CN107329624B - Flexible touch display panel and display device - Google Patents
Flexible touch display panel and display device Download PDFInfo
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- CN107329624B CN107329624B CN201710556792.4A CN201710556792A CN107329624B CN 107329624 B CN107329624 B CN 107329624B CN 201710556792 A CN201710556792 A CN 201710556792A CN 107329624 B CN107329624 B CN 107329624B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The application discloses flexible touch display panel and display device, flexible touch display panel includes: a first touch electrode group including multiple first touch electrodes extending along a first directionThe first touch control electrodes are arranged in two directions; the second touch electrode group comprises a plurality of second touch electrodes which extend along the second direction and are arranged along the first direction; the flexible touch display panel comprises a bending area and a non-bending area; in the bending region, the second touch electrode has a first minimum width l along a first direction1In the non-bending region, the second touch electrode has a second minimum width l along the first direction2And satisfies the following conditions: l1>l2(ii) a An included angle between a bending axis of the flexible touch display panel and the first direction is smaller than an included angle between the bending axis and the second direction. According to the scheme of the application, the possibility of breakage and breakage of the second touch electrode caused by bending can be reduced, and therefore the risk of touch detection failure is reduced.
Description
Technical Field
The present disclosure relates generally to the field of display technologies, and more particularly, to a flexible touch display panel and a display device.
Background
With the development of display technology, flexible display technology is applied more and more widely. In the structure of the conventional flexible display panel, a flexible substrate and a layer structure of each display device formed on one side of the flexible substrate are generally included. For example, a structure of a flexible OLED (Organic Light-Emitting Diode) display panel may include: the flexible OLED display panel comprises a flexible substrate and a plurality of conducting layers sequentially formed on the flexible substrate, wherein the conducting layers comprise a thin film transistor array layer, an anode layer, an organic light emitting layer, a cathode layer and a packaging layer, and when the flexible OLED display panel is a touch display panel, the flexible OLED display panel can further comprise 1-2 touch electrode layers. An insulating layer may also be provided between each conductive layer to insulate adjacent conductive layers.
In addition, some flexible display panels have an area where at least a portion can be folded (which may be referred to as a bending region). The portion of the flexible display panel in the bending region may be folded in a certain direction. When folded, the electrode having a small width in the folding direction is likely to be broken, resulting in poor contact or even disconnection. If the broken electrode is a touch electrode, the touch detection of the electrode is poor, and even the touch fails.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a pressure detection display device to solve the technical problems in the prior art.
In a first aspect, an embodiment of the present application provides a flexible touch display panel, including: the first touch electrode group comprises a plurality of first touch electrodes which extend along a first direction and are arranged along a second direction; the second touch electrode group comprises a plurality of second touch electrodes which extend along the second direction and are arranged along the first direction; the flexible touch display panel comprises a bending area and a non-bending area; in the bending region, the second touch electrode has a first minimum width l along a first direction1In the non-bending region, the second touch electrode has a second minimum width l along the first direction2And satisfies the following conditions: l1>l2(ii) a An included angle between a bending axis of the flexible touch display panel and the first direction is smaller than an included angle between the bending axis and the second direction.
In a second aspect, the present application also provides a flexible touch display device, including the flexible touch display panel.
According to the scheme of the application, because the included angle between the bending axis and the first direction is smaller than the included angle between the bending axis and the second direction, the second touch electrode in the bending area is enabled to be along the first minimum width l of the first direction1The arrangement is larger, so that the second touch electrode in the bending area can be prevented from being bentThe second touch electrode is subjected to relatively concentrated stress in a certain small area, so that the possibility of breakage and breakage of the second touch electrode due to bending is reduced, and the risk of touch detection failure is reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1A is a schematic block diagram of one embodiment of a flexible touch display panel of the present application;
fig. 1B is a schematic structural diagram of a second touch electrode set in fig. 1A;
FIG. 2A is a schematic block diagram of another embodiment of a flexible touch display panel of the present application;
FIG. 2B is a schematic diagram of the first touch electrode in FIG. 2A;
FIG. 2C is a schematic structural diagram of the second touch electrode in FIG. 2A;
FIG. 2D is a schematic cross-sectional view taken along A-A' in FIG. 2A;
FIG. 3A is a schematic block diagram of yet another embodiment of a flexible touch display panel of the present application;
FIG. 3B is a schematic cross-sectional view along an alternative implementation of B-B' in FIG. 3A;
FIG. 3C is a schematic cross-sectional view along B-B' of FIG. 3A of another alternative implementation;
FIG. 4A is a schematic block diagram of yet another embodiment of a flexible touch display panel of the present application;
FIG. 4B is a schematic diagram of the second touch electrode shown in FIG. 4A;
FIG. 4C is a schematic structural diagram of an alternative implementation of the first touch electrode and the second touch electrode in the bending region in the embodiment shown in FIG. 4A;
FIG. 4D is an enlarged partial schematic view of FIG. 4C;
fig. 5 is a schematic cross-sectional view of a flexible touch display panel of the present application when the flexible touch display panel is an organic light emitting display panel;
FIG. 6 is a schematic block diagram of one embodiment of a flexible touch display device of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1A, a schematic block diagram of one embodiment of a flexible touch display panel of the present application is shown.
The flexible touch display panel of the embodiment includes a first touch electrode group and a second touch electrode group. The first touch electrode group includes a plurality of first touch electrodes 110 extending along the first direction D1 and arranged along the second direction D2. The second touch electrode group includes a plurality of second touch electrodes 120 extending along the second direction D2 and arranged along the first direction D1.
In addition, as shown in fig. 1A, the flexible touch display panel of the present embodiment further includes a bending region F1 and a non-bending region. The portion of the flexible touch display panel in the bending region F1 may be folded, while the portion of the flexible touch display panel in the non-bending region may not be deformed.
Further referring to fig. 1B, a schematic structural diagram of a second touch electrode group in the flexible touch display panel shown in fig. 1A is shown.
As can be seen from fig. 1B, in the bending region, the second touch electrode 120 has a first minimum width l along the first direction D11In the non-bending region, the second touch electrode 120 has a second minimum width l along the first direction D12And satisfy l1>l2。
The included angle between the bending axis of the flexible touch display panel and the first direction D1 is smaller than the included angle between the bending axis and the second direction D2.
Assuming that the bending region is a rectangular region formed by the intersection of the two dotted lines shown in fig. 1B and the outline of the flexible touch display panel, the included angle θ e [ - θ ] between the bending axis and the horizontal direction in the bending region1,θ1]. Here, -theta1And theta1Respectively the included angles between two diagonals of the rectangular area and the horizontal direction.
In the flexible touch display panel of the embodiment, by setting the minimum width of the second touch electrode 120 in the bending region F1 along the first direction D1 to be greater than the minimum width of the second touch electrode 120 in the non-bending region along the first direction D1, no matter which direction the second touch electrode 120 in the bending region F1 is bent, cracks are not easily generated, and thus the risk of touch failure caused by breakage of the second touch electrode 120 during bending is reduced.
In this embodiment, the first touch electrode 110 may be one of a touch driving electrode and a touch sensing electrode, and the second touch electrode 120 may be the other of the touch driving electrode and the touch sensing electrode. The touch position can be determined by applying a touch driving signal to the touch driving electrode and receiving a touch sensing signal acquired by the touch sensing electrode.
It will be understood by those skilled in the art that the flexible touch display panel of the present embodiment further includes other well-known structures, such as a pixel array, and a thin film transistor for providing a display signal to each pixel in the pixel array. These well-known structures will not be described in detail so as not to obscure the focus of the present application.
Referring to fig. 2A, a schematic block diagram of another embodiment of the flexible touch display panel of the present application is shown.
Similar to the embodiment shown in fig. 1A, the flexible touch display panel of the present embodiment also includes a first touch electrode group and a second touch electrode group. The first touch electrode group includes a plurality of first touch electrodes 210 extending along the first direction D1 and arranged along the second direction D2. The second touch electrode group includes a plurality of second touch electrodes 22 extending along the second direction D2 and arranged along the first direction D10. The flexible touch display panel of the present embodiment also includes a bending region F1 and a non-bending region. The portion of the flexible touch display panel in the bending region F1 may be folded, while the portion of the flexible touch display panel in the non-bending region may not be deformed. In addition, in the flexible touch display panel of the present embodiment, in the bending region, the second touch electrode 220 has a first minimum width l along the first direction D11In the non-bending region, the second touch electrode 220 has a second minimum width l along the first direction D12And also satisfy l1>l2。
Unlike the embodiment shown in fig. 1A, the present embodiment further defines the structures of the first touch electrode and the second touch electrode.
Specifically, referring to fig. 2B, the schematic structure diagram of the first touch electrode 210 in the flexible touch display panel of the present embodiment is shown. As shown in fig. 2B, the first touch electrode 210 includes a plurality of first touch electrode blocks 211 arranged along the first direction D1 and first connection electrodes 212 for connecting two adjacent first touch electrode blocks 211.
Similarly, referring to fig. 2C, the schematic structure diagram of the second touch electrode 220 in the flexible touch display panel of the present embodiment is shown. As shown in fig. 2C, the second touch electrode 220 includes a plurality of second touch electrode blocks 221 arranged along the second direction D2 and a second connection electrode 222 for connecting two adjacent second touch electrode blocks 221.
Further reference is made to fig. 2D, which is a cross-sectional view taken along a-a' in fig. 2A. In this embodiment, as shown in fig. 2D, the first touch electrode block 211, the second touch electrode block 221 and the second connection electrode 222 are formed on the first conductive layer. The first connection electrodes 212 are formed on the second conductor layer. An insulating material 230 is disposed between the first conductor layer and the second conductor layer.
In the flexible touch display panel of the embodiment, by setting the minimum width of the second touch electrode 220 in the bending region F1 along the first direction D1 to be greater than the minimum width of the second touch electrode 220 in the non-bending region along the first direction D1, no matter which direction the second touch electrode 220 in the bending region F1 is bent, cracks are not easily generated, and thus the risk of touch failure caused by breakage of the second touch electrode 220 during bending is reduced.
In addition, according to the flexible touch display panel of the embodiment, the first touch electrode block 211, the second touch electrode block 221 and the second connection electrode 222 are disposed on the same conductive layer, so that the distance between the first touch electrode block 211 and the second touch electrode block 221 adjacent to the first touch electrode block can be correspondingly reduced, the signal amount of the sensing capacitor formed by the first touch electrode block 211 and the second touch electrode block 221 is larger, and the improvement of the touch detection precision is facilitated.
Referring to fig. 3A, a schematic block diagram of yet another embodiment of a flexible touch display panel of the present application is shown.
Similar to the embodiment shown in fig. 2A, the flexible touch display panel of the present embodiment also includes a first touch electrode group and a second touch electrode group. The first touch electrode group includes a plurality of first touch electrodes 210 extending along the first direction D1 and arranged along the second direction D2. The second touch electrode group includes a plurality of second touch electrodes 220 extending along the second direction D2 and arranged along the first direction D1. The flexible touch display panel of the present embodiment also includes a bending region F1 and a non-bending region. The portion of the flexible touch display panel in the bending region F1 may be folded, while the portion of the flexible touch display panel in the non-bending region may not be deformed. In addition, in the flexible touch display panel of the present embodiment, in the bending region, the second touch electrode 220 has a first minimum width l along the first direction D11In the non-bending region, the second touch electrode 220 has a second minimum width l along the first direction D12And also satisfy l1>l2。
In addition, in the flexible touch display panel of the present embodiment, the first touch electrode and the second touch electrode also have a similar structure to the embodiment shown in fig. 2A. Specifically, the first touch electrode 210 includes a plurality of first touch electrode blocks arranged along the first direction D1 and a first connection electrode for connecting two adjacent first touch electrode blocks. The second touch electrode 220 includes a plurality of second touch electrode blocks arranged along the second direction D2 and a second connection electrode for connecting two adjacent second touch electrode blocks. The first touch electrode block, the second touch electrode block and the second connecting electrode are formed on the first conductor layer. The first connecting electrode is formed on the second conductor layer. An insulating material is disposed between the first conductor layer and the second conductor layer.
Referring to FIG. 3B, a cross-sectional view taken along line B-B' of FIG. 3A is shown.
As shown in fig. 3B, the present embodiment is different from the embodiment shown in fig. 2A in that a plurality of first slits 323 are formed on the second touch electrode 320 disposed in the bending region F1, and the first slits 323 are filled with an insulating material.
In some optional implementations of this embodiment, the first conductor layer is located on a side closer to the substrate than the second conductor layer, and in these optional implementations, the insulating material filled in the first slit 323 may be an insulating material between the first conductor layer and the second conductor layer. In manufacturing, for example, the first touch electrode block, the second touch electrode block and the second connection electrode on the first conductor layer may be manufactured first, and then the first conductor layer is covered with the insulating material. As such, the insulating material may be filled into the first slits 323.
The bending resistance of the second touch electrode block in the bending region can be further enhanced by providing the plurality of first notches 323 on the second touch electrode block in the bending region. Specifically, if cracks appear on the second touch electrode block in the bending process, the cracks can be prevented from further spreading on the second touch electrode block due to the existence of the first notch and the insulating material, and therefore touch failure caused by breakage of the second touch electrode block is avoided.
In some optional implementations of the present embodiment, as shown in fig. 3A and 3B, a plurality of second slits 313 may be formed on the first touch electrode block 311 disposed in the bending region. The second kerf 313 may also be filled with an insulating material. As a result, the bending resistance of the first touch electrode 310 in the bending region can be further enhanced.
It should be noted that, in this embodiment, the first slit and the second slit may have the structures as shown in fig. 3B, that is, the first slit 323 and the second slit 313 are through grooves, the second touch electrode is correspondingly hollowed at the first slit 323, and the first touch electrode is also correspondingly hollowed at the second slit. Alternatively, the second slits and the first slits formed on the first touch electrode and the second touch electrode in the bending region may have the structure as shown in fig. 3C, that is, the first slits 323 ' and the second slits 313 ' are non-through grooves, the second touch electrode is not correspondingly hollowed at the first slits 323 ', and the first touch electrode is not correspondingly hollowed at the second slits, but the thickness of the second touch electrode is smaller at the first slits 323 ', and the thickness of the first touch electrode is smaller at the second slits 313 '.
In addition, in some alternative implementations, the insulating material filled in the first slit and the second slit of the flexible touch display panel of the present embodiment may be an organic material. The organic material has better bending resistance than the inorganic material, and thus, when the insulating material filled in the first and second slits is an organic material, the bending resistance of the first and second touch electrodes can be further increased. Here, the organic material may include, but is not limited to, Polymethylmethacrylate (PMMA), a phenol-containing polymer derivative, an acrylic polymer, an imide-based polymer, an aromatic ether-based polymer, an amide-based polymer, a fluorine-containing-based polymer, a p-xylene-based polymer, a vinyl alcohol-based polymer, and/or a mixture thereof, and the like. Similarly, the insulating material covering the first conductor layer may also be an organic material. Because the tensile strength for reflecting the bending resistance is in direct proportion to the product of the elastic modulus of the material and the thickness of the material, the bending resistance of the insulating material can be correspondingly increased by properly increasing the thickness of the insulating material, and further, a better protection effect can be achieved for the first electrode block, the second electrode block and the second connecting electrode formed on the first conductor layer. Here, the thickness of the insulating material covering the first conductor layer may be, for example, more than 1 μm.
In addition, in some alternative implementations of the present embodiment, in the bending region F1, each of the first slits 323 and 323' may be formed at a minimum width where the second touch electrode extends along the first direction D1. Since the risk of breaking the second touch electrode due to bending is the greatest at the position where the width is the smallest, the first notches 323 and 323' are provided at the position, so that the bending resistance of the second touch electrode can be improved more remarkably.
Referring to fig. 4A, a schematic block diagram of still another embodiment of the flexible touch display panel of the present application is shown.
Similar to the embodiment shown in fig. 2A, the flexible touch display panel of the present embodiment also includes a first touch electrode group and a second touch electrode group. The first touch electrode group includes a plurality of first touch electrodes 410 extending along the first direction D1 and arranged along the second direction D2. The second touch electrode group includes a plurality of second touch electrodes 420 extending along the second direction D2 and arranged along the first direction D1. The flexible touch display panel of the present embodiment also includes a bending region F1 and a non-bending region. The portion of the flexible touch display panel in the bending region F1 may be folded, while the portion of the flexible touch display panel in the non-bending region may not be deformed. In addition, in the flexible touch display panel of the present embodiment, in the bending region, the second touch electrode 420 has a first minimum width l along the first direction D11In the non-bending region, the second touch electrode 420 has a second minimum width l along the first direction D12And also satisfy l1>l2. In addition, the first touch electrode 410 also includes a plurality of first touch electrode blocks arranged along the first direction D1 and a first connecting electrode for connecting two adjacent first touch electrode blocks. The second touch electrode 420 also includes a plurality of second touch electrode blocks arranged along the second direction D2 and a second connection electrode for connecting two adjacent second touch electrode blocks. The first touch electrode block, the second touch electrode block and the second connecting electrode are formed on the first conductor layer. The first connecting electrode is formed on the second conductor layer.
Unlike the embodiment shown in fig. 2A, the shape of the second touch electrode 420 is further defined in the present embodiment.
Specifically, in this embodiment, the shape of the second touch electrode block formed in the bending region is a shape formed by at least two second touch electrode blocks formed in the non-bending region partially overlapping in the second direction. Fig. 4B is a schematic structural diagram of the second touch electrode 420 of the present embodiment. In the bending region F1, the second touch electrode 420 has a shape formed by three second touch electrode blocks 421 formed in the non-bending region partially overlapping in the second direction D2.
As can be seen from fig. 4B, when the shape of the second touch electrode block in the bending region is formed by at least two second touch electrode blocks formed in the non-bending region and partially overlapped along the second direction, the included angle between the contour edge of the second touch electrode in the bending region and the first direction D1 can be correspondingly reduced. Therefore, the included angle between the outline edge of the second touch electrode in the bending area and the bending axis is reduced. Therefore, when the bending area is bent, the second touch electrode in the bending area is less deformed due to bending, and correspondingly, the stress is less, so that the breakage of the second touch electrode due to stress during bending is further reduced.
Those skilled in the art can understand that the shape of the second touch electrode in the bending region can be determined according to the requirements of the practical application scenario, and specifically, the second touch electrode blocks in several non-bending regions are formed by partially overlapping along the second direction. For example, when the bending region has a larger width in the second direction, the shape of the second touch electrode in the bending region may be a shape formed by partially overlapping more second touch electrode blocks in the non-bending region in the second direction. On the other hand, when the bending region has a smaller width in the second direction, the shape of the second touch electrode in the bending region may be set to a shape formed by partially overlapping the second touch electrode blocks of fewer non-bending regions in the second direction.
In addition, in some optional implementations of the present embodiment, in order to make the first touch electrode 410 and the second touch electrode 420 embedded into each other more closely in the first direction, so that the distance between the first touch electrode 410 and the second touch electrode 420 is smaller and the amount of the touch sensing signal is larger, in the bending region F1, as shown in fig. 4A, the area of each first touch electrode block 411a is smaller than the area of each first touch electrode block formed in the non-bending region.
In some optional implementations of the present embodiment, the first touch electrode block and the second touch electrode block formed in the bending region have a folding line and/or a curved edge.
Referring to fig. 4C, for example, when the first touch electrode block 411 and the second touch electrode block 412 formed in the bending region have edges of a folding line, an included angle between each line segment composing the folding line and the first direction D1 is smaller than an included angle between the edges of the first touch electrode block and the second touch electrode block formed in the non-bending region and the first direction.
Specifically, reference may be further made to fig. 4D, which is a partially enlarged schematic view within the area indicated by reference numeral 450 in fig. 4C.
As shown in fig. 4D, in the bending region, the included angle between each line segment composing the broken line profile of the first touch electrode block 411 and the first direction D1 is θ1The included angle between each line segment forming the broken line outline of the second touch electrode block 421 and the first direction D1 is θ2Due to theta1、θ2Are both smaller than the included angle between the edge of the first touch electrode block and the edge of the second touch electrode block which are formed in the non-bending area and the first direction. Therefore, when the bending device is bent, the included angle between the contour of the first touch electrode block and the contour of the second touch electrode block in the bending area and the bending axis is correspondingly smaller, so that the deformation of the first touch electrode block and the second touch electrode block during bending is reduced, and the bending resistance of the first touch electrode block and the second touch electrode block is further improved.
Alternatively, the flexible touch display panel according to embodiments of the present application may be an organic light emitting display panel.
Referring to fig. 5, a schematic cross-sectional view when the flexible touch display panel according to the embodiments of the present application is an organic light emitting display panel is shown.
As shown in fig. 5, the organic light emitting display panel may include a flexible substrate 510, an organic light emitting function layer 520 formed on the flexible substrate, and a thin film encapsulation layer 530 formed on the organic light emitting function layer. The organic light emitting functional layer may further include an anode 521, a cathode 522, and a light emitting material 523 formed between the anode 521 and the cathode 522.
When the flexible touch display panel according to the embodiments of the present disclosure is an organic light emitting display panel, the first touch electrode group and the second touch electrode group may be formed on the upper surface of the thin film encapsulation layer 530 away from the flexible substrate 510. For example, the first touch electrode block 541, the second touch electrode block, and the second connection electrode 542 may be formed on the upper surface of the thin film encapsulation layer 530, the insulating material 550 may cover the first touch electrode block 541, the second touch electrode block, and the second connection electrode 542, and the first connection electrode 561 may be formed on the insulating material 550.
According to the embodiment of the application, the touch control functional layer is integrated on the surface of the thin film packaging layer of the OLED panel, on one hand, the attachment of a thicker touch control panel in the prior art can be omitted, the preparation of the touch control functional layer is highly integrated in the manufacturing process of the display panel, the preparation process is simple, the cost is reduced, meanwhile, only one driving IC is adopted for providing driving for the touch control functional layer and the display functional layer simultaneously due to the structure, the number of driving chips is reduced, and further cost reduction is facilitated. On the other hand, because the touch panel with thick attaching thickness is avoided, the embodiment of the application is beneficial to the lightening and thinning of the flexible touch display panel, so that the panel has better flexibility, the user experience of the display panel is promoted, and great convenience is provided for the flexible design of the display device.
It should be noted that the flexible touch display panel in the above embodiments of the present application may be a flexible OLED touch display panel, but it should be understood by those skilled in the art that the touch display panel in the embodiments of the present application is also applicable to any other possible display technologies, such as micro light Emitting diode (micro LED), Quantum dot display (Quantum dot light Emitting Diodes, QLED), electronic paper, and the like, and the flexible touch display panel in the embodiments of the present application may be specifically selected and set according to requirements.
Referring to fig. 6, a schematic block diagram of an embodiment of a flexible touch display device of the present application is shown.
The display device 600 may include a flexible touch display panel as described in any of the above embodiments. It should be understood by those skilled in the art that the flexible touch display device of the present embodiment may include some other known structures, such as an integrated circuit chip for providing display signals to the flexible touch display device, in addition to the flexible touch display panel as above. Such well-known structures will not be further described in order not to obscure the focus of the present application.
The flexible touch display device of the present application may be any device including the flexible touch display panel as above, including but not limited to a bendable or rollable or foldable cellular phone, a tablet computer, a smart wearable device, a display device applied to a vehicle such as an automobile, and the like. As long as the flexible touch display device includes the structure of the flexible touch display panel disclosed herein, it is considered to fall within the scope of the present application.
The flexible touch display panel and the display device have the advantages that the second touch electrode of the bending area is enabled to be along the first minimum width l of the first direction1The touch detection device is large in arrangement, so that the possibility of breakage and breakage of the second touch electrode due to bending can be reduced, and the risk of touch detection failure is reduced.
It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (11)
1. A flexible touch display panel, comprising:
the first touch electrode group comprises a plurality of first touch electrodes which extend along a first direction and are arranged along a second direction;
the second touch electrode group comprises a plurality of second touch electrodes which extend along the second direction and are arranged along the first direction; the flexible touch display panel comprises a bending area and a non-bending area;
in the bending region, the second touch electrode has a first minimum width l along the first direction1In the non-bending region, the second touch electrode has a second minimum width l along the first direction2And satisfies the following conditions:
l1>l2；
an included angle between a bending shaft of the flexible touch display panel and the first direction is smaller than an included angle between the bending shaft and the second direction;
a plurality of first notches are formed on the second touch electrode arranged in the bending area;
in the bending area, each first notch is formed at the position of the minimum width of the second touch electrode extending along the first direction.
2. The flexible touch display panel of claim 1, wherein:
the first touch electrode comprises a plurality of first touch electrode blocks arranged along the first direction and a first connecting electrode used for connecting two adjacent first touch electrode blocks;
the second touch electrode comprises a plurality of second touch electrode blocks arranged along the second direction and a second connecting electrode used for connecting two adjacent second touch electrode blocks;
the first touch electrode block, the second touch electrode block and the second connecting electrode are formed on a first conductor layer;
the first connecting electrode is formed on the second conductor layer;
an insulating material is disposed between the first conductor layer and the second conductor layer.
3. The flexible touch display panel of claim 2, wherein:
the first notch is filled with the insulating material, and the insulating material is an organic material.
4. The flexible touch display panel of claim 3, wherein:
a plurality of second notches are formed in the first touch electrode block arranged in the bending area;
the second notch is filled with the insulating material.
5. The flexible touch display panel of any of claims 2-4, wherein:
the shape of the second touch electrode block formed in the bending area is a shape formed by partially overlapping at least two second touch electrode blocks formed in the non-bending area along the second direction.
6. The flexible touch display panel of claim 5, wherein:
the area of each first touch electrode block formed in the bending area is smaller than that of each first touch electrode block formed in the non-bending area.
7. The flexible touch display panel of any of claims 2-4, wherein:
the first touch electrode block and the second touch electrode block formed in the bending area are provided with a folding line and/or a curve edge.
8. The flexible touch display panel of claim 7, wherein:
the first touch electrode block and the second touch electrode block formed in the bending area are provided with fold line edges;
and the included angle between each line segment forming the fold line and the first direction is smaller than the included angle between the edge of the first touch electrode block and the edge of the second touch electrode block, which are formed in the non-bending area, and the first direction.
9. The flexible touch display panel of claim 1, wherein:
the flexible touch display panel is an organic light-emitting display panel;
the organic light emitting display panel comprises a flexible substrate, an organic light emitting function layer formed on the flexible substrate, and a thin film encapsulation layer formed on the organic light emitting function layer.
10. The flexible touch display panel of claim 9, wherein:
the first touch electrode group and the second touch electrode group are formed on the upper surface, far away from the flexible substrate, of the thin film packaging layer.
11. A flexible touch display device comprising the flexible touch display panel according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556792.4A CN107329624B (en) | 2017-07-10 | 2017-07-10 | Flexible touch display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556792.4A CN107329624B (en) | 2017-07-10 | 2017-07-10 | Flexible touch display panel and display device |
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| CN107329624A CN107329624A (en) | 2017-11-07 |
| CN107329624B true CN107329624B (en) | 2020-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108227990A (en) * | 2018-01-03 | 2018-06-29 | 京东方科技集团股份有限公司 | Touch base plate and display device |
| CN108415607B (en) * | 2018-03-28 | 2021-03-23 | 京东方科技集团股份有限公司 | Touch structure, manufacturing method, touch panel and display device |
| CN108932078B (en) * | 2018-06-22 | 2023-04-11 | 京东方科技集团股份有限公司 | Touch panel, manufacturing method thereof and electronic device |
| CN108874224A (en) | 2018-06-27 | 2018-11-23 | 武汉天马微电子有限公司 | A kind of flexibility touch-control display panel and its folding angles detection method and system |
| CN108919996B (en) * | 2018-06-28 | 2022-02-08 | 武汉天马微电子有限公司 | Flexible touch screen |
| CN108958539B (en) * | 2018-06-28 | 2021-09-14 | 武汉天马微电子有限公司 | Touch display panel and touch display device |
| US11023085B2 (en) | 2019-03-07 | 2021-06-01 | Boe Technology Group Co., Ltd. | Touch panel and control method thereof, and display device |
| CN112241224A (en) * | 2019-07-19 | 2021-01-19 | 陕西坤同半导体科技有限公司 | Touch display substrate, flexible display screen and electronic device |
| CN110780773A (en) * | 2019-10-25 | 2020-02-11 | 京东方科技集团股份有限公司 | Touch substrate and display device |
| CN112099670B (en) * | 2020-09-11 | 2024-01-23 | 京东方科技集团股份有限公司 | Touch substrate, touch display panel and touch display device |
| KR20220087659A (en) * | 2020-12-17 | 2022-06-27 | 삼성디스플레이 주식회사 | Electronic device and driving methode of the same |
| CN112527154B (en) * | 2020-12-22 | 2022-08-19 | 湖北长江新型显示产业创新中心有限公司 | Touch control panel, touch control display panel and display device |
| CN112612375B (en) * | 2020-12-30 | 2023-08-08 | 安徽鸿程光电有限公司 | Touch panel, touch display and manufacturing method of touch display |
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| KR102077316B1 (en) * | 2012-11-14 | 2020-04-08 | 삼성디스플레이 주식회사 | flexible touch screen panel and flexible display device with the same |
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