CN1815314A - Method for displaying liquid crystal display panel dynamic image - Google Patents

Method for displaying liquid crystal display panel dynamic image Download PDF

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Publication number
CN1815314A
CN1815314A CN 200610058508 CN200610058508A CN1815314A CN 1815314 A CN1815314 A CN 1815314A CN 200610058508 CN200610058508 CN 200610058508 CN 200610058508 A CN200610058508 A CN 200610058508A CN 1815314 A CN1815314 A CN 1815314A
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China
Prior art keywords
image
picture
frame cycle
white
lcd
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Granted
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CN 200610058508
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Chinese (zh)
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CN100380189C (en
Inventor
杨旭昌
张硕峰
陈水连
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Quanta Display Inc
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Quanta Display Inc
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Priority to CNB2006100585082A priority Critical patent/CN100380189C/en
Publication of CN1815314A publication Critical patent/CN1815314A/en
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Abstract

The method includes steps: using a liquid crystal display (LCD) faceplate displays a first image; displaying white or gray images after the first image being displayed; displaying second image follow-up the first image after the white or gray images being displayed. Inserting white or gray images improves phenomena of delayed image on LCD faceplate, and improves quality of displaying dynamic image greatly so as to raise representation of brightness on LCD faceplate in vision.

Description

The display packing of liquid crystal display panel dynamic image
Technical field
The invention relates to a kind of display packing of LCD, refer to a kind of display packing of motion image of LCD especially.
Background technology
Because LCD has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, so be widely used in mobile computer, personal digital assistant (personal digital assistant, PDA), on portable type such as digital camera and the video camera information products, LCD has replaced traditional cathode-ray tube (CRT) (cathode ray tube, CRT) display gradually.But LCD also has its shortcoming, because the restriction of liquid crystal molecule characteristic, when image data switches, must reverse liquid crystal molecule and change its orientation, so the situation that picture postpones can occur, especially when liquid crystal display displays one dynamic image, the phenomenon that this picture postpones can be more obvious.
The effective method of picture delay phenomenon that improves LCD is a response speed of accelerating liquid crystal material.Yet, the response speed of liquid crystal material has its limit, therefore the general technology that adopts the shadow picture to insert (blackimage insertion), insert black image at each frame between cycle, produce the fast-pulse mudulation effect similar to cathode-ray tube (CRT), human brain can this flicker of filtering also produce intermediate imagery automatically, reduces the visual impact that picture postpones.
Please refer to Fig. 1, Fig. 1 has illustrated and has inserted the method that solves the LCD picture delay phenomenon by the shadow picture in the prior art.In Fig. 1, the display panels that picture P1-Pn represents a LCD respectively shown picture when time point T1-Tn, picture B1-Bn is complete black picture, and the two adjacent time points of time point T1-Tn define frame cycle (frame period) F1-Fn in regular turn.In order to reduce the picture delay phenomenon of LCD, the settling mode of prior art is to insert to show a complete black picture between the normal show image in the normal show image in a frame cycle and next frame cycle.At first, each frame cycle with frame cycle F1-Fn is cut into two sub-frame cycle F1a-Fna and F1b-Fnb respectively earlier, the start time point of sub-frame cycle F1a-Fna is respectively T1-Tn, and the start time point of sub-frame cycle F1b-Fnb is respectively T1 '-Tn '.Then between the sub-frame cycle of frame cycle F1-Fn F1a-Fha, export normal display frame P1-Pn respectively, and at frame cycle F 1-F nSub-frame cycle F 1b-F NbBetween show complete black picture B 1-B n
Though the method for prior art shown in Figure 1 can be improved the phenomenon that LCD picture postpones,, so can reduce the brightness performance of display panels visually because each frame cycle all need be partitioned into a sub-frame cycle to show complete black picture.When spectators when viewing and admiring the image of picture P1-Pn because can the complete black picture B1-Bn of output between output picture P1-Pn, spectators can think that the image of picture P1-Pn is dark partially.Therefore,, also can reduce the brightness performance of LCD visually simultaneously, influence display quality though prior art can be improved the phenomenon that picture postpones.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of display packing of motion image, to solve prior art problems.
The present invention is the display packing that discloses a kind of motion image of display panels, it comprises display panels and shows one first image, this display panels shows a white image or a grey image after showing first image, and this display panels shows second image of first image that continues behind display white image or grey image.
The present invention discloses a kind of display packing of dynamic image in addition, and it comprises: a dynamic image is provided, and this dynamic image is to be formed by a plurality of continuous pictures, and has one first fixed interval between these continuous pictures; And a plurality of white images or a plurality of grey image are provided, be shown between these continuous pictures, and have one second fixed interval between these white images or these grey images.
Beneficial effect of the present invention is, improves the phenomenon that LCD picture postpones by inserting white picture or grey picture, not only can significantly improve the display quality of dynamic image, and can not reduce the brightness of LCD visually.
Description of drawings
Fig. 1 illustrates in the prior art and inserts the method that solves the picture delay phenomenon by the shadow picture.
Fig. 2 illustrates in the first embodiment of the invention and inserts the method that solves the picture delay phenomenon by white image.
Fig. 3 is the function block schematic diagram of a LCD among the present invention.
Fig. 4 is the synoptic diagram of display panels of the present invention when showing normal pictures.
The synoptic diagram that Fig. 5 is a display panels of the present invention when showing complete white picture.
Fig. 6 illustrates in the second embodiment of the invention and inserts the method that solves the picture delay phenomenon by white image.
Fig. 7 illustrates in the third embodiment of the invention and inserts the method that solves the picture delay phenomenon by white image.
Fig. 8 illustrates in the fourth embodiment of the invention and inserts the method that solves the picture delay phenomenon by the ghost picture.
Fig. 9 illustrates in the fifth embodiment of the invention and inserts the method that solves the picture delay phenomenon by the ghost picture.
Figure 10 illustrates in the sixth embodiment of the invention and inserts the method that solves the picture delay phenomenon by the ghost picture.
The primary clustering symbol description:
30 LCD, 40 display panels
31 gate drivers, 32 source electrode drivers
34 gal decoding circuits, 36 time schedule controllers
38 DC-to-DC converter P 1-P 2n+1Picture
A 1-A nTime interval B 1-B nComplete black picture
W 1-W nComplete white picture G 1-G nComplete grey picture
D 1-D mData line S 1-S nSweep trace
C LC11-C LCnmLiquid crystal capacitance C S1-C SnmStorage capacitors
V Com, V CsVoltage source F 1-F 2nThe frame cycle
WI 1-WI nComplete white image GI 1-GI nFull ghost picture
SW 11-SW NmThin film transistor switch
F 1a-F Na, F 1b-F Nb, F 2a-F2 Na, F 2b-F2 NbThe sub-frame cycle
T 1-T 2n+1, T 1'-T2 n' time point
X 1-X m, Y 1-Y mData line voltage
Embodiment
Please refer to Fig. 2, Fig. 2 has illustrated and has inserted the method that (whiteimage insertion) solves the LCD picture delay phenomenon by white image in the first embodiment of the invention.In Fig. 2, picture P 1-P nThe display panels of representing a LCD respectively is at time point T 1-T nThe time shown picture, picture W 1-W nBe complete white picture, time point T 1-T nTwo adjacent time points define frame cycle F in regular turn 1-F nFor avoiding the picture delay phenomenon of LCD, settling mode of the present invention is to insert to show a complete white picture between the normal show image in the normal show image in a frame cycle and next frame cycle.At first, earlier with frame cycle F 1-F nEach frame cycle be cut into two sub-frame cycle F respectively 1a-F NaAnd F 1b-F Nb, sub-frame cycle F 1a-F NaStart time point be respectively T 1-T n, and sub-frame cycle F 1b-F NbStart time point be respectively T 1'-T n'.Then respectively at frame cycle F 1-F nSub-frame cycle F 1a-F NaBetween output normal display frame P 1-P n, and at frame cycle F 1-F nSub-frame cycle F Tb-F NbBetween show complete white picture W 1-W nSo, the complete white picture W of insertion 1-W nCan improve the phenomenon that LCD picture postpones, and can not reduce the brightness of LCD visually.
In first embodiment of the invention, picture P 1-P nCan be the continuous pictures of a dynamic image.Picture P 1-P nIn interval time of two adjacent pictures can equate or greater than complete white picture W 1-W nIn interval times of two adjacent complete white pictures, for example: F 1〉=(F 1b+ F 2a).
Please refer to Fig. 3, Fig. 3 is the function block schematic diagram of a LCD 30 among the present invention.LCD 30 comprises a display panels (liquid crystal display panel) 40, one gate drivers (gate driver) 31, one source pole driver (source driver) 32, one gal decoding circuit (gammacircuit) 34, time schedule controller (timing controller) 36 and one DC-to-DC converter (DC-DCconverter) 38.The people that the function mode of LCD 30 has been familiar with this technical field knows, and does not give unnecessary details so do not add at this.It is to utilize time schedule controller 36 to control the data output in each frame cycle that the present invention inserts the method that solves the LCD picture delay by white image, makes LCD 30 at frame cycle F 1-F nSub-frame cycle F 1a-F NaCan show normal picture P 1-P n, and at frame cycle F 1-F nSub-frame cycle F 1b-F NbThen show complete white picture W 1-W n
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the display panels 40 of LCD 30 of the present invention synoptic diagram when showing normal pictures, and Fig. 5 is the display panels 40 of LCD 30 of the present invention synoptic diagram when showing complete white picture.Display panels 40 comprises many data line D parallel to each other 1-D mWith many sweep trace S parallel to each other 1-S n, data line D 1-D mWith sweep trace S 1-S nInterlaced with each other and constitute picture element matrix.Each pixel cell in the picture element matrix comprises thin film transistor (TFT) (thin film transistor, the TFT) switch SW as switch respectively 11-SW Nm, liquid crystal capacitance C LC11-C LCnm, and storage capacitors C S11-C SnmDeng electronic component and voltage source V ComAnd V CsData line D 1-D mWith sweep trace S 1-S nBe coupled in the source electrode driver 32 and the gate drivers 31 of LCD 30 respectively.
At frame cycle F 1-F nSub-frame cycle F 1a-F NaIn, LCD 30 receives respectively and is relevant to picture P 1-P nSignal, the thin film transistor switch of opening earlier the pixel cell of desiring to write data by gate drivers 31 converts received image data to corresponding data line voltage X by source electrode driver 32 again 1-X m, and with the data line voltage X that is produced 1-X mBy data line D 1-D mBe applied to the pixel cell that is unlocked, with respectively at frame cycle F 1-F nSub-frame cycle F 1a-F NaMiddle display frame P 1-P n, as shown in Figure 4.
At frame cycle F 1-F nSub-frame cycle F 1b-F NbIn, the thin film transistor switch that LCD 30 is opened each pixel cell by gate drivers 31 earlier again will be corresponding to the data line voltage Y of white picture by source electrode driver 32 1-Y mBy data line D 1-D mBe applied to the pixel cell that is unlocked, with respectively at frame cycle F 1-F nSub-frame cycle F 1b-F NbMiddle display white picture W 1-W n, as shown in Figure 5.
In first embodiment of the invention, between the normal show image and the normal show image in its next frame cycle that show each frame cycle, all insert complete white picture of demonstration.Yet the present invention inserts and shows a complete white picture at also can be separated by frame cycle of a predetermined number.Please refer to Fig. 6, Fig. 6 has illustrated and has inserted the method that solves the LCD picture delay phenomenon by white image in the second embodiment of the invention.In Fig. 6, picture P 1-P 2n+1The display panels of representing a LCD respectively is at time point T 1-T 2n+1The time shown picture, picture W 1-W nBe complete white picture, time point T 1-T 2n+1Two adjacent time points define frame cycle F in regular turn 1-F 2nFor avoiding the picture delay phenomenon of LCD, the second embodiment of the present invention is inserted behind the normal show image that shows per two frame cycles and is shown a complete white picture.At first, earlier with frame cycle F 1-F 2n+1The even number frame cycle be cut into two sub-frame cycle F respectively 2a-F 2b, F 4a-F 4b..., and F 2na-F 2nbSub-frame cycle F 2a, F 4a..., and F 2naStart time point be respectively T 2, T 4... and T 2n, and sub-frame cycle F 2b-F 2nbStart time point be respectively T 2', T 4' ... and T 2n'.Then respectively at odd number frame cycle F 1, F 3..., and F 2n-1Between output normal display frame P 1, P 3..., P 2n+1, respectively at the sub-frame cycle in even number frame cycle F 2a, F 4a..., and F 2naBetween output normal display frame P 2, P 4..., P 2n, and at the sub-frame cycle in even number frame cycle F 2b, F 4b..., and F 2nbBetween the complete white picture W of output 1-W nSo, the complete white picture W of insertion 1-W nAlso can improve the phenomenon that LCD picture postpones, and can not reduce the brightness of LCD visually.
In the present invention first and second embodiment, between the normal show image and the normal show image in its next frame cycle that show each frame cycle, or the frame cycle of the predetermined number of being separated by, all insert complete white picture of demonstration.Yet the present invention also can insert a white image that comprises a plurality of complete white pictures.Please refer to Fig. 7, Fig. 7 has illustrated and has inserted the method that solves the LCD picture delay phenomenon by white image in the third embodiment of the invention.In Fig. 7, picture P 1-P nThe display panels of representing a LCD respectively is at time point T 1-T nThe time shown picture, time point T 1-T nTwo adjacent time points define frame cycle F in regular turn 1-F n, complete white image WI 1-WI nRespectively comprise two complete white pictures, the interval time of two adjacent complete white images is respectively by A 1-A nRepresent A 1-A nValue can be identical.So, the complete white image WI of insertion 1-WI nCan improve the phenomenon that LCD picture postpones, and can not reduce the brightness of LCD visually.
In third embodiment of the invention, picture P 1-P nCan be the continuous pictures of a dynamic image.Picture P 1-P nIn interval time of two adjacent pictures can equate or greater than complete white image WI 1-WI nIn interval times of two adjacent complete white images, for example: F1 〉=(F 1b+ F 2a).Complete white image WI 1-WI nThe complete white picture that can comprise two or other number, the interval time between its two adjacent complete white picture is less than the interval times between the two adjacent complete white images, for example: A 1<(F 1b+ F 2a).
Please refer to Fig. 8, Fig. 8 has illustrated and has inserted the method that (grayimageinsertion) solves the LCD picture delay phenomenon by the ghost picture in the fourth embodiment of the invention.In Fig. 8, picture P 1-P nThe display panels of representing a LCD respectively is at time point T 1-T nThe time shown picture, picture G 1-G nBe complete grey picture, time point T 1-T nTwo adjacent time points define frame cycle F in regular turn 1-F nThe fourth embodiment of the invention and the first embodiment difference are that the 4th embodiment inserts the picture that shows a full ash between the normal show image in the normal show image in a frame cycle and next frame cycle.At first, earlier with frame cycle F 1-F nEach frame cycle be cut into two sub-frame cycle F respectively 1a-F NaAnd F 1b-F Nb, sub-frame cycle F 1a-F NaStart time point be respectively T 1-T n, and sub-frame cycle F 1b-F NbStart time point be respectively T 1'-T n'.Then respectively at frame cycle F 1-F nSub-frame cycle F 1a-F NaBetween output normal display frame P 1-P n, and at frame cycle F 1-F nSub-frame cycle F 1b-F NbBetween show complete grey picture G 1-G nSo, the complete grey picture G of insertion 1-G nThe phenomenon that LCD picture postpones can be improved, but the brightness of LCD visually can be too do not reduced.
Please refer to Fig. 9, Fig. 9 has illustrated and has inserted the method that solves the LCD picture delay phenomenon by the ghost picture in the fifth embodiment of the invention.The fifth embodiment of the invention and the second embodiment difference are that the 5th embodiment inserts the picture that shows a full ash behind the normal show image that shows per two frame cycles.In Fig. 9, picture P 1-P 2n+1The display panels of representing a LCD respectively is at time point T 1-T 2n+1The time shown picture, picture G 1-G nBe complete grey picture, time point T 1-T 2n+1Two adjacent time points define frame cycle F in regular turn 1-F 2nAt first, earlier with frame cycle F 1-F 2n+1The even number frame cycle be cut into two sub-frame cycle F respectively 2a-F 2b, F 4a-F 4b..., and F 2na-F 2nbSub-frame cycle F 2a, F 4a..., and F 2naStart time point be respectively T 2, T 4... and T 2n, and sub-frame cycle F 2b-F 2nbStart time point be respectively T 2', T 4' ... and T 2n'.Then respectively at odd number frame cycle F 1, F 3..., and F 2n-1Between output normal display frame P 1, P 3..., P 2n+1, respectively at the sub-frame cycle in even number frame cycle F 2a, F 4a..., and F 2naBetween output normal display frame P 2, P 4..., P 2n, and at the sub-frame cycle in even number frame cycle F 2b, F 4b..., and F 2nbBetween output complete grey picture G 1-G nSo, the complete grey picture G of insertion 1-G nAlso can improve the phenomenon that LCD picture postpones, and can too not reduce the brightness of LCD visually.
Please refer to Figure 10, Figure 10 has illustrated and has inserted the method that solves the LCD picture delay phenomenon by the ghost picture in the sixth embodiment of the invention.Sixth embodiment of the invention and the 3rd embodiment difference are that the 6th embodiment inserts to show that one comprises the grey image of a plurality of complete grey pictures between the normal show image in the normal show image in a frame cycle and next frame cycle.In Figure 10, picture P 1-P nThe display panels of representing a LCD respectively is at time point T 1-T nThe time shown picture, time point T 1-T nTwo adjacent time points define frame cycle F in regular turn 1-F n, full ghost is as GI 1-GI nRespectively comprise two complete grey pictures, the interval time of two adjacent full ghost pictures is respectively by A 1-A nRepresent A 1-A nValue can be identical.So, the full ghost of insertion is as GI 1-GI nThe phenomenon that LCD picture postpones can be improved, and the brightness of LCD visually can be too do not reduced.
In addition, in the present invention first to the 6th embodiment, two sub-frame cycles in same frame cycle can comprise identical time span, perhaps comprise different time span.
Prior art is inserted black picture and is improved the phenomenon that LCD picture postpones, but also can reduce LCD brightness simultaneously, influences display quality.Compared to prior art, the present invention improves the phenomenon that LCD picture postpones by inserting white picture or grey picture, not only can significantly improve the display quality of dynamic image, and can not reduce the brightness of LCD visually.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.

Claims (17)

1. the display packing of the dynamic image of a display panels is characterized in that comprising:
Described display panels shows one first image;
Described display panels shows a white image or a grey image after showing above-mentioned first image; And
Described display panels shows one second image of above-mentioned first image that continues after showing above-mentioned white image or grey image.
2. display packing as claimed in claim 1 is characterized in that, shows that one first image is to show one first image in one first period in a frame cycle; Show that a white image or a grey image are to show this white image or this grey image in one second period in described frame cycle.
3. display packing as claimed in claim 2 is characterized in that, the time span of first period in described frame cycle equals the time span of second period in this frame cycle.
4. display packing as claimed in claim 1 is characterized in that, shows that a white image or a grey image are to show one or more white picture, or shows one or more grey screen.
5. display packing as claimed in claim 1 is characterized in that, shows that one first image is to show one or more picture.
6. display packing as claimed in claim 1 is characterized in that, shows that one second image is to show one or more picture.
7. the display packing of a dynamic image is characterized in that comprising:
One dynamic image is provided, and this dynamic image is formed by a plurality of continuous pictures, and has one first fixed interval between these continuous pictures; And
A plurality of white images or a plurality of grey image are provided, are shown between described these continuous pictures, and have one second fixed interval between these white images or these grey images.
8. display packing as claimed in claim 7 is characterized in that, described first fixed interval equals described second fixed interval.
9. display packing as claimed in claim 7 is characterized in that, described first fixed interval is greater than described second fixed interval.
10. display packing as claimed in claim 7 is characterized in that, each white image is formed by a white picture.
11. display packing as claimed in claim 7 is characterized in that, each white image is formed by a plurality of white picture.
12. display packing as claimed in claim 11 is characterized in that, has one the 3rd fixed interval between described these white pictures.
13. display packing as claimed in claim 12 is characterized in that, described second fixed interval is greater than described the 3rd fixed interval.
14. display packing as claimed in claim 7 is characterized in that, each grey image is formed by a grey screen.
15. display packing as claimed in claim 7 is characterized in that, each grey image is formed by a plurality of grey screen.
16. display packing as claimed in claim 15 is characterized in that, has one the 3rd fixed interval between described these grey screens.
17. display packing as claimed in claim 16 is characterized in that, described second fixed interval is greater than described the 3rd fixed interval.
CNB2006100585082A 2006-03-10 2006-03-10 Method for displaying liquid crystal display panel dynamic image Expired - Fee Related CN100380189C (en)

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Cited By (4)

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US8054268B2 (en) 2007-05-25 2011-11-08 Chimei Innolux Corporation Liquid crystal display device having pairs of compensating gradations and method for driving same
CN102446493A (en) * 2010-09-30 2012-05-09 元太科技工业股份有限公司 Drive method of electronic paper display device and drive device of electronic paper display device
CN103176655A (en) * 2013-03-13 2013-06-26 北京京东方光电科技有限公司 Driving method and device of touch displayer
US8970640B2 (en) 2010-09-15 2015-03-03 E Ink Holdings Inc. Electronic paper display drive method and apparatus thereof

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US6166712A (en) * 1993-07-01 2000-12-26 Motorola, Inc. High-persistence display circuit and method to therefor
US7161574B2 (en) * 2001-05-31 2007-01-09 Matsushita Electric Industrial Co., Ltd. Liquid crystal display element driving method and liquid crystal display using the same
JP2004212747A (en) * 2003-01-07 2004-07-29 Hitachi Ltd Display device and its driving method
JP2004317785A (en) * 2003-04-16 2004-11-11 Seiko Epson Corp Method for driving electrooptical device, electrooptical device, and electronic device
CN100390856C (en) * 2005-01-14 2008-05-28 友达光电股份有限公司 LCD capable of improving dynamic frame display quality and driving method thereof

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Publication number Priority date Publication date Assignee Title
US8054268B2 (en) 2007-05-25 2011-11-08 Chimei Innolux Corporation Liquid crystal display device having pairs of compensating gradations and method for driving same
US8970640B2 (en) 2010-09-15 2015-03-03 E Ink Holdings Inc. Electronic paper display drive method and apparatus thereof
CN102446493A (en) * 2010-09-30 2012-05-09 元太科技工业股份有限公司 Drive method of electronic paper display device and drive device of electronic paper display device
CN102446493B (en) * 2010-09-30 2014-01-01 元太科技工业股份有限公司 Drive method of electronic paper display device and drive device of electronic paper display device
CN103176655A (en) * 2013-03-13 2013-06-26 北京京东方光电科技有限公司 Driving method and device of touch displayer
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US9958980B2 (en) 2013-03-13 2018-05-01 Boe Technology Group Co., Ltd. Driving method and driving device of touch control display

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