CN101923834B - Liquid crystal display device capable of reducing motion blur - Google Patents
Liquid crystal display device capable of reducing motion blur Download PDFInfo
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- CN101923834B CN101923834B CN2009100527540A CN200910052754A CN101923834B CN 101923834 B CN101923834 B CN 101923834B CN 2009100527540 A CN2009100527540 A CN 2009100527540A CN 200910052754 A CN200910052754 A CN 200910052754A CN 101923834 B CN101923834 B CN 101923834B
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Abstract
The invention provides a liquid crystal display device capable of reducing motion blur. The device comprises a display panel, a source driver, a grid driver and a time schedule controller, wherein the display panel comprises a plurality of pixels for displaying image data, the time schedule controller comprises a time schedule control unit and a data processing unit, the time schedule control unit is used for controlling the time schedules required in the process of outputting the image data to the grid driver and the source driver, and the data processing unit is used for analyzing the image data to insert black and gray levels in different pixels of a plurality of pixels in different picture times.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, be specifically related to a kind of liquid crystal indicator that reduces dynamic fuzzy.
Background technology
Cathode-ray tube display (CRT) adopts pulsed to show; On the demonstration dynamic menu, have excellent display effect; And LCD (LCD) adopts freeze mode to show; Because the reason that human eye vision persists, so when watching the dynamic menu of LCD, human eye tends to perceive the phenomenon of dynamic fuzzy.
Play the dynamic fuzzy that dynamic menu produces on the LCD for solving, mainly comprise three kinds of modes.First kind of mode reduces dynamic fuzzy for the reaction time of reducing liquid crystal, and the second way is for increasing the edge sharpening of image, and the third mode for a change freeze mode of LCD shows.Mainly containing two kinds of methods aspect the reaction time that reduces liquid crystal, and the use high speed liquid crystal material and the pattern of overdriving (Over-Driving, OD).Changing freeze mode and show that two kinds of methods are mainly also arranged, is respectively that high-speed driving and (for example double frequency scanning) emulation pulsed show.
In above-mentioned three kinds of forms mentioning and the corresponding five kinds of methods; Reduce by two kinds of methods in reaction time; Wherein use the high speed liquid crystal must change the liquid crystal of new kenel (for example OCB); The pattern of the overdriving internal memory of then need arranging in pairs or groups writes down picture data, and the edge sharpening that increases image then must the development complicated algorithm.Change in two kinds of methods of freeze mode display format; The high-speed driving internal memory record picture data of need arranging in pairs or groups is equally accomplished the dynamic interpolation of data; Therefore, emulation pulsed shows it is to reach the method that reduces LCD dynamic fuzzy picture in above-mentioned five kinds of methods the most easily.
The emulation pulsed shows can be divided into Data Control and backlight control; Aspect backlight control because the mode of light emitting diode (LED) the employing edge light backlight of small-medium size panel; Therefore the possibly problem that can't accomplish Region control and be easy to generate flicker (Flicker); Easy not as the adjustment data in control, so Data Control is to reach its effect the most easily on the dynamic fuzzy that solves the LCD generation.
The Data Control of prior art mostly is to carry out with the mode of time, among two pictures, inserts the black data of a picture, and in fact the method has the problem of flicker, and the high-speed driving of need arranging in pairs or groups in realization is to avoid producing the problem of flicker.For instance, insert a black picture at two 1/60 adjacent pictures.When the black data aspect ratio that inserts is low more, then the frame updating frequency then must be high more, and for example above-mentioned two pictures insert a black data picture, and then the frame updating frequency must be promoted to 120Hz.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal indicator that reduces dynamic fuzzy, to solve the above problems.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of liquid crystal indicator that reduces dynamic fuzzy, this liquid crystal indicator comprise a display panel, one source pole driver, a gate drivers and time schedule controller.This display panel comprises a plurality of pixels, is used for showing an image data.This source electrode driver is electrically connected at this display panel, is used for transmitting this image data.This gate drivers is electrically connected at this display panel, is used for driving these a plurality of pixels to show this image data.This time schedule controller comprises a sequential control module and a data processing unit.This timing control unit is used for controlling the sequential that this image data outputs to this gate drivers and this source electrode driver need.This data processing unit is used for analyzing this image data, inserts the grey black rank with the pixels with different to this plural number pixel in different image times.
The present invention provides a kind of display packing that reduces dynamic fuzzy in addition, comprising: provide one to comprise that the display panel of a plurality of pixels is used for showing an image data; And analyze this image data, insert the grey black rank with pixels with different in different image times to this plural number pixel.
Description of drawings
Fig. 1 can reduce the synoptic diagram of the liquid crystal indicator of dynamic fuzzy for the present invention;
Fig. 2 is the synoptic diagram that utilizes the principle generation GTG of persistence of vision;
Fig. 3 utilizes the average principle of vision to produce the synoptic diagram of GTG;
Fig. 4 is the synoptic diagram that liquid crystal indicator of the present invention inserts first embodiment of GTG;
Fig. 5 is the synoptic diagram that liquid crystal indicator of the present invention inserts second embodiment of GTG;
Fig. 6 is the synoptic diagram that liquid crystal indicator of the present invention inserts the 3rd embodiment of GTG;
Fig. 7 is the synoptic diagram that liquid crystal indicator of the present invention cooperates dynamic gamma control;
Fig. 8 is the calcspar of dynamic gamma control module.
Embodiment
In the middle of instructions and follow-up claim, used some vocabulary to censure specific assembly.Having common knowledge the knowledgeable in the affiliated field should understand, and same element may be called with different nouns by manufacturer.This instructions and follow-up claim are not used as the mode of distinct elements with the difference of title, but the benchmark that is used as distinguishing with the difference of element on function.In the whole text in the middle of instructions and the follow-up claim carry and " comprising " be an open term, should be construed to " comprise but be not limited to ".In addition, " electrically connect ' one speech and comprise any direct and indirect means that are electrically connected at this.Therefore, be electrically connected at one second device, then represent this first device can be directly connected in this second device, or be connected to this second device through other device or the intersegmental ground connection of connection hand if describe one first device in the literary composition.
Please refer to Fig. 1, Fig. 1 can reduce the synoptic diagram of the liquid crystal indicator 20 of dynamic fuzzy for the present invention.Liquid crystal indicator 20 comprises a display panel 12, time schedule controller (Timing Controller) 14, one gate drivers 16 and one source pole driver 18.Time schedule controller 14 comprises a sequential control module 143 and a data processing unit 141.Timing control unit 143 is used for controlling image data 10 and outputs to the required sequential of gate drivers 16 and source electrode driver 18.Data processing unit 141 is used for receiving image data 10, is sent to source electrode driver 18 after treatment.Data processing unit 141 can insert black (GTG) data in the picture of image data 10, reach the emulation pulsed and show, to reduce the annoying dynamic fuzzy of liquid crystal indicator.Usually the emulation pulsed shows it mainly is to utilize persistence of vision and the average principle of vision to insert black (GTG) data.Utilize the principle of persistence of vision to insert black picture visual and be the array mode of time, under different pictures, insert black (GTG) data, yet be held in 60Hz, have the problem of film flicker (Flicker) as if the frame updating frequency dimension.In addition; Utilize the average principle of vision to can be considered the array mode in space, black (GTG) data of diverse location insertion at same picture on average can be observed mixed GTG through vision; Yet when too big as if the zone of inserting black (GTG) data, the image of picture will distortion.Therefore, liquid crystal indicator 20 of the present invention utilizes persistence of vision and the average principle of vision to insert the dynamic fuzzy that black picture reduces liquid crystal indicator simultaneously.
Please refer to Fig. 2, Fig. 2 is the synoptic diagram that utilizes the principle generation GTG of persistence of vision.Block A, B, C, D utilize four image time F1～F4 to show different gray levels respectively, and block A is all white GTG at four image time F1～F4, so demonstration is white GTG.Block B is a black grey scale at image time F1, is white GTG at image time F2～F4, so demonstration is light GTG.Block C is a black grey scale at image time F1～F2, is white GTG at image time F3～F4, so demonstration is GTG.Block D is a black grey scale at image time F1～F3, is white GTG at image time F4, so demonstration is the dull gray rank.
Please refer to Fig. 3, Fig. 3 utilizes the average principle of vision to produce the synoptic diagram of GTG.Block A, B, C, D comprise four pixel P1, P2, P3, P4 respectively.Block A is all white GTG at four pixel P1～P4, so demonstration is white GTG.Block B is a black grey scale at pixel P1, is white GTG at pixel P2～P4, so demonstration is light GTG.Block C is a black grey scale at pixel P1～P2, is white GTG at pixel P3～P4, so demonstration is GTG.Block D is a black grey scale at pixel P1～P3, is white GTG at pixel P4, so demonstration is the dull gray rank.
Please refer to Fig. 4, Fig. 4 is the synoptic diagram that liquid crystal indicator 20 of the present invention inserts first embodiment of GTG.Liquid crystal indicator 20 utilizes persistence of vision and the average principle of vision to insert black picture simultaneously, can be to insert black picture below the 60Hz in the frame updating frequency therefore, and picture does not have the problem of flicker.Block E comprises four pixel P1, P2, P3, P4, and at four image time F1～F4 pixels with different is inserted the grey black rank respectively.As shown in Figure 4, when image time F1, insert the grey black rank at pixel P2; When image time F2, insert the grey black rank at pixel P4; When image time F3, insert the grey black rank at pixel P1; When image time F4, insert the grey black rank at pixel P3.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram that liquid crystal indicator 20 of the present invention inserts second embodiment of GTG.When the frame updating frequency dimension is held in 60Hz, if under bright picture, insert the grey black rank, might be too big because of the contrast of GTG, and slight scintillation is arranged; In order to reduce the too big scintillation that causes of contrast because of GTG; In a second embodiment; Block F comprises four pixel P1, P2, P3, P4; And at four image time F1～F4 two pixels with different are inserted the grey black rank respectively, change 1/2 original GTG value but insert the GTG value into by the grey black rank, to keep partly raw data characteristic.
Please refer to Fig. 6, Fig. 6 is the synoptic diagram that liquid crystal indicator 20 of the present invention inserts the 3rd embodiment of GTG.Compared to second embodiment; Block G comprises four pixel P1, P2, P3, P4 equally; But the pixel lifting of inserting the grey black rank is two pixels for each picture; And at four image time F1～F4 two pixels with different are inserted the grey black rank respectively, but in the 3rd enforcement, insert the GTG value and change the fixed gray level value into by the grey black rank.Using the fixed gray level value to carry out black plug can cooperate over-driving method to carry out simultaneously; So can reduce the required memory size of record GTG to GTG; The use amount of picture internal memory can be reduced to originally half; If when being applied to the display panel of low resolution, more maybe not need using the picture internal memory, and directly be recorded in the time schedule controller 14.
Fig. 7 and Fig. 8 are the fourth embodiment of the present invention.Please refer to Fig. 7, Fig. 7 is that liquid crystal indicator 20 of the present invention cooperates dynamic gamma control (Dynamic Gamma Control, synoptic diagram DGC).Data processing unit 141 comprises a dynamic gamma control module 31 and a black plug module 32.Image data 10 produces output data via dynamic gamma control module 31 and black plug module 32; Scale (scale) control signal that the Plug Grey rank of black plug module 32 value produces according to attitude gamma control module 31, scale control signal and Plug Grey rank value be inversely proportional to (being that more greatly then Plug Grey rank value is low more for scale control signal).Use dynamic gamma control module 31 can increase the picture brightness decline that picture causes recently slowing down Plug Grey rank value.
Please refer to Fig. 8, Fig. 8 is the calcspar of dynamic gamma control module 31.Dynamic gamma control module 31 reaches the preferable picture that the picture contrast is drawn back through analyzing image data 10.Dynamic gamma control module 31 comprises a color to GTG conversion (Color to Gray Transformation) module 311; One rectangular figure takes out (Histogram Extraction) module 312; The rectangular figure of one CDF (CDF of Histogram) module 313; One quantization approximation (Quantify Approximation) module 314; (ScaleLevel Decide) module 315 is set in the accurate position of one scale; One reinforcing coefficient is set (Enhancement Coefficients Setting) module 316; One contrast strengthens (Constant Enhancement) module 317; One restrictive condition (RestrictingConditions) setting module 318 and GTG a to color conversion (Gray to Color Transformation) module 319.It is yuv data that color to GTG modular converter 311 is used for the RGB of image data 10 input data-switching.Rectangular figure takes out the distribution (PDF) that module 312 is used for adding up the Y data of image, and the Y DATA DISTRIBUTION of image is calculated the curve that makes new advances, the enhancing Y transfer function that this curve is just new through the rectangular module 313 of CDF.Quantization approximation module 314 is used for calculating new enhancing Y data, uses to save hardware circuit.Reinforcing coefficient setting module 316 receives three limiting parameters to be influenced, and wherein the accurate position of scale setting module 315 can be by user's setup parameter, and two other limiting parameter is beta and gamma.The function of Beta is that the prevention image concentrates on the influence that cause in certain section interval, and the function of gamma is to judge the distribution of image.The contrast (contrast restriction) of restrictive condition setting module 318 for keeping whole picture, last GTG to color conversion 319 is changed out output RGB data.
In sum, liquid crystal indicator of the present invention utilizes the combination on the insertion grey black rank in time and space, to reduce the dynamic fuzzy of liquid crystal indicator.This LCD comprises a display panel, one source pole driver, a gate drivers and time schedule controller.This display panel comprises a plurality of pixels, is used for showing an image data.This time schedule controller comprises a sequential control module and a data processing unit.This timing control unit is used for controlling the sequential that this image data outputs to this gate drivers and this source electrode driver need.This data processing unit is used for analyzing this image data, inserts the grey black rank with the pixels with different to this plural number pixel in different image times.
The above is merely 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 (8)
1. the liquid crystal indicator that can reduce dynamic fuzzy is characterized in that, comprising:
One display panel comprises a plurality of pixels, is used for showing an image data;
The one source pole driver is electrically connected at this display panel, is used for transmitting this image data;
One gate drivers is electrically connected at this display panel, is used for driving these a plurality of pixels to show this image data; And
Time schedule controller comprises:
One sequential control module is used for controlling the sequential that this image data outputs to this gate drivers and this source electrode driver need; And
One data processing unit is used for analyzing this image data, inserts the grey black rank with the pixels with different to this plural number pixel in different image times; Wherein this data processing unit comprises:
One black plug module is keeping under the constant situation of frame updating frequency, is used for resulting from this image data insertion grey black rank; And
One dynamic gamma control module, the contrast that is used for increasing this image data is to slow down the brightness decline that cause on these data processing unit insertion grey black rank.
2. the liquid crystal indicator that reduces dynamic fuzzy as claimed in claim 1 is characterized in that wherein this data processing unit inserts a black data to the pixels with different of this plural number pixel in different image times.
3. the liquid crystal indicator that reduces dynamic fuzzy as claimed in claim 1 is characterized in that, wherein this data processing unit pixels with different to this plural number pixel in different image times is inserted 1/2 GTG value originally.
4. the liquid crystal indicator that reduces dynamic fuzzy as claimed in claim 1 is characterized in that, wherein this data processing unit inserts a fixing GTG value to the pixels with different of this plural number pixel in different image times.
5. a display packing that reduces dynamic fuzzy is characterized in that, comprising:
Provide one to comprise that the display panel of a plurality of pixels is used for showing an image data;
Analyze this image data, keeping under the constant situation of frame updating frequency, insert the grey black rank with pixels with different in different image times to this plural number pixel; And
The contrast that utilizes dynamic gamma to control to increase this image data is inserted the brightness that causes on grey black rank and is descended to slow down this image data.
6. the display packing of reduction dynamic fuzzy as claimed in claim 5; It is characterized in that, wherein in different image times, the pixels with different of this plural number pixel is inserted the grey black rank and be meant in different image times the pixels with different of this plural number pixel is inserted a black data.
7. the display packing of reduction dynamic fuzzy as claimed in claim 5; It is characterized in that, wherein in different image times, the pixels with different of this plural number pixel is inserted the grey black rank and be meant that the pixels with different to this plural number pixel is inserted 1/2 GTG value originally in different image times.
8. the display packing of reduction dynamic fuzzy as claimed in claim 5; It is characterized in that, wherein in different image times, the pixels with different of this plural number pixel is inserted the grey black rank and be meant the GTG value of in different image times, the pixels with different insertion one of this plural number pixel being fixed.
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| CN105825835B (en) * | 2015-07-29 | 2018-06-26 | 维沃移动通信有限公司 | A kind of method and electronic equipment for adjusting electronic equipment display brightness |
| CN108600719B (en) * | 2018-05-21 | 2020-11-27 | 苏州佳世达光电有限公司 | Projection device and method for sensing ambient light brightness in real time |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1987574A (en) * | 2005-12-20 | 2007-06-27 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method for driving the same |
| KR100830751B1 (en) * | 2005-08-10 | 2008-05-20 | 도시바 마쯔시따 디스플레이 테크놀로지 컴퍼니, 리미티드 | Liquid crystal display device, method for controlling display data for liquid crystal display device, and recording media |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100830751B1 (en) * | 2005-08-10 | 2008-05-20 | 도시바 마쯔시따 디스플레이 테크놀로지 컴퍼니, 리미티드 | Liquid crystal display device, method for controlling display data for liquid crystal display device, and recording media |
| CN1987574A (en) * | 2005-12-20 | 2007-06-27 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method for driving the same |
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