TWM607634U - Electronic device with touch sensing function - Google Patents

Abstract

An electronic device with touch sensing function is provided, in which includes multiple touch sensing structures arranged along an X-axis. Each touch sensing structure includes a first electrode, a second electrode, and a third electrode. The first electrode includes an upper half electrode and a lower half electrode coupled with each other. The upper half electrode and the lower half electrode are extended toward each other along a Y-axis and are both substantially triangular, in which the X-axis are substantially perpendicular to the Y-axis. The second electrode is substantially triangular, in which a first side and a second side of the second electrode face to the upper half electrode and the lower half electrode, respectively. The third electrode is disposed between the lower half electrode and the first side of the second electrode, in which the third electrode is substantially strip-shaped.

Description

Electronic device with touch function

This disclosure relates to an electronic device with touch function, especially an in-cell touch electronic device.

The in-cell touch technology can fabricate the touch module inside the display, so that the overall device has the advantages of lightness and high brightness. The operating principle of the common in-cell touch display on the market is to perform self-capacitive touch sensing through multiple rectangular touch electrodes arranged in a matrix, and each touch electrode needs a separate trace to Transmit its sensing results to the touch chip. However, as the demand for touch resolution gradually increases, the number of channels of common touch chips is not enough to support this design method, and the touch electrodes are also prone to short-circuit due to a large number of dense wiring.

The present disclosure provides an electronic device with touch function, which includes a plurality of touch structures arranged along the X axis. Each touch structure includes a first electrode, a second electrode, and a third electrode. The first electrode includes an upper half electrode and a lower half electrode coupled to each other. The upper half electrode and the lower half electrode extend toward each other along the Y axis and are substantially triangular, and the X axis is substantially orthogonal to the Y axis. The second electrode is substantially triangular, and the first side and the second side of the second electrode face the lower half electrode and the upper half electrode, respectively. The third electrode is located between the lower half electrode and the first side of the second electrode, and the third electrode is substantially elongated.

One of the advantages of the above embodiments is that the number of traces required for the touch electrodes to receive and output signals is greatly reduced.

The embodiments of the present disclosure will be described below in conjunction with related drawings. In the drawings, the same reference numerals indicate the same or similar elements or method flows.

FIG. 1 is a simplified functional block diagram of the electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 has a self-capacitive touch function, and includes a control circuit 101, a plurality of wires 103, and a plurality of touch structures 10_1 to 10_n arranged along the X axis. The respective capacitance values of the touch structures 10_1 to 10_n will change according to the touch input, where the touch input can be the user approaching or approaching the electronic device 100 with a finger. The capacitance value variation of the touch structures 10_1~10_n is transmitted to the control circuit 101 through the wiring 103, and the control circuit 101 is used to calculate the position of the touch input on the X axis and the Y axis according to the received capacitance value variation. The X axis is substantially orthogonal to the Y axis.

In some embodiments, the electronic device 100 further includes a variety of elements for realizing display functions, such as one or more of a glass substrate, a backlight module, and a pixel circuit. For the sake of brevity, the connection relationship between these elements is not Shown in Figure 1. The touch structures 10_1~10_n are disposed in the active area AA of the electronic device 100 for providing display images, and partially extend outside the active area AA to be coupled to the control circuit 101 through the wiring 103, but this disclosure does not take this as limit. In some embodiments, the touch structures 10_1-10_n are completely disposed in the active area AA, and the wires 103 extend into the active area to be coupled to the touch structures 10_1-10_n.

In practice, the control circuit 101 can be implemented using a general touch chip, or can be implemented using a touch and display driver integration (TDDI) chip. The touch structures 10_1 to 10_n can be implemented by various suitable transparent conductive films, such as Indium Tin Oxide (ITO) film or Al-doped Zno (AZO).

As shown in FIG. 1, each of the touch structures 10_1 to 10_n has a first electrode 110, a second electrode 120, and a third electrode 130. The first electrode 110 includes a lower half electrode 112 and an upper half electrode 114 coupled to each other, wherein the lower half electrode 112 and the upper half electrode 114 extend toward each other along the Y axis, and both are substantially triangular. In some embodiments, the width of the lower half electrode 112 gradually narrows toward the upper half electrode 114, and the width of the upper half electrode 114 gradually narrows toward the lower half electrode 112. That is, the lower half electrode 112 and the upper half electrode 114 are coupled to each other in the electrical connection area 105 at their respective vertices. In other embodiments, the shapes of the lower half electrode 112 and the upper half electrode 114 are right triangles.

The second electrode 120 is substantially triangular with a first side 122, a second side 124, and a third side 126, and the first side 122 and the second side 124 of the second electrode 120 face the lower half of the electrode 112 and the upper half, respectively.部极114。 Section electrode 114. In some embodiments, the width of the second electrode 120 gradually narrows toward the electrical connection area 105, that is, one of the apexes of the second electrode 120 points to the electrical connection area 105. In other embodiments, the first electrode 110 and the second electrode 120 are arranged substantially to form a rectangle, that is, the first electrode 110 and the second electrode 120 have a shape that can fit each other, and the second electrode 120 The shape is an obtuse triangle.

As shown in FIG. 1, the first electrode 110 and the second electrode 120 are not in direct contact, there is a V-shaped gap between the two, and the third electrode 130 is disposed in the V-shaped gap. In some embodiments, the third electrode 130 is substantially elongated and located between the lower half electrode 112 and the first side 122 of the second electrode 120. In other embodiments, the length of the third electrode 130 projected to the Y axis is substantially equal to the length of the lower electrode 112 projected to the Y axis. Taking the touch structure 10_1 as an example, the third electrode 130 extends from the edge of the touch structure 10_1 on the X axis along the V-shaped gap toward the electrical connection area 105, and can enter but not exceed the electrical connection area 105 In the range, the third electrode 130 of the touch structure 10_2~10_n also has a similar arrangement, which will not be repeated here. In addition, the third electrode 130 is not in direct contact with the first electrode 110 and the second electrode 120 either.

In the embodiment of FIG. 1, adjacent two of the touch structures 10_1 to 10_n are respectively adjacent to each other with the first electrode 110 and the second electrode 120. For example, in the case of the touch structures 10_1 and 10_2, the lower half electrode 112 and the upper half electrode 114 of the touch structure 10_1 are adjacent to the third side 126 of the second electrode 120 of the touch structure 10_2 (for example , The longest side of the second electrode 120). For another example, in the case of the touch structures 10_2 and 10_3, the lower electrode 112 and the upper electrode 114 of the touch structure 10_2 are adjacent to the third side 126 of the second electrode 120 of the touch structure 10_3, The rest can be deduced by analogy. In order to make the drawing concise and easy to explain, the first electrode 110, the second electrode 120 and the third electrode 130 in Figure 1 are shown as each connected to only one trace 103, but the present disclosure is not limited to this. . In some embodiments, in order to increase reliability and reduce impedance, each of the first electrode 110, the second electrode 120 and the third electrode 130 may be connected to more than two traces 103.

Figure 2 is an enlarged schematic view of the area 107 in Figure 1. In some embodiments, the first electrode 110, the second electrode 120, and the third electrode 130 are used to provide voltages required for operation of the plurality of pixel circuits PX of the plurality of pixel circuits PX of the electronic device 100. Therefore, at least one edge of the first electrode 110, at least one edge of the second electrode 120, and at least one edge of the third electrode 130 are saw-toothed, so that their position projections correspond to the plurality of pixel circuits PX. The symbols R, G, and B in each pixel circuit PX block in Figure 2 respectively represent that the pixel circuit PX is used to emit red light, green light and blue light, but the color arrangement of the pixel circuit PX in the present disclosure And the combination is not limited to this.

In detail, on the plane where the X axis and the Y axis are located, at least one edge of the first electrode 110 includes a plurality of first protrusions 210, and at least one edge of the second electrode 120 includes a plurality of second protrusions 220, and At least one edge of the third electrode 130 includes a plurality of third protrusions 230. Each of the first protrusion 210, the second protrusion 220, and the third protrusion 230 overlaps the projection of the corresponding one or more pixel circuits PX in the Z-axis direction, where the Z-axis is substantially orthogonal to X axis and Y axis.

In addition, in some embodiments, the gap between the first electrode 110, the second electrode 120, and the third electrode 130 does not overlap with the projection of the pixel circuit PX in the Z-axis direction.

Figure 3 is a simplified schematic cross-sectional view taken along the line A-A' in Figure 2 in an embodiment. In this embodiment, the pixel circuit PX is a liquid crystal pixel circuit, and the electronic device 100 sequentially includes a first polarizing layer 302, a lower glass substrate 304, a transparent conductive film layer 306, an insulating layer 308, and a thin film transistor from bottom to top. The layer 310, the liquid crystal layer 312, a plurality of color filters 314r, 314g, and 314b, the upper glass substrate 316, the second polarizing layer 318, and the cover glass 320. The touch structures 10_2 to 10_n in Figure 1 may be disposed on the transparent conductive film layer 306 and used to provide a common voltage for each pixel circuit PX. In the liquid crystal display technology, the common voltage can be used to realize the polarity reversal drive and to stabilize the cross voltage of the liquid crystal capacitor. The function of the common voltage is well known to those with ordinary knowledge in the technical field. For the sake of brevity, it is not here. Go into details again.

Fig. 4 is a simplified cross-sectional view taken along the line A-A' in Fig. 2 in another embodiment. In this embodiment, the pixel circuit PX is an Organic Light-Emitting Diode (OLED) pixel circuit, and the electronic device 100 includes a lower substrate 402, a metal conductive layer 404, and a plurality of Two organic light emitting layers 406r, 406g, and 460b, a transparent conductive thin film layer 408, and an upper substrate 410. The touch structures 10_2 to 10_n in Figure 1 can be disposed on the transparent conductive film layer 408 and coupled to the cathodes of the organic light emitting layers 406r, 406g, and 460b. In some embodiments, the positions of the metal conductive layer 404 and the transparent conductive thin film layer 408 can be interchanged. At this time, the touch structures 10_2-10_n in Figure 1 are coupled to the anodes of the organic light-emitting layers 406r, 406g, and 460b.

FIG. 5 is a flowchart of a touch sensing method 500 according to an embodiment of the present disclosure. The electronic device 100 (or its control circuit 101) of FIG. 1 can be used to execute the touch sensing method 500 to calculate the precise position of the touch input on the electronic device 100. In the process S502, the control circuit 101 determines whether the capacitance value of the first electrode 110 and the second electrode 120 of one of the touch structures 10_2-10_n has changed. If yes, the control circuit 101 will then execute the process S504. If not, the control circuit 101 may end the execution of the touch sensing method 500, or may repeatedly execute the process S502. For the convenience of description, in the following, the capacitance value of the first electrode 110 and the second electrode 120 in the touch structures 10_2 to 10_n is abbreviated as the “target touch structure 10”.

In the process S504, the control circuit 101 determines the position of the target touch structure 10 on the X axis as the position of the touch input on the X axis. Next, in the process S506, the control circuit 101 determines whether the capacitance value of the third electrode 130 of the target touch structure 10 has changed. If yes, the control circuit 101 will then execute the procedures S508 to S510. If not, the control circuit 101 will then execute the procedures S512 to S514.

Please refer to FIG. 5 and FIG. 6A at the same time. In the process S508, since the capacitance value of the third electrode 130 changes, the control circuit 101 will determine that the position of the touch input (for example, the user's finger 610) corresponds to the lower half部极112。 Section electrode 112. In the process S510, in the case where it is determined that the position of the touch input corresponds to the lower electrode 112, the control circuit 101 will determine the difference between the change in the capacitance of the first electrode 110 and the change in the capacitance of the second electrode 120. The relationship further determines the precise position of the touch input on the Y axis.

For example, as shown in FIG. 6A, since the capacitance value change of the first electrode 110 is smaller than the capacitance value change of the second electrode 120, and the capacitance value of the third electrode 130 has changed, the control circuit 101 can know that the touch The input corresponds to a smaller area of the first electrode 110, and a larger area corresponding to the second electrode 120, and its position corresponds to the lower half electrode 112. Therefore, the control circuit 101 determines that the position of the touch input is lower than the middle of the target touch structure 10.

Similarly, please refer to FIG. 5 and FIG. 6B at the same time. In the process S512, since the capacitance value of the third electrode 130 has not changed, the control circuit 101 will determine the position of the touch input (for example, the user's finger 610) Corresponds to the upper half electrode 114. In the process S514, when it is determined that the position of the touch input corresponds to the upper electrode 114, the control circuit 101 will determine the difference between the change in the capacitance of the first electrode 110 and the change in the capacitance of the second electrode 120. The relationship further determines the precise position of the touch input on the Y axis.

For example, as shown in FIG. 6B, since the capacitance value change of the first electrode 110 is smaller than the capacitance value change of the second electrode 120, and the capacitance value of the third electrode 130 does not change, the control circuit 101 can know that the touch The input corresponds to a smaller area of the first electrode 110, and a larger area corresponding to the second electrode 120, and its position corresponds to the upper electrode 114. Therefore, the control circuit 101 determines that the position of the touch input is above the middle of the target touch structure 10.

The control circuit 101 executes the process S516 after the process S510 or S514 ends to output the precise position of the touch input on the X-axis and the Y-axis (that is, on the electronic device 100). After the process S516 ends, the control circuit 101 may end the execution of the touch sensing method 500, or execute the aforementioned process S502 again.

It can be seen from the above that, compared to the traditional touch structure formed by only two triangular electrodes, the third electrode 130 in the above embodiments enables the control circuit 101 to know in advance that the touch input is located in the target touch structure 10. The upper or lower half reduces the calculation area of the control circuit 101 to nearly half. Therefore, the electronic device 100 can achieve more than twice the accuracy of the traditional touch device with the same resolution analog-to-digital converter (ADC).

FIG. 7 is a simplified functional block diagram of the electronic device 700 according to an embodiment of the present disclosure. The electronic device 700 is similar to the electronic device 100. The difference is that the arrangement of the touch structures 10_2-10_n in the electronic device 700 is different from that of the electronic device 100. In detail, in the electronic device 700, two adjacent ones of the touch structures 10_1 to 10_n are adjacent to each other by the first electrode 110, or adjacent to each other by the second electrode 120. For example, the third sides 126 of the second electrodes 120 of the touch structures 10_1 and 10_2 are adjacent to each other. For another example, the first electrodes 110 of the touch structures 10_2 and 10_3 are adjacent to each other.

The remaining connection modes, components, implementations, and advantages of the aforementioned electronic device 100 are all applicable to the electronic device 700, and for the sake of brevity, the details are not repeated here. In addition, the electronic device 700 can also be used to execute the touch sensing method 500.

FIG. 8 is a simplified functional block diagram of the electronic device 800 according to an embodiment of the present disclosure. The electronic device 800 has a self-capacitive touch function, and includes a control circuit 101, a plurality of wires 103, and a plurality of touch structures 80_1 to 80_n arranged along the X axis. Each of the touch structures 80_1 to 80_n includes a first electrode 810, a second electrode 820, a third electrode 830, a fourth electrode 840, and a fifth electrode 850. The first electrode 810 includes a lower half electrode 812 and an upper half electrode 814 coupled to each other, wherein the lower half electrode 812 and the upper half electrode 814 extend toward each other along the Y axis, and both are substantially triangular. In some embodiments, the width of the lower half electrode 812 gradually narrows toward the upper half electrode 814, and the width of the upper half electrode 814 gradually narrows toward the lower half electrode 812. That is, the lower half electrode 812 and the upper half electrode 814 are coupled to each other in the electrical connection area 805 at their respective vertices. In other embodiments, the shape of the lower half electrode 112 and the upper half electrode 114 is an acute triangle.

The second electrode 820 is substantially triangular with a first side 822, a second side 824, and a third side 826, and the first side 822 and the second side 824 of the second electrode 820 face the lower half of the electrode 812 and the upper half, respectively.部electrodes 814. In some embodiments, the width of the second electrode 820 gradually narrows toward the electrical connection area 805, that is, one of the apexes of the second electrode 820 points to the electrical connection area 805.

As shown in Figure 8, the first electrode 810 and the second electrode 820 are not in direct contact, there is a V-shaped gap between the two, and the third electrode 830 is disposed between the first electrode 810 and the second electrode 820. In the V-shaped gap. In some embodiments, the third electrode 830 is substantially elongated and located between the lower half electrode 812 and the first side 822 of the second electrode 820. In other embodiments, the length of the third electrode 830 projected to the Y axis is substantially equal to the length of the lower electrode 812 projected to the Y axis. Taking the touch structure 80_1 as an example, the third electrode 830 extends from the edge of the touch structure 80_1 on the X axis along the V-shaped gap between the first electrode 810 and the second electrode 820 toward the electrical connection area 805 , Which can enter but does not exceed the range of the electrical connection area 805, and the third electrode 830 of the touch structure 80_2~80_n also has a similar arrangement, which will not be repeated here. In addition, the third electrode 830 is not in direct contact with the first electrode 810 and the second electrode 820 either.

The fourth electrode 840 is substantially triangular with a first side 842, a second side 844, and a third side 846, and the first side 842 and the second side 844 of the fourth electrode 840 face the lower half of the electrode 812 and the upper half, respectively.部electrodes 814. In some embodiments, the width of the fourth electrode 840 gradually narrows toward the electrical connection area 805, that is, one of the apexes of the fourth electrode 840 points to the electrical connection area 805. In this embodiment, the first electrode 810 is located between the second electrode 820 and the fourth electrode 840. In some embodiments, the first electrode 810, the second electrode 820, and the fourth electrode 840 are arranged to form a rectangle, that is, the second electrode 820 and the fourth electrode 840 are axisymmetric with the first electrode 810 as the center of symmetry. arrangement. In other embodiments, the second electrode 820 and the fourth electrode 840 are obtuse triangles.

As shown in Figure 8, the first electrode 810 and the fourth electrode 840 are not in direct contact, there is a V-shaped gap between the two, and the fifth electrode 850 is disposed between the first electrode 810 and the fourth electrode 840. In the V-shaped gap. In some embodiments, the fifth electrode 850 is substantially elongated, and is located between the lower half electrode 812 and the first side of the fourth electrode 840. In other embodiments, the length of the fifth electrode 850 projected to the Y axis is substantially equal to the length of the lower electrode 812 projected to the Y axis. Taking the touch structure 80_1 as an example, the fifth electrode 850 extends from the edge of the touch structure 80_1 on the X axis along the V-shaped gap between the first electrode 810 and the fourth electrode 840 toward the electrical connection area 805 , Which can enter but does not exceed the range of the electrical connection area 805, the fifth electrode 850 of the touch structure 80_2~80_n also has a similar arrangement, which will not be repeated here. In addition, the fifth electrode 850 is not in direct contact with the first electrode 810 and the fourth electrode 840 either.

In the embodiment of FIG. 8, the second electrode 820 and the fourth electrode 840 are adjacent to each other in two adjacent touch structures 80_2 to 80_n, respectively. For example, in the case of the touch structures 80_1 and 80_2, the third side 846 of the fourth electrode 840 of the touch structure 80_1 is adjacent to the third side 826 of the second electrode 820 of the touch structure 80_2. For another example, in the case of the touch structures 80_2 and 80_3, the third side 846 of the fourth electrode 840 of the touch structure 80_2 is adjacent to the third side 826 of the second electrode 820 of the touch structure 80_3, and the rest depends on And so on.

To make the drawing concise and easy to explain, the first electrode 810, the second electrode 820, the third electrode 830, the fourth electrode 840, and the fifth electrode 850 in Figure 8 are shown as each connected to only one trace 103 , But this disclosure document is not limited to this. In some embodiments, in order to increase reliability and reduce impedance, each of the first electrode 810, the second electrode 820, the third electrode 830, the fourth electrode 840, and the fifth electrode 850 may be connected to more than two traces 103.

The remaining connection modes, components, implementations, and advantages of the aforementioned electronic device 100 are all applicable to the electronic device 800, and for the sake of brevity, the details are not repeated here. For example, each of the first electrode 810, the second electrode 820, the third electrode 830, the fourth electrode 840, and the fifth electrode 850 may have at least one jagged edge to project a plurality of pixel circuits PX in the corresponding display device 800. , And supply the operating voltage required by these pixel circuits PX. For example, when the pixel circuit PX is a liquid crystal pixel circuit, the first electrode 810 to the fifth electrode 850 are used to supply a common voltage. For another example, when the pixel circuit PX is an organic light emitting diode pixel circuit, the first electrode 810 to the fifth electrode 850 are used to supply the system high voltage (VDD) or the system low voltage (VSS). That is, at least one edge of the first electrode 810, the second electrode 820, the third electrode 830, the fourth electrode 840, and the fifth electrode 850 includes a plurality of protrusions, and each of these protrusions overlaps one or more The projection of a corresponding pixel circuit PX in the Z-axis direction. In addition, in some embodiments, the gaps between the first electrode 810, the second electrode 820, the third electrode 830, the fourth electrode 840, and the fifth electrode 850 do not overlap with the pixel circuit PX in the Z-axis direction. projection.

FIG. 9 is a flowchart of a touch sensing method 900 according to an embodiment of the present disclosure. The electronic device 800 (or its control circuit 101) can be used to execute the touch sensing method 900 to calculate the precise position of the touch input on the electronic device 800. In the process S902, the control circuit 101 determines whether the capacitance value of the first electrode 810 and the second electrode 820 of one of the touch structures 80_2 to 80_n has changed. If not, the control circuit 101 will then execute the process S904. If yes, the control circuit 101 will execute the process S906.

In the process S904, the control circuit 101 determines whether the capacitance value of the first electrode 810 and the fourth electrode 840 of one of the touch structures 80_2 to 80_n has changed. If yes, the control circuit 101 will execute the process S906. If not, the control circuit 101 can end the execution of the touch sensing method 900, or can execute the process S902 again. For the convenience of description, the capacitance value of the first electrode 810 and the second electrode 820 in the touch structure 80_2~80_n, or the capacitance value of the first electrode 810 and the fourth electrode 840, will be referred to as “target”. Touch structure 80".

In the process S906, the control circuit 101 determines the position of the target touch structure 80 on the X axis as the position of the touch input on the X axis. Next, in the process S908, the control circuit 101 determines whether the capacitance value of the third electrode 830 or the fifth electrode 850 of the target touch structure 80 has changed. If yes, the control circuit 101 will then execute the procedures S910 to S912. If not, the control circuit 101 will then execute the procedures S914 to S916.

In the process S910, because the capacitance value of the third electrode 830 or the fifth electrode 850 changes, the control circuit 101 determines that the position of the touch input corresponds to the lower half electrode 812. In the process S912, in the case where it is determined that the position of the touch input corresponds to the lower electrode 812, the control circuit 101 will determine the difference between the change in the capacitance of the first electrode 810 and the change in the capacitance of the second electrode 820. The relationship or the relationship between the capacitance value change of the first electrode 810 and the capacitance value change of the fourth electrode 840 is used to further determine the precise position of the touch input on the Y axis. The detailed judgment principle is similar to the content described above in conjunction with Fig. 6A. For the sake of brevity, the details are not repeated here.

Similarly, in the process S914, since the capacitance value of the third electrode 830 or the fifth electrode 850 has not changed, the control circuit 101 will determine that the position of the touch input corresponds to the upper electrode 814. In the process S916, when it is determined that the position of the touch input corresponds to the upper electrode 814, the control circuit 101 will determine the difference between the change in the capacitance of the first electrode 110 and the change in the capacitance of the second electrode 120. The relationship, or the relationship between the capacitance value change of the first electrode 810 and the capacitance value change of the fourth electrode 840 to further determine the precise position of the touch input on the Y axis. The detailed judgment principle is similar to the content described above in conjunction with Figure 6B. For the sake of brevity, the details are not repeated here.

The control circuit 101 executes the process S918 after the process S912 or S916 ends to output the precise position of the touch input on the X axis and the Y axis (ie, on the electronic device 800). After the process S918 ends, the control circuit 101 may end the execution of the touch sensing method 900, or execute the aforementioned process S902 again.

It can be seen from the above that, compared to the traditional touch structure formed by only two triangular electrodes, the third electrode 830 and the fifth electrode 850 in the above embodiments enable the control circuit 101 to know in advance that the touch input is located at the target The upper or lower half of the touch structure 80 reduces the calculation area of the control circuit 101 to nearly half. Therefore, the electronic device 800 can achieve more than twice the accuracy of a traditional touch device with the same resolution analog-to-digital converter (ADC).

In addition, it can be seen from the various embodiments of the present disclosure that, compared to the traditional in-cell touch display with a plurality of rectangular touch electrodes arranged in a matrix, the electronic devices 100, 700, and 800 greatly reduce the number of touch electrodes to control. The number of traces 103 of the circuit 101 thus helps simplify the design of the touch chip, and helps reduce the risk of short circuits between touch electrodes and improve product reliability.

In addition, the touch electrodes of the electronic devices 100, 700, and 800 do not need to be coupled to the wiring 103 through a via hole, which helps simplify the manufacturing process and improve the production yield.

In some embodiments, the electronic devices 100, 700, and 800 can be smart phones, tablet computers, or notebook computers, and can also be in-cell touch display panels provided in the aforementioned devices.

In the specification and the scope of the patent application, certain words are used to refer to specific elements. However, a person with ordinary knowledge in the relevant technical field should understand that the same element may be called by different terms. The specification and the scope of patent application do not use differences in names as a way to distinguish components, but use differences in functions of components as a basis for distinction. The "including" mentioned in the specification and the scope of the patent application is an open term, so it should be interpreted as "including but not limited to". In addition, "coupling" here includes any direct and indirect connection means. Therefore, if it is described in the text that the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection, wireless transmission, optical transmission, or other signal connection methods, or through other elements or connections. The means is indirectly connected to the second element electrically or signally.

The size and relative size of some elements in the illustration will be enlarged, or the shape of some elements will be simplified, so as to more clearly express the content of the embodiment. Therefore, unless otherwise specified by the applicant, the shape, size, relative size, and relative position of each element in the figure are only for convenience of description, and should not be used to limit the patent scope of this disclosure. In addition, the present disclosure can be embodied in many different forms, and when interpreting the present disclosure, it should not be limited to the embodiments presented in this specification.

In addition, unless otherwise specified in the specification, any term in the singular case also includes the meaning of the plural case.

The above are only preferred embodiments of the present disclosure, and all equal changes and modifications made in accordance with the requirements of the present disclosure should fall within the scope of the disclosure.

10_1~10_n: Touch structure 100,700: electronic devices 101: control circuit 103: routing 105: electrical connection area 107: area 110: first electrode 112: Lower electrode 114: Upper electrode 120: second electrode 122: The first side of the second electrode 124: The second side of the second electrode 126: The third side of the second electrode 130: third electrode X, Y, Z: axis AA: active area A-A’: Sectional line PX: pixel circuit 210: The first protrusion 220: second protrusion 230: third protrusion 302: first polarizing layer 304: lower glass substrate 306: Transparent conductive film layer 308: Insulation layer 310: Thin film transistor layer 312: liquid crystal layer 314r, 314g, 314b: color filter 316: upper glass substrate 318: second polarizing layer 320: glass protective layer 402: lower glass substrate 404: Metal conductive layer 406r, 406g, 406b: organic light emitting layer 408: Transparent conductive film layer 410: upper glass substrate 500, 900: Touch sensing method S502~S516, S902~S918: Process 10, 80: Target touch structure 610: finger 800: electronic device 80_1~80_n: touch structure 805: electrical connection area 810: first electrode 812: Lower electrode 814: Upper electrode 820: second electrode 822: The first side of the second electrode 824: The second side of the second electrode 826: The third side of the second electrode 830: third electrode 840: fourth electrode 842: The first side of the fourth electrode 844: The second side of the fourth electrode 846: The third side of the fourth electrode 850: Fifth electrode

FIG. 1 is a simplified functional block diagram of an electronic device according to an embodiment of the present disclosure. Fig. 2 is a partially enlarged schematic diagram of the electronic device of Fig. 1. Figure 3 is a simplified schematic cross-sectional view taken along the line A-A' in Figure 2 in an embodiment. Fig. 4 is a simplified cross-sectional view taken along the line A-A' in Fig. 2 in another embodiment. FIG. 5 is a flowchart of a touch sensing method according to an embodiment of the present disclosure. FIG. 6A is a schematic diagram of capacitance changes in different parts of the touch structure due to touch input. FIG. 6B is another schematic diagram of capacitance changes in different parts of the touch structure due to touch input. FIG. 7 is a simplified functional block diagram of the electronic device according to an embodiment of the present disclosure. FIG. 8 is a simplified functional block diagram of the electronic device according to an embodiment of the present disclosure. FIG. 9 is a flowchart of a touch sensing method according to an embodiment of the present disclosure.

10_1~10_n: Touch structure

100: electronic device

101: control circuit

103: routing

105: electrical connection area

107: area

110: first electrode

112: Lower electrode

114: Upper electrode

120: second electrode

122: The first side of the second electrode

124: The second side of the second electrode

126: The third side of the second electrode

130: third electrode

X, Y, Z: axis

AA: cut line

Claims (19)

An electronic device with touch function includes a plurality of touch structures arranged along an X axis, wherein each touch structure includes: A first electrode includes an upper half electrode and a lower half electrode coupled to each other, wherein the upper half electrode and the lower half electrode extend toward each other along a Y axis and are substantially triangular, and the The X axis is substantially orthogonal to the Y axis; A second electrode, wherein the second electrode is substantially triangular, and a first side and a second side of the second electrode face the lower half electrode and the upper half electrode, respectively; and A third electrode is located between the lower half electrode and the first side of the second electrode, wherein the third electrode is substantially elongated. The electronic device according to claim 1, wherein the length of the third electrode projected on the Y axis is substantially equal to the length of the lower electrode projected on the Y axis. The electronic device according to claim 1, wherein the upper half electrode gradually narrows in a direction toward the lower half electrode, and the lower half electrode gradually narrows in a direction toward the upper half electrode. The electronic device according to claim 1, wherein the second electrode gradually narrows in a direction toward an electrical connection area between the upper electrode and the lower electrode. The electronic device according to claim 1, wherein the second electrode and the first electrode are substantially arranged to form a rectangle. The electronic device according to claim 1, wherein in a first touch structure and a second touch structure adjacent to the plurality of touch structures, the upper half electrode of the first touch structure The lower half electrode is adjacent to a third side of the second electrode of the second touch structure. The electronic device according to claim 1, wherein in a first touch structure and a second touch structure adjacent to the plurality of touch structures, the second electrode of the first touch structure is A third side is adjacent to a third side of the second electrode of the second touch structure. The electronic device according to claim 7, wherein, in the second touch structure and a third touch structure that are adjacent to each other among the plurality of touch structures, the first electrode of the second touch structure and The first electrodes of the third touch structure are adjacent to each other. The electronic device according to claim 1, wherein if a touch input changes the capacitance values of the first electrode, the second electrode, and the third electrode, the electronic device determines that a position of the touch input corresponds to For the lower half electrode, if the touch input changes the capacitance value of the first electrode and the second electrode and does not change the capacitance value of the third electrode, the electronic device determines that the position of the touch input corresponds to the The upper electrode. The electronic device according to claim 1, further comprising a plurality of pixel circuits, wherein at least one edge of the first electrode, at least one edge of the second electrode, and at least one edge of the third electrode are saw-toothed, to The projection of the first electrode, the second electrode, and the third electrode corresponds to a corresponding number of the pixel circuits. The electronic device according to claim 10, wherein the at least one edge of the first electrode includes a plurality of first protrusions, the at least one edge of the second electrode includes a plurality of second protrusions, and the third electrode The at least one edge includes a plurality of third protrusions, Each of the plurality of first protrusions, the plurality of second protrusions, and the plurality of third protrusions overlaps the projection of the corresponding one or more of the plurality of pixel circuits in a Z-axis direction , Wherein the Z axis is substantially orthogonal to the X axis and the Y axis. The electronic device according to claim 10, wherein if the plurality of pixel circuits are liquid crystal pixel circuits, the first electrode, the second electrode and the third electrode are used to provide a common voltage to the plurality of pixels The corresponding one in the circuit, If the plurality of pixel circuits are organic light emitting diode pixel circuits, the first electrode, the second electrode, and the third electrode are coupled to the corresponding ones of the plurality of organic light emitting diode circuits. Multiple cathodes or multiple anodes of light-emitting diodes. The electronic device according to claim 1, wherein each touch structure further includes: A fourth electrode, wherein the fourth electrode is substantially triangular, a first side and a second side of the fourth electrode face the lower half electrode and the upper half electrode, and the first electrode is located at the Between the second electrode and the fourth electrode; and A fifth electrode is located between the lower half electrode and the first side of the fourth electrode, wherein the fifth electrode is substantially elongated. The electronic device according to claim 13, wherein the first electrode, the second electrode, and the fourth electrode are substantially arranged to form a rectangle. The electronic device according to claim 13, wherein the fourth electrode gradually narrows toward an electrical connection area between the upper electrode and the lower electrode. The electronic device according to claim 13, wherein in a first touch structure and a second touch structure adjacent to the plurality of touch structures, the fourth electrode of the first touch structure is A third side is adjacent to a third side of the second electrode of the second touch structure. The electronic device according to claim 13, wherein if a touch input changes the capacitance values of the first electrode, the fourth electrode, and the fifth electrode, the electronic device determines that the touch input is on the Y axis A position corresponding to the lower half of the electrode, if the touch input changes the capacitance value of the first electrode and the fourth electrode and does not change the capacitance value of the fifth electrode, the electronic device determines that the touch input is The position of the Y axis corresponds to the upper half electrode. The electronic device according to claim 13, further comprising a plurality of pixel circuits, wherein at least one edge of the first electrode, at least one edge of the second electrode, at least one edge of the third electrode, and the fourth electrode At least one edge of the fifth electrode and at least one edge of the fifth electrode are zigzag, so that the projections of the first electrode, the second electrode, the third electrode, the fourth electrode, and the fifth electrode correspond to the plurality of pictures There are many correspondences in the elementary circuit. The electronic device according to claim 18, wherein the at least one edge of the first electrode includes a plurality of first protrusions, the at least one edge of the second electrode includes a plurality of second protrusions, and the third electrode The at least one edge of the fourth electrode includes a plurality of third protrusions, the at least one edge of the fourth electrode includes a plurality of fourth protrusions, and the at least one edge of the fifth electrode includes a plurality of fifth protrusions, Each of the plurality of first protrusions, the plurality of second protrusions, the plurality of third protrusions, the plurality of fourth protrusions, and the plurality of fifth protrusions overlaps the plurality of pixels The projection of one or more of the circuits in a Z-axis direction, wherein the Z-axis is substantially orthogonal to the X-axis and the Y-axis.

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