CN110286801B - Touch panel, manufacturing method thereof and display device - Google Patents
Touch panel, manufacturing method thereof and display device Download PDFInfo
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- CN110286801B CN110286801B CN201910570433.3A CN201910570433A CN110286801B CN 110286801 B CN110286801 B CN 110286801B CN 201910570433 A CN201910570433 A CN 201910570433A CN 110286801 B CN110286801 B CN 110286801B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The application discloses a touch panel, a manufacturing method thereof and a display device, and belongs to the technical field of display. The touch panel includes: a substrate, and a touch unit and a coupling electrode arranged on the substrate. The touch unit may include: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer. The coupling electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit, so that the capacitance value of a coupling capacitor formed between the touch driving electrode and the touch sensing electrode is effectively reduced, and the touch accuracy of the touch panel is higher.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a touch panel, a manufacturing method thereof, and a display device.
Background
With rapid development of display technology, touch display devices have been gradually spread throughout people's lives. Touch display devices generally include a touch panel and a display panel, and the display panel generally includes a color film substrate and a display substrate opposite to each other. Wherein, the touch panel may include: the touch control device comprises a substrate base plate and a touch control layer arranged on the substrate base plate, wherein the touch control layer comprises a touch control driving electrode and a touch control sensing electrode; the color film substrate may include: a substrate and a color filter layer disposed on the substrate; the display substrate may include: a substrate and a display layer disposed on the substrate, the display layer including electrodes such as a source electrode, a drain electrode, and a gate electrode.
According to the different positional relationship between the touch panel and the display panel, the touch panel may be divided into a monolithic touch panel, an externally hung touch panel, and an embedded touch panel. In a touch display device including an external touch panel, the touch panel and a color film substrate share a substrate. That is, the color filter layer in the color film substrate is positioned on one side of the substrate close to the display substrate, and the touch layer in the touch panel is positioned on one side of the substrate away from the display substrate.
However, as the touch display device is thinned, in the touch display device including the plug-in touch panel, the distance between the touch layer in the touch panel and the display layer in the display substrate is relatively short, and the electrode in the display layer may affect the touch sensing electrode in the touch layer, resulting in lower touch accuracy of the touch panel.
Disclosure of Invention
The embodiment of the application provides a touch panel, a manufacturing method thereof and a display device. The problem of the touch accuracy of the touch panel of the prior art is lower can be solved, and the technical scheme is as follows:
in a first aspect, there is provided a touch panel including:
a substrate base;
the touch unit is arranged on the substrate base plate, and comprises: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer, a first edge of the touch control driving electrode is adjacent to a second edge of the touch control sensing electrode, and the extending shapes of the first edge and the second edge are all curved;
and a coupling-down electrode arranged on the substrate base plate, wherein the coupling-down electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit.
Optionally, the extending shapes of the first edge and the second edge are fold lines.
Optionally, the touch driving electrode includes: a first sub-electrode and a plurality of second sub-electrodes connected to the first sub-electrode;
the touch sensing electrode includes: a third sub-electrode and a plurality of fourth sub-electrodes connected to the third sub-electrode;
the plurality of fourth sub-electrodes and the plurality of second sub-electrodes are located between the first sub-electrodes and the second sub-electrodes, and the fourth sub-electrodes and the second sub-electrodes are arranged at intervals one by one.
Optionally, the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode have the same shape.
Optionally, the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode are all in rectangular strip structures;
the extending directions of the first sub-electrode and the third sub-electrode are the same, the extending directions of the plurality of second sub-electrodes are the same, the extending directions of the plurality of fourth sub-electrodes are the same, and the extending directions of the second sub-electrodes are the same as the extending directions of the fourth sub-electrodes.
Optionally, the touch panel includes a plurality of touch units arranged in an array, the plurality of touch units are arranged in a plurality of columns, and the touch driving electrodes in each column of touch units are electrically connected.
Optionally, a gap exists between the first edge and the second edge, the coupling-down electrode is located in the gap, and the shape of the coupling-down electrode matches the shape of the gap.
Optionally, the touch panel includes a plurality of touch units arranged in an array, the plurality of touch units are arranged in a plurality of columns, and the coupling-down electrodes between the touch driving electrodes and the touch sensing electrodes of the touch units in the same column are electrically connected.
Optionally, the touch panel further includes: the touch control device comprises a touch control panel and a plurality of first grounding wires and a plurality of second grounding wires, wherein the first grounding wires are electrically connected with the first grounding wires, the first grounding wires are annularly distributed in a non-display area of the touch control panel, and each second grounding wire is located between two adjacent rows of touch control units.
Optionally, the extending direction of each second grounding trace is the same as the arrangement direction of each row of the touch units.
In a second aspect, there is provided a method of manufacturing a touch panel, the method including:
forming a touch unit and a coupling-down electrode on a substrate;
wherein, the touch unit includes: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer, a first edge of the touch control driving electrode is adjacent to a second edge of the touch control sensing electrode, and the extending shapes of the first edge and the second edge are all curved;
the coupling-down electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit.
In a third aspect, there is provided a display device including:
the touch panel is any one of the touch panels of the first aspect.
Optionally, the display panel includes: and the substrate base plate of the touch panel is multiplexed with the color film base plate.
Optionally, the display device further includes: and the touch control chip is electrically connected with the touch control driving electrode and the touch control sensing electrode respectively.
The technical scheme provided by the embodiment of the application has the beneficial effects that:
the touch panel includes: a substrate, and a touch unit and a coupling electrode arranged on the substrate. The touch unit may include: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer. The first edge of the touch driving electrode is adjacent to the second edge of the touch sensing electrode. The extending shapes of the first edge and the second edge form a curve, so that the interaction area between the touch driving electrode and the touch sensing electrode is effectively increased, and further the touch sensing signal quantity of the touch sensing electrode is improved. The coupling electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit, so that the capacitance value of a coupling capacitor formed between the touch driving electrode and the touch sensing electrode is effectively reduced, the touch sensing signal quantity of the touch sensing electrode is further improved, and the touch accuracy of the touch panel is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present application;
fig. 2 is an exemplary diagram of forming a capacitor in a manufacturing display device using the touch panel shown in fig. 1;
fig. 3 is a schematic structural diagram of another touch panel according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another touch panel according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the application. The touch panel 100 may include:
a substrate 10, and a touch unit 20 and a down-coupling electrode 30 provided on the substrate 10.
The touch unit 20 may include: the touch driving electrode 21 and the touch sensing electrode 22 are arranged on the same layer. The first edge a of the touch driving electrode 21 is adjacent to the second edge b of the touch sensing electrode 22. The extending shapes of the first edge a and the second edge b are curved. At this time, the area of interaction between the touch driving electrode 21 and the touch sensing electrode 22 can be effectively increased, so as to improve the touch sensing signal quantity of the touch sensing electrode 22, and make the touch accuracy of the touch panel higher.
The coupling-down electrode 30 is located between the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20.
Referring to fig. 2, fig. 2 is an exemplary diagram of forming a capacitor in a display device prepared by using the touch panel shown in fig. 1. The display device includes: the display panel 200 is similar to the touch panel 100 shown in fig. 1. The capacitance formed between the touch driving electrode 21 and the coupling-down electrode 30 in the touch panel 100 is C1; the capacitance formed between the electrode in the display panel 200 and the touch driving electrode 21 is C2; the capacitance formed between the electrode in the display panel 200 and the touch down coupling electrode 30 is C3; a capacitance C4 is formed between the touch sensing electrode 22 and the touch driving electrode 21. Then, the coupling capacitance cm= [ c1+ (C2 series C3) ] formed between the touch driving electrode 21 and the touch sensing electrode 22 is connected in series with c4=ε× S/d.
Wherein, the epsilon-pole is used to couple the dielectric constant of the medium between the plates (i.e. the touch driving electrode 21 and the touch sensing electrode 22) of the capacitor, S is used to represent the area of the plates of the capacitor, and d is the distance between the plates of the capacitor.
When the coupling-down electrode 30 is located between the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20, the electric field lines formed between the touch driving electrode 21 and the touch sensing electrode need to bypass the coupling-down electrode 30, and the distance d between the electrode plates is increased. Since the capacitance value of the coupling capacitance CM is inversely proportional to the distance d between the plates, the capacitance value of the coupling capacitance CM decreases when the distance d between the plates increases.
As can be seen from the above, when the coupling electrode 30 is located between the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20, the capacitance value of the coupling capacitor formed between the touch driving electrode 21 and the touch sensing electrode 22 is effectively reduced, and the touch sensing signal quantity of the touch sensing electrode 22 is further improved, so that the touch accuracy of the touch panel is higher.
In summary, the touch panel provided by the embodiment of the application includes: a substrate, and a touch unit and a coupling electrode arranged on the substrate. The touch unit may include: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer. The first edge of the touch driving electrode is adjacent to the second edge of the touch sensing electrode. The extending shapes of the first edge and the second edge form a curve, so that the interaction area between the touch driving electrode and the touch sensing electrode is effectively increased, and further the touch sensing signal quantity of the touch sensing electrode is improved. The coupling electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit, so that the capacitance value of a coupling capacitor formed between the touch driving electrode and the touch sensing electrode is effectively reduced, the touch sensing signal quantity of the touch sensing electrode is further improved, and the touch accuracy of the touch panel is higher.
Alternatively, referring to fig. 3, fig. 3 is a schematic structural diagram of another touch panel according to an embodiment of the present application, wherein an extending shape of a first edge a of the touch driving electrode 21 and an extending shape of a second edge b of the touch sensing electrode 22 are both fold lines.
For example, the touch driving electrode 21 may include: a first sub-electrode 21a, and a plurality of second sub-electrodes 21b, the plurality of second sub-electrodes 21b being electrically connected to the first sub-electrode 21 a. The touch sensing electrode 22 may include: a third sub-electrode 22a, and a plurality of fourth sub-electrodes 22b, the plurality of fourth sub-electrodes 22b being electrically connected to the third sub-electrode 22 a. The second sub-electrodes 21b and the fourth sub-electrodes 22b are located between the first sub-electrode 21a and the third sub-electrode 22a, and the fourth sub-electrodes 22b and the second sub-electrodes 21b are arranged at intervals. That is, one fourth sub-electrode 22b is arranged between any two second sub-electrodes 21b, and one second sub-electrode 21b is arranged between any two fourth sub-electrodes 22 b.
Alternatively, the first sub-electrode 21a, the second sub-electrode 21b, the third sub-electrode 22a, and the fourth sub-electrode 22b are identical in shape. For example, the first sub-electrode 21a, the second sub-electrode 21b, the third sub-electrode 22a, and the fourth sub-electrode 22b are each in a rectangular stripe structure. In the embodiment of the present application, the extending directions of the first sub-electrode 21a and the third sub-electrode 22a are the same. The extending directions of the plurality of second sub-electrodes 21b are the same, the extending directions of the plurality of fourth sub-electrodes 22b are the same, and the extending directions of the second sub-electrodes 21b are the same as the extending directions of the fourth sub-electrodes 22 b.
In fig. 3, the shapes of the first sub-electrode 21a, the second sub-electrode 21b, the third sub-electrode 22a, and the fourth sub-electrode 22b are each rectangular bar-shaped. In other alternative implementations, the shapes of the first sub-electrode 21a, the second sub-electrode 21b, the third sub-electrode 22a, and the fourth sub-electrode 22b may all be curved. The embodiments of the present application are not limited herein.
Optionally, referring to fig. 4, fig. 4 is a schematic structural diagram of another touch panel according to an embodiment of the application, and the touch panel 100 includes a plurality of touch units 20 arranged in an array, and the plurality of touch units 20 are arranged in a plurality of columns. The touch driving electrodes 21 in each column of the touch units 20 are electrically connected; there is no overlap in the orthographic projection of the respective touch sensing electrodes 22 in each column of touch units 20 on the substrate 10, that is, there is no electrical connection between the respective touch sensing electrodes 22 in each column of touch units 20.
Optionally, the coupling-down electrodes 30 between the touch driving electrodes 21 and the touch sensing electrodes 22 of the same column of touch units 20 are electrically connected. That is, when preparing the coupling-down electrode 30, only one continuous coupling-down electrode 30 is required to be formed in each row of touch units 20, so that the forming process of the coupling-down electrode 30 is effectively simplified.
In the embodiment of the application, a gap c exists between the first edge a of the touch driving electrode 21 and the second edge b of the touch sensing electrode 22. The down-coupling electrode 30 may be positioned within the gap c, and the shape of the down-coupling electrode b matches the shape of the gap c, and the width of the down-coupling electrode b needs to be smaller than the width of the gap c. Since the extending shape of the first edge a and the extending shape of the second edge b are both fold lines, the shape of the gap c formed between the first edge a and the second edge b may be wavy, and the shape of the coupling-down electrode 30 may be wavy.
Alternatively, as shown in fig. 4, the touch panel 100 has a display area 100a and a non-display area 100b, and the touch unit 20 and the coupling-down electrode 30 in the touch panel 100 are both located in the display area 100 a. In the embodiment of the application, static electricity may be generated in the display area 100a of the touch panel 100, and the static electricity may damage the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20, so that the touch driving electrode 21 and the touch sensing electrode 22 are shorted, and the touch unit 20 is disabled.
In order to avoid the phenomenon that the touch unit 20 fails due to the generated static electricity of the touch panel 100, the touch panel 100 may further include: the first grounding trace 40 and the plurality of second grounding traces 50. The plurality of second grounding wires 50 are electrically connected to the first grounding wires 40, and each second grounding wire 50 is located between two adjacent rows of touch units 20. The first grounding trace 40 is annularly distributed in the non-display area 100b of the touch panel 100. Static electricity generated by the touch panel 100 can be led out through the first grounding trace 40 and the second grounding trace 50, so that the phenomenon that static electricity damages the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20 is avoided, and the failure probability of the touch unit 20 is reduced.
In the embodiment of the present application, the extending direction of each second grounding trace 50 is the same as the arrangement direction of each row of touch units 20. The first ground trace 40 may include: a first sub-trace 41, a second sub-trace 42 and a third sub-trace 43. Both ends of the second sub-trace 42 are electrically connected to the first sub-trace 41 and the third sub-trace 43, respectively, and each first grounding trace 40 is electrically connected to the second sub-trace 42. The extending direction of the first sub-trace 41, the extending direction of the third sub-trace 43, and the extending direction of each second grounding trace 50 are the same, and the extending direction of the second sub-trace 42 is perpendicular to the extending direction of each second grounding trace 50.
Alternatively, the materials of the touch driving electrode 21 and the touch sensing electrode 22 in the above embodiment may be transparent materials, for example, the materials may include: indium Tin Oxide (ITO).
In the embodiment of the present application, when the coupling-down electrode 30 is disposed between the touch driving electrode 21 and the touch sensing electrode 22 in the touch unit 20, it is assumed that the size of the touch unit 20 is: 5.57 mm by 6.54 mm. At this time, the capacitance value of the coupling capacitor formed between the touch driving electrode 21 and the touch sensing electrode 22 is 2.3 picofarads, and the modulation ratio of the touch sensing signal of the touch unit 20 is 15% -20%.
When no decoupling electrode is disposed between the touch driving electrode and the touch sensing electrode in the touch unit, the size of the touch unit is assumed to be: 5.57 mm by 6.54 mm. At this time, the capacitance value of the coupling capacitor formed between the touch driving electrode and the touch sensing electrode is 4.39 picofarads, and the modulation ratio of the touch sensing signal of the touch unit is 10%.
Therefore, in the embodiment of the application, the capacitance value of the coupling capacitor formed between the touch driving electrode 21 and the touch sensing electrode 22 is smaller, and the modulation ratio of the touch sensing signal is higher, so that the signal quantity of the touch sensing signal is larger, the touch sensing signal is not easy to be interfered by noise, and the touch accuracy of the touch panel 100 is further improved.
In summary, the touch panel provided by the embodiment of the application includes: a substrate, and a touch unit and a coupling electrode arranged on the substrate. The touch unit may include: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer. The first edge of the touch driving electrode is adjacent to the second edge of the touch sensing electrode. The extending shapes of the first edge and the second edge form a curve, so that the interaction area between the touch driving electrode and the touch sensing electrode is effectively increased, and further the touch sensing signal quantity of the touch sensing electrode is improved. The coupling electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit, so that the capacitance value of a coupling capacitor formed between the touch driving electrode and the touch sensing electrode is effectively reduced, the touch sensing signal quantity of the touch sensing electrode is further improved, and the touch accuracy of the touch panel is higher.
The embodiment of the application also provides a method for manufacturing the touch panel, which is used for manufacturing the touch panel shown in fig. 1, and can include:
and forming a touch control unit and a coupling-down electrode on the substrate.
The touch unit includes: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer, the first edge of the touch control driving electrode is adjacent to the second edge of the touch control sensing electrode, and the extension shapes of the first edge and the second edge are all curved; the coupling-down electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit.
Optionally, another method for manufacturing a touch panel is provided in an embodiment of the present application, where the method for manufacturing a touch panel shown in fig. 4 may include:
a touch control unit, a first grounding wire and a second grounding wire of a coupling electrode are formed on a substrate.
For example, the transparent conductive layer may be formed on the substrate by any one of deposition, coating, sputtering, and the like, and then the touch unit, the first grounding trace and the second grounding trace of the coupling electrode are formed on the transparent conductive layer by a one-time patterning process. The one-time patterning process may include: photoresist coating, exposure, development, etching, and photoresist stripping.
It will be clear to those skilled in the art that, for convenience and brevity of description, the working principle of the touch panel described above may refer to the corresponding content in the embodiment of the structure of the touch panel, which is not described in detail herein.
In summary, in the method for manufacturing a touch panel according to the embodiment of the application, the touch unit and the coupling electrode are formed on the substrate. The touch unit may include: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer. The first edge of the touch driving electrode is adjacent to the second edge of the touch sensing electrode. The extending shapes of the first edge and the second edge form a curve, so that the interaction area between the touch driving electrode and the touch sensing electrode is effectively increased, and further the touch sensing signal quantity of the touch sensing electrode is improved. The coupling electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit, so that the capacitance value of a coupling capacitor formed between the touch driving electrode and the touch sensing electrode is effectively reduced, the touch sensing signal quantity of the touch sensing electrode is further improved, and the touch accuracy of the touch panel is higher.
The embodiment of the application also provides a display device which can be any product or component with display function and touch control function, such as electronic paper, a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame or a navigator.
The display device may include: a superimposed display panel and a touch panel. The touch panel is the touch panel shown in fig. 1, 3 or 4.
In an embodiment of the present application, the display panel may include: a color film substrate. The color film substrate may include: a substrate and a color filter layer disposed on the substrate. The substrate of the touch panel in the embodiment of the application is reused for the color film substrate. Namely, the touch panel and the color film substrate share the substrate. The display panel may further include a display substrate. The color filter layer in the color film substrate is positioned on one side of the substrate close to the display substrate, and the touch control unit and the coupling-down electrode in the touch control panel are positioned on one side of the substrate away from the display substrate.
It should be noted that, if the display panel is a liquid crystal display panel, the display substrate in the display panel is an array substrate; if the display panel is an organic light emitting diode display panel, the display substrate in the display panel is an organic light emitting diode display backboard.
Optionally, as shown in fig. 5, fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application, where the display device may further include: the touch chip 300. The touch chip 300 is electrically connected to the touch driving electrode 21 and the touch sensing electrode 22 in the touch panel 100, respectively.
If the touch panel 100 is the touch panel shown in fig. 4, the touch chip 300 needs to be electrically connected to the touch driving electrodes 21 in each row of the touch units 20, and the touch chip 300 also needs to be electrically connected to the touch sensing electrodes 22 in each touch unit 20. The touch chip 300 may also be electrically connected to the first ground trace 40 and each of the second ground traces 50. For example, the first grounding trace 40 may be electrically connected to a grounding terminal in the touch chip 300, and each of the second grounding traces 50 may also be electrically connected to a grounding terminal in the touch chip 300.
The embodiment of the application also provides a touch control method which can be applied to the display device shown in fig. 5. The touch control method may include:
and step A, sequentially sending touch control driving signals to touch control driving electrodes of a plurality of rows of touch control units of the touch control panel.
For example, the display device may sequentially send a touch driving signal to the touch driving electrodes of the multi-column touch units of the touch panel through the touch chip.
And B, for each row of touch units, after the touch driving signals are sent, receiving touch sensing signals sent by all touch sensing electrodes of the touch panel.
For example, the display device may receive touch sensing signals sent by all touch sensing electrodes of the touch panel through the touch chip.
And C, determining the position of a touch point in the touch panel based on the touch driving signal and the touch sensing signal.
For example, the display device may determine the location of the touch point in the touch panel through the touch chip.
It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but is intended to cover all modifications, equivalents, alternatives, and improvements falling within the spirit and principles of the application.
Claims (13)
1. A touch panel, comprising:
a substrate base;
the touch unit is arranged on the substrate base plate, and comprises: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer, a first edge of the touch control driving electrode is adjacent to a second edge of the touch control sensing electrode, and the extending shapes of the first edge and the second edge are all curved;
the coupling electrode is arranged on the substrate base plate and is positioned between the touch driving electrode and the touch sensing electrode in the touch unit;
a gap exists between the first edge and the second edge, the coupling-down electrode is located in the gap, the shape of the coupling-down electrode is matched with that of the gap, and the width of the coupling-down electrode is smaller than that of the gap.
2. The touch panel according to claim 1, wherein,
the extension shapes of the first edge and the second edge are fold lines.
3. The touch panel according to claim 2, wherein,
the touch driving electrode includes: a first sub-electrode and a plurality of second sub-electrodes connected to the first sub-electrode;
the touch sensing electrode includes: a third sub-electrode and a plurality of fourth sub-electrodes connected to the third sub-electrode;
the plurality of fourth sub-electrodes and the plurality of second sub-electrodes are located between the first sub-electrodes and the second sub-electrodes, and the fourth sub-electrodes and the second sub-electrodes are arranged at intervals one by one.
4. The touch panel according to claim 3, wherein,
the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode have the same shape.
5. The touch panel according to claim 4, wherein,
the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode are all in rectangular strip structures;
the extending directions of the first sub-electrode and the third sub-electrode are the same, the extending directions of the plurality of second sub-electrodes are the same, the extending directions of the plurality of fourth sub-electrodes are the same, and the extending directions of the second sub-electrodes are the same as the extending directions of the fourth sub-electrodes.
6. The touch panel according to any one of claim 1 to 5, wherein,
the touch panel comprises a plurality of touch units which are arranged in an array, wherein the touch units are arranged in a plurality of columns, and touch driving electrodes in each column of touch units are electrically connected.
7. The touch panel according to claim 1, wherein,
the touch panel comprises a plurality of touch units which are arranged in an array, the touch units are arranged in a plurality of columns, and the coupling electrode between the touch driving electrode and the touch sensing electrode of the touch unit in the same column is electrically connected.
8. The touch panel according to claim 7, wherein,
the touch panel further includes: the touch control device comprises a touch control panel and a plurality of first grounding wires and a plurality of second grounding wires, wherein the first grounding wires are electrically connected with the first grounding wires, the first grounding wires are annularly distributed in a non-display area of the touch control panel, and each second grounding wire is located between two adjacent rows of touch control units.
9. The touch panel according to claim 8, wherein,
the extending direction of each second grounding wire is the same as the arrangement direction of each row of touch control units.
10. A method for manufacturing a touch panel, the method comprising:
forming a touch unit and a coupling-down electrode on a substrate;
wherein, the touch unit includes: the touch control driving electrode and the touch control sensing electrode are arranged on the same layer, a first edge of the touch control driving electrode is adjacent to a second edge of the touch control sensing electrode, and the extending shapes of the first edge and the second edge are all curved;
the coupling-down electrode is positioned between the touch driving electrode and the touch sensing electrode in the touch unit;
a gap exists between the first edge and the second edge, the coupling-down electrode is located in the gap, the shape of the coupling-down electrode is matched with that of the gap, and the width of the coupling-down electrode is smaller than that of the gap.
11. A display device, comprising:
a superimposed display panel and a touch panel, the touch panel being the touch panel according to any one of claims 1 to 9.
12. The display device of claim 11, wherein the display device comprises a display device,
the display panel includes: and the substrate base plate of the touch panel is multiplexed with the color film base plate.
13. The display device of claim 11, wherein the display device comprises a display device,
the display device further includes: and the touch control chip is electrically connected with the touch control driving electrode and the touch control sensing electrode respectively.
Priority Applications (1)
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| CN103218097A (en) * | 2013-04-07 | 2013-07-24 | 北京京东方光电科技有限公司 | Capacitive embedded touch screen and display device |
| CN103677412A (en) * | 2013-12-09 | 2014-03-26 | 合肥京东方光电科技有限公司 | Embedded touch screen and driving method thereof |
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| CN109240543A (en) * | 2018-10-08 | 2019-01-18 | 深圳市德名利电子有限公司 | A kind of touch panel and display device |
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| KR20140043299A (en) * | 2010-10-28 | 2014-04-09 | 사이프레스 세미컨덕터 코포레이션 | Synchronizing a stylus with a capacitive sense array |
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| CN103150070A (en) * | 2013-03-05 | 2013-06-12 | 合肥京东方光电科技有限公司 | Capacitance type touch module, capacitance type in cell touch panel and display device |
| CN103218097A (en) * | 2013-04-07 | 2013-07-24 | 北京京东方光电科技有限公司 | Capacitive embedded touch screen and display device |
| CN103677412A (en) * | 2013-12-09 | 2014-03-26 | 合肥京东方光电科技有限公司 | Embedded touch screen and driving method thereof |
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