CN116207101A

CN116207101A - Flexible display panel, display module and electronic equipment

Info

Publication number: CN116207101A
Application number: CN202111443995.5A
Authority: CN
Inventors: 胡海琛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-06-02

Abstract

The invention discloses a flexible display panel, a display module and electronic equipment. The flexible display panel comprises a display part, a connecting part, a bending part, a source drain electrode layer and a monitoring layer. The bending part is connected between the display part and the connecting part, so that the display part is electrically connected with the connecting part through the bending part. The source drain electrode layer at least covers the bending part. The monitoring layer and the source drain electrode layer are arranged on different layers, the monitoring layer and the source drain electrode layer are arranged in an insulating mode, the monitoring layer comprises a monitoring body, the monitoring body at least extends to the bending part from the connecting part, and the monitoring body is used for monitoring stress change of the bending part. The flexible display panel can monitor the stress change of the bending part, avoid or reduce disconnection of the source/drain electrode layer wiring, cause abnormal display of the flexible display panel, and improve the display reliability of the display module and the electronic equipment.

Description

Flexible display panel, display module and electronic equipment

Technical Field

The disclosure relates to the technical field of electronic devices, and in particular relates to a flexible display panel, a display module and electronic equipment.

Background

Electronic devices such as mobile phones and tablet computers have become indispensable technological products in the life, study and entertainment processes of people. At present, electronic devices using flexible display modules have better overall aesthetic properties, and can bring better display experience, so that the electronic devices are more and more favored by consumers. In general, a flexible display panel includes a display portion, a bending portion, and a connection portion, where the display portion is electrically connected to the connection portion through the bending portion, so as to implement electrical signal transmission.

However, in the related art, since the source/drain layer of the bending portion has a bending requirement, the strength of the bending portion is low, and disconnection of the source/drain layer may occur during bending of the bending portion, resulting in abnormal display of the flexible display panel.

Disclosure of Invention

The utility model provides a flexible display panel, display module assembly and electronic equipment can monitor the stress variation of kink, avoids or reduces source drain electrode layer and walks the disconnection, leads to flexible display panel's demonstration unusual, improves display module assembly and electronic equipment's demonstration reliability.

The technical scheme is as follows:

according to a first aspect of embodiments of the present disclosure, there is provided a flexible display panel, including a display portion, a connection portion, a bending portion, a source-drain layer, and a monitoring layer; the bending part is connected between the display part and the connecting part so that the display part is electrically connected with the connecting part through the bending part; the source drain electrode layer at least covers the bending part; the monitoring layer and the source drain electrode layer are arranged on different layers, the monitoring layer and the source drain electrode layer are arranged in an insulating mode, the monitoring layer comprises a monitoring body, the monitoring body at least extends to the bending part from the connecting part, and the monitoring body is used for monitoring stress change of the bending part.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

After the flexible display panel is manufactured, the bending part of the flexible display panel can be bent in bending equipment, and the bending degree can be set by combining the bending degree of the flexible display panel assembled in the electronic equipment. In the bending process, or after the preset bending times are completed, the stress change of the bending part can be monitored by measuring the monitoring body, the risk degree of the breakage of the source and drain electrode layer can be estimated through the stress change, and whether the flexible display panel meets the requirement can be estimated, so that the reliability of the electronic equipment or the display module is prevented from being influenced due to abnormal display of the flexible display panel because of wiring disconnection of the source and drain electrode layer. In addition, the test result can be used for evaluating whether the production process parameters of the flexible display panel need to be adjusted, so that a large number of unqualified flexible display panels are prevented from being produced, and waste is avoided.

The technical scheme of the present disclosure is further described below:

in one embodiment, the monitoring body includes a metal wire, two ends of the metal wire are disposed at the connecting portion, and a portion of the metal wire is disposed at least at the bending portion.

In one embodiment, the source-drain electrode layer is arranged to cover the display portion, at least two metal wires are provided, at least one metal wire is arranged at the edge of the bending portion and is arranged to be close to the display portion, and at least one metal wire is arranged to surround the edge of the bending portion and the edge of the display portion.

In one embodiment, the flexible display panel includes a detection circuit unit for generating a bright line of the flexible display panel when the bending portion generates a crack, and the monitor is electrically connected to the detection circuit unit.

In one embodiment, the monitoring body includes a connection wire, one end of the connection wire is disposed at the connection portion, the other end of the connection wire is electrically connected to the detection circuit unit, and at least a portion of the connection wire is disposed at the bending portion.

In one embodiment, the source-drain electrode layer is arranged to cover the display portion, the number of the connecting lines is at least two, at least two connecting lines are arranged at intervals, and part of the connecting lines are arranged on the display.

In one embodiment, the strength of the monitor is equal to or less than the strength of the source-drain layer.

In one embodiment, the monitoring layer is disposed above and/or below the source/drain layer.

In one embodiment, the flexible display panel further includes:

the first grid metal layer is arranged in an insulating mode with the source drain electrode layer and below the source drain electrode layer, the first grid metal layer is arranged on the inner side of the bending part, and the monitoring layer and the first grid metal layer are arranged on the same layer.

In one embodiment, the monitor layer is integrally formed with the first gate metal layer.

In one embodiment, the flexible display panel further includes:

the first capacitance metal layer is arranged in an insulating mode with the source drain electrode layer and below the source drain electrode layer, the first capacitance metal layer is arranged on the inner side of the bending part, and the monitoring layer and the first capacitance metal layer are arranged on the same layer.

In one embodiment, the monitoring layer is integrally formed with the first capacitive metal layer.

In one embodiment, the flexible display panel further includes:

the touch panel body is arranged above the source drain electrode layer in an insulating mode, the touch panel body is arranged on the outer side of the bending part, and the monitoring layer is arranged on the touch panel body.

In one embodiment, a touch pad body includes: the monitoring layer and the second gate metal layer are arranged on the same layer; and/or the second capacitance metal layer, the monitoring layer and the second capacitance metal layer are arranged on the same layer.

According to a second aspect of the embodiments of the present disclosure, there is further provided a display module, including a substrate, a polarizer, and a flexible display panel in any of the foregoing embodiments, where the substrate includes a front surface, the flexible display panel is disposed on the front surface, and the polarizer is disposed above the flexible display panel.

the display module is applied to the flexible display panel, and the monitoring body of the monitoring layer is utilized for monitoring in the production process of the flexible display panel, so that the wire breakage of the source/drain electrode layer can be avoided or reduced, the display quality of the flexible display panel is guaranteed, and the display reliability of the electronic equipment or the display module is improved. The flexible display panel is fixed through the substrate to display colors, and the display quality is improved through the polaroid, so that the display module has good display quality and display reliability.

According to a third aspect of the embodiments of the present disclosure, there is further provided an electronic device, including a housing assembly and the display module, where the display module is fixedly disposed on the housing assembly.

the electronic equipment is provided with the display module, has good display quality and display reliability, and further can improve the display reliability of the electronic equipment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and their description are given by way of illustration and not of limitation.

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of an electronic device in an embodiment.

Fig. 2 is a schematic cross-sectional view of the display module of the electronic device shown in fig. 1 in a width direction.

Fig. 3 is a schematic cross-sectional view of the flexible display panel shown in fig. 2.

Fig. 4 is a schematic cross-sectional view of a flexible display panel in another embodiment.

Fig. 5 is a front view schematically showing the flexible display panel shown in fig. 4.

Fig. 6 is a schematic cross-sectional view of a flexible display panel in another embodiment.

Fig. 7 is a front view schematically showing the flexible display panel shown in fig. 6.

Fig. 8 is a schematic diagram of an internal hardware structure of the electronic device shown in fig. 1.

Reference numerals illustrate:

10. an electronic device; 11. a processing assembly; 12. a memory; 13. a power supply assembly; 14. a multimedia component; 15. an audio component; 16. an input/output interface; 17. a sensor assembly; 18. a communication component; 100. a display module; 110. a flexible display panel; 101. a display unit; 102. a connection part; 103. a bending part; 111. a source/drain layer; 112. monitoring a layer; 104. a monitoring body; 104a, metal lines; 104b, connecting wires; 113. an insulating layer; 114. a first gate metal layer; 115. a first capacitor metal layer; 116. a detection circuit unit; 117. a touch panel body; 117a, a second gate metal layer; 117b, a second capacitive metal layer; 118. a driving circuit; 120. a substrate; 121. a front face; 122. a back surface; 130. a polarizer; 140. a light-transmitting adhesive; 150. a flexible cover plate; 160. a shielding layer; 170. a protective layer; 200. a housing assembly; 210. a protective space; 300. and a control module.

Detailed Description

For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the drawings and specific language will be used to describe the same. It should be understood that the detailed description is presented herein only to illustrate the present disclosure and not to limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Electronic devices such as mobile phones and tablet computers are indispensable scientific and technological products in the life, study and entertainment processes of people, and bring convenience and fun to the life of people. Along with the development of diversification of functions of electronic devices, the electronic devices are various in variety and brands, so that consumers can select many electronic devices, the requirements of people on the electronic devices cannot be met only by improving the functional characteristics of the electronic devices, and the reliability of the electronic devices is also an important factor affecting the competitiveness of electronic products. In electronic devices with similar functions or performances, the higher the reliability of the electronic device, the more attractive the consumer can purchase.

As the application of the display module is more mature, the application of the display module on the electronic equipment is more extensive. The electronic device using the flexible display module has better overall aesthetic property, and can bring better display experience, so that the electronic device is more and more favored by consumers.

In the related art, the flexible display module assembly includes a flexible display panel, the flexible display panel includes a display portion, a bending portion and a connection portion, and the display portion is electrically connected with the connection portion through the bending portion, so as to realize electric signal transmission. However, the source and drain layers of the bending part have bending requirements, so that the strength of the bending part is low, and disconnection of the source and drain layer wires can occur when the bending part bends, so that abnormal display of the flexible display panel is caused.

Based on this, it is necessary to provide a flexible display panel, which can monitor the stress variation of the bending portion, avoid or reduce the disconnection of the source/drain layer wiring, and cause abnormal display of the flexible display panel, and improve the display reliability of the display module and the electronic device.

In order to better understand the flexible display panel and the display module of the present disclosure, an electronic device to which the flexible display panel and the display module are applied will be described.

As shown in fig. 1 and 2, some embodiments of the electronic device and the display module thereof are shown in structural views. Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment. Fig. 2 is a schematic cross-sectional view of the display module of the electronic device shown in fig. 1 in a width direction.

As shown in fig. 1 and fig. 2, in some embodiments, an electronic device 10 is provided, which includes a housing assembly 200 and the display module 100, wherein the display module 100 is fixedly disposed on the housing assembly 200. The display module 100 includes a substrate 120, a polarizer 130, and a flexible display panel 110 capable of monitoring stress changes of the bending portion 103 and avoiding or reducing disconnection of the source/drain layer 111, wherein the substrate 120 includes a front 121, the flexible display panel 110 is disposed on the front 121, and the polarizer 130 is disposed above the flexible display panel 110.

The display module 100 employs the flexible display panel 110, and in the production process of the flexible display panel 110, the stress change of the bending part 103 can be monitored in time, so that the wire breakage of the source/drain electrode layer 111 is avoided or reduced, the display quality of the flexible display panel 110 is ensured, and the display reliability of the electronic device 10 or the display module 100 is improved. The flexible display panel 110 is fixed by the substrate 120 to display color, and the polarizer 130 is used to improve the display quality, so that the display module 100 has good display quality and display reliability, and further the display reliability of the electronic device 10 can be improved.

Further, as shown in fig. 3-5, are structural views of the flexible display panel shown in some embodiments. Fig. 3 is a schematic cross-sectional view of the flexible display panel shown in fig. 2. Fig. 4 is a schematic cross-sectional view of a flexible display panel in another embodiment. Fig. 5 is a front view schematically showing the flexible display panel shown in fig. 4.

As shown in fig. 3 to 5, in some embodiments, a flexible display panel 110 is provided, which includes a display portion 101, a connection portion 102, a bending portion 103, a Source Drain layer 111 (english: source Drain; abbreviated as SD), and a monitor layer 112; the bending part 103 is connected between the display part 101 and the connecting part 102, so that the display part 101 is electrically connected with the connecting part 102 through the bending part 103; the source-drain layer 111 at least covers the bending part 103, the monitoring layer 112 and the source-drain layer 111 are arranged on different layers, the monitoring layer 112 and the source-drain layer 111 are arranged in an insulating manner, the monitoring layer 112 comprises a monitoring body 104, the monitoring body 104 extends from the connecting part 102 to the bending part 103 at least, and the monitoring body 104 is used for monitoring stress change of the bending part 103.

Thus, after the flexible display panel 110 is manufactured, the bending portion 103 can be bent in the bending device, and the bending degree can be set in combination with the bending degree of the flexible display panel 110 assembled in the electronic device 10. In the bending process, or after the preset bending times are completed, the stress variation of the bending portion 103 can be monitored by measuring the monitoring body 104, and the risk degree of the breakage of the source/drain electrode layer 111 can be evaluated by the stress variation, so that whether the flexible display panel 110 meets the requirement can be evaluated, and the reliability of the electronic device 10 or the display module 100 is prevented from being influenced due to abnormal display of the flexible display panel 110 caused by disconnection of the source/drain electrode layer 111. In addition, the test result can be used for evaluating whether the production process parameters of the flexible display panel 110 need to be adjusted, so that a large number of unqualified flexible display panels 110 are avoided to be produced, and waste is avoided.

Specifically, for example, the test result indicates that the monitor 104 is not broken, and it is also possible to predict that the trace of the source/drain layer 111 is not broken, and at this time, the process parameters of the flexible display panel 110 need not be adjusted. For example, a part of the test results show that the monitor 104 is not broken, while a part of the test results show that the monitor 104 is broken, the breaking trend is worsening, so that the risk of breaking the trace of the source/drain electrode layer 111 can be estimated, the process parameters of the flexible display panel 110 can be calculated and adjusted, the continuous deterioration is avoided, the source/drain electrode layer 111 is finally cracked, a large number of display anomalies of the flexible display panels 110 are caused, and the flexible display panels 110 of the batch are failed to cause waste. For example, if the test result shows that the monitor 104 is continuously broken, the risk of the broken wires of the source/drain layer 111 is high or the monitor is broken, and the process parameters of the flexible display panel 110 can be calculated and adjusted to avoid or reduce abnormal display of the flexible display panel 110 caused by the broken wires of the source/drain layer 111, thereby causing the unqualified flexible display panels 110 of the batch to be wasted.

In addition, the monitor layer 112 and the source drain layer 111 are disposed on different layers, so that the process parameters of the flexible display panel 110 can be adjusted by using the fracture condition of the monitor layer 112 before the stress change occurs on the source drain layer 111, so that the stress change of the flexible display panel 110 at the bending portion 103 before the process parameters of the flexible display panel 110 are adjusted can be ensured as much as possible, the source drain layer 111 is not broken, and the display quality of the flexible display panel 110 is ensured. That is, the monitoring layer 112 is utilized to perform advance judgment to reduce waste.

The drain-source layer covering the bent portion 103 is mainly used as a signal line connecting the display portion 101 and the connection portion 102 on both sides of the bent portion 103.

In some embodiments, the drain-source layer also covers the display portion 101, that is, may extend from the bending portion 103 into the display portion 101 for implementing electrical signal transmission.

It should be noted that, the insulating arrangement of the monitoring layer 112 and the source/drain layer 111 may have various ways, including but not limited to isolation by the insulating layer 113.

Based on any of the above embodiments, in some embodiments, the monitoring layer 112 is disposed above and/or below the source/drain layer 111. Thus, in some cases, the stress variation of the bending portion 103 will preferentially occur above the source/drain layer 111, and then the monitoring layer 112 is disposed above the source/drain layer 111, so that the stress variation occurring above the source/drain layer 111 can be known in time, and the test result can be adjusted in time; or, in some cases, the stress variation of the bending portion 103 will preferentially occur below the source/drain layer 111, so that the monitoring layer 112 is disposed below the source/drain layer 111, so that the stress variation occurring below the source/drain layer 111 can be known in time, and the test result can be adjusted in time; or, the monitoring layer 112 is disposed above and below the source/drain layer 111, so that the stress variation occurring above and below the source/drain layer 111 can be known in time, and the test result can be adjusted in time, so that the source/drain layer 111 is disposed between the two monitoring layers 112, so as to ensure the monitoring effect.

Based on any of the above embodiments, as shown in fig. 3 or fig. 4, in some embodiments, the monitoring layer 112 is disposed below the source/drain layer 111.

Further, as shown in fig. 3, in some embodiments, the flexible display panel 110 further includes a first gate metal layer 114, where the first gate metal layer 114 is disposed under the source/drain layer 111 in an insulating manner, the first gate metal layer 114 is disposed inside the bend of the bend portion 103, and the monitoring layer 112 and the first gate metal layer 114 are disposed on the same layer. In this way, the monitoring layer 112 can be disposed on the same layer as the first gate metal layer 114, so that the monitoring layer 112 is disposed below the source/drain layer 111 without increasing the thickness of the flexible display panel 110. In addition, the monitoring layer 112, the first gate metal layer 114 and the source drain layer 111 can be insulated by using the same insulating layer 113.

In some embodiments, the monitor layer 112 is integrally formed with the first gate metal layer 114. In this way, the monitor layer 112 and the first gate metal layer 114 can be integrally formed by using a pattern etching technique, a deposition technique, etc., so that the manufacturing process of the flexible display panel 110 is not increased, and the production cost is reduced as much as possible. For example, the monitor layer 112 and the first gate metal layer 114 are simultaneously obtained by chemical etching using one metal sheet (e.g., copper foil, aluminum foil, iron foil, silver foil, etc.).

As shown in fig. 4, in other embodiments, the flexible display panel 110 further includes a first capacitor metal layer 115, where the first capacitor metal layer 115 is disposed under the source/drain layer 111 and insulated from the source/drain layer 111, the first capacitor metal layer 115 is disposed inside the bend of the bend portion 103, and the monitoring layer 112 and the first capacitor metal layer 115 are disposed on the same layer. In this way, the monitoring layer 112 and the first capacitor metal layer 115 can be disposed on the same layer, so that the monitoring layer 112 is disposed below the source/drain layer 111 without increasing the thickness of the flexible display panel 110. In addition, the monitoring layer 112, the first capacitance metal layer 115 and the source drain layer 111 can be insulated by using the same insulating layer 113.

In some embodiments, the monitor layer 112 is integrally formed with the first capacitive metal layer 115. In this way, the monitoring layer 112 and the first capacitor metal layer 115 can be integrally formed by using a pattern etching technique, a deposition technique, etc., so that the manufacturing process of the flexible display panel 110 is not increased, and the production cost is reduced as much as possible. For example, the monitoring layer 112 and the first capacitance metal layer 115 are simultaneously obtained by chemical etching using one metal sheet (e.g., copper foil, aluminum foil, iron foil, silver foil, etc.).

In combination with the foregoing embodiment, one monitor layer 112 is disposed in the same layer as the first gate metal layer 114, and one monitor layer 112 is disposed in the same layer as the first capacitor metal layer 115, so as to form at least two monitor layers 112 under the source/drain layer 111, thereby improving the effect of performing stress variation on the bending portion 103 under the source/drain layer 111.

On the basis of any of the above embodiments, as shown in fig. 5, in some embodiments, the monitoring body 104 includes a metal wire 104a, two ends of the metal wire 104a are disposed at the connection portion 102, and at least a portion of the metal wire 104a is disposed at the bending portion 103. In this way, when the resistance test is performed on both ends of the metal wire 104a, the resistance becomes very large (the metal wire 104a is partially broken) or infinite (the metal wire 104a is completely broken), so that the fracture condition of the monitoring body 104 can be easily monitored in a resistance test mode, and the stress change condition of the bending portion 103 can be further determined.

In addition, the connection portions 102 are provided at both ends of the metal wire 104a, so that resistance detection is facilitated.

It should be noted that the number of the metal wires 104a includes more than one, and may be specifically selected according to practical situations, for example, the larger the area of the flexible display panel 110 is, the more the number of the metal wires 104a is to ensure the monitoring effect. The number of the metal lines 104a is 1, 2, 3 or … …

As shown in fig. 5, in some embodiments, the source-drain layer 111 is disposed to cover the display portion 101, at least two metal wires 104a are disposed at the edge of the bending portion 103 and is disposed against the display portion 101, and at least one metal wire 104a is disposed around the edge of the bending portion 103 and the edge of the display portion 101. In this way, at least one metal wire 104a is arranged around the edge of the bending part 103 and the edge of the display part 101, and the stress change of the display part 101 and the bending part 103 can be judged, so that the stress change condition of the periphery of the flexible display panel 110 and the bending part 103 can be rapidly detected, and when the resistance data of the metal wire 104a fluctuates, the actual sample can be further analyzed.

The term "abutting" includes one of a bonding state and an approaching state.

Based on any of the above embodiments, in some embodiments, the strength of the monitor 104 is equal to or less than the strength of the source/drain layer 111. In this way, the stress change of the bending part 103 can be predicted more accurately, so that the process parameters of the flexible display panel 110 can be adjusted by utilizing the fracture condition of the monitoring layer 112 before the stress change occurs in the source/drain electrode layer 111, the stress change of the bending part 103 of the flexible display panel 110 before the process parameters of the flexible display panel 110 are adjusted is ensured not to fracture the source/drain electrode layer 111, and the display quality of the flexible display panel 110 is further ensured. That is, the advanced pre-determination is reliably performed by the monitoring layer 112 to reduce waste.

Based on any of the above embodiments, as shown in fig. 6, in some embodiments, the flexible display panel 110 further includes a touch panel body 117, where the touch panel body 117 is disposed above the source drain layer 111 in an insulating manner, the touch panel body 117 is disposed outside the bend of the bending portion 103, and the monitoring layer 112 is disposed on the touch panel body 117. In this way, the monitoring layer 112 can be disposed on the touch pad 117, so that the monitoring layer 112 is disposed above the source/drain layer 111, and the number of insulating layers 113 is reduced. In addition, the insulating layer 113 is only required to be used to insulate the touch pad body 117 from the source/drain layer 111, and the insulating layer 112 is required to insulate the monitoring layer 112 from the source/drain layer 111.

In addition, the flexible display panel 110 is provided with a touch pad body 117, and the display module 100 may be implemented as a touch screen to receive an input signal from a user. The touch pad body 117 includes one or more touch sensors to sense touches, swipes, and gestures on the touch pad body 117. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation.

As shown in fig. 6, in some embodiments, the touch pad body 117 includes a second gate metal layer 117a, and the monitor layer 112 is disposed on the same layer as the second gate metal layer 117 a; and/or touch pad body 117 includes a second capacitive metal layer 117b, monitor layer 112 being co-located with second capacitive metal layer 117 b. In this way, the monitor layer 112 and the second gate metal layer 117a can be disposed on the same layer, so that the monitor layer 112 is disposed above the source/drain layer 111 without increasing the thickness of the flexible display panel 110. In addition, the monitoring layer 112, the second gate metal layer 117a and the source drain layer 111 can be insulated by the same insulating layer 113. And/or the monitoring layer 112 may be disposed on the same layer as the second capacitance metal layer 117b, so that the monitoring layer 112 is disposed above the source/drain layer 111 without increasing the thickness of the flexible display panel 110. In addition, the insulating arrangement of the monitoring layer 112, the second capacitance metal layer 117b and the source drain layer 111 can be realized by using the same insulating layer 113

In combination with the foregoing embodiment, one monitor layer 112 is disposed in the same layer as the second gate metal layer 117a, and one monitor layer 112 is disposed in the same layer as the second capacitor metal layer 117b, so as to form at least two monitor layers 112 over the source/drain layer 111, so as to improve the effect of performing stress variation on the bending portion 103 over the source/drain layer 111.

Similarly, in some embodiments, the monitor layer 112 is integrally formed with the second gate metal layer 117a. In this way, the monitor layer 112 and the second gate metal layer 117a can be formed integrally by using a pattern etching technique, a deposition technique, etc., without increasing the manufacturing process of the flexible display panel 110, and reducing the production cost as much as possible. For example, the monitor layer 112 and the second gate metal layer 117a are simultaneously obtained by chemical etching using one metal sheet.

In some embodiments, the monitor layer 112 is integrally formed with the second capacitive metal layer 117b. In this way, the monitor layer 112 and the second capacitor metal layer 117b can be integrally formed by using a pattern etching technique, a deposition technique, etc., without increasing the manufacturing process of the flexible display panel 110, and reducing the production cost as much as possible. For example, the monitor layer 112 and the second capacitance metal layer 117b are obtained simultaneously by chemical etching using one metal sheet.

On the basis of any of the above embodiments, as shown in fig. 7, in some embodiments, the flexible display panel 110 includes a detection circuit unit 116 for generating a bright line on the flexible display panel 110 when the bending portion 103 generates a crack, and the monitor 104 is electrically connected to the detection circuit unit 116. In this way, through the electrical connection between the monitor 104 and the detection circuit unit 116, when the stress of the bending portion 103 changes, and the crack occurs in the monitor 104, the detection circuit unit 116 can make the flexible display panel 110 generate a bright line, so that the fracture condition of the monitor 104 can be monitored in a bright line test mode, and the stress change condition of the bending portion 103 can be further determined.

The "detection circuit unit 116" is a CT (CELL TEST) detection circuit unit 116.

Specifically, the detection circuit unit 116 may introduce the external power supply voltage input by the external power supply voltage input end into the monitor 104, so that the voltage on the signal line shorted with the monitor 104 is pulled down or pulled up according to the magnitude of the external power supply voltage, so that the voltage on the signal line is significantly different from the voltages on the other signal lines, that is, the display of the pixel unit corresponding to the signal line will be significantly different from the display of the pixel unit corresponding to the other signal lines, so that it may be determined that the bright line determination is achieved.

Further, in some embodiments, the monitoring body 104 includes a connection wire 104b, one end of the connection wire 104b is disposed at the connection portion 102, the other end is electrically connected to the detection circuit unit 116, and at least a portion of the connection wire 104b is disposed at the bending portion 103. In this way, connection with the detection circuit unit 116 is facilitated by the connection wire 104b, and wiring is also facilitated in the region of the bending portion 103, so as to monitor the stress variation of the bending portion 103.

As shown in fig. 7, in some embodiments, the source-drain layer 111 is disposed to cover the display portion 101, at least two connection lines 104b are disposed at intervals, and a portion of the connection lines 104b are disposed on the display device. In this way, the stress changes in the display portion 101 and the bending portion 103 can be determined, the stress change conditions of the periphery of the flexible display panel 110 and the bending portion 103 can be rapidly detected, and when the connecting line 104b breaks and a bright line appears, the actual sample can be further analyzed.

The above-described resistance detection method of the metal line 104a and the bright line detection method of the detection circuit unit 116 may be disposed above and/or below the source/drain layer 111, and are not limited thereto.

In addition to the features of the above embodiments, the flexible display panel 110 generally includes pixel circuits and the like, which are not described here.

As shown in fig. 7, in some embodiments, the flexible display panel 110 further includes a driving circuit 118 for driving the display portion 101 to display and controlling the driving current. The driving circuit 118 is a main part of the imaging system of the flexible display panel 110, and is a component integrating resistors, regulators, comparators, power transistors, and the like.

Referring back to fig. 2, in some embodiments, the electronic device 10 further includes a control module 300, and the connection portion 102 is electrically connected to the control module 300. Therefore, the connection portion 102 is convenient to be electrically connected with the control module 300 (such as a main control board), so as to control the display panel, and meanwhile, the assembly is convenient to carry out modularized assembly, and the assembly efficiency is improved.

Specific implementations of the connection 102 include flexible circuit boards and the like.

The control module comprises a main control chip, wherein the main control chip comprises a processor, and the processor can be a Micro-controller Unit (MCU), a central processing Unit (Central Processing Unit, CPU) or a digital signal processor (Digital Signal Processor, DSP) and the like, and in addition, the control module further comprises a communication Unit for communicating with other modules of the electronic equipment, such as a display module of the disclosure.

In order to further improve the display quality and the reliability, the display module can be further assembled to obtain better display effect and protection effect. As shown in fig. 2, in an embodiment, the display module 100 further includes a transparent adhesive 140 and a flexible cover 150, and the flexible cover 150 is disposed on the polarizer 130 through the transparent adhesive 140. In this manner, display quality may be further improved, and the flexible display panel 110 may be protected by the flexible cover plate 150.

Specific embodiments of the light-transmitting glue 140 include OCA (Optically Clear Adhesive) and the like.

The housing assembly 200 includes at least one of a center frame, a battery rear cover, a front cover, and the like.

As shown in fig. 2, in some embodiments, the flexible cover plate 150 and the housing assembly 200 cooperate to form a protective space 210, and the electrical portion of the display module can be disposed in the protective space 210 to improve the protective performance of the electronic device 10.

Based on any of the above embodiments, as shown in fig. 2, in an embodiment, the back surface 122 of the substrate 120 is further provided with a shielding layer 160. Thus, electromagnetic interference can be reduced by using the shielding layer 160, and the anti-interference capability of the display module is improved.

The shielding layer 160 includes a plated metal layer or a rolled metal layer. Such as coated copper or rolled metallic copper.

And/or, as shown in fig. 2, in an embodiment, the back surface 122 of the substrate 120 is provided with a protective layer 170. Thus, the pressure received by the display module can be buffered by the protective layer 170, so as to improve the display reliability of the display module.

Optionally, in an embodiment, the protective layer includes a foam layer, a mesh glue layer disposed between the foam layer and the back surface, and an engineering film disposed between the foam layer and the shielding layer. Therefore, the impact force is buffered by utilizing the replaceable foam layer, the foam layer can be reliably fixed on the back of the substrate by utilizing the grid adhesive layer, and the arrangement of the engineering film is also beneficial to fixing the calendaring metal layer on the foam layer.

The engineering film comprises polyimide film and the like.

The electronic device 10 may include a handheld device, a vehicle mount device, a wearable device, a monitoring device, a cellular phone (cellular phone), a smart phone (smart phone), a personal digital assistant (personal digital assistant, PDA) computer, a tablet computer, a laptop computer (laptop), a video camera, a video recorder, a camera, a smart watch (smart watch), a smart bracelet (smart wstband), a vehicle mount computer, and other electronic devices 10 having imaging capabilities.

It can be appreciated that applying the technology of the present disclosure may increase the technological sense of the electronic device 10, bring more advanced consumption experience to people, and make consumers feel the mind of the manufacturer, so as to improve the product competitiveness of the electronic device 10 of the present disclosure. If the electronic device 10 is a handheld device (such as a mobile phone or a tablet computer), the display module 100 can form a curved display effect on two sides of the middle frame, so as to bring a display effect of borderless display, and no display difference exists, so that the whole display quality is better. Meanwhile, the palm of the user can often contact the curved surface, so that better holding experience can be brought.

Further, as shown in fig. 8, a schematic diagram of the internal hardware structure of the electronic device in an embodiment is shown.

Referring to fig. 8, in some embodiments, the electronic device 10 may further include one or more of the following components: a processing component 11, a memory 12, a power supply component 13, a multimedia component 14, an audio component 15, an input/output interface 16, a sensor component 17, and a communication component 18.

The processing component 11 generally controls overall operation of the electronic device 10, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 11 may include one or more processors 1020 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 11 may include one or more modules that facilitate interactions between the processing component 11 and other components. For example, the processing component 11 may include a multimedia module to facilitate interaction between the multimedia component 14 and the processing component 11, such as a host chip.

The memory 12 is configured to store various types of data to support operations at the electronic device 10. Examples of such data include instructions for any application or method operating on the electronic device 10, contact data, phonebook data, messages, pictures, video, and the like. The memory 12 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, etc.

The power supply assembly 13 provides power to the various components of the electronic device 10. Power supply components 13 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for electronic device 10.

The multimedia assembly 14 includes a display module 100 of the present disclosure to facilitate human-machine interaction. For example, the flexible display panel includes a touch pad body, and the display module may be implemented as a touch screen to receive an input signal from a user. The touch pad body includes one or more touch sensors to sense touches, swipes, and gestures on the touch pad body. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia assembly 14 includes a front camera and/or a rear camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the electronic device 10 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 15 is configured to output and/or input audio signals. For example, the audio component 15 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 10 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 12 or transmitted via the communication component 18. In some embodiments, the audio assembly 15 further comprises a speaker for outputting audio signals.

The input/output interface 16 provides an interface between the processing assembly 11 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 17 includes one or more sensors for providing status assessment of various aspects of the electronic device 10. For example, the sensor assembly 17 may detect an on/off state of the electronic device 10, a relative positioning of the components, such as a display and keypad of the electronic device 10, the sensor assembly 17 may also detect a change in position of the electronic device 10 or a component of the electronic device 10, the presence or absence of a user's contact with the electronic device 10, an orientation or acceleration/deceleration of the electronic device 10, and a change in temperature of the electronic device 10. The sensor assembly 17 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 17 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 17 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 18 is configured to facilitate communication between the electronic device 10 and other devices, either wired or wireless. The electronic device 10 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 18 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 18 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first," "second," etc. can include at least one such feature, either explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "mounted," "positioned," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as being "fixedly connected" to another element, the two elements may be fixed by a detachable connection manner, or may be fixed by a non-detachable connection manner, such as sleeving, clamping, integrally forming, or welding, which may be implemented in the conventional technology, which is not further described herein.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples merely represent several embodiments of the present disclosure, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concepts of the present disclosure, which are within the scope of the present disclosure.

Claims

1. A flexible display panel, comprising:

a display unit;

a connection part;

the bending part is connected between the display part and the connecting part so that the display part is electrically connected with the connecting part through the bending part;

the source-drain electrode layer at least covers the bending part; and

the monitoring layer is arranged on different layers with the source drain electrode layer, the monitoring layer is arranged in an insulating mode with the source drain electrode layer, the monitoring layer comprises a monitoring body, the monitoring body extends to the bending part at least from the connecting part, and the monitoring body is used for monitoring stress change of the bending part.

2. The flexible display panel according to claim 1, wherein the monitor includes a metal wire, the two ends of the metal wire are disposed at the connection portion, and the portion of the metal wire is disposed at least at the bending portion.

3. The flexible display panel according to claim 2, wherein the source/drain layer is disposed to cover the display portion, the at least two metal wires are disposed at edges of the bending portion and are disposed to abut against the display portion, and the at least one metal wire is disposed around the edges of the bending portion and the edges of the display portion.

4. A flexible display panel according to any one of claims 1 to 3, wherein the flexible display panel includes a detection circuit unit for causing the flexible display panel to generate a bright line when the bending portion generates a crack, and the monitor is electrically connected to the detection circuit unit.

5. The flexible display panel according to claim 4, wherein the monitor includes a connection wire, one end of the connection wire is disposed at the connection portion, the other end of the connection wire is electrically connected to the detection circuit unit, and a portion of the connection wire is disposed at least at the bending portion.

6. The flexible display panel according to claim 5, wherein the source/drain layer is disposed to cover the display portion, at least two of the connection lines are disposed at intervals, and a portion of the connection lines are disposed on the display portion.

7. The flexible display panel according to claim 1, wherein the strength of the monitor is equal to or less than the strength of the source-drain layer.

8. A flexible display panel according to claim 1, wherein the monitoring layer is arranged above and/or below the source drain layer.

9. The flexible display panel according to any one of claims 1 to 8, further comprising:

the first grid metal layer is arranged in an insulating mode with the source drain electrode layer, and is arranged below the source drain electrode layer, the first grid metal layer is arranged on the inner side of the bending part, and the monitoring layer and the first grid metal layer are arranged on the same layer.

10. The flexible display panel of claim 9, wherein the monitor layer is integrally formed with the first gate metal layer.

11. The flexible display panel according to any one of claims 1 to 8, further comprising:

the first capacitor metal layer is arranged in an insulating mode with the source drain electrode layer, and is arranged below the source drain electrode layer, the first capacitor metal layer is arranged on the inner side of the bending part, and the monitoring layer and the first capacitor metal layer are arranged on the same layer.

12. The flexible display panel of claim 11, wherein the monitor layer is integrally formed with the first capacitive metal layer.

13. The flexible display panel according to any one of claims 1 to 12, further comprising:

The touch panel body is arranged above the source drain electrode layer in an insulating mode, the touch panel body is arranged on the outer side of the bending portion, and the monitoring layer is arranged on the touch panel body.

14. The flexible display panel of claim 13, wherein the touch pad body comprises:

the monitoring layer and the second gate metal layer are arranged on the same layer; and/or

And the monitoring layer and the second capacitance metal layer are arranged on the same layer.

15. A display module comprising a substrate, a polarizer, and the flexible display panel of any one of claims 1 to 14, wherein the substrate comprises a front surface, the flexible display panel is disposed on the front surface, and the polarizer is disposed above the flexible display panel.

16. An electronic device, comprising a housing assembly and the display module of claim 15, wherein the display module is fixedly arranged on the housing assembly.