CN218273363U

CN218273363U - Touch display panel, display module and display device

Info

Publication number: CN218273363U
Application number: CN202222300584.7U
Authority: CN
Inventors: 费日锂; 康报虹
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-01-10
Anticipated expiration: 2032-08-30

Abstract

The embodiment of the utility model discloses touch-control display panel, including a plurality of pixel electrodes that are the array and arrange, touch controller and be the electrode unit that the array was arranged, a plurality of electrode units correspond the setting with a plurality of pixel electrodes, and arbitrary adjacent first electrode unit sets up and forms induction capacitance with the second electrode unit is insulating, and electrode unit connects and still connects in touch controller in showing reference power supply circuit simultaneously. The electrode unit and the pixel electrode are matched to form a display capacitor to drive the display medium to display images. The first electrode unit receives a touch driving signal from the touch controller, the second electrode unit outputs a touch sensing signal to the touch controller, and the touch controller identifies touch operation according to the touch sensing signal. The first electrode unit and the second electrode unit are touched and identified by fingerprints through the induction capacitor, so that touch control is realized while the liquid crystal display panel displays the touch signals. The utility model also discloses a display module assembly and display device including aforementioned touch-control display panel.

Description

Touch display panel, display module and display device

Technical Field

The utility model relates to a touch-control shows technical field, especially relates to touch-control display panel, display module assembly and display device.

Background

With the development of liquid crystal display technology, touch screens are increasingly being used in the liquid crystal display field as the simplest, convenient and natural way of human-computer interaction. Touch screens can be classified into four types, i.e., resistive, capacitive, infrared, and surface acoustic wave, according to the operating principle and the medium for detecting touch information. The capacitive touch screen technology is the mainstream touch screen technology at present due to the characteristics of simple process, long product service life, high light transmittance and the like.

At present, for fingerprint identification of a display screen, an Organic Light-Emitting Diode (OLED) display screen is mostly adopted, the OLED screen does not need to be backlit, light can enter a fingerprint identification module below the display screen through the screen, and a liquid crystal display panel has the defect that fingerprint identification of Light below the screen is difficult to realize due to the existence of backlight.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art not enough, the utility model provides a liquid crystal display's touch-control display panel, display module assembly and display device.

A touch display panel comprises a plurality of pixel electrodes which are arranged in an array mode, and the pixel electrodes are used for receiving data signals for image display from a display driving circuit. The touch display panel further comprises a touch controller, a plurality of first electrode units and a plurality of second electrode units, the first electrode units and the second electrode units are arranged in an array mode, the first electrode units and the second electrode units are respectively arranged corresponding to the pixel electrodes in a one-to-one correspondence mode, any adjacent first electrode units and any adjacent second electrode units are arranged in an insulation mode and form induction capacitors, the first electrode units and the second electrode units are connected to the display reference power circuit, and meanwhile the first electrode units and the second electrode units are further connected to the touch controller. When the touch display panel executes image display, the first electrode unit and the second electrode unit receive a first reference voltage from the display reference power circuit and cooperate with the pixel electrode receiving the data signal to form a display capacitor to drive the display medium to execute image display. When the touch display panel executes touch sensing, the first electrode unit receives a touch driving signal from the touch controller, the second electrode unit outputs a touch sensing signal to the touch controller, and the touch controller identifies touch operation according to the touch sensing signal.

Optionally, the plurality of first electrode units and the plurality of second electrode units arranged along the first direction are arranged in a plurality of rows, the plurality of first electrode units and the plurality of second electrode units in each row are alternately arranged, the first electrode units arranged along the first direction in each row are electrically connected with each other, the plurality of first electrode units and the plurality of second electrode units arranged along the second direction are arranged in a plurality of columns, the plurality of first electrode units and the plurality of second electrode units in each column are alternately arranged, the second electrode units arranged along the second direction in each column are electrically connected with each other, wherein the first direction is perpendicular to the second direction.

Optionally, the plurality of first electrode units and the plurality of second electrode units arranged along the first direction are arranged in a plurality of rows, each row of the plurality of first electrode units and the plurality of second electrode units are alternately arranged, and the first electrode units arranged along the first direction in each row are electrically connected with each other. The plurality of first electrode units and the plurality of second electrode units are arranged in a plurality of rows along the second direction, the plurality of first electrode units are sequentially arranged in one row, the plurality of second electrode units are sequentially arranged in one row, each row of second electrode units are electrically connected with each other, and the first direction is perpendicular to the second direction.

Optionally, the plurality of first electrode units in each row are integrally formed, and the plurality of second electrode units are respectively arranged in an insulated manner with the adjacent first electrode units.

Optionally, the touch display panel further includes a plurality of output electrodes and a plurality of receiving electrodes, and the touch controller correspondingly connects the plurality of output electrodes and the plurality of receiving electrodes through the plurality of touch signal lines, wherein one output electrode is connected to at least one row of the first electrode units, and one receiving electrode is connected to at least one column of the second electrode units. The touch controller outputs a touch driving signal to the first electrode unit through the output electrode, and receives a touch sensing signal output by the second electrode unit from the receiving electrode.

Optionally, the plurality of first electrode units and the plurality of second electrode units in the touch display panel correspond to form a touch identification area, and the touch identification area is used for identifying touch operation in the touch identification area according to changes of the inductive capacitance between the first electrode units and the second electrode units. In the touch recognition area, in a plurality of rows of electrode units arranged along a first direction, a first electrode unit in at least two rows of electrode units is connected to the same output electrode, and in a plurality of columns of electrode units arranged along a second direction, a second electrode unit in at least two columns of electrode units is connected to the same receiving electrode.

Optionally, the touch recognition area further comprises a fingerprint recognition area, and fingerprint information in the fingerprint recognition area is recognized according to changes of the inductive capacitance between the first electrode unit and the second electrode unit. In the fingerprint identification area, a first electrode unit in one row of electrode units is connected to one output electrode in a plurality of rows of electrode units along a first direction, and a second electrode unit in one column of electrode units is connected to one receiving electrode in a plurality of columns of electrode units along a second direction.

Optionally, in the electrode units arranged in two adjacent rows, the first electrode unit in the first row of electrode units is connected to the first output electrode, the first electrode unit in the second row of electrode units is connected to the second output electrode, and the first output electrode and the second output electrode are respectively disposed on different sides of the first electrode units in the two rows.

The utility model discloses still disclose a display module assembly, including data drive circuit, scanning drive circuit, display control circuit and aforementioned touch-control display panel, display control circuit is used for exporting grid output control signal to scanning drive circuit, exports source output control signal to data drive circuit to control scanning drive circuit output scanning signal to the pixel cell among the touch-control display panel, control data drive circuit output data signal to pixel cell, pixel cell carries out image display according to scanning signal and data signal.

The utility model discloses still disclose a display device, including braced frame, power module and aforementioned display module assembly, power module assembly carries out image display for display panel and provides mains voltage, and display module assembly and power module assembly are fixed in braced frame.

Compared with the prior art, in the liquid crystal touch display panel, touch or fingerprint sensing is carried out on the first electrode unit and the second electrode unit through the induction capacitor, touch control is realized while the liquid crystal display panel displays, the setting of touch signal lines in the touch identification area is reduced, the setting of the touch signal lines in the fingerprint identification area is increased, the resolution of the fingerprint identification area is effectively improved, the setting of the touch signal lines is reduced, the cost of the touch display panel is reduced, the space of the touch display panel is saved, and the design of a narrow frame is facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present application;

FIG. 2 is a schematic side view of the display module shown in FIG. 1 according to a second embodiment of the present disclosure;

FIG. 3 is a schematic view of a planar layout structure of the display module shown in FIG. 2;

fig. 4 is a schematic plan view illustrating a touch display panel according to a third embodiment of the present disclosure;

FIG. 5 is an equivalent circuit diagram of the connection of the pixel unit and the electrode;

FIG. 6 is a schematic layout view of the touch recognition area in FIG. 4;

FIG. 7 is a schematic layout view of the fingerprint identification area of FIG. 4;

fig. 8 is a layout diagram of a touch display panel according to a fourth embodiment of the present application.

Description of reference numerals: the display device comprises a display device-100, a display module-10, a power supply module-20, a supporting frame 30, a data driving circuit-11, a scanning driving circuit-12, a touch display panel-13, a display area-13 a, a non-display area-13 b, a display control circuit-14, a pixel unit-15, a touch controller-16, a backlight module-17, an array substrate-131, a liquid crystal layer-132, a color film substrate-133, a first direction-F1, a second direction-F2, data lines-S1-Sm, scanning lines-G1-Gn, a clock signal-CLK, a common voltage-Vcom, a first electrode unit-Vm 1, a second electrode unit-Vm 2, an output electrode-TX, a receiving electrode-RX, a touch identification area-134, a fingerprint identification area-135, a first output electrode-TX 1, a second output electrode-TX 2, a first receiving electrode-RX 1 and a second receiving electrode-RX 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connect" or "connect" as used herein includes both direct and indirect connections (connections), unless otherwise specified. Directional phrases used in this disclosure, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the attached drawing figures and, thus, are used in a better and clearer sense to describe and understand the present invention rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and in the drawings are used for distinguishing different objects and not for describing a particular order.

Furthermore, the terms "comprises," "comprising," "includes," "including," or "including" as used herein, specify the presence of stated features, operations, elements, and/or the like, but do not limit the presence of one or more other features, operations, elements, or the like. Furthermore, the terms "comprises" or "comprising" indicate the presence of the respective features, numbers, steps, operations, elements, components or combinations thereof disclosed in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components or combinations thereof, and are intended to cover non-exclusive inclusions. Furthermore, when describing embodiments of the present invention, "may" mean "one or more embodiments of the present invention. Also, the term "exemplary" is intended to refer to examples or illustrations.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device 100 according to a first embodiment of the present disclosure. The display device 100 includes a display module 10, a power module 20 and a supporting frame 30, the display module 10 and the power module 20 are fixed to the supporting frame 30, and the power module 20 is disposed on the back of the display module 10, which is the non-display surface of the display module 10. The power module 20 is used for providing a power voltage for the display module 10 to display images, and the supporting frame 30 provides fixing and protecting functions for the display module 10 and the power module 20.

Referring to fig. 2, fig. 2 is a schematic side view of a display module 10 shown in fig. 1 according to a second embodiment of the present disclosure.

The display Module 10 includes a touch display panel 13 and a backlight Module 17 (BM), wherein the backlight Module 17 is configured to provide light for display to a display area 13a of the touch display panel 13, and the touch display panel 13 emits corresponding light according to an image signal to be displayed to perform image display.

The touch display panel 13 includes an Array Substrate (AS) 131, a Color filter substrate (CF) 133, and a liquid crystal layer 132 sandwiched between the Array substrate 131 and the Color filter substrate 133. The driving elements disposed on the array substrate 131 and the color filter substrate 133 generate corresponding electric fields according to the Data signals Data, so as to drive the liquid crystal molecules in the liquid crystal layer 132 to rotate at an angle to emit light rays with corresponding brightness, thereby performing image display.

Referring to fig. 2-3, fig. 3 is a schematic plan layout structure of the display module 10 shown in fig. 2.

As shown in fig. 3, the display module 10 further includes a data driving circuit 11, a scan driving circuit 12, a display control circuit 14, and a touch controller 16. The data driving circuit 11, the scan driving circuit 12, and the display control circuit 14 are disposed in the non-display area 13b of the touch display panel 13.

In the display region 13a of the touch display panel 13, a plurality of data lines (Source lines) S1 to Sm and a plurality of scanning lines (Gate lines) G1 to Gn are provided in a grid pattern. The plurality of scan lines G1 to Gn extend along a first direction F1, and the plurality of data lines S1 to Sm extend along a second direction F2. The first direction F1 and the second direction F2 are perpendicular to each other.

The pixel cells 15 are provided at the alternate portions of the plurality of scanning lines G1 to Gn and the plurality of data lines S1 to Sm. In this embodiment, the pixel cells 15 are represented by P11-P1 m, P21-P2 m, \ 8230 \ 8230;, pn 1-Pnm, respectively.

The scanning lines G1 to Gn are connected to the scanning driving circuit 12 and receive scanning signals from the scanning driving circuit 12, and the Data lines S1 to Sm are connected to the Data driving circuit 11 and receive Data signals Data stored and transmitted in a gray scale format supplied from the Data driving circuit 11.

The pixel unit 15 receives the Data voltage corresponding to the gray level value in the Data signal Data provided by the Data lines S1 to Sm for a predetermined period of time under the control of the scan lines G1 to Gn, and accordingly drives the liquid crystal layer 132 to deflect a corresponding angle, so that the received backlight emits light with corresponding brightness according to the deflected corresponding angle, and image display is performed according to the light with corresponding brightness emitted by the image signal.

The display control circuit 14 receives an image signal representing image information, a clock signal CLK for synchronization, a horizontal synchronization signal Hsyn, and a vertical synchronization signal Vsyn from an external signal source, and outputs a gate output control signal Cg for controlling the scanning drive circuit 12, a source output control signal Cs for controlling the Data drive circuit 11, and a Data signal Data representing image information. In this embodiment, the display control circuit 14 performs Data adjustment processing on the original Data signal to obtain a Data signal Data, and transmits the Data signal Data to the Data driving circuit 11.

The scanning drive circuit 12 receives the gate output control signal Cg outputted from the display control circuit 14, and outputs scanning signals to the scanning lines G1 to Gn. The Data drive circuit 11 receives the source output control signal Cs output from the display control circuit 14, and outputs Data signals Data for driving elements to perform image display in each pixel unit 15 in the display region 13a to the respective Data lines S1 to Sm. The Data signal Data provided to the touch display panel 13 is a gray scale voltage in an analog form. The scan driving circuit 12 outputs a scan signal to control the pixel unit 15 to receive the Data signal Data output by the Data driving circuit 11 to control the pixel unit 15 to display a corresponding image.

The touch controller 16 is electrically connected to a common electrode (not shown) in the touch display panel 13, and is configured to output a touch driving signal to the electrode, receive a touch sensing signal from the electrode, and obtain touch information of the touch display panel 13 according to the touch sensing signal.

Referring to fig. 4, fig. 4 is a schematic plan view illustrating a touch display panel according to a third embodiment of the present application. As shown in fig. 4, the touch display panel 13 includes a touch controller 16, and a plurality of first electrode units Vm1 and a plurality of second electrode units Vm2 arranged in an array, where the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 are respectively arranged corresponding to the plurality of pixel units 15 in a one-to-one correspondence manner.

Any adjacent first electrode unit Vm1 and second electrode unit Vm2 are insulated and form an induction capacitor, the first electrode unit Vm1 and the second electrode unit Vm2 are connected to a display reference power circuit, and the first electrode unit Vm1 and the second electrode unit Vm2 are respectively electrically connected to the touch controller 16.

When the touch display panel 13 performs image display, the first electrode unit Vm1 and the second electrode unit Vm2 receive a first reference voltage, i.e., a common voltage Vcom, from a display reference power circuit (not identified), and cooperate with the pixel electrode 151 receiving a data signal in the pixel unit 15 to form a display capacitor to drive the display medium to perform image display. When the touch display panel 13 performs touch sensing, the first electrode unit Vm1 receives a touch driving signal from the touch controller 16, the second electrode unit Vm2 outputs a touch sensing signal to the touch controller 16, and the touch controller 16 recognizes a touch operation according to the touch sensing signal.

Wherein, the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 arranged along the first direction F1 are arranged in a plurality of rows, the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 are alternately arranged in each row, the first electrode units Vm1 arranged along the first direction F1 in each row are electrically connected with each other,

the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 arranged along the second direction F2 are arranged in a plurality of columns, the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 in each column are alternately arranged, the second electrode units Vm2 arranged along the second direction F2 in each column are electrically connected with each other, wherein the first direction F1 is perpendicular to the second direction F2. Meanwhile, the plurality of first electrode units Vm1 in each row are integrally formed, and the plurality of second electrode units Vm2 are respectively arranged to be insulated from the adjacent first electrode units Vm 1.

The touch display panel 13 further includes a plurality of output electrodes TX and a plurality of receiving electrodes RX, the touch controller 16 is correspondingly connected to the plurality of output electrodes TX and the plurality of receiving electrodes RX through a plurality of touch signal lines, wherein one output electrode TX is connected to at least one row of the first electrode units Vm1, one receiving electrode RX is connected to at least one column of the second electrode units Vm2, and the touch controller 16 outputs a touch driving signal to the first electrode units Vm1 through the output electrodes TX and receives a touch sensing signal output by the second electrode units Vm2 from the receiving electrode RX.

Specifically, the plurality of first electrode units Vm1 arranged in the same row are connected to the same output electrode TX, the plurality of second electrode units Vm2 arranged in the same column are connected to the same receiving electrode RX, and the touch controller 16 is connected to the plurality of output electrodes TX and the plurality of receiving electrodes RX through the plurality of touch signal lines, respectively. The touch controller 16 outputs a touch driving signal to the first electrode unit Vm1 through the output electrode TX, and transmits the touch driving signal to the second electrode unit Vm2 through the sensing capacitance between the first electrode unit Vm1 and the second electrode unit Vm2, and the touch controller receives a touch sensing signal from the receiving electrode RX connected to the second electrode unit Vm 2.

The touch display panel 13 includes a plurality of first electrode units and a plurality of second electrode units corresponding to each other to form a touch identification area 134 and a fingerprint identification area 135, where the touch identification area 134 includes the fingerprint identification area 135, that is, the area of the fingerprint identification area 135 is smaller than the area of the touch identification area 134, and the touch identification area 134 is configured to identify touch information in the touch identification area according to a capacitance change between the first electrode unit Vm1 and the second electrode unit Vm2, and transmit the touch information to the touch controller 16. The fingerprint identification region 135 is configured to identify fingerprint information in the region according to a capacitance change between the first electrode unit Vm1 and the second electrode unit Vm2, and transmit the identified fingerprint information to the touch controller 16 via the receiving electrode RX.

Through set up induction capacitance between first electrode unit and second electrode unit, through induction capacitance's change discernment touch information and fingerprint information, need not to set up extra fingerprint sensor.

Referring to fig. 5, fig. 5 is an equivalent circuit diagram of the pixel unit connected to the electrode.

As shown in fig. 5, the pixel unit 15 includes a Thin Film Transistor (TFT) T1 and a pixel electrode 151, a gate of the TFT T1 is connected to the scan line G for receiving a scan signal from the scan line G, a source of the TFT T1 is connected to the data line S, and a drain of the TFT T1 is connected to the pixel electrode 151. When the scanning line G receives a scanning signal, the source and the drain of the thin film transistor T1 are turned on, the source of the thin film transistor T1 receives a Data signal Data and transmits the Data signal Data to the pixel electrode 151, the Data signal Data is a gray scale voltage in an analog form, and an electric field is formed with the first electrode unit Vm1 or the second electrode unit Vm2 disposed correspondingly to drive the liquid crystal to deflect, so as to emit light corresponding to a gray scale. The first electrode units Vm1 disposed in the same row and the output electrodes TX are integrally formed, and the second electrodes Vm2 disposed in the same column are connected to the receiving electrodes RX through the touch signal lines TP.

Referring to fig. 6, fig. 6 is a schematic layout diagram of the touch recognition area in fig. 4.

As shown in fig. 6, the touch recognition area 134 includes a plurality of output electrodes TX and a plurality of receiving electrodes RX, and among a plurality of rows of electrode units arranged in the first direction F1, a first electrode unit Vm1 of at least two rows of electrode units is connected to the same output electrode TX, and among a plurality of columns of electrode units arranged in the second direction F2, a second electrode unit Vm2 of at least two columns of electrode units is connected to the same receiving electrode RX.

In the electrode units arranged in two adjacent rows, the first electrode unit Vm1 in the first row of electrode units is connected to the first output electrode TX1, the first electrode unit Vm1 in the second row of electrode units is connected to the second output electrode TX2, and the first output electrode TX1 and the second output electrode TX2 are respectively disposed on different sides of the two rows of first electrode units.

For example, the first row first electrode unit Vm1 is connected to the first output electrode TX1, the second row first electrode unit Vm1 is connected to the second output electrode TX2, the third row first electrode unit Vm1 is connected to the first output electrode TX1, and the fourth row first electrode unit Vm1 is connected to the second output electrode TX2.

In the plurality of second electrode units Vm2 arranged in an array, a plurality of rows of second electrode units Vm2 are connected to the same receiving electrode RX, and the receiving electrode RX is configured to receive the touch sensing signal transmitted by the plurality of rows of second electrode units Vm 2.

The first electrode units Vm1 and the second electrode units Vm2 perform signal transmission through induction capacitance, namely mutual capacitance, compared with a self-capacitance form, the number of touch signal lines of the touch controller 16 and the output electrodes TX and the receiving electrodes RX is reduced, meanwhile, at least two rows of the first electrode units Vm1 are connected to the same output electrode TX, at least two columns of the second electrode units Vm2 are connected to the same receiving electrode RX, the number of touch signal lines of the touch controller 16 and the output electrodes TX and the receiving electrodes RX is further reduced, the cost is reduced, and meanwhile, the space is saved. Since the touch recognition area 134, that is, the non-fingerprint recognition area, only needs to recognize a touch behavior and does not need to recognize accurate fingerprint information, the space occupation of the touch signal lines is reduced by reducing the number of the touch signal lines, and the touch behavior information can be effectively recognized.

Referring to fig. 7, fig. 7 is a layout diagram of the fingerprint identification area in fig. 4.

As shown in fig. 7, the fingerprint identification area 135 is configured to identify fingerprint information in the fingerprint identification area according to a variation of the induced capacitance between the first electrode unit Vm1 and the second electrode unit Vm 2. In the fingerprint identification area, among a plurality of rows of electrode units in the first direction F1, a first electrode unit Vm1 in one row of electrode units is connected to one output electrode TX, and among a plurality of columns of electrode units in the second direction F2, a second electrode unit Vm2 in one column of electrode units is connected to one receiving electrode RX.

Specifically, the fingerprint identification area 135 includes a plurality of output electrodes TX and a plurality of receiving electrodes RX, among the plurality of first electrode units Vm1 arranged in an array, the same row of first electrode units Vm1 arranged along the first direction F1 is connected to the same output electrode TX, and the plurality of rows of first electrode units Vm1 are respectively and correspondingly connected to the plurality of output electrodes TX. The output electrodes TX connected to two adjacent rows of the first electrode units Vm1 are respectively located at two sides of the fingerprint identification area 135.

In the plurality of second electrode units Vm2 arranged in an array, the same column of second electrode units Vm2 arranged along the second direction F2 are connected to the same receiving electrode RX, and the plurality of columns of second electrode units Vm2 are respectively connected to the plurality of receiving electrodes RX.

For example, the first row first electrode unit Vm1 is connected to the first output electrode TX1, the second row first electrode unit Vm1 is connected to the second output electrode TX2, the third row first electrode unit Vm1 is connected to the third output electrode TX3, and the fourth row first electrode unit Vm1 is connected to the fourth output electrode TX4. The first row second electrode unit Vm2 is connected to the first receiving electrode RX1, the second row second electrode unit Vm2 is connected to the second receiving electrode RX2, and the third row second electrode unit Vm2 is connected to the third receiving electrode RX3.

A group of electrode units, namely a first electrode unit Vm1 and a second electrode unit Vm2, are connected to the touch controller 16 through a touch signal line, so that fingerprint ridges and fingerprint valleys can be effectively sensed through the sensing capacitance between the first electrode unit Vm1 and the second electrode unit Vm2, and further fingerprint information can be accurately identified.

In one embodiment, the same row of first electrode units Vm1 in the fingerprint identification area 135 arranged along the first direction F1 is connected to the same output electrode TX, and the multiple rows of first electrode units Vm1 are respectively connected to the multiple output electrodes TX correspondingly. The second electrode units Vm2 in the same column arranged along the second direction F2 are connected to the same receiving electrode RX, and the second electrode units Vm2 in two adjacent columns or the second electrode units Vm2 in three adjacent columns are connected to the same receiving electrode RX.

Referring to fig. 8, fig. 8 is a schematic layout view of a touch display panel according to a fourth embodiment of the present application. As shown in fig. 8, the touch display panel 13 includes a touch controller 16, and a plurality of first electrode units Vm1 and a plurality of second electrode units Vm2 arranged in an array, where the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 are respectively arranged corresponding to the plurality of pixel units 15 in a one-to-one correspondence manner.

When the touch display panel 13 performs image display, the first electrode unit Vm1 and the second electrode unit Vm2 receive a first reference voltage, i.e., a common voltage Vcom, from a display reference power circuit (not identified), and cooperate with the pixel electrode 151 receiving a data signal in the pixel unit 15 to form a display capacitor to drive the display medium to perform image display. When the touch display panel 13 performs touch sensing, the first electrode unit Vm1 receives a touch driving signal from the touch controller 16, the second electrode unit Vm2 outputs a touch sensing signal to the touch controller 16, and the touch controller 16 recognizes touch operation according to the touch sensing signal.

The plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 arranged along the first direction F1 are arranged in a plurality of rows, the plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 are alternately arranged in each row, and the first electrode units Vm1 arranged along the first direction F1 in each row are electrically connected to each other.

The plurality of first electrode units Vm1 and the plurality of second electrode units Vm2 arranged along the second direction F2 are arranged in a plurality of rows, the plurality of first electrode units Vm1 are sequentially arranged in a row, the plurality of second electrode units Vm2 are sequentially arranged in a row, each row of the second electrode units Vm2 is electrically connected with each other, and the first direction F1 is perpendicular to the second direction F2.

By arranging the plurality of second electrode units Vm2 along the second direction F2, only one touch signal line is needed by two adjacent columns of electrode units to connect the second electrode unit Vm2 with the receiving electrode RX, so that the use of the touch signal line is saved, and the cost is reduced.

Carry out touch or fingerprint sensing with first electrode unit and second electrode unit through induction capacitance to reduce the setting of the touch-control signal line in touch identification district, increase the setting of touch-control signal line in fingerprint identification district, when effectively guaranteeing fingerprint identification, reduced the quantity of touch-control signal line, and then reduced touch-control display panel's cost, saved touch-control display panel's space, be favorable to the design of narrow frame.

It should be understood that the application of the present invention is not limited to the above examples, and that modifications or changes can be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A touch display panel comprises a plurality of pixel electrodes arranged in an array, wherein the pixel electrodes are used for receiving data signals for image display from a display driving circuit;

the touch display panel is characterized by further comprising a touch controller, a plurality of first electrode units and a plurality of second electrode units, wherein the first electrode units and the second electrode units are arranged in an array mode, the first electrode units and the second electrode units are respectively arranged corresponding to the pixel electrodes in a one-to-one correspondence mode, any adjacent first electrode unit and any adjacent second electrode unit are arranged in an insulated mode and form an induction capacitor, the first electrode units and the second electrode units are connected to a display reference power supply circuit, and meanwhile, the first electrode units and the second electrode units are further connected to the touch controller;

when the touch display panel executes image display, the first electrode unit and the second electrode unit receive a first reference voltage from the display reference power circuit, and cooperate with the pixel electrode receiving the data signal to form a display capacitor to drive a display medium to execute image display;

when the touch display panel executes touch sensing, the first electrode unit receives a touch driving signal from the touch controller, the second electrode unit outputs a touch sensing signal to the touch controller, and the touch controller identifies touch operation according to the touch sensing signal.

2. The touch display panel according to claim 1, wherein the first electrode units and the second electrode units arranged along a first direction are arranged in a plurality of rows, the first electrode units and the second electrode units are alternately arranged in each row, and the first electrode units arranged along the first direction in each row are electrically connected to each other;

the plurality of first electrode units and the plurality of second electrode units arranged along a second direction are arranged in a plurality of columns, each column of the plurality of first electrode units and the plurality of second electrode units are alternately arranged, each column of the plurality of second electrode units arranged along the second direction are electrically connected with each other, and the first direction is perpendicular to the second direction.

3. The touch display panel according to claim 1, wherein the first electrode units and the second electrode units are arranged in a plurality of rows along a first direction, the first electrode units and the second electrode units are alternately arranged in each row, and the first electrode units arranged in each row along the first direction are electrically connected to each other;

the first electrode units and the second electrode units are arranged in multiple rows along a second direction, the first electrode units are sequentially arranged in one row, the second electrode units are sequentially arranged in one row, each row of the second electrode units is electrically connected with each other, and the first direction and the second direction are perpendicular to each other.

4. The touch display panel according to claim 2 or 3, wherein the first electrode units in each row are integrally formed, and the second electrode units are respectively insulated from the adjacent first electrode units.

5. The touch display panel according to claim 2 or 3,

the touch display panel further comprises a plurality of output electrodes and a plurality of receiving electrodes, the touch controller is correspondingly connected with the plurality of output electrodes and the plurality of receiving electrodes through a plurality of touch signal lines, one output electrode is connected with at least one row of the first electrode units, and one receiving electrode is connected with at least one column of the second electrode units;

the touch controller outputs the touch driving signal to the first electrode unit through the output electrode, and receives the touch sensing signal output by the second electrode unit from the receiving electrode.

6. The touch display panel of claim 5,

a plurality of first electrode units and a plurality of second electrode units in the touch display panel correspondingly form a touch identification area, and the touch identification area is used for identifying touch operation in the touch identification area according to the change of the induction capacitance between the first electrode units and the second electrode units;

in the touch recognition area, in a plurality of rows of electrode units arranged along the first direction, the first electrode units in at least two rows of electrode units are connected to the same output electrode;

in the multiple rows of electrode units arranged along the second direction, the second electrode units in at least two rows of electrode units are connected to the same receiving electrode.

7. The touch display panel of claim 6,

the touch identification area also comprises a fingerprint identification area, and fingerprint information in the fingerprint identification area is identified according to the change of the inductive capacitance between the first electrode unit and the second electrode unit;

in the fingerprint identification area, the first electrode unit in one row of electrode units is connected to one of the output electrodes in a plurality of rows of electrode units along the first direction;

in the plurality of columns of electrode units along the second direction, the second electrode unit in one column of electrode units is connected to one of the receiving electrodes.

8. The touch display panel of claim 7, wherein in the electrode units arranged in two adjacent rows, the first electrode unit in a first row of electrode units is connected to a first output electrode, the first electrode unit in a second row of electrode units is connected to a second output electrode, and the first output electrode and the second output electrode are respectively disposed on different sides of the first electrode units in the two rows.

9. A display module, comprising a data driving circuit, a scan driving circuit, a display control circuit and the touch display panel of any one of claims 1 to 8, wherein the display control circuit is configured to output a gate output control signal to the scan driving circuit and a source output control signal to the data driving circuit, so as to control the scan driving circuit to output a scan signal to a pixel unit in the touch display panel and control the data driving circuit to output a data signal to the pixel unit, and the pixel unit performs image display according to the scan signal and the data signal.

10. A display device, comprising a supporting frame, a power module and the display module of claim 9, wherein the power module provides a power voltage for the display panel to display images, and the display module and the power module are fixed to the supporting frame.