CN102298892B - Display system capable of eliminating afterimage, and method for the same - Google Patents
Display system capable of eliminating afterimage, and method for the same Download PDFInfo
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- CN102298892B CN102298892B CN201010207800.2A CN201010207800A CN102298892B CN 102298892 B CN102298892 B CN 102298892B CN 201010207800 A CN201010207800 A CN 201010207800A CN 102298892 B CN102298892 B CN 102298892B
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Abstract
The invention provides a display system and a method for the same, which are used for eliminating an afterimage while displaying an image on a display screen of the display system. The display system comprises the display screen, a shared signal source and a raster. The display screen is used for displaying images; the shared signal source is electrically connected with the display screen and used for supplying a shared voltage signal for the display screen, so as to enable the display screen to display the image; and the raster is started when the shared voltage signal is steady, and is closed before the state of the shared voltage signal is changed.
Description
Technical field
The present invention relates to a kind of display system and method thereof, display system and the method thereof of ghost eliminated in espespecially a kind of open and close by grating.
Background technology
At display screen (for example, LCDs, electrophoretic display panel) upper while showing image, because while changing between image and image, display screen at present shown image is not converted to next image at once, but after one period of reaction time, be just converted to next image.Therefore, cause display screen when showing image, still the ghost of residual previous image.
The so-called reaction time is exactly in display screen, give after the corresponding common voltage of each pixel, common voltage not reaches stable state at once, but after continuing for some time, just can reach stable state, that is common voltage drives pixel bright or turn the dark needed time by bright by blackout.In this reaction time that the 25ms of general normal theory, 16ms just refer to, if the reaction time is shorter, user does not more have the sensation of ghost when seeing dynamic image.
Please refer to Fig. 1, Fig. 1 is the reaction time having for display screen that DESCRIPTION OF THE PRIOR ART display system comprises, causes display screen showing image 102,104,106 and occurring the schematic diagram of ghost at 108 o'clock.As shown in Figure 1, observer wishes that the image sequence that display screen shows is image 102 → image 104 → image 106 → image 108.But actual displayed screen is when showing image 102 → image 104, image 104 → image 106 or image 106 → image 108, because common voltage signal must have one period of reaction time transition to complete in image conversion process, so display screen is to show transfer image acquisition 103,105 and 107 within this period of reaction time, cause incorrect to image judgement of observer.
In the prior art, be by the mode of inserting black image, to remove the ghost that previous image causes to show again new image, avoid above-mentioned ghost phenomena to occur.But it is slow compared with the original figure frame rate of display screen by the mode of inserting black image, to remove the figure frame rate (frame rate) that ghost can make observer perceive.
Summary of the invention
One embodiment of the present of invention provide a kind of display system of eliminating ghost.This display system comprises display screen, common voltage source and grating.This display screen is to show image; This common voltage signal source is to be electrically connected on this display screen, in order to for should display screen common voltage signal, so that this display screen is shown this image; This grating is in order to open when this common voltage signal stabilization, and closes before this common voltage signal transition.
Another embodiment of the present invention provides a kind of method of eliminating the ghost of display system.The method comprises provides common voltage signal to display screen, so that this shows screen display image; And when this common voltage signal stabilization, open grating, and close this grating before this common voltage signal transition.
Accompanying drawing explanation
Fig. 1 is the reaction time having for display screen that DESCRIPTION OF THE PRIOR ART display system comprises, causes display screen when showing image, to occur the schematic diagram of ghost.
Fig. 2 is to be a kind of schematic diagram of eliminating the display system of ghost of one embodiment of the present of invention explanation.
Fig. 3 is to be a kind of schematic diagram of eliminating the display system of ghost of another embodiment of the present invention explanation.
Fig. 4 is to be a kind of schematic diagram of eliminating the display system of ghost of another embodiment of the present invention explanation.
Fig. 5 is the schematic diagram of the image that presents after by display system for key diagram picture.
Fig. 6 is the schematic diagram of the image that presents after by display system for key diagram picture.
Fig. 7 be for the present invention also an embodiment a kind of process flow diagram of method of the ghost of eliminating display system is described.
Wherein, description of reference numerals is as follows:
102,104,106,108,2022,501, image
520、521、522、523、524、525、526、
527、529、531、533、602、604、606、
608、616、617、618、619
103,105,107,505,509,513,601, transfer image acquisition
605、609、613
200,300,400 display systems
202 display screens
204 common voltage signal sources
206 gratings
208 sensors
70-76 step
Embodiment
Please refer to Fig. 2, Fig. 2 is to be a kind of schematic diagram of eliminating the display system 200 of ghost of one embodiment of the present of invention explanation.Display system 200 comprises display screen 202, common voltage signal source 204, grating 206 and sensor 208.Display screen 202 is to show image 2022, and wherein display screen 202 is to be LCDs, electrophoretic display panel or micro electronmechanical display screen; Common voltage source 204 is to be electrically connected on display screen 202, in order to supply display screen 202 common voltage signals, so that display screen 202 is shown image 2022; Grating 206 is in order to open when the common voltage signal stabilization, and close before the transition of common voltage signal, when grating 206 is changed between opening and closing, also need the transition time, but because 206 needs of grating open and close, so the reaction time of the transition time comparability display screen 202 of grating 206 is short; 208 of sensors are in order to feel shown image 2022 on display screen 202 by grating 206, and wherein sensor 208 is for observer's eyes or has the device of sensing function.
As shown in Figure 2, grating 206 is mounted between display screen 202 and sensor 208, and grating 206 is for LCDs, can controls the material of printing opacity degree.Please refer to Fig. 3 and Fig. 4, Fig. 3 is to be a kind of schematic diagram of eliminating the display system 300 of ghost of another embodiment of the present invention explanation.The grating 206 of display system 300 is mounted in a side of display screen 202, and other principle of operation of display system 300 is identical with display system 200, at this, is no longer repeated in this description.Fig. 4 is to be a kind of schematic diagram of eliminating the display system 400 of ghost of another embodiment of the present invention explanation.The grating 206 of display system 400 is shutter glasses, and the material of shutter glasses is for liquid crystal or can controls the material of printing opacity degree, and other principle of operation of display system 400 is identical with display system 200, at this, is no longer repeated in this description.
Please refer to Fig. 5, Fig. 5 be for key diagram as 502,504,506 and 508 by the schematic diagram of rear the presented image of display system 200.As shown in Figure 5, on time shaft, the common voltage signal distinguishing Wei16 district that common voltage source 204 is provided, therefore, in the transition of common voltage signal, also unstabilized the 5th district, the 9th district He 13rd district it will be appreciated that the transfer image acquisition 505,509 and 513 in the shown image of display screen 202, as for the shown image 501 of display screen 202, because before image 502 without any image, so image 501 there will not be the situation that looks like transfer image acquisition 505,509 and 513.Therefore, as long as there is transfer image acquisition 505,509 and closing completely in grating 206 at 513 o'clock, the image that sensor 208 is seen by grating 206 will not have transfer image acquisition 505,509 and 513, and sensor 208 will only can be seen image 520,521,522,523,524,525,526,527,529,531 and 533.As shown in Figure 5, image 520,522,524 and 526 is by the 3rd stable district of common voltage signal transition, the 7th district, He 15th district, 11 district, and 3rd district, the 7th district, He 15th district, 11 district, also transition is stable for grating 206, so the image 520,522,524 and 526 that sensor 208 is seen is correct images that brightness is larger.Image 521,523,525,527,529,531 and 533 is by the 4th stable district of common voltage signal transition, the 6th district, the 8th district, 10 district, 12 district, He 16th district, 14 district, but grating 206 4th district, the 6th district, the 8th district, 10 district, 12 district, He 16th district, 14 district be in the transition of open and close during, so the image 521,523,525,527,529,531 and 533 that sensor 208 is seen can be the less correct images of brightness.
Because the shut-in time of grating 206 is longer, can make brightness of image decline the more, so adjust the dutycycle (duty cycle) of the open and close of grating 206,206 image transition periods at display screen 202 of grating (that is during the transition of common voltage signal) are closed, and during common voltage signal stabilization, allow grating 206 open as much as possible.Please refer to Fig. 6, Fig. 6 be for key diagram as 602,604,606 and 608 by the schematic diagram of rear the presented image of display system 200.As shown in Figure 6, on time shaft, the common voltage signal distinguishing that common voltage source 204 is provided is 8th district.Therefore,, in the 1st district, the 3rd district, the 5th district He 7th district of the transition of common voltage signal, grating 206 is closed, so sensor 208 can not seen transfer image acquisition 601,605,609 and 613; In the 2nd district, the 4th district, the 6th district He 8th district of common voltage signal stabilization, grating 206 is opened, so the image 616,617,618 and 619 that sensor 208 is seen can be the correct images that brightness is larger.
Please refer to Fig. 7, Fig. 7 be for the present invention also an embodiment a kind of process flow diagram of method of the ghost of eliminating display system is described.The method of Fig. 7 is that details are as follows for the step of Fig. 7 by display system 200 explanations shown in Fig. 2:
Step 70: start;
Step 72: provide common voltage signal to display screen 202, so that show image on display screen 202;
Step 74: open grating 206 when common voltage signal stabilization, and close grating 206 before the transition of common voltage signal;
Step 76: finish.
Compared to prior art, display system provided by the present invention because of the transition of common voltage signal, causes the transfer image acquisition of display screen demonstration by grating 206 filterings.Make sensor 208 see brightness more greatly and do not have the image of ghost.In addition, display system provided by the present invention is not because used the mode of inserting black image to remove the ghost that previous image causes, so can maintain the original figure frame rate of display screen.
The foregoing is only the preferred embodiments of the present invention, all equalizations of doing according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. can eliminate a display system for ghost, comprise:
Display screen, in order to show image; And
Common signal source, is electrically connected on this display screen, in order to for should display screen common voltage signal, so that this display screen is shown this image;
This display system is also characterised in that and comprises:
Grating, all opens in order to continuing when this common voltage signal stabilization, and before this common voltage signal transition Close All.
2. display system as claimed in claim 1, is characterized in that, this display screen is LCDs.
3. display system as claimed in claim 1, is characterized in that, this display screen is electrophoretic display panel.
4. display system as claimed in claim 1, is characterized in that, this display screen is micro electronmechanical display screen.
5. display system as claimed in claim 1, is characterized in that, this display system also comprises sensor.
6. display system as claimed in claim 5, is characterized in that, this grating is mounted between this display screen and this sensor.
7. display system as claimed in claim 1, is characterized in that, this grating is mounted in a side of this display screen.
8. display system as claimed in claim 1, is characterized in that, this grating is LCDs.
9. display system as claimed in claim 1, is characterized in that, this grating is the material that can control printing opacity degree.
10. display system as claimed in claim 1, is characterized in that, this grating is shutter glasses.
11. 1 kinds of methods of eliminating the ghost of display system, comprising:
To display screen, provide common voltage signal source, so that this shows screen display image; And
Also the method is characterized in that and comprise:
When this common voltage signal stabilization, continue all to open gratings, and before this common voltage signal transition this grating of Close All.
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| CN201010207800.2A CN102298892B (en) | 2010-06-22 | 2010-06-22 | Display system capable of eliminating afterimage, and method for the same |
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| CN102298892B true CN102298892B (en) | 2014-08-06 |
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| CN107748439B (en) * | 2017-10-19 | 2020-07-17 | 成都理想智美科技有限公司 | Display control method and head-mounted display device |
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| JP2001117067A (en) * | 1999-10-22 | 2001-04-27 | Toshiba Corp | Video display device |
| CN1388508A (en) * | 2001-05-25 | 2003-01-01 | Lg.飞利浦Lcd有限公司 | Liquid crystal display with raster and method for driving the same liquid crystal display |
| TW200506452A (en) * | 2003-08-11 | 2005-02-16 | Hannstar Display Corp | Liquid crystal display (LCD) having an electro-optical light shutter |
| CN1636411A (en) * | 2002-02-20 | 2005-07-06 | 皇家飞利浦电子股份有限公司 | Method and apparatus for automatically adjusting the raster in projection television receivers |
| CN101551984A (en) * | 2009-03-23 | 2009-10-07 | 深圳超多维光电子有限公司 | Time division multiple visual display device and time division multiple visual display method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101255306B1 (en) * | 2006-06-28 | 2013-04-15 | 엘지디스플레이 주식회사 | Dual view display device and method for driving the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001117067A (en) * | 1999-10-22 | 2001-04-27 | Toshiba Corp | Video display device |
| CN1388508A (en) * | 2001-05-25 | 2003-01-01 | Lg.飞利浦Lcd有限公司 | Liquid crystal display with raster and method for driving the same liquid crystal display |
| CN1636411A (en) * | 2002-02-20 | 2005-07-06 | 皇家飞利浦电子股份有限公司 | Method and apparatus for automatically adjusting the raster in projection television receivers |
| TW200506452A (en) * | 2003-08-11 | 2005-02-16 | Hannstar Display Corp | Liquid crystal display (LCD) having an electro-optical light shutter |
| CN101551984A (en) * | 2009-03-23 | 2009-10-07 | 深圳超多维光电子有限公司 | Time division multiple visual display device and time division multiple visual display method |
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