CN114115577A - Touch display module, electronic device and touch position detection method - Google Patents
Touch display module, electronic device and touch position detection method Download PDFInfo
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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
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Abstract
A touch display module, an electronic device and a touch position detection method are provided. The touch sensing layer is embedded in the display panel and comprises a plurality of sensing electrode groups. The induction electrode groups are sequentially arranged along the first axial direction. One of the sensing electrode sets comprises a first electrode block, a second electrode block and a third electrode block which are separated. The first electrode block is located on the same side of the second electrode block and the third electrode block in the first axial direction, and is located between the second electrode block and the third electrode block in the second axial direction perpendicular to the first axial direction. Therefore, the number of the wires from the touch sensing layer to the control circuit can be greatly reduced, so that the design of the touch wafer is facilitated to be simplified, and the risk of short circuit between the electrode blocks of the touch sensing layer is facilitated to be reduced, so that the reliability of the product is improved.
Description
Technical Field
The invention relates to a touch display module, an electronic device and a touch position detection method.
Background
The embedded touch technology can make the touch module inside the display, so that the device has the advantages of light weight and high brightness. The operation principle of the common embedded touch display in the market is that self-capacitance touch sensing is performed through a plurality of rectangular touch electrodes arranged in an internal matrix, and each touch electrode needs a separate wire to transmit the sensing result to the touch chip.
However, as the demand for touch resolution increases, the number of channels of a common touch chip is not sufficient to support such a design, and the touch electrodes are easily short-circuited by a large number of dense traces.
Therefore, how to provide a touch display module capable of solving the above problems is one of the problems in the art that research and development resources are urgently needed to solve.
Disclosure of Invention
In view of the above, an objective of the present invention is to provide a touch display module capable of solving the above problems.
In order to achieve the above object, according to an embodiment of the present invention, a touch display module includes a display panel and a touch sensing layer. The touch sensing layer is embedded in the display panel and comprises a plurality of sensing electrode groups. The induction electrode groups are sequentially arranged along the first axial direction. One of the sensing electrode sets comprises a first electrode block, a second electrode block and a third electrode block which are separated. The first electrode block is located on the same side of the second electrode block and the third electrode block in the first axial direction, and is located between the second electrode block and the third electrode block in the second axial direction perpendicular to the first axial direction.
In one or more embodiments of the present invention, the display panel has a visible region. The second electrode block and the third electrode block extend towards each other from two opposite edges of the visual area respectively.
In one or more embodiments of the present invention, a first gap is formed between the first electrode block and the second electrode block. A second gap is formed between the first electrode block and the third electrode block. The extending directions of the first gap and the second gap are inclined relative to the first axial direction and the second axial direction.
In one or more embodiments of the present invention, one end of the first gap communicates with one end of the second gap.
In one or more embodiments of the present invention, at least one of the first gap and the second gap has a saw-tooth shape.
In one or more embodiments of the present invention, the display panel has a visible region. The sensing electrode set further comprises two conductive extension parts. The two conductive extension parts are connected with one of the first electrode block, the second electrode block and the third electrode block and extend out of the visible area.
In one or more embodiments of the present invention, the sensing electrode set further includes a fourth electrode block. The fourth electrode block is located between the second electrode block and the third electrode block in the second axial direction. The second electrode block and the third electrode block are located between the first electrode block and the fourth electrode block in the first axial direction.
In one or more embodiments of the present invention, the first electrode block, the second electrode block, the third electrode block and the fourth electrode block are annularly arranged.
In one or more embodiments of the present invention, an outer edge profile of at least one of the first electrode block, the second electrode block and the third electrode block is substantially triangular.
In one or more embodiments of the present invention, the orthographic projection of all the sub-pixels of the display panel on the touch sensing layer is within the range of the sensing electrode set.
In one or more embodiments of the present invention, the display panel is a liquid crystal display panel or an organic light emitting diode display panel.
In order to achieve the above object, according to an embodiment of the present invention, an electronic device includes the touch display module and a cover plate. The cover plate is arranged on the touch display module.
In order to achieve the above object, according to an embodiment of the present invention, a touch position detecting method is applied to an electronic device including a plurality of sensing electrode sets. The sensing electrode groups are sequentially arranged along a first axial direction and respectively comprise a first electrode block, a second electrode block and a third electrode block which are separated from each other. The first electrode block is located on the same side of the second electrode block and the third electrode block in the first axial direction and located between the second electrode block and the third electrode block in the second axial direction. The touch position detection method comprises the following steps: obtaining a first axis coordinate of the touch point in a first axis direction according to the induction electrode group with the capacitance change; and calculating a second axis coordinate of the touch point in the second axis direction according to the capacitance changes of at least two of the first electrode block, the second electrode block and the third electrode block of the sensing electrode group.
In one or more embodiments of the present invention, the step of calculating the second axis coordinate includes: judging whether the second electrode block and the third electrode block have capacitance change at the same time; if the second electrode block and the third electrode block have capacitance changes at the same time, calculating a second axis coordinate according to the capacitance changes of the first electrode block, the second electrode block and the third electrode block; and if the second electrode block and the third electrode block do not have capacitance changes at the same time, calculating a second axis coordinate according to the capacitance changes of the first electrode block and the second electrode block or the capacitance changes of the first electrode block and the third electrode block.
In summary, in the touch display module of the present invention, the touch sensing layer embedded in the display panel includes a plurality of sensing electrode sets sequentially arranged along the first axial direction, and the sensing electrode sets include first electrode blocks, second electrode blocks and third electrode blocks which are separated and staggered in the second axial direction. Therefore, compared with the traditional embedded touch display with a plurality of rectangular touch electrodes arranged in a matrix, the electronic device can greatly reduce the number of the wires from the touch sensing layer to the control circuit, thereby being beneficial to simplifying the design of the touch wafer and reducing the risk of short circuit among the electrode blocks of the touch sensing layer so as to improve the reliability of the product. In addition, because the number of the used wires is small, the touch sensing layer does not need to be coupled with the wires through a via hole (via hole), thereby facilitating the simplification of the manufacturing process and improving the production yield.
The foregoing is merely illustrative of the problems to be solved, solutions to problems, and effects produced by the present invention, and specific details thereof are set forth in the following description and the related drawings.
Drawings
In order to make the aforementioned and other objects, features, and advantages of the invention, as well as others which will become apparent, reference is made to the following description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic cross-sectional view illustrating an electronic device according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view illustrating an electronic device according to another embodiment of the invention;
FIG. 3 is a front view of the touch sensing layer of FIG. 1 in one embodiment;
FIG. 4 is an enlarged view showing a partial region of FIG. 3;
FIG. 5 is a functional block diagram of an electronic device according to an embodiment;
FIG. 6 is a front view of a touch sensing layer according to another embodiment of the invention;
FIG. 7 is a front view of a touch sensing layer according to another embodiment of the invention;
FIG. 8 is a functional block diagram of an electronic device according to another embodiment;
FIG. 9 is a flowchart illustrating a touch position detecting method according to an embodiment of the invention;
FIG. 10 is a schematic diagram illustrating capacitance changes of different portions of a sensing electrode set due to touch;
FIG. 11 is another schematic diagram illustrating capacitance changes of different portions of the sensing electrode set due to touch;
fig. 12 is another schematic diagram illustrating capacitance changes of different portions of the sensing electrode set due to touch.
[ notation ] to show
100,200 electronic device
110,210 display panel
111 first polarizing layer
112,211 lower substrate
113,213 insulating layer
114 thin film transistor layer
115 liquid crystal layer
116 color filter
117,215 Upper base plate
118 second polarizing layer
120,120A,320 touch sensing layer
121,321 sense electrode set
121a,321a first electrode block
121b,321b second electrode block
121c,321c third electrode block
122 conductive extension
130: cover plate
140 routing
150 control circuit
212 metallic conductive layer
214r,214g,214b organic light emitting layer
321d fourth electrode block
AA visual area
A1 first axial direction
A2 second axial direction
G1 first gap
G2 second gap
R is a local region
SP sub-pixel
S101 to S104
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner.
Fig. 1 is a schematic cross-sectional view illustrating an electronic device 100 according to an embodiment of the invention. As shown in fig. 1, in the present embodiment, the electronic device 100 includes a touch display module and a cover plate 130. The cover plate 130 is disposed on the touch display module. The material of the cover plate 130 includes glass, for example. The touch display module includes a display panel 110 and a touch sensing layer 120. The touch sensing layer 120 is embedded in the display panel 110. The display panel 110 includes, in order from bottom to top, a first polarizing layer 111, a lower substrate 112, an insulating layer 113, a thin film transistor layer 114, a liquid crystal layer 115, a plurality of color filters 116, an upper substrate 117, and a second polarizing layer 118. Specifically, the touch sensing layer 120 is embedded between the lower substrate 112 and the insulating layer 113. In other words, the display panel 110 of the present embodiment is a liquid crystal display panel, but the invention is not limited thereto.
Fig. 2 is a schematic cross-sectional view illustrating an electronic device 200 according to another embodiment of the invention. As shown in fig. 2, in the present embodiment, the touch display module of the electronic device 200 includes a display panel 210 and a touch sensing layer 120. The touch sensing layer 120 is embedded in the display panel 210. The display panel 210 includes, in order from bottom to top, a lower substrate 211, a metal conductive layer 212, a plurality of organic light emitting layers 214r,214g,214b embedded in an insulating layer 213, and an upper substrate 215. Specifically, the touch sensing layer 120 is embedded between the organic light emitting layers 214r,214g,214b and the upper substrate 215. In other words, the display panel 210 of the present embodiment is an Organic Light-Emitting Diode (OLED) display panel. In another embodiment, the positions of the metal conductive layer 212 and the touch sensing layer 120 can be interchanged.
In some embodiments, the electronic device 100,200 may be a smart phone, a tablet computer or a notebook computer, but the invention is not limited thereto.
Fig. 3 is a front view of the touch sensing layer 120 shown in fig. 1 according to an embodiment. As shown in fig. 3, in the present embodiment, the touch sensing layer 120 includes a plurality of sensing electrode sets 121. The sensing electrode sets 121 are sequentially arranged along a first axis a 1. Each of the sensing electrode sets 121 includes a first electrode block 121a, a second electrode block 121b, and a third electrode block 121c that are separated from each other. The first electrode segment 121a is located on the same side of the second electrode segment 121b and the third electrode segment 121c in the first axial direction a1, and is located between the second electrode segment 121b and the third electrode segment 121c in the second axial direction a2 perpendicular to the first axial direction a 1.
Specifically, as shown in fig. 3, the display panel 110 has a visible area AA. The second electrode block 121b and the third electrode block 121c extend from two opposite edges (e.g., an upper edge and a lower edge) of the viewing area AA respectively. In other words, each sensing electrode set 121 extends to both the upper and lower edges of the visible area AA in the second axial direction a 2.
A first gap G1 is formed between the first electrode block 121a and the second electrode block 121 b. A second gap G2 is formed between the first electrode block 121a and the third electrode block 121 c. The extending directions of the first gap G1 and the second gap G2 are inclined with respect to the first axial direction a1 and the second axial direction a 2. Thus, the widths of the first electrode block 121a, the second electrode block 121b and the third electrode block 121c in the first axial direction a1 are changed along the second axial direction a 2. In some embodiments, as shown in fig. 3, the width of the first electrode segment 121a in the first axial direction a1 increases from top to bottom along the second axis and then decreases. The width of the second electrode segment 121b in the first axial direction a1 gradually decreases from top to bottom along the second axis. The width of the third electrode segment 121c in the first axial direction a1 gradually increases from top to bottom along the second axis.
In some embodiments, as shown in fig. 3, the first gap G1 and the second gap G2 extend straight, and one end of the first gap G1 communicates with one end of the second gap G2, so that the outer edge profiles of the first electrode block 121a, the second electrode block 121b and the third electrode block 121c are substantially triangular. For example, as shown in fig. 3, the outer edge of the first electrode block 121a is an isosceles triangle, and the outer edge of the second electrode block 121b and the third electrode block 121c are right triangles, and from another perspective, the first electrode block 121a, the second electrode block 121b and the third electrode block 121c can be assembled into a rectangle.
The outer edge profiles of the first electrode block 121a, the second electrode block 121b and the third electrode block 121c are not limited to the above embodiments. In practical applications, only one or two of the first electrode segment 121a, the second electrode segment 121b and the third electrode segment 121c may have a substantially triangular outer edge profile. For example, in some embodiments, the outer edge profiles of the second electrode area 121b and the third electrode area 121c are right triangles, and the outer edge profile of the first electrode area 121a is parallelogram (e.g., by making the third electrode area 121c in fig. 3 mirror in the first axis a 1). In other embodiments, the outer edge of the first electrode block 121a is triangular, and the outer edge of at least one of the second electrode block 121b and the third electrode block 121c is trapezoidal. (e.g., by reducing the length of the first electrode segment 121a in the first axial direction a 1).
Fig. 4 is an enlarged view of a partial region R of fig. 3. As shown in fig. 4, in the present embodiment, the display panel 110 includes a plurality of sub-pixels SP arranged in the visible area AA. The three sub-pixels SP shown in fig. 3 can be used for emitting red light, green light and blue light, respectively, for example, but the color arrangement and combination of the sub-pixels SP of the present invention are not limited thereto. It should be noted that the orthographic projection of all the sub-pixels SP of the display panel 110 on the touch sensing layer 120 is located within the range of the sensing electrode group 121. In other words, the touch sensing layer 120 covers the area of all the sub-pixels SP. In order to achieve the above object, at least one of the first gap G1 between the first and second electrode blocks 121a and 121b and the second gap G2 between the first and third electrode blocks 121a and 121c has a zigzag profile.
Referring to fig. 5, a functional block diagram of the electronic devices 100 and 200 in one embodiment is shown. As shown in fig. 5, in the present embodiment, the electronic devices 100 and 200 have a self-contained touch function, and further include a control circuit 150 and a plurality of traces 140. The sensing electrode set 121 further includes a plurality of conductive extensions 122. Each conductive extension portion 122 is connected to one of the first electrode area 121a, the second electrode area 121b and the third electrode area 121c, and extends to the outside of the visible area AA. Each conductive extension 122 is further connected to the control circuit 150 through the corresponding trace 140.
The capacitance of each of the sensing electrode sets 121 varies according to a touch input, such as a user's finger approaching or approaching the electronic device 100, 200. The capacitance variation of the sensing electrode set 121 is transmitted to the control circuit 150 through the trace 140, and the control circuit 150 is configured to calculate the positions of the touch input in the first axial direction a1 and the second axial direction a2 according to the received capacitance variation.
In some embodiments, the first electrode block 121a, the second electrode block 121b, the third electrode block 121c and the conductive extension 122 of the sensing electrode set 121 are made of the same material. As shown in fig. 5, the conductive extension portion 122 is located on a side of the sensing electrode set 121 close to the edge of the visible area AA, so as to extend out of the visible area AA. In some embodiments, the first electrode block 121a, the second electrode block 121b and the third electrode block 121c are respectively connected to two conductive extensions 122, so as to avoid a problem that the conductive extensions 122 are broken during the manufacturing process of the touch sensing layer 120 and cannot transmit the capacitance signals of the first electrode block 121a, the second electrode block 121b and the third electrode block 121c to the control circuit 150 through the trace 140. In other words, the above method can increase the reliability and reduce the impedance. In some embodiments, the first electrode block 121a, the second electrode block 121b and the third electrode block 121c may also be connected to more than two conductive extensions 122.
Fig. 6 is a front view of a touch sensing layer 120A according to another embodiment of the invention. As shown in fig. 6, in the present embodiment, the touch sensing layer 120A also includes a plurality of sensing electrode sets 121 sequentially arranged along the first axis a 1. Compared to the touch sensing layer 120 shown in fig. 3, the touch sensing layer 120A of the present embodiment modifies the arrangement of the first electrode blocks 121a, the second electrode blocks 121b and the third electrode blocks 121c in some of the sensing electrode groups 121. Specifically, the first electrode blocks 121a, the second electrode blocks 121b and the third electrode blocks 121c of each of the sensing electrode sets 121 in fig. 3 are arranged in the same manner. In fig. 6, the first electrode blocks 121a, the second electrode blocks 121b and the third electrode blocks 121c of any two adjacent sensing electrode groups 121 are arranged in a left-right symmetrical manner along the first axial direction a 1.
Please refer to fig. 7 and fig. 8. Fig. 7 is a front view illustrating a touch sensing layer 320 according to another embodiment of the invention. Fig. 8 is a functional block diagram of the electronic devices 100 and 200 according to another embodiment. As shown in fig. 7 and 8, in the present embodiment, the touch sensing layer 320 also includes a plurality of sensing electrode sets 321 sequentially arranged along the first axial direction a 1. Compared to the touch sensing layer 120 shown in fig. 3, the present embodiment increases the number of electrode blocks included in each sensing electrode group 121. Specifically, in the present embodiment, each of the sensing electrode sets 321 includes a first electrode block 321a, a second electrode block 321b, a third electrode block 321c and a fourth electrode block 321 d. The fourth electrode block 321d is located between the second electrode block 321b and the third electrode block 321c in the second axial direction a 2. The second electrode block 321b and the third electrode block 321c are located between the first electrode block 321a and the fourth electrode block 321d in the first axial direction a 1. Further, the first electrode block 321a, the second electrode block 321b, the third electrode block 321c and the fourth electrode block 321d are annularly arranged. Each of the first electrode block 321a, the second electrode block 321b, the third electrode block 321c and the fourth electrode block 321d can be connected to one or more conductive extensions 122 extending outside the visible area AA, and connected to the control circuit 150 through the trace 140.
Fig. 9 is a flowchart illustrating a touch position detecting method according to an embodiment of the invention. As shown in fig. 9, in the present embodiment, the touch position detecting method mainly includes steps S101 to S104, and can be applied to electronic devices 100 and 200 including a plurality of sensing electrode sets 121. As described above, the sensing electrode groups 121 are sequentially arranged along the first axis a1, and each includes the first electrode block 121a, the second electrode block 121b, and the third electrode block 121c, which are separated from each other. The first electrode block 121a is located on the same side of the second electrode block 121b and the third electrode block 121c in the first axial direction a1, and is located between the second electrode block 121b and the third electrode block 121c in the second axial direction a 2. For example, the touch position detection method can be executed by the control circuit 150.
In step S101, a first axial coordinate of the touch point in the first axial direction a1 is obtained according to the sensing electrode set 121 having a capacitance variation.
Referring to fig. 3, when the touch point is located on one sensing electrode set 121, only the sensing electrode set 121 generates capacitance change, and the other sensing electrode sets 121 do not generate capacitance change. Since the sensing electrode sets 121 are sequentially arranged along the first axis a1, the control circuit 150 can know the first axis coordinate represented by the sensing electrode set 121 according to the sensing electrode set 121 with capacitance variation.
After determining the first axis coordinate of the touch point in the first axis a1, steps S102 to S104 may be performed to calculate the second axis coordinate of the touch point in the second axis a 2.
In step S102, whether the second electrode block 121b and the third electrode block 121c have capacitance variation at the same time is determined. If the second electrode block 121b and the third electrode block 121c have capacitance changes at the same time (i.e., the determination result in step S102 is yes), step S104 is further performed according to the touch position detection method; if the second electrode block 121b and the third electrode block 121c do not have capacitance variation at the same time (i.e., the determination result in step S102 is no), step S103 is further performed according to the touch position detecting method.
Reference is now made to fig. 10-12. Fig. 10 is a schematic diagram illustrating capacitance changes of different portions of the sensing electrode set 121 due to touch. Fig. 11 is another schematic diagram illustrating capacitance changes of different portions of the sensing electrode set 121 due to touch. Fig. 12 is another schematic diagram illustrating capacitance changes of different portions of the sensing electrode set 121 due to touch.
In step S103, a second axis coordinate of the touch point in the second axis direction a2 is calculated according to the capacitance changes of the first electrode block 121a and the second electrode block 121b or the capacitance changes of the first electrode block 121a and the third electrode block 121 c.
If the control circuit 150 detects that the second electrode block 121b and the third electrode block 121c do not have capacitance variation at the same time, it can further evaluate whether the touch point falls on the upper half area (i.e., the area where the second electrode block 121b is located) or the lower half area (i.e., the area where the third electrode block 121c is located) of the sensing electrode set 121. For example, as shown in fig. 10, if it is detected that the second electrode block 121b has a capacitance variation and the third electrode block 121c has no capacitance variation, the control circuit 150 can lock the analysis area in the upper half area of the sensing electrode set 121, and then accurately calculate the second axis coordinate of the touch point in the second axis a2 according to the capacitance variations of the first electrode block 121a and the second electrode block 121 b. As shown in fig. 11, if it is detected that the third electrode block 121c has a capacitance variation and the second electrode block 121b does not have a capacitance variation, the control circuit 150 can lock the analysis area in the lower half area of the sensing electrode set 121, and then accurately calculate the second axis coordinate of the touch point in the second axis direction a2 according to the capacitance variations of the first electrode block 121a and the third electrode block 121 c.
In step S104, a second axis coordinate of the touch point in the second axial direction a2 is calculated according to the capacitance changes of the first electrode segment 121a, the second electrode segment 121b, and the third electrode segment 121 c.
If the control circuit 150 detects that the second electrode block 121b and the third electrode block 121c have capacitance changes at the same time, it can be determined that the touch point falls in the central region of the sensing electrode group 121 (i.e., the boundary region of the first electrode block 121a, the second electrode block 121b and the third electrode block 121 c). Therefore, the control circuit 150 can lock the analysis area in the central area of the sensing electrode group 121, and then accurately calculate a second axis coordinate of the touch point in the second axis direction a2 according to the capacitance changes of the first electrode block 121a, the second electrode block 121b and the third electrode block 121 c.
As can be seen from the above embodiments, the sensing electrode group 121 including the first electrode block 121a, the second electrode block 121b and the third electrode block 121c enables the control circuit 150 to know that the touch point is located in the lower half area or the central area of the upper half area of the sensing electrode group 121, so that the calculation area of the control circuit 150 is reduced to approximately half. Therefore, the electronic devices 100 and 200 can achieve an accuracy more than twice that of the conventional touch device by using analog-to-digital converters (ADCs) with the same resolution.
As can be clearly seen from the above detailed description of the embodiments of the invention, in the touch display module of the invention, the touch sensing layer embedded in the display panel includes a plurality of sensing electrode sets sequentially arranged along the first axial direction, and the sensing electrode sets include first electrode blocks, second electrode blocks and third electrode blocks which are separated and staggered in the second axial direction. Therefore, compared with the traditional embedded touch display with a plurality of rectangular touch electrodes arranged in a matrix, the electronic device can greatly reduce the number of the wires from the touch sensing layer to the control circuit, thereby being beneficial to simplifying the design of the touch wafer and reducing the risk of short circuit among the electrode blocks of the touch sensing layer so as to improve the reliability of the product. In addition, because the number of the used wires is small, the touch sensing layer does not need to be coupled with the wires through a via hole (via hole), thereby facilitating the simplification of the manufacturing process and improving the production yield.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A touch display module, comprising:
a display panel; and
the touch sensing layer is embedded in the display panel and comprises a plurality of sensing electrode groups, the sensing electrode groups are sequentially arranged along a first axial direction, one of the sensing electrode groups comprises a first electrode block, a second electrode block and a third electrode block which are separated, and the first electrode block is positioned on the same side of the second electrode block and the third electrode block in the first axial direction and positioned between the second electrode block and the third electrode block in a second axial direction perpendicular to the first axial direction.
2. The touch display module of claim 1, wherein the display panel has a visible area, and the second electrode area and the third electrode area extend from two opposite edges of the visible area toward each other.
3. The touch display module of claim 1, wherein a first gap is formed between the first electrode block and the second electrode block, a second gap is formed between the first electrode block and the third electrode block, and the extending directions of the first gap and the second gap are inclined with respect to the first axial direction and the second axial direction.
4. The touch display module of claim 3, wherein one end of the first gap is in communication with one end of the second gap.
5. The touch display module of claim 3, wherein at least one of the first gap and the second gap has a saw-tooth shape.
6. The touch display module of claim 1, wherein the display panel has a visible area, and the one of the plurality of sensor electrode sets further comprises two conductive extension portions connected to one of the first electrode block, the second electrode block, and the third electrode block and extending outside the visible area.
7. The touch display module of claim 1, wherein the one of the plurality of sensing electrode sets further comprises a fourth electrode block located between the second electrode block and the third electrode block in the second axial direction, and the second electrode block and the third electrode block are located between the first electrode block and the fourth electrode block in the first axial direction.
8. The touch display module of claim 7, wherein the first electrode block, the second electrode block, the third electrode block and the fourth electrode block are arranged in a ring.
9. The touch display module of claim 1, wherein at least one of the first electrode block, the second electrode block, and the third electrode block has a triangular outer edge.
10. The touch display module of claim 1, wherein the orthographic projection of all the sub-pixels of the display panel on the touch sensing layer is within the range of the sensing electrode sets.
11. The touch display module of claim 1, wherein the display panel is a liquid crystal display panel or an organic light emitting diode display panel.
12. An electronic device, comprising:
a touch display module according to any one of claims 1 to 11; and
and the cover plate is arranged on the touch display module.
13. A touch position detecting method applied to an electronic device including a plurality of sensing electrode sets, the plurality of sensing electrode sets being sequentially arranged along a first axial direction and each including a first electrode block, a second electrode block and a third electrode block which are separated from each other, wherein the first electrode block is located on the same side of the second electrode block and the third electrode block in the first axial direction and located between the second electrode block and the third electrode block in the second axial direction, the touch position detecting method comprising:
obtaining a first axis coordinate of a touch point in the first axis direction according to the sensing electrode group with capacitance change; and
and calculating a second axis coordinate of the touch point in the second axis direction according to the capacitance changes of at least two of the first electrode block, the second electrode block and the third electrode block of the sensing electrode group.
14. The method as claimed in claim 13, wherein the step of calculating the second axis coordinate comprises:
judging whether the second electrode block and the third electrode block have capacitance change at the same time;
if the second electrode block and the third electrode block have capacitance changes at the same time, calculating the second axis coordinate according to the capacitance changes of the first electrode block, the second electrode block and the third electrode block; and
if the second electrode block and the third electrode block do not have capacitance changes at the same time, the second axis coordinate is calculated according to the capacitance changes of the first electrode block and the second electrode block or the capacitance changes of the first electrode block and the third electrode block.
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