CN101819496B - Detection method of capacitance-type touch screen - Google Patents
Detection method of capacitance-type touch screen Download PDFInfo
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- CN101819496B CN101819496B CN2010101347374A CN201010134737A CN101819496B CN 101819496 B CN101819496 B CN 101819496B CN 2010101347374 A CN2010101347374 A CN 2010101347374A CN 201010134737 A CN201010134737 A CN 201010134737A CN 101819496 B CN101819496 B CN 101819496B
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Abstract
The invention relates to a detection method of a capacitance-type touch screen. A mode of connecting a series of electrode groups on a circuit board to a special power level is utilized to detect whether the touch screen is abnormal or not in a mode of comparing coordinates detected by the touch screen with the coordinates of each electrode group. The detection method of the touch screen dynamically simulates the multi-finger touch screen effect by utilizing a static mode, saves time and cost and is simple and convenient and more rapid to use.
Description
Technical field
The present invention relates to a kind of detection method of touch-screen, refer in particular to a kind of detection method of capacitive touch screen.
Background technology
Touch screen technology is a kind of main input mode of following man-machine exchange; It will eliminate keyboard gradually; Input tools such as mouse have more an attractive advantage and the multiple point touching technology is this field, but this technology belong to the technology that optics detects touch-screen mostly; Cost is higher, so be that present most of user institute is unacceptable.And in recent years, detection method also having been arranged to the four-wire system resistance type touch control screen, it passes through the relatively magnitude of voltage at the different two ends of two conductive layers of touch screen, confirms the zone of living in of each touch point on the said touch-screen; And the magnitude of voltage according to the different two ends of two conductive layers of said touch-screen is confirmed the movement tendency of each touch point in said zone on the said touch-screen, and its particular content can be with reference to Chinese patent CN200810111921.X.
Though said method can be used for detecting resistive touch screen; And simplified user's operation; But along with the continuous development of capacitive touch screen in recent years; More advantages that it has also will replace the market of resistance type touch control screen, so we hope to find a kind of detection method to capacitive touch screen.
And, also resting on the mechanical type test phase at present for the test of capacitive touch screen, the common mechanical arm simulation finger that utilizes is rule on product; Action such as get ready; Be used for simulating the mode of operation of actual persons, reading of data compares then; Handle, judge at last whether product is qualified.Because this testing process need utilize mechanical arm to come the operational motion of emulation user finger, thus need the user to set mechanical arm in advance, the accuracy during with the assurance simulated operation.Must increase difficulty like this, and waste the time.
Therefore we hope and can solve above problem for users provide a kind of method more easily.
Summary of the invention
The actual technical matters to be solved of the present invention is the detection method how a kind of capacitive touch screen is provided, and it is not only simple, and efficient and convenient.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of detection method of capacitive touch screen, it may further comprise the steps: a circuit board is provided, and rectangular formula is distributed with a series of electrodes on it, and each electrode is all independently controlled by control module; On the foregoing circuit plate, to select at least one group of electrode of forming by some electrodes, and make said electrode winding ground or connect a certain particular level, other outer zone of selected electrode group all is set to the level preset on this moment said circuit board; During test, touch-screen is placed in the top of this circuit board or circuit board is positioned over touch-screen top, whether the coordinate that touch-screen is measured contrasts with the coordinate that each electrode group belongs to, exist unusually thereby be used for detecting this touch-screen.
The method of detecting touch screen of the present invention utilizes static mode to realize that dynamic simulation refers to touch screen effect more, and not only method is easy, and saves time and expense.It is more convenient to use.
Description of drawings
Fig. 1 is the structural representation of circuit board among the present invention;
Fig. 2 is the synoptic diagram of an electrode group on the circuit board among the present invention;
Fig. 3 is the synoptic diagram when an electrode group is slided on the circuit board among the present invention;
Fig. 4 is the synoptic diagram of two electrode groups on the circuit board among the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
The present invention detects the method for capacitance type touch control screen and has utilized a circuit board 1, and its concrete structure please refer to shown in Figure 1, is rectangular a series of electrodes 10 that are distributed with on the said circuit board 1, and each electrode 10 independently exists, and independently controls by control module.Owing to can set each small electrode 10 in advance and independently control, so in theory by of the variation of a series of program with regard to level on this circuit board of may command by each control module.
Because said circuit board 1 is made up of several small electrodes 10; And each small electrode 10 is independently controlled by each control module; So through setting the size of specific program, to reach the purpose that improves constantly the product test precision with regard to one group of electrode on the may command circuit board.During test; Touch-screen (not indicating) is placed on the top of this circuit board 1; Perhaps also can circuit board be positioned over touch-screen top; Control electrode crowd's level changes then, reaches the purpose that inductance capacitance changes on the adjustment touch screen, has so just realized the mode of operation of emulation user finger touches touch screen.Following mask body is discussed its method of testing:
Please refer to shown in Figure 2ly, at first select one group of electrode such as electrode group 100 on the circuit board 1, the number of each electrode in its electrode group can be made up of any natural number.For the variation of level on the accurate control circuit board 1, we should not select excessive number; Simultaneously, in order to guarantee the variation of level on the quick control circuit board 1, we also should not select too small number.So variation of level on the accurate control circuit board 1 in order to satisfy simultaneously fast; The electrode group 100 that our selection is made up of nine small electrodes; Can know by above-mentioned argumentation, utilize control module can the level of electrode group 100 be arranged to the level identical with the earth, promptly be connected with the earth; Perhaps make the zone of electrode group 100 connect some particular level, and the zone except that electrode group 100 on this circuit board 1, the level of promptly removing electrode group 100 outer All Rangeses can be set to other preset level.The zone at electrode group 100 place just is equivalent to and has a finger like this, when this circuit board with electrode group 100 and touch-screen near the time, and with required electrode winding, just produced inductance capacitance between this electrode group and the touch screen electrode.Thus, we just can arrive the purpose that changes the inductance capacitance on the touch screen through the level of controlling this electrode group 100.At this moment, coordinate and electrode group 100 regional equivalent coordinates that touch-screen is read contrast, and promptly whether the said touch screen of decidable exists unusually.
Above-mentioned method for detecting just singly refers to touch the situation of touch screen to emulation; Singly refer to the detecting of slide mode on touch screen for emulation; Please refer to shown in Figure 3; Singly refer to the mode on touch screen, handled if will detect emulation, need to realize earlier the effect that electrode group 100 is slided on touch screen.Need utilize each control module to come moving of control electrode group 100 equally, on circuit board, slide to be used for controlling said electrode group.Because the level in electrode group 100 zones is connected with the level of the earth,, thereby realize that emulation points the mode of operation of on touch screen, sliding so control module can be controlled and wait moving of ground electrode group 100 continuously.At this moment, Grid Track and the back Grid Track that is detected of electrode group 100 zone slips that touch-screen is read contrast, and whether the said touch screen of final decision exists unusually.
Above-mentioned detecting mode is utilized the mobile operation that has realized that the emulation finger moves on touch screen of the electrode group 100 on the circuit board 1; But only realized the motion that imitation singly refers to; Method for detecting for many finger touches of emulation touch screen does not also relate to, and continues to discuss the implementation method that the many fingers of emulation as two refer on circuit board 1 below again.
For the situation of emulation two finger touches Trackpads, identical with the principle that singly refers to touch Trackpad, we need set the electrode group equally; But different is; Need set two arrays of electrodes 100 and 101 in advance, please refer to shown in Figure 4ly, still utilize be arranged to the earth identical level of control module this two arrays of electrodes 100 and 101 region level; Promptly be connected with the earth; Perhaps make the zone of electrode group 100 and 101 connect some particular level, and the zone outside on this circuit board 1, the level of promptly removing the All Ranges outside two electrode groups 100 and 101 all is set to other preset level.The zone at such two electrode groups 100 and 101 places just is equivalent to and has two fingers, when this circuit board 1 with two electrode groups 100 and 101 during near touch screen, will produce corresponding inductance capacitance, has reached the operation of emulation two finger touches touch screens.Thus, we just can arrive the purpose that changes the inductance capacitance on the touch screen through the level of controlling this two electrodes group 100 and 101.At this moment, the coordinate that touch-screen is read and the coordinate of two electrode groups 100 and 101 corresponding regions contrast, and promptly whether the said touch screen of decidable exists unusually.
For the variation of each level on the more accurate control circuit board 1, above-mentioned each related electrode 10 also can be designed to other different shape, like circle, and ellipse etc.Equally, the electrode group of being made up of electrode 10 100 or 101 also can change different shapes as required.For emulation greater than two operations of finger on touch screen; It also is same reason; Promptly through controlling different electrode groups and it being connected with the earth; Whether guaranteeing that its level is identical with the earth has realized that emulation refers to touch the operation of touch screen more, and the coordinate of finally reading through touch-screen is compared with the equivalent coordinate of counter electrode group region, exist unusually with the judgement touch screen.
The method of detecting touch screen of the present invention utilizes static mode to realize that dynamic simulation refers to touch screen effect more, and not only method is easy, and saves time and expense.It is more convenient to use.
Claims (9)
1. the detection method of a capacitive touch screen, it may further comprise the steps:
One circuit board is provided, and rectangular formula is distributed with a series of electrodes on it, and each electrode is all independently controlled by control module;
On the foregoing circuit plate, select at least one group of electrode of forming by some electrodes, and make said electrode winding ground or connect a certain particular level, other outer zone of selected electrode group all is provided with other preset level on the said circuit board at this moment;
During test, touch-screen is placed in the top of this circuit board or circuit board is positioned over touch-screen top, whether the coordinate that touch-screen is measured contrasts with the coordinate that each electrode group belongs to, exist unusually thereby be used for detecting this touch-screen.
2. detection method as claimed in claim 1 is characterized in that: said each electrode is independently controlled by control module, and by the variation of its level of programmed control.
3. detection method as claimed in claim 2 is characterized in that: when said control module control electrode group moved, the said electrode group of corresponding control was slided on circuit board.
4. detection method as claimed in claim 3 is characterized in that: whether the Grid Track that Grid Track that said electrode group is detected after sliding and said touch-screen are read contrasts, exist unusually thereby can be used to detect this touch-screen.
5. detection method as claimed in claim 1 is characterized in that: if select two arrays of electrodes, during test, the coordinate that touch-screen is measured contrasts with the coordinate at two electrode group places on said circuit board, thereby whether be used for senses touch shields and exist unusually.
6. detection method as claimed in claim 1 is characterized in that: the shape of said electrode can be a rectangle, circle, ellipse etc.
7. the detection method of a capacitive touch screen, it may further comprise the steps:
One circuit board is provided, and rectangular formula is distributed with a series of electrodes on it, and each electrode is all independently controlled by control module;
On the foregoing circuit plate, select two groups or more the electrode of forming by some electrodes, and make selected electrode winding ground or connect a certain particular level;
The level of the All Ranges that selected electrode group is outer all is set to other preset level;
During test, near touch screen, the equivalent coordinate of coordinate that touch-screen is read and selected electrode group institute corresponding region contrasts respectively with above-mentioned circuit board with multi-group electrode, and promptly whether the said touch screen of decidable exists unusually.
8. detection method as claimed in claim 7 is characterized in that: said each electrode is by the variation of its level of programmed control, and said control module control electrode group moves to control said electrode group and on circuit board, slides.
9. detection method as claimed in claim 7 is characterized in that: the electrode group that said electrode is formed can change different shapes as required.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101347374A CN101819496B (en) | 2010-03-22 | 2010-03-22 | Detection method of capacitance-type touch screen |
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| CN2010101347374A CN101819496B (en) | 2010-03-22 | 2010-03-22 | Detection method of capacitance-type touch screen |
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| CN101819496B true CN101819496B (en) | 2012-05-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9542092B2 (en) | 2011-02-12 | 2017-01-10 | Microsoft Technology Licensing, Llc | Prediction-based touch contact tracking |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102169161B (en) * | 2010-11-19 | 2013-02-06 | 苏州瀚瑞微电子有限公司 | Method for testing capacitive touch chip |
| CN102121956A (en) * | 2010-11-26 | 2011-07-13 | 苏州佳世达电通有限公司 | Detection method and system of capacitance-type touch screen |
| US8988087B2 (en) | 2011-01-24 | 2015-03-24 | Microsoft Technology Licensing, Llc | Touchscreen testing |
| US9965094B2 (en) | 2011-01-24 | 2018-05-08 | Microsoft Technology Licensing, Llc | Contact geometry tests |
| US20120218028A1 (en) * | 2011-02-28 | 2012-08-30 | Tpk Touch Solutions Inc. | Capacitive touch panel, touch sensor structure and a method for manufacturing the capacitive touch panel |
| US9785281B2 (en) | 2011-11-09 | 2017-10-10 | Microsoft Technology Licensing, Llc. | Acoustic touch sensitive testing |
| CN102636718B (en) * | 2012-05-10 | 2014-08-20 | 意力(广州)电子科技有限公司 | Mutual capacitance touch screen detection method |
| CN102654543B (en) * | 2012-05-23 | 2014-07-30 | 东莞通华液晶有限公司 | Method for testing capacitive touch screens and testing equipment thereof |
| CN102760020B (en) * | 2012-06-29 | 2015-12-02 | 华为终端有限公司 | A kind of method of Detection capacitance formula touch-screen, device and mobile terminal |
| WO2014208129A1 (en) | 2013-06-28 | 2014-12-31 | シャープ株式会社 | Method for inspecting touch-panel electrode substrate |
| CN104808886B (en) * | 2015-05-11 | 2018-07-10 | 京东方科技集团股份有限公司 | Self-capacitance fingerprint recognition touch screen and preparation method thereof, display device |
| CN104915061B (en) * | 2015-06-25 | 2019-02-26 | 西宁科进工业设计有限公司 | Touch simulation device and touch simulation methodologies |
| JP6560971B2 (en) * | 2015-12-04 | 2019-08-14 | 株式会社ジャパンディスプレイ | Display device and input device |
| CN108509100A (en) * | 2018-05-30 | 2018-09-07 | 北京硬壳科技有限公司 | A kind of capacitive touch device |
| CN109085960A (en) * | 2018-08-10 | 2018-12-25 | 安徽格林开思茂光电科技股份有限公司 | A kind of coordinate combination detection method of touch screen |
| CN112798980A (en) * | 2020-12-24 | 2021-05-14 | Tcl华星光电技术有限公司 | Detection device and detection method for detecting abnormity of light-emitting panel |
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| US7253808B2 (en) * | 2002-11-18 | 2007-08-07 | Lg.Philips Lcd Co., Ltd. | Touch screen system and display device using the same |
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| CN1402116A (en) * | 2001-08-04 | 2003-03-12 | 三星电子株式会社 | Device with touch screen using connected external apparatus for displaying information, and method thereof |
| CN101149656A (en) * | 2007-10-26 | 2008-03-26 | 广东威创视讯科技股份有限公司 | Infra red touch screen and multiple point touching positioning method |
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| US9542092B2 (en) | 2011-02-12 | 2017-01-10 | Microsoft Technology Licensing, Llc | Prediction-based touch contact tracking |
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