CN101131618A - Pixel-multiplexing touch control type flat panel display - Google Patents
Pixel-multiplexing touch control type flat panel display Download PDFInfo
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Abstract
This invention relates to a contact control flat plate display specific in picture element multiplexing contact control flat plate display. When the display and contact control multiplexing display electric pole specially in using the high display capacity display screen electric pole to sense the contact control signal, under the capacitance contact control the coupling capacitance forming by the finger of contact control and the display screen electric pole is small and it is easy to be covered by the other distributed capacitance. This invention adds a contact control signal to the signal electric pole and the contact control signal flows into the display picture element electric pole with the scanning signal in line step by step and couples the display picture element electric pole of the active flat plate display and it can enhance the coupling ability between the display screen electric pole and the contact control object and locates the contact control by the location of the display picture element.
Description
Technical field
The present invention relates to touch control type flat-panel display, be specifically related to pixel-multiplexing touch control type flat panel display.
Background technology
The flat-panel monitor that has touch controllable function at present constitutes with parts such as display screen, display driver, touch screen, touching signals detecting device, backlights, touch screen has resistance-type, condenser type, electromagnetic type, ultrasonic type and the photo-electric etc. of using different sensing principles, and display screen has TN/STN LCDs, TFT LCDs, OLED display screen, PDP display screen, CNT display screen etc.The flat-panel monitor that has touch screen is that the touch screen of split and display screen is stacked together, detects the planimetric position of touch point by display screen, makes the cursor on the display screen follow the location, touch point again.The stacked touch control type flat-panel display thickening that makes of touch screen and display screen becomes heavy cost increase; When touch screen placed the display screen front, the reflection that the touch screen sensing electrode produces can make that again demonstration is inhomogeneous and show decrease of contrast under strong ambient light environment, influences display effect.Trackpad and display screen being become one, make the flat-panel monitor with touch controllable function become more frivolous, is the direction that people make great efforts.
The integration mode of display screen and Trackpad is mainly stacked and inserted two kinds, stacked is to place Trackpad before the end face of display screen or after the bottom surface, display screen and Trackpad are independently born respectively and are shown and the touch-control task, Chinese patent (CN20010141451, MINXIANG INDUSTRY CO LTD, 2001), Finnish patent (FI19960002692, NOKIA MOBILE PHONES LTD, 1996), Jap.P. (JP19850161986, CANON KK, 1985), (JP19900095167, NIPPONTELEGRAPH﹠amp; TELEPHONE, 1990), (JP19930306286, PFU LTD, 1993), (JP19980014850, NISSHA PRINTING, 1998), (JP19990142260, MIMAKIDENSHI BUHIN KK, 1999), Korean Patent (KR20000084115, YU HWAN SEONG; LIM JOO-SOO, 2000), (KR20020083301, BANG YONGIK; Etc., 2002), Taiwan patent (TW556141, AU OPTRONICS CORP, 2002), United States Patent (USP) (US6215476, APPLE COMPUTER, 2001), (US20030347603, TOPPOLY OPTOELECTRONICSCORP, 2003) etc. multinomial patent has all proposed resistance-type, condenser type, the Trackpad of electromagnetic type and the various stacked scheme of display screen, but Trackpad places before the display screen end face, can influence the display effect such as brightness, contrast, sharpness, color of demonstration; The electromagnetic touch-control plate places after the display screen bottom surface, makes the contraposition difficulty of touchpad electrodes and display screen electrode, also can influence the brightness of demonstration; And stacked method also can increase the integral thickness of display; The complexity of structure can cause reliability decrease again, and by the complexity of the complexity of production run and assembling also to making cost higher.
Inserted is that touch sensing is embedded in the display screen, at the other sensor (mostly being optical sensor) of settling of each display element, connect display element and sensor with dual electrode, difference transmitting and displaying drive signal and touch-control detectable signal, Korean Patent (KR20030019631, JUNG YONG CHAE; YANG DONG KYU, 2003), (KR20030077574, CHOI JOON-HOO; JOO IN-SOO, 2003), Deutsche Bundespatent (GB0304587.9, SHARP, 2003), United States Patent (USP) (US19970955388, SONY ELECTRONICS INC, 1997), (US19980135959, IBM, 1998), (US20030721129, EASTMAN KODAK CO, 2003) etc. multinomial patent has also proposed inserted scheme respectively, but touch sensing is inlaid into the manufacturing process complexity of display screen and dual electrode, the electrode outlet line difficulty, thereby also to making the cost height, and also may produce the mutual interference mutually of display drive signals and touch-control detectable signal.
Also the someone attempts to survey touch-control by the method for electric capacity between the box of surveying LCDs, as Taiwan patent (TW20020116058, LEE YU-TUAN, 2002), changes in capacitance is to cause that by touch-control pressure the thick variation of box produces between box, support between box makes the very big strength of the thick needs of the box that must change LCDs, and the box that changes LCDs is thick must influence demonstration, the dielectric anisotropy of liquid crystal material makes that again electric capacity changes with showing between box, get rid of that changes in capacitance can influence demonstration again between the box that the liquid crystal material dielectric anisotropy causes, so the method that electric capacity is surveyed touch-control between the box of this detection LCDs is worthless.
Find out a kind of scheme that solves above-mentioned complex structure, the manufacturing process difficulty is big, production run is complicated and assembles challenge, improve reliability, improve display effect, compressed thickness, reduce cost, realize that with succinct method the flat-panel monitor touch controllable function is necessary.
Application number is that 200510080825X, patents such as 2005100861285 and 2006100548064 have proposed to utilize display screen line scan electrode and column signal electrode as touch-control electrode senses touch-control, or the timesharing of display screen electrode is communicated with display driver circuit and touch-control circuit by analog switch, or display drive signals and touch-control detectable signal are input on the display screen electrode simultaneously by the signal loading circuit, allow the display screen electrode not only transmit display drive signals, also sensing and transmit the touch-control detectable signal.Under the capacitance touching control mode, the leakage current that senses formed coupling capacitance between touch-control finger and display screen electrode and flow out, thereby definite position of touch from this electric capacity.Need not in display screen increases any sensor, allows panel display screen have the ability of perception touch-control.
But with display screen electrode senses and transmission touching signals, particularly use the display screen electrode senses touching signals of the high capacity of display, because the display screen electrode is very thin, under the capacitance touching control mode, formed coupling capacitance is little between the finger of touch-control and display screen electrode, is covered by other distributed capacitance easily or disturbed by display drive signals.
Summary of the invention
The present invention aims to provide a kind of touch control type active flat-panel monitor, and display element electrode and touch control object coupling with flat panel displays strengthen the coupling ability between display screen electrode and the touch control object, and with display element location positioning touch-control.
Technical thought of the present invention is: allow the multiplexing display element electrode of display drive signals and touch-control detectable signal.Have TFT and display element array on a slice base plate glass as flat panel displays display screens such as TFT-LCD, with the scan electrode that links to each other with the grid of TFT, the signal electrode that links to each other with source electrode or the drain electrode of TFT; Have color filter film, latticed light black film layer and a public electrode covered and another plate base of display screen is on glass.When display screen enters the display driver state, display screen electrodes transfer display drive signals.When display screen entered touch-control detection attitude, along with sweep signal moving on scan electrode, sweep signal entered the TFT grid, and tft array is opened line by line, and source electrode and the drain electrode of TFT are conducted; Add touching signals on signal electrode, touching signals flows into the display element electrode line by line with sweep signal; When finger or touch control object such as pointer during near display screen, produce coupling capacitance between part display element electrode and touch control object, touch control object and display element electrode produce electromagnetic coupled by coupling capacitance, and touching signals from then on partial-pixel electrode Vent spills; Leak by the Vent that detects touching signals, capable with scanning sequence or scanning encoding location touch-control, to detect the column signal positioning of electrode touch-control row that touching signals Vent leaks, determine the touch-control anchor point with the touch-control ranks of two intersections.
Technical solution of the present invention is: the line scanning electrode of display screen connects line-scan circuit, and the column signal electrode connects display driver circuit, and the column signal electrode also connects the touch-control detection circuit.Electric signal output to display screen is divided into demonstration and touch-control two frames, at display frame, line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, with the line scanning display driver circuit column signal electrode is exported display drive signals line by line, display drive signals flows into the display element electrode by TFT, drives pixel and shows.At the touch-control frame, display driver circuit stops column signal electrode output display drive signals, line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, the touch-control detection circuit is with line scanning, and to column signal electrode output AC touching signals line by line, touching signals flows into the display element electrode by TFT; When finger or touch control object such as pointer during near display screen, produce coupling capacitance between part display element electrode and touch control object, the touching signals on the display element electrode spills from display element electrode Vent; The Vent that the touch-control detection circuit detects touching signals leaks, touching signals Vent leaks scanning sequence constantly or scanning encoding location touch-control is capable to detect, to detect the column signal positioning of electrode touch-control row that touching signals Vent leaks, determine the touch-control anchor point with the touch-control ranks of two intersections.
In the column signal electrode connects display driver circuit and is connected touch-control detection circuit way, analog switch can be set, switch the connected relation of column signal electrode and display driver circuit and touch-control detection circuit by analog switch; The column signal electrode also can be directly and being connected of display driver circuit and touch-control detection circuit, and by the output period of control display driver circuit and touch-control detection circuit, switches the transmission on the column signal electrode of display drive signals and touching signals.
The touch-control detection circuit can be in the line frequency of line-scan circuit to the scanning of line scanning electrode, pursues row or exports touching signals by part rows to the column signal electrode with scan mode, and detect the Vent leakage of touching signals; Also can be in line frequency, the touch-control detection circuit be exported touching signals to each column signal electrode simultaneously with multiport, and detects the Vent leakage of touching signals.
Another solution is: the line scanning electrode of display screen connects line-scan circuit, and the column signal electrode connects display driver circuit and touch-control detection circuit by the signal loading circuit.Line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, and with the line scanning display driver circuit column signal electrode are exported display drive signals line by line, and simultaneously the touch-control detection circuit is also to column signal electrode output AC touching signals line by line; The feature of display drive signals and touching signals different (as frequency or codings), the signal loading circuit synthesizes composite signal with display drive signals and touching signals, flows into the display element electrode by TFT; The display drive signals of composite signal partly drives pixel and shows, the touching signals of composite signal partly is used for touch-control and surveys; When finger or touch control object such as pointer during near display screen, produce coupling capacitance between part display element electrode and touch control object, the touching signals part of the composite signal on the display element electrode spills from display element electrode Vent; The Vent that the touch-control detection circuit detects touching signals leaks, touching signals Vent leaks scanning sequence constantly or scanning encoding location touch-control is capable to detect, to detect the column signal positioning of electrode touch-control row that touching signals Vent leaks, determine the touch-control anchor point with the touch-control ranks of two intersections.
The touch-control detection circuit can be in the line frequency of line-scan circuit to the scanning of line scanning electrode, exports touching signals by the signal loading circuit to the column signal electrode with scan mode, and detects the Vent leakage of touching signals; Also can be in line frequency, the touch-control detection circuit be exported touching signals to each column signal electrode with multiport simultaneously by the signal loading circuit, and detects the Vent leakage of touching signals.
A solution is again: the line scanning electrode of display screen connects line-scan circuit, the column signal electrode connects display driver circuit, touching signals detecting electrode and column signal electrode crossing, be coupled in point of crossing and each column signal electrode, the two ends of touching signals detecting electrode all connect the touch-control detection circuit.Electric signal output to display screen is divided into demonstration and touch-control two frames, at display frame, line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, with the line scanning display driver circuit column signal electrode is exported display drive signals line by line, display drive signals flows into the display element electrode by TFT, drives pixel and shows.At the touch-control frame, display driver circuit stops column signal electrode output display drive signals, the touch-control detection circuit is to touching signals detecting electrode output AC touching signals, line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, and the touching signals on the touch-control detection circuit flows into the column signal electrode by the cross-couplings with the column signal electrode, flows into the display element electrode by TFT again; When finger or touch control object such as pointer during near display screen, produce coupling capacitance between part display element electrode and touch control object, the touching signals on the display element electrode spills from display element electrode Vent; Flow into of the contribution of the touching signals at touch detection electrodes two ends, be inversely proportional to touch detection electrodes two end distances and connect the distance that Vent leaks touching signals display element column signal electrode the touching signals of Vent leakage; The Vent that the touch-control detection circuit detects touching signals leaks, touching signals Vent leaks scanning sequence constantly or scanning encoding location touch-control is capable to detect, with the difference location touch-control row of the touching signals that flows into the touch detection electrodes two ends, determine the touch-control anchor point with the touch-control ranks of two intersections.
A solution is again again: the line scanning electrode of display screen connects line-scan circuit, the column signal electrode connects display driver circuit, touching signals detecting electrode and column signal electrode crossing, be coupled in point of crossing and each column signal electrode, the two ends of touching signals detecting electrode all connect the touch-control detection circuit.Line-scan circuit scans the line scanning electrode, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, with the line scanning display driver circuit column signal electrode is exported display drive signals line by line, the touch-control detection circuit is to touching signals detecting electrode output AC touching signals simultaneously, touching signals has the feature different with display drive signals (as frequency or coding), touching signals is loaded into and synthesizes composite signal on the display drive signals by the cross-couplings of touch-control detection circuit and column signal electrode; The display drive signals of composite signal partly drives pixel and shows, the touching signals of composite signal partly is used for touch-control and surveys; When finger or touch control object such as pointer during near display screen, produce coupling capacitance between part display element electrode and touch control object, the touching signals part of the composite signal on the display element electrode spills from display element electrode Vent; Flow into of the contribution of the touching signals at touch detection electrodes two ends, be inversely proportional to touch detection electrodes two end distances and connect the distance that Vent leaks touching signals display element column signal electrode the touching signals of Vent leakage; The Vent that the touch-control detection circuit detects touching signals leaks, touching signals Vent leaks scanning sequence constantly or scanning encoding location touch-control is capable to detect, with the difference location touch-control row of the touching signals that flows into the touch detection electrodes two ends, determine the touch-control anchor point with the touch-control ranks of two intersections.
In the two kinds of schemes in back with the touching signals detecting electrode of column signal electrode crossing, can prepare in the viewing area in the panel display screen box, also can prepare outside the viewing area in the panel display screen box, also the line that can be arranged on the panel display screen goes out end regions, also can be arranged on the outer drive plate of panel display screen.
Above in four solutions, display drive signals and touching signals can be from the single-ended accesses of column signal electrode to the access way of column signal electrode; Also the column signal electrode all can be drawn exit from two ends, allow display driver circuit be connected the column signal electrode from the both sides exit respectively with the touch-control detection circuit.Between display driver circuit and touch-control detection circuit and column signal electrode, can be direct connection, also can be to connect by analog switch, also can be to connect by signal coupling circuit or signal loading circuit.
Brief Description Of Drawings
Fig. 1 is a kind of touch TFT-LCD of time division multiplex display element electrode.
Fig. 2 is a kind of touch TFT-LCD of frequency division multiplexing display element electrode.
Fig. 3 is a kind of and the touch detection electrodes column signal electrode crossing, multiplexing display element electrode touch TFT-LCD.
Embodiment
One of embodiments of the invention are as shown in Figure 1: a kind of touch TFT-LCD 100 of time division multiplex display element electrode.TFT-LCD 100 is made up of LCDs 110, display driver circuit 120 and 130, touch-control detection circuit 140, control system 150.The tft array substrate of LCDs 110 is on glass N bar line scanning electrode wires 111 and a M bar column signal electrode wires 112, and M bar column signal electrode wires 112 all has exit from the base plate glass both sides; Line scanning electrode wires 111 and column signal electrode wires 112 are passed through TFT, connection display element electrode 11 ..., ij ..., NM.One end of the M bar column signal electrode wires 112 of LCDs 110 connects display driver circuit 130; The other end of M bar column signal electrode wires 112 connects touch-control detection circuit 140.Electric signal output to display screen is divided into demonstration and touch-control two frames, and in display frame, touch-control detection circuit 140 stops to output of display screen electrode and sampling touching signals; Display driver circuit 120 is to N bar line scanning electrode wires 111 output scanning signals, and display driver circuit 130 to M bar column signal electrode wires 112 output display drive signals, drives display element and shows line by line with line scanning.In the touch-control frame, 130 stop to display screen electrode output display drive signals; Display driver circuit 120 is still to N bar line scanning electrode wires 111 output scanning signals, and touch-control detection circuit 140 is exported touching signals to each column signal electrode wires of 112 line by line simultaneously with line scanning; When the finger 160 of touch-control touches LCDs 110, the display element electrode that links to each other with the capable j row of i electrode wires produces coupling capacitance, line scan signals is opened all TFT of this journey, when making the capable display element electrode of i connect separately the column signal electrode, the touching signals that outputs on the j column signal electrode wires imports coupled display element electrode into, touching signals on the display element electrode spills from touch control object Vent, and the Vent that makes the touch-control detection circuit 140 that links to each other with j column signal electrode wires detect touching signals leaks.To detect the column signal electrode wires that touching signals Vent leaks, location row touch-control electrode; With the line scanning electrode wires of line scanning position this moment, home row touch-control electrode; Position of touch is determined in position by ranks touch-control electrode.
Embodiments of the invention two as shown in Figure 2: a kind of touch TFT-LCD 200 of frequency division multiplexing display element electrode.TFT-LCD 200 is made up of LCDs 210, display driver circuit 220 and 230, touch-control detection circuit 240, signal loading circuit 250, control system 260.The tft array substrate of LCDs 210 is on glass N bar line scanning electrode wires 211 and a M bar column signal electrode wires 212, and M bar column signal electrode wires 212 all has exit from the base plate glass both sides; Line scanning electrode wires 211 and column signal electrode wires 212 are passed through TFT, connection display element electrode 11 ..., ij ..., NM.One end of the M bar column signal electrode wires 212 of LCDs 210 connects display driver circuit 230; The other end of M bar column signal electrode wires 212 connects touch-control detection circuit 240.Display driver circuit 220 is to N bar line scanning electrode wires 211 output scanning signals, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, export display drive signals line by line with 230 pairs of column signal electrodes 212 of line scanning display driver circuit, display drive signals flows into the display element electrode by TFT, drives pixel and shows; Equally along with line scanning, and be expert at and scan in the period of each row, touch-control detection circuit 240 is with the side of scanning, by signal loading circuit 250, export touching signals by row or by part rows to column signal electrode 212, the frequency of touching signals is far above the frequency of display drive signals, and touching signals also flows into the display element electrode by TFT; When the finger 270 of touch-control touches LCDs 210, the display element electrode that links to each other with the capable j row of i electrode wires produces coupling capacitance, line scan signals is opened capable all TFT of i, when making the logical column signal electrode separately of the capable display element electrode Jie of i, the touching signals that outputs on the j column signal electrode wires imports coupled display element electrode into, touching signals on the display element electrode spills from touch control object Vent, makes to scan the Vent leakage that the touch-control detection circuit 240 that links to each other with j column signal electrode wires detects touching signals.To detect the column signal electrode wires that touching signals Vent leaks, location row touch-control electrode; With the line scanning electrode wires of line scanning position this moment, home row touch-control electrode; Position of touch is determined in position by ranks touch-control electrode.
Embodiments of the invention three as shown in Figure 3: a kind of touch detection electrodes of and column signal electrode crossing, the touch TFT-LCD 300 of multiplexing display element electrode.TFT-LCD 300 is made up of LCDs 310, display driver circuit 320 and 330, touching signals detecting electrode 340, touch-control detection circuit 350, control system 360.The tft array substrate of LCDs 310 is on glass N bar line scanning electrode wires 311 and a M bar column signal electrode wires 312, and line scanning electrode wires 311 and column signal electrode wires 312 be by TFT, connect display element electrode 11 ..., ij ..., NM.Touching signals detecting electrode 340 is positioned at the exit of column signal electrode wires 312, intersects with M bar column signal electrode wires 312, and there are exit 341 and 342 in both sides, and exit 341 all is connected touch-control detection circuit 350 with 342.Display driver circuit 320 is to N bar line scanning electrode wires 311 output scanning signals, tft array is opened line by line, source electrode and the drain electrode of TFT are conducted, export display drive signals line by line with 330 pairs of column signal electrodes 312 of line scanning display driver circuit, display drive signals flows into the display element electrode by TFT, drives pixel and shows; The exit 341 of 350 pairs of touching signals detecting electrodes 340 of touch-control detection circuit and 342 output touching signals, the frequency of touching signals is far above the frequency of display drive signals, equally along with the line scanning touching signals also flows into the display element electrode by TFT line by line; When the finger 370 of touch-control touches LCDs 310, the display element electrode that links to each other with the capable j row of i electrode wires produces coupling capacitance, line scan signals is opened capable all TFT of i, when making the logical column signal electrode separately of the capable display element electrode Jie of i, the touching signals that outputs on the j column signal electrode wires from touching signals detecting electrode 340 two ends imports coupled display element electrode into, touching signals on the display element electrode spills from touch control object Vent, and touch-control detection circuit 350 detects the difference that flows into touching signals detecting electrode 340 two ends 341 and 342 touching signals.The line scanning electrode wires of line scanning position when leaking to detect touching signals Vent, home row touch-control electrode; With the difference of the touching signals that flows into the touch detection electrodes two ends, location row touch-control electrode; Position of touch is determined in position by ranks touch-control electrode.
The above embodiments are not represented all possible embodiment, and other deformation program also should be protection scope of the present invention.
Claims (10)
1. touch control type active flat-panel monitor, the active panel display screen tft array substrate is on glass, has the line scanning electrode wires that links to each other with the grid of TFT, the column signal electrode wires that links to each other with source electrode or the drain electrode of TFT, display element electrode etc., the line scanning electrode connects line-scan circuit, the column signal electrode connects display driver circuit, it is characterized in that: line-scan circuit scans the line scanning electrode, the touch-control detection circuit is with line scanning, by the column signal electrode line by line to display element electrode output AC touching signals, the touch-control detection circuit detects the touching signals of touch control object and display element electrode coupling Vent leakage, to detect the column signal electrode wires location row touch-control electrode that touching signals Vent leaks, with the line scanning electrode wires home row touch-control electrode of line scanning position this moment, determine position of touch by the position of ranks touch-control electrode.
2. touch control type active flat-panel monitor according to claim 1, it is characterized in that: the touch-control detection circuit connects the column signal electrode by analog switch, the electric signal transmission of display screen electrode is divided into and shows and touch-control two frames, at display frame, analog switch disconnects touch-control detection circuit and column signal electrode, line-scan circuit scans the line scanning electrode, and display driver circuit is exported display drive signals with line scanning line by line to the column signal electrode and imported the display element electrode into; At the touch-control frame, display driver circuit stops column signal electrode output display drive signals, analog switch makes the touch-control detection circuit be communicated with the column signal electrode, line-scan circuit scans the line scanning electrode, the touch-control detection circuit is exported touching signals to the display element electrode with line scanning line by line by the column signal electrode.
3. touch control type active flat-panel monitor according to claim 1, it is characterized in that: the column signal electrode connects display driver circuit and touch-control detection circuit by the signal loading circuit, line-scan circuit scans the line scanning electrode, and display driver circuit is exported display drive signals with line scanning line by line to the column signal electrode and imported the display element electrode into; Line scanning is in the period of each row, and to each column signal electrode output touching signals different with the display drive signals feature, touching signals is loaded into and imports the display element electrode signal on the display drive signals into the touch-control detection circuit by the signal loading circuit.
4. signal loading circuit according to claim 3 is characterized in that: the signal loading circuit is that an end connects the touch-control detection circuit, and an end connects the capacitor of display driver circuit.
5. according to claim 2 or 3 described touch control type active flat-panel monitors, it is characterized in that: the touch-control detection circuit exports and detects touching signals with scan mode to each column signal electrode.
6. according to claim 2 or 3 described touch control type active flat-panel monitors, it is characterized in that: the touch-control detection circuit is simultaneously to each column signal electrode output and detection touching signals.
7. touch control type active flat-panel monitor, the active panel display screen tft array substrate is on glass, has the line scanning electrode wires that links to each other with the grid of TFT, the column signal electrode wires that links to each other with source electrode or the drain electrode of TFT, display element electrode etc., the line scanning electrode connects line-scan circuit, the column signal electrode connects display driver circuit, it is characterized in that: touching signals detecting electrode and column signal electrode crossing, the two ends of touching signals detecting electrode all connect the touch-control detection circuit, line-scan circuit scans the line scanning electrode, the touch-control detection circuit is to touching signals detecting electrode two ends output touching signals, touching signals flows into the column signal electrode at the touch-control detection circuit by the cross-couplings with the column signal electrode, import the display element electrode line by line into by TFT, the touch-control detection circuit detects the touching signals of touch control object and display element electrode coupling Vent leakage, to detect the difference location row touch-control electrode of the touching signals that flows into the touch detection electrodes two ends, with the line scanning electrode wires home row touch-control electrode of line scanning position this moment, determine position of touch by the position of ranks touch-control electrode.
8. touch control type active flat-panel monitor according to claim 7, it is characterized in that: the electric signal transmission of display screen electrode is divided into and shows and touch-control two frames, at display frame, the touch-control detection circuit stops column signal electrode output touching signals, line-scan circuit scans the line scanning electrode, and display driver circuit is exported display drive signals with line scanning line by line to the column signal electrode and imported the display element electrode into; At the touch-control frame, display driver circuit stops column signal electrode output display drive signals, and line-scan circuit scans the line scanning electrode, and the touch-control detection circuit is to touching signals detecting electrode two ends output touching signals.
9. touch control type active flat-panel monitor according to claim 7, it is characterized in that: line-scan circuit scans the line scanning electrode, display driver circuit is exported display drive signals with line scanning line by line to the column signal electrode, and the touch-control detection circuit is to the touching signals detecting electrode output touching signals different with the display drive signals feature simultaneously.
10. touching signals detecting electrode according to claim 7 is characterized in that: with the place that the touching signals detecting electrode is arranged on the panel display screen and panel display screen is outer of column signal electrode crossing.
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| CNA2006101151076A CN101131618A (en) | 2006-08-20 | 2006-08-20 | Pixel-multiplexing touch control type flat panel display |
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| CN101893955A (en) * | 2009-05-18 | 2010-11-24 | 索尼公司 | Display device and electronic unit |
| WO2011017891A1 (en) * | 2009-08-12 | 2011-02-17 | 智点科技有限公司 | Active touch control system |
| CN102062964A (en) * | 2009-11-18 | 2011-05-18 | 乐金显示有限公司 | Liquid crystal display device |
| CN102169380A (en) * | 2010-02-26 | 2011-08-31 | 联咏科技股份有限公司 | Touch sensing method and device and touch display device |
| CN101598993B (en) * | 2008-06-03 | 2012-04-18 | 奇景光电股份有限公司 | Touch panel |
| WO2013056472A1 (en) * | 2011-10-21 | 2013-04-25 | 智点科技（深圳）有限公司 | Drive method for active touch control system |
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| CN101598993B (en) * | 2008-06-03 | 2012-04-18 | 奇景光电股份有限公司 | Touch panel |
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Application publication date: 20080227 |