CN108509084B - Display panel, control method thereof and display device - Google Patents

Display panel, control method thereof and display device Download PDF

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Publication number
CN108509084B
CN108509084B CN201810319899.1A CN201810319899A CN108509084B CN 108509084 B CN108509084 B CN 108509084B CN 201810319899 A CN201810319899 A CN 201810319899A CN 108509084 B CN108509084 B CN 108509084B
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signal line
polarity
polarity data
source
data lines
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CN108509084A (en
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吴常志
孙莹
许育民
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the invention provides a display panel, a control method thereof and a display device, relates to the technical field of display, and can reduce the power consumption of the display panel. The display panel includes: a first input end of the pressure sensing sensor is connected to the first bias voltage signal line, and a second input end of the pressure sensing sensor is connected to the second bias voltage signal line; the gating circuit is used for switching between a first state and a second state, the first gating end and the third gating end are conducted in the first state, the second gating end and the fourth gating end are conducted in the second state, and the first gating end and the fourth gating end are conducted in the second state; the first switch unit is used for coupling the plurality of first polarity data lines with the first polarity signal line; and the plurality of second polarity data lines are coupled to the second polarity signal lines through the second switch units.

Description

Display panel, control method thereof and display device
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a control method thereof and a display device.
Background
Along with the development of touch display technology, besides the traditional touch technology capable of detecting a touch position, a pressure touch technology capable of detecting the magnitude of touch pressing pressure appears, more convenient man-machine interaction can be realized through pressure touch, and a pressure induction sensor is a necessary element for realizing pressure touch.
During the display process of the display panel, a separate bias voltage needs to be provided for the pressure sensor to drive the pressure-sensitive sensor to work normally, thereby increasing the power consumption of the display panel.
Disclosure of Invention
The embodiment of the invention provides a display panel, a control method thereof and a display device, which can reduce the power consumption of the display panel.
In one aspect, an embodiment of the present invention provides a display panel, including:
a first input end of the pressure sensing sensor is connected to a first bias voltage signal line, and a second input end of the pressure sensing sensor is connected to a second bias voltage signal line;
the gating circuit comprises a first gating end, a second gating end, a third gating end and a fourth gating end, wherein the first gating end is connected to the first bias voltage signal line, the second gating end is connected to the second bias voltage signal line, the third gating end is connected to the first polarity signal line, the fourth gating end is connected to the second polarity signal line, the gating circuit is used for switching between a first state and a second state, the first gating end and the third gating end are conducted in the first state, the second gating end and the fourth gating end are conducted, the first gating end and the fourth gating end are conducted in the second state, and the second gating end and the third gating end are conducted;
a plurality of data lines including a plurality of first polarity data lines and a plurality of second polarity data lines;
a first switch unit, through which the plurality of first polarity data lines are coupled to the first polarity signal line, for controlling on and off between the plurality of first polarity data lines and the first polarity signal line;
a second switch unit, through which the plurality of second polarity data lines are coupled to the second polarity signal line, for controlling on and off between the plurality of second polarity data lines and the second polarity signal line.
On the other hand, the embodiment of the invention also discloses a control method of the display panel,
the display panel includes:
a first input end of the pressure sensing sensor is connected to a first bias voltage signal line, and a second input end of the pressure sensing sensor is connected to a second bias voltage signal line;
the gating circuit comprises a first gating end, a second gating end, a third gating end and a fourth gating end, wherein the first gating end is connected to the first bias voltage signal line, the second gating end is connected to the second bias voltage signal line, the third gating end is connected to the first polarity signal line, the fourth gating end is connected to the second polarity signal line, the gating circuit is used for switching between a first state and a second state, the first gating end and the third gating end are conducted in the first state, the second gating end and the fourth gating end are conducted, the first gating end and the fourth gating end are conducted in the second state, and the second gating end and the third gating end are conducted;
a plurality of data lines including a plurality of first polarity data lines and a plurality of second polarity data lines;
a first switch unit, through which the plurality of first polarity data lines are coupled to the first polarity signal line, for controlling on and off between the plurality of first polarity data lines and the first polarity signal line;
a second switching unit, through which the plurality of second polarity data lines are coupled to the second polarity signal line, for controlling on and off between the plurality of second polarity data lines and the second polarity signal line;
the control method of the display panel comprises the following steps:
in the display stage of the nth frame, the first switch unit controls the plurality of first polarity data lines and the first polarity signal lines to be cut off, and the second switch unit controls the plurality of second polarity data lines and the second polarity signal lines to be cut off;
in the pressure sensing stage of the nth frame, the first switch unit controls conduction between the plurality of first polarity data lines and the first polarity signal lines, the second switch unit controls conduction between the plurality of second polarity data lines and the second polarity signal lines, and the gating circuit works in the first state;
in the display stage of the (n + 1) th frame, the first switch unit controls the plurality of first polarity data lines and the first polarity signal lines to be cut off, and the second switch unit controls the plurality of second polarity data lines and the second polarity signal lines to be cut off;
in the pressure sensing stage of the (n + 1) th frame, the first switch unit controls conduction between the plurality of first polarity data lines and the first polarity signal lines, the second switch unit controls conduction between the plurality of second polarity data lines and the second polarity signal lines, and the gating circuit works in the second state;
providing a first polarity signal to the first polarity data line and a second polarity signal to the second polarity data line in the nth frame, the first polarity signal and the second polarity signal having opposite polarities;
and in the (n + 1) th frame, providing the second polarity signal to the first polarity data line and providing the first polarity signal to the second polarity data line.
On the other hand, an embodiment of the present invention further provides a display device, including the display panel.
According to the display panel, the control method thereof and the display device, after the data line completes the function of charging the pixel electrode in the display stage, the data line is multiplexed as the signal line for providing the bias voltage for the pressure sensing sensor, so that the driving of the pressure sensing sensor can be assisted by the residual charge on the data line, the switching loss in the process of converting the internal voltage of the driving chip is reduced, and the power consumption is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic current flow diagram of the display panel of FIG. 1 in a pressure sensing phase of an nth frame;
FIG. 3 is a schematic current flow diagram of the display panel of FIG. 1 in a pressure sensing phase of an n +1 th frame;
FIG. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a connection relationship between the first polarity data lines in FIG. 4;
FIG. 6 is a schematic diagram illustrating the connection relationship of the second polarity data lines in FIG. 4;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a pressure-sensitive sensor in accordance with an embodiment of the present invention;
FIG. 10 is a schematic diagram of another embodiment of a pressure sensitive sensor in accordance with the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and an embodiment of the present invention provides a display panel, including: the pressure-sensitive sensor 1 includes a first input terminal IN1 of the pressure-sensitive sensor 1 connected to a first bias voltage signal line IN1, and a second input terminal IN2 of the pressure-sensitive sensor 1 connected to a second bias voltage signal line IN2, where it should be noted that the number of the pressure-sensitive sensors 1 is at least one, and the connection modes of the first input terminal IN1 and the second input terminal IN2 of each pressure-sensitive sensor 1 are the same; a gate circuit 2, the gate circuit 2 including a first gate terminal S1, a second gate terminal S2, a third gate terminal S3 and a fourth gate terminal S4, the first gate terminal S1 being connected to a first bias voltage signal line IN1, the second gate terminal S2 being connected to a second bias voltage signal line IN2, the third gate terminal S3 being connected to a first polarity signal line P1, the fourth gate terminal S4 being connected to a second polarity signal line P2, the gate circuit 2 being configured to switch between a first state IN which conduction is established between the first gate terminal S1 and the third gate terminal S3, i.e., the first polarity signal line P1 and the first bias voltage signal line IN1 is conducted, and a second state IN which conduction is established between the second polarity signal line P2 and the second bias voltage signal line IN2, the second gate terminal S2 and the fourth gate terminal S4, i.e., the second polarity signal line P2 and the second bias voltage signal line IN2, the second bias voltage signal line IN 828653 is conducted between the first polarity signal line P8653 and the second bias voltage signal line S8653, the second pass terminal S2 and the third pass terminal S3 are turned on, that is, the first polarity signal line P1 and the second bias voltage signal line IN2 are turned on; a plurality of data lines D including a plurality of first polarity data lines D1 and a plurality of second polarity data lines D2; a first switch unit 31, wherein the plurality of first polarity data lines D1 are coupled to the first polarity signal line P1 through the first switch unit 31, and the first switch unit 31 is configured to control on and off between the plurality of first polarity data lines D1 and the first polarity signal line P1; the second switch unit 32 is coupled to the second polarity signal line P2 through the second switch unit 32, and the second switch unit 32 is used for controlling on and off between the second polarity signal line P2 and the second polarity data lines D2.
Specifically, in the liquid crystal display panel, the driving voltage of the liquid crystal molecules cannot be fixed at a certain value and is not changed, otherwise, the liquid crystal molecules are polarized for a long time, and thus the optical rotation characteristic is gradually lost. Therefore, in order to avoid deterioration of the characteristics of the liquid crystal molecules, the driving voltage of the liquid crystal molecules must be changed in polarity, which requires dividing the voltage of the pixel electrode in the liquid crystal display panel into two polarities, one of positive polarity and the other of negative polarity. When the pixel electrode voltage is higher than the common electrode voltage, it is called positive polarity; when the pixel electrode voltage is lower than the common electrode voltage, it is called negative polarity. Regardless of the positive polarity or the negative polarity, a set of gray scales with the same brightness is obtained, so that when the absolute value of the voltage difference between the pixel electrode and the common electrode is fixed, the gray scales are expressed in a same mode. However, in both cases, the liquid crystal molecules are turned in the opposite directions, so that the above-described characteristic deterioration caused when the liquid crystal molecules are turned in a direction fixed all the time can be avoided. In the embodiment of the present invention, the first polarity data line D1 and the second polarity data line D2 are used for transmitting opposite polarity signals to the corresponding pixel electrodes in the same frame, for example, when the first polarity data line D1 transmits a positive polarity voltage signal, the second polarity data line D2 transmits a negative polarity voltage signal; when the first polarity data line D1 transmits a negative polarity voltage signal, the second polarity data line D2 transmits a positive polarity voltage signal. The display panel comprises a plurality of sub-pixels defined by a plurality of rows of scanning lines (not shown in the figure) and a plurality of columns of data lines D in a crossed and insulated manner, for example, the sub-pixels comprise red sub-pixels R, green sub-pixels G and blue sub-pixels B, each sub-pixel comprises a pixel electrode (not shown in the figure) and a thin film transistor (not shown in the figure), the pixel electrode in each sub-pixel is connected to the corresponding data line D through the thin film transistor, in the display process, the scanning lines provide scanning signals to enable the corresponding thin film transistors to be conducted line by line, and the data signals on the data lines D are transmitted to the corresponding pixel electrodes through the conducted thin film transistors to charge the pixel electrodes, so that the picture display is realized.
An embodiment of the present invention further provides a control method of a display panel, which is used for the display panel, and the control method of the display panel includes: in the display phase of the nth frame, the first switch unit 31 controls the plurality of first polarity data lines D1 and the first polarity signal line P1 to be cut off, and the second switch unit 32 controls the plurality of second polarity data lines D2 and the second polarity signal line P2 to be cut off, so that the pressure sensitive sensor 1 does not receive an input bias voltage signal and does not work, the driving chip supplies a data voltage to each data line D, and each pixel electrode is charged through the data line D; as shown IN fig. 2, fig. 2 is a schematic diagram illustrating a current flowing direction of the display panel IN fig. 1 during a pressure sensing phase of an nth frame, during the pressure sensing phase of the nth frame, the first switch unit 31 controls conduction between the plurality of first polarity data lines D1 and the first polarity signal line P1, and the second switch unit 32 controls conduction between the plurality of second polarity data lines D2 and the second polarity signal line P2, so that the gate circuit 2 operates IN a first state, i.e., the first polarity data line P1 and the first bias voltage signal line IN1 are conducted, and the second polarity data line P2 and the second bias voltage signal line IN2 are conducted; as shown in fig. 1, in the display phase of the (n + 1) th frame, the plurality of first polarity data lines D1 and the first polarity signal line P1 are controlled to be turned off between them by the first switching unit 31, and the plurality of second polarity data lines D2 and the second polarity signal line P2 are controlled to be turned off between them by the second switching unit 32; as shown IN fig. 3, fig. 3 is a schematic diagram illustrating a current flowing direction of the display panel IN fig. 1 during a pressure sensing phase of an n +1 th frame, during the pressure sensing phase of the n +1 th frame, the first switch unit 31 controls conduction between the plurality of first polarity data lines D1 and the first polarity signal line P1, the second switch unit 32 controls conduction between the plurality of second polarity data lines D2 and the second polarity signal line P2, the gating circuit 2 operates IN a second state, i.e., the second polarity signal line P2 and the first bias voltage signal line IN1 are conducted, and the first polarity signal line P1 and the second bias voltage signal line IN2 are conducted; in the nth frame, as shown in fig. 2, a first polarity signal, for example, a positive polarity signal, is supplied to the first polarity data line D1, the positive polarity signal is transmitted to the pixel electrode of the corresponding sub-pixel such that the corresponding pixel electrode has a positive polarity (the voltage at which the pixel electrode has the positive polarity is denoted by "+"), a second polarity signal, for example, a negative polarity signal, is supplied to the second polarity data line D2, the negative polarity signal is transmitted to the pixel electrode of the corresponding sub-pixel such that the corresponding pixel electrode has a negative polarity (the voltage at which the pixel electrode has the negative polarity is denoted by "-"), and the first polarity signal and the second polarity signal have opposite polarities; in the (n + 1) th frame, as shown in fig. 3, the second polarity signal, e.g., a negative polarity signal, is supplied to the first polarity data line D1, and the first polarity signal, e.g., a positive polarity signal, is supplied to the second polarity data line D2.
Specifically, each frame time includes a display stage and a pressure sensing stage after the display stage, in the display stage, the pressure sensing sensor 1 does not operate, the driving chip outputs a data signal to each data line D, so that the data signal is transmitted to the corresponding pixel electrode, and the frame refresh of the frame is realized. For example, as shown in fig. 2, in the display phase of the nth frame, the first polarity data line D1 transmits a positive polarity signal, the second polarity data line D2 transmits a negative polarity signal, and after the display phase of the nth frame is finished, the pressure sensing phase of the nth frame is entered, and at this time, the driving chip provides the positive polarity signal to the first polarity data line D1 and provides the negative polarity signal to the second polarity data line D2, so that the current flows as follows: flows from the first polarity data line D1 to the first polarity signal line P1, flows from the first polarity signal line P1 to the third gate S3, flows from the third gate S3 to the first gate S1, flows from the first gate S1 to the first bias voltage signal line IN1, flows from the first bias voltage signal line IN1 to the first input terminal IN1 of the pressure-sensitive sensor 1, flows from the second input terminal IN2 of the pressure-sensitive sensor 1 to the second bias voltage signal line IN2, flows from the second bias voltage signal line IN2 to the second gate S1, flows from the second gate S2 to the fourth gate S4, flows from the fourth gate S4 to the second polarity signal line P2, flows from the second polarity signal line P2 to the second polarity data line D2, that is to realize the pressure-sensitive sensor 1 driving at the initial pressure-sensitive frame time, and the pressure-sensitive sensor 1 driving time, since the first polarity data line D1 has residual positive charges in the display period and the second polarity data line D2 has residual negative charges in the display period, the data lines can be regarded as a parallel connection of a plurality of small capacitors, which is equivalent to a relatively large capacitor, and the capacitor still has charges and does not need to be charged again at the moment of switching to the driving of the pressure-sensitive sensor 1 after the sub-pixel scanning of the display area is completed, so that the driving of the pressure-sensitive sensor 1 can be assisted by the charges remaining on the data lines, thereby reducing the switching loss during the internal voltage conversion of the driving chip, i.e., saving the power consumption. As shown in fig. 3, in the display phase of the (n + 1) th frame, the polarity of the pixel electrode is reversed, that is, the first polarity data line D1 transmits a negative polarity signal, the second polarity data line D2 transmits a negative polarity signal, and after the display phase of the (n + 1) th frame is finished, the pressure sensing phase of the (n + 1) th frame is entered, and at this time, the driving chip provides the negative polarity signal to the first polarity data line D1 and the positive polarity signal to the second polarity data line D2, so that the current flows: flows from the second polarity data line D2 to the second polarity signal line P2, from the second polarity signal line P2 to the fourth gate terminal S4, from the fourth gate terminal S4 to the first gate terminal S1, from the first gate terminal S1 to the first bias voltage signal line IN1, from the first bias voltage signal line IN1 to the first input terminal IN1 of the pressure-sensitive sensor 1, through the pressure-sensitive sensor 1, from the second input terminal IN2 to the second bias voltage signal line IN2 of the pressure-sensitive sensor 1, from the second bias voltage signal line IN2 to the second gate terminal S2, from the second gate terminal S2 to the third gate terminal S3, from the third gate terminal S3 to the first polarity signal line P1, from the first polarity signal line P1 to the first polarity data line D1, that is realized by the data line D5391, during the initial pressure-sensitive frame driving time of the pressure-sensitive sensor 1 +1, since the first polarity data line D1 has negative charges remaining in the display period and the second polarity data line D2 has positive charges remaining in the display period, the driving of the pressure-sensitive sensor 1 can be assisted by the charges remaining in the data lines, thereby reducing the switching loss during the voltage conversion inside the driving chip, i.e., saving power consumption. No matter what polarity signal is transmitted on each data line D, it can be ensured that when the pressure-sensitive sensor 1 operates, current flows from the first input terminal in1 of the pressure-sensitive sensor 1 to the second input terminal in2 of the pressure-sensitive sensor 1, so that the pressure-sensitive sensor 1 can operate normally.
According to the display panel and the control method thereof, after the data line completes the function of charging the pixel electrode in the display stage, the data line is multiplexed into the signal line for providing the bias voltage for the pressure sensing sensor, so that the driving of the pressure sensing sensor can be assisted by the residual charges on the data line, the switching loss in the process of converting the internal voltage of the driving chip is reduced, and the power consumption is saved.
Alternatively, as shown in fig. 1, the gate circuit 2 includes: a first switch transistor T1, having a first end connected to the first gate terminal S1, a second end connected to the fourth gate terminal S4, and a control end connected to the gate control signal line L1; a second switch transistor T2, having a first end connected to the first gate terminal S1, a second end connected to the third gate terminal S3, and a control end connected to the gate control signal line L1; a third switch transistor T3 having a first end connected to the second gate terminal S2, a second end connected to the fourth gate terminal S4, and a control end connected to the gate control signal line L1; a fourth switch transistor T4, having a first end connected to the second gate terminal S2, a second end connected to the third gate terminal S3, and a control end connected to the gate control signal line L1; the first switch tube T1 and the fourth switch tube T4 are P-type transistors, and the second switch tube T2 and the third switch tube T3 are N-type transistors; alternatively, the first switch transistor T1 and the fourth switch transistor T4 are N-type transistors, and the second switch transistor T2 and the third switch transistor T3 are P-type transistors.
Further, in the above control method, when the gating circuit 2 operates in the first state, the first control signal is provided to the gating control signal line L1, the first switch transistor T1 and the fourth switch transistor T4 are turned on in response to the first control signal, and the second switch transistor T2 and the third switch transistor T3 are turned off in response to the first control signal; when the gating circuit 2 operates in the second state, the second control signal is provided to the gating control signal line, the first switch transistor T1 and the fourth switch transistor T4 are turned off in response to the second control signal, and the second switch transistor T2 and the third switch transistor T3 are turned on in response to the second control signal.
Specifically, taking the first switch tube T1 and the fourth switch tube T4 as P-type transistors, and the second switch tube T2 and the third switch tube T3 as N-type transistors as an example, when the gating control signal line L1 outputs a low level, the first switch tube T1 and the fourth switch tube T4 are controlled to be turned on, and simultaneously the second switch tube T2 and the third switch tube T3 are turned off, and the gating circuit 2 operates in the first state; when the gate control signal line L1 outputs a high level, that is, the first switch transistor T1 and the fourth switch transistor T4 are turned off, and the second switch transistor T2 and the third switch transistor T3 are turned on, at this time, the gate circuit 2 operates in the first state, the first gate terminal S1 and the third gate terminal S3 are turned on, and the second gate terminal S2 and the fourth gate terminal S4 are turned on. Therefore, only one gate control signal line L1 is required to control the gate circuit 2, so that the gate circuit 2 can be switched between the first state and the second state.
Alternatively, as shown in fig. 4, fig. 5 and fig. 6, fig. 4 is a schematic structural diagram of another display panel in an embodiment of the present invention, fig. 5 is a schematic connection diagram of first polarity data lines in fig. 4, fig. 6 is a schematic connection diagram of second polarity data lines in fig. 4, the plurality of first polarity data lines include a plurality of first polarity data line groups D10, each first polarity data line group D10 includes n first polarity data lines D1, and in this embodiment, n is taken as an example to be described; the plurality of second polarity data lines includes a plurality of second polarity data line groups D20, each of the second polarity data line groups D20 includes n second polarity data lines D2; the display panel further includes a first demultiplexer 41 corresponding to each first polarity data line group D10, each first demultiplexer 41 including an input terminal and n output terminals, the n output terminals of the first demultiplexer 41 being connected to the corresponding n first polarity data lines D1, respectively; the display panel further includes a second demultiplexer 42 corresponding to each second polarity data line group D20, each second demultiplexer 42 including an input terminal and n output terminals, the n output terminals of the second demultiplexer 42 being connected to the corresponding n second polarity data lines D2, respectively; the display panel further includes a first source signal line K1 corresponding to each first demultiplexer 41, the first source signal line K1 being connected to an input terminal of the corresponding first demultiplexer 41; the display panel further includes a second source signal line K2 corresponding to each of the second demultiplexers 42, the second source signal line K2 being connected to an input terminal of the corresponding second demultiplexer 42; each first source signal line K1 is connected to the first polarity signal line P1 through the first switch unit 31, and the first switch unit 31 is configured to control on and off between each first source signal line K1 and the first polarity signal line P1, that is, to control on and off between the plurality of first polarity data lines D1 and the first polarity signal line P1; each of the second source signal lines K2 is connected to the second polarity signal line P2 through a second switch unit 32, and the second switch unit 32 is configured to control on and off between each of the second source signal lines K2 and the second polarity signal line P2, that is, to control on and off between the plurality of second polarity data lines D2 and the second polarity signal line P2.
Further, with the above control method, in the display stage of each frame, each first demultiplexer 41 sequentially controls the n first polarity data lines D1 to be conducted with the corresponding first source signal line K1, respectively, and each second demultiplexer 42 sequentially controls the n second polarity data lines D2 to be conducted with the corresponding second source signal line K2, respectively; in the pressure sensing stage of each frame, each first demultiplexer 41 controls the n first polarity data lines D1 to be connected to the corresponding first source signal line K1, that is, in the pressure sensing stage, all the first polarity data lines D1 are connected to the first polarity signal line P1, and each second demultiplexer 42 controls the n second polarity data lines D2 to be connected to the corresponding second source signal line K2, that is, in the pressure sensing stage, all the second polarity data lines D2 are connected to the second polarity signal line P2.
Specifically, in the structure shown in fig. 4, the pressure-sensitive sensor 1 is not directly connected to the data line D through the gating circuit 2 and the first and second switch units 31 and 32, but the first and second switch units 31 and 32 are connected to the data line D through the demultiplexer, and each of the first and second source signal lines K1 and K2 is respectively connected to one interface of the driving chip, so that, in the display stage, each demultiplexer sequentially controls the corresponding n data lines to be respectively connected to the corresponding source signal lines, so that the driving chip can charge the pixel electrodes corresponding to the multiple columns of sub-pixels through the same interface, thereby reducing the number of interfaces of the driving chip. In the pressure sensing stage, the multi-way distributor controls the corresponding n data lines to be connected to the corresponding source signal lines, so that more data lines can provide working current for the pressure sensing sensor together, residual charges on the data lines can be utilized more fully, and power consumption is further reduced.
Alternatively, as shown in fig. 4, 5 and 6, the first switch unit 31 includes a first source switch M1 corresponding to each first source signal line K1, each first source signal line K1 is connected to the first polarity signal line P1 through the corresponding first source switch M1, a first end of the first source switch M1 is connected to the first source signal line K1, and a second end of the first source switch M1 is connected to the first polarity signal line P1; the second switch unit 32 includes a second source switch M2 corresponding to each second source signal line K2, each second source signal line K2 is connected to a second polarity signal line P2 through a corresponding second source switch M2, a first end of the second source switch M2 is connected to the second source signal line K2, and a second end of the second source switch M2 is connected to the second polarity signal line P2. The control terminals of each first source switch M1 and each second source switch M2 may be connected to the control signal terminal L2, and the control signal terminal L2 controls the on and off of each first source switch M1 and each second source switch M2 at the same time.
Further, as shown in fig. 4, for the above control method, in the display phase of each frame, each first source switch M1 and each second source switch M2 are controlled to be turned off to prevent the data signal on the data line D from being transmitted to the pressure sensing sensor 1, so that the pressure sensing sensor 1 does not work in the display phase; in the pressure sensing stage of each frame, each first source switch M1 and each second source switch M2 are controlled to be turned on, so that the charges remaining on the data line D can be transferred to the pressure sensing sensor 1, and the pressure sensing sensor 1 is driven in an auxiliary manner.
Alternatively, on the basis of fig. 4, as shown in fig. 7, fig. 7 is a schematic structural diagram of another display panel in an embodiment of the present invention, the structure shown in fig. 7 is substantially the same as the structure shown in fig. 4, except that the output terminal of the pressure-sensitive sensor 1 is connected to the corresponding output signal line OL, the pressure-sensitive sensor 1 includes a first output terminal out1 and a second output terminal out2, the display panel further includes a fifth switching tube T5 corresponding to each output signal line OL, a first end of each fifth switching tube T5 is connected to the corresponding output signal line OL, and a control terminal of each fifth switching tube T5 is connected to the output signal control line L3; the first source signal line K1 and/or the second source signal line K2 include an output multiplexed signal line K0 corresponding to each output signal line OL and an input multiplexed signal line K00 other than the output multiplexed signal line K0, and a second end of each fifth switching tube T5 is connected to the corresponding output multiplexed signal line K0; the first source switch tube and/or the second source switch tube comprise a multiplexing switch tube M0 corresponding to each output multiplexing signal line K0 and a non-multiplexing switch tube M00 not corresponding to any output multiplexing signal line K0, the control end of each multiplexing switch tube M0 is connected to a multiplexing control signal line L4, and the control end of each non-multiplexing switch tube M00 is connected to a non-multiplexing control signal line L5.
Further, the control method corresponding to the display panel shown in fig. 7 is different from the control method corresponding to the display panel shown in fig. 4, in that in the display stage of each frame, a cut-off signal is provided to the multiplexing control signal line L4 and the non-multiplexing control signal line L5 to control each multiplexing switch tube M0 and each non-multiplexing switch tube M00 to be cut off, and a cut-off signal is provided to the output signal control line L3 to control each fifth switch tube T5 to be cut off, and at this time, the pressure sensing sensor 1 does not work; in the pressure sensing stage of each frame, a turn-off signal is provided to the multiplexing control signal line L4 to control each multiplexing switch M0 to turn off, so as to prevent conduction between the output multiplexing signal line K0 and the first polarity signal line P1 or the second polarity signal line P2, a turn-on signal is provided to the non-multiplexing control signal line L5 to control each non-multiplexing switch M00 to turn on, a turn-on signal is provided to the output signal control line L3 to control each fifth switch T5 to turn on, at this time, the output terminal of the pressure sensing sensor 1 is conducted to the first source signal line K1 and/or the second source signal line K2, and the first source signal line K1 and the second source signal line K2 are connected to the driving chip, so that the driving chip can directly obtain the output signal of the pressure sensing sensor 1 through a portion of the first source signal line K1 and the second source signal line K2, thereby implementing the pressure detecting function, therefore, an output signal line and a corresponding driving chip interface of the pressure sensing sensor 1 are not required to be separately arranged; and the other part of the first source signal line K1 and the second source signal line K2 are still used for providing the bias voltage signal for the pressure-sensitive sensor 1 so as to drive the pressure-sensitive sensor 1 to work normally. It should be noted that, in fig. 7, specific connection structures of the gate circuit, the sub-pixels and the data lines are omitted, and specific connection manners and operation principles of these structures are the same as those in the above embodiments, and are not described again here.
Optionally, as shown in fig. 8, fig. 8 is a schematic structural diagram of another display panel in the embodiment of the present invention, where the display panel includes a display area 5, and a plurality of data lines penetrate through the display area 5 from a first side (above the display area in fig. 8) of the display area 5 and extend to a second side (below the display area in fig. 8) of the display area 5; on the first side of the display region 5, the plurality of first polarity data lines D1 are connected to the first polarity signal line P1 through the first switching unit 31, and the plurality of second polarity data lines D2 are connected to the second polarity signal line P2 through the second switching unit 32; the plurality of first polarity data lines D1 includes a plurality of first polarity data line groups each including n first polarity data lines D1; the plurality of second polarity data lines D2 includes a plurality of second polarity data line groups, each of which includes n second polarity data lines D2; on the second side of the display area 5, the display panel further includes a first demultiplexer 41 corresponding to each first polarity data line group, each first demultiplexer 41 includes an input terminal and n output terminals, and the n output terminals of the first demultiplexer 41 are respectively connected to the corresponding n first polarity data lines D1; on the second side of the display area 5, the display panel further includes a second demultiplexer 42 corresponding to each second polarity data line group, each second demultiplexer 42 includes an input terminal and n output terminals, the n output terminals of the second demultiplexer 42 are respectively connected to the corresponding n second polarity data lines D2; on the second side of the display area 5, the display panel further includes a first source signal line K1 corresponding to each first demultiplexer 41, the first source signal line K1 being connected to the input terminal of the corresponding first demultiplexer 41; on the second side of the display region, the display panel further includes a second source signal line K2 corresponding to each second demultiplexer 42, the second source signal line K2 being connected to an input terminal of the corresponding second demultiplexer 42. The first source signal line K1 and the second source signal line K2 are connected to the driving chip.
Further, as shown in fig. 8, for the control method of the display panel shown in fig. 8, in the display stage of each frame, each first demultiplexer 41 sequentially controls n first polarity data lines D1 to be conducted with the corresponding first source signal line K1, and each second demultiplexer 42 sequentially controls n second polarity data lines D2 to be conducted with the corresponding second source signal line K2, at this time, the driving chip provides the data signals to the first polarity data line D1 and the second polarity data line D2 through the first source signal line K1 and the second source signal line K2; in the pressure sensing stage of each frame, each first demultiplexer 41 controls the n first polarity data lines D1 to be connected to the corresponding first source signal line K1, and each second demultiplexer 42 controls the n second polarity data lines D2 to be connected to the corresponding second source signal line K2, at this time, the driving chip provides signals for driving the pressure sensing sensor 1 to operate to all the first polarity data lines D1 and all the second polarity data lines D2 through the first source signal line K1 and the second source signal line K2, wherein the signals provided to the first polarity data lines D1 and the signals provided to the second polarity data lines D2 are opposite in polarity. The control method of the first switch unit 31 and the second switch unit 32 and the process of transmitting the bias voltage to the pressure-sensitive sensor 1 through the first polarity data line D1 and the second polarity data line D2 to drive the pressure-sensitive sensor 1 are the same as the above-mentioned embodiments, and are not repeated herein.
Specifically, with the display panel structure shown in fig. 8, since the first switch unit 31 and the second switch unit 32 are disposed on the upper side of the display region, the first source signal line K1 and the second source signal line K2 are disposed on the lower side of the display region, and the first source signal line K1 and the second source signal line K2 are connected to the driving chip, in the pressure sensing stage, in the process of providing the bias voltage for the pressure sensing sensor 1 through the data line by the driving chip, the charges remaining on the data line in the display stage can be more fully utilized, and the effect of saving power consumption is better.
Alternatively, as shown in fig. 8, the first switch unit 31 includes a first source switch M1 corresponding to each first polarity data line D1, each first polarity data line D1 is connected to the first polarity signal line P1 through the corresponding first source switch M1, a first end of the first source switch M1 is connected to the first polarity data line D1, and a second end of the first source switch M1 is connected to the first polarity signal line P1; the second switch unit 32 includes a second source switch M2 corresponding to each second polarity data line D2, each second polarity data line D2 is connected to a second polarity signal line P2 through the corresponding second source switch M2, a first end of the second source switch M2 is connected to the second polarity data line D2, and a second end of the second source switch M2 is connected to the second polarity signal line P2.
Further, for the control method of the display panel shown in fig. 8, in the display stage of each frame, each first source switch M1 and each second source switch M2 are controlled to be turned off, so as to ensure that the pressure sensor 1 does not adversely affect the charging process of the pixel electrode in the sub-pixel in the display stage; in the pressure sensing stage of each frame, each first source switch M1 and each second source switch M2 are controlled to be turned on, so as to ensure that in the pressure sensing stage, a bias voltage can be provided to the pressure sensing sensor 1 through the data line, so as to drive the pressure sensing sensor 1 to work normally.
Alternatively, as shown in fig. 1 to 4 and 8, in the first source switch M1 and the second source switch M2, the control terminal of each source switch is connected to the control signal terminal L2; the display panel further includes a test control terminal (not shown) and a driving chip (not shown), which are connected to the control signal terminal L2.
Further, as for the control method of the display panel shown in fig. 1 to 4 and 8, in the manufacturing process of the display panel, in order to avoid the waste of the driving chip caused by the defect of the display panel, a test is required before the bonding of the driving chip, in the test stage, an external signal is connected to the test control terminal, the test control terminal provides a conducting signal to the control signal terminal L2 to control each first source switch M1 and each second source switch M2 to be conducted, at this time, the external signal is input to the first polarity signal line P1 and the second polarity signal line P2, and then the external signal is input to each data line, the test of displaying is performed by observing whether each sub-pixel in the display panel can be normally lighted, if the test is passed, the driving chip can be bonded on the display panel, after the driving chip is bonded on the display panel, the display panel can be normally driven to carry out display and pressure detection; in the display stage of each frame, the driving chip provides a cut-off signal to the control signal terminal L2 to control each of the first source switch M1 and each of the second source switch M2 to be cut off, and the specific process of the display stage is the same as that of the above embodiment and is not described herein again; in the pressure sensing stage of each frame, the driving chip provides a conducting signal to the control signal terminal L2 to control each of the first source switch M1 and each of the second source switch M2 to be conducting.
Specifically, in the process of testing the display panel between the bonded driving chips, a test signal needs to be provided for each data line to determine whether the display panel has poor display by observing whether each sub-pixel can be normally lit, and the first polarity signal line P1 and the second polarity signal line P2 in the embodiment of the present invention can provide a test signal for each data line at the same time, so that the circuit structure in the embodiment of the present invention can be multiplexed to perform a test.
Alternatively, as shown in fig. 1, the display panel includes a display region including a plurality of sub-pixels defined by a plurality of data lines D and a plurality of scan lines (not shown in the figure) crossing and insulated, each data line D being connected to a corresponding column of sub-pixels; in the row direction, the first polarity data lines D1 and the second polarity data lines D2 are alternately arranged. Thus, the pixel electrodes with different polarities can be more uniformly distributed on the display panel to improve the display effect.
It should be noted that, as shown in fig. 9, fig. 9 is a schematic structural diagram of a pressure-sensitive sensor in an embodiment of the present invention, where the pressure-sensitive sensor is a wheatstone bridge-type pressure sensor, the wheatstone bridge-type pressure sensor includes a first input end in1, a second input end in2, a first output end out1, and a second output end out2, a second voltage-variable resistor R2 is connected in series between the first input end in1 and the first output end out1, a third voltage-variable resistor R3 is connected in series between the first output end out1 and the second input end in2, a fourth voltage-variable resistor R4 is connected in series between the second input end in2 and the second output end out2, and a first voltage-variable resistor R1 is connected in series between the second output end 2 and the first input end in 1.
Specifically, the shapes of the first voltage-variable resistor R1, the second voltage-variable resistor R2, the third voltage-variable resistor R3 and the fourth voltage-variable resistor R4 may be various, and illustratively, as shown in fig. 9, the pressure-sensitive sensor includes a first extending direction x and a second extending direction y, the first extending direction x and the second extending direction y being arranged to intersect, a component of an extending length of the first voltage-variable resistor R1 from a first end a to a second end a 'in the first extending direction x is larger than a component in the second extending direction y, a component of an extending length of the second voltage-variable resistor R2 from a first end b to a second end b' in the second extending direction y is larger than a component in the first extending direction x, a component of an extending length of the third voltage-variable resistor R3 from a first end c to a second end c 'in the first extending direction x is larger than a component in the second extending direction y, and a component of the fourth voltage-variable resistor R4 from a first end d to a second end c' in the second extending direction y is larger than a component in the second extending direction y A component in the first extension direction x. The arrangement can not only enable the first voltage variable resistor R1 and the third voltage variable resistor R3 to sense the strain in the first extending direction x, but also enable the second voltage variable resistor R2 and the fourth voltage variable resistor R4 to sense the strain in the second extending direction y, and also enable the area of the whole pressure sensing sensor to be small and the influence of temperature to be small. When the display panel is not subjected to compressive stress perpendicular to the plane of the display panel, when the ratio of the resistance values of the first voltage-variable resistor R1 and the second voltage-variable resistor R2 is equal to the ratio of the resistance values of the fourth voltage-variable resistor R4 and the third voltage-variable resistor R3, the bridge reaches an equilibrium state, and the voltage value at the first output end out1 is equal to the voltage value at the second output end out 2; when the display panel is subjected to a compressive stress perpendicular to the plane of the display panel, the four resistors deform to cause the resistance values of the resistors to change, so that the bridge breaks the balance state, that is, the ratio of the resistance values of the first voltage-variable resistor R1 to the resistance value of the second voltage-variable resistor R2 is not equal to the ratio of the resistance values of the fourth voltage-variable resistor R4 to the resistance value of the third voltage-variable resistor R3, the voltage value at the first output end out1 is not equal to the voltage value at the second output end out2, the difference between the voltage value at the first output end out1 and the voltage value at the second output end out2 has a corresponding relationship with the pressure value applied to the display panel, and in the pressure detection process, the corresponding pressure value can be obtained by obtaining the voltage value at the first output end out1 and the voltage value at the second output end out 2.
Alternatively, as shown in fig. 10, fig. 10 is a schematic structural diagram of another pressure-sensitive sensor in the embodiment of the present invention, and the pressure-sensitive sensor 1 is a silicon piezoresistive pressure sensor.
Specifically, the silicon piezoresistive pressure sensor may have a quadrilateral structure, four sides of which are respectively connected with the first input terminal in1, the second input terminal in2, the first output terminal out1 and the second output terminal out2, the first input terminal in1 and the second input terminal in2 are respectively connected to two opposite sides, and the first output terminal out1 and the second output terminal out2 are respectively connected to the other two opposite sides. The first input terminal in1 and the second input terminal in2 apply bias voltage to the silicon piezoresistive pressure sensor, when the display panel is subjected to compressive stress perpendicular to the plane of the display panel, the resistance value of the silicon piezoresistive pressure sensor changes, the output signals of the first output terminal out1 and the second output terminal out2 change correspondingly, and the pressure applied to the silicon piezoresistive pressure sensor is detected through the voltage changes of the first output terminal out1 and the second output terminal out 2.
As shown in fig. 11, fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the embodiment of the present invention further provides a display device including the display panel 100.
The specific structure and principle of the display panel 100 are the same as those of the above embodiments, and are not described herein again. The display device may be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, an electronic paper book, or a television.
In the display device in the embodiment of the invention, after the data line completes the function of charging the pixel electrode in the display stage, the data line is multiplexed into the signal line for providing the bias voltage for the pressure sensing sensor, so that the driving of the pressure sensing sensor can be assisted by the residual charge on the data line, thereby reducing the switching loss during the internal voltage conversion of the driving chip, namely saving the power consumption.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (18)

1. A display panel, comprising:
a first input end of the pressure sensing sensor is connected to a first bias voltage signal line, and a second input end of the pressure sensing sensor is connected to a second bias voltage signal line;
the gating circuit comprises a first gating end, a second gating end, a third gating end and a fourth gating end, wherein the first gating end is connected to the first bias voltage signal line, the second gating end is connected to the second bias voltage signal line, the third gating end is connected to the first polarity signal line, the fourth gating end is connected to the second polarity signal line, the gating circuit is used for switching between a first state and a second state, the first gating end and the third gating end are conducted in the first state, the second gating end and the fourth gating end are conducted, the first gating end and the fourth gating end are conducted in the second state, and the second gating end and the third gating end are conducted;
a plurality of data lines including a plurality of first polarity data lines and a plurality of second polarity data lines;
a first switch unit, through which the plurality of first polarity data lines are coupled to the first polarity signal line, for controlling on and off between the plurality of first polarity data lines and the first polarity signal line;
a second switch unit, through which the plurality of second polarity data lines are coupled to the second polarity signal line, for controlling on and off between the plurality of second polarity data lines and the second polarity signal line.
2. The display panel according to claim 1,
the gating circuit includes:
a first switch tube, a first end of which is connected to the first gating end, a second end of which is connected to the fourth gating end, and a control end of which is connected to a gating control signal line;
a second switch tube, a first end of which is connected to the first gating end, a second end of which is connected to the third gating end, and a control end of which is connected to the gating control signal line;
a third switch tube, a first end of which is connected to the second strobe end, a second end of which is connected to the fourth strobe end, and a control end of which is connected to the strobe control signal line;
a fourth switching tube, a first end of which is connected to the second gating end, a second end of which is connected to the third gating end, and a control end of which is connected to the gating control signal line;
the first switching tube and the fourth switching tube are P-type transistors, and the second switching tube and the third switching tube are N-type transistors;
or, the first switching tube and the fourth switching tube are N-type transistors, and the second switching tube and the third switching tube are P-type transistors.
3. The display panel according to claim 1,
the plurality of first polarity data lines are composed of a plurality of first polarity data line groups, and each first polarity data line group comprises n first polarity data lines;
the plurality of second polarity data lines are composed of a plurality of second polarity data line groups, and each second polarity data line group comprises n second polarity data lines;
the display panel further comprises a first demultiplexer corresponding to each first polarity data line group, each first demultiplexer comprises an input end and n output ends, and the n output ends of the first demultiplexer are respectively connected to the n corresponding first polarity data lines;
the display panel further comprises a second demultiplexer corresponding to each second polarity data line group, each second demultiplexer comprises an input end and n output ends, and the n output ends of the second demultiplexers are respectively connected to the n corresponding second polarity data lines;
the display panel further comprises a first source signal line corresponding to each first demultiplexer, and the first source signal lines are connected to the input ends of the corresponding first demultiplexers;
the display panel further comprises a second source signal line corresponding to each second demultiplexer, and the second source signal lines are connected to the input ends of the corresponding second demultiplexers;
each first source signal line is connected to the first polarity signal line through the first switch unit, and the first switch unit is used for controlling the connection and disconnection between each first source signal line and the first polarity signal line;
each second source signal line is connected to the second polarity signal line through the second switch unit, and the second switch unit is used for controlling the on and off of each second source signal line and the second polarity signal line.
4. The display panel according to claim 3,
the first switch unit comprises first source electrode switch tubes corresponding to each first source electrode signal line, each first source electrode signal line is connected to the first polarity signal line through the corresponding first source electrode switch tube, the first end of each first source electrode switch tube is connected to the first source electrode signal line, and the second end of each first source electrode switch tube is connected to the first polarity signal line;
the second switch unit includes a second source switch tube corresponding to each second source signal line, each second source signal line is connected to the second polarity signal line through the corresponding second source switch tube, a first end of the second source switch tube is connected to the second source signal line, and a second end of the second source switch tube is connected to the second polarity signal line.
5. The display panel according to claim 4,
the output end of the pressure sensing sensor is connected with the corresponding output signal line, the display panel further comprises a fifth switching tube corresponding to each output signal line, the first end of each fifth switching tube is connected with the corresponding output signal line, and the control end of each fifth switching tube is connected with the output signal control line;
the first source signal line and/or the second source signal line comprise output multiplexing signal lines corresponding to the output signal lines, and the second end of each fifth switching tube is connected to the corresponding output multiplexing signal line;
the first source electrode switch tube and/or the second source electrode switch tube comprise multiplexing switch tubes corresponding to each output multiplexing signal line and non-multiplexing switch tubes not corresponding to any output multiplexing signal line, the control end of each multiplexing switch tube is connected to a multiplexing control signal line, and the control end of each non-multiplexing switch tube is connected to a non-multiplexing control signal line.
6. The display panel according to claim 1,
the display panel comprises a display area, and the data lines penetrate through the display area from a first side of the display area and extend to a second side of the display area;
on a first side of the display area, the plurality of first polarity data lines are connected to the first polarity signal lines through the first switch unit, and the plurality of second polarity data lines are connected to the second polarity signal lines through the second switch unit;
the plurality of first polarity data lines are composed of a plurality of first polarity data line groups, and each first polarity data line group comprises n first polarity data lines;
the plurality of second polarity data lines are composed of a plurality of second polarity data line groups, and each second polarity data line group comprises n second polarity data lines;
on the second side of the display area, the display panel further includes a first demultiplexer corresponding to each first polarity data line group, each first demultiplexer includes an input end and n output ends, and the n output ends of the first demultiplexers are respectively connected to the n corresponding first polarity data lines;
on a second side of the display area, the display panel further includes a second demultiplexer corresponding to each of the second polarity data line groups, each of the second demultiplexers includes an input terminal and n output terminals, and the n output terminals of the second demultiplexer are respectively connected to the corresponding n second polarity data lines;
on the second side of the display area, the display panel further comprises a first source signal line corresponding to each first demultiplexer, and the first source signal line is connected to the input end of the corresponding first demultiplexer;
and the display panel also comprises a second source signal line corresponding to each second demultiplexer on the second side of the display area, and the second source signal lines are connected to the input ends of the corresponding second demultiplexers.
7. The display panel according to claim 6,
the first switch unit comprises a first source electrode switch tube corresponding to each first polarity data line, each first polarity data line is connected to the first polarity signal line through the corresponding first source electrode switch tube, the first end of the first source electrode switch tube is connected to the first polarity data line, and the second end of the first source electrode switch tube is connected to the first polarity signal line;
the second switch unit includes a second source switch corresponding to each second polarity data line, each second polarity data line is connected to the second polarity signal line through the corresponding second source switch, a first end of the second source switch is connected to the second polarity data line, and a second end of the second source switch is connected to the second polarity signal line.
8. The display panel according to claim 4 or 7,
in the first source electrode switch tube and the second source electrode switch tube, the control end of each source electrode switch tube is connected to a control signal end;
the display panel further comprises a test control terminal and a driving chip, wherein the test control terminal and the driving chip are connected to the control signal end.
9. The display panel according to claim 1,
the display panel comprises a display area, the display area comprises a plurality of sub-pixels defined by intersecting insulation of a plurality of data lines and a plurality of scanning lines, and each data line is connected with a corresponding column of sub-pixels;
in the row direction, the first polarity data lines and the second polarity data lines are alternately arranged.
10. A control method of a display panel is characterized in that,
the display panel includes:
a first input end of the pressure sensing sensor is connected to a first bias voltage signal line, and a second input end of the pressure sensing sensor is connected to a second bias voltage signal line;
the gating circuit comprises a first gating end, a second gating end, a third gating end and a fourth gating end, wherein the first gating end is connected to the first bias voltage signal line, the second gating end is connected to the second bias voltage signal line, the third gating end is connected to the first polarity signal line, the fourth gating end is connected to the second polarity signal line, the gating circuit is used for switching between a first state and a second state, the first gating end and the third gating end are conducted in the first state, the second gating end and the fourth gating end are conducted, the first gating end and the fourth gating end are conducted in the second state, and the second gating end and the third gating end are conducted;
a plurality of data lines including a plurality of first polarity data lines and a plurality of second polarity data lines;
a first switch unit, through which the plurality of first polarity data lines are coupled to the first polarity signal line, for controlling on and off between the plurality of first polarity data lines and the first polarity signal line;
a second switching unit, through which the plurality of second polarity data lines are coupled to the second polarity signal line, for controlling on and off between the plurality of second polarity data lines and the second polarity signal line;
the control method of the display panel comprises the following steps:
in the display stage of the nth frame, the first switch unit controls the plurality of first polarity data lines and the first polarity signal lines to be cut off, and the second switch unit controls the plurality of second polarity data lines and the second polarity signal lines to be cut off;
in the pressure sensing stage of the nth frame, the first switch unit controls conduction between the plurality of first polarity data lines and the first polarity signal lines, the second switch unit controls conduction between the plurality of second polarity data lines and the second polarity signal lines, and the gating circuit works in the first state;
in the display stage of the (n + 1) th frame, the first switch unit controls the plurality of first polarity data lines and the first polarity signal lines to be cut off, and the second switch unit controls the plurality of second polarity data lines and the second polarity signal lines to be cut off;
in the pressure sensing stage of the (n + 1) th frame, the first switch unit controls conduction between the plurality of first polarity data lines and the first polarity signal lines, the second switch unit controls conduction between the plurality of second polarity data lines and the second polarity signal lines, and the gating circuit works in the second state;
providing a first polarity signal to the first polarity data line and a second polarity signal to the second polarity data line in the nth frame, the first polarity signal and the second polarity signal having opposite polarities;
and in the (n + 1) th frame, providing the second polarity signal to the first polarity data line and providing the first polarity signal to the second polarity data line.
11. The control method of a display panel according to claim 10,
the gating circuit includes:
a first switch tube, a first end of which is connected to the first gating end, a second end of which is connected to the fourth gating end, and a control end of which is connected to a gating control signal line;
a second switch tube, a first end of which is connected to the first gating end, a second end of which is connected to the third gating end, and a control end of which is connected to the gating control signal line;
a third switch tube, a first end of which is connected to the second strobe end, a second end of which is connected to the fourth strobe end, and a control end of which is connected to the strobe control signal line;
a fourth switching tube, a first end of which is connected to the second gating end, a second end of which is connected to the third gating end, and a control end of which is connected to the gating control signal line;
the first switching tube and the fourth switching tube are P-type transistors, and the second switching tube and the third switching tube are N-type transistors;
or the first switching tube and the fourth switching tube are N-type transistors, and the second switching tube and the third switching tube are P-type transistors;
when the gating circuit works in the first state, a first control signal is provided for the gating control signal line, the first switching tube and the fourth switching tube are turned on in response to the first control signal, and the second switching tube and the third switching tube are turned off in response to the first control signal;
when the gating circuit works in the second state, a second control signal is provided for the gating control signal line, the first switching tube and the fourth switching tube are turned off in response to the second control signal, and the second switching tube and the third switching tube are turned on in response to the second control signal.
12. The control method of a display panel according to claim 10,
the plurality of first polarity data lines are composed of a plurality of first polarity data line groups, and each first polarity data line group comprises n first polarity data lines;
the plurality of second polarity data lines are composed of a plurality of second polarity data line groups, and each second polarity data line group comprises n second polarity data lines;
the display panel further comprises a first demultiplexer corresponding to each first polarity data line group, each first demultiplexer comprises an input end and n output ends, and the n output ends of the first demultiplexer are respectively connected to the n corresponding first polarity data lines;
the display panel further comprises a second demultiplexer corresponding to each second polarity data line group, each second demultiplexer comprises an input end and n output ends, and the n output ends of the second demultiplexers are respectively connected to the n corresponding second polarity data lines;
the display panel further comprises a first source signal line corresponding to each first demultiplexer, and the first source signal lines are connected to the input ends of the corresponding first demultiplexers;
the display panel further comprises a second source signal line corresponding to each second demultiplexer, and the second source signal lines are connected to the input ends of the corresponding second demultiplexers;
each first source signal line is connected to the first polarity signal line through the first switch unit, and the first switch unit is used for controlling the connection and disconnection between each first source signal line and the first polarity signal line;
each second source signal line is connected to the second polarity signal line through the second switch unit, and the second switch unit is used for controlling the on and off of each second source signal line and the second polarity signal line;
at the display stage of each frame, each first demultiplexer sequentially controls the n first polarity data lines to be respectively conducted with the corresponding first source signal lines, and each second demultiplexer sequentially controls the n second polarity data lines to be respectively conducted with the corresponding second source signal lines;
in a pressure sensing stage of each frame, each first demultiplexer controls the n first polarity data lines to be conducted with the corresponding first source signal lines, and each second demultiplexer controls the n second polarity data lines to be conducted with the corresponding second source signal lines.
13. The control method of a display panel according to claim 12,
the first switch unit comprises first source electrode switch tubes corresponding to each first source electrode signal line, each first source electrode signal line is connected to the first polarity signal line through the corresponding first source electrode switch tube, the first end of each first source electrode switch tube is connected to the first source electrode signal line, and the second end of each first source electrode switch tube is connected to the first polarity signal line;
the second switch unit comprises a second source switch tube corresponding to each second source signal line, each second source signal line is connected to the second polarity signal line through the corresponding second source switch tube, a first end of the second source switch tube is connected to the second source signal line, and a second end of the second source switch tube is connected to the second polarity signal line;
in the display stage of each frame, controlling each first source electrode switch tube and each second source electrode switch tube to be cut off;
and in the pressure sensing stage of each frame, controlling each first source electrode switch tube and each second source electrode switch tube to be conducted.
14. The control method of a display panel according to claim 13,
the output end of the pressure sensing sensor is connected with the corresponding output signal line, the display panel further comprises a fifth switching tube corresponding to each output signal line, and the control end of each fifth switching tube is connected with an output signal control line;
the first source signal line and/or the second source signal line include an output multiplexing signal line corresponding to each of the output signal lines;
the first source switch tube and/or the second source switch tube comprise a multiplexing switch tube corresponding to each output multiplexing signal line and a non-multiplexing switch tube not corresponding to any output multiplexing signal line, the control end of each multiplexing switch tube is connected to a multiplexing control signal line, and the control end of each non-multiplexing switch tube is connected to a non-multiplexing control signal line;
in the display stage of each frame, a cut-off signal is provided for the multiplexing control signal line and the non-multiplexing control signal line to control each multiplexing switch tube and each non-multiplexing switch tube to be cut off, and a cut-off signal is provided for the output signal control line to control each fifth switch tube to be cut off;
in the pressure sensing stage of each frame, a cut-off signal is provided for the multiplexing control signal line to control each multiplexing switch tube to be cut off, a conducting signal is provided for the non-multiplexing control signal line to control each non-multiplexing switch tube to be conducted, and a conducting signal is provided for the output signal control line to control each fifth switch tube to be conducted.
15. The control method of a display panel according to claim 10,
the display panel comprises a display area, and the data lines penetrate through the display area from a first side of the display area and extend to a second side of the display area;
on a first side of the display area, the plurality of first polarity data lines are connected to the first polarity signal lines through the first switch unit, and the plurality of second polarity data lines are connected to the second polarity signal lines through the second switch unit;
the plurality of first polarity data lines are composed of a plurality of first polarity data line groups, and each first polarity data line group comprises n first polarity data lines;
the plurality of second polarity data lines are composed of a plurality of second polarity data line groups, and each second polarity data line group comprises n second polarity data lines;
on the second side of the display area, the display panel further includes a first demultiplexer corresponding to each first polarity data line group, each first demultiplexer includes an input end and n output ends, and the n output ends of the first demultiplexers are respectively connected to the n corresponding first polarity data lines;
on a second side of the display area, the display panel further includes a second demultiplexer corresponding to each of the second polarity data line groups, each of the second demultiplexers includes an input terminal and n output terminals, and the n output terminals of the second demultiplexer are respectively connected to the corresponding n second polarity data lines;
on the second side of the display area, the display panel further comprises a first source signal line corresponding to each first demultiplexer, and the first source signal line is connected to the input end of the corresponding first demultiplexer;
on a second side of the display area, the display panel further includes a second source signal line corresponding to each of the second demultiplexers, the second source signal line being connected to an input terminal of the corresponding second demultiplexer;
at the display stage of each frame, each first demultiplexer sequentially controls the n first polarity data lines to be respectively conducted with the corresponding first source signal lines, and each second demultiplexer sequentially controls the n second polarity data lines to be respectively conducted with the corresponding second source signal lines;
in a pressure sensing stage of each frame, each first demultiplexer controls the n first polarity data lines to be conducted with the corresponding first source signal lines, and each second demultiplexer controls the n second polarity data lines to be conducted with the corresponding second source signal lines.
16. The control method of a display panel according to claim 15,
the first switch unit comprises a first source electrode switch tube corresponding to each first polarity data line, each first polarity data line is connected to the first polarity signal line through the corresponding first source electrode switch tube, the first end of the first source electrode switch tube is connected to the first polarity data line, and the second end of the first source electrode switch tube is connected to the first polarity signal line;
the second switch unit comprises a second source switch tube corresponding to each second polarity data line, each second polarity data line is connected to the second polarity signal line through the corresponding second source switch tube, a first end of the second source switch tube is connected to the second polarity data line, and a second end of the second source switch tube is connected to the second polarity signal line;
in the display stage of each frame, controlling each first source electrode switch tube and each second source electrode switch tube to be cut off;
and in the pressure sensing stage of each frame, controlling each first source electrode switch tube and each second source electrode switch tube to be conducted.
17. The control method of a display panel according to claim 13 or 16,
in the first source electrode switch tube and the second source electrode switch tube, the control end of each source electrode switch tube is connected to a control signal end;
the display panel also comprises a test control terminal and a driving chip, wherein the test control terminal and the driving chip are connected to the control signal end;
in a test stage, the test control terminal provides a conduction signal to the control signal end to control each first source electrode switch tube and each second source electrode switch tube to be conducted;
in the display stage of each frame, the driving chip provides a cut-off signal to the control signal end to control each first source electrode switch tube and each second source electrode switch tube to be cut off;
in the pressure sensing stage of each frame, the driving chip provides a conducting signal to the control signal end to control each first source electrode switch tube and each second source electrode switch tube to be conducted.
18. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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