CN101694551B - Plane display, touch control device and touch control detection method - Google Patents
Plane display, touch control device and touch control detection method Download PDFInfo
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Abstract
The invention discloses a plane display, a touch control device and a touch control detection method. The touch control device is arranged on a substrate provided with a plurality of scanning lines and comprises a plurality of reading lines and a plurality of sensing elements, the reading lines and the scanning lines are arranged in a mutual crossing way, and the sensing elements are respectively in electrical coupling with a corresponding scanning line and a corresponding reading line, wherein scanning signals are sequentially led into the scanning lines to control whether the sensing elements are started or not, the scanning signals comprise at least one first opening signal and a second opening signal so as to simultaneously start at least two sensing elements, and at least two sensing elements which are simultaneously started are in electrical coupling with different scanning lines. The invention ensures that the scanning signals are provided with at least one first opening signal and the second opening signal by regulating the scanning signals in the scanning lines so as to simultaneously start different sensing elements which are in electrical coupling with different scanning lines, thereby enhancing the density of the sensing elements and promoting the touch control detection capacity without increasing the storage capacity of a detection circuit.
Description
Technical field
The invention relates to the touch control detection field, and particularly relevant for a kind of flat-panel screens, contactor control device and corresponding touch control detecting method 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 advantages of wide application range; And be widely used in mobile phone, mobile computer, desktop display device and TV or the like various consumption electronic products, and replaced traditional CRT display gradually and become the main flow of display device.
Contactor control device provides a kind of interface of new human-computer interaction, its in the use more intuition, more meet human nature.And contactor control device and flat-panel screens are combined, make flat-panel screens have touch controllable function, be a kind of trend of flat-panel screens development.
See also Fig. 1 and Fig. 2, wherein Fig. 1 shows a kind of existing synoptic diagram with flat-panel screens of touch controllable function, and Fig. 2 shows the sequential chart of the sweep signal of flat-panel screens shown in Figure 1.Flat-panel screens 10 for example is a LCD, comprises thin film transistor (TFT) (TFT) substrate 11, colored filter (CF) substrate (figure do not show) relative with thin film transistor base plate 11 and is folded in the liquid crystal layer (figure does not show) between two substrates.In addition, flat-panel screens 10 also further comprises sweep trace s (n-4)～s (n+4), data line d (n-4)～d (n+4), pixel transistor 12, pixel electrode 13, sensing element 15 and read line r (the n-1)～r (n+1) that is arranged on the thin film transistor base plate 11.
Wherein, sweep trace s (n-4)～s (n+4) and data line d (n-4)～d (n+4) thus arranged in a crossed manner each other flat-panel screens 10 is divided into a plurality of pixel regions (indicating).Each pixel region is provided with a pixel transistor 12 and a pixel electrode 13 respectively; And each pixel transistor 12 is electrically coupled to a corresponding person and the corresponding person among data d (n-4)～d (n+4) among sweep trace s (n-4)～s (n+4) respectively, and each pixel electrode 13 is electrically coupled to a corresponding pixel transistor 12 respectively.In sweep trace s (n-4)～s (n+4), feed sweep signal Scan_1 successively and control and whether conducting of the pixel transistor of sweep trace s (n-4)～s (n+4) electric property coupling 12; Wherein, Sweep signal Scan_1 comprises a start signal display respectively, with the pixel transistor 12 of conducting and sweep trace s (n-4)～s (n+4) electric property coupling successively.That is to say; When the start signal display among the sweep signal Scan_1 feeds sweep trace s (n-4)～s (n+4) successively; With pixel transistor 12 conductings successively respectively of sweep trace s (n-4)～s (n+4) electric property coupling, thereby can the data-signal among data line d (n-4)～d (n+4) be passed to corresponding pixel electrode 13 so that flat-panel screens 10 display frames.
In addition, sensing element 15 is distributed on the thin film transistor base plate 11, and each sensing element 15 can correspond respectively at least one pixel region.For example in flat-panel screens shown in Figure 1 10; Each sensing element 15 corresponds respectively to 4X4 pixel region A; Promptly whenever at a distance from 4 sweep traces and 4 data lines a sensing element 15 is set, sensing element 15 is electrically coupled to sweep trace s (n-4), sn, s (n+4) and read line r (n-1), rn, r (n+1) respectively.When the start signal display among the sweep signal Scan_1 feeds among sweep trace s (n-4), sn, the s (n+4) successively; Open successively with the sensing element 15 of sweep trace s (n-4), sn, s (n+4) electric property coupling, whether be touched and produce the corresponding sensing signal thereby can detect its corresponding region.Through read line r (n-1), rn, r (n+1) sensing element 15 is detected in sensing signal transmission to a testing circuit 17 that produces then, and be stored in the testing circuit 17.
Therefore, the number that is stored in the sensing signal in the testing circuit 17 by be arranged at sensing element 15 in the flat-panel screens 10 density determined, and the density of sensing element 15 is relevant with the resolution of flat-panel screens 10.For instance; If the resolution of flat-panel screens 10 is 240X320 (thereby being that flat-panel screens 10 comprises that 240 data lines and 320 sweep traces are divided into 240X320 pixel region with flat-panel screens 10); Then the density of sensing element 15 is 60X80; And after single pass, the number of the sensing signal that testing circuit 17 is stored also is 60X80.
Yet because each sensing element 15 pairing 4X4 pixel region A is bigger, the density that is distributed in the sensing element 15 on the thin film transistor base plate 11 is not high enough; Therefore; If the zone that the user touched, area B for example is when its pairing sensing element 15 (n-4) is distant; Then whether sensing element 15 (n-4) is not easy to detect this 4X4 pixel region A and is touched, and flat-panel screens 10 its touch control detection abilities are lower.And in order to improve the touch control detection ability of flat-panel screens 10; Just need to increase sensing element 15 numbers; Improve the density of sensing element 15, therefore, the number of the sensing signal that testing circuit 17 is stored also needs correspondingly to increase; It need correspondingly increase the storage volume of testing circuit 17, promotes the storage capacity of testing circuit 17.Yet the storage capacity that promotes testing circuit 17 considerably is difficult for, and therefore also just can not increase the number of sensing element 15 in large quantities, and the lifting of the touch control detection ability of flat-panel screens 10 is also more limited.
Summary of the invention
The object of the invention is exactly that a kind of flat-panel screens with touch controllable function is being provided, and it can promote the touch control detection ability of flat-panel screens on the basis of the storage volume that does not increase testing circuit.
A purpose more of the present invention provides a kind of contactor control device, and it promotes its touch control detection ability on the basis of the storage volume that does not increase testing circuit.
Another purpose of the present invention provides a kind of touch control detecting method, and it can promote its detectability on the basis of the storage volume that does not increase testing circuit.
The present invention proposes a kind of flat-panel screens with touch controllable function, and it comprises multi-strip scanning line, many data lines, a plurality of pixel transistor, a plurality of pixel electrode, many read lines and a plurality of sensing elements.Thereby data line and sweep trace are arranged in a crossed manner each other flat-panel screens is divided into a plurality of pixel regions.Pixel transistor is arranged in the pixel region respectively and is electrically coupled to corresponding scanning line and data line respectively, and pixel electrode is arranged at respectively in the pixel region, and each pixel electrode is electrically coupled to corresponding pixel transistor respectively.Read line and sweep trace are arranged in a crossed manner each other, and sensing element is electrically coupled to corresponding scanning line and read line respectively.Wherein, in sweep trace, feed sweep signal successively and whether open, and sweep signal comprises that at least one first start signal and one second start signal are to open at least two sensing elements simultaneously with the control sensing element.At least two sensing elements that above-mentioned quilt is opened simultaneously and different scanning line be electric property coupling mutually.Said flat-panel screens also utilizes said these read lines that said these sensing elements are charged to a predetermined voltage; Said flat-panel screens further comprises: a testing circuit is electrically coupled to said these read lines to read the sensing signal that said these sensing elements are produced.
The present invention also proposes a kind of contactor control device, and it is arranged on the substrate with multi-strip scanning line.Above-mentioned contactor control device comprises many read lines and a plurality of sensing element.Read line and sweep trace are arranged in a crossed manner each other, and sensing element is electrically coupled to corresponding scanning line and read line respectively.Wherein, Whether in sweep trace, feed sweep signal successively opens with the control sensing element; And sweep signal comprises at least one first start signal and one second start signal opening at least two sensing elements simultaneously, and at least two sensing elements being opened simultaneously and different scanning line electric property coupling mutually.Above-mentioned flat-panel screens and contactor control device more utilize read line that sensing element is charged to a predetermined voltage.Above-mentioned flat-panel screens and contactor control device comprise that further the testing circuit of electric property coupling read line is to read the sensing signal that sensing element is produced.
In preferred embodiment of the present invention, and when in sweep trace, feeding second start signal successively, make flat-panel screens display frame thereby utilize data line that data-signal is passed to corresponding pixel electrode.
The present invention proposes a kind of touch control detecting method in addition, and it is applicable to above-mentioned contactor control device.Whether above-mentioned touch control detecting method: in sweep trace, feed sweep signal successively and open with the control sensing element, wherein sweep signal comprises that at least one first start signal and one second unlatching are with the different sensing elements of unlatching simultaneously with different scanning line electric property coupling if comprising; And detect the sensing signal of opening simultaneously that different sensing element produced and operate to have judged whether touching; Said contactor control device comprises that further one is electrically coupled to the testing circuit of said many read lines, and the sensing signal that different sensing element produced opened simultaneously of aforementioned detection comprises with the step that judges whether the touching operation: read the sensing signal that said these sensing elements were produced that said these read lines are transmitted and said these sensing signals are stored in the said testing circuit; And judge that according to said these sensing signals said these sensing elements are whether by touching and relevant touch position; Further comprise: utilize said these read lines that said these sensing elements are charged to a predetermined voltage.
In sum; Flat-panel screens, contactor control device and touch control detecting method with touch controllable function of the present invention makes sweep signal have at least one first start signal and one second start signal through the sweep signal in the adjustment sweep trace; With the different sensing elements of unlatching simultaneously with different scanning line electric property coupling; Thereby can be on the basis of the storage volume that does not increase testing circuit, the density that improves sensing element is to promote the touch control detection ability.
For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs., elaborates as follows.
Description of drawings
Fig. 1 illustrates existing synoptic diagram with flat-panel screens of touch controllable function;
Fig. 2 illustrates the sequential chart of the sweep signal of flat-panel screens shown in Figure 1;
A kind of synoptic diagram that the one embodiment of the invention that illustrates Fig. 3 discloses with flat-panel screens of touch controllable function;
Fig. 4 illustrates the sequential chart of the sweep signal of flat-panel screens shown in Figure 3;
The process flow diagram of a kind of touch control detecting method that the one embodiment of the invention that illustrates Fig. 5 discloses.
Drawing reference numeral
10,100: flat-panel screens
11,110: thin film transistor base plate
12,112: pixel transistor
13,113: pixel electrode 15,15 (n-4), 115,115 (n-4), 115 (n-2): sensing element
17,120: testing circuit
S (n-4)～s (n+4), S (n-4)～S (n+4): sweep trace
D (n-4)～d (n+4), D (n-4)～D (n+4): data line
R (n-1)～r (n+1), R (n-1)～R (n+1): read line
Scan_1, Scan_2: sweep signal
Pre-charge: first start signal
Display: second start signal
A:4X4 pixel region
B: the zone that the user touched
Embodiment
See also Fig. 3 and Fig. 4, wherein Fig. 3 shows a kind of synoptic diagram with flat-panel screens of touch controllable function that one embodiment of the invention discloses, and Fig. 4 shows the sequential chart of the sweep signal of flat-panel screens shown in Figure 3.The flat-panel screens 100 that the embodiment of the invention disclosed is similar with flat-panel screens 10 shown in Figure 1; It also can be a LCD, comprises thin film transistor (TFT) (TFT) substrate 110, sweep trace S (n-4)～S (n+4), data line D (n-4)～D (n+4), pixel transistor 112 and pixel electrode 113.In addition, flat-panel screens 100 also comprises sensing element 115, read line R (n-1)～R (n+1) and the testing circuit 120 that constitutes contactor control device.
The flat-panel screens 100 that the embodiment of the invention disclosed is that with the different of flat-panel screens 10 shown in Figure 1 the distribution density of sensing element 115 on thin film transistor base plate 110 is different.In the present embodiment, not only sweep trace S (n-4), Sn, S (n+4) are electrically coupled to sensing element 15 respectively, and sweep trace S (n-2) and S (n+2) also are electrically coupled to sensing element 15 respectively.That is to say that the flat-panel screens 100 of present embodiment is that each 2 sweep trace and 4 data lines just are provided with a sensing element 115.Therefore, if the resolution of flat-panel screens 100 is 240X320, then the density of sensing element 115 is 60X160.
See also Fig. 4, the sweep signal Scan_2 of the embodiment of the invention comprises one first start signal pre-charge and one second start signal display respectively.The first start signal pre-charge and the second start signal display all open pixel transistor 112 and the sensing element 115 with the sweep trace electric property coupling; And when feeding the second start signal display successively among sweep trace S (n-4)～S (n+4), flat-panel screens 100 utilizes data line D (n-4)～D (n+4) that data-signal is passed to corresponding pixel electrode 113 so that flat-panel screens 100 display frames.As shown in Figure 4; When the sweep signal Scan_2 that is fed among the sweep trace S (n-4) is the second start signal display; The sweep signal Scan_2 that is fed among the sweep trace S (n-2) is the first start signal pre-charge, and open with the sensing element 115 of sweep trace S (n-4) and S (n-2) electric property coupling this moment.In like manner; When the sweep signal Scan_2 that is fed among the sweep trace Sn is the second start signal display; The sweep signal Scan_2 that is fed among the sweep trace S (n+2) is first start signal, and open with the sensing element 115 of sweep trace Sn and S (n+2) electric property coupling this moment.Therefore; For 4X4 pixel region A; Whether it exists two sensing elements 115 to be touched with this 4X4 of while sensing pixel region A and produces a sensing signal, and is read to testing circuit 120, and is stored in the testing circuit 120 through read line R (n-1)～R (n+1).
Because whether the flat-panel screens 100 that the embodiment of the invention disclosed is provided with two sensing elements 115 and is touched with this 4X4 of while sensing pixel region A in every 4X4 pixel region A; Even the area B that therefore user touched is distant from the sensing element 115 (n-4) in this 4X4 pixel region; It is difficult for detected by sensing element 115 (n-4); But; Area B is closer from another sensing element 115 (n-2) in this 4X4 pixel region, can be detected by sensing element 115 (n-2).Therefore, the density of sensing element 115 of the present invention is bigger, and it can promote the touch control detection ability of flat-panel screens 10.
In addition; Because two sensing elements 115 that are provided with in every 4X4 pixel region A can be opened simultaneously; And these two sensing elements 115 (n-4) and 115 (n-2) utilize same read line Rn to transmit its sensing signal; Therefore, these two sensing elements 115 (n-4) and 115 (n-2) only can transmit same sensing signal to testing circuit 120 simultaneously.For instance; The first start signal pre-charge in sweep signal Scan_2 and the second start signal display are passed to before these sensing elements 115, can utilize read line R (n-1)～R (n+1) that these sensing elements 115 are charged to a predetermined voltage earlier.When sensing area B, sensing element 115 (n-2) is touched; Sensing element 115 (n-2) can make sensing element 115 (n-2) discharge (generally being to be discharged to common voltage (common voltage)) through user's finger or pushing of felt pen; Even and another sensing element 115 (n-4) does not discharge to the predetermined voltage on it, the predetermined voltage on the sensing element 115 (n-4) also can transfer to sensing element 115 (n-2) through read line Rn thereby discharge.That is to say that the predetermined voltage on sensing element 115 (n-2) and 115 (n-4) all is pulled low to a voltage level, 120 of detected circuit read through read line Rn then, and are stored in the testing circuit 120.Therefore; The flat-panel screens 100 that the embodiment of the invention disclosed is after single pass; The number that is stored in the sensing signal in the testing circuit 120 does not increase, and it still is 60X80, that is to say that flat-panel screens 100 is on the basis of the storage volume that does not increase testing circuit 120; Can increase the density of its sensing element 115, thereby improve the touch control detection ability of flat-panel screens 100.
Certainly; From above-mentioned explanation; Those skilled in the art can know that sweep signal Scan_2 of the present invention also can comprise a plurality of first start signal pre-charge and one second start signal display, to open simultaneously and different scanning line more than two sensing element of electric property coupling mutually; Thereby further improve the density of sensing element on the flat-panel screens, promote the touch control detection ability of flat-panel screens.
According to above-mentioned; The disclosed contactor control device that is mainly constituted by sensing element 115; It is arranged at have multi-strip scanning line S (n-4)～substrate 110 of S (n+4) on; The sweep signal Scan_2 that utilizes flat-panel screens 100 original sweep trace S (n-4), S (n-2), Sn, S (n+2) and S (n+4) to be transmitted controls the sensing element of whether opening with sweep trace S (n-4), S (n-2), Sn, S (n+2) and S (n+4) electric property coupling 115; And through adjustment sweep signal Scan_2 and open sensing element 115 simultaneously, and by the sensing element of opening simultaneously 115 and different scanning line electric property coupling mutually.Therefore, sensing apparatus of the present invention can combine with flat-panel screens 100, makes flat-panel screens 100 have touch controllable function.And on the basis of the storage volume that does not increase testing circuit 120, thereby the density that can increase sensing element 115 promotes the touch control detection ability of flat-panel screens 100.In addition; It is to be noted; The contactor control device that mainly constitutes of the present invention by sensing element 115; Except can be applicable to the aforementioned LCD that proposes of the present invention, also can be applicable to for example be: have the exciting light diode (organic light emitting device, OLED), the flat-panel screens of flexible display other types such as (flexible display); As long as flat-panel screens has the multi-strip scanning line and can use sensing apparatus proposed by the invention, thereby contactor control device and flat-panel screens are combined.
In addition, the present invention also provides a kind of touch control detecting method, and it can be used to drive flat-panel screens as shown in Figure 3.See also Fig. 5, it shows the process flow diagram of above-mentioned touch control detecting method.Whether above-mentioned touch control detecting method: in sweep trace S (n-4)～S (n+4), feed sweep signal Scan_2 successively and open with control sensing element 115, wherein sweep signal Scan_2 comprises that at least one first start signal and one second start signal are with the different sensing elements of unlatching simultaneously with different scanning line electric property coupling if comprising; And detect the sensing signal of opening simultaneously that different sensing element produced and operate to have judged whether touching.
Wherein, detecting the sensing signal of opening simultaneously that different sensing element produced comprises with the step that judges whether the touching operation: read the sensing signal that sensing element was produced that read line transmitted and sensing signal is stored in the testing circuit; And judge that according to sensing signal sensing element is whether by touching and relevant touch position.In addition, above-mentioned touch control detecting method also can further comprise and utilizes read line that sensing element is charged to a predetermined voltage.
In sum; Flat-panel screens, contactor control device and touch control detecting method with touch controllable function of the present invention makes sweep signal have at least one first start signal and one second start signal through the sweep signal in the adjustment sweep trace; With the different sensing elements of unlatching simultaneously with different scanning line electric property coupling; Thereby can be on the basis of the storage volume that does not increase testing circuit, the density that improves sensing element is to promote the touch control detection ability.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limiting the present invention, anyly has the knack of this operator, do not breaking away from the spirit and scope of the present invention; When can doing a little change and retouching, thus protection scope of the present invention claims defined after looking is as the criterion.
Claims (4)
1. the flat-panel screens with touch controllable function is characterized in that, said flat-panel screens comprises:
The multi-strip scanning line;
A plurality of data lines, thus with said these sweep traces are arranged in a crossed manner each other said flat-panel screens is divided into a plurality of pixel regions;
A plurality of pixel transistors are arranged at respectively and also are electrically coupled to corresponding scanning line and data line in said these pixel regions respectively;
A plurality of pixel electrodes are arranged at respectively in said these pixel regions, and each pixel electrode is electrically coupled to corresponding pixel transistor respectively;
Many read lines, arranged in a crossed manner each other with said these sweep traces; And
A plurality of sensing elements are electrically coupled to corresponding scanning line and read line respectively;
Wherein, Whether in said these sweep traces, feed the one scan signal successively opens to control said these sensing elements; Said sweep signal comprises at least one first start signal and one second start signal opening at least two said these sensing elements simultaneously, and at least two said these sensing elements being opened simultaneously and different scanning line electric property coupling mutually; Said flat-panel screens also utilizes said these read lines that said these sensing elements are charged to a predetermined voltage;
Said flat-panel screens further comprises: a testing circuit is electrically coupled to said these read lines to read the sensing signal that said these sensing elements are produced.
2. the flat-panel screens with touch controllable function as claimed in claim 1; It is characterized in that; When in said these sweep traces, feeding said second start signal successively, utilize said these data lines data-signal to be passed to corresponding pixel electrode so that said flat-panel screens display frame.
3. a contactor control device is arranged on the substrate, and said substrate is provided with the multi-strip scanning line, it is characterized in that, said contactor control device comprises:
Many read lines, arranged in a crossed manner each other with said these sweep traces; And
A plurality of sensing elements are electrically coupled to corresponding scanning line and read line respectively;
Wherein, Whether in these sweep traces, feed the one scan signal successively and open to control said these sensing elements, said sweep signal comprises that at least one first start signal and one second start signal are with the different sensing elements of unlatching simultaneously with different scanning line electric property coupling; Said contactor control device also utilizes said these read lines that said these sensing elements are charged to a predetermined voltage;
Said contactor control device further comprises: a testing circuit is electrically coupled to said many read lines to read the sensing signal that said these sensing elements are produced.
4. touch control detecting method; Be applicable to a contactor control device, it is characterized in that said contactor control device is arranged at one to have on the substrate of multi-strip scanning line; Said contactor control device comprises many read lines and a plurality of sensing element; Said these read lines and said these sweep traces are arranged in a crossed manner each other, and said these sensing elements are electrically coupled to corresponding scanning line and read line respectively, and said touch control detecting method comprises:
Whether in said these sweep traces, feed the one scan signal successively opens to control said these sensing elements; Wherein, said sweep signal comprises that at least one first start signal and one second start signal are with the different sensing elements of unlatching simultaneously with different scanning line electric property coupling; And
Detecting the sensing signal of opening simultaneously that different sensing element produced operates to have judged whether touching;
Said contactor control device comprises that further one is electrically coupled to the testing circuit of said many read lines, and the sensing signal that different sensing element produced opened simultaneously of aforementioned detection comprises with the step that judges whether the touching operation: read the sensing signal that said these sensing elements were produced that said these read lines are transmitted and said these sensing signals are stored in the said testing circuit; And judge that according to said these sensing signals said these sensing elements are whether by touching and relevant touch position;
Further comprise: utilize said these read lines that said these sensing elements are charged to a predetermined voltage.
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| CN2009101751929A CN101694551B (en) | 2009-10-20 | 2009-10-20 | Plane display, touch control device and touch control detection method |
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| CN2009101751929A CN101694551B (en) | 2009-10-20 | 2009-10-20 | Plane display, touch control device and touch control detection method |
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| US8310459B2 (en) | 2009-09-23 | 2012-11-13 | Nokia Corporation | Touch detection |
| CN101887184B (en) * | 2010-07-02 | 2011-11-16 | 友达光电股份有限公司 | Pixel array and display panel comprising same |
| CN103019467A (en) * | 2012-11-27 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Optical touch screen |
| CN104536609B (en) * | 2014-12-30 | 2018-01-30 | 深圳市华星光电技术有限公司 | Display panel and fault detection method with touch controllable function |
| TWI564866B (en) * | 2015-07-03 | 2017-01-01 | 點晶科技股份有限公司 | Display device and display method thereof |
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