CN101887200B - Electronic paper of integrated capacitive touch screen and driving method thereof - Google Patents
Electronic paper of integrated capacitive touch screen and driving method thereof Download PDFInfo
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- CN101887200B CN101887200B CN 200910057268 CN200910057268A CN101887200B CN 101887200 B CN101887200 B CN 101887200B CN 200910057268 CN200910057268 CN 200910057268 CN 200910057268 A CN200910057268 A CN 200910057268A CN 101887200 B CN101887200 B CN 101887200B
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Abstract
The invention relates to electronic paper of an integrated capacitive touch screen and a driving method thereof. The electronic paper comprises a plurality of scanning lines, a plurality of touch induction lines, a plurality of mutual capacitors and a detecting circuit, wherein the scanning lines are mutually parallel, image scanning signals are input to the scanning lines in sequence and are used for conducting a thin film transistor connected with the scanning lines; the touch induction lines are mutually parallel and respectively intersected with the scanning lines in an insulated mode; the mutual capacitors are used for inducing whether the electronic paper is touched from the exterior or not; and the detecting circuit is used for detecting the capacitance variation of the mutual capacitors and is connected with the touch induction lines. Touch scanning signals are input to the scanning lines in sequence, and the time for inputting the touch scanning signals to the scanning lines is different from the time for inputting the image scanning signals to the scanning lines. The voltage of the touch scanning signals is lower than the conducting voltage of the thin film transistor, the detecting circuit detects the position of the mutual capacitor with capacitance variation, and thus, the touch position of the electronic paper from the exterior is determined.
Description
Technical field
The present invention relates to a kind of Electronic Paper and driving method thereof of integrated capacitive touch screen.
Background technology
The advantages such as flat panel display is little because of its volume, be easy to carry are widely used.By the reading habit that Electronic Paper and the e-book of electronic ink technologies manufacturing meets the mankind, compare general flat panel display, Electronic Paper is long-time be difficult for producing after reading tired, and very power saving.Compare the books paper, it is large that it has again memory space, the advantage of easy-to-look-up and environmental protection, and therefore, electronic paper technology has good development prospect.
See also Fig. 1, Fig. 1 is a kind of structural representation of electronic-paper display screen of prior art.This electronic-paper display screen 10 comprises a thin layer 11 and one and the substrate 12 that arranges of this thin layer 11 opposing parallel.Common electrode layer 13 is arranged at close these thin layer 11 1 sides between this thin layer 11 and this substrate 12, and this common electrode layer 13 is indium tin oxide target (ITO) layers.Thin film transistor (TFT) (Thin Film Transistor, TFT) layer 14 is arranged between this thin layer 11 and this substrate 12 near these substrate 12 1 sides.
Be provided with microcapsules 15 between this tft layer 14 and this common electrode layer 13, the diameter of these microcapsules 15 is approximately 100 microns.Be filled with color base liquid 16 in these microcapsules 15.Be suspended with the charged particle 17 that is different from these coloured base fluid 16 colors in this coloured base fluid 16.
The below is take this coloured base fluid 16 as blue, and this charged particle 17 is white, and the operation principles of this electronic-paper display screen 10 is described:
After added electric field between this tft layer 14 and this common electrode layer 13, this coloured charged particle 17 will be under the effect of electric field force, float to a surface of these microcapsules 15, if this surface as visible surface, these microcapsules 15 just show the colours white of this charged particle 17.After adding opposite electric field between this tft layer 14 and this common electrode layer 13, this charged particle 17 will drift to the another side of microcapsules 15, this moment, microcapsules 15 just showed the color blue of this coloured base fluid 16, thereby this electronic-paper display screen 10 is realized the demonstration of image and wiped.
See also Fig. 1, Fig. 2, Fig. 2 is the driving circuit schematic diagram of electronic-paper display screen 10 shown in Figure 1.The sweep trace 24 that this driving circuit 20 comprises data drive circuit 21, many data lines that are parallel to each other 22 that are connected with this data drive circuit 21, scan drive circuit 23, be connected with this scan drive circuit 23 and insulate and intersect vertically with this data line 22.Adjacent two sweep traces 24 and adjacent two data lines 22 are at a plurality of pixel cells of infall definition.
Each pixel cell comprises a thin film transistor (TFT) 25 and a memory capacitance 27.The grid of this thin film transistor (TFT) 25 connects one scan line 24, and source electrode connects a data line 22, and drain electrode connects a pixel electrode.These microcapsules 15 are arranged between this pixel electrode and this common electrode layer 13.This memory capacitance 27 is arranged at this and is arranged between this pixel electrode and this common electrode layer 13, and namely this memory capacitance 27 is arranged in parallel with these microcapsules 15 on circuit structure, be used for to keep the voltage at this microcapsules 15 two ends.Form the first stray capacitance 28 between this common electrode layer 13 and this sweep trace 24, form the second stray capacitance 29 between this common electrode layer 13 and this data line 22.This data line 22, this sweep trace 24, this thin film transistor (TFT) 25 and this pixel electrode are arranged at the tft layer 14 of this electronic-paper display screen 10.
this scan drive circuit 23 successively the output image sweep signal to this sweep trace 24, namely at synchronization, the image scanning signal can only be input to a horizontal scanning line 24, when this horizontal scanning line 24 has the input of image scanning signal, be connected in thin film transistor (TFT) 25 conductings of this horizontal scanning line 24, this data drive circuit 21 passes through the thin film transistor (TFT) 25 output image data signals of this row conducting to this pixel electrode, form electric field between this pixel electrode and this common electrode layer 13, make the charged particle 17 in these microcapsules 15 that drift occur, thereby the pixel of being controlled by this horizontal scanning line 24 shows image.The voltage at this microcapsules 15 two ends is simultaneously to these memory capacitance 27 chargings, when the thin film transistor (TFT) 25 that connects this horizontal scanning line 24 ends, this memory capacitance 27 keeps the voltage at this microcapsules 15 two ends, thereby the pixel that this horizontal scanning line 24 is controlled keeps the image that shows.Within the time of a frame picture, this scan drive circuit 23 scans this sweep trace 24 successively, thereby makes this electronic-paper display screen 10 show the image of this frame.
U.S. Patent application US20080055274 has proposed a kind of electronic-paper display screen of integrated capacitive touch function, as shown in Figure 3.This Electronic Paper touch-screen 30 comprises organic thin film layer 31, common electrode layer 32, microcapsule layer 33, optics glue-line 34, tft layer 35, insulation course 36, special steel foil layer 37 and the insulating protective layer 38 that sets gradually.This special steel foil layer 37 has certain resistivity, as the surface capacitance type electrode layer of this electronic-paper display screen 30.
Be electrode layer owing to adopting this special steel foil layer 37, the touch surface of the finger 39 of this electronic-paper display screen 30 is in an opposite side of these electronic-paper display screen 30 visible surfaces, and this electronic-paper display screen 30 with touch controllable function uses inconvenient.Simultaneously, because this electronic-paper display screen 30 with touch controllable function has increased optics glue-line 34, insulation course 36, special steel foil layer 37 compared to electronic display 10, this has the complex structure of the electronic-paper display screen 30 of touch controllable function.
Summary of the invention
Use inconvenient, baroque problem in order to solve the electronic-paper display screen with touch controllable function of the prior art, be necessary to provide a kind of Electronic Paper of integrated capacitive touch screen easy to use, simple in structure.
The present invention also provides a kind of driving method of Electronic Paper of above-mentioned integrated capacitive touch screen.
A kind of Electronic Paper of integrated capacitive touch screen comprises many sweep traces that are parallel to each other, and the image scanning signal is input to this sweep trace successively, is used for the thin film transistor (TFT) that conducting is connected with this sweep trace; Many the touch induction lines that are parallel to each other and intersect with the insulation of this sweep trace respectively; A plurality of mutual capacitance, each mutual capacitance are formed at every touch induction lines and every sweep trace infall, and this mutual capacitance is used for whether this Electronic Paper of touch-control of the induction external world; Be used for the circuit for detecting of the capacitance variation of this mutual capacitance of detecting, this circuit for detecting connects this touch induction lines; Touch scanning signals is input to this sweep trace successively, this touch scanning signals is input to the time of this sweep trace and time that this image scanning signal is input to this sweep trace staggers, the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT), when this Electronic Paper of extraneous touch-control, the position of the mutual capacitance that this circuit for detecting detecting capacitance changes is to determine the position of touch of outer this Electronic Paper of bound pair.
Wherein, this Electronic Paper also comprise a thin layer, one and the substrate, of this thin layer opposing parallel setting be arranged between this thin layer and this substrate common electrode layer, near this thin layer one side and be arranged between this thin layer and this substrate tft layer near this substrate one side.This common electrode layer etching is formed this touch induction lines.The scope of the magnitude of voltage of this touch scanning signals is-15V is to-10V.This circuit for detecting comprises a plurality of detecting units, and each detecting unit connects in these many touch induction lines and is used for detecting the variation of the capacitance of the mutual capacitance that is connected with this touch induction lines.Each detecting unit comprises an amplifier, and the electric capacity that is connected in parallel and resistance are connected between the negative-phase input and output terminal of this amplifier, and the negative-phase input of this amplifier also connects this touch induction lines, and normal phase input end receives common electric voltage.
A kind of driving method of Electronic Paper of integrated capacitive touch screen comprises the steps: that the image scanning signal is input to many sweep traces that are parallel to each other of this Electronic Paper successively, is used for the thin film transistor (TFT) that conducting is connected with sweep trace; Touch scanning signals is input to this sweep trace successively, and this touch scanning signals is input to the time of this sweep trace and time that this image scanning signal is input to this sweep trace staggers, and the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT); Extraneous this Electronic Paper of touch-control is formed at this Electronic Paper and is changed by the capacitance of the mutual capacitance of the corresponding touch induction lines in the position of touch-control and sweep trace infall; The position of the mutual capacitance that the circuit for detecting detecting capacitance that is connected with this touch induction lines changes is to determine the position of touch of outer this Electronic Paper of bound pair.
Wherein, the common electrode layer etching with this Electronic Paper forms this touch induction lines.The scope of the magnitude of voltage of this touch scanning signals is-15V is to-10V.
A kind of Electronic Paper of integrated capacitive touch screen comprises: many data lines that are parallel to each other, and viewdata signal is input to this data line, and is input to pixel electrode by the thin film transistor (TFT) of conducting; Many the touch induction lines that are parallel to each other and intersect with the insulation of this data line respectively; A plurality of mutual capacitance, each mutual capacitance are formed at every touch induction lines and every data line infall, and this mutual capacitance is used for whether this Electronic Paper of touch-control of the induction external world; Be used for the circuit for detecting of the capacitance variation of this mutual capacitance of detecting, this circuit for detecting connects this touch induction lines; Touch scanning signals is input to this data line, this touch scanning signals is input to the time of this data line and time that this viewdata signal is input to this data line staggers, when this Electronic Paper of extraneous touch-control, the position of the mutual capacitance that this circuit for detecting detecting capacitance changes is to determine the position of touch of outer this Electronic Paper of bound pair.
A kind of driving method of Electronic Paper of integrated capacitive touch screen comprises the steps: that viewdata signal is input to many data lines that are parallel to each other of this Electronic Paper, and is input to pixel electrode by the thin film transistor (TFT) of conducting; Touch scanning signals is input to this data line, and this touch scanning signals is input to the time of this data line and time that this viewdata signal is input to this data line staggers; Extraneous this Electronic Paper of touch-control is formed at this Electronic Paper and is changed by the capacitance of the mutual capacitance of the corresponding touch induction lines in the position of touch-control and data line infall; The circuit for detecting that is connected with this touch induction lines is detected the position of the mutual capacitance that this capacitance changes, to determine the position of touch of outer this Electronic Paper of bound pair.
compared with prior art, the Electronic Paper of integrated capacitive touch screen of the present invention comprises many touch induction lines that intersect with this sweep trace insulation, touch scanning signals is input to this sweep trace successively, this touch scanning signals is input to the time of this sweep trace and time that this image scanning signal is input to this sweep trace staggers, the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT), this Electronic Paper is normal to be shown in the situation that do not affect, Electronic Paper of the present invention does not need additionally to increase structure makes this Electronic Paper have touch controllable function, this Electronic Paper simple in structure.Simultaneously, this Electronic Paper can realize touch controllable function at display surface, and is easy to use.
Compared with prior art, the Electronic Paper of integrated capacitive touch screen of the present invention comprises many touch induction lines that intersect with this data line insulation, touch scanning signals and this viewdata signal stagger the input time on this data line, this Electronic Paper is normal to be shown in the situation that do not affect, Electronic Paper of the present invention does not need additionally to increase structure makes this Electronic Paper have touch controllable function, this Electronic Paper simple in structure.Simultaneously, this Electronic Paper can realize touch controllable function at display surface, and is easy to use.
Description of drawings
Fig. 1 is a kind of structural representation of Electronic Paper of prior art.
Fig. 2 is the driving circuit schematic diagram of Electronic Paper shown in Figure 1.
Fig. 3 is a kind of structural representation of the Electronic Paper with touch controllable function of prior art.
Fig. 4 is the schematic diagram of the first embodiment of the Electronic Paper of integrated capacitive touch screen of the present invention.
Fig. 5 is the electrical block diagram of Electronic Paper shown in Figure 4.
Fig. 6 is the drive waveforms figure of Electronic Paper shown in Figure 5.
Fig. 7 is the schematic diagram of the second embodiment of the Electronic Paper of integrated capacitive touch screen of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The Electronic Paper of integrated capacitive touch screen of the present invention and the Electronic Paper structural similarity without the touch-control function shown in Figure 1, this Electronic Paper comprise a thin layer and one and the substrate that arranges of this thin layer opposing parallel.Common electrode layer is arranged at close this thin layer one side between this thin layer and this substrate, and tft layer is arranged between this thin layer and this substrate near this substrate one side.Be provided with microcapsules between this tft layer and this common electrode layer, be filled with color base liquid in these microcapsules.Be suspended with the charged particle that is different from this coloured base fluid color in this coloured base fluid.
See also Fig. 4, Fig. 4 is the schematic diagram of the first embodiment of the Electronic Paper of integrated capacitive touch screen of the present invention.This Electronic Paper 40 comprises many sweep traces that are parallel to each other 41, many touch induction lines 43 and circuit for detecting 45 that are parallel to each other and insulate with this sweep trace 41 and intersect vertically respectively.One end of this touch induction lines 43 all connects this circuit for detecting 45.This sweep trace 41 is connected in the thin film transistor (TFT) of this sweep trace 41 for reception image scanning signal and conducting.In the present embodiment, this touch induction lines 43 forms by the common electrode layer along this Electronic Paper 40 of direction etching vertical with this sweep trace 41, and namely this touch induction lines 43 is many public electrode wires that are parallel to each other and insulate and intersect vertically with this sweep trace 41 respectively.The number of this touch induction lines 43 can be according to the actual needs and arrange flexibly, for example: the point of crossing that can increase by the number that increases this touch induction lines 43 that etching forms this touch induction lines 43 and this sweep trace 41.
See also Fig. 4, Fig. 5, Fig. 5 is the driving circuit schematic diagram of Electronic Paper 40 shown in Figure 4.At every touch induction lines 43 infall with every sweep trace 41, all form a mutual capacitance 47, this mutual capacitance 47 is used for whether this Electronic Paper 40 of touch-control of the induction external world.The number of this mutual capacitance 47 can change by the number that changes this touch induction lines 43 according to actual needs.This circuit for detecting 45 is used for the variation of the capacitance of this mutual capacitance 47 of detecting.
This circuit for detecting 45 comprises a plurality of detecting units 451, connects one to one between this detecting unit 451 and this touch induction lines 43, and this detecting unit 451 is for the variation of the capacitance of detecting the mutual capacitance 47 that is connected with this touch induction lines 43.Each detecting unit 451 includes an amplifier, and the negative-phase input of this amplifier connects an end of the touch induction lines 43 of these detecting unit 451 correspondences, and the normal phase input end of this amplifier connects a common electric voltage.The parallel circuit that one resistance and electric capacity form is connected between the negative-phase input and output terminal of this amplifier.
The driving method of this Electronic Paper 40 is as follows:
The image scanning signal is input to this scanning 41 lines successively, the thin film transistor (TFT) conducting that is connected with this sweep trace 41.
Touch scanning signals is input to this sweep trace 41 successively, this touch scanning signals is input to the time of this sweep trace 41 and time that this image scanning signal is input to this sweep trace 41 staggers, be also, do not input these touch scanning signals to this sweep trace 41 to this sweep trace 41 this image scanning signal of input the time, in other words, that is to say that this touch scanning signals and this image scanning signal are not input to this sweep trace 41 in section at one time.Wherein, the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT).In the present embodiment, the square wave scope of this touch scanning signals voltage waveform is-15V～-10V, due to the forward voltage of this touch scanning signals voltage lower than this thin film transistor (TFT), when this touch scanning signals voltage is input to this sweep trace 41, the thin film transistor (TFT) cut-off that this sweep trace 41 connects can't affect the normal demonstration of this Electronic Paper 40.
Extraneous this Electronic Paper 40 of touch-control, capacitive sensing effect due to human body, with this Electronic Paper 40 by the position of touch-control relative, insulate by this sweep trace 41 with this sweep trace 41 and mutual capacitance 47 that this touch induction lines 43 of intersecting vertically forms near electric field change, thereby change the capacitance of this mutual capacitance 47.
The position of touch of this Electronic Paper 40 of outer bound pair is determined in the variation of the capacitance of this circuit for detecting 45 these mutual capacitance 47 of detecting that are connected with this touch induction lines 43, and the position of the mutual capacitance 47 that changes according to this capacitance.This circuit for detecting 45 is to detect the variation of the capacitance of this mutual capacitance 47 by each detecting unit 451 that is connected with this touch induction lines 43, and then determines the position of touch of this Electronic Paper 40 of outer bound pair.
See also Fig. 6, Fig. 6 is the drive waveforms figure of Electronic Paper 40 shown in Figure 5.Vgate represents to be input to the touch scanning signals waveform of this sweep trace 41; When Vcom1 represents this Electronic Paper 40 not by touch-control, the voltage waveform on this touch induction lines 43, i.e. common electric voltage waveform on this touch induction lines 43; When Vout1 represents this Electronic Paper 40 not by touch-control, the voltage of the output terminal of the amplifier of the detecting unit 451 of this circuit for detecting 45 output; When Vcom2 represents this Electronic Paper 40 by touch-control, the voltage waveform on this touch induction lines 43; When Vout2 represents this Electronic Paper 40 by touch-control, the voltage of the output terminal of the amplifier of the detecting unit 451 of this circuit for detecting 45 output.Compare Vcom1 and Vcom2, Vout1 and Vout2, when this Electronic Paper 40 during by touch-control, the capacitance of the mutual capacitance 47 that position of touch is relative changes, change with the voltage on touch induction lines 43 that this mutual capacitance 47 is connected, thereby the voltage of detecting unit 451 outputs of this circuit for detecting 45 is changed.In waveform shown in Figure 6, the voltage of detecting unit 451 outputs of corresponding position of touch increases.
compared with prior art, the Electronic Paper 40 of integrated capacitive touch screen of the present invention is etched into many touch induction lines 43 that insulate and intersect vertically with this sweep trace 41 with this common electrode layer, touch scanning signals is input to this sweep trace 41 successively, this touch scanning signals is input to the time of this sweep trace 41 and time that this image scanning signal is input to this sweep trace 41 staggers, the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT), in the situation that do not affect the normal demonstration of this Electronic Paper 40, Electronic Paper 40 of the present invention does not need additionally to increase structure makes this Electronic Paper 40 have touch controllable function, this Electronic Paper 40 simple in structure.Simultaneously, this Electronic Paper 40 can realize touch controllable function at display surface, and is easy to use.
See also Fig. 7, Fig. 7 is the schematic diagram of the second embodiment of the Electronic Paper of integrated capacitive touch screen of the present invention.The structural similarity of the Electronic Paper 40 of this Electronic Paper 70 and the first embodiment, this Electronic Paper 70 comprise many data lines that are parallel to each other 71, many touch induction lines 73 and circuit for detecting 75 that are parallel to each other and insulate with this data line 71 and intersect vertically respectively.At every touch induction lines 73 infall with every data line 71, all form a mutual capacitance, this mutual capacitance is used for whether this Electronic Paper 70 of touch-control of the induction external world.This circuit for detecting 75 is connected respectively with this touch induction lines 73, is used for the capacitance variation of this mutual capacitance of detecting.This touch induction lines 73 forms by the common electrode layer along this Electronic Paper 70 of direction etching vertical with this data line 71, and namely this touch induction lines 73 is many public electrode wires that are parallel to each other and insulate and intersect vertically with this data line 71 respectively.Viewdata signal is input to this data line 71, and is input to pixel electrode by the thin film transistor (TFT) of conducting.
This circuit for detecting 75 comprises a plurality of detecting units, and this detecting unit and this touch induction lines 73 connect one to one, and this detecting unit is for the variation of the capacitance of detecting the mutual capacitance that is connected with this touch induction lines 73.Each detecting unit comprises an amplifier, the electric capacity that is connected in parallel and resistance are connected between the negative-phase input and output terminal of this amplifier, the negative-phase input of this amplifier also connects an end of touch induction lines corresponding to this detecting unit, and the normal phase input end of this amplifier receives common electric voltage.
In the driving method of this Electronic Paper 70, image time of these Electronic Paper 70 1 frames is divided into data image signal input time and touch scanning signals input time, data image signal input time and touch scanning signals stagger input time, be data image signal input time to normal display state that should Electronic Paper 70, touch scanning signals input time is to touch-control state that should Electronic Paper 70.
In the normal display state of this Electronic Paper 70, viewdata signal is input to the data line 71 of this Electronic Paper 70, and is input to pixel electrode by the thin film transistor (TFT) of conducting.At the touch-control state of this Electronic Paper 70, touch scanning signals is input to this data line 71, and namely this touch scanning signals and this viewdata signal stagger input time, and the scope of the magnitude of voltage of this touch scanning signals is-and 15V is to-10V.Extraneous this Electronic Paper 70 of touch-control, capacitance relative by the position of touch-control with this Electronic Paper 70, mutual capacitance that form by this data line 71 with this data line insulation and the touch induction lines 73 that intersects vertically changes.The position of touch of this Electronic Paper 70 of outer bound pair is determined in the variation of the capacitance of this circuit for detecting 75 these mutual capacitance of detecting that are connected with this touch induction lines 73, and the position of the mutual capacitance that changes according to this capacitance.
Compared with prior art, the Electronic Paper 70 of integrated capacitive touch screen of the present invention comprises many touch induction lines 73 that insulate and intersect vertically with this data line 71, touch scanning signals and this viewdata signal stagger the input time on this data line, in the situation that do not affect the normal demonstration of this Electronic Paper 70, Electronic Paper 70 of the present invention does not need additionally to increase structure makes this Electronic Paper 70 have touch controllable function, this Electronic Paper 70 simple in structure.Simultaneously, this Electronic Paper 70 can realize touch controllable function at display surface, and is easy to use.
In the situation that can also consist of without departing from the spirit and scope of the present invention many very embodiment of big difference that have.Should be appreciated that except as defined by the appended claims, the invention is not restricted at the specific embodiment described in instructions.
Claims (20)
1. the Electronic Paper of an integrated capacitive touch screen comprises:
Many the sweep traces that are parallel to each other, the image scanning signal is input to this sweep trace successively, is used for the thin film transistor (TFT) that conducting is connected with sweep trace, and this Electronic Paper also comprises:
Many the touch induction lines that are parallel to each other and intersect with the insulation of this sweep trace respectively;
A plurality of mutual capacitance, each mutual capacitance are formed at every touch induction lines and every sweep trace infall, and this mutual capacitance is used for whether this Electronic Paper of touch-control of the induction external world; And
Be used for the circuit for detecting of the capacitance variation of this mutual capacitance of detecting, this circuit for detecting connects this touch induction lines;
Wherein, touch scanning signals is input to this sweep trace successively, this touch scanning signals is input to the time of this sweep trace and time that this image scanning signal is input to this sweep trace staggers, the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT), when this Electronic Paper of extraneous touch-control, the position of the mutual capacitance that this circuit for detecting detecting capacitance changes is to determine the position of touch of outer this Electronic Paper of bound pair.
2. Electronic Paper as claimed in claim 1 is characterized in that: this Electronic Paper also comprise a thin layer, one and the substrate, of this thin layer opposing parallel setting be arranged between this thin layer and this substrate common electrode layer, near this thin layer one side and be arranged between this thin layer and this substrate tft layer near this substrate one side.
3. Electronic Paper as claimed in claim 2, is characterized in that: this common electrode layer etching is formed this touch induction lines.
4. Electronic Paper as claimed in claim 2, is characterized in that: be provided with microcapsules between this tft layer and this common electrode layer, be filled with color base liquid in these microcapsules, be suspended with the charged particle that is different from this coloured base fluid color in this coloured base fluid.
5. Electronic Paper as claimed in claim 1 is characterized in that: and the scope of the magnitude of voltage of this touch scanning signals is-and 15V is to-10V.
6. Electronic Paper as claimed in claim 1, it is characterized in that: this circuit for detecting comprises a plurality of detecting units, this detecting unit and this touch induction lines connect one to one, and this detecting unit is for the variation of the capacitance of detecting the mutual capacitance that is connected with this touch induction lines.
7. Electronic Paper as claimed in claim 6, it is characterized in that: each detecting unit comprises an amplifier, the electric capacity that is connected in parallel and resistance are connected between the negative-phase input and output terminal of this amplifier, the negative-phase input of this amplifier also connects an end of touch induction lines corresponding to this detecting unit, and the normal phase input end of this amplifier receives common electric voltage.
8. the driving method of the Electronic Paper of an integrated capacitive touch screen, comprise the steps:
The image scanning signal is input to many sweep traces that are parallel to each other of this Electronic Paper successively, is used for the thin film transistor (TFT) that conducting is connected with sweep trace;
Touch scanning signals is input to this sweep trace successively, and this touch scanning signals is input to the time of this sweep trace and time that this image scanning signal is input to this sweep trace staggers, and the voltage of this touch scanning signals is lower than the forward voltage of this thin film transistor (TFT);
Extraneous this Electronic Paper of touch-control is formed at this Electronic Paper and is changed by the capacitance of the mutual capacitance of the corresponding touch induction lines in the position of touch-control and sweep trace infall;
The position of the mutual capacitance that the circuit for detecting detecting capacitance that is connected with this touch induction lines changes is to determine the position of touch of outer this Electronic Paper of bound pair.
9. the driving method of Electronic Paper as claimed in claim 8, is characterized in that: the common electrode layer etching of this Electronic Paper is formed this touch induction lines.
10. the driving method of Electronic Paper as claimed in claim 8 is characterized in that: and the scope of the magnitude of voltage of this touch scanning signals is-and 15V is to-10V.
11. the Electronic Paper of an integrated capacitive touch screen comprises:
Many the data lines that are parallel to each other, viewdata signal is input to this data line, and is input to pixel electrode by the thin film transistor (TFT) of conducting, and this Electronic Paper also comprises:
Many the touch induction lines that are parallel to each other and intersect with the insulation of this data line respectively;
A plurality of mutual capacitance, each mutual capacitance are formed at every touch induction lines and every data line infall, and this mutual capacitance is used for whether this Electronic Paper of touch-control of the induction external world; And
Be used for the circuit for detecting of the capacitance variation of this mutual capacitance of detecting, this circuit for detecting connects this touch induction lines;
Wherein, touch scanning signals is input to this data line, this touch scanning signals is input to the time of this data line and time that this viewdata signal is input to this data line staggers, when this Electronic Paper of extraneous touch-control, the position of the mutual capacitance that this circuit for detecting detecting capacitance changes is to determine the position of touch of outer this Electronic Paper of bound pair.
12. the Electronic Paper as claim 11 is stated is characterized in that: this Electronic Paper also comprise a thin layer, one and the substrate, of this thin layer opposing parallel setting be arranged between this thin layer and this substrate common electrode layer, near this thin layer one side and be arranged between this thin layer and this substrate tft layer near this substrate one side.
13. Electronic Paper as claimed in claim 12 is characterized in that: this common electrode layer etching is formed this touch induction lines.
14. Electronic Paper as claimed in claim 12 is characterized in that: be provided with microcapsules between this tft layer and this common electrode layer, be filled with color base liquid in these microcapsules, be suspended with the charged particle that is different from this coloured base fluid color in this coloured base fluid.
15. Electronic Paper as claimed in claim 11 is characterized in that: the scope of the magnitude of voltage of this touch scanning signals is-15V is to-10V.
16. Electronic Paper as claimed in claim 11, it is characterized in that: this circuit for detecting comprises a plurality of detecting units, this detecting unit and this touch induction lines connect one to one, and this detecting unit is for the variation of the capacitance of detecting the mutual capacitance that is connected with this touch induction lines.
17. Electronic Paper as claimed in claim 16, it is characterized in that: each detecting unit comprises an amplifier, the electric capacity that is connected in parallel and resistance are connected between the negative-phase input and output terminal of this amplifier, the negative-phase input of this amplifier also connects an end of touch induction lines corresponding to this detecting unit, and the normal phase input end of this amplifier receives common electric voltage.
18. the driving method of the Electronic Paper of an integrated capacitive touch screen comprises the steps:
Viewdata signal is input to many data lines that are parallel to each other of this Electronic Paper, and is input to pixel electrode by the thin film transistor (TFT) of conducting;
Touch scanning signals is input to this data line, and this touch scanning signals is input to the time of this data line and time that this viewdata signal is input to this data line staggers;
Extraneous this Electronic Paper of touch-control is formed at this Electronic Paper and is changed by the capacitance of the mutual capacitance of the corresponding touch induction lines in the position of touch-control and data line infall;
The circuit for detecting that is connected with this touch induction lines is detected the position of the mutual capacitance that this capacitance changes, to determine the position of touch of outer this Electronic Paper of bound pair.
19. the driving method of Electronic Paper as claimed in claim 18 is characterized in that: the common electrode layer etching of this Electronic Paper is formed this touch induction lines.
20. the driving method of Electronic Paper as claimed in claim 18 is characterized in that: the scope of the magnitude of voltage of this touch scanning signals is-15V is to-10V.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI581153B (en) * | 2015-11-18 | 2017-05-01 | 奇景光電股份有限公司 | In-cell touch screen and a controller adapted thereto |
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| CN102402358A (en) * | 2011-11-25 | 2012-04-04 | 苏州瀚瑞微电子有限公司 | Touch screen and positioning method |
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| CN103176676B (en) * | 2013-02-28 | 2015-10-14 | 合肥京东方光电科技有限公司 | A kind of touch screen touch point positioning detecting circuit, touch-screen and display device |
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| CN105159516B (en) * | 2015-09-18 | 2018-01-12 | 深圳市华星光电技术有限公司 | Touch-control display panel and touch control display apparatus |
| CN109739391B (en) * | 2019-02-28 | 2022-03-01 | 昆山龙腾光电股份有限公司 | Touch array substrate, manufacturing method and liquid crystal display device |
| CN114299889A (en) * | 2022-01-05 | 2022-04-08 | 苏州清越光电科技股份有限公司 | Touch display method of electronic paper display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI581153B (en) * | 2015-11-18 | 2017-05-01 | 奇景光電股份有限公司 | In-cell touch screen and a controller adapted thereto |
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