CN113282199A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN113282199A CN113282199A CN202010103912.7A CN202010103912A CN113282199A CN 113282199 A CN113282199 A CN 113282199A CN 202010103912 A CN202010103912 A CN 202010103912A CN 113282199 A CN113282199 A CN 113282199A
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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
- 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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a touch display panel and a display device, relating to the technical field of display, wherein the touch display panel comprises: a display area and a non-display area surrounding the display area; the display area comprises a plurality of first electrodes, a plurality of first touch lines and a plurality of second touch lines; the non-display area comprises a driving chip, the driving chip is positioned on one side of the display area along the second direction, and the first touch line and the second touch line are electrically connected with the driving chip; the first electrodes are electrically connected with the corresponding first touch control lines; the first touch control line is a touch control induction line, and the second touch control line is a touch control drive line; or the first touch control line is a touch control driving line, and the second touch control line is a touch control induction line; the second touch lines are reused as touch electrodes. The area of the non-display area in the touch display panel is effectively reduced, and the narrow frame of the touch display panel is favorably realized.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch display panel and a display device.
Background
With the development of science and technology, the use of touch display devices has become more and more widespread. The touch panel on the touch display device is provided with a touch integrated circuit, a plurality of touch driving electrodes and a plurality of touch sensing electrodes. The touch integrated circuit provides low-voltage high-frequency signals to the touch driving electrodes through the touch driving lines, so that the touch driving electrodes emit the low-voltage high-frequency signals. After receiving the low-voltage high-frequency signal, the touch sensing electrode can send the received signal to the touch integrated circuit through the touch sensing line. The touch operation of the user on the touch panel can cause the signal received by the touch sensing electrode to change, and the touch integrated circuit can determine the position generated by the touch operation according to the changed signal, so that the corresponding touch operation is realized.
In the related art, a plurality of touch driving electrodes are arranged along a column direction, a plurality of touch sensing electrodes are arranged along a row direction, each touch driving electrode extends along the row direction, a touch integrated circuit is generally disposed in a non-display area at the bottom of a touch panel, and a touch driving line is generally disposed in a non-display area at the left side and/or the right side of the touch panel.
However, since the touch driving lines are disposed in the non-display area on the left and/or right side of the touch panel, the frame of the touch display device is large, which is not favorable for narrowing the frame of the display device.
Disclosure of Invention
In view of this, the present invention provides a touch display panel and a display device, which effectively reduce the area of a non-display area in the touch display panel and are beneficial to realizing a narrow frame of the touch display panel.
In a first aspect, the present invention provides a touch display panel, including: a display area and a non-display area surrounding the display area; the display area comprises a plurality of first electrodes, a plurality of first touch lines and a plurality of second touch lines, the first electrodes extend along a first direction and are arranged along a second direction, the first touch lines and the second touch lines extend along the second direction, and the first direction and the second direction are intersected; the non-display area comprises a driving chip, the driving chip is positioned on one side of the display area along the second direction, and the first touch line and the second touch line are electrically connected with the driving chip; the first electrode corresponds to at least one first touch control line and is electrically connected with the first touch control line corresponding to the first electrode; the first touch control line is a touch control induction line, and the second touch control line is a touch control drive line; or the first touch control line is a touch control driving line, and the second touch control line is a touch control induction line; the second touch lines are reused as touch electrodes.
In a second aspect, the present invention provides a display device, including the touch display panel provided in the present invention.
Compared with the prior art, the touch display panel and the display device provided by the invention at least realize the following beneficial effects:
the invention provides a touch display panel, which comprises a display area and a non-display area surrounding the display area, wherein the display area comprises a plurality of first electrodes, a plurality of first touch lines and a plurality of second touch lines, the non-display area comprises a driving chip, the first electrodes extend along a first direction and are arranged along a second direction, the first touch lines and the second touch lines extend along the second direction, the first touch lines and the second touch lines are electrically connected with the driving chip, one first electrode corresponds to at least one first touch line, the first electrodes are electrically connected with the corresponding first touch lines, so that signals are transmitted to the corresponding first electrodes through the first touch lines, the second touch lines are multiplexed as touch electrodes, and the overlapping part of the second touch lines and the first electrodes forms a capacitor, when a finger touches the touch display panel of the embodiment, the position of the changed capacitor is detected, the touch location may be determined accordingly. When the first touch lines are touch sensing lines and the second touch lines are touch driving lines, the second touch lines are reused as touch driving electrodes without additionally arranging touch driving electrodes, so that the manufacturing process of the touch display panel is simplified, the production cost is reduced, the thickness of the touch display panel is reduced, and the trend of light and thin development of the touch display panel is complied with. When the first touch lines are touch driving lines and the second touch lines are touch sensing lines, the second touch lines are reused as touch sensing electrodes without additionally arranging touch sensing electrodes, so that the manufacturing process of the touch display panel is simplified, the production cost is reduced, the thickness of the touch display panel is reduced, and the trend of light and thin development of the touch display panel is complied with. The first touch line and the second touch line extend along the second direction, the first touch line and the second touch line are electrically connected with the driving chip, and the driving chip is located on one side of the display area along the second direction, namely, the first touch line and the second touch line do not need to extend to the parts, located on two sides of the display area relatively along the first direction, in the non-display area, so that the area of the non-display area of the touch display panel is effectively reduced, and the narrow frame of the touch display panel is favorably realized.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a touch display panel according to the present invention;
FIG. 2 is a cross-sectional view of the touch display panel of FIG. 1 taken along line A-A';
FIG. 3 is a schematic plan view of another touch display panel according to the present invention;
FIG. 4 is a schematic view of a partial plan structure of another touch display panel provided in the present invention;
FIG. 5 is a schematic plan view of another touch display panel provided in the present invention;
FIG. 6 is an enlarged view of a portion A of the touch display panel shown in FIG. 4;
FIG. 7 is a schematic cross-sectional view of the touch display panel shown in FIG. 6 along line B-B';
FIG. 8 is a schematic plan view of another touch display panel provided in the present invention;
fig. 9 is a schematic plan view of another touch display panel provided in the present invention;
FIG. 10 is a schematic plan view of another touch display panel provided in the present invention;
FIG. 11 is a schematic view of a partial plan structure of another touch display panel according to the present invention;
FIG. 12 is a schematic view of a partial plan structure of another touch display panel according to the present invention;
FIG. 13 is a schematic view of a partial plan structure of another touch display panel according to the present invention;
fig. 14 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic plan view of a touch display panel according to the present invention, and referring to fig. 1, the present embodiment provides a touch display panel, including: a display area AA and a non-display area NA surrounding the display area AA;
the display area AA includes a plurality of first electrodes 11, a plurality of first touch lines 21 and a plurality of second touch lines 22, the first electrodes 11 extend along a first direction X and are arranged along a second direction Y, the first touch lines 21 and the second touch lines 22 both extend along the second direction Y, wherein the first direction X intersects the second direction Y;
the non-display area NA comprises a driving chip 30, the driving chip 30 is located on one side of the display area AA along the second direction Y, and the first touch line 21 and the second touch line 22 are electrically connected with the driving chip 30;
a first electrode 11 corresponds to at least one first touch line 21, and the first electrode 11 is electrically connected with the first touch line 21 corresponding to the first electrode;
the first touch line 21 is a touch sensing line, and the second touch line 22 is a touch driving line; or the first touch line 21 is a touch driving line, and the second touch line 22 is a touch sensing line;
the second touch line 22 is multiplexed as a touch electrode.
Specifically, with reference to fig. 1, the touch display panel provided in this embodiment includes a display area AA and a non-display area NA surrounding the display area AA, where the display area AA has a display function, and the non-display area NA is used for placing a circuit and the like and is not used for displaying.
The display area AA includes a plurality of first electrodes 11, a plurality of first touch lines 21 and a plurality of second touch lines 22, the non-display area NA includes a driving chip 30, the first electrodes 11 extend along a first direction X and are arranged along a second direction Y, the first touch lines 21 and the second touch lines 22 extend along the second direction Y, the first touch lines 21 and the second touch lines 22 are electrically connected to the driving chip 30, one first electrode 11 corresponds to at least one first touch line 21, and the first electrode 11 is electrically connected to the corresponding first touch line 21, thereby transmitting signals to the corresponding first electrode 11 through the first touch control line 21, multiplexing the second touch control line 22 as a touch control electrode, forming a capacitance at the overlapping part of the second touch control line 22 and the first electrode 11, when a finger touches the touch display panel of the embodiment, the touch position can be determined correspondingly by detecting the position of the changed capacitance.
When the first touch lines 21 are touch sensing lines and the second touch lines 22 are touch driving lines, the second touch lines 22 are reused as touch driving electrodes, and no additional touch driving electrodes are needed, so that the manufacturing process of the touch display panel is simplified, the production cost is reduced, the thickness of the touch display panel is reduced, and the light and thin development trend of the touch display panel is complied with. When the first touch line 21 is a touch driving line and the second touch line 22 is a touch sensing line, the second touch line 22 is reused as a touch sensing electrode without additionally providing a touch sensing electrode, thereby simplifying the manufacturing process of the touch display panel, reducing the production cost, reducing the thickness of the touch display panel, and complying with the trend of light weight and thin development of the touch display panel.
The first touch line 21 and the second touch line 22 extend along the second direction Y, the first touch line 21 and the second touch line 22 are electrically connected to the driving chip 30, and the driving chip 30 is located on one side of the display area AA along the second direction Y, that is, the first touch line 21 and the second touch line 22 do not need to extend through the portion of the non-display area NA located on two sides of the display area AA along the first direction X, so that the area of the non-display area NA of the touch display panel is effectively reduced, and the narrow frame of the touch display panel is facilitated.
It should be noted that fig. 1 exemplarily shows that one first electrode 11 is electrically connected to one first touch line 21, in other embodiments of the present invention, one first electrode 11 may also be electrically connected to two or more first touch lines 21, which is not described herein again.
Fig. 2 is a cross-sectional view of the touch display panel shown in fig. 1 along a-a', and referring to fig. 1 and fig. 2, optionally, the touch display panel further includes a substrate 40, and a first electrode layer 10 and a first metal layer 20 disposed on one side of the substrate 40;
the first electrode layer 10 includes a first electrode 11, the first metal layer 20 includes a first touch line 21 and a second touch line 22, and the first touch line 21 and the second touch line 22 are formed in the same process;
the first touch line 21 is electrically connected to the first electrode 11 through the via 12.
Specifically, with continuing reference to fig. 1 and fig. 2, the touch display panel provided in this embodiment further includes a substrate 40, and a first electrode layer 10 and a first metal layer 20 disposed on one side of the substrate 40, where the first electrode layer 10 includes a first electrode 11, the first metal layer 20 includes a first touch line 21 and a second touch line 22, and the first touch line 21 is electrically connected to the first electrode 11 through a via 12, so as to transmit a signal to the first electrode 11 electrically connected thereto through the first touch line 21.
In the preparation process of the touch display panel, the first metal layer 20 is deposited on one side of the substrate base plate 40, and the first touch line 21 and the second touch line 22 are formed on the first metal layer 20 through etching of the same mask plate, so that the process of the touch display panel is simplified, and the production cost is reduced.
Fig. 3 is a schematic plan view of another touch display panel provided in the present invention, referring to fig. 3, optionally, the display area AA further includes a plurality of first metal lines 51 extending along the first direction X, and the first electrode 11 is electrically connected to at least one of the first metal lines 51 and connected in parallel.
Specifically, with reference to fig. 3, the display area AA of the touch display panel provided in this embodiment further includes a plurality of first metal lines 51 extending along the first direction X, and the first electrode 11 is electrically connected to at least one of the first metal lines 51 and connected in parallel, so as to effectively reduce the resistance of the first electrode 11, accelerate signal transmission, and improve the sensitivity of touch detection.
The first electrode 11 and the first metal line 51 may be electrically connected to each other by bonding and may be arranged in parallel. The first electrode 11 and the first metal line 51 may be electrically connected by a via and may be arranged in parallel. The present invention is not limited to this, and can be set according to actual production needs.
Fig. 4 is a schematic partial plan view of another touch display panel provided in the present invention, referring to fig. 4, optionally, wherein the display area AA further includes a plurality of pixel units 60 arranged in an array, and each pixel unit 60 includes at least two sub-pixels 61 arranged along the first direction X;
the first touch line 21 and the second touch line 22 are both touch lines 23, and at least one column of pixel units 60 arranged along the second direction Y is disposed between two adjacent touch lines 23.
Specifically, with reference to fig. 4, the display area AA further includes a plurality of pixel units 60 arranged in an array, the pixel unit 60 includes at least two sub-pixels 61 arranged along the first direction X, the first touch line 21 and the second touch line 22 are both touch lines 23, and at least one column of pixel units 60 arranged along the second direction Y is disposed between two adjacent touch lines 23. When the two adjacent touch lines 23 are two first touch lines 21, at least one column of pixel units 60 arranged along the second direction Y is disposed between the first touch line 21 and the adjacent first touch line 21. When the two adjacent touch control lines 23 are two second touch control lines 22, at least one row of pixel units 60 arranged along the second direction Y is disposed between the second touch control line 21 and the adjacent second touch control line 22. When two adjacent touch control lines 23 are a first touch control line 21 and a second touch control line 22, respectively, at least one row of pixel units 60 arranged along the second direction Y is disposed between the first touch control line 21 and the second touch control line 22 adjacent thereto.
It should be noted that fig. 4 exemplarily shows that a column of pixel units 60 arranged along the second direction Y is disposed between two adjacent touch lines 23. Referring to fig. 5, fig. 5 is a schematic plan view of another touch display panel provided in the present invention, two rows of pixel units 60 arranged along the second direction Y are disposed between two adjacent touch lines 23. In other embodiments of the present invention, three or more rows of pixel units 60 arranged along the second direction Y may be further disposed between two adjacent touch lines 23.
With continued reference to fig. 4, optionally, wherein the first and second touch lines 21 and 22 have the same line width in the first direction X.
Specifically, the first touch line 21 and the second touch line 22 are both touch lines 23, the line width of the touch lines 23 in the first direction X affects the area of the pixel unit, and the line widths of the first touch line 21 and the second touch line 22 in the first direction X are the same, so that the first touch line 21 and the second touch line 22 have the same effect on the area of the pixel unit, the area of the pixel unit in the touch display panel is effectively increased to be the same, and the display effect of the touch display panel is effectively improved.
Fig. 6 is an enlarged view of a portion a of the touch display panel shown in fig. 4, and fig. 7 is a schematic cross-sectional view of the touch display panel shown in fig. 6 along B-B', referring to fig. 4, fig. 6 and fig. 7, optionally, wherein the display area AA further includes a plurality of data lines D extending along the second direction Y, and a row of sub-pixels 61 arranged along the second direction Y is electrically connected to the same data line D;
the first metal layer 20 includes a data line D, and the data line D, the first touch line 21, and the second touch line 22 are formed in the same process.
Specifically, the display area AA further includes a plurality of data lines D extending along the second direction Y and a plurality of scan lines G extending along the first direction X, the scan lines G are electrically connected to the gates of the thin film transistors T, the data lines D are electrically connected to the sources of the thin film transistors T, the sub-pixels 61 are electrically connected to the drains of the thin film transistors T, and the thin film transistors T are turned on in response to control signals sent by the scan lines G, so that the sub-pixels 61 are charged through the data lines D.
The first metal layer comprises a data line D, the first touch line 21 and the second touch line 22 are formed in the same process, namely in the preparation process of the touch display panel, the first metal layer 20 is deposited on one side of the substrate 40, and the first touch line 21, the second touch line 22 and the data line D are formed on the first metal layer 20 through etching of the same mask plate, so that the process of the touch display panel is further simplified, and the production cost is reduced.
Fig. 8 is a schematic plan view of another touch display panel provided in the present invention, and referring to fig. 8, optionally, wherein at least one first touch line 21 arranged along the first direction X is a first touch line group 24, at least one second touch line 22 arranged along the first direction X is a second touch line group 25, at least one second touch line group 25 is disposed between two adjacent first touch line groups 24, or at least one first touch line group 24 is disposed between two adjacent second touch line groups 25;
the first touch lines 21 in the same first touch line group 24 are electrically connected to the same first electrode 11, and the first touch lines 21 in the same first touch line group 24 are electrically connected to the driving chip 30 through the same first connecting line 71;
the second touch lines 22 in the same second touch line group 25 are electrically connected to the driving chip 30 through the same second connection line 72.
Specifically, with reference to fig. 8, at least one first touch line 21 arranged along the first direction X is a first touch line group 24, at least one second touch line 22 arranged along the first direction X is a second touch line group 25, at least one second touch line group 25 is arranged between two adjacent first touch line groups 24, or at least one first touch line group 24 is arranged between two adjacent second touch line groups 25, so that the first touch line group 24 and the second touch line group 25 are arranged in an alternating manner, the first touch line group 24 and the second touch line group 25 are prevented from being arranged in a certain area of the display area AA in a concentrated manner, the first touch line group 24 and the second touch line group 25 are uniformly distributed in the display area AA, and the touch detection accuracy of the touch display panel is improved.
The first touch lines 21 in the same first touch line group 24 are electrically connected to the same first electrode 11, and the first touch lines 21 in the same first touch line group 24 are electrically connected to the driving chip 30 through the same first connecting line 71; the second touch lines 22 located in the same second touch line group 25 are electrically connected to the driving chip 30 through the same second connecting line 72, and when the first touch line group 24 includes 2 or more first touch lines 21, or/and the second touch line group 25 includes 2 or more second touch lines 22, the number of connecting lines between the first touch lines 21 and/or the second touch lines 22 and the driving chip 30 is effectively reduced, so that the area of a non-display area in the touch display panel is reduced, and the narrow framing of the touch display panel is facilitated.
It should be noted that fig. 8 exemplarily shows that the first touch line group 24 includes 2 first touch lines 21, and the second touch line group 25 includes 2 second touch lines 22, in other embodiments of the present invention, the first touch line group 24 may further include other numbers of first touch lines 21, and the second touch line group 25 may further include other numbers of second touch lines 22, which is not described herein again.
Fig. 9 is a schematic plan view of another touch display panel provided by the present invention, referring to fig. 9, optionally, wherein the first touch lines 21 are touch sensing lines, and the second touch lines 22 are touch driving lines;
the first touch line group 24 includes N1 first touch lines 21, and the second touch line group 25 includes N2 second touch lines 22; wherein the content of the first and second substances,
n1 is more than or equal to N2, N1 is more than or equal to 1, N2 is more than or equal to 2, and N1 and N2 are positive integers.
Specifically, with reference to fig. 9, the first touch lines 21 are touch sense lines, crosstalk is likely to occur between the touch sense lines, the number of the first touch lines 21 in the first touch line group 24 is smaller than the number of the second touch lines 22 in the second touch line group 25, the number of the first touch lines 21 connected in parallel in the first touch line group 24 is reduced, the crosstalk occurring in the touch display panel during touch detection is effectively reduced, and the detection accuracy of the touch display panel is improved.
Fig. 10 is a schematic plan view of another touch display panel provided by the present invention, and referring to fig. 10, optionally, the first touch lines 21 are touch driving lines, and the second touch lines 22 are touch sensing lines;
the first touch line group 24 includes n1 first touch lines 21, and the second touch line group 25 includes n2 second touch lines 22; wherein the content of the first and second substances,
n1 is more than n2, n1 is more than or equal to 2, n2 is more than or equal to 1, and n1 and n2 are both positive integers.
Specifically, with reference to fig. 10, the second touch lines 22 are touch sensing lines, crosstalk is likely to occur between the touch sensing lines, the number of the second touch lines 22 in the second touch line group 25 is smaller than the number of the first touch lines 21 in the first touch line group 24, the number of the second touch lines 22 connected in parallel in the second touch line group 25 is reduced, the crosstalk occurring in the touch display panel during touch detection is effectively reduced, and the detection accuracy of the touch display panel is improved.
It should be noted that fig. 9 and fig. 10 exemplarily show that 2 touch driving lines are connected in parallel, and 1 touch sensing line is separately arranged, in other embodiments of the present invention, the touch driving lines and the touch sensing lines may also adopt other arrangement manners, only the number of the touch sensing lines connected in parallel is less than the number of the touch driving lines connected in parallel, and the present invention is not described herein again.
Fig. 11 is a schematic view of a partial plan structure of another touch display panel provided in the present invention, referring to fig. 8 and fig. 11, optionally, wherein the driving chip 30 includes a plurality of first bonding pads 31 and a plurality of second bonding pads 32;
the first connection line 71 is electrically connected to the driving chip 30 through the first pad 31, and the second connection line 72 is electrically connected to the driving chip 30 through the second pad 32.
Specifically, with continued reference to fig. 8 and 11, the first touch line 21 is electrically connected to the first connection line 71, and the first connection line 71 is electrically connected to the driving chip 30 through the first pad 31, so that the first touch line 21 and the driving chip 30 are electrically connected. The second touch control line 22 is electrically connected to the second connection line 72, and the second connection line 72 is electrically connected to the driving chip 30 through the second bonding pad 32, so that the second touch control line 22 and the driving chip 30 are electrically connected.
Fig. 12 is a schematic view of a partial plan structure of another touch display panel provided by the present invention, referring to fig. 12, optionally, at least one second bonding pad 32 is disposed between at least some adjacent first bonding pads 31, and at least one first bonding pad 31 is disposed between at least some adjacent second bonding pads 32.
Specifically, with reference to fig. 12, in the driving chip 30, the first bonding pad 31 is electrically connected to the first connecting line 71, the second bonding pad 32 is electrically connected to the second connecting line 72, different signals are transmitted to the first connecting line 71 and the second connecting line 72 through the first bonding pad 31 and the second bonding pad 32, and the first bonding pad 31 and the second bonding pad 32 are arranged in an inserting manner, so that signal interference between the first bonding pad 31 and the second bonding pad 32 can be reduced, and the touch detection precision of the touch display panel is improved.
Fig. 13 is a schematic view of a partial plan structure of another touch display panel provided by the present invention, referring to fig. 13, optionally, wherein the first pads 31 and the second pads 32 form a plurality of pad unit groups 33, and each pad unit group 33 includes at least one first pad 31 and at least one second pad 32.
Specifically, with reference to fig. 13, the first pad 31 and the second pad 32 form a plurality of pad unit groups 33, each pad unit group 33 includes at least one first pad 31 and at least one second pad 32, that is, the first pad 31 and the second pad 32 are arranged in a penetrating manner and regularly, so that the signal interference between the first pad 31 and the second pad 32 is effectively reduced, the difficulty in arranging the first pad 31 and the second pad 32 is reduced, and the production efficiency is improved.
It should be noted that fig. 11 exemplarily shows that each pad unit group 33 includes one first pad 31 and one second pad 32, and fig. 13 exemplarily shows that each pad unit group 33 includes two first pads 31 and one second pad 32, in other embodiments of the present invention, each pad unit group 33 may further include other numbers of first pads 31 and other numbers of second pads 32 according to actual production requirements, and exemplarily, each pad unit group 33 may further include two first pads 31 and two second pads 32; or each pad unit group 33 may further include one first pad 31 and two second pads 32, which is not described in detail herein.
Optionally, with continuing reference to fig. 13, the first connection lines 71 and the second connection lines 72 may adopt an arrangement manner corresponding to the first pads 31 and the second pads 32, the extending directions of the first connection lines 71 and the second connection lines 72 are the same, so that crosstalk between the first connection lines 71 and the second connection lines 72 is effectively reduced, and the first connection lines 71 and the second connection lines 72 may be formed by etching through the same metal layer, which simplifies the process of the touch display panel of the present application and reduces the production cost.
Optionally, the arrangement of the first pad 31 and the second pad 32 and the arrangement of the first connecting line 71 and the second connecting line 72 may be the same as the arrangement of the first touch line group 24 and the second touch line group 25, so that the wiring difficulty in the touch display panel is effectively reduced.
With continued reference to fig. 4, 6 and 7, optionally, the first electrode layer 10 is located on a side of the first metal layer 20 away from the substrate base plate 40, and the first electrode 11 includes a plurality of hollow parts 13;
the first touch lines 21 and the second touch lines 22 are touch lines 23, the hollow parts 13 correspond to the touch lines 23 one by one, and the hollow parts 13 and the corresponding touch lines 23 are at least partially overlapped in a direction perpendicular to a plane where a light emitting surface of the touch display panel is located.
Specifically, the first electrode 11 includes a plurality of hollow portions 13, the hollow portions 13 correspond to the touch lines 23 one by one, and in a direction perpendicular to a plane where the light exit surface of the touch display panel is located, the hollow portions 13 and the touch lines 23 corresponding thereto are at least partially overlapped, so that a shielding effect of the first electrode 11 on electric field signals on the touch lines 23 is effectively reduced, the electric field signals spread on the surface of the touch display panel on the touch lines 23 are enhanced, and the touch detection sensitivity of the touch display panel is improved.
The embodiment provides a display device, which comprises the touch display panel.
Referring to fig. 14, fig. 14 is a schematic plan view of a display device according to the present invention. Fig. 14 provides a display device 1000 including a touch display panel 100, wherein the touch display panel is the touch display panel 100 according to any of the above embodiments of the present invention. The embodiment of fig. 14 is only an example of a mobile phone, and the display device 1000 is described, but it should be understood that the display device provided in the embodiment of the present invention may be other display devices having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
As can be seen from the above embodiments, the touch display panel and the display device provided by the present invention at least achieve the following beneficial effects:
the invention provides a touch display panel, which comprises a display area and a non-display area surrounding the display area, wherein the display area comprises a plurality of first electrodes, a plurality of first touch lines and a plurality of second touch lines, the non-display area comprises a driving chip, the first electrodes extend along a first direction and are arranged along a second direction, the first touch lines and the second touch lines extend along the second direction, the first touch lines and the second touch lines are electrically connected with the driving chip, one first electrode corresponds to at least one first touch line, the first electrodes are electrically connected with the corresponding first touch lines, so that signals are transmitted to the corresponding first electrodes through the first touch lines, the second touch lines are multiplexed as touch electrodes, and the overlapping part of the second touch lines and the first electrodes forms a capacitor, when a finger touches the touch display panel of the embodiment, the position of the changed capacitor is detected, the touch location may be determined accordingly. When the first touch lines are touch sensing lines and the second touch lines are touch driving lines, the second touch lines are reused as touch driving electrodes without additionally arranging touch driving electrodes, so that the manufacturing process of the touch display panel is simplified, the production cost is reduced, the thickness of the touch display panel is reduced, and the trend of light and thin development of the touch display panel is complied with. When the first touch lines are touch driving lines and the second touch lines are touch sensing lines, the second touch lines are reused as touch sensing electrodes without additionally arranging touch sensing electrodes, so that the manufacturing process of the touch display panel is simplified, the production cost is reduced, the thickness of the touch display panel is reduced, and the trend of light and thin development of the touch display panel is complied with. The first touch line and the second touch line extend along the second direction, the first touch line and the second touch line are electrically connected with the driving chip, and the driving chip is located on one side of the display area along the second direction, namely, the first touch line and the second touch line do not need to extend to the parts, located on two sides of the display area relatively along the first direction, in the non-display area, so that the area of the non-display area of the touch display panel is effectively reduced, and the narrow frame of the touch display panel is favorably realized.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (14)
1. A touch display panel, comprising: a display area and a non-display area surrounding the display area;
the display area comprises a plurality of first electrodes, a plurality of first touch lines and a plurality of second touch lines, the first electrodes extend along a first direction and are arranged along a second direction, the first touch lines and the second touch lines both extend along the second direction, and the first direction and the second direction are intersected;
the non-display area comprises a driving chip, the driving chip is located on one side of the display area along the second direction, and the first touch line and the second touch line are electrically connected with the driving chip;
one first electrode corresponds to at least one first touch control line, and the first electrode is electrically connected with the corresponding first touch control line;
the first touch control line is a touch control induction line, and the second touch control line is a touch control drive line; or the first touch control line is a touch control driving line, and the second touch control line is a touch control induction line;
the second touch control lines are multiplexed into touch control electrodes.
2. The touch display panel according to claim 1, further comprising a substrate, and a first electrode layer and a first metal layer disposed on one side of the substrate;
the first electrode layer includes the first electrode, the first metal layer includes the first and second touch lines, and the first and second touch lines are formed in the same process; the first touch line is electrically connected with the first electrode through a via hole.
3. The touch display panel of claim 1,
the line widths of the first touch line and the second touch line in the first direction are the same.
4. The touch display panel of claim 1,
the display area further comprises a plurality of first metal wires extending along the first direction, and the first electrode is electrically connected with at least one first metal wire in parallel.
5. The touch display panel of claim 2,
the display area further comprises a plurality of pixel units which are arranged in an array mode, and each pixel unit comprises at least two sub-pixels which are arranged along the first direction;
the first touch control line and the second touch control line are touch control lines, and at least one row of pixel units arranged along the second direction is arranged between every two adjacent touch control lines.
6. The touch display panel of claim 5,
at least one first touch line arranged along the first direction is a first touch line group, at least one second touch line arranged along the first direction is a second touch line group, at least one second touch line group is arranged between two adjacent first touch line groups, or at least one first touch line group is arranged between two adjacent second touch line groups;
the first touch control lines in the same first touch control line group are electrically connected with the same first electrode, and the first touch control lines in the same first touch control line group are electrically connected with the driving chip through the same first connecting line;
the second touch control lines in the same second touch control line group are electrically connected with the driving chip through the same second connecting line.
7. The touch display panel of claim 6,
the first touch control line is a touch control induction line, and the second touch control line is a touch control drive line;
the first touch line group comprises N1 first touch lines, and the second touch line group comprises N2 second touch lines; wherein the content of the first and second substances,
n1 is more than or equal to N2, N1 is more than or equal to 1, N2 is more than or equal to 2, and N1 and N2 are positive integers.
8. The touch display panel of claim 6,
the first touch control line is a touch control driving line, and the second touch control line is a touch control induction line;
the first touch line group comprises n1 first touch lines, and the second touch line group comprises n2 second touch lines; wherein the content of the first and second substances,
n1 is more than n2, n1 is more than or equal to 2, n2 is more than or equal to 1, and n1 and n2 are both positive integers.
9. The touch display panel of claim 6,
the driving chip comprises a plurality of first bonding pads and a plurality of second bonding pads;
the first connecting line is electrically connected with the driving chip through the first bonding pad, and the second connecting line is electrically connected with the driving chip through the second bonding pad.
10. The touch display panel of claim 9,
at least one second bonding pad is arranged between at least part of the adjacent first bonding pads, and at least one first bonding pad is arranged between at least part of the adjacent second bonding pads.
11. The touch display panel of claim 9,
the first bonding pad and the second bonding pad form a plurality of bonding pad unit groups, and each bonding pad unit group comprises at least one first bonding pad and at least one second bonding pad.
12. The touch display panel of claim 5,
the display area also comprises a plurality of data lines extending along the second direction, and a column of the sub-pixels arranged along the second direction are electrically connected with the same data line;
the first metal layer includes the data line, and the data line, the first touch line, and the second touch line are formed in the same process.
13. The touch display panel of claim 2,
the first electrode layer is positioned on one side of the first metal layer far away from the substrate, and the first electrode comprises a plurality of hollow parts;
the first touch control lines and the second touch control lines are touch control lines, the hollow parts correspond to the touch control lines one by one, and at least part of the hollow parts and the touch control lines corresponding to the hollow parts are overlapped in a direction perpendicular to a plane where a light emitting surface of the touch control display panel is located.
14. A display device comprising the touch display panel according to any one of claims 1 to 13.
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| CN113282199B (en) | 2023-05-02 |
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