CN107491206B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN107491206B CN107491206B CN201710646772.6A CN201710646772A CN107491206B CN 107491206 B CN107491206 B CN 107491206B CN 201710646772 A CN201710646772 A CN 201710646772A CN 107491206 B CN107491206 B CN 107491206B
- Authority
- CN
- China
- Prior art keywords
- touch
- electrode
- sensing resistor
- display panel
- sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
The application discloses display panel and display device is provided with the display area and around the non-display area of display area, and display panel includes: the control chip is positioned in the non-display area; the touch control electrodes are arranged in the display area and are arranged in an array mode, each touch control electrode comprises at least one sensing resistor, each sensing resistor comprises a first routing wire extending along a first direction and a second routing wire extending along a second direction, the first routing wires and the second routing wires are alternately and electrically connected, and the first direction and the second direction are crossed; in the touch stage, the control chip sends a touch signal to the touch electrode; in the pressure sensing stage, the touch electrode is reused as a pressure sensing electrode, and the control chip inputs a bias voltage signal to the pressure sensing electrode. So, this application is the touch electrode multiplexing and is the forced induction electrode, need not additionally to increase components and parts such as forced induction electrode layer or pressure-sensitive coil in display panel, can additionally not increase display panel's manufacturing cost.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The touch display panel generally includes a display panel and a touch panel. When the touch display panel is prepared, the most basic scheme is to prepare the display panel and the touch panel respectively, and then attach the display panel and the touch panel to form the touch display panel. In addition, there are two schemes, On-cell and In-cell: the On-cell scheme is that a touch circuit is formed On the surface of the display panel, so that a bonding process is not needed, and compared with a mode of respectively preparing the display panel and the touch panel and then bonding, the thickness of the touch display panel can be reduced; the In-cell scheme is to form a touch circuit In a display panel (for example, between an array substrate and a color film substrate), and the thickness of the touch display panel formed by the In-cell scheme is smaller than that of the On-cell scheme.
The touch display panel manufactured according to the above-mentioned schemes can generally only recognize the coordinates in the X direction and the Y direction, that is, only the position of the screen pressed by the user can be determined, but the force with which the user presses the screen cannot be determined. Although the force of pressing the screen by the user can be determined by introducing components such as the pressure-sensitive electrode layer or the pressure-sensitive coil into the display panel, the components such as the pressure-sensitive electrode layer or the pressure-sensitive coil need to be additionally added, the cost is high, the lamination is complex, and the components cannot be well applied to the light and bendable display panel and the display device.
Disclosure of Invention
In view of the above, the present disclosure provides a display panel and a display device, in which a touch electrode is reused as a pressure sensing electrode, and there is no need to additionally add components such as a pressure sensing electrode layer or a pressure sensitive coil in the display panel, so that the manufacturing cost of the display panel is not additionally increased, the complexity of the display panel and the display device in lamination is not increased, and the display panel and the display device can be better applied to a portable and bendable display panel and display device.
In order to solve the technical problem, the following technical scheme is adopted:
in a first aspect, the present application provides a display panel, wherein a display area and a non-display area surrounding the display area are provided, the display panel includes:
the control chip is positioned in the non-display area;
the touch electrodes are arranged in the display area and are arranged in an array, each touch electrode comprises at least one sensing resistor, each sensing resistor comprises a first routing wire extending along a first direction and a second routing wire extending along a second direction, the first routing wires and the second routing wires are alternately and electrically connected, and the first direction is crossed with the second direction;
in a touch stage, the control chip sends a touch signal to the touch electrode; in the pressure sensing stage, the touch electrode is reused as a pressure sensing electrode, and the control chip inputs a bias voltage signal to the pressure sensing electrode.
Optionally, wherein:
the resistance value of the induction resistor is more than or equal to 1k omega and less than or equal to 100k omega.
Optionally, wherein:
each touch electrode comprises a first induction resistor, a second induction resistor, a third induction resistor and a fourth induction resistor which have the same resistance value, and a first signal end, a second signal end, a third signal end and a fourth signal end;
the first end of the first sensing resistor and the first end of the fourth sensing resistor are electrically connected with the first signal end, the second end of the first sensing resistor and the first end of the second sensing resistor are electrically connected with the third signal end, the second end of the fourth sensing resistor and the first end of the third sensing resistor are electrically connected with the fourth signal end, and the second end of the second sensing resistor and the second end of the third sensing resistor are electrically connected with the second signal end;
in the touch stage, the control chip sends a touch signal to the touch electrode through the first signal end, the second signal end, the third signal end and the fourth signal end; in the pressure sensing stage, the control chip sends a bias voltage signal to the pressure sensing electrode through the first signal end and the second signal end, and receives a pressure sensing detection signal through the third signal end and the fourth signal end.
Optionally, wherein:
the length of a first wire in the first sensing resistor and the third sensing resistor is greater than that of a second wire, and the length of the first wire in the second sensing resistor and the fourth sensing resistor is less than that of the second wire.
Optionally, wherein:
the display panel further comprises a plurality of connecting leads, and the first induction resistor, the second induction resistor, the third induction resistor and the fourth induction resistor are electrically connected with at least one connecting lead through connecting through holes respectively;
the connecting through holes are respectively positioned on the first walking line and/or the second walking line in the first induction resistor, the second induction resistor, the third induction resistor and the fourth induction resistor.
Optionally, wherein:
the display panel also comprises a plurality of gate lines extending along the row direction and arranged along the column direction and a plurality of data signal lines arranged along the row direction and extending along the column direction, wherein the gate lines and the data signal lines are insulated and positioned on different film layers;
the connecting lead and the grid line or the data signal line are arranged in the same layer.
Optionally, wherein:
two adjacent gate lines and two adjacent data lines intersect to define a sub-pixel unit, the length of the smaller one of the first routing line and the second routing line is greater than the length of at least one sub-pixel unit, and the length of the sub-pixel unit is the distance of the sub-pixel unit in the column direction or the row direction.
Optionally, wherein:
the first direction and the second direction are perpendicular,
the first direction is the column direction, and the second direction is the row direction; alternatively, the first and second electrodes may be,
the angle between the first direction and the row direction is 45 °.
Optionally, wherein:
the display panel further comprises a gating control circuit and at least one public lead, the gating control circuit is located in the non-display area, a first end of the gating control circuit is electrically connected with the control chip, a second end of the gating control circuit is electrically connected with the public lead, and a third end of the gating control circuit is electrically connected with the connecting lead respectively;
in a touch stage, the gating control circuit is closed, and the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor in the touch electrode are electrically connected with the common lead through the connecting lead respectively; in the pressure sensing stage, the gating control circuit is disconnected, and the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are respectively disconnected with the common lead.
Optionally, wherein:
the gate control circuit comprises a plurality of thin film transistors, the grid electrodes of the thin film transistors are connected with the control chip, the first poles of the thin film transistors are connected to the common lead, and the second poles of the thin film transistors are respectively and correspondingly electrically connected with the connecting leads one by one;
in a touch control stage, the thin film transistor is closed, the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are electrically connected with the common lead through the connecting via hole and the connecting lead, and the control chip sends a touch control signal to the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor; in the pressure sensing stage, the thin film transistor is disconnected, the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are disconnected with the common lead, and the control chip sends bias voltage signals to the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor.
Optionally, wherein:
the touch control electrode is a self-contained electrode, and in the touch stage, the control chip sends a touch control signal to the self-contained electrode through the first signal end, the second signal end, the third signal end and the fourth signal end and receives a touch control detection signal through the first signal end, the second signal end, the third signal end and the fourth signal end.
Optionally, wherein:
the touch control sensing electrode and the touch control electrode form mutual capacitance, and in the touch stage, the control chip inputs a touch control signal to the touch control electrode through the first signal end, the second signal end, the third signal end and the fourth signal end and receives a touch control detection signal fed back by the touch control sensing electrode; in the pressure sensing stage, the touch electrode is reused as the pressure sensing electrode.
Optionally, wherein:
the touch electrode is made of metal and is located in a non-opening area of the display area.
Optionally, wherein:
the touch electrode is made of indium tin oxide and is positioned in an opening area or a non-opening area of the display area.
In a second aspect, the present application further provides a display device, which includes a display panel, where the display panel is the display panel in the present application.
Compared with the prior art, this application display panel and display device, reached following effect:
in the display panel and the display device provided by the invention, each touch electrode comprises at least one sensing resistor, each sensing resistor comprises a first routing extending along a first direction and a second routing extending along a second direction, and the first routing and the second routing are alternately and electrically connected; and in the touch stage, the touch electrode plays a touch function and receives a touch signal sent by the control chip. Therefore, time-sharing multiplexing of the touch electrode is realized. This application is multiplexing as the forced induction electrode with touch-control electrode, need not additionally to increase components and parts such as forced induction electrode layer or pressure-sensitive coil in display panel, can additionally not increase display panel's manufacturing cost, can not increase the complexity that display panel and display device are stromatolite yet, and application that can be better is in light, bendable display panel and display device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a cross-sectional view of a display area of a display panel provided by the present application;
fig. 2 is a top view of a display panel provided in the present application;
fig. 3 is a schematic view illustrating a structure of a touch electrode provided in the present application;
fig. 4 is a schematic view illustrating another structure of a touch electrode provided in the present application;
FIG. 5 is an equivalent circuit diagram of the touch electrode shown in FIG. 4;
fig. 6 is a schematic view illustrating another structure of an electrical touch electrode provided in the present application;
FIG. 7 is a top view of another embodiment of a display panel of the present application;
fig. 8 is a diagram illustrating a relative position relationship between a touch electrode and a sub-pixel unit according to the present disclosure;
fig. 9 is a schematic view illustrating another structure of a touch electrode according to an embodiment of the present disclosure;
FIG. 10 is a schematic diagram illustrating the connection among the gate control circuit, the common lead, and the connection lead provided in the present application;
FIG. 11 is a schematic diagram illustrating another connection relationship between the gate control circuit, the common lead, and the connection lead provided in the present application;
fig. 12 is a schematic view illustrating another structure of a touch electrode provided in the present application;
fig. 13 is a schematic structural diagram of a display device provided in the present application.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
The flexible display panel becomes one of the most popular display panels at present due to the characteristics of flexibility, low power consumption, portability and the like, the display panel in the application is suitable for the flexible display panel and is also suitable for the liquid crystal display panel, and the basic structure of the display panel is briefly introduced by taking the flexible display panel as an example. Fig. 1 is a cross-sectional view of a display area of a display panel provided by the present application, and generally, the display panel 100 includes a flexible substrate 10, and the flexible substrate 10 is made of any suitable insulating material having flexibility, and may be transparent, translucent or opaque. A buffer layer 30 is disposed on the flexible substrate 10, and typically the buffer layer 30 covers the entire upper surface of the flexible substrate 10. The organic light emitting device is characterized in that a thin film transistor array (a driving functional layer 20) is arranged on the upper surface of the buffer layer 30, an organic light emitting device (a light emitting functional layer 40) is arranged above the thin film transistor array, and a thin film encapsulation layer 50 is arranged on the organic light emitting device, wherein the thin film encapsulation layer 50 generally comprises a plurality of inorganic layers and organic layers, the inorganic layers and the organic layers are stacked in a staggered mode, a touch electrode layer 60 is arranged on the thin film encapsulation layer, and a protection film 70 is arranged on the touch electrode layer 60.
In general, the driving function layer 20 includes:
a semiconductor active layer 25 on the buffer layer 30, the semiconductor active layer 25 including a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions;
a gate insulating layer 26 over the semiconductor active layer 25, the gate insulating layer 26 including an inorganic layer such as silicon oxide, silicon nitride, or metal oxide, and may include a single layer or multiple layers;
a first metal layer 21 on the gate insulating layer 26, a certain region of the first metal layer 21 forming a gate electrode of the thin film transistor, and as the gate metal layer, the gate electrode may include a single layer or a plurality of layers of gold (Au), silver (Ag), copper (Cu), nickel (Ni), platinum (Pt), palladium (Pd), aluminum (Al), molybdenum (Mo), or chromium (Cr), or an alloy such as aluminum (Al): neodymium (Nd) alloy, molybdenum (Mo): tungsten (W) alloy;
an interlayer insulating layer 24 over the first metal layer 21, the interlayer insulating layer 24 being formed of an insulating inorganic layer such as silicon oxide or silicon nitride, or an insulating organic layer;
a second metal layer on the interlayer insulating layer 24, a specific region of the second metal layer forming a source electrode 27 and a drain electrode 28 of the thin film transistor as a source-drain metal layer, the source electrode 27 and the drain electrode 28 being electrically connected to a source region and a drain region, respectively, through a contact hole 29 formed by selectively removing the gate insulating layer 26 and the interlayer insulating layer 24; and
the passivation layer 23 is located on the second metal layer, and the passivation layer 23 may be formed of an inorganic layer such as silicon oxide or silicon nitride, or may be formed of an organic layer.
In general, the organic light emitting device 40 includes a first electrode 43 (typically, an anode), a light emitting layer 42, and a second electrode 41 (typically, a cathode) that are sequentially disposed. Wherein the first electrode 43 is electrically connected to the drain electrode 28 of the thin film transistor through the contact hole, and the thin film transistor controls the organic light emitting device 40 through the drain electrode 28 thereof. The light emitting layer 42 may be formed of a low molecular weight organic material or a high molecular weight organic material, and the light emitting layer 42 includes an organic emission layer, and may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL). Of course, the present invention may also include other film layers in the prior art, which are not described in detail in this specification.
Fig. 2 is a top view of the display panel provided in the present application, and fig. 3 is a schematic view of a structure of the touch electrode provided in the present application, the present application provides a display panel having a display area 11 and a non-display area 12 surrounding the display area 11, the display panel 100 includes:
the control chip 90, the said control chip 90 locates in the said non-display area 12;
the touch electrodes 80 are arranged in the display area 11 and arranged in an array, each touch electrode 80 includes at least one sensing resistor R0, each sensing resistor R0 includes a first trace 81 extending along a first direction and a second trace 82 extending along a second direction, the first trace 81 and the second trace 82 are electrically connected in an alternating manner, and the first direction and the second direction are crossed;
in the touch stage, the control chip 90 sends a touch signal to the touch electrode 80; in the pressure sensing stage, the touch electrode 80 is reused as a pressure sensing electrode, and the control chip 90 inputs a bias voltage signal to the pressure sensing electrode.
Specifically, with reference to fig. 1 to fig. 3, a plurality of touch electrodes 80 arranged in an array are disposed in the display area 11 of the display panel 100, each touch electrode 80 includes at least one sensing resistor R0 shown in fig. 3, the sensing resistor R0 is in a serpentine shape, each touch electrode 80 includes a first trace 81 extending along a first direction and a second trace 82 extending along a second direction, a first end of the first trace 81 'serves as a signal end of the touch electrode 80, a second end of the first trace 81' is connected to a first end of the second trace 82', a second end of the second trace 82' is connected to a first end of the first trace 81 ″, a second end of the first trace 81 ″ is connected to a first end of the second trace 82 ″, such that, of two adjacent first trace 81 and second trace 82, the first end of the second trace 82 is connected to a second end of the first trace 81 arranged in front of the second trace, the second end of the second trace 82 is connected to the first end of the next adjacent first trace 81, so that the first trace 81 and the second trace 82 are alternately and electrically connected to form a serpentine trace. Referring to fig. 4, fig. 4 is a schematic view illustrating another structure of the touch electrode provided in the present application, in this embodiment, the touch electrode includes 4 sense resistors similar to the sense resistor R0 in fig. 3, namely, the sense resistors R1, R2, R3 and R4, and further includes four signal terminals, namely, signal terminals 91, 92, 93 and 94; the sensing resistors R1 and R2 are electrically connected in series between the signal terminals 91 and 92, and the sensing resistors R3 and R4 are also electrically connected in series between the signal terminals 91 and 92. The signal terminal 94 is electrically connected between the sensing resistors R3 and R4, and the signal terminal 93 is electrically connected between the sensing resistors R1 and R2. Four sensing resistors in the same touch electrode are arranged in a 2 x 2 array, in the same touch electrode, for adjacent sensing resistors, all first wires 81 of one sensing resistor are sequentially arranged in parallel along the second direction, each second wire 82 is used for electrically connecting two first wires 81 adjacent along the second direction, all second wires 82 of the other sensing resistor are sequentially arranged in parallel along the first direction, each first wire 81 is used for electrically connecting two second wires 82 adjacent along the first direction, so that in the pressure sensing stage, the directions of the sensing pressure forces of any adjacent sensing resistors are different. When the touch electrode 80 shown in fig. 4 is adopted, the touch electrode 80 can be reused as a pressure sensing electrode, and in a pressure sensing stage, the touch electrode 80 can serve as the pressure sensing electrode, receive a bias voltage signal input by the control chip 90 through the signal terminals 91 and 92, and send a pressure sensing signal to the control chip 90 through the signal terminals 93 and 94, so as to perform a pressure sensing function; in the touch phase, the touch electrode 80 performs a touch function, receives a touch signal transmitted by the control chip 90 through the signal terminals 91, 92, 93 and 94, and transmits a touch sensing signal to the control chip 90 through the signal terminals 91, 92, 93 and 94. Thus, time-sharing multiplexing of the touch electrode 80 is realized. The touch electrode 80 is reused as a pressure sensing electrode, components such as a pressure sensing electrode layer or a pressure sensitive coil do not need to be additionally arranged in the display panel 100, the manufacturing cost of the display panel 100 cannot be additionally increased, the complexity of the lamination of the display panel 100 and a display device cannot be increased, and the touch electrode can be better applied to the portable and bendable display panel 100 and the display device.
Optionally, the resistance value of the sensing resistor R0 in the touch electrode 80 of the present application is 1k Ω ≦ R ≦ 100k Ω.
Specifically, when the resistance value of the sensing resistor R0 of the touch electrode 80 of the present application is set within a range of 1k Ω ≦ R ≦ 100k Ω, since the impedance of the touch electrode 80 is required to be as small as possible in the touch stage, for example, the impedance may be set within a range of 2k Ω or less, so that external touch can be sensitively recognized, if the impedance of the touch electrode is large, the consumption of voltage by the touch electrode 80 will be large, which may cause the load of the entire display panel 100 to be large, and affect the display performance of the display panel. In the pressure sensing stage, the touch electrode 80 is reused as a pressure sensing electrode, and when the display panel is pressed, the shearing force applied to the display panel is determined by the change of the equivalent resistance in the pressure sensing electrode, so that the larger the impedance of the pressure sensing electrode is, the better the impedance is, for example, when the impedance of the pressure sensing electrode is set at 100k Ω or slightly less than 100k Ω, most of the voltage transmitted by the control chip 90 is applied to the pressure sensing electrode, and the smaller the voltage consumed on the signal input lead and the signal output lead is, thereby being beneficial to improving the signal strength of the pressure sensing electrode and improving the pressure sensing performance of the display panel 100.
Optionally, referring to fig. 4, each touch electrode 80 includes a first sensing resistor R1, a second sensing resistor R2, a third sensing resistor R3, and a fourth sensing resistor R4 with equal resistance values, and a first signal terminal 91, a second signal terminal 92, a third signal terminal 93, and a fourth signal terminal 94;
a first end a of the first sensing resistor R1 and a first end a 'of the fourth sensing resistor R4 are electrically connected to the first signal terminal 91, a second end b of the first sensing resistor R1 and a first end b' of the second sensing resistor R2 are electrically connected to the third signal terminal 93, a second end d of the fourth sensing resistor R4 and a first end d 'of the third sensing resistor R3 are electrically connected to the fourth signal terminal 94, and a second end c of the second sensing resistor R2 and a second end c' of the third sensing resistor R3 are electrically connected to the second signal terminal 92;
in the touch stage, the control chip 90 sends a touch signal to the touch electrode 80 through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94, and after the touch electrode 80 senses an external touch signal, the touch electrode 80 sends a touch sensing signal to the control chip 90 through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94; in the pressure sensing stage, the control chip 90 sends a bias voltage signal to the pressure sensing electrode through the first signal terminal 91 and the second signal terminal 92, and receives a pressure sensing detection signal through the third signal terminal 93 and the fourth signal terminal 94.
Specifically, fig. 5 is an equivalent circuit diagram of the touch electrode shown in fig. 4, and in conjunction with fig. 4 and 5, when the touch electrode 80 is multiplexed as a pressure sensing electrode in the pressure sensing stage, the pressure sensing electrode can be equivalent to a wheatstone bridge similar to that shown in fig. 5, the Wheatstone modulator comprises four equivalent resistors, namely Ra, Rb, Rc and Rd, wherein the region between the second signal input terminal Vin2 (corresponding to the third signal terminal 93) and the first signal output terminal Vout1 (corresponding to the first signal terminal 91) is an equivalent resistance Ra, the region between the second signal input terminal Vin2 and the second signal output terminal Vout2 (corresponding to the second signal terminal 92) is an equivalent resistance Rb, the region between the first signal input terminal Vin1 (corresponding to the fourth signal terminal 94) and the first signal output terminal Vout1 is an equivalent resistance Rd, and the region between the first signal input terminal Vin1 and the second signal output terminal Vout2 is an equivalent resistance Rc. When the control chip 90 inputs the bias voltage signal to the pressure sensing electrode through the first signal input terminal Vin1 and the second signal input terminal Vin2, current flows through each branch of the wheatstone bridge. When the display panel is not pressed, the pressure sensing electrode does not feel the external shearing force, the impedances of the equivalent resistances Ra, Rb, Rc and Rd in the pressure sensing electrode are not changed, and the outputs of the first signal output end Vout1 and the second signal output end Vout2 of the pressure sensing electrode are 0. When the display panel 100 is pressed, at least one of the resistances of the internal equivalent resistances Ra, Rb, Rc and Rd of the pressure sensing electrode changes due to the shearing force from the corresponding position on the display panel 100, so that the pressure sensing signals of the first signal output terminal Vout1 and the second signal output terminal Vout2 of the pressure sensing electrode are different from the pressure sensing signals output by the first signal output terminal Vout1 and the second signal output terminal Vout2 of the pressure sensing electrode without pressing, and accordingly, the touch pressure can be determined. When in the touch stage, the electrode shown in fig. 4 functions as the touch electrode 80, and at this time, the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94 all function as input terminals of the touch electrode 80, and the control chip 90 sends a touch signal to the touch electrode 80 through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94. In this way, when the touch electrode 80 is configured in the shape shown in fig. 4, the touch electrode can be reused as a pressure sensing electrode in a pressure sensing stage, and the action of the shearing force from the corresponding position on the display panel 100 can be sensed.
Optionally, the length of the first trace 81 in the first sensing resistor R1 and the third sensing resistor R3 is greater than the length of the second trace 82, and the length of the first trace 81 in the second sensing resistor R2 and the fourth sensing resistor R4 is less than the length of the second trace 82.
Specifically, referring to fig. 4, in the embodiment shown in fig. 4, each of the sensing resistors includes a plurality of first traces 81 extending along a first direction and a plurality of second traces 82 extending along a second direction, and the first traces 81 of the first sensing resistor R1 and the third sensing resistor R3 have a larger length, the second traces 82 have a smaller length, and the first traces 81 of the second sensing resistor R2 and the fourth sensing resistor R4 have a smaller length and the second traces 82 have a larger length. In this way, when the touch electrode 80 is subjected to the action of a shearing force at a position corresponding to the touch electrode, because the length of the first trace 81 extending along the first direction in the first sensing resistor R1 and the third sensing resistor R3 is relatively large, the first sensing resistor R1 and the third sensing resistor R3 can monitor the deformation of the display panel 100 in the first direction, and the length of the second trace 82 extending along the second direction in the second sensing resistor R2 and the fourth sensing resistor R4 is relatively large, so the second sensing resistor R2 and the fourth sensing resistor R4 can detect the deformation of the display panel 100 in the second direction. Thus, in the pressure sensing stage, when each touch electrode 80 is reused as a pressure sensing electrode, each pressure sensing electrode can monitor the deformation of the display panel 100 in the first direction and the second direction through the sensing resistor therein.
Optionally, fig. 6 is a schematic view illustrating another structure of the touch electrode provided in the present application. The display panel 100 further includes a plurality of connection leads 32, and the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 are electrically connected to at least one of the connection leads 32 through the connection via 31, respectively; the connection via 31 is located on the first trace 81 and/or the second trace 82 in the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4, respectively.
Specifically, referring to fig. 6, each sensing resistor of the touch electrode 80 is provided with a connecting via 31, and each sensing resistor is electrically connected to one connecting lead 32 through the connecting via 31. Considering that the smaller the impedance of the touch electrode 80 is required to be, the better the smaller the impedance of the touch electrode 80 is, and the larger the impedance of the touch electrode 80 multiplexed as a pressure sensing electrode is, the better the shear force of the display panel 100 is required to be sensed in the pressure sensing stage, the greater the impedance of the touch electrode 80 multiplexed as a pressure sensing electrode is, the present application electrically connects the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 in each touch electrode 80 to the connection lead 32 by punching, respectively, in the pressure sensing stage, the connection lead 32 led out through the connection via 31 is floated, so that the impedance of the touch electrode 80 can be ensured to be sufficiently small, and in the touch stage, if all the connection leads 32 on the same touch electrode 80 are short-circuited, the resistance of the touch electrode 80 can be greatly reduced, so as to meet the principle that the touch electrode 80. Therefore, the size of the resistance of the touch electrode 80 can be flexibly changed by punching the touch electrode 80, and the requirements for the size of the resistance of the touch electrode 80 in the touch stage and the pressure sensing stage are met respectively. In addition, this application does not make the concrete requirement to connect the position and the quantity of via hole 31 in touch-control electrode 80, when actual operation, can set up connecting via hole 31 on the first line 81 of sensing resistor, also can set up on second line 82, in addition, in touch-control stage, for can reliably short circuit each sensing resistor, make the impedance of touch-control electrode 80 obtain effectively reducing, still can set up a plurality of connecting via holes 31 on every sensing resistor, with every via hole respectively with a connecting lead 32 electricity connection.
Optionally, the display panel 100 further includes a plurality of gate lines 13 extending in the row direction and arranged in the column direction, and a plurality of data signal lines 14 arranged in the row direction and extending in the column direction, the gate lines 13 and the data signal lines 14 being insulated and located at different film layers; the connection lead 32 is disposed in the same layer as the gate line 13 or the data signal line 14.
Specifically, fig. 7 is another top view of the display panel provided in the present application, and as can be seen from fig. 7, the display panel 100 includes a plurality of gate lines 13 and data signal lines 14, the gate lines 13 extend along a row direction and are arranged along a column direction, the data signal lines 14 extend along a column direction and are arranged along a row direction, and as can be seen from the cross-sectional view shown in fig. 1, the gate lines 13 and the data signal lines 14 in the present application are located on different film layers of the display panel 100, and are respectively located in different metal layers on the display panel 100. The connecting lead 32 electrically connected to each sense resistor in the touch electrode 80 through the connecting via 31 in the present application may be disposed on the same layer as the gate line 13 or the data signal line 14, so that a special metal layer does not need to be manufactured for the connecting lead 32, which is beneficial to saving cost and does not increase the thickness of the display panel 100, and does not increase the complexity of the stack of the display panel 100, thereby being beneficial to realizing the requirement of the display panel 100 for portability.
Optionally, two adjacent gate lines 13 and two adjacent data signal lines 14 intersect to define one sub-pixel unit 88, a length of a smaller one of the first routing line 81 and the second routing line 82 is greater than a length of at least one sub-pixel unit 88, and a length of the sub-pixel unit 88 is a distance between the sub-pixel units 88 in a column direction or a row direction.
Specifically, fig. 8 is a diagram illustrating a relative position relationship between a touch electrode and a sub-pixel unit provided in the present application, the sub-pixel unit 88 is defined by two adjacent gate lines 13 and two adjacent data signal lines 14 intersecting each other in fig. 7, each touch electrode 80 corresponds to a plurality of sub-pixel units 88, as can be seen from fig. 8, in the first sensing resistor R1 of each sensing resistor of the touch electrode 80, the longer trace spans the distance of 7 sub-pixel units 88 in the column direction, and the shorter trace spans the distance of 1 sub-pixel unit 88 in the row direction. The length of each trace in the touch electrode 80 is set according to the number of the sub-pixel units 88, and the length of each trace does not need to be measured, which is beneficial to simplifying the manufacturing process of the touch electrode 80. It should be noted that fig. 8 only schematically shows one trace form of each sensing resistor in the touch electrode 80, and in an actual production process, the actual trace form of the touch electrode 80 needs to be determined by combining the impedance of the touch electrode 80.
Optionally, the first direction and the second direction in this application are perpendicular, the first direction is a column direction, and the second direction is a row direction; alternatively, the angle between the first direction and the row direction is 45 °.
Specifically, in the embodiment shown in fig. 4 and 8, the first routing lines 81 in the sensing resistor of the touch electrode 80 extend along a first direction, which is the same as the column direction, and the second routing lines 82 extend along a second direction, which is the same as the row direction. When the touch electrodes 80 are disposed in this way, the touch electrodes 80 can respectively sense the shear forces of the display panel 100 in the row direction and the column direction in the pressure sensing stage. Of course, in addition to this manner, the embodiment shown in fig. 9 is another schematic configuration diagram of the touch electrode provided in the present application, and compared with the embodiment shown in the fig. 9, an included angle between the first direction in which the first trace 81 extends and the row direction is 45 ° in fig. 9, which is equivalent to that the touch electrode 80 is rotated by 45 ° in the clockwise direction or the counterclockwise direction on the basis of the embodiment shown in the fig., so that in the pressure sensing stage, the touch electrode 80 can respectively sense the shear force in the direction deviating from the row direction by 45 ° clockwise and the shear force in the direction deviating from the column direction by 45 ° counterclockwise. If the touch electrodes 80 in the embodiments shown in fig. 4 and 9 are simultaneously applied to the same display panel 100, the display panel 100 can sense more shear forces, and thus the application of the display panel 100 provided by the present application is wider. It should be noted that, when the touch electrode 80 of the present application is configured in the manner shown in fig. 9, the touch electrode 80 is usually required to be set in the form of a transparent electrode, because if the touch electrode is configured by a metal electrode, in order to not affect the display brightness and the effect of the display panel, the first trace 81 and the second trace 82 are required to be located in a non-open area of the display area, and considering the placement angle of the touch electrode 80, the first trace 81 and the second trace 82 inevitably form a zigzag trace at the sub-pixel position, so that the extending direction of the first trace 81 and the second trace 82 is not fixed, and therefore, the magnitude and the direction of the actual shearing force cannot be sensed well. When the touch electrode 80 is set as a transparent electrode, the position of the touch electrode in the display area does not need to be distinguished from the non-open area, the extending direction of the first wire 81 and the second wire 82 is fixed, the size and the direction of the shearing force applied to the display panel can be accurately sensed, and the pressure sensing performance of the display panel is favorably improved.
Optionally, referring to fig. 10, fig. 10 is a schematic diagram illustrating a connection relationship among the gate control circuit, the common lead and the connection lead provided in the present application, the display panel 100 further includes a gate control circuit 41 and at least one common lead 51, the gate control circuit 41 is located in the non-display region 12, a first end of the gate control circuit 41 is electrically connected to the control chip 90, a second end of the gate control circuit 41 is electrically connected to the common lead 51, and a third end of the gate control circuit 41 is electrically connected to the connection lead 32, respectively;
in the touch stage, the gate control circuit 41 is closed, and the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 in the touch electrode 80 are electrically connected with the common lead 51 through the connecting lead 32 respectively; in the pressure sensing stage, the gate control circuit 41 is turned off, and the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 are respectively disconnected from the common lead 51.
Specifically, referring to fig. 10, the gate control circuit 41 and the common lead 51 are introduced into the display panel 100, the common lead 51 is electrically connected to the connection lead 32 electrically connected to the touch electrode 80, and the connection lead 32 electrically connected to the sensing resistors (e.g., the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3, and the fourth sensing resistor R4) in the touch electrode 80 is shorted to the common lead 51 or the connection lead 32 is floated by controlling on or off of the gate control circuit 41, so as to change the resistance value of the touch electrode 80 at different time intervals. In the touch stage, the gating control circuit 41 is turned on, each sensing resistor is short-circuited to the common lead 51 through the connecting lead 32, which is equivalent to that a plurality of parallel sub-electrodes are added on the basis of the existing touch electrode 80, and after the plurality of sub-electrodes are connected in parallel, the total resistance of each sub-electrode is smaller than that of the original touch electrode, so that the resistance of the touch electrode 80 can be reduced, and the requirement of the touch electrode 80 on small impedance in the touch stage is met; in the pressure sensing stage, the gating control circuit 41 is turned off, the connecting leads 32 electrically connected with the sensing resistors of the touch electrodes 80 are all in a floating state, and at this time, the resistance of the touch electrodes 80 serving as the pressure sensing electrodes is large, so that the requirement of the pressure sensing stage on the maximum impedance of the pressure sensing electrodes is met. It should be noted that the common lead 51 and the connection lead 32 in the present application may be disposed in the same layer, fig. 10 only schematically shows the connection relationship between the gate control circuit and four sense resistors in one touch electrode 80, and the connection relationship between the other touch electrodes 80 and the gate control circuit 41 can refer to fig. 10.
Alternatively, fig. 11 is a schematic diagram illustrating another connection relationship among the gate control circuit, the common lead, and the connection lead provided in the present application. The gate control circuit 41 comprises a plurality of thin film transistors 411, the gates of the thin film transistors 411 are connected with the control chip 90, the first poles of the thin film transistors 411 are connected to the common lead 51, and the second poles of the thin film transistors 411 are respectively and correspondingly electrically connected with the connecting leads 32;
in the touch control stage, the thin film transistor 411 is closed, the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 are electrically connected with the common lead 51 through the connection via 31 and the connection lead 32, and the control chip 90 sends a touch control signal to the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4; in the pressure sensing stage, the thin film transistor 411 is turned off, the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4 are disconnected from the common lead 51, and the control chip 90 sends a bias voltage signal to the first sensing resistor R1, the second sensing resistor R2, the third sensing resistor R3 and the fourth sensing resistor R4.
Specifically, as can be seen from fig. 11, the gate control circuit 41 in the present application includes a plurality of thin film transistors 411, each thin film transistor 411 is disposed between the common lead 51 and the connection lead 32, and each thin film transistor 411 is controlled to be turned on or off by the control chip 90. In the touch control stage, the thin film transistor 411 is closed, the common lead 51 is electrically connected with the connecting leads 32, and each connecting lead 32 is electrically connected with the sensing resistor in the touch control electrode 80, so that when the common lead 51 is connected with the connecting leads 32, each touch control electrode 80 is short-circuited to the common lead 51, so that the impedance of the touch control electrode 80 is reduced, and the requirement of the touch control electrode 80 on low impedance in the touch control stage is met; in the pressure sensing stage, the thin film transistor 411 is disconnected, the common lead 51 and the connection lead 32 are disconnected, so that the connection lead 32 electrically connected with each touch electrode 80 is floated, the resistance of the touch electrode 80 multiplexed as the pressure sensing electrode is increased, and the requirement of the pressure sensing electrode on high impedance in the pressure sensing stage is met. Thus, the display panel 100 provided by the present application can perform a good touch function in the touch stage and can perform a good pressure sensing function in the pressure sensing stage.
Optionally, referring to fig. 4, the touch electrode 80 in the present application is a self-contained electrode, and in the touch stage, the control chip 90 sends a touch signal to the self-contained electrode through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94, and receives a touch detection signal through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94.
Generally, the touch electrode 80 in the touch display panel 100 is divided into two types, namely a self-capacitance electrode and a mutual capacitance electrode, the touch electrode 80 in the present application can be used as a self-capacitance electrode, when the self-capacitance electrode is used as a self-capacitance electrode, all four signal terminals in the self-capacitance electrode in the embodiment shown in fig. 4 are used as signal input terminals of the self-capacitance electrode, in a touch stage, the control chip 90 sends a touch signal to the self-capacitance electrode through the four signal terminals, and when a touch occurs, the four signal terminals in the self-capacitance electrode are used as signal output terminals of the self-capacitance electrode to send a touch detection signal to the control chip 90, so that the touch function of the display panel 100 is realized.
Optionally, fig. 12 is a schematic view illustrating another structure of the touch electrode provided in the present application. The display panel 100 in the present application further includes a touch sensing electrode 85, the touch sensing electrode 85 and the touch electrode 80 shown in fig. 4 form a mutual capacitance, and in a touch stage, the control chip 90 inputs a touch signal to the touch electrode 80 through the first signal terminal 91, the second signal terminal 92, the third signal terminal 93 and the fourth signal terminal 94, and receives a touch detection signal fed back by the touch sensing electrode 85; in the pressure sensing stage, the touch electrode 80 is reused as a pressure sensing electrode.
Specifically, referring to fig. 12, when the touch of the display panel 100 in the present application is in a mutual capacitance mode, the display panel 100 in the present application further includes a touch sensing electrode 85 on the basis of the provided touch electrode 80, and the touch electrode 80 in the present application is used as a touch driving electrode to form a mutual capacitance structure with the touch sensing electrode 85. In the touch stage, the first signal terminal 91, the second signal terminal 92 and the third signal terminal 93 in the touch electrode 80 of the present application serve as input terminals of the touch driving electrode, receive the touch signal sent by the control chip 90, and when the touch driving electrode receives an external touch, the touch sensing electrode 85 feeds back a touch detection signal to the control chip 90. In the pressure sensing stage, the touch driving electrode is multiplexed as a pressure sensing electrode, the first signal terminal 91 and the second signal terminal 92 are used as input terminals of the pressure sensing electrode to receive the bias voltage sent by the control chip 90, and the third signal terminal 93 and the fourth signal terminal 94 are used as output terminals of the pressure sensing electrode to send a pressure sensing signal to the control chip 90.
Optionally, the material of the touch electrode 80 includes metal, and the touch electrode 80 is located in the non-opening area of the display area 11.
In general, a black matrix region is usually disposed in a display region of a display panel, and the black matrix region divides the display region of the display panel into a transparent region and an opaque region, the transparent region allows light to pass through, and is usually called an opening region, and the opaque region is usually called a non-opening region. Each sub-pixel in the display panel is generally disposed in an open area, and signal lines such as gate lines, data signal lines, etc. in the display area are disposed in a non-open area of the display area. Touch-control electrode 80 can adopt the metal material in this application, because touch-control electrode 80 is located display area 11, for the normal demonstration that does not influence display panel 100, avoids disturbing the regional demonstration luminance that passes through light, and this application sets up touch-control electrode 80 in the non-opening area of display area 11, is favorable to avoiding reducing the aperture opening ratio of the display panel 100 that this application provided.
Optionally, in addition to the touch electrode 80 in the present application using a metal material, the touch electrode 80 includes indium tin oxide, and the touch electrode 80 is located in an open area or a non-open area of the display area 11. Considering that ito is a transparent material and does not affect the aperture ratio of the display panel 100, the touch electrode 80 made of ito can be disposed in the non-aperture region of the display region 11 or the aperture region of the display region 11, and neither of the two methods will affect the normal display of the display panel 100.
Based on the same inventive concept, the present application further provides a display device, referring to fig. 13, fig. 13 is a schematic structural diagram of the display device provided in the present application, and the display device 200 provided in the present application includes a display panel 100, where the display panel 100 is the display panel 100 provided in the present application. The display device provided by the application can be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. In the present application, the embodiment of the display device 200 can refer to the embodiment of the display panel 100, and repeated descriptions are omitted here.
According to the embodiments, the application has the following beneficial effects:
in the display panel and the display device provided by the invention, each touch electrode comprises at least one sensing resistor, each sensing resistor comprises a first routing extending along a first direction and a second routing extending along a second direction, and the first routing and the second routing are alternately and electrically connected; and in the touch stage, the touch electrode plays a touch function and receives a touch signal sent by the control chip. Therefore, time-sharing multiplexing of the touch electrode is realized. This application is multiplexing as the forced induction electrode with touch-control electrode, need not additionally to increase components and parts such as forced induction electrode layer or pressure-sensitive coil in display panel, can additionally not increase display panel's manufacturing cost, can not increase the complexity that display panel and display device are stromatolite yet, and application that can be better is in light, bendable display panel and display device.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (15)
1. A display panel characterized by being provided with a display area and a non-display area surrounding the display area, the display panel comprising:
the control chip is positioned in the non-display area;
the touch electrodes are arranged in the display area and are arranged in an array mode, each touch electrode comprises at least two sensing resistors, each sensing resistor comprises a first routing wire extending along a first direction and a second routing wire extending along a second direction, the first routing wires and the second routing wires are electrically connected in an alternating mode, and the first direction is crossed with the second direction;
in a touch stage, the control chip sends a touch signal to the touch electrode; in a pressure sensing stage, the touch electrode is reused as a pressure sensing electrode, and the control chip inputs a bias voltage signal to the pressure sensing electrode;
the display panel also comprises a plurality of connecting leads, and the induction resistor is electrically connected with at least one connecting lead through a connecting through hole;
for one touch electrode, in the pressure induction stage, all the connecting leads are floated, and in the touch stage, all the connecting leads are in short circuit.
2. The display panel according to claim 1, characterized in that: the resistance value of the induction resistor is more than or equal to 1k omega and less than or equal to 100k omega.
3. The display panel according to claim 1, characterized in that: each touch electrode comprises a first induction resistor, a second induction resistor, a third induction resistor and a fourth induction resistor which have the same resistance value, and a first signal end, a second signal end, a third signal end and a fourth signal end;
the first end of the first sensing resistor and the first end of the fourth sensing resistor are electrically connected with the first signal end, the second end of the first sensing resistor and the first end of the second sensing resistor are electrically connected with the third signal end, the second end of the fourth sensing resistor and the first end of the third sensing resistor are electrically connected with the fourth signal end, and the second end of the second sensing resistor and the second end of the third sensing resistor are electrically connected with the second signal end;
in the touch stage, the control chip sends a touch signal to the touch electrode through the first signal end, the second signal end, the third signal end and the fourth signal end; in the pressure sensing stage, the control chip sends a bias voltage signal to the pressure sensing electrode through the first signal end and the second signal end, and receives a pressure sensing detection signal through the third signal end and the fourth signal end.
4. The display panel according to claim 3, wherein:
the length of a first wire in the first sensing resistor and the third sensing resistor is greater than that of a second wire, and the length of the first wire in the second sensing resistor and the fourth sensing resistor is less than that of the second wire.
5. The display panel according to claim 4, wherein: the first induction resistor, the second induction resistor, the third induction resistor and the fourth induction resistor are electrically connected with at least one connecting lead through connecting through holes respectively;
the connecting through holes are respectively positioned on the first walking line and/or the second walking line in the first induction resistor, the second induction resistor, the third induction resistor and the fourth induction resistor.
6. The display panel according to claim 5, wherein: the display panel also comprises a plurality of gate lines extending along the row direction and arranged along the column direction and a plurality of data signal lines arranged along the row direction and extending along the column direction, wherein the gate lines and the data signal lines are insulated and positioned on different film layers;
the connecting lead and the grid line or the data signal line are arranged in the same layer.
7. The display panel according to claim 6, wherein: two adjacent gate lines and two adjacent data lines intersect to define a sub-pixel unit, the length of the smaller one of the first routing line and the second routing line is greater than the length of at least one sub-pixel unit, and the length of the sub-pixel unit is the distance of the sub-pixel unit in the column direction or the row direction.
8. The display panel according to claim 5, wherein: the first direction and the second direction are perpendicular,
the first direction is a column direction, and the second direction is a row direction; alternatively, the first and second electrodes may be,
the angle between the first direction and the row direction is 45 °.
9. The display panel according to claim 5, wherein: the display panel further comprises a gating control circuit and at least one public lead, the gating control circuit is located in the non-display area, a first end of the gating control circuit is electrically connected with the control chip, a second end of the gating control circuit is electrically connected with the public lead, and a third end of the gating control circuit is electrically connected with the connecting lead respectively;
in a touch stage, the gating control circuit is closed, and the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor in the touch electrode are electrically connected with the common lead through the connecting lead respectively; in the pressure sensing stage, the gating control circuit is disconnected, and the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are respectively disconnected with the common lead.
10. The display panel according to claim 9, wherein: the gate control circuit comprises a plurality of thin film transistors, the grid electrodes of the thin film transistors are connected with the control chip, the first poles of the thin film transistors are connected to the common lead, and the second poles of the thin film transistors are respectively and correspondingly electrically connected with the connecting leads one by one;
in a touch control stage, the thin film transistor is closed, the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are electrically connected with the common lead through the connecting via hole and the connecting lead, and the control chip sends a touch control signal to the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor; in the pressure sensing stage, the thin film transistor is disconnected, the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor are disconnected with the common lead, and the control chip sends bias voltage signals to the first sensing resistor, the second sensing resistor, the third sensing resistor and the fourth sensing resistor.
11. The display panel according to claim 3, wherein: the touch control electrode is a self-contained electrode, and in the touch stage, the control chip sends a touch control signal to the self-contained electrode through the first signal end, the second signal end, the third signal end and the fourth signal end and receives a touch control detection signal through the first signal end, the second signal end, the third signal end and the fourth signal end.
12. The display panel according to claim 3, wherein: the touch control sensing electrode and the touch control electrode form mutual capacitance, and in the touch stage, the control chip inputs a touch control signal to the touch control electrode through the first signal end, the second signal end, the third signal end and the fourth signal end and receives a touch control detection signal fed back by the touch control sensing electrode; in the pressure sensing stage, the touch electrode is reused as the pressure sensing electrode.
13. The display panel according to claim 1, characterized in that: the touch electrode is made of metal and is located in a non-opening area of the display area.
14. The display panel according to claim 1, characterized in that: the touch electrode is made of indium tin oxide and is positioned in an opening area or a non-opening area of the display area.
15. A display device comprising a display panel, wherein the display panel is the display panel according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646772.6A CN107491206B (en) | 2017-08-01 | 2017-08-01 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646772.6A CN107491206B (en) | 2017-08-01 | 2017-08-01 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107491206A CN107491206A (en) | 2017-12-19 |
| CN107491206B true CN107491206B (en) | 2020-10-16 |
Family
ID=60644796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710646772.6A Active CN107491206B (en) | 2017-08-01 | 2017-08-01 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107491206B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920777A (en) | 2018-06-22 | 2019-06-21 | 京东方科技集团股份有限公司 | Display panel and its manufacturing method, display device and control method |
| CN108874223B (en) * | 2018-06-27 | 2021-08-10 | 上海天马微电子有限公司 | Display panel and display device |
| CN109669571B (en) * | 2018-12-12 | 2020-11-24 | 武汉华星光电半导体显示技术有限公司 | Touch panel and electronic device |
| CN110023891B (en) * | 2019-01-09 | 2022-11-25 | 京东方科技集团股份有限公司 | Pressure touch structure, pressure touch panel and display device |
| CN109473057B (en) * | 2019-01-15 | 2021-10-22 | 成都京东方光电科技有限公司 | Stretchable display panel, display method thereof and display device |
| CN111158526B (en) * | 2019-12-30 | 2024-04-16 | 武汉天马微电子有限公司 | Touch display substrate, organic electroluminescent display panel and display device |
| CN111430370B (en) * | 2020-03-31 | 2023-03-21 | 厦门天马微电子有限公司 | Display panel and display device |
| CN112162657B (en) * | 2020-10-12 | 2024-04-12 | 昆山龙腾光电股份有限公司 | Touch panel and touch device |
| CN114216963A (en) * | 2021-12-15 | 2022-03-22 | 京东方科技集团股份有限公司 | Ultrasonic detection substrate and ultrasonic detection device |
| CN114578997A (en) * | 2022-03-11 | 2022-06-03 | Tcl华星光电技术有限公司 | Display panel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007465A (en) * | 2008-02-28 | 2011-04-06 | 纽约大学 | Method and apparatus for providing input to a processor, and a sensor pad |
| CN203502710U (en) * | 2013-10-12 | 2014-03-26 | 北京京东方光电科技有限公司 | Array substrate and liquid crystal display device |
| CN105867699A (en) * | 2016-06-20 | 2016-08-17 | 上海天马微电子有限公司 | Display panel and touch-control pressure detection method |
| CN105975137A (en) * | 2016-07-07 | 2016-09-28 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| KR101761361B1 (en) * | 2016-04-04 | 2017-07-25 | 엘지디스플레이 주식회사 | Touch display apparatus, back light unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8780074B2 (en) * | 2011-07-06 | 2014-07-15 | Sharp Kabushiki Kaisha | Dual-function transducer for a touch panel |
-
2017
- 2017-08-01 CN CN201710646772.6A patent/CN107491206B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007465A (en) * | 2008-02-28 | 2011-04-06 | 纽约大学 | Method and apparatus for providing input to a processor, and a sensor pad |
| CN203502710U (en) * | 2013-10-12 | 2014-03-26 | 北京京东方光电科技有限公司 | Array substrate and liquid crystal display device |
| KR101761361B1 (en) * | 2016-04-04 | 2017-07-25 | 엘지디스플레이 주식회사 | Touch display apparatus, back light unit |
| CN105867699A (en) * | 2016-06-20 | 2016-08-17 | 上海天马微电子有限公司 | Display panel and touch-control pressure detection method |
| CN105975137A (en) * | 2016-07-07 | 2016-09-28 | 上海天马微电子有限公司 | Touch display panel and touch display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107491206A (en) | 2017-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107491206B (en) | Display panel and display device | |
| US20230325019A1 (en) | Touch sensor and display device including the same | |
| US20230273701A1 (en) | Touch sensor and display device including the same | |
| CN107479757B (en) | Display panel and display device | |
| CN107463295B (en) | Display panel, driving method thereof and display device | |
| CN107340915B (en) | Display substrate, display panel and display device | |
| US20210278930A1 (en) | Touch sensor and display device | |
| US10754458B2 (en) | Touch screen and display device having the same | |
| CN107479759B (en) | Pressure touch display panel, detection method and display device | |
| CN103872081B (en) | Organic light-emitting diode (OLED) display apparatus including touch pad | |
| CN107340927B (en) | Display panel and display device | |
| CN107561761B (en) | Display panel, driving method thereof and display device | |
| CN108319394A (en) | Touch panel and its driving method, touch device | |
| KR101979891B1 (en) | Touch sensor and display device having the touch sensor | |
| CN107315506B (en) | Display substrate, display panel and display device | |
| KR20160087981A (en) | Display device | |
| CN107219957B (en) | Array substrate and display panel | |
| CN113076028A (en) | Display panel and electronic device | |
| CN110413147A (en) | Touch sensor including touch-sensing electrode | |
| CN109062441B (en) | Array substrate | |
| KR20200052485A (en) | Touch sensor and display device | |
| CN107015685A (en) | The display device of integrated touch screen panel | |
| KR101960076B1 (en) | Display device | |
| CN114385031A (en) | Display device having input sensor with cross-line elements | |
| CN112789582B (en) | Touch display panel, driving circuit board, touch display device and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |