CN108132557B - Touch display panel, touch display device and anti-static method - Google Patents
Touch display panel, touch display device and anti-static method Download PDFInfo
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- CN108132557B CN108132557B CN201810063599.1A CN201810063599A CN108132557B CN 108132557 B CN108132557 B CN 108132557B CN 201810063599 A CN201810063599 A CN 201810063599A CN 108132557 B CN108132557 B CN 108132557B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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Abstract
The invention discloses a touch display panel, a touch display device and an anti-static method, wherein the touch display panel is provided with a display area and a non-display area surrounding the display area, the display area comprises a plurality of gate lines and a plurality of data lines, the gate lines and the data lines are crossed to define a pixel area, and a pixel electrode is arranged in the pixel area; the pixel electrode is coupled with the data line through a first switch; the non-display area is provided with at least one virtual data line, and the virtual data line and the gate line are crossed to define a virtual pixel area; the virtual data line is arranged at the periphery of the data line; the virtual data line is electrically connected with the second switch; the non-display area is also provided with at least one pressure sensing element, and the pressure sensing element comprises a first input end, a second input end, a first output end and a second output end; at least one of the first input terminal, the second input terminal, the first output terminal and the second output terminal is coupled to the dummy data line; the virtual data line is connected with a fixed low potential. A touch display device and an anti-static method are also disclosed.
Description
Technical Field
The invention relates to the field of display, in particular to a touch display panel, a touch display device and an anti-static method.
Background
At present, touch panels are widely used in electronic devices such as mobile phones, tablet computers, and information query machines in halls of public places. Therefore, the user can operate the electronic equipment by touching the mark on the electronic equipment with fingers, dependence of the user on other input equipment (such as a keyboard, a mouse and the like) is eliminated, and man-machine interaction is simpler. In addition, in order to enrich the man-machine touch operation, a pressure sensor for sensing the pressure is usually added in the display panel. Therefore, the display panel can sense the touch position of a consumer and also can sense the touch pressure, so that the operation is enriched.
In the prior art, the pressure-sensitive elements are mostly arranged in the non-display area at the periphery of the display area, and the resistance of the pressure-sensitive elements is large. Therefore, the pressure-sensitive element is relatively susceptible to external static electricity and static electricity generated during the operation of the pressure-sensitive element. When the static electricity is accumulated too much and cannot be guided, the pressure sensing element is easily broken down by the static electricity and cannot operate normally. And the electrostatic ring that sets up in the existing design can't prevent effectively that the static of pressure-sensitive element from puncturing.
Disclosure of Invention
In order to solve the above problems, the present invention provides a touch display panel having a display area and a non-display area surrounding the display area, wherein,
the display area comprises a plurality of gate lines and a plurality of data lines, the gate lines and the data lines are crossed to define a pixel area, and a pixel electrode is arranged in the pixel area;
the pixel electrode is coupled with the data line through a first switch;
the non-display area is provided with at least one virtual data line, and the virtual data line and the gate line are crossed to define a virtual pixel area;
the virtual data line is arranged at the periphery of the data line;
the virtual data line is electrically connected with a second switch;
the non-display area is also provided with at least one pressure sensing element, and the pressure sensing element comprises a first input end, a second input end, a first output end and a second output end;
at least one of the first input, the second input, the first output, and the second output is coupled to the dummy data line;
the virtual data line is connected with a fixed low potential.
The touch display device comprises the touch display panel.
An anti-static method is further provided, which is used for the touch display panel described above, where the display panel includes a display stage and a blank stage, where in the blank stage, the second switch is turned on, at least one of the first input terminal, the second input terminal, the first output terminal, and the second output terminal is connected to the fixed low potential, static electricity accumulated on the pressure sensing element flows to the virtual data line, and the pressure sensing element starts to discharge.
Compared with the prior art, the technical scheme of the invention has one of the following advantages: the touch display panel is provided with data lines and virtual data lines, and the data lines and the virtual data lines are respectively crossed with the gate lines to define pixel areas and virtual pixel areas; the virtual pixel area is arranged at the periphery of the pixel area, the pressure sensing element arranged in the non-display area is coupled with the virtual data line through a second switch in the virtual pixel area, and the virtual data line is connected with a fixed low potential. In the display stage, the second switch is conducted through the gate line, so that static electricity accumulated on the pressure sensing element flows to a fixed low potential through the virtual data line; in a blank stage except the display stage, the second switch can be conducted through an external control line, so that static electricity accumulated on the pressure sensing element flows to a fixed low potential through the virtual data line. By multiplexing the switches and the dummy data lines in the dummy pixel region, the electrostatic current path of the pressure sensitive element is increased, and electrostatic accumulation of the pressure sensitive element is effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic plan view of a touch display panel according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a touch display panel according to an embodiment of the present invention;
fig. 3 is a schematic connection diagram of another touch display panel according to an embodiment of the invention;
fig. 4 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention;
fig. 5 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention;
fig. 6 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention;
fig. 7 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention;
FIG. 8 is a schematic view of a pressure sensing device provided on a touch display panel according to the present invention;
FIG. 9 is a schematic view of another pressure sensing device provided on a touch display panel according to the present invention;
fig. 10 is a schematic view of a touch display device according to an embodiment of the invention.
Detailed Description
A touch display panel, a touch display device and an anti-static method according to the present invention will be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, and it is to be understood that those skilled in the art can modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention provides a touch display panel, which has a display area and a non-display area surrounding the display area, wherein,
the display area comprises a plurality of gate lines and a plurality of data lines, the gate lines and the data lines are crossed to define a pixel area, and a pixel electrode is arranged in the pixel area;
the pixel electrode is coupled with the data line through a first switch;
the non-display area is provided with at least one virtual data line, and the virtual data line and the gate line are crossed to define a virtual pixel area;
the virtual data line is arranged at the periphery of the data line;
the virtual data line is electrically connected with a second switch;
the non-display area is also provided with at least one pressure sensing element, and the pressure sensing element comprises a first input end, a second input end, a first output end and a second output end;
at least one of the first input, the second input, the first output, and the second output is coupled to the dummy data line;
the virtual data line is connected with a fixed low potential.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic plan view of a touch display panel according to an embodiment of the present invention, in which the touch display panel has a display area AA and a non-display area NAA surrounding the display area AA. In the display area AA including a plurality of gate lines 11 and a plurality of data lines 12, the non-display area NAA is provided with at least one dummy data line 22. The dummy data line 22 is disposed at the periphery of the data line 12. In addition, the non-display area NAA is provided with a plurality of pressure sensitive elements 5.
Specifically, fig. 2 is a schematic connection diagram of a touch display panel according to an embodiment of the present invention, and the embodiment is described with reference to fig. 1 and fig. 2. The gate line 11 and the data line 12 in the display area AA intersect to define a pixel area 10, and a pixel electrode 13 is disposed in the pixel area 10. The pixel electrode 13 is coupled to the data line 12 through a first switch 31. The control end of the first switch 31 is electrically connected to the corresponding gate line 11, the first end of the first switch 31 is electrically connected to the corresponding data line 12, and the second end of the first switch 31 is electrically connected to the pixel electrode 13. In the display phase, the gate line 11 receives a scan signal for controlling the on/off of the first switch 31, the data line 12 receives a data signal, and the data signal is transmitted to the pixel electrode 13 through the first switch 31, and the pixel electrode 13 and a common electrode (not shown) form an electric field to drive the liquid crystal in the display panel to rotate.
Specifically, the non-display area NAA is provided with at least one virtual data line 22, and the drawing takes the non-display area NAA located on one side of the display area AA as an example, and one virtual data line 22 is provided. The embodiment of the present invention is not limited to this, and one or more virtual data lines 22 may be disposed in the non-display area NAA on the other side of the display area AA. The dummy data line 22 crosses the gate line 11 to define a dummy pixel region 20. As shown, the dummy pixel region 20 is disposed outside the pixel region 10. In addition, a second switch 32 is provided, and the dummy data line 22 is electrically connected to the second switch 32.
Specifically, the non-display area NAA is provided with at least one pressure-sensitive element 5, and the pressure-sensitive element 5 includes a first input terminal IN1, a second input terminal IN2, a first output terminal OUT1, and a second output terminal OUT 2. At least one of the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1 and the second output terminal OUT2 is coupled to the dummy data line 22. as shown, the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1 and the second output terminal OUT2 of the pressure-sensitive element 5 are coupled to the dummy data line 22. Also, the dummy data line 22 is connected to a fixed low potential 6, which fixed low potential 6 may be a ground potential.
In the touch display panel, the gate lines 11 extend along a first direction X and are sequentially arranged along a second direction Y; the data lines 12 extend in the second direction Y and are sequentially arranged in the first direction X. Also, the dummy data line 22 is disposed in parallel with the data line 11, i.e., the dummy data line 22 extends in the second direction Y.
Specifically, the first switch 31 and the second switch 32 may be thin film transistor switches. When the second switch 32 is a thin film transistor switch, at least one of the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1, and the second output terminal OUT2 of the pressure-sensitive element 5 is electrically connected to the first terminal of the second switch 32. The dummy data line 22 is electrically connected to the second terminal of the second switch 32, and the gate line 11 is electrically connected to the control terminal of the second switch 32. Alternatively, each of the pressure-sensitive elements 5 may be electrically connected to the dummy data line 22 through the second switch 32, which is not limited herein.
The embodiment of the invention is used as an anti-static lead of the pressure sensing element 5 by multiplexing the dummy data lines 22 in the dummy pixel region 20. At the display timing, the gate lines input signals step by step, and thus the second switches 32 are turned on one by one or a plurality at the same timing. The respective input/output terminals of the pressure sensitive element 5 conduct the static electricity accumulated in the pressure sensitive element 5 to a fixed low potential connected to the dummy data line 22 via the turned-on second switch 32. The invention does not need to add new conductive wires, is beneficial to reducing the frame and is beneficial to the discharge of the pressure-sensitive element 5.
Specifically, taking the high-resolution display screen as an example, the total number of the virtual pixel regions is 1920, the single-side non-display area NAA is provided with 4 pressure-sensitive elements, and four ports of each pressure-sensitive element are coupled to the virtual data lines. Specifically, a total of 16 input/output ports are connected to 1920 second switches, and each port may be electrically connected to 120 second switches. Taking the display refresh frequency of 60Hz as an example, the discharge period T of each input/output port is 1/60/120, which is approximately equal to 138.89us, which is equivalent to seven thousand times of discharge of each input/output port, thereby realizing the function of discharging static electricity at high frequency.
Fig. 3 is a connection diagram of another touch display panel according to an embodiment of the invention, and taking fig. 3 as an example, fig. 3 shows that the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1 and the second output terminal OUT2 of the pressure-sensitive element 5 are all coupled to a dummy data line 22 through the second switch 32.
Specifically, along the extending direction of the virtual data line 22, the second switches 32 are sequentially arranged, which are respectively a 1th second switch, a 2th second switch to an N +3th second switch, where N is an integer greater than or equal to 1. The Nth second switch, the N +1th second switch, the N +2th second switch and the N +3th second switch are taken as a unit, wherein N is an integer greater than or equal to 1, and each unit corresponds to one pressure sensing element 5. Alternatively, one pressure-sensitive element 5 may correspond to a plurality of cells to achieve high-frequency multiple discharge of static electricity. And 4 continuous virtual pixel regions are used as static electricity releasing units, so that the design layout is simplified, and the conventional design layout can be used. The present embodiment does not limit the specific corresponding form of the pressure sensing element 5 and the static electricity discharging unit, and any embodiment that can embody the content of the present invention falls within the protection scope of the present invention.
In order to improve the electrostatic discharge capability of the input or output end of the pressure-sensitive element, a plurality of second switches can be connected with one port. As shown in fig. 4, fig. 4 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention. At least one of the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1, and the second output terminal OUT2 is coupled to the dummy data line 22 through a plurality of second switches 32. Fig. 4 exemplarily shows that the second input terminal IN2 of the pressure-sensitive element 5 is electrically connected to the plurality of second switches 32, but the embodiment of the present invention is not limited thereto, and all of the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1 and the second output terminal OUT2 may be electrically connected to the plurality of second switches 32. Any embodiment consistent with the present invention is intended to be included within the scope of the present invention. Specifically, fig. 4 shows that the second input terminal IN2 of the pressure-sensitive element 5 is electrically connected to the 4 second switches 32, and the 4 second switches 32 are continuous. The voltage sensing device 5, the second switch 32 and the dummy data line 22 are similar to those of the previous embodiments, and are not described herein again.
Similarly, taking FHD high resolution display screen as an example, the virtual pixel area has 1920 second switches IN total, the single-side non-display area NAA is provided with 4 pressure-sensitive elements, the second input terminal IN2 of each pressure-sensitive element can be electrically connected to 480 second switches, taking the display refresh frequency as an example, the discharge period T of each input/output port is 1/60/480, which is equivalent to two thousand, nine thousand or more times of discharge of each input/output port, so that the effect of releasing static electricity at high frequency is realized, static electricity accumulated on the pressure-sensitive elements can be released IN real time, and element damage is prevented.
In addition, fig. 5 is a schematic connection diagram of another touch display panel according to an embodiment of the present invention, and fig. 5 is different from fig. 4 in that the connection sequence between the pressure sensing element 5 and the second switch 32 in fig. 5 is not regular. For example, the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1, and the second output terminal OUT2 of the pressure-sensitive element 5 may be electrically connected to the N th second switch, the N +5th second switch, the N +7th second switch, and the N +10th second switch, respectively, and the second switches 32 corresponding to the respective ports may be discontinuous IN jumping. The layout design can reduce the occupation of wiring and frame space to a certain extent. The ground potential of the dummy data line 22 connected to the second switch 32 can be effectively used for discharging the pressure sensitive element 5.
In order to better enhance the electrostatic discharge capability of the pressure-sensitive element 5, the embodiment can be further illustrated in fig. 6, and fig. 6 is a connection schematic diagram of another touch display panel provided by the embodiment of the present invention. The display panel further includes a control line 7, and the control line 7 is disposed at a side of the dummy data line 22 adjacent to the display area. The control line 7 may be located in either the display region or the non-display region. Specifically, the control line 7 is parallel to the dummy data line 22 and connected to the control terminal, and at this time, the gate line 11 is not connected to the control terminal of the second switch 32. The control terminals of the second switches 32 are electrically connected to the control line 7, and as shown in fig. 6, all the second switches 32 located in the dummy pixel region are electrically connected to the control line 7. Other connection modes of the second switch 32 are the same as those of the above embodiments, and the description of the similar parts is omitted.
Specifically, by adding the control line 7, in the display stage, the second switches 32 are all turned on through the control line 7, so that the pressure sensitive elements 5 and the dummy data lines 22 are all grounded and discharged at the same time; in the non-display stage, i.e. the blank stage except the display stage, the control line 7 receives the control signal transmitted from the control terminal, controls the second switch 32 to be fully turned on, and the pressure-sensitive element 5 is grounded and discharged after being connected with the dummy data line 22. The embodiment of the invention can realize high-frequency multiple discharge in the display stage and continuous grounding discharge in the non-display stage.
Specifically, as shown in the embodiments of fig. 3 to 6, the dummy data lines 22 are all at ground potential, so that the static electricity accumulated on the pressure-sensitive element 5 can be effectively ensured to flow to the ground potential end. In the above embodiment, the dummy data lines 22 in the dummy pixel regions are multiplexed, and the dummy data lines 22 are grounded to increase the electrostatic conduction capability of the pressure sensitive element 5. In addition, the second switch 32 of the multiplexing dummy pixel region can conduct effective electrostatic conduction during the non-operation period of the pressure sensitive element 5 by turning on and off the second switch 32.
Optionally, fig. 7 is a connection diagram of another touch display panel according to an embodiment of the present invention, where the touch display panel includes a first input trace L1 and a second input trace L2, the first input ends IN1 of all pressure-sensitive elements 5 located on the same side are electrically connected to the first input trace L1, and the second input ends IN2 of all pressure-sensitive elements 5 are electrically connected to the second input trace L2. Taking 4 pressure sensing elements 5 on one side of the touch display panel as an example, the first input end IN1 and the second input end IN2 of the 4 pressure sensing elements share the first input trace L1 and the second input trace L2, and each pressure sensing element 5 is further provided with a first output line and a second output line (not shown IN the figure), so that the side of the touch display panel has 10 pressure sensing traces, 2+4 × 2. Still take FHD high resolution display screen as an example, the virtual pixel area has 1920 second switches in total, the input end and the output end of each pressure sensing element are electrically connected to the second switch to connect to the virtual data line for discharging, each end can be connected to 192 second switches, the display refresh frequency is 60Hz as an example, the discharge period T of each input/output port is 1/60/192, which is approximately equal to 86us, which is equivalent to that each input/output port is grounded ten thousand times, and discharges ten thousand times, so that high-frequency electrostatic discharge is realized, the electrostatic breakdown problem is prevented, and the pressure sensing elements and the pressure sensing circuit are protected.
Alternatively, the pressure-sensing element 5 may be a wheatstone bridge type pressure sensor, as shown in fig. 8, and fig. 8 is a schematic diagram of a pressure-sensing element provided by the touch display panel of the present invention. The pressure-sensitive element 5 includes a first strain pressure sensor R1, a second strain pressure sensor R2, a third strain pressure sensor R3, and a fourth strain pressure sensor R4, and further includes a first input terminal IN1, a second input terminal IN2, a first output terminal OUT1, and a second output terminal OUT 2. The first strain pressure sensor R1 is connected IN series between the first input terminal IN1 and the first output terminal OUT1, the second strain pressure sensor R2 is connected IN series between the second input terminal IN2 and the second output terminal OUT2, the third strain pressure sensor R3 is connected IN series between the second input terminal IN2 and the second output terminal OUT2, and the fourth strain pressure sensor R4 is connected IN series between the first input terminal IN1 and the second output terminal OUT 2. The wheatstone bridge pressure sensor may be comprised of a metal, wherein the first through fourth strain gauge pressure sensors may be serpentine, which may increase resistance while reducing temperature effects.
In addition, the pressure-sensitive element 5 may also be a silicon piezoresistive pressure sensor, for example, as shown in fig. 9, fig. 9 is a schematic view of another pressure-sensitive element provided by the touch display panel of the present invention. The center of the pressure-sensitive element 5 is a silicon wafer made of silicon Si, and the four sides thereof are electrically connected to the first input terminal IN1, the second input terminal IN2, the first output terminal OUT1 and the second output terminal OUT2, respectively. The pressure sensing element 5 has the advantage of small size, and is easily integrated into the touch screen. In addition, the pressure-sensitive element has the advantages of higher strain voltage and automatic temperature compensation, and can be directly made of the same material as the silicon material film layer in the glass substrate in the same manufacturing process, so that one material film manufacturing process can be effectively reduced, the manufacturing process of the array substrate is simplified, and the manufacturing cost is reduced.
The invention also discloses an antistatic method, which is used for the touch display panel in the embodiments of fig. 1 to 9. The touch display panel comprises a display stage, a pressure sensing stage and a blank stage, wherein the blank stage is a stage except the display stage and the pressure sensing stage, and display charging and pressure sensing detection are not carried out in the process of the display stage and the pressure sensing stage.
Specifically, in the display stage, as shown in the structure diagram of the embodiment of fig. 1 to 9, the gate lines 11 in the display panel receive signals stage by stage through the gate driving circuit. The gate line 11 receiving the driving signal turns on the corresponding second switch 32, and it can be understood that the pressure-sensitive element 5 is not in an operating state. After the second switch 32 is turned on, the port of the pressure-sensitive element 5 corresponding to the second switch 32 is connected to the dummy data line 22 through the second switch 32, and the dummy data line 22 is grounded, so that the pressure-sensitive element 5 can be grounded to conduct away the accumulated voltage during the display period. In addition, since the second switches 32 are sequentially turned on, the respective ports of the pressure-sensitive element 5 can be sequentially grounded.
As shown in fig. 7, when the touch display panel includes the control line 7, the second switch 32 is not connected to the gate line 11 at this time. The control line 7 is electrically connected to the control terminal of the second switch 32, and is used for controlling the on/off of the second switch 32. In the display period and the blank period, the control line 7 receives a corresponding control signal, and the second switch 32 electrically connected to the control line 7 is turned on. Taking fig. 7 as an example, all the second switches 32 on one side of the touch display panel can be electrically connected to the control line 7. At this time, all the second switches 32 are turned on, and the pressure sensitive elements 5 connected to the corresponding second switches 32 are grounded through the dummy data lines 22. Since the control line 7 controls the second switch 32 alone, the pressure-sensitive element 5 can continuously conduct away the accumulated static electricity to the ground. High-frequency multiple discharge is realized, and the possibility of electrostatic breakdown of the pressure-sensitive element is effectively prevented.
An embodiment of the present invention further provides a touch display device, as shown in fig. 10, and fig. 10 is a schematic view of the touch display device according to the embodiment of the present invention. The display device shown in fig. 10 includes the touch display panel in any of the embodiments described above.
The specific structure and principle of the touch display panel have been described in the above embodiments, and are not described herein again. The display panel may be a liquid crystal display panel, an organic light emitting display panel, or a micro light emitting diode display panel.
For example, the display panel is a liquid crystal display panel, the liquid crystal display panel includes an array substrate and a color film substrate which are oppositely arranged, and a liquid crystal layer is arranged between the array substrate and the color film substrate. The array substrate is provided with a plurality of grid lines and a plurality of data lines, the grid lines and the data lines are crossed to define a plurality of sub-pixels, each sub-pixel is correspondingly provided with a pixel electrode and a thin film transistor, the grid electrode of the thin film transistor is connected with the corresponding grid line, the drain electrode of the thin film transistor is connected with the corresponding pixel electrode, the source electrode of the thin film transistor is connected with the corresponding data line, the data line is used for transmitting data signals, the grid line is used for transmitting scanning signals, in the working process of the liquid crystal display panel, the thin film transistors corresponding to the grid lines are sequentially conducted in a row unit under the control of the scanning signals, meanwhile, the data lines sequentially transmit the data signals to the corresponding pixel electrodes so that the pixel electrodes are charged, an electric field is formed between the pixel electrodes and a common electrode to drive liquid crystal in the liquid crystal layer to deflect, so that normal display is realized, and the color film, and a plurality of color resistors arranged in the black matrix opening in an array mode, wherein the color resistors comprise a red color resistor, a green color resistor and a blue color resistor.
For example, the display panel is an Organic Light Emitting display panel, the Organic Light Emitting display panel includes an array substrate, the array substrate includes a plurality of pixel circuits, the Organic Light Emitting display panel further includes a plurality of Organic Light-Emitting diodes (OLEDs) disposed on the array substrate, an anode of each of the Organic Light-Emitting diodes is electrically connected to the pixel circuits on the array substrate, and the plurality of Light-Emitting diodes includes a Light-Emitting Diode for Emitting red Light, a Light-Emitting Diode for Emitting green Light, and a Light-Emitting Diode for Emitting blue Light. In addition, the organic light emitting display panel further includes an encapsulation layer covering the plurality of organic light emitting diodes.
For example, the display panel is a Micro Light-Emitting Diode display panel, the Micro Light-Emitting Diode display panel includes an array substrate, the array substrate includes a plurality of pixel circuits, the Micro Light-Emitting Diode display panel further includes a plurality of Micro Light-Emitting diodes (Mic-LEDs) disposed on the array substrate, an anode of each Micro Light-Emitting Diode is electrically connected to a corresponding pixel circuit on the array substrate, and the plurality of Micro Light-Emitting diodes include a Micro Light-Emitting Diode for Emitting red Light, a Micro Light-Emitting Diode for Emitting green Light, and a Micro Light-Emitting Diode for Emitting blue Light. The micro light-emitting diode can be manufactured on the growth substrate and then transferred to the array substrate in a transfer mode.
The display device may be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, or a television.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (15)
1. A touch display panel has a display area and a non-display area surrounding the display area, wherein,
the display area comprises a plurality of gate lines and a plurality of data lines, the gate lines and the data lines are crossed to define a pixel area, and a pixel electrode is arranged in the pixel area;
the pixel electrode is coupled with the data line through a first switch;
the non-display area is provided with at least one virtual data line, and the virtual data line and the gate line are crossed to define a virtual pixel area;
the virtual data line is arranged at the periphery of the data line;
the virtual data line is electrically connected with a second switch;
the non-display area is also provided with at least one pressure sensing element, and the pressure sensing element comprises a first input end, a second input end, a first output end and a second output end;
at least one of the first input, the second input, the first output, and the second output is coupled to the dummy data line;
the virtual data line is connected with a fixed low potential;
the control end of the second switches is electrically connected with the control line.
2. The touch display panel of claim 1, wherein the gate lines extend along a first direction and are arranged along a second direction; the data lines extend along the second direction and are arranged along the first direction; the dummy data line is arranged in parallel with the data line.
3. The touch display panel of claim 2, wherein the second switch is a thin film transistor switch;
at least one of the first input terminal, the second input terminal, the first output terminal and the second output terminal of the at least one voltage sensing element is electrically connected to a first terminal of the second switch, and the dummy data line is electrically connected to a second terminal of the second switch.
4. The touch display panel of claim 3, wherein at least one of the first input terminal, the second input terminal, the first output terminal and the second output terminal is coupled to the dummy data line through a plurality of second switches.
5. The touch display panel of claim 3, wherein the first input terminal, the second input terminal, the first output terminal and the second output terminal are coupled to the dummy data line through the second switch.
6. The touch display panel according to claim 5, wherein the second switches are sequentially arranged along the extending direction of the dummy data lines, the first input terminal, the second input terminal, the first output terminal and the second output terminal are connected to the second switches in a one-to-one correspondence, the second switches are the N-th to N + 3-th second switches, and N is an integer greater than or equal to 1.
7. The touch display panel of claim 2, wherein a first end of the second switch is electrically connected to at least one of the first input end, the second input end, the first output end, and the second output end, and a second end of the second switch is electrically connected to the dummy data line.
8. The touch display panel of claim 7, wherein the control line controls the second switch to be turned on during a blank period other than the display period.
9. The touch display panel of claim 1, wherein the dummy data line is at ground potential.
10. The touch display panel according to claim 1, wherein the first input terminals of all the pressure sensitive elements are electrically connected to first input traces, and the second input terminals of all the pressure sensitive elements are electrically connected to second input traces.
11. The touch display panel of claim 1, wherein the pressure-sensitive element is a wheatstone bridge pressure sensor;
the Wheatstone bridge type pressure sensor comprises a first strain pressure sensor, a second strain pressure sensor, a third strain pressure sensor and a fourth strain pressure sensor;
the first strain pressure sensor is connected in series between the first input end and the first output end, the second strain pressure sensor is connected in series between the second input end and the second output end, the third strain pressure sensor is connected in series between the second input end and the second output end, and the fourth strain pressure sensor is connected in series between the first input end and the second output end.
12. The touch display panel of claim 1, wherein the pressure sensing element is a silicon piezoresistive pressure sensor.
13. A touch display device comprising a touch display panel according to any one of claims 1 to 12.
14. An antistatic method for a touch display panel according to any one of claims 1 to 12, the display panel comprising a display phase, a pressure-sensitive phase and a blank phase, wherein,
in the blank period, the second switch is turned on, at least one of the first input terminal, the second input terminal, the first output terminal, and the second output terminal is connected to the fixed low potential, static electricity accumulated in the pressure sensitive element flows to the dummy data line, and the pressure sensitive element starts to discharge.
15. The method as claimed in claim 14, wherein the touch display panel comprises a control line, the control line is electrically connected to the control terminals of the second switches, and the control line controls all the second switches to be turned on during the blank period.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150035256A (en) * | 2013-09-27 | 2015-04-06 | 엘지디스플레이 주식회사 | Display Device Integrated With Touch Screen |
| TW201541304A (en) * | 2014-04-25 | 2015-11-01 | Innolux Corp | Touch panel and touch display device |
| CN105676499A (en) * | 2016-03-25 | 2016-06-15 | 深圳市华星光电技术有限公司 | Liquid-crystal display panel and static electricity discharging circuit thereof |
| JP2016162003A (en) * | 2015-02-26 | 2016-09-05 | アルプス電気株式会社 | Electrostatic capacity type sensor, touch panel and electronic apparatus |
| CN106325585A (en) * | 2015-07-10 | 2017-01-11 | 南京瀚宇彩欣科技有限责任公司 | ESD protection touch control structure |
| CN107315504A (en) * | 2017-06-30 | 2017-11-03 | 上海天马微电子有限公司 | Array substrate, display panel and display device |
| CN107358905A (en) * | 2017-08-30 | 2017-11-17 | 厦门天马微电子有限公司 | A kind of display panel and electronic equipment |
-
2018
- 2018-01-23 CN CN201810063599.1A patent/CN108132557B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150035256A (en) * | 2013-09-27 | 2015-04-06 | 엘지디스플레이 주식회사 | Display Device Integrated With Touch Screen |
| TW201541304A (en) * | 2014-04-25 | 2015-11-01 | Innolux Corp | Touch panel and touch display device |
| JP2016162003A (en) * | 2015-02-26 | 2016-09-05 | アルプス電気株式会社 | Electrostatic capacity type sensor, touch panel and electronic apparatus |
| CN106325585A (en) * | 2015-07-10 | 2017-01-11 | 南京瀚宇彩欣科技有限责任公司 | ESD protection touch control structure |
| CN105676499A (en) * | 2016-03-25 | 2016-06-15 | 深圳市华星光电技术有限公司 | Liquid-crystal display panel and static electricity discharging circuit thereof |
| CN107315504A (en) * | 2017-06-30 | 2017-11-03 | 上海天马微电子有限公司 | Array substrate, display panel and display device |
| CN107358905A (en) * | 2017-08-30 | 2017-11-17 | 厦门天马微电子有限公司 | A kind of display panel and electronic equipment |
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|---|---|
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