CN101900904A - Flat panel display with touch control function and touch control panel - Google Patents
Flat panel display with touch control function and touch control panel Download PDFInfo
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Abstract
A flat panel display with touch control function and a touch control panel are provided. The scan lines and the data lines are arranged to cross each other to divide the flat panel display into pixel regions. The sensing units are respectively arranged in the pixel regions, and each sensing unit respectively comprises a sensor and a digital logic inverter. The sensor is used for detecting whether the sensing unit is touched and generating a corresponding sensing signal. The digital logic inverter is electrically coupled to the sensor to generate an output signal according to a corresponding sensing signal, wherein the output signal includes a first potential and a second potential, and the first potential and the second potential are different and respectively represent whether the sensing unit is touched. The invention can accurately judge whether the sensing unit is touched.
Description
Technical field
The present invention relates to the touch control detection field, and be particularly related to a kind of flat-panel screens and corresponding contact panel with touch controllable function.
Background technology
Along with development of science and technology, flat-panel screens (for example, LCD) because of it has high image quality, volume is little, in light weight and advantage such as applied range, and be widely used in various consumption electronic products such as mobile phone, notebook, console indicator unit and TV, and little by little replaced traditional CRT display and become the main flow of display device.
Contact panel provides a kind of interface of new human-computer interaction, its in the use more intuition, more meet human nature.And contact panel and flat-panel screens are combined, make flat-panel screens have touch controllable function, be a kind of application trend of flat-panel screens development.
See also Fig. 1, it illustrates a kind of circuit diagram of sensing cell of the known LCD that is applied to have touch controllable function.As everyone knows, LCD comprises two substrates and is located in liquid crystal layer between the two substrates that wherein one of two substrates is provided with multi-strip scanning line and many data lines.Sweep trace intersects mutually with data line and LCD is divided into a plurality of pixel regions.In order to make LCD have touch controllable function, LCD further comprises a plurality of sensing cells, and these sensing cells are set at respectively in some pixel region.
As shown in Figure 1, existing application generally comprises three transistors and two electric capacity (3T2C structure), i.e. transistor 11, transistor 12, transistor 13, reference capacitance 15 and liquid crystal capacitance 16 in the sensing cell 10 of the LCD with touch controllable function.Wherein, the grid of transistor 11 is electrically coupled to sweep trace G
n, its source electrode is electrically coupled to external power supply V
InitThe grid of transistor 12 is electrically coupled to the drain electrode of transistor 11, and its source electrode is electrically coupled to external power supply V
InitThe grid of transistor 13 is electrically coupled to and sweep trace G
nNext adjacent bar sweep trace G
N+1, its source electrode is electrically coupled to the drain electrode of transistor 12, and its drain electrode is electrically coupled to corresponding read line R
nReference capacitance 15 is electrically coupled to sweep trace G
nAnd between the drain electrode of transistor 11, liquid crystal capacitance 16 then is electrically coupled to the drain electrode and the common electric potential V of transistor 11
ComBetween.Liquid crystal capacitance 16 is made of the pixel electrode of LCD, common electrode and the liquid crystal layer that is located in it, so the capacitance of liquid crystal capacitance 16 degree that can be pressed along with sensing cell 10 and changing.
As sweep trace G
nIn sweep signal when being high voltage, transistor 11 conductings, this moment, reference capacitance 15 was initialized to external power supply V with the voltage at place's of electrical connection (grid of transistor 12) between the liquid crystal capacitance 16
InitAs sweep trace G
nIn sweep signal when being low-voltage, transistor 11 ends, the grid voltage V of transistor 12
Gate=V
Init-Δ V*C
Ref/ (C
Ref+ C
Lc+ C
p).Wherein, Δ V is sweep trace G
nIn high low-voltage poor of sweep signal; C
RefCapacitance for reference capacitance; C
LcChange for the capacitance of liquid crystal capacitance and according to the dynamics that the user pushes the sensing cell 10 of LCD; C
pBe the relevant stray capacitance capacitance of (figure does not show).In addition, transistor 12 part conductings this moment, the voltage V of its grid
GateThe conducting degree of decision transistor 12, and the drain electrode of transistor 12 is according to the voltage V on its grid
GateAnd the generation correspondent voltage.As sweep trace G
N+1In sweep signal when being high voltage, transistor 13 conductings, the voltage in the drain electrode of transistor 12 is by read line R
nAnd be read to reading unit (figure do not show) with as sensing signal, reading unit judges according to the voltage in the drain electrode of transistor 12 whether sensing cell 10 is touched.
Yet the sensing signal that above-mentioned sensing cell 10 is exported is a simulating signal, therefore is easy to be subjected to the influence of various factorss such as environment, and then the relevant judged result of influence.That is to say that the output result of known sensing cell 10 is inaccurate, be not easy to judge it and whether be touched.In addition, the sensing signal that known sensing cell 10 is exported need carry out certain processing by reading unit just can carry out the judgement whether sensing cell 10 is touched, so need to use the circuit that reads with complicated circuit.
Summary of the invention
Purpose of the present invention is exactly that a kind of flat-panel screens with touch controllable function is being provided, simply and exactly to judge relevant touch operation.
A further object of the present invention provides a kind of contact panel, simply and exactly to judge relevant touch operation.
The present invention proposes a kind of flat-panel screens with touch controllable function, and it comprises sweep trace, data line and sensing cell.Sweep trace and data line are arranged in a crossed manner and flat-panel screens is divided into pixel region.Sensing cell is arranged in the pixel region respectively, and each sensing region comprises sensor and Digital Logic reverser respectively.Whether sensor is used to detect sensing cell and is touched and produces the corresponding sensing signal.The Digital Logic reverser is electrically coupled to sensor and produces output signal with foundation corresponding sensing signal, and wherein output signal comprises first current potential and second current potential, and whether first current potential and second current potential are different and represent this sensing cell to be touched respectively.
The present invention also proposes a kind of contact panel, and it comprises sweep trace and sensing cell.Each sensing cell comprises sensor and Digital Logic reverser respectively.Whether sensor is used to detect sensing cell and is touched and produces the corresponding sensing signal.The Digital Logic reverser is electrically coupled to sensor and produces output signal with foundation corresponding sensing signal, and wherein output signal comprises first current potential and second current potential, and whether first current potential and second current potential are different and represent this sensing cell to be touched respectively.
In a preferred embodiment of the invention, above-mentioned Digital Logic reverser comprises the first transistor, transistor seconds and electric capacity.The first transistor comprises first control end, first path terminal and alternate path end, and wherein first control end is electrically coupled to first reference voltage, and first path terminal is electrically coupled to first reference voltage.Transistor seconds comprises second control end, the 3rd path terminal and four-way terminal, wherein second control end is electrically coupled to sensor with corresponding sensing signal that receiving sensor was produced, the 3rd path terminal is electrically coupled to second reference voltage, and the four-way terminal is electrically coupled to the alternate path end, and the electric property coupling place of alternate path end and four-way terminal as the output terminal of Digital Logic reverser with output signal output.Electric capacity is electrically coupled between the output terminal and earth potential of this Digital Logic reverser.Wherein, the first transistor is identical with the type of transistor seconds, and first reference voltage and second reference voltage are different.
In another preferred embodiment of the present invention, above-mentioned Digital Logic reverser comprises the first transistor and transistor seconds.The first transistor comprises first control end, first path terminal and alternate path end, and wherein first control end is electrically coupled to sensor, and first path terminal is electrically coupled to first reference voltage.Transistor seconds comprises second control end, the 3rd path terminal and four-way terminal, wherein second control end is electrically coupled to sensor, the 3rd path terminal is electrically coupled to second reference voltage, and the four-way terminal is electrically coupled to the alternate path end, and the electric property coupling place of alternate path end and four-way terminal as the output terminal of Digital Logic reverser with output signal output.Wherein, the type of the first transistor and transistor seconds is different, and first reference voltage and second reference voltage are different.
In a preferred embodiment of the invention, above-mentioned sensor is the push type sensor.Particularly, sensor comprises the 3rd transistor, reference capacitance and pushes electric capacity.The 3rd transistor comprises the 3rd control end, five-way terminal and the 6th path terminal, and wherein the 3rd control end is electrically coupled to corresponding scanning line, and the five-way terminal is electrically coupled to next adjacent bar scanning of corresponding scanning line.Reference capacitance is electrically coupled between the 6th path terminal next bar sweep trace adjacent with corresponding scanning line.Push electric capacity and be electrically coupled between the 6th path terminal and the earth potential and be electrically coupled to reference capacitance, wherein reference capacitance and push electric property coupling place between the electric capacity as the output terminal of sensor with output corresponding sensing signal.Preferably, flat-panel screens is a LCD, and push type electric capacity is made of pixel electrode, the common electrode of the correspondence of LCD and the liquid crystal layer that is located in it.
In another preferred embodiment of the present invention, above-mentioned sensor is a photosensor.Particularly, sensor comprises the 3rd transistor and electric capacity.The 3rd transistor comprises the 3rd control end, five-way terminal and the 6th path terminal, and wherein the 3rd control end is electrically coupled to corresponding scanning line, and the five-way terminal is electrically coupled to the 3rd reference voltage.Electric capacity is electrically coupled between the 6th path terminal and the earth potential, and the electric property coupling place between electric capacity and the 6th path as the output terminal of sensor with output corresponding sensing signal.
Whether the sensing cell that is applied to flat-panel screens and contact panel of the present invention utilizes sensor to detect sensing cell and is touched and produces the corresponding sensing signal, whether and the Digital Logic reverser produces corresponding logic output signal according to sensing signal, be touched accurately to judge sensing cell.Because the signal that the Digital Logic reverser is exported is exactly a digital signal, therefore do not need to utilize the operation that circuit is judged of reading in addition with complicated circuit.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is depicted as a kind of circuit diagram of sensing cell of the known LCD that is applied to have touch controllable function.
The first embodiment of the invention that is depicted as Fig. 2 discloses is applied to have the circuit block diagram of sensing cell of the flat-panel screens of touch controllable function.
Fig. 3 is depicted as the physical circuit figure of sensing cell shown in Figure 2.
The physical circuit figure of the sensing cell that the second embodiment of the invention that is depicted as Fig. 4 discloses.
Wherein, description of reference numerals is as follows:
10: sensing cell
11,12,13: transistor
15: reference capacitance
16: liquid crystal capacitance
G
n: corresponding scanning line
G
N+1: next bar sweep trace that corresponding scanning line is adjacent
R
n: read line
V
Init: external power supply
100,200: sensing cell
110,210: sensor
120,220: the Digital Logic reverser
V
i: the sensing signal that sensor produced
V
o: the Digital Logic reverser
121,221: the first transistor
122,222: transistor seconds
123,212: electric capacity
111: the three transistors
112: reference capacitance
113: push electric capacity
V
DD: high reference voltage
V
DL: low reference voltage
211: photistor
A, C: the electric property coupling place of the first transistor and transistor seconds
B: reference capacitance and the electric property coupling place of pushing electric capacity
D: the electric property coupling place of the drain electrode of photistor and electric capacity
V
Rst: reference voltage
Embodiment
See also Fig. 2 and Fig. 3, wherein Fig. 2 is depicted as that first embodiment of the invention discloses is applied to have the circuit block diagram of sensing cell of the flat-panel screens of touch controllable function, and Fig. 3 is depicted as the physical circuit figure of sensing cell shown in Figure 2.The flat-panel screens that the embodiment of the invention provided can be LCD, and it is similar to existing liquid crystal display device structure, the structure difference that does not exist together and then be sensing cell.Therefore, following examples are mainly used in introduces sensing cell, does not repeat them here for the dependency structure of flat-panel screens.
As shown in Figure 2, sensing cell 100 comprises sensor 110 and Digital Logic reverser 120.Wherein, whether sensor 110 is used to detect sensing cell 100 and is touched and produces corresponding sensing signal V
i, and Digital Logic reverser 120 is electrically coupled to sensor 110 with foundation corresponding sensing signal V
iAnd generation corresponding output signal V
o, output signal V
oWhether be touched to represent sensing cell 100 respectively by logic high potential and logic low potential composition.
Particularly, as shown in Figure 3, Digital Logic reverser 120 comprises the first transistor 121, transistor seconds 122 and electric capacity 123.Wherein, the first transistor 121 is identical with the type of transistor seconds 122, and for example it all is the n transistor npn npn.The grid of the first transistor 121 (i.e. first control end) is electrically coupled to first reference voltage, as high level reference voltage V
DD, its source electrode (i.e. first path terminal) is electrically coupled to high level reference voltage V too
DD, its drain electrode (being the alternate path end) then with drain electrode (the i.e. four-way terminal) electric property coupling of transistor seconds 122.The grid of transistor seconds 122 (i.e. second control end) is electrically coupled to the sensing signal V that sensor 110 is produced with receiving sensor 110
i, and its source electrode (i.e. the 3rd path terminal) is electrically coupled to second reference voltage, as low level reference voltage V
DLFirst reference voltage and second reference voltage are different.In addition, the A of electric property coupling place of the drain electrode of the drain electrode of the first transistor 121 and transistor seconds 122 as the output terminal of Digital Logic reverser 120 so that output signal V to be provided
o Electric capacity 123 is electrically coupled between the output terminal and earth potential of Digital Logic reverser 120.
In the present embodiment, sensor 110 is the push type sensor, and it comprises the 3rd transistor 111, reference capacitance 112 and pushes electric capacity 113.The 3rd transistor 111 is identical with the type of the first transistor 121 and transistor seconds 122, is the n transistor npn npn also.Particularly, the grid of the 3rd transistor 111 (i.e. the 3rd control end) is electrically coupled to corresponding scanning line G
n, its source electrode (i.e. five-way terminal) is electrically coupled to and sweep trace G
nNext adjacent bar sweep trace G
N+1, its drain electrode (i.e. the 6th path terminal) then is electrically coupled to reference capacitance 112 and pushes electric property coupling place between the electric capacity 113.Reference capacitance 112 is electrically coupled to the drain electrode and the sweep trace G of the 3rd transistor 111
N+1Between, be electrically coupled between the drain electrode and earth potential of the 3rd transistor 111 and push electric capacity 113, and reference capacitance 112 and push the corresponding sensing signal V that the B of electric property coupling place between the electric capacity 113 is produced with output transducer 110 as the output terminal of sensor 110
i
Preferably, push electric capacity 113 and be the liquid crystal capacitance that concrete structure produced of LCD, its pixel electrode by the correspondence of LCD, common electrode and the liquid crystal layer that is located in it are constituted.When sensing cell 100 was pressed, the capacitance of pushing electric capacity 113 changed thereupon, and along with the increase of the dynamics of pushing, the capacitance of pushing electric capacity 113 increases thereupon.
As everyone knows, flat-panel screens in turn feeds sweep signal to each sweep trace.That is to say that the sweep signal in the sweep trace is made up of logic high potential and logic low potential, wherein logic high potential is generally a certain reference voltage V, and logic low potential is generally 0 voltage.In the case, the difference of logic high potential and logic low potential is Δ V.
As sweep trace G
nIn sweep signal when being in logic high potential, 111 conductings of the 3rd transistor, and sweep trace G
N+1In sweep signal be in logic low potential.Therefore, the 3rd transistor 111 by conducting can be initialized to logic low potential with reference capacitance 112 and the current potential of pushing the B of electric property coupling place of electric capacity 113.
As sweep trace G
nIn sweep signal be in logic low potential and sweep trace G
N+1In sweep signal when being in logic high potential, the 3rd transistor 111 ends, the voltage of the B of electric property coupling place is then because electric charge coupling effect and along with the voltage of sweep trace rises suddenly and rises.Particularly, the voltage Vi=Δ V*C of the B of electric property coupling place
Lc/ (C
Ref+ C
Lc)=Δ V/ (1+C
Ref/ C
Lc), C wherein
RefBe the capacitance of reference capacitance 112, and C
LcFor pushing the capacitance of electric capacity 113.
That is to say that when sensing cell 100 was not pressed, transistor seconds 122 ended, this moment is because the grid of the first transistor 121 is electrically coupled to high reference voltage V
DD, so the first transistor 121 conductings, high reference voltage V
DD Electric capacity 123 is charged, and the voltage V that the output terminal of Digital Logic reverser 120 is exported
oBe logic high potential.When sensing cell 100 was pressed and reach certain dynamics, transistor seconds 122 conductings of Digital Logic reverser 120 were though this moment, the first transistor 121 continued conductings, high reference capacitance V
DD Electric capacity 123 is continued charging, but transistor seconds 122 conductings this moment, low reference capacitance V
DL Electric capacity 123 is discharged, thus the voltage V that the output terminal of Digital Logic reverser 120 is exported
oBe logic low potential.
Therefore, the sensing cell 100 of the present embodiment sensing signal V that sensor 110 can be produced
iConvert logical signal V to by Digital Logic reverser 120
oThereby, judge whether sensing cell 100 is touched.Therefore, the output signal V of the sensing cell 100 of present embodiment
oBe logical signal, comparatively accurately be easy to interpretation, and it does not need to utilize the circuit that reads with complicated circuit to read and judge output signal V
o
See also Fig. 4, it is depicted as the physical circuit figure of the sensing cell that second embodiment of the invention discloses.As shown in Figure 4, sensing cell 200 also comprises sensor 210 and Digital Logic reverser 220.
Wherein, Digital Logic reverser 220 comprises the first transistor 221 and transistor seconds 222.The first transistor 221 is different with the type of transistor seconds 222, and for example the first transistor 221 is the p transistor npn npn, and transistor seconds 222 is the n transistor npn npn.The grid (i.e. second control end) of the grid of the first transistor 221 (i.e. first control end) and transistor seconds 222 all is electrically coupled to the corresponding sensing signal V that the output terminal of sensor 210 is produced with receiving sensor 210
iThe source electrode of the first transistor 221 (i.e. first path terminal) is electrically coupled to high reference voltage V
DD, and the source electrode of transistor seconds 222 (i.e. the 3rd path terminal) is electrically coupled to low reference voltage V
DLIn addition, the drain electrode of the first transistor 221 (being the alternate path end) is electrically coupled to the drain electrode (i.e. four-way terminal) of transistor seconds 222, and both C of electric property coupling place as the output terminal of Digital Logic reverser 220 to produce output signal V
o
In addition, the sensor 210 of present embodiment uses photosensor.Particularly, sensor 210 comprises photistor 211 and electric capacity 212.The grid of photistor 211 (i.e. the 3rd control end) is electrically coupled to corresponding scanning line G
n, its source electrode (i.e. five-way terminal) is electrically coupled to reference voltage V
Rst Electric capacity 212 is electrically coupled between the drain electrode (i.e. the 6th path terminal) and earth potential of photistor 211, and the sensing signal V that produced with output transducer 210 as the output terminal of sensor 210 of the B of electric property coupling place of the drain electrode of photistor 211 and electric capacity 212
i
When sensing cell 200 is not touched, the intensity of illumination maximum that photistor 211 is subjected to, illumination is also maximum to the negative voltage that grid produced of photistor 211.As sweep trace G
nIn sweep signal when being logic high potential, because voltage and sweep trace G that illumination is produced on the grid of photistor 211
nIn to be in the sweep signal polarity of logic high potential opposite, therefore this moment photistor 211 grid on voltage lower, photistor 211 ends.At this moment, the sensing signal V that produced of photosensor 210
iLower, the first transistor 221 conductings of Digital Logic reverser 220, and transistor seconds 222 ends, the output voltage V that Digital Logic reverser 220 is exported
oBe high reference voltage V
DD, i.e. logic high potential.
When sensing cell 200 was touched, the intensity of illumination that photistor 211 is subjected to reduced, and illumination also reduces the negative voltage that grid produced of photistor 211.Under this situation, as sweep trace G
nIn sweep signal when being logic high potential, the voltage on the grid of photistor is higher, the conducting photistor 211 wholly or in part.When photistor 211 during to the small part conducting, reference voltage V
Rst Electric capacity 212 is charged.Many more when the illumination that sensing cell 200 is blocked, photistor 211 conducting degree are big more, the sensing signal V that photosensor 210 is produced
iBig more.That is to say the sensing signal V that this moment, photosensor 210 was produced
iVoltage higher, the first transistor 221 of Digital Logic reverser 220 will be cut off, transistor seconds 222 then is switched on.The output voltage V that Digital Logic reverser 220 is exported
oBe low reference voltage V
DL, i.e. logic low potential.
Therefore, the sensing cell 200 of the present embodiment sensing signal V that also photosensor 210 can be produced
iConvert logical signal V to by Digital Logic reverser 220
oThereby, judge accurately whether sensing cell 200 is touched.
It will be appreciated by persons skilled in the art that the photosensor 210 that second embodiment of the invention discloses also can combine to constitute sensing cell with the Digital Logic reverser 120 that first embodiment is disclosed; Similarly, the Digital Logic reverser 220 that disclosed of the present invention's push type sensor 110 that also first embodiment can be disclosed and second embodiment is combined to constitute sensing cell.
In addition, it will be appreciated by persons skilled in the art that disclosed sensing cell can directly apply in the flat-panel screens, so that flat-panel screens has touch controllable function.Certainly, thus disclosed sensing cell also can be applied to have on the panel of multi-strip scanning line and constitutes contact panel.
In sum, whether the sensing cell that is applied to flat-panel screens and contact panel of the present invention utilizes sensor to detect sensing cell and is touched and produces the corresponding sensing signal, whether and the Digital Logic reverser produces corresponding logic output signal according to sensing signal, be touched accurately to judge sensing cell.The signal of being exported owing to the Digital Logic reverser is a logic output signal in addition, so it does not need to utilize the circuit that reads with complicated circuit to read the decision logic output signal.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the protection domain that claim defined of enclosing.
Claims (15)
1. flat-panel screens with touch controllable function comprises:
The multi-strip scanning line;
Many data lines, arranged in a crossed manner and flat-panel screens is divided into a plurality of pixel regions with described multi-strip scanning line; And
A plurality of sensing cells are arranged in described a plurality of pixel region, and wherein each described sensing cell comprises respectively:
Whether one sensor is used to detect described sensing cell and is touched and produces a corresponding sensing signal; And
One Digital Logic reverser, be electrically coupled to this sensor to produce an output signal according to this corresponding sensing signal, wherein this output signal comprises one first current potential and one second current potential, and whether this first current potential and this second current potential are different and represent described sensing cell to be touched respectively.
2. the flat-panel screens with touch controllable function as claimed in claim 1, wherein this Digital Logic reverser comprises:
One the first transistor comprises:
One first control end is electrically coupled to one first reference voltage;
One first path terminal is electrically coupled to this first reference voltage; And
One alternate path end;
One transistor seconds comprises:
One second control end is electrically coupled to this sensor to receive this corresponding sensing signal that this sensor is produced;
One the 3rd path terminal is electrically coupled to one second reference voltage; And
One four-way terminal is electrically coupled to this alternate path end, and the electric property coupling place of this alternate path end and this four-way terminal as an output terminal of this Digital Logic reverser to export this output signal; And
One electric capacity is electrically coupled between this output terminal and earth potential of this Digital Logic reverser;
Wherein, this first transistor is identical with the type of this transistor seconds, and this first reference voltage and this second reference voltage are different.
3. the flat-panel screens with touch controllable function as claimed in claim 1, wherein this Digital Logic reverser comprises:
One the first transistor comprises:
One first control end is electrically coupled to this sensor;
One first path terminal is electrically coupled to one first reference voltage; And
One alternate path end; And
One transistor seconds comprises:
One second control end is electrically coupled to this sensor;
One the 3rd path terminal is electrically coupled to one second reference voltage; And
One four-way terminal is electrically coupled to this alternate path end, and the electric property coupling place of this alternate path end and this four-way terminal as an output terminal of this Digital Logic reverser to export this output signal;
Wherein, the type of this first transistor and this transistor seconds is different, and this first reference voltage and this second reference voltage are different.
4. the flat-panel screens with touch controllable function as claimed in claim 1, wherein this sensor is a push type sensor.
5. the flat-panel screens with touch controllable function as claimed in claim 4, wherein this push type sensor comprises:
One transistor comprises:
One control end is electrically coupled to a corresponding scanning line;
One first path terminal is electrically coupled to next adjacent bar sweep trace of this corresponding scanning line; And
One alternate path end;
One reference capacitance is electrically coupled to this alternate path end this next bar sweep trace adjacent with this corresponding scanning line; And
One pushes electric capacity, be electrically coupled between this alternate path end and the earth potential and be electrically coupled to this reference capacitance, wherein this reference capacitance and this push electric property coupling place between the electric capacity as an output terminal of this sensor to export this corresponding sensing signal.
6. the flat-panel screens with touch controllable function as claimed in claim 5, wherein this flat-panel screens is a LCD, and this is pushed electric capacity and is made of the pixel electrode of a correspondence of this LCD, the liquid crystal layer that community electrode and is located in it.
7. the flat-panel screens with touch controllable function as claimed in claim 1, wherein this sensor is a photosensor.
8. the flat-panel screens with touch controllable function as claimed in claim 7, wherein this photosensor comprises:
One transistor comprises:
One control end is electrically coupled to a corresponding scanning line;
One first path terminal is electrically coupled to a reference voltage; And
One alternate path end; And
One electric capacity is electrically coupled between this alternate path end and the earth potential, and the electric property coupling place between this electric capacity and this alternate path as an output terminal of this sensor to export this corresponding sensing signal.
9. contact panel comprises:
The multi-strip scanning line; And
A plurality of sensing cells, wherein each described sensing cell comprises respectively:
Whether one sensor is used to detect this sensing cell and is touched and produces a corresponding sensing signal; And
One Digital Logic reverser, be electrically coupled to this sensor to produce an output signal according to this corresponding sensing signal, wherein this output signal comprises one first current potential and one second current potential, and whether this first current potential and this second current potential are different and represent this sensing cell to be touched respectively.
10. contact panel as claimed in claim 9, wherein this Digital Logic reverser comprises:
One the first transistor comprises:
One first control end is electrically coupled to one first reference voltage;
One first path terminal is electrically coupled to this first reference voltage; And
One alternate path end;
One transistor seconds comprises:
One second control end is electrically coupled to this sensor to receive this corresponding sensing signal that this sensor is produced;
One the 3rd path terminal is electrically coupled to one second reference voltage;
One four-way terminal is electrically coupled to this alternate path end, and the electric property coupling place of this alternate path end and this four-way terminal as an output terminal of this Digital Logic reverser to export this output signal; And
One electric capacity is electrically coupled between this output terminal and earth potential of this Digital Logic reverser;
Wherein, this first transistor is identical with the type of this transistor seconds, and this first reference voltage and this second reference voltage are different.
11. contact panel as claimed in claim 9, wherein this Digital Logic reverser comprises:
One the first transistor comprises:
One first control end is electrically coupled to this sensor;
One first path terminal is electrically coupled to one first reference voltage; And
One alternate path end; And
One transistor seconds comprises:
One second control end is electrically coupled to this sensor;
One the 3rd path terminal is electrically coupled to one second reference voltage; And
One four-way terminal is electrically coupled to this alternate path end, and the electric property coupling place of this alternate path end and this four-way terminal as an output terminal of this Digital Logic reverser to export this output signal;
Wherein, the type of this first transistor and this transistor seconds is different, and the polarity of this first reference voltage and this second reference voltage is different.
12. contact panel as claimed in claim 9, wherein this sensor is a push type sensor.
13. contact panel as claimed in claim 12, wherein this push type sensor comprises:
One transistor comprises:
One control end is electrically coupled to a corresponding scanning line;
One first path terminal is electrically coupled to next adjacent bar sweep trace of this corresponding scanning line; And
One alternate path end;
One reference capacitance is electrically coupled to this alternate path end this next bar sweep trace adjacent with this corresponding scanning line; And
One push type electric capacity, be electrically coupled between this alternate path end and the earth potential and be electrically coupled to this reference capacitance, wherein the electric property coupling place between this reference capacitance and this push type electric capacity as an output terminal of this sensor to export this corresponding sensing signal.
14. contact panel as claimed in claim 9, wherein this sensor is a photosensor.
15. contact panel as claimed in claim 14, wherein this photosensor comprises:
One transistor comprises:
One control end is electrically coupled to a corresponding scanning line;
One first path terminal is electrically coupled to one the 3rd reference voltage; And
One alternate path end; And
One electric capacity is electrically coupled between this alternate path end and the earth potential, and the electric property coupling place between this electric capacity and this alternate path as an output terminal of this sensor to export this corresponding sensing signal.
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|---|---|---|---|
| CN2010102334600A CN101900904B (en) | 2010-07-19 | 2010-07-19 | Flat display and touch panel with touch function |
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|---|---|---|---|
| CN2010102334600A CN101900904B (en) | 2010-07-19 | 2010-07-19 | Flat display and touch panel with touch function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769452A (en) * | 2012-07-12 | 2012-11-07 | 深圳Tcl新技术有限公司 | Method and device for controlling touch key, and television set |
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| CN102769452A (en) * | 2012-07-12 | 2012-11-07 | 深圳Tcl新技术有限公司 | Method and device for controlling touch key, and television set |
| CN102769452B (en) * | 2012-07-12 | 2016-08-10 | 深圳Tcl新技术有限公司 | The control method of touch key-press, device and television set |
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| CN103871374B (en) * | 2012-12-11 | 2016-04-13 | 比亚迪股份有限公司 | Liquid crystal control panel |
| US9529468B2 (en) | 2013-06-26 | 2016-12-27 | Boe Technology Group Co., Ltd. | Touch driving circuit, liquid crystal panel and its driving method |
| CN103354082A (en) * | 2013-06-26 | 2013-10-16 | 京东方科技集团股份有限公司 | Touch drive circuit, liquid crystal panel, and method for driving liquid crystal panel |
| CN103354082B (en) * | 2013-06-26 | 2015-09-09 | 京东方科技集团股份有限公司 | A kind of touch driving circuit, liquid crystal panel and driving method thereof |
| CN104102384A (en) * | 2014-04-01 | 2014-10-15 | 友达光电股份有限公司 | touch detection circuit |
| CN104102384B (en) * | 2014-04-01 | 2017-03-29 | 友达光电股份有限公司 | Touch detection circuit |
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| CN108414959A (en) * | 2018-04-04 | 2018-08-17 | 京东方科技集团股份有限公司 | Piezoelectric transducer detection circuit, array piezoelectric sensor circuit and control method |
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| CN108414959B (en) * | 2018-04-04 | 2024-02-23 | 京东方科技集团股份有限公司 | Piezoelectric sensor detection circuit, array piezoelectric sensor circuit and control method |
| CN114327138A (en) * | 2021-09-03 | 2022-04-12 | 友达光电股份有限公司 | Touch display and manufacturing method thereof |
| CN114327138B (en) * | 2021-09-03 | 2023-05-26 | 友达光电股份有限公司 | Touch display and manufacturing method thereof |
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| CN101900904B (en) | 2012-02-15 |
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