CN103927070B - Embedded electromagnetic touch display screen and touch display device - Google Patents
Embedded electromagnetic touch display screen and touch display device Download PDFInfo
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- CN103927070B CN103927070B CN201310374553.9A CN201310374553A CN103927070B CN 103927070 B CN103927070 B CN 103927070B CN 201310374553 A CN201310374553 A CN 201310374553A CN 103927070 B CN103927070 B CN 103927070B
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- 239000000758 substrate Substances 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 18
- 230000005674 electromagnetic induction Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 5
- 230000001939 inductive effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
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Abstract
The invention discloses an embedded electromagnetic touch display screen and a touch display device, which mainly comprise: the common electrode layer on the existing display panel is split into transparent and strip-shaped common electrodes, and a plurality of strip-shaped common electrodes are electrically connected and a plurality of data lines which are distributed in a crossed manner with the common electrodes are electrically connected, so that all the strip-shaped common electrodes reach a uniform potential within the display time, the function of the common electrode layer is realized, and the aperture opening ratio of the display screen is ensured; in the touch control time, at least two public electrodes form independent first direction coils to induce electromagnetic signals, at least two data lines form independent second direction coils to induce electromagnetic signals, and induction coordinates are determined according to the induction current, so that the electromagnetic touch effect is achieved under the condition that other equipment is not additionally arranged on the display screen equipment.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of embedded electromagnetic touch display screen and touch display dress
Put.
Background technology
With developing rapidly for Display Technique, touch screen（Touch Panel）Gradually in the life of people.With
The traditional monitor for being only capable of providing display function compares, and using the display of touch screen user and display control are enabled to
Information exchange is carried out between main frame, therefore, touch-control touches screen and can completely or at least partly instead of conventional input equipment, makes
Obtaining existing display can not only show, moreover it is possible to touch control.
Common touch screen is divided into resistive touch screen, capacitive touch screen, electromagnetical type touch screen and infrared ray interrupter-type
Touch screen etc..Existing electromagnetical type touch screen, it is usually that LCD and electromagnetism input function is integrated in the display device, adopt
The mode of Modularized splice, it is assembled by LCD modules and electromagnetic screen module, for example：As shown in figure 1, in prior art
Embedded electromagnetism shows the structural representation of integrated module, and display unit had both been contained in display panels, further comprises
Electromagnetic induction unit 10, wherein, display unit contains thin film transistor (TFT) 09 and electrode member, and thin film transistor (TFT) is by a gate line
Connection grid simultaneously controls to open, and by source line source electrode is connected, the drain electrode of thin film transistor (TFT) then connection electrode element.Electromagnetic induction
Unit contains thin film transistor (TFT) and induction coil.
As can be seen here, need to increased thin film transistor (TFT) and the line of induction in viewing area in existing electromagnetical type touch screen
Circle so that the aperture opening ratio of LCD is not high.
The content of the invention
The invention provides a kind of embedded electromagnetic touch display screen and touch display unit, for solving prior art
Need to increased thin film transistor (TFT) and induction coil in viewing area in middle electromagnetical type touch screen so that the aperture opening ratio of LCD
Not high problem.
A kind of embedded electromagnetic touch display screen, it is described embedded including the first substrate and second substrate that are oppositely arranged
Electromagnetic touch display screen also includes：
It is arranged on the first substrate and towards a plurality of data lines on the side of the second substrate, wherein, at least two
Data wire described in bar is electrically connected to form first direction coil by first switch unit；
Multiple transparent, the strip public electrode of the cross-distribution that insulate with the data wire, wherein, at least two bars
Shape public electrode is electrically connected to form second direction coil；
When image shows, all strip public electrodes are applied in same common electric voltage, and the first switch unit breaks
Open so that data wire difference transmitting display signal therefor described in each bar；
During touch detection, the first switch unit turns on multiple first direction lines that a plurality of data lines is formed
Circle inductive electromagnetic signal, and faradic current is exported to determine the second direction coordinate of touch location, all strip common electricals
Pole forms the independent coil-induced electromagnetic signal of multiple second directions, and exports faradic current to determine the first party of touch location
To coordinate.
The strip public electrode is arranged on the first substrate and towards on the side of the second substrate；Or,
The strip public electrode is arranged on the second substrate and towards on the side of the first substrate.
Further define the position of strip public electrode setting.
At least two strip public electrodes are electrically connected to form second direction coil, including：
Two adjacent strip public electrodes are one group, and one end of each group of two strip public electrodes is by leading
Line is electrically connected to form second direction coil.
At least two strip public electrodes are electrically connected to form second direction coil, including：
Three adjacent strip public electrodes are one group, wherein, each group of described adjacent three strip public electrode
It is followed successively by the first strip public electrode, the second strip public electrode and Article 3 shape public electrode；
The first strip public electrode is electrically connected in first end with the Article 3 shape public electrode by wire, described
Second strip public electrode is electrically connected at the second end with the Article 3 shape public electrode by wire, to form second direction
Coil, wherein, the first end is from second end respectively positioned at the different two ends of three strip public electrodes.
At least two strip public electrodes are electrically connected to form second direction coil, including：
Three adjacent strip public electrodes are one group, wherein, each group of described adjacent three strip public electrode
It is followed successively by the first strip public electrode, the second strip public electrode and Article 3 shape public electrode；
The first strip public electrode is electrically connected in first end with the second strip public electrode by wire, described
Second strip public electrode is electrically connected in the first end with the Article 3 shape public electrode by wire, to form second party
To coil.
At least two strip public electrodes are electrically connected to form second direction coil, including：
At least two strip public electrodes of interval setting numerical value, in one end of two strip public electrodes by leading
Line is electrically connected to form second direction coil.
The mode that various strip public electrodes are electrically connected to form second direction coil is given, the flexible of technique is embodied
Property.
The embedded electromagnetic touch screen, also includes：Pixel unit array, wherein, each strip public electrode institute occupied area
Multirow or multiple row pixel cell are contained in domain.
The first switch unit contains multiple TFT and the first control line；
The embedded electromagnetic touch display screen also includes second switch unit, contains in the second switch unit many
Individual 2nd TFT, the second control line and the first detector unit, wherein：
The grid of each TFT is electrically connected with first control line, source electrode or drain electrode and at least two numbers
One end electrical connection of the data line according to line, another data line in drain electrode or source electrode and at least two data lines
One end electrical connection；
The grid of each the 2nd TFT is electrically connected with second control line, source electrode or drain electrode and corresponding one first
One end electrical connection of directional coils, drain electrode or source electrode are electrically connected with the first detector unit；
When image shows, the first switch unit disconnects and causes data wire difference transmitting display signal therefor, bag described in each bar
Include：
First control line is pressed the first voltage of setting, disconnects all TFT, and second control line is applied
Plus the second voltage of setting, disconnect all 2nd TFT so that each data wire is independently distributed, respectively transmitting display signal therefor；
During touch detection, the first switch unit turns on multiple first direction lines that a plurality of data lines is formed
Circle inductive electromagnetic signal, and faradic current is exported to determine the second direction coordinate of touch location, including：
First control line is applied in the tertiary voltage of setting, turns on all TFT so that electric by a TFT
At least two data lines of connection form independent first direction coil；
Second control line is applied in the 4th voltage of setting, and by the first direction coil of electromagnetic induction sensing is produced
Electric current, and detected to determine the second direction coordinate of output touch location by first detector unit.
The embedded electromagnetic touch display screen also includes the 3rd switch element, and the 3rd switch element contains multiple
3rd TFT, the 3rd control line and public electrode wire, wherein：
The grid of each the 3rd TFT is electrically connected with the 3rd control line, source electrode or drain electrode and corresponding one second
One end electrical connection of directional coils, drain electrode or source electrode are electrically connected with the public electrode wire；
When image shows, all strip public electrodes are applied in a common electric voltage, including：
When image shows, the 3rd control line is applied in the 5th voltage of setting, opens all of 3rd TFT, described
The common electric voltage that public electrode wire is applied in is transmitted to all strip public electrodes by the 3rd TFT for opening.
The embedded electromagnetic touch display screen also includes：Electrically connect with the source electrode of the 3rd TFT each described or drain electrode
The second detector unit；
During touch detection, all strip public electrodes form the coil-induced electromagnetism letter of independent multiple second directions
Number, and faradic current is exported to determine the first direction coordinate of touch location, specifically include：
During touch detection, the 3rd control line is applied in the 6th voltage of setting, disconnects all 3rd TFT, and each second
Directional coils are independent of one another；
Faradic current is produced by the second direction coil of electromagnetic induction, and is detected by second detector unit, with
Determine the first direction coordinate of touch location.
The embedded electromagnetic touch display screen is the one kind in LCD, OLED, Electronic Paper.
A kind of touch display unit, contains above-mentioned embedded electromagnetic touch display screen.
The present invention has the beneficial effect that：
The a plurality of data lines of with strip public electrode insulate cross-distribution of the embodiment of the present invention by arranging, and at least two
Data line is electrically connected to form first direction circle by first switch unit, and arranges transparent, strip public electrode, and
At least two bar public electrodes connect to form second direction coil, and when image shows, all strip common electricals
Pole is applied in same common electric voltage, and the first switch unit disconnects and causes data wire difference transmitting display signal therefor described in each bar,
In touch detection, all strip public electrodes form the independent coil-induced electromagnetic signal of multiple second directions, and export sense
To determine the first direction coordinate of touch location, the first switch unit turns on and a plurality of data lines is formed induced current
The coil-induced electromagnetic signal of multiple first directions, and export faradic current to determine the second direction coordinate of touch location.This
Common electrode layer on existing display floater is split into transparent, strip public electrode by sample, and by by multiple strips
Public electrode is electrically connected and will be electrically connected with a plurality of data lines of the public electrode cross-distribution so that aobvious
Show in the time, all strip public electrodes reach uniform potential, realize the function of common electrode layer, it is ensured that the opening of display screen
Rate；Within the touch-control time, at least two public electrodes form independent first direction circle inductive electromagnetic signal and at least two
Data wire forms independent second direction circle inductive electromagnetic signal, determines sensing coordinate according to faradic current so that in display screen
Equipment additionally increase other structures, do not reduce aperture opening ratio in the case of, reach the effect of electromagnetic touch.
Description of the drawings
Fig. 1 shows the structural representation of integrated module for the embedded electromagnetism of prior art；
The dimensional structure diagram of the embedded electromagnetic touch display screen that Fig. 2 is provided for the present invention；
Fig. 3（a）A kind of profile of the embedded electromagnetic touch display screen provided for the present invention；
Fig. 3（b）Another kind of profile of the embedded electromagnetic touch display screen provided for the present invention；
The first structural representation for the embedded electromagnetic touch display screen that Fig. 4 is provided for the present invention；
Second structural representation of the embedded electromagnetic touch display screen that Fig. 5 is provided for the present invention；
The third structural representation for the embedded electromagnetic touch display screen that Fig. 6 is provided for the present invention；
4th kind of structural representation of the embedded electromagnetic touch display screen that Fig. 7 is provided for the present invention；
Fig. 8 is first switch unit, the structural representation that second switch unit is connected with data wire；
Fig. 9 is the structural representation that the 3rd switch element is connected with strip public electrode.
Specific embodiment
In order to realize the purpose of the present invention, embodiments provide a kind of embedded electromagnetic touch display screen and touch
Display device is touched, a plurality of data lines of the cross-distribution that insulate with strip public electrode by arranging, and at least two data lines
First direction circle is electrically connected to form by first switch unit, and transparent, strip public electrode, and at least two are set
The bar public electrode connects to form second direction coil, and when image shows, all strip public electrodes are applied in same
Common electric voltage, the first switch unit disconnects and causes data wire difference transmitting display signal therefor described in each bar, in touch detection,
All strip public electrodes form the independent coil-induced electromagnetic signal of multiple second directions, and export faradic current with true
Determine the first direction coordinate of touch location, the first switch unit turns on multiple first that a plurality of data lines is formed
Directional coils inductive electromagnetic signal, and faradic current is exported to determine the second direction coordinate of touch location.
So the common electrode layer on existing display floater is split into into transparent, strip public electrode, and by will be many
The individual strip public electrode is electrically connected and will be electrically connected with a plurality of data lines of the public electrode cross-distribution
Connect so that within the display time, all strip public electrodes reach uniform potential, realize the function of common electrode layer, it is ensured that
The aperture opening ratio of display screen；Within the touch-control time, at least two public electrodes form independent first direction circle inductive electromagnetic signal
And at least two data lines form independent second direction circle inductive electromagnetic signal, sensing coordinate is determined according to faradic current,
So that in the case where display device does not additionally increase other structures, do not reduce aperture opening ratio, reaching the effect of electromagnetic touch.
Each embodiment of the invention is described in detail with reference to Figure of description.
Embedded electromagnetic touch display screen provided in an embodiment of the present invention includes：The first substrate 11 and second being oppositely arranged
Substrate 12, in addition, the embedded electromagnetic touch display screen also includes：
It is arranged on first substrate 11 and towards a plurality of data lines 13 on the side of second substrate 12, wherein, at least two
The data wire is electrically connected to form first direction by first switch unit 21（For example：X-direction）Coil；
Multiple transparent, the strip public electrode 14 of the cross-distribution that insulate with data wire 13, wherein, at least two strip public affairs
Common electrode 14 is electrically connected to form second direction（For example：Y-direction）Coil.
When image shows, all strip public electrodes 14 are applied in same common electric voltage, and first switch unit 21 disconnects to be made
Obtain the difference transmitting display signal therefor of pieces of data line 13.
During touch detection, first switch unit 21 turns on multiple first directions that data wire 13 is formed（X-direction）Line
Circle inductive electromagnetic signal, and faradic current is exported to determine the second direction of touch location（Y-direction）Coordinate, all strips are public
Electrode 14 forms independent multiple second directions（Y-direction）Coil-induced electromagnetic signal, and faradic current is exported to determine touch
The first direction of position（X-direction）Coordinate.
Wherein, the shape of first direction coil extends along a first direction, but multiple first direction coils are along second party
To（Y-direction）Arrangement；The shape of second direction coil extends along second direction, but multiple second direction coils are along first party
To（X-direction）Arrangement.
As shown in Fig. 2 the stereochemical structure for a kind of embedded electromagnetic touch display screen provided in an embodiment of the present invention is illustrated
Figure.
From the dimensional structure diagram shown in Fig. 2 as can be seen that strip public electrode 14 be arranged on second substrate 12,
And towards on the side of the first substrate 11.
I.e. strip public electrode and data wire are arranged on different substrate.Now, the embedded electromagnetic touch display screen
Can be TN types LCD.
In addition, strip public electrode 14 can also be arranged on first substrate 11 and towards the one of second substrate 12
On side.
I.e. strip public electrode and data wire are arranged on same substrate.Now, the built-in type touch display screen can
Being IPS or FFS types LCD, or OLED.
That is, strip public electrode 14 can be arranged on first substrate 11 and towards the side of second substrate 12
On；Or,
Strip public electrode 14 can also be arranged on second substrate 12 and both take towards on the side of first substrate 11
One, does not do here further restriction.
As one kind preferred embodiment, multirow or multiple row picture are contained in region shared by each strip public electrode 14
Plain unit.
Generally, embedded electromagnetic touch screen also includes：The multiple pixel cells 16 being arranged on first substrate 11, constitute picture
Plain cell array, data wire 13 belongs to a part for pixel cell 16.
In simple terms, the pixel unit array includes the multi-strip scanning line 15 and a plurality of data lines 13 of insulation intersection, and
It is arranged at the pixel cell 16 that adjacent scanning lines and adjacent data line are enclosed in region.
With the example shown in Fig. 2, pixel cell 16 is deployed in AA viewing areas.
It should be noted that pixel cell is the common knowledge of this area, its various different distortion goes for this
In invention.In addition, can also be comprising known in existing display screen in the embedded electromagnetic touch display screen of present invention offer
Part, such as liquid crystal layer or organic luminous layer, here is not repeated to illustrate.
For the internal structure of clearer explanation embedded electromagnetic touch display screen of the present invention, along in Fig. 2
One data line is Section line（For example：Section line BB/）, obtain Fig. 3（a）The embedded electromagnetic touch that the shown present invention is provided
A kind of profile of display screen.
Such as Fig. 3（a）It is shown, a kind of profile of the embedded electromagnetic touch display screen provided for the present invention, in Fig. 3（a）
In shown embedded electromagnetic touch display screen, strip public electrode and data wire are set on the same substrate.
Specifically, the embedded electromagnetic touch display screen includes successively from top to bottom first substrate 11, pixel cell 16, bar
Shape public electrode 14, liquid crystal layer 17, second substrate 12.
It should be noted that can also have other structures between each layer, such as insulating barrier does not draw in detail in figure；Data
Line 13 is a part for pixel unit array, and the sectional view of data wire 13 is not drawn in figure.In addition, only public with each strip in figure
Common electrode 14 is occupied as a example by two row pixel cells, but can not constitute limitation of the invention.
Such as Fig. 3（b）It is shown, another kind of profile of the embedded electromagnetic touch display screen provided for the present invention, in Fig. 3
（b）In shown embedded electromagnetic touch display screen, strip public electrode and data wire are arranged on different substrate.
Specifically, the embedded electromagnetic touch display screen includes successively from top to bottom first substrate 11, pixel cell 16, liquid
Crystal layer 17, strip public electrode 14, second substrate 12.
It should be noted that can also have other structures between each layer, such as insulating barrier does not draw in detail in figure；Data
Line 13 is a part for pixel unit array, and the sectional view of data wire 13 is not drawn in figure.In addition, only public with each strip in figure
Common electrode 14 is occupied as a example by two row pixel cells, but can not constitute limitation of the invention.
Change an angle to say, strip public electrode 14 and data wire 13 insulate cross-distribution, including：
The a plurality of strip public electrode 14 on the base station 12 of first substrate 11/ or second is arranged on along pixel cell row side
To（Y-direction）Extend, along pixel cell column direction（X-direction）Arrangement, and many datas being arranged on first substrate 11
Line 13 is along pixel cell column direction（X-direction）Extend, along pixel cell line direction（Y-direction）Arrangement.
Certainly, strip public electrode 14 and data wire 13 cross-distribution of insulation, can also include being arranged on first substrate 11/
Or second a plurality of public electrode 14 on base station 12 extend along the arrangement of pixel cell line direction, along column direction, Yi Jishe
The a plurality of data lines 13 put on first substrate 11 extends along the arrangement of pixel cell column direction, along line direction.
The implementation of the various pieces of embedded electromagnetic touch display screen is illustrated separately below.
Connect below to form the respectively in connection with explanation at least two articles strip public electrodes of description of the drawings from Fig. 4～Fig. 7
The implementation of two directional coils.
Specifically include：As shown in figure 4, the first structural representation for the embedded electromagnetic touch display screen provided for the present invention
Figure.
The as adjacent strip public electrode connects the vertical view of the built-in type touch display screen to form second direction coil
Structural representation.
Figure 4, it is seen that two adjacent strip public electrodes are one group, each group of two strip public electrodes
14 one end is electrically connected to form second direction coil by wire 18.
As shown in figure 5, second structural representation of the embedded electromagnetic touch display screen provided for the present invention.
As adjacent three strip public electrodes connect the built-in type touch display screen to form second direction coil
Overlooking the structure diagram.
From figure 5 it can be seen that three adjacent strip public electrodes are one group, wherein, each group described adjacent
Three strip public electrode is followed successively by the first strip public electrode 141, the second strip public electrode 142 and Article 3 shape common electrical
Pole 143.
The first strip public electrode 141 is with the Article 3 shape public electrode 143 in first end（Positioned at a left side for diagram
End）Electrically connected by wire 18, the second strip public electrode 142 is with the Article 3 shape public electrode 143 second
End（Positioned at the right-hand member of diagram）Electrically connected by wire 18, to form second direction coil, wherein, the first end and described
Two ends are respectively positioned at the different two ends of three strip public electrodes（The left end and right-hand member being located at respectively in figure）.
It should be noted that " first end " of strip public electrode and " the second end " refers to that strip public electrode is arranged on
After on substrate, positioned at two end points of substrate not homonymy, positioned at substrate side " first end " is referred to as, then positioned at substrate with
Be somebody's turn to do " first end " relative opposite side is referred to as " the second end ".
As shown in fig. 6, the third structural representation for the embedded electromagnetic touch display screen provided for the present invention.
As adjacent three strip public electrodes connect the built-in type touch display screen to form second direction coil
Overlooking the structure diagram.
From fig. 6 it can be seen that three adjacent strip public electrodes are one group, wherein, each group described adjacent
Three strip public electrode is followed successively by the first strip public electrode 141, the second strip public electrode 142 and Article 3 shape common electrical
Pole 143.
The first strip public electrode 141 is electrically connected in first end with the second strip public electrode 142 by wire
Connect, the second strip public electrode 142 is electrically connected in the first end with the Article 3 shape public electrode 143 by wire
Connect, to form second direction coil.
As shown in fig. 7, the 4th kind of structural representation of the embedded electromagnetic touch display screen provided for the present invention.
The as two strip public electrodes connect the vertical view of the built-in type touch display screen to form second direction coil
Structural representation.
It can be seen from figure 7 that two strip public electrodes of interval setting numerical value, in two strip public electrodes
One end electrically connected by wire 18.
It should be noted that interval setting numerical value can determine according to actual needs, can be determined according to experimental data,
Here do not limit.
With reference to Figure of description illustrate embedded electromagnetic touch display screen respectively image shows with touch detection this
The operation principle of strip public electrode and data wire in two stages.
First, introduce data wire to show and the operation principle in the two stages of touch detection in image.
Specifically, first switch unit 21 includes multiple TFT24 and the first control line 31.
Embedded electromagnetic touch display screen also includes second switch unit 22, contains in the second switch unit 22 multiple
2nd TFT25, the second control line 32 and the first detector unit 35.
Such as Fig. 8 is first switch unit, the structural representation that second switch unit is connected with data wire.
As can be seen from Figure 8, the grid of each TFT24 is electrically connected with the first control line 31, source electrode（Or leakage
Pole）Electrically connect with one end of the data line in this at least two data lines, drain（Or corresponding source electrode）With this at least two
One end electrical connection of another data line in data line.
Upper end in Fig. 8 with the source electrode of a TFT24, drain electrode in figure electrically connects respectively with two data lines, but and
Limitation of the invention is not constituted.
The grid of each the 2nd TFT25 is electrically connected with the second control line 32, source electrode（Or drain electrode）With corresponding one
One end electrical connection of two directional coils, drain electrode（Or corresponding source electrode）Electrically connect with the first detector unit 25.
Specifically, when image shows, first switch unit 21 disconnects and causes the difference transmitting display signal therefor of pieces of data line 13,
Including：
First control line 31 is pressed the first voltage of setting, disconnects all TFT24, and the second control line 32 is applied in
The second voltage of setting, disconnects all 2nd TFT25 so that each data wire 13 is independently distributed, respectively transmitting display signal therefor；
During touch detection, first switch unit 21 turns on multiple first direction coil senses that a plurality of data lines 13 is formed
Electromagnetic signal is answered, and exports faradic current to determine the second direction coordinate of touch location, including：
First control line 31 is applied in the tertiary voltage of setting, turns on all TFT24 so that electric by a TFT
At least two data 13 line of connection forms independent first direction coil；First data line and the second data from left to right
Line is electrically connected to form first first direction coil by first TFT24；Article 3 data wire and Article 4 data wire
Second first direction coil is electrically connected to form by second TFT24；...；The like.
Second control line 32 is applied in the 4th voltage of setting, and by the first direction coil of electromagnetic induction faradism is produced
Stream, and detected to determine the second direction coordinate of output touch location by first detector unit 35.
Secondly, introduce strip public electrode wire to show and the operation principle in the two stages of touch detection in image.
Embedded electromagnetic touch display screen also includes the 3rd switch element 23, and the 3rd switch element 23 contains multiple three
TFT26, the 3rd control line 33 and public electrode wire 34, embedded electromagnetic touch display screen also includes：With each described 3rd
The source electrode of TFT26（Or drain electrode）Second detector unit 36 of electrical connection, as shown in figure 9, public with strip for the 3rd switch element
The structural representation of electrode connection.
It can be seen in figure 9 that the grid of each the 3rd TFT26 is electrically connected with the 3rd control line 33, source electrode（Or
Drain electrode）Electrically connect with one end of a corresponding second direction coil, drain electrode（Or corresponding source electrode）It is electric with public electrode wire 34
Connection.
Specifically, when image shows, all strip public electrodes 14 are applied in a common electric voltage, including：
When image shows, the 3rd control line 33 is applied in the 5th voltage of setting, opens all of 3rd TFT26, public
The common electric voltage that electrode wires 34 are applied in is transmitted to all strip public electrodes 14 by the 3rd TFT26 for opening.
During touch detection, all strip public electrodes 14 form the independent coil-induced electromagnetic signal of multiple second directions,
And faradic current is exported to determine the first direction coordinate of touch location, specifically include：
During touch detection, the 3rd control line 33 is applied in the 6th voltage of setting, disconnects all 3rd TFT26, and each second
Directional coils are independent of one another；
Faradic current is produced by the second direction coil of electromagnetic induction, and is detected by the second detector unit 36, with true
Determine the first direction coordinate of touch location.
Specifically, detect that first direction coil or second direction coil can be in the following manner by the size of electric current
Realize：
For electromagnetic screen one passive electromagnetic pointer of collocation（Or time writer）, its built-in resonance circuit.Embedded electromagnetism is touched
Touch display screen and inject power into passive electromagnetic pointer by launching frequency electromagnetic waves, then returned electromagnetic signal by passive electromagnetic pointer
Embedded electromagnetic touch display screen is back to, now embedded electromagnetic touch display screen stops transmitting electromagnetic wave, and switches to reception
Mode of electromagnetic wave, when nearby there is electromagnetism pointer, embedded electromagnetic touch display screen will occur electromagnetic induction effect, now pass through
Electromagnetic induction detector unit detects faradic current, further determines that the position and pointer direction of electromagnetism pointer, you can it is determined that electricity
The direction of magnetic coil.
It should be noted that the embedded electromagnetic touch display screen according to the present invention is at least LCD, OLED, electronics
One kind in paper.
By the solution of the present invention, transparent, strip public electrode is set, and at least two bar public electrodes connect
Connect to form first direction coil, a plurality of data lines of the cross-distribution that insulate with the strip public electrode of setting, and at least two
Data line is electrically connected to form second direction circle by first switch unit, and when image shows, all strips are public
Electrode is applied in same common electric voltage, and the first switch unit disconnects and causes data wire described in each bar to transmit display letter respectively
Number, in touch detection, all strip public electrodes form the independent coil-induced electromagnetic signal of multiple first directions, and
Faradic current is exported to determine the second direction coordinate of touch location, the first switch unit is turned on and causes many datas
The coil-induced electromagnetic signal of multiple second directions that line is formed, and faradic current is exported to determine the first direction seat of touch location
Mark, so splits into transparent, strip public electrode by the common electrode layer on existing display floater, and by will it is multiple described in
Strip public electrode is electrically connected and will be electrically connected with a plurality of data lines of the public electrode cross-distribution so that
Within the display time, all strip public electrodes reach uniform potential, realize the function of common electrode layer, it is ensured that display screen
Aperture opening ratio；Within the touch-control time, at least two public electrodes form independent first direction circle inductive electromagnetic signal and at least
Two data lines form independent second direction circle inductive electromagnetic signal, determine sensing coordinate according to faradic current so that aobvious
In the case that display screen equipment does not additionally increase other equipment, the effect of electromagnetic touch is reached.
Additionally, present invention also offers a kind of structural representation of touch display unit, includes in the touch display unit
Embedded electromagnetic touch display screen.
Wherein, the embedded electromagnetic touch display screen is above-mentioned built-in type touch display screen.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (12)
1. a kind of embedded electromagnetic touch display screen, including the first substrate and second substrate that are oppositely arranged, it is characterised in that institute
Stating embedded electromagnetic touch display screen also includes：
It is arranged on the first substrate and towards a plurality of data lines on the side of the second substrate, wherein, at least two institutes
State data wire and first direction coil is electrically connected to form by first switch unit；
Multiple transparent, the strip public electrode of the cross-distribution that insulate with the data wire, wherein, at least two strips are public
Common electrode is electrically connected to form second direction coil；
When image shows, all strip public electrodes are applied in same common electric voltage, and the first switch unit disconnects to be made
Obtain data wire difference transmitting display signal therefor described in each bar；
During touch detection, the first switch unit turns on multiple first direction coil senses that a plurality of data lines is formed
Electromagnetic signal is answered, and exports faradic current to determine the second direction coordinate of touch location, all strip public electrode shapes
Into the independent coil-induced electromagnetic signal of multiple second directions, and the first direction for exporting faradic current to determine touch location is sat
Mark.
2. embedded electromagnetic touch display screen as claimed in claim 1, it is characterised in that the strip public electrode is set
In the first substrate and towards on the side of the second substrate；Or,
The strip public electrode is arranged on the second substrate and towards on the side of the first substrate.
3. embedded electromagnetic touch display screen as claimed in claim 1, it is characterised in that at least two strip common electricals
Pole is electrically connected to form second direction coil, including：
Two adjacent strip public electrodes are one group, and one end of each group of two strip public electrodes is by wire electricity
Connect to form second direction coil.
4. embedded electromagnetic touch display screen as claimed in claim 1, it is characterised in that at least two strip common electricals
Pole is electrically connected to form second direction coil, including：
Three adjacent strip public electrodes are one group, wherein, each group of described adjacent three strip public electrode is successively
For the first strip public electrode, the second strip public electrode and Article 3 shape public electrode；
The first strip public electrode is electrically connected in first end with the Article 3 shape public electrode by wire, and described second
Strip public electrode is electrically connected at the second end with the Article 3 shape public electrode by wire, to form second direction line
Circle, wherein, the first end is from second end respectively positioned at the different two ends of three strip public electrodes.
5. embedded electromagnetic touch display screen as claimed in claim 1, it is characterised in that at least two strip common electricals
Pole is electrically connected to form second direction coil, including：
Three adjacent strip public electrodes are one group, wherein, each group of described adjacent three strip public electrode is successively
For the first strip public electrode, the second strip public electrode and Article 3 shape public electrode；
The first strip public electrode is electrically connected in first end with the second strip public electrode by wire, and described second
Strip public electrode is electrically connected in the first end with the Article 3 shape public electrode by wire, to form second direction line
Circle.
6. embedded electromagnetic touch display screen as claimed in claim 1, it is characterised in that at least two strip common electricals
Pole is electrically connected to form second direction coil, including：
At least two strip public electrodes of interval setting numerical value, in one end of two strip public electrodes by wire electricity
Connect to form second direction coil.
7. the embedded electromagnetic touch display screen as described in claim 1～6 is arbitrary, it is characterised in that the embedded electromagnetism
Touch screen, also includes：Pixel unit array, wherein, multirow or multiple row picture are contained in region shared by each strip public electrode
Plain unit.
8. the embedded electromagnetic touch display screen as described in claim 1～6 is arbitrary, it is characterised in that the first switch list
Unit contains multiple TFT and the first control line；
The embedded electromagnetic touch display screen also includes second switch unit, and multiple the are contained in the second switch unit
Two TFT, the second control line and the first detector unit, wherein：
The grid of each TFT is electrically connected with first control line, source electrode or drain electrode and at least two data lines
In a data line one end electrical connection, one end electricity of another data line in drain electrode or source electrode and at least two data lines
Connection；
The grid of each the 2nd TFT is electrically connected with second control line, source electrode or drain electrode and a corresponding first direction
One end electrical connection of coil, drain electrode or source electrode are electrically connected with the first detector unit；
When image shows, the first switch unit disconnects and causes data wire difference transmitting display signal therefor described in each bar, including：
First control line is pressed the first voltage of setting, disconnects all TFT, and second control line is applied in and sets
Fixed second voltage, disconnects all 2nd TFT so that each data wire is independently distributed, respectively transmitting display signal therefor；
During touch detection, the first switch unit turns on multiple first direction coil senses that a plurality of data lines is formed
Electromagnetic signal is answered, and exports faradic current to determine the second direction coordinate of touch location, including：
First control line is applied in the tertiary voltage of setting, turns on all TFT so that electrically connected by a TFT
At least two data lines form independent first direction coil；
Second control line is applied in the 4th voltage of setting, and by the first direction coil of electromagnetic induction faradism is produced
Stream, and detected to determine the second direction coordinate of output touch location by first detector unit.
9. the embedded electromagnetic touch display screen as described in claim 1～6 is arbitrary, it is characterised in that the embedded electromagnetism
Touch display screen also includes the 3rd switch element, and the 3rd switch element contains multiple 3rd TFT, the 3rd control line and public affairs
Common-battery polar curve, wherein：
The grid of each the 3rd TFT is electrically connected with the 3rd control line, source electrode or drain electrode and a corresponding second direction
One end electrical connection of coil, drain electrode or source electrode are electrically connected with the public electrode wire；
When image shows, all strip public electrodes are applied in a common electric voltage, including：
When image shows, the 3rd control line is applied in the 5th voltage of setting, opens all of 3rd TFT, described public
The common electric voltage that electrode wires are applied in is transmitted to all strip public electrodes by the 3rd TFT for opening.
10. embedded electromagnetic touch display screen as claimed in claim 9, it is characterised in that the embedded electromagnetic touch shows
Display screen also includes：The second detector unit electrically connected with the source electrode of the 3rd TFT each described or drain electrode；
During touch detection, all strip public electrodes form the independent coil-induced electromagnetic signal of multiple second directions, and
Faradic current is exported to determine the first direction coordinate of touch location, is specifically included：
During touch detection, the 3rd control line is applied in the 6th voltage of setting, disconnects all 3rd TFT, each second direction
Coil is independent of one another；
Faradic current is produced by the second direction coil of electromagnetic induction, and is detected by second detector unit, to determine
The first direction coordinate of touch location.
11. embedded electromagnetic touch display screens as claimed in claim 1, it is characterised in that the embedded electromagnetic touch shows
Display screen is the one kind in LCD, OLED, Electronic Paper.
12. a kind of touch display units, it is characterised in that contain the embedded electromagnetism as described in claim 1～11 is arbitrary
Touch display screen.
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| CN103941952B (en) * | 2014-03-31 | 2017-03-29 | 上海天马微电子有限公司 | Electromagnetic induction type touch substrate and inductive touch 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 |
| JP6408415B2 (en) * | 2015-03-31 | 2018-10-17 | 株式会社ジャパンディスプレイ | Display device |
| CN105739806B (en) | 2016-05-06 | 2018-10-19 | 京东方科技集团股份有限公司 | Touch display panel and its driving method and display device |
| CN107316612B (en) * | 2017-07-11 | 2019-08-30 | 深圳市华星光电半导体显示技术有限公司 | A kind of OLED display panel and OLED display |
| US10522607B2 (en) | 2017-07-11 | 2019-12-31 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd | OLED display panel and OLED display apparatus |
| CN109921476B (en) * | 2017-12-12 | 2022-06-10 | 深圳富泰宏精密工业有限公司 | Wireless charging device |
| CN108762598B (en) | 2018-07-02 | 2021-08-13 | 京东方科技集团股份有限公司 | Electromagnetic touch detection method and related device |
| CN108920034B (en) * | 2018-07-27 | 2022-04-12 | 上海天马微电子有限公司 | Array substrate, touch display panel and touch display device |
| CN109933250B (en) * | 2019-03-26 | 2024-02-09 | 京东方科技集团股份有限公司 | Display module, display device and display equipment |
| CN113655920B (en) * | 2021-08-31 | 2023-10-17 | 深圳市华星光电半导体显示技术有限公司 | Touch display panel and electronic device |
| CN113687742B (en) * | 2021-09-02 | 2023-01-06 | 山东蓝贝思特教装集团股份有限公司 | Electromagnetic positioning method and system based on TFT |
| WO2023226041A1 (en) * | 2022-05-27 | 2023-11-30 | 京东方科技集团股份有限公司 | Liquid crystal handwriting tablet, handwriting apparatus and handwriting system |
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| US9064772B2 (en) * | 2005-10-07 | 2015-06-23 | Integrated Digital Technologies, Inc. | Touch screen system having dual touch sensing function |
| US7995041B2 (en) * | 2009-02-02 | 2011-08-09 | Apple Inc. | Integrated touch screen |
| CN101930134B (en) * | 2009-06-19 | 2013-08-07 | 台均科技（深圳）有限公司 | Electromagnetic induction type liquid crystal panel as well as manufacture method thereof and liquid crystal display (LCD) |
| TWI421749B (en) * | 2010-12-30 | 2014-01-01 | Au Optronics Corp | Display panel and operation method thereof |
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