CN101833939B - Touch display system and drive method thereof - Google Patents
Touch display system and drive method thereof Download PDFInfo
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- CN101833939B CN101833939B CN2009101272356A CN200910127235A CN101833939B CN 101833939 B CN101833939 B CN 101833939B CN 2009101272356 A CN2009101272356 A CN 2009101272356A CN 200910127235 A CN200910127235 A CN 200910127235A CN 101833939 B CN101833939 B CN 101833939B
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Abstract
The invention provides a touch display system and a drive method thereof. The touch display system comprises a display unit, a display circuit, a sensing device, a sensing circuit and a synchronous controller, wherein the display circuit is coupled with the display unit and used for driving the display position of the display unit; the sensing device is coupled with the display unit and used for sensing external contact ; the sensing circuit is coupled with the sensing device and used for driving the sensing position of the sensing device and receiving the sensing signal; and the synchronous controller is coupled with the display circuit and the sensing circuit and used for synchronously controlling the display frequency of the display circuit and the sensing frequency of the sensing circuit, so that the display position and the sensing position do not overlap and can be kept a preset distance.
Description
Technical field
The invention relates to a kind of display system, particularly relevant for a kind of touch control display system and method for driving thereof.
Background technology
Shown in Figure 1 in traditional touch control display system framework, circuit of display driving 120 is independent and parallel runnings with sensor drive driving circuit 140.Therefore, the driving that tends to take place driving and the touch sensing 130 of display base plate 110 has on the sequential approaching situation on the overlapping or position.Because display 110 often is limited by the opering characteristic of electric apparatus of transistor component or display medium when frame updating; Must use big voltage or high current to drive; So panel when driving generation, is easy to because the coupling effect that electrical variation caused of coupling capacitance between driven unit, display medium or electrode and adjacent electrode or display medium forms the noise of touch sensing 130.If this moment touch sensing 130 activation point also just in time the activation point of display 110 or near the time, receive this noise effect naturally and reduce the signal noise ratio of sensing signal.Because the sensing panel is to splice on display panel, especially when carrying out touch-control, external force applies pressure on the sensing panel, makes display panel and sensing panel to press close to more, and the conduction of noise will worsen more.
For the foregoing reasons, be necessary to provide and reduce the sensor output signal noise to promote a kind of touch control display system of signal noise ratio.
Summary of the invention
Technical matters to be solved by this invention is to provide and can reduces the sensor output signal noise to promote a kind of touch control display system and the driving method thereof of signal noise ratio.
The present invention provides a kind of touch control display system.Touch control display system comprises that a display device and a display circuit couple display device, in order to drive the display position of display device.Touch control display system also comprises a sensing apparatus, couples display device, in order to respond to outside contact; And a sensing circuit, couple sensing apparatus, in order to the sense position that drives sensing apparatus and receive sensing signal.Touch control display system also comprises a synchronous controller; Couple display circuit and sensing circuit; In order to the display frequency through this display circuit of synchro control and the sensing frequency of this sensing circuit, make that display position and sense position are not overlapping and keep a both set a distance.
The driving method that the present invention provides a kind of touch-control to show.Driving method comprises: the display position that drives display device; Drive the sense position of sensing apparatus; And the sensing frequency of the display frequency of the display circuit that couples of synchro control and this display device and the sensing circuit that couples with this sensing apparatus makes that display position and sense position are not overlapping and keeps a both set a distance.
The driving method that the above touch control display system and touch-control show reduces the influence of display device coupled noise to sensing apparatus, and the signal noise ratio that therefore promotes sensing signal is also improved the sensing sensitivity of sensing apparatus.
Description of drawings
Fig. 1 is the Organization Chart that illustrates traditional touch control display system;
Fig. 2 is the Organization Chart that illustrates the touch control display system of the embodiment of the invention; And
Fig. 3 is the process flow diagram according to the driving method of embodiment of the invention explanation touch-control demonstration.
[primary clustering symbol description]
100～touch control display system
110～display
120～circuit of display driving
130～touch sensing
240～sensor drive driving circuit
200～touch control display system
210～display device
220～display circuit
230～sensing apparatus
240～sensing circuit
250～isochronous controller
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended accompanying drawing, elaborates as follows:
Fig. 2 is the Organization Chart that illustrates the touch control display system of the embodiment of the invention.Touch control display system 200 comprises a display device 210, a display circuit 220, sensing apparatus 230, a sensing circuit 240 and a synchronous controller 250.
Isochronous controller 250 possibly be analog/digital circuit independently, also possibly comprise several control modules of integration, for example single-chip or microprocessor etc., and it can receive, handle, transmit various signals.In the present embodiment, isochronous controller 250 is through the present display position and the sense position of drive signal monitoring touch-control system of detecting display circuit 220 and sensing circuit 240, judges whether display position and sensed position have overlapping or keep a both set a distance.This both set a distance be can not produce between the signal according to the signal that drives display position and driving sense position under the situation of coupling to define.When display position and sense position distance too near and when causing signal interfering with each other; Isochronous controller 250 can temporarily stop the driving of display circuit 220 or sensing circuit 240; For example stop the driving of display frequency or sensing frequency, make display position and sense position be spaced a distance because of sequential a period of time of staggering.At another embodiment, isochronous controller 250 can temporarily quicken the driving of display circuit 220 or sensing circuit 240, for example quickens the driving of display frequency or sensing frequency, and the sequential that can stagger equally reaches the effect of sigtnal interval one segment distance each other.
At another embodiment, isochronous controller 250 just starts synchro control when only externally object contacts sensing apparatus 240 of the present invention.Because when external force contact sensing device 240; Sensing apparatus 240 is more pressed close to display panel; At this moment; If display position that display circuit 220 and sensing circuit 240 are driven and sense position be just in time near this external force contact position, outside then the drive signal of display device 210 probability that is coupled to sensing apparatus 230 promoted greatly, the noisiness that was coupled was also high especially.Beyond the situation, as if signal can interfering with each other then isochronous controller 250 optionally not carry out synchro control between display device 210 and the sensing apparatus 230 at this.
Fig. 3 is according to embodiments of the invention, and the process flow diagram of the method that touch-control shows is described.Flow process is begun by step 302.In step 302, drive display position and display frequency.Display circuit 220 sends display position and the display frequency of drive display device 210 to continue to manifest picture.In step 304, drive sense position and sensing frequency.Sense position and sensing frequency that sensing circuit 240 sends drive sensing apparatus 230 contact with detecting external force.Then, carry out step 306, synchro control display frequency and sensing frequency do not make display position and sense position overlapping or keep a both set a distance.In embodiments of the present invention, isochronous controller 250 continues to monitor display position and sense position, whether keeps a both set a distance according to both position judgment.Therefore and interval one distance when not keeping one both during set a distance, isochronous controller 250 is through controlled frequency, for example temporarily stops to drive display frequency or sensing frequency and makes display position and sense position.Therefore and interval one distance or for example quicken to drive display frequency or sensing frequency and make display position and sense position.
At another embodiment, when external force contact display device 210 or sensing apparatus 230, whether isochronous controller 250 monitoring display positions and sense position be overlapping or keep a both set a distance, and whether decision is carried out like above-mentioned synchro control then.When there not being outside contact sensing device 210, then isochronous controller does not carry out the action of synchro control.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limit the present invention; Any personnel that are familiar with this technology; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (8)
1. a touch control display system is characterized in that, comprising:
One display device;
One display circuit couples this display device, in order to drive the display position of this display device;
One sensing apparatus couples this display device, in order to respond to outside contact;
One sensing circuit couples this sensing apparatus, in order to sense position and the reception sensing signal that drives this sensing apparatus; And
One synchronous controller couples this display circuit and this sensing circuit, in order to the display frequency through this display circuit of synchro control and the sensing frequency of this sensing circuit, makes that this display position and this sense position are not overlapping and keeps a both set a distance.
2. touch control display system according to claim 1; It is characterized in that; Judge this display position and this sense position when isochronous controller and do not keep one both during set a distance; This isochronous controller this display circuit of order or this sensing circuit temporarily stop to drive, and keep a both set a distance up to this display position and this sense position.
3. touch control display system according to claim 1; It is characterized in that; Judge this display position and this sense position when isochronous controller and do not keep one both during set a distance; This isochronous controller this display circuit of order or this sensing circuit quicken to drive, and keep a both set a distance up to this display position and this sense position.
4. touch control display system according to claim 1 is characterized in that, when this isochronous controller judges that having the outside contacts, carries out synchro control.
5. the driving method that touch-control shows is characterized in that, comprising:
Drive the display position of display device;
Drive the sense position of sensing apparatus; And
The sensing frequency of the display frequency of the display circuit that synchro control and this display device couple and the sensing circuit that couples with this sensing apparatus makes that display position and sense position are not overlapping and keeps a both set a distance.
6. according to claim 5 driving method that described touch-control shows; It is characterized in that; Do not keep one both during set a distance when display position and sense position, temporarily stop to drive display circuit or sensing circuit, keep a both set a distance up to display position and sense position.
7. the driving method that shows according to the described touch-control of claim 5 is characterized in that, does not keep one both during set a distance when display position and sense position, quickens to drive display circuit or sensing circuit, keeps a both set a distance up to display position and sense position.
8. the driving method that shows according to the described touch-control of claim 5 is characterized in that, also comprises to judge whether to have outside contact and whether carry out synchro control with decision.
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| CN2009101272356A CN101833939B (en) | 2009-03-09 | 2009-03-09 | Touch display system and drive method thereof |
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| CN2009101272356A CN101833939B (en) | 2009-03-09 | 2009-03-09 | Touch display system and drive method thereof |
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| CN101833939B true CN101833939B (en) | 2012-03-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160299618A1 (en) * | 2014-10-15 | 2016-10-13 | Boe Technology Group Co., Ltd. | Display device and method for driving the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012096259A1 (en) * | 2011-01-14 | 2012-07-19 | シャープ株式会社 | Liquid crystal display device and drive method therefor |
| CN103473989B (en) * | 2012-06-08 | 2016-06-22 | 群康科技(深圳)有限公司 | Display device and control method thereof |
| CN104199577B (en) * | 2014-09-25 | 2017-02-15 | 深圳市华星光电技术有限公司 | Method and circuit of providing synchronous signals for touch panel by display panel |
| US9874973B2 (en) * | 2014-12-24 | 2018-01-23 | Synaptics Incorporated | Techniques for reducing cross talk for simultaneous touch sensing and display updating |
| CN106297684B (en) * | 2015-05-29 | 2018-10-30 | 晨星半导体股份有限公司 | The control method of the touch-control of Touch Screen and display circuit and touch-control and display control module and Touch Screen |
| CN108958518B (en) * | 2017-05-18 | 2021-08-06 | 群创光电股份有限公司 | Touch system and control method thereof |
| WO2019157735A1 (en) * | 2018-02-14 | 2019-08-22 | 深圳市为通博科技有限责任公司 | Touch controller, touch display system, and touch display synchronization method |
| CN108762544A (en) * | 2018-04-25 | 2018-11-06 | 维沃移动通信有限公司 | The control method of a kind of electronic equipment and touching display screen |
| WO2021226927A1 (en) * | 2020-05-14 | 2021-11-18 | 京东方科技集团股份有限公司 | Touch driving method, touch display apparatus and electronic device |
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| JP2004086735A (en) * | 2002-08-28 | 2004-03-18 | Toshiba Corp | Electronic device and operating mode switching method |
| CN2927238Y (en) * | 2005-06-30 | 2007-07-25 | 深圳市联思精密机器有限公司 | Touch-controlled planar display device |
| CN101078961A (en) * | 2006-05-27 | 2007-11-28 | 陈其良 | Line surface electrode type touch-control screen |
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| JP2004086735A (en) * | 2002-08-28 | 2004-03-18 | Toshiba Corp | Electronic device and operating mode switching method |
| CN2927238Y (en) * | 2005-06-30 | 2007-07-25 | 深圳市联思精密机器有限公司 | Touch-controlled planar display device |
| CN101078961A (en) * | 2006-05-27 | 2007-11-28 | 陈其良 | Line surface electrode type touch-control screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160299618A1 (en) * | 2014-10-15 | 2016-10-13 | Boe Technology Group Co., Ltd. | Display device and method for driving the same |
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| CN101833939A (en) | 2010-09-15 |
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Effective date of registration: 20220331 Address after: 26, 1 song Chi Road, Xinyi District, Taipei, Taiwan, China Patentee after: HANNSTAR DISPLAY Corp. Address before: Hsinchu County, Taiwan, China Patentee before: Industrial Technology Research Institute |