CN102236449A - Panel control device and operation method thereof - Google Patents
Panel control device and operation method thereof Download PDFInfo
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- CN102236449A CN102236449A CN2010101692849A CN201010169284A CN102236449A CN 102236449 A CN102236449 A CN 102236449A CN 2010101692849 A CN2010101692849 A CN 2010101692849A CN 201010169284 A CN201010169284 A CN 201010169284A CN 102236449 A CN102236449 A CN 102236449A
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Abstract
The invention relates to a panel control device and an operation method thereof. The panel control device provided by the invention comprises a display controller and a touch controller, wherein the display controller drives a touch display panel module to display images; the touch controller senses the touch event of the touch display panel module; and the sensing operation of the touch controller can be correspondingly carried out or inhabited according to the driving operation of the display controller.
Description
Technical field
The present invention relates to a kind of contactor control device, particularly relate to a kind of panel control device and its method of operating of touching display module.
Background technology
The display system that has touch controllable function is at present respectively finished for system independently with touch-control system and display system when putting into practice.System combination and to reduce cost be the constant always direction of electronic industry.When if the controller of the controller of touch-control system and display system is integrated into same integrated circuit, can effectively simplify the application circuit on the printed circuit board (PCB) (PCB).Generally speaking, touch-control system must senses touch and the electrical property difference when not touching.This electrical property difference is generally all very small, must suitable attention to the anti-system of noise.Yet under the development trend that touch-control system and display system are integrated mutually, touch-control system and display system interference cases each other is more and more serious.
Summary of the invention
The invention provides a kind of panel control device and its method of operating, with touch-control system and display system synchronization, to improve touch-control system and display system interference cases each other.
The embodiment of the invention proposes a kind of panel control device, comprises display controller and touching controller.Display controller drives the touching display module with show image.Touching controller sensing should be touched the touch event of display module.Wherein, according to the driving operation of this display controller, activation accordingly or forbidden energy should be touched the sense operation of controller.
The embodiment of the invention proposes a kind of method of operating of panel control device, comprising: drive a touching display module with show image; Sensing should be touched the touch event of display module; And according to described driving operation, the described sense operation of activation accordingly or forbidden energy.
Based on above-mentioned, the panel control device that the embodiment of the invention disclosed and its method of operating can be operated according to the driving of display controller, and activation accordingly or forbidden energy should be touched the sense operation of controller.Therefore, the panel control device that the embodiment of the invention disclosed and its method of operating can be improved touch-control system and display system interference cases each other with touch-control system and display system synchronization.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and the speech accompanying drawing is described in detail as follows.
Description of drawings
Fig. 1 illustrates the input data of general display system.
Fig. 2 is the high-level schematic functional block diagram that a kind of panel control device is described according to the embodiment of the invention.
Fig. 3 is the sequential relationship according to embodiment of the invention explanation polarity control signal and driving voltage.
Fig. 4 is the sequential relationship according to embodiment of the invention explanation line latch signal and driving voltage.
Fig. 5 is the method for operating that a kind of panel control device is described according to the embodiment of the invention.
The reference numeral explanation
200: the touching display module
210: the touching controller
220: display controller
C: touch coordinate
D: pixel data
EN: enable signal
LD: line latch signal
LD ', POL ': inhibit signal
POL: polarity control signal
S510～S530: the operation steps of panel control device
T1: during the reversal of poles
T2: during the data-switching
Vcom: common voltage
V
D: driving voltage
Embodiment
General display system, level all has fixing cycle and pattern with vertical display message and control information, and touch-control system also is to calculate position of touch according to level with vertical detection information.Following examples are touch-control system and display system synchronization, and do preferable arrangement at application characteristic and function.Especially, when the display controller of touch-control system touching controller and display system was integrated in mutually same integrated circuit, following embodiment improved that effects of jamming is more obvious mutually between touch-control system and the display system.
On the other hand, when display panel and contact panel were further integrated, when promptly being integrated into same technology, display unit (Display cell) was nearer to the distance of touch control detection assembly (as electric capacity), disturbs also more remarkable relatively.Concerning such touch-control system, the noise that display system is brought can be bigger.So, utilize the running of synchronous touch-control system and display system, avoid interference each other also just more important.
Fig. 1 illustrates the input data of general display system.General display system is to utilize vertical synchronizing signal (Vsync) to define the time slot of picture (Frame), has then defined a plurality of lines time slot of (being called sweep trace or horizontal line) with a plurality of horizontal-drive signals (Hsync) in a picture.Each picture (Frame) all has during the blank screen (Frame Blanking), during each all wired blank of bar line (Line) (LineBlanking).The running of conventional display system is pixel data to be stored one by one between pixel data (Pixel data) transmission period by display controller Controlling Source driver (Source Driver).When having stored the pixel data of a line, display controller can side by side will pass out to display panel with respect to the current potential of pixel data by the Controlling Source driver, and the sequential of the gate drivers of arranging in pairs or groups again (Gate Driver) makes display panel show corresponding image.So the running program of image display system is that certain sequence and cycle are arranged, and the power consumption of corresponding display system circuit also has certain sequence and cycle.The reversal of poles pattern that display system adopted (Inversion mode) has certain sequence and cycle to the power consumption of system too.
Fig. 2 is the high-level schematic functional block diagram that a kind of panel control device is described according to the embodiment of the invention.The panel control device comprises touching controller (touch controller) 210 and display controller (displaycontroller) 220.Touching display module 200 comprises display panel and contact panel among Fig. 2.This display panel and contact panel can be two panels independently, also can be to be integrated into single panel.
Display controller 220 receives pixel data D, and by the display panel (hereinafter to be referred as drive operate) of source electrode driver with gate driver drive touching display module 200, so that the display panel show image.According to the product design demand, aforementioned source electrode driver and gate drivers can be disposed in the touching display module 200, also can be disposed in the display controller 220.Touching controller 210 sensings should be touched the touch event (hereinafter to be referred as sense operation) of display module 200, and output touch coordinate C.
According to the driving operation of display controller 220, the sense operation of touching controller 210 can be by activation accordingly (enable) or forbidden energy (disable).That is to say, when touch-control system and display system can synchronous operations, touch-control system can utilize less etc. the appropriate time section of more not power consumption of display system or noise, for example during line interregnum or the blank screen, the touch of carrying out contact panel detects, to reach the noise minimum and to obtain more accurate detected value (touch coordinate C).Relatively, present embodiment can reduce the burden of subsequent treatment noise and reduce and differentiate by the difficulty of the detected value of noise.
In first embodiment, display controller 220 can be exported vertical synchronizing signal and give touching controller 210.As mentioned above, vertical synchronizing signal has defined during the blank screen in the picture.Display controller 220 can not drive touching display module 200 during this blank screen, just display system more can not disturbed touch-control system during this blank screen.Therefore, touching controller 210 can be according to vertical synchronizing signal during blank screen the described sense operation of activation, and during blank screen, finish the described sense operation of back forbidden energy.
In second embodiment, display controller 220 output horizontal-drive signals are given touching controller 210.As mentioned above, horizontal-drive signal has defined during a plurality of lines in the picture, and line interregnum between during adjacent two lines.Display controller 220 can not drive touching display module 200 at this line interregnum, and just display system more can not disturbed touch-control system at this line interregnum.Therefore, touching controller 210 can be according to this horizontal-drive signal in the described sense operation of line interregnum activation, and finishes the described sense operation of back forbidden energy at this line interregnum.
In the 3rd embodiment, display controller 220 output vertical synchronizing signals and horizontal-drive signal are given touching controller 210.Therefore, touching controller 210 can be according to this vertical synchronizing signal and this horizontal-drive signal and during blank screen or the described sense operation of line interregnum activation, and during this blank screen with the non-described sense operation of time forbidden energy outside this line interregnum.
In the 4th embodiment, display controller 220 output polarity control signal POL give touching controller 210.Display controller 220 also can be exported this polarity control signal POL and give source electrode driver (not illustrating).Fig. 3 is according to embodiment of the invention explanation polarity control signal POL and driving voltage V
DSequential relationship.When polarity control signal POL transition, source electrode driver can change the voltage V that drives touching display module 200 according to polarity control signal POL
DPolarity.Driving voltage V
DPolarity determine with reference to common voltage Vcom.At driving voltage V
DChange in polarity instantaneous (T1 during the reversal of poles for example shown in Figure 3), source electrode driver can expend more electric power and change driving voltage V
DThat is to say that display system T1 during this reversal of poles is easier to disturb touch-control system.Therefore, touching controller 210 can be according to polarity control signal POL described sense operation of T1 forbidden energy during reversal of poles, and T1 finishes the described sense operation of back activation during reversal of poles.Touching controller 210 can define T1 during the reversal of poles by any way.For example, touching controller 210 can postpone polarity control signal POL and obtain inhibit signal POL ', then polarity control signal POL and inhibit signal POL ' is carried out anti-mutual exclusion or (XNOR) computing and obtain enable signal EN, as shown in Figure 3.Touching controller 210 can come the described sense operation of activation/forbidden energy according to the level of this activation signal EN.
In the 5th embodiment, polarity control signal POL exports to display controller 220 by touching controller 210.Similar to the 4th embodiment, touching controller 210 described sense operation of T1 forbidden energy during reversal of poles, its detailed implementation content please refer to the 4th embodiment.Different is that present embodiment is to provide polarity control signal POL by touching controller 210.When touching controller 210 made this polarity control signal transition, display controller 220 can change driving voltage V according to polarity control signal POL
DPolarity.
In the 6th embodiment, display controller 220 output line latch signal LD give touching controller 210.Display controller 220 also can be exported this line latch signal LD and give source electrode driver (not illustrating).Fig. 4 is according to embodiment of the invention explanation line latch signal LD and driving voltage V
DSequential relationship.When pulse (pulse) appearred in line latch signal LD, source electrode driver can side by side pass out to display panel with the current potential with respect to pixel data, therefore drove the voltage V of touching display module 200
DCan be changed level (promptly changing GTG).At driving voltage V
DChange in level instantaneous (T2 during the data-switching for example shown in Figure 4), source electrode driver can expend more electric power and change driving voltage V
DThat is to say that display system T2 during this data-switching is easier to disturb touch-control system.Therefore, touching controller 210 is according to line latch signal LD described sense operation of T2 forbidden energy during data-switching, and T2 finishes the described sense operation of back activation during data-switching.Touching controller 210 is definition of data transition period T2 by any way.For example, touching controller 210 can lag line latch signal LD and obtain inhibit signal LD ', then with line latch signal LD and inhibit signal LD ' carries out or non-(NOR) computing and obtain enable signal EN, as shown in Figure 4.Touching controller 210 can come the described sense operation of activation/forbidden energy according to the level of this activation signal EN.In another embodiment, if the pulse width of line latch signal LD than data-switching during (as T2 during the data-switching of Fig. 4) big, then line latch signal LD can directly be brought the disable signal (being the inversion signal of enable signal EN) as the described sense operation of control, and omits the computing of aforementioned delay operation AOI.
In the 7th embodiment, line latch signal LD exports to display controller 220 by touching controller 210.Similar to the 6th embodiment, touching controller 210 described sense operation of T2 forbidden energy during data-switching, its detailed implementation content please refer to the 4th embodiment.Different is that present embodiment is to provide line latch signal LD by touching controller 210.When the line latch signal LD that has a pulse when the output of touching controller 210 gave display controller 220, display controller 220 can corresponding change driving voltage V
DLevel.
In the 8th embodiment, display controller 220 can be given touching controller 210 by output enable signal EN.That is to say that display controller 220 can carry out aforementioned any one or method that a plurality of embodiment disclosed, gives touching controller 210 and produce enable signal EN.Touching controller 210 is the described sense operation of activation accordingly or forbidden energy according to enable signal EN.
At this comprehensive above-mentioned all embodiment, the method for operating of panel control device is described.Fig. 5 is the method for operating that a kind of panel control device is described according to the embodiment of the invention.In step S510, display controller 220 drives touching display module 200 with show image.In step S520, touching controller 210 is according to the driving of display controller 220 operation, whether determines activation or the described sense operation of forbidden energy accordingly.If the described sense operation of step S520 decision forbidden energy is then got back to step S510.If the described sense operation of step S520 decision activation is then touched controller 210 and is carried out step S530, with the touch event of sensing touching display module 200.The detailed embodiment of above-mentioned steps S520 has been illustrated among eight embodiment of aforementioned first embodiment to the, does not repeat them here.
In sum, above-mentioned panel control device that all embodiment disclose and its method of operating stated can be according to the driving operation of display controller 220, and the sense operation that activation accordingly or forbidden energy should touching controllers 210.Therefore, the panel control device that these embodiment disclosed and its method of operating can be improved touch-control system and display system interference cases each other with touch-control system and display system synchronization.
Though the present invention discloses as above with embodiment; right its is not that those skilled in the art is under the future that does not break away from the spirit and scope of the present invention in order to qualification the present invention; can do some changes and retouching, so protection scope of the present invention is as the criterion with the application's claim.
Claims (15)
1. panel control device comprises:
One display controller drives a touching display module with show image; And
One touching controller, sensing should be touched the touch event of display module, and wherein according to the driving operation of this display controller, activation accordingly or forbidden energy are somebody's turn to do the sense operation of touching controller.
2. panel control device as claimed in claim 1, wherein this display controller is exported a vertical synchronizing signal and is touched controller to this, and should touch controller according to this vertical synchronizing signal described sense operation of activation during a blank screen.
3. panel control device as claimed in claim 1, wherein this display controller is exported a horizontal-drive signal and is touched controller to this, and should the touching controller according to this horizontal-drive signal in the described sense operation of a line interregnum activation.
4. panel control device as claimed in claim 1, wherein this display controller is exported a vertical synchronizing signal and a horizontal-drive signal is touched controller to this, and should touching controller according to this vertical synchronizing signal and this horizontal-drive signal during the vertical blank of a picture or the described sense operation of horizontal interregnum activation of a line.
5. panel control device as claimed in claim 1, wherein this display controller is exported a polarity control signal and is touched controller to this, and should the touching controller according to this polarity control signal described sense operation of forbidden energy during a reversal of poles, and non-during this reversal of poles the described sense operation of activation.
6. panel control device as claimed in claim 1, wherein this touching controller is exported a polarity control signal and is given this display controller, and should touch controller described sense operation of forbidden energy during a reversal of poles, and makes this polarity control signal transition.
7. panel control device as claimed in claim 1, wherein this display controller is exported a line latch signal and is touched controller to this, and should the touching controller according to this line latch signal described sense operation of forbidden energy during a data-switching, and non-during this data-switching the described sense operation of activation.
8. panel control device as claimed in claim 1 wherein should be touched controller described sense operation of forbidden energy during a data-switching, and exported a line latch signal and give this display controller.
9. panel control device as claimed in claim 1, wherein this display controller is exported an activation signal and is touched controller to this, and should touch controller according to this enable signal, the described sense operation of activation accordingly or forbidden energy.
10. the method for operating of a panel control device comprises:
Drive a touching display module with show image;
Sensing should be touched the touch event of display module; And
According to described driving operation, the described sense operation of activation accordingly or forbidden energy.
11. as the method for operating of panel control device as described in the claim 10, wherein the step of activation or the described sense operation of forbidden energy comprises:
According to a vertical synchronizing signal described sense operation of activation during a blank screen.
12. as the method for operating of panel control device as described in the claim 10, wherein the step of activation or the described sense operation of forbidden energy comprises:
Foundation one horizontal-drive signal is in the described sense operation of a line interregnum activation.
13. as the method for operating of panel control device as described in the claim 10, wherein the step of activation or the described sense operation of forbidden energy comprises:
According to a vertical synchronizing signal and a horizontal-drive signal during a blank screen or the described sense operation of a line interregnum activation.
14. as the method for operating of panel control device as described in the claim 10, wherein the step of activation or the described sense operation of forbidden energy comprises:
According to a polarity control signal described sense operation of forbidden energy during a reversal of poles; And
Non-during this reversal of poles the described sense operation of activation.
15. as the method for operating of panel control device as described in the claim 10, wherein the step of activation or the described sense operation of forbidden energy comprises:
According to a line latch signal described sense operation of forbidden energy during a data-switching; And
Non-during this data-switching the described sense operation of activation.
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| CN2010101692849A CN102236449A (en) | 2010-04-29 | 2010-04-29 | Panel control device and operation method thereof |
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| CN2010101692849A CN102236449A (en) | 2010-04-29 | 2010-04-29 | Panel control device and operation method thereof |
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| CN103236240A (en) * | 2012-08-31 | 2013-08-07 | 友达光电股份有限公司 | Driving method and driving system capable of stopping display corresponding to touch control induction dynamic state |
| CN104020870A (en) * | 2013-02-28 | 2014-09-03 | 晨星半导体股份有限公司 | Touch detection method and device thereof |
| US9218779B2 (en) | 2012-06-15 | 2015-12-22 | Lg Display Co., Ltd. | Liquid crystal display device with improved integrated touch panel and driving method thereof |
| CN111402772A (en) * | 2019-01-02 | 2020-07-10 | 联咏科技股份有限公司 | Touch display driver system and timing control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9218779B2 (en) | 2012-06-15 | 2015-12-22 | Lg Display Co., Ltd. | Liquid crystal display device with improved integrated touch panel and driving method thereof |
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| CN111402772A (en) * | 2019-01-02 | 2020-07-10 | 联咏科技股份有限公司 | Touch display driver system and timing control method thereof |
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