CN109585461B - Display panel and display device - Google Patents
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- CN109585461B CN109585461B CN201811641957.9A CN201811641957A CN109585461B CN 109585461 B CN109585461 B CN 109585461B CN 201811641957 A CN201811641957 A CN 201811641957A CN 109585461 B CN109585461 B CN 109585461B
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- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1248—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
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- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
- H01L27/1244—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits for preventing breakage, peeling or short circuiting
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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Abstract
The invention has described a display panel and display device, through setting up a plurality of concave structures and protruding structures arranged alternately in the first direction and second direction perpendicular to each other on the organic insulating layer of the bending zone, on one hand, can disperse the bending external force that receives when the bending zone buckles, strengthen the flexibility of the display panel, overcome the problem of bending zone flexibility relatively poor that the organic insulating layer is thicker in the existing design; on the other hand, the stress on the signal lines on the organic insulating layer can be reduced, the signal lines are prevented from being damaged due to bending external force, the distance between the adjacent signal lines can be increased, signal crosstalk is avoided, and the reliability of the display panel is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of panel display screens, the demand for high-screen-ratio products is higher and higher.
The full-screen frameless display product can enable a user to obtain better viewing experience. Pad warping (padending) is the core technology of full-screen frameless display products. However, as shown in fig. 1, fig. 1 is a schematic structural diagram of a flexible display panel in the prior art. The flexible display panel comprises a display area 100 'and a Bending area, the inorganic insulating layer 101' is generally more fragile, and the Pad bonding can crack the inorganic insulating layer 101 'in the Bending area of the display product, and the crack is easy to propagate to the signal line layer 102', thereby causing display failure. In order to avoid the crack of the inorganic insulating layer 101 ' in the bending region, in the prior art, a Mask process is usually added to remove the inorganic insulating layer 101 ' in the bending region, and then a Mask process is added to form an organic insulating layer in the bending region, and then the signal line layer 102 ' is formed on the organic insulating layer. In this way, since the inorganic insulating layer 101 'does not exist in the Bending region, when Pad bonding is realized, cracks are less likely to occur, and further, the cracks do not propagate to the signal line layer 102'.
After the organic insulating layer is filled, although the bending strength is improved, the thickness of the film in the bending area is thick, so that the flexibility of the bending area is poor.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, so as to improve the flexibility of the bending region.
The present invention provides a display panel, comprising:
a flexible substrate comprising a bend region, the bend region comprising a bend axis, the bend axis extending in a first direction;
the organic insulating layer is positioned on the flexible substrate and comprises a plurality of alternately arranged concave structures and convex structures along the first direction, the organic insulating layer comprises a plurality of alternately arranged concave structures and convex structures along the second direction, and the second direction is perpendicular to the first direction;
and a signal line on the organic insulating layer.
Optionally, one side of the flexible substrate located in the bending region, which faces away from the organic insulating layer, includes a plurality of alternately arranged concave structures and convex structures along the second direction, and the concave structures and the convex structures extend along the first direction.
Optionally, the flexible substrate located in the bending region on a side away from the organic insulating layer includes a plurality of alternatively arranged concave structures and convex structures along the first direction, and includes a plurality of alternatively arranged concave structures and convex structures along the second direction.
Optionally, the maximum width of the recessed structure of the flexible substrate located in the bending region along the second direction is greater than the maximum width of the recessed structure of the organic insulating layer along the second direction.
Optionally, the concave structure of the flexible substrate located in the bending region coincides with an orthographic projection of the concave structure of the organic insulating layer on the flexible substrate, and the convex structure of the flexible substrate located in the bending region coincides with an orthographic projection of the convex structure of the organic insulating layer on the flexible substrate.
Optionally, the display device further comprises a display area, the display area further comprises a thin film transistor, the thin film transistor comprises an active layer, a gate layer and a source drain layer, the signal line extends from the display area to the bending area, and the signal line and at least one of the gate layer and the source drain layer are located on the same layer.
Optionally, the signal line extends on the organic insulating layer along a third direction, and an included angle between the third direction and the first direction is 45 degrees;
the signal line is positioned in the concave structure of the organic insulating layer, and the line width of the signal line is d 1; the width of the signal line positioned in the display region is d2, and d1 is greater than d 2.
Optionally, the signal line further comprises a protective adhesive, and the protective adhesive covers the signal line.
Optionally, the flexible substrate material comprises one or more of polyimide or polymethyl methacrylate.
Based on the same inventive concept, the invention also provides a display device comprising the display panel.
Compared with the prior art, the invention has at least one of the following outstanding advantages:
according to the display panel provided by the invention, the plurality of alternately arranged concave structures and convex structures are arranged on the organic insulating layer of the bending area along the first direction and the second direction which are mutually perpendicular, so that on one hand, the bending external force applied to the bending area can be dispersed when the bending area is bent, the flexibility of the display panel is enhanced, and the problem of poor flexibility of the bending area caused by thicker organic insulating layer in the existing design is solved; on the other hand, the stress on the signal lines on the organic insulating layer can be reduced, the signal lines are prevented from being damaged due to bending external force, the distance between the adjacent signal lines can be increased, signal crosstalk is avoided, and the reliability of the display panel is improved.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display panel in the prior art;
FIG. 2 is a top view of a display panel according to an embodiment of the present invention;
FIG. 3 is a top view of the concave structures and the convex structures in the bending region of the display panel shown in FIG. 2;
FIG. 4 is a cross-sectional view of the inflection zone of FIG. 3 taken along a second direction;
FIG. 5 is a cross-sectional view of the inflection zone of FIG. 3 taken along a first direction;
FIG. 6 is a top view of a flexible substrate provided by embodiments of the present invention;
FIG. 7 is another top view of a flexible substrate provided by embodiments of the present invention;
FIG. 8 is a cross-sectional view of a display panel with a bending region along a second direction according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of the display panel of FIG. 8 taken along a second direction;
FIG. 10 is a cross-sectional view of a display panel with a bending region along a second direction according to an embodiment of the present invention;
FIG. 11 is a cross-sectional view of the display panel of FIG. 2 taken along a second direction;
fig. 12 is a schematic structural diagram of a display panel according to an embodiment of the invention when the display panel is bent;
FIG. 13 is a cross-sectional view of a display panel with a bending region along a first direction according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
An embodiment of the invention provides a display panel, as shown in fig. 2 to 5, fig. 2 is a top view of the display panel provided by the embodiment of the invention, fig. 3 is a top view of a concave structure and a convex structure in a bending region of the display panel in fig. 2, fig. 4 is a sectional view of the bending region in fig. 3 along a second direction, and fig. 5 is a sectional view of the bending region in fig. 3 along a first direction. The display panel comprises a flexible substrate 100, the flexible substrate 100 comprises a bending area 200, the bending area comprises a bending axis 201, the bending axis extends along a first direction X, the display panel further comprises an organic insulating layer 110 layered on the flexible substrate 100 and a signal line 102 layered on the organic insulating layer 110, the first direction X of the organic insulating layer 100 comprises a plurality of alternatively arranged concave structures 111 and convex structures 112, the organic insulating layer 110 comprises a plurality of alternatively arranged concave structures 111 and convex structures 112 along a second direction Y, and the first direction X is perpendicular to the second direction Y.
In the design of the bending region of the conventional display panel, in order to improve the bending resistance of the display panel, an inorganic insulating layer with high brittleness is usually removed and filled with a layer of organic insulating material to form an organic insulating layer, but the flexibility of the display panel is also limited due to the thick film thickness of the organic insulating layer.
In addition, with continued reference to fig. 4 and fig. 5, fig. 4 is a cross-sectional view of the bending region in fig. 3 along a second direction, and fig. 5 is a cross-sectional view of the bending region in fig. 3 along a first direction. As can be seen from the cross-sectional view along the second direction, since the organic insulating layer 110 has a plurality of concave structures 111 and convex structures 112, when the signal line 102 covering the organic insulating layer 110 extends along the second direction, the signal line 102 will form a wavy shape in order to fit the concave structures 111 and the convex structures 112, and it can be understood that when the bending region 200 is bent along the bending axis 201, the wavy signal line 102 can disperse the bending stress, thereby preventing the signal line 102 from being stretched badly due to the bending stress, improving the bending resistance of the signal line 102, and improving the service life of the display panel.
Meanwhile, as shown in fig. 5, in the first direction X, the adjacent signal lines 102 are arranged in a staggered manner along with the protrusion structures 112 and the recess structures 111 alternately arranged on the organic insulating layer 110.
It can be understood that Mask is designed by adopting a Mask plate process and opening holes at equal intervals and equal intervals, so that the organic insulating layer 110 with the concave-convex structure arranged in a chessboard shape provided by the embodiment of the invention can be obtained. Compared with the inorganic insulating layer, on one hand, the exposure development angle of the organic insulating layer is smooth, the exposure development etching angle of the inorganic insulating layer is sharp, and the smooth angle of the organic insulating layer can prevent the signal line 102 on the insulating layer from being broken, so that the reliability and the service resistance of the display panel are improved.
Optionally, referring to fig. 6, fig. 6 is a top view of a flexible substrate according to an embodiment of the present invention. The side of the flexible substrate 100 facing away from the organic insulating layer 110 in the bending region also includes a plurality of alternately arranged concave structures 11 and convex structures 12 along the second direction Y, and the concave structures and the convex structures extend along the first direction X, that is, at this time, the flexible substrate is a structure having a plurality of strip-shaped grooves and strip-shaped protrusions.
Further, referring to fig. 7 based on the same inventive concept, fig. 7 is another top view of the flexible substrate provided in the embodiment of the present invention. The flexible substrate 100 located in the bending region includes a plurality of alternately arranged concave structures 11 and convex structures 12 along the first direction X on a side facing away from the organic insulating layer 110, and also includes a plurality of alternately arranged concave structures 11 and convex structures 12 along the second direction Y.
It can be understood that compared with a flat structure, the flexible substrate 100 can be enhanced in the rugged design, and in addition, since the flexible substrate 100 also adopts a mode that the plurality of concave structures 11 and the convex structures 12 are alternately arranged, when the bending region is bent, the bending stress is mainly shared by the concave structures 11 of the flexible substrate 100, and at this time, the flexible substrate 100 can further reduce the bending stress on the organic insulating layer 110 and the signal line 102, and improve the service life of the display panel. In addition, the flexible substrate 100 and the organic insulating layer 110 are matched to form a double-layer wavy section, so that the bending strength can be ensured, and the flexibility of a bending area can be increased.
To facilitate understanding of the embodiment of the present invention, please refer to fig. 8 and 9, fig. 8 is another cross-sectional view of the display panel bending region along the second direction according to the embodiment of the present invention, and fig. 9 is a cross-sectional view of the display panel bending region along the second direction in fig. 8. When the flexible substrate 100 in the bending region 200 is also arranged in a "chessboard", the signal lines 102 are routed in a wave shape in the second direction, which is beneficial to reducing the bending stress applied to the bending region when the bending region is bent, and can protect the signal transmission routing in the bending region. Meanwhile, the adjacent signal lines 102 are arranged in a staggered manner in the first direction, so that signal crosstalk between the signal lines 102 can be avoided.
It can be understood that, in the existing design, the flexible substrate 100 is usually coated on a glass substrate, and is peeled off from the glass substrate after the display panel is manufactured, so that, for the flexible substrate 100 having a plurality of concave structures 11 and convex structures 12, only a laser etching process is required to etch corresponding concave-convex structures at preset positions on the glass substrate, and the flexible substrate 100 having a plurality of concave-convex structures provided in the embodiment of the present invention can be manufactured.
Optionally, referring to fig. 10, fig. 10 is another cross-sectional view of the display panel bending region along the second direction according to the embodiment of the present invention. The maximum width of the concave structure of the flexible substrate 100 in the bending region 200 along the second direction Y is greater than the maximum width of the concave structure of the organic insulating layer 110 along the second direction Y. It can be understood that, at this time, the orthographic area of the concave structures 11 in the flexible substrate at the interface of the flexible substrate and the organic insulating layer is considered to be larger than the orthographic area of the concave structures 111 in the organic insulating layer at the interface of the flexible substrate and the organic insulating layer.
It can be understood, generally speaking, in the process of buckling, organic insulating layer 110 and signal line 102 who keep away from flexible substrate 100 receive the stress of buckling bigger when buckling, consequently adopt differentiation design, improve the density of sunk structure 111 and protruding structure 112 in the organic insulating layer 110 of flexible substrate top, can further promote the effect that reduces the stress of buckling, and simultaneously, the mode that a plurality of unevenness set up in turn can reduce the risk that the signal line received the loss, can be when guaranteeing resistant intensity of buckling and promote the display panel flexibility.
Optionally, referring to fig. 11, fig. 11 is a further cross-sectional view of the display panel bending region in fig. 2 along the second direction. In the embodiment of the present invention, the projection of the convex structure of the flexible substrate 100 located in the bending region coincides with the orthographic projection of the convex structure of the organic insulating layer 110 on the flexible substrate 100, and the recess structure of the flexible substrate 100 coincides with the orthographic projection of the recess structure of the organic insulating layer 110 on the flexible substrate. It is understood that, at this time, it is considered that there is a shortest distance T between the organic insulation layer 110 and the flexible substrate 100, and when the bending region 200 is bent, the flexible substrate 100 is shrunk toward the center along the groove structure, and the flexibility of the bending region can be enhanced due to the shortest thickness T.
Optionally, referring to fig. 12, fig. 12 is a schematic structural diagram of the display panel provided in the embodiment of the present invention when the display panel is bent. The signal line 102 extends from the display area AA to the bending area, and may be located at the same layer as at least one of the active layer 3, the gate layer 2, and the source-drain layer 1 of the thin film transistor TFT in the display area AA, for transmitting a signal to the display area AA. It is understood that the signal line 102 may be fabricated by the same process as the source/drain line in the source/drain layer/the gate line in the gate layer. It should be noted that the signal lines in the embodiment of the present invention are not limited to the source drain lines and the gate lines, and may also include lines of the anode metal layer RE in the OLED device on the same layer, or lines of a fourth metal layer located above the source drain layer, which may also exist in some display panels, if necessary.
Optionally, because the concave structures 111 and the convex structures 112 of the organic insulating layer 110 are alternately arranged along the first direction X and the second direction Y, and the thickness of the organic insulating layer 110 at the boundary of each adjacent concave structure 111 and convex structure 112 is the same, in the embodiment of the present invention, the signal line 102 led out from the display area AA may be disposed at the boundary of the concave and convex structures, that is, the signal line 102 is disposed along the third direction Z, when the forward projection areas of the concave structure and the convex structure in the organic insulating layer 110 on the display substrate 100 are the same, an included angle of 45 ° is formed between Z and X, and the convex structures 112 are used to separate the signal lines from each other, so as to increase the distance between the adjacent signal lines and avoid signal crosstalk. Meanwhile, when the signal line 102 is located in the display area AA and has a width d2, the line width d1 of the signal line in the bending area AA can be increased, and d1 is larger than d2, so that the resistance of the trace is reduced.
Alternatively, in the display panel provided in the embodiment of the present invention, the material of the flexible substrate 100 may be one or more of polyimide or polymethyl methacrylate. In order to realize the flexibility and the flexibility of the display panel, the flexible substrate 100 may be made of a polyimide polymer material, such as photosensitive polyimide photoresist, and may also be polymethyl methacrylate. The organic insulating layer may be made of the same material as the planarization layer, or may be made of another organic insulating material. It should be noted that the material of the flexible substrate may also include other materials with flexible characteristics, and this is not particularly limited in the embodiment of the present invention.
Optionally, referring to fig. 13, fig. 13 is a cross-sectional view of the display panel bending region along the first direction according to the embodiment of the present invention. In the embodiment of the present invention, the protective adhesive 300 may be further used to cover the shortest signal distance T, so that the flexibility of the bending region of the display panel may be improved, and meanwhile, the concave structure may bear bending stress, thereby protecting the signal line 102 on the organic insulating layer 110 and improving the durability of the display panel. For the flat insulating layer 110 in the existing design, the protective glue is in a liquid state when being coated, and due to the flowing characteristic of the liquid, the protective glue can overflow outwards along the surface of the organic insulating layer 110, which affects the performance of the display panel, and meanwhile, the thickness of the protective glue can not be controlled due to the overflow condition of the glue. The chessboard-shaped organic insulation layer 110 with the plurality of concave structures 111 and the plurality of convex structures 112 alternately arranged along the first direction X and the second direction Y provided by the embodiment of the invention can improve the overflow condition of the colloid in the coating process of the protective adhesive due to the accommodating characteristic of the concave structures 111, thereby avoiding influencing the display panel, and meanwhile, the thickness of the protective adhesive 300 is controlled by controlling the volume of the adhesive in the coating process of the protective adhesive, so the thickness of the protective adhesive 300 in the embodiment of the invention is easier to control, and the durability of the display panel can be improved.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 14, and fig. 14 is a schematic structural diagram of the display device provided in the embodiment of the present invention. The display device comprises the display panel. The specific structure of the display panel has been described in detail in the above embodiments, and is not described herein again. It should be noted that the display device shown in fig. 14 is only a schematic illustration, and the device may be, for example, a mobile phone, a tablet computer, or a notebook computer. Any electronic device with a display function, such as an electronic paper book or a television.
Because the display device provided by the embodiment of the invention comprises the display panel, the bending area of the display device has better flexibility.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. A display panel, comprising:
a flexible substrate comprising a bend region, the bend region comprising a bend axis, the bend axis extending in a first direction;
the organic insulating layer is positioned on the flexible substrate and comprises a plurality of alternately arranged concave structures and convex structures along the first direction, the organic insulating layer comprises a plurality of alternately arranged concave structures and convex structures along the second direction, and the second direction is perpendicular to the first direction;
a signal line on the organic insulating layer;
the display panel further comprises a display area, the display area further comprises a thin film transistor, the thin film transistor comprises an active layer, a grid layer and a source drain layer, the signal line extends from the display area to the bending area, and the signal line and at least one of the grid layer and the source drain layer are located on the same layer;
the signal line extends on the organic insulating layer along a third direction, and an included angle between the third direction and the first direction is 45 degrees;
the signal line is positioned in the concave structure of the organic insulating layer, and the line width of the signal line is d 1; the width of the signal line positioned in the display region is d2, and d1 is greater than d 2.
2. The display panel according to claim 1, wherein a side of the flexible substrate facing away from the organic insulating layer in the bending region includes a plurality of alternately arranged concave structures and convex structures along the second direction, and the concave structures and the convex structures extend along the first direction.
3. The display panel according to claim 1, wherein a side of the flexible substrate facing away from the organic insulating layer in the bending region includes a plurality of alternately arranged concave structures and convex structures along the first direction, and includes a plurality of alternately arranged concave structures and convex structures along the second direction.
4. The display panel according to claim 2 or 3, wherein a maximum width of the recess structure of the flexible substrate in the second direction at the bending region is greater than a maximum width of the recess structure of the organic insulating layer in the second direction.
5. The display panel according to claim 2 or 3, wherein the recessed structures of the flexible substrate at the bending region coincide with an orthographic projection of the recessed structures of the organic insulating layer on the flexible substrate, and the protruding structures of the flexible substrate at the bending region coincide with an orthographic projection of the protruding structures of the organic insulating layer on the flexible substrate.
6. The display panel according to claim 1, further comprising a protective paste covering the signal lines.
7. The display panel of claim 1, wherein the flexible substrate material comprises one or more of polyimide or polymethylmethacrylate.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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| CN201811641957.9A CN109585461B (en) | 2018-12-29 | 2018-12-29 | Display panel and display device |
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| CN110085552B (en) * | 2019-04-15 | 2022-07-12 | 厦门天马微电子有限公司 | Display panel, display device and manufacturing method of display panel |
| CN110112142B (en) * | 2019-04-29 | 2021-05-07 | 武汉华星光电半导体显示技术有限公司 | Array substrate, manufacturing method thereof, display panel and electronic device |
| CN110444578B (en) * | 2019-08-14 | 2021-11-09 | 京东方科技集团股份有限公司 | Flexible display panel and manufacturing method thereof |
| CN110444549B (en) * | 2019-08-14 | 2021-09-21 | 京东方科技集团股份有限公司 | Flexible display panel and manufacturing method thereof |
| CN110518041B (en) * | 2019-08-29 | 2022-11-04 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| WO2021082287A1 (en) * | 2019-10-30 | 2021-05-06 | 南昌欧菲生物识别技术有限公司 | Support structure and flexible printed circuit board |
| US11398621B2 (en) | 2019-11-26 | 2022-07-26 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and method of manufacturing the same |
| CN110931530B (en) * | 2019-11-26 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN111129086B (en) * | 2019-12-13 | 2024-06-18 | 武汉华星光电技术有限公司 | Flexible display panel and manufacturing method thereof |
| CN111627331B (en) * | 2020-05-18 | 2022-04-08 | 武汉华星光电半导体显示技术有限公司 | Display screen and display device |
| CN112289947A (en) * | 2020-10-26 | 2021-01-29 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel |
| CN112885965B (en) * | 2021-01-28 | 2022-09-23 | 昆山国显光电有限公司 | Display panel, preparation method of display panel and display terminal |
| CN112992938B (en) * | 2021-02-25 | 2023-09-19 | 合肥鑫晟光电科技有限公司 | Array substrate, preparation method thereof and display panel |
| CN113068380B (en) | 2021-03-26 | 2022-08-05 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113193026A (en) * | 2021-04-27 | 2021-07-30 | Oppo广东移动通信有限公司 | Electronic equipment, display panel, display substrate and manufacturing method thereof |
| CN113345923B (en) * | 2021-06-01 | 2024-04-16 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113870705A (en) * | 2021-09-28 | 2021-12-31 | 武汉天马微电子有限公司 | Flexible display panel, preparation method thereof and curved surface display screen |
| CN114333616B (en) * | 2021-11-15 | 2023-11-10 | 合肥维信诺科技有限公司 | Display panel, pressing device and preparation method of display panel |
| CN117322166A (en) * | 2021-12-02 | 2023-12-29 | 京东方科技集团股份有限公司 | Display substrate and electronic device |
| CN114698232A (en) * | 2022-03-29 | 2022-07-01 | 昆山国显光电有限公司 | Display panel and display device |
| CN114711728B (en) * | 2022-06-10 | 2023-02-24 | 天津大学 | Flexible near-infrared imaging device with variable monitoring area and depth and preparation method thereof |
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