CN108417604B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN108417604B
CN108417604B CN201810161940.7A CN201810161940A CN108417604B CN 108417604 B CN108417604 B CN 108417604B CN 201810161940 A CN201810161940 A CN 201810161940A CN 108417604 B CN108417604 B CN 108417604B
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CN
China
Prior art keywords
layer
sub
display panel
routing
groove
Prior art date
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CN201810161940.7A
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Chinese (zh)
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CN108417604A (en
Inventor
李针英
刘雪宁
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上海天马微电子有限公司
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Priority to CN201810161940.7A priority Critical patent/CN108417604B/en
Publication of CN108417604A publication Critical patent/CN108417604A/en
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Publication of CN108417604B publication Critical patent/CN108417604B/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3241Matrix-type displays
    • H01L27/3244Active matrix displays
    • H01L27/3276Wiring lines
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3241Matrix-type displays
    • H01L27/3244Active matrix displays
    • H01L27/3276Wiring lines
    • H01L27/3279Wiring lines comprising structures specially adapted for lowering the resistance

Abstract

The invention discloses a display panel and a display device, which belong to the technical field of display and comprise: a display area and a non-display area; the non-display area comprises a bending area; the display panel comprises a flexible substrate, a first inorganic layer and an organic layer which are arranged in sequence; in the bending area, the first inorganic layer comprises at least one first groove; the flexible substrate is provided with a plurality of signal wires, each signal wire comprises a first wire routing part positioned in the bending area, and each first wire routing part comprises a first sub-part, a second sub-part and a third sub-part; the second sub-part comprises at least two sections of second sub-routing parts, and the two adjacent sections of second sub-routing parts are respectively positioned on two opposite sides of the area where the first groove is positioned; the at least one second sub-wiring part and the first sub-part are electrically connected through the first via; part of the third sub-part is positioned in the area of the first groove; the second sub-portion and the third sub-portion are electrically connected through a second via. Compared with the prior art, the bending capacity of the bending area can be improved.

Description

Display panel and display device

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 popularization of full-screen products, the bending resistance of the flexible display panel is required to be higher and higher.

In the flexible display panel provided by the prior art, the wires in the bending area are easy to have short circuit, fracture and other conditions, which affects the yield and reliability of the flexible display panel.

Disclosure of Invention

In view of the foregoing, the present invention provides a display panel and a display device.

The present invention provides a display panel, comprising: a display area and a non-display area; the non-display area comprises a bending area; the display panel comprises a flexible substrate, a first inorganic layer and an organic layer which are arranged in sequence; in the bending area, the first inorganic layer comprises at least one first groove, the first groove extends along a first direction, and the organic layer at least fills the first groove; the flexible substrate is provided with a plurality of signal wires, each signal wire comprises a first wire routing part positioned in the bending area, and each first wire routing part comprises a first sub-part, a second sub-part and a third sub-part; the first sub-portion is located between the flexible substrate and the first inorganic layer, the second sub-portion is located between the first inorganic layer and the organic layer, and the third sub-portion is located on the side, away from the flexible substrate, of the organic layer; part of the first sub-part is positioned in the area of the first groove; the second sub-part comprises at least two sections of second sub-routing parts, and the two adjacent sections of second sub-routing parts are respectively positioned on two opposite sides of the area where the first groove is positioned; the first inorganic layer comprises a first via hole, and the at least one second sub-routing part and the first sub-part are electrically connected through the first via hole; part of the third sub-part is positioned in the area of the first groove; the organic layer includes a second via hole through which the second sub-portion and the third sub-portion are electrically connected.

The invention provides a display device which comprises a display panel provided by the invention.

Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:

the first routing portion comprises three layers of sub-portions and forms a structure similar to a net, and on one hand, the resistance of the signal routing can be reduced; on the other hand, if one sub-part is broken in the three sub-parts, the signal routing wires can also transmit electric signals through the rest sub-parts, so that the bending resistance of the signal routing wires is improved, the reliability of the display panel is improved, and the yield of the display panel is improved.

In addition, the second sub-portion comprises at least two sections of second sub-routing parts, and the two adjacent sections of second sub-routing parts are respectively located on two opposite sides of the area where the first groove is located. In other words, the second sub-portion does not extend through the first recess, the second sub-portion avoiding the first recess. The two adjacent sections of the second sub-routing portions can be electrically connected through the first via hole and the first sub-portion, namely, the first via hole and the first sub-portion can realize a bridge-crossing function; the second via hole and the third sub-portion can be electrically connected, that is, the second via hole and the third sub-portion can perform a "bridge" function. Compared with the prior art, the signal wiring does not need to be wired from the first groove, so that photoresist residue can be avoided, the short circuit phenomenon caused by electric connection of the signal wiring is avoided, the performance of the signal wiring for transmitting electric signals is improved, and the yield of the display panel is improved. In addition, compared with the prior art, the phenomenon that the signal wiring is easy to break at the side wall of the first groove can be avoided, and the yield of the display panel is further improved.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;

fig. 2 is a schematic plan view of a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line BB' of FIG. 2;

FIG. 4 is a schematic plan view illustrating a display panel according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line DD' of FIG. 5;

FIG. 7 is a schematic diagram of a partial cross-sectional structure of another display panel according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial cross-sectional structure of a display area of a display panel according to another embodiment of the present invention;

FIG. 9 is a schematic diagram of a partial cross-sectional structure of a display area of a display panel according to another embodiment of the present invention;

FIG. 10 is a schematic diagram of a partial cross-sectional structure of a display area of a display panel according to another embodiment of the present invention;

fig. 11 is a schematic plan view illustrating a display panel according to another embodiment of the present invention;

fig. 12 is a schematic plan view of a display device according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1, a flexible display panel provided in the prior art includes a substrate 01, an inorganic layer 02, and a plurality of metal traces 03. Among them, the inorganic layer 02 includes a plurality of inorganic layers.

The flexible display panel provided by the prior art needs to have good bending performance, and thus the inorganic layer 02 at the bending position needs to be etched to form the groove 04. Research personnel discover that when manufacturing the metal wiring 03, the photoresist is easy to remain in the groove 04, and metal material residues may be caused between the metal wiring 03, so that the metal wiring is electrically connected to form a short circuit phenomenon, the performance of the plurality of metal wiring 03 for transmitting electrical signals is affected, and the yield of the flexible display panel is reduced.

In addition, the developer also finds that, in the process of manufacturing the flexible display panel, the plurality of inorganic layers in the inorganic layers 02 need to be etched one by one to finally form the groove 04. Due to the unstable process and other conditions, the etching angle of part of the inorganic layer 021 on the side wall of the groove 04 has deviation, and the metal routing 03 is easy to break at the position corresponding to the inorganic layer 021, so that the yield of the flexible display panel is further reduced.

Referring to fig. 2 and 3, a display panel a provided by the present embodiment includes a display area AA and a non-display area BB, the non-display area BB includes a bending area 10, the display panel a includes a flexible substrate 001, a first inorganic layer 002 and an organic layer 003 sequentially disposed, in the bending area 10, the first inorganic layer 002 includes at least one first groove 201, the first groove 201 extends along a first direction y, the organic layer 003 at least fills the first groove 201, a plurality of signal traces S are disposed on the flexible substrate 001, the signal traces S include a first trace 101 located in the bending area 10, the first trace 101 includes a first sub-portion 101a, a second sub-portion 101b and a third sub-portion 101c, the first sub-portion 101a is located between the flexible substrate 001 and the first inorganic layer 002, the second sub-portion 101b is located between the first inorganic layer 002 and the organic layer 003, the third sub-portion 101c is located on a side of the organic layer 001 facing away from the flexible substrate, a portion 101a is located in a first groove 002, the second sub-portion 101b is located in a groove 101a, the first sub-portion 101a, the second sub-portion 101b is located in a groove 302, the first groove 201, the second sub-portion 201 b is located in a, the first sub-portion 201, the second sub-portion 101c is located on a, the first sub-portion 301, the second sub-portion 302 is electrically connected to the first sub-portion 301, and the second sub-portion 301, the second sub-portion 301, the second sub-portion 201, the second sub-portion.

In the display panel provided by the embodiment, the display area AA is used for displaying an image; the non-display area BB may be provided with a circuit structure or an electronic component.

The non-display area includes a bending area 10, and the display panel can be bent or curved at the position of the bending area 10.

The display panel a includes a flexible substrate 001, a first inorganic layer 002, and an organic layer 003 which are sequentially provided. The flexible substrate 001 is made of a flexible material, such as a resin material, for example, polyimide. The first inorganic layer 002 may have a single-layer structure, or may have two or more layers, and the organic layer 003 may have a single-layer structure, or may have two or more layers, which are not limited in this embodiment.

In order to improve the bending performance of the bending region 10, the first inorganic layer 002 is provided with at least one first groove 201 in the bending region 10. In fig. 2 and 3, only one number of first grooves 201 is taken as an example for description. It is understood that the number of the first grooves 201 may be 2, 3 or more, and the embodiment is not particularly limited thereto.

For example, referring to fig. 4, two first grooves 201 are disposed in the display panel shown in fig. 4, and optionally, the two first grooves 201 may be arranged along the first direction y, but is not limited thereto. In addition, optionally, a plurality of data lines D may be disposed in the display area AA, and the signal traces S may be electrically connected to the data lines D. Optionally, the non-display area BB may further include a bonding area BB1, and a chip (IC) or a flexible circuit board (FPC) may be bonded in the bonding area BB 1. The signal trace S may be connected to the conductive PAD in the bonding area BB 1. It is understood that other circuit structures and electronic components can be disposed in the bending region 10, and the embodiment is not particularly limited thereto.

A plurality of signal traces S are disposed on the flexible substrate 001, and the signal traces S extend through the area where the first groove 201 is located.

In this embodiment, the first routing portion 101 is disposed in the signal trace S, and the first routing portion 101 is located in the bending region 10. specifically, the first routing portion 101 includes three sub-portions, i.e., a first sub-portion 101a, a second sub-portion 101b and a third sub-portion 101c, the second routing portion L is electrically connected to the first sub-portion 101a through the first via 301, and the second sub-portion 101b is electrically connected to the third sub-portion 101c through the second via 302. the first routing portion 101 includes three sub-portions, and forms a mesh-like structure, on one hand, the resistance of the signal trace S can be reduced, and on the other hand, if one of the three sub-portions is broken, the signal trace S can transmit an electrical signal through the remaining sub-portions, so that the bending resistance of the signal trace S is improved, the reliability of the display panel is improved, and the yield of the display panel is improved.

In addition, the second sub-portion 101b includes at least two segments of second sub-trace portions L, two adjacent segments of second sub-trace portions L are respectively located at two opposite sides of the area where the first groove 201 is located, in other words, the second sub-portion 101b does not extend through the first groove 201, and the second sub-portion 101b avoids the first groove 201, the two adjacent segments of second sub-trace portions L can be electrically connected through the first via 301 and the first sub-portion 101a, that is, the first via 301 and the first sub-portion 101a perform a "bridge crossing" function, and can also be electrically connected through the second via 302 and the third sub-portion 101c, that is, the second via 302 and the third sub-portion 101c perform a "bridge crossing" function.

In some alternative embodiments, referring to fig. 5 and fig. 6, in this embodiment, the organic layer 003 includes at least one second groove 202, the second groove 202 extends along the first direction y, the first groove 201 and the second groove 202 do not overlap in the direction z perpendicular to the flexible substrate, the third sub-portion 101c includes at least two segments of third sub-trace portions H, two adjacent segments of the third sub-trace portions H are respectively located at two opposite sides of the area where the second groove 202 is located, and the third sub-trace portions H and the at least one second sub-trace portion L are electrically connected through the second via 302.

In this embodiment, in order to improve the bending performance of the bending region 10, at least one second groove 202 is disposed in the organic layer 003 in the bending region 10. In fig. 5 and 6, only two second grooves 202 are illustrated as an example. It is understood that the number of the second grooves 202 may be 3 or more, and the embodiment does not specifically limit this.

The first grooves 201 and the second grooves 202 are located at different regions of the display panel, and the first grooves 201 and the second grooves 202 may be staggered.

In addition, the third sub-portion 101c includes at least two segments of third sub-trace portions H, the two adjacent segments of third sub-trace portions H are respectively located at two opposite sides of the area where the second groove 202 is located, in other words, the third sub-portion 101c does not extend through the second groove 202, and the third sub-portion 101c avoids the second groove 202. the two adjacent segments of third sub-trace portions H can be electrically connected through the second via hole 302 and the second sub-trace portion L, i.e., the second via hole 302 and the second sub-trace portion L achieve a "bridge-crossing" effect.

In some alternative embodiments, referring to fig. 7 and fig. 8, the display panel in this embodiment includes a thin film transistor device layer 004, and the thin film transistor device layer 004 includes a gate metal layer 005, a semiconductor layer 006, and a source drain metal layer 007.

In this embodiment, the display panel includes a Thin Film Transistor (TFT) disposed in the TFT device layer 004. The thin film transistor includes a gate electrode disposed on the gate metal layer 005, a semiconductor portion disposed on the semiconductor layer 006, and source and drain electrodes both disposed on the source and drain metal layer 007.

Optionally, with continuing reference to fig. 7 and fig. 8, in the present embodiment, the source/drain metal layer 007 includes the second sub-portion 101 b. In this embodiment, the second sub-portion 101b is located on the source/drain metal layer 007, in other words, the second sub-portion 101b and the source and drain of the thin film transistor may be located in the same film structure and have the same material.

In the manufacturing process of the display panel provided in this embodiment, the second sub-portion 101b, the source and the drain may be formed simultaneously by patterning the same conductive layer in the same manufacturing process, so that there is no need to add an additional process to manufacture the second sub-portion 101b, and there is no need to add an additional material to manufacture the second sub-portion 101b, which is beneficial to improving the manufacturing efficiency of the display panel and reducing the manufacturing cost. In addition, the second sub-portion 101b, the source and the drain are disposed in the same layer, and an additional film structure is not required, which is beneficial to the light and thin of the display panel.

In some optional embodiments, please refer to fig. 7, in this embodiment, the display panel further includes a first conductive layer 008, the first conductive layer 008 is located between the flexible substrate 001 and the tft device layer 004, and the first conductive layer 008 includes the first sub-portion 101 a. In this embodiment, the first conductive layer 008 is disposed between the flexible substrate 001 and the thin film transistor device layer 004, the first conductive layer 008 is made of a conductive material, and the first sub-portion 101a is disposed on the first conductive layer 008, that is, the first sub-portion 101a is a film layer between the flexible substrate 001 and the thin film transistor device layer 004. Optionally, the first conductive layer 008 may be made of a metal material with good conductivity, such as molybdenum, aluminum, and titanium, which is not particularly limited in this embodiment.

In some optional embodiments, with reference to fig. 7, the display panel provided in this embodiment further includes a buffer layer 009, and the buffer layer 009 is located between the first conductive layer 008 and the flexible substrate 001. The buffer layer 009 blocks oxygen and moisture, prevents oxygen, moisture or impurities from diffusing through the flexible substrate base 001, and provides a flat surface, typically an inorganic layer, on the upper surface of the flexible substrate base 001.

In some alternative embodiments, referring to fig. 7 and fig. 8 in combination, in an embodiment, the thin film transistor device layer 004 includes a gate insulating layer 1000 between the gate metal layer 005 and the semiconductor layer 006, and an interlayer insulating layer 1001 between the gate metal layer 005 and the source/drain metal layer 007; the first inorganic layer 002 includes a gate insulating layer 1000 and an interlayer insulating layer 1001. In this embodiment, the gate insulating layer 1000 and the interlayer insulating layer 1001 each include an inorganic material. The gate insulating layer 1000 and the interlayer insulating layer 1001 cover the display area AA and extend into the bending region 10. In order to improve the bending performance of the bending region 10, in the bending region 10, the gate insulating layer 1000 and the interlayer insulating layer 1001 are at least partially etched away to form a first groove 201.

In some alternative embodiments, referring to fig. 7 and fig. 9, in the present embodiment, the tft device layer 004 includes an auxiliary metal layer 1002 and a dielectric insulating layer 1003, the auxiliary metal layer 1002 is located between the dielectric insulating layer 1003 and the interlayer insulating layer 1001, and the dielectric insulating layer 1003 is located between the gate metal layer 005 and the auxiliary metal layer 1002; the first inorganic layer 002 includes a dielectric insulating layer 1003. In this embodiment, the dielectric insulating layer 1003 includes an inorganic material. The dielectric insulating layer 1003 covers the display area AA and extends into the bending region 10. In order to improve the bending performance of the bending region 10, in the bending region 10, the dielectric insulating layer 1003 is at least partially etched away to form the first groove 201.

In some alternative embodiments, referring to fig. 7 and 9, in this embodiment, the display panel further includes a planarization layer 1004 and an Organic light emitting Diode device layer 1005, the planarization layer 1004 is located between the thin film transistor device layer 004 and the Organic light emitting Diode device layer 1005, and the Organic layer 003 includes the planarization layer 1004. in this embodiment, the planarization layer 1004 has an insulating function, and a thicker film layer of the planarization layer 1004 may provide a flatter surface for disposing the Organic light emitting Diode device layer 1005. an Organic light emitting Diode (Organic L bright emitting Diode, abbreviated as O L ED) is disposed in the Organic light emitting Diode device layer 1005, the Organic light emitting Diode includes an anode O L1, a light emitting material portion O L2, and a cathode O L3. the thin film transistor is used for driving the Organic light emitting Diode, and a drain electrode of the thin film transistor is electrically connected to the anode O L1. in the Organic layer 003 includes the planarization layer 1004, and in the bending region 10, the planarization layer 1004 is at least partially etched away to form the second groove 202.

In some optional embodiments, referring to fig. 7 and fig. 10, the display panel provided in this embodiment further includes a touch functional layer 1006 located on a side of the organic light emitting diode device layer 1005 facing away from the flexible substrate 001; the touch function layer 1006 includes a touch electrode 51 and a touch trace 52, and the touch trace 52 is electrically connected to the touch electrode 51; the third sub-portion 101c and the touch trace 52 are made of the same material and are disposed in the same layer. In this embodiment, the touch function layer 1006 may implement a touch function, for example, may sense touch position information and/or touch pressure information of a touch object. The touch electrode 51 and the touch trace 52 are used to implement a touch function, and the embodiment is not limited to specific shapes, sizes, and arrangements of the touch electrode 51 and the touch trace 52. Optionally, in this embodiment, the display panel further includes an encapsulation layer TFE, and the encapsulation layer TFE covers the organic light emitting diode device layer 1005 and is used to protect the organic light emitting diode device layer 1005 and prevent substances such as water vapor, oxygen, and impurities in the air from invading the organic light emitting diode device layer 1005. In the embodiment, the third sub-portion 101c and the touch trace 52 are disposed in the same film structure and made of the same material, and the third sub-portion 101c and the touch trace 52 can be formed simultaneously by patterning the same conductive layer in the same manufacturing process, so that the third sub-portion 101c is manufactured without adding an additional process, and the third sub-portion 101c is manufactured without adding an additional material, which is beneficial to improving the manufacturing efficiency of the display panel and reducing the manufacturing cost. In addition, the third sub-portion 101c and the touch trace 52 are disposed in the same layer, and an additional film structure is not required, which is beneficial to the light and thin of the display panel.

In some optional embodiments, referring to fig. 11, in this implementation, the signal trace S includes at least two first trace portions 101, and the at least two first trace portions 101 are connected in parallel. In fig. 11, only the signal trace S includes three first routing portions 101 as an example for description, it is understood that the specific number of the first routing portions 101 may be set according to the specific setting requirement of the display panel, and the embodiment does not specifically limit this. The signal wire S adopts a mode that at least two first wire parts are connected in parallel, and in the circuit structure, the resistance can be reduced by the parallel structure. Through the parallel structure of the first wiring parts, the resistance is reduced, the power consumption can be reduced, and the heat emitted by components is reduced. At the bending part of the display panel, a plurality of signal wires S with a parallel structure are adopted to form a three-dimensional mesh structure. The three-dimensional net structure of the bending part can greatly improve the bending capability of the display panel.

The invention further provides a display device including the display panel according to any of the embodiments of the invention, and specifically referring to fig. 12, the display device 2000 includes the display panel a according to any of the embodiments of the invention. The embodiment of fig. 12 is only an example of a mobile phone, and the display device 2000 is described, it is understood that the display device provided in the embodiment of the present invention may be other display devices with a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific descriptions of the display panel in the above embodiments may be specifically referred to, and the detailed descriptions of the display panel in the embodiments are omitted here.

As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:

the first routing portion comprises three layers of sub-portions and forms a structure similar to a net, and on one hand, the resistance of the signal routing can be reduced; on the other hand, if one sub-part is broken in the three sub-parts, the signal routing wires can also transmit electric signals through the rest sub-parts, so that the bending resistance of the signal routing wires is improved, the reliability of the display panel is improved, and the yield of the display panel is improved.

In addition, the second sub-portion comprises at least two sections of second sub-routing parts, and the two adjacent sections of second sub-routing parts are respectively located on two opposite sides of the area where the first groove is located. In other words, the second sub-portion does not extend through the first recess, the second sub-portion avoiding the first recess. The two adjacent sections of the second sub-routing portions can be electrically connected through the first via hole and the first sub-portion, namely, the first via hole and the first sub-portion can realize a bridge-crossing function; the second via hole and the third sub-portion can be electrically connected, that is, the second via hole and the third sub-portion can perform a "bridge" function. Compared with the prior art, the signal wiring does not need to be wired from the first groove, so that photoresist residue can be avoided, the short circuit phenomenon caused by electric connection of the signal wiring is avoided, the performance of the signal wiring for transmitting electric signals is improved, and the yield of the display panel is improved. In addition, compared with the prior art, the phenomenon that the signal wiring is easy to break at the side wall of the first groove can be avoided, and the yield of the display panel is further improved.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (12)

1. A display panel, comprising:
a display area and a non-display area; the non-display area comprises a bending area;
the display panel comprises a flexible substrate, a first inorganic layer and an organic layer which are sequentially arranged;
in the bending area, the first inorganic layer comprises at least one first groove, the first groove extends along a first direction, and the organic layer at least fills the first groove;
a plurality of signal wires are arranged on the flexible substrate, each signal wire comprises a first wire routing part positioned in the bending area, and each first wire routing part comprises a first sub-part, a second sub-part and a third sub-part; the first sub-portion is located between the flexible substrate and the first inorganic layer, the second sub-portion is located between the first inorganic layer and the organic layer, and the third sub-portion is located on the side, facing away from the flexible substrate, of the organic layer;
the first direction is crossed with the extending direction of the signal routing;
part of the first sub-part is positioned in the area of the first groove;
the second sub-part comprises at least two sections of second sub-routing parts, and the two adjacent sections of second sub-routing parts are respectively positioned at two opposite sides of the area where the first groove is positioned; the first inorganic layer comprises a first via hole, and at least one second sub-routing part and the first sub-part are electrically connected through the first via hole;
part of the third sub-part is positioned in the area of the first groove; the organic layer includes a second via hole through which the second sub-portion and the third sub-portion are electrically connected.
2. The display panel according to claim 1,
the organic layer comprises at least one second groove extending along the first direction; the first groove and the second groove do not overlap in a direction perpendicular to the flexible substrate base plate;
the third sub-part comprises at least two sections of third sub-routing parts, and the two adjacent sections of third sub-routing parts are respectively positioned at two opposite sides of the area where the second groove is positioned;
the third sub-routing portion and at least one second sub-routing portion are electrically connected through the second via hole.
3. The display panel according to claim 1,
the display panel comprises a thin film transistor device layer, wherein the thin film transistor device layer comprises a grid metal layer, a semiconductor layer and a source drain metal layer.
4. The display panel according to claim 3,
the source drain metal layer includes the second sub-portion.
5. The display panel according to claim 3,
the display panel further includes a first conductive layer between the flexible substrate and the thin film transistor device layer, the first conductive layer including the first sub-portion.
6. The display panel according to claim 5,
the display panel further comprises a buffer layer located between the first conductive layer and the flexible substrate.
7. The display panel according to claim 6,
the thin film transistor device layer comprises a grid electrode insulating layer positioned between the grid electrode metal layer and the semiconductor layer and an interlayer insulating layer positioned between the grid electrode metal layer and the source drain electrode metal layer;
the first inorganic layer includes the gate insulating layer and the interlayer insulating layer.
8. The display panel according to claim 7,
the thin film transistor device layer comprises an auxiliary metal layer and a dielectric insulating layer, the auxiliary metal layer is positioned between the dielectric insulating layer and the interlayer insulating layer, and the dielectric insulating layer is positioned between the grid metal layer and the auxiliary metal layer;
the first inorganic layer includes the dielectric insulating layer.
9. The display panel according to claim 3,
the display panel further comprises a planarization layer and an organic light emitting diode device layer, wherein the planarization layer is positioned between the thin film transistor device layer and the organic light emitting diode device layer;
the organic layer includes the planarization layer.
10. The display panel according to claim 9,
the display panel further comprises a touch control function layer positioned on one side, away from the flexible substrate, of the organic light emitting diode device layer; the touch function layer comprises touch electrodes and touch wires, and the touch wires are electrically connected with the touch electrodes;
the third sub-portion and the touch-control routing are made of the same material and are arranged in the same layer.
11. The display panel according to claim 1,
the signal routing comprises at least two first routing parts which are connected in parallel.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
CN201810161940.7A 2018-02-27 2018-02-27 Display panel and display device CN108417604B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109148541A (en) * 2018-08-30 2019-01-04 上海天马微电子有限公司 Display panel and preparation method thereof and display device
CN109671724B (en) * 2018-12-21 2020-11-24 武汉华星光电半导体显示技术有限公司 Light-emitting panel and display device
CN110047381A (en) * 2019-03-27 2019-07-23 武汉华星光电半导体显示技术有限公司 Display panel and production method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887315A (en) * 2012-12-21 2014-06-25 乐金显示有限公司 Flexible Display Device And Method Of Manufacturing The Same
CN105742330A (en) * 2016-03-16 2016-07-06 京东方科技集团股份有限公司 Organic light emitting display panel, fabrication method thereof and display device
US20170092709A1 (en) * 2015-09-25 2017-03-30 Samsung Display Co., Ltd. Flexible display panel
CN206134682U (en) * 2016-09-28 2017-04-26 厦门天马微电子有限公司 Array substrate and flexible display panel
CN106783917A (en) * 2016-12-15 2017-05-31 武汉华星光电技术有限公司 Flexible display screen structure and preparation method thereof
CN107204357A (en) * 2017-07-05 2017-09-26 武汉华星光电半导体显示技术有限公司 A kind of flexible display panels and preparation method thereof, flexible display apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI582945B (en) * 2016-07-27 2017-05-11 友達光電股份有限公司 Pixel structure and display panel
CN106920829A (en) * 2017-03-30 2017-07-04 京东方科技集团股份有限公司 A kind of preparation method of flexible display panels, display device and flexible display panels
CN107658333A (en) * 2017-10-31 2018-02-02 京东方科技集团股份有限公司 A kind of flexible display panels and its manufacture method, flexible display apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103887315A (en) * 2012-12-21 2014-06-25 乐金显示有限公司 Flexible Display Device And Method Of Manufacturing The Same
US20170092709A1 (en) * 2015-09-25 2017-03-30 Samsung Display Co., Ltd. Flexible display panel
CN105742330A (en) * 2016-03-16 2016-07-06 京东方科技集团股份有限公司 Organic light emitting display panel, fabrication method thereof and display device
CN206134682U (en) * 2016-09-28 2017-04-26 厦门天马微电子有限公司 Array substrate and flexible display panel
CN106783917A (en) * 2016-12-15 2017-05-31 武汉华星光电技术有限公司 Flexible display screen structure and preparation method thereof
CN107204357A (en) * 2017-07-05 2017-09-26 武汉华星光电半导体显示技术有限公司 A kind of flexible display panels and preparation method thereof, flexible display apparatus

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