CN112462975A - Touch panel, display panel and display device - Google Patents
Touch panel, display panel and display device Download PDFInfo
- Publication number
- CN112462975A CN112462975A CN202011388552.6A CN202011388552A CN112462975A CN 112462975 A CN112462975 A CN 112462975A CN 202011388552 A CN202011388552 A CN 202011388552A CN 112462975 A CN112462975 A CN 112462975A
- Authority
- CN
- China
- Prior art keywords
- touch
- metal
- layer
- material layer
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 179
- 239000002184 metal Substances 0.000 claims abstract description 179
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 53
- 239000011147 inorganic material Substances 0.000 claims abstract description 53
- 239000011368 organic material Substances 0.000 claims abstract description 37
- 230000002093 peripheral effect Effects 0.000 claims abstract description 28
- 238000005538 encapsulation Methods 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 12
- 238000005452 bending Methods 0.000 abstract description 16
- 239000010410 layer Substances 0.000 description 237
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 229910001868 water Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a touch panel, a display panel and a display device, wherein the touch panel is provided with a touch area and a peripheral area arranged around the touch area, and comprises an inorganic material layer, an organic material layer and a metal layer which are arranged in a stacking way; the metal layer is provided with a plurality of touch electrodes and a plurality of metal wires connected with the touch electrodes, the touch electrodes are arranged in the touch area, and the metal wires are arranged in the peripheral area; the inorganic material layer comprises a first part and a second part, the first part is located in the touch area, the orthographic projection of the first part in the stacking direction of the inorganic material layer, the organic material layer and the metal layer covers the touch area, and the orthographic projection of the second part in the stacking direction covers the metal wiring. The touch panel, the display panel and the display device provided by the embodiment of the invention can integrate bending and touch functions, and can reduce or avoid the risk of overlapping short circuit of metal wires.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch panel, a display panel, and a display device.
Background
With the development of display technology and the popularization of electronic products, people have higher and higher requirements on the functionality of display panels, and the bendable display panels are the current trends of display industry technology and market, and most of the bendable display panels are integrated with touch functions, so that the bendable touch panels come into play.
The existing touch panel with the bendable performance is usually made of organic materials through insulating layers in the touch layer in order to ensure the bending performance of the touch layer, so that the bending resistance can be improved, but the touch panel is easy to have a metal wiring lap short circuit, and the touch function is failed.
Disclosure of Invention
The embodiment of the invention provides a touch panel, a display panel and a display device, wherein the touch panel can integrate bending and touch functions, and can reduce or avoid the risk of metal wiring lap short circuit.
In one aspect, a touch panel is provided according to an embodiment of the present invention, and includes a touch area and a peripheral area surrounding the touch area, where the touch panel includes an inorganic material layer, an organic material layer, and a metal layer stacked together; the metal layer is provided with a plurality of touch electrodes and a plurality of metal wires connected with the touch electrodes, the touch electrodes are arranged in the touch area, and the metal wires are arranged in the peripheral area; the inorganic material layer comprises a first part and a second part, the first part is located in the touch area, the orthographic projection of the first part in the stacking direction of the inorganic material layer, the organic material layer and the metal layer covers the touch area, and the orthographic projection of the second part in the stacking direction covers the metal wiring.
According to an aspect of the embodiment of the present invention, the second portion is provided with a groove, and an orthographic projection of the groove in the stacking direction and an orthographic projection of the metal trace in the stacking direction are staggered.
According to an aspect of the embodiment of the present invention, there is a gap between an orthogonal projection of the groove in the stacking direction and an orthogonal projection of the metal trace in the stacking direction.
According to an aspect of the embodiment of the present invention, the number of the grooves is plural, and the plural grooves are spaced apart in the peripheral region.
According to an aspect of the embodiment of the present invention, an orthogonal projection of the side wall enclosing the groove in the stacking direction is a broken line or a curved line; or the orthographic projection of the side wall which encloses the groove in the stacking direction is at least one of a circle, an ellipse and a polygon.
According to an aspect of the embodiment of the present invention, the second portion is provided with a groove in a region between two adjacent metal lines.
According to an aspect of the embodiment of the invention, the metal layer is further formed with a connection terminal disposed in the peripheral region, and one end of the at least one metal trace away from the touch electrode is connected to the connection terminal.
According to an aspect of the embodiment of the invention, the orthographic projection of the second portion also covers the orthographic projection of the connection terminal in the stacking direction.
According to an aspect of the embodiment of the present invention, the second portion is formed with a groove in a region between adjacent two of the connection terminals.
According to an aspect of the embodiment of the present invention, the number of the metal layers is one, the number of the touch electrodes is multiple and the touch electrodes are arranged on the same layer, each touch electrode is connected with a metal trace, the metal layer is provided with an inorganic material layer on one side in the stacking direction, and the metal layer is provided with an organic material layer on the other side in the stacking direction.
According to an aspect of the embodiment of the invention, the number of the metal layers is two, at least one of the organic material layer and the inorganic material layer is respectively disposed between the two metal layers and on a side of the two metal layers away from each other, and the touch electrode and the metal trace are respectively formed on one of the metal layers or on the two metal layers.
According to an aspect of the embodiments of the present invention, the plurality of touch electrodes are formed on one of the two metal layers, a gap bridge is formed on the other of the two metal layers, the plurality of touch electrodes include two or more touch driving electrodes arranged in a matrix and two or more touch sensing electrodes arranged in a matrix, adjacent touch driving electrodes in a same matrix row are electrically connected through one of the connecting portion and the gap bridge, adjacent touch sensing electrodes in a same matrix column are electrically connected through the other of the connecting portion and the gap bridge, and the connecting portion is disposed on a same layer as the touch driving electrodes and the touch sensing electrodes.
According to an aspect of the embodiments of the present invention, the plurality of touch electrodes are formed on two metal layers, the plurality of touch electrodes include touch driving electrodes and touch sensing electrodes, the touch electrodes are formed on one of the two metal layers, and the touch sensing electrodes are formed on the other of the two metal layers.
On the other hand, according to an embodiment of the present invention, a display panel is provided, which includes the touch panel.
According to another aspect of the embodiment of the present invention, the display panel further includes a display structure, the display structure includes an array substrate, a light emitting layer, and an encapsulation layer, the touch panel is stacked on the encapsulation layer, and the inorganic material layer is located between the metal layer and the encapsulation layer.
In another aspect, a display device is provided according to an embodiment of the present invention, which includes the display panel described above.
According to the touch panel, the display panel and the display device provided by the embodiment of the invention, the touch panel is provided with a touch area and a peripheral area arranged around the touch area, the touch panel comprises an inorganic material layer, an organic material layer and a metal layer which are arranged in a stacking mode, and the metal layer can form a touch electrode positioned in the touch area and a metal wire positioned in the peripheral area. The organic material layer and the inorganic material layer can meet the protection requirement on the metal layer, and the bending performance of the touch panel can be guaranteed. Meanwhile, the first part of the inorganic material layer covers the touch area, the second part covers the metal wiring, and each touch electrode can be protected through the first part, so that the touch electrodes and the metal wiring are prevented from being corroded by water and oxygen, metal residues of the touch electrodes and the metal wiring during forming are reduced, and the problem that the touch function of the touch panel is invalid due to short circuit is effectively avoided.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic top view of a touch panel according to an embodiment of the invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
FIG. 5 is a partially enlarged view of a touch panel in a peripheral area according to another embodiment of the present invention;
FIG. 6 is a partially enlarged view of a touch panel in a peripheral area according to another embodiment of the present invention;
FIG. 7 is a partially enlarged view of a touch panel in a peripheral area according to still another embodiment of the present invention;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 1;
fig. 9 is a cross-sectional view of a touch panel in a peripheral area according to still another embodiment of the present invention;
fig. 10 is a cross-sectional view of a touch panel in a peripheral region according to still another embodiment of the present invention;
FIG. 11 is a top view of a touch panel according to still another embodiment of the present invention;
FIG. 12 is a cross-sectional view taken along the line E-E in FIG. 11;
FIG. 13 is a top view of a touch panel according to yet another embodiment of the present invention;
fig. 14 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention.
Wherein:
100-a touch panel; 100 a-a touch area; 100 b-a peripheral region; x-the stacking direction;
110-a layer of inorganic material; 111-a first part; 112-a second portion; 112 a-a groove;
120-a layer of organic material;
130-a metal layer; 131-touch electrodes; 131 a-touch drive electrodes; 131 b-touch sensing electrodes; 132-metal routing; 133-a connection terminal; 134-a connecting portion; 135-bridge crossing;
200-display structure; AA-display area; NA-Flexible region;
210-an array substrate; 211-a substrate; 212-an active layer; 213 — a first interlayer insulating layer; 214-a first conductive layer; 215-a second interlayer insulating layer; 216-a second conductive layer; 217-third interlayer insulating layer; 218-a third conductive layer; 219-a planarization layer;
220-a light emitting layer;
230-encapsulation layer.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following description is given with reference to the orientation words shown in the drawings, and does not limit the specific structures of the touch panel, the display panel, and the display device according to the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Because the organic material has good flexibility and is not easy to deform when being bent, in order to ensure the bending performance of the existing touch panel with the bending performance, the insulating layer used for insulating and protecting the metal layer is made of the organic material. Although the bending resistance can be improved, the bending resistance performance is also improved, but the corresponding defects exist, mainly, the organic material has poor water and oxygen resistance, and when the touch panel is used for a display panel, the touch panel is usually arranged on an encapsulation layer of a display structure, for example, a thin film encapsulation layer. And if water and oxygen act for a long time, the display panel applied to the touch panel has the risk of generating abnormal phenomena such as bulges and the like during the reliability test.
Based on the above technical problems, embodiments of the present invention provide a touch panel, a display panel and a display device, where the touch panel integrates bending and touch functions, and can reduce or avoid the risk of overlap short circuit. For better understanding of the present invention, the touch panel, the display panel and the display device according to the embodiments of the present invention are described in detail below with reference to fig. 1 to 14.
As shown in fig. 1 to 3, an embodiment of the invention provides a touch panel 100 having a touch area 100a and a peripheral area 100b surrounding the touch area 100 a. The touch panel 100 includes an inorganic material layer 110, an organic material layer 120, and a metal layer 130, which are stacked, the metal layer 130 is formed with a plurality of touch electrodes 131 and a plurality of metal traces 132 connected to the plurality of touch electrodes 131, the touch electrodes 131 are disposed in the touch area 100a, and the metal traces 132 are disposed in the peripheral area 100 b. The inorganic material layer 110 includes a first portion 111 located in the touch area 100a and a second portion 112 located in the peripheral area 100b, an orthogonal projection of the first portion 111 in the stacking direction X of the inorganic material layer 110, the organic material layer 120 and the metal layer 130 covers the touch area 100a, and an orthogonal projection of the second portion 112 in the stacking direction X covers the metal traces 132.
The touch panel 100, the organic material layer 120 and the inorganic material layer 110 provided by the embodiment of the invention can not only ensure the protection requirement on the metal layer 130, but also ensure the bending performance of the touch panel 100. The first portion 111 of the inorganic material layer 110 covers the touch area 100a, the second portion 112 covers the metal trace 132, each touch electrode 131 can be protected by the first portion 111, the metal trace 132 can be protected by the second portion 112, corrosion of the touch electrode 131 and the metal trace 132 by water and oxygen is avoided, metal residue of the touch electrode 131 and the metal trace 132 during molding can be reduced due to blocking of water and oxygen, and therefore the problem of touch function failure of the touch panel 100 caused by short circuit is effectively avoided.
In a reliability experiment of the display panel applied to the touch panel 100, the inorganic material layer 110 can further ensure that the metal layer 130 is not affected by water and oxygen, so that the metal layer is not easily peeled off, heating caused by resistance increase is avoided, and a touch effect is ensured.
In some optional embodiments, the second portion 112 of the inorganic material layer 110 is provided with a groove 112a, and an orthographic projection of the groove 112a in the stacking direction X is staggered from an orthographic projection of the metal trace 132 in the stacking direction X. Through the arrangement of the groove 112a, when the layer structures such as the inorganic material layer 110 are formed, stress between the inorganic material layer 110 and the organic material layer 120 and/or the metal layer 130 can be matched through the good stress release of the groove 112a, so that the inorganic material layer and the organic material layer are tightly attached to each other, the connection cohesiveness is further ensured, and the occurrence of the bulge phenomenon of the touch panel 100 in the forming process or in the high and low temperature environment change is avoided. Meanwhile, the grooves 112a and the metal traces 132 are arranged in a staggered manner, so that the protection effect on the metal traces 132 can be ensured, and the metal traces are not easily corroded by water and oxygen.
As an alternative embodiment, there is a gap between the orthographic projection of the groove 112a in the stacking direction X and the orthographic projection of the metal trace 132 in the stacking direction X. That is, the second portion 112 is to completely cover the metal trace 132 located in the peripheral area 100b, so that the metal trace 132 located in the peripheral area 100b can be completely covered by the second portion 112 of the inorganic material layer 110, and water and oxygen are effectively blocked, so that the metal layer 130 can effectively avoid short circuit between the metal traces 132 caused by metal residue occurring around the metal trace 132 in the process of forming the metal trace 132 by patterning, and the safety performance of the touch panel 100 is improved.
In some optional embodiments, the number of the grooves 112a may be multiple, the grooves 112a are distributed at intervals on the second portion 112 of the inorganic material layer 110, and the grooves 112a are disposed and distributed at intervals, so that the stress release requirements of the inorganic material layer 110 at different positions in the peripheral area 100b can be met, and the phenomena of bulging and the like caused by stress and the like during the molding and working of the touch panel 100 are avoided.
As shown in fig. 1 to 4, in some optional embodiments, an orthogonal projection of the side wall enclosing the groove 112a in the stacking direction X is a broken line, and optionally, the groove 112a may be disposed along an extending track of the metal trace 132.
As shown in fig. 5, in some embodiments, the orthographic projection of the sidewall enclosing the groove 112a in the stacking direction X may be a curve, which may be an arc curve, an elliptic arc curve, or a wavy line form using a plurality of arc splices as shown in fig. 5.
As shown in fig. 6 and 7, in some other examples, the orthogonal projection of the side wall enclosing the groove 112a in the stacking direction X may also be a circle or an ellipse, and of course, in some embodiments, it may also be a polygon, such as a quadrangle, a pentagon, etc.
The number of the grooves 112a between two adjacent metal traces 132 may be one, or certainly may be multiple, as long as the protection requirement for the metal traces 132 can be met, and the occurrence of the bulge phenomenon caused by the stress action in the forming process of the touch panel 100 or the reliability test process of the display panel to which the touch panel is applied can be avoided.
As shown in fig. 1 to fig. 7, as an optional implementation manner, the metal layer 130 is further formed with a connection terminal 133 disposed in the peripheral area 100b, and one end of the at least one metal trace 132 away from the touch electrode 131 is connected to the connection terminal 133. By providing the connection terminal 133, the touch electrode 131 is conveniently connected to a corresponding driver IC, so as to control the touch electrode 131 and collect a touch position. Moreover, the connection terminals 133 and the metal traces 132 are disposed on the same layer, which can simplify the molding process of the touch panel 100 and ensure the connection strength between the connection terminals 133 and the corresponding metal traces 132.
In some optional embodiments, the orthographic projection of the second portion 112 also covers the orthographic projection of the wire terminals 133 in the stacking direction X. Since the connection terminals 133 are also patterned from the metal layer 130 and are used to connect the metal traces 132 with the driving IC, it is also important how to reduce the probability of short circuit between the connection terminals 133. In the touch panel 100 provided in the embodiment of the invention, the orthographic projection of the second portion 112 also covers the orthographic projection of the connection terminal 133 in the stacking direction X, so as to block water and oxygen on one side of the inorganic material layer 110, such as from the side of the encapsulation layer, thereby avoiding a short circuit between two adjacent connection terminals 133 caused by metal residue formed around the connection terminal 133, and further avoiding a problem of touch function failure of the touch panel 100 due to the short circuit.
As an alternative embodiment, the second portion 112 is formed with a groove 112a in a region between two adjacent connection terminals 133. Through the above arrangement, the stress release requirement of the touch panel 100 in the molding process can be further optimized.
In order to ensure the strength requirement of the touch panel 100 and facilitate the molding process of the touch panel 100, the groove 112a may be optionally filled with the organic material layer 120.
In some optional embodiments of the touch panel 100 provided in the above embodiments of the present invention, the number of the metal layers 130 may be two, when the number of the metal layers 130 is two, at least one of the organic material layer 120 and the inorganic material layer 110 is respectively disposed between the two metal layers 130 and on a side of the two metal layers 130 away from each other, and the touch electrode 131 and the metal trace 132 are respectively formed on one of the metal layers 130 or on the two metal layers 130. Through the above arrangement, the touch and bending requirements of the touch panel 100 can be satisfied.
For example, the plurality of touch electrodes 131 may be formed on one metal layer 130 of the two metal layers 130, a bridge 135 is formed on the other metal layer 130 of the two metal layers 130, and at least two touch electrodes 131 are electrically connected through the bridge 135.
In some optional embodiments, the plurality of touch electrodes 131 includes two or more touch driving electrodes 131a arranged in a matrix and two or more touch sensing electrodes 131b arranged in a matrix, adjacent touch driving electrodes 131a in the same matrix row are electrically connected through one of the connection portion 134 and the bridge 135, adjacent touch sensing electrodes 131b in the same matrix column are electrically connected through the other of the connection portion 134 and the bridge 135, and the connection portion 134 is disposed on the same layer as the touch driving electrodes 131a and the touch sensing electrodes 131 b.
As shown in fig. 8 and 9, optionally, when the metal layer 130 is two layers, the metal trace 132 and the connection terminal 133 may be formed on one of the metal layers 130. Alternatively, the metal trace 132 may be disposed on the same layer as the plurality of touch electrodes 131 to form a structural form as shown in fig. 8. Of course, in some embodiments, the metal trace 132 may also be disposed in the same layer as the bridge 135, forming the structure shown in fig. 9. As long as the connection requirement between the touch electrode 131 and the driving IC can be satisfied. When the metal layer 130 is two layers, the touch panel 100 may be in a self-capacitance form or a mutual capacitance form.
Of course, when the metal layer 130 is two layers, the metal traces 132 and the connection terminals 133 are disposed on the same layer as one of the metal layers 130, which is only an alternative embodiment. As shown in fig. 10, in some embodiments, two metal layers 130 may be stacked on each other in a predetermined area to form a metal trace 132 and a connection terminal 133. Through the above arrangement, the impedance of the metal trace 132 can be reduced, and the touch effect of the touch panel 100 is optimized.
It is understood that, when the metal layer 130 is two metal layers 130, the touch electrode 131 is not limited to be formed on one metal layer 130. As shown in fig. 11 and 12, in some embodiments, a plurality of touch electrodes 131 may be formed on the two metal layers 130. Similarly, the touch electrodes 131 may include a touch driving electrode 131a and a touch sensing electrode 131b, the touch electrode 131 is formed on one metal layer 130 of the two metal layers 130, and the touch sensing electrode 131b is formed on the other metal layer 130 of the two metal layers 130.
For example, one metal layer 130 of the two metal layers 130 may include a plurality of vertical electrodes spaced apart in the horizontal direction, and the other metal layer 130 of the two metal layers 130 may include a plurality of horizontal electrodes spaced apart in the vertical direction, where the horizontal electrodes and the vertical electrodes cross each other to form a capacitor, where the horizontal electrodes and the vertical electrodes cross each other to form a touch driving electrode 131a and a touch sensing electrode 131 b. The touch driving electrode 131a and the touch sensing electrode 131b may be respectively connected to a metal trace 132, when an excitation signal is applied to the touch driving electrode 131a through the metal trace 132, due to existence of mutual capacitance, the excitation signal may be sensed and received on the touch sensing electrode 131b, and a magnitude and a phase shift of the received signal are related to a frequency of the excitation signal and a magnitude of the mutual capacitance, that is, a determination of a touch position may be determined by a capacitance between the touch driving electrode 131a and the touch sensing electrode 131 b. Through the above arrangement, the touch function and bending function requirements of the touch panel 100 can be satisfied.
It should be noted that, in the touch panel 100 provided in the embodiment of the invention, when the metal layer 130 is two layers, the included inorganic material layer 110 may be one layer, and when the included inorganic material layer 110 is one layer, the inorganic material layer 110 may be located on a side of one metal layer 130 of the two metal layers, which is away from the other metal layer 130, and of course, may also be located between the two metal layers 130.
For example, when the metal layer 130 is two layers, the inorganic material layer 110 may be one layer, the organic material layer 130 may be three layers, and the arrangement of the layers along the stacking direction X may be the inorganic material layer 110, the organic material layer 120, the metal layer 130, and the organic material layer 120. Of course, this is an arrangement, in some embodiments, the position of the inorganic material layer may also be adjusted as needed, for example, in some embodiments, the arrangement of each layer of the touch panel 100 along the stacking direction X may be the organic material layer 120, the inorganic material layer 110, the metal layer 130, the organic material layer 120, the metal layer 130, and the organic material layer 120.
Of course, the arrangement of the inorganic material layer 110, the organic material layer 120 and the metal layer 130 is only some optional embodiments, and the inorganic material layer 110 is not limited to be one layer, and the organic material layer 120 is not limited to be three layers. The number of layers of the inorganic material layer 110 and the organic material layer 120 and the arrangement manner between the inorganic material layer and the metal layer 130 may be set according to the bending performance requirement of the touch panel 100, the number of layers of the metal layer 120, and the protection level against water and oxygen, which are not described herein.
It is understood that, in the touch panel 100 provided in the above embodiments, the number of the metal layers 130 is two, which is only an optional implementation manner. As shown in fig. 13, in some embodiments, the number of the metal layers 130 is one, the number of the touch electrodes 131 is multiple and disposed at the same layer, and each touch electrode 131 is connected to a metal trace 132. The metal layer 130 is provided with the inorganic material layer 110 on one side in the stacking direction X, and the metal layer 130 is provided with the organic material layer 120 on the other side in the stacking direction X. That is, the touch panel 100 may adopt a self-capacitance touch form, each touch electrode 131 is connected to the driver IC through a metal trace 132, the metal trace 132 is used to send a touch driving signal sent by the driver IC to each touch electrode 131, and transmit a touch sensing signal generated by the touch electrode 131 back to the driver IC through the same metal trace 132, so as to meet the touch function requirement of the touch panel 100. Optionally, when the metal layer 130 is a single layer, the metal trace 132, the connection terminal 133 and the touch electrode 131 are disposed on the same layer.
As an alternative implementation manner, in the touch panel 100 provided in each of the above embodiments of the invention, the inorganic material layer 110 may be made of one or a combination of two or more of silicon nitride, silicon oxide, and silicon oxynitride, the organic material layer 120 may be made of OC glue or other materials, and the metal layer 130 may be made of molybdenum, aluminum, copper or other metals or alloys or other materials.
As shown in fig. 14, on the other hand, an embodiment of the present invention further provides a display panel, where the display panel includes the touch panel 100 provided in the foregoing embodiments, and the touch panel can meet the touch and bending requirements of the display panel, and can avoid the occurrence of a display panel failure caused by a short circuit of the touch panel during a reliability test or an operation process of the display panel.
In some optional embodiments, the display panel provided in the embodiments of the present invention further includes a display structure 200, the display structure 200 includes an array substrate 210, a light emitting layer 220, and an encapsulation layer 230, the touch panel 100 is stacked with the encapsulation layer 230, and the inorganic material layer 110 is disposed between the metal layer 130 and the encapsulation layer 230. Through the above arrangement, water and oxygen in the packaging layer 230 can be separated through the inorganic material layer 110, so that the touch panel 100 is prevented from short circuit caused by metal residue or bulge between the adjacent metal wires 132 when being formed or the display panel is subjected to reliability test, and the performance of the display panel is optimized.
In some optional embodiments, the array substrate 210 of the display structure 200 has a plurality of pixel driving circuits distributed in an array for driving the light emitting layer 220, and the pixel driving circuits include transistors. Illustratively, the array substrate 210 may include a substrate 211 and device layers disposed on the substrate 211, the device layers including an active layer 212, a first interlayer insulating layer 213, a first conductor layer 214, a second interlayer insulating layer 215, a second conductor layer 216, a third interlayer insulating layer 217, a third conductor layer 218, and a planarization layer 219, which are stacked. The active layer 212 is used to form an active region of each transistor, the first conductive layer 214 is used to form a gate electrode of each transistor, the second conductive layer 216 and the first conductive layer 214 together form a storage capacitor of the array substrate 210, and the third conductive layer 218 is used to form a source electrode and a drain electrode of each transistor.
The light emitting layer 220 may include a plurality of sub-pixels, each of which includes an anode, a light emitting material and a cathode, the light emitting layer 220 is disposed on the planarization layer 219, and the anodes are connected to the transistors, so that the sub-pixels are driven by the array substrate 210 to meet the display requirements of the display panel.
Alternatively, the encapsulation layer 230 may be a thin film encapsulation layer and is disposed on the side of the light emitting layer 220 away from the array substrate 210, and the touch panel 100 is stacked on the encapsulation layer 230. In some optional embodiments, an inorganic material layer 110 and an organic material layer 120 may be stacked between the encapsulation layer 230 and the metal layer 130 of the touch panel 100, and the inorganic material layer 110 may be disposed near one side of the encapsulation layer 230 and stacked on the encapsulation layer 230. Of course, in some embodiments, the inorganic material layer 110 may be disposed away from the package layer 230 such that the organic material layer 120 is located between the inorganic material layer 110 and the package layer 230, as long as the water and the oxygen from the package layer 230 can be blocked, and the water and the oxygen from the package layer 230 on the side close to the package layer 230 and the water and the oxygen from the external environment on the side away from the package layer 230 in the stacking direction X are prevented from simultaneously acting on the metal layer 130 of the touch panel 100, so as to reduce the probability of short circuit between the metal traces 132 located in the peripheral area 100 b.
In some optional embodiments, the display structure 200 may include a display area AA and a bendable area, the touch area 100a of the touch panel 100 is opposite to the display area AA, and the peripheral area 100b thereof is opposite to the bendable area NA. The peripheral region 100b can be bent according to the bending requirement. Optionally, the metal traces 132 may be directly connected to the connection lines formed on the third conductive layer 218 on the array substrate 210 or connected to the connection lines through the connection terminals 133, so as to meet the binding requirement and facilitate connection with the driver IC, thereby ensuring control over the array substrate 210 of the display panel and the touch panel 100.
As an optional implementation manner, an embodiment of the present invention further provides a display device, where the display device includes the display panel provided in each of the above embodiments. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a notebook computer, a digital photo frame, a navigator and the like, and can be integrated with a photosensitive assembly such as a camera and the like. The display device provided by the embodiment of the invention comprises the display panel in any embodiment, so that the display device has the advantages of difficulty in short circuit, high safety and the like.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A touch panel is provided with a touch area and a peripheral area arranged around the touch area, and is characterized by comprising an inorganic material layer, an organic material layer and a metal layer which are arranged in a stacking way;
the metal layer is provided with a plurality of touch electrodes and a plurality of metal wires connected with the touch electrodes, the touch electrodes are arranged in the touch area, and the metal wires are arranged in the peripheral area;
the inorganic material layer comprises a first part and a second part, the first part is located in the touch area, the orthographic projection of the first part in the stacking direction of the inorganic material layer, the organic material layer and the metal layer covers the touch area, and the orthographic projection of the second part in the stacking direction covers the metal wiring.
2. The touch panel of claim 1, wherein the second portion is provided with a groove, and an orthographic projection of the groove in the stacking direction and an orthographic projection of the metal trace in the stacking direction are staggered;
preferably, there is a gap between an orthogonal projection of the groove in the stacking direction and an orthogonal projection of the metal trace in the stacking direction.
3. The touch panel of claim 2, wherein the number of the grooves is plural, and the plural grooves are distributed at intervals in the peripheral region;
and/or the orthographic projection of the side wall which encloses to form the groove in the stacking direction is a broken line or a curve;
and/or the second part is provided with the groove in the area between two adjacent metal wires.
4. The touch panel of claim 2, wherein the metal layer further forms a connection terminal disposed in the peripheral region, and one end of at least one of the metal traces, which is away from the touch electrode, is connected to the connection terminal;
preferably, in the stacking direction, an orthogonal projection of the second portion also covers an orthogonal projection of the connection terminal;
preferably, the second portion is formed with the groove in a region between adjacent two of the connection terminals; or the orthographic projection of the side wall which encloses the groove in the stacking direction is at least one of a circle, an ellipse and a polygon.
5. The touch panel according to claim 1, wherein the number of the metal layers is one, the number of the touch electrodes is plural and the touch electrodes are arranged on the same layer, each of the touch electrodes is connected with one of the metal traces, the inorganic material layer is arranged on one side of the metal layers in the stacking direction, and the organic material layer is arranged on the other side of the metal layers in the stacking direction.
6. The touch panel according to claim 1, wherein the number of the metal layers is two, at least one of the organic material layer and the inorganic material layer is disposed between the two metal layers and on a side of the two metal layers away from each other, and the touch electrode and the metal trace are formed on one of the metal layers or on both of the metal layers.
7. The touch panel according to claim 6, wherein the plurality of touch electrodes are formed on one of the two metal layers, a bridge is formed on the other of the two metal layers, the plurality of touch electrodes include two or more touch driving electrodes arranged in a matrix and two or more touch sensing electrodes arranged in a matrix, adjacent touch driving electrodes in a same matrix row are electrically connected through one of a connecting portion and the bridge, adjacent touch sensing electrodes in a same matrix column are electrically connected through the other of the connecting portion and the bridge, and the connecting portion is disposed on a same layer as the touch driving electrodes and the touch sensing electrodes;
or, the touch electrodes are formed on the two metal layers, the touch electrodes include a touch driving electrode and a touch sensing electrode, the touch electrodes are formed on one of the two metal layers, and the touch sensing electrode is formed on the other of the two metal layers.
8. A display panel, comprising: the touch panel according to any one of claims 1 to 7.
9. The display panel of claim 8, further comprising a display structure, wherein the display structure comprises an array substrate, a light emitting layer and an encapsulation layer, the touch panel is stacked on the encapsulation layer, and the inorganic material layer is located between the metal layer and the encapsulation layer.
10. A display device characterized by comprising the display panel according to claim 8 or 9.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388552.6A CN112462975A (en) | 2020-12-02 | 2020-12-02 | Touch panel, display panel and display device |
| CN202111048711.2A CN113687737B (en) | 2020-11-20 | 2021-09-08 | Touch panel, display panel and display device |
| KR1020237013163A KR20230061554A (en) | 2020-11-20 | 2021-10-19 | Touch panel, display panel and display device |
| PCT/CN2021/124547 WO2022105510A1 (en) | 2020-11-20 | 2021-10-19 | Touch control panel, display panel and display apparatus |
| US18/169,395 US20230195267A1 (en) | 2020-11-20 | 2023-02-15 | Touch panel, display panel and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388552.6A CN112462975A (en) | 2020-12-02 | 2020-12-02 | Touch panel, display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112462975A true CN112462975A (en) | 2021-03-09 |
Family
ID=74805707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011388552.6A Pending CN112462975A (en) | 2020-11-20 | 2020-12-02 | Touch panel, display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112462975A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951096A (en) * | 2021-04-07 | 2021-06-11 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof |
| CN113097256A (en) * | 2021-03-19 | 2021-07-09 | 武汉华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| CN114115614A (en) * | 2021-11-30 | 2022-03-01 | 合肥维信诺科技有限公司 | Touch panel and display device |
-
2020
- 2020-12-02 CN CN202011388552.6A patent/CN112462975A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097256A (en) * | 2021-03-19 | 2021-07-09 | 武汉华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| CN113097256B (en) * | 2021-03-19 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| CN112951096A (en) * | 2021-04-07 | 2021-06-11 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof |
| CN112951096B (en) * | 2021-04-07 | 2022-11-11 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof |
| CN114115614A (en) * | 2021-11-30 | 2022-03-01 | 合肥维信诺科技有限公司 | Touch panel and display device |
| WO2023098113A1 (en) * | 2021-11-30 | 2023-06-08 | 合肥维信诺科技有限公司 | Touch panel and display device |
| US12159005B2 (en) | 2021-11-30 | 2024-12-03 | Hefei Visionox Technology Co., Ltd. | Touch panel and display apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11980073B2 (en) | Display device | |
| CN108766979B (en) | Display panel and display device | |
| KR20230049523A (en) | display panel | |
| CN112416171A (en) | Touch panel, display panel and display device | |
| US8405809B2 (en) | Lead line structure and display panel having the same | |
| CN106847774B (en) | Display panel and preparation method thereof | |
| US11906859B2 (en) | Display substrate and display device | |
| CN112462975A (en) | Touch panel, display panel and display device | |
| CN111724742B (en) | Display panel, preparation method thereof and display device | |
| US20210313544A1 (en) | Display device | |
| CN112349755A (en) | Display device and method for manufacturing the same | |
| US20230195267A1 (en) | Touch panel, display panel and display apparatus | |
| CN113517262A (en) | Display panel, method for making the same, and display device | |
| KR100708828B1 (en) | Electro-optical device and electronic apparatus | |
| JP2009115940A (en) | Liquid crystal panel | |
| US11954295B2 (en) | Touch panel, display panel, and display device | |
| CN113192893A (en) | Thin film transistor array substrate and manufacturing method thereof | |
| JP2006317517A (en) | Display apparatus and integrated circuit | |
| KR20060052885A (en) | Electronic device with wiring terminals | |
| TW202334716A (en) | Display panel and manufacturing method thereof | |
| CN111090201B (en) | Display panels and electronic devices | |
| KR20220095833A (en) | Display device | |
| CN219352274U (en) | Array substrate and display panel | |
| EP4489550A1 (en) | Display device and method of fabricating display device | |
| US20240276844A1 (en) | Display substrate and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210309 |