CN105912180A - Touch panel, touch liquid crystal screen and driving method of touch panel - Google Patents
Touch panel, touch liquid crystal screen and driving method of touch panel Download PDFInfo
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- CN105912180A CN105912180A CN201610270895.XA CN201610270895A CN105912180A CN 105912180 A CN105912180 A CN 105912180A CN 201610270895 A CN201610270895 A CN 201610270895A CN 105912180 A CN105912180 A CN 105912180A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 84
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Position Input By Displaying (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a touch panel, a touch liquid crystal screen and a driving method of the touch panel, and belongs to the technical field of touch. The touch panel comprises a substrate and a touch electrode arranged on the substrate, wherein the touch electrode comprises a first electrode and a second electrode; the touch panel also comprises a switching unit; the touch electrode and a touch sensing circuit are disconnected in a heating stage; the first electrode, the second electrode and a power supply are controlled to form a conducted loop; the first electrode and the second electrode are used for heating to realize a heating function; in a touch stage, the touch electrode and the power supply are disconnected so as to disconnect the first electrode from the second electrode; and in addition, the touch electrode and the touch sensing circuit are connected again so as to stop heating to realize a touch function. Therefore, the own touch electrode structure of the touch panel can be adopted to realize self heating at a low temperature, and influence on the normal work of the touch panel at the low temperature can be avoided.
Description
Technical field
The present invention relates to technical field of touch control, particularly to a kind of contact panel, touch liquid crystal screen and touch surface
The driving method of plate.
Background technology
Contact panel is the direct embodiment of touch technology, for people provide one simply, man-machine friendship
Mode, greatly facilitates the operation of various electronic product mutually.
Existing contact panel is mainly capacitive contact panel, and capacitive contact panel generally includes many
Individual spaced touch electrode, between these touch electrode and ground or between touch electrode and touch electrode
Electric capacity can be formed, between electric capacity or touch electrode and the touch electrode between detection touch electrode and ground
Capacitance variations, determines the position of contact panel upper contact.Owing to the size of electric capacity is relevant with temperature, therefore
The normal work of contact panel can be had undesirable effect by the change of temperature, such as, when ambient temperature is too low,
The sensitivity of contact panel can be affected, in fact it could happen that contact panel has been carried out operation and contact panel does not has
Respond or contact panel is not operated the situation but occurring in that response.
The method of the problems such as the sensitivity of touch panel variation that solution causes due to low temperature at present is additionally to arrange
Contact panel, for the zone of heating of heating, is heated by zone of heating, makes temperature improve by one layer.This
Although method can solve problem above, however it is necessary that and arrange special zone of heating, this can increase touch-control undoubtedly
The thickness of panel.
Summary of the invention
Harmful effect that is too low in order to solve ambient temperature, that cause contact panel, the embodiment of the present invention provides
A kind of contact panel, touch liquid crystal screen and the driving method of contact panel.Described technical scheme is as follows:
On the one hand, embodiments providing a kind of contact panel, described contact panel includes substrate and sets
Putting multiple touch electrodes on the substrate, described touch electrode includes multiple first electrode and multiple second
Electrode, described first electrode is arranged with described second electrode mutually insulated,
Described contact panel also includes the switch element arranged on the substrate, and described switch element is used for
Heating period connects described first electrode, described second electrode and power supply, so that described first electrode, described
Second electrode and described power supply form the loop of conducting, and disconnect described touch electrode and touch control sensing circuit
Connect；
Described switch element is additionally operable to the connection at described first electrode of touch-control stage disconnection with described second electrode,
Disconnect the connection of described first electrode and described power supply, disconnect the connection of described second electrode and described power supply,
And connect described touch electrode and described touch control sensing circuit.
Preferably, described switch element includes:
First gate-controlled switch, is used for controlling described first electrode and is connected with described second electrode or disconnects；
Second gate-controlled switch, is connected for controlling described first electrode with a pole of described power supply or disconnects, with
And control described second electrode and be connected with another pole of described power supply or disconnect；
3rd gate-controlled switch, is used for controlling described touch electrode and is connected with described touch control sensing circuit or disconnects.
Alternatively, described first gate-controlled switch, described second gate-controlled switch and described 3rd gate-controlled switch are
Thin film transistor (TFT).
Alternatively, described first electrode and described second electrode are arranged in parallel, and described first electrode includes
Along multiple first sub-electrodes of described first electrode gap arrangement, at least one institute of each described first electrode
State the first sub-electrode to be connected by described first gate-controlled switch with the second electrode described in adjacent.
Alternatively, described first electrode and described second electrode are arranged in parallel, and described first electrode includes
Along multiple first sub-electrodes of described first electrode gap arrangement, described switch element also includes that the 4th controlled opens
Close, by described 4th gate-controlled switch between the first sub-electrode described in adjacent two in same described first electrode
Connect.
Preferably, intersect between described first electrode and described second electrode setting, each intersects
Described first electrode and described second electrode between connected by the first gate-controlled switch described in.
Alternatively, described contact panel also includes that temperature detecting unit, described temperature detecting unit are used for detecting
The temperature of described contact panel, described first gate-controlled switch and described second gate-controlled switch are in described temperature detection
The described temperature that unit detects is less than conducting during setting value, and described 3rd gate-controlled switch is in described temperature detection
The described temperature that unit detects disconnects less than during described setting value.
Further, described contact panel also includes clock signal generating unit, and described clock signal occurs single
Unit periodically carries out described heating period and the action in described touch-control stage for controlling described switch element.
Further, described switch element includes:
First gate-controlled switch, is used for controlling described first electrode and is connected with described second electrode or disconnects；
Second gate-controlled switch, is connected for controlling described first electrode with a pole of described power supply or disconnects, with
And control described second electrode and be connected with another pole of described power supply or disconnect；
3rd gate-controlled switch, is used for controlling described touch electrode and is connected with described touch control sensing circuit or disconnects,
Described clock signal generating unit includes pulse signal generator and phase inverter, and described clock signal occurs
The signal output part of device respectively with the signal input part of described phase inverter, the control end of described first gate-controlled switch
Connect with the control end of described second gate-controlled switch, the control end of described 3rd gate-controlled switch and described phase inverter
Signal output part connect.
On the other hand, the embodiment of the present invention additionally provides the driving method of a kind of contact panel, described driving side
Method includes:
In the heating period, control the first electrode, the second electrode and power supply and form the loop of conducting, and control to touch
Touch electrode to disconnect with touch control sensing circuit；
In the touch-control stage, control described first electrode and disconnect with described second electrode, described first electrode and institute
Stating power supply to disconnect, described second electrode disconnects with described power supply, and controls described touch electrode and described touch-control
Sensing circuit turns on.
Further, described driving method includes periodically performing described heating period and described touch-control stage
Action, each cycle is made up of a described heating period and one the described touch-control stage.
Preferably, described periodicity performs described heating period and the action in described touch-control stage, including:
The temperature of monitoring contact panel；
When described temperature is less than setting value, periodically it is alternately performed described heating period and described touch-control stage
Action.
Alternatively, described driving method, including:
The temperature of monitoring contact panel；
When described temperature is less than setting value, perform the action of described heating period, and when described temperature rises
During to described setting value, perform the action in touch-control stage.
Another further aspect, the embodiment of the present invention additionally provides a kind of touch liquid crystal screen, and described touch liquid crystal screen is arranged
There is any one contact panel aforementioned.
The technical scheme that the embodiment of the present invention provides has the benefit that to disconnect in the heating period and touches electricity
Pole and touch control sensing circuit, and control the first electrode, the second electrode and the loop of power supply formation conducting, profit
Generate heat with the first electrode and the second electrode, it is achieved heating function, and disconnect touch electrode and electricity in the touch-control stage
The connection in source, disconnects the first electrode and the connection of the second electrode, and reconnects touch electrode and touch-control sense
Slowdown monitoring circuit, thus stop heating, it is achieved touch controllable function.And then the touch electricity of contact panel self can be used
Electrode structure realizes the self-heating when low temperature, it is to avoid the normal work of contact panel is impacted by low temperature.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit connection structure schematic diagram of a kind of contact panel that the embodiment of the present invention provides；
Fig. 2 is the circuit connection diagram of a kind of contact panel that the embodiment of the present invention provides；
Fig. 3 is the circuit connection diagram of the another kind of contact panel that the embodiment of the present invention provides；
Fig. 4 is a kind of clock signal figure that the embodiment of the present invention provides；
Fig. 5 is the circuit connection diagram of the another kind of contact panel that the embodiment of the present invention provides；
Fig. 6 is the another kind of clock signal figure that the embodiment of the present invention provides；
Fig. 7 is the flow chart of a kind of driving method of the contact panel that the embodiment of the present invention provides；
Fig. 8 is the flow chart of the another kind of driving method of the contact panel that the embodiment of the present invention provides；
Fig. 9 is the flow chart of the another kind of driving method of the contact panel that the embodiment of the present invention provides；
Figure 10 is the structure chart of a kind of touch liquid crystal screen that the embodiment of the present invention provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Embodiments providing a kind of contact panel, this contact panel includes substrate and is arranged on substrate
Multiple touch electrodes 110, touch electrode 110 includes multiple first electrode 111 and multiple second electrode 112,
First electrode 111 and the second electrode 112 mutually insulated are arranged, and Fig. 1 is that the one that the embodiment of the present invention provides is touched
The electric connection structure schematic diagram of control panel, as it is shown in figure 1, this contact panel also includes being arranged on substrate
Switch element 130, switch element 130 respectively with touch electrode 110, power supply 140 and touch control sensing circuit 120
Connect.
Switch element 130 is used for connecting first electrode the 111, second electrode 112 and power supply 140 in the heating period,
So that first electrode the 111, second electrode 112 and power supply 140 form the loop of conducting, and disconnect touch electrode
110 with the connection of touch control sensing circuit 120；Switch element 130 is additionally operable to disconnect the first electrode in the touch-control stage
111 and second connection of electrode 112, disconnect the connection of the first electrode 111 and power supply 140, disconnect the second electricity
Pole 112 and the connection of power supply 140, and connect touch electrode 110 and touch control sensing circuit 120.
The embodiment of the present invention is by disconnecting touch electrode and touch control sensing circuit in the heating period, and controls the
One electrode, the second electrode form, with power supply, the loop turned on, and utilize the first electrode and the heating of the second electrode,
Realize heating function, and disconnect touch electrode and the connection of power supply in the touch-control stage, disconnect the first electrode and the
The connection of two electrodes, and reconnect touch electrode and touch control sensing circuit, thus stop heating, it is achieved
Touch controllable function.And then the touch electrode structure of contact panel self can be used to realize the self-heating when low temperature,
Avoid low temperature that the normal work of contact panel is impacted.
It should be noted that touch control sensing circuit 120 is used in the touch-control stage to the first electrode and the second electrode
Load to touch and drive signal, detect between the first electrode 111 and the second electrode 112 or touch electrode 110 and ground
Between capacitance variations, and judge the coordinate of user touch position with this.
Additionally, contact panel can also include cover plate, cover plate is oppositely arranged with substrate, and touch electrode 110
Being folded between cover plate and substrate, cover plate can reduce the thermal loss on touch electrode 110, and then permissible
Reduce the time of heating.
Alternatively, the loop of the conducting that first electrode the 111, second electrode 112 is formed with power supply 140 can be wrapped
Include series circuit, multiple touch electrode 110 parallel connection formed in parallel that the series connection of multiple touch electrode 110 is formed
In circuit or partial touch electrode 110 part in series touch electrode 110 series and parallel circuit formed in parallel one
Kind, by touch electrode 110 is connected in different ways, so that constitute loop with power supply 140
The resistance of all-in resistance of all touch electrodes 110 also differ, such that it is able in the voltage phase of power supply 140
In the case of Tong so that the heating power of touch electrode 110 is different, can adopt for different contact panels
With different loops, so that the heating power of touch electrode 110 and actual contact panel and contactor control device
Adapt.
Additionally, in the present embodiment, power supply 140 can be DC source, in other embodiments power supply 140
It can also be alternating current power supply.
There are each parts of the contact panel of foregoing circuit attachment structure below in conjunction with Fig. 2, Fig. 3 and Fig. 5 explanation
Concrete annexation.
Fig. 2 is the circuit connection diagram of a kind of contact panel that the embodiment of the present invention provides, as in figure 2 it is shown,
Touch electrode 210 includes the first electrode 211 and the second electrode 212, the first electrode 211 and the second electrode 212
Arranged in parallel, the first electrode 211 includes along the first spaced multiple first sub-electrodes of electrode 211
211a.Switch element includes:
First gate-controlled switch 231, is connected between adjacent the first electrode 211 and the second electrode 212, is used for
Control the first electrode 211 be connected with the second electrode 212 or disconnect；
Second gate-controlled switch 232, is connected between touch electrode 210 and power supply 240, for controlling the first electricity
Pole 211 is connected with a pole of power supply 240 or disconnects, and controls the another of the second electrode 212 and power supply 240
One pole connects or disconnects；
3rd gate-controlled switch 233, is connected between touch electrode 210 and touch control sensing circuit 220, is used for controlling
Touch electrode 210 processed is connected with touch control sensing circuit 220 or disconnects.
First gate-controlled switch the 231, second gate-controlled switch 232 and the 3rd gate-controlled switch 233 are respectively according to receiving
Signal individually carry out action, control mode is simple.
Further, as in figure 2 it is shown, at least one first sub-electrode 211a of each first electrode 211 with
One second adjacent electrode 212 is connected by the first gate-controlled switch 231, will by the first gate-controlled switch 231
Two adjacent touch electrodes 210 connect, and due to each first son electricity of the contact panel shown in Fig. 2
Pole 211a is only connected with first gate-controlled switch 231, can thus be achieved that with the fewest first controlled
The purpose that all touch electrodes 210 are all connected by switch 231 with power supply 240, thus reduce cost of manufacture,
All of touch electrode 210 is all connected with power supply 240 simultaneously, it is possible to use in contact panel all touch
Touch electrode 210 to heat, increase heating surface (area) (HS so that heating is evenly.
In another embodiment of the invention, the first gate-controlled switch 231 and the second gate-controlled switch 232 are respectively
It is arranged on the two ends of the second electrode 212, and each second electrode 212 passes through the first gate-controlled switch 231 with right
In the first electrode 211 answered, a first sub-electrode 211a of correspondence position connects, so that the
When one gate-controlled switch 231 and the second gate-controlled switch 232 are in the conduction state, by first electrode the 211, second electricity
Electric current in the loop that pole 212 and power supply 240 are constituted can flow through the second electrode 212 of whole piece so that whole
Second electrode 212 can be carried out heating, due to the first electrode 211 and the second electrode 212 in contact panel
Quantity a lot, and the distance between adjacent the first electrode 211 and the second electrode 212 is the least, therefore may be used
Only whole contact panel is heated by the second electrode 212.
When realizing, first gate-controlled switch the 231, second gate-controlled switch 232 and the 3rd gate-controlled switch 233 can be equal
For thin film transistor (TFT), thin film transistor (TFT) has the advantages that volume is little, and selecting thin film transistor (TFT) to make control switch can
To reduce the impact of the thickness on contact panel, thin film transistor (TFT) fast response time simultaneously, accelerate gate-controlled switch
Response speed.
Fig. 3 is the circuit connection diagram of the another kind of contact panel that the embodiment of the present invention provides, shown in Fig. 3
Contact panel in the first electrode 211 and the conducting loop that constitutes of the second electrode 212 and power supply 240 be string
Connection circuit, specifically, the first electrode 211 and the second electrode 212 are arranged in parallel, the first electrode 211
Including along the first spaced multiple first sub-electrode 211a of electrode 211, switch element also includes that the 4th can
Control switch 234, controlled by the 4th between the adjacent two first sub-electrode 211a in same first electrode 211
Switch 234 connection, the 4th gate-controlled switch 234 is for controlling the connection between adjacent two first sub-electrode 211a
Or disconnect, each first electrode 211 is with one second adjacent electrode 212 by the first gate-controlled switch 231 even
Connect, and each touch electrode 210 is only connected with first gate-controlled switch 231.
Preferably, contact panel also includes temperature detecting unit (not shown), and temperature detecting unit is used for detecting
The temperature of contact panel, the first gate-controlled switch 231 and the second gate-controlled switch 232 detect at temperature detecting unit
The temperature arrived is less than conducting, the temperature that the 3rd gate-controlled switch 233 detects at temperature detecting unit during setting value
Disconnect less than during setting value, by temperature detecting unit, contact panel is carried out temperature detection, be less than in temperature
Just heat during setting value, it is possible to reduce heat time heating time, save the energy.
Alternatively, temperature detecting unit can be but not limited to temperature sensor.
Additionally, contact panel also includes that clock signal generating unit 250, clock signal generating unit 250 are used for
Control switch element and periodically carry out heating period and the action in touch-control stage, occurred by clock signal single
Unit 250 produces periodic control signal, and then it is controlled periodically to control the first gate-controlled switch 231, second
Switch 232 and the 3rd gate-controlled switch 233, thus the heating of property performance period, make the temperature stabilization of contact panel
Be maintained within a certain range, further, it is also possible to the frequency heated by change or each time heating continued
Time change temperature range to be maintained, to adapt to different needs.
Specifically, clock signal generating unit 250 includes pulse signal generator 251 and phase inverter 252, time
The signal output part of sequential signal generator 251 is connected with signal input part and the switch element of phase inverter 252,
The signal output part of phase inverter 252 is connected with switch element, and phase inverter 252 is for by pulse signal generator
251 high level signals produced are converted to low level signal, the low level produced by pulse signal generator 251
Signal is converted to high level signal, and specifically, the control end of the first gate-controlled switch 231 occurs with clock signal
The signal output part of device 251 connects, the control end of the second gate-controlled switch 232 and pulse signal generator 251
Signal output part connect, the signal output part controlling end and phase inverter 252 of the 3rd gate-controlled switch 233 is even
Connecing, the signal output part of pulse signal generator 251 can also be connected with the 4th gate-controlled switch 234.
Fig. 4 is a kind of clock signal figure that the embodiment of the present invention provides, and as shown in Figure 4, H represents by sequential
The clock signal that signal generator 251 produces, M1、M2Represent respectively is in first electrode 211
The adjacent signal on two the first sub-electrode 211a, N1That represent is adjacent with this first electrode 211
Signal on bar the second electrode 212, for purposes of illustration only, illustrate only the touch surface shown in Fig. 2 in Fig. 4
Signal on one the first electrode 211 of plate and second electrode 212.As a example by a cycle, sequential
Signal generator 251 is at T1Persistently producing high level signal in time period, high level signal is sent to first
The control end of gate-controlled switch 231 and the control end of the second gate-controlled switch 232 so that the first gate-controlled switch 231
Tending to remain on the second gate-controlled switch 232, high level signal becomes low electricity via phase inverter 252 simultaneously
Ordinary mail number so that the 3rd gate-controlled switch 233 remains off, and now contact panel is in the heating period,
Signal corresponding on touch electrode 210 is the electric current for heating that power supply 240 produces；Clock signal occurs
Device 251 is at T2Low level signal is persistently produced so that the first gate-controlled switch 231 and second is controlled in time period
Switch 232 remains off, and low level signal becomes high level signal via phase inverter 252 simultaneously, makes
Obtaining the 3rd gate-controlled switch 233 to tend to remain on, now contact panel is in touch-control stage, touch-control sensing electricity
Road 220 is load driver signal on a first sub-electrode 211a, and the second electrode 212 produces the sense of correspondence
Induction signal, touch control sensing circuit 220 load driver signal on another first sub-electrode 211a again, second
The induced signal of correspondence, the most successively owning in same the first electrode 211 is produced again on electrode 212
Load driver signal on first sub-electrode 211a.
It should be noted that each two touch electrode 210 is one group by the circuit shown in Fig. 3 is serially connected in power supply
240 two ends, in other embodiments, it is also possible to single touch electrode 210 is one group or more touches
Electrode 210 is one group and is serially connected in power supply 240 two ends, and the quantity of each group of touch electrode 210 can be equal,
Can also be unequal, the present invention is not limited thereto.
Additionally, for convenience of description, in Fig. 2 and Fig. 3, the first electrode 211 of display all merely illustrates two
First sub-electrode 211a.
Fig. 5 is the circuit diagram of the another kind of contact panel that the embodiment of the present invention provides, as it is shown in figure 5, touch
Electrode 310 includes the first electrode 311 and the second electrode 312, between the first electrode 311 and the second electrode 312
Intersect setting.
First gate-controlled switch 331, is connected between cross one another first electrode 311 and the second electrode 312,
It is connected for controlling the first electrode 311 with the second electrode 312 or disconnects；
Second gate-controlled switch 332, is connected between touch electrode 310 and power supply 340, for controlling the first electricity
Pole 311 is connected with a pole of power supply 340 or disconnects, and controls the another of the second electrode 312 and power supply 340
One pole connects or disconnects；
3rd gate-controlled switch 333, is connected between touch electrode 310 and touch control sensing circuit 320, is used for controlling
Touch electrode 310 processed is connected with touch control sensing circuit 320 or disconnects.
First gate-controlled switch the 331, second gate-controlled switch 332 and the 3rd gate-controlled switch 333 are respectively according to receiving
Signal individually carry out action, control mode is simple.
Further, as it is shown in figure 5, each cross one another first electrode 311 and the second electrode 312 it
Between connected, due to each cross one another first electrode 311 and second by one first gate-controlled switch 331
All pass through the first gate-controlled switch 331 between electrode 312 to connect, such that it is able to by all of touch electrode 310
All it is connected with power supply 340, increases heating surface (area) (HS so that heating is evenly.
It should be noted that the circuit shown in Fig. 5 is by each of the first electrode 311 and the second electrode 312
Infall all passes through one first gate-controlled switch 331 and connects, so that the first gate-controlled switch 331 He
When second gate-controlled switch 332 is in the conduction state, by the first electrode the 311, second electrode 312 and power supply 340
Electric current in the loop constituted can flow through the first electrode 311 and the second electrode 312 of whole piece so that whole tactile
Touch electrode 310 and can be carried out heating, in other embodiments, it is also possible to only at the first electrode 311 and the
First gate-controlled switch 331 is set at the partial intersection of two electrodes 312, such as, by multiple first gate-controlled switches
331 make outermost first electrode 311 be connected with all of second electrode 312, and the present invention is not with this
It is limited.
It should be noted that owing in contact panel, the quantity of the first electrode 311 and the second electrode 312 is the most very
Many and adjacent distances between the distance between the first electrode 311 and the second adjacent electrode 312 are the most very
Little, therefore only the first gate-controlled switch 331 is set at the partial intersection of the first electrode 311 and the second electrode 312,
Still whole contact panel can be heated.
Fig. 6 be the embodiment of the present invention provide another kind of clock signal figure, as shown in Figure 6, H represent by time
The clock signal that sequential signal generator 351 produces, X1、X2、X3、X4Represent is the first electrode 311
On signal, Y1、Y2、Y3、Y4Represent is the signal on the second electrode 312, for purposes of illustration only, figure
The signal on the touch electrode 310 shown in Fig. 5 is illustrate only in 6.As a example by a cycle, clock signal
Generator 351 is at T1Persistently producing high level signal in time period, it is controlled that high level signal is sent to first
Switch 331 control end and the control end of the second gate-controlled switch 332 so that the first gate-controlled switch 331 and the
Two gate-controlled switches 332 tend to remain on, and high level signal becomes low level letter via phase inverter 352 simultaneously
Number so that the 3rd gate-controlled switch 333 remains off, and now contact panel is in the heating period, touches
Signal corresponding on electrode 310 is the electric current for heating that power supply 340 produces；Pulse signal generator 351
At T2Low level signal is persistently produced so that the first gate-controlled switch 331 and the second gate-controlled switch 332 in time period
Remaining off, low level signal becomes high level signal via phase inverter 352 simultaneously so that the 3rd can
Control switch 333 tends to remain on, and now contact panel is in the touch-control stage, touch control sensing circuit 320 to
Article one, load driver signal on the first electrode 311, all of second electrode 312 produces the sensing letter of correspondence
Number, touch control sensing circuit 320 load driver signal on Article 2 the first electrode 311 again, all of second
Produce the induced signal of correspondence on electrode 312 again, load on all of first electrode 211 the most successively and drive
Dynamic signal.Additionally, pulse signal generator 351 can produce high level under the control of temperature detecting unit
Signal and low level signal, such as when the temperature that temperature detecting unit detects is less than the setting value of temperature,
Temperature detecting unit controls pulse signal generator 351 and produces high level signal, detects at temperature detecting unit
When the temperature arrived is more than or equal to the setting value of temperature, temperature detecting unit controls pulse signal generator 351 and produces
Raw low level signal.
Additionally, the setting value of the temperature of contact panel by being artificially set, and can be added by adjustment
The frequency of heat and/or single heating period duration, can reach different heats.
Fig. 7 is the flow chart of a kind of driving method of the contact panel that the embodiment of the present invention provides, this driving side
Method is used for controlling any one contact panel aforementioned, as it is shown in fig. 7, this driving method includes:
S11: in the heating period, controls the first electrode, the second electrode and power supply and forms the loop of conducting, and control
Touch electrode processed disconnects with touch control sensing circuit；
S12: in the touch-control stage, controls the first electrode and the second electrode disconnects, and the first electrode disconnects with power supply,
Second electrode disconnects with power supply, and controls touch electrode and touch control sensing circuit conducting.
The embodiment of the present invention is by disconnecting touch electrode and touch control sensing circuit in the heating period, and controls the
One electrode, the second electrode form, with power supply, the loop turned on, and utilize the first electrode and the heating of the second electrode,
Realize heating function, and disconnect touch electrode and the connection of power supply in the touch-control stage, disconnect the first electrode and the
The connection of two electrodes, and reconnect touch electrode and touch control sensing circuit, thus stop heating, it is achieved
Touch controllable function.And then the touch electrode structure of contact panel self can be used to realize the self-heating when low temperature,
Avoid low temperature that the normal work of contact panel is impacted.
In one implementation, this driving method can include periodically performing heating period and touch-control stage
Action, each cycle is made up of a heating period and a touch-control stage, is occurred single by clock signal
Unit produces periodic control signal so that can periodically control the first gate-controlled switch, second controlled open
Close and the 3rd gate-controlled switch, thus the heating of property performance period, make the maintaining of temperature stabilization of contact panel
In the range of one, furthermore, it is possible to the frequency heated by change or the most heating and continuous time are changed
Become temperature range to be maintained, to adapt to different needs, simultaneously because heating period and touch-control stage hand over
For carrying out, do not interfere with the realization of contact panel touch controllable function.In another kind of implementation, it is also possible to first
Continuously carry out the action of heating period, the temperature of contact panel is heated to setting value, then performs the touch-control stage
Action.
Fig. 8 is the flow chart of the another kind of driving method of the contact panel that the embodiment of the present invention provides, this driving
Method is used for controlling any one contact panel aforementioned, and as shown in Figure 8, this driving method includes:
S21: the temperature of monitoring contact panel；
S22: when temperature is less than setting value, be periodically alternately performed S23 and S24；Otherwise perform S24；
S23: control the first electrode, the second electrode and power supply form the loop of conducting, and control touch electrode with
Touch control sensing circuit disconnects；
Specifically, pulse signal generator produces high level signal and that high level signal is sent to first is controlled
Switch and the second gate-controlled switch so that the first gate-controlled switch and the conducting of the second gate-controlled switch, so that first
Electrode, the second electrode form the loop of conducting with power supply, and high level signal is also delivered to phase inverter simultaneously,
Phase inverter produces low level signal, and low level signal is sent to the 3rd gate-controlled switch, the 3rd gate-controlled switch
Disconnect the connection of touch electrode and touch control sensing circuit.
S24: controlling the first electrode and the second electrode disconnects, the first electrode disconnects with power supply, the second electrode and electricity
Source disconnects, and controls touch electrode and touch control sensing circuit conducting.
Specifically, pulse signal generator produces low level signal and that low level signal is sent to first is controlled
Switch and the second gate-controlled switch so that the first gate-controlled switch and the second gate-controlled switch turn off, so that first
Electrode and the second electrode disconnect, and touch electrode disconnects with power supply, and low level signal is also delivered to anti-phase simultaneously
Device, phase inverter produces high level signal, and high level signal is sent to the 3rd gate-controlled switch, and the 3rd is controlled
Switch conduction so that touch electrode and the conducting of touch control sensing circuit.
When temperature is less than setting value, periodically it is alternately performed heating period and the action in touch-control stage, due to
In the heating process of single, the temperature of contact panel is likely not to have and rises to setting value, by the most alternately
Perform heating period and the action in touch-control stage, the temperature of contact panel can be made the most gradually to go up
Rise, and finally maintain in the range of a setting, and, use heating period and touch-control stage to replace
Form can shorten the time that single is heating and continuous, facilitates user to operate contact panel, additionally,
By at least performing a S22 at the end of each touch-control stage, so that in the temperature of contact panel
Stop after being raised to setting value heating, and, only when temperature is less than setting value, just start periodically
Be alternately performed heating period and the action in touch-control stage, it is possible to reduce the time of heating, save the energy.
It should be noted that in the time in each cycle and each cycle heating period and touch-control stage continue
The ratio of time can be manually set.
Fig. 9 is the flow chart of the another kind of driving method of the contact panel that the embodiment of the present invention provides, this driving
Method is used for controlling any one contact panel aforementioned, as it is shown in figure 9, this driving method includes:
S31: the temperature of monitoring contact panel；
S32: when temperature is less than setting value, performs S33, otherwise, performs S34；
S33: control the first electrode, the second electrode and power supply form the loop of conducting, and control touch electrode with
Touch control sensing circuit disconnects.
S34: controlling the first electrode and the second electrode disconnects, the first electrode disconnects with power supply, the second electrode and electricity
Source disconnects, and controls touch electrode and touch control sensing circuit conducting.
When temperature is less than setting value, perform the action of heating period, and when temperature rises to setting value,
Perform the action in touch-control stage, by the continuous heating of a period of time, make the temperature of contact panel rise to set
Definite value, then stop heating, operate for user, and when dropping at temperature less than setting value, again enter
Row heating, can make the temperature of contact panel maintain setting value all the time.
Additionally, by the temperature monitoring contact panel in heating process in real time, can be in the temperature of contact panel
When degree drops to less than setting value, heat at once, when the temperature of contact panel rises to setting value,
Stop heating at once.
It should be noted that the lowest temperature when setting value of temperature can normally should work more than contact panel
Angle value, wherein, contact panel normally works and refers to the minimum of problem that contact panel occurs without deterioration of sensitivity
Temperature value, owing to the temperature of contact panel after the cessation of the heating can begin to decline, by by the temperature of contact panel
Degree is heated to more than the lowest temperature angle value that can normally work so that in a period of time after the cessation of the heating,
The temperature of contact panel all can be more than this lowest temperature angle value, it is ensured that contact panel can normally work.
The embodiment of the present invention additionally provides a kind of touch liquid crystal screen, this touch liquid crystal screen be provided with aforementioned any one
Contact panel.
The embodiment of the present invention, by arranging aforesaid contact panel in touch liquid crystal screen, both can realize touching
The heating of control panel, it is also possible to by contact panel, liquid crystal is heated, it is to avoid when temperature is relatively low,
Occur that the liquid crystal response time is long, the problem that liquid crystal display screen display is abnormal, and also real owing to directly utilizing self structure
Now heat, it is not necessary to set up zone of heating, impact thus without to the thickness of touch liquid crystal screen.
Figure 10 is the structure chart of a kind of touch liquid crystal screen that the embodiment of the present invention provides, as shown in Figure 10, and should
Touch liquid crystal screen includes polaroid 1, contact panel 2, colored filter 3, liquid crystal layer 4, array base palte 5
With backlight 6, it is inclined that contact panel 2, colored filter 3, liquid crystal layer 4 and array base palte 5 are arranged at two
Between mating plate 1, wherein, two pieces of opposing parallel intervals of polaroid 1 are arranged, and two pieces of polaroids 1 are arranged on
The light emission side of backlight 6, liquid crystal layer 4 is parallel to polaroid 1 and is arranged between two polaroids 1, liquid crystal layer 4
Backlight 6 side is provided with array base palte 5, and the side of liquid crystal layer 4 backlight 6 dorsad is provided with colour
Optical filter 3, the side of colored filter 3 liquid crystal layer 4 dorsad is provided with contact panel 2.
Although it should be noted that in Figure 10 display touch liquid crystal screen be On Cell (Sensor film on cell,
Externally embedded type) structure, but in other embodiments, touch liquid crystal screen can also be GFF (Cover glass-film
Senor-film sensor, glass cover-plate-touch electrode-touch electrode) structure or other structures, the present invention is also
It is not limited.
Wherein, On Cell be a kind of contact panel is embedded between colored filter substrate and polaroid touch
Control LCD structure, GFF is that one is sequentially stacked two-layer contact panel and one layer of glass cover-plate on liquid crystal display screen
Touch liquid crystal screen structure.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (14)
1. a contact panel, described contact panel includes substrate and arranges multiple touches on the substrate
Electrode, described touch electrode includes multiple first electrode and multiple second electrode, and described first electrode is with described
Second electrode mutually insulated is arranged, it is characterised in that
Described contact panel also includes the switch element arranged on the substrate, and described switch element is used for
Heating period connects described first electrode, described second electrode and power supply, so that described first electrode, described
Second electrode and described power supply form the loop of conducting, and disconnect described touch electrode and touch control sensing circuit
Connect；
Described switch element is additionally operable to the connection at described first electrode of touch-control stage disconnection with described second electrode,
Disconnect the connection of described first electrode and described power supply, disconnect the connection of described second electrode and described power supply,
And connect described touch electrode and described touch control sensing circuit.
Contact panel the most according to claim 1, it is characterised in that described switch element includes:
First gate-controlled switch, is used for controlling described first electrode and is connected with described second electrode or disconnects；
Second gate-controlled switch, is connected for controlling described first electrode with a pole of described power supply or disconnects, with
And control described second electrode and be connected with another pole of described power supply or disconnect；
3rd gate-controlled switch, is used for controlling described touch electrode and is connected with described touch control sensing circuit or disconnects.
Contact panel the most according to claim 2, it is characterised in that described first gate-controlled switch, institute
State the second gate-controlled switch and described 3rd gate-controlled switch is thin film transistor (TFT).
Contact panel the most according to claim 2, it is characterised in that described first electrode and described
Two electrodes are arranged in parallel, and described first electrode includes multiple first along described first electrode gap arrangement
Sub-electrode, at least one described first sub-electrode of each described first electrode and the second electricity described in adjacent
Pole is connected by described first gate-controlled switch.
Contact panel the most according to claim 2, it is characterised in that described first electrode and described
Two electrodes are arranged in parallel, and described first electrode includes multiple first along described first electrode gap arrangement
Sub-electrode, described switch element also includes the 4th gate-controlled switch, adjacent two institutes in same described first electrode
State and connected by described 4th gate-controlled switch between the first sub-electrode.
Contact panel the most according to claim 2, it is characterised in that described first electrode and described
Intersect between two electrodes setting, between each cross one another described first electrode and described second electrode
Connected by the first gate-controlled switch described in.
Contact panel the most according to claim 2, it is characterised in that described contact panel also includes temperature
Degree detector unit, described temperature detecting unit is for detecting the temperature of described contact panel, described first controlled
Switch and described second gate-controlled switch are when the described temperature that described temperature detecting unit detects is less than setting value
Conducting, the described temperature that described 3rd gate-controlled switch detects at described temperature detecting unit is less than described setting
Disconnect during value.
Contact panel the most according to claim 1, it is characterised in that when described contact panel also includes
Sequential signal generating unit, described clock signal generating unit is used for controlling described switch element and periodically carries out
Described heating period and the action in described touch-control stage.
Contact panel the most according to claim 8, it is characterised in that described switch element includes:
First gate-controlled switch, is used for controlling described first electrode and is connected with described second electrode or disconnects；
Second gate-controlled switch, is connected for controlling described first electrode with a pole of described power supply or disconnects, with
And control described second electrode and be connected with another pole of described power supply or disconnect；
3rd gate-controlled switch, is used for controlling described touch electrode and is connected with described touch control sensing circuit or disconnects,
Described clock signal generating unit includes pulse signal generator and phase inverter, and described clock signal occurs
The signal output part of device respectively with the signal input part of described phase inverter, the control end of described first gate-controlled switch
Connect with the control end of described second gate-controlled switch, the control end of described 3rd gate-controlled switch and described phase inverter
Signal output part connect.
10. the driving method of a contact panel, it is characterised in that described driving method includes:
In the heating period, control the first electrode, the second electrode and power supply and form the loop of conducting, and control to touch
Touch electrode to disconnect with touch control sensing circuit；
In the touch-control stage, control described first electrode and disconnect with described second electrode, described first electrode and institute
Stating power supply to disconnect, described second electrode disconnects with described power supply, and controls described touch electrode and described touch-control
Sensing circuit turns on.
11. driving methods according to claim 10, it is characterised in that described driving method includes week
Phase property performs described heating period and the action in described touch-control stage, and each cycle is by a described heating period
Constitute with a described touch-control stage.
12. driving methods according to claim 11, it is characterised in that described periodicity performs described
Heating period and the action in described touch-control stage, including:
The temperature of monitoring contact panel；
When described temperature is less than setting value, periodically it is alternately performed described heating period and described touch-control stage
Action.
13. driving methods according to claim 10, it is characterised in that described driving method, including:
The temperature of monitoring contact panel；
When described temperature is less than setting value, perform the action of described heating period, and when described temperature rises
During to described setting value, perform the action in described touch-control stage.
14. 1 kinds of touch liquid crystal screens, it is characterised in that described touch liquid crystal screen is provided with claim 1～7
Contact panel described in any one.
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| CN201610270895.XA CN105912180B (en) | 2016-04-27 | 2016-04-27 | A kind of driving method of touch panel, touch liquid crystal screen and touch panel |
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| WO2018119960A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市汇顶科技股份有限公司 | Touch system and power supply circuit thereof |
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| CN105912180B (en) | 2018-09-04 |
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