CN103677475B - In-cell touch display panel and touch localization method, display device - Google Patents
In-cell touch display panel and touch localization method, display device Download PDFInfo
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- CN103677475B CN103677475B CN201310657024.XA CN201310657024A CN103677475B CN 103677475 B CN103677475 B CN 103677475B CN 201310657024 A CN201310657024 A CN 201310657024A CN 103677475 B CN103677475 B CN 103677475B
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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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- 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
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
-
- 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
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a kind of In-cell touch display panel, touch localization method and display device.Described In-cell touch display panel, including array base palte, a plurality of shielding metal wire and a plurality of data lines of mutually insulated it is provided with on described array base palte, it is characterized in that, shielding metal wire described at least one and be arranged to touch-control scan line, described at least one, data wire is arranged to touch induction lines；Described touch-control scan line is used for transmitting touch scanning signals；Described touch induction lines, for being coupled described touch scanning signals by inductance capacitance in the touch-control stage, is obtained touch sensible signal and exports；Described inductance capacitance is formed at the antarafacial intersection of described touch-control scan line and described touch induction lines.The present invention can realize embedded touch liquid crystal display in the case of not increasing mask quantity, greatly reduces the thickness of liquid crystal display, and saved cost on the basis of existing Technology.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of In-cell touch display panel and touch is fixed
Method for position, display device.
Background technology
At present, touch technology is widely used in liquid crystal display, and to make, have can simultaneously show image
And the display of input function.Existing embedded touch control liquid crystal display includes optical sensor formula liquid
Crystal display, extruding condenser type liquid crystal display, pinched resistor formula liquid crystal display etc..Optical sensor formula liquid
Crystal display needs external light source；Extruding condenser type liquid crystal display is dependent on extruding and causes thickness of liquid crystal box to become
Change, thus electric capacity changes and obtains relevant position information, but the life-span of extrusion capacitance is short；Pinched resistor
Formula relies on extruding to make upper and lower base plate conductive body contact thus produces positional information.And existing embedded touch
Display floater be touch sensing is arranged on display panels after, thus cause increasing mask quantity,
Increase cost.
Summary of the invention
Present invention is primarily targeted at a kind of In-cell touch display panel of offer and preparation method thereof, not
In the case of increasing mask quantity, it is achieved embedded touch liquid crystal display.
In order to achieve the above object, the invention provides a kind of In-cell touch display panel, including array base
Plate, described array base palte is provided with a plurality of shielding metal wire and a plurality of data lines of mutually insulated, and at least one
Shielding metal wire described in bar and be arranged to touch-control scan line, data wire described at least one is arranged to touch-control sense
Answer line,
Described touch-control scan line, for receiving touch scanning signals in the touch-control stage；
Described touch induction lines, for carrying out described touch scanning signals by inductance capacitance in the touch-control stage
Coupling, obtains touch sensible signal and exports；
Described inductance capacitance is formed at the antarafacial intersection of described touch-control scan line and described touch induction lines.
During enforcement, In-cell touch display panel of the present invention also includes: with described touch induction lines even
The touch-control sensing unit connect, for receiving the touch sensible letter of described touch induction lines output in the touch-control stage
Number, detect change and the position of described inductance capacitance of this touch sensible signal, thus obtain touch location
Information.
During enforcement, In-cell touch display panel of the present invention also includes: be arranged at described touch-control sensing
Touch switch between line and described touch-control sensing unit, for turning on described touch induction lines in the touch-control stage
And the connection between described touch-control sensing unit, disconnects described touch induction lines and described touch-control in the display stage
Connection between sensing unit.
During enforcement, described touch switch is thin film transistor (TFT).
During enforcement, In-cell touch display panel of the present invention also includes:
Drive integrated chip, for described touch induction lines loaded and displayed being driven signal in the display stage；
And, drive switch, be connected between described touch induction lines and the integrated chip of described driving, be used for
The connection between described touch induction lines and the integrated chip of described driving is disconnected, in the display stage in the touch-control stage
Turn on described touch induction lines and the connection of the integrated chip of described driving.
During enforcement, described driving switch is thin film transistor (TFT).
During enforcement, In-cell touch display panel of the present invention also includes being arranged to be touched described in adjacent two
Virtual scan line between control scan line；Described virtual scan line includes at least one shielding metal wire.
During enforcement, In-cell touch display panel of the present invention also includes being arranged to be touched described in adjacent two
The virtual line of induction between the control line of induction；The described virtual line of induction includes at least one data wire.
Present invention also offers the touch localization method of a kind of In-cell touch display panel, be applied to above-mentioned
In-cell touch display panel, including:
Touch-control scan line is loaded touch scanning signals；
The touch-control sensing signal that detection touch induction lines is coupled out by inductance capacitance, believes according to this touch-control sensing
Number change and the position of described inductance capacitance, determine touching position information.
Present invention also offers a kind of display device, including above-mentioned In-cell touch display panel.
Compared with prior art, the present invention utilizes existing shielding metal wire and data wire as touch-control scan line
And touch induction lines, embedded touch liquid crystal display can be realized in the case of not increasing mask quantity, and
And it is formed at the inductance capacitance of the antarafacial intersection of described touch-control scan line and described touch induction lines, because being not required to
Want deformation to have the advantage of length in service life, and inductance capacitance is directly arranged on array base palte, existing
Greatly reduce the thickness of liquid crystal display on the basis of having Technology, and save cost.
Accompanying drawing explanation
Fig. 1 is the part-structure figure of the In-cell touch display panel described in the embodiment of the present invention；
Fig. 2 is that the touch induction lines that the In-cell touch display panel described in the embodiment of the present invention includes is passed through
Touch switch and the schematic diagram of touch-control sensing unit；
Fig. 3 is the portion of the touch sensing of the In-cell touch display panel described in another embodiment of the present invention
Separation structure figure；
Fig. 4 is the signal timing diagram during In-cell touch display panel work described in the embodiment of the present invention；
Fig. 5 is that the array base palte of the In-cell touch display panel described in the embodiment of the present invention prepares mask exposure
Light schematic flow sheet；
Fig. 6 is the flow process of the touch localization method of the In-cell touch display panel described in the embodiment of the present invention
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
As it is shown in figure 1, the In-cell touch display panel described in the embodiment of the present invention, including array base palte (figure
Do not show in 1), described array base palte is provided with a plurality of shielding metal wire and a plurality of data lines of mutually insulated,
Shielding metal wire described at least one and be arranged to touch-control scan line Tx, data wire described at least one is set
It is set to touch induction lines Rx；
Described touch-control scan line Tx, for receiving touch scanning signals in the touch-control stage；
Described touch induction lines Rx, for passing through inductance capacitance (not showing in Fig. 1) to institute in the touch-control stage
State touch scanning signals to couple, obtain touch sensible signal and export；
Described inductance capacitance is formed at the antarafacial intersection of described touch-control scan line and described touch induction lines.
In-cell touch display panel described in the embodiment of the present invention, utilizes existing shielding metal wire and data
Line, as touch-control scan line and touch induction lines, can realize embedded in the case of not increasing mask quantity
Touch liquid crystal shows, and is formed at the described touch-control scan line antarafacial intersection with described touch induction lines
Inductance capacitance, the advantage because need not deformation with length in service life, and inductance capacitance are directly arranged at
On array base palte, on the basis of existing Technology, greatly reduce the thickness of liquid crystal display, and save
About cost.
LTPS(Low Temperature Poly-silicon, low-temperature polysilicon silicon technology) in technique for photoelectricity
Flow the impact on TFT characteristic and add Shield Metal(shielding metal) technique, the embodiment of the present invention is public
With shielding metal, touch sensing is made in TFT(Thin Film Transistor, i.e. thin film field-effect crystal
Pipe) on substrate, on the basis of not increasing cost, achieve embedded touch control.
In embodiments of the present invention, touch induction lines and the pixel shared data line on array base palte.
In the In-cell touch display panel described in the embodiment of the present invention, described touch induction lines and described drive
Dynamic shielding metal electrode is multiple, to increase touch-control sensitivity.Described touch scanning signals is integrated by touch-control
Chip provides.Further, touch-control stage and display stage use the mode that timesharing drives, and are not increasing GOA
Display signal and the interference of induced signal is reduced in the case of (array base palte row cutting) load, concrete
Display time and touch-control time can be according to the products of different resolution, according to display time and the need of touch-control time
Seek reasonable distribution.In the touch-control stage, the integrated chip of touch-control provides scanning signal respectively to each touch-control scan line,
Described touch scanning signals is coupled by the most each touch induction lines respectively by inductance capacitance, is touched
Induced signal also exports, to realize touch controllable function.In the display stage, driving integrated chip is data wire input
Normal data signal, thus ensure that In-cell touch display panel can normally show.
Before touch, between described touch-control scan line Tx and described touch induction lines Rx, it is in static equilibrium,
There is electric capacity is Co, when finger touches corresponding sensing unit, finger respectively with touch-control scan line Tx and described
Touch induction lines Rx produces coupling electric capacity so that the capacitance variations of sensing unit is (Co+ △ C), passes through
Progressive scan to touch-control scan line Tx, touch induction lines Rx output signal can quickly make a response,
I.e. can get position, corresponding touch point (i.e. the row-coordinate of touch point and row coordinate).
As in figure 2 it is shown, according to a kind of detailed description of the invention, In-cell touch display panel of the present invention
Also include:
The touch-control sensing unit 21 being connected with described touch induction lines Rx, described for receiving in the touch-control stage
The touch sensible signal of touch induction lines Rx output, detects the change of this touch sensible signal and described sense
Answer the position of electric capacity, thus obtain touching position information；
It is arranged at the touch switch 22 between described touch induction lines Rx and described touch-control sensing unit 21,
For turning on the connection between described touch induction lines Rx and described touch-control sensing unit 21 in the touch-control stage,
The connection between described touch induction lines Rx and described touch-control sensing unit 21 is disconnected in the display stage.
In the specific implementation, described touch switch 22 can be TFT(Thin Film Transistor, thin film
Field-effect transistor) switch.
In the specific implementation, the In-cell touch display panel described in the embodiment of the present invention also includes:
Drive integrated chip, for described touch induction lines loaded and displayed being driven signal in the display stage；
And, drive switch, be connected between described touch induction lines and the integrated chip of described driving, be used for
The connection between described touch induction lines and the integrated chip of described driving is disconnected, in the display stage in the touch-control stage
Turn on described touch induction lines and the connection of the integrated chip of described driving.
In the specific implementation, described driving switch can be TFT switch.In the touch-control stage, described driving
The control signal that switch and described touch switch are exported by the integrated chip of touch-control controls and turns on, in the display stage
The described control signal driving switch and described touch switch to be exported by the integrated chip of touch-control controls and turns off.
As it is shown on figure 3, the In-cell touch display panel described in the embodiment of the present invention also includes:
It is arranged at the virtual scan line Tm between touch-control scan line Tx described in adjacent two, is used for preventing phase
Signal disturbing between touch-control scan line Tx described in adjacent two；
And, it is arranged at the virtual line of induction Rm between touch induction lines Rx described in adjacent two, is used for
Prevent the signal disturbing between touch induction lines Rx described in adjacent two；
Described virtual scan line Tm includes at least one shielding metal wire (not showing in Fig. 3)；
Described virtual line of induction Rm includes at least one data wire (not showing in Fig. 3).
Fig. 4 is the timesharing driver' s timing during In-cell touch display panel work described in the embodiment of the present invention
Figure, shows that by touch screen the time of each frame is divided into display time and touch-control time, and STV signal is a frame
The initial signal of image.In the diagram, the scanning signal sent to touch-control scan line that Tx refers to, Rx refers to
Be touch induction lines output induced signal, within the display time, to every grid line Gate1 in touch screen,
Gate2 ... Gaten-1, Gaten, Gaten+1 load scanning signal (n is the integer more than 2) successively,
Data wire Data is loaded grayscale signal, normal output display signal；Within the touch-control time, data wire stops
Only output display signal, touch-control scan line output scanning signal, the corresponding output signal of touch induction lines, pass through
Detection Rx can get touch location.
As it is shown in figure 5, the array base palte of In-cell touch display panel of the present invention prepares mask exposure
Flow process is:
Shielding metal level 51-low-temperature polycrystalline silicon layer 52-grid metal level 53,57-insulating protective layer 54-source and drain gold
Belong to layer 511-resin bed 55,56-common driver electrode 512-passivation layer 58-pixel electrode 513；
Described shielding metal level 51 and described low-temperature polycrystalline silicon layer 52 are provided with cushion 59；
Described shielding metal level 51 is arranged on glass substrate 50.
In Figure 5,510 marks for Gate insulator (gate protection layer)；
Described insulating protective layer 54, is used for connecting source and drain metal level 511 and low-temperature polycrystalline silicon layer 52, simultaneously
Can reduce the electric capacity between grid metal level and source and drain metal level, the effect of described resin bed 55,56 is to make film
Layer planarization, and the electric capacity Cpd of pixel electrode and source and drain metal level can be reduced, and by via even
Connect source and drain metal level and common driver electrode；Described passivation layer 58 is used for connecting pixel electrode and common driver
Electrode.
Present invention also offers a kind of display device, including above-mentioned In-cell touch display panel.Described aobvious
Showing device can be: liquid crystal panel, Electronic Paper, oled panel, LCD TV, liquid crystal display, number
Code-phase frame, mobile phone, panel computer etc. have product or the parts of any display function.
As shown in Figure 6, the touch localization method of the In-cell touch display panel described in the embodiment of the present invention,
It is applied to above-mentioned In-cell touch display panel, including:
Step 61: touch-control scan line is loaded touch scanning signals；
Step 62: the touch-control sensing signal that detection touch induction lines is coupled out by inductance capacitance, according to this
The change of touch-control sensing signal and the position of described inductance capacitance, determine touching position information.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. an In-cell touch display panel, including array base palte, described array base palte is provided with phase
The a plurality of shielding metal wire insulated mutually and a plurality of data lines, it is characterised in that described at least one, shield metal
Line is arranged to touch-control scan line, and described at least one, data wire is arranged to touch induction lines,
Described touch-control scan line, for receiving touch scanning signals in the touch-control stage；
Described touch induction lines, for carrying out described touch scanning signals by inductance capacitance in the touch-control stage
Coupling, obtains touch sensible signal and exports；
Described inductance capacitance is formed at the antarafacial intersection of described touch-control scan line and described touch induction lines；
Described In-cell touch display panel also includes being arranged at described in adjacent two between touch-control scan line
Virtual scan line；Described virtual scan line includes at least one shielding metal wire；
Described In-cell touch display panel also includes being arranged at described in adjacent two between touch induction lines
The virtual line of induction；The described virtual line of induction includes at least one data wire.
2. In-cell touch display panel as claimed in claim 1, it is characterised in that also include: with
The touch-control sensing unit that described touch induction lines connects, defeated for receiving described touch induction lines in the touch-control stage
The touch sensible signal gone out, detects change and the position of described inductance capacitance of this touch sensible signal, from
And obtain touching position information.
3. In-cell touch display panel as claimed in claim 2, it is characterised in that also include: set
It is placed in the touch switch between described touch induction lines and described touch-control sensing unit, for leading in the touch-control stage
Logical connection between described touch induction lines and described touch-control sensing unit, disconnects described touch-control in the display stage
Connection between the line of induction and described touch-control sensing unit.
4. In-cell touch display panel as claimed in claim 3, it is characterised in that described touch-control is opened
Close as thin film transistor (TFT).
5. In-cell touch display panel as claimed in claim 1, it is characterised in that also include:
Drive integrated chip, for described touch induction lines loaded and displayed being driven signal in the display stage；
And, drive switch, be connected between described touch induction lines and the integrated chip of described driving, be used for
The connection between described touch induction lines and the integrated chip of described driving is disconnected, in the display stage in the touch-control stage
Turn on described touch induction lines and the connection of described driving integration slice.
6. In-cell touch display panel as claimed in claim 5, it is characterised in that described driving is opened
Close as thin film transistor (TFT).
7. a touch localization method for In-cell touch display panel, is applied to such as claim 1 to 6
In-cell touch display panel described in middle any claim, including:
Touch-control scan line is loaded touch scanning signals；
The touch-control sensing signal that detection touch induction lines is coupled out by inductance capacitance, believes according to this touch-control sensing
Number change and the position of described inductance capacitance, determine touching position information.
8. a display device, it is characterised in that include such as any claim in claim 1 to 6
Described In-cell touch display panel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657024.XA CN103677475B (en) | 2013-12-06 | 2013-12-06 | In-cell touch display panel and touch localization method, display device |
| PCT/CN2014/075872 WO2015081653A1 (en) | 2013-12-06 | 2014-04-22 | Embedded touch display panel, touch positioning method thereof, and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657024.XA CN103677475B (en) | 2013-12-06 | 2013-12-06 | In-cell touch display panel and touch localization method, display device |
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| CN103677475A CN103677475A (en) | 2014-03-26 |
| CN103677475B true CN103677475B (en) | 2016-09-21 |
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| CN (1) | CN103677475B (en) |
| WO (1) | WO2015081653A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677475B (en) * | 2013-12-06 | 2016-09-21 | 京东方科技集团股份有限公司 | In-cell touch display panel and touch localization method, display device |
| CN104484086B (en) * | 2014-12-12 | 2019-08-02 | 深圳市华星光电技术有限公司 | Induction touch base plate and display device |
| CN104393026A (en) * | 2014-12-12 | 2015-03-04 | 京东方科技集团股份有限公司 | OLED display substrate, manufacturing method of OLED display substrate, and display device adopting OLED display substrate |
| CN105514119A (en) * | 2016-01-04 | 2016-04-20 | 武汉华星光电技术有限公司 | TFT substrate manufacturing method and TFT substrate |
| TWI621049B (en) | 2017-06-08 | 2018-04-11 | 友達光電股份有限公司 | Touch panel |
| CN108762550B (en) | 2018-05-16 | 2021-01-15 | 京东方科技集团股份有限公司 | Touch display substrate, touch display method and touch display device |
| CN110465959A (en) * | 2019-07-12 | 2019-11-19 | 深圳市优必选科技股份有限公司 | A kind of electronic skin, robot and its tactile production method |
| CN111158054B (en) * | 2019-12-31 | 2021-04-06 | 浙江大学 | Passive object detection display system and method based on LED screen |
| CN114882829A (en) * | 2021-02-05 | 2022-08-09 | 深圳市柔宇科技股份有限公司 | Touch display screen, electronic equipment and driving method of touch display screen |
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| CN102750062A (en) * | 2012-06-29 | 2012-10-24 | 京东方科技集团股份有限公司 | Capacitive embedded touch screen and display device |
| CN102768604A (en) * | 2012-06-29 | 2012-11-07 | 京东方科技集团股份有限公司 | Capacitive embedded touch screen, as well as touch location method and display device thereof |
| CN102841718A (en) * | 2012-08-31 | 2012-12-26 | 北京京东方光电科技有限公司 | Capacitance-type embedded touch screen and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707858B (en) * | 2012-05-28 | 2015-04-29 | 北京京东方光电科技有限公司 | Touch unit, array substrate, liquid crystal vacuum align substrate and touch display |
| CN103677475B (en) * | 2013-12-06 | 2016-09-21 | 京东方科技集团股份有限公司 | In-cell touch display panel and touch localization method, display device |
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2013
- 2013-12-06 CN CN201310657024.XA patent/CN103677475B/en active Active
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2014
- 2014-04-22 WO PCT/CN2014/075872 patent/WO2015081653A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750062A (en) * | 2012-06-29 | 2012-10-24 | 京东方科技集团股份有限公司 | Capacitive embedded touch screen and display device |
| CN102768604A (en) * | 2012-06-29 | 2012-11-07 | 京东方科技集团股份有限公司 | Capacitive embedded touch screen, as well as touch location method and display device thereof |
| CN102841718A (en) * | 2012-08-31 | 2012-12-26 | 北京京东方光电科技有限公司 | Capacitance-type embedded touch screen and display device |
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| CN103677475A (en) | 2014-03-26 |
| WO2015081653A1 (en) | 2015-06-11 |
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