Display panel and driving method thereof, and display device

Abstract

A display panel (10) and a driving method thereof, and a display device. The display panel (10) comprises a display area, wherein the display area comprises at least one touch area (11) and at least one non-touch area (12). The display panel (10) further comprises at least one touch button (13) located in the at least one touch area (11), wherein the at least one touch button (13) is configured to display a predetermined screen capable of touch operation in the at least one touch area (11) when touched.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a driving method thereof, and a display device. Background Art

[0002] Currently, MNT (moniter) / TV (television) displays use physical OSD (on-screen display) menu buttons, which are usually arranged on the back, side or bottom of the frame of the display.

[0003] When users adjust the display parameters, such as brightness and contrast, they need to constantly switch buttons, which is cumbersome. At the same time, as displays develop towards high resolution and high refresh rate, the functions of displays are becoming more and more complex, and more and more functions need to be implemented through physical buttons. This also increases the complexity and adjustment time of physical button function selection and switching, reducing the user experience. Summary of the invention

[0004] According to one aspect of the present disclosure, a display panel is provided, which includes a display area, wherein the display area includes at least one touch area and at least one non-touch area, wherein the display panel also includes at least one touch button located in the at least one touch area, and the at least one touch button is configured to display a predetermined screen capable of touch operation in the at least one touch area when touched.

[0005] Optionally, the predetermined screen includes a plurality of touch buttons.

[0006] Optionally, the display panel also includes: a timing control register, which is configured to output a touch enable signal and a gate enable signal in the touch stage; a microcontroller, which is configured to output a touch clock synchronization signal and a pulse width modulation wave under the control of the touch enable signal; a power management integrated circuit, which is configured to output a common voltage signal; and a touch integrated circuit, which is configured to output a first redundant parasitic capacitance signal based on the pulse width modulation wave and the common voltage signal under the control of the touch clock synchronization signal, and to output a second redundant parasitic capacitance signal based on the gate enable signal.

[0007] Optionally, the display panel also includes a plurality of pixel units and a plurality of first signal lines arranged in multiple rows and columns in the display area, wherein each of the at least one touch area is divided into a plurality of sensing partitions, each of the plurality of sensing partitions includes a selected number of adjacent pixel units, the plurality of sensing partitions correspond one-to-one to the plurality of first signal lines, respectively, and the common electrodes of the pixel units in each sensing partition are respectively connected to the corresponding first signal lines.

[0008] Optionally, the display panel further includes a second signal line, and the second signal line is connected to a common electrode of each pixel unit in the at least one non-touch area.

[0009] Optionally, the common electrode of each pixel unit in each of the plurality of sensing partitions is formed in one piece, the common electrodes of the plurality of sensing partitions are independent of each other, and the common electrode of each pixel unit in the at least one non-touch area is formed in one piece.

[0010] Optionally, the display panel also includes: at least one sensing and source integrated driving circuit, which is connected to the microcontroller and the touch integrated circuit and is respectively connected to each pixel unit in the multiple sensing partitions through the multiple first signal lines, and is configured to sense the touch of the at least one touch button and the multiple touch keys in the predetermined screen through the multiple first signal lines based on the touch clock synchronization signal and the pulse width modulation wave output by the microcontroller in the touch stage and send the touch signal to the microcontroller, and send the first redundant parasitic capacitor signal to the multiple pixel units in the at least one touch area through the multiple first signal lines and the multiple data lines, and send data signals to the multiple pixel unit columns in the at least one touch area through the multiple data lines in the display stage and send common voltage signals to the common electrodes of the multiple pixel units in the at least one touch area through the multiple first signal lines.

[0011] Optionally, each of the at least one sensing and source integrated driving circuits includes at least one sensing sub-circuit, at least one source operational amplifier, and a multiplexer connected to the at least one sensing sub-circuit and the at least one source operational amplifier in a one-to-one correspondence, wherein the at least one sensing sub-circuit is also connected to the microcontroller, the multiplexer connected to the at least one sensing sub-circuit and the at least one source operational amplifier in a one-to-one correspondence is also respectively connected to the touch integrated circuit, the at least one sensing sub-circuit is connected to at least some of the multiple first signal lines through a corresponding multiplexer, and the at least one source operational amplifier is connected to the corresponding data lines in the at least one touch area through a corresponding multiplexer.

[0012] Optionally, the display panel also includes: a gate driving circuit, which is respectively connected to the touch integrated circuit and the multiple pixel unit rows in the display area, and is configured to provide gate driving signals to the multiple pixel unit rows in the display panel through multiple gate lines based on the gate voltage signal output by the touch integrated circuit in the display stage, and to provide second redundant parasitic capacitor signals to the multiple pixel unit rows in the display panel through multiple gate lines in the touch stage; and at least one source driving circuit, which is connected to the microcontroller and is configured to provide data signals to the multiple pixel unit columns in the at least one non-touch area through multiple data lines under the control of the microcontroller in the display stage.

[0013] Optionally, the power management integrated circuit is also connected to the at least one source driving circuit, and is configured to provide a common voltage signal to each pixel unit in the at least one non-touch area through the at least one source driving circuit via the second signal line during the display stage; and the timing control register is also configured to output a gate enable signal to the touch integrated circuit during the display stage, so that the touch integrated circuit outputs a gate voltage signal based on the gate enable signal.

[0014] Optionally, the touch stage corresponds to the low level stage of the time synchronization signal of the display panel, the high level stage of the time synchronization signal corresponds to the display stage of the display panel, the pulse width modulation wave is the touch detection signal of the display panel and its period is smaller than the period of the time synchronization signal, and the touch enable signal corresponds to the falling edge of the time synchronization signal.

[0015] Optionally, the area of ​​the at least one touch area is 1 / 4 of the area of ​​the display area, the at least one touch area is located on a side of the display area close to the edge of the display panel, the at least one touch button is located at any position in the at least one touch area, and the multiple touch buttons include a screen parameter menu, and the screen parameter menu includes at least a brightness adjustment bar and a contrast adjustment bar.

[0016] According to another aspect of the present disclosure, a display device is provided, which includes the display panel described above and a peripheral driving circuit for driving the display panel.

[0017] According to another aspect of the present disclosure, a method for driving a display panel is also provided, wherein the display panel displays an area, the display area includes at least one touch area and at least one non-touch area, each of the at least one touch area includes a touch button, and the driving method includes: touching a touch button in the at least one touch area in the display area of ​​the display panel; and based on touching the touch button, displaying a predetermined screen capable of touch operation in the at least one touch area, wherein the predetermined screen includes multiple touch buttons.

[0018] Optionally, the driving method also includes: in the touch stage, the timing control register outputs a touch enable signal and a gate enable signal; the microcontroller outputs a touch clock synchronization signal and a pulse width modulation wave under the control of the touch enable signal; the power management integrated circuit outputs a common voltage signal; and the touch integrated circuit outputs a first redundant parasitic capacitance signal based on the pulse width modulation wave and the common voltage signal, and a second redundant parasitic capacitance signal based on the gate enable signal under the control of the touch clock synchronization signal.

[0019] Optionally, the driving method also includes a touch stage, wherein detecting the touch of the at least one touch button and the multiple touch keys of the predetermined screen includes: respectively inputting the first redundant parasitic capacitance signal to the common electrode and data line of each pixel unit of the at least one touch area of ​​the display panel through a multiplexer and multiple first signal lines connected to at least one sensing sub-circuit, and through a multiplexer connected to at least one source operational amplifier; inputting the second redundant parasitic capacitance signal to the gate line of each pixel unit of the at least one touch area of ​​the display panel through a gate driving circuit; and the at least one sensing sub-circuit senses the touch of at least one touch button in the at least one touch area and the multiple touch keys in the predetermined screen through the multiple first signal lines via the corresponding multiplexer based on the touch clock synchronization signal and the pulse width modulation wave output by the microcontroller, and sends the touch signal to the microcontroller.

[0020] Optionally, the driving method also includes: in the display stage, the timing control register outputs a display enable signal and a gate enable signal; the microcontroller outputs a time synchronization signal and the pulse width modulation wave under the control of the display enable signal; the power management integrated circuit outputs the common voltage signal; and the touch control integrated circuit outputs the common voltage signal provided by the power management integrated circuit under the control of the time synchronization signal, and outputs a gate voltage signal under the control of the gate enable signal.

[0021] Optionally, in the display stage, it also includes: providing a common voltage signal from the touch integrated circuit to the common electrode of each pixel unit in at least one touch area of ​​the display panel through a multiplexer and a plurality of first signal lines connected to the at least one sensing sub-circuit, and providing data signals to multiple pixel unit columns in at least one touch area of ​​the display panel through a plurality of data lines; a gate drive circuit provides gate drive signals to multiple pixel unit rows in the display panel through a plurality of gate lines based on the gate voltage signal output by the touch integrated circuit; at least one source drive circuit provides data signals to multiple pixel unit columns in at least one non-touch area of ​​the display panel through a plurality of data lines under the control of a time synchronization signal provided by the microcontroller; and a power management integrated circuit also provides a common voltage signal to each pixel unit in the at least one non-touch area through the at least one source drive circuit via a second signal line.

[0022] Optionally, the touch stage corresponds to a low-level stage of a time synchronization signal of the display panel, the display stage corresponds to a high-level stage of the time synchronization signal, the pulse width modulation wave is a touch detection signal of the display panel and its period is smaller than the period of the time synchronization signal, the touch enable signal corresponds to a falling edge of the time synchronization signal, and the display enable signal corresponds to a rising edge of the time synchronization signal.

[0023] Optionally, the driving method further comprises uniformly adjusting the brightness of the at least one touch area and the brightness of the at least one non-touch area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a display panel according to an embodiment of the present disclosure;

[0025] Figure 2 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

[0026] Figure 3A is a schematic structural diagram of sensing partitions of a touch area according to an embodiment of the present disclosure;

[0027] Figure 3B is a schematic structural diagram of a pixel unit in a touch area according to an embodiment of the present disclosure;

[0028] Figure 4 is a flow chart of a method for driving a display panel according to an embodiment of the present disclosure; and

[0029] Figure 5 4 is a driving timing diagram of a display panel according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] In order to solve the cumbersome operation problems caused by the physical buttons of the OSD menu of the current display, improve user work efficiency (such as quickly switching application scenarios), realize the true borderless design of the product and increase the touch experience, the present disclosure provides a touch display solution that adds a local touch area to the display panel to replace the OSD menu. Specifically, the present disclosure adds a touch design to the display panel, that is, adds a touch function circuit design to the circuit, and establishes a touch function in a part of the conventional display, such as the 1 / 4 area on the right side of the display, thereby replacing the OSD physical buttons and increasing the user's touch function experience. At the same time, compared with full-screen touch displays, local touch displays have obvious cost advantages, a wider range of uses, higher market value, and can quickly realize product applications.

[0031] According to one aspect of the present disclosure, a display panel is provided. Figure 1 FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present disclosure. Figure 1 As shown, the display panel 10 includes a display area, and the display area includes at least one touch area 11 and at least one non-touch area 12. At least one touch area 11 is configured to display at least one touch button 13 when touched. The at least one touch button 13 is configured to display a predetermined screen capable of touch operation in the at least one touch area 11 when touched. The predetermined screen capable of touch operation (screen menu, for example, OSD menu) may include a plurality of touch keys to adjust parameters of the display panel 10 by touch. That is, the display area of ​​the display panel 10 may be divided into at least two display areas, one of which may be the touch area 11, in which touch operation may be performed; and the other may be the non-touch area 12, in which only conventional display may be performed, but no touch operation may be performed. The at least one touch button 13 and the predetermined screen comprising a plurality of touch keys may drive the display area to display by adjusting the control information in the memory by touch, for example, displaying brightness changes. Optionally, the area of ​​the at least one touch region 11 may be 1 / 4 of the area of ​​the display region, and the at least one touch region 11 may be located on one side of the display region close to the edge of the display panel.

[0032] At least one touch area 11 is configured to display a predetermined screen (for example, a screen control menu) that can be touch-operated when touched. Since the touch area 11 can be touch-operated, the present disclosure can replace the OSD physical buttons and use a touch menu to adjust the parameters of the display panel (for example, brightness, contrast, etc.), thereby improving the user's functional experience. Furthermore, the parameter adjustment method of the screen menu can also be set in the form of a progress bar to further improve the user's functional experience. In addition, the screen menu can also include other function buttons, such as handwritten text input, function prompts, and other buttons. By adopting the corresponding control algorithm, the touch area 11 can implement any operation that can be implemented by the touch panel in the relevant technology.

[0033] Optionally, the display panel 10 further includes: a timing control register TCON (Timer Control Register) 22, a microcontroller MCU (Microprogrammed Control Unit) 23, a power management integrated circuit 25 and a touch integrated circuit TPIC (Touch Integrated Circuit For Panel) 24, which are used to realize the display function of the non-touch area and the touch display function of the touch area of ​​the present disclosure. Figure 1 and Figure 5 As shown, the timing control register 22 is configured to output the touch enable signal Touch_EN and the gate enable signal GATE_EN during the touch stage (for example, the low level stage of the time synchronization signal Tsync of the display panel). The microcontroller 23 is configured to output the touch clock synchronization signal Touch sync and the pulse width modulation wave PWM under the control of the touch enable signal Touch_EN. The power management integrated circuit 25 is configured to output a common voltage signal. The touch integrated circuit 24 is configured to output a first redundant parasitic capacitance signal VCOM_M based on the pulse width modulation PWM wave and the common voltage signal under the control of the touch clock synchronization signal Touch sync, and output a second redundant parasitic capacitance signal GATE_M based on the gate enable signal GATE_EN. The first redundant parasitic capacitance signal VCOM_M and the second redundant parasitic capacitance signal GATE_M are used to eliminate the parasitic capacitance on the display panel. Typically, the display panel is provided with a time synchronization signal Tsync. In the present disclosure, the high level phase of the time synchronization signal Tsync is used as the display phase, and the low level phase of the time synchronization signal Tsync is used as the touch phase to explain the present disclosure in detail, but the present disclosure is not limited thereto.

[0034] Figure 2 FIG. 1 is a schematic diagram of a structure of a display panel according to an embodiment of the present disclosure. Figure 2As shown, the display panel 10 further includes a plurality of pixel units 21 and a plurality of first signal lines 31 arranged in a plurality of rows and columns in the display area. Figure 2 Only a plurality of pixel units 21 arranged in multiple rows and columns in the touch area 11 of the display panel 10 are shown. However, it is known that a plurality of pixel units 21 arranged in multiple rows and columns are also provided in the non-touch area 12 .

[0035] At least one touch area 11 can be divided into a plurality of sensing partitions 14 (sensing blocks). Each of the plurality of sensing partitions 14 includes a selected number of adjacent pixel units 21, and the plurality of sensing partitions 14 correspond to a plurality of first signal lines 31 one by one, and the common electrodes of the pixel units in each sensing partition 14 are connected to the corresponding first signal lines 31. Figure 3A is a schematic structural diagram of a sensing zone of a touch area according to an embodiment of the present disclosure, Figure 3B FIG. 1 is a schematic diagram of a pixel unit in a touch area according to an embodiment of the present disclosure. Figure 3A As shown, the touch area 11 includes 45x10 sensing partitions 14. In the display stage, a common voltage signal is provided to each pixel unit in a corresponding sensing partition 14 through one of the multiple first signal lines 31. In the present disclosure, in the display stage, a common voltage signal is provided to one sensing partition 14 through one first signal line 31, that is, the number of sensing partitions 14 in the touch area 11 is equal to the number of first signal lines 31. That is to say, in the touch area 11, the common electrode (common voltage layer) of each pixel unit 21 in each of the multiple sensing partitions 14 can be formed as one piece, and the common electrodes of each sensing partition 14 are independent of each other, so a common voltage signal needs to be provided to each sensing partition 14 separately. As shown in FIG. Figure 3B As shown, the left diagram shows that a pixel unit may include three sub-pixels of red (R), green (G) and blue (B), and the right diagram shows the corresponding cross-sectional structure diagram, which includes a glass substrate, a common electrode layer (VCOM) layer, a pixel unit and a color film substrate arranged in sequence.

[0036] Optionally, the display panel 10 further includes a second signal line 32, and the plurality of pixel units 21 in at least one non-touch area 12 are all connected to the second signal line 32. Figure 2 That is to say, in at least one non-touch area 12, the common voltage layer of each pixel unit 21 can be formed in one piece, and only one common voltage signal needs to be provided.

[0037] Optionally, the display panel 10 further includes at least one sensing and source integrated driving circuit SRIC (Source Driver & touch function integrated circuit) 26. Figure 2As shown, the at least one sensing and source integrated driving circuit 26 is connected to the microcontroller 23 and the touch integrated circuit 24, and is respectively connected to each pixel unit in the plurality of sensing partitions 14 through a plurality of first signal lines 31, and is configured to sense the touch of each of the plurality of sensing partitions 14 (including at least one touch button and a plurality of touch keys in a predetermined screen) through a plurality of first signal lines 31 based on the touch clock synchronization signal Touch sync and the pulse width modulation wave PWM output by the microcontroller 23 during the touch stage, and to send the first redundant parasitic capacitance signal VCOM_M to the plurality of pixel units 21 in the at least one touch area 11 through the plurality of first signal lines 31 and the plurality of data lines 34. In addition, during the display stage, the at least one sensing and source integrated driving circuit 26 can also send data signals to the plurality of pixel unit columns in the at least one touch area 11 through the plurality of data lines, and send common voltage signals to the common electrodes of the plurality of pixel units 21 in the at least one touch area 11 through the plurality of first signal lines 31. That is, the at least one sensing and source integrated driving circuit 26 integrates the sensing function and the source driving function.

[0038] Specifically, Figure 2 As shown, each of the at least one sensing and source integrated driving circuit 26 includes at least one sensing subcircuit 261, at least one source operational amplifier 262, and a multiplexer 263 connected to the at least one sensing subcircuit 261 and the at least one source operational amplifier 262 in a one-to-one correspondence. The at least one sensing subcircuit 261 is also connected to the microcontroller 23. The multiplexers 263 connected to the at least one sensing subcircuit 261 and the at least one source operational amplifier 262 in a one-to-one correspondence are also respectively connected to the touch control integrated circuit 24. At least one sensing subcircuit 261 is connected to at least some of the plurality of first signal lines 31 through corresponding multiplexers 263, for sensing touch signals in each sensing partition 14, and then determining the touch position. At least one source operational amplifier 262 is connected to the corresponding data line in at least one touch control area 11 through a corresponding multiplexer 263. Figure 2 The display panel 10 is shown to include two sensing and source integrated driving circuits SRIC 7 and SRIC 8. The number of sensing and source integrated driving circuits can be set to other numbers as needed. The process of using at least one sensing and source integrated driving circuit 26 for touch sensing and source driving will be described in detail below.

[0039] Optionally, the display panel further includes a gate driving circuit 28 and at least one source driving circuit 27. Figure 2As shown, the gate driving circuit GIP / GOP (Gate In Panel / Gate On Panel) 28 is connected to the touch integrated circuit 24, and is respectively connected to multiple pixel unit rows in the display panel through multiple gate lines 33, and is configured to output a gate voltage signal GATE based on the touch integrated circuit 24 during the display phase.

[0040] The gate driving signals are respectively provided to the multiple pixel unit rows in the display panel through the multiple gate lines, and the second redundant parasitic capacitor signals GATE_M are respectively provided to the multiple pixel unit rows in the display panel through the multiple gate lines in the touch stage. At least one source driving circuit 27 is connected to the microcontroller 23, and is connected to the multiple pixel units in at least one non-touch area 12 through the multiple data lines 34, and is configured to send source driving signals to the multiple pixel unit columns in the non-touch area 12 based on the data signal (DATA) in the display stage. Figure 2 The display panel includes flip chip thin film integrated circuits COF1-COF6, which are used as source driving circuits for providing source driving signals to each pixel unit column in at least one non-touch area 12. The number of source driving circuits 27 can be set to other numbers as needed.

[0041] Optionally, the power management integrated circuit 25 of the display panel is further connected to at least one source driving circuit 27, and is configured to provide a common voltage signal to each pixel unit in at least one non-touch area 12 through at least one source driving circuit 27 via a second signal line 32 during the display phase, such as Figure 2 The timing control register 22 is also connected to the touch control integrated circuit 24 and is configured to output a gate enable signal GATE_EN to the touch control integrated circuit 24 in the display phase, so that the touch control integrated circuit 24 outputs a gate voltage signal GATE based on the gate enable signal GATE_EN.

[0042] Optionally, the area of ​​at least one touch area 11 may be 1 / 4 of the area of ​​the display area, and may be located on one side of the display area close to the edge of the display panel, such as Figure 1 Optionally, as required, the proportion of the area of ​​the touch area 11 in the display area can be set to other values, and can also be located at other positions in the display area.

[0043] like Figure 5As shown, the microcontroller 23 can output the touch clock synchronization signal Touch sync under the control of the touch enable signal Touch_EN. The touch stage corresponds to the low level stage of the time synchronization signal Tsync of the display panel, and the display stage corresponds to the high level stage of the time synchronization signal Tsync of the display panel. PWM is used as a touch detection signal, which is a periodic square wave signal and its period is less than the period of the time synchronization signal Tsync. In the display stage, the timing control register 22, the microcontroller 23, the touch integrated circuit 24, and the sensing and source integrated drive circuit 26 do not perform the touch display function, but only perform the normal display function.

[0044] like Figure 1 As shown, the timing control register TCON 22, the microcontroller MCU 23, the touch integrated circuit TPIC 24 and the power management integrated circuit PMIC 25 send the touch ADC (Analog to Digital Converter) signal to the front-end system (such as a display function control module, etc.) through the connection port CNT for display adjustment.

[0045] The present disclosure adds a touch control design to the display panel, that is, adds a touch control function circuit design to the circuit, and establishes a touch control function in a part of the conventional display, thereby replacing the OSD physical buttons and increasing the user's touch control function experience. At the same time, compared with the full-screen touch display, the partial touch display has obvious cost advantages, a wider range of applications, a higher market value, and can quickly realize product applications.

[0046] According to one aspect of the present disclosure, a display device is also provided, which includes the display panel described above and a peripheral driving circuit for driving the display panel. The display device of the present disclosure may be, for example, an LCD (Liquid Crystal Display) touch display device. By adopting the above display panel, it is possible to replace the OSD physical buttons and increase the user's touch function experience, and it has obvious cost advantages, a wider range of applications, a higher market value, and can quickly realize product applications.

[0047] According to another aspect of the present disclosure, a method for driving a display panel is also provided. Figure 4 is a flow chart of a method for driving a display panel according to an embodiment of the present disclosure, Figure 5 is a driving timing diagram of a display panel according to an embodiment of the present disclosure, and the following reference is made to Figure 2 , Figure 4 and Figure 5 The driving method of the display panel disclosed in the present invention is described in detail. Figure 4 As shown, the driving method of the present disclosure includes steps S110 to S120.

[0048] In step S110, a touch button in at least one touch area in the display area of ​​the display panel is touched. Specifically, in this stage, a touch button in at least one touch area in the display area is touched, thereby generating a touch signal for the touch button.

[0049] In step S120, based on the touch of the touch button, a predetermined screen capable of touch operation is displayed in at least one touch area. Optionally, the predetermined screen includes multiple touch buttons. Specifically, at this stage, based on the received touch signal, a predetermined screen including multiple touch buttons, such as a screen menu, can be displayed in at least one touch area. In addition, during the process of displaying the predetermined screen, the display screen of the non-touch area does not change.

[0050] The following references Figure 2 , Figure 4 and Figure 5 , to describe in detail the driving methods of the display panel in the touch stage and the display stage of the present invention.

[0051] In the touch control stage of the display panel, first, the timing control register 22 outputs the touch enable signal Touch_EN and the gate enable signal GATE_EN. Then, under the control of the touch enable signal Touch_EN, the microcontroller 23 outputs the touch clock synchronization signal Touch sync and the pulse width modulation wave PWM. Then, the power management integrated circuit 25 outputs the common voltage signal. Then, under the control of the touch clock synchronization signal Touch sync, the touch integrated circuit 24 outputs the first redundant parasitic capacitance signal VCOM_M based on the common voltage signal and the pulse width modulation wave PWM, and outputs the second redundant parasitic capacitance signal GATE_M based on the gate enable signal GATE_EN. Figure 5 As shown, in the low level phase V_Blanking of the time synchronization signal Tsync, the first redundant parasitic capacitance signal VCOM_M in the form of a square wave is output to SRIC7 and SRIC8 through the touch integrated circuit 24. The first redundant parasitic capacitance signal VCOM_M in the form of a square wave can be formed by superimposing a DC common voltage signal and a pulse width modulation wave PWM. The second redundant parasitic capacitance signal GATE_M is generated by the touch integrated circuit based on the gate enable signal GATE_EN. The first redundant parasitic capacitance signal VCOM_M and the second redundant parasitic capacitance signal GATE_M are used to eliminate the parasitic capacitance on the display panel.

[0052] Next, the first redundant parasitic capacitance signal VCOM_M is input to the common electrode and data line 34 of each pixel unit of at least one touch area of ​​the display panel through the multiplexer 263 and the multiple first signal lines 31 connected to at least one sensing sub-circuit 261, and through the multiplexer 263 connected to at least one source operational amplifier 262. Then, the second redundant parasitic capacitance signal GATE_M is input to the gate line of each pixel unit of at least one touch area 11 of the display panel through the gate driving circuit 28. Finally, at least one sensing sub-circuit 261 senses the touch of at least one touch button 13 in at least one touch area 11 and multiple touch keys in a predetermined screen through the corresponding multiplexer through the multiple first signal lines 31 based on the touch clock synchronization signal Touch sync and the pulse width modulation wave PWM output by the microcontroller.

[0053] After sensing the touch of at least one touch button 13 in at least one touch area 11 and multiple touch keys in a predetermined screen, at least one sensing sub-circuit 261 generates a touch signal and sends the touch signal to the microcontroller 23 through a serial peripheral interface such as SPI (Serial Peripheral Interface). The microcontroller 23 then sends the touch signal to the front-end system through the SPI through the connection port CNT, thereby realizing parameter adjustment of the display panel.

[0054] In the display stage of the display panel, first, the timing control register 22 outputs the display enable signal Display_EN and the gate enable signal GATE_EN. Then, the microcontroller 23 outputs the time synchronization signal Tsync under the control of the display enable signal Display_EN. Then, the power management integrated circuit 25 outputs the common voltage signal. Then, the touch control integrated circuit 24 outputs the common voltage signal VCOM1 provided by the power management integrated circuit 25 under the control of the time synchronization signal Tsync, and outputs the gate voltage signal GATE under the control of the gate enable signal GATE_EN.

[0055] Next, the display of the display screen of the display panel is realized by performing the following operations in parallel: through the multiplexer 263 connected to at least one sensing sub-circuit 261 and the multiple first signal lines 31, and through the multiplexer 263 connected to at least one source operational amplifier 262, the common voltage signal VCOM1 and the data signal DATA from the touch integrated circuit 24 are respectively input to the common electrode and the data line of each pixel unit in at least one touch area of ​​the display panel; the gate driving circuit 28 provides a gate driving signal to a plurality of pixel unit rows in the display panel through a plurality of gate lines based on the gate voltage signal GATE output by the touch integrated circuit 24; at least one source driving circuit 27 sends the data signal DATA to a plurality of pixel unit columns in at least one non-touch area 11 of the display panel through the data line under the control of the time synchronization signal Tsync provided by the microcontroller 23; and the power management integrated circuit 25 also provides a common voltage signal VCOM2 to each pixel unit in at least one non-touch area 12 through the second signal line 32 through the at least one source driving circuit 27. The common voltage signal VCOM1 and the common voltage signal VCOM2 may be equal and may both be direct current signals.

[0056] like Figure 5 As shown, in the present disclosure, based on the time synchronization signal Tsync of the display panel, the working process of the display panel is divided into the touch stage Touch (which corresponds to the V_Blanking stage) and the display stage Display. The touch stage corresponds to the low level stage of the time synchronization signal of the display panel, and the display stage corresponds to the high level stage of the time synchronization signal. Figure 5 It can be seen that the touch detection signal PWM is a periodic square wave signal and its period is smaller than the period of the time synchronization signal. The touch enable signal corresponds to the falling edge of the time synchronization signal, and the display enable signal Display_EN corresponds to the rising edge of the time synchronization signal.

[0057] In the present disclosure, it should be noted that in the first touch stage, the touch button 13 is touched, and in the subsequent first display stage, a predetermined screen including the touch button is displayed in the touch area 11, while the previous display screen is still displayed in the non-touch area without change. In the following second touch stage, the touch button in the predetermined screen is touched, and in the subsequent second display stage, the display screen after the parameters of the display panel are adjusted is displayed in the touch area 11 and the non-touch area 12, and the predetermined screen including the touch button can be set to be automatically hidden. The display of the touch button 13 and the predetermined screen of the touch button can be displayed by calling the corresponding display screen data pre-stored in the memory.

[0058] At the same time, if Figure 5As shown, in the touch stage, the first redundant parasitic capacitor signal GATE_M (high level VGL_H and low level VGL_L) in the form of a periodic square wave can be provided by the gate drive circuit to eliminate part of the parasitic capacitor of the display panel. In this touch stage, the amplitude of the first redundant parasitic capacitor signal GATE_M is less than the amplitude of the gate drive signal (high level VGH and low level VGL) provided by the gate drive circuit in the display stage. The first redundant parasitic capacitor signal GATE_M in the touch stage and the gate voltage signal GATE in the display stage are both generated by the touch integrated circuit 24 based on the gate enable signal GATE_EN, but the amplitudes of the two are different. Among them, the first redundant parasitic capacitor signal GATE_M in the touch stage is not enough to turn on the gate of the transistor in the display panel.

[0059] Optionally, the driving method of the present disclosure further includes uniformly adjusting the brightness of at least one touch area and the brightness of at least one non-touch area, for example, uniformly adjusting the brightness of the display panel by brightness compensation, zoned precise color control, etc.

[0060] In the present disclosure, by adopting the above-mentioned display panel and its driving method, it is possible to replace the OSD physical buttons and increase the user's touch function experience, and reduce its cost, expand its scope of use, have a higher market value, and be able to quickly realize product applications.

[0061] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display panel comprising a display area, wherein the display area comprises at least one touch area and at least one non-touch area, wherein: The display panel further comprises at least one touch button located in the at least one touch area, wherein the at least one touch button is configured to display a predetermined picture capable of touch operation in the at least one touch area when touched; The predetermined screen includes a plurality of touch buttons; as well as The display panel further includes: A timing control register configured to output a touch enable signal and a gate enable signal during a touch control phase; a microcontroller configured to output a touch clock synchronization signal and a pulse width modulation wave under the control of the touch enable signal; a power management integrated circuit configured to output a common voltage signal; and A touch control integrated circuit is configured to output a first redundant parasitic capacitance signal based on the pulse width modulation wave and the common voltage signal under the control of the touch control clock synchronization signal, and to output a second redundant parasitic capacitance signal based on the gate enable signal.

2. The display panel according to claim 1, further comprising a plurality of pixel units and a plurality of first signal lines arranged in a plurality of rows and columns in the display area, wherein: Each of the at least one touch area is divided into a plurality of sensing partitions, each of the plurality of sensing partitions includes a selected number of adjacent pixel units, the plurality of sensing partitions correspond one-to-one to the plurality of first signal lines, respectively, and the common electrodes of the pixel units in each sensing partition are respectively connected to the corresponding first signal lines. 3 . The display panel according to claim 2 , further comprising a second signal line connected to a common electrode of each pixel unit in the at least one non-touch area.

4. The display panel according to claim 3, wherein: The common electrode of each pixel unit in each of the plurality of sensing partitions is formed in one piece, the common electrodes of the plurality of sensing partitions are independent of each other, and the common electrode of each pixel unit in the at least one non-touch area is formed in one piece.

5. The display panel according to claim 4, further comprising: At least one sensing and source integrated driving circuit is connected to the microcontroller and the touch integrated circuit and is respectively connected to each pixel unit in the multiple sensing partitions through the multiple first signal lines. It is configured to sense the touch of the at least one touch button and the multiple touch keys in the predetermined screen through the multiple first signal lines based on the touch clock synchronization signal and the pulse width modulation wave output by the microcontroller in the touch stage and send the touch signal to the microcontroller, and send the first redundant parasitic capacitor signal to the multiple pixel units in the at least one touch area through the multiple first signal lines and the multiple data lines respectively, and send data signals to the multiple pixel unit columns in the at least one touch area through the multiple data lines in the display stage and send common voltage signals to the common electrodes of the multiple pixel units in the at least one touch area through the multiple first signal lines.

6. The display panel according to claim 5, wherein: Each of the at least one sensing and source integrated driving circuits comprises at least one sensing sub-circuit, at least one source operational amplifier, and a multiplexer connected to the at least one sensing sub-circuit and the at least one source operational amplifier in a one-to-one correspondence, wherein: The at least one sensing sub-circuit is also connected to the microcontroller, and the multiplexers connected to the at least one sensing sub-circuit and the at least one source operational amplifier in a one-to-one correspondence are also respectively connected to the touch integrated circuit, the at least one sensing sub-circuit is connected to at least some of the multiple first signal lines through corresponding multiplexers, and the at least one source operational amplifier is connected to corresponding data lines in the at least one touch area through corresponding multiplexers.

7. The display panel according to claim 6, further comprising: a gate driving circuit, which is connected to the touch control integrated circuit and the plurality of pixel unit rows in the display area, respectively, and is configured to provide gate driving signals to the plurality of pixel unit rows in the display panel through the plurality of gate lines based on the gate voltage signal output by the touch control integrated circuit in the display stage, and to provide second redundant parasitic capacitor signals to the plurality of pixel unit rows in the display panel through the plurality of gate lines in the touch control stage; and At least one source driving circuit is connected to the microcontroller and is configured to provide data signals to a plurality of pixel unit columns in the at least one non-touch area through a plurality of data lines under the control of the microcontroller during a display phase.

8. The display panel according to claim 6, wherein: The power management integrated circuit is also connected to the at least one source driving circuit and is configured to provide a common voltage signal to each pixel unit in the at least one non-touch area through the at least one source driving circuit via the second signal line during the display stage; as well as The timing control register is further configured to output a gate enable signal to the touch control integrated circuit in a display phase, so that the touch control integrated circuit outputs a gate voltage signal based on the gate enable signal.

9. The display panel according to claim 1, wherein: The touch stage corresponds to the low level stage of the time synchronization signal of the display panel, the high level stage of the time synchronization signal corresponds to the display stage of the display panel, the pulse width modulation wave is the touch detection signal of the display panel and its period is smaller than the period of the time synchronization signal, and the touch enable signal corresponds to the falling edge of the time synchronization signal.

10. The display panel according to claim 1, wherein: The area of ​​the at least one touch area is 1 / 4 of the area of ​​the display area, the at least one touch area is located on a side of the display area close to an edge of the display panel, and the at least one touch button is located at any position in the at least one touch area, and The plurality of touch buttons include a screen parameter menu, and the screen parameter menu includes at least a brightness adjustment bar and a contrast adjustment bar.

11. A display device, comprising the display panel according to any one of claims 1 to 10 and a peripheral driving circuit for driving the display panel.

12. A method for driving a display panel, wherein: The display panel displays an area, the display area includes at least one touch area and at least one non-touch area, each of the at least one touch area includes a touch button, and the driving method includes: Touching a touch button located in at least one touch area in a display area of ​​the display panel; and Based on touching the touch button, displaying a predetermined screen capable of touch operation in the at least one touch area, wherein the predetermined screen includes a plurality of touch buttons; The driving method further comprises, in the touch control stage, The timing control register outputs a touch enable signal and a gate enable signal; The microcontroller outputs a touch control clock synchronization signal and a pulse width modulation wave under the control of the touch control enable signal; The power management integrated circuit outputs a common voltage signal; and Under the control of the touch control clock synchronization signal, the touch control integrated circuit outputs a first redundant parasitic capacitance signal based on the pulse width modulation wave and the common voltage signal, and outputs a second redundant parasitic capacitance signal based on the gate enable signal.

13. The driving method according to claim 12, further comprising, in a touch control phase, detecting a touch on the at least one touch button and a plurality of touch keys of the predetermined screen, wherein: Detecting the touch of the at least one touch button and the plurality of touch keys of the predetermined screen includes: Inputting the first redundant parasitic capacitance signal to the common electrode and the data line of each pixel unit of the at least one touch control area of ​​the display panel respectively through a multiplexer connected to at least one sensing subcircuit and a plurality of first signal lines, and through a multiplexer connected to at least one source operational amplifier; Inputting the second redundant parasitic capacitance signal to the gate line of each pixel unit of the at least one touch control area of ​​the display panel through a gate driving circuit; and Based on the touch clock synchronization signal and pulse width modulation wave output by the microcontroller, the at least one sensing sub-circuit senses the touch of at least one touch button in the at least one touch area and the multiple touch keys in the predetermined screen through the multiple first signal lines via the corresponding multiplexer, and sends the touch signal to the microcontroller.

14. The driving method according to claim 13, further comprising, in the display phase, The timing control register outputs a display enable signal and a gate enable signal; The microcontroller outputs a time synchronization signal under the control of the display enable signal; The power management integrated circuit outputs the common voltage signal; and The touch control integrated circuit outputs a common voltage signal provided by the power management integrated circuit under the control of the time synchronization signal, and outputs a gate voltage signal under the control of the gate enable signal.

15. The driving method according to claim 14, wherein: The display stage also includes: Providing a common voltage signal from the touch control integrated circuit to a common electrode of each pixel unit of at least one touch control area of ​​the display panel through a multiplexer and a plurality of first signal lines connected to the at least one sensing sub-circuit, and providing data signals to a plurality of pixel unit columns of at least one touch control area of ​​the display panel through a plurality of data lines; The gate driving circuit provides gate driving signals to a plurality of pixel unit rows in the display panel through a plurality of gate lines based on the gate voltage signal output by the touch control integrated circuit; at least one source driving circuit provides data signals to a plurality of pixel unit columns in at least one non-touch area of ​​the display panel through a plurality of data lines under the control of a time synchronization signal provided by the microcontroller; and The power management integrated circuit also provides a common voltage signal to each pixel unit in the at least one non-touch area via the second signal line through the at least one source driving circuit.

16. The driving method according to claim 15, wherein: The touch stage corresponds to the low level stage of the time synchronization signal of the display panel, the display stage corresponds to the high level stage of the time synchronization signal, the pulse width modulation wave is the touch detection signal of the display panel and its period is smaller than the period of the time synchronization signal, the touch enable signal corresponds to the falling edge of the time synchronization signal, and the display enable signal corresponds to the rising edge of the time synchronization signal. 17 . The driving method according to claim 12 , further comprising uniformly adjusting the brightness of the at least one touch area and the brightness of the at least one non-touch area.

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