CN103258508B - Method for driving liquid crystal display and display device - Google Patents
Method for driving liquid crystal display and display device Download PDFInfo
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- CN103258508B CN103258508B CN201210035209.2A CN201210035209A CN103258508B CN 103258508 B CN103258508 B CN 103258508B CN 201210035209 A CN201210035209 A CN 201210035209A CN 103258508 B CN103258508 B CN 103258508B
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Abstract
The invention discloses a kind of driving method for a display, comprise one first image data receiving the picture corresponding to this display, this first image data is made up of multiple picture frame; Obtain one first picture frame adjacent in the plurality of picture frame and one second picture frame; According to this first picture frame and this second picture frame, calculate multiple subgraph frame; Adjust the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of mean flow rate lower than the plurality of picture frame of the plurality of subgraph frame; The plurality of subgraph frame is sequentially inserted between this first picture frame and this second picture frame, to obtain one second image data; And according to this second image data, drive this display.
Description
Technical field
The present invention relates to a kind of display drive method and related display apparatus, particularly relating to a kind of sub-picture frame by inserting different brightness combination, making a liquid crystal display have driving method and the related display apparatus of preferably Dynamic Announce effect and low power consumption.
Background technology
Generally speaking, at liquid crystal (Liquid Crystal Display, in the Driving technique of LCD) display, promote the display quality of dynamic menu by increasing turnover rate (frame rate), and reduce the phenomenon of dynamic ghost (motion blur).But the turnover rate improving picture will increase the power consumption of display.Therefore, known technology proposes the method for inserting black picture (black frame insertion) in dynamic menu, to reduce the problem of power consumption.But, after inserting black surround, the shortcoming reduced causing display brightness.
Please refer to Figure 1A-1C, Figure 1A-1C is the schematic diagram of the image data of known displays.As shown in Figure 1A, image data 100 is made up of multiple picture frame F1-Fn, and turnover rate is the image data 100 of 60Hz originally, improves turnover rate by distinct methods, to strengthen its Dynamic Announce effect.First, as shown in Figure 1B, the subgraph frame (as Fk_1, Fk_2, Fk_3) obtained by inserting three calculations between the adjacent frames (as Fk, F (k+1)) of Figure 1A, to obtain the image data 102 that a turnover rate is 240Hz, but the display power of the driving method four times higher than Figure 1A will be consumed.Then, as shown in Figure 1 C, also can insert three black pictures between the adjacent frames of the 60Hz of Figure 1A, to obtain taking turnover rate as the image data 104 of 240Hz, but its picture brightness will only be 1/4th of the image data 100 of Figure 1A.
Therefore, how to improve the driving method of known display device, insert the picture frame problem that causes brightness to reduce to solve, while take into account again the consumption of power, become one of target that industry makes great efforts.
Summary of the invention
Therefore, the invention provides a kind of method for driving liquid crystal display and related display apparatus, be used in the image data of a display, insert the subgraph frame of different brightness combination, to improve its Dynamic Announce effect and consumed power.
The present invention discloses a kind of driving method for a display, and comprise one first image data receiving the picture corresponding to this display, this first image data is made up of multiple picture frame; Obtain one first picture frame adjacent in the plurality of picture frame and one second picture frame; According to this first picture frame and this second picture frame, calculate multiple subgraph frame; Adjust the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of mean flow rate lower than the plurality of picture frame of the plurality of subgraph frame; The plurality of subgraph frame is sequentially inserted between this first picture frame and this second picture frame, to obtain one second image data; And according to this second image data, drive this display.
The present invention also discloses a kind of drive unit for a display, comprises a receiving element, is used for receiving one first image data of a picture corresponding to this display, and this first image data is made up of multiple picture frame; One computing unit, is used for obtaining one first picture frame adjacent in the plurality of picture frame and one second picture frame, and according to this first picture frame and this second picture frame, calculates multiple subgraph frame; One adjustment unit, be used for adjusting the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of mean flow rate lower than the plurality of picture frame of the plurality of subgraph frame, and the plurality of subgraph frame is sequentially inserted between this first picture frame and this second picture frame, to obtain one second image data; And a driver element, be used for, according to this second image data, driving this display.
Coordinate following schemes, the detailed description of embodiment and claims at this, by address after other object of the present invention and advantage be specified in.
Accompanying drawing explanation
Figure 1A-1C is the schematic diagram of the image data of a known displays.
Fig. 2 is the schematic diagram that the embodiment of the present invention one drives flow process.
Fig. 3 A-3F is the schematic diagram of embodiment of the present invention different driving method.
Fig. 4 A-4F is the schematic diagram of embodiment of the present invention different driving method.
Fig. 5 A-5D is the schematic diagram of embodiment of the present invention different driving method.
Fig. 6 is the schematic diagram of the embodiment of the present invention one display.
Wherein, description of reference numerals is as follows:
20 flow processs
100-104,300-310,400-410,500-506 image data
Fk, F (k+1), F (k+2), (k+3) picture frame
Fk_1, Fk_2, Fk_3, F (k+1) _ 1, F (k+1) _ 2, F (k+1) _ 3, subgraph frame
F(k+2)_1、F(k+2)_2、F(k+2)_3
R is red
G is green
B is blue
60 displays
600 display panels
602 source electrode drivers
604 gate pole drivers
606 driver elements
608 picture frame storage elements
610 picture frame computing units
612 picture frame adjustment units
DRV_S, DRV_G drive singal
Embodiment
Please refer to Fig. 2, Fig. 2 is the schematic diagram of a display driver flow process 20 of the embodiment of the present invention.Display driver flow process 20 is applied in a display DISP, and comprises the following steps:
Step 200: start.
Step 202: the first image data IMG1 receiving the picture corresponding to display DISP, the first image data IMG1 is made up of multiple picture frame F1-Fn.
Step 204: obtain one first picture frame Fk adjacent in multiple picture frame F1-Fn and one second picture frame Fk+1.
Step 206: according to the first picture frame Fk and the second picture frame Fk+1, calculates multiple subgraph frame Fk_1-Fk_n.
Step 208: the brightness adjusting at least one subgraph frame in multiple subgraph frame Fk_1-Fk_n, makes the mean flow rate of mean flow rate lower than multiple picture frame F1-Fn of multiple subgraph frame Fk_1-Fk_n.
Step 210: sequentially insert between the first picture frame Fk and the second picture frame Fk+1 by multiple subgraph frame Fk_1-Fk_n, to obtain one second image data IMG2.
Step 212: according to the second image data IMG2, driving display DISP.
Step 214: terminate.
According to flow process 20, the present invention can insert the subgraph frame Fk_1-Fk_n through brightness adjustment between each adjacent frames of the image data IMG1 of display DISP, to obtain the image data IMG2 that another has comparatively Gao Gengxin rate (frame rate).Be different from known technology, the method that flow process 20 antithetical phrase picture frame Fk_1-Fk_n carries out brightness adjustment is not limited to insert black surround (black frame), and the subgraph frame of suitable brightness combination can be inserted, to take into account dynamic effect and the driving power thereof of display DISP.In brief, the driving method of known displays only can select to insert the picture frame of full brightness or full black surround to improve the dynamic effect of turnover rate and enhancing display, therefore the shortcoming such as have the too high or brightness of power consumption too low.In comparison, the subgraph frame (as multiple subgraph frame Fk_1-Fk_n) of different brightness combination is inserted, to average out between Dynamic Announce effect, driving power and display brightness between the adjacent frames (as the first picture frame Fk and the second picture frame Fk+1) of driving flow process 20 of the present invention by the image data IMG1 at display DISP.
Specifically, the image data IMG1 obtained in step 202. is an image data with lower turnover rate, and it is made up of multiple picture frame F1-Fn.In other words, display DISP sequentially shows multiple picture frame F1-Fn with this turnover rate.Then, in step 204, in multiple picture frame F1-Fn, select the first adjacent picture frame Fk and the second picture frame Fk+1, and by step 206, according to the first picture frame Fk and the second picture frame Fk+1, calculate and need assign into the multiple subgraph frame Fk_1-Fk_ns of Fk, Fk+1 two between picture frame, to improve dynamic effect and the turnover rate of image data IMG1.Calculate the method for multiple subgraph frame Fk_1-Fk_n, can obtain according to known dynamic interpolation (motion interpolation) scheduling algorithm, it is known in the art, therefore does not repeat at this.Then, in a step 208, can according to different embodiments of the invention, suitably the brightness of the multiple subgraph frame Fk_1-Fk_n of adjustment, makes it present different brightness permutation and combination, to meet different application.Finally, in step 210, the multiple subgraph frame Fk_1-Fk_n calculated out are assigned back between the first adjacent picture frame Fk and the second picture frame Fk+1, to obtain comparing the image data IMG2 that image data IMG1 has better dynamic effect, more Gao Gengxin rate, and in the step 212, utilize image data IMG2 driving display DISP.
For example, please refer to Fig. 3 A, Fig. 3 A is the schematic diagram processing an image data 300 according to display driver flow process 20.Image data 300 is by the image data 100 shown in Figure 1A, inserts multiple subgraph frame and obtains.At this for n=3, that is originally turnover rate be in the image data 100 of 60Hz between each adjacent frames by insertion 3 sub-picture frames, to obtain the image data 300 that turnover rate is increased to 240Hz.As shown in Figure 3A, Fk, F (k+1), F (k+2) and F (k+3) is the picture frame for four continuous adjacent in image data 100, and according to display driver flow process 20 of the present invention, can at picture frame Fk, Fk_1 is inserted between F (k+1), Fk_2, three sub-picture frames such as Fk_3, at picture frame F (k+1), F (k+1) _ 1 is inserted between F (k+2), F (k+1) _ 2, three sub-picture frames such as F (k+1) _ 3 grade, and at picture frame F (k+2), F (k+2) _ 1 is inserted between F (k+3), F (k+2) _ 2, three sub-picture frames such as F (k+2) _ 3 grade.
Then, in the present embodiment, the mode of adjustment subgraph frame is the picture composition of for a change subgraph frame, by originally having panchromatic (R, G, B three primary colors) picture, changes the picture of the single look constituent (as only having red color components) only with former picture frame into.In other words, three the sub-picture frames such as Fk_1, Fk_2, Fk_3 inserted between picture frame Fk, F (k+1) are the sprites being sequentially red (R), green (G) and blue (B).In like manner, three sub-picture frames such as three sub-picture frames and F (k+2) _ 1, F (k+2) _ 2, F (k+2) _ 3 such as F (k+1) _ 1, F (k+1) _ 2, F (k+1) _ 3 are also sequentially the sprite of red, green, blue respectively.Because picture frame Fk, the F (k+1) in image data 100, F (k+2) and F (k+3) are the full color views that Red Green Blue is formed by stacking, therefore the subgraph frame of monochrome (the monochromatic subgraph frame Fk_1 as redness), for display DISP, will only consume the driving power of 1/3.Therefore, be similarly the image data of turnover rate 240Hz, image data 300 will have the dynamic effect of the image data 102 of similar Figure 1B, but image data 300 is merely (1+3 × 1/3) with the consumed power ratio of image data 102: (1 × 4)=1: 2, that is image data 300 only consumes a half-power of image data 102.Meanwhile, the image data 104 of Fig. 1 C and the display brightness ratio of image data 300 will be (1+3 × 0): (1+3 × 1/3)=1: 2, that is image data 300 will exceed the brightness of twice compared with the image data 104 after black plug.
It is noted that the type of drive of the image data 300 shown in Fig. 3 A is only an embodiment, those skilled in the art can make the appropriate adjustments the type of drive of image data 300, to meet the demand of different application.In another embodiment, the brightness of adjustable subgraph frame, is arbitrary brightness permutation and combination, takes into account dynamic effect and driving power, for different application as long as can reach.Further, Fig. 3 B to 3F, Fig. 4 A to 4F and Fig. 5 A to 5D are the schematic diagram of different embodiments of the invention.Specifically, Fig. 3 A to 3F is monochromatic picture frame, difference between black picture frame and panchromatic picture frame arranges the image data obtained, Fig. 4 A to 4F is double-colored picture frame, difference between black picture frame and panchromatic picture frame arranges the image data obtained, and Fig. 5 A to 5D is monochromatic picture frame, difference between double-colored picture frame, black picture frame and panchromatic picture frame arranges the image data obtained.
Specifically, please refer to Fig. 3 B, it is the schematic diagram processing an image data 302 according to display driver flow process 20, and image data 302 only inserts a monochromatic picture frame between every adjacent frames, remains and fills with black surround, and alternately insert trichromatic picture frame.As shown in Figure 3 B, subgraph frame Fk_1, Fk_2 and Fk_3 one of them (as picture frame Fk_2) can be selected between picture frame Fk and F (k+1) as monochromatic picture frame (as only having red color components), and all the other Fk_1 and Fk_3 then fill with black surround.Similarly, subgraph frame F (k+1) _ 2 and subgraph frame F (k+2) _ 2 can be respectively green and blue monochromatic subgraph frame, and all the other subgraph frames F (k+1) _ 1, F (k+1) _ 3, F (k+2) _ 1 and F (k+2) _ 3 then fill with black surround.Therefore, be similarly the image data of turnover rate 240Hz, image data 302 will have the dynamic effect of the image data 102 of similar Figure 1B, but image data 302 will more be reduced to (1+1/3) with the consumed power ratio of image data 102: (1 × 4)=1: 3, that is image data 302 only consumes the power of 1/3rd of image data 102.Meanwhile, the image data 104 of Fig. 1 C and the display brightness ratio of image data 302 will be (1+3 × 0): (1+1/3)=3: 4, that is image data 302 will exceed about 1.33 times brightness compared with the image data 104 after black plug.Similarly, the different image data of Fig. 3 C to 3F all has the dynamic effect better than the image data 100 of Figure 1A, simultaneously more save driving power than the image data 104 of Fig. 1 C again, and provide the type of drive between dynamic effect in various degree and driving power, in order to different application.
Further, please refer to Fig. 4 A, it is the schematic diagram processing an image data 400 according to display driver flow process 20, and image data 400 is between every adjacent frames, sequentially insert the double-colored picture frame (such as R+G, G+B, R+B) that three three looks replace.Or, as shown in the image data 402 of Fig. 4 B, subgraph frame Fk_1, Fk_2 and Fk_3 one of them (as picture frame Fk_2) can be selected between picture frame Fk and F (k+1) as double-colored picture frame (as R+G), all the other Fk_1 and Fk_3 then fill with black surround, more sequentially to rotate all the other possible double-colored picture frames with subgraph frame F (k+1) _ 2 and subgraph frame F (k+2) _ 2.Similarly, the different image data of Fig. 4 C to 4F all has the dynamic effect better than the image data 100 of Figure 1A, more save driving power than the image data 104 of Fig. 1 C again simultaneously, and provide the type of drive of the balance in various degree between dynamic effect and driving power, in order to different application.
On the other hand, please refer to Fig. 5 A, it is for processing the schematic diagram of an image data 500 according to display driver flow process 20, image data 500 is between every adjacent frames, sequentially insert the double-colored picture frame (such as R+G, R+B) that two three looks replace, and a monochromatic picture frame (such as B), and convert between 60Hz.Similarly, the different image data of Fig. 5 A to 5D all has the dynamic effect better than the image data 100 of Figure 1A, more save driving power than the image data 104 of Fig. 1 C again simultaneously, and provide the type of drive of the balance in various degree between dynamic effect and driving power, in order to different application.
About the realization of the corresponding flow process 20 of tone, can be the schematic diagram of the embodiment of the present invention one display 60 with reference to figure 6, Fig. 6.Display 60 comprises a display panels 600, one source pole driver 602, gate pole driver 604 and a driver element 606.Driver element 606 comprises picture frame storage element 608, picture frame computing unit 610 and a picture frame adjustment unit 612, and output drive signal DRV_S, DRV_G can be distinguished to gate pole driver 604 and driver element 606, show an image data to drive display panel 600.Specifically, picture frame storage element 608 first can receive and store n picture frame F1-Fn (not shown), and picture frame computing unit 610 can calculate picture frame F1-Fn according to different application adjacent frames between should insert how many subgraph frame respectively, and which kind of brightness combination each subgraph frame should present (such as: monochromatic picture frame, the combination of double-colored picture frame or black picture frame), and picture frame adjustment unit 612 just can produce suitable drive singal DRV_S according to this, DRV_G is to gate pole driver 604 and driver element 606, to drive display panel 600 with a specific turnover rate, show the image data after a brightness adjustment, it can have good dynamic perfromance, driving power and display brightness.About the running of display 60, can with reference to above-mentioned flow process 20 describe, repeat no more.
It is noted that spirit of the present invention is visual application in image data and inserts the subgraph frame of different brightness combination.For example, the different driving mode of the embodiment of the present invention is capable of being combined is used in same display, is not limited to independent application.In addition, display also can have different display modes, under when needing high brightness one high-effect pattern, the panchromatic picture frame or the double-colored picture frame (as image data 400) that insert higher proportion can be selected, and under needing lower display brightness or a lower powered battery saving mode, the monochromatic picture frame or the black surround (as image data 302) that insert higher proportion can be selected.In addition, also can decide the number inserting picture frame according to the turnover rate for operation, the adjacent frames as the image data at 60Hz only respectively inserts a sub-picture frame (n=1), then the turnover rate of the image data of 60Hz can be increased to 120Hz.In addition, in the present invention, the brightness combination of subgraph frame has the red color components, green components and the blue component that are evenly distributed, to avoid showing aberration, but not subject to the limits.Also the brightness of subgraph frame deliberately can be made to combine and to present unequal distribution (as there is the red picture frame of higher proportion), to reach different display effects, as different-colour etc.
In sum, the picture frame of insertion full brightness or full black surround only can be selected to improve the dynamic effect of turnover rate and enhancing display compared to known display drive method, and the shortcoming such as have the too high or brightness of power consumption too low, the subgraph frame that driving method of the present invention combines by inserting different brightness between the adjacent frames of display, to average out between Dynamic Announce effect, driving power and display brightness.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1., for a driving method for a display, comprising:
Receive one first image data of the picture corresponding to this display, this first image data is made up of multiple picture frame;
Obtain one first picture frame adjacent in the plurality of picture frame and one second picture frame;
According to this first picture frame and this second picture frame, calculate multiple subgraph frame;
Adjust the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of mean flow rate lower than the plurality of picture frame of the plurality of subgraph frame;
The plurality of subgraph frame is sequentially inserted between this first picture frame and this second picture frame, to obtain one second image data; And
According to this second image data, drive this display;
It is characterized in that, adjust the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of the plurality of subgraph frame lower than the step of the mean flow rate of the plurality of picture frame, comprising:
Remove at least one component color in this at least one subgraph frame respectively.
2. driving method as claimed in claim 1, is characterized in that, adjust the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of the plurality of subgraph frame lower than the step of the mean flow rate of the plurality of picture frame, comprising:
With at least one black surround, replace this at least one subgraph frame.
3. driving method as claimed in claim 1, it is characterized in that, in this second image data, the component color of each picture frame is in being evenly distributed.
4. driving method as claimed in claim 1, it is characterized in that, the plurality of picture frame is made up of red, blue, green three looks respectively.
5., for a drive unit for a display, comprising:
One receiving element, be used for receiving one first image data of a picture corresponding to this display, this first image data is made up of multiple picture frame;
One computing unit, is used for obtaining one first picture frame adjacent in the plurality of picture frame and one second picture frame, and according to this first picture frame and this second picture frame, calculates multiple subgraph frame;
One adjustment unit, be used for adjusting the brightness of at least one subgraph frame in the plurality of subgraph frame, make the mean flow rate of mean flow rate lower than the plurality of picture frame of the plurality of subgraph frame, and the plurality of subgraph frame is sequentially inserted between this first picture frame and this second picture frame, to obtain one second image data; And
One driver element, is used for, according to this second image data, driving this display;
It is characterized in that, this adjustment unit removes at least one component color in this at least one subgraph frame respectively, to adjust the brightness of this at least one subgraph frame in the plurality of subgraph frame.
6. drive unit as claimed in claim 5, it is characterized in that, this adjustment unit is with at least one black surround, replaces this at least one subgraph frame, to adjust the brightness of this at least one subgraph frame in the plurality of subgraph frame.
7. drive unit as claimed in claim 5, it is characterized in that, in this second image data, the component color of each picture frame is in being evenly distributed.
8. drive unit as claimed in claim 5, it is characterized in that, the plurality of picture frame is made up of red, blue, green three looks respectively.
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CN107424571B (en) * | 2017-08-31 | 2021-03-09 | 北京集创北方科技股份有限公司 | Organic light emitting diode display device and driving method thereof |
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