CN102881266B - Electronic display device and driving method thereof - Google Patents
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- CN102881266B CN102881266B CN201110206539.9A CN201110206539A CN102881266B CN 102881266 B CN102881266 B CN 102881266B CN 201110206539 A CN201110206539 A CN 201110206539A CN 102881266 B CN102881266 B CN 102881266B
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Abstract
The invention discloses an electronic display device and a driving method thereof. The driving method comprises the following steps of: analyzing all pieces of pixel information of a plurality of pixels of an original picture; judging a saturation color block proportion of the original picture; judging a white block proportion of the original picture; and judging whether to increase an updating frequency of the original picture according to the saturation color block proportion of the original picture and the white block proportion of the original picture, and inserting a first picture, wherein a saturation color block proportion of the first picture is the same as that of the original picture, and a gray block proportion or a black block proportion of the first picture is the same as the white block proportion of the original picture; and the original picture and the first picture are alternately displayed by increasing the updating frequency.
Description
Technical field
The present invention has about a kind of electronic display unit and its driving method.
Background technology
Liquid crystal (LCD) display device, owing to having the advantages such as low radiation, has become the main product of display device.The panel of liquid crystal indicator comprises multiple pixel.Former, a pixel comprises 3 sub-pixels, and the panel that namely red sub-pixel, green sub-pixels and blue subpixels apply this kind of dot structure also can be described as RGB panel.In traditional RGB panel, the overall penetrance of penetrance counter plate of colored filter (color filter, CF) has negative effect.So the panels en bloc penetrance of traditional RGB panel is not good, cause panel consumed power more serious.
In recent years, because environmental consciousness comes back, reduce panel and consume power consumption for paying close attention to one of subject under discussion.So new dot structure is proposed successively, such as, a kind of new dot structure comprises 4 sub-pixels, red sub-pixel, green sub-pixels, blue subpixels and white sub-pixels.The panel applying this kind of new dot structure also can be described as RGBW panel.The penetrance of white sub-pixels, close to 100%, therefore can promote panel penetrance.
But, owing to adding the relation of white sub-pixels, the entire area that red sub-pixel, green sub-pixels and blue subpixels (also can be described as pure color sub-pixel) occupy declines than also, cause this RGBW panel when showing pure color (saturation color), pure color luminance shortage, affects the image quality of panel.
In addition, this RGBW panel also exists the problem of simultaneity contrast (simultaneous contrast).Simultaneity contrast refers to, human eye watch the impact feeling to be subject to adjacent look (background colour) of color, this is because human visual system is otherness when strengthening viewing, automatically produce at place of dichromatism adjacent boundary and exaggerate the phenomenon of lightness, chroma or hue contrast, this kind of phenomenon is called that simultaneity contrasts.
Please refer to Figure 1A and Figure 1B, it is in order to explain that simultaneity contrasts.Figure 1A shows RGB Display panel white block B11 and pure color block B12; And Figure 1B shows RGBW Display panel white block B21 and pure color block B22.With brightness, the brightness of the pure color block B12 of picture 110 is higher than the brightness of the pure color block B22 of picture 120, but the brightness of the white block B 11 of picture 110 is then lower than the brightness of the white block B21 of picture 120.So during human eye viewing, can feel, the pure color brightness ratio felt at viewing picture 120 watches the pure color brightness of picture 110 secretly a lot, and this is simultaneity contrast problem of RGBW panel.
So the present invention proposes a kind of electronic display unit and its driving method, it can slow down the simultaneity contrast problem of RGBW panel.
Summary of the invention
The invention relates to a kind of electronic display unit and its driving method, it is by inserting the lower picture of brightness, slows down the simultaneity contrast problem of RGBW panel.
The invention relates to a kind of electronic display unit and its driving method, it, by the backlight reducing raw frames, reduces panel power consumption.
According to an one exemplary embodiment of the present invention, propose a kind of driving method of electronic display unit, comprising: all pixel informations analyzing multiple pixels of a raw frames, judge a pure color block ratio of this raw frames, judge one of this raw frames white block ratio, and according to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames, and insert one first picture, wherein, one pure color block ratio of this first picture is same as this pure color block ratio of this raw frames, and this first picture has a grey block or a black block, and a grey block ratio of this first picture or a black block ratio are same as this white block ratio of this raw frames, and raising renewal frequency makes this raw frames and this first picture Alternation Display.
According to another one exemplary embodiment of the present invention, propose a kind of electronic display unit, comprising: a controller; One display panel; And one drive circuit, be coupled to this controller and this display panel, this driving circuit is controlled by this controller and drives this display panel.All pixel informations of multiple pixels of a raw frames analyzed by this controller, judge a pure color block ratio of this raw frames, judge one of this raw frames white block ratio, and according to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames, and insert one first picture, one pure color block ratio of this first picture is same as this pure color block ratio of this raw frames, and this first picture has a grey block or a black block, and a grey block ratio of this first picture or a black block ratio are same as this white block ratio of this raw frames, and raising renewal frequency makes this raw frames and this first picture Alternation Display.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Figure 1A shows RGB Display panel white block B 11 and pure color block B12.
Figure 1B shows RGBW Display panel white block B21 and pure color block B22.
Fig. 2 display is according to the process flow diagram of the driving method of the electronic display unit of the embodiment of the present invention.
Fig. 3 ~ Fig. 5 shows 3 kinds of embodiments of the step 240 according to the embodiment of the present invention respectively.
Fig. 6 display is according to the block schematic diagram of the electronic display unit of the embodiment of the present invention.
Main element symbol description:
110,120,310 ~ 330,410 ~ 430,510 ~ 530: picture
210 ~ 250: step B11 ~ B56: block
600: electronic display unit 610: controller
620: driving circuit 630: backlight module
640: display panel IN: raw frames
Embodiment
In the present invention, when finding the problem that raw frames may cause simultaneity to contrast, the renewal frequency of raw frames can be improved, and insert the first picture.In this first picture, its pure color block directly or indirectly produces from the pure color block of raw frames, and its grey block or black block then reduce brightness from the white block of raw frames and obtain.
Please refer to Fig. 2, it shows the process flow diagram of the driving method of electronic display unit according to an embodiment of the invention.As shown in Figure 2, in step 210, analyze all pixel informations of raw frames.That is, analyze the sub-pixel data of all pixels of this raw frames.At this, pixel explains for RGBW pixel, and the arrangement mode as RGBW sub-pixel then can not limit the embodiment of the present invention.
In step 220, judge that whether the pure color pixel ratio of this raw frames is higher than threshold value R1, if then flow process continues to step 230, otherwise flow process continues to step 250.In this, pure color pixel is defined as follows: for the pixel Px in raw frames, its pixel information is respectively Rx, Gx and Bx, if Max is (Rx, Gx, Bx)/Min (Rx, Gx, Bx) a certain value of > (such as but be not limited to 2), then this pixel Px is regarded as pure color pixel.Max (Rx, Gx, Bx) and Min (Rx, Gx, Bx) represent the maxima and minima in Rx, Gx and Bx respectively.Furtherly, if Max (Rx, Gx, Bx)=Rx, then can be described as pure red pixel (that is this pixel Px shows red); Max (Rx, Gx, Bx)=Gx, then can be described as pure green pixel (that is this pixel Px shows green); Max (Rx, Gx, Bx)=Bx, then can be described as pure blue pixel (that is this pixel Px shows blue).In step 220, count the quantity of all pure color pixels, then the number of all pixels divided by this raw frames, to obtain pure color pixel ratio.
In step 230, judge that whether the white pixel ratio of this raw frames is higher than threshold value R2, if then flow process continues to step 240, otherwise flow process continues to step 250.In this, white pixel is defined as follows: for the pixel Px in raw frames, its pixel information is respectively Rx, Gx and Bx, if Rx=Gx=Bx > is y, then this pixel Px is regarded as white pixel (that is this pixel Px display white).In step 230, count the quantity of all white pixel, then the number of all pixels divided by this raw frames, to obtain white pixel ratio.
In the present embodiment, if the pure color pixel ratio of this raw frames higher than threshold value R1 (area of pure color block is not little) and the white pixel ratio of this raw frames higher than threshold value R2 (area of white block is not little), representing user when watching this raw frames, the problem of simultaneity contrast may be experienced.So, in step 240, if the pure color pixel ratio of this raw frames higher than threshold value R1 and the white pixel ratio of this raw frames higher than threshold value R2, then improve the renewal frequency of this raw frames, and insert one first picture (its frequency is same as the raw frames after improving renewal frequency).In addition, in this first picture, from the pure color block of raw frames directly or indirectly (" indirectly " refers to through falling backlight process) and obtain, and its grey block or black block then obtain from the white block reduction brightness of raw frames its pure color block.The details of step 240 will in beneath explanation it.
On the other hand, in the present embodiment, if the pure color pixel ratio of this raw frames is higher than threshold value R1 (area of pure color block is not little), or the white pixel ratio of this raw frames is not higher than the words of threshold value R2 (area of white block is little), representing user when watching this raw frames, may can not experience the problem of simultaneity contrast.So, in step 250, maintain raw frames.
Now please refer to Fig. 3, its display is according to the first embodiment of the step 240 of the embodiment of the present invention.At this, for the purpose of simplified illustration, suppose that raw frames 310 comprises 2 blocks, white block B31 and pure color block B32, wherein, the brightness of white block B31 and pure color block B32 respectively but be not limited as 450 nits (nits) and 206nits.
In the first embodiment, the renewal frequency of raw frames improved, such as, suppose that the renewal frequency of its script is 60Hz, then improving 2 times is 120Hz.Insert another the first picture 320, the grey block B33 of this first picture 320 obtains by the white block B31 of raw frames 310 is reduced brightness, such as, the white block B31 of raw frames 310 is reduced to 150nits by brightness 450nits, to produce the grey block B33 of the first picture 320.The distribution position of the pure color block B34 of the first picture 320 is same as the distribution position of the pure color block B32 of raw frames 310, and both it, brightness is identical.The distribution position of the grey block B33 of the first picture 320 is same as the distribution position of the white block B31 of raw frames 310, but its brightness is lower.
As shown in Figure 3, via the persistence of vision effect of human eye, raw frames 310 and the first picture 320 can be synthesized picture 330 (its effective frequency synthesis is 60Hz) by human eye.Grey block B35 in picture 330 is synthesized by the white block B31 of raw frames 310 and the grey block B33 of the first picture 320 to form, and its brightness is 300nits ((450+150)/2=300); And the pure color block B36 (it still shows pure color) in picture 330 is synthesized by the pure color block B34 of the pure color block B32 of raw frames 310 and the first picture 320 to form, the brightness of its pure color block B36 is then 206nits ((206+206)/2=206).
So with raw frames 310, the brightness contrast of its pure color block B32 and white block B31 is 206/450=0.46.With picture 330, the brightness contrast of pure color block B36 and grey block B35 is 206/300=0.69.So, it can thus be appreciated that the mode by Fig. 3 can reduce the brightness of white block but the brightness of maintenance pure color block, so can improve the simultaneity contrast of picture.
In addition, in Fig. 3, when the first picture will be produced from raw frames, for ninsolid color non-white pixel, then do not need to adjust its brightness.That is, suppose a certain pixel Px of raw frames neither belong to pure color pixel do not belong to yet white pixel (that is, this pixel Px does not show pure color yet not display white), then the brightness of the pixel Px ' of the same position of the first picture 320 can not be adjusted.
Now please refer to Fig. 4, its display is according to the second embodiment of the step 240 of the embodiment of the present invention.At this, for the purpose of simplified illustration, suppose that raw frames 410 comprises 2 blocks, white block B41 and pure color block B42, wherein, the brightness of white block B41 and pure color block B42 is respectively 450 nits (nits) and 206nits.In the second embodiment, the renewal frequency of raw frames improved, such as, suppose that the renewal frequency of its script is 60Hz, then improving 2 times is 120Hz.
Insert the first picture 420, the black block B43 of this first picture 420 obtains by the white block B41 of raw frames 410 is reduced brightness, such as, the white block B41 of raw frames 410 is reduced to 0 by brightness 450nits, to produce the black block B43 of the first picture 420.The distribution position of the pure color block B44 of the first picture 420 is same as the distribution position of the pure color block B42 of raw frames 410, and both it, brightness is identical.The distribution position of the black block B43 of the first picture 420 is same as the distribution position of the white block B41 of raw frames 410, but its brightness is 0.
As shown in Figure 4, via the persistence of vision effect of human eye, raw frames 410 and the first picture 420 can be synthesized picture 430 (its effective frequency synthesis is 60Hz) by human eye.Grey block B45 in picture 430 is synthesized by the block B43 of the block B41 of raw frames 410 and the first picture 420 to form, and its brightness is 225nits ((450+0)/2=225); And the pure color block B46 (it still shows pure color) in picture 430 is synthesized by the pure color block B44 of the pure color block B42 of raw frames 410 and the first picture 420 to form, the brightness of its pure color block B46 is then 206nits ((206+206)/2=206).
So with raw frames 410, the brightness contrast of its pure color block B42 and white block B41 is 206/450=0.46.With picture 430, the brightness contrast of pure color block B46 and grey block B45 is 206/225=0.92.So, it can thus be appreciated that the mode by Fig. 4 can reduce the brightness of white block but the brightness of maintenance pure color block, so can improve the simultaneity contrast of picture.And with traditional RGB panel, the brightness ratio of its pure color block and white block is 275/300=0.92.So, known, by the mode of Fig. 4, pure color block can be made to be similar to the pure color block of traditional RGB panel and brightness ratio that is white or grey block with the brightness ratio of white or grey block.
In addition, in Fig. 4, when the first picture will be produced from raw frames, for ninsolid color non-white pixel, then do not need to adjust its brightness.That is, suppose a certain pixel Px of raw frames neither belong to pure color pixel do not belong to yet white pixel (that is, this pixel Px does not show pure color yet not display white), then the brightness of drawing the pixel Px ' of the same position of 420 can not be adjusted.
Now please refer to Fig. 5, its display is according to the third embodiment of the step 240 of the embodiment of the present invention.At this, for the purpose of simplified illustration, suppose that raw frames 510 comprises 2 blocks, white block B51 and pure color block B52, wherein, the brightness of white block B51 and pure color block B52 is respectively 450 nits (nits) and 206nits.In the third embodiment, the renewal frequency of raw frames is improved and reduces its backlight.Such as, suppose that the renewal frequency of its script is 60Hz, then improving 2 times is 120Hz.
Obtain picture 510 ' after backlight is fallen in raw frames 510, it still comprises 2 blocks, white or grey block B51 ' and pure color block B52 '.White or grey block B51 ' are respectively 400nits and 183nits with the brightness of pure color block B52 '.
Insert the first picture 520, the grey block B53 of this first picture 520 reduces brightness by by the white of picture 510 ' or grey block B51 ' and obtains, such as, the white of picture 510 ' or grey block B51 ' are reduced to 200nits by brightness 400nits, to produce the grey block B53 of the first picture 520.The distribution position of the pure color block B54 of the first picture 520 is same as the distribution position of the pure color block B52 ' of picture 510 ', and both it, brightness is identical.The distribution position of the grey block B53 of the first picture 520 is same as the distribution position of the white block B51 of raw frames 510, that is is same as the white of picture 510 ' or the distribution position of grey block B51 ', but its brightness is 200nits.
As shown in Figure 5, via the persistence of vision effect of human eye, picture 510 ' and the first picture 520 can be synthesized picture 530 (its effective frequency synthesis is 60Hz) by human eye.Grey block B55 in picture 530 is synthesized by the block B53 of the block B51 ' of picture 510 ' and the first picture 520 to form, and its brightness is 300nits ((400+200)/2=300); And the pure color block B56 (it still shows pure color) in picture 530 is synthesized by the pure color block B52 ' of picture 510 ' and the pure color block B54 of the first picture 520 to form, the brightness of its pure color block B56 is then 183nits ((183+183)/2=183).
So with raw frames 510, the brightness contrast of its pure color block B52 and white block B51 is 206/450=0.46.With picture 530, the brightness contrast of pure color block B56 and grey block B55 is 183/300=0.61.So, it can thus be appreciated that the mode by Fig. 5 can reduce the brightness of white block but the brightness of maintenance pure color block, so can improve the simultaneity contrast of picture.And, due to the backlight of picture is reduced, so can further save panel power consumption.
In addition, in Fig. 5, because fall backlight, the brightness of all pixels of raw frames 510 all can reduce.
The embodiment of the present invention more discloses a kind of electronic display unit.Fig. 6 display is according to the block schematic diagram of the electronic display unit of the embodiment of the present invention.Please refer to Fig. 6, electronic display unit 600 comprises: controller 610, driving circuit 620, backlight module 630 and display panel 640.Controller 610 is coupled to driving circuit 620 and backlight module 630.Driving circuit 620 and backlight module 630 are coupled to display panel 640.According to the operation of controller 610, driving circuit 620 and backlight module 630 drive display panel 640 to show.
Controller 610 such as but be not limited to as time schedule controller.Controller 610 receives raw frames IN, and carry out analyze raw frames IN all pixel informations, judge that whether the pure color pixel ratio of this raw frames IN is higher than threshold value R1, and judge that whether the white pixel ratio of this raw frames IN is higher than threshold value R2, whether to improve the renewal frequency of this raw frames IN with decision and insert the first picture, or maintaining raw frames IN.The principle of operation of controller 610 can be learnt by above-mentioned explanation, therefore its details no longer repeats.
Driving circuit 620 such as but be not limited to as source electrode drive circuit.According to the operation of controller 610, driving circuit 620 drives display panel 640 with display.The principle of operation of driving circuit 620 can be learnt by above-mentioned explanation, therefore its details no longer repeats.
Backlight module 630 is in order to send backlight to illuminate display panel 640.According to the operation of controller 610, backlight module 630 illuminates display panel 640 with display.The principle of operation of backlight module 630 can be learnt by above-mentioned explanation, therefore its details no longer repeats.
From the above, in the embodiment of the present invention, through inserting the ash of high frequency or black picture, making human eye when watching picture, feeling that the white of picture or the brightness of grey block reduce, therefore the problem of simultaneity contrast can be slowed down.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.
Claims (12)
1. a driving method for electronic display unit, comprising:
Analyze all pixel informations of multiple pixels of a raw frames;
Judge a pure color block ratio of this raw frames;
Judge one of this raw frames white block ratio; And
According to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames, and insert one first picture, wherein, one pure color block ratio of this first picture is same as this pure color block ratio of this raw frames, and this first picture has a grey block or a black block, and a grey block ratio of this first picture or a black block ratio are same as this white block ratio of this raw frames, and raising renewal frequency makes this raw frames and this first picture Alternation Display;
If this pure color block ratio of this raw frames higher than one first threshold value and this white block ratio of this raw frames higher than one second threshold value, then improve this renewal frequency of this raw frames, and insert this first picture;
If this pure color block ratio of this raw frames is not higher than this first threshold value, or this white block ratio of this raw frames is not higher than this second threshold value, then maintain this raw frames and do not insert this first picture;
One distribution position of this pure color block of this first picture is same as one of this pure color block of this raw frames and scatters position, and a brightness of this pure color block of this first picture is identical with a brightness of this pure color block of this raw frames; And
This grey of this first picture or one of black block scatters the distribution position that position is same as this white block of this raw frames, and a brightness of this grey of this first picture or black block is lower than a brightness of this white block of this raw frames.
2. the method for claim 1, is characterized in that, judges that the step of this pure color block ratio of this raw frames comprises:
For a pixel Px of this raw frames, its pixel information is respectively Rx, Gx and Bx, if [Max (Rx, Gx, Bx)/Min (Rx, Gx, Bx)] > mono-first set value, then judge that this pixel Px is a pure color pixel, Max (Rx, Gx, Bx) and Min (Rx, Gx, Bx) represent a maximal value in Rx, Gx and Bx and a minimum value respectively; And
According to a quantity of all pure color pixels and all pixel quantities of this raw frames, determine this pure color block ratio of this raw frames.
3. the method for claim 1, is characterized in that, judges that the step of this white block ratio of this raw frames comprises:
For a pixel Px of this raw frames, its pixel information is respectively Rx, Gx and Bx, if Rx=Gx=Bx> mono-second set value, then judges that this pixel Px is a white pixel; And
According to a quantity of all white pixel and all pixel quantities of this raw frames, determine this white block ratio of this raw frames.
4. the method for claim 1, is characterized in that:
This grey of this first picture or the brightness of black block are 0.
5. the method for claim 1, is characterized in that, a renewal frequency of this first picture is same as this raw frames after improving this renewal frequency.
6. an electronic display unit, comprising:
One controller;
One display panel; And
One drive circuit, be coupled to this controller and this display panel, this driving circuit is controlled by this controller and drives this display panel;
Wherein, all pixel informations of multiple pixels of a raw frames analyzed by this controller, judge a pure color block ratio of this raw frames, judge one of this raw frames white block ratio, and according to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames, and insert one first picture, one pure color block ratio of this first picture is same as this pure color block ratio of this raw frames, and this first picture has a grey block or a black block, and a grey block ratio of this first picture or a black block ratio are same as this white block ratio of this raw frames, and raising renewal frequency makes this raw frames and this first picture Alternation Display,
If this controller judge this pure color block ratio of this raw frames higher than one first threshold value and this white block ratio of this raw frames higher than one second threshold value, then this controller improves this renewal frequency of this raw frames, and inserts this first picture;
If this controller judges that this pure color block ratio of this raw frames is not higher than this first threshold value, or this white block ratio of this raw frames is not higher than this second threshold value, then this controller maintains this raw frames and does not insert this first picture;
One distribution position of this pure color block of this first picture is same as one of this pure color block of this raw frames and scatters position, and this pure color block of this first picture is identical with the brightness of this pure color block of this raw frames; And
This grey of this first picture or one of black block scatters the distribution position that position is same as this white block of this raw frames, and the brightness of this grey of this first picture or black block is lower than the brightness of this white block of this raw frames.
7. electronic display unit as claimed in claim 6, is characterized in that,
For a pixel Px of this raw frames, its pixel information is respectively Rx, Gx and Bx, if this controller judges [Max (Rx, Gx, Bx)/Min (Rx, Gx, Bx)] > mono-first set value, then this controller judges that this pixel Px is a pure color pixel, Max (Rx, Gx, Bx) and Min (Rx, Gx, Bx) represent a maximal value in Rx, Gx and Bx and a minimum value respectively; And
According to a quantity of all pure color pixels and all pixel quantities of this raw frames, this controller determines this pure color block ratio of this raw frames.
8. electronic display unit as claimed in claim 6, is characterized in that,
For a pixel Px of this raw frames, its pixel information is respectively Rx, Gx and Bx, if this controller judges Rx=Gx=Bx> mono-second set value, then this controller judges that this pixel Px is a white pixel; And
According to a quantity of all white pixel and all pixel quantities of this raw frames, this controller determines this white block ratio of this raw frames.
9. electronic display unit as claimed in claim 6, is characterized in that:
This grey of this first picture or the brightness of black block are 0.
10. electronic display unit as claimed in claim 6, is characterized in that, a renewal frequency of this first picture is same as this raw frames after improving this renewal frequency.
The driving method of 11. 1 kinds of electronic display units, comprising:
Analyze all pixel informations of multiple pixels of a raw frames;
Judge a pure color block ratio of this raw frames;
Judge one of this raw frames white block ratio;
According to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames;
If this pure color block ratio of this raw frames higher than one first threshold value and this white block ratio of this raw frames higher than one second threshold value, then improve this renewal frequency of this raw frames and carry out falling backlight operation to obtain one first picture, and insert one second picture, one distribution position of one pure color block of this first picture is same as one of this pure color block of this raw frames and scatters position, one white of this first picture or one of grey block scatters the distribution position that position is same as this white block of this raw frames, one brightness of this pure color block of this first picture is lower than a brightness of this pure color block of this raw frames, this white of this first picture or a brightness of grey block are lower than a brightness of this white block of this raw frames, one grey block of this second picture reduces brightness by by this white of this first picture or grey block and obtain, one distribution position of this grey block of this second picture is same as this white of this first picture or this distribution position of grey block, one distribution position of one pure color block of this second picture and a brightness are same as this distribution position and this brightness of this pure color block of this first picture, and
If this pure color block ratio of this raw frames is not higher than this first threshold value, or this white block ratio of this raw frames is not higher than this second threshold value, then maintain this raw frames and do not carry out this fall backlight operation and do not insert this second picture.
12. 1 kinds of electronic display units, comprising:
One controller;
One display panel; And
One drive circuit, be coupled to this controller and this display panel, this driving circuit is controlled by this controller and drives this display panel;
Wherein, this controller
Analyze all pixel informations of multiple pixels of a raw frames;
Judge a pure color block ratio of this raw frames;
Judge one of this raw frames white block ratio;
According to this pure color block ratio of this raw frames and this white block ratio of this raw frames, determine the renewal frequency whether improving this raw frames;
If this pure color block ratio of this raw frames higher than one first threshold value and this white block ratio of this raw frames higher than one second threshold value, then improve this renewal frequency of this raw frames and carry out falling backlight operation to obtain one first picture, and insert one second picture, one distribution position of one pure color block of this first picture is same as one of this pure color block of this raw frames and scatters position, one white of this first picture or one of grey block scatters the distribution position that position is same as this white block of this raw frames, one brightness of this pure color block of this first picture is lower than a brightness of this pure color block of this raw frames, this white of this first picture or a brightness of grey block are lower than a brightness of this white block of this raw frames, one grey block of this second picture reduces brightness by by this white of this first picture or grey block and obtain, one distribution position of this grey block of this second picture is same as this white of this first picture or this distribution position of grey block, one distribution position of one pure color block of this second picture and a brightness are same as this distribution position and this brightness of this pure color block of this first picture, and
If this pure color block ratio of this raw frames is not higher than this first threshold value, or this white block ratio of this raw frames is not higher than this second threshold value, then maintain this raw frames and do not carry out this fall backlight operation and do not insert this second picture.
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| CN114078449B (en) * | 2021-11-23 | 2023-05-26 | 京东方科技集团股份有限公司 | Driving device and driving method for electronic paper display panel and display device |
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| CN101510389A (en) * | 2008-02-15 | 2009-08-19 | 株式会社日立显示器 | Display device |
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| CN101419771A (en) * | 2007-10-23 | 2009-04-29 | Nec液晶技术株式会社 | Image display unit and image display method for image display device |
| CN101510389A (en) * | 2008-02-15 | 2009-08-19 | 株式会社日立显示器 | Display device |
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