CN102096531A - Operation method for optical touch display device - Google Patents
Operation method for optical touch display device Download PDFInfo
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- CN102096531A CN102096531A CN2011100403403A CN201110040340A CN102096531A CN 102096531 A CN102096531 A CN 102096531A CN 2011100403403 A CN2011100403403 A CN 2011100403403A CN 201110040340 A CN201110040340 A CN 201110040340A CN 102096531 A CN102096531 A CN 102096531A
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- display device
- optical touch
- touch control
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Abstract
The invention relates to an operation method for an optical touch display device, wherein the optical touch display device comprises an optical touch module and a display having a backlight module and a display panel. The operation method for the optical touch display device comprises the following steps of: during a period of touch scanning, starting the optical touch module for detecting a touch point; and during a period of frame display, starting the backlight module for displaying the frames; wherein the period of frame display is not superposed with the period of touch scanning. Thereby, the detection of the optical touch module is avoided from the influence of the light source of the backlight module.
Description
[technical field]
The invention relates to a kind of method of operating, and particularly about a kind of method of operating of optical touch control display device.
[background technology]
Along with the progress of photoelectricity science and technology, adopt slide-mouse to come the mode of the object in controlling computer and the screen can't satisfy user's demand, therefore, just be developed gradually than the humanized method of slide-mouse control.In the method for these hommizations, approach the mankind's operating habit most in the mode of finger touch.In addition, traditional notebook computer is normally controlled vernier by being positioned at button other Trackpad and tracing point (track point) if under the situation of external slide-mouse not.Yet for general user, the flexibility ratio of utilizing other Trackpad of button or tracing point to control vernier may be not so good as to use slide-mouse, and the contact panel that is disposed on the screen can solve such problem.
General now contact panel design roughly can be divided into resistance-type, condenser type, optical profile type, sound wave type and electromagnetic type etc.With the optical touch control display device, general common display and the optical touch control module of comprising, wherein display comprises module backlight and display panel.The optical touch control module can be provided by the light that is provided, and whether crested judges whether the user carries out touch-control, and judges the position that the user touches according to the position of the light of crested.Yet,,, and then may cause the optical touch control module can't judge correctly whether the user carries out touch-control so that the optical touch control module can be subjected to the influence of the light that module backlight provides because the module backlight of display can provide light equally.
[summary of the invention]
The invention provides a kind of method of operating of optical touch control display device, can avoid the light source of module backlight to influence the detecting of optical touch control module.
The present invention proposes a kind of method of operating of optical touch control display device, it is characterized in that: wherein the optical touch control display device comprises the optical touch control module and has the display of module backlight and display panel.The method of operating of optical touch control display device comprises the following steps.In touch-control scan period, open the optical touch control module to carry out touch point detection.During picture shows, open module backlight and show to carry out picture.Wherein, it is not overlapping during picture shows with touch-control scan period.
In an embodiment of the present invention, during above-mentioned touch-control scan period is positioned at and writes in order to the picture that a plurality of display datas is write display panel.
In an embodiment of the present invention, during above-mentioned touch-control scan period writes smaller or equal to picture.
In an embodiment of the present invention, above-mentioned picture is positioned at during the vertical blank of optical touch control display device during showing.
In an embodiment of the present invention, during above-mentioned picture shows smaller or equal to during the vertical blank.
In an embodiment of the present invention, during above-mentioned picture writes with vertical blank during summation equal the picture of optical touch control display device during.
In an embodiment of the present invention, aforementioned display device is a color sequence displayer.
In an embodiment of the present invention, above-mentioned touch-control scan period comprises a plurality of sub-touch-control scan period, and this a little touch-control scan period lays respectively at during a plurality of sprites that write display panel respectively in order to a plurality of display datas with a plurality of sprites write.
In an embodiment of the present invention, during above-mentioned each sub-touch-control scan period writes smaller or equal to the sprite of correspondence.
In an embodiment of the present invention, during showing, above-mentioned picture comprises that these sprites lay respectively at during a plurality of vertical blanks of optical touch control display device during showing during a plurality of sprites demonstrations.
In an embodiment of the present invention, during the vertical blank smaller or equal to correspondence during above-mentioned each sprite shows.
In an embodiment of the present invention, during above-mentioned these sprites write with these vertical blanks during summation equal the picture of optical touch control display device during.
In an embodiment of the present invention, above-mentioned module backlight is the scanning backlight module.
Based on above-mentioned, the method for operating of the optical touch control display device of the embodiment of the invention can be opened the optical touch control module to carry out touch point detection in touch-control scan period, can open module backlight and show to carry out picture during picture shows.By this, can avoid the detecting of optical touch control module to be subjected to the influence of the light source of module backlight.
For the above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
[description of drawings]
Fig. 1 is the time sequential routine synoptic diagram according to the optical touch control display device of one embodiment of the invention.
Fig. 2 is the time sequential routine synoptic diagram according to the optical touch control display device of another embodiment of the present invention.
Fig. 3 is the process flow diagram according to the method for operating of the optical touch control display device of one embodiment of the invention.
[main element symbol description]
FD1: during picture shows
FR1, FR2: during the picture
FW1: during picture writes
SFD1 ~ SFD3: during sprite shows
SFW1 ~ SFW3: during sprite writes
STD1 ~ STD3: sub-touch-control scan period
TD1: touch-control scan period
VB1 ~ VB4: during the vertical blank
S310, S320: step
[embodiment]
Fig. 1 is the time sequential routine synoptic diagram according to the optical touch control display device of one embodiment of the invention.Please refer to Fig. 1, method of operating of the present invention is applicable to the optical touch control display device with optical touch control module and display, and wherein display comprises display panel and module backlight.In the present embodiment, during the picture FR1 comprise picture write during VB1 during FW1 and blank vertical (the vertical blanking).And in the present embodiment, writing to the display of just opening back of the body group module behind the display panel with picture is example, that is module backlight is the scanning backlight module.
Among the FW1, display panel can be opened (ON) and write in the display panel with a plurality of display datas with single picture during picture writes, and the optical touch control module can open carrying out the detecting of touch point, and module backlight can be closed (OFF).Among the VB1, display panel and optical touch control module can be closed during vertical blank, and module backlight can be opened so that (face) light source to be provided, and see through (face) light source and carry out picture and show.
According to above-mentioned, the optical touch control module open with carry out touch-control scanning during (being touch-control scan period TD1) can be arranged in picture and write during FW1 and equal picture and write during FW1, and module backlight open can be arranged in during the vertical blank VB1 and equal vertical blank with (being FD1 during picture shows) during carrying out that picture shows during VB1.Because FR1 during the picture that the summation of VB1 equaled during FW1 and the vertical blank during picture write, that is picture write during during FW1 and the vertical blank VB1 not overlapping, so FD1 is not overlapping during touch-control scan period TD1 and the picture demonstration.By this, when the optical touch control module carried out touch point detection, module backlight can not provide light source, was subjected to the influence of the light source of module backlight with the detecting of avoiding the optical touch control module.
In the present embodiment, suppose touch-control scan period TD1 equal picture and write during FW1, FD1 equaled VB1 during the vertical blank during picture showed, but in other embodiments, FW1 during touch-control scan period TD1 can write less than picture, and picture show during FD1 can be less than VB1 during the vertical blank, this can know the knowledgeable's design and decide that the present invention is not as limit usually according to circuit design demand or this area.In addition, if aforementioned display device is a three-dimensional display, then FR1 can show left eye picture or right eye picture during the picture, that is FR1 can be for during the left eye picture or during the right eye picture during the picture.
Fig. 2 is the time sequential routine synoptic diagram according to the optical touch control display device of another embodiment of the present invention.Please refer to Fig. 1 and Fig. 2, be that to write a picture with display panel in during the picture be example in the embodiment in figure 1, but difference according to display mode, picture may be divided into a plurality of sprites in during a picture and write display panel respectively, and present embodiment can be an example with the display that writes a plurality of sprites in during the picture, that is have in (as FR2) during the picture a plurality of sprites write during (as SFW1 ~ SFW3) and during a plurality of vertical blank (as VB2 ~ VB4).And, the optical touch control module carries out that touch-control scan period of touch point detection can be corresponding be divided into a plurality of sub-touch-control scan period (as STD1 ~ STD3), and the picture of display can be corresponding during showing be divided into a plurality of sprites and show during (as SFD1 ~ SFD3).
In the present embodiment, display is that the color sequence displayer with three colour fields is an example, and during the picture FR2 can comprise sprite write during SFW1 ~ SFW3 and blank vertical during VB2 ~ VB4, during wherein sprite writes during SFW1 ~ SFW3 and the vertical blank summation of VB2 ~ VB4 equal FR2 during the picture.During sprite writes among SFW1 ~ SFW3, display panel can be opened, respectively the display data of different sprites (as red field sprite, green field sprite or blue field sprite) being write display panel, and the optical touch control module can open, and module backlight can be closed.Among VB2 ~ VB4, display panel and optical touch control module can be closed during vertical blank, and module backlight can be opened to carry out the picture demonstration.
According to above-mentioned, during sub-touch-control scan period STD1 can be arranged in picture and writes SFW1 and equal sprite and write during SFW1, during sub-touch-control scan period STD2 can be arranged in picture and writes SFW2 and equal sprite and write during SFW2, during sub-touch-control scan period STD3 can be arranged in picture and writes SFW3 and equal sprite and write during SFW3.VB2 during SFD1 can be arranged in during the vertical blank VB2 and equal vertical blank during sprite showed, VB3 during SFD2 can be arranged in during the vertical blank VB3 and equal vertical blank during sprite showed, VB4 during SFD3 can be arranged in during the vertical blank VB4 and equal vertical blank during sprite showed.By this, can avoid the detecting of optical touch control module to be subjected to the influence of the light source of module backlight.
In the present embodiment, suppose sub-touch-control scan period STD1 ~ STD3 equal sprite respectively and write during SFW1 ~ SFW3, SFD1 ~ SFD3 equaled VB2 ~ VB4 during the vertical blank respectively during sprite showed, but in other embodiments, SFW1 ~ SFW3 during sub-touch-control scan period STD1 ~ STD3 can write less than sprite respectively, and SFD1 ~ SFD3 can be respectively less than VB2 ~ VB4 during the vertical blank during the sprite demonstration.In addition, the foregoing description is that the color sequence displayer with three colour fields is an example, and the color sequence displayer of different colour field number (as four or five) can be understood voluntarily according to above-mentioned, then repeats no more at this.
According to above-mentioned, can converge whole is the method for operating of an optical touch control display device.Fig. 3 is the process flow diagram according to the method for operating of the optical touch control display device of one embodiment of the invention.Please refer to Fig. 3,, open the optical touch control module to carry out touch point detection (step S310) in touch-control scan period.During picture shows, open module backlight and show (step S320) to carry out picture, not overlapping during wherein picture shows with touch-control scan period.Wherein, the details of above-mentioned steps can then repeat no more at this with reference to the embodiment of Fig. 1 and Fig. 2.
In sum, the method for operating of the optical touch control display device of the embodiment of the invention can be opened the optical touch control module to carry out touch point detection in touch-control scan period, can open module backlight and show to carry out picture during picture shows.By this, can avoid the detecting of optical touch control module to be subjected to the influence of the light source of module backlight.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; do not breaking away from the spirit and scope of the invention; when doing a little change and retouching, so protection domain of the present invention attached claim person of defining after looking is as the criterion.
Claims (13)
1. the method for operating of an optical touch control display device, it is characterized in that: this optical touch control display device comprises an optical touch control module and has a display of a module backlight and a display panel that the method for operating of this optical touch control display device comprises:
In touch-control scan period, open this optical touch control module to carry out touch point detection; And
During a picture shows, opens this module backlight to carry out the picture demonstration, wherein not overlapping during this picture demonstration with this touch-control scan period.
2. the method for operating of optical touch control display device according to claim 1 is characterized in that: during wherein this touch-control scan period is positioned at and writes in order to a picture that a plurality of display datas is write this display panel.
3. the method for operating of optical touch control display device according to claim 2 is characterized in that: during wherein this touch-control scan period writes smaller or equal to this picture.
4. the method for operating of optical touch control display device according to claim 2 is characterized in that: wherein this picture is positioned at during the vertical blank of this optical touch control display device during showing.
5. the method for operating of optical touch control display device according to claim 4 is characterized in that: during wherein this picture shows smaller or equal to during this vertical blank.
6. the method for operating of optical touch control display device according to claim 4 is characterized in that: during wherein this picture writes with this vertical blank during summation equal a picture of this optical touch control display device during.
7. the method for operating of optical touch control display device according to claim 1 is characterized in that: wherein this display is a color sequence displayer.
8. the method for operating of optical touch control display device according to claim 7, it is characterized in that: wherein this touch-control scan period comprises a plurality of sub-touch-control scan period, and this a little touch-control scan period lays respectively at during a plurality of sprites that write this display panel respectively in order to a plurality of display datas with a plurality of sprites write.
9. the method for operating of optical touch control display device according to claim 8 is characterized in that: during wherein each this a little touch-control scan period writes smaller or equal to the sprite of correspondence.
10. the method for operating of optical touch control display device according to claim 8, it is characterized in that: during comprising that a plurality of sprites show during wherein this picture shows, those sprites lay respectively at during a plurality of vertical blanks of this optical touch control display device during showing.
11. the method for operating of optical touch control display device according to claim 10 is characterized in that: during the vertical blank smaller or equal to correspondence during wherein each those sprite shows.
12. the method for operating of optical touch control display device according to claim 10 is characterized in that: during wherein those sprites write with those vertical blanks during summation equal a picture of this optical touch control display device during.
13. the method for operating of optical touch control display device according to claim 1 is characterized in that: wherein this module backlight is an one scan formula module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100403403A CN102096531A (en) | 2011-02-18 | 2011-02-18 | Operation method for optical touch display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100403403A CN102096531A (en) | 2011-02-18 | 2011-02-18 | Operation method for optical touch display device |
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| CN102096531A true CN102096531A (en) | 2011-06-15 |
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| CN2011100403403A Pending CN102096531A (en) | 2011-02-18 | 2011-02-18 | Operation method for optical touch display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662528A (en) * | 2011-10-04 | 2012-09-12 | 友达光电股份有限公司 | Light-sensing touch sensing system, device and touch sensing method thereof |
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| US20060256093A1 (en) * | 2005-05-12 | 2006-11-16 | Takehide Furukawa | Display device with a touch screen |
| US20080074401A1 (en) * | 2006-09-26 | 2008-03-27 | Lg. Philips Lcd Co. Ltd. | Display with infrared backlight source and multi-touch sensing function |
| CN101266529A (en) * | 2007-03-12 | 2008-09-17 | 精工爱普生株式会社 | Display device and electronic device |
| CN101281446A (en) * | 2008-05-28 | 2008-10-08 | 友达光电股份有限公司 | Optical reflection type touching control panel and pixel as well as system |
| CN201497971U (en) * | 2009-07-31 | 2010-06-02 | 深圳市易优特科技有限公司 | Light resistance circuit of infrared touch screen |
| CN101896858A (en) * | 2007-12-20 | 2010-11-24 | 夏普株式会社 | Display device having optical sensor |
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2011
- 2011-02-18 CN CN2011100403403A patent/CN102096531A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060256093A1 (en) * | 2005-05-12 | 2006-11-16 | Takehide Furukawa | Display device with a touch screen |
| US20080074401A1 (en) * | 2006-09-26 | 2008-03-27 | Lg. Philips Lcd Co. Ltd. | Display with infrared backlight source and multi-touch sensing function |
| CN101266529A (en) * | 2007-03-12 | 2008-09-17 | 精工爱普生株式会社 | Display device and electronic device |
| CN101896858A (en) * | 2007-12-20 | 2010-11-24 | 夏普株式会社 | Display device having optical sensor |
| CN101281446A (en) * | 2008-05-28 | 2008-10-08 | 友达光电股份有限公司 | Optical reflection type touching control panel and pixel as well as system |
| CN201497971U (en) * | 2009-07-31 | 2010-06-02 | 深圳市易优特科技有限公司 | Light resistance circuit of infrared touch screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102662528A (en) * | 2011-10-04 | 2012-09-12 | 友达光电股份有限公司 | Light-sensing touch sensing system, device and touch sensing method thereof |
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Application publication date: 20110615 |