TW201809989A - Touch display device - Google Patents

Abstract

A touch display device includes a display array, a multiplexer, a common bump, a sensor line, and a driver chip. The multiplexer is electrically connected to the display array. The common bump and the multiplexer are electrically connected at a node. The sensor line is electrically connected between the node and a touch electrode layer. The driver chip is electrically connected to the common bump. The driver chip includes a display driver and a touch driver. The display driver is configured to cooperate with the common bump and the multiplexer to output a display data signal to the display array. The touch driver is configured to cooperate with the common bump and the sensor line to output a touch driving signal to the touch electrode layer.

Description

Touch display device

This disclosure relates to a touch technology, and more particularly to a touch display device.

In recent years, with the development of touch display technology, touch display devices (such as touch display panels) have been applied to various electronic devices, such as smart phones, tablet computers, or other portable electronic devices.

In the prior art, in order to achieve the touch function and the display function at the same time, the touch driver and the display driver of the touch display panel respectively output signals through different connection bumps. This method not only makes it impossible to reduce the number of connection pads, but also complicates the routing.

In view of this, the present disclosure proposes a touch display device to solve the problems mentioned in the prior art.

One embodiment of the present disclosure relates to a touch display device. The touch display device includes a display array, a multiplexer, a common connection pad, a sensing line, and a driving chip. The multiplexer is electrically connected to the display array. The common connection pad is electrically connected to a node with the multiplexer. Induction wire Is connected between the node and a touch electrode layer. The driving chip is electrically connected to the common connection pad. The driving chip includes a display driver and a touch driver. The display driver is used to cooperatively share the connection pad and the multiplexer to output a display data signal to the display array. The touch driver is used for outputting a touch driving signal to the touch electrode layer in cooperation with a common connection pad and a sensing line.

One embodiment of the present disclosure relates to a touch display device. The touch display device includes a display array, at least one multiplexer, at least one common connection pad, a plurality of sensing lines, and a driving chip. The display array contains a plurality of data lines. At least one multiplexer is electrically connected to the data lines. At least one common connection pad is electrically connected to at least one multiplexer. The plurality of sensing lines are respectively electrically connected between one of the data lines and a touch electrode layer. The driving chip is electrically connected to at least one common connection pad. The driving chip includes a display driver and a touch driver. The display driver is used to cooperate with at least one shared connection pad and at least one multiplexer to output a display data signal to the data lines. The touch driver is used to cooperate with at least one common connection pad, at least one multiplexer, the data lines and the sensing lines to output a touch driving signal to the touch electrode layer.

In summary, in the touch display device of the present disclosure, the display driver and the touch driver respectively output the display data signal and the touch driving signal through a shared connection pad, so that the number of connection pads can be reduced and the routing the complexity. In addition, the area for configuring the connection pad can be saved.

100, 300, 500‧‧‧ touch display devices

110‧‧‧display array

120a, 120b ‧ ‧ multiplexer

130‧‧‧Driver

132‧‧‧Display Driver

134‧‧‧Touch Driver

140‧‧‧Touch electrode layer

202, 210, 402, 410‧‧‧ polarizing layer

204, 404‧‧‧ filter layer

206, 406‧‧‧ LCD layer

208, 408‧‧‧ driving transistor glass layer

R1, R2, G1, G2, B1, B2 ‧‧‧ sub pixels

P1, P2‧‧‧shared connection pad

SL1‧‧‧scan line

DL1, DL2, DL3, DL4, DL5, DL6 ‧‧‧ data cable

SEN1, SEN2, SEN3, SEN4, SEN5, SEN6

M1, M2, M3, M4, M5, M6‧‧‧ switches

S1, S2, S3, S4, S5, S6‧‧‧ switches

DS‧‧‧Display data signal

TP‧‧‧Touch Drive Signal

VG, VG1, VG2, VG3‧‧‧scan signal

MS1, MS2, MS3, MS4, MS5, MS6‧‧‧ control signals

SS1, SS2, SS3, SS4, SS5, SS6‧‧‧Control signals

N1, N2‧‧‧nodes

BUF1, BUF2‧‧‧Buffer

VGH, VGL‧‧‧Logic Level

DIS_TIME‧‧‧Display period

TP_TIME1, TP_TIME2 ‧‧‧ During touch

For the above and other purposes, features, advantages, and practicalities of this disclosure The embodiments can be more clearly understood. The description of the drawings is as follows: FIG. 1 is a schematic diagram of a touch display device according to some embodiments of the present disclosure; and FIG. 2 is a diagram of some embodiments according to the present disclosure. FIG. 3 is a schematic structural view of a touch display device; FIG. 3 is a schematic view of a touch display device according to some embodiments of the disclosure; FIG. 4 is a touch display device according to some embodiments of the disclosure; 5 is a schematic diagram of a touch display device according to some embodiments of the disclosure; and FIG. 6 is a timing diagram of multiple signals of the touch display device of FIG. 5 .

The following is a detailed description with examples and the accompanying drawings, but the examples provided are not intended to limit the scope covered by this disclosure, and the description of the structure operation is not used to limit the order of its implementation, and any recombination of components The structure and the devices with the same effect are all the scope covered by this disclosure. In addition, the drawings are for illustrative purposes only, and are not drawn to the original dimensions. In order to facilitate understanding, the same elements or similar elements in the following description will be described with the same symbols.

The terms used throughout the specification and the scope of patent applications, unless otherwise specified, usually have the ordinary meaning of each term used in this field, in the content disclosed here, and in special content.

Regarding the "first", "second", "third", etc. used in this article, they are not meant to specifically refer to the order or order, nor are they used to limit this disclosure. They are only used to distinguish the same technology. Elements or operations described by words.

Please refer to Figure 1. FIG. 1 is a schematic diagram of a touch display device 100 according to some embodiments of the disclosure. The touch display device 100 is, for example, a touch display panel. The touch display device 100 has a touch function and a display function.

The touch display device 100 includes a display array 110, a multiplexer 120a, a common connection pad P1, a sensing line SEN1, and a driving chip 130.

In some embodiments, the touch display device 100 further includes a multiplexer 120b, a common connection pad P2, a sensing line SEN2, and a touch electrode layer 140.

The display array 110 includes a plurality of sub pixels R1, G1, B1, R2, G2, B2, a plurality of data lines DL1 to DL6, and a plurality of scanning lines. For simplicity and ease of understanding, only six sub-pixels, six data lines, and one scan line are shown in Figure 1. However, this disclosure is not limited to these numbers. In addition, the arrangement of the sub-pixels in Fig. 1 is only for the purpose of illustration. Various sub-pixel arrangement methods are within the scope of this disclosure, such as: stripe arrangement, delta arrangement, or other various arrangement methods.

The sub-pixels are electrically connected to corresponding data lines and corresponding scanning lines, respectively. In the example in FIG. 1, the sub-pixels R1, G1, B1, R2, G2, and B2 are arranged in the same column. These sub pixels are electrically connected to the scanning line SL1. The sub-pixels receive the scanning signal VG from the driving chip 130 through the scanning line SL1. These sub pixels are electrically connected to the data lines DL1 to DL6, respectively. The sub-pixels further receive the display data signal DS from the driving chip 130 through the data lines DL1 to DL6. The driving transistors of these sub-pixels will be turned on during the enabling period of the scanning signal VG. When the driving transistor is turned on, the liquid crystal capacitors in these sub-pixels will be charged to the corresponding voltage level according to the display data signal DS to display the corresponding gray level.

The multiplexer 120a and the multiplexer 120b are electrically connected to the display array 110. The multiplexer 120a or the multiplexer 120b includes a plurality of switches. Taking the example in FIG. 1 as an example, the multiplexer 120a and the multiplexer 120b each include three switches, but this disclosure is not limited to this number. Specifically, the switch M1 is electrically connected between the data line DL1 and the node N1. The switch M2 is electrically connected between the data line DL2 and the node N1. The switch M3 is electrically connected between the data line DL3 and the node N1. The switch M4 is electrically connected between the data line DL4 and the node N2. The switch M5 is electrically connected between the data line DL5 and the node N2. The switch M6 is electrically connected between the data line DL6 and the node N2.

In other words, the multiplexer 120a is electrically connected between the common connection pad P1 and the data lines DL1 to DL3. The multiplexer 120b is electrically connected between the common connection pad P2 and the data lines DL4 to DL6. In other words, the common connection pad P1 and the multiplexer 120a are electrically connected to the node N1. The common connection pad P2 and the multiplexer 120b are electrically connected to the node N2. The driving chip 130 is electrically connected to the common connection pad P1 and the common connection pad P2.

The sensing line SEN1 is electrically connected between the node N1 and the touch electrode layer 140. The sensing line SEN2 is electrically connected to the node N2 and the touch electrode layer. Between 140. In some embodiments, the touch electrode layer 140 and the display array 110 are respectively disposed in different layers in the touch display device 100. This section will be described later in conjunction with Figure 2 and Figure 4. The sensing line SEN1 and the sensing line SEN2 may be implemented by a metal wire or a structure having a conductive property.

The driving chip 130 includes a display driver 132 and a touch driver 134. The display driver 132 is used to output a display data signal DS. The touch driver 134 is used to output a touch driving signal TP. In some embodiments, the driving chip 130 is implemented by a touch with display driver integration (TDDI). That is, the display driver 132 and the touch driver 134 are integrated into a single chip.

The display driver 132 includes a gate driver and a source driver. The gate driver is used to output the scanning signal VG. The source driver is used to output a display data signal DS.

Furthermore, the source driver of the display driver 132 includes a buffer BUF1 and a buffer BUF2. The buffer BUF1 is used to output a display data signal DS with a positive polarity. The buffer BUF2 is used to output a display data signal DS of negative polarity. The display driver 132 further includes switches S1 to S4. The first terminal of the switch S1 and the first terminal of the switch S3 are electrically connected to the buffer BUF1. The first terminal of the switch S2 and the first terminal of the switch S4 are electrically connected to the buffer BUF2. The second terminal of the switch S1 and the second terminal of the switch S2 are electrically connected to the common connection pad P1. The second terminal of the switch S3 and the second terminal of the switch S4 are electrically connected to the common connection pad P2.

In these embodiments, the touch driving signal TP is positive As an example, the touch driver 134 is electrically connected to the first end of the switch S1 and the first end of the switch S3, but this disclosure is not limited thereto. In other words, the switches S1 and S3 are used to transmit the display data signal DS and the touch driving signal TP.

Specifically, the switch S1 is used to be turned on to transmit the display data signal DS and the touch driving signal TP to the common connection pad P1. The display data signal DS is transmitted to the multiplexer 120a through the common connection pad P1. The touch driving signal TP is transmitted to the sensing line SEN1 through the common connection pad P1.

The switch S3 is turned on to transmit the display data signal DS and the touch driving signal TP to the common connection pad P2. The display data signal DS is transmitted to the multiplexer 120b through the common connection pad P2. The touch driving signal TP is transmitted to the sensing line SEN2 through the common connection pad P2.

In the conventional method, the display data signal DS and the touch driving signal TP are respectively output through different connection pads. Compared with the conventional method, in the touch display device 100, the display data signal DS and the touch driving signal TP are output through the same shared connection pad P1 (or shared connection pad P2), so the number of connection pads can be reduced and Reduce the complexity of routing. In addition, since the number of connection pads is reduced, the area for arranging the connection pads can be saved.

The touch driving signals TP output through the sensing lines SEN1 and SEN2 will be respectively output to different positions of the touch electrode layer 140. For example, the touch driving signal TP output through the sensing line SEN1 is used to drive the first touch area of the touch electrode layer 140. The touch driving signal TP output through the sensing line SEN2 is used to drive the touch electrode layer. The second touch area of 140. The position of the first touch area on the touch electrode layer 140 is different from the position of the second touch area on the touch electrode layer 140.

It should be added here that the relative spatial relationship of the components in Figure 1 is not limited to that shown in Figure 1. In addition, the disclosure does not limit the types of the switches M1 to M6 and the switches S1 to S4. Various transistors capable of realizing these switches are within the scope of consideration in the present disclosure. For example, the transistors are, for example, a bipolar junction transistor (BJT), a metal oxide semiconductor field effect transistor (MOSFET), or an insulated gate bipolar transistor (IGBT).

The operation of the touch display device 100 will be described in detail below. During the display of the touch display device 100, the buffer BUF1 of the display driver 132 outputs a display data signal DS with a positive polarity. The switches S1 and S3 are turned on, and the switches S2 and S4 are turned off. When the switch S1 is turned on, the switches M1 to M3 are sequentially turned on. Thereby, the display data signal DS will be transmitted to the data lines DL1 to DL3 through the switch S1, the common connection pad P1, and the switches M1 to M3. When the switch S3 is turned on, the switches M4 to M6 are sequentially turned on. Thereby, the display data signal DS will be transmitted to the data lines DL4 to DL6 through the switch S3, the common connection pad P2, and the switches M4 to M6.

When the polarity inversion occurs, the buffer BUF2 of the display driver 132 outputs a negative display data signal DS. The switches S2 and S4 are turned on, and the switches S1 and S3 are turned off. When the switch S2 is turned on, the switches M1 to M3 are sequentially turned on. Thereby, the display data signal DS will be transmitted to the data lines DL1 to DL3 through the switch S2, the common connection pad P1, and the switches M1 to M3. When switch S4 is turned on, switches M4 ~ M6 will follow The sequence is turned on. Thereby, the display data signal DS will be transmitted to the data lines DL4 to DL6 through the switch S4, the common connection pad P2, and the switches M4 to M6.

During the touch of the touch display device 100, the touch driver 134 outputs a touch driving signal TP. At this time, the switches S1 and S3 will be turned on. The switch S1 is turned on to transmit the touch driving signal TP to the common connection pad P1, so that the touch driving signal TP is transmitted to the first touch area of the touch electrode layer 140 through the sensing line SEN1. Then, the switch S3 is turned on to transmit the touch driving signal TP to the common connection pad P2, so that the touch driving signal TP is transmitted to the second touch area of the touch electrode layer 140 through the sensing line SEN2. During the touch period of the touch display device 100, the switches M1 to M6 are all turned off. Therefore, the touch driving signal TP is not transmitted to the display array 110 through the multiplexer 120a or 120b.

Please refer to Figure 2. FIG. 2 is a partial structural diagram of a touch display device 100 according to some embodiments of the disclosure. In other words, FIG. 2 illustrates a partial structure of the touch display device 100 of FIG. 1. In these embodiments, the touch electrode layer 140 is floating.

For example, the structure in FIG. 2 is a polarizer layer 202, a color filter layer 204, a liquid crystal layer 206, a touch electrode layer 140, and a driving transistor glass layer (TFT) in order from top to bottom. glass) 208 and polarizing layer 210. The touch electrode layer 140 includes a plurality of touch driving electrodes (Tx) and a plurality of touch sensing electrodes (Rx).

Please refer to Figure 3. FIG. 3 is a schematic diagram of a touch display device 300 according to some embodiments of the disclosure. For ease of understanding, similar elements in Figure 3 will be assigned the same reference numerals as in Figure 1.

The difference between the touch display device 300 in FIG. 3 and the touch display device 100 in FIG. 1 is that the touch display device 300 further includes a switch S5 and a switch S6. The switch S5 and the sensing line SEN1 are electrically connected between the node N1 and the touch electrode layer 140. The switch S6 and the sensing line SEN2 are electrically connected between the node N2 and the touch electrode layer 140. Specifically, the sensing line SEN1 includes a first line segment and a second line segment. The first line segment of the sensing line SEN1 is electrically connected between the node N1 and the first end of the switch S5. The second line segment of the sensing line SEN1 is electrically connected between the second end of the switch S5 and the touch electrode layer 140. The sensing line SEN2 includes a first line segment and a second line segment. The first line segment of the sensing line SEN2 is electrically connected between the node N2 and the first end of the switch S6. The second line segment of the sensing line SEN2 is electrically connected between the second end of the switch S6 and the touch electrode layer 140.

During the display of the touch display device 100, the switches S5 and S6 are turned off. Therefore, the display data signal DS is not transmitted to the touch electrode layer 140 through the sensing lines SEN1 and SEN2. During the touch of the touch display device 100, the switches S5 and S6 are turned on. Accordingly, the touch driving signal TP is transmitted to the touch electrode layer 140 through the sensing line SEN1, the sensing line SEN2, the switch S5, and the switch S6.

Please refer to Figure 4. FIG. 4 is a partial structural diagram of a touch display device 300 according to some embodiments of the disclosure. In other words, FIG. 4 illustrates a partial structure of the touch display device 300 of FIG. 3.

For example, the structure in FIG. 4 is a polarizing layer 402, a touch electrode layer 140, a filter layer 404, a liquid crystal layer 406, a driving transistor glass layer 408, and a polarizing layer 410 in order from top to bottom. The order of the layers in this diagram The preface is only for illustration, and this disclosure is not limited to this. For example, the touch electrode layer 140 may also be located between the filter layer 404 and the liquid crystal layer 406. In these embodiments, the touch electrodes of the touch electrode layer 140 are shared with the electrodes of the common voltage layer (Vcom). Since the touch electrodes of the touch electrode layer 140 and the electrodes of the common voltage layer (Vcom) are shared, the touch display device 400 needs to be equipped with a switch S5 and a switch S6, so that the touch electrode layer 140 can receive touches at corresponding times. Control signal and common voltage signal. In other words, by configuring the switches S5 and S6, the touch electrode layer 140 can separate the touch signal from the common voltage signal.

Please refer to Figure 5. FIG. 5 is a schematic diagram of a touch display device 500 according to some embodiments of the disclosure. For ease of understanding, similar elements in Figure 5 will be assigned the same reference numerals as in Figure 1.

In the touch display device 500, the sensing lines SEN1 to SEN6 are electrically connected to one of the data lines DL1 to DL6, respectively. Specifically, the sensing lines SEN1 to SEN6 and the data lines DL1 to DL6 are electrically connected in a one-to-one manner. The sensing lines SEN1 to SEN6 are further electrically connected to the touch electrode layer 140.

Next, please refer to Figure 5 and Figure 6 together. FIG. 6 is a timing diagram of a plurality of signals of the touch display device 500 of FIG. 5. The timing of FIG. 6 includes a display period DIS_TIME, a touch period TP_TIME1, and a touch period TP_TIME2.

Figure 6 shows the display data signal DS and the touch drive signal TP (bottom of Figure 6). During the display period DIS_TIME, the display driver 132 outputs a display data signal DS to implement a display function. During the touch period TP_TIME1 and touch period TP_TIME2, the touch driver 134 outputs The touch driving signal TP realizes the touch function.

FIG. 6 further shows the voltage signal waveforms of the scanning signals VG1 to VG3, the control signals MS1 to MS6, and the control signals SS1 to SS4. The above voltage signals have a logic level VGH (for example: a high logic level) and a logic level VGL (for example: a low logic level). In these embodiments, the driving transistor and each switch in the sub-pixel are implemented by an N-type transistor. Therefore, the enabling period of each voltage signal corresponds to the logic level VGH. Conversely, in some other embodiments, if the driving transistor and each switch in the sub-pixel are implemented by a P-type transistor, the enabling period of each voltage signal will be changed to correspond to the logic level VGL.

For the purpose of easy understanding, FIG. 6 illustrates a plurality of scanning signals VG1 to VG3, but this disclosure is not limited to this number. These scan signals VG1 to VG3 are included in the scan signals VG in FIG. 5. These scanning signals VG1 to VG3 are respectively used to control the conduction states of the driving transistors in each column of sub-pixels.

Specifically, the scan signal VG1 is transmitted to the first scan line SL1 electrically connected to the first row of sub-pixels. The scanning signal VG2 is transmitted to a second scanning line (not shown) electrically connected to the second row of sub-pixels. The scanning signal VG3 is transmitted to a third scanning line (not shown) electrically connected to the third row of sub-pixels. Taking the example in FIG. 6, the enabling period of the scanning signal VG1 is earlier in timing than the enabling period of the scanning signal VG2. The enabling period of the scanning signal VG2 is earlier in timing than the enabling period of the scanning signal VG3. In other words, the driving sequence of the driving transistors of the sub-pixels is the driving transistor of the first sub-pixel, the driving transistors of the second sub-pixel, and the driving of the third sub-pixel. Transistor.

It should be particularly noted that various scanning methods are within the scope of this disclosure, such as: forward scan, reverse scan, or other various scanning methods.

The control signals MS1 ~ MS6 in Fig. 6 are transmitted to the control terminals (eg, gate terminals) of the switches M1 ~ M6, respectively, to control the conducting states of the switches M1 ~ M6. In some embodiments, the control signal MS1 is the same as the control signal MS4. The control signal MS2 is the same as the control signal MS5. The control signal MS3 is the same as the control signal MS6. That is, when the switch M1 is turned on, the switch M4 is also turned on. When the switch M2 is turned on, the switch M5 is also turned on. When the switch M3 is turned on, the switch M6 is also turned on.

The control signals SS1 to SS4 in FIG. 6 are transmitted to the control terminals (eg, gate terminals) of the switches S1 to S4, respectively, to control the conduction states of the switches S1 to S4. Specifically, during the enabling period of the scanning signal VG1, the switch S1 is turned on according to the control signal SS1. Thereby, the display data signal DS is transmitted to the common connection pad P1 through the switch S1. At the same time, the switches M1 ~ M3 are sequentially turned on according to the control signals MS1 ~ MS3. As a result, the display data signal DS is transmitted to the data lines DL1 to DL3 through the switches M1 to M3. At this time, the liquid crystal capacitors in the sub-pixels R1, G1, and B1 are respectively charged to the corresponding voltage levels according to the display data signals DS from the data lines DL1 to DL3 to achieve the display function.

In addition, during the enabling period of the scanning signal VG1, the switch S3 is also turned on according to the control signal SS3. Thereby, the display data signal DS is transmitted to the common connection pad P2 through the switch S3. At the same time, switches M4 ~ M6 Will be turned on sequentially according to the control signals MS4 ~ MS6. With this, the display data signal DS will be transmitted to the data lines DL4 to DL6 through the switches M4 to M6. At this time, the liquid crystal capacitors in the sub-pixels R2, G2, and B2 are respectively charged to the corresponding voltage levels according to the display data signals DS from the data lines DL4 to DL6 to achieve the display function.

Since the scan signal VG2 and the scan signal VG3 have contents corresponding to the scan signal VG1, they are not described again here.

During the touch period TP_TIME1, the switch S1 is turned on according to the control signal SS1. As a result, the touch signal TP is transmitted to the common connection pad P1 through the switch S1. At the same time, the switches M1 ~ M3 are sequentially turned on according to the control signals MS1 ~ MS3. Accordingly, the touch signal TP is transmitted to the data lines DL1 to DL3 through the switches M1 to M3, and then transmitted to the touch electrode layer 140 through the sensing lines SEN1 to SEN3.

Similarly, during the touch period TP_TIME2, the switch S3 will be turned on according to the control signal SS3. As a result, the touch signal TP is transmitted to the common connection pad P2 through the switch S3. At the same time, the switches M4 ~ M6 are sequentially turned on according to the control signals MS4 ~ MS6. Accordingly, the touch signal TP is transmitted to the data lines DL4 to DL6 through the switches M4 to M6, and then transmitted to the touch electrode layer 140 through the sensing lines SEN4 to SEN6.

It should be noted that during the touch period TP_TIME1 and the touch period TP_TIME2, all the scanning signals correspond to the non-enabled period (disabled period). In other words, the voltage level of all the scanning signals is a low logic level (logic level VGL). In this case, the driving transistors of all sub-pixels are turned off, so the touch signal TP will not be transmitted to all sub-pixels. Liquid crystal capacitors in pixels.

It should be added that, because in these embodiments, the display data signal DS and the touch driving signal TP are positive polarity signals as examples. Therefore, the switch S2 is turned off according to the control signal SS2, and the switch S4 is turned off according to the control signal SS4.

In summary, in the touch display device of the present disclosure, the display driver and the touch driver respectively output the display data signal and the touch driving signal through a shared connection pad, so that the number of connection pads can be reduced and the routing the complexity. In addition, the area for configuring the connection pad can be saved.

Although this disclosure has been disclosed as above in the form of implementation, it is not intended to limit this disclosure. Any person with ordinary knowledge in the field can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, this disclosure The scope of protection shall be determined by the scope of the attached patent application.

100‧‧‧ touch display device

110‧‧‧display array

120a, 120b ‧ ‧ multiplexer

130‧‧‧Driver

132‧‧‧Display Driver

134‧‧‧Touch Driver

140‧‧‧Touch electrode layer

R1, R2, G1, G2, B1, B2 ‧‧‧ sub pixels

P1, P2‧‧‧shared connection pad

SL1‧‧‧scan line

DL1, DL2, DL3, DL4, DL5, DL6 ‧‧‧ data cable

SEN1, SEN2‧‧‧‧Induction line

M1, M2, M3, M4, M5, M6‧‧‧ switches

S1, S2, S3, S4‧‧‧ switches

DS‧‧‧Display data signal

TP‧‧‧Touch Drive Signal

VG‧‧‧Scan signal

N1, N2‧‧‧nodes

BUF1, BUF2‧‧‧Buffer

Claims (10)

A touch display device includes: a display array; a multiplexer electrically connected to the display array; a common connection pad electrically connected to the node with the multiplexer; and an induction line electrically connected to the node. Between a node and a touch electrode layer; and a driving chip electrically connected to the common connection pad, the driving chip includes: a display driver for cooperating with the common connection pad and the multiplexer to output a display data signal to The display array; and a touch driver for outputting a touch driving signal to the touch electrode layer in cooperation with the common connection pad and the sensing line. The touch display device according to item 1 of the scope of patent application, wherein the display driver includes: a first switch electrically connected between the touch driver and the common connection pad, and the first switch is used to be turned on The display data signal or the touch driving signal is transmitted to the shared connection pad. The touch display device according to item 2 of the scope of patent application, wherein the display array includes a plurality of data lines, and the multiplexer includes: a plurality of second switches, which are electrically connected to the node and the data lines, respectively. Between one of them; When the touch driver outputs the touch driving signal, the first switches are turned on and the second switches are turned off. The touch display device according to item 3 of the scope of patent application, wherein when the display driver generates the display data signal, the first switch is turned on and the second switches are turned on sequentially. The touch display device according to item 1 of the scope of the patent application, wherein the touch electrode layer is located on a common voltage layer, and the touch display device further includes a third switch electrically connected to the sensing line. Between the node and the touch electrode layer. A touch display device includes: a display array including a plurality of data lines; at least one multiplexer for electrically connecting the data lines; at least one shared connection pad for electrically connecting the at least one multiplexer; a plurality of A sensing line electrically connected between one of the data lines and a touch electrode layer; and a driving chip electrically connected to the at least one common connection pad, the driving chip includes: a display driver, Used to cooperate with the at least one shared connection pad and the at least one multiplexer to output a display data signal to the data lines; and A touch driver is used to cooperate with the at least one shared connection pad, the at least one multiplexer, the data lines, and the sensing lines to output a touch driving signal to the touch electrode layer. The touch display device according to item 6 of the scope of patent application, wherein the at least one common connection pad includes a first common connection pad and a second common connection pad, and the display driver includes: a first switch electrically connected Between the touch driver and the first common connection pad, the first switch is used to be turned on during a display period to transmit the display data signal to the first common connection pad, and is further used for a first touch Is switched on during the control period to transmit the touch driving signal to the first common connection pad; and a second switch is electrically connected between the touch driver and the second common connection pad, and the second switch is used for It is turned on during the display period to transmit the display data signal to the second shared connection pad, and is also turned on during a second touch period to transmit the touch driving signal to the second shared connection pad. The touch display device according to item 7 of the scope of patent application, wherein the at least one multiplexer includes: a first multiplexer electrically connected between the first common connection pad and the plurality of first data lines And a second multiplexer electrically connected between the second common connection pad and the plurality of second data lines. The touch display device according to item 8 of the scope of patent application, wherein the first multiplexer includes a plurality of third switches, and during the first touch, the third switches are sequentially turned on, so that The touch driving signals are transmitted to the plurality of first sensing lines through the first switch, the first common connection pad, the third switches, and the first data lines. The touch display device according to item 8 of the scope of patent application, wherein the second multiplexer includes a plurality of fourth switches, and during the second touch, the fourth switches are sequentially turned on, so that the The touch driving signals are transmitted to the plurality of second sensing lines through the second switch, the second shared connection pad, the fourth switches, and the second data lines.