TWI426423B - Electronic device with both display and touch sensing - Google Patents

Description

Electronic products that combine display and touch functions

The invention relates to an electronic product having both a display function and a touch function, wherein the display unit and the touch unit can share a signal line.

FIG. 1 shows a first conventional technical diagram of integrating a touch panel on a liquid crystal display panel. As shown in FIG. 1 , the touch display panel 110 having the touch and display function receives the gate signal transmitted by the LCD (liquid crystal) driving circuit 120 through the gate signal line GS and the source signal line SS. Source signal for screen display. In addition, in response to the user's pressing, the touch display panel 110 transmits the sensing signal to the voltage comparator 121 in the LCD driving circuit 120 through the signal lines X and Y.

FIG. 2 is a schematic view showing a second conventional technique of integrating a touch panel on a liquid crystal display panel. Fig. 2 shows a pixel structure of a liquid crystal display panel incorporating a touch panel. As shown in FIG. 2, the pixel structure includes at least: subpixels 211 to 213, switches SW_X and SW_Y, a liquid crystal capacitor C _LC and a reference capacitor C _REF . The sub-pixels 211 to 213 are driven by the signals GS and SS to display red, green, and blue, respectively.

When the liquid crystal display panel is pressed by the user, the switches SW_X and SW_Y are turned on, so that the voltage values Vout(X) and Vout(y) are input to the liquid crystal driving circuit (not shown). Due to the user's pressing, the effective capacitance value of the liquid crystal capacitor C _LC changes. By sensing the change in the effective capacitance value of the liquid crystal capacitor C _LC , it can be determined whether or not the pixel structure is pressed. The physical position of this pixel structure is the coordinate of the pressed point.

However, the inventors believe that in the prior art of FIGS. 1 and 2, there are a large number of signal lines and pins between the touch display panel and the LCD driving circuit. Therefore, the size of an electronic product using such a conventional technique is not easily reduced and the cost is not easily lowered.

Therefore, the inventors have proposed an electronic product having both a display function and a touch function, which requires fewer signal lines and pins, so that the volume is easily reduced and the cost is easily reduced.

The invention relates to an electronic product having both a display function and a touch function, wherein the required number of signal lines and pins is small, so the volume is easy to be reduced and the cost is easy to be reduced.

The invention relates to an electronic product having both a display function and a touch function. The display unit and the touch unit can share a gate signal line, and the display drive circuit can scan and sense the touch unit.

The invention relates to an electronic product having both a display function and a touch function. The display unit and the touch unit can share a source signal line, and the display drive circuit can scan and sense the touch unit.

The invention relates to an electronic product having both a display function and a touch function. The display unit and the touch unit can share a gate signal line and a source signal line, and the display driving circuit can scan and sense the touch unit.

In order to make the above-mentioned contents of the present invention more comprehensible, several embodiments will be described hereinafter with reference to the accompanying drawings.

In the present invention, the display unit and the touch unit share certain signal lines. For example, in some embodiments, the display unit and the touch unit share a gate signal line; and in other embodiments, the display unit and the touch unit. The unit shares the source signal line. In this way, the number of signal lines and input and output pins required for the electronic product can be reduced, which is advantageous for the volume reduction and cost reduction of the electronic product.

In the underlying embodiment of the present invention, the display unit is, for example but not limited to, a liquid crystal display panel. The touch unit is, for example, a touch panel or the like. In some embodiments, the display unit and the touch unit are two separate units. In other embodiments, the display unit is integrated with the touch unit; for example, the touch unit is an upper substrate of a liquid crystal module (LCM), and the display unit is a lower substrate of the LCM. It is known to those skilled in the art that the present invention is not limited to the physical bonding relationship between the display unit and the touch unit.

First embodiment

Fig. 3A is a block diagram showing an electronic device according to a first embodiment of the present invention. As shown in FIG. 3A, the electronic device includes at least a display unit 310, a touch unit 320, and a display driving circuit 330.

The display driving circuit 330 includes a counter 331. As is known to the skilled person, the display driving circuit 330 further includes a gate driving circuit (not shown) and a source driving circuit (not shown). The gate driving circuit in the display driving circuit 330 sends a gate signal (scanning signal) through the gate signal line GS, and the source driving circuit transmits the source signal (data signal) through the source signal line SS. Further, in the following description, the detailed description of how the display driving circuit drives the display unit is not specifically described.

In this embodiment, the gate signal line GS is also coupled to the touch unit 320. That is, the display unit 310 and the touch unit 320 share the gate signal line GS. In this way, the number of signal lines and output pins required for electronic products is reduced, which is advantageous for volume reduction and cost reduction of electronic products.

Fig. 3B is a view showing the operation of the first embodiment of the present invention. Fig. 3C shows a signal timing chart according to the first embodiment of the present invention.

Please also refer to Figures 3B and 3C. It is assumed that the user presses the touch point 340 of the touch unit 320 and assumes that the resolution of the touch unit 320 is 180*240. In FIG. 3B, R1 to R180 represent rows of the touch unit 320, and C1 to C240 represent rows of the touch unit 320. Columns R1 R R180 receive the signals sent by display drive circuit 330. As shown in FIG. 3B, the sensing line SEN of the touch unit 320 includes a plurality of signal lines, and each of the signal lines corresponds to one of the rows C1 to C240 of the touch unit 320 for transmitting the line of the touch unit 320. A signal sent by one of C1~C240.

For the sake of convenience, FIG. 3C only shows the timing of the signals on the columns R1 to R3 and the rows C1 to C3 of the touch unit 320. In FIG. 3C, the columns R1 R R3 of the touch unit 320 sequentially receive the touch scan signal 351 and the gate signal 352 sent by the display driving circuit 330.

When the user presses the touch point 340 of the touch unit 320, the pressing action causes the column R1 of the touch unit 320 to electrically contact the line C2. This electrical contact is permeable, such as, but not limited to, a switch. In the touch unit 320, a switch is arranged at the intersection of each row and each column. These switches are open when the user is not pressing. When the user presses the touch unit 320, the related switch will be in an on state. In this manner, the touch scan signal 351 sent from the display driving circuit 330 to the column R1 is transmitted to the row C2 of the touch unit 320 through the switch to become the touch sensing signal 353. The touch sensing signal 353 is transmitted back to the display driving circuit 330 through the touch sensing signal line SEN. In order to receive the touch sensing signal, the touch sensing signal line SEN is in a signal receiving state.

When the display driving circuit 330 starts to sequentially send signals (such as the touch scanning signal and the gate signal) to the columns R1 R R180 of the touch unit 320, the counter 331 can start counting. When the display driving circuit 330 receives the touch sensing signal 353, the display driving circuit 330 calculates the counter value of the counter 331 to obtain the Y coordinate of the touch point 340. Taking the 3B picture as an example, when the display driving circuit 330 receives the touch sensing signal 353 transmitted from the line C2 through the sensing line SEN, according to the count value of the counter 331, the Y coordinate of the touch point 340 can be derived as 1.

In addition, the average count value of the counter 331 can also be taken as the Y coordinate of the touch point 340. For example, the frequency of the gate signal is 60 Hz, that is, 60 gate signals are sent to column R140 in one second. Assuming that the user presses the touch point 340 for about 1 second, the display driving circuit 330 receives 60 effective touch sensing signals 353 during the pressing time, and the counter 331 generates 60 effective count values. After converting the average of the 60 effective count values, the Y coordinate of the touch point 340 can be obtained. What's more, you can choose a more representative count value from the 60 count values (for example, the number of counts generated can be removed when the press or press is about to end) to get more accurate touch. Point Y of point 340.

The display driving circuit 330 can detect which sensing line has a valid touch sensing signal, and thereby the X coordinate of the touch point 340 can be recognized. Taking FIG. 3B as an example, since an effective touch sensing signal appears on line C2, the X coordinate of touch point 340 is identified as 2. In this way, it can be known that the coordinate (X, Y) of the pressing point 340 is (2, 1).

In addition, sometimes the user may touch multiple rows of the touch unit 320 at the same time, which may cause some column pixels of the display unit 310 to be accidentally discharged. In this embodiment, in order to avoid this, the polarity of the touch scan signal and the gate signal are opposite to each other. For example, in FIG. 3C, the touch scan signal is a negative voltage, and the gate signal is a positive voltage. . Of course, the invention is not limited thereto.

In summary, in the first embodiment of the present invention, the display unit and the touch unit can share a gate signal line (the gate signal line is used to transmit the gate signal and the touch scan signal), thereby completing the touch unit. Scanning and sensing. Due to the relationship of the common signal lines, the volume of the electronic product can be reduced and the cost thereof can be reduced.

Second embodiment

4A is a block diagram showing an electronic device in accordance with a second embodiment of the present invention. As shown in FIG. 4A, the electronic device includes at least a display unit 410, a touch unit 420, and a display driving circuit 430. The display driving circuit 430 includes a counter 431.

In the second embodiment, the display unit 410 and the touch unit 420 can share the gate signal line GS and the source signal line SS. The display driving circuit 530 can send the touch scanning signal to the touch unit 420 through the gate signal line GS. The display driving circuit 430 can receive the touch sensing signal returned by the touch unit 420 through the source signal line SS. In this way, the number of signal lines and input and output pins required for the electronic product can be further reduced, which is more conducive to the volume reduction and cost reduction of the electronic product.

Fig. 4B is a diagram showing the signal timing chart according to the second embodiment of the present invention. In the following description, for the sake of simplicity, it is assumed that the user presses the intersection of column R1 and row C2 (i.e., touch point 340 of FIG. 3B).

Please refer to both Figures 3B and 4B. In FIG. 4B, the columns R1 R R3 of the touch unit 420 sequentially receive the touch scan signal 451 and the gate signal 452 sent by the display driving circuit 430. Moreover, the lines C1 C C3 of the touch unit 420 receive the display material signal 453 sent by the display driving circuit 430. The display data signal 453 is for driving the display unit 410 to display the screen. Therefore, for the touch unit 420, displaying the material signal 453 is meaningless. In the second embodiment, between the two adjacent display data signals 453, the display driving circuit 430 receives the touch sensing signals returned by the touch unit 420.

When the user presses the touch point, the pressing action causes the column R1 of the touch unit 420 to electrically contact the row C2. In this manner, the touch scan signal 451 sent from the display driving circuit 430 to the column R1 is transmitted to the row C2 of the touch unit 420 to become the touch sensing signal 454. The touch sensing signal 454 is transmitted back to the display driving circuit 430 via the source signal line SS. In order to receive the touch sensing signal, between the two adjacent display data signals 453, the source signal line SS is in a signal receiving state.

The second embodiment has a similar coordinate determination method as the first embodiment. For example, the driving display circuit 430 can determine which row of the line C1~C240 returns the touch sensing signal 454, and the X coordinate of the touch point can be known. In addition, the counter 431 in the drive display circuit 430 can count the touch sensing signal 454. Based on the count value, the drive display circuit 430 determines the Y coordinate of the touch point.

In summary, in the second embodiment of the present invention, the display unit and the touch unit can share a gate signal line (a gate signal line for transmitting a gate signal and a touch scan signal) and a source signal line (a source). The pole signal line is used for transmitting the source signal and the touch sensing signal), thereby completing scanning and sensing of the touch unit. Due to the relationship of the common signal lines, the volume of the electronic product can be reduced and the cost thereof can be reduced.

Third embodiment

Fig. 5A is a block diagram showing an electronic device according to a third embodiment of the present invention. As shown in FIG. 5A, the electronic device includes at least a display unit 510, a touch unit 520, and a display driving circuit 530. The display driving circuit 530 includes a counter 531.

In the third embodiment, the display unit 510 and the touch unit 520 can share the source signal line SS, and the display driving circuit 530 can send the touch scan signal to the touch unit 520 through the source signal line SS. In this way, the number of signal lines and input and output pins required for the electronic product can be further reduced, which is more conducive to the volume reduction and cost reduction of the electronic product.

Fig. 5B is a diagram showing a signal timing chart according to a third embodiment of the present invention. In the following description, for the sake of simplicity, it is assumed that the user presses the intersection of column R1 and row C2 (i.e., touch point 340 of FIG. 3B).

Please also refer to Figures 3B and 5B. In FIG. 5B, the lines C1 C C3 of the touch unit 520 receive the display material signal 552 sent by the display driving circuit 530. The display data signal 552 is meaningless to the touch unit 520. In addition, the rows C1 C C3 of the touch unit 520 sequentially receive the touch scan signals 551 sent by the display driving circuit 530 , and the touch scan signals 551 are inserted between the two adjacent display data signals 552 .

When the user presses the touch point, the pressing action causes the row C2 of the touch unit 420 to electrically contact the column R1. Thus, the touch scan signal 551 sent from the display driving circuit 530 to the row C2 is transmitted to the column R1 of the touch unit 420 to become the touch sensing signal 553. The touch sensing signal 553 is transmitted back to the display driving circuit 530 via the touch sensing signal line SEN. In order to receive the touch sensing signal, the touch sensing signal line SEN is in a signal receiving state. In addition, the polarity of the touch scan signal 551 is opposite to the display data signal 552.

The third embodiment has a coordinate determination method similar to that of the first embodiment. For example, the driving display circuit 530 can determine which column of the columns R1 R R180 returns the touch sensing signal, and the Y coordinate of the touch point can be known. In addition, the counter 531 counts the count value of the touch sensing signal, and drives the display circuit 530 to determine the X coordinate of the touch point.

In summary, in the third embodiment of the present invention, the display unit and the touch unit can share a source signal line (the source signal line is used for transmitting the source signal and the touch scan signal), thereby completing the touch unit. Scanning and sensing. Due to the relationship of the common signal lines, the volume of the electronic product can be reduced and the cost thereof can be reduced.

Fourth embodiment

Fig. 6A is a block diagram showing an electronic device according to a fourth embodiment of the present invention. As shown in FIG. 6A, the electronic device includes at least a display unit 610, a touch unit 620, and a display driving circuit 630. The display driving circuit 630 includes a counter 631.

In the fourth embodiment, the display unit 610 and the touch unit 620 can share the gate signal line GS and the source signal line SS. The display driving circuit 630 can send the touch scan signal to the touch unit 620 through the source signal line SS; and the display driving circuit 630 can receive the touch sensing signal returned by the touch unit 620 through the gate signal line GS. . In this way, the number of signal lines and input and output pins required for the electronic product can be further reduced, which is more conducive to the volume reduction and cost reduction of the electronic product.

Fig. 6B is a diagram showing a signal timing chart according to a fourth embodiment of the present invention. In the following description, for the sake of simplicity, it is assumed that the user presses the intersection of column R1 and row C2 (i.e., touch point 340 of FIG. 3B).

Please also refer to Figures 3B and 6B. In FIG. 6B, the lines C1 C C3 of the touch unit 620 receive the display material signal 652 sent by the display driving circuit 630. Displaying the data signal 652 is meaningless to the touch unit 620. In addition, the rows C1 C C3 of the touch unit 620 sequentially receive the touch scan signals 651 sent by the display driving circuit 630 , and the touch scan signals 651 are inserted between the two adjacent display data signals 652 . In addition, the columns R1 R R3 of the touch unit 620 receive the gate signal 653 sent by the display driving circuit 630, and the gate signal 653 is used to turn on/off the pixel column of the display unit. The gate signal 653 is meaningless to the touch unit 620. In addition, the polarity of the touch scan signal 651 is opposite to the display data signal 652.

When the user presses the touch point, the pressing action causes the row C2 of the touch unit 620 to electrically contact the column R1. In this manner, the touch scan signal 651 sent from the display driving circuit 630 to the row C2 is transmitted to the column R1 of the touch unit 620 to become the touch sensing signal 654. The touch sensing signal 654 is transmitted back to the display driving circuit 630 via the gate signal line GS. In order to receive the touch sensing signal, between the two adjacent gate signals 653, the gate signal line GS is in a signal receiving state.

The fourth embodiment has a similar coordinate determination method as the first embodiment. For example, the driving display circuit 630 can determine which column of the columns R1 R R180 returns the touch sensing signal, and the Y coordinate of the touch point can be known. In addition, according to the counter 631 counting the count value of the returned touch sensing signal, the driving display circuit 630 can determine the X coordinate of the touch point.

In summary, in the fourth embodiment of the present invention, the display unit and the touch unit can share a gate signal line (a gate signal line for transmitting a gate signal and a touch sensing signal) and a source signal line (a source). The pole signal line is used for transmitting the source signal and the touch scan signal), and the scanning and sensing of the touch unit are completed. Due to the relationship of the common signal lines, the volume of the electronic product can be reduced and the cost thereof can be reduced.

In one embodiment of the present invention, the display unit and the touch unit can share the gate signal line; in other embodiments of the present invention, the display unit and the touch unit can share the source signal line; In still other embodiments of the present invention, the display unit and the touch unit can share the gate signal line and the source signal line. As such, the volume of the electronic product can be reduced and its cost can be reduced.

In the above, the present invention has been disclosed in several embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

110. . . Touch display panel

120. . . LCD (liquid crystal) driving circuit

X, Y. . . Signal line

121. . . Voltage comparator

211~213. . . Subpixel

SW_X, SW_Y. . . switch

CLC. . . Liquid crystal capacitor

CREF. . . Reference capacitor

Vout(x), Vout(y). . . Voltage value

310. . . Display unit

320. . . Touch unit

330. . . Display driver circuit

331. . . counter

GS, SS, SEN. . . Signal line

340. . . Touch point

R1~R180. . . Column

C1~C240. . . Row

351. . . Touch scan signal

352. . . Gate signal

353. . . Touch sensing signal

410. . . Display unit

420. . . Touch unit

430. . . Display driver circuit

431. . . counter

451. . . Touch scan signal

452. . . Gate signal

453. . . Display data signal

454. . . Touch sensing signal

510. . . Display unit

520. . . Touch unit

530. . . Display driver circuit

531. . . counter

551. . . Touch scan signal

552. . . Display data signal

553. . . Touch sensing signal

610. . . Display unit

620. . . Touch unit

630. . . Display driver circuit

631. . . counter

651. . . Touch scan signal

652. . . Display data signal

653. . . Gate signal

654. . . Touch sensing signal

FIG. 1 shows a first conventional technical diagram of integrating a touch panel on a liquid crystal display panel.

FIG. 2 is a schematic view showing a second conventional technique of integrating a touch panel on a liquid crystal display panel.

Fig. 3A is a block diagram showing an electronic device according to a first embodiment of the present invention.

Fig. 3B is a view showing the operation of the first embodiment of the present invention.

Fig. 3C shows a signal timing chart according to the first embodiment of the present invention.

4A is a block diagram showing an electronic device in accordance with a second embodiment of the present invention.

Fig. 4B is a diagram showing the signal timing chart according to the second embodiment of the present invention.

Fig. 5A is a block diagram showing an electronic device according to a third embodiment of the present invention.

Fig. 5B is a diagram showing a signal timing chart according to a third embodiment of the present invention.

Fig. 6A is a block diagram showing an electronic device according to a fourth embodiment of the present invention.

Fig. 6B is a diagram showing a signal timing chart according to a fourth embodiment of the present invention.

310. . . Display unit

320. . . Touch unit

330. . . Display driver circuit

331. . . counter

GS, SS, SEN. . . Signal line

Claims (24)

An electronic product having both display and touch functions, comprising: a display unit having a plurality of first signal lines and a plurality of second signal lines; a touch unit having a plurality of columns and a plurality of rows; and a display The driving circuit includes a counter, wherein the first signal lines are coupled to the display driving circuit, the display unit and the columns of the touch unit, and the first signal lines are connected by the display unit and the touch The first signal line is used to transmit a first driving signal and a first touch signal between the display driving circuit, the display unit and the touch unit; the second signal lines are shared by the control unit; The second signal line is shared by the display unit and the touch unit, and the second signal lines are used for the display. a driving circuit, a second driving signal and a second touch signal are transmitted between the display unit and the touch unit; and the display driving circuit is configured by the first touch signal and the second touch signal Touch unit Depicting and sensing, and determining, by the display driving circuit, a first coordinate of a touch point, wherein the counter counts the first touch signal or the second touch signal to determine one of the touch points coordinate. The electronic product shown in claim 1 , wherein the first signal lines are a plurality of gate signal lines, the first driving signal is a gate signal, and the first touch signal is a touch Scanning the signal, the display driving circuit sequentially sends the touch scan signal to the touch unit The second signal line is a plurality of source signal lines, the second driving signal is a source signal, and the second touch signal is a touch sensing signal, and the touch unit returns the touch sensing Signal to the display driver circuit. The electronic product shown in claim 2, wherein the display driving circuit determines which of the source signal lines is returned by the touch sensing signal to know the first of the touch points. The counter of the display driving circuit counts the received touch sensing signal to know the second coordinate of the touch point. An electronic product as shown in claim 3, wherein when the touch unit is touched, a corresponding column of the columns of the touch unit corresponds to one of the rows and is electrically connected to each other. The touch scan signal received by the touch unit becomes the touch sensing signal for returning to the display driving circuit. The electronic product shown in claim 1 , wherein the first signal lines are a plurality of gate signal lines, the first driving signal is a gate signal, and the first touch signal is a touch Inductive signal, the touch unit returns the touch sensing signal to the display driving circuit, the second signal lines are a plurality of source signal lines, the second driving signal is a source signal, and the second touch The signal is a touch scan signal, and the display driving circuit sequentially sends the touch scan signal to the rows of the touch unit. The electronic product shown in claim 5, wherein the display driving circuit determines which of the gate signal lines is returned by the touch sensing signal to know the first point of the touch point The counter of the display driving circuit counts the received touch sensing signal to know the second coordinate of the touch point. An electronic product as shown in claim 6 , wherein when the touch unit is touched, a corresponding column of the columns of the touch unit corresponds to one of the rows and is electrically connected to each other The touch scan signal received by the touch unit becomes the touch sensing signal for returning to the display driving circuit. An electronic product having both display and touch functions, comprising: a display unit having a plurality of first signal lines and a plurality of second signal lines; and a touch unit having a plurality of first electrodes and a plurality of second electrodes a display driving circuit including a counter; and a plurality of third signal lines coupled to the display driving circuit and the second electrodes of the touch unit, wherein the third signal lines are used in the display driving circuit A first touch signal is transmitted between the touch units; wherein the first signal lines are coupled to the display driving circuit, the display unit, and the first electrodes of the touch unit, the first The signal line is shared by the display unit and the touch unit. The first signal line is used to transmit a first driving signal and a first touch between the display driving circuit, the display unit and the touch unit. The second signal line is coupled to the display driving circuit and the display unit, and the second signal line is configured to transmit a second driving signal between the display driving circuit and the display unit; and the display drive The circuit scans and senses the touch unit by using the first touch signal and the second touch signal, and determines a first coordinate of a touch point by the display driving circuit, and the counter is counted by the counter The first a touch signal or the second touch signal to determine a second coordinate of the touch point. An electronic product as shown in claim 8 , wherein the first electrodes of the touch unit are a plurality of rows, and the second electrodes of the touch unit are a plurality of rows; the first signals The line is a plurality of gate signal lines, the first driving signal is a gate signal, the first touch signal is a touch scan signal, and the display driving circuit sequentially sends the touch scan signal to the touch unit The columns. The electronic product of claim 9, wherein the second signal lines are a plurality of source signal lines, the second driving signal is a source signal; and the third signal lines are plural The sensing signal line is a touch sensing signal, and the touch unit returns the touch sensing signal to the display driving circuit. The electronic product shown in claim 10, wherein the display driving circuit determines which of the sensing signal lines is returned by the display driving circuit to learn the first of the touch points. And the counter of the display driving circuit counts the received touch sensing signal to know the second coordinate of the touch point. An electronic product as shown in claim 11, wherein when the touch unit is touched, one of the corresponding columns of the touch units corresponds to one of the rows The electrical contact is such that the touch scan signal received by the touch unit becomes the touch sensing signal for returning to the display driving circuit. Such as the electronic product shown in item 8 of the patent application, wherein The first electrodes of the touch unit are a plurality of rows, and the second electrodes of the touch unit are a plurality of columns; the first signal lines are a plurality of source signal lines, and the first driving signal is The first touch signal is a touch scan signal, and the display drive circuit sequentially sends the touch scan signal to the rows of the touch unit. The electronic product as shown in claim 13 , wherein the second signal lines are a plurality of gate signal lines, the second driving signal is a gate signal; and the third signal lines are plural Inductive signal line, the second touch signal is a touch sensing signal, and the touch unit returns the touch sensing signal to the display driving circuit; wherein the display driving circuit determines that the touch sensing signal is Which one of the sensing signal lines is returned to learn the first coordinate of the touch point, and the counter of the display driving circuit counts the received touch sensing signal to know the touch The second coordinate of the point. An electronic product having both display and touch functions, comprising: a display unit having a plurality of first signal lines and a plurality of second signal lines; and a touch unit having a plurality of first electrodes and a plurality of second electrodes a display driving circuit including a counter; and a plurality of third signal lines coupled to the display driving circuit and the second electrodes of the touch unit, wherein the third signal lines are used in the display driving circuit A second touch signal is transmitted between the touch units; wherein the first signal lines are coupled to the display driving circuit, and the The display unit and the first electrodes of the touch unit, the first signal lines are shared by the display unit and the touch unit, and the first signal lines are used in the display driving circuit and the display unit A first driving signal and a first touch signal are transmitted between the touch units; the second signal lines are coupled to the display driving circuit and the display unit, and the second signal lines are used for driving in the display A second driving signal is transmitted between the circuit and the display unit; and the display driving circuit scans and senses the touch unit by using the first touch signal and the second touch signal, and the display is performed by the display The driving circuit determines a first coordinate of a touch point, and the counter counts the first touch signal or the second touch signal to determine a second coordinate of the touch point; wherein the display unit and the touch The control units are independent or integrated with each other. The electronic device of claim 15 , wherein the first electrodes of the touch unit are a plurality of rows, and the second electrodes of the touch unit are a plurality of rows; the first signals The line is a plurality of gate signal lines, the first driving signal is a gate signal, the first touch signal is a touch scan signal, and the display driving circuit sequentially sends the touch scan signal to the touch unit The second signal lines are a plurality of source signal lines, the second driving signal is a source signal; and the third signal lines are a plurality of sensing signal lines, the second touch signal For a touch sensing signal, the touch unit returns the touch sensing signal to The display driving circuit; when the touch unit is touched, one of the corresponding columns of the columns of the touch unit and the corresponding one of the rows are electrically connected to each other, so that the touch unit is The received touch scan signal becomes the touch sensing signal for returning to the display driving circuit. The electronic product of claim 16, wherein the gate signal and the polarity of the touch scan signal are opposite to each other. The electronic device of claim 15 , wherein the first electrodes of the touch unit are a plurality of rows, and the second electrodes of the touch unit are a plurality of columns; the first signals The line is a plurality of source signal lines, the first driving signal is a source signal, the first touch signal is a touch scan signal, and the display driving circuit sequentially sends the touch scan signal to the touch unit The second signal lines are a plurality of gate signal lines, the second driving signal is an interpole signal; and the third signal lines are a plurality of sensing signal lines, the second touch signal For a touch sensing signal, the touch unit returns the touch sensing signal to the display driving circuit. The electronic product shown in claim 18, wherein the display driving circuit determines which of the sensing signal lines is returned by the display driving circuit to learn the first of the touch points. a coordinate; and the counter of the display driving circuit counts the received touch sensing signal to know the second coordinate of the touch point; When the touch unit is touched, one of the corresponding columns of the touch units and the corresponding one of the rows are electrically connected to each other such that the touch is received by the touch unit. The control scan signal becomes the touch sensing signal for returning to the display driving circuit. The electronic product of claim 19, wherein the source signal and the polarity of the touch scan signal are opposite to each other. An electronic product having both display and touch functions, comprising: a display unit having a plurality of first signal lines and a plurality of second signal lines; and a touch unit having a plurality of first electrodes and a plurality of second electrodes And a display driving circuit, comprising: a counter; wherein the first signal lines are coupled to the display driving circuit, the display unit and the first electrodes of the touch unit, the first signal lines are The display unit is shared with the touch unit, and the first signal line is configured to transmit a first driving signal and a first touch signal between the display driving circuit, the display unit and the touch unit; The second signal lines are coupled to the display driving circuit and the second electrodes of the touch unit. The second signal lines are shared by the display unit and the touch unit, and the second signal lines are used by the second signal lines. Transmitting a second driving signal and a second touch signal between the display driving circuit, the display unit and the touch unit; and the display driving circuit by the first touch signal and the second touch Signal and Scanning control unit and the sensor, and the display driving circuit is determined by one of a first coordinate of the touch point, the counting by the second counter a touch signal or the second touch signal to determine a second coordinate of the touch point; wherein the display unit and the touch unit are independent or integrated with each other. An electronic product as shown in claim 21, wherein the first electrodes of the touch unit are a plurality of columns, and the second electrodes of the touch unit are a plurality of rows; the first signals The line is a plurality of gate signal lines, the first driving signal is a gate signal, the first touch signal is a touch scan signal, and the display driving circuit sequentially sends the touch scan signal to the touch unit And the second signal lines are a plurality of source signal lines, the second driving signal is a source signal, and the second touch signal is a touch sensing signal, and the touch unit returns The touch sensing signal is sent to the display driving circuit. The electronic product shown in claim 22, wherein the display driving circuit determines which of the source signal lines is returned by the touch sensing signal to know the first of the touch points. And the counter of the display driving circuit counts the received touch sensing signal to learn the second coordinate of the touch point; when the touch unit is touched, the touch unit Corresponding to one of the rows, the corresponding one of the rows is in electrical contact with each other, so that the touch scan signal received by the touch unit becomes the touch sensing signal for returning to the Display drive circuit. The electronic product of claim 21, wherein the first electrodes of the touch unit are a plurality of columns, and the touch unit The second electrode is a plurality of lines; the first signal lines are a plurality of gate signal lines, the first driving signal is a gate signal, and the first touch signal is a touch sensing signal, and the touch The unit returns the touch sensing signal to the display driving circuit; and the second signal lines are a plurality of source signal lines, the second driving signal is a source signal, and the second touch signal is a touch And scanning the signal, the display driving circuit sequentially sends the touch scan signal to the rows of the touch unit.