TWI629625B - In-cell touch display device - Google Patents

Abstract

The present disclosure provides an in-cell touch display device. Wherein, an in-cell touch display panel has a plurality of gate lines. A display controller drives the plurality of gate lines to perform a display operation of the display frame. A plurality of touch sensing electrodes are arranged in a matrix to perform touch sensing. A touch controller is connected to the plurality of touch sensing electrodes for touch detection. The display time of the display frame is divided into a plurality of display time slots and a plurality of non-display time slots. Each of the gate lines is driven by the display controller during a driving time of a display time slot. Each column of touch sensing electrodes corresponds to K gate lines, and the driving time of each group of K gate lines forms a The time slot is selected, and a plurality of the selectable time slots are selected as the start time of the plurality of non-display time slots, where K is a positive integer.

Description

In-cell touch display device

The disclosure relates to the technical field of a touch display device, and more particularly to an in-cell touch display device.

The competition in the handheld device market is becoming increasingly fierce. Therefore, many functions have been added to the design of handheld devices, such as touch detection. The prior art is to attach the touch layer to the display panel of the handheld device. FIG. 1 is a schematic diagram of a conventional touch detection and display operation. As shown in the figure, in the frame 1 (Frame I), a display controller (not shown) suspends driving the 111th gate line after driving the 110th gate line. A high potential of G1 indicates that the first gate line is driven, and a high potential of Gn indicates that the nth gate line is driven. When the display touch switching instruction signal LCD_Busy is at a high level, it indicates that the gate line is driven, that is, when the display touch switching instruction signal LCD_Busy is at a high level, the gate line can continue to be driven. On the other hand, when the display touch switching instruction signal LCD_Busy is at a low level, the driving of the gate line is suspended. A touch controller (not shown) drives a touch detection drive signal Tx to a high potential or a continuous pulse to perform touch detection.

After the elapse of time T1, the display touch switching indication signal LCD_Busy will switch to a high potential, indicating that the gate line can continue to be driven. For example, the display controller continues to drive the 111th gate line, and the touch controller stops driving. The touch detection drive signal Tx. After the elapse of time T2, the display touch switching indication signal LCD_Busy is changed to a low level, indicating that the driving of the gate line is suspended. For example, the display controller suspends driving the nth gate line, and the touch controller drives the touch. The driving signal Tx is detected to be high, so that the touch detection is continuously performed.

As shown in FIG. 1 , when the display touch switching instruction signal LCD_Busy is at a high level, it indicates that the display controller drives the gate line to perform a display operation, so the time when the display touch switching instruction signal LCD_Busy is at a high potential is called display. Time slot T _D . When the display touch switching instruction signal LCD_Busy is at a low level, it indicates that the display controller pauses the gate line control, and the display operation is not performed at this time, so the time when the touch switch instruction signal LCD_Busy is at a low level is called a non-display time slot. T _N . As shown by the ellipse A of FIG. 1, when the display touch switching instruction signal LCD_Busy is turned from a high level to a low level and then from a low level to a high level, a pit is formed. When the display touch switching indication signal LCD_Busy changes from high potential to low potential, it means that the driving of the gate line is paused. The industry generally can be called into the pit. When the display touch switching indication signal LCD_Busy stays at a low potential and performs touch detection, The industry generally refers to the stop pit. When the display touch switching indication signal LCD_Busy changes from low potential to high potential, it means that the gate line is continuously driven. The industry generally can be called a pit.

However, when the next display frame (Frame I+1), if it is still driven into the pit after driving the same gate line, it will behave differently from other gate lines in the vicinity of the gate line at the pit position, and it is easy to enter the pit. The position of the gate line and the nearby gate line appear to show horizontal stripes. Furthermore, if a fixed gate line enters the pit, it is easy to cause stress on the gate driving circuit to cause a display horizontal streak. Therefore, there is still room for improvement in the conventional in-cell touch display device.

The purpose of the disclosure is mainly to provide an in-cell touch display device, which can avoid the occurrence of horizontal stripes on the touch display panel, thereby improving display quality, and in particular, the disclosure can provide more suitable for pits and pits. Selecting the position and increasing the range of the gate line that can enter the pit, thereby eliminating the stress problem generated by the gate driving circuit of the pit, thereby improving the display of the horizontal stripes. Another object of the present disclosure is to provide a greater range of barrier gate lines in an environment where reliability testing is performed to eliminate the stress problem caused by the pits on the gate driving circuit and the resulting stress Shows the horizontal stripes and improves the display quality.

According to one of the features of the present disclosure, the present disclosure provides an in-cell touch display device including an in-cell touch display panel, a display controller, a plurality of touch sensing electrodes, and a touch controller. The in-cell touch display panel has a plurality of gate lines. The display controller drives a plurality of gate lines of the in-cell touch display panel to perform a display operation of the display frame. The plurality of touch sensing electrodes are arranged in a matrix to perform touch sensing. The touch controller is connected to the plurality of touch sensing electrodes for touch detection. The display time of the display frame is divided into a plurality of display time slots and a plurality of non-display time slots. Each of the gate lines is driven by the display controller during a display time of a display time slot, and each column touches The sensing electrodes correspond to K gate lines, and the driving time of each group of K gate lines forms a selectable time slot, and a plurality of selectable time slots are selected as the starting time of the plurality of non-display time slots. , where K is a positive integer.

The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

2 is a schematic diagram of the in-cell touch display device 200 of the present disclosure. The in-cell touch display device 200 includes an in-cell touch display panel 210 , a display controller 220 , a touch controller 230 , and a bus bar 240 .

The in-cell touch display panel 210 has a display panel 211 and a touch layer 213 . The display panel 211 has a plurality of gate lines 2111 and a plurality of data lines 2113. The plurality of gate lines 2111 and the plurality of data lines 2113 are respectively arranged in two directions substantially perpendicular to each other, and are simply displayed. A portion of the gate line 2111 and the data line 2113 are shown. An active component 2115 is disposed at the intersection of each of the gate lines 2111 and each of the data lines 2113 for performing a display operation.

The touch layer 213 has a plurality of transparent electrodes 400 arranged in rows and columns to perform touch detection. Therefore, in the disclosure, the transparent electrode 400 may also be referred to as a touch sensing electrode. The plurality of transparent electrodes 400 can use a self-capacitance or mutual capacitance (Mutual-capacitance) technology for capacitive touch detection. In FIG. 2, although the touch layer 213 and the display panel 211 are separately illustrated, this is for convenience of explanation. In the embodiment of the in-cell display device, the touch layer 213 and the transparent electrode 400 may also be disposed directly on the substrate of the active device 2115 and cover the plurality of active devices 2115.

The display controller 220 is configured to drive a plurality of gate lines 2111 of the in-cell touch display panel 210 to perform a display operation of a display frame. The touch controller 230 is connected to the plurality of transparent electrodes 400 of the touch layer 213 of the in-cell touch display panel 210 for touch detection.

The bus bar 240 is connected to the display controller 220 and the touch controller 230 to transmit/receive related signals between the display controller 220 and the touch controller 230.

FIG. 3 is another schematic diagram of the in-cell touch display device 200 of the present disclosure. The in-cell touch display device 200 includes an in-cell touch display panel 210, a display controller 220, a touch driving and detecting controller 230, bus bars 241 and 242, and a main controller 250. The main difference between FIG. 3 and FIG. 2 is that, in FIG. 3, the main controller 250 uses the bus bars 241 and 242 to transmit/receive related signals to the display controller 220 and the touch controller 230, respectively.

4 is a schematic diagram of a gate line 2111 and a transparent electrode 400 in accordance with an embodiment of the present disclosure. In this embodiment, each row of touch sensing electrodes corresponds to K gate lines, and the in-cell touch display panel 210 has 1440 gate lines. As shown in FIG. 4, one row of touch sensing electrodes corresponds to 45 gate lines. The first column of touch sensing electrodes 401 corresponds to the gate line G1 to the gate line G45. The second column of touch sensing electrodes 402 corresponds to the gate line G46 to the gate line G90. The last column of touch sensing electrodes 40n corresponds to the gate line G1396 to the gate line G1440. In other embodiments, the in-cell touch display panel 210 can have other numbers of gate lines, and each row of touch sensing electrodes can correspond to 40 gate lines, 45 gate lines, or other The number of gate lines. Each of the touch sensing electrodes may also correspond to a different number of gate lines. For example, the touch sensing electrodes of the upper and lower edges may correspond to a different number of gate lines than the touch sensing electrodes located in the middle.

In the embodiment where the frame rate is 60 Hz, the display time of a display frame is about 16.6 ms. Since the touch detection is performed, the display frame can be divided into multiple display periods. A slot T _D (Display slot) and a plurality of non-display slots T _N (Non-display slot). During a driving time of the display time slot T _D , each of the gate lines can be driven by the display controller 220, and the touch controller 230 can perform touch detection in the plurality of non-display time slots T _N . Measurement. 4, a first gate line G1 at a display driving time slot T _D a t1 of the display controller 220 is driven. A 45th gate line G45 is driven by the display controller 220 at a driving time t45 of the display time slot T _D .

It should be noted that the driving time of the slot T _D is not fixed when a gate line is displayed. For example, when a non-display time slot T _N is inserted between the driving time t1 of the first gate line G1 and the driving time t45 of the 45th gate line G45, the driving time t45 of the 45th gate line G45 is Will be delayed.

Each set of K gate lines corresponding to each column of touch sensing electrodes has a display driving time 410. The display driving time 411 of the first group of K gate lines corresponding to the first column of touch sensing electrodes 401 is from the driving time t1 to the driving time t45. The display driving time 412 of the second group of K gate lines corresponding to the second column of touch sensing electrodes 402 is from a driving time t46 to a driving time t90. By analogy.

The display driving time 410 corresponding to each column of touch sensing electrodes is not fixed. For example, when a non-display time slot T _N is inserted between the driving time t1 of the first gate line G1 and the driving time t45 of the 45th gate line G45, the first column touch sensing electrode 401 corresponds to The display driving time 411 of the first group of K gate lines is extended.

A selectable time slot 420 is formed during the driving time of each set of K gate lines. For example, a selectable time slot 421 is formed in the driving time 411 of the first group of K gate lines corresponding to the first column of touch sensing electrodes 401. A selectable time slot 422 is formed in the driving time 412 of the second group of K gate lines corresponding to the second column of touch sensing electrodes 402. The length of time of the selectable time slot 420 is less than or equal to the length of time of the drive time 410. In the present disclosure, the main controller 250, the display controller 220, or the touch controller 230 may select a start time of the plurality of non-display time slots T _N from the plurality of selectable time slots 420.

The display controller 220 uses a plurality of gate line driving circuits to drive the plurality of gate lines 2111 of the in-cell touch display panel 210 to perform a display operation of displaying a frame. FIG. 5 is a schematic diagram of a gate line driving circuit 500 in an embodiment of the present disclosure. As shown in FIG. 5, an n-1th gate line driver circuit 510 is used to generate an output signal Gn-1. The output signal Gn-1 is used not only to drive an n-1th gate line Gn-1 but also to control a transistor M1 of an nth stage gate line driver circuit 520. Similarly, an output signal Gn is also used to drive an nth gate line Gn and a transistor (not shown) for controlling an n+1th gate line driver circuit. In the present disclosure, Gn represents both the nth gate line and the output signal on the nth gate line Gn.

6 is a timing diagram of an nth-level gate line driver circuit 520 in accordance with an embodiment of the present disclosure. Wherein, when the output signal Gn-1 is a high voltage, a transistor M1 is turned on. A VDS signal is a DC (high voltage) signal, so that a control node N of the nth gate line driver circuit 520 is charged to a first high voltage VGH1. When the output signal Gn-1 becomes a low voltage, the pull-down circuit 521 is in an off state, that is, the control node N is held at the first high voltage VGH1. At this time, a transistor M9 is turned on. When a signal CK on the source of the transistor M9 is changed from a low voltage to a high voltage, the voltage of the control node N is boosted to a second high voltage VGH2 due to the relationship of the capacitance 3P. And because the transistor M9 is turned on, the signal CK flows through the transistor M9, and the output signal Gn is pulled to the high voltage to drive the nth gate line Gn, and simultaneously to the gate of the first stage. The control node N of the line drive circuit performs charging. Therefore, the width of the output signal Gn is controlled by the signal CK. When the signal CK on the source of the transistor M9 is switched from the high voltage to the low voltage, the voltage of the control node N is pulled down to the first high voltage VGH1, and the transistor M9 is turned on. At this time, although the transistor M9 is turned on, the signal CK is turned to the low voltage, so the output signal Gn becomes the low voltage.

According to the timing diagram of FIG. 6, the gate line driving circuit 520 can be divided into a to-be-scanned area I, a pre-charged area II, an open area III, a to-be-closed area IV, and a scan completion area V. In the precharge region II, the transistor M1 is turned on by the gate driving circuit 510 of the previous stage to precharge the control node N, and the control node N is at the first high voltage VGH1. In the open region III, the control node N is at the second high voltage VGH2, and the output signal Gn drives the gate line Gn. In the area to be closed IV, the control node N is at the first high voltage VGH1, but at this time, the output signal Gn is the low voltage. In the scan completion area V, the control node N and the output signal Gn are both low voltages.

As can be seen from FIG. 6, in the open region III, the gate line driving circuit 520 drives the gate line Gn, and the data on the data line 2113 is written into the relevant pixel via the active device 2115. Therefore, the opening zone III is not suitable for entering the pit.

In the pre-charge region II and the to-be-closed region IV, although the gate line driving circuit 520 does not drive the gate line Gn, but the control node N is at the first high voltage VGH1, the transistor M9 is turned on until The scan completion area V is closed. The gate line driving circuit 520 has two states. The states of the two gate line driving circuits 520 respectively generate two different environmental capacitances, one of which is the to-be-scanned area I and the scanning completion area V. The other state 2 is the pre-filling zone II and the to-be-closed zone IV.

Generally, the gate line driving circuit 520 uses a multi-phase mode to drive the gate line 2111. FIG. 7 is a timing diagram of the 8-phase (8-phase) driving of the gate line driving circuit 520 of the present disclosure. In FIG. 7, the signal starting with N represents the control node N, for example, NL3 represents the control node N of the third gate line driving circuit 520 on the left side of the in-cell touch display panel 210. The signal starting with G represents an output signal. For example, GR4 represents an output signal of the fourth gate line driving circuit 520 on the right side of the in-cell touch display panel 210. As shown in Figure 7, block 710 represents the stop position. Enter the pit after the end of GL4, as shown at ellipse B. At this time, since the GR5 is not yet high voltage, the node voltage of the control node NR3 has not been pulled down to a low potential, so that the control node N of the gate line driving circuit 520 corresponding to the eight gate lines is high when entering the pit. In the potential state (NR3, NL3, NR4, NL4, NR5, NL5, NR6, VL6), the M9 transistor of the gate line driving circuit 520 corresponding to the eight gate lines is turned on, thereby affecting the reading of the transparent electrode 400. The raw data at the touch. As can be seen from FIG. 7, the positions of the four gate lines before entering the pit and the positions of the four gate lines after entering the pit affect the original data when the transparent electrode 400 is touched.

Similarly, when the gate line driving circuit 520 is driven by 6 phases, the positions of the three gate lines before entering the pit and the positions of the three gate lines after entering the pit affect the touch when the transparent electrode 400 is read. Raw data.

Fig. 8 is a schematic view showing the position of the pit and the position of the affected gate line according to the present disclosure. The gate line driving circuit 520 is driven by 8 phases, and each column of touch sensing electrodes corresponds to 40 gate lines. For the sake of simplicity, only a portion of the gate lines corresponding to the two rows of touch sensing electrodes 403 and 404 are shown in FIG. The original data variation is caused by the voltage of the control node N of the gate line driving circuit 520 when entering the pit. The number of original data when the gate line affects the touch is 8 (4 before entering the pit and 4 after exiting the pit). When these gate lines are in different frames, the number of stripes across the touch sensing electrodes is different, and there is a change in the original data. .

In FIG. 8 , a gate line G112 is used as a pit position. When the in-cell touch display panel 210 is not touched, the raw data obtained by the touch controller 230 is base data. For comparison. At the same time, the touch controller 230 also uses the basic data as a basis for comparison of whether or not there is a touch. The long square of 810 indicates that the gate line G116 is the pit position, and the in-cell touch display panel 210 has no raw data obtained when it is touched. The long box labeled 820 indicates that the gate line G117 is the pit position, and the in-cell touch display panel 210 has no raw data obtained when it is touched. By analogy.

When the gate line G116 is the original data obtained by entering the pit position, there is no significant difference compared with the original data obtained when the gate line G112 is the pit position. When the raw data obtained by the gate line G117 for the pit position is compared with the original data obtained when the gate line G112 is the pit position, a significant difference occurs. At the same time, when the gate line G118 to the gate line G124 are respectively the original data obtained by entering the pit position, compared with the original data obtained when the gate line G112 is the pit position, there is also a significant difference, and the difference is increasingly The more obvious. When the raw data obtained by the gate line G125 for the pit position is compared with the original data obtained when the gate line G124 is the pit position, there is no significant difference. That is, when the gate line G125 is the original data obtained by entering the pit position and the difference between the original data obtained when the gate line G112 is the pit position and the original obtained when the gate line G124 is the pit position. The difference between the data and the original data obtained when the gate line G112 is the pit position does not change significantly.

As can be seen from the foregoing, the number of gate lines in the state 2 of the gate line driving circuit 520 at the time of entering the pit depends on the driving method. In the eight-phase driving mode, eight gate lines are in this state 2. Among them, 8/2 in the pre-filling zone II, 8/2 in the area to be closed IV, corresponding to 4 after the pit position (the pre-filling zone II) and the first 4 in the pit position (the area to be closed) IV). In the state 2 when entering the pit, when the number of gate lines corresponding to the gate line driving circuit 520 across the different transparent electrodes 400 is different, even if the in-cell touch display panel 210 is not touched At the time, the raw data obtained will also mutate.

Similarly, when the gate line driving circuit 520 adopts a six-phase driving method, six gate lines are in the state 2. Three of them are in the pre-filling zone II, and three are in the area to be closed IV, which is equivalent to three (the pre-filling zone II) and three in front of the pitting position (the area to be closed IV). In the state 2 when entering the pit, when the number of gate lines corresponding to the gate line driving circuit 520 across the different transparent electrodes 400 is different, even if the in-cell touch display panel 210 is not touched, The original data obtained will also be mutated.

That is, when the gate line driving circuit 520 adopts an X-phase driving mode, there are X gate lines in the state 2 (the pre-filling area II and the to-be-closed area IV). . Wherein X/2 is in the pre-filling zone II, X/2 is in the area to be closed IV, corresponding to X/2 (the pre-filling zone II) and X/2 in front of the pit position after entering the pit position ( The area to be closed IV). In the state 2 when entering the pit, when the number of gate lines corresponding to the gate line driving circuit 520 across the different transparent electrodes 400 is different, even if the in-cell touch display panel 210 is not touched, The raw data obtained will also be mutated.

Figure 9 is a schematic illustration of the position of the transparent electrode 400 and the affected gate line of the present disclosure. The gate line driving circuit 520 is driven by 8 phases. When the pit position is selected before Y, the gate line of the region V to be closed enters the range of the previous transparent electrode 400, so Y may be referred to as a GOA to be turned off. When the pit position is selected after Z, the gate line of the precharge region II will enter the range of the next transparent electrode 400, so Z may be referred to as a GOA precharge affected region. Therefore, the pit position can be selected between Y and Z (excluding Y and Z). At this time, the GOA pre-charge affected zone and the GOA to be closed affected zone do not cross different transparent electrodes 400, so the original data read by the transparent electrode 400 when the in-cell touch display panel 210 is not touched Will not be affected and will mutate.

According to the foregoing description, when the gate line driving circuit 520 adopts the X phase driving mode, one of the plurality of selectable time slots 420 is composed of a row of touch sensing electrodes 400 corresponding to K strips. The driving time of the (X/2)th gate line in the gate line starts, and the driving time of the (KX/2) gate line in the K touch gate electrode corresponding to the column touch sensing electrode 400 until.

For example, when a column of touch sensing electrodes corresponds to 40 gate lines, and the gate line driving circuit 520 is driven by 6 phases. When the pit position is selected at the position of the first two gate lines and the last three gate lines, the original data read by the transparent electrode 400 may be affected although there is no touch. That is, the pit is inserted at any time between the gate lines G3 to G37, and the original data read by the transparent electrode 400 is not affected when there is no touch.

For example, when a column of touch sensing electrodes corresponds to 45 gate lines, and the gate line driving circuit 520 is driven by 12 phases, when the pit position is selected, the first 5 gate lines and the last 6 gate lines are selected. The position of the original data read by the transparent electrode 400 may be affected although there is no touch at this time. That is, the pit is inserted into the pit at any time between the gate lines G6 to G39. When there is no touch, the original data read by the transparent electrode 400 is not affected.

With this method of selecting the position of the pit, the present disclosure can select a plurality of pit positions to avoid the display of the horizontal stripes and reduce the stress on the gate line driving circuit 520. In particular, the present application can provide more suitable gate and stop position selection, and increase the range of gate lines that can enter the pit, thereby eliminating the stress problem generated by the gate drive circuit when entering the pit, thereby improving the display of the horizontal stripes. Another object of the present disclosure is to provide a larger range of sluice gate lines in the environment for reliability testing, so as to eliminate the stress problem caused by the pits on the gate driving circuit and the resulting horizontal stripes. Phenomenon, and improve display quality.

FIG. 10 is a schematic illustration of the selectable time slot 421 of the present disclosure. The gate line driving circuit 520 is driven by 8 phases, and the column of touch sensing electrodes corresponds to 45 gate lines. Therefore, the pit entry position is in the same column of transparent electrodes 400, and the pits are inserted into the pit at any time between the fourth gate line and the forty-first gate line, and the raw data read by the transparent electrode 400 is not touched. Will not be affected. Assuming that the pit position is taken in the third column of the transparent electrode 400, the pit position is selected to enter the pit at any time between the gate lines G94 and G131. When there is no touch, the original data read by the transparent electrode 400 is not affected. influences. The selectable time slot 421 is started from the driving time t94 of the 94th gate line G94 to the driving time t131 of the 131th gate line G131. That is, the start time of a non-display slot _TN (Non-display slot) can be selected at any time in the selectable time slot 421 for touch detection.

Referring to FIG. 10 and FIG. 1 , in a first display frame (Frame I), a start time of a non-display slot T _N (Non-display slot) is a J gate of a selectable time slot. The driving time of the polar line. In the next display frame (Frame I+1), the start time of the non-display slot T _N (Non-display slot) is the driving time of the J+1th gate line of the selectable time slot, among which I and J are positive integers. That is, in the first display frame (Frame I), the pit position is selected at the driving time t94 of the 94th gate line G94, and in the 1+1th display frame (Frame I+1) In the middle, the pit position is selected to enter the pit at the driving time t95 of the 95th gate line G95. The position of the pit can be sequentially used between the gate line G94 and the gate line G131.

In the previous embodiment, in a first display frame (Frame I) and a next display frame (Frame I+1), the position of the pit can be between the gate line G94 and the gate line G131. Use in order. In other embodiments, in a first display frame (Frame I) and a next display frame (Frame I+2), the position of the pit can be between the gate line G94 and the gate line G131. Use in order. That is, in a first display frame, the start time of a non-display time slot T _N is the zone time of the Jth gate line of a selectable time slot, at an I+W display In the frame, the start time of the non-display time slot T _N is the driving time of the J+1th gate line of the selectable time slot, where I, J, and W are positive integers.

In other embodiments, a second graph showing the I + 2 th frame, a non-display start time slot start time T _N and T _N of the groove when the display is showing the I-th frame the same slot start time T _N I + to the second non-display a graph showing the same when a frame of I + in FIG. 3 of display box, a groove non-display start time T _N. Also i.e., the I-th display frame (Frame I) in the pit position is selected in the driving time of the 94 gate line G94 of t94 into the pit, the first I + 1 th display frame (Frame I + 1) In the middle, the pit position is selected at the driving time t95 of the 95th gate line G95, and in the 1+2 display frame (Frame I+2), the pit position is selected at the 94th gate line. G94 drive time t94 into the pit, in the first +3 display frame (Frame I + 3), the pit position is selected in the 95th gate line G95 drive time t95 into the pit, and so on. That is, the non-display time slots T _N may start times for the non-display frame showing the I-th time slot of the slot start time T and non-T _N I + 1 a first diagram showing a display frame The start time of _N is cyclically beating.

In other embodiments, in a first display frame (Frame I), the start time of a non-display time slot T _N is the zone time of the Jth gate line of a selectable time slot. In the next display frame (Frame I+1), the start time of the non-display time slot T _N is the driving time of the Hth gate line of the selectable time slot, wherein I, J, and H are positive. Integer and J is uncorrelated. That is, the position of the pit can be arranged in a random number between the gate line G94 and the gate line G131.

FIG. 11 is another schematic view of the optional time slot 420 of the present disclosure. The gate line driving circuit 520 is driven by 8 phases, and the column of touch sensing electrodes corresponds to 45 gate lines. Therefore, the pit position is in the same column of the transparent electrode 400, and the pit is inserted at any time between the fourth gate line and the forty-first gate line, and the G94~G131 transparent electrode 400 is read when there is no touch. Raw data will not be affected. That is, the selectable time slot 421 corresponding to the third column touch sensing electrode is the driving time between the gate line G94 and the gate line G131, and the selectable time slot 422 corresponding to the fourth column touch sensing electrode. It is the driving time between the gate line G139 and the gate line G176. Therefore, in a first display frame, the start time of a non-display time slot T _N can be located in a column A (third column) of the touch sensing electrodes corresponding to the selectable time slot 421 or an A +1 column (fourth column) of the selectable time slots 422 corresponding to the touch sensing electrodes, wherein A is a positive integer. The selectable time slot 421 is started from the driving time t94 of the 94th gate line G94 to the driving time t131 of the 131th gate line G131. The selectable time slot 422 is from the driving time t139 of the 139th gate line G139 to the driving time t176 of the 176th gate line G176.

That is, the position of the pit is between the gate line G94 to the gate line G131 or the gate line G139 to the gate line G176. The position of the pit is moved in the selectable time slot 421 or the selectable time slot 422, and the position of the pit is between the gate line G94 to the gate line G131 or the gate line G139 to the gate line G176. And the pit position can be used sequentially in the above two sections. Similarly, in the next display frame (the first+1 display frame), the start time of a non-display time slot T _N may be located in a row A (third column) of the touch sensing electrodes corresponding to the selectable time The slot 421 or an A+1 column (fourth column) touch sensing electrodes correspond to the selectable time slots 422.

In other embodiments, in a first display frame, the start time of a non-display time slot T _N may be located in a selectable time slot 421 corresponding to the touch sensing electrode of the A column (third column). The driving time of a J-th gate line or the driving time of a J-th gate line of the selectable time slot 422 corresponding to the touch sensing electrode of the A+1 column (fourth column) In the I+1 display frame (the next display frame), the start time of the non-display time slot T _N may be located in the selectable time slot 421 corresponding to the touch sensing electrode of the A column (third column). The driving time of the Hth gate line or the driving time of an Hth gate line of the selectable time slot 422 corresponding to the touch sensing electrode of the A+1 column (fourth column), among them, A, J H is a positive integer and J is not related to the H system. That is, the position of the pit is between the gate line G94 to the gate line G131 or the gate line G139 to the gate line G176, and the pit position can be arranged in a random number in the two areas.

In other embodiments, in a first display frame, the start time of a non-display time slot T _N may be located in a selectable time slot 421 corresponding to the touch sensing electrode of the A column (third column). The driving time of a J-th gate line. In an I+1 display frame, the start time of a non-display time slot T _N may be located in an A+1 column (fourth column) touch sensing electrode corresponding to the selectable time slot 422 The driving time of the Hth gate line. In an I+2 display frame (lower next display frame), the start time of the non-display time slot T _N may be in the selection of the touch sensing electrode corresponding to the A column (third column). The driving time of a Pth gate line of the slot 421. In an I+3 display frame, the start time of the non-display time slot T _N may be located in a Qth of the selectable time slot 422 corresponding to the touch sensing electrode of the A+1 column (fourth column). The drive time of the gate line, where A, J, H, P, and Q are positive integers and the J, H, P, and Q systems are irrelevant. That is, in the first display frame and the first ++ display frame, the start time of the non-display time slot T _N may be a selectable time slot corresponding to the touch sensor electrode of the column A And alternately cycling in the selectable time slots corresponding to the touch sensor electrodes of the A+1 column.

In other embodiments, the start time of a non-display time slot T _N may be located in a selectable time slot 421 and an A+1 column (fourth) of the touch sensing electrodes of the A column (third column). The driving time of a Jth gate line in the selectable time slot 422 corresponding to the touch sensing electrode, wherein A and J are positive integers and the J system is randomly selected. That is, the position of the pit is between the gate line G94 and the gate line G131, and the gate line G139 to the gate line G176 can be arranged in a random number.

Figure 12 is a further schematic illustration of the selectable time slot 420 of the present disclosure. The gate line driving circuit 520 is driven by 8 phases, and the column of touch sensing electrodes corresponds to 45 gate lines. Therefore, the pit position is in the same column of the transparent electrode 400, and the pit is inserted into the pit at any time between the fourth gate line and the forty-first gate line. When there is no touch, the original data read by the transparent electrode 400 is not Will be affected. The main difference from FIG. 11 is that the position of the pit is between the gate line G94 to the gate line G131, the gate line G139 to the gate line G176, or the gate line G184 to the gate line G221. That is, the position of the pit may be sequentially used or randomly between the gate line G94 to the gate line G131, the gate line G139 to the gate line G176, or the gate line G184 to the gate line G221. Arrange and use.

When the touch controller 230 is not operated for a short time, it enters a monitor mode to save power. When the in-cell touch display panel 210 is not touched, the original data obtained by the touch controller 230 is the basic data, and the basic data is used as a comparison basis for whether or not there is a touch. Since the usage environment changes at any time, in the supervised mode, the touch controller 230 still returns to an active mode at a fixed time interval to update the basic data. When the basic data update is touched, different pit positions can be selected to update the basic data, so as to avoid updating in the same pit position for a long time, thereby causing stress and forming a horizontal stripes.

When the basic data update is performed, the pit position can be selected by referring to FIG. 10 and its related description. That is, when the in-cell touch display panel enters an active mode from a supervised mode, in a first display frame, the start time of a non-display time slot T _N is a selectable time slot. The driving time of the J gate lines is, in an I+1 display frame, the start time of the non-display time slot T _N is the driving time of the J+1th gate line of the selectable time slot. Where I and J are positive integers. That is, the position of the pit is sequentially used between the gate line G94 and the gate line G131.

In other embodiments, when the in-cell touch display panel enters an active mode from a supervised mode, in a first +2 display frame, a start time of the non-display time slot T _N is The start time of the non-display time slot T _N in the first display frame is the same. In a first +3 display frame, the start time of the non-display time slot T _N is at the first I+1. The start time of the non-display time slot T _N in the display frame is the same. Also i.e., the I-th display frame (Frame I) in the pit position is selected in the driving time of the 94 gate line G94 of t94 into the pit, the first I + 1 th display frame (Frame I + 1) In the middle, the pit position is selected at the driving time t95 of the 95th gate line G95, and in the 1+2 display frame (Frame I+2), the pit position is selected at the 94th gate line. G94 drive time t94 into the pit, in the first +3 display frame (Frame I + 3), the pit position is selected in the 95th gate line G95 drive time t95 into the pit, and so on. That is, the non-display time slots T _N may start times for the non-display frame showing the I-th time slot of the slot start time T and non-T _N I + 1 a first diagram showing a display frame The start time of _N is cyclically beating.

When the in-cell touch display panel enters an active mode from a supervised mode, in a first display frame, the start time of the non-display time slot T _N is a J gate of a selectable time slot. The driving time of the polar line, in an I+1 display frame, the starting time of the non-displaying time slot T _N is the driving time of the Hth gate line of the selectable time slot, wherein I, J H is a positive integer and J is not related to the H system. That is, the position of the pit can be arranged in a random number between the gate line G94 and the gate line G131. When the basic data update is performed, the pit position can also be selected by referring to FIG. 11 and FIG. 12 and related descriptions.

It can be seen from the foregoing description that the in-cell touch display device of the present application can select the time of entering the pit according to the corresponding selectable time slot 420 of each group of K gate lines in the selection of the pits, and can provide more It is suitable for the position of the pit and the stop pit to avoid the appearance of horizontal stripes on the touch display panel, thereby improving the display quality. In particular, the present application can provide more suitable gate and stop position selection, and increase the range of gate lines that can enter the pit, thereby eliminating the stress problem generated by the gate drive circuit when entering the pit, thereby improving the display of the horizontal stripes. Another object of the present disclosure is to provide a larger range of sluice gate lines in the environment for reliability testing, so as to eliminate the stress problem caused by the pits on the gate driving circuit and the resulting horizontal stripes. Phenomenon, and improve display quality.

In the foregoing examples, the selection of each region is for illustrative purposes only and is not intended to limit the scope of the invention. A person skilled in the art can change the selection range of each area according to the description of the disclosure.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

LCD_Busy‧‧‧Display touch switch indication signal

T _D ‧‧‧ display time slot

T _N ‧‧‧non-display time slot

A‧‧‧ ellipse

200‧‧‧In-cell touch display device

210‧‧‧In-cell touch display panel

220‧‧‧ display controller

230‧‧‧ touch controller

240, 241, 242‧‧ ‧ busbars

250‧‧‧Master controller

211‧‧‧ display panel

213‧‧‧ touch layer

2111‧‧‧ gate line

2113‧‧‧Information line

2115‧‧‧Active components

400‧‧‧Transparent electrode

410, 411, 412, ..., 41n‧‧‧ display drive time

T1,...,t45,...,t1440‧‧‧ drive time

420, 421, 422, ‧ ‧ optional time slots

401‧‧‧The first column of touch sensing electrodes

402‧‧‧Second column touch sensing electrode

403‧‧‧The third column of touch sensing electrodes

404‧‧‧fourth column touch sensing electrode

40n‧‧‧n-th column touch sensing electrode

500‧‧ ‧ gate line drive circuit

510‧‧‧n-1th gate drive circuit

Gn-1‧‧‧ output signal

Gn-1‧‧‧第n-1 gate line

520‧‧‧n-th gate drive circuit

M1‧‧‧O crystal

Gn‧‧‧ output signal

Gn‧‧‧nth gate line

N‧‧‧ control node

VGH1‧‧‧ first high voltage

521‧‧‧ Pulldown circuit

M9‧‧‧O crystal

3P‧‧‧ capacitor

VGH2‧‧‧ second high voltage

CK‧‧‧ signal

I‧‧‧ to be scanned

II‧‧‧Precharge area

III‧‧‧Opening area

IV‧‧‧Closed area

V‧‧‧ scan completion area

710‧‧‧ Block

B‧‧‧Oval

NR3, NL3, NR4, NL4, NR5, NL5, NR6, NL6‧‧‧ control nodes

GR3, GL3, GR4, GL4, GR5, GL5, GR6, GL6‧‧‧ output signals

810‧‧‧ long box

G1~G1440‧‧‧ gate line

FIG. 1 is a schematic diagram of a conventional touch detection and display operation. 2 is a schematic diagram of an in-cell touch display device according to the present disclosure. FIG. 3 is another schematic diagram of the in-cell touch display device of the present disclosure. 4 is a schematic diagram of a gate line and a transparent electrode according to an embodiment of the present disclosure. FIG. 5 is a schematic diagram of a gate line driving circuit according to an embodiment of the present disclosure. 6 is a timing diagram of the nth-level gate line driving circuit of the present disclosure. FIG. 7 is a timing diagram of the gate drive circuit of the present disclosure using 8-phase drive. Fig. 8 is a schematic view showing the position of the pit and the position of the affected gate line according to the present disclosure. Figure 9 is a schematic illustration of the position of the transparent electrode and the affected gate line of the present disclosure. Figure 10 is a schematic illustration of an alternative time slot of the present disclosure. Figure 11 is another schematic illustration of the selectable time slot of the present disclosure. Figure 12 is a further schematic illustration of the selectable time slot of the present disclosure.

Claims (12)

An in-cell touch display device includes: an in-cell touch display panel having a plurality of gate lines; and a display controller driving the plurality of gate lines of the in-cell touch display panel to Performing a display operation of displaying a frame; a plurality of touch sensing electrodes arranged in a row and column for performing touch sensing; and a touch controller connected to the plurality of touch sensing electrodes for performing In the touch detection, the display time of the display frame is divided into a plurality of display time slots and a plurality of non-display time slots, and each of the gate lines is driven by the display controller at a driving time of a display time slot. Driving, each column of touch sensing electrodes corresponds to K gate lines, and the driving time of each group of K gate lines forms a selectable time slot, and a plurality of selectable time slots are selected as the plurality of non-displaying The starting time of the slot is such that the driving time corresponding to at least one column of the touch sensing electrodes is not fixed, and K is a positive integer greater than 3. The in-cell touch display device of claim 1, wherein the display controller drives the plurality of gate lines of the in-cell touch display panel in an X phase driving manner, wherein X is an even number Positive integer. The in-cell touch display device of claim 2, wherein one of the plurality of selectable time slots is formed by a column of touch sensing electrodes corresponding to the K gate lines The driving time of the (X/2) gate line starts until the driving time of the (KX/2) gate line in the K touch gate corresponding to the column touch sensing electrodes. The in-cell touch display device according to claim 3, wherein, in a first display frame, the start time of the non-display time slot is a J gate of the selectable time slot The interval time of the polar line, in the first I+W display frame, the non-display time slot The starting time is the driving time of the J+1th gate line of the selectable time slot, where I, J, and W are positive integers. The in-cell touch display device according to claim 3, wherein, in a first display frame, the start time of the non-display time slot is a J gate of the selectable time slot The driving time of the polar line, in an I+W display frame, the starting time of the non-displaying time slot is the driving time of the Hth gate line of the selectable time slot, among which I, J, H W is a positive integer and J is not related to the H system. . The in-cell touch display device of claim 3, wherein in the first display frame and in the first ++ display frame, the start of a non-display time slot The time may be in a selectable time slot corresponding to the touch sensing electrode of column A or a selectable time slot corresponding to the touch sensor electrode of column A+1, wherein I, A, and W are positive integers. . The in-cell touch display device of claim 3, wherein in a first display frame, the start time of a non-display time slot is located in a column A touch sensing electrode The driving time of a J-th gate line of the corresponding selectable time slot or the driving time of a J-th gate line of the selectable time slot corresponding to the A+1 column touch sensing electrode is in the first In the I+W display frame, the start time of the non-display time slot includes a driving time of an Hth gate line of the selectable time slot corresponding to the touch sensing electrode of the column A or an A+1 The driving time of an Hth gate line of the selectable time slot corresponding to the column touch sensing electrodes, wherein A, J, H, and W are positive integers and J is not related to the H system. The in-cell touch display device according to the sixth or seventh aspect of the invention, wherein the non-display time slot is in the first display frame and the first ++ display frame The start time may be alternately cyclically selected in the selectable time slot corresponding to the touch sensing electrode of the column A and the selectable time slot corresponding to the touch sensor electrode of the A+1 column. The in-cell touch display device of claim 3, wherein the start time of a non-display time slot is located in a selectable time slot corresponding to the touch sensing electrode of column A and an A The drive time of a Jth gate line in the selectable time slot corresponding to the +1 column touch sensing electrode, wherein A and J are positive integers and the J system is randomly selected. The in-cell touch display device of claim 3, wherein the in-cell touch display panel enters an active mode from a supervised mode, in a first display frame, a non- The start time of the display time slot is the driving time of the Jth gate line of a selectable time slot. In a first I+W display frame, the start time of the non-display time slot is the selectable time slot. The driving time of the J+1th gate line, where I, J, and W are positive integers. The in-cell touch display device of claim 3, wherein the in-cell touch display panel enters an active mode from a supervised mode, in a first display frame, a non- The start time of the display time slot is the driving time of the Jth gate line of a selectable time slot. In a first I+W display frame, the start time of the non-display time slot is the selectable time slot. The driving time of the Hth gate line, where I, J, H, and W are positive integers and J is not related to the H system. The in-cell touch display device of claim 1, wherein the touch controller performs touch detection in at least one of the plurality of non-display time slots.