TWI596526B - Embedded Touch Display Panel And Control Method Thereof - Google Patents

Description

In-cell touch display panel and control method thereof

The present invention relates to a display panel, and more particularly to an in-cell display panel and a control method therefor.

With the continuous optimization of the human-machine interface, the touch interface operation has formed a global trend. In recent years, the touch panel has been put on the display panel to enable the display panel to have both touch and display functions. Such a panel having both touch and display functions is generally referred to as a touch display panel.

The touch display panel can be classified into an on-cell and an in-cell depending on the structure and manufacturing method. Wherein, the on-cell touch display device has a touch sensor disposed on the back of the color filter (CF) substrate, and the in-cell is in-cell. The touch display device directly sets a touch sensor in a structure of a liquid crystal display (LCD).

However, since the conventional touch display panel needs to additionally provide a touch structure outside the display panel or in the structure thereof, the structure of the entire touch display panel is complicated and heavy.

In view of the above, the present invention provides an in-cell touch panel and a control method thereof, which utilize the existing architecture and time-sharing driving mode of the display panel to enable the display panel to have both touch and display functions.

In one embodiment, an in-cell touch display panel includes an active device array substrate, an opposite substrate, a pixel electrode layer, a common electrode layer, and a driving element. The active device array substrate includes a plurality of scan lines and a plurality of data lines, and the plurality of scan lines are interleaved on the plurality of data lines. The opposite substrate is disposed opposite to the active device array substrate. The pixel electrode layer is disposed on the active device array substrate. The common electrode layer is located between the active device array substrate and the opposite substrate. The common electrode layer includes a plurality of first common electrodes and a plurality of second common electrodes. The driving unit may electrically connect the pixel electrode layer to the plurality of data lines via the plurality of scan lines, and electrically connect the common electrode layer via the plurality of common lines. The driving unit can control the operation of the pixel electrode layer and the operation of the common electrode layer during the operation of the plurality of frames. The operation period of each frame has a plurality of display periods and a plurality of touch periods. During a complex display of each frame, the driving unit may output a complex data signal to the pixel electrode layer via the complex scan line and the complex data line, and drive the plurality of first common electrodes and the plurality of second common electrodes via the plurality of common lines to perform The screen of each frame is displayed. During a complex touch period of each frame, the driving unit may control the pixel electrode layer as a transmitter through the plurality of scan lines and the plurality of data lines, and detect touches from the plurality of first common electrodes via the plurality of the plurality of common lines Signal for touch sensing of each frame. The plurality of second common electrodes coupled to the remaining ones of the plurality of shared lines are in a dummy state.

In one embodiment, a method for controlling an in-cell touch display panel is suitable for performing screen display and touch sensing of a plurality of frames. The operation period of each frame has a plurality of display periods and a touch period. The control method of the in-cell touch display panel includes controlling a pixel electrode layer as a transmitter via a plurality of scan lines and a plurality of data lines during a plurality of touch periods of each frame, and a plurality of lines in the plurality of shared lines Detecting touch signals from the plurality of first common electrodes of the common electrode layer for touch sensing, and outputting complex data signals to the pixel electrodes via the plurality of scan lines and the plurality of data lines during the complex display of each frame The layer drives the plurality of first common electrodes and the plurality of second common electrodes via a common line to perform screen display. Wherein, in the complex touch period of each frame, the plurality of second common electrodes of the common electrode layer are in a dummy state.

In summary, the in-cell touch display panel and the method thereof are driven by a time division driving method, and the pixel electrodes are driven by the plurality of scan lines, the plurality of data lines, and the plurality of common lines during the display period. The layer and the common electrode layer are used for screen display, and the touch panel is used as a touch sensor by using a plurality of driving pixel electrodes and a common electrode layer in the plurality of scanning lines, the plurality of data lines, and the plurality of common lines during touch control. Sensing. As a result, the in-cell touch display panel of the embodiment of the invention does not need to additionally provide a touch structure inside or outside the display structure, thereby making the whole simpler and lighter.

The detailed features and advantages of the present invention are described in detail in the embodiments of the present invention. The objects and advantages associated with the present invention can be readily understood by those skilled in the art.

1 is a side view showing a structure of an in-cell touch display panel according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a connection between a pixel electrode layer and an active device array substrate. Referring to FIGS. 1 and 2 , the in-cell touch display panel 100 includes an active device array substrate 110 , a counter substrate 120 , a pixel electrode layer 130 , a common electrode layer 140 , and a driving unit 200 . The pixel electrode layer 130 , the common electrode layer 140 , and the opposite substrate 120 are sequentially disposed on the active device array substrate 110 , and the driving unit 200 is coupled to the active device array substrate 110 and the common electrode layer 140 . In other words, the active device array substrate 110 and the opposite substrate 120 are disposed opposite to each other, the pixel electrode layer 130 is disposed on the active device array substrate 110, and the common electrode layer 140 is located between the active device array substrate 110 and the opposite substrate 120.

The active device array substrate 110 may include one or more scan lines G1-G6, one or more data lines D1-D6, and one or more active elements 113. Hereinafter, the scanning lines G1-G6, the data lines D1-D6, and the active device 113 are all described in a plural form, but the present invention is not limited thereto. The plurality of active devices 113 are arranged in an array on the active device array substrate 110, and each active device 113 is coupled to the corresponding scan lines G1-G6 and the corresponding data lines D1-D6 to be in accordance with the corresponding scan lines G1-G6. The driver transmits the signal transmitted by the data lines D1-D6 to the pixel electrode layer 130.

The pixel electrode layer 130 is a light-transmitting conductive layer and covers the active device array substrate 110. The pixel electrode layer 130 may include a plurality of pixel electrodes 131 arranged in an array. In this case, each of the pixel electrodes 131 can be disposed according to the corresponding active component 113 and coupled to the corresponding active component 113 respectively.

The common electrode layer 140 is a light-transmitting conductive layer and is located between the active device array substrate 110 and the opposite substrate 120. In an embodiment, the common electrode layer 140 is disposed on the side of the opposite substrate 120. In other words, the common electrode layer 140 at this time is disposed on the opposite substrate 120 and disposed opposite to the pixel electrode layer 130, as shown in FIG. However, the invention is not limited thereto.

3 is a side view showing the structure of an in-cell touch display panel according to another embodiment of the present invention. Referring to FIG. 3, in another embodiment, the common electrode layer 140 is disposed on the side of the active device array substrate 110. In other words, the pixel electrode layer 130 and the common electrode layer 140 are sequentially stacked on the active device array substrate 110, and the common electrode layer 140 and the pixel electrode layer 130 are insulated from each other. In an embodiment, the common electrode layer 140 and the pixel electrode layer 130 may further include an insulating layer 160, and the insulating layer 160 may be used to partition the common electrode layer 140 and the pixel electrode layer 130.

The common electrode layer 140 includes a plurality of common electrodes (hereinafter, referred to as a first common electrode 141 and a second common electrode 142, respectively). In one embodiment, as shown in FIG. 2, the first common electrode 141 and the second common electrode 142, which are shown by dashed lines, may be strip electrodes, and the first common electrode 141 and the second common electrode 142 are parallel to the data. The direction of the line D1-D6 is set. However, the present invention is not limited thereto, and the first common electrode 141 and the second common electrode 142 may also be disposed in a direction parallel to the scanning lines G1-G6.

Here, the first common electrode 141 and the second common electrode 142 are staggered and spaced apart from each other. In other words, a first common electrode 141 may exist between two adjacent second common electrodes 142 (or a second common electrode 142 may exist between two adjacent first common electrodes 141). However, the present invention is not limited thereto, and a plurality of first common electrodes 141 may exist between the adjacent two second common electrodes 142.

In one embodiment, the size of the first common electrode 141 is substantially the same as the size of the second common electrode 142, and the width W1 of the first common electrode 141 is at least one times the width W2 of the pixel electrode 131. The pixel electrodes 131 of the same row may be located substantially in the projection of the first common electrode 141 on the active device array substrate 110. Here, the width W1 of the first common electrode 141 is at least twice the width W2 of the pixel electrode 131, and therefore, the pixel electrodes 131 located in the first row col1 and the second row col2 are located at the In the projection of the second common electrode 142 in the active device array substrate 110, the pixel electrodes 131 located in the third row col3 and the fourth row col4 are located in the projection of the first common electrode 141 on the active device array substrate 110, and The pixel electrodes 131 located in the fifth row col5 and the sixth row col6 are located in the projection of the second second common electrode 142 on the active device array substrate 110. However, the invention is not limited to this.

In another embodiment, the width of the first common electrode 141 is not the same as the width of the second common electrode 142, and the width of the first common electrode 141 is at least one times the width of the pixel electrode 131. For example, the width of the second common electrode 142 may be twice the width of the first common electrode 141, and the width of the first common electrode 141 is twice the width of the pixel electrode 131.

In one embodiment, the common electrode layer 140 may further include a plurality of common lines C1-C3, and the common lines C1-C3 are coupled to the first common electrode 141 and the second common electrode 142 one-to-one. Hereinafter, the common line C2 coupled to the first common electrode 141 may be referred to as a first common line group, and the common lines C1, C3 coupled to the second common electrode 142 may be referred to as a second common line group.

In an embodiment, the in-cell touch display panel 100 further includes a display medium layer 150 , and the display medium layer 150 is disposed between the active device array substrate 110 and the opposite substrate 120 . In one embodiment, the display medium contained in the display medium layer 150 may be a liquid crystal, and the display medium in the display medium layer 150 may be at an angle corresponding to the electric field deflection between the pixel electrode layer 130 and the common electrode layer 140. , by which the image is displayed.

The driving unit 200 is coupled to the plurality of scanning lines G1-G6, the plurality of data lines D1-D6, and the complex common lines C1-C3. In an embodiment, the driving unit 200 can include a first sub-driving module 210, a second sub-driving module 220, and a third sub-driving module 230. The first sub-drive module 210 is coupled to the scan lines G1-G6, the second sub-drive module 220 is coupled to the data lines D1-D6, and the third sub-drive module 230 is coupled to the common lines C1-C3. In some embodiments, the driving unit 200 can be implemented by integrating a circuit chip and mounted on a flexible wiring substrate (not shown), such as a flexible circuit board, to be wired on the flexible wiring substrate. Electrically connected to the complex scan lines G1-G6, the complex data lines D1-D6, and the complex common lines C1-C3.

During the operation of the plurality of frames of the in-cell touch display panel 100, the driving unit 200 can control the operation of the pixel electrode layer 130 through the scan lines G1-G6 and the data lines D1-D6, and pass through the common line C1. -C3 controls the operation of the common electrode layer 140. Here, the actuation period of each frame of the driving unit 200 may include one or more display periods and one or more touch periods. Hereinafter, description will be made of a plurality of display periods and a plurality of touch periods.

During the complex display period of each frame, the driving unit 200 can sequentially drive the active elements 113 connected thereto via the scan lines G1-G6, so that the data signals output by the driving unit 200 via the data lines D1-D6 can be The driving to the pixel electrode layer 130, and the driving unit 200 can output the common voltage signal to drive the first common electrode 141 and the second common electrode 142 via the common line C1-C3, so that the pixel electrode layer 130 and the common electrode layer 140 are An electric field can be formed to deflect the display medium in the display medium layer 150 to achieve a picture display.

During the multiple touch period of each frame, the driving unit 200 can drive the active device 113 connected thereto via the scan lines G1-G6, so that the driving signals output by the driving unit 200 via the data lines D1-D6 are enabled. The pixel electrode 130 can be transmitted to the pixel electrode layer 130 to control the pixel electrode layer 130 as a transmitter for touch sensing, and the driving unit 200 can control the first common electrode 141 as a touch sensing device via the first common line group. The receiver detects the touch signal from the first common electrode 141 to achieve touch sensing. The second common electrode 142 coupled to the second common line group is in a dummy state at this time. In other words, the second common electrode 142 does not operate during each touch period of each frame.

FIG. 5 is a schematic diagram of a pixel electrode layer during touch. Referring to FIG. 5, in each touch period of each frame, a plurality of adjacent pixel electrodes 131 in the pixel electrode layer 130 may constitute one pixel used as a transmitter. For example, each of the pixels P11-P16 in the pixel electrode layer 130 may be composed of (2*3) pixel electrodes 131. However, the present invention is not limited thereto, and the number of pixel electrodes 131 covered by each pixel P11-P16 may depend on the size of the sensing area of each design unit.

In one embodiment, as shown in FIG. 4, the pixel electrode layer 130 can be regarded as an array of a plurality of pixels P11-P16 in an array during each touch period of each frame. Here, the pixel P11, the pixel P12 and the pixel P13 are located in the first column row'1, the pixel P14, the pixel P15 and the pixel P16 are located in the first column row'2, and each pixel P11-P16 is It is a sensing unit of the in-cell touch display panel 100.

The plurality of pixels P11-P16 of the pixel electrode layer 130 may be divided into one or more first pixel groups and one or more second pixel groups, and the first pixel group and the second pixel group are staggered with each other. Here, the first pixel group or the second pixel group is configured by a plurality of pixels located in the same row. For example, the plurality of pixels P11 and P14 of the first row col'1 may be the first first pixel group Sp11, and the plurality of pixels P12 and P15 of the second row col'2 may be used as the second. The pixel group Sp21, and the plurality of pixels P13, P16 located in the third line col'3 are used as the second first pixel group Sp12.

In one embodiment, the first pixel groups Sp11 and Sp12 of the pixel electrode layer 130 are disposed corresponding to the second common electrode 142 of the common electrode layer 140, and the second pixel group Sp21 of the pixel electrode layer 130 is The first common electrode 141 corresponding to the common electrode layer 140 is disposed such that in the touch period of each frame, the first pixel group Sp11, Sp12 used as a transmitter and the first common electrode 141 used as a receiver are used. The vertical projections do not overlap each other, thereby reducing the parasitic capacitance between the first pixel groups Sp11, Sp12 and the first common electrode 141, but the invention is not limited thereto. In another embodiment, the first pixel groups Sp11, Sp12 and the first common electrode 141 may partially overlap on the vertical projection, thereby generating appropriate parasitic capacitance to avoid the touch of the in-cell touch display panel 100. Control sensing is too sensitive.

Hereinafter, all the data lines D1, D2, D5, and D6 coupled to the first pixel group may be collectively referred to as a first data line group, and all data lines D3 and D4 coupled to the second pixel group may be collectively referred to as a first Two data line groups.

In an embodiment of the touch period of each frame, the driving unit 200 can drive the first pixel groups Sp11 and Sp12 as the transmitter for performing touch sensing via the first data line group and the scan lines G1-G6. And the second pixel electrode group Sp21 is not driven via the second data line group and the scanning lines G1-G6. In other words, the second pixel electrode group Sp21 coupled to the second data line group at this time will assume a dummy state.

FIG. 6 is a timing diagram of the signal outputted by the driving unit of the first embodiment via the scan line and the data line during the operation of each frame. Referring to FIG. 1 to FIG. 6 , in the following, each display period includes two display periods (hereinafter referred to as a first display period Td1 and a second display period Td2, respectively) and two touch periods (hereinafter referred to as respectively). The first touch period Tt1 and the second touch period Tt2) are described as an example, but the number of display periods and touch periods is not limited thereto. In addition, the following is a description of the interleaving sequence of performing touch sensing and then performing screen display, but the order of execution is not limited thereto.

In some implementations, the lengths of the first touch period Tt1 and the second touch period Tt2 of each frame are substantially greater than the lengths of the first display period Td1 and the second display period Td2, but the invention is not limited thereto. The lengths of the first touch period Tt1 and the second touch period Tt2 of each frame may be substantially the same as the lengths of the first display period Td1 and the second display period Td2.

In the first touch period Tt1, the driving unit 200 can output the driving element to the active element 113 of the pixels P11-P13 connected thereto through the scanning lines G1-G3, and output the data signal to the drawing through the first data line group. The pixels P11 and P13 are used to drive the pixels P11 and P13 located in the first column row'1 as the emitter for touch sensing, and the driving unit 200 detects the first common electrode 141 through the first common line group. The touch signal is displayed, so that the in-cell touch display panel 100 can perform touch sensing in the first touch period Tt1.

In the first display period Td1, the driving unit 200 can sequentially output the driving signals through the scanning lines G1-G3 applied in the first touch period Tt1 to turn on the pixels P11-P13 connected thereto. The active component 113 outputs the data signal to the pixels P11-P13 located in the first column row'1 through all the data lines D1-D6 (ie, the first data line group and the second data line group), and is coupled with the driving unit 200. All the common lines C1-C3 output the common voltage signal to drive the first common electrode 141 and the second common electrode 142 to form an electric field between the pixel electrode layer 130 and the common electrode layer 140, so that the in-cell touch display panel 100 The screen display can be performed in the first display period Td1.

Then, in the second touch period Tt2, the driving unit 200 can output the driving signal to the active element 113 of the pixels P14-P16 connected thereto through the scanning lines G4-G6, and output the data signal through the first data line group. The pixels P14 and P16 located in the row '2 of the second column are used to drive the pixels P14 and P16 as the emitters for touch sensing, and cooperate with the driving unit 200 to detect the first common electrode through the first common line group. The touch signal of the 141 enables the in-cell touch display panel 100 to perform touch sensing in the second touch period Tt2.

Finally, in the second display period Td2, the driving unit 200 can sequentially output the driving signals through the scanning lines G4-G6 applied in the second touch period Tt2 to turn on the active pixels P14-P16 connected thereto. The component 113 transmits the data signal through all the data lines D1-D6 to the pixels P14-P16 located in the second column row'2, and the driving unit 200 outputs the common voltage signal through all the common lines C1-C3 to drive the first common electrode. 141 and the second common electrode 142 form an electric field between the pixel electrode layer 130 and the common electrode layer 140, so that the in-cell touch display panel 100 can perform screen display in the second display period Td2.

Therefore, the in-cell touch display panel 100 can complete the screen display and touch of each frame through the repeated first touch period Tt1, the first display period Td1, the second touch period Tt2, and the second display period Td2. Control sensing.

Here, it should be noted that in the first touch period Tt1 and the second touch period Tt2, the second pixel electrode group Sp21 (ie, pixels P12, P15) does not operate, but presents a dummy state.

In one embodiment, the driving signal output by the driving unit 200 via the scanning lines G1-G3 during the first touch period Tt1 is a synchronous communication number, and the scanning line G4-G6 is used during the second touch period Tt2. The output driving signal is also a synchronous communication number. In other words, all of the active elements 113 in the pixels P11 and P13 are substantially simultaneously driven in the first touch period Tt1, and all the active elements 113 in the pixels P14 and P16 are substantially in the first touch period Tt1. It is driven at the same time.

In addition, the driving signal outputted by the driving unit 200 via the scanning lines G1-G3 during the first display period Td1 is an asynchronous communication number, and the driving signal outputted by the scanning lines G4-G6 during the second display period Td2 is also It is an asynchronous communication number. In other words, all the active elements 113 located in different columns in the pixels P11-P13 are driven at different time points in the first display period Td1, and all the active elements 113 located in different columns in the pixels P14-P16 are Different time points in the second display period Td2 are driven. Herein, the scanning lines G1-G3 are driving signals that do not overlap each other during the conduction period, and the scanning lines G4-G6 are driving signals that do not overlap each other during the conduction period, but the invention is not limited thereto.

FIG. 7 is a timing diagram of the driving unit outputting signals through the scan lines and the data lines during the operation of the odd frames in the second embodiment, and FIG. 8 is the driving unit of the second embodiment via the scan lines during the operation of the even frames. Schematic diagram of the data line output signal. Referring to FIG. 1 to FIG. 8 , in an embodiment, the driving unit 200 can drive each column of the pixels P11-P16 to perform screen display and selectively perform touch sensing during the operation of each frame. . In the following, since the driving manners of the first display period Td1 and the second display period Td2 of each frame are substantially the same as those of the previous embodiment, the description will not be repeated below, and only the first touch period Td1 and the second touch will be described. Control period Td2.

For example, the driving unit 200 can drive only the pixel electrodes 131 of the odd columns of the first pixel electrode groups Sp11 and Sp12 in the first touch period Td1 and the second touch period Td2 of each odd frame. Controlling the sensing, and in the first touch period Td1 and the second touch period Td2 of each even frame, the pixel electrodes 131 of the even columns of the first pixel electrode groups Sp11 and Sp12 are driven to perform touch sensing. .

Actually

The driving unit 200 can output the driving signal through the scanning lines G1 and G3 in the first touch period Td1 of each odd frame in the first column row'1 pixels P11-P13 in the first column row1 and the third column row3. The active component 113 outputs the data signal through the first data line group to the pixels P11 and P13 located in the first column row'1 to drive the pixel pixels P11 and P13 in the first column row1 and the third column row3. The pixel electrode 131 serves as a transmitter for touch sensing, and cooperates with the driving unit 200 to detect the touch signal from the first common electrode 141 through the first common line group to perform the first touch period of each odd frame. Touch sensing of Td1. Moreover, in the second touch period Td2 of each odd frame, the driving unit 200 further outputs the driving signal to the active element 113 located in the fifth column row5 among the pixels P14-P16 of the second column row'2 through the scan line G5. And outputting the data signal through the first data line group to the pixels P14 and P16 located in the second column row'2, and driving the pixel electrodes 131 located in the fifth column row5 of the pixels P14 and P16 as the touch sensing. And transmitting, by the driving unit 200, the touch signal from the first common electrode 141 through the first common line group to perform touch sensing of the second touch period Td2 of each odd frame.

When the frame is in an even frame, the driving unit 200 can output the driving signal through the scanning line G2 during the first touch period Td1 to turn on the active device 113 located in the second column row2 of the first column row'1 pixels P11-P13, and pass through The first data line group outputs the data signal to the pixels P11 and P13 located in the first column row'1, and drives the pixel electrodes 131 located in the second column row2 of the pixels P11 and P13 as the emitter for touch sensing. And the driving unit 200 detects the touch signal from the first common electrode 141 through the first common line group to perform touch sensing of the first touch period Td1 of each even frame. In the second touch period Td2, the driving unit 200 further outputs the driving signals to the fourth column row4 and the sixth column row6 in the pixels P14-P16 of the second column row'2 through the scan lines G4 and G6. The component 113 transmits the data signal through the first data line group to the pixels P14 and P16 located in the second column row'2 to drive the pixel electrodes in the fourth column row4 and the sixth column row6 of the pixels P14 and P16. The 131 is used as a transmitter for touch sensing, and cooperates with the driving unit 200 to detect the touch signal from the first common electrode 141 through the first common line group to perform the touch of the second touch period Td2 of each even frame. Control sensing.

However, the present invention is not limited thereto. In another embodiment, the driving unit 200 can drive only the first pixel electrode in the first touch period Td1 and the second touch period Td2 of each odd frame. The pixel electrodes 131 of the even-numbered columns of the Sp11 and the Sp12 are touch-sensed, and the first pixel electrode group Sp11 is driven in the first touch period Td1 and the second touch period Td2 of each even frame. The pixel electrode 131 of the odd column in Sp12 performs touch sensing. Since the detailed operation of this embodiment can be referred to the front, it will not be described herein.

Here, it should be noted that in the first touch period Tt1 and the second touch period Tt2 of each frame, the second pixel electrode group Sp21 (ie, pixels P12, P15) is also not activated, and is presented. Dummy state.

FIG. 8 is a timing diagram of the signal outputted by the driving unit of the third embodiment via the scan line and the data line during the operation of each frame. Referring to FIG. 1 to FIG. 8 , in an embodiment, the driving unit 200 can drive all the pixels of each column of the pixels P11-P16 for screen display and touch sensing during the operation of each frame.

For example, the driving unit 200 can output the driving signals through the scanning lines G1-G3 in the first touch period Td1 of each frame to turn on all the active elements 113 located in the first column L'1 pixels P11-P13, and pass through The data lines D1-D6 output the data signals to the pixels P11-P13 to drive all the pixel electrodes 131 in the pixels P11-P13 as the emitters for touch sensing, and cooperate with the driving unit 200 to pass through the first common line group. The touch signal from the first common electrode 141 is detected to perform touch sensing of the first touch period Td1 of each frame. Moreover, in the second touch period Td2 of each frame, the driving unit 200 further outputs the driving signals through the scanning lines G4-G6 to turn on all the active elements 113 in the pixels P14-P16 in the second column row'2, and transmits the data. The line D1-D6 outputs the data signal to the pixels P14-P16 to drive all the pixel electrodes 131 in the pixels P14 and P16 as the emitter for touch sensing, and cooperate with the driving unit 200 to detect through the first common line group. The touch signal from the first common electrode 141 is used for touch sensing of the second touch period Td2 of each odd frame.

FIG. 9 is a timing diagram of the driving unit outputting signals via the scan lines and the data lines during the operation of the odd frames in the fourth embodiment, and FIG. 10 is the driving unit of the fourth embodiment via the scan lines during the operation of the even frames. Schematic diagram of the data line output signal. Referring to FIG. 1 to FIG. 10, the driving unit 200 can drive the first pixel electrode group Sp11 in the first touch period Td1 and the second touch period Td2 of each odd frame, compared with the second embodiment. All the pixel electrodes 131 of the odd-numbered columns of the Sp12 and the second pixel electrode group Sp21 are touch-sensed, and are driven first in the first touch period Td1 and the second touch period Td2 of each even frame. All of the pixel electrodes 131 of the even-numbered columns of the pixel electrode groups Sp11 and Sp12 and the second pixel electrode group Sp21 perform touch sensing.

For example, in the first touch period Td1 of each odd frame, the driving unit 200 can output the driving signal through the scan lines G1 and G3 in the first column row'1 pixels P11-P13 in the first column row1 and All the active elements 113 of the third row row3, and output data signals to the pixels P11-P13 through the data lines D1-D6, to drive all the pixels in the first column row1 and the third column row3 of the pixel pixels P11-P13. The electrode 131 serves as a transmitter for touch sensing, and cooperates with the driving unit 200 to detect the touch signal from the first common electrode 141 through the first common line group to perform the first touch period Td1 of each odd frame. Touch sensing. Moreover, in the second touch period Td2 of each odd frame, the driving unit 200 further outputs all the active components in the fifth column row5 of the pixels P14-P16 located in the second column row'2 through the scan line G5. 113, and output the data signal to the pixels P14-P16 through the data lines D1-D6 to drive all the pixel electrodes 131 in the fifth column row5 of the pixels P14-P16 as the emitter for touch sensing, and cooperate with The driving unit 200 detects the touch signal from the first common electrode 141 through the first common line group to perform touch sensing of the second touch period Td2 of each odd frame.

When the frame is in an even frame, the driving unit 200 can output the driving signal through the scanning line G2 during the first touch period Td1 to turn on all the active elements 113 located in the second column row2 of the first column row'1 pixels P11-P13, and The data signals D1-D6 are outputted to the pixels P11-P13 to drive all the pixel electrodes 131 in the second column row2 of the pixels P11 and P13 as the emitters for touch sensing, and cooperate with the driving unit 200. The touch signal from the first common electrode 141 is detected through the first common line group to perform touch sensing of the first touch period Td1 of each even frame. Moreover, in the second touch period Td2, the driving unit 200 outputs the driving signals through the scan lines G4 and G6 to turn on all the pixels in the fourth column row4 and the sixth column row6 in the pixels P14-P16 in the second column row'2. The active component 113 outputs the data signal to the pixels P14-P16 through the data lines D1-D6 to drive all the pixel electrodes 131 in the fourth column row4 and the sixth column row6 of the pixels P14-P16 as touch sensing. The transmitter is used, and the touch signal from the first common electrode 141 is detected by the driving unit 200 through the first common line group to perform touch sensing of the second touch period Td2 of each even frame.

However, the present invention is not limited thereto. In another embodiment, the driving unit 200 can drive only the first pixel electrode in the first touch period Td1 and the second touch period Td2 of each odd frame. The even-numbered pixel electrodes 131 in the group of Sp11, Sp12 and the second pixel electrode group Sp21 are touch-sensed, and are driven in the first touch period Td1 and the second touch period Td2 of each even frame. The pixel electrodes 131 of the odd-numbered columns of the first pixel electrode group Sp11, Sp12 and the second pixel electrode group Sp21 perform touch sensing. Since the detailed operation of this embodiment can be referred to the front, it will not be described herein.

In the foregoing, it should be noted that in the first touch period Tt1 and the second touch period Tt2, the driving unit 200 drives each pixel P11-P16 as a sensing unit, but this is driven. The invention is not limited thereto. In another embodiment, the driving unit 200 also drives each of the pixel electrodes 131 as a sensing unit. In the case of six columns, the duration of each frame can include three touch times. In this case, the driving unit 200 can drive the corresponding odd-numbered columns of pixel electrodes 131 for touch sensing during each touch period of each odd frame, for example, driving the pixels of the first column row1 during the first touch period. The electrode 131 drives the pixel electrodes 131 of the third column row3 during the second touch period, and drives the pixel electrodes 131 of the fifth column row5 during the third touch period to perform touch sensing. In each of the even frames, the driving unit 200 can drive the corresponding even-numbered columns of pixel electrodes 131 for touch sensing during each touch period, for example, driving the second column row2 during the first touch period. The pixel electrode 131 drives the pixel electrodes 131 of the fourth column row4 during the second touch period, and drives the pixel electrodes 131 of the sixth column row6 during the third touch period to perform touch sensing.

In summary, the in-cell touch display panel and the method thereof are driven by a time division driving method, and the pixel electrodes are driven by the plurality of scan lines, the plurality of data lines, and the plurality of common lines during the display period. The layer and the common electrode layer are used for screen display, and the touch panel is used as a touch sensor by using a plurality of driving pixel electrodes and a common electrode layer in the plurality of scanning lines, the plurality of data lines, and the plurality of common lines during touch control. Sensing. As a result, the in-cell touch display panel of the embodiment of the invention does not need to additionally provide a touch structure inside or outside the display structure, thereby making the whole simpler and lighter.

The technical contents of the present invention have been disclosed in the preferred embodiments as described above, and are not intended to limit the present invention. Any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention should be The scope of the invention is therefore defined by the scope of the appended claims.

100‧‧‧In-cell touch display panel

110‧‧‧Active component array substrate

113‧‧‧Active components

120‧‧‧ opposite substrate

130‧‧‧pixel electrode layer

131‧‧‧pixel electrodes

140‧‧‧Common electrode layer

141‧‧‧First common electrode

142‧‧‧Second common electrode

150‧‧‧ Display media layer

160‧‧‧Insulation

200‧‧‧ drive unit

210-230‧‧‧Drive Module

C1-C3‧‧‧ shared line

D1-D6‧‧‧ data line

G1-G6‧‧‧ scan line

Row1-row6‧‧‧column

Row’1-row’2‧‧‧

P11-P16‧‧‧ pixels

Col1-col6‧‧‧

Col’1-col’3‧‧‧

Sp11, Sp12‧‧‧ first pixel electrode group

Sp21‧‧‧Second pixel electrode group

Td1‧‧‧First display period

Td2‧‧‧second display period

Tt1‧‧‧First touch period

Tt2‧‧‧second touch period

1 is a side view showing the structure of an in-cell touch display panel according to an embodiment of the invention. 2 is a schematic view showing a schematic relationship between a pixel electrode layer, a common electrode layer, and an active device array substrate and a driving unit. FIG. 3 is a side view showing a structure of an in-cell touch display panel according to another embodiment of the present invention. FIG. 4 is a schematic diagram showing a pixel electrode layer during touch. [Fig. 5] is a timing chart showing the output of the signal by the driving unit of the first embodiment via the scanning line and the data line during the operation of each frame. [Fig. 6] is a timing chart showing the output of the signal by the driving unit of the second embodiment via the scanning line and the data line during the operation of the odd frame. 7 is a timing chart showing the output of the drive unit of the second embodiment via the scan line and the data line during the operation of the even frame. FIG. 8 is a timing chart showing the output of the signal by the driving unit of the third embodiment via the scanning line and the data line during the operation of each frame. 9 is a timing chart showing the output of the signal by the driving unit of the fourth embodiment via the scanning line and the data line during the operation of the odd frame. FIG. 10 is a timing chart showing the output of the signal by the driving unit of the fourth embodiment via the scanning line and the data line during the operation of the even frame.

D1-D6‧‧‧ data line

G1-G6‧‧‧ scan line

Td1‧‧‧First display period

Td2‧‧‧second display period

Tt1‧‧‧First touch period

Tt2‧‧‧second touch period

Claims (20)

An in-cell touch display panel includes: an active device array substrate, including at least one scan line and at least one data line, and the at least one scan line is interleaved with the at least one data line; a pair of substrates, and the active The component array substrate is oppositely disposed; a pixel electrode layer is disposed on the active device array substrate; a common electrode layer is disposed between the active device array substrate and the opposite substrate, and includes at least one first common electrode and at least one a second common electrode; and a driving unit electrically connecting the pixel electrode layer to the at least one data line via the at least one scan line and electrically connecting the common electrode layer via the plurality of common lines, and controlling during operation of the plurality of frames The operation of the pixel electrode layer and the operation of the common electrode layer, wherein the actuation period of each frame has at least one display period and at least one touch period; wherein, during the at least one display period of each of the frames, The driving unit outputs at least one data signal to the pixel electrode layer via the at least one scan line and the at least one data line, and drives through the complex shared line The at least one first common electrode and the at least one second common electrode are configured to perform screen display of the frame; wherein, during the at least one touch period of each frame, the driving unit passes the at least one scan line and the The at least one data line controls the pixel electrode layer as a transmitter, and detects a touch signal from the at least one first common electrode via at least one of the at least one common line to perform touch sensing on the frame And the at least one second common electrode coupled to the remaining one of the plurality of common lines is in a dummy state. The in-cell touch display panel of claim 1, wherein the pixel electrode layer comprises a plurality of pixels, each of the pixels comprises a plurality of pixel electrodes, and the plurality of pixels are divided into at least one first of the interlaced pixels. The pixel group and the at least one second pixel group, the number of the at least one data line is plural, the at least one scan line is a plurality, and the driving unit is during the at least one touch period of each frame Driving the at least one first pixel electrode group as the emitter through one of the plurality of data lines and the plurality of scan lines, and coupling one of the plurality of data lines to the second data line group The at least one second pixel electrode group is in a dummy state. The in-cell touch display panel of claim 2, wherein the driving unit drives each column of the plurality of pixels during the actuation of the frame, so that the column of pixels displays the image and The touch sensing is selectively performed. The in-cell touch display panel of claim 3, wherein the driving unit drives the odd-numbered column pixel electrodes in the at least one first pixel electrode group during the at least one touch period of each odd number of the frames The touch sensing, and during each of the at least one touch of the even number of frames, the driving unit drives the even-numbered column of pixels in the at least one first pixel group to perform the touch sensing. The in-cell touch display panel of claim 3, wherein the display unit is configured to display the column of pixels for the touch sensing, and the driving unit drives the column of pixels to perform the touch sensing. Then, drive the column of pixels to display the screen. The in-cell touch display panel of claim 2, wherein the at least one first pixel electrode group is disposed corresponding to the at least one second common electrode, and the at least one second pixel electrode group corresponds to the at least one second pixel electrode group A first common electrode is provided. The in-cell touch display panel of claim 1, wherein the pixel electrode layer comprises a plurality of pixels, each of the pixels comprises a plurality of pixel electrodes, and the driving unit is during the actuation of each frame. Driving each column of pixels in the complex pixel, causing the column of pixels to perform the display of the picture and selectively performing the touch sensing. The in-cell touch display panel of claim 7, wherein the driving unit drives the odd-numbered column of pixels in the plurality of pixels for the touch sensing during the at least one touch period of each odd number of frames And driving, during each of the at least one touch period of the even number of the frames, driving the even-numbered pixel electrodes in the plurality of pixels to perform the touch sensing. The in-cell touch display panel of claim 7, wherein the display unit is configured to display the column of pixels in the touch sensing, and the driving unit drives the column of pixels to perform the touch sensing. Then, drive the column of pixels to display the screen. The in-cell touch display panel of claim 1, wherein the pixel electrode layer comprises a plurality of pixel electrodes, and the driving unit drives the plurality of pixels during each of the at least one touch of each odd frame The odd-numbered pixel electrodes in the electrode perform the touch sensing, and during each of the at least one touch of the even-numbered frame, the driving unit drives the even-numbered pixel electrodes in the plurality of pixel electrodes to perform the touch sensing . The in-cell touch display panel according to any one of claims 1 to 10, wherein the common electrode layer is disposed on the opposite substrate or on the pixel electrode layer. The control method of the in-cell touch display panel is adapted to perform screen display and touch sensing of a plurality of frames, wherein each of the frames has at least one display period and at least one touch period during the actuation period, the in-line type The control method of the touch display panel includes: During the at least one touch period of each frame, a pixel electrode layer is controlled as a transmitter via at least one scan line and at least one data line, and at least one of the plurality of common lines is detected from a common electrode layer. a touch signal of the at least one first common electrode for performing the touch sensing, wherein at least one second common electrode of the common electrode layer is in a dummy state; and during the at least one display period of each frame, The at least one scan line and the at least one data line output at least one data signal to the pixel electrode layer, and the at least one first common electrode and the at least one second common electrode are driven through the plurality of common lines to perform the screen. display. The control method of the in-cell touch display panel according to claim 12, wherein the pixel electrode layer comprises a plurality of pixels, each of the pixels comprises a plurality of pixel electrodes, and the plurality of pixels are divided into at least one of the interlaced pixels. a pixel group and a second pixel group, wherein the number of the at least one data line is a plurality, and the number of the at least one scan line is a plurality, wherein the controlling step of the pixel electrode layer comprises: a first data line group of the line and the plurality of scan lines driving the at least one first pixel electrode group as the transmitter, and the at least one of the plurality of data lines in which the second data line group is coupled The two-pixel electrode group is in a dummy state. The control method of the in-cell touch display panel according to claim 13, wherein during the actuation of each frame, each column of the plurality of pixels is driven to perform the screen display and selectively perform The touch sensing. The control method of the in-cell touch display panel according to claim 13 or 14, wherein the driving step of the at least one first pixel electrode group includes driving during the at least one touch period of each odd number of the frames The odd-numbered pixel electrodes in the at least one first pixel group to perform the touch sensing, and the at least one touch during each of the even-numbered touches of the frame The driving step of the element electrode group includes driving an even number of column pixel electrodes in the at least one first pixel electrode group to perform the touch sensing. The control method of the in-cell touch display panel according to claim 14, wherein the column of pixels displayed on the screen and the touch sensing is driven by the touch sensing, and then connected It is driven to display this screen. The control method of the in-cell touch display panel of claim 12, wherein the pixel electrode layer comprises a plurality of pixels, each of the pixels comprises a plurality of pixel electrodes, and during the actuation of each frame, Each column of pixels in the plurality of pixels is driven to perform the display of the picture and selectively perform the touch sensing. The control method of the in-cell touch display panel of claim 17, wherein the controlling step of the pixel electrode layer is included in the plurality of scan lines during the at least one touch period of each odd number of frames a first scan line group and the plurality of data lines driving the odd-numbered column pixel electrodes of the plurality of pixels as the emitter for performing the touch sensing, and during the at least one touch of the even number of the frames, the pixel The controlling step of the electrode layer includes driving the even-numbered sub-pixel electrodes of the plurality of pixels through one of the plurality of scan lines and the plurality of data lines to perform the touch sensing. The control method of the in-cell touch display panel according to claim 17, wherein the column of pixels displayed on the screen and the touch sensing is driven by the touch sensing, and then connected It is driven to display this screen. The control method of the in-cell touch display panel according to claim 12, wherein the pixel electrode layer comprises a plurality of pixel electrodes during the at least one touch period of each odd number of the frames, The controlling step of the pixel electrode layer includes driving the odd-numbered column pixel electrodes of the plurality of pixel electrodes as the emitter through the first scan line group of the plurality of scan lines and the complex data line to perform the touch sensing And controlling, during the at least one touch period of the even number of the frames, the controlling step of the pixel electrode layer comprises driving an even number of the plurality of pixel electrodes via one of the plurality of scan lines and the plurality of data lines The pixel electrodes are arranged to perform the touch sensing.