CN105021913B - Detection method of touch display panel - Google Patents

Abstract

A detection method for a touch display panel is used to detect the capacitance characteristics of a conductor in contact with a touch display panel. The touch display panel includes a plurality of telecommunication lines, which are composed of a plurality of data lines and a plurality of drive lines. There is at least one first capacitance component between the data lines and the grounding terminal, at least one second capacitance component between the drive lines and the grounding terminal, and at least one capacitor between the data lines and the drive lines. The detection method includes selecting one of the telecommunication lines as a detection line for detecting capacitance characteristics; then inputting a detection voltage waveform to the detection line, and inputting the same detection voltage waveform to the telecommunication lines crossing the detection line to eliminate the capacitance characteristics of the capacitor; and finally detecting the capacitance characteristics between the detection line and the grounding terminal.

Description

Detection method of touch display panel

technical field

The present invention relates to a detection method of a touch display panel, in particular to a detection method of a touch display panel which utilizes inputting the same detection voltage waveform to eliminate capacitance characteristics.

Background technique

With the rapid development of technology, Super Twisted Nematic Liquid Crystal Display (STN LCD) and Thin Film Transistor Liquid Crystal Display (TFT LCD) have gradually replaced traditional displays and are widely used in flat panel displays, mobile phones, tablet computers, notebook computers, personal digital assistants ( In various electronic products such as Personal Digital Assistant (PDA), due to the high development of technology, touchable display panels are widely used in the above-mentioned electronic devices.

Among them, the touch sensitivity of the touch display panel is a very important indicator for the above-mentioned electronic products, and the basis for detecting the parameters of the touch display panel is more important based on the capacitance characteristics, specifically, the detection of a conductive The capacitive characteristics of the body contacting a touch display panel, and the conventional touch display panel is provided with a plurality of data lines and a plurality of drive lines crossing the data lines, and the data lines are connected to the ground terminal, the drive lines Lines and ground terminals, these data lines and these drive lines usually have equivalent capacitance (such as coupling capacitance, parasitic capacitance, or capacitance formed by other functional circuits, etc., one or more of them have equivalent capacitance. value of capacitance), and therefore in practice, when detecting the capacitance characteristics of one of the data lines or one of the driving lines to the ground terminal, it will be affected by the capacitance characteristics of other equivalent capacitances. The detection result is inaccurate, so that the existing detection method still needs to be improved.

Contents of the invention

In view of the fact that in the existing process of detecting the capacitive characteristics of the touch display panel, it is generally affected by the capacitive characteristics of other equivalent capacitors, which makes the detection results inaccurate. Therefore, the present invention mainly provides a detection method of a touch display panel, which mainly eliminates unnecessary capacitance characteristics by inputting the same detection voltage waveform, so as to obtain the capacitance characteristics to be detected.

Based on the above purpose, the main technical means adopted by the present invention is to provide a detection method of a touch display panel, which is used to detect the capacitance characteristics of a conductive body contacting a touch display panel, and the touch display panel is electrically connected to a touch display panel. The driving circuit includes a plurality of telecommunication lines, the telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged in a first direction on the touch display panel, and the driving lines are arranged in a The second direction crosses the data lines and is arranged on the touch display panel. There is at least one first capacitance component between the data lines and at least one ground terminal, and at least one second capacitance between the drive lines and the ground terminal. The component has at least one first capacitance between the data lines and the driving lines, and the detection method of the touch display panel includes (a) selecting one of the telecommunication lines as a detection line for detecting capacitance characteristics (b) inputting a detection voltage waveform to the detection line, and inputting a detection voltage waveform to the telecommunication lines crossing the detection line, thereby eliminating the capacitance characteristic of the first capacitor; and (c) detecting the connection between the detection line and the ground terminal capacitive properties.

Among them, in the preferred embodiment of the subsidiary technical means of the detection method of the touch display panel, the drive lines cross the data lines in the second direction and are arranged on the touch display panel with a plurality of intersection nodes. When there is at least one second capacitor between the line and the cross nodes, the step (b) further includes a step (b0) of inputting a detection voltage waveform to the cross nodes, so as to eliminate the capacitance characteristic of the second capacitor.

Among them, the main technical means adopted by the present invention also provides a detection method of a touch display panel, which is used to detect the capacitance characteristics of a conductive body contacting a touch display panel, and the touch display panel is electrically connected to a driving circuit , and includes a plurality of telecommunication lines, the telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged in the touch display panel in a first direction, and the driving lines are arranged in a second direction The direction crosses the data lines and is arranged on the touch display panel. There is at least one first capacitive component between the data lines and at least one ground terminal, and at least one second capacitive component between the drive lines and the ground terminal. There is at least one first capacitance between the data lines and the driving lines, at least one second capacitance between the data lines, and the detection method of the touch display panel includes (a) in the data lines of the telecommunication lines , select one as the detection line for detecting capacitance characteristics; (b) input a detection voltage waveform to the detection line, and input detecting the voltage waveform, so as to eliminate the capacitance characteristics of the first capacitor and the second capacitor; and (c) detecting the capacitance characteristic between the detection line and the ground terminal.

Among them, the main technical means adopted by the present invention also provides a detection method of a touch display panel, which is used to detect the capacitance characteristics of a conductive body contacting a touch display panel. The touch display panel is electrically connected to a drive circuit, and includes a plurality of telecommunication lines, the telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged on the touch display panel in a first direction, and the driving lines are arranged in a first direction The two directions intersect the data lines and arrange on the touch display panel, there is at least one first capacitive component between the data lines and at least one ground terminal, and at least one second capacitive component between the drive lines and the ground terminal, There is at least one first capacitance between these data lines and these driving lines, and there is at least one second capacitance between these driving lines. The detection method of the touch display panel includes: (a) the driving of these telecommunication lines Among the lines, select one as the detection line used to detect the capacitance characteristics; (b) input a detection voltage waveform to the detection line, and apply the data to the driving lines adjacent to the detection line and the data crossing the detection line The line input detects the voltage waveform, so as to eliminate the capacitance characteristics of the first capacitor and the second capacitor; and (c) detect the capacitance characteristic between the detection line and the ground terminal.

In addition, in a preferred embodiment of the subsidiary technical means of the detection method of the touch display panel, the driving circuit is at least one of a data line driver circuit, a driving line driver circuit, and a capacitive touch sensor circuit.

With the main technical means of the detection method of the touch display panel adopted in the present invention, since unnecessary capacitance characteristics can be eliminated, the correct capacitance characteristics can be detected and the inductive characteristics of the data lines or drive lines can be confirmed, and Accurate detection results can be obtained only by inputting the same voltage waveform, so the method of the present invention is simple and has high practicality.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 shows a first schematic diagram of a touch display panel according to a first preferred embodiment of the present invention;

FIG. 1A shows a second schematic diagram of a touch display panel according to a first preferred embodiment of the present invention;

2 shows a schematic flow chart of a detection method for a touch display panel according to a first preferred embodiment of the present invention;

FIG. 3 shows a schematic diagram of a touch display panel according to a second preferred embodiment of the present invention;

FIG. 4 is a schematic flowchart of a detection method for a touch display panel according to a second preferred embodiment of the present invention;

FIG. 5 shows a schematic diagram of a touch display panel according to a third preferred embodiment of the present invention;

6 is a schematic flowchart of a detection method for a touch display panel according to a third preferred embodiment of the present invention;

FIG. 7 shows a schematic diagram of a touch display panel according to a fourth preferred embodiment of the present invention; and

FIG. 8 is a schematic flowchart of a detection method for a touch display panel according to a fourth preferred embodiment of the present invention.

Among them, reference signs

1 Touch Display Panel

11 Telecom lines

111, 111a, 111b data lines

112, 112a, 112b drive wire

2 drive circuit

3, 3a, 3b, 3c, 3d, 3e Ground terminal

4, 4a, 4b The first capacitor component

4c, 4d, 4e Second capacitor assembly

5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h First capacitor

6, 6a Second capacitor

7. 7a The third capacitor

8, 8a fourth capacitor

100 Detection voltage waveform

A, B, C, D, E, F, G, H, I intersection nodes

detailed description

Since the detection method of the touch display panel provided by the present invention has too many combinations and implementations, it is not repeated here, and only four preferred embodiments are listed for specific description.

Please refer to FIG. 1 and FIG. 1A together. FIG. 1 shows a first schematic diagram of a touch display panel according to a first preferred embodiment of the present invention, and FIG. 1A shows a second schematic diagram of a touch display panel according to a first preferred embodiment of the present invention. schematic diagram. As shown in the figure, the detection method of the touch display panel provided by the present invention is applied to a touch display panel 1, and the touch display panel 1 is mainly a super twisted nematic liquid crystal display (STN LCD) panel. In addition, the touch display panel 1 is electrically connected to a driving circuit 2, and includes a plurality of telecommunication lines 11 (only one is marked in the figure), and these telecommunication lines 11 are composed of a plurality of data lines 111, 111a, 111b and a plurality of Composed of driving lines 112, 112a, 112b, these data lines 111, 111a, 111b are arranged in a first direction D1 (X direction in the figure) on the touch display panel 1, these driving lines 112, 112a, 112b are A second direction D2 (Y direction in the figure) crosses the data lines 111 , 111 a , 111 b and is arranged on the touch display panel 1 .

These data lines 111, 111a, 111b and a plurality of ground terminals 3, 3a, 3b respectively have a first capacitive component 4, 4a, 4b (in other embodiments, there may be more than one), these drive lines 112, 112a , 112b and the ground terminals 3c, 3d, 3e respectively have a second capacitive component 4c, 4d, 4e (in other embodiments, there may be multiple), these data lines 111, 111a, 111b and these drive lines 112, Between 112a and 112b are respectively at least one first capacitor 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h.

Specifically, the above-mentioned data lines 111, 111a, 111b and drive lines 112, 112a, 112b are all existing technologies (the difference is only in the name), and other touch display panels have telecommunication lines that can transmit data and power All do not depart from the category of the present invention.

The data lines 111, 111a, 111b and the driving lines 112, 112a, 112b are electrically connected to the driving circuit 2, and the driving circuit 2 is at least one of the data line driver circuit, the driving line driver circuit and the capacitive touch sensor circuit. One, for example, if the driving circuit 2 is a data line driver circuit and a driving line driver circuit, the data lines 111, 111a, 111b and the driving lines 112, 112a, 112b are electrically connected to the data line driver circuit and the driving line respectively Driver circuit: If the driving circuit 2 is a capacitive touch sensor circuit, the data lines 111 , 111 a , 111 b and the driving lines 112 , 112 a , 112 b are electrically connected to the capacitive touch sensor circuit.

In addition, the above-mentioned grounding terminal 3-3e can be a relative grounding point or an absolute grounding point in the touch display panel 1 and the driving circuit 2, and the grounding terminal 3-3e can be grounded at the same end or grounded at different ends, depending on the actual application It depends on the circuit design.

In addition, what needs to be mentioned here is that the first capacitive components 4, 4a, 4b defined in the preferred embodiment of the present invention refer to the data line 111, 111a, 111b to the driving circuit 2 (other embodiments can be touch 1) The equivalent capacitance of the ground point of the display panel. For example, the data lines 111, 111a, and 111b are respectively electrically connected in the path between the driving circuits 2, and there may be grounding capacitance, parasitic capacitance, coupling capacitance or other functional circuits. The capacitance of the formed capacitance, etc., and the capacitance formed by one or more of the above can be equivalent to a capacitance value, and the equivalent capacitance corresponding to the equivalent capacitance value is the first capacitance component defined in the present invention 4, 4a, 4b are hereby described, and the definitions of the second capacitive components 4c, 4d, 4e are the same as those of the first capacitive components 4, 4a, 4b, so they are not repeated here.

In addition, in a preferred embodiment of the present invention, the first capacitance 5-5h refers to the equivalent capacitance between the coupling capacitance and the parasitic capacitance between the data lines 111, 111a, 111b and the driving lines 112, 112a, 112b, that is, Between each data line 111, 111a, 111b and each drive line 112, 112a, 112b crossed (there is a first capacitor 5 between the data line 111 and the drive line 112, and there is a first capacitor between the data line 111a and the drive line 112 5a, and so on) There may be multiple coupling capacitors and parasitic capacitors, so the equivalent capacitors corresponding to the equivalent capacitor values are respectively the first capacitors 5-5h.

In order for those skilled in the art to understand the technical content of the present invention more easily, please refer to FIG. 1A and FIG. 2 together. FIG. 2 shows a schematic flowchart of a detection method for a touch display panel according to a first preferred embodiment of the present invention. As shown in the figure, the detection method of the touch display panel provided by the present invention is used to detect the capacitance characteristics of a conductor (not shown) in contact with the touch display panel 1. The above-mentioned conductor is, for example, a stylus or It is the finger of the human body, and the capacitance characteristics are, for example, the time for charging and discharging the capacitance that can be presented in a waveform diagram, and the amount of stored charge (the same is true for the capacitance characteristics mentioned below), the touch display panel of the first preferred embodiment of the present invention The detection method includes the following steps:

Step S101: Select one of the telecommunication lines as a detection line for detecting capacitance characteristics; and

Step S102: Input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the telecommunication lines crossing the detection line, so as to eliminate the capacitance characteristic of the first capacitor, and detect the capacitance between the detection line and the ground terminal characteristic.

Wherein, after the step starts, step S101 is executed immediately to select one of the telecommunication lines as a detection line for detecting capacitance characteristics. Specifically, the tester uses the touch sensor circuit (not shown) to select the detection line in the telecommunication line 11 during the test. In the first preferred embodiment of the present invention, the data line 111a is selected as the The detection line is used to detect the capacitance characteristic of the first capacitance component 4a.

After step S101 is executed, step S102 is executed immediately to input a detection voltage waveform to the detection line, and to input the same detection voltage waveform to the telecommunication lines intersecting with the detection line, so as to eliminate the capacitance characteristic of the first capacitor and detect Capacitance characteristics between the detection line and the ground terminal. Specifically, a test circuit such as a touch sensor circuit is used to input a detection voltage waveform 100 to the data line 111a. The waveform of the detection voltage waveform 100 can be a periodic or single-cycle voltage waveform (the first comparison of the present invention) In the preferred embodiment, a periodic voltage waveform is preferred, but to make the diagram simple and clear, it is only represented by one cycle), and because only the detection voltage waveform 100 is input to the data line 111a, it will be affected by the first capacitor 5a, 5d, 5g capacitance characteristics and can not detect the capacitance characteristics of the first capacitance component 4a, so at the same time to the drive line 112, 112a, 112b crossing the data line 111a input detection voltage waveform 100 to eliminate the first capacitance 5a, 5d, Capacitive characteristics of 5g (the principle of elimination is that both ends of the first capacitors 5a, 5d, and 5g have the same voltage waveform without charging and discharging effects).

Wherein, since the capacitance characteristics of the first capacitors 5a, 5d, and 5g have been eliminated, the tester can use the touch sensor circuit to measure the capacitance characteristics of the first capacitance component 4a between the data line 111a and the ground terminal 3a and make a record. .

In addition, please refer to FIG. 3 , which shows a schematic diagram of a touch display panel according to a second preferred embodiment of the present invention. As shown in FIG. 3 , the difference from the first preferred embodiment is that the driving lines 112, 112a, 112b cross the data lines 111, 111a, 111b in the second direction D2 and are arranged on the touch display panel 1. , there are multiple intersection nodes A, B, C, D, E, F, G, H, and I, and there is a second capacitor 6 between the data line 111a and the intersection node F, and there is a second capacitor 6 between the data line 111a and the intersection node I. The second capacitor 6a, similarly, the second capacitors 6, 6a are equivalent capacitances for the coupling capacitance and parasitic capacitance existing in the data line 111a and the intersection node F and the data line 111a and the intersection node I respectively (similar to the second capacitance) The definition of a capacitor 5-5h is the same), and will not be repeated here.

In order for those skilled in the art to understand the technical content of the present invention more easily, please refer to FIG. 3 and FIG. 4 together. FIG. 4 is a schematic flow chart of a detection method for a touch display panel according to a second preferred embodiment of the present invention. As shown in the figure, the detection method of the touch display panel according to the second preferred embodiment of the present invention includes the following steps:

Step S201: Select one of the telecommunication lines as a detection line for detecting capacitance characteristics; and

Step S202: Input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the intersection nodes and the telecommunication lines intersecting the detection line, so as to eliminate the capacitance characteristics of the first capacitor and the second capacitor, according to Detect the capacitance characteristics between the detection line and the ground terminal.

Wherein, after the step starts, step S201 is executed immediately to select one of the telecommunication lines as a detection line for detecting capacitance characteristics. Specifically, in the second preferred embodiment of the present invention, the data line 111a is also selected as the detection line, so as to detect the capacitance characteristic of the first capacitance component 4a.

After step S201 is executed, step S202 is executed immediately to input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the intersection nodes and the telecommunication lines intersecting the detection line, so as to eliminate the first capacitor and the second capacitor. The capacitance characteristics of the second capacitor are used to detect the capacitance characteristics between the detection line and the ground terminal. Specifically, the detection voltage waveform 100 is input to the data line 111a, and when only the detection voltage waveform 100 is input to the data line 111a, in addition to being affected by the capacitance characteristics of the first capacitors 5a, 5d, and 5g, it will also be affected by the first capacitor 5a, 5d, and 5g. Due to the influence of the capacitance characteristics of the two capacitors 6 and 6a, the capacitance characteristics of the first capacitance component 4a cannot be detected. Therefore, in addition to inputting the detection voltage waveform 100 to the driving lines 112, 112a, and 112b crossing the data line 111a at the same time, and at the same time. Node F, I input detection voltage waveform 100, and then eliminate the capacitance characteristics of the first capacitor 5a, 5d, 5g and the second capacitor 6, 6a (the principle of elimination is that the first capacitor 5a, 5d, 5g and the second capacitor 6, 6a Both ends of the battery are the same voltage waveform without the effect of charging and discharging).

Wherein, since the capacitive characteristics of the first capacitors 5a, 5d, 5g and the second capacitors 6, 6a have been eliminated, the tester can use the touch sensor circuit to measure the first capacitive component between the data line 111a and the ground terminal 3a. Capacitance characteristics of 4a.

In addition, please refer to FIG. 5. FIG. 5 shows a schematic diagram of a touch display panel according to a third preferred embodiment of the present invention. As shown in FIG. 5, the difference from the first preferred embodiment lies in the data line 111 and the data line 111a There is a third capacitor 7 between the data line 111a and the data line 111b, and there is a third capacitor 7a between the data line 111a and the data line 111b. Similarly, the third capacitors 7 and 7a are respectively the data line 111 and the data line 111a and the data line 111a and the data line 111b The capacitance equivalent to the existing coupling capacitance and parasitic capacitance (same as the definition of the first capacitance 5-5h), and the rest are the same as the first preferred embodiment, and will not be repeated here.

In order for those skilled in the art to understand the technical content of the present invention more easily, please refer to FIG. 5 and FIG. 6 together. FIG. 6 is a schematic flowchart of a detection method for a touch display panel according to a third preferred embodiment of the present invention. As shown in the figure, the detection method of the touch display panel according to the third preferred embodiment of the present invention includes the following steps:

Step S301: selecting one of the data lines of the telecommunication lines as a detection line for detecting capacitance characteristics; and

Step S302: Input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the data lines adjacent to the detection line and the drive lines crossing the detection line, so as to eliminate the first capacitance and the third capacitance Capacitance characteristics, based on which to detect the capacitance characteristics between the detection line and the ground terminal.

Wherein, after the step starts, step S301 is executed immediately to select one of the data lines among the telecommunication lines as a detection line for detecting capacitance characteristics. Specifically, in the third preferred embodiment of the present invention, the data line 111a is also selected as the detection line, so as to detect the capacitance characteristic of the first capacitance component 4a.

After step S301 is executed, step S302 is executed immediately to input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the data lines adjacent to the detection line and the drive lines crossing the detection line, so as to Capacitive characteristics of the first capacitor and the third capacitor are eliminated, so as to detect the capacitance characteristic between the detection line and the ground terminal. Specifically, the detection voltage waveform 100 is input to the data line 111a, and when only the detection voltage waveform 100 is input to the data line 111a, in addition to being affected by the capacitance characteristics of the first capacitors 5a, 5d, and 5g, it will also be affected by the first capacitor 5a, 5d, and 5g. The influence of the capacitive characteristics of the three capacitors 7 and 7a cannot detect the capacitive characteristics of the first capacitive component 4a. Therefore, in addition to inputting the detection voltage waveform 100 to the drive lines 112, 112a, and 112b crossing the data line 111a at the same time, the adjacent The same detection voltage waveform 100 is input to the data lines 111, 111b of the data line 111a, thereby eliminating the capacitance characteristics of the first capacitors 5a, 5d, 5g and the third capacitors 7, 7a.

Wherein, since the capacitance characteristics of the first capacitors 5a, 5d, 5g and the third capacitors 7, 7a have been eliminated, the capacitance characteristics of the first capacitor component 4a between the data line 111a and the ground terminal 3a can be detected.

In addition, please refer to FIG. 7. FIG. 7 shows a schematic diagram of a touch display panel of a fourth preferred embodiment of the present invention. As shown in FIG. 7, the difference from the first preferred embodiment lies in the driving line 112 and the driving line 112a There is a fourth capacitor 8 between the driving line 112a and the driving line 112b, and there is a fourth capacitor 8a between the driving line 112a and the driving line 112b. Similarly, the fourth capacitors 8 and 8a are respectively the driving line 112 and the driving line 112a and the driving line 112a and the driving line 112b. The capacitance equivalent to the existing coupling capacitance and parasitic capacitance (same as the definition of the first capacitance 5-5h), and the rest are the same as the first preferred embodiment, and will not be repeated here.

In order for those skilled in the art to understand the technical content of the present invention more easily, please refer to FIG. 7 and FIG. 8 together. FIG. 8 shows a schematic flowchart of a detection method for a touch display panel according to a fourth preferred embodiment of the present invention. As shown in the figure, the detection method of the touch display panel according to the fourth preferred embodiment of the present invention includes the following steps:

Step S401: selecting one of the driving lines of the telecommunication lines as a detection line for detecting capacitance characteristics; and

Step S402: Input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the drive lines adjacent to the detection line and the data lines crossing the detection line, so as to eliminate the first capacitance and the fourth capacitance Capacitance characteristics, based on which to detect the capacitance characteristics between the detection line and the ground terminal.

Wherein, after the step starts, step S401 is executed immediately to select one of the driving lines of the telecommunication lines as a detection line for detecting capacitance characteristics. Specifically, in the fourth preferred embodiment of the present invention, the driving line 112a is selected as the detection line, so as to detect the capacitance characteristic of the second capacitance component 4d.

After step S401 is executed, step S402 is executed immediately to input a detection voltage waveform to the detection line, and input the same detection voltage waveform to the drive lines adjacent to the detection line and the data lines crossing the detection line, so as to Capacitance characteristics of the first capacitor and the fourth capacitor are eliminated, so as to detect the capacitance characteristic between the detection line and the ground terminal. Specifically, the detection voltage waveform 100 is input to the driving line 112a, and because only the detection voltage waveform 100 is input to the driving line 112a, in addition to being affected by the capacitance characteristics of the first capacitors 5c, 5d, and 5e, it will also be affected by the first capacitor 5c, 5d, and 5e. The influence of the capacitive characteristics of the four capacitors 8 and 8a cannot detect the capacitive characteristics of the second capacitive component 4d. Therefore, in addition to inputting the detection voltage waveform 100 to the data lines 111, 111a, and 111b crossing the driving line 112a at the same time, the adjacent The same detection voltage waveform 100 is input to the driving lines 112 and 112b of the driving line 112a, thereby eliminating the capacitive characteristics of the first capacitors 5c, 5d, 5e and the fourth capacitors 8, 8a.

Wherein, since the capacitance characteristics of the first capacitors 5c, 5d, 5e and the fourth capacitors 8, 8a have been eliminated, the capacitance characteristics of the second capacitor component 4d between the driving line 112a and the ground terminal 3d can be detected.

To sum up the above, after adopting the detection method of the touch display panel adopted in the present invention, since the unnecessary capacitance characteristics can be eliminated, the correct capacitance characteristics can be detected and the induction of the data line or the driving line can be confirmed. characteristics, and accurate detection results can be obtained only by inputting the same voltage waveform, so the method of the present invention is simple and has high practicability in practice.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (7)

1. A detection method of a touch display panel, which is used to detect the capacitive characteristics of a conductor contacting a touch display panel, the touch display panel is electrically connected to a driving circuit, and includes a plurality of telecommunication lines, The telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged on the touch display panel in a first direction, and the driving lines cross the data lines in a second direction. Arranged on the touch display panel, there is at least one first capacitive component between the data lines and at least one ground terminal, at least one second capacitive component between the drive lines and the ground terminal, and the data lines and the ground terminals There is at least one first capacitance between the driving lines, and it is characterized in that the detection method of the touch display panel includes: (a) Select one of the telecommunication lines as a detection line for detecting capacitance characteristics; and (b) input a detection voltage waveform to the detection line, and apply a detection voltage to the telecommunication lines crossing the detection line The detection voltage waveform is input to eliminate the capacitance characteristic of the first capacitor, so as to detect the capacitance characteristic between the detection line and the ground terminal. 2 . The detection method of a touch display panel according to claim 1 , wherein the driving circuit is at least one of a data line driver circuit, a driving line driver circuit, and a capacitive touch sensor circuit. 3. The detection method of the touch display panel according to claim 1, wherein the drive lines cross the data lines in the second direction and are arranged on the touch display panel with a plurality of intersection nodes, When there is at least one second capacitance between the detection line and two of the cross nodes, the step (b) further includes a step (b0) of inputting the detection voltage waveform to the cross nodes , so as to eliminate the capacitance characteristic of the second capacitor. 4. A detection method of a touch display panel, which is used to detect the capacitive characteristics of a conductor contacting a touch display panel, the touch display panel is electrically connected to a driving circuit, and includes a plurality of telecommunication lines, The telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged on the touch display panel in a first direction, and the driving lines cross the data lines in a second direction. Arranged on the touch display panel, there is at least one first capacitive component between the data lines and at least one ground terminal, at least one second capacitive component between the drive lines and the ground terminal, and the data lines and the ground terminals There is at least one first capacitance between the driving lines, and at least one second capacitance between the data lines. It is characterized in that the detection method of the touch display panel includes: (a) selecting one of the data lines of the telecommunication lines as a detection line for detecting capacitance characteristics; and (b) Inputting a detection voltage waveform to the detection line, and inputting the detection voltage waveform to the data lines adjacent to the detection line and the drive lines crossing the detection line, so as to eliminate the first capacitance and The capacitance characteristic of the second capacitor is used to detect the capacitance characteristic between the detection line and the ground terminal. 5 . The detection method of a touch display panel according to claim 4 , wherein the driving circuit is at least one of a data line driver circuit, a driving line driver circuit, and a capacitive touch sensor circuit. 6. A detection method for a touch display panel, which is used to detect the capacitive characteristics of a conductor contacting a touch display panel, the touch display panel is electrically connected to a driving circuit, and includes a plurality of telecommunication lines, The telecommunication lines are composed of a plurality of data lines and a plurality of driving lines, the data lines are arranged on the touch display panel in a first direction, and the driving lines cross the data lines in a second direction. Arranged on the touch display panel, there is at least one first capacitive component between the data lines and at least one ground terminal, at least one second capacitive component between the drive lines and the ground terminal, and the data lines and the ground terminals There is at least one first capacitance between the driving lines, and at least one second capacitance between the driving lines. It is characterized in that the detection method of the touch display panel includes: (a) selecting one of the driving lines of the telecommunication lines as a detection line for detecting capacitance characteristics; and (b) Inputting a detection voltage waveform to the detection line, and inputting the detection voltage waveform to the driving lines adjacent to the detection line and the data lines crossing the detection line, thereby eliminating the first capacitance and The capacitance characteristic of the second capacitor is used to detect the capacitance characteristic between the detection line and the ground terminal. 7 . The detection method of a touch display panel according to claim 6 , wherein the driving circuit is at least one of a data line driver circuit, a driving line driver circuit, and a capacitive touch sensor circuit.