CN111176383B - Flexible display panel and display device - Google Patents
Flexible display panel and display device Download PDFInfo
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- CN111176383B CN111176383B CN201911420761.1A CN201911420761A CN111176383B CN 111176383 B CN111176383 B CN 111176383B CN 201911420761 A CN201911420761 A CN 201911420761A CN 111176383 B CN111176383 B CN 111176383B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The invention provides a flexible display panel and a display device, wherein a bending detection component is used for detecting the bending state of a bending area, and a preset distance is reserved between a telescopic conductor and an induction electrode when the flexible display panel is in a flat state; when the flexible display panel is bent in the bending area, the telescopic conductor arranged in the bending area extends, and then the extended telescopic conductor is contacted with the sensing electrode, so that the sensing electrode is electrically communicated with the detection electrode, and the sensing electrode generates a sensing signal electrically contacted with the detection electrode; with this, when response electrode and detecting electrode communicate through scalable conductor electricity and acquire the sensing signal, can judge the state of buckling of district of buckling according to the sensing signal, and then realized the detection to the district state of buckling through buckling the detection component, and be convenient for make corresponding control according to the buckling of district.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel and a display device.
Background
With the development of display technology, the demands of consumers for display devices are more and more diversified and personalized. Compared with the traditional display device, the flexible display device has the advantages of being capable of being bent, convenient to carry and the like, and is popular with consumers. Due to the flexible characteristic of the flexible display device, more and more attention is paid to the detection technology of the bending state of the flexible display device. For example, in order to satisfy the requirements of preventing excessive bending and satisfying the user's desire to control the display device by a bending operation, detection of the bending state of the flexible display device is an indispensable technique.
Disclosure of Invention
In view of this, the present invention provides a flexible display panel and a display device, which effectively solve the technical problems in the prior art, and achieve the detection of the bending state of the bending region, so as to facilitate the corresponding control according to the bending of the bending region.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a flexible display panel comprising a bend region;
the flexible display panel further comprises at least one bending detection member, the flexible display panel bends at the bending region, wherein the bending detection member comprises:
a retractable conductor at least partially located in the bending region, wherein in an extending direction of the retractable conductor, an extension length of the retractable conductor increases with a decrease in a bending angle of the retractable conductor along the extending direction; the flexible display panel comprises a first sub display panel and a second sub display panel which are respectively positioned at two sides of the bending area, and the bending angle is an included angle between an extending surface of the first sub display panel to the bending area and an extending surface of the second sub display panel to the bending area; a sensing electrode in contact with the retractable conductor; the induction electrodes and the telescopic conductors are arranged along the extension direction of the telescopic conductors, wherein in the state that the telescopic conductors are unfolded, a first preset distance is formed between the telescopic conductors and the induction electrodes, and the first preset distance is larger than zero; and under the state that the telescopic conductor is bent along the extension direction of the telescopic conductor, the telescopic conductor is contacted with the induction electrode.
Optionally, the retractable conductor includes a first end and a second end that are opposite to each other in an extending direction, and at least the first end of the retractable conductor is provided with the sensing electrode.
Optionally, the sensing electrode includes a plurality of sub-sensing electrodes, and the sub-sensing electrodes are sequentially arranged along the extending direction of the stretchable conductor.
Optionally, in all the sub-sensing electrodes located on the same side of the first end of the stretchable conductor, the distance between two adjacent sub-sensing electrodes gradually decreases from the second end to the first end.
Optionally, the sensing electrode is also disposed at the second end side of the stretchable conductor, all sub-sensing electrodes located at the first end side of the stretchable conductor are first sub-sensing electrodes, and all sub-sensing electrodes located at the second end side of the stretchable conductor are second sub-sensing electrodes;
the sensing electrode group comprises a first sub sensing electrode and a second sub sensing electrode, and the first sub sensing electrode and the second sub sensing electrode in the same sensing electrode group are symmetrically arranged around the telescopic conductor.
Optionally, in the extending direction of the stretchable conductor, the detection electrode is located at the symmetry axis of the stretchable conductor; the axis of symmetry is perpendicular to the direction of extension of the retractable conductor.
Optionally, in the extending direction of the retractable conductor, the first end portion side of the retractable conductor is provided with the sensing electrode, the distance between the detection electrode and the second end portion of the retractable conductor is smaller than the distance between the detection electrode and the first end portion of the retractable conductor, and the second end portion of the retractable conductor is provided with a blocking block.
Optionally, the retaining wall comprises a first retaining wall and a second retaining wall which are oppositely arranged and have the same extending direction; the extension direction of the telescopic conductor is the same as that of the first retaining wall, and the telescopic conductor is arranged in a gap between the first retaining wall and the second retaining wall.
Optionally, the flexible display panel includes a display area and a non-display area, the first retaining wall and the second retaining wall are located in the non-display area on the same side of the display area, and the flexible display panel further includes:
the first retaining wall and the second retaining wall are positioned on one side of the base; and the functional layer is positioned on one side, back to the substrate, of the first retaining wall and the second retaining wall.
Optionally, the stretchable conductor comprises an anisotropic material and conductive particles.
Correspondingly, the invention further provides a display device which comprises the flexible display panel.
Compared with the prior art, the technical scheme provided by the invention at least has the following advantages:
the invention provides a flexible display panel and a display device, wherein the flexible display panel comprises a bending area; the flexible display panel further comprises at least one bending detection member, the flexible display panel bends at the bending region, wherein the bending detection member comprises: a retractable conductor at least partially located in the bending region, wherein in an extending direction of the retractable conductor, an extension length of the retractable conductor increases with a decrease in a bending angle of the retractable conductor along the extending direction; the flexible display panel comprises a first sub display panel and a second sub display panel which are respectively positioned at two sides of the bending area, and the bending angle is an included angle between an extending surface of the first sub display panel to the bending area and an extending surface of the second sub display panel to the bending area; a sensing electrode in contact with the retractable conductor; the induction electrodes and the telescopic conductors are arranged along the extension direction of the telescopic conductors, wherein in the state that the telescopic conductors are unfolded, a first preset distance is formed between the telescopic conductors and the induction electrodes, and the first preset distance is larger than zero; and under the state that the telescopic conductor is bent along the extension direction of the telescopic conductor, the telescopic conductor is contacted with the induction electrode.
As can be seen from the above, in the technical solution provided by the present invention, the bending detection component is used for detecting the bending state of the bending region, wherein, when the flexible display panel is in the flat state, a preset distance is provided between the stretchable conductor and the sensing electrode; when the flexible display panel is bent in the bending area, the telescopic conductor arranged in the bending area extends, and then the extended telescopic conductor is contacted with the sensing electrode, so that the sensing electrode is electrically communicated with the detection electrode, and the sensing electrode generates a sensing signal electrically contacted with the detection electrode; with this, when response electrode and detecting electrode communicate through scalable conductor electricity and acquire the sensing signal, can judge the state of buckling of district of buckling according to the sensing signal, and then realized the detection to the district state of buckling through buckling the detection component, and be convenient for make corresponding control according to the buckling of district.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background art, compared to the conventional display device, the flexible display device has the advantages of being bendable and portable, and is popular with consumers. Due to the flexible characteristic of the flexible display device, more and more attention is paid to the detection technology of the bending state of the flexible display device. For example, in order to satisfy the requirements of preventing excessive bending and satisfying the user's desire to control the display device by a bending operation, detection of the bending state of the flexible display device is an indispensable technique.
Based on the above, the invention provides a flexible display panel and a display device, which effectively solve the technical problems in the prior art, realize the detection of the bending state of the bending area, and facilitate the corresponding control according to the bending of the bending area. In order to achieve the above object, the technical solutions provided by the present invention are described in detail below, specifically with reference to fig. 1 to 12.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of another flexible display panel according to an embodiment of the present invention, and fig. 2 and fig. 3 may be sectional views of the display panel in a BB' direction of fig. 1 when the display panel is in a flattened state and a bent state. Wherein, the flexible display panel 10 includes a bending region 11;
the flexible display panel 10 further comprises at least one bending detection member, the flexible display panel bends at the bending area 11, wherein the bending detection member comprises:
the retractable conductor 100, the retractable conductor 100 is at least partially located in the bending region 11, and in the extending direction X of the retractable conductor 100, the extending length of the retractable conductor 100 increases with the decrease of the bending angle of the retractable conductor 100 along the extending direction X; the flexible display panel comprises a first sub display panel 12 and a second sub display panel 13 which are respectively positioned at two sides of a bending area, and the bending angle is an included angle a between an extending surface of the first sub display panel 12 towards the bending area and an extending surface of the second sub display panel 13 towards the bending area; a detection electrode 210 in contact with the stretchable conductor 100; and the sensing electrode 220, the sensing electrode 220 and the stretchable conductor 100 are arranged along the extending direction X of the stretchable conductor 100, wherein, in a state that the stretchable conductor 100 is stretched (as shown in fig. 2), a first preset distance is formed between the stretchable conductor 100 and the sensing electrode 220, and the first preset distance is greater than zero; and in a state where the stretchable conductor 100 is bent in the extending direction X thereof (as shown in fig. 3), the stretchable conductor 100 is in contact with the sensing electrode 220.
It can be understood that the principle of the technical scheme provided by the embodiment of the invention in detecting the bending state of the flexible display panel is as follows: when the bending area of flexible display panel takes place to buckle, scalable conductor extends along with buckling, and when scalable conductor extends and finally touches the response electrode, the detection electrode communicates with response electrode electricity mutually through scalable conductor, and then the response electrode produces a sensing signal, then can confirm the bending state of the bending area of flexible display slow plate according to the sensing signal, and then carries out corresponding control to flexible display panel according to the bending state of bending area.
According to the technical scheme provided by the embodiment of the invention, the bending detection component is used for detecting the bending state of the bending area, wherein the flexible display panel is in a flattening state, and a preset distance is reserved between the telescopic conductor and the induction electrode; when the flexible display panel is bent in the bending area, the telescopic conductor arranged in the bending area extends, and then the extended telescopic conductor is contacted with the sensing electrode, so that the sensing electrode is electrically communicated with the detection electrode, and the sensing electrode generates a sensing signal electrically contacted with the detection electrode; with this, when response electrode and detecting electrode communicate through scalable conductor electricity and acquire the sensing signal, can judge the state of buckling of district of buckling according to the sensing signal, and then realized the detection to the district state of buckling through buckling the detection component, and be convenient for make corresponding control according to the buckling of district.
The bending detection component provided by the embodiment of the invention not only can detect the bending state of the bending area, but also can be used for detecting the bending angle of the bending area, namely, corresponding bending angle data can be set for the induction electrode, namely, corresponding bending angle data can be set for the induction signal generated by the induction electrode, and when the induction electrode generates the induction signal, the preset bending angle data of the induction electrode can be determined according to the induction signal on the basis of detecting the bending state of the bending area, so that the bending angle of the flexible display panel is finally determined. And further, more induction electrodes are arranged in the bending area, and a corresponding bending angle is set for each induction electrode, so that the purpose of more accurately detecting the bending angle of the bending area is achieved. The technical solutions provided by the embodiments of the present invention are further described below with reference to the accompanying drawings.
In an embodiment of the present invention, the sensing electrode provided in the embodiment of the present invention may be disposed only outside at least one side end portion of the telescopic conductor in the extending direction thereof. Referring to fig. 4, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is provided, wherein the stretchable conductor 100 includes a first end portion 110 and a second end portion 120 oppositely disposed in the extending direction X, and at least a first end portion 110 side of the stretchable conductor 100 is provided with a sensing electrode 220.
It can be understood that, in the flexible display panel provided in the embodiment of the present invention, the sensing electrode may be disposed at an end portion of one side of the stretchable conductor, and the sensing electrodes may also be disposed at end portions of two sides of the stretchable conductor, which is not particularly limited to the present invention; no matter set up the response electrode at a side tip or both sides tip, all can buckle through scalable conductor and extend with the response electrode contact, and make between detecting electrode and the response electrode electricity communicate, and then look for data according to sensing signal and confirm the purpose that the response electrode that detecting electrode put through corresponds the angle of buckling. In the drawings of the embodiments of the present invention, only one detection electrode is schematically shown, and in an actual operation process, a plurality of detection electrodes may be provided.
Furthermore, in order to detect more bending angles in the bending area, the sensing electrode provided in the embodiment of the present invention may be configured as a plurality of sub-sensing electrodes, each sub-sensing electrode is correspondingly configured with a bending angle data, and the bending angle data corresponding to each sub-sensing electrode is different. Referring to fig. 5, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is shown, wherein the sensing electrode provided in the embodiment of the present invention includes a plurality of sub-sensing electrodes 221, and the plurality of sub-sensing electrodes 221 are sequentially arranged along an extending direction X of the stretchable conductor 100.
It can be understood that, when the sensing electrode provided by the embodiment of the present invention includes a plurality of sub-sensing electrodes, different sub-sensing electrodes correspond to different bending angles, and in the bending process of the bending region of the flexible display panel, when the detection electrode is electrically connected with one sub-sensing electrode through the stretchable conductor, the corresponding bending angle is searched according to the sensing signal generated by the sub-sensing electrode; and the sensing signal generated by the last sub-sensing electrode is a target sensing signal, and the final bending angle of the flexible display panel is determined according to the target sensing signal, so that the purpose of detecting the bending angle of the flexible display panel is achieved.
Specifically, with reference to fig. 5, an example in which four sub-inductors are provided on the stretchable conductor 100 on the first end portion 110 side will be described. The sub-sensing electrodes 2211, 2212, 2213 and 2214 are sequentially arranged along the extending direction X of the retractable conductor 100, wherein the sub-sensing electrodes 2211 are located at one side close to the first end 110 of the retractable conductor 100, the sub-sensing electrodes 2214 are located at one side far away from the first end 110 of the retractable conductor 100, the sub-sensing electrodes 2211 are set to be a first bending angle, the sub-sensing electrodes 2212 are set to be a second bending angle, the sub-sensing electrodes 2213 are set to be a third bending angle, and the sub-sensing electrodes 2214 are set to be a fourth bending angle.
When the bending region of the flexible display panel begins to bend, the stretchable conductor 100 stretches along with the bending of the bending region, and first contacts with the sub-sensing electrode 2211, so that the sub-sensing electrode 2211 is electrically connected with the detection electrode 210, the sub-sensing electrode 2211 generates a sensing signal, and the current bending angle of the flexible display panel can be determined to be a first bending angle through the sensing signal; when the flexible display panel 100 contacts the sub-sensing electrode 2212 along with the continuous bending of the bending region, the current bending angle of the flexible display panel can be determined to be the second bending angle according to the sensing signal generated by the sub-sensing electrode 2212, and when the subsequent non-sub sensing electrode generates the sensing signal, the final bending angle of the flexible display panel is determined to be the second bending angle, so that the corresponding control operation can be performed according to the second bending angle; and when the sub-induction electrodes still generate induction signals subsequently, the induction signals generated finally are taken as target induction signals, and the final bending angle of the flexible display panel is determined according to the target induction signals.
Generally, the stretchable conductor has a reduced stretching capability as the bending angle is smaller, that is, when the stretchable conductor is bent from the flattened state to the first bending angle, the stretched length of the stretchable conductor is the first length; when the retractable conductor is bent from the flat state to the second bending angle, the extension length of the retractable conductor is the second length, the second bending angle is smaller than the first bending angle, and the value obtained by subtracting the first length from the second length is smaller than the first length, so that the distance between adjacent sub-sensing electrodes on the same side needs to be set to be gradually reduced in the direction away from the retractable conductor. Referring to fig. 6, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is provided, wherein, in all the sub sensing electrodes 221 located on the same side as the first end portion 110 of the stretchable conductor 100, a distance between two adjacent sub sensing electrodes 221 is gradually decreased in a direction from the second end portion 120 to the first end portion 110.
It is understood that the description will be given by taking an example in which the stretchable conductor 100 is provided with four sub-induction electrodes on the first end portion 110 side as shown in fig. 6. The sub-sensing electrodes 2211, the sub-sensing electrodes 2212, the sub-sensing electrodes 2213 and the sub-sensing electrodes 2214 are sequentially arranged along the extending direction X of the retractable conductor 100, wherein the distance d1 between the sub-sensing electrodes 2211 and the sub-sensing electrodes 2212, the distance d2 between the sub-sensing electrodes 2212 and the sub-sensing electrodes 2213, and the distance d3 between the sub-sensing electrodes 2213 and the sub-sensing electrodes 2214 are gradually reduced, it can be understood that the retractable conductor 100 reduces the distance between the sub-sensing electrodes 2213 gradually due to the fact that the extending capacity of the retractable conductor is reduced along with the increase of the extending length, and it is ensured that the bending angle of the bending region can be more accurately detected by the bending detection structure.
In an embodiment of the present invention, the second end side of the stretchable conductor provided by the present invention is also provided with an inductive electrode, all sub-inductive electrodes located at the first end side of the stretchable conductor are first sub-inductive electrodes, and all sub-inductive electrodes located at the second end side of the stretchable conductor are second sub-inductive electrodes; the induction electrode group comprises a first sub induction electrode and a second sub induction electrode, and the first sub induction electrode and the second sub induction electrode in the same induction electrode group are symmetrically arranged around the telescopic conductor.
Referring to fig. 7, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is shown, in which a plurality of sub-sensing electrodes are disposed on the first end 110 side of the stretchable conductor 100, and a plurality of sub-sensing electrodes are also disposed on the second end 120 side of the stretchable conductor 100, where all the sub-sensing electrodes disposed on the first end side of the stretchable conductor 100 are first sub-sensing electrodes 2221, and all the sub-sensing electrodes disposed on the second end 120 side of the stretchable conductor 100 are second sub-sensing electrodes 2222; and the first sub-sensing electrode 2221 and the second sub-sensing electrode 2222 disposed symmetrically with respect to the stretchable conductor 100 are divided into a sensing electrode group.
Further, in the extending direction X of the stretchable conductor 100, the detecting electrode 210 is located at the symmetry axis of the stretchable conductor 100; the axis of symmetry is perpendicular to the direction of extension X of the retractable conductor 100.
It can be understood that, in the sensing electrode group provided in the embodiments of the present invention, the first sub sensing electrode and the second sub sensing electrode are symmetrically disposed about the stretchable conductor, so that, in a case where the stretchable conductor stretches along with the bending of the bending region, the stretchable conductor can simultaneously contact the first sub sensing electrode and the second sub sensing electrode in the same sensing electrode group. Compared with the situation that the bending angle of the flexible display panel is detected through one sub-induction electrode, the same bending angle of the flexible display panel is detected through the first sub-induction electrode and the second sub-induction electrode of the same induction electrode group, and the sensitivity of the bending detection component can be improved.
In addition, when the first sub-sensing electrode or the second sub-sensing electrode in the same sensing electrode group is damaged, the other sub-sensing electrode can still detect the bending angle of the flexible display panel, and the reliability of the bending detection component can be further improved.
In addition, the detection electrode provided by the embodiment of the invention is used for outputting a detection signal, and when the telescopic conductor is contacted with the sensing electrode, the electric communication between the detection electrode and the sensing electrode can be realized, so that the sensing electrode generates a sensing signal. Therefore, the detection electrode provided by the embodiment of the invention is arranged at the symmetrical axis of the telescopic conductor, so that the distance between the detection electrode and the first end part and the distance between the detection electrode and the second end part of the telescopic conductor are the same, and the voltage drop of the detection signal output by the detection electrode to the first end part and the voltage drop of the detection signal output by the detection electrode to the second end part of the telescopic conductor are the same; when the first sub-induction electrode or the second sub-induction electrode in the same induction electrode group is used for simultaneously inducing, the difference of induction signals generated by the first sub-induction electrode or the second sub-induction electrode in the induction electrode group can be smaller, and the detection precision of the bending detection component is further improved.
In an embodiment of the present invention, the first sub sensing electrode and the second sub sensing electrode in the sensing electrode group provided by the present invention may be connected by the same sensing signal line. As shown in fig. 7, the first sub-sensing electrode 2221 and the second sub-sensing electrode 2222 in the same sensing electrode group are connected to the corresponding sensing device through the same sensing signal line.
Alternatively, in an embodiment of the present invention, the first sub sensing electrode and the second sub sensing electrode in the sensing electrode group provided by the present invention may be further connected to the corresponding sensing device through the corresponding sensing signal line. Referring to fig. 8, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is shown, wherein each of the first sub-sensing electrodes 2221 and each of the second sub-sensing electrodes 2222 are respectively connected to a sensing device through a corresponding sensing signal line.
In an embodiment of the present invention, a blocking block may be further disposed at an end of the retractable conductor, so as to fix an end of the retractable conductor and improve the fastening performance of the retractable conductor. Referring to fig. 9, a schematic structural diagram of another flexible display panel according to an embodiment of the present invention is provided, wherein, in the extending direction X of the stretchable conductor 100, the sensing electrode 220 is disposed on the first end 110 side of the stretchable conductor 100, the distance between the detection electrode 210 and the second end 120 of the stretchable conductor 100 is smaller than the distance between the detection electrode 210 and the first end 110 of the stretchable conductor 100, and the barrier 300 is disposed on the second end 120 side of the stretchable conductor 100.
It can be understood that, the blocking block is arranged at the second end side of the retractable conductor provided by the embodiment of the invention, so that the movement of the retractable conductor can be blocked by the blocking block, the situation that the position of the retractable conductor is changed is improved, and the fastening performance of the retractable conductor is improved; and because the existence of the stop block enables the telescopic conductor to stretch only when the first end part side bends, the detection electrode is arranged at the position close to the second end part side of the telescopic conductor without the stop block, the contact between the detection electrode and the telescopic conductor is ensured to be tighter, and the probability of poor contact between the detection electrode and the detection electrode when the telescopic conductor stretches is reduced.
In an embodiment of the present invention, the display device includes a display region and a non-display region surrounding the display region, wherein a first retaining wall and a second retaining wall are disposed at least one side of the non-display region, and the retractable conductor provided in the embodiment of the present invention may be disposed in a gap between the first retaining wall and the second retaining wall. Referring to fig. 10, a schematic structural diagram of another display panel according to an embodiment of the present invention is shown, which may be a sectional view taken along a direction CC' in fig. 1. The first retaining wall 410 and the second retaining wall 420 are oppositely arranged and extend in the same direction; the extending direction X of the retractable conductor 100 is the same as the extending direction of the first wall 410, and the retractable conductor 100 is disposed in the gap between the first wall 410 and the second wall 420.
It can be understood that the retractable conductor provided by the embodiment of the invention is arranged at the gap between the first retaining wall and the second retaining wall, so that the effective space between the first retaining wall and the second retaining wall is reasonably utilized, and the condition that the aperture ratio of the display device is influenced due to the fact that the retractable conductor is arranged in the display area is avoided.
Specifically, referring to fig. 11, a schematic structural diagram of another display panel according to an embodiment of the present invention is shown, which may be a sectional view at CC' in fig. 1. Wherein, the flexible display panel includes a display area AA and a non-display area NA, the first retaining wall 410 and the second retaining wall 420 are located in the non-display area NA on the same side of the display area AA, and the flexible display panel further includes:
a base, wherein the first retaining wall 410 and the second retaining wall 420 are positioned at one side of the base; and a functional layer 500 on the side of the first retaining wall 410 and the second retaining wall 420 facing away from the substrate.
In an embodiment of the present invention, a base of the flexible display panel provided in the embodiment of the present invention includes a base substrate 611, and a buffer layer 612, a light emitting array and an encapsulation film 626 sequentially stacked on the base substrate 611, where the light emitting array includes: a semiconductor layer 613 on a side of the buffer layer 612 facing away from the base substrate 611; a first insulating layer 614 on a side of the semiconductor layer 613 facing away from the base substrate 611; a gate metal layer 615 on a side of the first insulating layer 614 facing away from the base substrate 611; a second insulating layer 616 on a side of the gate metal layer 615 facing away from the base substrate 611; a capacitor metal layer 617 on a side of the second insulating layer 616 facing away from the base substrate 611; a third insulating layer 618 on the side of the capacitor metal layer 617 facing away from the base substrate 611; a source-drain metal layer 619 on a side of the third insulating layer 618 facing away from the base substrate 611; the passivation layer 620 is positioned on one side, away from the base substrate 611, of the source drain metal layer 619; a planarization layer 621 on a side of the passivation layer 620 facing away from the base substrate 611; and a pixel defining layer 622 on a side of the planarization layer facing away from the base substrate 621, wherein the pixel defining layer 622 includes a plurality of openings, and the openings define a light emitting device including an anode 623, a light emitting layer 624, and a cathode 625, which are sequentially stacked;
the packaging film is used to cover and package the planarization layer 621, the pixel defining layer 622 and the light emitting device of the light emitting array, the first retaining wall 410 and the second retaining wall 420 are located at the non-display area NA, the passivation layer 620 is located at a side of the base substrate 611, and the functional layer 500 is located at the first retaining wall 410 and the second retaining wall 420, which are located at a side of the base substrate 611. The encapsulation film may include a first organic layer 6261, an inorganic layer 6262, and a second organic layer 6263, which are sequentially stacked; the first organic layer 6261 and the second organic layer 6263 may extend to cover the gap region between the first retaining wall 410 and the second retaining wall 420, and the functional layer 500 is located on the side of the second organic layer 6263 facing away from the base substrate 611. The retractable conductor 100 may be disposed in the gap region between the first retaining wall 410 and the second retaining wall 420, and specifically, on the side of the first organic layer 6261 and the second organic layer 6263 laminated to face away from the base substrate 611.
The functional layer 500 provided in the embodiment of the present invention may be a thin film structure attached to a cover plate of a flexible display panel or a polarizer, and the present invention is not limited in particular. The retractable conductor 100 provided by the present invention can be disposed in a space defined by the first wall 410, the second wall 420 and the functional layer 500.
Further, referring to fig. 11, the flexible display panel according to the embodiment of the invention may further include a pressing block 700 disposed on a side of the stretchable conductor 100 facing the substrate or a side facing the functional layer, so as to assist the pressing block to apply pressure to the stretchable conductor during bending, thereby improving the stretching capability of the stretchable conductor.
In an embodiment of the present invention, at least one of the detection electrode and the sensing electrode provided in the present invention can be formed by forming a conductive film additionally formed in an original manufacturing process of the flexible display panel; or, at least one of the detection electrode and the sensing electrode may be formed by multiplexing the original conductive film in the flexible display panel manufacturing process, for example, at least one of the detection electrode and the sensing electrode may be formed by multiplexing any one of the gate metal layer, the capacitor metal layer, the source drain metal layer, and the anode. Alternatively, the flexible display panel provided in the embodiment of the present invention further includes: and a touch functional layer located on a side of the packaging film away from the base substrate, where the touch functional layer includes a touch electrode layer and/or a touch routing layer, and at least one of the detection electrode and the sensing electrode may be formed by using a conductive film of the touch electrode layer or the touch routing layer. The invention does not limit the specific film position of the detection electrode and the induction electrode, and the detection electrode and the induction electrode can be positioned on the same metal layer or different metal layers.
In an embodiment of the present invention, the present invention is not particularly limited to the type of the stretchable conductor. Optionally, the stretchable conductor provided by the present invention comprises an anisotropic material and conductive particles.
It will be appreciated that embodiments of the present invention provide anisotropic materials having a predetermined elasticity and a length that is capable of stretching when the stretchable conductor formed thereon is bent in the direction of the extension direction thereof. And furthermore, conductive particles are added into the anisotropic material, so that the anisotropic material has the capability of being bent along the extension direction of the anisotropic material to realize extension and contraction.
It should be noted that, in the embodiment of the present invention, the specific material of the anisotropic material is not limited, and the specific material needs to be selected according to the actual application.
Correspondingly, the invention further provides a display device which comprises the flexible display panel provided by any one of the embodiments.
Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device 1000 according to the embodiment of the present invention may be a mobile terminal device.
Optionally, the display device provided by the present invention may also be an electronic display device such as a computer and a wearable display device, and the present invention is not particularly limited.
The invention provides a flexible display panel and a display device, wherein the flexible display panel comprises a bending area; the flexible display panel further comprises at least one bending detection member, the flexible display panel bends at the bending area, wherein the bending detection member comprises: the telescopic conductor is at least partially positioned in the bending area, and the extension length of the telescopic conductor in the extension direction of the telescopic conductor is increased along with the reduction of the bending angle of the telescopic conductor in the extension direction; the flexible display panel comprises a first sub display panel and a second sub display panel which are respectively positioned at two sides of a bending area, and the bending angle is an included angle between an extension surface of the first sub display panel to the bending area and an extension surface of the second sub display panel to the bending area; a detection electrode in contact with the stretchable conductor; the sensing electrodes and the telescopic conductors are arranged along the extension direction of the telescopic conductors, wherein a first preset distance is formed between the telescopic conductors and the sensing electrodes in a state that the telescopic conductors are flattened, and the first preset distance is larger than zero; and the retractable conductor is contacted with the sensing electrode under the state that the retractable conductor is bent along the extension direction.
As can be seen from the above, in the technical solution provided by the present invention, the bending detection component is used for detecting the bending state of the bending region, wherein, when the flexible display panel is in the flat state, a preset distance is provided between the stretchable conductor and the sensing electrode; when the flexible display panel is bent in the bending area, the telescopic conductor arranged in the bending area extends, and then the extended telescopic conductor is contacted with the sensing electrode, so that the sensing electrode is electrically communicated with the detection electrode, and the sensing electrode generates a sensing signal electrically contacted with the detection electrode; with this, when response electrode and detecting electrode communicate through scalable conductor electricity and acquire the sensing signal, can judge the state of buckling of district of buckling according to the sensing signal, and then realized the detection to the district state of buckling through buckling the detection component, and be convenient for make corresponding control according to the buckling of district.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. A flexible display panel, comprising a bend region;
the flexible display panel further comprises at least one bending detection member, the flexible display panel bends at the bending region, wherein the bending detection member comprises:
a retractable conductor at least partially located in the bending region, wherein in an extending direction of the retractable conductor, an extension length of the retractable conductor increases with a decrease in a bending angle of the retractable conductor along the extending direction; the flexible display panel comprises a first sub display panel and a second sub display panel which are respectively positioned at two sides of the bending area, and the bending angle is an included angle between an extending surface of the first sub display panel to the bending area and an extending surface of the second sub display panel to the bending area;
a sensing electrode in contact with the retractable conductor;
the induction electrodes and the telescopic conductors are arranged along the extension direction of the telescopic conductors, wherein in the state that the telescopic conductors are unfolded, a first preset distance is formed between the telescopic conductors and the induction electrodes, and the first preset distance is larger than zero; and under the state that the telescopic conductor is bent along the extension direction of the telescopic conductor, the telescopic conductor is contacted with the induction electrode.
2. The flexible display panel according to claim 1, wherein the stretchable conductor includes a first end portion and a second end portion which are oppositely disposed in an extending direction, and at least the first end portion side of the stretchable conductor is provided with the sensing electrode.
3. The flexible display panel of claim 2, wherein the sensing electrode comprises a plurality of sub-sensing electrodes, and the plurality of sub-sensing electrodes are sequentially arranged along an extending direction of the stretchable conductor.
4. The flexible display panel of claim 3, wherein in all the sub-sensing electrodes on the same side as the first end of the stretchable conductor, the distance between two adjacent sub-sensing electrodes gradually decreases from the second end to the first end.
5. The flexible display panel according to claim 3, wherein the second end side of the stretchable conductor is also provided with the sensing electrode, all sub-sensing electrodes located on the first end side of the stretchable conductor are first sub-sensing electrodes, and all sub-sensing electrodes located on the second end side of the stretchable conductor are second sub-sensing electrodes;
the sensing electrode group comprises a first sub sensing electrode and a second sub sensing electrode, and the first sub sensing electrode and the second sub sensing electrode in the same sensing electrode group are symmetrically arranged around the telescopic conductor.
6. The flexible display panel of claim 5, wherein the detection electrode is located at an axis of symmetry of the stretchable conductor in an extending direction of the stretchable conductor; the axis of symmetry is perpendicular to the direction of extension of the retractable conductor.
7. The flexible display panel according to claim 2, wherein the first end portion side of the stretchable conductor is provided with the sensing electrode, a distance between the detection electrode and a second end portion of the stretchable conductor is smaller than a distance between the detection electrode and the first end portion of the stretchable conductor, and the second end portion of the stretchable conductor is provided with a stopper.
8. The flexible display panel according to claim 1, comprising a first retaining wall and a second retaining wall which are oppositely arranged and have the same extending direction;
the extension direction of the telescopic conductor is the same as that of the first retaining wall, and the telescopic conductor is arranged in a gap between the first retaining wall and the second retaining wall.
9. The flexible display panel according to claim 8, wherein the flexible display panel comprises a display region and a non-display region, the first barrier wall and the second barrier wall are located in the non-display region on the same side of the display region, and the flexible display panel further comprises:
the first retaining wall and the second retaining wall are positioned on one side of the base;
and the functional layer is positioned on one side, back to the substrate, of the first retaining wall and the second retaining wall.
10. The flexible display panel of claim 1, wherein the stretchable conductors comprise an anisotropic material and conductive particles.
11. A display device, characterized in that the display device comprises a flexible display panel according to any one of claims 1-10.
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| CN112002239B (en) * | 2020-09-10 | 2023-02-07 | 京东方科技集团股份有限公司 | Display substrate, display device and control method thereof |
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| KR102485231B1 (en) * | 2016-09-01 | 2023-01-05 | 삼성디스플레이 주식회사 | Apparatus and driving method for flexible display device |
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