CN108897454B - Touch panel and manufacturing method thereof, display panel integrated with touch and display device - Google Patents
Touch panel and manufacturing method thereof, display panel integrated with touch and display device Download PDFInfo
- Publication number
- CN108897454B CN108897454B CN201810717495.8A CN201810717495A CN108897454B CN 108897454 B CN108897454 B CN 108897454B CN 201810717495 A CN201810717495 A CN 201810717495A CN 108897454 B CN108897454 B CN 108897454B
- Authority
- CN
- China
- Prior art keywords
- metal
- bridge
- touch
- layer
- electrode layer
- 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.)
- Active
Links
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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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)
- Microelectronics & Electronic Packaging (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a touch panel and a manufacturing method thereof, a touch integrated display panel and a display device.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a touch panel and a manufacturing method thereof, a display panel integrating touch control and a display device.
Background
With the continuous development of scientific technology, more and more electronic devices with touch functions are widely applied to daily work and life of people, bring great convenience to the daily life and work of people, and become an indispensable important tool in the life of people at present.
The main component of the electronic device for implementing the touch function is a touch panel. The touch panel detects a touch position through the touch electrode layer. Generally, the touch electrode layer needs to be configured into a specific electrode pattern to form a plurality of touch electrodes, and the touch electrodes need to be electrically connected with each other through a bridge prepared by another conductive layer.
In the existing touch panel, the problem of open circuit of the bridge is easily caused when the bridge is prepared, and the yield of the touch panel is influenced.
Disclosure of Invention
In order to solve the above problems, the technical solution of the present invention provides a touch panel, a manufacturing method thereof, a display panel integrated with touch, and a display device, which solve the problem that a bridge is easily broken and improve the yield of products.
In order to achieve the above purpose, the invention provides the following technical scheme:
a touch panel, the touch panel comprising:
a substrate;
the touch electrode layer and the bridge electrode layer are arranged on the substrate in a stacked mode;
the insulating layer is positioned between the touch electrode layer and the bridge electrode layer;
the touch electrode layer comprises a plurality of touch electrodes;
the bridge-crossing electrode layer comprises a plurality of bridge-crossing bridges and an auxiliary conductive part, the bridge-crossing bridges are metal connecting bridges and are used for connecting two adjacent touch electrodes, and the auxiliary conductive part is insulated from the bridge-crossing bridges.
The invention also provides a manufacturing method for preparing the touch panel, which is characterized by comprising the following steps:
providing a substrate;
forming a patterned first conductive layer on the surface of the substrate;
forming an insulating layer on the surface of the first conductive layer;
forming a second patterned conductive layer on the surface of the insulating layer;
one of the first conductive layer and the second conductive layer is a touch electrode layer, and the other one is a bridge electrode layer; the touch electrode layer comprises a plurality of touch electrodes; the bridge-crossing electrode layer comprises a plurality of bridge-crossing electrodes and an auxiliary conductive part, the bridge-crossing electrodes are used for connecting two adjacent touch electrodes, and the auxiliary conductive part is insulated from the bridge-crossing electrodes.
The invention also provides a display device comprising the display panel.
As can be seen from the above description, in the touch panel and the manufacturing method thereof, the touch integrated display panel, and the display device provided in the technical solution of the present invention, the bridge-spanning electrode layer is provided to include a plurality of bridges and the auxiliary conductive portion, two adjacent touch electrodes in two adjacent touch electrode layers are connected by the bridges, and the metal wire metal coverage of the bridge-spanning electrode layer can be increased by the auxiliary conductive portion, so that the risk of circuit breaking of the bridges is reduced or avoided, and the yield of the product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a top view of a touch panel according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the touch panel shown in FIG. 1 along the A-A' direction;
FIG. 3 is a partially enlarged view of an electrode pattern in a dashed circle region of the touch panel shown in FIG. 1;
FIG. 4 is a schematic view of the electrode dividing regions of the electronic pattern of FIG. 3;
fig. 5 is a schematic structural diagram of an electrode pattern of a touch panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electrode pattern of another touch panel according to an embodiment of the invention;
FIG. 7 is a schematic flow chart of a manufacturing method according to an embodiment of the present invention;
fig. 8 is a top view of a display panel according to an embodiment of the invention;
fig. 9 is a cross-sectional view of a display panel according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the touch panel which needs to be connected with the touch electrode through the bridge, a bridge electrode layer for preparing the bridge is a metal layer. The conventional process for patterning the metal layer is dry etching, but since the metal coverage of the bridge-spanning electrode layer is low after the bridge-spanning electrode layer is patterned to form the bridge, in the corresponding area of the whole touch panel, only partial area of the bridge is crossed, and most area is the vacant area without the bridge, so the local uniformity of the patterned bridge electrode layer is poor, when the bridge-spanning electrode layer is patterned by dry etching, only a few parts of bridge-spanning patterns need to be reserved on the whole bridge-spanning electrode layer by dry etching, but due to the limitation of the current dry etching process conditions, for a very fine pattern or a pattern with sparse distribution, the etching pattern, the etching rate and the etching degree cannot be accurately controlled, so that the problem of open circuit of a metal wire used as a bridge is easily caused, and the yield is influenced.
In order to solve the above problems, according to the technical scheme of the embodiment of the invention, the auxiliary conductive part on the same layer as the bridge-spanning electrode layer is added, and the auxiliary conductive part and the bridge-spanning electrode are simultaneously prepared by the bridge-spanning electrode layer, so that the metal coverage rate and the pattern uniformity of the bridge-spanning electrode layer after patterning can be improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 4, fig. 1 is a top view of a touch panel according to an embodiment of the present invention, fig. 2 is a sectional view of the touch panel shown in fig. 1 along a direction a-a', fig. 3 is a partial enlarged view of an electrode pattern in a dotted circle region of the touch panel shown in fig. 1, and fig. 4 is a schematic diagram of an electrode division region of an electronic pattern shown in fig. 3, the touch panel according to an embodiment of the present invention includes: a substrate 11; the touch electrode layer and the bridge electrode layer are arranged on the substrate 11 and are arranged in a stacked mode; and the insulating layer 12 is positioned between the touch electrode layer and the bridge electrode layer.
The touch electrode layer comprises a plurality of touch electrodes 13; the bridge-crossing electrode layer comprises a plurality of bridge crossings 14 and an auxiliary conductive portion 15, the bridge crossings 14 are metal connecting bridges and are used for connecting two adjacent touch electrodes 13, and the auxiliary conductive portion 15 is insulated from the bridge crossings 14. The surface of the bridge electrode layer can be covered with an insulating protective layer.
Specifically, as shown in fig. 1 and 2, the electrode layer includes a plurality of touch electrodes 13, and the plurality of touch electrodes 13 are divided into a plurality of first electrode channels Tx and second electrode channels Rx. Each first electrode channel TX includes a plurality of touch electrodes 13 arranged along a first direction, and each second electrode channel RX includes a plurality of touch electrodes 13 arranged along a second direction, where the first direction is perpendicular to the second direction.
It should be noted that, although the auxiliary conductive portion 15 and the overpass 14 shown in the drawings in the present embodiment are different in filling pattern, the auxiliary conductive portion 15 and the overpass 14 are made of the same conductive material in the same layer, and are made of the same conductive material in the same layer.
In the touch panel according to the embodiment of the present invention, the touch electrode layer may be an ITO layer, and each touch electrode 13 is an ITO, or each touch electrode 13 may be a metal grid. In the embodiment of the present invention, it is preferable that the touch electrode 13 is a metal grid. On the one hand, the metal grid has less impedance for the ITO, and on the other hand, the metal grid can be better be applicable to flexible bendable touch panel, for the ITO electrode, has better bending characteristic. Specifically, the touch electrode 13 also includes a metal grid formed by a plurality of intersecting metal lines 22.
When the touch electrode 13 formed by the metal mesh is adopted, in the bridge-crossing electrode layer, the bridge-crossing 14 at least includes one metal bridge wire 25.
Optionally, the metal bridge line 25 is overlapped with the metal line 22 of the metal mesh, so as to avoid the influence of the bridge 14 on the transmittance of the touch electrode 13.
However, the structure of the bridge 14 with the metal bridge line further reduces the metal coverage of the bridge electrode layer compared with the conventional planar bridge structure, so that the uniformity of the distribution of the bridge electrode layer is worse, that is, compared with the conventional bulk ITO bridge or the bulk metal conductive bridge, the bridge 14 with the metal bridge line 25 structure has a smaller size of the linear pattern, and the open circuit problem caused by the over-etching is more likely to occur. In the technical scheme of the embodiment of the invention, the auxiliary conductive part 15 on the same layer as the bridge 14 is added, so that the metal coverage rate and the local pattern uniformity of the bridge-crossing electrode layer can be improved, and the problem of open circuit caused by over-etching is avoided.
In the embodiment of the present invention, one end of the metal bridge line 25 is connected to one of the touch electrodes through at least two through holes 26 penetrating through the insulating layer, and the other end of the metal bridge line is connected to the other touch electrode through at least two through holes 26 penetrating through the insulating layer. In the manner shown in fig. 3 and 4, one of the bridges 14 includes two metal bridge wires 25 for connecting the touch electrode P1 and the touch electrode P3. According to the grid structure of the touch electrode layer, the bridge span 14 is provided with a plurality of metal bridge wires 25 which are arranged in parallel, the metal bridge wires 25 are arranged opposite to the metal wires 22 in the metal grid and do not exceed the range of the corresponding metal wires 22, and compared with the traditional planar bridge span structure, the bridge span 14 matched with the touch electrode layer with the metal grid is designed in the technical scheme of the invention, so that the light transmittance of the metal grid is not influenced. And the metal bridge line 25 is arranged on the basis of the electrode pattern of the metal grid, the metal bridge line 25 is matched with the metal line 22, the position of the metal ball bridge line 25 does not need to be independently arranged, only the metal bridge line 25 needs to be arranged at the position of the metal line 22 corresponding to the two touch electrodes 13 needing to be bridged, and the metal bridge line 25 is arranged on the basis of the metal line 22 of the metal grid.
In order to clearly illustrate the hierarchical relationship of the components in the different electrode layers in the touch panel, only one metal trace segment 21 of the auxiliary conductive part 15 is shown in fig. 1, the actual size is not shown, and the other metal trace segments 21 are not shown. In an actual product, the metal wire segment 21 matches the size of the metal wire 22 of the touch electrode 13.
The upper touch electrode layer may be disposed between the substrate 11 and the bridge electrode layer, or the bridge electrode layer may be disposed between the touch electrode layer and the substrate 11.
In the embodiment of the present invention, the metal line segment 21 is arranged to be overlapped with the metal line 22, that is, the orthographic projection of the metal line segment 21 on the substrate 11 is located in the area where the metal line 22 is located, so that the metal line segment 21 can be prevented from occupying an extra light-transmitting area. Therefore, the orthographic projection of the metal wire segment 21 on the metal grid is located in the area where the metal wire 22 is located, so that the influence of a bridge electrode layer formed later on the light transmittance of the touch electrode layer is avoided.
In the embodiment of the present invention, the auxiliary conductive portion 15 includes a plurality of metal wire segments 21 distributed separately. The auxiliary conductive part 15 is provided with a plurality of metal line segments 21 which are separately distributed, so that the metal coverage rate of the patterned bridge-crossing electrode layer can be increased, and the local nonuniformity of the patterned bridge-crossing electrode layer can be reduced by the distribution of the metal line segments 21.
The lengths of the adjacent metal routing sections 21 are different; and/or the extending directions of the adjacent metal line sections 21 are different. The number of the metal routing segments 21, the length of the metal routing segments 21 and the layout position of the metal routing segments 21 can be designed according to requirements. The metal routing segment with large length can be avoided by setting the length and the extending direction of the metal routing segment 21, and the problem of moire fringes caused by the design of the metal routing segment 21 is avoided.
When the touch electrode layer is a metal grid, the metal grid comprises a plurality of first metal wires 23 arranged in parallel; the first metal line 23 extends in a first direction X; a group of second metal lines 24 is arranged between any two adjacent first metal lines 23, each group of second metal lines 24 has a plurality of second metal lines 24 arranged in parallel, the second metal lines 24 extend along a second direction Y, the first direction X is perpendicular to the second direction Y, and the second metal lines 24 are connected with at least one adjacent first metal line 23; in the second direction Y, the second metal lines 24 in two adjacent groups of second metal lines 24 are arranged in a staggered manner. The first metal line 23 is divided into a plurality of separate sub-segments.
Each first metal line 23 is divided into a plurality of separated subsections, and the metal lines in two adjacent groups of second metal lines 24 are arranged in a staggered manner, so that the problem that long lines only appear in grids can be avoided, and then moire fringes appear in image display can be avoided.
In the embodiment of the invention, in the arrangement of the bridge-crossing electrode layer, the metal line segment 21 of the auxiliary conductive part 15 is over against the metal line 22 in the touch electrode layer, and does not exceed the over-against metal line 22, so that the metal line segment 21 is arranged on the basis of the metal line 22 and matched with the metal line 22, the metal line segment 21 in the bridge-crossing electrode layer is arranged on the basis of the metal line 22 of the metal grid in the touch electrode layer, the layout of the metal line segment 21 is not required to be independently laid, the transmittance of the metal grid is not reduced, and the problem of moire is not caused by the metal line segment 21 laid on the basis of the metal line 22 without moire. The metal bridge lines 25 in the bridge span 14 are arranged based on the same principle, and the metal bridge lines 25 do not need to be arranged independently, so that the transmittance of the metal grids is not reduced, and the Moire problem is not caused. Moreover, because the metal routing segments 21 and the metal bridge lines 25 are all arranged based on the metal lines 22 in the metal grid, and because the metal lines 22 in the metal grid are uniformly arranged according to the touch design requirement, the metal routing segments 21 and the metal bridge lines 25 which are arranged corresponding to the metal lines 22 in the bridge-crossing electrode layer have better local uniformity.
In the embodiment shown in fig. 3 and 4, the extending direction of a part of the metal line segments 21 is a first direction X, and the extending direction of another part of the metal line segments is a second direction Y, where the first direction X is not parallel to the second direction Y. The first direction X and the second direction Y are both parallel to the substrate 11 of the touch panel and perpendicular to each other. In other embodiments, the first direction X and the second direction Y may not be perpendicular.
In this manner, in a part of the metal routing segments 21 extending along the first direction X, the metal routing segments 21 overlap with sub-segments of the first metal line 23, and each metal routing segment 21 corresponds to one sub-segment of the first metal line 23 and does not exceed the range of the corresponding sub-segment; in another part of the metal line segments 21 extending along the second direction Y, the metal line segments 21 overlap with the second metal lines 24, and each metal line segment 21 corresponds to one second metal line 24.
In the manner shown in fig. 1, 3 and 4, four touch electrodes P1, P2, P3 and P4 are shown, the metal wires 22 of the touch electrode P2 and the touch electrode P4 are connected in the same layer, and the touch electrode P1 and the touch electrode P3 are connected through the bridge 14. Since the metal lines 22 are dense in the grid electrode, in order to show the area division of the four touch electrodes in the electrode pattern, the division boundaries of the four touch electrodes are shown by dotted lines in fig. 4, it should be noted that the dotted lines are only used for illustrating the division boundaries of the four touch electrodes, and the dotted lines do not exist in an actual product.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electrode pattern of a touch panel according to an embodiment of the present invention, in the manner shown in fig. 5, in the auxiliary conductive portion 15, the extending directions of the metal wire segments 21 are all the same and are all the first direction X. In this manner, the metal line segments 21 overlap sub-segments of the first metal line 23, and each metal line segment 21 corresponds to one sub-segment of the first metal line 23 and does not exceed the range of the corresponding sub-segment.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an electrode pattern of another touch panel according to an embodiment of the present invention, in the manner shown in the diagram, in the auxiliary conductive portion 15, the extending directions of the metal wire segments 21 are all the same and are all the second direction Y. In this manner, the metal line segments 21 are overlapped with the second metal lines 24, and each metal line segment 21 corresponds to one second metal line 24. In this way, as described above, it is not necessary to separately lay out the metal routing segments 21 so as not to reduce the transmittance of the metal grid, and the moire problem is not caused, and the metal routing segments 21 are laid out based on the second metal lines 24, so that the metal routing segments 21 in the bridge-crossing electrode layer have better local uniformity, and the influence of the metal routing segments 21 on the local load of the touch electrode is avoided.
In the touch panel of the embodiment of the invention, in the bridge-crossing electrode layer, the metal coverage rate is a first metal coverage rate; in the touch electrode layer, the metal coverage rate is a second metal coverage rate; the first metal coverage is greater than 3% and less than 99% of the second metal coverage. The metal coverage is an area percentage of the patterned metal layer relative to the touch panel. The inventor researches and discovers that for a traditional touch panel, a bridge-crossing electrode layer only has a bridge for electrically connecting a touch electrode, the metal coverage rate of the bridge-crossing electrode layer is less than 3% of that of a patterned touch electrode layer, and a metal coverage rate less than 3% can cause that a bridge-crossing structure is easily broken in a dry etching process, so that the problem of circuit breaking is caused. In the embodiment of the invention, the metal coverage rate of the finally patterned bridge-spanning electrode layer can be increased through the auxiliary conductive part, so that the metal coverage rate in the bridge-spanning electrode layer is increased to a range of 3% -99%, the risk that the bridge-spanning is cut off can be reduced or avoided, and the yield can be improved.
Fig. 3-6 are schematic structural diagrams of electrode patterns in the same region, and the difference is that the layout of the metal line segments 21 in the auxiliary conductive part is different.
In the touch panel according to the embodiment of the present invention, in order to avoid the influence of the induced voltage generated by the floating of the auxiliary conductive part on the touch detection result, the electrical signal input by the auxiliary conductive part 15 is set to be the same as the electrical signal input by the touch electrode. Specifically, the auxiliary conductive part 15 and the touch electrode 13 may be connected through a through hole penetrating through the insulating layer, or an electrical signal may be input to the auxiliary conductive part 15 alone.
In an embodiment of the invention, the touch electrode layer includes a plurality of metal layers stacked on each other. Optionally, the multiple metal layers include a Mo layer, an Al layer, and a Mo layer stacked in sequence; or a Ti layer, an Al layer and a Ti layer which are sequentially laminated.
In the touch panel according to the embodiment of the invention, the auxiliary conductive part is arranged in the bridge-crossing electrode layer, so that the metal coverage rate of the patterned bridge-crossing electrode layer can be improved, the uniformity of metal wires in the patterned bridge-crossing electrode layer can be improved, and the problem of open circuit of the bridge-crossing 14 can be further avoided. In addition, the bridge 14 can be provided with the metal bridge line 25 matched with the metal grid through the touch electrode layer adopting a metal grid structure, and the auxiliary conductive part 15 is provided with the metal route segment 21 matched with the metal grid, so that the touch panel has better bending characteristic, smaller impedance and better transmittance.
Based on the above-mentioned touch panel embodiment, another embodiment of the present invention further provides a manufacturing method for manufacturing the touch panel described in the above-mentioned embodiment, where the straight-walking method is as shown in fig. 7, and fig. 7 is a schematic flow chart of the manufacturing method provided in the embodiment of the present invention, and the manufacturing method includes:
step S11: a substrate is provided.
The substrate may be a glass plate or a transparent substrate such as a transparent plastic plate.
Step S12: and forming a patterned first conductive layer on the surface of the substrate.
Step S13: and forming an insulating layer on the surface of the first conductive layer.
The insulating layer is made of a transparent material, so that the touch panel can be used for an integrated touch display panel.
Step S14: and forming a second patterned conductive layer on the surface of the insulating layer.
One of the first conductive layer and the second conductive layer is a touch electrode layer, and the other one is a bridge electrode layer; the touch electrode layer comprises a plurality of touch electrodes; the bridge-crossing electrode layer comprises a plurality of bridge-crossing electrodes and an auxiliary conductive part, the bridge-crossing electrodes are used for connecting two adjacent touch electrodes, and the auxiliary conductive part is insulated from the bridge-crossing electrodes.
The touch electrode layer is a plurality of metal layers which are arranged in a stacked mode; the forming method of the touch electrode layer comprises the following steps: sequentially depositing the metal layers; and forming a grid electrode layer with a set pattern structure by an etching process. The method for forming the bridge electrode layer may be the same as the method for forming the touch electrode.
According to the manufacturing method provided by the embodiment of the invention, the bridge-crossing electrode layer can be prepared by adopting a dry etching process with mature process and low cost, and the bridge-crossing electrode layer is provided with the auxiliary conductive part, so that the metal coverage rate of the patterned bridge-crossing electrode layer can be improved, the uniformity of metal wires in the patterned bridge-crossing electrode layer is improved, and the problem of bridge-crossing circuit breaking is further avoided. In addition, as described in the above embodiment, by using the touch electrode layer of the metal mesh structure, the bridge is provided with the metal bridge lines matched with the metal mesh, and the auxiliary conductive part is provided with the metal routing segments matched with the metal mesh, so that the touch panel has better bending characteristics, has lower impedance, and has better transmittance.
Based on the touch panel and the manufacturing method thereof, another embodiment of the invention further provides a touch-integrated display panel, as shown in fig. 8, fig. 8 is a top view of the display panel provided by the embodiment of the invention, and the display panel 31 includes the touch panel described in the above embodiment.
Referring to fig. 9, fig. 9 is a cross-sectional view of a display panel according to an embodiment of the present invention, in which the display panel includes: a substrate 41; an array layer 42 on the substrate 41; a light emitting function layer 43 on the array layer 42; an encapsulation layer 44 on the light-emitting functional layer 43; the encapsulation layer 44 is the substrate 11 of the touch panel according to the above embodiment. The package layer 44 is provided with a bridge electrode layer and a touch electrode layer, and the design methods of the bridge electrode layer and the touch electrode layer can be described with reference to the above embodiments, which are not described herein again.
The array layer includes a TFT array for driving the light-emitting functional layer 43 to perform light-emitting display. The light emitting function layer comprises a plurality of OLED pixels which are arranged in an array. The display panel is an OLED display panel.
In the display panel of the embodiment of the invention, the bridge-crossing electrode layer is arranged on the light-emitting side of the display panel. First, a patterned touch electrode layer is formed on the package layer 44 as a substrate, and then an insulating layer and a patterned bridge electrode layer are formed. The pattern structure of the bridge-crossing electrode layer is arranged on the basis of the pattern structure of the touch electrode layer, the layout of a bridge 14 and an auxiliary conductive part 15 in the bridge-crossing electrode layer does not need to be independently arranged, when the touch electrode 13 of the metal grid structure is adopted, metal route segments of the auxiliary conductive part 15 are respectively overlapped with corresponding metal wires in the metal grid, the line width of the metal route segments is set to be not more than the line width of the metal wires, and the transmittance of the metal grid is not influenced.
In other alternative embodiments of the invention, the bridge-crossing electrode layer may be disposed on a side of the touch electrode layer away from the light emitting surface of the display panel. Furthermore, the line widths of the metal route sections of the auxiliary conductive parts and the metal bridge lines of the bridge span are smaller than the line widths of the metal lines of the metal grids. Because the auxiliary conductive part is closer to the light source of the display panel, for the viewer, the light-emitting shielding degree of the auxiliary conductive part to the display panel is greater than that of the touch electrode, and therefore, the influence of the graphic structure of the bridge electrode layer close to the light source on the light transmittance can be avoided through the embodiment.
The display panel according to the embodiment of the present invention includes the touch panel according to the above embodiment, and in the touch panel, by providing the auxiliary conductive part in the bridge-crossing electrode layer, the metal coverage of the patterned bridge-crossing electrode layer can be improved, the uniformity of the metal lines in the patterned bridge-crossing electrode layer can be improved, and the problem of open circuit of the bridge-crossing can be avoided. In addition, the touch electrode layer with the metal grid structure is adopted, the bridge is provided with metal bridge wires matched with the metal grid, the auxiliary conducting part is provided with metal route segments matched with the metal grid, and therefore the touch panel has better bending characteristic, lower impedance and better transmittance.
Based on the foregoing embodiment, another embodiment of the present invention further provides a display device, where the display device is shown in fig. 10, fig. 10 is a schematic structural diagram of the display device according to the embodiment of the present invention, and the display device 51 includes the display panel implemented in the foregoing embodiment. The display device can be an electronic device with a touch display function, such as a mobile phone, a tablet computer, an all-in-one computer, a desktop computer, a television and the like.
The display device adopts the display panel of the embodiment, and in the touch panel of the display panel, the auxiliary conductive part is arranged in the bridge-crossing electrode layer, so that the metal coverage rate of the patterned bridge-crossing electrode layer can be improved, the uniformity of metal wires in the patterned bridge-crossing electrode layer is improved, and the problem of bridge-crossing circuit breaking is further avoided. In addition, the touch electrode layer with the metal grid structure is adopted, the bridge is provided with metal bridge wires matched with the metal grid, the auxiliary conducting part is provided with metal route segments matched with the metal grid, and therefore the touch panel has better bending characteristic, lower impedance and better transmittance.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the manufacturing method, the display panel and the display device disclosed in the embodiments, since they correspond to the touch panel disclosed in the embodiments, the description is relatively simple, and the relevant points can be referred to the description of the corresponding parts of the touch panel.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (17)
1. A touch panel, comprising:
a substrate;
the touch electrode layer and the bridge electrode layer are arranged on the substrate in a stacked mode;
the insulating layer is positioned between the touch electrode layer and the bridge electrode layer;
the touch electrode layer comprises a plurality of touch electrodes; the touch electrode comprises a metal grid formed by a plurality of crossed metal wires;
the bridge-crossing electrode layer comprises a plurality of bridge-crossing electrodes and an auxiliary conductive part, the bridge-crossing electrodes are metal connecting bridges and are used for connecting two adjacent touch electrodes, and the auxiliary conductive part is insulated from the bridge-crossing electrodes; the auxiliary conductive part comprises a plurality of metal line sections which are distributed separately, and the metal line sections are superposed with the metal lines.
2. The touch panel of claim 1,
the lengths of the adjacent metal routing sections are different;
and/or the extending directions of the adjacent metal routing sections are different.
3. The touch panel of claim 1, wherein the metal trace segments all have the same extending direction;
or, the extending direction of a part of the metal wire sections is a first direction, the extending direction of the other part of the metal wire sections is a second direction, and the first direction is not parallel to the second direction.
4. The touch panel of claim 1, wherein an orthogonal projection of the metal wire trace segment on the metal mesh is located in an area where the metal wire is located.
5. The touch panel of claim 1, wherein the metal mesh comprises a plurality of first metal lines arranged in parallel; the first metal line extends along a first direction;
a group of second metal lines is arranged between any two adjacent first metal lines, each group of second metal lines is provided with a plurality of second metal lines which are arranged in parallel, the second metal lines extend along a second direction, the first direction is perpendicular to the second direction, and the second metal lines are connected with at least one adjacent first metal line;
in the second direction, the second metal lines in two adjacent groups of second metal lines are arranged in a staggered mode.
6. The touch panel of claim 5, wherein the metal trace segments overlap the second metal lines, and each of the metal trace segments corresponds to one of the second metal lines.
7. The touch panel of claim 1, wherein in the bridge-crossing electrode layer, the metal coverage rate is a first metal coverage rate;
in the touch electrode layer, the metal coverage rate is a second metal coverage rate;
the first metal coverage is greater than 3% and less than 99% of the second metal coverage.
8. The touch panel of claim 1, wherein the bridge comprises at least one metal bridge wire, one end of the metal bridge wire is connected to one of the touch electrodes through at least two through holes penetrating through the insulating layer, and the other end of the metal bridge wire is connected to the other touch electrode through at least two through holes penetrating through the insulating layer.
9. The touch panel according to claim 1, wherein the electrical signal input by the auxiliary conductive portion is the same as the electrical signal input by the touch electrode.
10. The touch panel according to claim 8, wherein the auxiliary conductive portion is connected to the touch electrode through a through hole penetrating the insulating layer.
11. The touch panel according to claim 1, wherein the touch electrode layer comprises a plurality of metal layers stacked one on another.
12. The touch panel according to claim 11, wherein the plurality of metal layers include a Mo layer, an Al layer, and a Mo layer stacked in this order;
or a Ti layer, an Al layer and a Ti layer which are sequentially laminated.
13. A manufacturing method for manufacturing the touch panel according to any one of claims 1 to 12, the manufacturing method comprising:
providing a substrate;
forming a patterned first conductive layer on the surface of the substrate;
forming an insulating layer on the surface of the first conductive layer;
forming a second patterned conductive layer on the surface of the insulating layer;
one of the first conductive layer and the second conductive layer is a touch electrode layer, and the other one is a bridge electrode layer; the touch electrode layer comprises a plurality of touch electrodes; the bridge-crossing electrode layer comprises a plurality of bridge-crossing electrodes and an auxiliary conductive part, the bridge-crossing electrodes are used for connecting two adjacent touch electrodes, and the auxiliary conductive part is insulated from the bridge-crossing electrodes.
14. The method according to claim 13, wherein the touch electrode layer is a plurality of metal layers stacked one on another;
the forming method of the touch electrode layer comprises the following steps:
sequentially depositing the metal layers;
and forming a grid electrode layer with a set pattern structure by an etching process.
15. A touch-integrated display panel comprising the touch panel of any one of claims 1-12.
16. The display panel according to claim 15, characterized in that the display panel comprises:
a substrate;
an array layer on the substrate;
a light emitting functional layer on the array layer;
an encapsulation layer on the light emitting functional layer;
the packaging layer is a substrate of the touch panel.
17. A display device characterized by comprising the display panel according to claim 15 or 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717495.8A CN108897454B (en) | 2018-06-29 | 2018-06-29 | Touch panel and manufacturing method thereof, display panel integrated with touch and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717495.8A CN108897454B (en) | 2018-06-29 | 2018-06-29 | Touch panel and manufacturing method thereof, display panel integrated with touch and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108897454A CN108897454A (en) | 2018-11-27 |
| CN108897454B true CN108897454B (en) | 2021-07-23 |
Family
ID=64348108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810717495.8A Active CN108897454B (en) | 2018-06-29 | 2018-06-29 | Touch panel and manufacturing method thereof, display panel integrated with touch and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108897454B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801949B (en) * | 2019-01-31 | 2021-05-04 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN109830521B (en) * | 2019-03-29 | 2021-03-16 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN110010668B (en) | 2019-04-09 | 2021-07-27 | 武汉天马微电子有限公司 | Organic light emitting display panel and display device |
| CN112416156A (en) * | 2019-08-23 | 2021-02-26 | 陕西坤同半导体科技有限公司 | Touch display panel and preparation method |
| CN112445360B (en) * | 2019-08-30 | 2024-01-23 | 京东方科技集团股份有限公司 | Touch screen and display device |
| CN112000242A (en) * | 2020-07-31 | 2020-11-27 | 合肥维信诺科技有限公司 | Touch panel and display device |
| CN112650411B (en) * | 2020-12-28 | 2024-04-19 | 武汉天马微电子有限公司 | Display panel, preparation method of display panel and display device |
| CN113407056B (en) * | 2021-06-17 | 2023-12-15 | 昆山国显光电有限公司 | Touch functional film layer and display panel |
| EP4294156A4 (en) * | 2021-08-30 | 2024-05-01 | Boe Technology Group Co Ltd | Light-emitting substrate and display apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216594A (en) * | 2014-09-25 | 2014-12-17 | 福州智创触控技术有限公司 | Low-impedance capacitive touch screen and manufacturing method thereof |
| CN105446570A (en) * | 2016-01-28 | 2016-03-30 | 京东方科技集团股份有限公司 | Touch control unit and preparation method thereof and touch control substrate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8298430B2 (en) * | 2007-10-25 | 2012-10-30 | Tdk Corporation | Method of etching magnetoresistive film by using a plurality of metal hard masks |
-
2018
- 2018-06-29 CN CN201810717495.8A patent/CN108897454B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216594A (en) * | 2014-09-25 | 2014-12-17 | 福州智创触控技术有限公司 | Low-impedance capacitive touch screen and manufacturing method thereof |
| CN105446570A (en) * | 2016-01-28 | 2016-03-30 | 京东方科技集团股份有限公司 | Touch control unit and preparation method thereof and touch control substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108897454A (en) | 2018-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108897454B (en) | Touch panel and manufacturing method thereof, display panel integrated with touch and display device | |
| WO2019218866A1 (en) | Touch structure and touch panel | |
| US20150085205A1 (en) | Touch panel | |
| CN214098387U (en) | Display panel and display device | |
| US11216126B2 (en) | Touch screen and manufacturing method thereof, display substrate, and touch display device | |
| KR101814656B1 (en) | Electronic device and single-layer mutual-capacitance touch screen thereof | |
| US9778808B2 (en) | Touch panel and method for manufacturing the same | |
| US10606388B2 (en) | Array substrate, manufacturing method thereof and touch display panel | |
| CN110768731A (en) | Functional panel, manufacturing method thereof and terminal | |
| CN113778267B (en) | Display panel and display device | |
| TWI588688B (en) | Touch panel and touch display panel | |
| KR101985894B1 (en) | Touch screen panel and method of fabricating the same | |
| CN109755278A (en) | OLED display panel and its manufacturing method and driving method, display device | |
| US20210357078A1 (en) | Touch panel, manufacturing method thereof and display device | |
| WO2020020353A1 (en) | Touch substrate, manufacturing method for same, and touch device | |
| CN113268164B (en) | Touch structure and display device | |
| CN109270754B (en) | Array substrate and display device | |
| CN202956748U (en) | Con-joint wiring capacitive touch panel | |
| JP2014120038A (en) | Touch panel and display device having the same provided | |
| CN109429516B (en) | Touch substrate, touch display device and method of manufacturing touch substrate | |
| CN109002208A (en) | A kind of touch screen and mobile terminal | |
| TWI590434B (en) | Display panel | |
| CN211506122U (en) | Display panel and display device | |
| CN112639698A (en) | Touch structure and touch display device | |
| CN113741731B (en) | display panel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |