiring of a panel is concentrated in stress and prone to generating cracks (Crack) to cause bright lines of the product.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a display panel and an electronic device, which are used for avoiding the phenomenon that cracks appear in the terminal area of the display panel in the bending process.
The embodiment of the application provides one kind, including display area and terminal area, the terminal area is located at least one side of display area, the terminal area includes:
the bending sub-area is provided with a first edge and a second edge which are oppositely arranged;
the first wiring sub-area is connected with the first edge;
a second routing sub-area connected with the second edge;
in a direction parallel to the first edge, the extension length of the first routing sub-area and the extension length of the second routing sub-area are greater than the extension length of the bending sub-area.
Optionally, in some embodiments of the present application, the display panel further includes a first connection corner, a second connection corner, a third connection corner, and a fourth connection corner;
the first wiring sub-area and the bending sub-area are connected through the first connecting corner and the second connecting corner; the bending sub-area and the second routing sub-area are connected through the third connecting corner and the fourth connecting corner;
the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner are curved corners.
Optionally, in some embodiments of the present application, the display panel further includes a first connection corner, a second connection corner, a third connection corner, and a fourth connection corner;
the first wiring sub-area and the bending sub-area are connected through the first connecting corner and the second connecting corner; the bending sub-area and the second routing sub-area are connected through the third connecting corner and the fourth connecting corner;
the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner are right angles.
Optionally, in some embodiments of the present application, any one or more of the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner has at least one step.
Optionally, in some embodiments of the present application, the step is axisymmetrical along a perpendicular to the midpoint of the first edge.
Optionally, in some embodiments of the present application, the first trace sub-region and the second trace sub-region are axisymmetric along a central axis of the bending sub-region parallel to the first edge.
Optionally, in some embodiments of the present application, the display area includes a planar display sub-area and a curved surface display sub-area, the curved surface display sub-area is located on at least one side of the planar display sub-area, and the curved surface display sub-area is connected to the first routing sub-area.
Optionally, in some embodiments of the present application, the display panel further includes a binding region, where the binding region is located at one end of the second trace sub-region, which is far away from the bending sub-region.
Optionally, in some embodiments of the present application, the display panel further includes a fracture prevention layer, the fracture prevention layer is located in the bending sub-region, and the fracture prevention layer is configured to prevent the fracture when the bending sub-region is bent.
Correspondingly, the application also provides an electronic device comprising the display panel.
The application provides a display panel and an electronic device. The display panel comprises a display area and a terminal area, wherein the terminal area is located on at least one side of the display area, and the terminal area comprises a bending sub-area, a first wiring sub-area and a second wiring sub-area. In a direction parallel to the first edge, the extension length of the first routing sub-area and the extension length of the second routing sub-area are greater than the extension length of the bending sub-area. The display panel segment provided by the application is designed in the bending sub-area, and the area of the bending sub-area is reduced. Thereby reducing the bending stiffness of the bending sub-area and enabling bending with less force. Meanwhile, the bending stress can be released in the bending sub-area, and the possibility of generating cracks during bending is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a first structure of a display panel provided in the present application;
FIG. 2 is a schematic diagram of a second structure of a display panel provided in the present application;
FIG. 3 is a schematic diagram of a third structure of a display panel provided in the present application;
FIG. 4 is a schematic diagram of a fourth structure of the display panel provided in the present application;
FIG. 5 is a schematic diagram of a film layer structure of a display panel provided in the present application;
fig. 6 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a display panel and an electronic device. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
Referring to fig. 1, fig. 1 is a first structural schematic diagram of a display panel provided in the present application. The display panel 100 includes a display area 10 and a terminal area 20. The terminal area 20 is located on at least one side of the display area 10. The terminal area 20 includes a bending sub-area 201, a first trace sub-area 202 and a second trace sub-area 203. The bending subregion 201 has a first side 201a and a second side 201b arranged opposite. The first trace sub-area 202 is connected to the first side 201 a. The second trace sub-region 203 is connected to the second side 201 b. In a direction parallel to the first edge 201a, the lengths of the first trace sub-region 202 and the second trace sub-region 203 are greater than the length of the bending sub-region 201.
In the curved display panel, the stress applied to the bent portion forming the curved surface is large. The bent portion in the curved display panel is also referred to as the terminal area 20 in this application. The traces in the terminal area 20 will be subject to stress concentration due to bending. The shape design is carried out in terminal area 20 to this application, through reducing the length of the sub-area 201 of buckling of connecting first line subregion 202 and second line subregion 203, has reduced the area of the sub-area 201 of buckling. Thereby reducing the bending stiffness of the bending sub-area 201 and enabling bending under less pressure and stress. Meanwhile, since the length of the first trace sub-region 202 and the length of the second trace sub-region 203 are greater than the length of the bending sub-region 201, the bending stress can be released in the bending sub-region 201. Thereby effectively improving the condition that the bending sub-area 201 has cracks and reducing the occurrence probability of displaying bright lines.
Please continue to refer to fig. 1. The display panel 100 further includes a first connecting corner 20a, a second connecting corner 20b, a third connecting corner 20c, and a fourth connecting corner 20 d. The first trace sub-area 202 and the bend sub-area 201 are connected by a first connecting corner 20a and a second connecting corner 20 b. The bending sub-area 201 and the second trace sub-area 203 are connected by a third connecting corner 20c and a fourth connecting corner 20 d. The first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c and the fourth connecting corner 20d are arc-shaped corners.
The connecting corners of the bending sub-region 201 and the first and second trace sub-regions 202 and 203 are the parts where the stress is concentrated when bending. In the application, the first connection corner 20a, the second connection corner 20b, the third connection corner 20c and the fourth connection corner 20d are set as arc-shaped corners, so that the connection between the bending sub-area 201 and the first wiring sub-area 202 and the second wiring sub-area 203 can be smoother, and the bending strength which can be borne by the connection can be improved. Thereby increasing the reliability, durability and safety stability of the connection between the bending sub-region 201 and the first routing sub-region 202 and the second routing sub-region 203. In addition, the arc-shaped corner can better release bending stress, better stress buffering is obtained at the joint, and the bending fracture condition is effectively improved.
In some embodiments, the first trace sub-region 202 and the second trace sub-region 203 are axisymmetric along a central axis 201c of the bending sub-region 201 parallel to the first side 201 a. That is, in some embodiments, the top and bottom structure of the bending sub-region 201 is symmetrical. The vertically symmetrical structure can balance the stress applied to the bending sub-region 201 during bending, thereby reducing the possibility of cracks generated during bending of the bending sub-region 201.
In some embodiments, the display area 10 includes a planar display sub-area 101 and a curved display sub-area 102, the curved display sub-area 102 is located on at least one side of the planar display sub-area 101, and the curved display sub-area 102 is connected to the first routing sub-area 202. In the present application, a curved surface display sub-area 102 is provided, and the curved surface display sub-area 102 is located on at least one side of the planar display sub-area 101. The display panel 100 is beneficial to realizing narrow frame, increasing screen occupation ratio and improving display quality.
Referring to fig. 2, fig. 2 is a schematic view of a second structure of a display panel provided in the present application. The difference from the display panel 100 shown in fig. 1 is that in the display panel 100 shown in fig. 2, the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c, and the fourth connecting corner 20d are right angles.
The process of making the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c and the fourth connecting corner 20d as right angles is simple, and the production cost can be saved. In addition, the connecting corners of the bending sub-area 201, the first routing sub-area 202 and the second routing sub-area 203 are set to be right angles, so that the mobility of the second routing sub-area 203 after bending can be increased, and the requirement on production precision is lowered. The connection corner is a right angle, which increases the flexibility of the bending sub-region 201 and prevents stress concentration, and reduces the bad phenomenon caused by the bending stress problem.
Referring to fig. 3, fig. 3 is a schematic view of a third structure of a display panel provided in the present application. In the display panel 100 shown in fig. 3, any one or more of the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c, and the fourth connecting corner 20d has at least one step. As an example, fig. 3 provides a step 20e at the third connecting corner 20c and the fourth connecting corner 20 d.
In some embodiments of the present application, providing any one or more of the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c, and the fourth connecting corner 20d as a step enables a gradient stress relief at the connecting corners. So that the stress generated during bending is gradually released at the connecting corners. The connection reliability of the connection corner is improved.
In fig. 3, the third connecting corner 20c and the fourth connecting corner 20d are illustrated as having a step. In an actual product, the first connecting corner 20a and the second connecting corner 20b may be provided to have one step. It is also possible to provide the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c and the fourth connecting corner 20d each with a one-step. In addition, the first connecting corner 20a, the second connecting corner 20b, the third connecting corner 20c and the fourth connecting corner 20d may be further configured to have two-step, three-step or four-step according to the process requirement. The application does not limit the connecting corner position provided with the steps and the number of the steps, and the description is omitted.
Please continue to refer to fig. 3. In some embodiments, the step 20e is axisymmetrical along a perpendicular 201d to the midpoint of the first side 201 a. That is, in some embodiments, the left and right structure of meander sub-region 201 is symmetric. The bilateral symmetry structure can make the stress released by the left and right parts of the bending sub-region 201 consistent when the bending sub-region 201 is bent, so that the stress of the bending sub-region 201 is balanced, and further the possibility of generating cracks when the bending sub-region 201 is bent is reduced.
Referring to fig. 4, fig. 4 is a schematic diagram of a fourth structure of the display panel provided in the present application. The display panel 100 also includes a bonding area 204. The bonding region 204 is located at an end of the second trace sub-region 203 far away from the bending sub-region 201. The bonding region 204 may be used to bond the flexible circuit board 205.
Bonding refers to the use of an anisotropic conductive adhesive to interconnect components during the manufacture of a display module, followed by aligned pressure and heat to form a stable and reliable mechanical and electrical connection between the components. It can also be called thermal compression welding or thermal compression according to the process characteristics. In this application, set up flexible circuit board 205 and can pass through the bonding technology at the one end that the subregion 201 is kept away from in second line subregion 203 and buckle, splice flexible circuit board 205 on binding the district 204 with the conducting resin, then hot pressing is fixed.
Referring to fig. 5, fig. 5 is a schematic view of a film layer structure of a display panel provided in the present application. The display panel comprises a heat dissipation layer 11, a substrate 12, a flexible display module 13, a polarizer 14, an optical adhesive 15, a cover plate 16 and a fracture prevention layer 17 which are stacked. The anti-fracture layer 17 is located in the bending sub-region 201, and the anti-fracture layer 17 is used for preventing fracture when the bending sub-region 201 is bent.
In the present embodiment, the fracture-preventing layer 17 is mainly used to prevent the fracture when the bending sub-region 201 is bent. In addition, the anti-fracture layer 17 can also play a role in buffering, and the influence on the product quality caused by the impact on the display device in the carrying process and the like is avoided. Optionally, the material of the fracture-preventing layer 17 may be foam, copper foil, diamond, silver, graphene, or other materials with good flexibility and toughness. The above materials also have good heat dissipation performance, and can further dissipate heat of the display panel 100 while preventing breakage.
It should be noted that the anti-cracking layer 17 in the present application only corresponds to the portion of the display panel 100 located in the bending sub-region 201, and in some embodiments, the anti-cracking layer 17 may be disposed at a local position of the display panel 100. Alternatively, it may be provided corresponding to the entire display panel 100. The anti-fracture layer 17 may be disposed on the side of the substrate 12 away from the flexible display module 13 as shown in fig. 5, or may be disposed at other positions. The specific film position of the rupture prevention layer 17 is not limited in this application and will not be described in detail herein.
The heat dissipation layer 11 has a heat dissipation function, and is used for dissipating heat for the display panel 100, so as to prevent the display panel 100 from affecting the performance of devices inside the display panel 100 due to an excessively high temperature during operation, thereby being beneficial to prolonging the service life of the display panel 100. In fig. 5, the heat dissipation layer 11 is disposed on a side of the substrate 12 away from the flexible display module 13. In practical applications, the heat dissipation layer 11 may be disposed at other positions, and the heat dissipation layer 11 may be disposed between a plurality of film layers. For example, the heat dissipation layer 11 may be disposed between the substrate 12 and the flexible display module 13. The position of the heat dissipation layer 11 is not limited in this application.
The substrate 12 is glass, functional glass (sensor glass) or a flexible substrate. The functional glass is obtained by sputtering a transparent metal oxide conductive film coating on the ultrathin glass and carrying out high-temperature annealing treatment. The transparent metal oxide may be any one of Indium Gallium Zinc Oxide (IGZO), Indium Zinc Tin Oxide (IZTO), Indium Gallium Zinc Tin Oxide (IGZTO), Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Indium Aluminum Zinc Oxide (IAZO), Indium Gallium Tin Oxide (IGTO), or Antimony Tin Oxide (ATO). The flexible substrate is made of a polymer material, and specifically, the flexible substrate may be made of Polyimide (PI), Polyethylene (PE), Polypropylene (PP), Polystyrene (PS), Polyethylene terephthalate (PET), or Polyethylene naphthalate (PEN). The polymer material has good flexibility, light weight and impact resistance, and is suitable for flexible display panels. Among them, polyimide can also achieve good heat resistance and stability.
The substrate 12 is made of a flexible material, so that the substrate 12 can bear the terminal area 20 and can also bend along with the terminal area 20.
It should be noted that the bending angle of the terminal area 20 of the display panel 100 provided by the present application may be less than or equal to 90 °, and the display panel 100 is applied to a side curved display. The bending angle of the terminal area of the display panel 100 provided by the present application may be 90 ° to 180 °, and the display panel 100 is applied to a folding display.
The application provides an electronic device. Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device provided in the present application. The electronic device 1000 includes a display panel 100 and a case 200. Other devices are also included in the electronic equipment. The assembly of the housing 200 and other devices is well known to those skilled in the art and will not be described further herein.
Wherein the housing 200 may form an outer contour of the electronic device 1000. In some embodiments, the housing 200 may include a middle frame and a rear cover combined with each other to form the housing 200, and the middle frame and the rear cover may form a receiving space to receive the display panel 100, the circuit board, and the battery, etc. Further, a cover plate may be fixed to the case 200, and the cover plate and the case 200 form a closed space to accommodate the display panel 100, the circuit board, and the battery and the like. In some embodiments, a cover plate is attached to the center frame, a rear cover is attached to the center frame, the cover plate and the rear cover are located on opposite sides of the center frame, and the cover plate and the rear cover are located opposite each other.
In some embodiments, the housing 200 may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the housing 200 of the present application is not limited thereto, and other manners may be adopted, such as: the housing 200 may be a plastic housing. Also for example: the housing 200 is a ceramic housing. For another example: the housing 200 may include a plastic portion and a metal portion. The housing 200 may also be a metal and plastic mating housing structure. Specifically, the metal part may be formed first, for example, a magnesium alloy substrate is formed by injection molding, and then plastic is injected on the magnesium alloy substrate to form a plastic substrate, so as to form a complete housing structure. It should be noted that the material and process of the housing 200 are not limited thereto. For example, the housing 200 may be a glass housing.
The circuit board is installed in the housing 200, and may be a main board of the electronic device 1000, and one, two or more functional components of a motor, a microphone, a speaker, an earphone interface, a universal serial bus interface, a front camera, a rear camera, a distance sensor, an ambient light sensor, a receiver, a processor, and the like may be integrated on the circuit board.
The electronic device provided by the application may be at least one of a smart phone (smartphone), a tablet personal computer (tablet personal computer), a mobile phone (mobile phone), a video phone, an electronic book reader (e-book reader), a desktop computer (desktop PC), a laptop PC (laptop PC), a netbook computer, a workstation (workstation), a server, a personal digital assistant (personal digital assistant), a portable media player (portable multimedia layer), an MP3 player, a mobile medical machine, a camera, a game machine, a digital camera, a car navigator, an electronic billboard, an automatic teller machine, or a wearable device (wearable device).
The electronic device includes a display panel including a display area and a terminal area. The terminal area comprises a first wiring sub-area, a second wiring sub-area and a bending sub-area. The display panel that this application provided carries out shape design in the terminal area, through reducing the length of connecting the first subregion of walking the line and the second subregion of buckling of walking the line, has reduced the area in subregion of buckling. Thereby reducing the bending stiffness of the bending subarea and realizing bending under smaller pressure and stress. Meanwhile, the length of the first wiring sub-area and the length of the second wiring sub-area are greater than the length of the bending sub-area, so that bending stress can be released in the bending sub-area. Thereby effectively improving the condition that cracks are generated in the bending sub-area and reducing the probability of displaying bright lines.
The display panel and the electronic device provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments is only used to help understand the method and the core idea of 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 (10)
1. A display panel comprising a display area and a terminal area, the terminal area being located on at least one side of the display area, the terminal area comprising:
the bending sub-area is provided with a first edge and a second edge which are oppositely arranged;
the first wiring sub-area is connected with the first edge;
a second routing sub-area connected with the second edge;
in a direction parallel to the first edge, the length of the first routing sub-area and the length of the second routing sub-area are greater than the length of the bending sub-area.
2. The display panel of claim 1, wherein the display panel further comprises a first connecting corner, a second connecting corner, a third connecting corner, and a fourth connecting corner;
the first wiring sub-area and the bending sub-area are connected through the first connecting corner and the second connecting corner; the bending sub-area and the second routing sub-area are connected through the third connecting corner and the fourth connecting corner;
the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner are curved corners.
3. The display panel of claim 1, wherein the display panel further comprises a first connecting corner, a second connecting corner, a third connecting corner, and a fourth connecting corner;
the first wiring sub-area and the bending sub-area are connected through the first connecting corner and the second connecting corner; the bending sub-area and the second routing sub-area are connected through the third connecting corner and the fourth connecting corner;
the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner are right angles.
4. The display panel according to claim 2 or 3, wherein any one or more of the first connecting corner, the second connecting corner, the third connecting corner and the fourth connecting corner has at least one step.
5. The display panel according to claim 4, wherein the step is axisymmetric along a perpendicular to the midpoint of the first edge.
6. The display panel according to claim 4, wherein the first routing sub-region and the second routing sub-region are axisymmetric along a central axis of the bending sub-region parallel to the first edge.
7. The display panel according to claim 1, wherein the display area comprises a planar display sub-area and a curved display sub-area, the curved display sub-area is located on at least one side of the planar display sub-area, and the curved display sub-area is connected to the first routing sub-area.
8. The display panel according to claim 1, wherein the display panel further comprises a bonding region located at an end of the second trace sub-region away from the bending sub-region.
9. The display panel according to claim 1, further comprising a fracture-preventing layer, wherein the fracture-preventing layer is located in the bending sub-region, and the fracture-preventing layer is used for preventing fracture when the bending sub-region is bent.
10. An electronic device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202110460260.7A CN113223410A (en) | 2021-04-27 | 2021-04-27 | Display panel and electronic device |
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| CN202110460260.7A CN113223410A (en) | 2021-04-27 | 2021-04-27 | Display panel and electronic device |
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